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If the small road roller is new to you, let's take a look at the specific problems of the roller in the use of the above. Let's take a look at it. The small hand-held roller compactor is compact in structure, easy to use, high in efficiency, and can also be used with large road rollers. It is widely used in road maintenance, landscape gardening, and road surface compaction of golf courses. Today, we are introducing the precautions for the first use of the small hand-held road roller. Welcome to pay attention. 1. Since the parts of the small hand-held road roller used for the first time are new, the bearing pressure is unstable, which requires the driver to pay attention to the control time and strength during the operation to avoid serious wear and tear on the parts. Second, the hand-held road roller that has not been put into use must avoid impact and heat when it is used for the first time, otherwise it will easily cause loosening of various important parts. Third, when the small hand-held road roller is used for the first time, the lubrication between the various components is still relatively lacking, so it is necessary to do the lubrication work regularly to prevent the surface of the parts from being scratched.

Reducing fuel consumption has always been a tough problem for small roller users. Want to improve the efficiency of the equipment, but do not want to spend too much money on the oil to solve this problem? Is there such a way to achieve the best of both worlds? Mastering the fuel saving method is very important! Below, Xiao Bian has compiled some tips on the fuel saving of the roller for your reference. I hope the following can help you! Small road roller's fuel-saving strategy 1 ton roller specific method: First, keep the engine's normal operating temperature, especially in the cold season, try to keep the water temperature at 75-90 °C and use the oil according to the season. 2. Regularly remove scale from the cooling system and grease and deposits from pipes and silencers. Third, adjust the brakes correctly, always check the front and rear wheels of the tractor to keep the tire pressure normal. Fourth, keep the electrical system and starting mechanism performance intact. Do not run the engine at idle speed for a long time, and stop immediately. 5. The locomotive load should be appropriate. Practice has proved that the load is about 85%, the most fuel-efficient and economical, avoiding the phenomenon of [big horse-drawn car" or [small horse-drawn cart" to avoid wasting fuel. 6. Choose the appropriate driving speed. Medium and light load use "high-grade small throttle". Do not hit the throttle, do not speed. 7. Reasonable selection of agricultural machinery and contiguous operations. Appropriately plan the plots and driving routes, minimize idle, empty, roundabout, stopovers, shorten the total distance traveled, and reduce inefficient energy consumption. 8. Technical maintenance in a timely and reasonable manner, keeping all components and institutions in a good state of technology, without disease. Nine, clean oil, metering and refueling. If there is no pre-precipitation filtration before use, the impurities in the oil will cause damage to the plunger and the needle valve, causing the locomotive power to drop and the fuel consumption to increase. Therefore, the general oil should be precipitated for more than 48 hours before use. Ten, to prevent oil leakage. Due to the long-term use of the machine, the joints will be in poor contact, improper assembly, damage to the mat, loose screws, deformation or cracking of the duct, and aging of the seals will cause oil leakage. Therefore, it is necessary to take corresponding countermeasures to stop the fuel economy in time.

Tan, an old friend from Thailand, visited the factory Mr. Tan and his two sons came to the factory to inspect the truck cranes and road rollers and expressed great interest. Mr. Tan is an old customer of the company and regularly purchases a batch of goods every year.

6 sets of 1 ton excavator configuration Briggs & Stratton XR200 Epa certified engine loading cabinet exports to the United States

Excavator filter manufacturers share: 1. Inspection methods and results When the bucket cylinder moves slowly or does not move, check the appearance of the bucket cylinder. If there is no abnormality, check the oil return filter. With the frequent operation of the bucket cylinder piston, particles generated due to wear and the like will flow with the working medium and be intercepted by the return filter element in the return line. If a large black rubber block is found in the oil return filter, it indicates that the piston seal is broken; if iron scraps of different sizes are found, it indicates that the steel seal ring generates friction particles with the inner wall of the cylinder; if there is gray or yellowish translucent The nylon material indicates damage to the wear ring. Excavator filter manufacturers have found through inspection that the machine return filter contains a large number of metal powder, black rubber blocks, brown nylon and small metal particles. After checking the bucket cylinder, it was found that the piston seal ring and the wear ring were completely damaged, and the 2 steel rings were stuck in the piston ring groove and they were fractured. The inner wall of the cylinder barrel was severely strained, and there was a lot of metal powder at the bottom of the cylinder. Particles. The above inspection results show that the bucket cylinder has been damaged. 2. Analysis and analysis of the reasons It is believed that due to factors such as metal fatigue, the steel ring on the piston of the bucket cylinder is broken, causing the piston to directly contact with the cylinder. The steel ring is broken and the bucket is constantly scraped during the frequent expansion and contraction of the piston rod. The inner wall will pull the cylinder wall and cause internal leakage, so that the speed of the bucket cylinder will decrease. With the increase of working hours, the damage of the seal ring and the pulling of the cylinder wall are continuously aggravated, resulting in more serious internal leakage of the bucket cylinder, so that the control valve cannot control the action of the bucket cylinder. 3. Preventive measures (1) Excavator filter manufacturers share the normative operation of the excavator. If the piston of the bucket cylinder reaches the end of the stroke of the rod cavity, the inner limit ring of the excavator filter can easily damage due to pressure and impact, thereby reducing the bucket cylinder. Service life. Therefore, when operating the machine, the bucket cylinder should retain a stretching allowance of 10-20 cm. This operation can prevent fatigue damage of steel rings and limit rings on the piston due to prolonged heavy load impact. When digging excavators in Wuhan excavator, the depth of excavation and the excavation range constantly change, so the bucket bucket should be made as much as possible during operation. Make a 90° angle with the connecting rod, stick cylinder and stick, do not always reach the end of stroke. This allows the excavator to achieve maximum digging force and maximum work efficiency. Excavator filter manufacturers share (2) Reasonable maintenance should be based on the excavator's operating conditions and operating conditions, change oil maintenance according to local conditions. Compared with bucket digging, hydraulic oil often deteriorates more quickly when it is broken with a hydraulic breaker. When working with a hydraulic breaker, maintenance should be performed as shown in the attached drawings. As can be seen from the drawing, when the hydraulic excavator does not use a crusher, its hydraulic oil can be replaced for up to 5000 hours. When the excavator only uses the crusher, hydraulic oil should be replaced every 600 hours. If the excavator is working with both the bucket and the crusher, it is necessary to find a reasonable time for replacing the hydraulic oil in the drawing based on the actual operating rate of the excavator using the crusher. For example, when the actual working rate of an excavator using a crusher is 20%, the replacement time of the hydraulic oil is about 2 000 h; when the excavator uses a crusher, the actual operating rate is 50%, and the hydraulic oil replacement time is 1 000 h. Left and right; when the actual operating rate of the excavator using the crusher is 80%, the replacement time of the hydraulic oil is about 750 h. Excavator filter manufacturers share. In addition, when a hydraulic excavator uses a hydraulic breaker, a dedicated excavator filter element shall be added and used every 250 hours (when the actual operating rate of the crusher is more than 50%) as the standard. The additional filter cartridge replacement time is shown in the figure. curve. As can be seen from the figure, the crusher's operation rate is 30% before, the time for the replacement of the crusher filter cartridge is 500 h, the crusher's operation rate is 30% to 50%, and the replacement time is shortened from 500 h. To 250 h. Similarly, when the actual operating rate of the filter element in the hydraulic oil tank is 50%, the replacement time is also advanced to 150 hours. Excavator filter manufacturers share

1, excavator operation technology First, confirm the surrounding conditions. When working on the slewing ring, you should be aware of the obstacles and terrain around you, and operate safely. When you work, you must confirm the front and rear tracks of the crawler to avoid tipping or impact. Try not to face the final drive in the direction of excavation, otherwise it is easy to damage walking. Motors or hoses; when operating, ensure that the left and right tracks are in full contact with the ground to improve the dynamic stability of the entire machine. 2, effective mining methods When the bucket cylinder and the connecting rod, the stick cylinder and the stick are 90 degrees apart from each other, the digging force is maximum; when the bucket teeth and the ground are maintained at an angle of 30 degrees, the digging force is the best, that is, the cutting soil resistance is the minimum; When excavating the rod, ensure that the arm angle ranges from the front 45 degrees to the rear 30 degrees. Using booms and buckets at the same time can increase the efficiency of excavation. 3, excavating rocks The use of buckets to excavate rocks will cause great damage to the machine and should be avoided. When it is necessary to excavate, the position of the body should be adjusted according to the direction of the cracks in the rock so that the bucket can be smoothly shovelled and excavated; the teeth of the bucket can be inserted into the rock cracks. In the process, excavation is performed using the digging force of the stick and the bucket (should pay attention to the slippage of the teeth); rocks that have not been disintegrated should be broken before digging with a bucket. 4, slope formation When carrying out plane dressing, the machine should be laid flat on the ground to prevent the body from shaking, and it is necessary to grasp the coordination of the movements of the boom and the stick, and controlling the speed of the two is crucial for the plane dressing.

When an imported excavator swivels during a heavy load, three kinds of squeaks and squeaks are irregularly emitted. We use the acoustic wave detector to check the casing of the rotary motor, the casing of the rotary speed reducer, and the outer diameter of the rotating gear ring. The strongest sound is the slewing ring gear, but when measuring the speed reducer, there are also sounds. We installed a pressure gauge on the main pump. When the excavator is heavily loaded, the pointer of the pressure gauge is shown to swing. When the sound is over, the pressure value of the gauge drops. Our first step is to open the excavator to an open space. The purpose is to have space for the excavator to turn around, then straighten out the big arm and the small arm. The bucket is one meter high from the ground. Stop the engine and drain the excess pressure. When the rotary motor tubing is not disassembled, the rotary motor fixing bolt is removed and the motor is removed from the speed reducer. The requirement is that the motor spindle be separated from the center gear sleeve of the rotary speed reducer by a small distance and fixed. The engine was started and the motor was operated for rotation. Since the slewing motor was detached from the slewing speed reducer, the motor was idling in the forward and reverse directions, and the motor was operated smoothly without any abnormal noise. It was proved that the slewing motor had no failure and the motor was separated from the excavator. The second step is to use the person to push the bucket (the bucket has left the ground) to allow the rotation of the excavator to move around. The person on the plane will judge whether the abnormal sound is from the rotary speed reducer or the slewing ring. . The result is that both items have different sounds. Remove the reducer from the excavator and check that the bearing on the spindle end has been damaged. Abnormal noise is emitted from the bearing. The third step is to use a person to push the bucket. The excavator slewing ring still has a strange sound. Before disassembling the slewing ring gear, close the dismantled tubing and start the engine. Return the excavator to the upper part of the detachable excavator. attitude. We separated the slewing ring gear from the excavator and disassemble the inner and outer ring gears to see the hardened layer of the rolling surface fall off. The fourth step is to send the slewing ring gear to a professional bearing factory. After grinding the raceway according to the enlarged ball size, the quenching is performed again. The repaired slewing ring gear is returned to the excavator, and everything is normal.

Excavators have become one of the most important types of construction equipment for construction projects. In particular, the emergence of hydraulic excavators has provided advanced and efficient construction methods for earth and stone works. Excavator Use The excavator is mainly used for the completion of work: excavation of building and plant foundations; excavation of earth materials, stripping of mining field coverings; loading operations in quarries, tunnels, underground powerhouses and stockyards; excavation Channels, canals, and dredging waterways; after replacing the working device, pouring, lifting, installing, piling, ramming, etc. can be performed. Construction users how to buy high-quality excavator purchasing elements are said to be good, "The workers want to do their thing, we must first sharpen its device." Today, the problem facing each construction unit or individual is how to purchase suitable engineering equipment. Excavators are one of the most important types of construction machinery in engineering construction. The correct choice is even more important. How to correctly choose a hydraulic excavator is determined by many factors such as the nature of the construction task, scale, technology, economics, and equipment and construction time requirements in the construction project. In addition, the following factors are very important: mechanical performance, reliability and durability are better, investment recovery period is shorter, and improvement of comfort and safety is a must. In addition, good after-sales service can reduce user downtime and improve economic efficiency. Of course, the supply of accessories and the price level are all important factors that must be considered when purchasing equipment. The crawler type hydraulic excavator can be selected for the occasions where the work conditions and mobility of the project are the largest and the working conditions are poor. Where the ground load-bearing capacity is strong, bumps, pits or hard large ore conditions, narrow track plus heavy hydraulic excavator should be used; on the contrary, if the ground load capacity is weak, the loose soil conditions should be used to extend the broadband Excavator. The large-scale earthworks and the application of large and medium-sized open-pit mine engineering are analyzed, compared and scientifically calculated by design institutes or relevant experts according to a variety of factors such as the total investment and ancillary equipment, and the specifications, types, and quantities of purchased hydraulic excavators are determined. Generally periodical small and medium-sized projects, such as road maintenance and farmland water conservancy, need only ordinary model excavators. For example, an excavator with a wide range of models between 20-25T can fully meet the requirements. Tire type hydraulic excavators should be used when the quantity of work is small, the working conditions are good, and the working surface should be frequently changed; backhoes and long arm work devices can be used when cleaning and dredging riverbeds or waterways; and multiple jobs can be ordered at the same time. The device can be replaced at any time according to construction requirements, such as shovels, backhoes, grabs, hydraulic hammers, drilling rigs and other working devices for selection. When purchasing an excavator, the engineering equipment must consider the compatibility with its own existing equipment, including the matching between the excavator's operating efficiency and the existing equipment's operating efficiency. For example, the price of a small excavator is low, but it does not match with a large dump truck. In "small horse-drawn carts" and "big horse-drawn carts" do not match. In the construction practice, there is an empirical formula accepted by more construction management personnel, that is, the best cooperation between the hydraulic excavator and self-unloading heavy vehicles should be filled with dump trucks with 5-7 buckets per excavation. Its calculation formula is: where q: excavator bucket capacity (m3); Q: dump truck load (Ton); r: capacity of excavated materials. The current funding situation Users are now aware of the benefits of buying an excavator. If they can receive the project, they will be able to recover their costs quickly, which is an immediate result. We can consider a variety of purchase methods, installment payments, bank mortgages, lease purchases, and other options based on funding. If there is no problem with funds, you can consider optimizing the structure of your equipment and buying excavators of internationally renowned brands, thereby virtually increasing the competitiveness of your own large contracted projects. Operating conditions and fluidity of construction The fluidity of the engineering and construction directly affects the choice of the walker structure and working device of the excavator. When the walking part is selected, the walking parts of the excavator are generally divided into three categories according to walking patterns: crawler type, tire type, and floater type. The use of tracked excavators is relatively more, characterized by large traction, ground pressure (usually 0.04-0.15Mpa), good stability, good off-road performance and climbing performance. It is widely used in occasions with poor working conditions. According to the conditions of the ground, the standard type crawler excavator is generally used; if the ground conditions have strong carrying capacity and the ground is uneven, a narrow track-type excavator should be used. If the carrying capacity of the working ground station is poor and the soil is loose, an excavator with a crawler extension and a track plate widening type should be selected; if it is constructed in a marshland, a trackless excavator for a wetland should be used. However, please note that the longer the crawler is, the wider the tracker is the better. If the track shoes are too long or too wide, they will wear out quickly. The rollers, guide wheels and drive wheels will also be damaged due to frequent external forces. Similarly, machines with too short track and narrow track shoes are not suitable for work. Working under conditions can also cause premature damage. The use of wheel and pontoon excavators is relatively rare. The characteristics of the wheeled excavator are high transmission efficiency, fast walking speed, good maneuverability, and good mobile performance. It is generally used in conditions where the working conditions are good, and the workplace needs frequent transfer. Floating boat excavators are generally used for the cleaning of silt deposits in riverbeds, rivers, and lakes. Construction users how to buy high-quality excavator work equipment Part Selection Considerations Under normal circumstances, excavator work part includes the boom, stick, bucket and related cylinders and hydraulic lines. Because the excavator's working device part is relatively easy to replace, it can replace the corresponding working device according to different work situations to meet the needs of various working conditions. For example, the entire working device may use an extension arm (both the boom and the arm are lengthened and the bucket capacity is reduced). In this way, the excavator's excavation area is increased, and it is particularly suitable for the dredging of general rivers; when dredging, it is only necessary to work from the river banks on both sides of the river. The mine rock excavator with high working intensity needs to choose to strengthen the thickened boom arm to deal with the bad working conditions and ensure the smooth completion of the project. As far as the bucket is concerned, according to the digging conditions, it is also possible to select a standard bucket for general conditions, an enlarged bucket for loose earth, a rock bucket for rock conditions, and a dredging bucket for dredging. In addition, the bucket part can also be replaced with a crusher, which can be fully applied to the crushing of large pieces of rock. The crushing of small workload is much safer than the blasting, and the operation is convenient and the efficiency is higher. Buckets can also be replaced with catch forks and grapples. They can be fully used for the disposal of some old and used items. They can be replaced with hydraulic shears and be fully used for the demolition of buildings and other buildings. It is a good investment for units or individuals engaged in municipal projects. direction. There are many others that can be installed (such as: ripper, masher, cutting edge, pile driver, etc.). The special construction site should consider whether or not to install a protective cover to prevent falling objects or obstacles from crashing. Oil tanks; Machines that work in or on ships are sometimes equipped with hook devices to facilitate lifting of vehicles. Careful selection of model and brand According to the above four factors, the size, quantity, structure and working device of the selected excavator can be generally determined. The following three factors can determine the specific model and manufacturer of the selected control machine. . Construction users how to choose the performance and reliability of high-quality excavator machines, durability, durability of engines, hydraulic pumps, excavation valves and hydraulic motors and other major components on the machine reliability and durability is essential, these components The performance of the excavator directly affects the life of the excavator. As a power source for excavators, the engine requires high power, high torque, and environmental protection. Therefore, as the power source of the excavator, the engine that is specially designed and manufactured by the world-famous engine manufacturer for the construction machinery must be selected; the hydraulic components such as the hydraulic pump, the control valve, and the hydraulic motor should also be selected by the world-famous hydraulic component manufacturers. Only in this way can the excavator assembled and manufactured be durable. The comfort and safety of the driver's workbench, the cab environment, and the quality of the operating system are directly related to driving comfort and operational safety, and affect work efficiency. Pay attention to whether the shock absorber is installed in the cab of the excavator, how the sealing effect is, the adjustment angle and comfort of the seat, whether the air conditioner, radio, cigarette lighter, and fire extinguisher are equipped, whether there is an emergency escape device, and special conditions need to be selected. It is equipped with a cab guard and FOPS to ensure the safety of the driver. The good after-sales service of the factory's reputation and after-sales service can reduce the user's downtime and increase the economic benefits. Of course, the supply of accessories and the price level are all important factors that must be considered when purchasing equipment. Manufacturer's reputation survey due to the current production of excavator manufacturers are more, before the purchase of the manufacturers can be investigated, such as through the old users of the manufacturers to understand the use of the excavator, but also through the factory site visits or manufacturers The show will learn about the quality assurance and performance of some products. Analyze and compare the collected information and use excavators made by manufacturers with good reputation, sound sales system, and perfect quality assurance system. Manufacturers' after-sales service survey Manufacturers must have a complete service system (including service agencies throughout the country, supply of parts and components, service system during the guarantee period, development of maintenance service work outside the guarantee period, etc.) to meet The maintenance needs of the construction unit or individual after purchasing the equipment. If a manufacturer's service cannot be guaranteed, even if the machine performance is better, do not purchase such equipment. Otherwise, it will cause a lot of trouble for the user. In short, after a comprehensive analysis of the above issues, the user will certainly be less blind and more sensible when choosing an excavator. He will select one of the excavator brands that suits himself.

Take a one-year total expenditure of the excavator filter industry in Liaoning Province, and simply exchange and exchange with you. The first excavator's maintenance and repair Hitachi ZX200-1 models (general conditions) 1 The general normal work is 2500 hours, in which the oil needs to be changed 5 times, the local Guema oil is 7 barrels 350 barrels, the oil filter is 5 80 yuan, a total of 2850 yuan 2 Hydraulic oil averages once a year (including usual reserves). Jiao Ma 200 liters per barrel 3500, 2 hydraulic oil filters 150, 2 pilot filters 20, total 3840 yuan 3 butter, at least 10 barrels a year, 200 barrels, 100 oil guns, 5 greasers, 10 yuan, a total of 2150 yuan 4 diesel filter 5 times a year, each 50 yuan, there are gear oil, large pumps, rotary, walking motor on the annual 2 barrels, a barrel of 350 yuan, even a total of 950 yuan filter firewood 5 excavator bucket teeth at least 2 pairs a month (I was combined by the soil and livelihood in Liaoning Province) a 400, 20 yuan a year to pay 8,000 yuan, the maintenance of the bucket for a year about 1,000 yuan, the bucket axis And the maintenance costs for a year of about 1,000 yuan for a total of 10,000 6 chain and ground wheel, support wheel, guide wheel, tug wheel, drive gear change every 3 years enough to save it, each time the chain 15,000 yuan, 3000 yuan for the ground wheel, guide wheel 2000, tug 500, drive gear 500, processing Time and transport (to 600 yuan twice for the repair shop) 2000, a total of 23600, an average of 8,000 yuan per year 7 You can't use 10 years to rotate the market. There is nothing wrong with it. When you change the work time, it is 10,000, and the average is 1,000 yuan per year. 8 The diesel pump is once every 3 years in Liaoning, once at RMB 1,000, not more than RMB 300 per year. The annual replacement and repair costs of diesel pipes are at least 200, and the average of hydraulic oil pipes is RMB 500 per year. Antifreeze A minimum of 200 yuan a year, clean water tanks an average of 200 yuan each year (including dismantling costs), headlight replacement 100 yuan per year, O-ring one year a box of about 100 yuan, each oil tank seal 1000 a year not much (processing When) the annual various tools, gloves 200, a total of 2800 yuan, 9 The total cost of the car is 31,590 yuan, plus unexpected maintenance and other costs of 2,000 yuan a year, a total of 35,000 yuan for the second driver 1 monthly 4500 yuan, 10 months 45000 2 eat and drink at a minimum standard of 1,000 yuan, 10 months, 10,000 yuan, the third other kinds of costs you have to have a car it, pick up the driver every day 30 oil money, a month 900,10 months 9000, plus other costs of car 1000, 10,000 yuan a year, the annual trailer shipping costs at least to take 1000 yuan, and some construction sites simply do not give freight, even if it was said that the final account must be erased, the gift of gifts every year at least 2000 it, excavator devaluation ignored Do not count, bank interest, etc. are ignored when selling cars, there are vehicles overhaul the engine, and hydraulic parts, etc. are not counted, now we calculate the total cost of a year, at least 100,000 or more, I said This is what the general situation of the past can say, if the situation is even worse, even more, we all talk about how much money we can make a year? The expenses I mentioned above are all necessary to be spent. No one is giving us any reason for no reason. No one will never be damaged. I would like to take this to those who want to buy an excavator. Say: This is no longer profitable. If you buy a new car, it will be worse than what I said earlier! Excavator filter manufacturers share, do not reprint!

The use of the excavator is extensive, and it can be seen in any construction area. The mini excavator has attracted more attention because of its mini body. Its smart and convenient operation brings efficiency and quality to the project. Today, let us take a look at the advantages of small excavators. Bobcat Mini Excavator 1, because its size is not large, so the price is also cheaper, full-featured, very light in operation, has been welcomed by more people, although small but not unambiguous in the construction, and in some special places Large excavators are not available during construction. 2. It can also remove the front end bucket and install the broken hammer for road construction. The small advantage is reflected. The light weight has no more load on the ground and is also efficient in the operation process. 3, the model is different, for more consumers to choose, small excavators suitable for their own project work will bring a lot of construction assistance. (This article is from the Bobcats) Related News: Bobcat Excavator Road Construction

Truck cranes, also known as truck crane trucks, are widely used in various loading and unloading and installation lifting operations. They are particularly suitable for field hoisting and rescue operations and operations in narrow places such as stations, ports, warehouses, and construction sites. Using well-known domestic cranes and hydraulic pump systems, according to the needs of users choose different length, tonnage of cargo or crane. With high power, high speed, strong climbing ability, high lifting height and large operating range. It can realize rapid lifting and energy saving. It is flexible, convenient, safe and reliable. 1. Safety station When the truck is hoisted in the hoisting operation, the direction of the load is under the boom, under the hanging, the area where the hoist is lifted, the guide pulley rope triangle area, the fast rope around, the standing hook or the guide pulley force direction, etc. It is very dangerous, and it is extremely difficult to avoid the risk. Therefore, the position of the staff is very important. Not only do they have to pay attention to it, but they also need to remind each other and check the implementation to prevent any eventuality. 2. Correct cognition sling safety factor In hoisting operations, the correct recognition of the safety factor of the staff without slings is often based on continuous use, resulting in overweight operations that are always in a dangerous state. 3. Demolition operations must be predictable for various factors encountered For example: the weight of the object is estimated, the thoroughness of the cutting, the weight of the disassembled part is increased by squeezing, and the connecting part is forcibly lifted without being checked. 4. Prevent mistake operations Hoisting operations are not the same as many constructions. They involve large areas and often use different units and different types of cranes. Daily operation habits, performance, differences in command signals and other factors can easily lead to misoperation, so be especially careful. 5. Be sure to bind the object to be hung When the crane is dismantled at high altitudes, it is necessary to adopt [lock" rather than [pocket" for the objects to be lifted; take [cushions" measures for the sharp edges and corners of the suspended objects. 6. Roller rope is not tight Large pieces of lifting dismantling, cranes or motor winding machine winding drum rope loosely arranged, resulting in a large load fast rope into the rope, causing fast rope severe jitter, easily unstable, the results often appear to continue to work dangerous, stop Unable to stop the embarrassing situation. 7. Temporary hanging nose welding is not strong (1) Temporary hanging nose welding strength is not enough. The welding strength mentioned here is not enough because it means that the surface of the welding base metal is rusted and the rust spot is not completely removed before welding. This causes the appearance of the welding meat to be beautiful and substantial, but the actual welding of the meat and the base metal does not melt together and the load increases or suffers. Impact, it will break. (2) The nasal suction force is single direction. When lifting or tilting a long cylindrical object, as the angle of the object changes, the force direction of the hanging nose is also changing. This situation is considered insufficiently in the design and welding of the hanging nose, resulting in a defective hanging nose. Sudden occurrence of breaks in the lifting operation. In this kind of situation, it is necessary to weld the standing board on both sides of the hanging nose in advance, and the thickness of the standing board is preferably designed by a technician. (3) The nose welding material does not conform to the parent metal and the informal welder welds. 8. Improper selection of lifting tools or lifting points The lack of theoretical calculations for erecting lifting tools or the use of pipelines, structures, etc. as lifting points, and the estimation of experience for hoisting tools or pipelines or structure hangers have insufficient bearing capacity or insufficient local bearing capacity. One site is unstable and causes overall collapse. 9. Unreasonable selection of pulleys and ropes When setting up lifting tools, the lack of understanding of the changes in the force of the ropes caused by the change of the angle of the fast rope between the pulley and the pulley has been insufficient. The tonnage of the guide pulley has been selected to be too small, the rope of the pulley has been selected too thinly, and the rope is broken after the overload. fly. 10. No load sling with accidental pocket object There are many accidents that happen. The lifting work is over. When the hook is running with an empty rope, the slings in the free state hang and pull the hooked objects or other objects that have been hooked. If the commander fails to respond in time, an immediate accident has occurred, and this kind of accident has very bad consequences for the operator and the crane. 11. The hoisting construction plan is out of step with the actual operation The main manifestations are incomplete content, lack of necessary data or construction methods that are inconsistent with the actual operation conditions, so that the construction plan becomes a shield against higher level inspection and clearance, and does not play a role in guiding the construction. 12. Air suspension for a long time without safety insurance rope Some equipment or components need to be suspended in the air and fixed in place due to installation process requirements. Some suspensions stay in the air for a long time. If there are no safety insurance ropes, they will be subjected to unexpected vibrations, shocks, or welding lines. Such injuries will cause severe consequences of falling objects. 13. The process is not clear or the balance of the multi-unit construction process is flawed If a certain structure or platform is demolished but it is unclear how to handle the shift from work, whether or not Zhang San`s shed is capable of master Wang 5 does not know that A`s unit cut off the platform beam and B`s unit continues to put heavy objects on the platform, causing temporary support overload. . The result is that the problem has occurred and it is not yet known what happened. 14. The construction is busy enough to confirm the progress The underground station did not conduct underground consultation; before the operation, the weight of the lifting object was not confirmed, and the hidden dangers such as high-voltage lines, operating equipment, and leakage points of coal-oxygen pipelines in the surrounding environment and the safety warning signs of the owner`s unit were not discovered in time and they suffered major losses. . 15. Use slings with "faults" In order to save time, some people use the ropes and buckles to find them. They do not know that these are used as scraps of ropes thrown by others. Some have suffered internal injuries, some have retreated, and others have used electric welding. These problems and problems are not easy. Check out; some are willing to buy cheaper pulleys, rings, and other unqualified spreaders cheaper, so that workers work in fear. In order to ensure the safety of construction, please do not use the rope clasps thrown by others, and cut off the string of ropes that have been scrapped in time to prevent misuse by others. Do not purchase spreaders produced by informal manufacturers. 16. The rope as a safety rope Because the bearing performance of the twine is far less than that of the steel rope, and the hemp rope is vulnerable to damage and reduces the tensile force in the daily custody and use, the use of the hemp rope as a safety rope does not have a safety effect, but causes people to have psychological Dependence caused an accident. 17. No warning zone Large-scale hoisting and dangerous areas under high-altitude operations did not promptly set up safety warning areas and arrange for safety guardians, which led to the accidents of others entering the dangerous area. 18. The crane's long arm weights do not take care of the "brake lever" When the crane arm lifts the heavy object, due to the [brake" under the arm of the crane, the vertical line between the head and the weight center of gravity will change. If the lifting rod is not adjusted correctly, it will cause the heavy object to shift instantaneously, such as operation. If people do not think carefully and do not take evasive measures (especially in the air), it may be an accident. 19. Two cars with the lift and flipping of an item cannot be counted Because the center of gravity in the rollover is changing, if the calculations are not accurate, it is particularly prone to cause an overload and instability of one of the cranes. If problems occur, this not only threatens people's safety, but also has huge mechanical and economic losses. There have been profound lessons in history. It needs special attention from construction and technical personnel. 20. Work in hazardous areas did not take the necessary precautions For example, when working on overhead cranes, contact the driver of the crane in advance to confirm that the crane driver is not enough or because of an error in the busy operation of the crane driver. As a result of the failure to take warning signs, warning lights, and vehicle settings, the overhead crane suddenly appeared. Staff escaped from accidents. 21. Inadequate consideration of climate impact Lifting equipment such as gantry cranes that have not been installed in the open has not taken reliable sealing measures. The tower crane hooks suspended in use have not been raised to a safe position or anchored to lighter weights. A wind blow may cause accidents. Sometimes a sudden storm occurs to make the power supply short circuit. It is too late to lift the hook. Therefore, it is very important to develop good construction habits. In addition, wind-day large-scale hoisting must consider the factors that affect the wind load on the crane. Do not operate if there is danger or the wind exceeds safety regulations. In summary, lifting operations involve various aspects such as construction organization, job design, program development, machine tool selection, personnel operation skills, construction experience, cooperation and mutual protection, multi-type cooperation, environmental characteristics, and climatic factors. Therefore, it is necessary to do a good job. The safety work in the lifting operation needs to be highly valued in all aspects such as construction management and personnel operation, and it must be handled in strict accordance with science. More details about the car models are welcome to inquire, details of the general manager of the sales department. Sales manager, factory direct QQ, car purchase? Contact China Auto Network to see, a direct discount of 3,000 yuan, more models offer welcome to visit http://

China Automotive Network Truck Mounting Columns Listed by the Ministry of Industry and Information Technology of China with Truck Cranes All 11 Categories 164 Manufacturers 140 Truck Crane Brands 2987 Vehicle Cranes Product Information, Latest Truck Cranes Announcement, Environmental Notices , fuel announcements, exemption announcements, pictures, news, and the most timely information on the price quoted by the car. Introduction The truck lift flatbed transporter is a combination of the truck crane and the flatbed transporter. It can be used as a multi-purpose vehicle. It can be used as a truck crane, or it can be used as an engineering transporter or a cargo transporter; the truck crane flatbed transporter is commonly used. All kinds of loading and unloading, installation of lifting operations, especially for lifting in the field, in the station, port, warehouse, construction sites and other narrow places. The commonly used models include the Dongfeng lorry crane flatbed transporter and the Tianlong front four rear eight flatbed transporter. Job Requirements 1. If you are very knowledgeable about your own vehicle, you must know his function and limitations, as well as some of its special operating characteristics. 2, should be fully familiar with the contents of the operation manual of the lifting crane truck. 3, should be fully familiar with the truck crane truck lifting map. Must understand the meaning of all signs and warnings; be able to calculate or determine the actual lifting capacity of the on-board crane truck. 4, according to the requirements of the manufacturer, regular inspection and maintenance of truck lifting transport. 5, do a good job with the car lifting transport log, in the log records: all inspections, maintenance and maintenance of the lorry on the transport of a detailed record. 6, find the load, install the lock, and find out the specific location of the load. Although the operator is not responsible for determining the weight of the load, if he does not verify the weight with the supervisor, he is responsible for the lifting of the vehicle and all consequences. 7. Consider all factors that may affect the hoisting capacity of the truck, and adjust the hoisting weight accordingly. 8, know how to load the basic procedures for rigging, and ensure the implementation of specific operations. 9. Keep good communication with the signallers. 10, smooth and safe operation with the car lifting and transport. 11. When the truck is being lifted and transported and no one is operating, the work should be stopped and operated correctly.

The role of the hoisting mechanism of the truck crane is to achieve the lifting and lowering of heavy objects and the free stop of the air. According to the crane capacity, the maximum lifting capacity of 8T and below is usually used by ordinary winch mechanism consisting of motor, gearbox, reel, etc. The crane with maximum lifting capacity above 10T uses motors and brakes. Hydraulic winches consisting of gear boxes, reels, and related valve groups (To increase product reliability and enrich product configurations, winches are currently available for 6.3T and above). Lifting: The motor rotates clockwise to transmit torque and motion to the large gear in the reducer. The large gear and the gear shaft are connected with the left thread. The clockwise rotation of the motor input makes the gear rotate counterclockwise; the left thread makes the big gear. Move to the right axially, press the friction plate, ratchet wheel and brake disc; the brake disc transmits torque to the gear shaft through the key, so as to drive the large ring gear and the reel on the reel to rotate clockwise, and realize the wire rope and the pulley block. The lifting of the hook. Pawls do not work during this process. Falling: The counter-clockwise rotation of the motor rotates the counterclockwise gear, the left-hand thread moves the bull gear to the left, and the large gear, friction plate, ratchet, and brake disc disengage from each other to create a certain clearance. The heavy object makes a free fall to make the reel and large The ring gear rotates clockwise. When the rotation speed of the gear shaft and the brake disk is equal to the motor rotation speed, each piece of the friction plate is in a critical state of compression, and the speed of the weight drop exceeds the speed of the motor transmission, and the mechanism generates a brake; the motor Continue to turn to open the friction, the weight began to fall again, so that repeated, so that the weight of the smooth landing on the ground. In this process, the pawl is combined with the ratchet, and the ratchet is stationary. Stop: If the weight is in any position in the air, as long as the rotation of the motor is stopped, the clearance at the friction plate will be eliminated by the motion generated during the falling of the weight. At this time, the ratchet is suppressed and the gear shaft has a tendency to rotate clockwise due to spines. The action of the claw causes the mechanism to stand still and the weight falling motion is braked. The hydraulic winch reducer is a planetary gear structure, compact, and it is built into the drum inside the drum. The brake is normally closed, always holding the reel; when the reels need to be rotated, the control valve is operated and the reel can be rotated while the brake is opened by the shuttle valve. In order to ensure the smoothness and reliability of the operation, hydraulic winches are usually equipped with bidirectional balancing valves, overload valves, and the like. Therefore, the performance of the hydraulic winch is better than the ordinary winch mechanism, but due to the high cost, its application range is subject to certain restrictions. Want to know more information about truck crane and contact with truck crane?

After spending more than 100,000 or hundreds of thousands of dollars on buying a new special car, many drivers will be very careful about using their own cars, fearing to ruin some parts of the car. The maintenance of new cars is also particularly frequent, but they do not know that excessive maintenance will also affect special vehicles. Today, Xiaobian mainly discusses the impact of excessive maintenance of the truck crane. First, always think that the more oil the better If the oil is too much, it will increase the internal power loss of the engine, and it will also cause the vehicle to burn oil. Therefore, it should be noted that when adding the oil, do not exceed the oil scale or a little bit below the oil scale. Second, always think that high-grade fuel is good for the engine High-grade fuel is not good for every car. The key is to look at the value of the engine's compression ratio. The engine compression ratio should normally be 93. , And the engine compression ratio of more than ten five should use 97 gasoline. Third, always think that imported tires are durable Experts remind that the road conditions at home and abroad are very different. Imported tires may perform well in foreign countries, but not necessarily on domestic roads. Things suitable for foreign use may not be easy to use in the country. Many people have the feeling of esteem, always feel that everything abroad is good, and some people even choose to buy a small thing abroad. Xiao Bian wants to say that it is not necessary. Now that the quality of domestic products is better, the domestic tires are also easy to use. Editor's Note: Although buying a new car costs a lot of money, it cannot be over-maintained. Too good to maintain is not only a waste of time and money, but also not conducive to the daily use of the car. Drivers can follow the instructions for proper maintenance.

The truck-mounted flatbed transporter is a combination of a truck-mounted crane and a flatbed transporter. It can be used as a truck, and it can be used as a truck crane, as an engineering transporter, or as a freight transporter; the truck-mounted pallet transporter is often used in various applications. This type of loading and unloading and installation of lifting operations is particularly suitable for field lifting, and operates in narrow places such as stations, ports, warehouses, and construction sites. The commonly used models include the Dongfeng lorry crane flatbed transporter and the Tianlong front four rear eight flatbed transporter. 1. If you are very knowledgeable about your own vehicle, you must know his function and limitations, as well as its special operating characteristics. 2, should be fully familiar with the contents of the operation manual of the lifting crane truck. 3, should be fully familiar with the truck crane truck lifting map. Must understand the meaning of all signs and warnings; be able to calculate or determine the actual lifting capacity of the on-board crane truck. 4, according to the requirements of the manufacturer, regular inspection and maintenance of truck lifting transport. 5, do a good job with the car lifting transport log, in the log records: all inspections, maintenance and maintenance of the lorry on the transport of a detailed record. 6, find the load, install the lock, and find out the specific location of the load. Although the operator is not responsible for determining the weight of the load, if he does not verify the weight with the supervisor, he is responsible for the lifting of the vehicle and all consequences. 7. Consider all factors that may affect the hoisting capacity of the truck, and adjust the hoisting weight accordingly. 8, know how to load the basic procedures for rigging, and ensure the implementation of specific operations. 9. Keep good communication with the signallers. 10, smooth and safe operation with the car lifting and transport. 11. When the truck is being lifted and transported and no one is operating, the work should be stopped and operated correctly.

The truck-mounted crane truck mainly consists of two parts, the chassis and the top, and the top and the sub-carriage and the crane. The operator hoists the goods he wants to transport into the cargo compartment through the crane. The crane is also an important part of the entire vehicle. The crane crane truck is divided into two types: straight arm and crank arm. What should be paid attention to during crane operation? 1. When there is a person standing on a lift cargo or the cargo is not fixed firmly, do not operate the crane immediately. This is prone to accidents. The above is clearly stated in the crane operation manual. 2. Before the truck crane truck is operated, it is necessary to check whether the operation devices are normal, whether the wire ropes meet the safety requirements, and whether the brakes, hydraulic devices and safety devices are complete and there are no faults. During the operation of the truck lifting truck, no loose parts are allowed. 3. The boom elevation angle must not be less than 30°, and cranes should avoid lifting booms under load conditions. It is strictly forbidden to change the joystick before the jib can reach a stable position. Please follow the operating instructions step by step. 4. The darkness of the work place is dark and the situation around the site cannot be seen at all. In this case, it is best not to perform any operation. The light is dark and it is impossible to see the operation light and the object being lifted. 5. When the truck is lifted by the truck, it is forbidden to stand under the hook and boom. This also means that there will be reminders on each crane. It is best not to chat with other people during the operation to avoid outsiders touching the operating lever. 6. The driver and the lifter must closely cooperate and obey the signal command of the commander. Before the operation, the horn must be honking. If it is found that the command is unclear or wrong, the driver has the right to refuse execution. At work, the driver must immediately stop the emergency stop signal sent by any person and continue to work until the insecurity is eliminated. 7. The lifting crane of the lorry is strictly prohibited from overloading the hoisting cargo. After overloading, the crane can be easily bent. The steel rope can be easily broken, which not only damages the interests but also causes unnecessary injuries. If two cranes are used to lift a heavy object at the same time, there must be special personnel to conduct the command. The speed of the two vehicles must be kept equal, and the weight of the object must not exceed 75% of the total lifting capacity of the two vehicles. When lashing the sling Pay attention to the distribution of load, and the load shared by each vehicle must not exceed 80% of the maximum allowable weight. Editor's Note: With the truck crane truck as a special special vehicle operating tool, each operator must strictly operate in accordance with the requirements to ensure safety. It is forbidden to use overloaded equipment. It is forbidden to rotate the heavy load at high speed to avoid overturning.

China Automotive Network Truck Crane Columns Listed by China Ministry of Industry and Information Technology Automobile Cranes Automobiles Announcement All 4 Categories 40 Manufacturers 35 Truck Crane Brands 1258 Truck Cranes Product Information, Latest Truck Crane Announcements, Environmental Notices, Fuel Bulletins, Free Announcements, pictures, news and information on the most timely prices of truck crane quotes. JB8716-1998 This standard will replace ZB J80 002-86 from the date of implementation. This standard was proposed and managed by the Changsha Construction Machinery Research Institute of the Ministry of Construction. This standard was drafted by the Ministry of Construction: Changsha Construction Machinery Research Institute. The main drafters of this standard: You Xiaoping, Cao Zhongmei, Huang Yihong. This standard was first published on November 4, 1986. This standard was commissioned by the Changsha Construction Machinery Research Institute of the Ministry of Construction to be responsible for the interpretation. 1 Scope This standard specifies the safety technical requirements for the design, manufacture, inspection, scrapping, use and management of truck cranes and tire cranes. This standard applies to truck cranes and tire cranes (hereinafter referred to as cranes). 2 Reference standards The provisions contained in the following standards are incorporated into this standard and constitute the provisions of this standard. At the time of publication, the editions indicated were valid. All standards will be revised and all parties using this standard should explore the possibility of using the latest version of the following standards. GB 700--88 ordinary carbon structural steel GB 979-88 High Quality Carbon Steel GB 1591-88 Low alloy structural steel technical conditions GB 3766-83 general technical conditions of hydraulic system GB 3811-83 crane design specification GB 4785-84 Provisions for the number, location and light color of exterior lighting and signalling devices for cars and trailers GB 5972-86 Steel Wire Rope Inspection and Disposal Practice for Hoisting Machinery GB/T 5973-86 Wedge joints for wire ropes GB/T 5975-86 wire rope press plate GB/T 5976-86 wire rope clamp GB 6067-85 Crane Safety Regulations GB 6068.1-85 General Requirements for Test Codes for Truck Cranes and Tire Cranes Determination of the stability of GB 6068.3-85 truck crane and tire crane test specification GB 7258-1997 Operational Safety Technical Conditions of Motor Vehicles GB 7950-87 General Specifications for Lifting Torque Limiter for Jib Cranes GB 10051.1-88 lifting hooks, mechanical properties, lifting capacity, stress and materials GB 11352-89 Technical conditions for casting carbon steel for general engineering JB 2299-78 Mining and Engineering Lifting and Transporting Machinery Products Paint Color and Safety Signs JB 3774.1-84 Construction Machinery Noise Limit JB 4031-85 Truck Crane and Tire Crane Signage ZB E39 003-87 Selection and Replacement of Hydraulic Oils for Truck Cranes and Tire Cranes ZB J80 003-87 Technical Requirements for Truck Cranes and Tire Cranes 3 3.1 The operating conditions of the crane shall comply with the provisions of ZB J80 003 and GB 6068.1. 3.2 The crane shall have a rated lifting weight table, lifting height curve signs and other safety signs. They must be fixed in a position easily visible to the operator. Its content and format should refer to the provisions of JB 4031. At the same time, the words [No stand under the jib arm" should be written in a prominent font in the proper position of the main arm. 3.3 For telescopic cranes that are not equipped with a moment limiter, their arm lengths are to operate at the midpoint of a given length on the rated lifting capacity table, and at their respective amplitude, they are allowed to have a smaller value for the rated lifting weight of the adjacent arm. 3.4 When the crane is delivered from the factory, the product label shall be fixed in a prominent position. 3.5 The random technical documents provided by the crane at the factory shall meet the requirements of 2.19 in ZB J80 003-87. 3.6 Unqualified cranes are not allowed to leave the factory. 3.7 During the test of the crane, safety precautions shall be taken in the dangerous conditions that may be caused to ensure the safety of the personnel and the whole machine. 3.8 The stability of the crane shall comply with the provisions of GB 6068.3. When the crane is conducting a stability test, in addition to the special requirements in the contract, the test load shall be determined by the following formula: a) 1.25Pi+0.1Fi when supporting legs b) Wheel (tire) support (static) 1.33Pi+0.1Fi c) When traveling with load (carrying speed is less than or equal to 14km/h) 1.33Pi+0.1Fi d) When traveling with load (carrying speed greater than 14km/h) 1.5Pi+0.1Fi Where: Pi - rated weight; Fi - The weight of the boom G is converted to the weight of the boom head or the jib head. 3.9 When lifting legs are used for lifting work, the legs shall be firmly supported on a solid level ground. The slewing bearing plane shall be installed on the frame with an inclination of not more than 0.5%. 3.10 The paint colors and warning patterns of cranes shall comply with JB 2299. 4 Structure and Construction 4.1 Materials 4.1.1 The main load-carrying structural members of the crane's metal structure generally adopt the quality carbon steels Q235-B, C, D and GB 699 specified in GB 700 and the low-alloy structural steels 16 Mn specified in GB 1591. , 15 MnTi and so on. The main bearing structure of the crane should be killed steel. The impact energy of the steel at the corresponding use temperature shall not be lower than 27 N·m for Q235-B, C, D steels and 40 N·m for other steels, and shall meet the 180° cold bend test requirements at room temperature. The Q235-D steel, 20 steel, etc. used for the main load-bearing structural parts of cranes operating in areas below 20°C should have a 20°C impact toughness qualification guarantee; for a 16Mn, 15MnTi steel, etc., a 40°C impact toughness qualification guarantee must be provided. . If necessary, it shall have the qualification guarantee of cold bending test. Steel castings shall comply with the steel grades specified in GB 11352. 4.1.2 The factory inspection system shall be implemented for the raw materials used. 4.2 Connection 4.2.1 welded connection The welding requirements for the major weld structures of main load-bearing structures such as base frames, legs, turntables, and booms, as well as general load-bearing structures, shall comply with the provisions of 1.2 of GB 6067-85. Weld quality should meet design requirements. 4.2.2 Rivet Connections and Bolted Connections 4.2.2.1 Rivet connections and bolt connections are to comply with the provisions of 3.4.2.2 of GB 3811-83. 4.2.2.2 Connections with high-strength bolted joints shall be free from dust, paint, traces of oil and corrosion on their joint surfaces. Must use torque wrench or special wrench, according to assembly technology requirements tighten. 4.3 Cab and Control Room 4.3.1 The cab and control room must meet the requirements of 4.12 in ZB J80 003-87 and 1.4 in GB 6067-85. 4.3.2 The top of the cab and control room can withstand a load of 1 000 N distributed over an area of (30 x 30) cm2 without permanent deformation. 4.3.3 The control room should be equipped with sun visors and wipers. 4.4 Retirement of Metal Structures 4.4.1 The scrapping of metal structures shall comply with the provisions of 1.10 of GB 6067-85. 4.4.2 For components that have been replaced or repaired after the stabilizers or undercarriage have been replaced or repaired, the stress shall not be higher than the original calculated stress, otherwise it shall be scrapped. 5 Institutions and Parts 5.1 General requirements 5.1.1 Lifting arm For telescopic booms, the maximum average lateral clearance of each joint arm shall not exceed 2.5 mm. Otherwise, the slider needs to be adjusted. 5.1.2 Outriggers 5.1.2.1 When the crane is in a running state, the legs should be retracted and fixed securely. 5.1.2.2 When operating the outrigger, the operator should be able to see each outrigger at the operation. Otherwise, there should be help from signal personnel. 5.1.2.3 In the lifting operation, the support plate should be firmly connected to the legs, and the legs should support the crane reliably. 5.1.3 Protection of moving parts All exposed moving parts (such as open gears, chains, sprockets, protruding pins, bolts, couplings, reciprocating parts, etc.) that may be dangerous under normal working conditions should be installed with protection Device (protective cover or guardrail). 5.1.4 Brakes shall be equipped with rain protection devices. 5.1.5 The exhaust pipe of the engine should be equipped with a muffler. The exhaust pipe should be located away from the operator. Noise limits when the crane is running shall meet the requirements of GB 7258, and the noise limits during lifting shall comply with JB 3774.1. 5.1.6 The capacity of the fuel tank should at least ensure the normal operation of the crane for 8 hours, and should be equipped with a device to measure the amount of oil in the fuel tank. 5.2 Hook 5.2.1 Design and selection of the hook shall comply with the provisions of GB 10051.1. 5.2.2 The hook should meet the requirements of 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.6 and 2.1.7 of GB 6067-85 Provisions. 5.2.3 hook welding is prohibited. One of the following cases should be scrapped: a) Observe cracks and cracks on the surface with a 20x magnifying glass; b) permanent deformation of dangerous sections and hooks such as hook tails and threaded parts; c) The wear of the cross section of the lanyard exceeds 5% of the original height; d) The opening is 10% larger than the original size. 5.3 wire rope 5.3.1 The selection of wire ropes and the determination of the safety factor shall be in accordance with 4.4.2.1, 4.4.2.2 of GB 3811-83 and 4.10.1, 4. of ZB J80 003-87. The provisions of 10.2. 5.3.2 The type, specification and length of wire rope shall be stated in the random use instructions. 5.3.3 The installation, inspection and scrapping of steel wire ropes shall comply with the provisions of GB 5972. 5.3.4 The fixing of the end of the wire rope should meet the following requirements: a) When fixed by wire rope clamps, it shall meet the requirements of GB/T 5976, and the strength of the fixing shall not be less than 85% of the breaking force of the wire rope; b) When inserting and fixing, the length of the braiding should not be less than 20 times the diameter of the steel wire rope and not less than 300mm, and the fixing strength should not be less than 75% of the breaking force of the wire rope; c) When the wedge and wedge sleeve are fixed, the wedge and wedge sleeve shall meet the requirements of GB/T 5973, and the strength of the fixed joint shall not be less than 75% of the breaking force of the wire rope; d) When fixed by conical sleeve casting method, the fixing strength should reach the breaking force of the wire rope; e) When using aluminum alloy sleeves and steel sleeves, the aluminum alloy sleeves, steel sleeves and wire ropes should be tightly and firmly bonded together with a reliable process method. The strength of the fixed joints should reach 90% of the breaking force of the wire ropes. f) When fixed with a pressure plate, the pressure plate shall meet the requirements of GB/T 5975, and the strength of the fixation shall reach the breaking force of the steel wire rope. 5.3.5 Wire ropes should be arranged in order on the drum. 5.3.6 Lifting wire ropes should use wire ropes that do not rotate or loose. 5.3.7 Maintenance of Wire Ropes a) In addition to complying with the provisions of GB 6067, the wire rope shall also be maintained according to the following provisions: The wire rope shall be lubricated at least twice a month before use; clean the wire rope with a cloth before lubrication, and then apply grease or grease; The types of lubricating oils and greases shall comply with the factory instructions of the wire rope factory. b) Before cutting off the wire rope, bundle it on both sides of the wire rope cut to prevent the rope strands from spreading. 5.3.8 Wire Rope Inspection The ropes of the hoisting mechanism shall be inspected at least once a week. The rest of the operating ropes shall be inspected at least once a month. The condition report of the ropes shall be filled in in detail, be dated, signed and put into the equipment file for future reference. When the crane is parked or stored so that all steel ropes are idle for one month or more, a thorough inspection should be performed before re-use. 5.4 Reels and Pulleys 5.4.1 The calculation of the minimum winding diameter of reels and pulleys shall comply with the provisions of 4.4.2.3 of GB 3811-83. 5.4.2 Lifting drums shall have a sufficient amount of rope capacity. When the hook is at the lowest position specified by the manufacturer, at least three loops of wire rope must be retained on the drum and appropriate protective measures must be taken. The height of the sides of the roll should exceed 1.5 times the nominal diameter of the outermost wire rope in operation. 5.4.3 Retirement of Reels and Pulleys One of the following conditions for reels and pulleys should be scrapped: a) crack or rim damage; b) The wear of the drum groove exceeds 25% of the wire rope diameter; c) The wear of the welded pulley exceeds 20% of the rim plate thickness; d) The other pulley groove bottom wear exceeds 25% of the wire rope diameter. 5.5 Lifting mechanism 5.5.1 Each independent drive unit of the hoisting mechanism shall be equipped with at least one supporting brake. The supporting brake shall be normally closed. It must be able to sustainably support the rated weight. The brake must be installed in the transmission. The mechanism is rigidly coupled to the load shaft. 5.5.2 The hydraulic circuit of the hydraulic lifting mechanism must be equipped with a balancing valve that is compatible with its flow. 5.5.3 For special lifting mechanisms that require gravity to be used, there shall be reliable and actuatable brakes. 5.6 Luffing Mechanism 5.6.1 The luffing mechanism shall be able to reliably support the boom and allow the boom to be smoothly lowered to the specified amplitude under operator control. 5.6.2 The lifting of the boom must rely on the power system to complete. 5.6.3 Normally-closed brakes shall be provided in the mechanism for lifting the boom by wire rope. 5.6.4 The mechanism for lifting the lifting boom with a hydraulic cylinder must be equipped with a balancing valve that is suitable for its flow rate. 5.7 Lifting arm telescopic mechanism Retractable hydraulic cylinders must be equipped with a balancing valve that is suitable for their flow. 5.8 Slewing Rings and Slewing Mechanisms Slewing rings and slewing gears are to comply with the requirements of 4.9 of ZB J80 003-87. 5.9 Use and Inspection of Brake 5.9.1 The brake selection of each institution shall comply with the provisions of GB 3811. 5.9.2 Before each shift, it is necessary to check whether the brake operation is normal and whether there is any seizure. Then lift the heavy object 150-200mm from the ground, hold it for 10 minutes, check the brake, and confirm that it is normal before lifting. 5.9.3 One of the following conditions for brake parts shall be scrapped: a) crack; b) The brake pad friction pad wear amounted to 50% of the original pad thickness; c) The wear of the brake wheel surface is 1.5 ~ 2mm (larger than 300mm wheel diameter, otherwise take a small value); d) plastic deformation occurs in the spring; e) The solenoid lever system has an idle stroke of more than 10% of its rated travel; f) The starting stroke of the solenoid core exceeds half of the rated stroke; g) The contact area of the brake pad friction pad and the brake roller is less than 70% of the theoretical contact area; h) failure of brake pads; i) The amount of friction of the friction lining on the brake pad is too large to disable the disc brake. 5.10 Driving and Braking 5.10.1 Cranes shall meet the requirements of ZB J80 003. 5.10.2 On concrete or asphalt pavement, when the maximum traveling speed of the crane exceeds 30km/h, braking shall be carried out at a speed of 30km/h; When the maximum traveling speed of the crane is less than 30km/h, braking is performed according to the maximum traveling speed of the crane. The braking distance should not exceed the design specification. 5.10.3 The parking brake of the crane must enable the crane to reliably stop at the specified maximum slope. 5.10.4 The crane's driving system and service brakes shall comply with the provisions of GB 7258. 6 Hydraulic system The hydraulic system shall comply with the provisions of GB 3766, GB 6067 and ZB J80 003. 6.1 The hydraulic system shall have safety devices to prevent overload. The set pressure of the safety relief valve shall not be greater than 110% of the rated working pressure of the system, and shall not be greater than the rated pressure of the hydraulic pump. 6.2 The balance valve and hydraulic lock must be rigidly connected to the actuator. 6.3 The maximum working oil temperature in the hydraulic tank must not exceed 80 °C. 6.4 If the parts with relative movements are connected by hoses, the length of the hoses should be shortened as much as possible and frictional collisions should be avoided. Exposed hoses that are susceptible to damage should be protected by a protective sleeve. Check the various links in the system regularly. 6.5 Reliable filters should be used. Oil viscosity, acid value, water content, and solid particle contamination must be regularly checked. If it does not meet the requirements, it should be promptly replaced. Its requirements shall comply with the provisions of ZB E39 003. Replace the hydraulic fluid with the appropriate viscosity according to the season of use. Mixing oil is strictly prohibited. 6.6 When using accumulators in the system, safety warning signs must be marked on or near the accumulator. Accumulator volume and installation must comply with manufacturer's regulations. 7 safety protection device 7.1 Cranes with a capacity of 16t and over 16t shall be equipped with a torque limiter, and their requirements shall comply with the provisions of GB 7950. 7.2 Cranes with a lifting capacity of less than 16 tons shall be equipped with a weight indicator. Their requirements shall be in accordance with 7.4 of ZB J80 003-87. 7.3 Cranes shall be equipped with lifting height limiters. The lifting height limiter shall be able to reliably alarm and stop the lifting of the hooks. Only descending operations may be performed. 7.4 Cranes using wire rope luffing should be equipped with amplitude limiting devices and devices to prevent the tilting of the boom. 7.5 The crane shall be equipped with a clearly visible amplitude indicator (or elevation indicator) whose requirements shall comply with 7.3 of ZB J80 003-87. The installed amplitude indicator should be easy for the driver to observe while operating. 7.6 Cranes shall be equipped with spirit levels for cranes with a capacity greater than or equal to 16 tons. 7.7 The crane should be equipped with a horn. The position of the horn button should be easy for the driver to operate. 7.8 For gantry cranes with lifting height greater than 50m, an anemometer should be installed at the arm head. When the wind speed is greater than the working limit wind speed, it should be able to issue an alarm to stop the operation. 7.9 The pulley should have anti-roping rope skipping device. For a hand-accessible pulley block, a protective device shall be provided to prevent the hand from squeezing between the wire rope and the pulley. 7.10 Cranes that can be operated in two places shall be provided with interlocking protection devices to prevent simultaneous operation. 7.11 Newly designed crane transmissions and safety devices must undergo various tests of the components in accordance with the relevant special test standards. 8 Electrical system 8.1 Electric powered cranes shall comply with the provisions of GB 6067 and ZB J80 003. 8.2 The electrical connections should be in good contact to prevent loosening and the wires and harnesses should be securely fixed. 8.3 Power-driven cranes must be provided with an emergency switch capable of switching off the mains supply. The installation site should be easy for the driver to operate. 8.4 An internal combustion engine-driven crane shall be provided with a flameout device in the upper cab control room. 8.5 All electrical controllers that control the motion of the crane mechanism shall have zero and ground protection. 8.6 The lighting and signaling devices of the crane shall comply with the relevant provisions of GB 4785 and GB 7258. 8.7 The crane should be equipped with lighting equipment for evening operation. 9 operating system 9.1 The layout of the control system should avoid misoperation and be easy to operate. 9.2 Joysticks and pedals shall be automatically reset when rigid retaining devices are not used. 9.3 There shall be clear signs indicating the use and direction of operation on or near all joysticks, pedals, etc. 9.4 The operation shall be light and flexible. The operation force and operation stroke shall comply with the provisions of ZB J80 003. 9.5 Cranes operated with joysticks and foot pedals are arranged as shown in Fig. 1. 9.5.1 Swivel Operation - Handle 1: Push the handle forward (away from the driver). - Swivel to the right (control room left or center); - Turn left (control room is right). When the handle is in the middle position, the rotary power is cut off. Pull the handle backwards (towards the driver) and turn it in the opposite direction. 9.5.2 Telescoping controls - handle 2 or pedal 5: Push the handle forward and extend the boom. With the handle in the middle, keep the boom in place. Pull back the handle and retract the boom. Pedal 5 is available as an alternative to handle 2 . 9.5.3 Luffing - Handle 3: Pull back the handle and raise the boom. With the handle in the middle, keep the boom in place. Push the handle forward and lower the boom. 9.5.4 Lifting controls - handle 4 and brake pedal 6: Pull the handle backwards, lift the load, cut the lifting power when the handle is in the middle position, and keep the load (if equipped with automatic brake) or control the load by pressing the brake pedal. Push the handle forward and lower the load. 9.5.5 Figure 1 shows the basic layout of crane operation; generally, the handle or pedal in Figure 1 can be increased or decreased as required. 9.6 The pilot operated crane is arranged as shown in Fig. 2. 9.6.1 Lift II and Swivel Operation - Handle 1 and Pedal 5 9.6.1.1 Pull back the handle to lift the load. With the handle in the neutral position, keep the load still (if equipped with an automatic brake) or depress the brake pedal to control the load. Push the handle forward and lower the load. 9.6.1.2 Move the handle to the left and turn it to the left. When the handle is in the middle position, the rotary power is cut off. Move the handle to the right and turn it to the right. 9.6.2 Lift I and Lever Control - Handle 2 and Pedal 6 9.6.2.1 Pull back the handle to lift the load. With the handle in the neutral position, keep the load still (if equipped with an automatic brake) or depress the brake pedal to control the load. Push the handle forward and lower the load. 9.6.2.2 Move the handle to the left and raise the boom. With the handle in the middle position, keep the boom in place. Move the handle to the right to drop the boom. 9.6.3 Telescopic boom control 9.6.3.1 Handle 3: Push the handle forward and extend the boom. With the handle in the middle position, keep the boom in place. Pull back the handle and retract the boom. Note: The handle 3 can be an independent handle, and the telescopic function of the boom can be the forward and backward movement of the handle 1 . 9.6.3.2 Use footrest 4 (optional) instead of handle 3: Push the pedal forward (toe down pressure) and the boom extends. When the pedal is in the middle, keep the boom in place. Push the pedal backward (heel down) and the boom retracts. 10 Use and Management 10.1 The crane use conditions must comply with the provisions of ZB J80 003. When exceeding the above requirements, the user shall negotiate with the manufacturer when ordering. 10.2 The user must establish a crane equipment file. The file should include: a) Every time you start, record with time, location and working condition; b) records of daily use, maintenance, repairs, changes, inspections and tests; c) Equipment and personal accident records; d) Problems and evaluations of equipment. 10.3 The crane must be maintained regularly and no sick work is strictly prohibited. 10.4 When working near power lines or in areas with strong electromagnetic induction, cranes should be provided with proximity power line alarms or electromagnetic wave induction measures. The minimum distance between the lifting arm, spreader, auxiliary equipment, wire rope, cable wind rope, and heavy object, etc., and the transmission line should not be less than the requirements in Table 1. Table 1 Minimum distance to transmission lines [td 142 ] Transmission line voltage V kV [td 69 ]<1 [td 72 ]1 to 35 [td 96 ]≥60 [td 142 ] Minimum distance m [td 69 ]1.5 [td 72 ]3 [td 96 ]0.01 (V-50)+3 10.5 The crane shall not operate in dark trenches, underground pipelines, air-raid shelters, etc. 10.6 Do not overload the work. Do not allow diagonally slanting items, do not allow to hang staggered items, and do not allow to hang objects buried in the ground or frozen on the ground. 10.7 It is generally not allowed to use two or more cranes to lift a heavy object at the same time. The special circumstances need to be used shall comply with the provisions of GB 6067-85 5.1.2.3. 10.8 It is forbidden to carry gravity down. 10.9 The wind power of the crane must not exceed the specified value of the product instruction manual. 10.10 Before lifting the work with the legs, the legs must be firmly and reliably laid out according to the instructions. 10.11 During the operation of the crane, no one shall stand on the turntable. When the truck crane is in motion, it is forbidden to sit on the cab control room. 10.12 When lifting a work, it is forbidden to stand under the jib, and it is not allowed to lift heavy objects when someone is on the weight. Workers on the job site wear helmets. 10.13 The crane should be shut down during maintenance. When checking the amount of fuel or adding fuel, do not smoke or use open flame lighting. 10.14 The management of cranes shall comply with the provisions of 5.2 of GB 6067-85. 11 Driver and Crane Command 11.1 Crane drivers and lifting conductors must pass through the body. After passing inspections and examinations, they will be able to operate and direct with an operation certificate and a commanding certificate. 11.2 The crane driver must understand the working principle, be familiar with the structure of the crane, the function of the safety device and its adjustment methods, and master the operation methods and maintenance techniques. 11.3 When the heavy object is in suspension, the driver and lifting command must not leave the job. 11.4 The crane driver must concentrate on his operations and cannot chat with other people. Only respond to signals from designated commanders. But for the stop signal, no matter who sent it. Obey at all times. Drivers should refuse to perform instructions that do not comply with the operating instructions. When someone climbs on a crane, they must stop. 11.5 When the crane driver is unwell or has a bad spirit, the crane should not be operated. The driver is strictly prohibited from drinking.

As a new type of truck mounted crane that has been prevalent in China in recent years, truck mounted cranes have gradually been welcomed by people due to their convenient homework and good sensitivity. Especially in the southern region, more and more people have taken and purchased such models. But for many people who have never been in contact with it, the car is still very rusty car models. In particular, its boom is inserted. Some models are behind the cab and some are on the rear. What are the advantages of the two types of booms? Xiao Bian asked the local machinery industry professionals to clarify the benefits of the Dongfeng RV crane in two ways. ● Mid-mounted (cab rear) Specializing in the production of various types of Dongfeng Duolika truck crane, you are welcome to telephone consultation on Dongfeng Duolika truck crane with detailed information, pictures and quotes! Dongfeng Doolika is equipped with many types of vehicle cranes, and there are also slight differences in the application range of various Dongfeng Dolika truck cranes. Our Chengli Motors will provide you with a full range of solutions. This type of truck-mounted crane is often seen in China's truck-type devices, and the boom is also small. The advantages and disadvantages of this type of boom are as follows. Strengths: 1: The jib is close to the cab and it is convenient for the driver to start the task quickly. 2: The line is inserted briefly defect: 1: The jib is located in the back of the cab of the truck, and the hoisting capacity will be subject to considerable restrictions. 2: The lifting requirements of the rules, the lifting of the goods can not be through the cab, this is in case of loss of goods falling down collapse of the cab to form casualties. 3: Because of the status of the device, it is not possible to carry out 360-degree lifting and homework assignments for the crane attachments. ● Rear-mounted crane (vehicle rear) The tail-mounted crane cranes have a variety of booms, such as telescopic, folding, and so on. This is also the most widely used crane method currently used. In addition to cargo trucks that can be installed, special vehicles such as rescue vehicles used in firefighting also have devices. Strengths: 1: The task is limited, and it is not restricted by the placement of vehicles. It can complete the lifting task with 360 degrees. 2: Large lifting capacity can be used to install large-tonnage cranes. 3: There are various ways of boom device. defect: 1: pipeline installation complexity

Dongfeng trucks are increasingly used in southern China. The most common crane accessories on the market today are telescopic arms and folding arms. What are the advantages and disadvantages of these two kinds of suspension arms? How do we choose this? For this purpose, Hubei Suizhou Xigong Chusheng Specialist Auto will introduce it to everyone. There are two advantages and disadvantages of the truck crane. Because the folding arm truck crane uses multiple hydraulic cylinders to form a joint-like boom connection mechanism, the completion of the movement is faster and the work efficiency is higher. The telescopic boom truck crane adopts a hoisting mechanism for retracting a steel wire rope. The drum is rotating and retracting the rope, the hook is raised, and the reversing rope hoisting hook is lowered. The work efficiency is relatively low. ● The telescopic arm truck crane has a wider working radius With the same arm length, the telescopic boom can also extend the working depth by placing a wire hook on the truck crane, and the deeper work required by the folding arm truck crane is not easy to complete. ● Folding arm is more suitable for narrow working environment This is determined by its structure. The folding arm truck crane is more suitable for a relatively small working environment such as a factory warehouse, and the telescopic arm has a larger display space due to its structure. ● Telescopic arm makes it easier to control vertical take-off and landing The lifting arm of the lifting and lowering of the steel wire rope can be used for the telescopic arm to strictly control the lifting of the hanging object. The hydraulic arm of the folding arm truck crane makes it difficult to control the vertical take-off and landing of the lifting object. ● The folding arm can be equipped with various auxiliary tools The folding arm is equipped with hydraulic cylinders on the truck crane to form an arm-like manipulator. It can be equipped with empty work platforms, work buckets, clamps, hanging baskets, plate forks, various types of grippers, augers, and tires. Puller and other auxiliary equipment. Since the front end of the telescopic arm is a soft steel wire rope, few telescopic arms are equipped with auxiliary tools. Xiagong Chu Sheng Special Vehicle Contact: Manager Wang Tel.

The most important part of truck-mounted cranes is sprinkler tanks and cranes. Compared with tanks, truck cranes are more important because they have to provide high altitude for vehicles. Therefore, it is necessary to ensure their safety. Sex, must choose to hang with the car. So, how to choose the truck crane above the truck crane? This article introduces you to this knowledge. 1, see the crane. The most critical part of the truck crane is the crane. The lifting capacity of the truck crane is also a good indicator of whether the crane is good or bad. The crane can be divided into two types: folding arm and telescopic arm. The specific choice depends on the specific work requirements and the environment; there are many brands in the crane, and well-known brands such as stone coal machine, Yutong Heavy Industry, and XCMG can choose; The tonnage of the healer crane needs to see what the specific cargo is to be lifted. It is better to determine the tonnage according to the demand; the layout of the crane has two types, the rear-mounted and the mid-mounted. The layout of the crane should be considered in accordance with the form of the crane. the way. 2, with the car hanging chassis. The reliability of the collocation has nothing to do with the safety factor of the state of the truck crane. To ensure the quality of the chassis, it is best to choose the products of well-known brands such as Foton, Liberation, Dongfeng, etc.; the chassis also needs to interact with the tonnage of the truck crane. Echoing, the small car will have a small crane and the large crane will need to be a big car. Pay special attention to the fact that many people will refit the chassis when buying a car. Generally speaking, it is not advisable to carry out modifications when there is no problem with the chassis. Otherwise, it is prone to danger. 3, with the car hanging cargo box. There are two kinds of flats and slats in the lorry carrying case, of which the latter is more common; the length of the lorry needs to be determined according to the announcement of the lorry crane. Like the 4x2 model, it is necessary to arrange a 5.8 to 6.1 m container. Too long or too short will affect normal work. How to choose the truck crane above the truck crane? Truck crane main selection is the three aspects, when there is a need to buy a truck crane sprinkler, you can pay attention to these aspects of knowledge.