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06-22

Safe Operation Technology of Backhoe Loader

1. Before excavating the backhoe loader, fix the mouth and outrigger of the loading bucket with the ground, keep the front and rear wheels slightly off the ground, and keep the level of the fuselage to improve the stability of the machine. Before digging, turn the loading bucket over so that the bucket mouth faces the ground and the front wheel is slightly off the ground. Step on and lock the brake pedal, and then extend the outrigger to keep the rear wheel off the ground and maintain a horizontal position. 2. If the boom is suddenly braked during the descent, the impact force caused by its inertia will damage the excavating device, and can damage the stability of the machine and cause a tipping accident. During operation, the control handle should be stable and not move sharply; when the boom is lowered, it must not be braked halfway. Do not use high gear when digging. The rotation should be stable, not to hit and be used to smash the side of the groove. The buffer block at the rear end of the boom should be kept intact; if it is damaged, it should be repaired before use. When shifting, the excavating device should be placed in the intermediate transportation state, the outriggers should be retracted, and the lifting arm should be lifted. To 3. Before loading operations, the slewing mechanism of the excavator should be placed in the middle position and fixed with a pull plate. During the loading process, a low gear should be used. The floating position of the valve should not be used when the bucket lift arm is lifting. The distribution valves of the hydraulic control system are divided into the front four valves and the rear four valves. The first four valves control the outriggers, lifting arms and loading buckets, etc., which are used for outrigger extension and loading operations; the rear four valves operate the bucket, swing and move Arms and bucket handles, etc., are used for turning and excavating operations. The power performance of the machinery and the capacity of the hydraulic system do not allow and cannot simultaneously carry out loading and excavation operations. 4. When the first four valves are working, the last four valves must not work at the same time. During driving or operation, it is strictly forbidden to ride or stand on any part of the backhoe loader except outside the cab. 5. Generally, the backhoe loader uses a wheeled tractor as the main engine, and the front and rear are equipped with loading and digging devices to increase the length and weight of the machine. Therefore, avoid high speed or sharp turns during driving to prevent accidents. Do not slide in neutral when going downhill. When the hydraulic piston rods of the bucket and the bucket handle are kept in the fully extended position, the bucket can be moved closer to the boom, and the excavating device is in the shortest state, which is conducive to driving. When driving, the outriggers should be fully retracted, the digging device should be firmly fixed, the loading device should be lowered, and the bucket and handle hydraulic piston rod should be kept in fully extended position. 6. After the wheeled tractor is converted into a backhoe loader, the weight has increased a lot. In order to reduce the damage of the tire under heavy load, the rear wheel should be off the ground when parking. When the parking time exceeds, the outriggers should be raised to keep the rear wheels off the ground; when the parking time exceeds, the rear wheels should be off the ground, and the rear suspension should be supported by cushion blocks
06-22

Introduction to the functions of Quangong WZ30-25 backhoe loader

Quangong WZ30-25 backhoe loader is one of the most representative products of Quangong Machinery, and it is also a very widely used backhoe loader in construction machinery. So what are the characteristics and advantages of this backhoe loader? Now, let’s give you a specific introduction: First, the humanized design is carried out in each part of the machine. The layout of each operating handle is designed according to ergonomics. The steering wheel, seat and instrument panel can be adjusted by the operator according to their needs. More relaxed and comfortable during operation; Second, the brake of this model of backhoe loader has the function of two-in-one parking brake. It adopts an air valve to control the shoe-type emergency brake system. When the brake air circuit fails, the machine can automatically take emergency braking. This greatly guarantees operational safety; 　　Third, the full-work WZ30-25 backhoe loader uses a low-noise, high-performance Yuchai engine with low emissions, environmental protection and energy saving; 　　Fourth, the unique central excavating device and spread-wing outriggers are very suitable for rock crushing and deep excavation, and for the first time, hydraulic proportional pilot control can be used for accurate positioning during work. The work process is easy and convenient and can ensure efficiency; Fifth, some optimizations and improvements have been made in the loading part. A limit function has been added to the operating position, which effectively prevents the material from being scattered, and the bucket can be automatically leveled when unloading materials, without manual adjustment, which greatly increases work efficiency And intensity; 　　 Sixth, the design of the rear axle device of the body can swing up and down around the center, so that the tires have good adhesion and the machine can perform well in cross-country and obstacle passing; 　　 Seventh, the operating room seat has a luxurious vision and a comfortable environment. It is equipped with more than ten kinds of machines and functions. 　　 In short, this is definitely an advanced mechanical equipment that integrates function, comfort and design.
06-22

Features and advantages of side-shift backhoe loader

As the technology becomes more and more advanced, the design of backhoe loader is also undergoing changes, from the original ordinary backhoe loader to the extended boom backhoe loader, to the latest side-shift backhoe loader, I believe Our machinery and equipment industry will develop more and more mature. The following is an introduction to the characteristics and advantages of the side-shift backhoe loader: the transmission system of the side-shift backhoe loader adopts the most advanced configuration in the world, and the four-speed synchronization is available with voltage control; the braking system adopts the internal wet brake and can be self-controlled Adjustment and maintenance-free; the engine is equipped with the most advanced powerful supercharged engine, which greatly solves the restrictions of ordinary backhoe loaders operating in plateau areas; colleagues, the hydraulic components have also been relatively upgraded to improve its reliability; this The loading device of the backhoe loader with side shift function adopts single handle control, the boom can float up and down to control the height, the bucket lifting can also be automatically adjusted and stabilized, and the operation is convenient and trouble-free. This kind of machine is very suitable for working in relatively small areas and has great advantages in handling materials, digging ditches, etc. Of course, one thing that cannot be ignored is whether the operator's operating room is comfortable or not. The operating room of this excavator has an air-conditioning system and a wide view. The whole design is very user-friendly, and the operator will feel very comfortable and relaxed at work. Compared with the traditional backhoe loader, the side-shift backhoe loader is more stable in driving. During the operation, due to its side shift function, the working range is increased, and the operator does not need to frequently adjust the vehicle position, which is convenient and improves the work Efficiency is a very good new type of backhoe loader.
06-22

Several matters needing attention on the safety of loader operation

With the acceleration of economic development and urban construction, more and more large-scale engineering constructions have gradually begun. Because the loader is a large construction machine, it will be accompanied by various dangers in the operation engineering. However, each construction unit adheres to the principles of people-oriented and safety first and should try to avoid possible dangers during the construction process. So, what are the precautions during the operation of the backhoe loader? 　　First of all, the operator must carefully study the equipment operation specifications and instructions before operating the equipment, and must strictly follow the specifications during the operation to avoid accidents due to improper operation; 　　Secondly, necessary safety measures must be taken for wearing and operation, such as wearing a helmet, wearing a seat belt, etc.; 　　 Third, when the excavator is working on the construction site, it is strictly forbidden for unrelated personnel to enter the site; fourth, when the loader has a problem and needs to be overhauled, brake and stop first, and cut off the power before proceeding; 　　Finally, during the maintenance period, if the bucket arm needs to be raised, be sure to fix the position to make sure the bucket will not slide before starting the inspection. 　　 Hope that every operator can complete the work in a standardized and safe manner.
06-22

Excavator operating skills sharing

The masters who drive excavators all know that various problems will occur during the construction process. If there is a problem with the equipment, not only will it affect the construction progress, but the maintenance of the machine will also shorten the service life of the machine. Here are some excavator operating skills summarized by the old excavator drivers for a long time, and I hope it will be helpful to everyone. 　　 1. In order to increase the stability of the excavator, please make sure that the track is in full contact with the ground; 　　2, the direction of the track must be confirmed during operation to avoid rollover; 　　3. Before operating on the cab, you should roughly observe the surrounding terrain and environment, and be aware of obstacles when the excavator is rotating; 　　4. Avoid facing the final drive in the direction of excavation, otherwise the hose and walking motor may be damaged; There are also several experience summaries: When the bucket is at a 30-degree angle to the ground, the resistance generated by digging is the least and the least labor-saving; the angle of the stick is between the front 45 degrees and the rear 30 degrees, and the bucket and the ground are used at the same time. The arm lifting efficiency is the highest; when the bucket cylinder and the connecting rod, the stick cylinder and the stick are at a right angle, the digging force can reach the maximum. This is only the experience summed up by some experienced excavator drivers. Most of the operating skills need to be summarized by the driver himself during the operation.
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