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Scope of application Dump trucks are often used in civil engineering work in conjunction with construction machinery such as excavators, loaders, and belt conveyors to form assembly, transportation, and unloading production lines for the loading, unloading and transportation of earth, sand, and bulk materials.
Working principle The structure of the engine, chassis and cab of the dump truck is the same as that of a general truck. The dump trucks are divided into two types: tipping and lateral tilting. Through the control of the piston rod, the rearward tilting is more common, and the piston rods are tilted to make the carriage tilt, with a few bidirectional tilting. The high-pressure oil enters the lift cylinder through the distribution valve and tubing, and the cabin safety shield is at the front of the cabin. The engine drives the hydraulic pump through the transmission and power take-off device. The hydraulic tilting mechanism of the compartment consists of a fuel tank, a hydraulic pump, a distribution valve, a lifting hydraulic cylinder, a control valve and a fuel pipe. The hydraulic tilting mechanism of the compartment consists of a fuel tank, a hydraulic pump, a distribution valve, a lift cylinder, a control valve, and a tubing. The engine drives the hydraulic pump through the transmission and power take-off device. The high-pressure oil enters the lifting cylinder through the distribution valve and the oil pipe, and pushes the piston rod to tilt the carriage. Tipping is more common in the future. Controlling the movement of the piston rod through the control system can stop the car at any desired tilt position. The carriage is reset using its own gravity and hydraulic control.
Category 1. Classified by brand: Dongfeng Dump Truck, Liberation Dump Truck, Auman Dump Truck, Heavy Duty Truck Steyr Dump Truck, Hongyan Dump Truck, Heavy Truck Ace Tip Dump Truck, Shaanxi Auto Dump Truck 2 According to the shape classification: Single Bridge Dump Truck, Double Bridge Dump Truck, Flat Head Dump Truck, Tip Tip Dump Truck, Front Dump Back Dump Truck, Double Bridge Semitrailer Dump Truck, Three Bridge Semitrailer Dump Truck 3. According to the species classification: Cassidy Dump Truck, Dolika Dump Truck, 140 Dump Truck, 145 Dump Truck, 153 Dump Truck, 1208 Dump Truck, Xiaojingang Dump Truck, Dajinggang Dump Truck 4. Classified according to the link form of lift cylinder and carriage: Direct push type tilt mechanism; link type tilt mechanism. 5. Classified by purpose: Agricultural Dump Trucks, Mining Dump Trucks, Waste Dump Trucks, Coal Transport Dump Trucks, Construction Machinery Dump Truck, Sludge Dump Truck 6, according to the different drive mode is also divided into 6x4, 8x4 to unload and semi-trailer dump truck. 7, according to the different uses are also divided into mining dump truck, used to transport coal, sand and gravel; sanitation green dump truck, used to transport garbage. 8, according to the direction of turning the car there are front-loading and side dump truck. There are also bidirectional dump trucks, which are mainly used in construction projects. At present, domestic manufacturers of dump trucks are well-known as China National Heavy Duty Truck Jining Commercial Vehicle Co., Ltd., Zhongtong Group Zhongtong Special Vehicle Co., Ltd., China National Heavy Duty Truck Group Hubei Huawei Special Purpose Vehicle Co., Ltd., and Shaanxi Heavy Vehicle Co., Ltd.
Advantages Because the loading compartments can automatically tip and discharge at certain angles, which greatly saves the time and labor for unloading, shortens the transportation cycle, increases the production efficiency, and reduces the transportation costs. It is a common transportation vehicle.
Maintenance Tips New dump trucks or overhauled cars must be commissioned so that the car lifts smoothly and smoothly. When using, all parts should be properly selected according to the provisions of lubricating oil, which greatly saves the unloading time and labor, lifting agencies strictly on schedule oil exchange. Loaded according to rated load, no overloading is allowed.
Procedure 1. Do not suddenly push the lift handle to the “down position†midway through the full load lift. If this operation fails, the car suddenly rushes down, which will bring a lot of impact to the frame and even accidents. Therefore, you should try to avoid the above operation, if you have special circumstances need to be careful, slow down the landing as much as possible, you must not suddenly stop the car to the end. 2, can not use the car to pull - hard brake unloading. Because the inertia of the vehicle is very high (usually 5 to 20 times of the rated lifting force), it is very easy to cause permanent deformation of the frame, car and frame welding, oil pump damage, damage to the hydraulic cylinder, and damage to the hydraulic cylinder. The service life of the vehicle is reduced, and in serious cases, a rollover accident may also occur. Therefore, general dump trucks are prohibited from driving when lifted. 3. After the dump truck has unloaded the cargo, it must be removed from the power taker before it is feasible. If this operation error occurs, when the dump truck is running, since the power take-off is in the “engaged†position, the lift pump will run for a long time without load under the “small cycle†state. As a result, the temperature of the hydraulic oil rises rapidly, which can easily cause damage to the oil seal of the oil pump and even cause the phenomenon of “burning†of the oil pump. What is more serious is that the operation of the oil pump means that the hydraulic system has a power source, and the carriage automatically rises during the driving process. Accident. 4. The power take-off can't be in the "ON" position while driving. If in the "on" state (red light), the oil pump will continue to rotate, the hydraulic system will have a power source, so that due to the misoperation on the pneumatic control valve caused by the automatic lifting of the compartment; Even if the valve is in the "down" position, the oil will enter the pump, which will burn the pump. [1]
1.Make process card and quality plan
2.Choose the qualified raw material and do incoming test, not allowed
nonconforming material to enter into production process;
3.Producing and testing followed the quality documents
4.Be good at Quality records and product identification to ensure the product
traceability
5.Do the final inspection to ensure 100% of pass.
Dump Truck
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