What are Dump Trucks?

Dump truck is a vehicle that unloads cargo by hydraulic or mechanical lifting. Also known as a dump truck. It is composed of automobile chassis, hydraulic lifting mechanism, cargo compartment and power take-off device.

Dump trucks are often used in civil engineering

The structure of the dump truck's engine, chassis and cab is the same as that of a general truck.

The high-pressure oil enters the lifting hydraulic cylinder through the distribution valve and the oil pipe, and there is a cab safety protection plate at the front end of the cabin.

The engine drives a hydraulic pump through a transmission and a power take-off device. The cabin hydraulic tipping mechanism is composed of an oil tank, a hydraulic pump, a distribution valve, a lifting hydraulic cylinder, a control valve, and an oil pipe.

The engine drives a hydraulic pump through a transmission and a power take-off device. High-pressure oil enters the lifting hydraulic cylinder through the distribution valve and the oil pipe, and pushes the piston rod to tip the cabin. Lateral tipping is more common, and the control of the piston rod movement through the operating system can stop the car in any desired tilt position. The carriage is reset by its own gravity and hydraulic control.

Because the loading compartment can automatically tip over to unload at a certain angle, it greatly saves unloading time and labor, shortens the transportation cycle, improves production efficiency, and reduces transportation costs. It is a commonly used transportation

1. New dump trucks or overhauled vehicles must be commissioned to make the car lifting process smooth and free of movement.

2. When using, all parts should be properly selected according to the regulations, which greatly saves the unloading time and labor, and the lifting mechanism strictly changes the oil on schedule.

3. Ship according to the rated load. Overload is strictly prohibited.

1. Do not suddenly push the lifting handle to the "lowering position" in the middle of full-load lifting.

If this operation error occurs, the carriage suddenly rushes down, which will bring a lot of impact to the frame and even an accident. Therefore, the above operations should be avoided as much as possible, and if there are special circumstances, they must be carefully operated, and the landing speed should be slowed down as much as possible, and you must not suddenly drop the carriage to the end.

2. Don't use junk car-junk brake to unload.

Due to the large inertial force of the car (usually 5 to 20 times the rated lifting force), it is easy to cause damage to the permanent deformation of the frame, welding of the compartment and sub-frame, burning of the oil pump or damage to the seal ring, and damage to the hydraulic cylinder. , The service life of the vehicle is reduced, and in serious cases, a rollover accident may occur. Therefore, generally, dump trucks are forbidden to drive during lifting.

3. After unloading the dump truck, the power take-off must be disengaged before the vehicle is viable.

If this operation error occurs, when the dump truck is running, the lift pump is running at high speed for a long time without load because the power take-off is in the "engaged" position. As a result, the temperature of the hydraulic oil rises rapidly, which can easily cause damage to the oil seal of the oil pump, or even cause the oil pump to "burn out". What's more serious is that the operation of the oil pump means that the hydraulic system has a power source, and it is easy for the cabin to automatically rise during driving Accident.

4. The power take-off cannot be in the "on" position when driving.

If it is in the "on" state (the red light is on), the oil pump will continue to rotate and the hydraulic system will have a power source. This will cause the car to automatically lift due to misoperation on the pneumatic control valve. Even if the control valve is in the "down" position, the oil must enter the oil pump, which will cause the oil pump to burn out.