What are the operating procedures for dump trucks?

1. Do not suddenly push the lifting handle to the "lowering position" during full-load lifting. If this operation error occurs and the car suddenly rushes down, it will bring great impact to the frame and even cause an accident. Therefore, the above operations should be avoided as much as possible. If necessary, you must also operate with caution, slow down the landing speed as much as possible, and be careful not to suddenly drop the car to the bottom.
2. Do not use sudden lifting or sudden braking to unload cargo. Due to the large inertial force of the vehicle being lifted violently (generally 5 to 20 times the rated lifting force), it can easily cause permanent deformation of the vehicle frame, open welding of the carriage and sub-frame, burning of the oil pump, damage to the sealing ring, damage to the hydraulic cylinder, etc. , the service life of the vehicle is reduced, and in severe cases, rollover accidents may occur. Therefore, it is generally forbidden for dump trucks to drive when lifted.
3. After unloading the cargo, the dump truck must disengage the power take-off before it can drive. If this operation error occurs, when the dump truck is driving, because the power take-off is in the "engaged" position, the lift oil pump will run at high speed and without load for a long time in the "small circulation" state. As a result, the temperature of the hydraulic oil rises rapidly, which can easily cause damage to the oil pump oil seal, and 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 the cabin is prone to automatically lift during driving. accident.
4. The power take-off cannot be in the "on" position while 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, which will cause the car to automatically lift due to misoperation on the pneumatic control valve; at this time, the pneumatic Even if the control distribution valve is in the "down" position, oil will enter the oil pump, which will cause the oil pump to burn out.