Auxiliary lifting system of dump truck

Abstract

The invention provides an auxiliary lifting system of a dump truck. The auxiliary lifting system is connected with a main lifting system in parallel. The auxiliary lifting system comprises an oil-inlet one-way valve, an oil-outlet one-way valve, an electric oil pump, a lifting oil cylinder, a controller, a control switch, and a packing box displacement sensor. When the control switch is started, the controller controls the electric oil pump to start pressurizing; the lifting oil cylinder extends and pushes a packing box of the dump truck to start lifting; when the packing box displacement sensor detects that the lifting height achieves a preset height value, the electric oil pump stops pressurizing; and after a closing command from the control switch is received, the electric oil pump starts releasing pressure, the lifting oil cylinder is contracted, the packing box of the dump truck falls, and when the packing box displacement sensor detects that the falling height of the packing box achieves a preset value, the electric oil pump stops releasing pressure. According to the auxiliary lifting system disclosed by the invention, the lifting and the falling of the packing box can be controlled through the control switch when the situation that the dump truck needs refueling is detected, so that a driver completes a refueling process smoothly; and the auxiliary lifting device can also be automatically lifted when the packing box of the dump truck lifts, so that a second packing box anti-falling support is formed based on an original packing box anti-falling support of the dump truck, and when a chassis of the dump truck is maintained, the safety is improved.

Description

technical field [0001] The invention belongs to the field of loading and unloading, refueling and control of dump trucks, and in particular relates to an auxiliary lifting system for dump trucks. Background technique [0002] A car with a compartment equipped with an automatic tipping device. Also known as dump trucks and engineering vehicles, it consists of a car chassis, a hydraulic lifting mechanism, a power take-off device and a cargo compartment. In civil engineering, it is often combined with excavators, loaders, and belt conveyors to form a loading, transporting, and unloading production line for loading and unloading of earthwork, sand, and loose materials. 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, reduces transportation costs, and indicates the loading volume. It is a commonly used transportation machine. [0...

AI Technical Summary

Problems solved by technology

But in reality, many drivers often find that they forgot to lift the cargo compartment up when they need to open the fuel tank cap for refueling, and need to return to the cab to start the vehicle and then lift the cargo compartment again

Images