Dump truck and its lifting system

Abstract

The invention provides a self-dumping vehicle and a lifting system thereof, wherein the lifting system comprises a hydraulic lifting device and a gas path control device; the hydraulic lifting device comprises a hydraulic oil cylinder and a lifting distribution valve; the gas path control device comprises a gas source, a gas path conversion valve, a shifting switch, a manual manipulation valve and a remote control electromagnetic valve; the gas path conversion valve is connected between the gas source and the lifting distribution valve; and a first gas path channel and a second gas path channel are set between the gas path conversion valve and the gas source; the shifting switch is connected to and is used to controlled the state of the gas path conversion valve, so as to control the gas source to be communicated with the lifting distribution valve selectively through the first path channel or the second gas path channel, thus further controlling the working state of the lifting distribution valve; the manual manipulation valve is used for changing the communicated state of the first gas path channel based on manual regulation; and the remote control electromagnetic valve is used for changing the communicated state of the second gas path channel based on the control signals of a remote controller. Through the lifting system, a compartment is controlled by the self-dumping vehicle to lift and drop through two modes that are manual operating mode and remote control mode.

Description

technical field [0001] The invention relates to the field of transport vehicles, in particular to a dump truck and its lifting system. Background technique [0002] At present, the lifting operation of the cabin of the dump truck is all completed by the manual control valve. The manual control valve is installed in the cab, and the driver realizes the lifting and falling action of the cabin by dialing the handle of the manual control valve to the lifting and lowering positions. Since the operator is operating in the cab, he can only observe the surrounding environment of the vehicle through the rear view mirror before the lifting operation, so the line of sight is greatly restricted and there are potential safety hazards. In addition, when the road surface is uneven and the working conditions in the mining area are relatively bad, due to the high accumulation of goods, the center of gravity is easy to shift when lifting and unloading, and the vehicle is prone to rollover acc...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the dump truck in the prior art can only manually control the lifting and falling of the compartment in the cab and there are potential safety hazards

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