Electric drive dump truck

Abstract

The invention relates to an electric drive dump truck. The dump truck comprises a body, a carriage and a carriage driving system, wherein the carriage driving system comprises an oil hydraulic cylinder assembly and a drive device; the drive device comprises an oil pump, an oil station and a motor which are integrated in an integrated valve block; and the oil pump is located in the oil station. In the invention, a power transfer system of an engine and a self-discharge driving system are independent from each other, and the self-discharge driving system is integrated into a whole, thus a good transmission effect is realized, the drive energy is saved, the structure of the device is more compact, the adverse effect generated among the components is avoided, the self-discharge process is relatively stable, the generality is relatively high, the drive energy is clean, and the possibility of leakage at a sealing point of the oil pump is eliminated so that the oil pump can realize better lubrication and heat dissipation; and meanwhile, since mechanical moving components are sealed in the oil station, the influence of external environment such as dust, moisture and the like is avoided, the reliability is high, and the service life is prolonged.

Description

technical field [0001] The invention relates to an engineering or freight vehicle, in particular to an electric-driven self-unloading dump truck. Background technique [0002] A dump truck is a vehicle that unloads goods by itself by hydraulic or mechanical lift. It is composed of automobile chassis, hydraulic lifting mechanism, cargo compartment and power take-off device. [0003] The dump trucks of the prior art generally add a power take-off device to the engine or transmission system, which drives the oil pump to form high-pressure oil, and the high-pressure oil enters the lifting hydraulic cylinder through the distribution valve and oil pipe; The system is closely integrated, the structure of the motor vehicle dump mechanism is complex, and the mechanical moving parts are easily affected by the external environment such as dust and water vapor, and the reliability is low; The vehicle is highly dependent and has no versatility; the mechanical transmission from the engi...

AI Technical Summary

Problems solved by technology

[0003] The dump trucks of the prior art generally add a power take-off device on the engine or transmission system to drive the oil pump to form high-pressure oil, and the high-pressure oil enters the lifting hydraulic cylinder through the distribution valve and the oil pipe; The system is closely integrated, the structure of the dump mechanism of the motor vehicle is complex, and the mechanical moving parts are easily affected by external environments such as dust and water vapor, and the reliability is low; problems with the tipping mechanism of the dump truck may directly affect the operation of the whole vehicle, and the dump drive system has a great impact on the original The dependence on the car is high and not universal; the mechanical transmission from the engine has the disadvantage of instability due to the connection structure and the operating characteristics of the engine itself, which makes the unloading process of the dump truck unstable; and, in the process of vehicle unloading In the process, due to the operation of the engine, there will be greater noise, exhaust pollution and higher energy consumption

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