Four-wheel drive system of electric wheel mining dump truck

Abstract

The invention belongs to the technical field of driving of electric wheel trucks, and discloses a four-wheel drive system of an electric wheel mining dump truck. The four-wheel drive system of the electric wheel mining dump truck comprises a power unit, a storage battery, a vehicle-mounted computer Ecu, a traction motor unit, a brake resistance box, a rectification unit, a drive control unit, a brake control unit, an excitation control unit and four motor control units, wherein the storage battery supplies power for the power unit, the vehicle-mounted computer Ecu and the drive control unit; the vehicle-mounted computer Ecu is connected with the power unit and the truck drive control unit sequentially; the excitation control unit is connected with the power unit; the power unit is sequentially connected with the brake control unit and the four motor control units through the rectification unit and the drive control unit; the brake control unit controls the brake resistance box to drive four traction motors through the four motor control units to drive four wheels respectively. By means of the four-wheel drive system of the electric wheel mining dump truck, power is diffused in a mode that the four wheels are driven independently, the multiple wheels bear the power, the total power and the traction torque of the motors are improved, and then the self rescue and adaptive capacity to environment are improved.

Description

technical field [0001] The invention relates to the technical field of electric-wheel vehicle drive, in particular to a four-wheel drive system of an electric-wheel mining dump truck. Background technique [0002] Traditional large mining dump trucks are designed with two axles and six wheels: the front axle is steered by two wheels, and the rear axle is driven by four wheels mechanically or electrically. The rear axle adopts a rigid axle structure, and the four rear wheels are divided into two groups and placed on both sides of the frame, and two motors are used to drive the two groups of rear wheels respectively, that is, the design method equivalent to two-wheel drive is adopted. [0003] The traditional mining dump truck is connected by two motor-driven rigid shaft structures. The rear axle of the vehicle is rigidly connected by an integral rigid axle. The wheels together with the axle are suspended under the frame through elastic suspensions. The frame carries The enti...

AI Technical Summary

Problems solved by technology

[0003] The traditional mining dump truck is connected by two motor-driven rigid shaft structures. The rear axle of the vehicle is rigidly connected by an integral rigid axle. The wheels together with the axle are suspended under the frame through elastic suspensions. The frame carries The entire load and the weight of the cargo box, therefore, the tire that has passed the obstacle will bear double the load, while the tire that is connected to it and has not passed the obstacle will bear almost zero load, and the load distribution of the other tire group It will also be affected; due to the narrow frame, the frame bears a very high moment from the side load, and the load on the outermost tire will increase significantly when turning; resulting in poor passability, low self-rescue and environmental adaptability, and then Reduced operational safety

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