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Hydraulic power steering system for dump truck

A technology of steering system and hydraulic power, which is applied in the field of steering system to achieve the effects of simplifying mechanical mechanism, improving ride comfort and reducing unsprung mass

Inactive Publication Date: 2020-02-18
GUANGZHOU ELECTRICAL LOCOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a dump truck hydraulic power steering system to solve many problems caused by the steering tie rod in the original hydraulic power steering system

Method used

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  • Hydraulic power steering system for dump truck
  • Hydraulic power steering system for dump truck
  • Hydraulic power steering system for dump truck

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Experimental program
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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0031] Such as figure 1 As shown, a dump truck hydraulic power steering system includes a left steering mechanism and a right steering mechanism, the left steering mechanism includes a left steering power cylinder 1, a left kingpin 2 and a left steering knuckle arm 3; the right steering mechanism includes Right steering power cylinder 4, right kingpin 5 and right steering knuckle arm 6. According to the angle position of the steering wheel, the steering gear outputs a corresponding volume of hydraulic oil by controlling the opening time of the valve. After being amplified by the flow amplifier, it enters the corresponding steering power cylinder; the hydraulic oil input into the steering power cylinder pushes the piston to move and passes through the steering The piston rod pushes the steering knuckle arm to rotate around the kingpin, thereby drivi...

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Abstract

The invention relates to a hydraulic power steering system for a dump truck. The hydraulic power steering system includes a left steering power cylinder for controlling a left wheel rotating angle anda right steering power cylinder for controlling a right wheel rotating angle. A control method of the steering system includes the following steps that (1) a steering wheel rotating angle sensor collects a steering wheel rotating angle signal; (2) the left and right wheel rotating angles meeting the Ackerman steering geometrical relationship under different steering wheel rotating angles are calculated; (3) displacement of piston rods in the left and right steering power cylinders is calculated according to the kinematic relationship between steering mechanism rod pieces; and (4) according tothe cross-sectional areas of the steering power cylinders and the piston rods, the hydraulic oil flow needing to be output to the left and right steering power cylinders by the steering hydraulic system are determined. A steering tie rod is cancelled, obstruction between front suspensions and under a frame does not exist any more, and the vehicle trafficability characteristic is improved.

Description

technical field [0001] The invention relates to a steering system, in particular to a dump truck hydraulic power steering system. Background technique [0002] The structure of the existing dump truck hydraulic power steering system includes left (right) steering cylinder, left (right) steering knuckle, left (right) steering knuckle arm, steering tie rod and other components. When turning right, the high-pressure oil enters the rodless chamber of the left steering cylinder and the rod chamber of the right steering cylinder; when turning left, the high-pressure oil enters the rod chamber of the left steering cylinder and the rodless chamber of the right steering cylinder, and the steering cylinder Driven by the oil, the wheels turn. When driving in a straight line, the oil pressures in the two chambers of the steering cylinder are equal. [0003] The steering knuckle arms, steering tie rods and frame on both sides constitute a four-bar linkage mechanism, so that the turning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/06B62D5/12
CPCB62D5/06B62D5/12
Inventor 王卓周林羽罗朋黄俊阁郭骏来艳胡潇睿左曙光田振华
Owner GUANGZHOU ELECTRICAL LOCOMOTIVE
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