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Electrohydraulic control steering system

A steering system and fluid circuit control technology, which is applied to steering mechanisms, steering rods, fluid steering mechanisms, etc., can solve problems such as untimely response, delayed operation, and inaccurate steering control

Active Publication Date: 2019-03-15
CHINA RAILWAY CONSTR HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Human-controlled steering, due to various human reasons, such as fatigue driving, drunk driving, etc., there will be a certain reaction time for people to control the vehicle, so the operation will be delayed, resulting in inaccurate steering control
At the same time, human-controlled vehicle operation, in the face of some special situations, the response is not timely and the safety is low

Method used

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  • Electrohydraulic control steering system
  • Electrohydraulic control steering system
  • Electrohydraulic control steering system

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Embodiment Construction

[0021] The present invention is introduced below by accompanying drawing.

[0022] figure 1 A schematic diagram of an electrohydraulic controlled steering system according to the invention is shown. The steering system includes a hydraulic circuit control device 100, and the hydraulic circuit control device 100 realizes automatic control of vehicle steering through hydraulic control. Such as figure 1 As shown, the hydraulic circuit control device 100 includes a hydraulic pump 1 , and the hydraulic pump 1 is used to draw hydraulic oil from an oil tank to supply the oil circuit of the hydraulic circuit control device 100 . The hydraulic control device 100 also includes a hydraulic steering gear 4, and the hydraulic pump 1 is connected to the hydraulic steering gear 4 through an oil pipeline. A switching valve 3 is provided between the hydraulic pump 1 and the hydraulic steering gear 4, and the switching valve 3 is used to switch working modes to select manual control or autom...

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Abstract

The invention provides an electrohydraulic control steering system, which comprises a liquid path control device, wherein the liquid path control device comprises a hydraulic pump for providing hydraulic oil; a rear axle steering oil cylinder for controlling the rear wheel of the vehicle to steer and a front axle steering oil cylinder for controlling the front wheel of the vehicle to steer; an electric proportion reversing valve, wherein the electric proportion reversing valve is used for controlling hydraulic oil to flow to the rear axle steering oil cylinder or the front axle steering oil cylinder; a switching valve; and an angle measuring device, wherein the angle measuring device comprises an angle sensor for measuring a steering angle of a wheel and the angle sensor is fixedly connected to a rear axle and / or a front axle of the vehicle. The angle measuring device measures an actual steering angle of the wheel through the angle sensor, and the electric proportional reversing valvecontrols the flow direction of hydraulic oil according to the relationship between the actual steering angle of the wheel and a target steering angle so as to control the movement of the rear axle steering oil cylinder and the front axle steering oil cylinder, thereby the automatic control of wheel steering is realized.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to an electro-hydraulic control steering system. Background technique [0002] In order to adapt to the development of intelligent process and meet people's demand for intelligent products, the steering system of vehicles is gradually realizing intelligent automation. [0003] In the conventional steering system, the steering control of the vehicle is mainly realized through the hydraulic steering gear, specifically through manual adjustment of the steering wheel, and the traditional steering system utilizes mechanical transmission components. Human-controlled steering, due to various human reasons, such as fatigue driving, drunk driving, etc., there will be a certain reaction time for people to control the vehicle, so the operation will be delayed, resulting in inaccurate steering control. At the same time, human-controlled vehicle operation, in the face of some special...

Claims

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Application Information

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IPC IPC(8): B62D6/00B62D5/06B62D113/00
CPCB62D5/06B62D6/00
Inventor 刘飞香郑大桥刘伟伍涛黎鑫溢陈竹秦念稳曾庆峰胡树伟赵忠杰李永丰王李王华明
Owner CHINA RAILWAY CONSTR HEAVY IND
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