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Multi-oil-cylinder hydraulic system and axle steering device

A technology of steering device and hydraulic system, applied in the direction of fluid steering mechanism, etc., can solve the problems of inability to load the oil cylinder, large volume and length, and increased leakage, and achieve the effect of meeting the needs of safe driving of vehicles

Inactive Publication Date: 2021-04-06
HUNAN CRRC INTELLIGENT TRANSPORT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common failure form of oil cylinder is the failure of loading due to seal damage or increased leakage.
If the oil cylinder fails during the working process, the steering system of the vehicle will not work
However, multi-axle vehicles generally have multiple compartments, and the overall volume and length are relatively large, and there is no suitable trailer. If the steering system of the multi-axle vehicle fails to work, it is impossible to rescue through conventional rescue methods such as trailers.

Method used

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  • Multi-oil-cylinder hydraulic system and axle steering device
  • Multi-oil-cylinder hydraulic system and axle steering device
  • Multi-oil-cylinder hydraulic system and axle steering device

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Embodiment Construction

[0025] The following description is given to enable a person skilled in the art to make and use the invention and incorporate it into a specific application context. Various modifications, and various uses in different applications will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to a wide range of embodiments. Thus, the present invention is not limited to the embodiments given herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0026] In the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be apparent, however, to one skilled in the art that the practice of the present invention need not be limited to these specific details. In other words, well-known structures and devices are shown in block diagram form and not in detail in order to avoid obscuring th...

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Abstract

The invention provides a multi-oil-cylinder hydraulic system of an axle steering device and the axle steering device. The multi-oil-cylinder hydraulic system comprises a plurality of oil cylinders, a plurality of redundant valve sets corresponding to the oil cylinders and a main control valve; and liquid inlet cavities and liquid outlet cavities of the oil cylinders are communicated with an opening A or an opening B of the main control valve through the corresponding redundant valve sets respectively. And each redundant valve group is in a working state in response to hydraulic oil leakage of the corresponding oil cylinder, the redundant valve group in the working state disconnects the control association between the corresponding oil cylinder and the main control valve, and the main control valve only controls the working flow of the hydraulic oil of the oil cylinders corresponding to the plurality of redundant valve groups which are not in the working state.

Description

technical field [0001] The invention relates to the field of vehicle steering control, in particular to a multi-cylinder hydraulic system and an axle steering device comprising the multi-cylinder hydraulic system. Background technique [0002] figure 1 A schematic structural view of a conventional axle steering device is shown. A conventional hydraulic steering device may include a charging energy storage unit 110 , a proportional servo valve group 120 , an electronic control unit 130 and a hydraulic cylinder 140 . Wherein, two wheels on one axle are connected through a beam 150 on which an axle trapezoidal connecting rod 160 is installed. The cylinder body of the hydraulic oil cylinder 140 is installed on the beam of the axle, and the push rod 141 of the hydraulic oil cylinder is installed on the trapezoidal connecting rod 160 of the axle. A hydraulic oil tank and a charging pump station may be arranged in the charging energy storage unit 110 (not shown), for providing h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/30
CPCB62D5/30
Inventor 彭京尤旺任晓军刘川龙海泉刘小聪周胜黄松
Owner HUNAN CRRC INTELLIGENT TRANSPORT TECH CO LTD
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