Numerical control hydraulic transmission multi-axle steering system

A steering system and hydraulic technology, applied in steering mechanism, steering rod, fluid steering mechanism, etc., can solve the problems of driven steering lag, etc., achieve the effects of interference steering suppression, improvement of handling stability, and obvious effects

Inactive Publication Date: 2010-08-18
武汉枭龙汽车技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also easy to cause the driven steering hysteresis due to the deformation of the transmission parts

Method used

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  • Numerical control hydraulic transmission multi-axle steering system
  • Numerical control hydraulic transmission multi-axle steering system
  • Numerical control hydraulic transmission multi-axle steering system

Examples

Experimental program
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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and a specific implementation example.

[0013] The present embodiment is used for a type three-axle automobile, and Fig. 1 shows a schematic diagram of the front and rear wheel steering motions when the car turns. The middle axle of this car does not turn, and the front and rear wheels turn in opposite directions, and the size is proportional to each other, so that each wheel moves around the instantaneous center of motion O of the whole vehicle. The instantaneous motion center O is on the extension line of the 5 axis of the middle bridge. This results in pure rolling of the wheels, less tire wear and less running resistance, and a smaller minimum turning radius.

[0014] In Fig. 1: item number 1 is the front steering straight tie rod, one end of which is driven by the vertical arm of the front power steering machine, and the other end drives the right steering knuckle ...

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PUM

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Abstract

The invention discloses a multi-axle steering system for numerical control hydraulic transmission. The system comprises a driving steering axle and a driven steering axle. The system is characterized in that position sensors which are used for sensing the positions of pull rods of the driving steering axle and the driven steering axle are arranged on the driving steering axle and the driven steering axle respectively; the steering pull rod of the driven steering axle is provided with a steering oil cylinder; the position sensors sense the positions of the pull rods of the driving steering axle and the driven steering axle and transmits the positions to a control unit by an electrical signal; according to the positions of the pull rods of the driving steering axle and the driven steering axle, the kinematic velocity of the pull rod of the driving steering axle, and requirements of entire car steering, the control unit calculates the position where the pull rod of the driven steering axle needs to move, and controls an oil channel of the steering oil cylinder; and the pull rod of the driven steering axle is driven by a piston of the steering oil cylinder to make wheels drive in the required steering direction.

Description

technical field [0001] The present invention relates to an automobile steering system, in particular to a multi-axle steering system with numerical control hydraulic transmission. The steering of the driven steering axle is hydraulically driven. Background technique [0002] In order to improve maneuverability and reduce turning radius, modern multi-axle vehicles often adopt multi-axle steering system. The steering of the active steering axle (usually the first axle) of a multi-axle car is usually directly driven by the power steering gear. However, the steering movement of the driven steering axle is basically completed by mechanical transmission at present, with complex structure, difficult layout and low efficiency. Especially when the driven steering bridge is far away from the active steering bridge, the problem is more prominent. It is also easy to cause driven steering hysteresis due to deformation of transmission parts. Contents of the invention [0003] The pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D7/00B62D5/06B62D7/20
Inventor 柯德钧
Owner 武汉枭龙汽车技术有限公司
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