Rear axle steering valve group, axle steering centering hydraulic control system and vehicle

A technology of hydraulic control system and steering valve, which is applied in steering control, steering mechanism, vehicle parts, etc., and can solve problems such as poor safety

Active Publication Date: 2015-04-29
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a rear axle steering valve group, an axle steering centering hydraulic control system, and a vehicle, so as to solve the problem of poor safety in the centering process of the wheels of a running vehicle in the prior art

Method used

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  • Rear axle steering valve group, axle steering centering hydraulic control system and vehicle
  • Rear axle steering valve group, axle steering centering hydraulic control system and vehicle
  • Rear axle steering valve group, axle steering centering hydraulic control system and vehicle

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Embodiment Construction

[0030] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] Such as Figures 1 to 6 As shown, according to the embodiment of the present invention, the rear axle steering valve group includes a hydraulically controlled proportional throttle valve 131, and the hydraulically controlled proportional throttle valve 131 is arranged between the oil source and the first actuator, and the hydraulically controlled proportional throttle valve 131 There is a throttle control port for controlling the opening of the hydraulic control proportional throttle valve 131, the throttle control port is connected to the control oil source, the flow rate of the control oil source increases with the increase of the wheel speed, the hydraulic control proportional throttle valv...

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PUM

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Abstract

The invention provides a rear axle steering valve group, an axle steering centering hydraulic control system and a vehicle. The rear axle steering valve group comprises a hydraulic control proportional throttle valve, wherein the hydraulic control proportional throttle valve is arranged between an oil source and a first executing mechanism, the hydraulic control proportional throttle valve is provided with a throttle control port which is used for controlling the opening of the hydraulic control proportional throttle valve, the throttle control port is connected with the control oil source, the flow of the control oil source increases along with the increase of the wheel speed, and the opening of the hydraulic control proportional throttle valve is reduced along with the increase of the flow of the control oil source. By adopting the rear axle steering valve group, the running speed of the first executing mechanism can be controlled.

Description

technical field [0001] The invention relates to a vehicle steering control system, in particular to a rear axle steering valve group, an axle steering centering hydraulic control system and a vehicle. Background technique [0002] For wheeled engineering vehicles that use hydraulic centering cylinders for axle neutral locking, the requirements for the centering hydraulic control system tend to be stricter: on the one hand, it is necessary to ensure the stability of the axle center locking after the centering cylinder is completed; On the other hand, it is also necessary to ensure that during the process of centering the oil cylinder, the steering performance of the vehicle is good and the safety is not weakened. [0003] Currently, the axle neutral locking system applied to wheeled construction vehicles is controlled by the centering control valve to control the centering oil cylinder to complete the center locking of the axle. [0004] The main components of the system are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02B62D1/00
CPCB62D1/00F15B13/02
Inventor 胡国庆郭堃
Owner ZOOMLION HEAVY IND CO LTD
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