Front axle steering method and steering system

A technology of steering system and front axle, which is applied in the direction of steering mechanism, steering rod, mechanical steering mechanism, etc. It can solve the problem that the response characteristics and impact resistance of the follow-up steering axle affect the vehicle's handling stability, safety, complex application environment, and environment. Harsh and other problems, to achieve the effect of stable and reliable system design, precise control and reasonable oil circuit

Active Publication Date: 2020-09-04
CHINA NORTH VEHICLE RES INST
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AI Technical Summary

Problems solved by technology

[0004] (2) Compared with engineering vehicles, wheeled vehicles have more complex working conditions and harsher environments. The response characteristics and impact resistance of the follow-up steering axle are common issues that affect vehicle handling stability and safety.
[0006] From the above comparison, the variable vehicle structure, complex application environment, and harsh service conditions of wheeled vehicles have brought great challenges to the reliable application of all-wheel steering technology on wheeled vehicles. The technical framework of the all-wheel steering system of engineering vehicles cannot meet the requirements of use. Therefore, it can simultaneously have the dynamic response and impact resistance of the follow-up steering axle in complex environments, and the median steering stiffness of the follow-up steering axle under nonlinear loads and The all-wheel steering system with the three core capabilities of the active return of the follow-up steering axle under the condition of system failure and vehicle damage will become a high-reliability all-wheel steering system suitable for wheeled vehicles

Method used

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  • Front axle steering method and steering system
  • Front axle steering method and steering system
  • Front axle steering method and steering system

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Embodiment Construction

[0076] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0077] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.

[0078]In order to solve the problems in the prior art, the present invention provides a high-reliability electromechanical hydraulic all-wheel steering system and its rear axle self-aligning and locking device, especially a 4X4 electromechanical hydraulic all-wheel steering system. The all-wheel steering device of the system adopts hydraulic power-assisted mechanical steering on the front axle, and the rear axle uses an electronically controlled hydraulic cylinder to drive the steering of the rear axle. As a preference, the high-reliability 4X4 electromechanical-hydraulic all-wheel steering system and its rear axle passive self-aligning and locking device are suitable for wheeled vehicles of more...

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Abstract

The invention provides a front axle steering method of a 4X4 electromechanical liquid all-wheel steering system. The method is characterized in that a driver turns a steering wheel, and a steering angle signal of the steering wheel is sent to a steering controller; and a control system makes a two-position two-way electromagnetic valve be powered off according to a ''front axle steering'' controlstrategy, and meanwhile makes a first connector P and a second connector T in a rear axle steering integrated valve set be unblocked so that an unlocking oil cylinder is unloaded, an unlocking springdrives a mechanical lock to complete locking and be in a locked state, and a rear axle is ensured to be located in the middle and does not participate in steering. The front axle steering method of the 4X4 electromechanical liquid all-wheel steering system has safe and reliable performance, safety and stability of the system are greatly improved, and a system design is stable and reliable.

Description

technical field [0001] The patent of the invention relates to a high-reliability electromechanical-hydraulic all-wheel steering system suitable for wheeled vehicles, which belongs to the fields of mechanical, hydraulic and motor vehicle applications. Background technique [0002] Wheeled equipment is an important part of the army's weapon equipment system, and it is an important land mobile platform for the land, sea and air forces to realize the development strategy of "global mobility, three-dimensional protection, multi-dimensional and multi-energy". Vehicle mobility, broadly speaking, refers to the ability to quickly reach space and regions, including tactical mobility and strategic / combat mobility. For wheeled vehicles, the improvement of mobility is more focused on improving soft ground and random off-road ground. Passing ability, plateau and mountain driving performance, air transport performance, etc. The essence of the wheeled vehicle steering system is based on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/06B62D5/02B62D5/04B62D5/30B62D6/00B62D7/14B62D7/20B62D113/00B62D137/00
CPCB62D5/02B62D5/04B62D5/06B62D5/30B62D6/001B62D7/142B62D7/20
Inventor 范婧王成玲李玉刘富强刘海涛张勇
Owner CHINA NORTH VEHICLE RES INST
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