Mechanical four-wheel steering system

Abstract

The invention relates to the technical field of vehicle engineering, in particular to a mechanical four-wheel steering system which comprises two hydraulic pump oil ways, and each hydraulic pump oil way is provided with a high-pressure oil tank, a valve set, a conveying oil way, a hydraulic pump and an oil return way which are sequentially connected; the hydraulic pump provides power needed by steering for the rear wheels, and the valve set controls connection and disconnection of an oil way of the hydraulic pump; an input steering structure and a fly ball structure, wherein the input steering structure is stressed to drive the valve group to work, the fly ball structure is meshed with an output shaft of a main speed reducer, and a conveying oil channel is blocked through a blocking piece trepanning structure. The output shaft of the main speed reducer drives the fly ball structure to rotate to generate centrifugal force to push the separation blade opening structure to change the connection state of each hydraulic oil way. The system has the beneficial effects that the front and rear wheels can rotate in opposite directions under low-speed driving and rotate in the same direction under high-speed driving, so that the maneuverability and flexibility of the vehicle under low-speed driving and the stability of the vehicle under high-speed driving are effectively improved.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a mechanical four-wheel steering system. Background technique [0002] With the progress of society and the development of science and technology, the number of private cars has increased rapidly, and the flood of cars in big cities has become a fact. The original streets and parking spaces have become more tense, resulting in the lack of parking spaces and lane congestion today. This puts forward high requirements on the flexibility of the car, not only to allow the driver to park in a narrow parking space conveniently, but also to facilitate the driver to turn around in the narrow lane while reducing the impact on traffic. [0003] In the face of the rapid increase in car ownership and complex urban working conditions, it is necessary to improve the flexibility of the car, and the main factor affecting the flexibility of the car is the turning radius. In order to re...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a mechanical four-wheel steering system to solve the problem that the intermediate transmission device of the traditional mechanical four-wheel steering system takes up too much space and the electronically controlled four-wheel steering system has too many electronic devices and many unstable factors. costly problem

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