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Four-wheel steering system of vehicle and control method thereof

A four-wheel steering and vehicle technology, applied in hydraulic steering gear and other directions, can solve problems such as poor maneuverability and inconvenient steering, and achieve the effects of improving low-speed maneuverability, convenient steering adjustment, and reducing turning radius

Pending Publication Date: 2020-01-03
YANGZHOU JINWEI ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a vehicle four-wheel steering system and its control method, which solves the technical problems of inconvenient steering and poor maneuverability of large vehicles in the prior art

Method used

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  • Four-wheel steering system of vehicle and control method thereof

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Effect test

Embodiment 1

[0034] Such as figure 1As shown, a vehicle four-wheel steering system provided in this embodiment can realize the steering of the front wheels of the wheels, and it includes a fuel tank 1, a hydraulic pump 2, a first relief valve 3, a steering gear 4, and a front axle cylinder 5 and the front axle drag cylinder 6, the steering machine 4 includes a first steering oil inlet 401, a first steering oil outlet 402, a second steering oil outlet 403, a second steering oil inlet 404, and a hydraulic oil inlet 405 and the hydraulic oil return port 406, and two independent pipelines are arranged inside the steering gear, and the front axle cylinder 5 is independent from one of the steering gear 4 through the first steering oil inlet 401 and the first steering oil outlet 402 Pipeline communication, the front axle drag cylinder 6 communicates with another pipeline inside the steering gear 4 through the second steering oil outlet 403 and the second steering oil inlet 404, the steering gear ...

Embodiment 2

[0043] The present invention also discloses a control method for a four-wheel steering system of a vehicle. The four-wheel steering system in Embodiment 1 is used to control the vehicle to perform front-wheel steering / four-wheel steering / crab steering, and the four-wheel steering system in this embodiment The conversion of the two modes of steering and crab steering is realized through the reversing valve 7 .

[0044] Wherein, when the vehicle is turning the front wheels, the hydraulic pump 2 pumps the hydraulic oil from the oil tank 1 and sends it into the steering gear 4, and a part of the hydraulic oil enters a pipeline in the steering gear 4 to control The front axle working cylinder 5 expands and contracts, so as to realize the left front rotation of the vehicle. At this time, this part of the hydraulic oil needs to pass through the first steering oil inlet 401 and the first steering oil outlet 402; the other part enters the remaining oil in the steering gear 4 In one of ...

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Abstract

The invention discloses a four-wheel steering system of a vehicle and a control method thereof. The four-wheel steering system of the vehicle comprises a fuel tank, a hydraulic pump, a first overflowvalve, a steering engine, a front axle working cylinder, a front axle towing cylinder and a rear axle control circuit. According to the control method, each part workpiece of the four-wheel steering system of the vehicle acts so that the vehicle finishes front wheel steering / four wheel steering / crab type steering motions. According to the four-wheel steering system of the vehicle and the control method thereof, technical problems of inconvenient steering and poor mobility of an oversize vehicle in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of vehicle steering, in particular to a vehicle four-wheel steering system and a control method thereof. Background technique [0002] With the rapid development of modern society and the improvement of people's living standards, vehicles are increasing rapidly, such as cars, trucks and some large vehicles, each of which has high requirements for steering. It will affect the passage of other vehicles. At this time, snow plows are needed to clean up. The existing snow plows have a large cleaning blind spot due to the limitation of steering, which will affect the cleaning effect. [0003] The patent with the authorized announcement number CN 202098457U discloses an electro-hydraulic four-wheel steering system for two-axle or three-axle vehicles, but the front wheel steering mechanism of the steering system adopts a rack-and-pinion steering mechanism, and the rear wheel adopts a double-bar hydraulic steering me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D3/14
CPCB62D3/14
Inventor 陈彪冯为民宋宝林徐稀文刘銮敏赵咏飞钱程徐彬崔艳磊刘朋陈胤志邵先维李建华
Owner YANGZHOU JINWEI ENVIRONMENTAL PROTECTION TECH CO LTD
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