Control method of steering central shaft and hydraulic control system
A hydraulic control system and steering center technology, which is applied to automatic steering control components, steering mechanisms, steering rods, etc., can solve the problems of cumbersome steering control process, complex suspension system and steering system structure, etc., to simplify the structure and improve the control. The effect of precision
Active Publication Date: 2014-08-27
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
[0009] The object of the present invention is to provide a steering central shaft control method and a hydraulic control system to solve the problem that the existing multi-axle vehicle needs to use the suspension system to lift the steering central shaft during the crab steering when the existing multi-axle vehicle is turning, causing the vehicle to turn The technical problems of cumbersome control process and complex structure of suspension system and steering system
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[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in a variety of different ways defined and covered by the claims.
[0029] Such as figure 1 with figure 2 As shown, the present invention provides a steering central axis control method, which includes:
[0030] S01: If the vehicle is in the normal driving mode, control the steering angle of the steering central axis to reach the first target steering angle, and the first target steering angle is zero;
[0031] S02: If the vehicle is in the crab steering or anti-yaw driving mode, control the steering angle of the steering central axis to reach a second target steering angle, and the second target steering angle is based on the steering angle of the first steering shaft of the vehicle determine.
[0032] Specifically, before controlling the steering angle of the steering center axis to reach the first target steerin...
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The invention provides a control method of steering central shaft and hydraulic control system. The control method comprises the following steps: controlling the steering angle of the steering central shaft to zero when the vehicle is in normal travelling mode; controlling steering angle of the steering central shaft to the target steering angle when the vehicle is in crab-like steering or anti-deflection travelling mode; determining the target steering angle according to the steering angle of the first steering shaft of the vehicle. The hydraulic control system comprises a hydraulic oil supplying device, a steering solenoid valve connected with a power-assisted steering cylinder of the steering central shaft and a controller for controlling the steering solenoid valve to make the steering angle of the steering central shaft reach up to target steering angle. The control method of steering central shaft provided by the invention has the advantages that the invention is convenient for operating, high in steady state precision requirement and low in dynamic precision requirement. The hydraulic control system of the steering central shaft provided by the invention is simple in structure. All hydraulic elements are switch valves. The invention had low requirement of cleanness, safety and reliability, and low cost.
Description
Technical field [0001] The invention relates to the field of engineering machinery, and in particular to a control method and hydraulic control system of a steering central shaft. Background technique [0002] The wheeled vehicle steering system has a direct relationship with the safety, maneuverability and handling stability of the vehicle. [0003] With the development of heavy-duty vehicles, the load of the whole vehicle is getting heavier and the number of axles is increasing, so the body is getting longer and longer. The driving space and working space of the vehicle make the steering system have higher requirements: on the one hand Reducing the turning radius requires an increase in the number of steering axles so that the front and rear axles can be steered; on the other hand, a variety of steering modes are required to meet different working space requirements. [0004] The development of electro-hydraulic control technology has also enabled the application of electro-hydrau...
Claims
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IPC IPC(8): B62D5/06B62D6/00B62D113/00
Inventor 詹纯新刘权郭堃王启涛彭佳
Owner ZOOMLION HEAVY IND CO LTD