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Method for controlling static and dynamic liquid composite steering delay of caterpillar

A hysteresis control and vehicle technology, applied in the direction of fluid steering mechanism, etc., can solve problems such as pressure fluctuations of pump motors, and achieve the effects of improving stability, saving fuel, and improving performance

Inactive Publication Date: 2011-08-17
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to aim at the above-mentioned defects existing in the prior art, and to provide a static-dynamic-hydraulic compound steering special control valve suitable for use in military crawler vehicles. The function of control is to solve the problem of pressure fluctuation of the pump motor in the static and dynamic hydraulic compound steering, and realize smooth steering. The control valve can effectively suppress the pressure fluctuation of the pump motor, prolong the service life of the pump motor, and improve the performance of the static and dynamic hydraulic compound steering system

Method used

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  • Method for controlling static and dynamic liquid composite steering delay of caterpillar
  • Method for controlling static and dynamic liquid composite steering delay of caterpillar
  • Method for controlling static and dynamic liquid composite steering delay of caterpillar

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The static and dynamic fluid compound steering hysteresis control method of the tracked vehicle in this embodiment includes the following steps:

[0034] 1) Select the conjoined pump motor, zero shaft, coupling, load, proportional flow valve, electromagnetic reversing valve, relief valve and microprocessor; the conjoined pump motor is connected to the pressure sensor through the oil pipe, and the conjoined pump motor passes through The zero axis is connected to the load; the zero axis is connected to a coupling through the steering wheel, connected to the other coupling through the gear, and connected to the electromagnetic reversing valve through the oil pipe; the electromagnetic reversing valve is connected in series with the proportional flow valve through the valve plate, The electromagnetic reversing valve is connected in parallel with the overflow valve through the proportional flow valve; one end of the microprocessor is connected with the pressure sensor, and the...

Embodiment 2

[0055] The static and dynamic fluid compound steering hysteresis control method of the tracked vehicle in this embodiment includes the following steps:

[0056] 1) Select the conjoined pump motor, zero shaft, coupling, load, proportional flow valve, electromagnetic reversing valve, relief valve and microprocessor; the conjoined pump motor is connected to the pressure sensor through the oil pipe, and the conjoined pump motor passes through The zero axis is connected to the load; the zero axis is connected to a coupling through the steering wheel, connected to the other coupling through the gear, and connected to the electromagnetic reversing valve through the oil pipe; the electromagnetic reversing valve is connected in series with the proportional flow valve through the valve plate, The electromagnetic reversing valve is connected in parallel with the overflow valve through the proportional flow valve; one end of the microprocessor is connected with the pressure sensor, and the...

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Abstract

The invention relates to a method for controlling the static and dynamic liquid composite steering delay of a caterpillar. The method comprises the following steps: using a pressure change course curve and the participation and operation quit timing of a coupler of a steering pump motor as a control target; and controlling the oil charging and discharging mass of the coupler through an electro-hydraulic proportional valve to control the output torque of the coupler, thereby reaching the purpose of controlling the pressure fluctuation of the pump motor. The control valve special for the static and dynamic liquid composite steering of the caterpillar enables the performance of a static and dynamic liquid composite steering system to be prompted, can enhance the riding comfortableness of a tank, reduce the labor intensity of a driver, prolong the service life of the pump motor, enhance the steering efficiency of the steering system, fully utilize energy sources and save fuel.

Description

technical field [0001] The invention relates to a special control valve, in particular to a compound steering control method for a vehicle. Background technique [0002] At present, a certain type of crawler vehicle adopts a pure hydraulic control scheme for static and dynamic hydraulic compound stepless steering. The action of the oil filling valve, but another negative effect brought by the throttling method is that the opening and closing response time of the steering control valve is long, the pressure fluctuation of the pump motor is large, and the fluctuation time is long. A pilot valve is connected in series in front of the oil filling valve of the coupling, and the opening pressure of the pilot valve is lower than that of the main valve. By testing the pressure change of the vehicle steering condition, the opening and closing response of the valve group is improved, but the response time and The amplitude of fluctuation is still long; therefore, a new control valve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/10B62D5/08
Inventor 秦绪情罗晓梅郭书彪吴庆彤唐守生冀海马晓枫徐鸣顾宏韬郭刘洋吴超李惠渊卜树峰徐宜
Owner CHINA NORTH VEHICLE RES INST
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