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Automatic gear shifting control method of wheel type excavator during travelling

A control method and excavator technology, applied in transmission control, earth mover/excavator, mechanical equipment, etc., to achieve smooth shifting, ensure smoothness, and easy start

Inactive Publication Date: 2020-04-28
GUIZHOU JONYANG KINETICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: Aiming at the problem of how to determine the timing of shifting, an automatic shifting method with three control conditions is provided

Method used

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  • Automatic gear shifting control method of wheel type excavator during travelling
  • Automatic gear shifting control method of wheel type excavator during travelling

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Experimental program
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Effect test

Embodiment

[0016] The wheeled excavator includes a controller, a transmission case, a travel pump, a high-speed solenoid valve and a low-speed solenoid valve. The control method includes: the controller collects the speed signal of the transmission case and the pressure signal of the travel pump, converts the speed signal of the transmission case into the travel speed of the excavator after calculation, and compares the pressure value of the travel pump with the travel speed value to obtain the first value. The calculation result is obtained, and the high-speed solenoid valve and the low-speed solenoid valve are controlled to switch between the high-speed gear and the low-speed gear of the excavator according to the first calculation result.

[0017] If the driving speed is less than 1km / h, start timing. If the driving speed is less than 1km / h for 200ms, the low-speed solenoid valve will be turned on, and the excavator will drive in a low-speed gear; if the driving speed is less than 1km / ...

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PUM

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Abstract

The invention discloses an automatic gear shifting control method of a wheel type excavator during travelling. The method involves a high-speed gear and a low-speed gear, and is characterized in thatthe travelling speed and the running pump pressure value of the excavator are collected, a controller is used for carrying out comparison operation, and when the travelling speed and the running pumppressure value meet preset conditions, a transmission mode of a gear box is controlled to be the low-speed gear or the high-speed gear. According to the method, certain absorption, attenuation and buffering functions can be played, and the impact and dynamic load on an engine are greatly reduced; and due to the good self-adaptive control, the gear shifting is realized automatically, the gear shifting times in the running process are greatly reduced, the excavator is easily started and stable in gear shifting, and the operation convenience is increased.

Description

technical field [0001] The invention relates to the field of automatic control of excavators. Background technique [0002] At present, the wheeled excavator (hereinafter referred to as the excavator) usually controls the displacement of the travel motor by manually operating the high and low speed selector switch according to the actual working conditions, and finally controls the excavator to travel at high speed or low speed. [0003] With the development of electronic technology and control technology, vehicle automatic transmission technology has entered the era of intelligence, and the continuous improvement of control strategies has become a feature of the development of vehicle automatic transmission technology. The automatic control of vehicle running has become the current development trend. There are already structures in the prior art that can realize automatic shifting. For example, an automatic shifting mechanism disclosed in Chinese patent CN 106704583A Reali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H61/04F16H61/10E02F9/00
CPCE02F9/00F16H61/0213F16H61/0437F16H61/10
Inventor 杨忠祥农权刘鑫李林王锐军
Owner GUIZHOU JONYANG KINETICS
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