Title:
POSITIVE FLOW EXCAVATOR, CONTROL METHOD AND CONTROL DEVICE THEREFOR, AND CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2023/226289
Kind Code:
A1
Abstract:
Embodiments of the present application provide a positive flow excavator, a control method and control device therefor, and a controller. The control method for a positive flow excavator comprises: obtaining the arm-in pilot pressure of the positive flow excavator; determining an action type of the positive flow excavator; under the condition that the action type is a preset action type, determining the allowable maximum secondary pressure of an arm-in electromagnetic valve, and determining a control current of the arm-in electromagnetic valve according to the maximum secondary pressure and the arm-in pilot pressure; under the condition that the action type is not the preset action type, determining the control current of the arm-in electromagnetic valve according to the arm-in pilot pressure; and outputting the control current to the arm-in electromagnetic valve so as to control an arm-in speed. According to the embodiments of the present application, different control policies can be set for an arm valve core according to different actions and different loads, the ground leveling performance of the positive flow excavator during a ground leveling operation is improved, and moreover, the oil consumption and the operation efficiency during an excavation operation are both considered.
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| WO/2022/083186 | EXCAVATOR AND CONTROL METHOD FOR EXCAVATOR |
Inventors:
GAO JIANCHANG (CN)
YUAN YE (CN)
WU YUANFENG (CN)
WEI XUEPING (CN)
YUE BAOGEN (CN)
DI XIANG (CN)
YUAN YE (CN)
WU YUANFENG (CN)
WEI XUEPING (CN)
YUE BAOGEN (CN)
DI XIANG (CN)
Application Number:
PCT/CN2022/126642
Publication Date:
November 30, 2023
Filing Date:
October 21, 2022
Export Citation:
Assignee:
ZOOMLION EARTHMOVING MACHINERY CO LTD (CN)
ZOOMLION SHAANXI WESTERN EARTHMOVING MACHINERY CO LTD (CN)
ZOOMLION SHAANXI WESTERN EARTHMOVING MACHINERY CO LTD (CN)
International Classes:
E02F3/28; E02F1/00; E02F3/36; E02F3/40; E02F3/42; E02F3/43; E02F9/20
Foreign References:
| CN115030246A | 2022-09-09 | |||
| CN106869223A | 2017-06-20 | |||
| CN107859087A | 2018-03-30 | |||
| CN114809174A | 2022-07-29 | |||
| CN105714873A | 2016-06-29 | |||
| US5361211A | 1994-11-01 | |||
| JPH093977A | 1997-01-07 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
Download PDF:
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