Title:
DEVICE AND SYSTEM WITH CONTROL LOGIC FOR AUTOMATICALLY SWITCHING BETWEEN HIGH AND LOW PRESSURE, AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/174931
Kind Code:
A1
Abstract:
Disclosed are a device and system with a control logic for automatically switching between high and low pressure, and a control method therefor. The device with a control logic for automatically switching between high and low pressure comprises a first control logic unit, a second control logic unit and a control oil port assembly. The first control logic unit is connected to the second control logic unit by means of the control oil port assembly. The system with a control logic for automatically switching between high and low pressure comprises a hydraulic system and the device with a control logic for automatically switching between high and low pressure, and oil ports of the hydraulic system are respectively connected to the first control logic unit and the second control logic unit. The control method for the system with a control logic for automatically switching between high and low pressure comprises: a low-pressure pumping control step; and a high-pressure pumping control step.
Inventors:
JIA JIANHUI (CN)
SHEN QIANLI (CN)
SU YANLING (CN)
SHI FENG (CN)
SHEN QIANLI (CN)
SU YANLING (CN)
SHI FENG (CN)
Application Number:
PCT/CN2020/133555
Publication Date:
September 10, 2021
Filing Date:
December 03, 2020
Export Citation:
Assignee:
XUZHOU XCMG SCHWING MACHINERY (CN)
International Classes:
F15B13/06; F04B49/22; F15B11/16
Foreign References:
| CN111322281A | 2020-06-23 | |||
| CN106015136A | 2016-10-12 | |||
| CN103836020A | 2014-06-04 | |||
| CN2166271Y | 1994-05-25 | |||
| CN103994120B | 2016-02-24 | |||
| JPS6263188A | 1987-03-19 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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