Title:
HYDRAULIC CONTROL SYSTEM AND OPERATION MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/207294
Kind Code:
A1
Abstract:
Provided in the present application are a hydraulic control system and an operation machine. The hydraulic control system comprises a hydraulic cylinder, a control valve group, a high-pressure energy accumulator and a low-pressure energy accumulator, wherein the hydraulic cylinder is connected to the high-pressure energy accumulator and the low-pressure energy accumulator by means of the control valve group; the control valve group is used for controlling a communication state between the high-pressure energy accumulator and the hydraulic cylinder and between the hydraulic cylinder and the low-pressure energy accumulator; the high-pressure energy accumulator is used for supplying oil to the hydraulic cylinder; and the low-pressure energy accumulator is used for recovering return oil of the hydraulic cylinder. By means of the structural arrangement, the energy saving of the hydraulic control system can be greatly improved.
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Inventors:
TANG ERMENG (CN)
WANG HONGHAO (CN)
ZHANG DENGXU (CN)
WANG HONGHAO (CN)
ZHANG DENGXU (CN)
Application Number:
PCT/CN2023/078072
Publication Date:
November 02, 2023
Filing Date:
February 24, 2023
Export Citation:
Assignee:
SANY HEAVY MACHINERY LTD (CN)
International Classes:
F15B1/02
Domestic Patent References:
| WO2017068229A1 | 2017-04-27 |
Foreign References:
| CN114704510A | 2022-07-05 | |||
| CN114341441A | 2022-04-12 | |||
| CN204729383U | 2015-10-28 | |||
| CN203926235U | 2014-11-05 | |||
| CN214063439U | 2021-08-27 |
Attorney, Agent or Firm:
BEIJING BRIGHT IP AGENCY CO., LTD. (CN)
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