Title:
HYDRAULIC POWER SYSTEM, WORK MACHINE, AND CONTROL METHOD FOR HYDRAULIC POWER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/001145
Kind Code:
A1
Abstract:
A hydraulic power system and a work machine. The hydraulic power system comprises: a hydraulic oil tank (3), an engine (1), a motor (2), a first pump set, and a second pump set; the engine (1) is connected to the first pump set, and the motor (2) is connected to the second pump set; the first pump set comprises a first load-sensitive pump (101), and the second pump set comprises a second load-sensitive pump (201); an oil outlet pipeline of the first load-sensitive pump (101) and an oil outlet pipeline of the second load-sensitive pump (201) are connected in parallel, and a feedback pipeline of the first load-sensitive pump (101) and a feedback pipeline of the second load-sensitive pump (201) are connected in parallel by means of a reversing valve. The engine (1) and the motor (2) are configured to be respectively connected to a pump set, and the first pump set and the second pump set are arranged in parallel, so that switching between the power sources of the engine (1) and the motor (2) is realized; moreover, the motor (2) may be flexibly arranged without being limited to the connection to a gearbox power takeoff, and the motor (2) and the second pump set are not limited to being mounted on a chassis, thereby improving mounting universality and convenience.
Inventors:
CHEN YU (CN)
WANG YU (CN)
XIAO WENBIN (CN)
WANG YU (CN)
XIAO WENBIN (CN)
Application Number:
PCT/CN2022/144124
Publication Date:
January 04, 2024
Filing Date:
December 30, 2022
Export Citation:
Assignee:
SANY MOBILE CRANES CO LTD (CN)
International Classes:
B66C13/20; F15B13/02
Foreign References:
| CN217708618U | 2022-11-01 | |||
| CN106678099A | 2017-05-17 | |||
| CN214404147U | 2021-10-15 | |||
| CN212225638U | 2020-12-25 | |||
| CN214465195U | 2021-10-22 | |||
| JP2003329005A | 2003-11-19 | |||
| JPH06200905A | 1994-07-19 |
Attorney, Agent or Firm:
BEIJING BRIGHT IP AGENCY CO., LTD. (CN)
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