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Title:
HIGHLY EFFICIENT AND ENERGY-SAVING RETURN CYLINDER FOR HYDRAULIC MACHINE AND OPERATING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/085491
Kind Code:
A1
Abstract:
A return cylinder for a hydraulic machine and an operating method thereof. The return cylinder for a hydraulic machine comprises multiple single-rod return hydraulic cylinders (5) symmetrically arranged at two sides of a main hydraulic cylinder (4). The single-rod return hydraulic cylinders cooperate with a hydraulic pump (1), an energy accumulator (7) and the main hydraulic cylinder (4) of a hydraulic machine to accomplish rapid idle stroke descent, pressing and return of a moving beam (6) and an operating portion thereof of the hydraulic machine. The return hydraulic cylinder (5) comprises a balance cylinder and a driving cylinder. The energy accumulator (7) is in communication with the balance cylinder, thereby generating a buoyant force to balance weights of the moving beam (6) and the operating portion thereof.

Inventors:
ZHANG, Lianhua (No. 999, Xiufu North Road Jianh, Yancheng City Jiangsu 0, 224700, CN)
ZHANG, Hui (No. 999, Xiufu North Road Jianh, Yancheng City Jiangsu 0, 224700, CN)
Application Number:
CN2018/091240
Publication Date:
May 09, 2019
Filing Date:
June 14, 2018
Export Citation:
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Assignee:
ZHONGKEJUXIN CLEAN ENERGY & HOT FORGING EQUIPMENT RESEARCH AND DEVELOPMENT CO., LTD. (No. 999, Xiufu North Road Jianh, Yancheng City Jiangsu 0, 224700, CN)
International Classes:
B30B15/18; F15B15/20; F15B1/00
Foreign References:
CN107672222A2018-02-09
CN206175358U2017-05-17
CN102974732A2013-03-20
CN204674066U2015-09-30
JP2000218400A2000-08-08
Other References:
None
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (Room 1215-1218, Floor 12Left Bank Community No.68 Beisihuanxilu, Haidian District, Beijing 0, 100080, CN)
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