Title:
BLADE HOISTING TOOL AND HYDRAULIC SYSTEM THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/041997
Kind Code:
A1
Abstract:
A blade hoisting tool and a hydraulic system thereof. The hydraulic system comprises: driving units (4, 04), driving hydraulic oil in the hydraulic system to form oil supply paths and oil return paths, and supplying oil to oil cylinders by means of the oil supply paths or releasing the hydraulic oil in the oil cylinders by means of the oil return paths, the oil cylinders comprising a first oil cylinder (115), a second oil cylinder (117), and a third oil cylinder (1182); a first pressure maintaining unit, connected between the first oil cylinder (115) and the driving units (4, 04) to allow for oil supply and oil return of the first oil cylinder (115); a second pressure maintaining unit, connected between the second oil cylinder (117) and the driving units (4, 04) to allow for oil supply and oil return of the second oil cylinder (117); a third pressure maintaining unit, connected between the third oil cylinder (1182) and the driving units (4, 04) to allow for oil supply and oil return of the third oil cylinder (1182); and a first valve unit (28), a second valve unit (31), and a third valve unit (35), respectively provided on the oil supply paths and oil return paths of the first oil cylinder (115), the second oil cylinder (117), and the third oil cylinder (1182), wherein the first oil cylinder (115), the second oil cylinder (117), and the third oil cylinder (1182) are used for driving blade clamps of the blade hoisting tool to clamp a blade.
Inventors:
ZHANG ZHONGWEI (CN)
ZHANG ZHU (CN)
WU NING (CN)
HUANG KEWEI (CN)
HUANG JIANWEI (CN)
SU WEI (CN)
ZHANG ZHU (CN)
WU NING (CN)
HUANG KEWEI (CN)
HUANG JIANWEI (CN)
SU WEI (CN)
Application Number:
PCT/CN2021/102467
Publication Date:
March 03, 2022
Filing Date:
June 25, 2021
Export Citation:
Assignee:
JIANGSU GOLDWIND SCIENCE & TECH CO LTD (CN)
CHENGDU SHIWEI TECH CO LTD (CN)
CHENGDU SHIWEI TECH CO LTD (CN)
International Classes:
B66C1/44; B66C13/04; B66C13/18; F03D13/10; F15B11/16; F15B13/01; F15B13/02
Foreign References:
| CN112010169A | 2020-12-01 | |||
| CN106429820A | 2017-02-22 | |||
| JP2005090705A | 2005-04-07 | |||
| CN204239359U | 2015-04-01 | |||
| CN104088828A | 2014-10-08 | |||
| US20150028608A1 | 2015-01-29 | |||
| CN209685157U | 2019-11-26 | |||
| US20130074335A1 | 2013-03-28 | |||
| JP2003239903A | 2003-08-27 | |||
| CN101927952A | 2010-12-29 |
Attorney, Agent or Firm:
MING & SURE INTELLECTUAL PROPERTY LAW FIRM (CN)
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