Title:
HYDRAULIC DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/070828
Kind Code:
A1
Abstract:
This hydraulic drive device is provided with first and second air-liquid converters for converting air pressure supplied from an air pressure source into hydraulic pressure, a hydraulic actuator including first and second pressure chambers, an operating state acquiring unit for acquiring the operating state of the hydraulic actuator, and first and second air pressure valves provided respectively in first and second air supply passages which supply air from the air pressure source to the first and second air-liquid converters, wherein a control device controls the first and second air pressure valves on the basis of the result acquired by the operating state acquiring unit.
Inventors:
HYON SANG-HO (JP)
MIZUI HARUTSUGU (JP)
MIZUI HARUTSUGU (JP)
Application Number:
PCT/JP2020/037901
Publication Date:
April 15, 2021
Filing Date:
October 06, 2020
Export Citation:
Assignee:
RITSUMEIKAN TRUST (JP)
International Classes:
F15B11/072
Foreign References:
| JPS61142902U | 1986-09-03 | |||
| JP2015096757A | 2015-05-21 | |||
| JPS58124804A | 1983-07-25 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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