Title:
TILT ANGLE CONTROL DEVICE FOR HYDRAULIC ROTARY MACHINE
Document Type and Number:
WIPO Patent Application WO/2017/195589
Kind Code:
A1
Abstract:
This tilt angle control device for a hydraulic rotary machine is provided with: a servo piston that moves in the flow rate increasing direction and the flow rate decreasing direction; a first housing that forms a first pressure receiving chamber and a second pressure receiving chamber between the first housing and the servo piston; a second housing in which a storage hole extending in parallel with the axial direction of the servo piston is provided; a reference flow path that connects a supply path formed in a casing of the hydraulic rotary machine and the first pressure receiving chamber; a spool which is disposed in the storage hole and which, when moved from the pressure adjustment position, connects the second pressure receiving chamber to one of the supply path and a tank depending on the moving direction; a feedback piston disposed in the storage hole and connected to the servo piston via a feedback lever; a spring that biases the spool and the feedback lever so as to be separated from each other; and a solenoid that presses the spool from the opposite side of the spring by a pressing force proportional to a command current.
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Inventors:
KOMADA KOICHI
KURODA YUICHIRO
NISHIDA SHINJI
KURODA YUICHIRO
NISHIDA SHINJI
Application Number:
PCT/JP2017/016337
Publication Date:
November 16, 2017
Filing Date:
April 25, 2017
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F04B1/26; F03C1/253; F04B49/06; F04B49/12
Domestic Patent References:
| WO2006129431A1 | 2006-12-07 |
Foreign References:
| JPH0482384U | 1992-07-17 | |||
| JPS643089U | 1989-01-10 | |||
| JPS59140975A | 1984-08-13 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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