Title:
LEG ASCENDING AND DESCENDING ELECTRIC HYDRAULIC ACTUATOR SYSTEM
Document Type and Number:
Japanese Patent JP2014132189
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a leg ascending and descending electric hydraulic actuator system for ascending and descending legs of an airplane in which an occupation space of a leg ascending and descending electric hydraulic actuator system is reduced to the minimum while securing the redundancy of hydraulic pressure supply sources, and the weight thereof is reduced.SOLUTION: A leg ascending and descending electric hydraulic actuator system 1 includes a plurality of hydraulic actuators 21, 22 and 23, one hydraulic pump 33 and one electric motor 34, and also comprises a plurality of hydraulic pressure supply sources 31 and 32 which are arranged in parallel with each other. At a normal time, the plurality of respective hydraulic pressure supply sources sequentially supply operation fluids to the plurality of hydraulic actuators. When one of the plurality of hydraulic pressure supply sources is failed, the hydraulic pressure supply source other than the failed hydraulic pressure supply source sequentially supplies the operation fluids to the plurality of hydraulic actuators.
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Inventors:
KONDO TAKU
HAGIWARA SHOGO
HAGIWARA SHOGO
Application Number:
JP2013218649A
Publication Date:
July 17, 2014
Filing Date:
October 21, 2013
Export Citation:
Assignee:
SUMITOMO PRECISION PROD CO
International Classes:
F15B11/17; B64C25/22; B64C25/26; F15B20/00
Domestic Patent References:
| JP2002139003A | 2002-05-17 |
Foreign References:
| US20050194495A1 | 2005-09-08 | |||
| GB757705A | 1956-09-26 |
Attorney, Agent or Firm:
Maeda patent office
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