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Title:
HYDRAULIC DRIVEN DEVICE
Document Type and Number:
Japanese Patent JP2008298226
Kind Code:
A
Abstract:

To provide a hydraulic driven device capable of highly accurately controlling a rod position even if a load is not applied to an actuator cylinder by a simple and compact constitution.

This hydraulic driven device has a first hydraulic pressure supply part having a first bidirectional rotary hydraulic pump for supplying and discharging a hydraulic fluid to one of cylinder chambers on the piston head side or the rod side of the actuator cylinder, a second hydraulic pressure supply part having an accumulator for supplying and discharging the hydraulic fluid to the other cylinder chamber and pressure-supplying the hydraulic fluid to the accumulator, and a control device controlling the drive of these first and second hydraulic pressure supply parts.


Inventors:
HIRAIDE HIROICHI
Application Number:
JP2007146780A
Publication Date:
December 11, 2008
Filing Date:
June 01, 2007
Export Citation:
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Assignee:
YUKEN KOGYO CO LTD
International Classes:
F15B11/08; F15B9/09; F15B11/02
Domestic Patent References:
JP2005315312A2005-11-10
JPH07127606A1995-05-16
JP2002195209A2002-07-10
JP2002054602A2002-02-20
JP2001253649A2001-09-18
JP2003214351A2003-07-30
JP2001214903A2001-08-10
JP2001090704A2001-04-03
JPH112212A1999-01-06
JPS55124607U1980-09-04
JP2003518595A2003-06-10
JP2006029366A2006-02-02
Attorney, Agent or Firm:
Tadashi Hanamura
Tadashi Sato
Toshiya Sato



 
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