Title:
RAILCAR DAMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/176761
Kind Code:
A1
Abstract:
This railcar damping device (1) includes: a tank (7) storing a liquid that is supplied to and discharged from a cylinder (2) of an actuator; a first open/close valve (9) provided in and being capable of opening/closing a first passage (8) that connects a rod-side chamber (5) and a piston-side chamber (6) which are partitioned by a piston (3) inserted inside the cylinder (2); a second open/close valve (11) provided in and being capable of opening/closing a second passage (10) that connects the piston-side chamber (6) and the tank (7); a pump (12) that supplies the liquid from the tank (7) to the rod-side chamber (5); a motor (15) that rotates at a given rotation speed and that drives and rotates the pump (12); and a section determining unit (44c) that determines whether the type of the section in which the railcar is traveling is an open section or a tunnel section on the basis of the deviation in speed between the target rotation speed and the actual rotation speed of the motor (15).
Inventors:
OGAWA TAKAYUKI (JP)
AOKI JUN (JP)
UCHIDA MASARU (JP)
AOKI JUN (JP)
UCHIDA MASARU (JP)
Application Number:
PCT/JP2012/065606
Publication Date:
December 27, 2012
Filing Date:
June 19, 2012
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD (JP)
OGAWA TAKAYUKI (JP)
AOKI JUN (JP)
UCHIDA MASARU (JP)
OGAWA TAKAYUKI (JP)
AOKI JUN (JP)
UCHIDA MASARU (JP)
International Classes:
B61F5/24; F16F15/02
Foreign References:
| JP2010065797A | 2010-03-25 | |||
| JP2006327529A | 2006-12-07 | |||
| JPH11139310A | 1999-05-25 | |||
| JP2003320931A | 2003-11-11 | |||
| JP2008247204A | 2008-10-16 | |||
| JP2008247333A | 2008-10-16 | |||
| JP2010065797A | 2010-03-25 |
Other References:
See also references of EP 2722247A4
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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Claims: