Title:
RAILROAD CAR VIBRATION DAMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/171911
Kind Code:
A1
Abstract:
This railroad car vibration damping device (1) comprises: an actuator (A) which is installed in a railroad car and which has a cylinder body (Cy) that extends and contracts in accordance with the supply of working fluid thereto, a pump (12) that supplies the working fluid to the cylinder body (Cy), and a motor (15) that drives the pump (12); and a control unit (C) that controls the motor (15). The control unit (C) has a protection function for initiating a forced stop when the index (Hi) indicating the overheated state of the motor (15) exceeds a first threshold (α). When the index (Hi) exceeds a second threshold (β) lower than the first threshold (α), the control unit (C) controls the energization of the motor (15) so that the index (Hi) drops to or below a third threshold (γ) that is lower than the second threshold (β).
Inventors:
OGAWA TAKAYUKI (JP)
Application Number:
PCT/JP2019/005627
Publication Date:
September 12, 2019
Filing Date:
February 15, 2019
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
B61F5/24; F15B11/02; F15B11/024; F16F9/32; F16F9/46; F16F15/02; F16F15/023
Foreign References:
JP6231630B1 | 2017-11-15 | |||
JP2015094209A | 2015-05-18 |
Attorney, Agent or Firm:
ISHIKAWA Ken (JP)
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