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Patent Searching and Data


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 (World Trade Center Bldg. 4-1, Hamamatsu-cho 2-chome, Minato-k, Tokyo 11, 〒1056111, JP)
Application Number:
JP2019/005627
Publication Date:
September 12, 2019
Filing Date:
February 15, 2019
Export Citation:
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Assignee:
KYB CORPORATION (World Trade Center Bldg, 4-1 Hamamatsu-cho 2-chome, Minato-k, Tokyo 11, 〒1056111, JP)
International Classes:
B61F5/24; F15B11/02; F15B11/024; F16F9/32; F16F9/46; F16F15/02; F16F15/023
Foreign References:
JP6231630B12017-11-15
JP2015094209A2015-05-18
Attorney, Agent or Firm:
ISHIKAWA Ken (Maruhiro Kyobashi Bldg. 9th Floor, 5-12 Kyobashi 1-chome, Chuo-k, Tokyo 31, 〒1040031, JP)
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