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1. (WO2018124182) FAULT DIAGNOSIS DEVICE AND FAULT DIAGNOSIS METHOD FOR SPEED REDUCERS, AND MECHANICAL DEVICE COMPRISING SAME FAULT DIAGNOSIS DEVICE

Pub. No.:    WO/2018/124182    International Application No.:    PCT/JP2017/046908
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 28 00:59:59 CET 2017
IPC: B25J 19/06
G01M 13/02
Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA
川崎重工業株式会社
Inventors: TAGUCHI, Tetsuya
田口 哲也
KITAMURA, Shinji
北村 伸二
KAWAI, Makoto
川井 淳
KANEDA, Tetsuo
兼田 哲男
Title: FAULT DIAGNOSIS DEVICE AND FAULT DIAGNOSIS METHOD FOR SPEED REDUCERS, AND MECHANICAL DEVICE COMPRISING SAME FAULT DIAGNOSIS DEVICE
Abstract:
This fault diagnosis device for speed reducers is a fault diagnosis device (1) for a speed reducer (13) that is provided in a mechanical device (11) driven by a motor (14) so that the rotational power of the motor is reduced and transmitted to an operating unit (12) of the mechanical device and is configured so as to specify an acceleration and deceleration period during which the operation of the mechanical device is accelerated and decelerated and to determine whether there is indication of a speed reducer fault on the basis of changes in the frequency spectrum in the motor current with respect to changes in the rotational speed of the motor during the acceleration and deceleration period.