Title:
軸受監視装置、軸受監視方法
Document Type and Number:
Japanese Patent JP6986050
Kind Code:
B2
Abstract:
A bearing monitoring apparatus includes a rolling bearing. The rolling bearing includes an outer ring and an inner ring disposed coaxially with the outer ring, the inner ring being on an inner peripheral side of the outer ring. The rolling bearing includes multiple rolling elements disposed between the outer ring and the inner ring. The rolling bearing includes a strain gauge configured to detect strain of the outer ring or the inner ring, the strain gauge including at least two resistors, and the resistors being arranged in a same direction as an arrangement direction of the rolling elements so as to correspond to spacing between rolling elements that are next to each other. The bearing monitoring apparatus includes a waveform generator configured to generate a first distorted waveform based on an output of one resistor and to generate a second distorted waveform based on an output of another resistor. The bearing monitoring apparatus includes a subtracting unit configured to subtract the second distorted waveform from the first distorted waveform to generate a differential waveform. The bearing monitoring apparatus includes a comparator configured to compare the differential waveform against a reference value to detect a wear state of the rolling bearing.
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Inventors:
Fujio Hideo
Yuki Hirai
High Shintaro Ta
Yuki Hirai
High Shintaro Ta
Application Number:
JP2019115681A
Publication Date:
December 22, 2021
Filing Date:
June 21, 2019
Export Citation:
Assignee:
MinebeaMitsumi Co., Ltd.
International Classes:
G01M13/04; F16C19/06; F16C41/00
Domestic Patent References:
| JP201970570A | ||||
| JP2017219469A | ||||
| JP2008164448A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito