Title:
STATE MONITORING DEVICE AND STATE MONITORING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/173831
Kind Code:
A1
Abstract:
This state monitoring device for detecting a bearing abnormality is provided with: a friction member (146) disposed in such a way as to face a circumferential surface of a rotating shaft (20) in such a way that a degree of contact changes when the rotating shaft (20), which is supported by a bearing, is displaced; and a state monitoring sensor (145) in contact with the friction member (146). The state monitoring sensor (145) is an AE sensor or an acceleration sensor. The friction member (146) is preferably disposed on the side, relative to the rotating shaft (20), on which a bearing load acting on the bearing acts. By means of such a configuration, the present invention provides a state monitoring device with which it is possible to monitor displacement of the rotating shaft with high precision, without being affected by the environment such as lubricating oil or water.
Inventors:
TSUTSUI HIDEYUKI (JP)
Application Number:
PCT/JP2018/009510
Publication Date:
September 27, 2018
Filing Date:
March 12, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
G01N29/14; G01M13/04; G01P15/00
Domestic Patent References:
| WO2014154257A1 | 2014-10-02 |
Foreign References:
| JP2016061634A | 2016-04-25 | |||
| JP2015025713A | 2015-02-05 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF: