Title:
BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/090520
Kind Code:
A1
Abstract:
This bearing device (2) is provided with: bearings (5a, 5b) respectively including inner rings (51a, 51b), outer rings (5ga, 5gb), and rolling bodies (Ta, Tb); a spacer (6) which is disposed adjacent to the bearings (5a, 5b) on a main shaft (4) supported by the bearings (5a, 5b), and includes an inner ring spacer (6i) and an outer ring spacer (6g); and a senor unit (9) disposed on the inner ring spacer (6i) or the outer ring spacer (6g). The sensor unit (9) includes a first sensor and a second sensor. The first sensor is a heat flow sensor (10) and the second sensor includes at least any one among a vibration sensor (11), a temperature sensor (12) and a load sensor (13).The bearing device (2) is further provided with an abnormality diagnosing and processing device (15) that diagnoses an abnormality of the bearings on the basis of the outputs of the first sensor and the second sensor and the rotation speed (N) of the main shaft (4).
More Like This:
Inventors:
KOIKE TAKASHI (JP)
FUKUSHIMA YASUYUKI (JP)
SHIBUYA YUSUKE (JP)
FUKUSHIMA YASUYUKI (JP)
SHIBUYA YUSUKE (JP)
Application Number:
PCT/JP2019/041065
Publication Date:
May 07, 2020
Filing Date:
October 18, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/52; F16C19/06; F16C35/12; F16C41/00; G01M13/04
Foreign References:
| JP2004169756A | 2004-06-17 | |||
| JP2015014586A | 2015-01-22 | |||
| JP2017191019A | 2017-10-19 | |||
| JP4147378B2 | 2008-09-10 | |||
| JP2012098253A | 2012-05-24 | |||
| JP2016008536A | 2016-01-18 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF:
Previous Patent: TRANSIMPEDANCE AMPLIFIER
Next Patent: FLUID CONTROL DEVICE AND METHOD FOR MANUFACTURING FLUID CONTROL DEVICE
Next Patent: FLUID CONTROL DEVICE AND METHOD FOR MANUFACTURING FLUID CONTROL DEVICE