Title:
ABNORMALITY DETECTION DEVICE AND ABNORMALITY DETECTION METHOD OF ROLLING BEARING
Document Type and Number:
Japanese Patent JP2023128477
Kind Code:
A
Abstract:
To provide an abnormality detection device and abnormality detection method which can accurately diagnose an abnormality in a rolling bearing.SOLUTION: An abnormality detection device 100 of a rolling bearing 20 used in a rotary machine 30 in which a rotational shaft 31 connected with a gear device 40 is supported by the rolling bearing comprises: a vibration detector 17 which detects the vibration of the rolling bearing 20; and an abnormality diagnostic unit 10 which diagnoses an abnormality in the rolling bearing 20 on the basis of a vibration waveform of a time domain obtained from the vibration detector 17. The abnormality diagnostic unit 10 includes a drive analysis part 14 which determines whether the rotary machine 30 is being driven or being idled on the basis of the vibration waveform, executes abnormality detection of the rolling bearing for driving when the rotary machine 30 is being driven according to the determination result of the drive analysis part 14, and executes abnormality detection of the rolling bearing for idling when the rotary machine 30 is being idled.SELECTED DRAWING: Figure 1
Inventors:
YOSHIDA TOYOMI
HENMI MAKOTO
HAYASAKA YASUSHI
KOYAMA TAKAYUKI
HENMI MAKOTO
HAYASAKA YASUSHI
KOYAMA TAKAYUKI
Application Number:
JP2022032841A
Publication Date:
September 14, 2023
Filing Date:
March 03, 2022
Export Citation:
Assignee:
HITACHI INDUSTRIAL PRODUCTS LTD
International Classes:
G01M13/04; G01H17/00
Attorney, Agent or Firm:
Polaire Patent Attorneys Corporation
Previous Patent: stack case
Next Patent: Inspection plan creation device and inspection plan creation method
Next Patent: Inspection plan creation device and inspection plan creation method