Title:
GYRATORY CRUSHER, AND FAILURE PREDICTION DIAGNOSTIC DEVICE AND METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/019317
Kind Code:
A1
Abstract:
This gyratory crusher comprises a mantle fixed to a main shaft, a concave forming a crushing chamber between the mantle and the concave, an eccentric sleeve supporting a lower portion of the main shaft via a lower bearing, a drive motor rotationally driving the eccentric sleeve, and a power transmission mechanism that includes a bevel pinion and a bevel gear and that transmits output of the drive motor to the eccentric sleeve, wherein: an engagement vibration acceleration generated by engagement between the bevel pinion and the bevel gear is acquired; an engagement vibration acceleration waveform is obtained by arranging, in a time series, the engagement vibration accelerations detected in a no-crushing-load-period in which an object to be crushed is not supplied to the crushing chamber; and the existence of a sign of a failure is diagnosed on the basis of an analysis result of the engagement vibration acceleration waveform.
Inventors:
KIJIMA TAKASHI
KOBAYASHI JUN
SATO YOSHICHIKA
MASUDA TAKAYUKI
KOBAYASHI JUN
SATO YOSHICHIKA
MASUDA TAKAYUKI
Application Number:
PCT/JP2021/027233
Publication Date:
January 27, 2022
Filing Date:
July 20, 2021
Export Citation:
Assignee:
KK EARTHTECHNICA (JP)
International Classes:
B02C2/06; B02C25/00; G01H17/00; G01M99/00
Foreign References:
| JP2016153120A | 2016-08-25 | |||
| JP2019202245A | 2019-11-28 | |||
| JP2001017880A | 2001-01-23 | |||
| US20140175199A1 | 2014-06-26 | |||
| CN107638900A | 2018-01-30 | |||
| JP2021104483A | 2021-07-26 |
Attorney, Agent or Firm:
ARCO PATENT & TRADEMARK ATTORNEYS (JP)
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