Title:
LUBRICATION STATE ESTIMATION DEVICE AND METHOD, SLIDING BEARING DEVICE, MECHANICAL DEVICE, AND GYRATORY CRUSHER
Document Type and Number:
WIPO Patent Application WO/2022/019315
Kind Code:
A1
Abstract:
This lubrication state estimation method, with which the lubrication state of the sliding surfaces of two relatively moving objects is estimated, includes acquiring a first indicator and a second indicator, and detecting that the lubrication state of the sliding surfaces has changed from fluid lubrication to mixed lubrication on the basis of a correlation between positivity/negativity of the rate of change over time in the first indicator and positivity/negativity of the rate of change over time in the second indicator. The first indicator is the friction coefficient of the sliding surfaces or an index that correlates with the friction coefficient, and the second index is a physical quantity S* expressed by S*=ηv/F (where η is the viscosity of lubricant interposed between the sliding surfaces, v is the sliding speed of the sliding surfaces, and F is the load pressing on the sliding surfaces) or an index that correlates with the physical quantity S*.
Inventors:
SATO YOSHICHIKA
KIMOTO KENSUKE
KIMOTO KENSUKE
Application Number:
PCT/JP2021/027231
Publication Date:
January 27, 2022
Filing Date:
July 20, 2021
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F16C17/00; B02C2/06; F16C17/24; F16N29/00; F16N29/04; G01M13/04
Domestic Patent References:
| WO2019045042A1 | 2019-03-07 |
Foreign References:
| JP2004519325A | 2004-07-02 | |||
| JPS5395663A | 1978-08-22 | |||
| JP2019202245A | 2019-11-28 |
Attorney, Agent or Firm:
ARCO PATENT & TRADEMARK ATTORNEYS (JP)
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