Title:
WIRE ROPE DAMAGE DETECTION METHOD, AND SIGNAL PROCESSING DEVICE AND DAMAGE DETECTION DEVICE USED FOR WIRE ROPE DAMAGE DETECTION
Document Type and Number:
WIPO Patent Application WO/2018/109824
Kind Code:
A1
Abstract:
A magnetization detector (10) is provided with permanent magnets (11, 12) which magnetize a wire rope W in a longitudinal direction, and a search coil (13) which detects a change in the cross sectional area of the wire rope W magnetized by the permanent magnets (11, 12). The magnetization detector (10) is disposed so as to surround a part of the wire rope W. Prior to inspection, the magnetization detector (10) is moved back and forth at least three times across an inspection range for the wire rope W. After the magnetization detector (10) has been moved back and forth, a signal output from the search coil (13) is used to inspect a change in the cross sectional area, i.e., damage to the wire rope W.
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Inventors:
ITOI HIROAKI (JP)
SHIIKI SADANORI (JP)
SUGAHARA MASAMICHI (JP)
MORIYA TOSHIYUKI (JP)
SHIIKI SADANORI (JP)
SUGAHARA MASAMICHI (JP)
MORIYA TOSHIYUKI (JP)
Application Number:
PCT/JP2016/087019
Publication Date:
June 21, 2018
Filing Date:
December 13, 2016
Export Citation:
Assignee:
TOKYO ROPE MFG CO (JP)
International Classes:
G01N27/83
Foreign References:
| JPH0687861U | 1994-12-22 | |||
| JPH02257055A | 1990-10-17 | |||
| JP2008002826A | 2008-01-10 | |||
| JP2000055885A | 2000-02-25 | |||
| JP2000019160A | 2000-01-21 | |||
| JPH07505468A | 1995-06-15 | |||
| JP2010014659A | 2010-01-21 | |||
| JP2002156363A | 2002-05-31 | |||
| JP2006177747A | 2006-07-06 |
Attorney, Agent or Firm:
PATENT PROFESSIONAL CORPORATION TOKYO UIT INTERNATIONAL et al. (JP)
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