Title:
ELEVATOR ROPE MAINTENANCE METHOD
Document Type and Number:
WIPO Patent Application WO/2018/139434
Kind Code:
A1
Abstract:
During a maintenance inspection, an optical rope diameter measuring device is provided at a predetermined position along a path of a wire rope, rope diameter is measured at multiple measuring points while the elevator is driven in test mode, and diameter reduction at each measuring point is determined and stored as a first diameter reduction (S2_S6). During a subsequent maintenance inspection, rope diameter is similarly measured at each measuring point to determine diameter reduction constituting a second diameter reduction (S7_S11). Based on these two diameter reductions, the time at which diameter reduction will reach a predetermined threshold value is predicted for each measuring point, and the earliest time is displayed as a rope replacement time (S12_S14).
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Inventors:
KATO MITSURU (JP)
TANAKA HIROTOMO (JP)
TAKEUCHI TAKASHI (JP)
ONODA RYUJI (JP)
WATABE YUSUKE (JP)
NOTA YOSHIKI (JP)
CHIDA KAZUAKI (JP)
TANAKA HIROTOMO (JP)
TAKEUCHI TAKASHI (JP)
ONODA RYUJI (JP)
WATABE YUSUKE (JP)
NOTA YOSHIKI (JP)
CHIDA KAZUAKI (JP)
Application Number:
PCT/JP2018/001912
Publication Date:
August 02, 2018
Filing Date:
January 23, 2018
Export Citation:
Assignee:
NIPPON OTIS ELEVATOR COMPANY (JP)
MEIDENSHA ELECTRIC MFG CO LTD (JP)
MEIDENSHA ELECTRIC MFG CO LTD (JP)
International Classes:
B66B7/12; B66B5/00
Foreign References:
| JP2014101197A | 2014-06-05 | |||
| JP2008214037A | 2008-09-18 | |||
| JP2011132010A | 2011-07-07 | |||
| JP2008214037A | 2008-09-18 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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