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Title:
BREAK DETECTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/203609
Kind Code:
A1
Abstract:
A break detecting device comprises a sensor, a storage unit (20), and a break determination unit (24). With the sensor, for example, an output signal fluctuates when vibration occurs on a main rope (4) of an elevator. The output signal from the sensor is, for example, a torque signal from a hoisting device (11). The storage unit (20) associates the fluctuation in the output signal from the sensor with the position of an elevator car (1) and stores same. The break determination unit (24) determines the presence of a broken portion (4c) on the main rope (4) on the basis of the position of the car (1) and changes in the fluctuation of the output signal from the sensor.

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WO/2012/049357METHOD IN CONNECTION WITH AN EMERGENCY STOP SITUATION OF AN ELEVATOR, AND ALSO A SAFETY ARRANGEMENT FOR AN ELEVATOR
JPH0356375CONTROL DEVICE FOR FLUID PRESSURE ELEVATOR
JPS6027626[Title of the Invention] An operation control device of an exchange elevator at the time of a power failure
Inventors:
NAKAZAWA DAISUKE (JP)
FUKUI DAIKI (JP)
KATO TOSHIAKI (JP)
MURAKAMI HIROYUKI (JP)
FUMIYA AKIRA (JP)
HAMADA KYOHEI (JP)
Application Number:
PCT/JP2016/065340
Publication Date:
November 30, 2017
Filing Date:
May 24, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MITSUBISHI ELECTRIC BUILDING TECHNO SERVICE CO LTD (JP)
International Classes:
B66B5/02
Foreign References:
JP2015078073A2015-04-23
JPH1081462A1998-03-31
JP2002333431A2002-11-22
JP2014108835A2014-06-12
JPH08104473A1996-04-23
JP2013035693A2013-02-21
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
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