Title:
CONTROL SYSTEM FOR ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2020/090286
Kind Code:
A1
Abstract:
The present invention comprises: a first cage speed detection device 11A and a second cage speed detection device 11B that measure a moving speed of a cage 1; a winding machine brake 8 that applies braking to a winding machine 3; an emergency stop device 10 that brakes a cage by gripping a guide rail 9; and a control device 12 that controls the winding machine 3, the winding machine brake 8, and the emergency stop device 10 on the basis of the outputs of the first cage speed detection device 11A and the second cage speed detection device 11B. The control device 12 determines that either the first cage speed detection device 11A or the second cage speed detection device 11B that outputs high speed-side speed data is abnormal, when respective speed data output from the first cage speed detection device 11A and the second cage speed detection device 11B are different, and acceleration data of the cage 1 calculated from the high speed-side speed data among the speed data is equal to or larger than a predetermined threshold.
Inventors:
KONDO TAKESHI (JP)
INOUE SHINSUKE (JP)
NOGUCHI NAOAKI (JP)
INOUE SHINSUKE (JP)
NOGUCHI NAOAKI (JP)
Application Number:
PCT/JP2019/037219
Publication Date:
May 07, 2020
Filing Date:
September 24, 2019
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B66B5/02; B66B3/00
Domestic Patent References:
| WO2005115900A1 | 2005-12-08 |
Foreign References:
| JP2014237536A | 2014-12-18 | |||
| JP2012246073A | 2012-12-13 | |||
| JPH07206309A | 1995-08-08 | |||
| JP2015508367W |
Other References:
See also references of EP 3875418A4
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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