Title:
ELEVATOR SAFETY CONTROL SYSTEM AND ELEVATOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/176547
Kind Code:
A1
Abstract:
Disclosed is an elevator safety control system in which the reliability of safety control is not impaired even if a communication abnormality occurs. This elevator safety control system comprises a first controller (7) that detects an abnormality in a car (1) and transmits an abnormality detection signal upon detecting the abnormality, and a second controller (14) that shuts off the power to a hoisting machine and a brake (6) and stops the car (1) upon receiving the abnormality detection signal. If there is an abnormality in communication with the second controller (14), the first controller (7) activates an emergency stop device (16) provided in the car (1) and stops the car (1).
Inventors:
SAITO YUKI (JP)
KONDO TAKESHI (JP)
IWAMOTO AKIRA (JP)
KONDO TAKESHI (JP)
IWAMOTO AKIRA (JP)
Application Number:
PCT/JP2020/008820
Publication Date:
September 10, 2021
Filing Date:
March 03, 2020
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B66B5/00; B66B5/02
Domestic Patent References:
| WO2006106575A1 | 2006-10-12 | |||
| WO2006090470A1 | 2006-08-31 |
Foreign References:
| JP2013180857A | 2013-09-12 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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