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Patent Searching and Data


Title:
BRAKING DEVICE FOR LOW PRESS ELEVATOR
Document Type and Number:
Japanese Patent JPH04201964
Kind Code:
A
Abstract:

PURPOSE: To improve the safety by operating a braking part by a control part after the input of a stop detection signal at the time of a braking command signal being inputted during the upward travel of a cage, thus holding the stop state of the cage by the braking part.

CONSTITUTION: At the emergency stop time, the excitation of a primary side coil is cut off, and a braking command signal 31 is outputted from an operation control device 22 into a control part 21. In the case of a cage travelling downward at this time, the control part 21 immediately operates a braking part 8 to stop the cage. In the case of the cage travelling upward, the control part 21, upon receiving the braking command signal 31, waits for the input of a stop detection signal 33 from a stop detecting part 23. That is, the control part 21 operates the braking part only after the stop of the cage to hold the stop state.


Inventors:
IKEJIMA HIROYUKI
Application Number:
JP33048990A
Publication Date:
July 22, 1992
Filing Date:
November 30, 1990
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
B66B1/32; B66B5/18; B66B9/02; (IPC1-7): B66B1/32; B66B5/18; B66B9/02
Domestic Patent References:
JP62136476B
JPS6335772B21988-07-18
Attorney, Agent or Firm:
Mitsuteru Soga (5 people outside)