ELEVATOR AND ELEVATOR CONTROL METHOD

Title:

ELEVATOR AND ELEVATOR CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2020/170503

Kind Code:

A1

Abstract:

One embodiment of the present invention comprises: a cage speed detection device that measures cage speed; an emergency braking device that applies emergency braking for the cage by pressing against a guide rail if the cage speed exceeds a threshold value; an electric actuation unit that electrically actuates the emergency braking device; a battery that supplies power when the commercial power source is interrupted; and a safety control unit that monitors elevator abnormalities and controls operation of the electric actuation unit. The safety control unit measures remaining battery capacity when power is being supplied from the battery, determines whether operation of the emergency braking device during commercial power source restoration is possible on the basis of changes in the remaining battery capacity, and controls operation of the electric actuation unit during commercial power source restoration on the basis of the determination.

Inventors:

KONDO TAKESHI (JP)
INOUE SHINSUKE (JP)
OHNUMA NAOTO (JP)
SUZUKI YASUTAKA (JP)
IDE KOHICHIROH (JP)

Application Number:

PCT/JP2019/040944

Publication Date:

August 27, 2020

Filing Date:

October 17, 2019

Export Citation:

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Assignee:

HITACHI LTD (JP)

International Classes:

B66B5/02

Foreign References:

JP2011121742A	2011-06-23
JP2017178598A	2017-10-05
JP2011105412A	2011-06-02
JP2010208779A	2010-09-24
US20180237263A1	2018-08-23
JP2005105647A	2005-04-21

Other References: