Title:
APPARATUS FOR PREVENTING REVERSE MOVEMENT OF ESCALATOR
Document Type and Number:
WIPO Patent Application WO/2017/171212
Kind Code:
A1
Abstract:
The present invention relates to an apparatus for preventing the reverse movement of an escalator, comprising: a ratchet wheel (220) fixed to a driving shaft (142), which has a driving wheel (140) for moving steps while rotating by receiving power through a driving motor (100), so as to rotate with the same, and stopping the rotation thereof by a stopper when a ratchet pawl (242) is caught, thereby stopping the rotation of the driving wheel (140); and a solenoid (280) for performing control such that the ratchet pawl (242) is caught by the ratchet wheel (220) when the driving wheel (140) rotates abnormally. Therefore, if the driving wheel (140) rotates abnormally, the solenoid (280) is operated such that the ratchet pawl (242) is caught by the ratchet wheel (220), thereby stopping the rotation of the ratchet wheel (220) and resulting in the stopping of the operation of the driving wheel (140), and thus when the escalator abnormally operates, the rotation of the driving wheel immediately stops so as to stop the operation of the escalator, thereby preventing a reverse movement.
Inventors:
SONG JONG TAE (KR)
CHO GEUM YONG (KR)
CHO GEUM YONG (KR)
Application Number:
PCT/KR2017/000325
Publication Date:
October 05, 2017
Filing Date:
January 10, 2017
Export Citation:
Assignee:
HPNRT CO LTD (KR)
SEOKWANG CO LTD (KR)
SEOKWANG CO LTD (KR)
International Classes:
B66B29/00; B66B23/02; B66B23/12
Foreign References:
| KR101503707B1 | 2015-03-19 | |||
| US20120073933A1 | 2012-03-29 | |||
| US20110108386A1 | 2011-05-12 | |||
| KR20160000775A | 2016-01-05 | |||
| US20130220767A1 | 2013-08-29 |
Attorney, Agent or Firm:
PATENT LAW FIRM GRAND KOREA (KR)
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