EP0801021A2 - Dispositif de sécurité pour un transporteur de passagers - Google Patents

Dispositif de sécurité pour un transporteur de passagers Download PDF

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Publication number
EP0801021A2
EP0801021A2 EP97105873A EP97105873A EP0801021A2 EP 0801021 A2 EP0801021 A2 EP 0801021A2 EP 97105873 A EP97105873 A EP 97105873A EP 97105873 A EP97105873 A EP 97105873A EP 0801021 A2 EP0801021 A2 EP 0801021A2
Authority
EP
European Patent Office
Prior art keywords
passenger
combplate
passenger conveyor
conveyor
platforms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97105873A
Other languages
German (de)
English (en)
Other versions
EP0801021A3 (fr
Inventor
Mituya Uchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otis Elevator Co
Original Assignee
Otis Elevator Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otis Elevator Co filed Critical Otis Elevator Co
Publication of EP0801021A2 publication Critical patent/EP0801021A2/fr
Publication of EP0801021A3 publication Critical patent/EP0801021A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B29/00—Safety devices of escalators or moving walkways
    • B66B29/005—Applications of security monitors

Definitions

  • the present invention relates to passenger conveyors, and more particularly to safety devices for passenger conveyors such as escalators and moving walks.
  • Passenger conveyors such as escalators and moving walks, include a plurality of sequentially connected platforms that move through a closed loop path.
  • the platforms may be either escalator steps or moving walk pallets.
  • the platforms go underneath another combplate and around a sprocket for the return to the first landing.
  • a safety device includes a timer connected to a passenger detecting sensor disposed proximate to the combplate. If a passenger is detected for a time period exceeding a predetermined time threshold, the passenger conveyor is stopped.
  • a passenger conveyor is equipped with: a comb that is arranged on the exiting side; platforms that move underneath this comb; a photosensor that is arranged very close to the front edge of the aforementioned comb; a driving device which moves the platforms from the entering side to the exiting side, and a controller that controls the driving device and is equipped with a timer, and an instruction to stop driving, which is sent out from the controller to the driving device after the time in which an object that is detected by the photo-sensor exceeds a predetermined time threshold.
  • the feature of the timer connected to the passenger detecting sensor provides the advantage of preventing injury to passengers while minimizing false shut-downs of the passenger conveyor. If an object becomes lodged between the combplate and step, the sensor will detect the continued presence of the passenger associated with the object and, after the timer threshold expires, shut down the conveyor. This device avoids the false shut downs associated with mechanical switches connected to the combplate.
  • Figure 1 is a perspective view which illustrates an embodiment of an escalator having a safety apparatus according to the present invention.
  • Figure 2 is a cross-sectional side view of the escalator of Figure 1.
  • Figure 1 as well as Figure 2 are diagrams which illustrate a particular embodiment of a safety apparatus according to the present invention as applied to an escalator.
  • the escalator includes steps 1, and these steps (1) are attached to a step chain (not illustrated).
  • a pair of balustrades 2,3 are vertically installed on both sides of the steps 1, and hand rails 4,5 are provided over the balustrades 2,3.
  • Skirt guards 6,7 are provided at the lower part of the balustrades 2,3.
  • each step 1 is equipped with a tread 1a on its top face, and a riser 1b on its front face, and grooves are formed on them in the direction in which they move. Steps 1 are moved from the entering side to the exiting side 8 by a machine 9 (driving device). During this, the steps 1 come out from underneath the comb at the entering side (not illustrated), move to the exiting side 8, and they go underneath a combplate 10 that is arranged on a floor plate 11 at the exiting side 8 as illustrated in Figure 2.
  • the front edge 10a of the comb 10 is formed into the shape of a comb, and this front edge engages with the grooves that are formed in the tread 1a of the step 1.
  • the photosensor shown in Figs. 1 and 2 is an exemplary embodiment of a passenger detecting sensor. Other types of passenger detecting sensors may also be used to carry out the invention.
  • this object which is being detected by the photosensor 12
  • this signal is output to a controller 13, and this detection time is counted by a timer at the controller 13 by the subtraction method.
  • the legs of passengers also pass the front edge 10a of the comb 10, and therefore, the passenger's legs are also detected.
  • the detection time, however, for the passengers is minimal, i.e. less than 1 second.
  • a signal for stopping the operation of the escalator is output from the control panel 13 to the machine 9 when the detection time exceeds a predetermined time threshold.
  • a suggested amount for the time threshold is 5 seconds, although the setting of the time threshold can vary according to the operational condition. It should be noted that the operational efficiency of the escalator decreases when the escalator comes to frequent stops.

Landscapes

  • Escalators And Moving Walkways (AREA)
EP97105873A 1996-04-10 1997-04-09 Dispositif de sécurité pour un transporteur de passagers Withdrawn EP0801021A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP86987/96 1996-04-10
JP8698796A JPH09278337A (ja) 1996-04-10 1996-04-10 人移送装置の安全装置

Publications (2)

Publication Number Publication Date
EP0801021A2 true EP0801021A2 (fr) 1997-10-15
EP0801021A3 EP0801021A3 (fr) 1998-04-29

Family

ID=13902225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105873A Withdrawn EP0801021A3 (fr) 1996-04-10 1997-04-09 Dispositif de sécurité pour un transporteur de passagers

Country Status (4)

Country Link
EP (1) EP0801021A3 (fr)
JP (1) JPH09278337A (fr)
CN (1) CN1165778A (fr)
BR (1) BR9701726A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6520310B1 (en) 2001-12-27 2003-02-18 Inventio Ag Combplate load and obstruction sensor apparatus
FR2943650A1 (fr) * 2009-03-27 2010-10-01 Ficap Dispositif de securite et de secours pour tapis roulant de montagne.
US10071884B2 (en) 2016-07-29 2018-09-11 Otis Elevator Company Detection of state of engagement between step and comb plate of passenger conveyor
JP2021066537A (ja) * 2019-10-18 2021-04-30 株式会社日立ビルシステム ステップ踏板浮き上がり検知装置及びステップ踏板浮き上がり検知システム
US20250042699A1 (en) * 2023-08-02 2025-02-06 Otis Elevator Company Escalator entrapment detection system
US20250051141A1 (en) * 2023-08-10 2025-02-13 Otis Elevator Company Escalator entrapment detection system
US20250059004A1 (en) * 2023-08-14 2025-02-20 Otis Elevator Company Escalator combplate retraction device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002338692A1 (en) * 2002-09-13 2004-05-04 Otis Elevator Company Safety monitoring system for a people conveyor
JP5452885B2 (ja) * 2008-05-23 2014-03-26 株式会社日立製作所 乗客コンベア
JP2011225344A (ja) * 2010-04-21 2011-11-10 Hitachi Ltd 乗客コンベア
CN105540401A (zh) * 2016-01-28 2016-05-04 浙江梅轮电梯股份有限公司 一种扶梯梳齿夹人保护装置及其使用方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800998A (en) * 1988-01-21 1989-01-31 Otis Elevator Company Escalator comb safety device
JPH0811676B2 (ja) * 1989-08-23 1996-02-07 三菱電機株式会社 乗客コンベヤの安全装置
AUPN605295A0 (en) * 1995-10-18 1995-11-09 Loderway Pty. Limited Systems for the conveyance of standing passengers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6520310B1 (en) 2001-12-27 2003-02-18 Inventio Ag Combplate load and obstruction sensor apparatus
FR2943650A1 (fr) * 2009-03-27 2010-10-01 Ficap Dispositif de securite et de secours pour tapis roulant de montagne.
US8365897B2 (en) 2009-03-27 2013-02-05 Ficap Safety and rescue device for mountain conveyor belt
US10071884B2 (en) 2016-07-29 2018-09-11 Otis Elevator Company Detection of state of engagement between step and comb plate of passenger conveyor
JP2021066537A (ja) * 2019-10-18 2021-04-30 株式会社日立ビルシステム ステップ踏板浮き上がり検知装置及びステップ踏板浮き上がり検知システム
US20250042699A1 (en) * 2023-08-02 2025-02-06 Otis Elevator Company Escalator entrapment detection system
EP4541751A1 (fr) * 2023-08-02 2025-04-23 Otis Elevator Company Système de détection de piégeage d'escalier mécanique
US20250051141A1 (en) * 2023-08-10 2025-02-13 Otis Elevator Company Escalator entrapment detection system
US20250059004A1 (en) * 2023-08-14 2025-02-20 Otis Elevator Company Escalator combplate retraction device

Also Published As

Publication number Publication date
BR9701726A (pt) 1998-11-10
CN1165778A (zh) 1997-11-26
EP0801021A3 (fr) 1998-04-29
JPH09278337A (ja) 1997-10-28

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