WO2014188051A1 - Système de détection de déraillement d'ascenseur et système d'ascenseur le comprenant - Google Patents

Système de détection de déraillement d'ascenseur et système d'ascenseur le comprenant Download PDF

Info

Publication number
WO2014188051A1
WO2014188051A1 PCT/FI2013/050558 FI2013050558W WO2014188051A1 WO 2014188051 A1 WO2014188051 A1 WO 2014188051A1 FI 2013050558 W FI2013050558 W FI 2013050558W WO 2014188051 A1 WO2014188051 A1 WO 2014188051A1
Authority
WO
WIPO (PCT)
Prior art keywords
elevator
derailment detection
detection system
position switch
movable element
Prior art date
Application number
PCT/FI2013/050558
Other languages
English (en)
Inventor
Jaakko KALLIOMÄKI
Original Assignee
Kone Corporation
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 Kone Corporation filed Critical Kone Corporation
Priority to PCT/FI2013/050558 priority Critical patent/WO2014188051A1/fr
Publication of WO2014188051A1 publication Critical patent/WO2014188051A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
    • B66B5/022—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system where the abnormal operating condition is caused by a natural event, e.g. earthquake

Definitions

  • Elevator derailment detection system and elevator system comprising the same
  • the present invention relates elevators and, in particular, for systems for detecting the railment of a movable element within an elevator.
  • Derailment detection is an important safety feature. If
  • the elevator system In case derailment is detected, the elevator system must either be set to an inoperative state or be operated in emergency mode only .
  • FIG 1 schematically illustrates an elevator system 10 which comprises at least one elevator shaft 18.
  • at least one elevator car 11 is arranged in such a manner that it can be moved up and down in the elevator shaft 18.
  • At least one counterweight 12 is arranged to balance the movement of the elevator car 11.
  • Elevator car 11 and counterweight 12 are connected to each other via at least one hoist 14 (typically cable or belt) that forms a continuous loop around a raotor- driven pulley 15 and another pulley 16.
  • hoist 14 typically cable or belt
  • a derailment detection rope 13 (such as a steel rope) is attached to a powered (by voltage source 22, for example, as illustrated in FIG 2) safety circuit 20 via a relay 21.
  • the detection rope 13 runs the full elevator shaft 18 length adjacent to the counterweight 12.
  • the counterweight 12 is equipped with a derailment detection ring 17 (made from
  • derailment detection rope 13 has no guidance between the top and bottom ends. This makes the derailment detection rope 13 to swing with wind induced building sway, if the elevator system 10 is installed in a high rise building. The sway can be reduced by increasing the tension in the derailment detection rope 13, but this method is quickly exhausted as the travel gets longer, as explained in WO 2011/010991 Al . This makes this approach unsuitable for high rise buildings.
  • counterweight 12 is connected to an open derailment detection ring 37 that allows the derailment detection rope 13 to be guided at certain interval d with isolated fixing elements 31 attached to elevator shaft 18.
  • This approach requires a robust fixing and a larger number of fixing elements 31.
  • the robust fixing requires large opening in the derailment detection ring 37, which may permit the derailment detection rope to exit the ring 37 without triggering the safety circuit 20.
  • this approach may be quite sensitive to the installation tolerance of the fixing elements 31. Even a minute installation error may cause the fixing element 31 to hit the derailment detection ring 37 and damage the system.
  • the objective of the invention is to avoid false derailment detection trips that result from swaying of the building by high winds and the like, more reliably than in the traditional ring- on-a-string approach. This objective can be achieved with an elevator derailment detection system according to patent claim 1, and with an elevator system according to patent claim 10.
  • the elevator derailment detection system comprises: a) a movable element, such as elevator car or counterweight, slidably mounted on a rail; b) an electrical conductor, such as a steel rope, extending through a hoistway, the electrical conductor being held at electric potential; and c) a sensor connected to the movable element, comprising: cl) a derailment detection ring enclosing the electrical conductor at the location of the derailment detection ring; and c2 ) a position switch configured to electrically connect the derailment detection ring to a different electric potential if the relative position between the position switch and the rail indicates that the movable element has derailed, c3) the derailment detection ring and the position switch configured to coactively cause a ground fault at the electrical conductor; and d) safety circuit configured for detecting ground fault of the electrical conductor.
  • a movable element such as elevator car or counterweight
  • the elevator derailment detection system can be applied to buildings that are so high that the ring-on-a-string approach would not work, since the detection system is immune to rope sway: only such a derailment that is also detected by a position switch can cause a trip.
  • the elevator derailment detection system can be implemented with relatively simple mechanical parts. Compared with the Otis Electrical Company solution presented in WO 2011/010991 Al, the isolated fixing elements may be omitted which may result in easier installation, in particular if the installation
  • the derailment detection ring comprises a grounded outer sleeve and an inner sleeve, both being electrically conductive, and electrical isolation between them, false trips can be better avoided, since in order to cause a trip either a supplementary connecting of the inner sleeve to the outer sleeve or such a mechanical deformation of the sleeves causing the sleeves to touch each other is necessary.
  • the position switch is configured to connect the outer sleeve to the inner sleeve if the relative position between the position switch and the rail indicates that the movable element has derailed.
  • the position switch may be configured to connect the inner sleeve to the potential of the outer sleeve, if the relative position between the position switch and the rail indicates that the movable element has derailed. This way of operation is even more efficient against false alarms.
  • the position switch is or comprises a roller level. With a roller level, derailment can be reliably detected.
  • the roller level is configured between the movable element and the rail such as by biasing it with a compression spring to follow the rail, for example.
  • a compression spring to follow the rail
  • the elevator derailment detection system is configured to detect derailment of an elevator car, a counterweight, or both.
  • FIG 1 and 2 schematically illustrate ring-on-a-string
  • FIG 3 schematically illustrates the derailment
  • FIG schematically illustrates the improved derailment detection system
  • FIG shows a detail of the derailment detection ring
  • FIG 7 shows a second possibility of electrically
  • FIG 4 schematically illustrates the improved derailment
  • Electric controller 42 operates different parts of the elevator system 10, such as the elevator motor 41 to rotate pulley 15 for accelerating and braking of elevator car 11, for example.
  • Elevator car operator interface 44 and floor level operator interfaces 45 can be used to send commands to electric
  • Derailment detection system 40 comprises a modified derailment detection ring 48 and a position switch 54.
  • the derailment detection system 40 may be connected to ground fault sensor 43.
  • Ground fault sensor 43 may be implemented as part of electric controller 42, or as a separate sensor. In case ground fault sensor 43 detects a ground fault in the derailment detection system 40, the elevator car 11 may stopped or further use of the elevator may be prevented or allowed in emergency mode only.
  • counterweight derailment detection in high rise buildings can be improved with the modified derailment detection ring 48 (cf. FIG 5) and by adding the position switch 54 to the derailment detection system 40, in order to eliminate false trips (i.e false safety chain
  • the internal surface (inner sleeve 52) of the derailment detection ring 48 is isolated from ground (such as by using electrically isolating material 53) .
  • the position switch 54 that most preferably is a safety switch is used to close the circuit for grounding the inner sleeve 52.
  • FIG 5 and 6 illustrate the embodiment in which the outer sleeve 51 is be grounded and the position switch 54 is used to connect the grounded outer sleeve 51 to the inner sleeve 52 if the relative position between the position switch 54 and rail 70 indicates that the movable element (elevator car 11 or
  • FIG 7 illustrates the embodiment in which the inner sleeve 52 is connected to ground by the position switch 54 if the relative position between the position switch 54 and rail 70 indicates that the movable element (elevator car 11 or counterweight 12) has derailed.
  • detection rope 13 is to carry information of the derailment to the ground fault sensor 43 or electric controller 42 located in the machine room of the elevator system 10.
  • the roller guide 71 has a spring 74 to apply force on the guide rail 70. If the guide rail 70 is not present, the spring 74 will push the cam 73 forward. This can be detected by position switch 54.
  • a safety switch according to European Norm EN 1088, has the task of preventing the operation of the elevator in the case of a hazard.
  • a safety circuit 20 must be opened by the safety switch, such as via safety relay switch 23. All mechanical safety switches have at least one positively driven normally closed contact for this purpose.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

La présente invention concerne un système de détection de déraillement d'ascenseur (40) qui comprend un élément mobile (11, 12) monté coulissant sur un rail (70), un conducteur électrique (13) s'étendant dans une gaine (18), le conducteur électrique (13) étant maintenu à un certain potentiel électrique, et un capteur (40) connecté à l'élément mobile (11, 12). Le capteur comprend un anneau de détection de déraillement (48) renfermant le conducteur électrique (13) à l'endroit de l'anneau de détection de déraillement (48), et un interrupteur de position (71, 72, 73, 74, 75, 4) conçu pour connecter électriquement l'anneau de détection de déraillement (48) à un potentiel électrique différent si la position relative entre l'interrupteur de position (71, 72, 73, 74, 75, 54) et le rail (70) indique que l'élément mobile (11, 12) a déraillé. L'anneau de détection de déraillement (48) et l'interrupteur de position (71, 72, 73, 74, 75, 54) sont conçus pour provoquer coactivement un défaut à la terre au niveau du conducteur électrique (13).
PCT/FI2013/050558 2013-05-22 2013-05-22 Système de détection de déraillement d'ascenseur et système d'ascenseur le comprenant WO2014188051A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2013/050558 WO2014188051A1 (fr) 2013-05-22 2013-05-22 Système de détection de déraillement d'ascenseur et système d'ascenseur le comprenant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2013/050558 WO2014188051A1 (fr) 2013-05-22 2013-05-22 Système de détection de déraillement d'ascenseur et système d'ascenseur le comprenant

Publications (1)

Publication Number Publication Date
WO2014188051A1 true WO2014188051A1 (fr) 2014-11-27

Family

ID=51933000

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2013/050558 WO2014188051A1 (fr) 2013-05-22 2013-05-22 Système de détection de déraillement d'ascenseur et système d'ascenseur le comprenant

Country Status (1)

Country Link
WO (1) WO2014188051A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017019236A1 (fr) * 2015-07-27 2017-02-02 Wurtec Elevator Products & Services Système de signalisation de contrepoids d'ascenseur
WO2018198283A1 (fr) * 2017-04-27 2018-11-01 三菱電機株式会社 Dispositif de détection de déraillement destiné à des ascenseurs
WO2019180910A1 (fr) * 2018-03-23 2019-09-26 三菱電機株式会社 Détecteur de déraillement destiné à un ascenseur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643276A (en) * 1985-05-02 1987-02-17 Westinghouse Electric Corp. Elevator system
JPS6469485A (en) * 1987-09-09 1989-03-15 Toshiba Corp Derailment detector for elevator
WO2011010991A1 (fr) * 2009-07-20 2011-01-27 Otis Elevator Company Système de détection de déraillement d'ascenseur résistant à une oscillation de bâtiment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643276A (en) * 1985-05-02 1987-02-17 Westinghouse Electric Corp. Elevator system
JPS6469485A (en) * 1987-09-09 1989-03-15 Toshiba Corp Derailment detector for elevator
WO2011010991A1 (fr) * 2009-07-20 2011-01-27 Otis Elevator Company Système de détection de déraillement d'ascenseur résistant à une oscillation de bâtiment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017019236A1 (fr) * 2015-07-27 2017-02-02 Wurtec Elevator Products & Services Système de signalisation de contrepoids d'ascenseur
WO2018198283A1 (fr) * 2017-04-27 2018-11-01 三菱電機株式会社 Dispositif de détection de déraillement destiné à des ascenseurs
JPWO2018198283A1 (ja) * 2017-04-27 2019-07-11 三菱電機株式会社 エレベータの脱レール検出装置
US11518649B2 (en) 2017-04-27 2022-12-06 Mitsubishi Electric Corporation Elevator derailment detecting device
WO2019180910A1 (fr) * 2018-03-23 2019-09-26 三菱電機株式会社 Détecteur de déraillement destiné à un ascenseur
JPWO2019180910A1 (ja) * 2018-03-23 2020-09-03 三菱電機株式会社 エレベータの脱レール検出装置

Similar Documents

Publication Publication Date Title
EP2722300B1 (fr) Dispositif de sécurité pour ascenseur
TWI710514B (zh) 自推進電梯和電梯制動系統
EP2421784B1 (fr) Agencement de sécurité d'un ascenseur
US9776828B2 (en) Device for the position detection of an elevator car and method for operating an elevator system
CN108349691B (zh) 具有安全配置的升降机和用于在升降机井道的上部部分中建立安全工作空间的方法
CN108217360B (zh) 电梯安全系统和操作电梯系统的方法
US9809420B2 (en) Compensatory measure for low overhead or low pit elevator
US10894695B2 (en) Device and method for actuating an elevator safety brake
US20130192932A1 (en) Elevator safety system and method
US20130118836A1 (en) Elevator with safety device
CN111099469B (zh) 电梯系统
US9580273B2 (en) Testing apparatus and safety arrangement
KR20110107862A (ko) 엘리베이터 장치 및 그 검사 방법
US20070000734A1 (en) Elevator arrangement
CN104150316A (zh) 一种防止电梯轿厢异常移动的装置
WO2014188051A1 (fr) Système de détection de déraillement d'ascenseur et système d'ascenseur le comprenant
JP2009542548A (ja) 位置検出装置、エレベータの位置検出装置、及びエレベータ装置
US20190039859A1 (en) Elevator brake monitoring and control
JP6697793B2 (ja) エレベータの釣合おもりの脱レール検出装置
EP2999658B1 (fr) Procédé et système de test pour tester la défaillance d'un frein de mécanisme d'un ascenseur
CN106276467A (zh) 电梯轿厢意外移动保护装置
CN102765645B (zh) 电梯异常运行的监测保护装置
CN103282298B (zh) 电梯的终端层强制减速装置
WO2013025185A1 (fr) Détection et surveillance d'accès à la cuvette inférieure
CN209940225U (zh) 电梯轿厢意外移动保护装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13884977

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13884977

Country of ref document: EP

Kind code of ref document: A1