WO2006082460A1 - Dispositif de prevention de chute destine a empecher la chute d'un contrepoids d'ascenseur dans le cas ou ses elements de suspension rompent et contrepoids d'ascenseur dote de celui-ci - Google Patents

Dispositif de prevention de chute destine a empecher la chute d'un contrepoids d'ascenseur dans le cas ou ses elements de suspension rompent et contrepoids d'ascenseur dote de celui-ci Download PDF

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Publication number
WO2006082460A1
WO2006082460A1 PCT/IB2005/000273 IB2005000273W WO2006082460A1 WO 2006082460 A1 WO2006082460 A1 WO 2006082460A1 IB 2005000273 W IB2005000273 W IB 2005000273W WO 2006082460 A1 WO2006082460 A1 WO 2006082460A1
Authority
WO
WIPO (PCT)
Prior art keywords
counterweight
suspension
sheave block
axis
pulley axis
Prior art date
Application number
PCT/IB2005/000273
Other languages
English (en)
Inventor
Thomas Coquerelle
Fabrice Hamon
Original Assignee
Otis Elevator Company
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 Company filed Critical Otis Elevator Company
Priority to PCT/IB2005/000273 priority Critical patent/WO2006082460A1/fr
Publication of WO2006082460A1 publication Critical patent/WO2006082460A1/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
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/20—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of rotatable eccentrically-mounted members
    • 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
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed

Definitions

  • This invention relates to a fall prevention device aimed at preventing an elevator counterweight to fall if its suspension elements break and to an elevator counterweight equipped therewith.
  • Some elevator counterweights specially in elevators installed in buildings with underground car parks, are provided with a safety device preventing them to accidentally fall within the building structure.
  • This safety device is a speed limiter with an upper control pulley and a lower tensioning pulley mounted laterally in the elevator shaft, with a cable wrapped over said pulleys and attached to the counterweight.
  • Such a speed limiting system requires a considerable side space in the elevator shaft, which is hardly compatible with modern elevators with small shafts, and requires a long mounting time.
  • This invention aims at correcting these disadvantages and proposes a safety device for elevator counterweight comprising a framework with an upper crossbeam and a parachute device on its rail guides, wherein the upper crossbeam contains a suspension sheave block connected to the counterweight hanging cables or belts, wherein the device is characterized in that it uses a mechanism connected to the counterweight parachute device and to the counterweight suspension sheave block and integrated into the upper crossbeam of the counterweight frame, said mechanism being controlled to actuate said counterweight parachute device according to the axis pressure or suspension force of the axes of said pulleys in order to arrest the counterweight below a set pressure or suspension force threshold corresponding to a slackening or rupture of the counterweight suspension cables or belts.
  • the safety device operates according to the suspension force of the pulley axis in the counterweight suspension sheave block, wherein said pulley axis is mounted to move in vertical translation over a short distance on the sheave block and to be returned downwards by spring means countering the suspension force, between an upper position in normal service and a lower incident position, said mechanism being also connected to said pulley axis so that the downward travel of the pulley axis under its own weight and under the action of the spring means at an abnormal suspension force controls the mechanism to actuate the counterweight parachute device and arrest the counterweight.
  • the spring means are set so that the sum of the downward spring thrust and the pulley axis weight is lower than the upward suspension force of the suspension elements exerted on the counterweight pulley axis, and is noticeably higher than the latter in case of slackening or rupture of the suspension elements, so as to control a fast displacement of the pulley axis and therefore of the counterweight parachute device in case of a malfunction of the suspension elements (belts or cables).
  • Said pulley axis can be mounted integral with a trolley element mounted to slide vertically on the sheave block between said upper normal service position and said lower incident position.
  • the pulley axis can be mounted to slide directly on the sheave block with its ends in two corresponding opposite elongated openings in the sheave block.
  • Said mechanism is a simple rod linkage type motion return mechanism arranged inside the upper counterweight cross-beam and converting the vertical displacement of the pulley axis or of the trolley into a control motion to actuate the counterweight parachute device.
  • the invention also relates to a counterweight provided with a safety device as described above.
  • Figure 1 is a perspective view of a fall prevention device for counterweights as per the invention embodiment mounted inside the upper cross-beam of a counterweight frame, in the normal service position;
  • Figure 2 is a partial enlarged view of Figure 1 , in which the pulley axis of the suspension sheave block is displaced into the lower incident position;
  • Figure 3 shows the assembly of the pulley axis inside the sheave block
  • Figure 4 is a side view of the sheave block with the pulley axis in the normal operating position
  • Figure 5 is a view similar to Figure 4 with the pulley axis in the lower incident position.
  • the fall prevention device for counterweights as per the invention is fitted on an elevator counterweight 1 with parachute devices 3 on its lateral posts 5 cooperating with its guide rails 7.
  • the device as represented by Figures 1 and 2 in particular is assembled inside the upper crossbeam 9 of the counterweight frame. It involves the counterweight suspension sheave block 1 1 , which is attached in the middle of the upper counterweight crossbeam 9 (or slightly offset) and accommodates the counterweight hanging belts 13 by its pulleys.
  • This device includes two main elements comprising a device for the vertically sliding assembly of the axis 15 of the sheave block 1 1 pulleys and a motion-transmitting device 17 to transmit the sliding displacement of the axis 15 to the parachute device 3.
  • the sliding mounting device is such that the axis 15 of the pulleys is mounted to slide ( Figure 3) in the sheave block 11 with its ends 19 accommodated in two opposing elongated holes 21 in side plates 22 of the sheave block body.
  • the assembly is symmetrical relative to the middle plane of the sheave block.
  • Each end of the axis 15 accommodates a protection ring 23 resting on the elongated hole 21.
  • the axis 15 is mounted on two intermediate side parts 25 with which it is held integral at each end.
  • These lateral parts 25 are rectangular plastic blocks mounted to slide vertically on the sheave block, each at a small distance from said side plates 22.
  • These blocks 25 slide each on two vertical metal rods 27 attached to the upper flat 29 of the sheave block and passing through two corresponding bored holes in the block 25 with a small clearance.
  • These rods 27 each accommodate in their upper part a helical spring 31 applied in tension against said upper flat 29 and against the base of the plastic block 25, thus pushing the block 25 back downwards until the axis abuts on the lower end of the elongated openings 21.
  • the axis 15 is held locked in rotation and translation at each end by a key part 33 attached laterally outside of the block 25 and engaging an end groove of the axis beyond the protection ring 23 accommodated in the opening 21.
  • This key part 33 has an outer protruding element, e.g. simply a screw 35 ( Figure 4), attached at its lower part and offset vertically relative to the axis 15.
  • This protruding element 35 rests against the end of a lever 37 of a cross-bar 39, which is mounted at the lower part of the upper crossbeam 9 of the counterweight frame, between the sheave block 1 1 and the guide rail 7, on either side of the sheave block.
  • This bar 39 controls the actuation of the parachute device 3 when its lever 37 is turned downwards ( Figure 5).
  • it is mounted so that its lever 37 is returned upwards against said protruding element 35 of the key part, e.g. by a spring element 41 mounted appropriately on the parachute device.
  • the assembly is designed with a symmetry plane in the middle of the counterweight.
  • the two side bars 39 controlling the parachute devices on the guide rails 7 may be replaced by one bar arranged transversally between the parachute devices (not represented) and actuated by either one of the sliding blocks 25 of the sheave block.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

L'invention concerne un dispositif de prévention de chute pour un contrepoids (1) d'ascenseur comprenant un cadre présentant une poutre transversale supérieure (9) ainsi qu'un dispositif parachute (3) sur ses guides rails (7), dans lequel la poutre transversale supérieure (9) contient un bloc poulies de suspension (11) relié aux câbles ou courroies (13) de suspension du contrepoids, caractérisé en ce qu'il utilise un mécanisme relié au dispositif parachute (3) du contrepoids et au bloc poulies de suspension (11) du contrepoids et intégré dans la poutre transversale supérieure (9) du cadre du contrepoids, ledit mécanisme étant commandé pour actionner ledit dispositif parachute (3) du contrepoids selon la force de pression ou de suspension des axes desdites poulies de manière à arrêter le contrepoids (1) au-dessous d'un seuil défini de pression ou de force de suspension sur l'axe (15) correspondant à un relâchement ou une rupture des câbles ou des courroies de suspension du contrepoids.
PCT/IB2005/000273 2005-02-03 2005-02-03 Dispositif de prevention de chute destine a empecher la chute d'un contrepoids d'ascenseur dans le cas ou ses elements de suspension rompent et contrepoids d'ascenseur dote de celui-ci WO2006082460A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2005/000273 WO2006082460A1 (fr) 2005-02-03 2005-02-03 Dispositif de prevention de chute destine a empecher la chute d'un contrepoids d'ascenseur dans le cas ou ses elements de suspension rompent et contrepoids d'ascenseur dote de celui-ci

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2005/000273 WO2006082460A1 (fr) 2005-02-03 2005-02-03 Dispositif de prevention de chute destine a empecher la chute d'un contrepoids d'ascenseur dans le cas ou ses elements de suspension rompent et contrepoids d'ascenseur dote de celui-ci

Publications (1)

Publication Number Publication Date
WO2006082460A1 true WO2006082460A1 (fr) 2006-08-10

Family

ID=34960209

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/000273 WO2006082460A1 (fr) 2005-02-03 2005-02-03 Dispositif de prevention de chute destine a empecher la chute d'un contrepoids d'ascenseur dans le cas ou ses elements de suspension rompent et contrepoids d'ascenseur dote de celui-ci

Country Status (1)

Country Link
WO (1) WO2006082460A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010072657A1 (fr) * 2008-12-26 2010-07-01 Inventio Ag Contre-poids dans un système d'ascenseur
WO2010121944A1 (fr) 2009-04-20 2010-10-28 Inventio Ag Surveillance de l'état de fonctionnement de moyens porteurs dans une installation d'ascenseur
EP2376361A1 (fr) * 2009-01-15 2011-10-19 Kone Corporation Ascenseur
CN106927331A (zh) * 2017-04-13 2017-07-07 台州市中奥特种设备检测技术服务有限公司 一种用于升降机改造的限速防坠装置
WO2018073134A1 (fr) * 2016-10-19 2018-04-26 Aip Aps Systèmes d'ascenseur
CN107986202A (zh) * 2017-12-28 2018-05-04 山东豪迈机械制造有限公司 一种防坠装置、防坠机构及升降设备
EP3670416A1 (fr) * 2018-12-20 2020-06-24 Otis Elevator Company Frein de sécurité pour un contrepoids activé par une couche de traction
CN113086822A (zh) * 2019-12-23 2021-07-09 奥的斯电梯公司 对重移交测试装置和方法
EP3878792A1 (fr) * 2020-03-09 2021-09-15 KONE Corporation Cadre de contrepoids, ascenseur et procédé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453451A (en) * 1977-10-06 1979-04-26 Toshiba Corp Emergency elevator cage stopping device
US5495919A (en) * 1994-04-25 1996-03-05 Otis Elevator Company Safety brake apparatus for an elevator car or counterweight
FR2832139A1 (fr) * 2001-11-13 2003-05-16 Otis Elevator Co Installation de contrepoids parachute pour ascenseur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453451A (en) * 1977-10-06 1979-04-26 Toshiba Corp Emergency elevator cage stopping device
US5495919A (en) * 1994-04-25 1996-03-05 Otis Elevator Company Safety brake apparatus for an elevator car or counterweight
FR2832139A1 (fr) * 2001-11-13 2003-05-16 Otis Elevator Co Installation de contrepoids parachute pour ascenseur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 003, no. 076 (M - 064) 29 June 1979 (1979-06-29) *

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102264626A (zh) * 2008-12-26 2011-11-30 因温特奥股份公司 电梯设备中的对重
US8668054B2 (en) 2008-12-26 2014-03-11 Inventio Ag Counterweight in an elevator installation
WO2010072657A1 (fr) * 2008-12-26 2010-07-01 Inventio Ag Contre-poids dans un système d'ascenseur
EP2376361A1 (fr) * 2009-01-15 2011-10-19 Kone Corporation Ascenseur
EP2376361A4 (fr) * 2009-01-15 2014-11-05 Kone Corp Ascenseur
WO2010121944A1 (fr) 2009-04-20 2010-10-28 Inventio Ag Surveillance de l'état de fonctionnement de moyens porteurs dans une installation d'ascenseur
CN102405182A (zh) * 2009-04-20 2012-04-04 因温特奥股份公司 电梯设备中的承载机构的运行状态监控装置
US8857571B2 (en) 2009-04-20 2014-10-14 Inventio Ag Operating state monitoring of support apparatus of an elevator system
WO2018073134A1 (fr) * 2016-10-19 2018-04-26 Aip Aps Systèmes d'ascenseur
CN106927331B (zh) * 2017-04-13 2022-10-28 台州市特种设备检验检测研究院 一种用于升降机改造的限速防坠装置
CN106927331A (zh) * 2017-04-13 2017-07-07 台州市中奥特种设备检测技术服务有限公司 一种用于升降机改造的限速防坠装置
CN107986202A (zh) * 2017-12-28 2018-05-04 山东豪迈机械制造有限公司 一种防坠装置、防坠机构及升降设备
CN111348518A (zh) * 2018-12-20 2020-06-30 奥的斯电梯公司 电梯安全促动器系统
CN111348518B (zh) * 2018-12-20 2021-07-23 奥的斯电梯公司 电梯安全促动器系统
US11261056B2 (en) 2018-12-20 2022-03-01 Otis Elevator Company Elevator safety actuator systems
EP3670416A1 (fr) * 2018-12-20 2020-06-24 Otis Elevator Company Frein de sécurité pour un contrepoids activé par une couche de traction
CN113086822A (zh) * 2019-12-23 2021-07-09 奥的斯电梯公司 对重移交测试装置和方法
CN113086822B (zh) * 2019-12-23 2023-10-03 奥的斯电梯公司 对重移交测试装置和方法
US11866298B2 (en) * 2019-12-23 2024-01-09 Otis Elevator Company Counterweight handover test device and method
EP3878792A1 (fr) * 2020-03-09 2021-09-15 KONE Corporation Cadre de contrepoids, ascenseur et procédé

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