WO2006035264A1 - Dispositif d'arret de surete d'une cabine d'ascenseur - Google Patents

Dispositif d'arret de surete d'une cabine d'ascenseur Download PDF

Info

Publication number
WO2006035264A1
WO2006035264A1 PCT/IB2004/003216 IB2004003216W WO2006035264A1 WO 2006035264 A1 WO2006035264 A1 WO 2006035264A1 IB 2004003216 W IB2004003216 W IB 2004003216W WO 2006035264 A1 WO2006035264 A1 WO 2006035264A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
safety
car
per
fork
Prior art date
Application number
PCT/IB2004/003216
Other languages
English (en)
Inventor
Gérard Sirigu
Dominique Goulet
Pascal Rebillard
Nicolas Fonteneau
Julien Dos Reis
Olivier Dukacz
Jean-Noël CLOUX
Bernard Picquenot
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/IB2004/003216 priority Critical patent/WO2006035264A1/fr
Priority to EP04769540A priority patent/EP1799602A1/fr
Priority to CNA2004800440896A priority patent/CN101027239A/zh
Priority to JP2007534102A priority patent/JP4664370B2/ja
Publication of WO2006035264A1 publication Critical patent/WO2006035264A1/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
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/46—Adaptations of switches or switchgear
    • B66B1/48—Adaptations of mechanically-operated limit switches
    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B66B5/0056—Safety of maintenance personnel by preventing crushing
    • B66B5/0068—Safety of maintenance personnel by preventing crushing by activating the safety brakes when the elevator car exceeds a certain upper or lower position in the elevator shaft
    • 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
    • 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

Definitions

  • This invention relates to a device for the safety stop of an elevator car, particularly in elevators without machine room, and an elevator equipped therewith.
  • Elevators with no machine room and a reduced space at the top, and possibly at the bottom, of the shaft are known to require additional measures to maintain a safety space above the car, particularly for maintenance technicians working on the cabin roof.
  • mechanical car arresting devices comprising a device with a rod that is manually extended towards a stop at a defined height, limiting a safety space for the maintenance technician on the cabin roof.
  • this type of device produces high and harmful abutment stresses on the elevator structure.
  • This invention aims at correcting these disadvantages and proposes a device for the safety stop of an elevator car, particularly in elevators without machine room and with a small free space at the top and/or bottom of the shaft in normal operation, characterized in that it includes at least one box mounted relative to the shaft and level with the speed limiting cable of the car overspeed safety device and provided with an articulated fork element that has an end adapted to engage at least one attachment element tied to said speed limiting cable of the car overspeed safety device in the service position of the device to arrest the cable and thus cause a safety stop of the elevator car, and to be disengaged from said attachment element in the inactive position, wherein said fork element in the service position and the cable attachment element are located at an appropriate height in combination with each other in the elevator shaft for the engagement of the attachment element with the fork element to cause the arrest of the elevator car at an adequate height in the shaft to leave at least a safety space for the operator on the cabin roof or in the shaft bottom.
  • Said attachment element is advantageously shaped as an olive, but any rigid element forming a protrusion that can engage the end of the fork element may be appropriate.
  • Said box may be mounted so as to slide vertically relative to the shaft on a small height, being returned by a spring at a reference height in the shaft; however, the fork element is advantageously mounted so as to slide vertically in the box, e.g. on two vertical posts, to be returned by a spring at a reference height, in order to compensate for the differences in the stopping distance of the car and thus of the speed limiting cable attached thereto.
  • This sliding height of the box or of the supporting element of the fork element is slightly greater than the longest safety stopping distance of the car.
  • the safety space for the operator on the cabin roof takes this longer stopping distance of the car into account.
  • the height of the safety space in the shaft corresponds to the height of engagement of the attachment element on the cable with the fork element plus the longest car stopping distance.
  • the service position of the device is obtained as soon as the operator accesses the cabin roof, either by directly actuating an activation switch to inspect the elevator or automatically as soon as a landing door opens, using a safety service switch embedded in the lock thereof or activated when the door opens.
  • Said fork element is a longitudinal plate that can be e.g. rectangular and is hinged with a motor drive in the plane of the box, having a slit end, preferably flared outwards, to receive said speed limiting cable with a small clearance and engage with said attachment element.
  • Said box comprises a vertical passage for the speed limiting cable formed by an appropriate cutout in its construction walls.
  • Said fork element is brought into the service position by an electromagnet with an adequate power supply to move the fork element towards the limiting cable and receive it at its end shaped as a fork or a flared slot and disengage it in the inactive position of the device.
  • Said fork element is advantageously hinged with a back mass opposite the fork end relative to its articulation axis, so that in operation, it comes into a natural engagement position with the speed limiting cable in a horizontal position, abutting on the actuating element of the non-powered electromagnet, and is disengaged from the limiting cable in an inclined position when inactive, under the thrust of the actuating element of the electromagnet, which is powered by a switch located slightly downstream of the safety area, e.g. a limit switch for inspection, wherein said electromagnet is actuated in normal operation as the car comes into the safety area of the shaft.
  • the electromagnet does not have to be powered except during this upper safety course, the electromagnet can be operated and any blocking avoided, and the device naturally returns into the safety position in case of power failure.
  • the device may include other attachment elements, e.g. a second attachment element located slightly lower than the first one, with a greater safety distance from the cabin roof to the shaft ceiling, according to the provided standards, wherein the device has a double upper safety in this case.
  • the device may be fitted with at least one attachment element in a lower safety area of the shaft, at the bottom, to prevent an operator being crushed by the elevator car overspeed in the shaft bottom.
  • the invention also relates to an elevator equipped with a car safety stopping device as defined above.
  • Figure 1 is a schematic elevation view of an elevator equipped with a device according to the invention
  • Figure 2 shows the box of the device according to the invention in the inactive position
  • Figure 3 shows the box in the service position
  • Figure 4 shows the box when the elevator car is stopped, with its springs compressed.
  • the device involves the speed limiting cable 5 of the car overspeed safety device 7, which operates both during ascension and descent of the car.
  • each of the boxes 9, 9' is provided with a fork element 15, 15' hinged inside the box and in its plane.
  • This fork element 15, 15' is shaped as a rectangular plate and has a fork-shaped end 17 with an outward flaring slot turned towards the inside of the box.
  • This fork end is adapted to receive the speed limiting cable 5 with a clearance when the fork element is brought into the horizontal service position ( Figure 3) and to disengage therefrom when the fork element is driven into its tilted inactive position ( Figure 2) by a bottom electromagnet 19 mounted in the box.
  • the speed limiting cable 5 is provided with two olive-shaped attachment elements
  • each of the fork elements 15, 15' of the boxes is provided with a mass opposite the fork-shaped end 17, which naturally brings it into a horizontal position, abutting on an upper abutment element 27 with its fork-shaped end 17 and resting with its opposite end on the pusher element 29 of the bottom electromagnet 19.
  • Said electromagnet 19 when powered, pushes the fork element 15 into its tilted position with its pusher element 29 and drives it away from the speed limiting cable 5.
  • the fork element 15 and the electromagnet 19 are mounted on a support 31 that is mobile vertically, sliding along two lateral vertical posts 33 attached to the box. This support 31 is maintained in its low position with an elastic return by two identical helical springs 35 inserted over the upper part of a post 33, between the upper wall of the box and an appropriate fold of the support.
  • the sliding travel of the support 31 in the box is designed up to a maximum value of 50cm, which corresponds to the longest stopping distance of the speed limiting cable 5 by the safety device 7 and therefore of the elevator car 3 to which it is attached by a connecting lever 34.
  • the car travels at low speed (approximately 0.3m per second)
  • the car is stopped over a distance of about 2-3cm, with a short displacement of the support 31 in the box by the same distance, and thus a low compression of the return springs 35 ( Figure 4).
  • the speed limiting cable presents two said olives spaced apart from each other, one upper olive 23 controlling the stopping of the car with a minimum safety space of at least one meter in height between the car roof 37 and the shaft ceiling 4, and a lower olive 21 controlling the stopping of the car with a larger safety space, where the operator can stand upright on the cabin roof 37 and there is therefore a free height of about two meters between the car roof 37 and the shaft ceiling 4.
  • the upper safety stop control box 9 is arranged at a defined height in the shaft relative to said olives 21, 23 on the speed limiting cable 5, so that the stop control of the fork element 15 by each of the olives provides said safety spaces taking account of its sliding displacement in the box.
  • the lower box 9' operates in relation with the lower olive 21 as it is at an appropriate height in the shaft to provide a safety space for the operator at shaft bottom 6, with a height of e.g. 0.50m between the car bottom 39 and the shaft bottom 6.
  • Each of the upper 9 and lower 9' boxes operates in relation with an inspection limit switch, respectively an upper switch 41 mounted on the cabin roof and a lower switch 43 mounted on the cabin bottom 39.
  • the upper switch 41 comprises a mobile lever 45 with a lateral wheel attached to the cabin roof 37 and resting with a spring on a vertical longitudinal cam 47 attached to the elevator shaft.
  • the lever 45 resting on the cam 47 corresponds to the closed circuit position in which the electromagnet is powered in normal operation and tilts the fork element 15 to disengage it from the speed limiting cable 5.
  • the switch is not in contact with the cam 47, the circuit is open and the fork element 15 can then return to the horizontal service position of the device.
  • the lower switch 43 comprises a lower wheel lever 49 that cooperates with a lower vertical longitudinal cam 51 on the shaft to close the electromagnet circuit when resting on the cam and open it when not in contact.
  • the function of the boxes is also controlled by a main inspection switch actuated by the operator before inspection (not represented) and by a series of landing door opening safety switches in the elevator (not represented) that activate the safety device as soon as any landing door of the elevator is opened.
  • the switches can be mounted in series in the box control circuit.
  • the operation of the device shall now be described and easily understood on the basis of the description below.
  • the maintenance operator pushes the main inspection switch.
  • the safety device 1 is then activated, which deactivates the electromagnet 19 on each of the upper 9 and lower 9' boxes over the entire length of travel of the car 3, and the fork element 15 engages the speed limiting cable 5.
  • the car travels at low speed (approximately 0.3m/s).
  • the limit switch 41 or 43 opens the elevator control circuit and the car stops.
  • the safety device 1 is triggered only if this procedure is executed with an anomaly; if the car continues to move, e.g.
  • the fork element 15 of the upper box catches the lower olive 21 of the safety device cable to trigger that device and arrest the car at the first safety barrier of the device, thus providing a space about 2m high between the cabin roof 37 and the shaft ceiling 4. If the lower olive 21 is accidentally missed, the upper olive 23 is caught by the fork element 15 and ensures the second safety barrier to provide the minimum safety space for the operator.
  • the device 1 After the maintenance operation has been performed, and as soon as the main inspection switch is deactivated and all elevator landing doors are closed, the device 1 returns to normal elevator operation as described above, with the electromagnet 19 that drives the fork element 15 being powered only when the elevator car enters the upper and lower parts of the shaft.
  • the fork element in the device may also directly engage the lever of the overspeed safety device to arrest the elevator car.

Abstract

L'invention concerne un dispositif d'arrêt de sûreté (1) d'une cabine d'ascenseur (3), notamment dans des ascenseurs dépourvus de local de machinerie mais équipés d'un petit espace libre au sommet (4) et/ou au pied (6) de l'arbre pendant un fonctionnement normal. Ce dispositif est caractérisé en ce qu'il comprend au moins un boîtier (9, 9') monté par rapport à l'arbre au même niveau que le câble limiteur de vitesse (5) du régulateur de vitesse de la cabine et pourvu d'un élément en fourche articulé (15, 15') dont une extrémité est conçue pour venir en prise avec au moins un élément de fixation (21, 23) attaché au câble limiteur de vitesse (5) du régulateur de vitesse de la cabine (7) dans la position de service du dispositif afin d'arrêter le câble et, par conséquent, de provoquer l'arrêt de sûreté de la cabine d'ascenseur (3) et de se libérer dudit élément de fixation (21, 23),dans la position inactive. L'élément en fourche (15) en position de service et l'élément de fixation du câble (21, 23) sont situés à une hauteur appropriée et combinés l'un avec l'autre au niveau de l'arbre de l'ascenseur de façon que l'élément de fixation (21, 23) vienne en prise avec l'élément en fourche (15) afin de provoquer l'arrêt de la cabine d'ascenseur à une hauteur appropriée de l'arbre en laissant au moins un espace de sûreté pour l'opérateur sur le toit de cabine (37) ou au pied de l'arbre (6).
PCT/IB2004/003216 2004-09-29 2004-09-29 Dispositif d'arret de surete d'une cabine d'ascenseur WO2006035264A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/IB2004/003216 WO2006035264A1 (fr) 2004-09-29 2004-09-29 Dispositif d'arret de surete d'une cabine d'ascenseur
EP04769540A EP1799602A1 (fr) 2004-09-29 2004-09-29 Dispositif d'arret de surete d'une cabine d'ascenseur
CNA2004800440896A CN101027239A (zh) 2004-09-29 2004-09-29 用于电梯轿厢安全停止的装置
JP2007534102A JP4664370B2 (ja) 2004-09-29 2004-09-29 エレベータかごの安全停止装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2004/003216 WO2006035264A1 (fr) 2004-09-29 2004-09-29 Dispositif d'arret de surete d'une cabine d'ascenseur

Publications (1)

Publication Number Publication Date
WO2006035264A1 true WO2006035264A1 (fr) 2006-04-06

Family

ID=34958755

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2004/003216 WO2006035264A1 (fr) 2004-09-29 2004-09-29 Dispositif d'arret de surete d'une cabine d'ascenseur

Country Status (4)

Country Link
EP (1) EP1799602A1 (fr)
JP (1) JP4664370B2 (fr)
CN (1) CN101027239A (fr)
WO (1) WO2006035264A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7650969B2 (en) 2004-12-03 2010-01-26 Otis Elevator Company Safety device for use in an elevator system including a triggering member for activating a safety brake
CN101891090A (zh) * 2010-06-13 2010-11-24 上海东锐风电技术有限公司 风机塔筒专用升降梯的下限位、防撞装置
EP2297016A1 (fr) * 2008-06-30 2011-03-23 Kone Corporation Aménagement d ascenseur et procédé d entretien d ascenseur
CN102275793A (zh) * 2011-08-16 2011-12-14 湖南海诺电梯有限公司 一种电梯保护装置
US8136637B2 (en) 2006-06-30 2012-03-20 Otis Elevator Company Safety device for securing minimum spaces at the top or bottom of an elevator shaft being inspected, and elevator having such safety devices
US8162108B2 (en) 2006-06-30 2012-04-24 Otis Elevator Company Elevator having a limit switch for controlling power to the drive system as an elevator car approaches a shallow pit or a low overhead
CN102530660A (zh) * 2010-12-28 2012-07-04 株式会社日立制作所 电梯
EP2682360A1 (fr) * 2006-11-20 2014-01-08 Mitsubishi Electric Corporation Système élévateur
EP2727871A1 (fr) * 2012-10-30 2014-05-07 Kone Corporation Ascenseur et procédé
EP3153446A1 (fr) * 2015-10-09 2017-04-12 Kone Corporation Dispositif de sécurité d'ascenseur
EP3097036A4 (fr) * 2014-01-21 2017-12-13 Kone Corporation Ascenseur equipe d'un mecanisme de securite, et appareil de securite

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979298B (zh) * 2010-10-20 2013-03-13 日立电梯（中国）有限公司 电梯安全止停触发装置
CN102009891A (zh) * 2010-11-29 2011-04-13 江南嘉捷电梯股份有限公司 电梯安全保护系统
CN102849548A (zh) * 2012-06-20 2013-01-02 天津大学 超额定速度的电梯速度控制器及其控制方法
CN102795525A (zh) * 2012-08-03 2012-11-28 西继迅达（许昌）电梯有限公司 一种防冲顶电梯的制动装置及电梯系统
CN104684834B (zh) * 2012-09-25 2017-10-20 奥的斯电梯公司 低顶部或低底坑电梯的补偿措施
JP5642144B2 (ja) * 2012-12-12 2014-12-17 株式会社日立製作所 機械室レスエレベータ
CN103896124B (zh) * 2012-12-27 2016-07-06 北京升华电梯有限公司 多段速限速器装置
CN103496622B (zh) * 2013-09-09 2015-11-18 费传华 带有断绳保护装置的电梯
CN105035906A (zh) * 2015-08-21 2015-11-11 李宝 一种带有防坠落装置的垂直升降电梯
CN107187988B (zh) * 2017-06-30 2023-03-14 快意电梯股份有限公司 电梯制动装置及其提拉机构
CN115465756A (zh) * 2022-11-14 2022-12-13 南通新居美环保科技有限公司 多功能家用升降机

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GB197790A (en) * 1922-03-15 1923-05-24 Lyons & Co Ltd J Improvements in or relating to systems of control for lifts
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GB1444641A (en) * 1973-07-26 1976-08-04 Nissan Motor Throttle valve for automotive transmission control system
EP0985623A2 (fr) * 1998-09-07 2000-03-15 Kabushiki Kaisha Toshiba Dispositif d'arrêt d'urgence pour ascenseur

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JPS63288885A (ja) * 1987-05-22 1988-11-25 株式会社日立ビルシステムサービス エレベ−タの安全装置
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GB197790A (en) * 1922-03-15 1923-05-24 Lyons & Co Ltd J Improvements in or relating to systems of control for lifts
GB252122A (en) * 1925-05-13 1926-09-09 Waygood Otis Ltd Improvements in or relating to electric elevator systems
GB1444641A (en) * 1973-07-26 1976-08-04 Nissan Motor Throttle valve for automotive transmission control system
EP0985623A2 (fr) * 1998-09-07 2000-03-15 Kabushiki Kaisha Toshiba Dispositif d'arrêt d'urgence pour ascenseur

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7650969B2 (en) 2004-12-03 2010-01-26 Otis Elevator Company Safety device for use in an elevator system including a triggering member for activating a safety brake
US8365870B2 (en) 2006-06-30 2013-02-05 Otis Elevator Company Foldable handrail and safety switch arrangement on top of an elevator car
US8162108B2 (en) 2006-06-30 2012-04-24 Otis Elevator Company Elevator having a limit switch for controlling power to the drive system as an elevator car approaches a shallow pit or a low overhead
US8136637B2 (en) 2006-06-30 2012-03-20 Otis Elevator Company Safety device for securing minimum spaces at the top or bottom of an elevator shaft being inspected, and elevator having such safety devices
EP2682360A1 (fr) * 2006-11-20 2014-01-08 Mitsubishi Electric Corporation Système élévateur
EP2297016A4 (fr) * 2008-06-30 2014-07-02 Kone Corp Aménagement d ascenseur et procédé d entretien d ascenseur
EP2297016A1 (fr) * 2008-06-30 2011-03-23 Kone Corporation Aménagement d ascenseur et procédé d entretien d ascenseur
CN101891090B (zh) * 2010-06-13 2012-12-26 上海东锐风电技术有限公司 风机塔筒升降梯的下限位、防撞装置
CN101891090A (zh) * 2010-06-13 2010-11-24 上海东锐风电技术有限公司 风机塔筒专用升降梯的下限位、防撞装置
CN102530660A (zh) * 2010-12-28 2012-07-04 株式会社日立制作所 电梯
CN102275793A (zh) * 2011-08-16 2011-12-14 湖南海诺电梯有限公司 一种电梯保护装置
EP2727871A1 (fr) * 2012-10-30 2014-05-07 Kone Corporation Ascenseur et procédé
US9731936B2 (en) 2012-10-30 2017-08-15 Kone Corporation Elevator and a method
RU2658394C2 (ru) * 2012-10-30 2018-06-21 Коне Корпорейшн Лифт и способ создания безопасного пространства
EP3097036A4 (fr) * 2014-01-21 2017-12-13 Kone Corporation Ascenseur equipe d'un mecanisme de securite, et appareil de securite
US10294073B2 (en) 2014-01-21 2019-05-21 Kone Corporation Elevator provided with a safety apparatus arrangement, and a safety apparatus
EP3153446A1 (fr) * 2015-10-09 2017-04-12 Kone Corporation Dispositif de sécurité d'ascenseur

Also Published As

Publication number Publication date
JP2008514527A (ja) 2008-05-08
CN101027239A (zh) 2007-08-29
JP4664370B2 (ja) 2011-04-06
EP1799602A1 (fr) 2007-06-27

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