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EP1524234B1 - Système d'ascenseur - Google Patents

Système d'ascenseur Download PDF

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Publication number
EP1524234B1
EP1524234B1 EP03023216A EP03023216A EP1524234B1 EP 1524234 B1 EP1524234 B1 EP 1524234B1 EP 03023216 A EP03023216 A EP 03023216A EP 03023216 A EP03023216 A EP 03023216A EP 1524234 B1 EP1524234 B1 EP 1524234B1
Authority
EP
European Patent Office
Prior art keywords
elevator
elevator system
guard member
cabin
retracted position
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.)
Expired - Lifetime
Application number
EP03023216A
Other languages
German (de)
English (en)
Other versions
EP1524234A1 (fr
Inventor
Hartmut Liebig
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.)
LM Liftmaterial GmbH
Original Assignee
LM Liftmaterial GmbH
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
Priority to PT03023216T priority Critical patent/PT1524234E/pt
Priority to EP03023216A priority patent/EP1524234B1/fr
Priority to AT03023216T priority patent/ATE340756T1/de
Priority to ES03023216T priority patent/ES2272873T3/es
Priority to DE60308684T priority patent/DE60308684T2/de
Application filed by LM Liftmaterial GmbH filed Critical LM Liftmaterial GmbH
Priority to DK03023216T priority patent/DK1524234T3/da
Priority to PCT/EP2004/010881 priority patent/WO2005040030A1/fr
Publication of EP1524234A1 publication Critical patent/EP1524234A1/fr
Application granted granted Critical
Publication of EP1524234B1 publication Critical patent/EP1524234B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
    • B66B13/28—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between car or cage and wells
    • B66B13/285—Toe guards or apron devices

Definitions

  • the present invention relates to an elevator system comprising an elevator cabin for travelling up and down a hoistway, and a guard member mounted to a bottom part of the elevator cabin.
  • guard members In order to protect persons from falling into the hoistway under such circumstances, so-called guard members have been proposed which a installed on the bottom of the elevator cabin and close the above-mentioned gap.
  • US 6,095,288 discloses a pit-less elevator with an elevator cabin having a toe guard generally being in an open position but being retracted when the elevator cabin is in its lowest position.
  • DE 101 15 990 C1 discloses an elevator system in which the guard member is generally in its retracted position and is extended only in case of emergency, breakdown or the like.
  • DE 101 15 990 C1 provides no solution how to return the guard member from its extended to its retracted position.
  • JP-A-05186171 discloses an elevator having a movable apron beneath the sill of the entrance of a cage which travels within an elevator shaft.
  • the elevator system comprises a mechanism for automatically returning the guard member to the retracted position, the mechanism being actuatable by means of a movement of the elevator cabin.
  • the guard member can be returned using a simple mechanism which is actuated by a conventional movement of the elevator cabin.
  • the elevator system allows a smooth operation of the elevator cabin and avoids wear of the guard member while providing a simple and reliable reset of the guard member from the extended into the retracted position.
  • the mechanism further comprises a first operation part connected to the guard member and a second, stationary operation part, the first and second operation parts being engageabel during the movement of the elevator cabin.
  • the first operation part comprises an arrangement of jointed levers as defined in claim 1.
  • the elevator system according to the present invention is appropriate for hoistways with or without so-called pits.
  • the dimensions of pits are more and more limited such that the space below the elevator cabin reduces.
  • the present invention proposes that the first and/or second operation parts are arranged outside a vertical projection at least of the bottom face of the elevator cabin.
  • the mechanism of the present invention does not require additional space below the elevator cabin such that the inventive elevator system can be applied to hoistways with small pits or even without pits.
  • the first operation part is partially located above a bottom face of the elevator cabin when the guard member is in its retracted position such that an interference of the mechanism with the pit of the hoistway is avoided.
  • pivot joint is located on or above a bottom face of the elevator cabin allowing the most compact construction possible.
  • the second operation part comprises at least one surface which is engageable with the first operation part and is curved and/or inclined with respect to the travelling direction of the elevator cabin.
  • the second operation part allows to transform the movement of the elevator cabin into a return movement of the guard member without requiring active components such as drive units and the like.
  • the retaining means comprises at least one electromagnet the actuation of which is controllable by the control means.
  • This construction allows that the guard member can be set from the retained into the extended position within a minimum time period while maintaining a simple construction. Further, the provision of a electromagnet supports the return movement of the guard member from the extended to the retracted position.
  • the retaining means comprises a detection means for detecting presence of the guard member in the rejected position. In this way, it can be guaranteed that a normal operation of the elevator system is maintained or initiated only if the guard member is in its retracted position so as to avoid accidents or collisions induced by the guard member.
  • the elevator system comprises at least one fixed elastic element located in the travelling path of the elevator cabin and contacting the guard member at least in the lowest position of the elevator cabin. Accordingly, it is one function of the at least one fixed elastic element to apply a pressing force on the guard member when the guard member is moved from its extended to its retracted position. As a result, the inventive mechanism needs to apply a smaller return force on the guard member leading to an even more simple and compact construction.
  • the elevator system further comprises emergency sensors detecting an emergency state and connected to the control means.
  • emergency sensors can be provided in at least one access door to the hoistway and detect whether or not the access door is being unlocked. An unlocking signal can then be transferred to the control means which, in turn, causes the guard member to be released and to move from the retracted position to the extended position.
  • the movement of the guard member from the retracted, generally horizontal position to the extended, generally vertical position can for instance be achieved by gravity.
  • the elevator system comprises a damping element connecting the guard member with the elevator cabin.
  • the elevator system comprises a drive unit which is mounted in the hoistway below or beside the elevator cabin and/or the control means.
  • the drive unit is easily accessible for the maintenance staff which also contributes to increased safety.
  • the safety properties of the inventive elevator system can be further increased by a control panel connected to the control means and mounted in an architrave and/or a wall of the hoistway.
  • This control panel is preferably connected to the control means and allows a remote control of the elevator system from the outside of the hoistway. Further, this arrangement improves the fire safety of the elevator system.
  • Fig. 1 shows a schematic side view of an elevator system 1 according to a preferred embodiment of the invention.
  • the elevator system 1 comprises an elevator cabin 10 travelling up and down a hoistway 2 which has several access doors 4.
  • the elevator cabin has a bottom part 14 on which a guard member 12 is mounted via a pivot joint 16.
  • Figs. 2 and 3 show schematic, partial front and side views, respectively, of the Fig. 1 embodiment.
  • the guard member 12 is movable between a retracted position (Fig. 2b, 3b) and an extended position (Fig. 2a, 3a).
  • the retracted position of the guard member 12 is essentially parallel to the bottom part 14 of the elevator cabin 10.
  • the retracted position generally is such a position of the guard member 12 that it does not disturb the normal operation of the elevator cabin 10 in the hoistway 2.
  • the extended position of the guard member 12 in the present embodiment is essentially parallel to the travelling direction of the elevator cabin, even though any other position suitable for protecting persons from falling into the hoistway 2 is also possible.
  • the elevator system 1 comprises at least one electromagnet 18 for releasably retaining the guard member 12 in the retracted position during normal operation of the elevator system.
  • electromagnet 18 for releasably retaining the guard member 12 in the retracted position during normal operation of the elevator system.
  • any other suitable means for releasably retaining the guard member in the retracted position can be used, even though means which are controllable by electric commands are preferred.
  • the retaining means 18 comprises a detection means, for example a switch or the like, for detecting presence of the guard member 12 in the retracted position.
  • the elevator system 1 has a mechanism 30 for automatically returning the guard member to the retracted position.
  • the details of the mechanism 30 are shown best in Figs. 2 to 4.
  • the mechanism 30 comprises a first operation part 32 which is formed by an arrangement of jointed levers. At least one of these levers comprises an end portion 36 which is provided with a roll 38. Further, the arrangement of levers which is best seen in Fig. 3a) connects the guard member 12 to the bottom part 14 of the elevator cabin.
  • the arrangement of levers 32 including the roll 38 is arranged outside a vertical projection of the bottom face (the lower surface of the bottom part 14) of the elevator cabin. Additionally, in the retracted position of the guard member 12, the roll 38 and a part of the lever arrangement 32 are located above the bottom face of the elevator cabin (Fig. 2b).
  • the mechanism 30 of the present invention comprises a second operation part 34, which is fixedly mounted in the hoistway 2.
  • the second operation part 34 of the present embodiment is illustrated in Fig. 4 and is formed by a rail which has a surface 34' which is inclined with respect to the travelling direction of the elevator cabin 10.
  • the first and second operation parts 32, 34 are arranged such that they are engageable with each other.
  • the elevator system comprises emergency sensors detecting an emergency state, for example emergency switches detecting whether or not at least one access door 4 to the hoistway is being unlocked.
  • the elevator system comprises a control means and a drive unit, both not shown, the control unit controlling the operation of the drive means and receiving detection data from the emergency detectors, the detection means for detecting presence of the guard member in a retracted position and the like.
  • the control means is connected to a control panel (not shown) which allows to enter commands to the control unit.
  • the control means detects the emergency and outputs a command to the retaining means 18 in order to release the guard member 12 from its retracted position.
  • the control means stops the supply of electric energy to the electromagnet 18 such that the guard member 12 is released.
  • the guard member 12 moves due to gravity from its horizontal, retracted position into its vertical, extended position where it may be locked or fixed by appropriate means.
  • the guard member 12 now is ready to keep persons from falling into the hoistway 2.
  • the elevator system 1 can be brought back into operation. This can be done by activating the operation of the elevator system via the control panel.
  • the control means initiates an process for returning the guard member 12 from its extended position to its retracted position before the elevator system returns into its normal operation.
  • the control means causes the drive mechanism to move the elevator cabin 10 into its lowest position inside the hoistway 2.
  • the roll 38 of the lever arrangement 32 comes into contact with the inclined surface 34' of the rail (second, stationary operation part) 34 (Fig. 4). Under continued downward movement of the elevator cabin, the roll 38 moves along the inclined surface 34' such that the lever arrangement 32 rotates which, in turn, causes a rotation of the guard member 12 around its pivot joint 16.
  • Fig. 5 The sequence of this operation is illustrated in Fig. 5.
  • the continued downward movement of the elevator cabin 10 causes the roll 38 to move into a position above the bottom part 14 of the elevator cabin and, at the same time, a rotation of the guard member 12 from its extended position to its retracted position.
  • the electromagnet 18 exerts an attraction force on the guard member 12 such that the guard member 12 is fixed in its retracted position.
  • the detection means detects the presence of the guard member in the retracted position such that the control means may initiate the normal operation of the elevator system.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Claims (15)

  1. Système d'ascenseur (1), comprenant :
    une cabine d'ascenseur (10) pour monter et descendre une cage (2),
    un élément de garde (12) monté à une partie inférieure (14) de la cabine d'ascenseur (10) par l'intermédiaire d'une articulation pivot (16) et mobile entre une position rétractée et une position sortie,
    un moyen (18) pour retenir de manière libérable l'élément de garde (12) dans la position rétractée pendant le fonctionnement normal du système d'ascenseur (1),
    un moyen de commande capable de libérer l'élément de garde (12) de la position rétractée lors d'un fonctionnement d'urgence du système d'ascenseur (1),
    un mécanisme (30) pour renvoyer automatiquement l'élément de garde à la position rétractée, le mécanisme étant actionnable au moyen d'un déplacement de la cabine d'ascenseur (10),
    le mécanisme (30) comprenant une première pièce de manoeuvre (32) reliée à l'élément de-garde (12) et une seconde pièce de manoeuvre fixe (34), les première et seconde pièces de manoeuvre (32, 34) étant engageables au cours du déplacement de la cabine d'ascenseur (10),
    la première pièce de manoeuvre (32) comprenant une configuration de leviers articulés, un premier étant relié à la partie inférieure (14) de la cabine d'ascenseur, un second étant relié à la garde (12), les premier et second leviers étant reliés l'un à l'autre, et au moins l'un des premier et second leviers ayant une extrémité libre (36), l'extrémité libre comportant un rouleau (38).
  2. Système d'ascenseur selon la revendication 1, dans lequel les première et seconde pièces de manoeuvre (32, 34) sont adaptées à permettre un mouvement relatif entre l'une et l'autre.
  3. Système d'ascenseur selon la revendication 1 ou 2, dans lequel les première et/ou seconde pièces de manoeuvre (32, 34) est/sont placée(s) à l'extérieur d'une projection verticale au moins d'une face inférieure de la cabine d'ascenseur (10).
  4. Système d'ascenseur selon l'une quelconque des revendications 1 à 3 dans lequel la première pièce de manoeuvre (32) est au moins partiellement située au-dessus d'une face inférieure de la cabine d'ascenseur (10) lorsque l'élément de garde (12) est dans sa position rétractée.
  5. Système d'ascenseur selon l'une quelconque des revendications 1 à 4 dans lequel la seconde pièce de manoeuvre (34) comprend au moins une face (34') qui est engageable avec la première pièce de manoeuvre (32) et est incurvée et/ou inclinée par rapport à la direction de déplacement de la cabine d'ascenseur (10).
  6. Système d'ascenseur selon l'une quelconque des revendications précédentes, dans lequel le moyen de retenue (18) comprend au moins un électroaimant (18) dont l'actionnement est contrôlable par un moyen de commande.
  7. Système d'ascenseur selon l'une quelconque des revendications précédentes, dans lequel le moyen de retenue (18) comprend un moyen de détection pour détecter la présence de l'élément de garde (12) dans la position rétractée.
  8. Système d'ascenseur selon la revendication 7, dans lequel le moyen de détection communique avec le moyen de commande.
  9. Système d'ascenseur selon l'une quelconque des revendications précédentes, comprenant en outre au moins un élément élastique fixe (20) situé sur la trajectoire de la cabine d'ascenseur (10) et entrant au contact de l'élément de garde (12) au moins dans la position la plus basse de la cabine d'ascenseur (10).
  10. Système d'ascenseur selon l'une quelconque des revendications précédentes, dans lequel l'articulation pivot (16) est placée sur ou au-dessus d'une face inférieure de la cabine d'ascenseur (10).
  11. Système d'ascenseur selon l'une quelconque des revendications précédentes, comprenant en outre des capteurs d'urgence détectant un état d'urgence et reliés au moyen de commande.
  12. Système d'ascenseur selon la revendication 10, dans lequel les capteurs d'urgence détectent si au moins une porte d'accès (4) à la cage (2) est en cours de déverrouillage.
  13. Système d'ascenseur selon l'une quelconque des revendications précédentes, comprenant en outre une unité d'entraînement pour entraîner la cabine d'ascenseur (10) en haut et en bas de la cage (2), l'unité d'entraînement étant montée dans la cage (2) en dessous ou à côté de la cabine d'ascenseur (10) et/ou du moyen de commande.
  14. Système d'ascenseur selon l'une quelconque des revendications précédentes, comprenant en outre un panneau de commande relié au moyen de commande et monté dans une architrave et/ou une paroi de la cage (2).
  15. Système d'ascenseur selon l'une quelconque des revendications précédentes, comprenant en outre un élément amortisseur reliant l'élément de garde à la cabine d'ascenseur.
EP03023216A 2003-10-13 2003-10-13 Système d'ascenseur Expired - Lifetime EP1524234B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP03023216A EP1524234B1 (fr) 2003-10-13 2003-10-13 Système d'ascenseur
AT03023216T ATE340756T1 (de) 2003-10-13 2003-10-13 Aufzugssystem
ES03023216T ES2272873T3 (es) 2003-10-13 2003-10-13 Sistema de ascensor.
DE60308684T DE60308684T2 (de) 2003-10-13 2003-10-13 Aufzugssystem
PT03023216T PT1524234E (pt) 2003-10-13 2003-10-13 Sistema de elevador
DK03023216T DK1524234T3 (da) 2003-10-13 2003-10-13 Elevatorsystem
PCT/EP2004/010881 WO2005040030A1 (fr) 2003-10-13 2004-09-29 Systeme d'ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03023216A EP1524234B1 (fr) 2003-10-13 2003-10-13 Système d'ascenseur

Publications (2)

Publication Number Publication Date
EP1524234A1 EP1524234A1 (fr) 2005-04-20
EP1524234B1 true EP1524234B1 (fr) 2006-09-27

Family

ID=34354449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03023216A Expired - Lifetime EP1524234B1 (fr) 2003-10-13 2003-10-13 Système d'ascenseur

Country Status (7)

Country Link
EP (1) EP1524234B1 (fr)
AT (1) ATE340756T1 (fr)
DE (1) DE60308684T2 (fr)
DK (1) DK1524234T3 (fr)
ES (1) ES2272873T3 (fr)
PT (1) PT1524234E (fr)
WO (1) WO2005040030A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011051638U1 (de) 2011-10-14 2011-11-16 Aufzugteile Bt Gmbh Absturzschutz für Aufzugsanlagen

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005047498B3 (de) * 2005-10-04 2007-04-19 Wittur Ag Faltbare selbsthemmende Fahrkorbschürze
ITMI20062019A1 (it) * 2006-10-20 2008-04-21 Centiducati S P A Grembiule pieghevole di cabina per un impianto di ascensore
WO2010070378A1 (fr) 2008-12-19 2010-06-24 Otis Elevator Company Cadre de porte d'ascenseur avec boîtier électronique
JP5796124B2 (ja) 2011-03-22 2015-10-21 オーチス エレベータ カンパニーＯｔｉｓ Ｅｌｅｖａｔｏｒ Ｃｏｍｐａｎｙ エレベータ装置のトーガードアセンブリ
US9428365B2 (en) 2011-04-05 2016-08-30 Otis Elevator Company Toe guard assembly for an elevator system
FI20116040L (fi) * 2011-10-21 2013-04-22 Kone Corp Hissi
ITBO20130330A1 (it) * 2013-06-25 2014-12-26 Filippo Nicoli Paramento per cabina di ascensore
EP3599211B1 (fr) 2018-07-26 2020-09-09 Otis Elevator Company Tablier de cabine d'ascenseur
EP3608282B1 (fr) 2018-08-10 2022-06-22 Otis Elevator Company Tablier de cabine d'ascenseur
CN118515159A (zh) * 2023-02-17 2024-08-20 奥的斯电梯公司 电梯地坎间隙防护装置和电梯轿厢

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05186171A (ja) * 1992-01-08 1993-07-27 Toshiba Corp エレベータ
DE50105795D1 (de) * 2000-01-21 2005-05-12 Thyssenkrupp Aufzugswerke Gmbh Kabinenschürze für Aufzug
DE10115990C1 (de) * 2001-03-30 2002-10-10 Reinhard Muth Sicherheitssystem für einen Fahrstuhl

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011051638U1 (de) 2011-10-14 2011-11-16 Aufzugteile Bt Gmbh Absturzschutz für Aufzugsanlagen
EP2581334A1 (fr) 2011-10-14 2013-04-17 Aufzugteile BT GmbH Protection contre les chutes pour les ascenseurs

Also Published As

Publication number Publication date
EP1524234A1 (fr) 2005-04-20
DK1524234T3 (da) 2007-01-22
ES2272873T3 (es) 2007-05-01
ATE340756T1 (de) 2006-10-15
WO2005040030A1 (fr) 2005-05-06
DE60308684T2 (de) 2007-08-16
PT1524234E (pt) 2006-12-29
DE60308684D1 (de) 2006-11-09

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