EP1710191B1 - Système d'ascenseur - Google Patents

Système d'ascenseur Download PDF

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Publication number
EP1710191B1
EP1710191B1 EP04706793A EP04706793A EP1710191B1 EP 1710191 B1 EP1710191 B1 EP 1710191B1 EP 04706793 A EP04706793 A EP 04706793A EP 04706793 A EP04706793 A EP 04706793A EP 1710191 B1 EP1710191 B1 EP 1710191B1
Authority
EP
European Patent Office
Prior art keywords
car
working platform
hoistway
elevator apparatus
cover
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 - Fee Related
Application number
EP04706793A
Other languages
German (de)
English (en)
Japanese (ja)
Other versions
EP1710191A1 (fr
EP1710191A4 (fr
Inventor
Atsushi Mitsubishi Denki Kabushiki Kaisha MITSUI
Shiroh Mitsubishi Denki Kabushiki Kaisha IKEDA
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1710191A1 publication Critical patent/EP1710191A1/fr
Publication of EP1710191A4 publication Critical patent/EP1710191A4/fr
Application granted granted Critical
Publication of EP1710191B1 publication Critical patent/EP1710191B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel

Definitions

  • the present invention relates to an elevator apparatus in which hoistway equipment requiring maintenance and inspection work is provided at an upper portion in a hoistway.
  • JP 2001 253658 A discloses a work floor for maintenance that is provided near a driving device and short ladders that are advanceably and retreatably engaged with each other.
  • JP 2001 097649 A discloses an elevator apparatus having a part of a hoisting device that is placed in a fitting condition in a recessed part projecting from a part of a plain of the ceiling of an elevator shaft and supported on a securing part placed at the upper end of the elevator shaft, and a main rope is wound around the hoisting device.
  • a driving machine is provided in a machine room provided in a hoistway.
  • the machine room is provided directly above a counterweight in the hoistway.
  • the floor level of the machine room is provided at substantially the same height as the landing floor of the highest floor where a car can stop.
  • the range in which a counterweight is allowed to be raised and lowered is restricted by the machine room, and thus the vertical dimension of the counterweight must be made small as much as possible.
  • the horizontal sectional area of the counterweight must be increased, making it necessary to increase the horizontal sectional area of the hoistway as well.
  • the present invention has been made to overcome the above-described problem, and it is therefore an object of the present invention to provide an elevator apparatus capable of enhancing the ease of maintenance and inspection work while achieving saving of the space in the hoistway.
  • Fig. 1 is a side view showing an elevator apparatus (machine room-less elevator) according to Embodiment 1 of the present invention
  • Fig. 2 is a sectional view taken along the line II-II of Fig. 1 .
  • a hoistway 1 provided in a hoistway 1 are a pair of guide rails 2 and a pair of counterweight guide rails 3 (not shown in Fig. 1 ).
  • a car 4 is raised and lowered in the hoistway 1 as it is guided by the car guide rails 2.
  • a counterweight 5 is raised and lowered in the hoistway 1 as it is guided by the counterweight guide rails 3.
  • a counterweight 5 is arranged rearward of the car 4 with respect to the depth direction of the hoistway 1.
  • a car-side buffer (not shown) that receives the car 4
  • a counterweight-side buffer 6 that receives the counterweight 5.
  • a pair of support beams 7 are fixed to an upper portion (top portion) of the hoistway 1.
  • the support beams 7 are arranged in parallel in the width direction of the car 4 (the width direction of a landing entrance 8).
  • a machine platform 9 is bridged over the support beams 7.
  • the driving machine 10 has a driving machine main body 11 including a motor and a brake, and a drive sheave 12 that is rotated by the driving machine main body 11.
  • the rotation shaft of the drive sheave 12 is supported at its both ends. Further, the rotation shaft of the drive sheave 12 is in parallel to the width direction of the car 4 and extends horizontally.
  • the driving machine 10 is arranged so as to overlap the car 4 within the vertical projection plane. That is, the driving machine 10 is arranged directly above the car 4.
  • a rotatable deflector sheave 13 Supported to the machine platform 9 is a rotatable deflector sheave 13 as hoistway equipment.
  • the rotation shaft of the deflector sheave 13 is parallel to the rotation shaft of the drive sheave 12.
  • a plurality of main ropes 14 are wound around the drive sheave 12 and the deflector sheave 13.
  • Each main rope 14 has a first end portion 14a connected to an upper beam 4a of the car 4, and a second end portion 14b connected to an upper portion of the counterweight 5.
  • the car 4 and the counterweight 5 are suspended by the main rope 14 in the hoistway 1 by means of a 1:1 roping system.
  • a working platform 15 on which a worker stands while performing maintenance and inspection work on the driving machine 10.
  • the working platform 15 is arranged so as to avoid interference with the car 4 when the car 4 moves to the uppermost movement position in the hoistway 1 and to partially overlap the car 4 within the vertical projection plane.
  • the working platform 15 is arranged at a position where it does not collide with the upper beam 4a of the car 4 or equipment (door device and the like) on the top of the car 4 when the car 4 is lifted upward as the counterweight 5 collides with the counterweight-side buffer 6. Specifically, the working platform 15 is arranged at one rear side corner portion with respect to the front-to-rear direction of the hoistway 1.
  • the working platform 15 has a pair of fixing beams 16 fixed between the pair of support beams 7, a floor portion fixed on the fixing beams 16, and a handrail 18 fixed on the floor portion 17.
  • the fixing beams 16 are arranged in parallel in the depth direction of the car 4.
  • the floor portion 17 is provided with an escape hatch 17a, and a cover 19 for opening and closing the escape hatch 17a.
  • the floor portion 17 is provided with a cover detecting switch 19a that detects opening of the cover 19.
  • the operation of the driving machine 10 is controlled by a control device (control panel) 20.
  • the control device 20 is arranged in an upper or lower portion of the hoistway 1, for example.
  • a signal from the cover detecting switch 19a is input to the control device 20.
  • the control device 20 disables movement of the car 4 while the cover 19 is open.
  • the car 4 is moved to the upper portion of the hoistway 1, and then the worker moves from the top of the car 4 onto the working platform 15, whereby the worker can perform maintenance and inspection work on the driving machine 10 or deflector sheave 13.
  • the working platform 15 is arranged so as to avoid interference with the car 4 and the counterweight 5, whereby the vertical dimension of the counterweight 5 is not restricted by the working platform 15, making it possible to prevent the horizontal sectional area of the hoistway 1 from increasing due to the counterweight 5. That is, it is possible to realize saving of the space in the hoistway 1.
  • the floor portion 17 can be extended beyond the region of the car 4 within the vertical projection plane, whereby a large working space can be secured as compared with the case where maintenance and inspection work is performed on the top of the car 4, thereby making it possible to improve the ease of maintenance and inspection work.
  • the worker can move to the top of the car 4 through the escape hatch 17a, and then move into the interior of the car 4 through a rescue hatch provided in the ceiling of the car 4 or move to the top of an adjacent elevator car.
  • the cover detecting switch 19a is provided in the floor portion 17 and the movement of the car 4 is disabled while the cover 19 is open, whereby it is possible to more reliably prevent the car 4 from moving during egress through the escape hatch 17a.
  • Fig. 3 is a side view showing an elevator apparatus according to Embodiment 2 of the present invention
  • Fig. 4 is a sectional view taken along the line IV-IV of Fig. 3 . While in Embodiment 1 the driving machine 10 is mounted on the machine platform 9, the driving machine 10 is fixed under the machine platform 9 in Embodiment 2.
  • a car-side return pulley 21 and a counterweight-side return pulley 22 are mounted to the machine platform 9 as hoistway equipment for reversing the direction of the main rope 14, which extends from the drive sheave 12, and introducing the main rope 14 to the car 4 and the counterweight 5, respectively.
  • the load exerted from the main rope 14 to the drive sheave 12 thus acts upwardly.
  • Embodiment 2 is of the same construction as Embodiment 1. Accordingly, the working platform 15 is arranged so as to avoid interference with the car 4 when the car 4 moves to the uppermost movement position in the hoistway 1 and to partially overlap the car 4 within the vertical projection plane.
  • Such a construction facilitates movement of the worker from the top of the car 4 onto the working platform 15 even in the case where the driving machine 10 and the return pulleys 21, 22 occupy a large area relative to the ceiling surface area of the car 4.
  • Fig. 5 is a horizontal sectional view of an elevator apparatus according to Embodiment 3 of the present invention.
  • the working platform 15 is provided with an openable/closable entrance door 23 that is opened during access to the top of the working platform 15. When closed, the entrance door 23 functions as a part of the handrail 18.
  • Embodiment 3 is of the same construction as Embodiment 1.
  • the car 4 does not move during access to and egress from the working platform 15 with the entrance door 23 open, whereby access to and egress from the working platform 15 can be made in a stable manner.
  • the hoistway equipment is not limited to those.
  • the working platform of the present invention may be provided in the hoistway when hoistway equipment, including a control panel, a speed governor, and return pulleys, is arranged at an upper portion in the hoistway and maintenance and inspection work is required for the hoistway equipment.
  • the present invention is applicable to an elevator apparatus employing another roping system, such as a 2:1 roping system.
  • the driving machine 10 is arranged such that the rotation shaft of the drive sheave 12 becomes horizontal, it is also possible to arrange the drive sheave such that the rotation shaft of the drive sheave becomes vertical or substantially vertical. It is to be noted, however, that the driving machine is preferably arranged such that a part that is likely to require maintenance and inspection work, such as the brake, is located on the working platform side. In other words, it is preferable that the working platform be arranged near a part that frequently requires maintenance and inspection work.

Landscapes

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

Abstract

Système de levage dans lequel les composants de l’arbre nécessitant des travaux de maintenance/d’inspection sont disposés dans la partie supérieure de l’arbre de levage. Dans la partie supérieure de l’arbre de levage est disposée une plate-forme d’accès servant d’échafaudage pour l’exécution de travaux de maintenance/d’inspection des composants de l’arbre. La plate-forme d’accès est disposée de façon à éviter les interférences avec la voiture lorsque la voiture est en position haute par rapport à l’arbre, et à recouvrir la voiture dans le plan de projection vertical.

Claims (6)

  1. Appareil formant ascenseur comprenant :
    un équipement de cage d'ascenseur (10, 13, 21, 22)étant disposé sur une plate-forme de machine (9) qui est agencée au niveau d'une partie supérieure dans une cage d'ascenseur (1) ;
    une cabine (4) qui est élevée et abaissée dans la cage d'ascenseur (1) ; et
    une plate-forme de travail (15) est agencée au niveau de la partie supérieure dans la cage d'ascenseur (1), et à une position où elle n'entre pas en collision avec une poutrelle supérieure de la cabine ou un équipement sur le dessus de la cabine quand la cabine est soulevée vers le haut,
    dans lequel la plate-forme de travail (15) est agencée de sorte que la plate-forme de travail (15) évite une interférence avec la cabine (4) lorsque la cabine (4) se déplace jusqu'à une position de déplacement supérieure dans la cage d'ascenseur (1) et de sorte que la plate-forme de travail (15) chevauche la cabine (4) à l'intérieur d'un plan de projection vertical, caractérisé en ce que
    la plate-forme de travail (15) a une partie formant plancher (17) munie d'une issue de secours (17a), et d'une trappe (19) pour ouvrir et fermer l'issue de secours (17a).
  2. Appareil formant ascenseur selon la revendication 1, dans lequel l'équipement de cage d'ascenseur (10, 13, 21, 22) est une machine d'entraînement (10) pour élever et abaisser la cabine (4).
  3. Appareil formant ascenseur selon la revendication 1, dans lequel la plate-forme de travail (15) est agencée de sorte que la plate-forme de travail (15) chevauche partiellement la cabine (4) dans le plan de projection vertical.
  4. Appareil formant ascenseur selon la revendication 3, comprenant en outre un commutateur de détection de trappe (19a) pour détecter l'ouverture de la trappe (19), et un dispositif de commande (20) pour commander l'opération de la machine d'entraînement (10) selon un signal en provenance du commutateur de détection de trappe (19a), le dispositif de commande (20) étant conçu pour désactiver un déplacement de la cabine (4) tandis que la trappe (19) est ouverte.
  5. Appareil formant ascenseur selon la revendication 1, dans lequel la plate-forme de travail (15) a une porte d'entrée (23) qui est ouverte pendant l'accès sur la plate-forme de travail (15).
  6. Appareil formant ascenseur selon la revendication 5, comprenant en outre un commutateur de détection de porte (24) pour détecter l'ouverture de la porte d'entrée (23), et un dispositif de commande (20) pour commander l'opération de la machine d'entraînement (10) selon un signal en provenance du commutateur de détection de porte (24), le dispositif de commande (20) étant conçu pour désactiver un déplacement de la cabine (4) tandis que la porte d'entrée (23) est ouverte.
EP04706793A 2004-01-30 2004-01-30 Système d'ascenseur Expired - Fee Related EP1710191B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/000894 WO2005073120A1 (fr) 2004-01-30 2004-01-30 Systeme de levage

Publications (3)

Publication Number Publication Date
EP1710191A1 EP1710191A1 (fr) 2006-10-11
EP1710191A4 EP1710191A4 (fr) 2009-09-30
EP1710191B1 true EP1710191B1 (fr) 2011-10-26

Family

ID=34816553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04706793A Expired - Fee Related EP1710191B1 (fr) 2004-01-30 2004-01-30 Système d'ascenseur

Country Status (4)

Country Link
EP (1) EP1710191B1 (fr)
JP (1) JPWO2005073120A1 (fr)
CN (1) CN100522782C (fr)
WO (1) WO2005073120A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2782072B1 (fr) * 1998-08-06 2000-09-22 Otis Elevator Co Dispositif et procede pour le deplacement d'une machinerie le long d'une gaine d'ascenseur au cours de la construction d'un immeuble
JP2000238971A (ja) 1999-02-19 2000-09-05 Hitachi Building Systems Co Ltd エレベータ装置
EP1050505B1 (fr) * 1999-05-07 2004-08-04 Inventio Ag Equipement pour effectuer des travaux dans une cage d'ascenseur
JP2001048437A (ja) * 1999-08-17 2001-02-20 Hitachi Building Systems Co Ltd エレベータ
JP2001097649A (ja) 1999-09-29 2001-04-10 Mitsubishi Electric Corp エレベーター装置
JP4454765B2 (ja) 2000-03-09 2010-04-21 三菱電機株式会社 エレベータ
EP1346942B1 (fr) * 2000-12-28 2008-08-27 Mitsubishi Denki Kabushiki Kaisha Dispositif rampe superieure de cabine d'ascenseur
JP4091326B2 (ja) * 2002-03-27 2008-05-28 三菱電機ビルテクノサービス株式会社 エレベーター装置

Also Published As

Publication number Publication date
EP1710191A1 (fr) 2006-10-11
CN1723167A (zh) 2006-01-18
EP1710191A4 (fr) 2009-09-30
CN100522782C (zh) 2009-08-05
JPWO2005073120A1 (ja) 2007-08-23
WO2005073120A1 (fr) 2005-08-11

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