EP1481934B1 - Ascenseur - Google Patents

Ascenseur Download PDF

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Publication number
EP1481934B1
EP1481934B1 EP02702765A EP02702765A EP1481934B1 EP 1481934 B1 EP1481934 B1 EP 1481934B1 EP 02702765 A EP02702765 A EP 02702765A EP 02702765 A EP02702765 A EP 02702765A EP 1481934 B1 EP1481934 B1 EP 1481934B1
Authority
EP
European Patent Office
Prior art keywords
car
counterweight
suspension
guide rails
rope
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
EP02702765A
Other languages
German (de)
English (en)
Other versions
EP1481934A1 (fr
EP1481934A4 (fr
Inventor
Masami; c/o Mitsubishi Denki K. K. NOMURA
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 EP1481934A1 publication Critical patent/EP1481934A1/fr
Publication of EP1481934A4 publication Critical patent/EP1481934A4/fr
Application granted granted Critical
Publication of EP1481934B1 publication Critical patent/EP1481934B1/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
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides
    • B66B7/023—Mounting means therefor
    • B66B7/027—Mounting means therefor for mounting auxiliary devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0035—Arrangement of driving gear, e.g. location or support
    • B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0065—Roping
    • B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • B66B11/009—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave with separate traction and suspension ropes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides

Definitions

  • the invention relates to an elevator system, and more particularly, to the configuration of a rope-type elevator.
  • Fig. 6 is a schematic view showing the construction of a conventional elevator.
  • Fig. 7 is a schematic view showing a cross section of the elevator taken along line I-I' shown in Fig. 6 .
  • Reference numeral 121 designates a drive rope which engages with the counterweight 102 and drives the car 101 and the counterweight 102; 105, 106 designate drive sheaves for driving the drive rope 121; 107, 108 designate overhead sheaves attached to top and bottom of the counterweight, respectively; and 109 designates a weight for generating tension in the drive rope 121.
  • One end of the drive rope 121 is anchored an upper portion of a hoistway 100, and the other end of the drive rope 121 is connected to the apparatus 109 for generating tension in the drive rope 121.
  • the drive sheaves 105, 106 are rotationally driven, to thereby take up or let out the drive rope 121.
  • the counterweight 102 is caused to ascend or descend by way of overhead sheaves 107, 108.
  • the car moves up or down within a space inside of hoistway walls 125 by way of the suspension rope 120 that suspends at one end thereof the counterweight 102 and at the other end thereof the car 101.
  • the suspension rope 120 and the drive rope 121 are separated from each other.
  • a one-to-one rope arrangement is applied to the suspension-sides of the ropes, and a two-to-one rope arrangement is applied to drive-sides of the ropes, thereby attempting to miniaturize a traction machine.
  • Fig. 8 is a plan view of the hoistway, showing a plane configuration of the elevator system shown in Figs. 6 and 7 .
  • reference numeral 110 designates a guide rail attached to the rail bracket.
  • the counterweight 102 is arranged on the side of the car 101 when viewed from an elevator hall where a hall door mechanism 123 is provided.
  • the direction in which the suspension rope 120 is arranged by way of the suspension pulleys 103, 104 is at right angles to the longitudinal direction of the counterweight 102.
  • the drive sheave 105 and the counterweight 102 are arranged in parallel to each other in the longitudinal direction.
  • Fig. 9 is a perspective view showing a car frame constituting the car 101.
  • An ordinary elevator car room is attached to a car frame such as that shown in Fig. 9 .
  • the car frame is primarily constituted of longitudinal pillars 131, an upper beam 132, and a car floor 133.
  • a rail guide (not shown) is fastened to each of the longitudinal pillars 131 for moving the car 101 smoothly along the guide rails 110.
  • the rail brackets 124 to be used for retaining the guide rails 110 over the hoistway walls 125 must be attached to the side of the car 101.
  • the counterweight 102 must be disposed so as to avoid the rail brackets 124.
  • a position at which the car 101 is to be suspended (a point of suspension: a point C in Fig. 8 ) deviates from a line interconnecting the guide rails 110; that is, a position deviating from the upper beam 132 of the car frame.
  • the structure of the car 101 in order to suspend the car at a position deviating from the upper beam 132 serving as a structural member of the car 101, the structure of the car 101 must be made special for transmitting the weight of the car 101 to the point of suspension C from the upper beam 132.
  • the longitudinal pillars 131 of the car frame become offset from the centroid of the car 101.
  • an emergency stopper (not shown) usually attached to the longitudinal pillars 131 is actuated, a large moment acts on the guide rails 110, because the point of action deviates from the centroid of the car 101.
  • countermeasures such as an increase in the size of the guide rails 110, must be taken.
  • the upper beam 132 is arranged so as to coincide with the centroid of the car 101, the position where the car 101 is suspended (i.e., the point of suspension C) becomes deviated from the centroid of the car 101.
  • the moment stemming from the weight of the car 101 acts on the guide rails 110 at all times, thereby causing a problem of deterioration of ride comfort.
  • the size of the guide rails 110 must be increased.
  • suspension pulleys 103, 104 must be attached to the ceiling of the hoistway.
  • the ceiling of the hoistway is usually designed by a designer of a building.
  • a manufacturer of the elevator system must take prior complicated procedures, such as issuing a request that the designer of the building design the layout of a beam which undergoes the load of a suspension pulley.
  • the suspension pulleys 103, 104 are arranged in a projected plane of the car 101. Hence, the suspension pulleys 103, 104 are arranged so as to overlap the car 101 when viewed in the plane. For this reason, when a service engineer performs a maintenance operation on the car 101, the suspension pulleys 103, 104 interfere with the service engineer, thereby deteriorating ease of work.
  • the invention aims at providing an elevator system which stably drives a car and achieves improved ease of maintenance or the like by suspending a car at an optimum position.
  • An elevator system according to the preamble of claim 1 is known e.g. from WO-A-9943600 .
  • An elevator system of the invention has a car; a counterweight ; a rope for connecting the car to the counterweight ; suspension pulleys which suspend the rope and the car and the counterweight ; a pair of first guide rails which extend in a traveling direction of the car and oppose each other by way of the car ; a pair of second guide rails which extend in a moving direction of the counterweight and oppose each other by way of the counterweight; a first beam for connecting upper ends of the pair of first guide rails ; a second beam for connecting upper ends of the pair of second guide rails; and a third beam for connecting a neighborhood of a midpoint of the first beam to a neighborhood of amidpoint of the second beam.
  • the suspension pulleys are attached to the third beam .
  • a third beam is attached to the neighborhood of a midpoint of a first beam, and a suspension pulley for lowering a rope toward a car can be arranged at a position above the centroid of the car. Further, the third beam is attached to the neighborhood of a midpoint of a second beam.
  • a suspension pulley for lowering a suspension rope toward a counterweight can be arranged at a position above the centroid of the counterweight. Accordingly, the car and the counterweight can be suspended by a rope at their respective centroids. As a result, the weight of the car and that of the counterweight can be exerted on the first and second guide rails.
  • An elevator system of the invention wherein a handrail is provided on an upper surface of the car along an area where an overlap exists between the car and the suspension pulleys.
  • a handrail is provided so as to surround a plane of the suspension pulleys projected on the car, whereby the service engineer is prevented from entering a space below the suspension pulleys, thus improving ease of work.
  • Figs. 1 and 2 are schematic views showing an elevator system according to a first embodiment of the invention.
  • Fig. 1 is a perspective view of the elevator system
  • Fig. 2 shows a plan view of the same.
  • reference numeral 1 designates a car (not shown in Fig.
  • reference numeral 20 designates a suspension rope suspended on the suspension pulleys, wherein one end of the suspension rope is connected to an upper portion of the car 1 and the other end of the same is connected to an upper portion of the counterweight 2.
  • Reference numeral 21 designates a drive rope, wherein one end of the rope is secured on an upper portion of a hoistway and the other end of the same is fastened to a lower portion of the hoistway.
  • Reference numeral 30 designates a hoistway, and the foregoing members are provided within the hoistway 30.
  • a car frame constituting the car 1 is formed in the same manner as that described in connection with Fig. 9 .
  • Longitudinal pillars 131 of the car frame are provided with rail guides (not shown) for moving the car 1 smoothly along the guide rails 10.
  • an emergency stopper (not shown) is also attached to the neighborhood of the longitudinal pillars 131 for stopping descending action of the car 1 by engaging with the guide rails in the event of an anomaly.
  • the suspension rope 20 goes downward after having passed from the suspension pulley 4 to the suspension pulley 3.
  • the suspension rope is connected to a center of the upper beam 32 provided on an upper surface of the car 1; that is, an essential position of the centroid of the car 1.
  • the suspension pulley 3 from which the suspension rope 20 goes downward to the car 1 can be arranged at a position above the centroid of the car 1.
  • the size of the guide rails 10 can be suppressed to the required minimum size, and manufacturing costs can be reduced.
  • the suspension pulley 4 for lowering the suspension rope 20 toward the counterweight 2 can be placed at a position above the centroid of the counterweight 2.
  • the weight exerted by way of the beam 14 suspended by the suspension pulleys 3, 4 is uniformly applied to the two guide rails 11, thereby enhancing the stability of the car when driven.
  • the centroid of the car is placed at an essential center of the car 1 sandwiched between the guide rails 10, whereby no unbalanced load is exerted on the guide rails 10.
  • the ride comfort of the car 1 during traveling can be enhanced.
  • the positions where the suspension pulleys 3, 4 are suspended are determined by only the positions of the guide rails 10 and 11, and no load is exerted on the building. Therefore, coordination with the designer of the building about the position of the beam on which the suspension pulleys 3, 4 are to be secured becomes obviated. Consequently, the elevator manufacturer can solely design an elevator system and execute construction of the elevator system, thereby increasing the degree of freedom of layout design of the elevator.
  • FIGs. 3 and 4 By reference to Figs. 3 and 4 , an elevator system according to a second embodiment of the invention will now be described.
  • constituent elements identical with those of the first embodiment are assigned the same reference numerals.
  • Figs. 3 and 4 omit illustration of drive-side instruments.
  • the second embodiment involves a handrail 15 which is arranged on the upper surface of the car 1 so as to surround the projected surface of the suspension pulleys 3, 4 on the car 1.
  • reference numeral 32 designates an upper beam of a car frame; and 31 designates longitudinal pillars of the car frame.
  • Reference numeral 22 designates a door mechanism provided at the entrance/exit of the car 1; and 23 designates a door mechanism of a hall provided opposite the door mechanism 22.
  • the service engineer is hindered from entering a space below the suspension pulleys 3, 4 when performing work on the car 1. Accordingly, even when the car 1 is situated at the neighborhood of the topmost location, the suspension pulleys 3, 4 do not impose restrictions on the work of the maintenance engineer, thereby improving the ease of work to a much greater extent.
  • FIG. 5 is a plan view showing the elevator system of the third embodiment.
  • the counterweight 2 is disposed at a position opposite the entrance/exit of the car 1.
  • the beam 14 is suspended between the substantial center of the beam 12 and the substantial center of the beam 13. Even when the counterweight 2 is situated at the position opposite the entrance/exit of the car 1, the weight of the car 1 and that of the counterweight 2 exerted by way of the suspension pulleys 3, 4 are transmitted from the beam 14 to the beam 12, whereby the weights of the car and the counterweight can be uniformly exerted on the two guide rails 10.
  • the suspension pulley 4 for lowering the suspension rope 20 toward the counterweight 2 can be arranged at a position above the centroid of the counterweight 2.
  • the weight of the counterweight 2 can also be uniformly imposed on the guide rails 11.
  • the beam 14 on which the suspension pulleys 3, 4 are secured is always attached to the car 1 and a substantial center of the beam suspended between the guide rails 11 of the counterweight 2.
  • the guide rails 11 undergo the load, thereby obviating a necessity for provision of a new beam on the building and coordination with the designer of the building.
  • the load of the car 1 can be suspended in the vicinity of the centroid of the car 1.
  • an elevator system of the invention enables suspension of centroid of a car with a rope.
  • the elevator system can be useful for a variety of elevators or lifts as a elevator system which achieves enhanced stability when in operation.

Landscapes

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

Abstract

L'invention concerne un ascenseur comprenant une cabine (1), un contrepoids (2), un câble (20) reliant la cabine (1) au contrepoids (2), des poulies (3, 4) portant le câble (20) et suspendant la cabine (1) et le contrepoids (2), deux premiers rails-guides (10) s'étendant dans le sens du déplacement de la cabine (1) tout en se regardant à travers la cabine (1), deux seconds rails-guides (11) s'étendant dans le sens du déplacement du contrepoids (2) tout en se regardant à travers le contrepoids (2), une première poutre (12) reliant l'extrémité supérieure des deux premiers rails-guides (10), une deuxième poutre (13) reliant l'extrémité supérieure des deux seconds rails-guides, et une troisième poutre (14) reliant le milieu de la première poutre (12) à celui de la deuxième poutre (13), les poulies (3, 4) étant fixées à la troisième poutre (14).

Claims (2)

  1. Système d'ascenseur comprenant :
    une cabine (1) ;
    un contrepoids (2) ;
    un câble de suspension (20) pour relier la cabine (1) et le contrepoids (2) ;
    des poulies de suspension (3, 4) qui suspendent le câble de suspension (20) et la cabine (1) et le contrepoids (2) ;
    une poulie de machine de traction (5) disposée dans une cage d'ascenseur (30) ;
    un câble d'entraînement (21) enroulé sur la poulie de machine de traction (5) pour faire monter ou descendre la cabine (1) et le contrepoids (2) reliés par le câble de suspension (20) ; et.
    le système d'ascenseur comprenant en outre :
    une paire de premiers rails de guidage (10) qui s'étendent dans une direction de parcours de la cabine (1) et opposées l'une à l'autre de part et d'autre de la cabine (1) ;
    une paire de seconds rails de guidage (11) qui s'étendent dans une direction de déplacement du contrepoids (2) et opposées l'une à l'autre de part et d'autre du contrepoids (2) ;
    caractérisé en ce que le système d'ascenseur comprend :
    une première poutrelle (12) pour relier les extrémités supérieures de la paire de premiers rails de guidage (10) ;
    une deuxième poutrelle (13) pour relier les extrémités supérieures de la paire de seconds rails de guidage (11) ; et
    une troisième poutrelle (14) pour relier un voisinage d'un milieu de la première poutrelle (12) à un voisinage d'un milieu de la deuxième poutrelle (13), dans lequel
    les poulies de suspension (3, 4) sont attachées à la troisième poutrelle (14).
  2. Système d'ascenseur selon la revendication 1, dans lequel une rampe (15) est prévue sur une surface supérieure de la cabine (1) le long d'une zone où un chevauchement existe entre la cabine (1) et les poulies de suspension (3, 4).
EP02702765A 2002-03-06 2002-03-06 Ascenseur Expired - Lifetime EP1481934B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/002081 WO2003074408A1 (fr) 2002-03-06 2002-03-06 Ascenseur

Publications (3)

Publication Number Publication Date
EP1481934A1 EP1481934A1 (fr) 2004-12-01
EP1481934A4 EP1481934A4 (fr) 2010-04-21
EP1481934B1 true EP1481934B1 (fr) 2011-05-04

Family

ID=27773235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02702765A Expired - Lifetime EP1481934B1 (fr) 2002-03-06 2002-03-06 Ascenseur

Country Status (5)

Country Link
EP (1) EP1481934B1 (fr)
JP (1) JPWO2003074408A1 (fr)
CN (1) CN1248949C (fr)
DE (1) DE60239963D1 (fr)
WO (1) WO2003074408A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1717184B1 (fr) * 2004-02-16 2011-07-13 Mitsubishi Denki Kabushiki Kaisha Ascenseur
EP3168181B1 (fr) * 2014-07-07 2019-11-13 Mac Puar, S.A. Système de traction ayant des dimensions réduites pour des ascenseurs

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2504135Y2 (ja) * 1991-01-17 1996-07-10 三菱電機株式会社 エレベ―タ昇降路装置
WO1998029326A1 (fr) * 1996-12-30 1998-07-09 Kone Corporation Dispositif de cable d'ascenseur
JP4255525B2 (ja) * 1997-11-05 2009-04-15 東芝エレベータ株式会社 エレベーター
ES2285850T3 (es) * 1998-02-26 2007-11-16 Otis Elevator Company Sistema de ascensor que tiene el motor de accionamiento situado en la parte inferior de la caja de ascensor.
JP2001048422A (ja) * 1999-08-12 2001-02-20 Toray Eng Co Ltd 巻取機
JP4404999B2 (ja) * 1999-08-16 2010-01-27 三菱電機株式会社 エレベータ装置
JP2001058774A (ja) * 1999-08-18 2001-03-06 Hitachi Building Systems Co Ltd エレベータ
JP2002179354A (ja) * 2000-12-14 2002-06-26 Nippon Unpan Kikai Co Ltd エレベータ装置

Also Published As

Publication number Publication date
CN1507409A (zh) 2004-06-23
JPWO2003074408A1 (ja) 2005-06-23
DE60239963D1 (de) 2011-06-16
CN1248949C (zh) 2006-04-05
EP1481934A1 (fr) 2004-12-01
EP1481934A4 (fr) 2010-04-21
WO2003074408A1 (fr) 2003-09-12

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