EP1724229A1 - Appareil elevateur - Google Patents

Appareil elevateur Download PDF

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Publication number
EP1724229A1
EP1724229A1 EP04716021A EP04716021A EP1724229A1 EP 1724229 A1 EP1724229 A1 EP 1724229A1 EP 04716021 A EP04716021 A EP 04716021A EP 04716021 A EP04716021 A EP 04716021A EP 1724229 A1 EP1724229 A1 EP 1724229A1
Authority
EP
European Patent Office
Prior art keywords
car
drive machine
drive
elevator apparatus
counterweight
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.)
Withdrawn
Application number
EP04716021A
Other languages
German (de)
English (en)
Other versions
EP1724229A4 (fr
Inventor
Shuki Mitsubishi Denki Kabushiki Kaisha HAMAGUCHI
Atsushi Mitsubishi Denki Kabushiki Kaisha MITSUI
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 EP1724229A1 publication Critical patent/EP1724229A1/fr
Publication of EP1724229A4 publication Critical patent/EP1724229A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to an elevator apparatus in which a drive machine for raising and lowering a car is arranged in a hoistway.
  • a conventional elevator apparatus in which a hoisting machine is arranged at a lower portion of a hoistway is disclosed in, for example, JP 2001-192191 A .
  • a main rope for suspending a car and a counterweight is wound around a drive sheave of the hoisting machine
  • the main rope extends vertically upwards from the drive sheave, with the arc of contact of the main rope on the drive sheave being approximately 180 degrees.
  • the present invention has been made with a view to solving the above problems, and therefore it is an object of the invention to provide an elevator apparatus capable of achieving reduced size of a drive machine and extended life of a main rope.
  • an elevator apparatus comprising: a drive machine arranged in a hoistway and having a drive sheave; a main rope wound around the drive sheave; and a car and a counterweight that are suspended in the hoistway by the main rope and are raised and lowered by a drive force of the drive machine, wherein: the drive machine is arranged such that a rotation axis of the drive sheave is horizontal; an idle pulley around which the main rope is wound is provided in a vicinity of the drive machine; and an arc of contact of the main rope on the drive sheave is increased by the main rope being wound around the idle pulley.
  • Fig. 1 is a perspective view showing an elevator apparatus (machine room-less elevator apparatus) according to Embodiment 1 of the present invention
  • Fig. 2 is a plan view showing a main portion of the elevator apparatus of Fig. 1.
  • a pair of car guide rails 2a and 2b and a pair of counterweight guide rails 3a and 3b are disposed in a hoistway 1.
  • a car 4 is raised and lowered in the hoistway 1 while being guided by the car guide rails 2a and 2b.
  • a counterweight 5 is raised and lowered in the hoistway 1 while being guided by the counterweight guide rails 3a and 3b.
  • the counterweight 5 is arranged such that it is opposed to a side surface 4a of the car 4 when the counterweight 5 is located at the same height as the car 4 (counterweight side drop type).
  • a pair of car suspension sheaves 6a and 6b are mounted below the car 4.
  • a counterweight suspension sheave 7 is mounted above the counterweight 5.
  • a support member (mounting beam) 8 is fixed to the rear surface of the counterweight guide rail 3a.
  • a reinforcing diagonal member 9 is provided between the support member 8 and the counterweight guide rail 3a.
  • Vibration isolating members 10a and 10b are provided between the counterweight guide rail 3a, the diagonal member 9, and the support member 8. That is, the support member 8 is fixed to the counterweight guide rail 3a through the vibration isolating members 10a and 10b.
  • elastic members such as rubber plates can be used as the vibration members 10a and 10b.
  • a drive machine (hoisting machine) 11 for raising and lowering the car 4 and the counterweight 5 is mounted onto the underside of the support member 8.
  • the drive machine 11 has a drive machine main body 12 including a motor and a brake, and a drive sheave 13 that is rotated by the drive machine main body 12.
  • the drive machine 11 used is a thin hoisting machine whose axial dimension is smaller than the outside diameter dimension (the dimension in the direction at a right angle to the axial direction) of the drive sheave 13 or the drive machine main body 10.
  • the drive machine 11 is arranged at a position which is higher than the floor level of the car 4 when the car 4 stops at the lowest stop floor and which is lower than the ceiling of the car 4 when the car 4 stops at the highest stop floor. Specifically, in Embodiment 1, the drive machine 11 is arranged such that it is opposed to the side surface 4a of the car 4 when the car 4 stops at the lowest stop floor. Further, the drive machine 11 is arranged such that the rotation axis of the drive sheave 13 becomes horizontal and parallel (or substantially parallel) to the width direction of the car 4.
  • the drive machine 11 is arranged between the side surface 4a of the car 4 and a hoistway wall 1a so as to be in parallel to the hoistway wall 1a and the side surface 4a. Further, the drive machine main body 12 is arranged on the car 4 side, and the drive sheave 13 is arranged on the hoistway wall 1a side.
  • the drive machine 11 is arranged such that a part thereof protrudes toward the car 4 side beyond to the rear surface of the car guide rail 2b which is located on the same side as the drive machine 11 with respect to the car 4.
  • Wound around the drive sheave 13 are a plurality of main ropes 14 (only one of which is shown in Fig. 2) for suspending the car 4 and the counterweight 5.
  • an idle pulley 15 around which the main ropes 14 are wound.
  • the idle pulley 15 is mounted to a side surface of the support member 8 which is opposed to the hoistway wall 1a, the support member 8 being common to the idle pulley 15 and the drive machine 11.
  • the rotation axis of the idle pulley 15 is parallel to the rotation axis of the drive sheave 13. Further, the diameter of the idle pulley 15 is smaller than the diameter of the drive sheave 13. Furthermore, the idle pulley 15 is arranged so as to overlap the drive sheave 13 as seen in the vertical projection plane.
  • An upper support beam 16 is arranged at an upper portion (top portion) of the hoistway 1.
  • the upper support beam 16 is fixed to the car guide rail 2b and the counterweight guide rails 3a and 3b.
  • a car side return pulley 17 and a counterweight side return pulley 18 are mounted on top of the upper support beam 16.
  • the car side return pulley 17 is arranged so as to diagonally cross the drive machine main body 12 as seen in the vertical projection plane. That is, the car side return pulley 17 partially overlaps the drive machine 11 as seen in the vertical projection plane.
  • the counterweight side return pulley 18 is arranged between the counterweight suspension sheave 7 and the drive sheave 13.
  • the upper support beam 16 is provided with a counterweight side rope securing portion 19.
  • a rope securing beam 20 is fixed to the upper end portion of the car guide rail 3a.
  • the rope securing beam 20 is provided with a car side rope securing portion 21.
  • Each main rope 14 has a first end portion 14a connected to the car side rope securing portion 21, and a second end portion 14b connected to the counterweight side rope securing portion 19. Further, the main ropes 14 are wound around the car suspension sheaves 6a and 6b, the car side return pulley 17, the drive sheave 13, the idle pulley 15, the counterweight side return pulley 18, and the counterweight suspension sheave 7 in the stated order from the first end portion 14a side.
  • the car 4 and the counterweight 5 are suspended in the hoistway 1 by the main ropes 14 according to a 2:1 roping system.
  • the arc of contact of the main ropes 14 on the drive sheave 13 is increased by means of the idle pulley 15, whereby the traction force can be increased while suppressing an increase in the size of the drive sheave 13.
  • the drive machine 11 can be miniaturized, making it possible to achieve a reduction in cost and an increase in the freedom of layout.
  • a large traction force can be secured, whereby, as shown in Fig. 3, the width of undercut grooves 13b provided at the bottom of rope grooves 13a of the drive sheave 13 can be reduced. Further, it is also possible to omit the undercut grooves 13b if the traction force obtained is sufficient in strength. Accordingly, the contact surface area between the bottom surface of the rope grooves 13a and the main ropes 14 can be increased, thereby lessening the contact pressure between the main ropes 14 and the drive sheave 13 to be within a permissible value range. This enables extended life of the main ropes 14.
  • the arc of contact of the main ropes 14 on the drive sheave 13 is set to 230 to 280 degrees by means of the idle pulley 15, whereby an optimum traction force can be obtained.
  • the drive machine 11 is arranged at a position higher than the floor level of the car 4 when the car 4 stops at the lowest stop floor. Accordingly, even in the event that the pit (bottom portion) of the hoistway 1 should be flooded, the drive machine 11 is prevented from being exposed to water.
  • the drive machine 11 and the idle pulley 15 are supported by the common support member 8, whereby the number of parts can be reduced to achieve simplified construction and also the positional adjustment (centering) of the idle pulley 15 with respect to the drive sheave 13 can be facilitated. Further, the increased arc of contact enables the tension of the main ropes 14 acting on the drive sheave 13 and the idle pulley 15 to be absorbed within the support member 8, thereby making it possible to prevent a load from being placed on the counterweight guide rail 3a.
  • the drive machine 11 is mounted onto the underside of the support member 8 and the idle pulley 15 is mounted onto the side surface of the support member 8, whereby the drive machine 11 and the idle pulley 15 can be arranged efficiently in a compact manner.
  • the support member 8 is fixed to the counterweight guide rail 3a through the vibration isolating members 10a and 10b, whereby it is possible to prevent the vibration of the drive machine 11 or the idle pulley 15 from being transmitted to the building or the car 4 through the guide rail 3a.
  • the idle pulley 15 serves only to change the path of the main ropes 14, so the arc of contact of the main ropes 14 on the idle pulley 15 may be set small.
  • the diameter of the idle pulley 15 may be thus smaller than the diameter of the drive sheave 13, making it possible to suppress an increase in cost due to the provision of the idle pulley 15.
  • idle pulley and the drive machine may be mounted separately to different support members.
  • the idle pulley 15 is arranged between the drive sheave 13 and the counterweight side return pulley 18, the idle pulley 15 may be arranged between the drive sheave 13 and the car side return pulley 17. Further, two idle pulleys may be provided so that one return pulley is arranged both between the drive sheave and the car side return pulley, and between the drive sheave and the counterweight side return pulley.
  • the drivemachine 11 is arranged at a position higher than the floor level of the car 4 when the car 4 stops at the lowest stop floor
  • the drive machine 11 may be arranged at a position higher than the floor level of the first floor or reference floor (main entry floor).
  • Fig. 4 is a perspective view showing an elevator apparatus according to Embodiment 2 of the present invention
  • Fig. 5 is a plan view showing a main portion of the elevator apparatus of Fig. 4.
  • the counterweight 5 is arranged such that it is opposed to a rear surface 4b of the car 4 when the counterweight 5 is located at the same height as the car 4 (counterweight rear drop type).
  • the drive machine 11 is arranged by the side of the counterweight 5 as seen in the vertical projection plane. That is, as seen in the vertical projection plane, more than half the portion of the drive machine 11 is arranged between the rear surface 4b of the car 4 and the hoistway wall 1b so as to be in parallel to the hoistway wall 1b and the rear surface 4b.
  • the drive machine 11 is arranged such that the rotation axis of the drive sheave 13 becomes parallel to the depth direction of the car 4.
  • the support member 8 is fixed to the car guide rail 2b and the counterweight guide rail 3b.
  • the idle pulley 15 is mounted to the side surface of the support member 8 which is opposed to the hoistway wall 1b.
  • the upper support beam 16 is fixed to the upper end portions of the car guide rail 2b and counterweight guide rail 3a.
  • the support member 8 and the upper support beam 16 each have a substantially L-shaped configuration.
  • Embodiment 2 is of the same construction as Embodiment 1.
  • Fig. 6 is a perspective view showing an elevator apparatus according to Embodiment 3 of the present invention
  • Fig. 7 is a plan view showing a main portion of the elevator apparatus of Fig. 6.
  • Embodiment 3 as seen in the vertical projection plane, while the counterweight 5 is opposed to the rear surface 4b of the car 4, the drive machine 11 is opposed to the side surface 4a of the car 4.
  • the drive machine 11 is arranged between the side surface 4a of the car 4 and the drive machine main body 12 so as to be parallel (or substantially parallel) to the side surface 4a. Further, the drive sheave 13 is arranged on the car 4 side, and the drive machine main body 12 is arranged on the hoistway wall 1a side.
  • the drive machine 11 is arranged between the car guide rail 2b and the counterweight guide rail 3b. Furthermore, a part of the drive machine 11 is arranged so as to protrude beyond the rear surface of the car guide rail 2b, which is located on the same side as the drive machine 11 with respect to the car 4, toward the car 4.
  • the upper support beam 16 is fixed to the upper end portions of the car guide rail 2b and counterweight guide rail 3a and 3b.
  • the car side return pulley 17 is mounted below the upper support beam 16. Further, as seen in the vertical projection plane, the car side return pulley 17 is arranged between the side surface 4a of the car 4 and the drive machine main body 12 so as to be parallel or substantially parallel to the side surface 4a.
  • the counterweight side return pulley 18 is mounted below the upper support beam 16. Further, as seen in the vertical projection plane, the counterweight side return pulley 18 is arranged outside the region of the car 4 so as not to overlap the car 4.
  • the drive machine 11 and the counterweight 5 are arranged such that they are opposed to different surfaces of the car 4. Accordingly, the width dimension of the counterweight 5 can be enlarged to achieve a reduction in thickness dimension, and the drive machine 11 can be arranged in the space between the car guide rail 2b and the counterweight guide rail 3b, whereby the space within the hoistway 1 can be utilized more efficiently to achieve a reduction in the planar dimension of the hoistway 1.
  • Fig. 8 is a perspective view showing an elevator apparatus according to Embodiment 4 of the present invention.
  • the support member 8 to which the drive machine 11 and the idle pulley 15 are mounted is arranged in an upper portion of the hoistway 1. Further, the car side return pulley 17 and the counterweight side return pulley 18 are mounted on top of the support member 8. That is, the support member 8 also serves as the upper support beam.
  • the drive machine 11 is arranged at a position which is higher than the floor level, but lower than the ceiling, of the car 4 when the car 4 stops at the highest stop floor. That is, when the car 4 stops at the highest stop floor, the drive machine 11 is opposed to the side surface 4a of the car 4.
  • the drive machine main body 12 is arranged on the car 4 side, and the drive sheave 13 is arranged on the hoistway wall 1a side.
  • the idle pulley 15 is mounted to the side surface of the support member 8 opposed to the hoistway wall 1a.
  • Embodiment 4 is of the same construction as Embodiment 3.
  • the car return pulley 17, the counterweight side return pulley 18, the drive machine 11, and the idle pulley 15 are mounted to the common support member 8, whereby the positional adjustment (centering) can be easily performed on the car return pulley 17, the counterweight side return pulley 18, the drive sheave 13, and the idle pulley 15. Further, the number of parts can be reduced.
  • Fig. 9 is a perspective view showing an elevator apparatus according to Embodiment 5 of the present invention
  • Fig. 10 is a plan view showing a main portion of the elevator apparatus of Fig. 9.
  • the counterweight 5 is arranged such that it is opposed to the side surface 4a of the car 4 when the counterweight 5 is located at the same height as the car 4.
  • the support member 8 to which the drive machine 11 and the idle pulley 15 are mounted, is arranged at the top portion of the hoistway 1. Further, the support member 8 is fixed to the upper end portions of the car guide rail 2b and counterweight guide rails 3a and 3b through vibration isolating members (not shown).
  • the drive machine 11 is mounted on top of the support member 8. Further, the drive machine 11 partially overlaps the car 4 as seen in the vertical projection plane. Specifically, as seen in the vertical projection plane, a part of the drive machine main body 12 overlaps the car 4, and the drive sheave 13 is arranged outside the region of the car 4.
  • each of the drive machine 11 and the support member 8 is arranged at a height where it does not interfere with the car 4 even when the car 4 is lifted up as the counterweight 5 moves to the lowermost travel position in the hoistway 1.
  • the main ropes 14 extend downward from the drive sheave 13 and the idle pulley 15. That is, the main ropes 14 extend from the drive sheave 13 and the idle pulley 15 to the car suspension sheave 6b and the counterweight suspension sheave 7 without the intermediation of the idle pulley.
  • the return pulley is omitted, whereby the number of parts can be reduced to achieve a reduction in cost.
  • the orientation of the drive machine 11 may be reversed from that of Fig. 10 so that, as seen in the vertical projection plane, the drive machine 11 is arranged between the side surface 4a of the car 4 and the hoistway wall 1a.
  • Fig. 11 is a perspective view showing an elevator apparatus according to Embodiment 6 of the present invention
  • Fig. 12 is a plan view showing a main portion of the elevator apparatus of Fig. 11.
  • the counterweight 5 is arranged such that it is opposed to the rear surface 4a of the car 4 when the counterweight 5 is located at the same height as the car 4.
  • the support member 8 is arranged at the top portion of the hoistway 1.
  • the support member 8 is fixed to the upper end portions of the car guide rail 2b and counterweight guide rails 3a and 3b through vibration isolating members (not shown).
  • the drive machine 11 is disposed on top of the support member 8. Further, the drive machine 11 is arranged so as to partially overlap the car 4 as seen in the vertical projection plane.
  • the idle pulley 15 is mounted in the casing of the drive machine main body 12.
  • a deflector sheave 23 for introducing the main ropes 14 from the idle pulley 15 to the counterweight suspension sheave 7.
  • the deflector sheave 23 is arranged directly above the counterweight 5 so as to partially overlap the counterweight 5 as seen in the vertical projection plane.
  • the support member 8 is provided with a plurality of main rope passage holes 8a and 8b through which the main ropes 14 are passed.
  • the return pulley is omitted, whereby the number of parts can be reduced to achieve a reduction in cost.
  • the deflector sheave 23 is used, whereby an improvement can be achieved in terms of the freedom of layout of the counterweight 5.
  • vibration isolating members are provided between the support member and the guide rails
  • the vibration isolating members may be provided between the drive machine or idle pulley and the support member.
  • the support member, the upper support beam, the rope securing beam, and the like may be fixed directly or indirectly to a building.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP04716021A 2004-03-01 2004-03-01 Appareil elevateur Withdrawn EP1724229A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/002472 WO2005082767A1 (fr) 2004-03-01 2004-03-01 Appareil elevateur

Publications (2)

Publication Number Publication Date
EP1724229A1 true EP1724229A1 (fr) 2006-11-22
EP1724229A4 EP1724229A4 (fr) 2011-07-20

Family

ID=34897938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04716021A Withdrawn EP1724229A4 (fr) 2004-03-01 2004-03-01 Appareil elevateur

Country Status (4)

Country Link
EP (1) EP1724229A4 (fr)
JP (1) JPWO2005082767A1 (fr)
CN (1) CN1761608A (fr)
WO (1) WO2005082767A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102039055A (zh) * 2010-12-28 2011-05-04 深圳华强数码电影有限公司 三自由度程控威亚机械
EP3025999A1 (fr) * 2014-11-25 2016-06-01 KONE Corporation Agencement et procédé d'installation d'un cable d'ascenseur

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4802844B2 (ja) * 2006-04-25 2011-10-26 株式会社日立製作所 エレベーター装置
JP4774429B2 (ja) * 2008-09-12 2011-09-14 株式会社日立製作所 エレベーター装置
CN106115414A (zh) * 2016-08-31 2016-11-16 天津市奥瑞克电梯有限公司 新型无机房电梯布置
WO2020100306A1 (fr) * 2018-11-16 2020-05-22 三菱電機株式会社 Ascenseur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999016694A2 (fr) * 1997-10-01 1999-04-08 Wittur Aufzugteile Gmbh & Co. Cage d'ascenseur premontee
GB2352221A (en) * 1999-07-19 2001-01-24 Lg Ind Systems Co Ltd Elevator system
EP1151955A1 (fr) * 1999-12-06 2001-11-07 Mitsubishi Denki Kabushiki Kaisha Dispositif d'ascenseur
WO2003031310A1 (fr) * 2001-09-27 2003-04-17 Mitsubishi Denki Kabushiki Kaisha Ascenseur sans local de machinerie

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0761744A (ja) * 1993-08-18 1995-03-07 Otis Elevator Co 巻き上げ式エレベーター
JP4135262B2 (ja) * 1999-07-15 2008-08-20 三菱電機株式会社 自走式エレベータ装置
JP2004001919A (ja) * 2002-05-30 2004-01-08 Otis Elevator Co エレベータ装置
JP2004026424A (ja) * 2002-06-26 2004-01-29 Toshiba Elevator Co Ltd エレベータ設備

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999016694A2 (fr) * 1997-10-01 1999-04-08 Wittur Aufzugteile Gmbh & Co. Cage d'ascenseur premontee
GB2352221A (en) * 1999-07-19 2001-01-24 Lg Ind Systems Co Ltd Elevator system
EP1151955A1 (fr) * 1999-12-06 2001-11-07 Mitsubishi Denki Kabushiki Kaisha Dispositif d'ascenseur
WO2003031310A1 (fr) * 2001-09-27 2003-04-17 Mitsubishi Denki Kabushiki Kaisha Ascenseur sans local de machinerie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2005082767A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102039055A (zh) * 2010-12-28 2011-05-04 深圳华强数码电影有限公司 三自由度程控威亚机械
CN102039055B (zh) * 2010-12-28 2012-11-14 深圳华强数码电影有限公司 三自由度程控威亚机械
EP3025999A1 (fr) * 2014-11-25 2016-06-01 KONE Corporation Agencement et procédé d'installation d'un cable d'ascenseur
US9862574B2 (en) 2014-11-25 2018-01-09 Kone Corporation Elevator roping arrangement and method for installing roping of an elevator
AU2015258338B2 (en) * 2014-11-25 2020-01-02 Kone Corporation Arrangement and method

Also Published As

Publication number Publication date
CN1761608A (zh) 2006-04-19
JPWO2005082767A1 (ja) 2008-01-17
WO2005082767A1 (fr) 2005-09-09
EP1724229A4 (fr) 2011-07-20

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