EP2551228A1 - Ascenseur - Google Patents

Ascenseur Download PDF

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Publication number
EP2551228A1
EP2551228A1 EP12189721A EP12189721A EP2551228A1 EP 2551228 A1 EP2551228 A1 EP 2551228A1 EP 12189721 A EP12189721 A EP 12189721A EP 12189721 A EP12189721 A EP 12189721A EP 2551228 A1 EP2551228 A1 EP 2551228A1
Authority
EP
European Patent Office
Prior art keywords
car
counterweight
disposed
hoistway
counterweights
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Withdrawn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
EP12189721A
Other languages
German (de)
English (en)
Inventor
Takenobu Honda
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 EP2551228A1 publication Critical patent/EP2551228A1/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Withdrawn legal-status Critical Current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
    • B66B17/00—Hoistway equipment
    • B66B17/12—Counterpoises
    • 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
    • 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
    • B66B7/022—Guideways; Guides with a special shape

Definitions

  • the present invention relates to a traction-drive-type elevator apparatus in which a car and a counterweight suspended inside a hoistway by a main rope are raised and lowered by a driving apparatus.
  • the present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus enabling counterweights to be arranged more efficiently by using space inside a hoistway more effectively.
  • an elevator apparatus including: a car having mutually opposite first and second side surface portions, the car being raised and lowered inside a hoistway; a pair of car guide rails installed inside the hoistway so as to face the first and second side surface portions, the car guide rails guiding raising and lowering of the car; a first counterweight disposed so as to face the first side surface portion in a plane projected vertically, the first counterweight being disposed in front of the car guide rail relative to a depth direction of the car, and the first counterweight being raised and lowered inside the hoistway; a second counterweight disposed so as to face the second side surface portion in a plane projected vertically, the second counterweight being disposed in front of the car guide rail relative to a depth direction of the car, and the second counterweight being raised and lowered inside the hoistway; a main rope group for suspending the car, the first counterweight, and the second counterweight inside the hoistway; and a driving apparatus having
  • Figure 1 is a plan showing an elevator apparatus according to Embodiment 1 of the present invention
  • Figure 2 is a plan showing Figure 1 with a driving apparatus removed.
  • a pair of car guide rails 2, a pair of first counterweight guide rails 3, and a pair of second counterweight guide rails 4 are installed inside a hoistway 1.
  • a car 5 is raised and lowered inside the hoistway 1 along the car guide rails 2.
  • a first counterweight 6 is raised and lowered inside the hoistway along the first counterweight guide rails 3.
  • a second counterweight 7 is raised and lowered inside the hoistway 1 along the second counterweight guide rails 4.
  • the car guide rails 2 are disposed such that an imaginary straight line connecting them extends parallel to a direction of frontage of the car 5 in a plane projected vertically.
  • the first counterweight guide rails 3 are disposed such that an imaginary straight line connecting them extends parallel to a depth direction of the car 5.
  • the second counterweight guide rails 4 are disposed such that an imaginary straight line connecting them extends parallel to a depth direction of the car 5.
  • the car 5 has: mutually opposite first and second side surface portions 5a and 5b; a front surface portion 5c in which a car entrance 5e is disposed; and a back surface portion 5d opposite the front surface portion 5c.
  • the car guide rails 2 are installed inside the hoistway 1 so as to face the first and second side surface portions 5a and 5b, respectively.
  • the car entrance 5e is opened and closed by a pair of car doors 5f.
  • the first counterweight 6 is disposed so as to face the first side surface portion 5a in a plane projected vertically.
  • the first counterweight 6 is disposed between the first side surface portion 5a and a hoistway wall 1a opposite the first side surface portion 5a.
  • the second counterweight 7 is disposed so as to face the second side surface portion 5b in a plane projected vertically.
  • the second counterweight 7 is disposed between the second side surface portion 5b and a hoistway wall 1b opposite the second side surface portion 5b.
  • the first and second counterweights 6 and 7 are disposed in front of the car guide rails 2 and behind the front surface portion 5c in a depth direction of the car 5.
  • a driving apparatus 8 for raising and lowering the car 5 and the first and second counterweights 6 and 7 is disposed in an upper portion inside the hoistway 1. Motors are mounted internally in the driving apparatus 8.
  • the driving apparatus 8 includes: a first hoisting machine 9 disposed directly above the first counterweight 6; and a second hoisting machine 10 disposed directly above the second counterweight 7.
  • the first and second hoisting machines 9 and 10 are disposed so as to overlap with the first and second counterweights 6 and 7 and not to overlap with the car 5 in a plane projected vertically.
  • the first hoisting machine 9 includes a motor and a first drive sheave 11.
  • the second hoisting machine 10 includes a motor and a second drive sheave 12.
  • a thin hoisting machine having an axial dimension smaller than a motor diameter is used for each of the hoisting machines 9 and 10.
  • the hoisting machines 9 and 10 are disposed such that rotating shafts of the drive sheave 11 and 12 extend horizontally.
  • a main rope group 13 is wound around the first and second drive sheaves 11 and 12.
  • the main rope group 13 includes: a first main rope 14 wound around the first drive sheave 11; and a second main rope 15 wound around the second drive sheave 12.
  • a first rope connecting portion 16 is disposed on an edge portion of a lower portion of the car 5 near the first side surface portion 5a.
  • a second rope connecting portion 17 is disposed on an edge portion of a lower portion of the car 5 near the second side surface portion 5b.
  • a first end portion of the first main rope 14 is connected to the first rope connecting portion 16, and a second end portion of the first main rope 14 is connected to an upper portion of the first counterweight 6.
  • a first end portion of the second main rope 15 is connected to the second rope connecting portion 17, and a second end portion of the second main rope 15 is connected to an upper portion of the second counterweight 7.
  • the car 5 and the first counterweight 6 are suspended inside the hoistway 1 by the first main rope 14 using a one-to-one (1:1) ropingmethod.
  • the car 5 and the second counterweight 7 are suspended inside the hoistway 1 by the second main rope 15 using a one-to-one (1:1) roping method.
  • An imaginary straight line joining a point of suspension of the car 5 by the first main rope 14 and a point of suspension of the car 5 by the second main rope 15 passes through a center of gravity of the car 5 in a plane projected vertically. In other words, the car 5 is suspended substantially at its center of gravity.
  • Openable and closable first and second inspection openings 18 and 19 are disposed on the first and second side surface portions 5a and 5b, respectively, of the car 5.
  • the first and second hoisting machines 9 and 10 are disposed in positions enabling maintenance inspection from inside the car 5 through the first and second inspection openings 18 and 19, respectively.
  • the first and second hoisting machines 9 and 10 are disposed so as to face the first and second side surface portions 5a and 5b when the car 5 is moved to an uppermost portion inside the hoistway 1.
  • the car guide rails 2, the counterweight guide rails 3 and 4, the counterweights 6 and 7, the driving apparatus 8, and the main rope group 13 are disposed with bilateral symmetry relative to a center line in a direction of frontage of the car 5 in a plane projected vertically.
  • Figure 3 is a right side elevation showing part of Figure 1 .
  • a supporting platform 20 is fixed to an upper'portion of the car guide rails 2 and the first counterweight guide rails 3.
  • the first hoisting machine 9 is mounted onto the supporting platform 20.
  • the second hoisting machine 10 is also supported on a similar supporting platform on an opposite side of the car 5.
  • a control apparatus (control board) 21 for controlling operation of the driving apparatus 8 is disposed above the first hoisting machine 9.
  • FIGs 1 and 2 depiction of the control apparatus 21 is omitted.
  • the load of the first hoisting machine 9 and the control apparatus 21 is supported by the car guide rails 2 and the first counterweight guide rails 3 through the supporting platform 20.
  • the control apparatus 21 is disposed in a position enabling maintenance inspection from inside the car 5 through the first inspection opening 18. Specifically, the control apparatus 21 is disposed so as to face the first side surface portion 5a when the car 5 is moved to an uppermost portion inside the hoistway 1.
  • Operating modes of the first and second hoisting machines 9 and 10 by the control apparatus 21 include: a first mode in which a driving force is generated in both of the first and second hoisting machines 9 and 10; and a second mode in which a driving force from is generated only in the first hoisting machine 9. In the second mode, a brake on the second hoisting machine 10 is released, and the second drive sheave 12 idles.
  • the operating modes of the control apparatus 21 are switched so as to correspond to loads inside the car 5.
  • the first mode may be used during a state of no load or full load, for example, since the difference in load between the car 5 and the first and second counterweights 6 and 7 is great.
  • the second mode may be used during a state of half load, since the difference in load between the car 5 and the first and second counterweights 6 and 7 is small.
  • a counterweight is divided into first and second counterweights 6 and 7 and disposed in a narrow space in front'of the car guide rails 2, space inside the hoistway 1 can be used more effectively to dispose the counterweights 6 and 7 more efficiently. Since the counterweights 6 and 7 are not visible from inside the car 5 even if portions of the first and second side surface portions 5a and 5b behind the car guide rails 2 are made transparent, a field of view can be widened when applied to observation elevators.
  • the respective hoisting machines 9 and 10 can be reduced in size enabling installation space to be reduced. Moreover, because thin hoisting machines are used'for the hoisting machines 9 and 10, the first and second hoisting machines 9 and 10 can be disposed between the first and second side surface portions 5a and 5b and the hoistway walls 1a and 1b, enabling a vertical dimension of the hoistway 1 to be reduced.
  • first and second hoisting machines 9 and 10 are operated so as to be switched between a first mode and a second mode so as to correspond to the loads inside the car 5, power can be saved.
  • control apparatus 21 is disposed above the driving apparatus 8, space inside the hoistway 1 can be used more effectively, and maintenance inspection work on the driving apparatus 8 and the control apparatus 21 can be performed at an identical location, enabling work efficiency to be improved.
  • the inspection openings 18 and 19 are disposed in the first and second side surface portions 5a and 5b, maintenance inspection work on the first and second counterweights 6 and 7, the driving apparatus 8, and the control apparatus 21 can be performed from inside the car 5, enabling work efficiency to be improved.
  • operating modes of the control apparatus 21 are not limited to the above first and second modes.
  • the respective first and second main ropes 14 and 15 are not limited to a particular number of ropes.
  • the load of the driving apparatus 8 and the control apparatus 21 was borne by the guide rails 2, 3, and 4, but may also be borne by a supporting beam fixed to a building, for example.
  • Embodiment 1 two counterweights were used, but it is also possible to use three or more counterweights.
  • Figure 4 is a plan showing an elevator apparatus according to Embodiment 2 of the present invention
  • Figure 5 is a side elevation showing part of Figure 4 .
  • first and second guide ropes 22 and 23 for guiding raising and lowering of first and second counterweights 6 and 7 are installed inside a hoistway 1.
  • the first and second guide ropes 22 and 23 are disposed under tension inside the hoistway 1 so as to extend in a raising and lowering direction of the first and second counterweights 6 and 7, in other words, in a vertical direction.
  • Upper end portions of the first and second guide ropes 22 and 23 are connected to a supporting platform 20.
  • Lower end portions of the first and second guide ropes 22 and 23 are connected to a lower portion inside the hoistway 1.
  • a tension imparting means (not shown) for imparting tension to the guide ropes 22 and 23 is disposed in a lower portion inside the hoistway 1.
  • first and second guide ropes 22 and 23 are used, a portion of the counterweight guide rails 3 and 4 can be eliminated. Since the counterweight guide rails 3 and 4 are configured by joining together a plurality of rails in a vertical direction, if a portion of the counterweight guide rails 3 and 4 can be eliminated, the number of parts can be reduced and the time spent on installation can also be reduced significantly, enabling costs to be reduced.
  • FIG. 6 is a front elevation showing a driving apparatus of an elevator apparatus according to Embodiment 3 of the present invention.
  • a plurality of main ropes 14 are wound around a first drive sheave 11.
  • Each of the main ropes 14 is configured by twisting a plurality of strands together.
  • the plurality of main ropes 14 wound around the first drive sheave 11 have directions of lay (twisting) of the strands that differ from each other.
  • the rest of the configuration is similar to that of Embodiment 2, and a plurality of main ropes 15 having directions of lay (twisting) of the strands that differ from each other are also wound around the second drive sheave 12.
  • the number of wire ropes having a left lay and the number of wire ropes having a right lay equal in number in the main ropes suspending a single counterweight.
  • Figure 7 is a plan showing an elevator apparatus according to Embodiment 4 of the present invention
  • Figure 8 is a plan showing Figure 7 with a driving apparatus and a return sheave removed
  • Figure 9 is a front elevation showing a counterweight from Figure 7 .
  • a first counterweight 6 is guided so as to be raised and lowered inside a hoistway 1 by a plurality of first guide ropes 22 (in this case two) disposed under tension inside the hoistway 1.
  • a pair of guiding grooves 6a into which the first guide ropes 22 are inserted are disposed in first and second end portions in a width direction of the first counterweight 6.
  • a second counterweight 7 is guided so as to be raised and lowered inside the hoistway 1 by a plurality of second guide ropes 23 (in this case two) disposed under tension inside the hoistway 1.
  • a pair of guiding grooves 7a into which the second guide ropes 23 are inserted are disposed in first and second end portions in a width direction of the second counterweight 7.
  • a plurality of stoppers 24 for restricting horizontal swinging of the first and second counterweights 6 and 7 by engaging the first and second counterweights 6 and 7 are installed inside the hoistway 1.
  • the stoppers 24 are each constituted by a rigid body made of a metal, etc., for example, and are fixed to hoistway walls 1a and 1b by means of mounting members such as brackets, etc.
  • a rotatable return sheave 25 is installed directly above the second counterweight 7.
  • a second main rope 15 is wound around the return sheave 25.
  • Embodiment 1 two hoisting machines 9 and 10 were used, but in Embodiment 4, only one hoisting machine 9 is used. The rest of the configuration is similar to that of Embodiment 1.
  • stoppers 24 are used, even if a building is shaken by an earthquake, etc., horizontal swinging of the counterweights 6 and 7 can be restricted, and the counterweights 6 and 7 can be prevented from colliding with the car 5 or hoistway equipment, etc.
  • the stoppers 24 can be configured more inexpensively than counterweight guide rails.
  • the driving apparatus 8 is configured by a single hoisting machine 9, and only a return sheave 25 is disposed near the second counterweight 7, costs can be reduced and control can be simplified.
  • FIG. 10 is a cross section showing part of an elevator apparatus according to Embodiment 5 of the present invention.
  • a plurality of guide ropes 22 (in this case six) are disposed under tension so as to surround a counterweight 6.
  • the guide ropes 22 are disposed not only on first and second end portions in a width direction of the counterweight 6, but also on first and second sides in a thickness direction (on a side near a car 5 and on an opposite side from the car 5).
  • Upper end portions of the guide ropes 22 are connected to a supporting platform fixed to car guide rails, or to a supporting beam fixed to a building, etc.
  • guide ropes 22 are disposed'on two sides in a thickness direction of the counterweight 6, but the method of arrangement of the guide ropes 22 is not limited to this.
  • the number of guide ropes 22 on the opposite side from the car 5 may be fewer than those on the side near the car 5, or the guide ropes 22 on the opposite side from the car 5 may also be eliminated.

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)
EP12189721A 2003-12-11 2003-12-11 Ascenseur Withdrawn EP2551228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03778827A EP1693330A4 (fr) 2003-12-11 2003-12-11 Dispositif elevateur
PCT/JP2003/015886 WO2005056457A1 (fr) 2003-12-11 2003-12-11 Dispositif elevateur

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP03778827.0 Division 2003-12-11

Publications (1)

Publication Number Publication Date
EP2551228A1 true EP2551228A1 (fr) 2013-01-30

Family

ID=34674687

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12189721A Withdrawn EP2551228A1 (fr) 2003-12-11 2003-12-11 Ascenseur
EP03778827A Withdrawn EP1693330A4 (fr) 2003-12-11 2003-12-11 Dispositif elevateur

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03778827A Withdrawn EP1693330A4 (fr) 2003-12-11 2003-12-11 Dispositif elevateur

Country Status (4)

Country Link
EP (2) EP2551228A1 (fr)
JP (1) JPWO2005056457A1 (fr)
CN (1) CN100345742C (fr)
WO (1) WO2005056457A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10589963B2 (en) 2015-04-10 2020-03-17 Otis Elevator Company Elevator safety gear alignment system and method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1736431B1 (fr) * 2004-04-14 2011-03-23 Mitsubishi Denki Kabushiki Kaisha Appareillage d'ascenseur
KR101016822B1 (ko) * 2006-05-19 2011-02-21 미쓰비시덴키 가부시키가이샤 엘리베이터 장치
US8925689B2 (en) 2011-01-19 2015-01-06 Smart Lifts, Llc System having a plurality of elevator cabs and counterweights that move independently in different sections of a hoistway
US8430210B2 (en) * 2011-01-19 2013-04-30 Smart Lifts, Llc System having multiple cabs in an elevator shaft
JP6270632B2 (ja) * 2014-06-04 2018-01-31 三菱電機株式会社 展望用エレベータの釣合い錘装置
DE112016006730T5 (de) * 2016-04-12 2018-12-20 Mitsubishi Electric Corporation Aufzugvorrichtung
CN117916187A (zh) * 2021-09-07 2024-04-19 通力股份公司 电梯装置和建造电梯的方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0489787A (ja) * 1990-08-01 1992-03-23 Mitsubishi Electric Corp エレベーターの駆動装置
US5117945A (en) * 1989-12-05 1992-06-02 Mitsubishi Denki Kabushiki Kaisha Counterweight apparatus for a traction-type elevator
JPH0570057A (ja) * 1991-09-17 1993-03-23 Hitachi Building Syst Eng & Service Co Ltd エレベータ装置
JPH09151059A (ja) * 1995-12-01 1997-06-10 Hitachi Ltd エレベータ装置
JPH11310372A (ja) 1998-04-28 1999-11-09 Toshiba Elevator Co Ltd エレベータ装置
WO2003078290A1 (fr) * 2002-03-15 2003-09-25 Mitsubishi Denki Kabushiki Kaisha Treuil de levage et dispositif de levage

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656485A (en) * 1979-10-15 1981-05-18 Hitachi Ltd Lifting gear for elevator
JPS6064965U (ja) * 1983-10-13 1985-05-08 三菱電機株式会社 エレベ−タの案内レ−ル支持装置
JPS6270187A (ja) * 1985-09-24 1987-03-31 三菱電機株式会社 エレベ−タ装置
US5899300A (en) * 1996-12-20 1999-05-04 Otis Elevator Company Mounting for an elevator traction machine
WO1999043593A1 (fr) * 1998-02-26 1999-09-02 Otis Elevator Company Systeme d'ascenseur presentant un moteur d'entrainement situe dans un espace superieur
JP3704960B2 (ja) * 1998-07-31 2005-10-12 株式会社日立製作所 トラクションエレベーター
KR100351275B1 (ko) * 1999-07-19 2002-09-09 엘지 오티스 엘리베이터 유한회사 머신룸 레스 엘리베이터
JP4771586B2 (ja) * 2000-12-08 2011-09-14 東芝エレベータ株式会社 エレベータ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117945A (en) * 1989-12-05 1992-06-02 Mitsubishi Denki Kabushiki Kaisha Counterweight apparatus for a traction-type elevator
JPH0489787A (ja) * 1990-08-01 1992-03-23 Mitsubishi Electric Corp エレベーターの駆動装置
JPH0570057A (ja) * 1991-09-17 1993-03-23 Hitachi Building Syst Eng & Service Co Ltd エレベータ装置
JPH09151059A (ja) * 1995-12-01 1997-06-10 Hitachi Ltd エレベータ装置
JPH11310372A (ja) 1998-04-28 1999-11-09 Toshiba Elevator Co Ltd エレベータ装置
WO2003078290A1 (fr) * 2002-03-15 2003-09-25 Mitsubishi Denki Kabushiki Kaisha Treuil de levage et dispositif de levage
EP1486451A1 (fr) * 2002-03-15 2004-12-15 Mitsubishi Denki Kabushiki Kaisha Treuil de levage et dispositif de levage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10589963B2 (en) 2015-04-10 2020-03-17 Otis Elevator Company Elevator safety gear alignment system and method

Also Published As

Publication number Publication date
EP1693330A4 (fr) 2011-07-06
JPWO2005056457A1 (ja) 2007-07-05
EP1693330A1 (fr) 2006-08-23
WO2005056457A1 (fr) 2005-06-23
CN1723169A (zh) 2006-01-18
CN100345742C (zh) 2007-10-31

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