EP1460021A1 - Aufzugsvorrichtung - Google Patents

Aufzugsvorrichtung Download PDF

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Publication number
EP1460021A1
EP1460021A1 EP01978950A EP01978950A EP1460021A1 EP 1460021 A1 EP1460021 A1 EP 1460021A1 EP 01978950 A EP01978950 A EP 01978950A EP 01978950 A EP01978950 A EP 01978950A EP 1460021 A1 EP1460021 A1 EP 1460021A1
Authority
EP
European Patent Office
Prior art keywords
car
vibration
elevator apparatus
vibration reducing
reducing device
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Withdrawn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
EP01978950A
Other languages
English (en)
French (fr)
Other versions
EP1460021A4 (de
Inventor
Kiyoshi Funai
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 EP1460021A1 publication Critical patent/EP1460021A1/de
Publication of EP1460021A4 publication Critical patent/EP1460021A4/de
Withdrawn legal-status Critical Current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
    • B66B7/04—Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes
    • 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
    • B66B11/02—Cages, i.e. cars
    • B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
    • B66B11/028—Active systems

Definitions

  • This invention relates to an elevator apparatus in which a car is raised and lowered in a hoistway while being guided by guide rails.
  • a car is guided by guide rails when the car is raised and lowered in a hoistway. That is, the car has on both sides of its upper and lower portions guide devices engaged with guide rails (roller guide devices or sliding guide devices).
  • the relative modulus of elasticity is lower than that of currently-used ropes, so that it is to be expected that the car will be more easily subject to vibration.
  • Fig. 5 is an explanatory diagram illustrating how a car vibrates when at rest in a conventional rope-type elevator apparatus.
  • a case is assumed in which fluctuation in load occurs as a result of one passenger (75 kg) getting in a twelve-passenger car with a mass of approximately 2000 kg when the car is at rest, the drawing showing the results of the analysis of the changes in the vibration of the car floor.
  • JP 2001-106456 A discloses a hydraulic elevator in which, when the car is at rest, friction shoes of high coefficient of friction are pressed against the guide rails by electromagnetic coils, thereby securing the car to the guide rails.
  • the position of the car undergoes no change despite the fluctuations in load when a passenger gets in or out of the car, so that it is impossible to detect the fluctuation in load in the car at rest from a change in the car position.
  • the fluctuation in load when the car is at rest is detected from a change in the position of the car, and a motor torque corresponding to the fluctuation in load is imparted to the hoist, thereby preventing vibration due to the instantaneous fluctuation in load when starting the car. If, however, the car is secured when at rest, the fluctuation in load cannot be detected, so that it is impossible to prevent the vibration when starting the car.
  • the increase in load due to the passenger has to be coped with by the frictional force of the friction shoes.
  • the larger the car volume the larger the requisite frictional force.
  • a twelve-passenger elevator with a mass of approximately 800 kg when filled to capacity
  • To support this load with the frictional force of friction shoes with a coefficient of friction . 0.5, it is necessary for the friction shoes to be pressed with a force of approximately 16000 N.
  • This invention has been made with a view toward solving the above-mentioned problem in the prior art. It is an object of this invention to provide an elevator apparatus capable of reducing the vibration in the car when at rest due to passengers getting on and off.
  • An elevator apparatus is equipped with a hoistway and a car that is raised and lowered in the hoistway, in which mounted on the car is a vibration reducing device which is engaged with a stationary portion in the hoistway when the car is at rest to attenuate vibration of the car.
  • Fig. 1 is a schematic diagram showing the construction of an elevator apparatus according to an embodiment of this invention.
  • a machinery room 2 is provided above a hoistway 1.
  • a hoist 3 having a drive sheave 3a is installed through the intermediation of a plurality of hoist vibration proof rubber members 4.
  • a rope (main rope) 5 is wrapped around the drive sheave 3a.
  • the rope 5 can be regarded as a spring having a spring constant determined by the material thereof. In particular, when the ascent/descent travel is long, and the rope length is large, the spring constant of the rope 5 is small.
  • a car 6 is suspended at one end of the rope 5.
  • a balance weight 7 is suspended.
  • a pair of guide rails 8 serving as stationary portions for guiding the car 6 as it ascends and descends.
  • the car 6 has a car frame 9, a car chamber 10 supported by the car frame 9, a plurality of under-floor vibration proof rubber members 11 provided between the car frame 9 and the car chamber 10, and a plurality of roller guide devices (or sliding guide devices) 12 engaged with the guide rails 8.
  • the car frame 9 is connected to the rope 5 through the intermediation of a shackle spring device 13.
  • a pair of vibration reducing devices 14 adapted to be engaged with the guide rails 8 when the car 6 is at rest to attenuate the vibration of the car 6.
  • Fig. 2 is an enlarged view of a main portion of Fig. 1.
  • Each vibration reducing device 14 is mounted to the upper portion of the frame 9 through the intermediation of a mounting member 15. Further, each vibration reducing device 14 is arranged above the roller guide device 12 so that it will not interfere with the guide roller of the roller guide device 12.
  • Fig. 3 is a plan view of one of the vibration reducing devices 14 of Fig. 1.
  • the vibration reducing device 14 has an opening/closing mechanism 16, a pair of friction shoes 17, an electromagnetic actuator 18, and a return spring 19.
  • the friction shoes 17 are mounted on the opening/closing mechanism 16 so as to be opposed to the guide rail 8. Further, the friction shoes 17 are pressed against the guide rail 8 through the opening/closing mechanism 16 by the electromagnetic force of the electromagnetic actuator 18. When the electromagnetic actuator 8 is driven, the guide rail 8 is held between the pair of friction shoes 17. When the friction shoes 17 are pressed against the guide rail 8, vibration of the car 6 is attenuated by the frictional force.
  • the opening/closing mechanism 16 is constantly urged by the return spring 19 so as to move the friction shoes 17 away from the guide rail 8.
  • the friction shoes 17 are separated from the guide rail 8.
  • a vibration reducing control device 20 Connected to the electromagnetic actuator 18 is a vibration reducing control device 20 which drives the electromagnetic actuator 18 when the car 6 is at rest with its door being open to operate the vibration reducing device 14.
  • the friction shoes 17 are formed of a high-polymer material such as polyurethane or polyethylene.
  • the magnitude of the frictional force of the friction shoes 17 is substantially equal to the product of the pressurizing force P and the coefficient of friction . between the friction shoes 17 and the guide rails 8. Thus, by appropriately setting the pressurizing force P, it is possible to quickly attenuate the vibration of the car 6.
  • the electromagnetic actuators 18 are de-energized, so that the friction shoes 17 are separated from the slide surfaces of the guide rails 8 by the return springs 19.
  • Fig. 4 is an explanatory diagram illustrating how a car is vibrated when at rest in a rope type elevator apparatus to which the vibration reducing device 14 of Embodiment 1 is applied.
  • the fluctuation in load occurs as a result of one passenger (75 kg) getting into a twelve-passenger car with a mass of approximately 2000 kg when the car is at rest, the drawing showing the results of the analysis of the changes in the vibration of the car floor.
  • a vibration reducing device 14 capable of generating a frictional force of 150 N in the sliding direction is used.
  • the vibration of the car 6 can be attenuated to a sufficient degree with the frictional force of 150 N.
  • the optimum value of the frictional force for attenuating the vibration varies depending upon the rope spring constant determined by the number and thickness of the ropes 5 and the weight of the car 6.
  • the vibration reducing devices 14 When the frictional force provided by the vibration reducing devices 14 is too large, the fluctuation in load caused by a passenger getting in or out cannot be detected by a weighing device. Thus, when the total frictional force generated by the vibration reducing devices 14 is not more than 600 N (approximately 60 kgf), which corresponds to the weight of one passenger, the fluctuation in load can be detected by a weighing device, making it possible to prevent the vibration of the car 6 when it starts.
  • the vibration reducing devices 14 it is possible to restrain the vibration of the car 6 due to fluctuation in load when the car is at rest, thus keeping passengers from experiencing unpleasant feelings. Further, as compared with the system in which the car 6 is completely secured in position, the requisite pressurizing force for reducing the vibration may be smaller, thus making it possible to achieve a reduction in the size of the electromagnetic actuator 18. Further, since it is possible to detect fluctuation in the load of the car 6 to endow the hoist 3 with an appropriate torque, it is also possible to prevent the vibration of the car 6 when it starts.
  • the vibration reducing devices 14 are engaged with the guide rails 8, which are stationary portions, it is also possible to secure in the hoistway dedicated friction members with which the friction shoes are to be brought into and out of contact.
  • a material suitable for vibration reduction can be freely selected, thus making it possible to reduce vibration more efficiently.
  • the friction members, which are only used when the car is at rest need not be provided so as to extend throughout the hoistway but at intervals where necessary.
  • vibration reducing devices 14 are arranged above the car 6, there are no limitations regarding the mounting positions for the vibration reducing devices; for example, they may be provided under the car 6.
  • vibration reducing device 14 is provided on either side of the car 6, it is also possible for the device to be provided on one side only.
  • the vibration reducing device 14 is constructed such that the guide rail 8 is held between a pair of friction shoes 17, it is also possible to press a single friction shoe against the guide rail.
  • the friction shoes 14 are brought into frictional contact with the guide rail 8, this should not be construed restrictively.
  • the electromagnetic actuator 18 is used as the actuator for bringing the friction shoes 14 into and out of contact with the guide rail 8, it is also possible, for example, to use an actuator utilizing air pressure or oil pressure.
  • this invention is also applicable to an elevator apparatus with some other roping system, such as the 2:1 roping system.
  • the invention is applied to an elevator apparatus using the electric hoist 3, the invention is also applicable to a direct or indirect type (rope type) hydraulic elevator.

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)
EP01978950A 2001-10-30 2001-10-30 Aufzugsvorrichtung Withdrawn EP1460021A4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/009515 WO2003037773A1 (fr) 2001-10-30 2001-10-30 Dispositif elevateur

Publications (2)

Publication Number Publication Date
EP1460021A1 true EP1460021A1 (de) 2004-09-22
EP1460021A4 EP1460021A4 (de) 2008-11-12

Family

ID=11737885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01978950A Withdrawn EP1460021A4 (de) 2001-10-30 2001-10-30 Aufzugsvorrichtung

Country Status (5)

Country Link
EP (1) EP1460021A4 (de)
JP (1) JPWO2003037773A1 (de)
KR (1) KR20040019269A (de)
CN (1) CN1482994A (de)
WO (1) WO2003037773A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1705147A1 (de) * 2005-03-24 2006-09-27 Inventio Ag Aufzugsanlage mit vertikaler Schwingungskompensation
CN101234719B (zh) * 2007-02-02 2012-05-23 因温特奥股份公司 电梯和监控这种电梯的方法
EP2655233A4 (de) * 2010-12-22 2016-06-01 Otis Elevator Co Reibungsdämpfer zur reduzierung einer aufzugskabinenbewegung
US20160355377A1 (en) * 2013-12-19 2016-12-08 Inventio Ag Caliper brake for elevator systems
WO2023017312A1 (en) * 2021-08-10 2023-02-16 Tk Elevator Innovation And Operations Gmbh Stabilizing assemblies and methods of use thereof

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7360630B2 (en) * 2004-04-16 2008-04-22 Thyssenkrupp Elevator Capital Corporation Elevator positioning system
JP4520319B2 (ja) * 2005-01-26 2010-08-04 三菱電機株式会社 レール把持機構ならびにそれを用いたエレベータの安全装置
CN100460303C (zh) * 2006-09-20 2009-02-11 宁波申菱电梯配件有限公司 电梯开门机
JP4097686B1 (ja) * 2007-08-14 2008-06-11 横浜エレベータ株式会社 テレスコフレーム方式の中層用エレベータ
JP2012218897A (ja) * 2011-04-11 2012-11-12 Toshiba Elevator Co Ltd エレベータ
JP2013086933A (ja) * 2011-10-19 2013-05-13 Hitachi Ltd エレベーター装置
JP6066067B2 (ja) * 2013-02-22 2017-01-25 フジテック株式会社 共振軽減装置
CN104724575A (zh) * 2013-12-23 2015-06-24 三菱电机上海机电电梯有限公司 具有停层减振功能的滚动导靴
CN104176583B (zh) * 2014-08-18 2016-05-25 李洪彦 一种垂直升降电梯的安全装置
WO2016096763A1 (de) 2014-12-17 2016-06-23 Inventio Ag Dämpfereinheit für einen aufzug
JP6416037B2 (ja) * 2015-04-20 2018-10-31 株式会社日立製作所 エレベーター
CN105565122B (zh) * 2016-03-18 2018-03-23 杭州临安众方机电有限公司 电梯轿厢的稳定机构
KR101887142B1 (ko) * 2017-10-23 2018-08-09 주식회사 송산특수엘리베이터 초대형 고하중용 엘리베이터의 안전장치
KR102007089B1 (ko) * 2017-10-31 2019-08-02 현대엘리베이터주식회사 엘리베이터의 저층부 탑승 시 종진동 저감장치
US11130655B2 (en) 2018-01-10 2021-09-28 Otis Elevator Company Elevator car dynamic sag damping system
CN114751277A (zh) * 2022-04-19 2022-07-15 日立电梯（中国）有限公司 一种电梯平衡救援系统及电梯

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1067084A1 (de) * 1999-06-25 2001-01-10 Inventio Ag Vorrichtung und Verfahren zur Verhinderung von Vertikalverschiebungen und Vertikalschwingungen an Lastaufnahmemitteln von Vertikalförderanlagen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0318577A (ja) * 1989-06-13 1991-01-28 Mitsubishi Electric Corp エレベータ装置
JPH0769558A (ja) * 1993-09-07 1995-03-14 Toshiba Corp 油圧エレベータ
JPH0925065A (ja) * 1995-07-12 1997-01-28 Hitachi Ltd エレベータ乗りかごの停止装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1067084A1 (de) * 1999-06-25 2001-01-10 Inventio Ag Vorrichtung und Verfahren zur Verhinderung von Vertikalverschiebungen und Vertikalschwingungen an Lastaufnahmemitteln von Vertikalförderanlagen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO03037773A1 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1705147A1 (de) * 2005-03-24 2006-09-27 Inventio Ag Aufzugsanlage mit vertikaler Schwingungskompensation
CN101234719B (zh) * 2007-02-02 2012-05-23 因温特奥股份公司 电梯和监控这种电梯的方法
EP2655233A4 (de) * 2010-12-22 2016-06-01 Otis Elevator Co Reibungsdämpfer zur reduzierung einer aufzugskabinenbewegung
US20160355377A1 (en) * 2013-12-19 2016-12-08 Inventio Ag Caliper brake for elevator systems
US10442662B2 (en) * 2013-12-19 2019-10-15 Inventio Ag Caliper brake for elevator systems
WO2023017312A1 (en) * 2021-08-10 2023-02-16 Tk Elevator Innovation And Operations Gmbh Stabilizing assemblies and methods of use thereof

Also Published As

Publication number Publication date
CN1482994A (zh) 2004-03-17
WO2003037773A1 (fr) 2003-05-08
EP1460021A4 (de) 2008-11-12
KR20040019269A (ko) 2004-03-05
JPWO2003037773A1 (ja) 2005-02-17

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