EP2138441A1 - Aufzugsseil - Google Patents

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Publication number
EP2138441A1
EP2138441A1 EP08740020A EP08740020A EP2138441A1 EP 2138441 A1 EP2138441 A1 EP 2138441A1 EP 08740020 A EP08740020 A EP 08740020A EP 08740020 A EP08740020 A EP 08740020A EP 2138441 A1 EP2138441 A1 EP 2138441A1
Authority
EP
European Patent Office
Prior art keywords
rotor
sheave
brake shoes
brake
elevator
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Withdrawn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
EP08740020A
Other languages
English (en)
French (fr)
Other versions
EP2138441A4 (de
Inventor
Naoaki Noguchi
Takashi Teramoto
Atsuya Fujino
Masaki Ariga
Tomio Hayano
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP2138441A1 publication Critical patent/EP2138441A1/de
Publication of EP2138441A4 publication Critical patent/EP2138441A4/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Withdrawn legal-status Critical Current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
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0438—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a gearless driving, e.g. integrated sheave, drum or winch in the stator or rotor of the cage motor
    • 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
    • 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
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
    • B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/30—Operating devices electrical

Definitions

  • the present invention relates to an elevator hoist provided with a brake shoe, which brakes rotation of a rotor of the hoist, and more particular, to an elevator hoist, which is excellent in mounting and exchanging qualities and of which a hoistway is reduced in cross sectional area.
  • Thin-type elevator hoists comprising a braked surface formed on a rotating body having a larger diameter than an external shape of a driving sheave and a brake arranged in opposition to the braked surface and pushed by the braked surface to perform a braking action for the sake of decreasing a thickness in a width direction to achieve thinning and lightening are known and disclosed in, for example, Patent Document 1.
  • the periodic inspection of an elevator hoist includes works such as identification of an abraded state of a brake shoe, an abraded state of a rope groove, a gap between a brake shoe and a braked surface, or the like, and in the case where abrasion of a brake shoe is advanced, it is necessary to exchange the brake shoe.
  • an arrangement which comprises a shoe arranged on an inner side of a cup-shaped portion of a housing and provided to be able to advance toward and retreat from a braked surface of a rotor, and a cover provided so as to cover an opening provided in the vicinity of the braked surface of the rotor on the housing, and in which a sliding state of the braked surface of the rotor, generation of rust, or the like is directly and visually observed by removing the cover at the time of maintenance, is known and described in, for example, Patent Document 2.
  • Patent Document 3 it is known and described in, for example, Patent Document 3 to arrange a pair of brake arms, brake shoes, brake springs, and electromagnets, which constitute a brake device, on a side of a sheave and to perform maintenance and inspection works by means of direct and visual observation in the same direction.
  • an elevator hoist comprising a sheave, round which a rope connected to a cage of an elevator is wound, a rotor, which drives the sheave, a stator housing, on which a stator coil is arranged to face permanent magnets provided annularly on the rotor, and a brake shoe, which brakes the rotor, characterized by comprising the sheave mounted to face a hoistway wall, a rotor having a recess on a side thereof toward the sheave, the brake shoe arranged in the recess, a rotor hole provided on the rotor to have a larger opening than a cross section of the brake shoe, and a stator hole provided on the stator housing to have a larger opening than a cross section of the brake shoe.
  • a rotor hole is provided on the rotor to have a larger opening than a cross section of the brake shoe, and a stator hole is also provided on the housing to have a larger opening than a cross section of the brake shoe, the brake shoe can be exchanged from a side of the stator housing and so it is possible even in a hoist, which is small in diameter and uses a flexible rope, to make the hoist be close to the hoistway wall, thus enabling reducing an area occupied by an elevator.
  • Fig. 2 shows a side, cross section of a machine-room-less elevator.
  • a cage 31 of the elevator is connected to a balance weight (not shown) by a length of rope 6, and the rope 6 is hoisted by a driving sheave 5.
  • a hoist 34 comprises the sheave 5 and a motor unit 33, and a thinned construction is generally mounted on a guide rail 32 or the like in order to reduce an cross sectional area of a hoistway.
  • Fig. 1 is a perspective view showing the whole hoist and a detailed explanation will be given.
  • the hoist includes a stator coil 21 arranged annularly, a housing 36 therefor, the rotor 2, on which permanent magnets 9 are arranged annularly, and an encoder (not shown) for measurement of rotation of the sheave 5.
  • the rotor 2 is curved in cross section to have a recess on a side thereof toward the sheave whereby brake shoes 11 are arranged in a space thus formed.
  • the electromagnets 10 are arranged in a space below the sheave 5 so as to eliminate an increase in thickness of the hoist.
  • Lever 12 for connection between the brake shoes 11 and the electromagnets 10 are provided in a pair every the brake shoe 11, shaped to protrude toward the sheave 5 and arranged so as not to interfere with the rope 6, the rotor 2, etc.
  • Two brake shoes 11 are arranged in a left-right symmetric manner so that it is easy to avoid interference with other parts and an improvement in space efficiency is achieved.
  • rotor holes 4 and stator holes 3, respectively, which are elongated in a circumferential direction, are provided on the rotor 2 and the stator housing 36 to enable exchanging the brake shoes 11 from a side opposite to the sheave, that is, from a cage side.
  • the brake shoes 11 can be likewise arranged by curving the rotor 2 in cross section so as to provide a recess on the side thereof opposite to the sheave, the levers 12 for connection protrude in a width direction of the hoist, so that it is difficult to thin the hoist as a whole.
  • Push springs 13 are mounted to the levers 12, and when the cage is stopped, power distribution to the electromagnets 10 is stopped and a frictional force by means of spring forces brakes rotation of the rotor 2. When the cage is to be operated, power distribution to the electromagnets 10 is performed to accomplish an operation for separation from the braked surface (a).
  • a rotation fulcrum 18 of the lever 12 be made as close to the brake shoe 11 as possible and kept away from the electromagnet 10. That is, a lever ratio is enlarged and attraction required for the electromagnet 10 is decreased. Also, a stroke demanded for the electromagnet 10 is made long, but noises at the time of attraction and release can be reduced by using a proportional solenoid of which attracting force becomes constant in response to a gap.
  • Fig. 3 is a top view showing the embodiment (depiction of the levers and the electromagnets are omitted)
  • Fig. 4 is a front view as viewed from the sheave side (depiction of the levers and the electromagnets are omitted), and a detailed explanation will be described.
  • the rotor 2 and the sheave 5 are mechanically joined together, they may be made integral with each other.
  • the rotor 2 has a bearing 27 press-fitted thereinto to rotate on a support shaft 7 made integral with, or mechanically connected to the housing 36.
  • an outer peripheral surface thereof being equal to or smaller in diameter than the sheave 5 is made a braked portion and the brake shoes 11 are pushed against the rotating braked surface (a) from outside.
  • the inner peripheral surface (b) of the rotor which is curved, may be braked, in which case an outer peripheral wall thickness (t) must be made large so as to withstand a large braking force given by the brake shoes 11.
  • a wall thickness (s) can be increased in a radial direction without an increase in diameter of the whole hoist, so that such arrangement is suited to reduction in diameter of the hoist.
  • the hoist In order to attain space saving for a cross section of the hoistway, the hoist is mounted with the sheave 5 facing the hoistway wall 22. Since it is difficult to exchange the brake shoes 11 from the hoistway wall 22 side, the rotor holes 4 and the stator holes 3, which comprise openings, are provided on the rotor 2 and the housing 36, respectively. Thereby, it is possible to exchange the brake shoes 11 from the cage side in a position, in which the both holes overlap together as shown in Fig. 4 .
  • a clearance (e) between the rotor 2 and the housing 36 in the width direction of the hoist is made smaller than a width (p) of the holes of the rotor 2 in a radial direction, or a width (q) of the holes on the stator side.
  • a disk-shaped cover 17 is provided on the side of the housing 36 toward the sheave, and a projection 19 and a ringshaped cover 25 are provided on an outer periphery of the rotor 2.
  • the encoder 8 for detecting rotation of the sheave 5 is joined integrally to the sheave 5 and mounted in a recess of the housing 36, which is provided on a side opposite to the sheave 5, through an encoder shaft 24. Thereby, it is possible to access to the encoder 8 from the cage side, thus enabling readily performing exchange work.
  • the rotor 2 is provided with the rotor holes 4a, 4c, which are larger than the cross section of the rotor. Also, in the circumferential direction, small rotor holes 4b, 4d are further formed, and an inner periphery and an outer periphery of the rotor 2 are connected together by spokes 20. Preferably, ribs (not shown) are provided on the spokes 20 so as to ensure a sufficient stiffness therefor.
  • stator holes 3a, 3b being larger in cross section than the brake shoes are formed on the stator housing 36 to be disposed in the vicinity of the brake shoes 11. Rotation of the rotor causes the both holes formed on the stator housing 36 and the rotor 2 to overlap together in the circumferential direction, in which position it is possible to exchange two left and right brake shoes 11 at the same time.
  • a length (m) of the large rotor holes 4a, 4c of the rotor 2 in the circumferential direction must be larger than a length (k) of the brake shoes 11.
  • the larger area of the rotor holes 4 of the rotor the easier it is to visually observe the brake shoes 11 from a side opposite to the sheave, so that it is possible to efficiently perform an exchange work.
  • a circumferential length (n) of the rotor holes 4b, 4d being intermediate between the holes 4a, 4c may be smaller than the length (k) of the brake shoes.
  • the holes 4b, 4d serve to allow confirmation of a clearance between the brake shoes 11 and the braked surface rather than exchange.
  • the rotor 2 is structured such that the rotor hole 4 is at least one in number and the housing 36 is structured such that the stator hole 4 is the same number as that of the brake shoes 11. While the stator holes 3a, 3b on the housing 36 side are surely required on back surfaces of the brake shoes 11, the rotor holes 4 on the rotor side may be plural in number at irregular pitches instead of being left-right symmetric, as far as the brake shoes 11 are shaped to enable removal.
  • the rotor holes 4 on the rotor 2 are not limited to four in number but suffice to be at least one in number provided that a larger hole than the brake shoes 11 is present. Provided that a circumferential length (f) of that portion, on which the hole is not formed, is shorter than the brake shoes 11, it is possible to surely confirm the brake shoes 11.
  • Fig. 5 is a rear view showing the hoist as viewed from a side opposite to the sheave (depiction of the levers and the electromagnets is omitted). Maintenance personnel will see the hoist from the cage side in a state shown in the figure.
  • Fig. 6 shows Embodiment 2 and is a rear view showing the hoist in the same manner as in Fig. 5 .
  • four brake shoes 11 are provided so as to ensure a sufficient braking area in the circumferential direction.
  • Stator holes 3 of a stator housing 36 are four in number to be the same as that of the brake shoes 11.
  • the stator holes 3 are arranged at an equal pitch of 90 degrees, so that it is possible to exchange the brake shoes 11 in rotating positions every 90 degrees.
  • a circumferential length of ribs 20 is shorter than a circumferential length of the holes 3 of the stator housing, it is possible to confirm the brake shoes 11, a braked surface, and a clearance in the same manner as in Fig. 5 .
  • a mode of maintenance operation using the encoder 8 is provided for. That is, when a hoist is to be mounted, pulse count of the encoder 8 is stored in a recording medium in a position, in which removal of the brake shoes 11 is easy, and at the time of maintenance, the cage is moved up and down to take count of encoder pulses at all times. In a position, in which a difference between pulse thus counted and pulse thus stored becomes zero, rotation of the rotor 2 is stopped to stop the cage.
  • the pulse thus stored is not limited to one in number but may be plural in number.
  • a value obtained by adding 360 pulses to the stored pulse is stored as a reference value.
  • the cage should be stopped.
  • stoppage of the cage can be made at a value having some range in response to a size of the rotor holes 4 of the rotor 2.
  • means for detecting the position, in which the both holes overlap each other may be provided using a sensor for detecting mutual positions between a guide rail (not shown) mounted on a building side and the cage.
  • a lower end of the hoist is positioned to be higher than a level 23 of an entrance and exit in order to prevent natural disasters, in particular, flooding due to floodwater or the like.
  • the larger a carrying capacity of a cage the larger a driving torque required for a hoist of an elevator.
  • a stator housing 36 is increased in diameter, so that it is not possible to mount two electromagnets on a lower portion of a hoist.
  • electromagnets 14 can also be arranged left and right in a horizontal direction instead of being arranged below the stator housing 36.
  • a lever 12 for operation of a brake shoe 11 is preferably, for example, L-shaped to have a rotation fulcrum 18 at a right bent portion thereof.
  • brake shoes 11 and electromagnets 14 are not limitative but brake shoes 11 and electromagnets 14 may be arranged in left, right and lower three locations, or in left, right, upper and lower four locations in the case where a large braking torque is needed. With such construction, it is possible to reduce a capacity per one electromagnet 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP08740020.6A 2007-04-10 2008-04-08 Aufzugsseil Withdrawn EP2138441A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007102315A JP5070912B2 (ja) 2007-04-10 2007-04-10 エレベーター用巻上機
PCT/JP2008/056917 WO2008126835A1 (ja) 2007-04-10 2008-04-08 エレベーター用巻上機

Publications (2)

Publication Number Publication Date
EP2138441A1 true EP2138441A1 (de) 2009-12-30
EP2138441A4 EP2138441A4 (de) 2014-07-02

Family

ID=39863932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08740020.6A Withdrawn EP2138441A4 (de) 2007-04-10 2008-04-08 Aufzugsseil

Country Status (5)

Country Link
EP (1) EP2138441A4 (de)
JP (1) JP5070912B2 (de)
CN (1) CN101284620B (de)
HK (1) HK1123270A1 (de)
WO (1) WO2008126835A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101993001B (zh) * 2009-08-25 2012-10-03 包文丽 电梯驱动装置
CN101941629B (zh) * 2009-07-09 2012-11-21 包文丽 电梯驱动装置
CN101987711B (zh) * 2009-07-30 2013-02-13 包文丽 电梯用曳引机
EP3210925A1 (de) * 2010-06-10 2017-08-30 KONE Corporation Aufzugsanordnung
US10442659B2 (en) 2015-06-29 2019-10-15 Otis Elevator Company Electromagnetic brake system for elevator application

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5358282B2 (ja) * 2009-05-14 2013-12-04 株式会社日立製作所 エレベーター用巻上機、及び、エレベーター装置
JP5443929B2 (ja) * 2009-10-01 2014-03-19 三菱電機株式会社 巻上機
JP5604356B2 (ja) * 2011-04-07 2014-10-08 株式会社日立製作所 エレベーター用巻上機及びエレベーター装置
JP5897455B2 (ja) * 2012-12-12 2016-03-30 株式会社日立製作所 エレベータの巻上機
CN105899453B (zh) * 2014-02-24 2017-09-29 株式会社日立制作所 电梯用曳引机
JP6340314B2 (ja) * 2014-12-26 2018-06-06 株式会社日立製作所 巻上機及びエレベータ
CN105438938B (zh) * 2015-12-31 2017-08-11 朗格尔电梯有限公司 一种户外电梯的曳引结构
CN105438939B (zh) * 2015-12-31 2017-08-11 朗格尔电梯有限公司 一种曳引轮
JP6960885B2 (ja) * 2018-06-19 2021-11-05 三菱電機ビルテクノサービス株式会社 コンペンシーブの定位置停止方法
CN110883759B (zh) * 2018-09-11 2023-03-21 沈阳新松机器人自动化股份有限公司 一种大载荷偏载桁架机器人
CN112499431B (zh) * 2020-11-24 2022-04-19 玉禾田环境发展集团股份有限公司 一种磁力减速式高层建筑垃圾排出装置
JP7355175B1 (ja) 2022-07-25 2023-10-03 フジテック株式会社 エレベータのブレーキ制動能力検査方法及びブレーキ制動能力検査装置
CN116177355B (zh) * 2023-04-24 2023-07-14 河南省矿山起重机有限公司 一种起重机用自动抓取吊具装置及其操作系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6006865A (en) * 1996-11-11 1999-12-28 Inventio Ag Lift installation with drive unit arranged in the lift shaft
EP1043261A2 (de) * 1999-04-05 2000-10-11 Mitsubishi Denki Kabushiki Kaisha Aufzugsantrieb
EP1078876A2 (de) * 1999-08-26 2001-02-28 Mitsubishi Denki Kabushiki Kaisha Aufzugssystem mit verbessertem Hebezeug
JP2006036438A (ja) * 2004-07-26 2006-02-09 Mitsubishi Electric Corp エレベーター用巻上機

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002348071A (ja) * 2001-05-22 2002-12-04 Mitsubishi Electric Corp エレベーター巻上機用ブレーキカバー装置
WO2005019085A1 (ja) 2003-08-21 2005-03-03 Mitsubishi Denki Kabushiki Kaisha エレベータ用薄形巻上機
JP4318526B2 (ja) * 2003-10-20 2009-08-26 三菱電機株式会社 エレベータ用巻上機
CN100537392C (zh) * 2004-07-29 2009-09-09 三菱电机株式会社 电梯用曳引机
JP2006219274A (ja) * 2005-02-14 2006-08-24 Mitsubishi Electric Corp エレベータ用巻上機及びエレベータ用巻上機の軸受交換方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6006865A (en) * 1996-11-11 1999-12-28 Inventio Ag Lift installation with drive unit arranged in the lift shaft
EP1043261A2 (de) * 1999-04-05 2000-10-11 Mitsubishi Denki Kabushiki Kaisha Aufzugsantrieb
EP1078876A2 (de) * 1999-08-26 2001-02-28 Mitsubishi Denki Kabushiki Kaisha Aufzugssystem mit verbessertem Hebezeug
JP2006036438A (ja) * 2004-07-26 2006-02-09 Mitsubishi Electric Corp エレベーター用巻上機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008126835A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101941629B (zh) * 2009-07-09 2012-11-21 包文丽 电梯驱动装置
CN101987711B (zh) * 2009-07-30 2013-02-13 包文丽 电梯用曳引机
CN101993001B (zh) * 2009-08-25 2012-10-03 包文丽 电梯驱动装置
EP3210925A1 (de) * 2010-06-10 2017-08-30 KONE Corporation Aufzugsanordnung
US10442659B2 (en) 2015-06-29 2019-10-15 Otis Elevator Company Electromagnetic brake system for elevator application

Also Published As

Publication number Publication date
HK1123270A1 (en) 2009-06-12
JP2008260588A (ja) 2008-10-30
JP5070912B2 (ja) 2012-11-14
CN101284620A (zh) 2008-10-15
CN101284620B (zh) 2010-08-18
EP2138441A4 (de) 2014-07-02
WO2008126835A1 (ja) 2008-10-23

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