US3893542A - Counterweight arrangement for a rack and pinion elevator - Google Patents

Counterweight arrangement for a rack and pinion elevator Download PDF

Info

Publication number
US3893542A
US3893542A US454536A US45453674A US3893542A US 3893542 A US3893542 A US 3893542A US 454536 A US454536 A US 454536A US 45453674 A US45453674 A US 45453674A US 3893542 A US3893542 A US 3893542A
Authority
US
United States
Prior art keywords
mast
counterweight
cable
load carrier
along
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US454536A
Other languages
English (en)
Inventor
Thorbjorn Svensson
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.)
Linden Alimak AB
Original Assignee
Linden Alimak AB
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 Linden Alimak AB filed Critical Linden Alimak AB
Application granted granted Critical
Publication of US3893542A publication Critical patent/US3893542A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/12—Counterpoises

Definitions

  • the invention relates to a device for elevators of the type wherein hoist machinery is arranged in a load carrier and drives the load carrier, preferably by means of pinion and rack, along a path, whose length can be changed, the load carrier being unloaded by a counterweight via a cable placed over a pulley at the upper end of the path, and a cable for power supply to the hoist machinery is hanging in the load carrier.
  • the weight of the lift cage is generally partly balanced by means of a counterweight which, for instance in elevators where the lift cage is guided along a mast, runs on the rear side of the mast and is connected to the lift cage by a cable running over a pulley placed on the top of the elevator mast.
  • FIG. 1 shows an elevator mast with lift cage, counterweight cable and counterweight according to the invention
  • FIG. IA shows an alternative method of arranging a pulley at the top of the elevator mast
  • FIG. 2 shows a device for attaching the counterweight to the counterweight cable
  • FIG. 3 shows a section III-III of the device in FIG. 2.
  • a mast I comprises a plurality of sections 2 along which mast a lift cage 3 is displaceably guided.
  • the elevator is operated by means of a gear driven by a motor in the lift cage, which gear cooperates with a rack arranged along the mast 1.
  • the drive means is no part of the invention, it has been omitted in the drawing.
  • the weight of the lift cage 3 is unloaded by a counterweight 4 displaceably guided along the rear side of the mast I, to which counterweight the lift cage 3 is connected by means of a cable 5, which runs from the lift cage up to a pulley 6 arranged at the top of the mast l, where the cable is diverted, after which it runs down to the counterweight 4, which is detachably and steplessly attachable to the cable at an arbitrary place thereof by means marked by arrows 9. From this point the cable 5 runs unguided further down to a cable drum 7, on which the cable 5 is wound. The cable 5 is maintained constantly wound on the cable drum and stretched by the same by means of a device 8, which e.g.
  • an electrical cable 10 for transferring control impulses and electric power to the hoist motor is hanging.
  • the device is used in casting e.g. a tower by means of a sliding form (indicated at 11), arranged at the top of the tower being built and in which sliding form concrete is cast, said sliding form slowly moving upwards with increasing height of the tower.
  • the pulley 6 is preferably attached to the sliding form, which is shown in FIG. 1.
  • the lift cage 3 is used for transports to and from the sliding form at the upper portion of the growing tower. As the height of the tower is increased, new mast sections 2 must be added to the mast l and the counterweight 4 must be moved downwards a little on its part of the cable 5.
  • the counterweight 4 is moved relative to the cable 5, when required as discussed above, by first tacking the counterweight to the mast I, after which the counterweight is disconnected from the cable and then the lift cage is moved downwards or upwards a certain distance, after which the counterweight is again attached to the cable 5 by means of the means 9.
  • FIG. 1A the pulley 6 is shown as arranged on the uppermost mast section instead. This design is preferred for the arrangement of the pulley, in case a sliding form movable above the mast top or the like should not be available.
  • FIG. 2 and 3 A suitable device for detachably attaching the counterweight 4 to the cable 5 is shown in FIG. 2 and 3.
  • the means 9 engaging the cable comprises two jaws, which are movably arranged in a channel tapering in an upward direction within the counterweight 4.
  • the channel 13 for the cable extends between the jaws 9, which channel continues downwards through a device for operating the jaws 9.
  • This device includes a wheel 14 with a central hub 15, which is screwed into a holder 16 connected to the counterweight 4.
  • the hub 15 is engaged with the jaws 9 via cup springs 17, so that jaws 9 are brought into engagement with the cable by screwing the hub 15 in an upward direction.
  • the hub 15 When the counterweight 4 is to be disengaged from the cable the hub 15 is screwed in a direction away from the counterweight 4 until a flange 18 of the hub 15 comes into engagement with a pair of hooks 19 connected with the jaws 9, after which the jaws 9 are drawn downwards by means of the hooks l9 and are thereby released from the cable.
  • rolling elements 20 are arranged between these parts.
  • An elevator comprising a vertically oriented mast having a rack extending along said mast, a load carrier mounted for vertical movement along said mast, motor means carried by said load carrier and having an output gear in drive engagement with said rack for moving said load carrier along said mast, and counterweight means comprising a pulley mounted for rotation adjacent the top of said mast, a rotatable cable drum mounted at a fixed position adjacent the lower end of said mast, a counterweight cable attached at one of its ends to said load carrier and extending upwardly from said load carrier over said pulley and thence downwardly to said cable drum whereby the other end of said cable is always located at the lower end of said mast thereby to assure that the counterweight cable includes a section which always extends along the entire length of said mast on the side of said pulley opposite to said load carrier regardless of the position of said load carrier along said mast, said cable drum being operative to automatically take in and feed out said counterweight cable as the vertical position of said load carrier is varied along said mast, and a counterweight attached to said counterweight cable section between said pull
  • said load carrier comprises an elevator cage for movement along one side of said mast, said counterweight cable section extending along the entire length of said mast adjacent the side of said mast opposite to said cage.
  • said mast comprises a plurality of separable vertical sections to permit the height of said mast to be varied, said support member being vertically displaceable to assure that said pulley remains located adjacent the top of said mast as the height of said mast in varied.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Types And Forms Of Lifts (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Jib Cranes (AREA)
US454536A 1973-04-06 1974-03-25 Counterweight arrangement for a rack and pinion elevator Expired - Lifetime US3893542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7304892A SE371631B (enExample) 1973-04-06 1973-04-06

Publications (1)

Publication Number Publication Date
US3893542A true US3893542A (en) 1975-07-08

Family

ID=20317139

Family Applications (1)

Application Number Title Priority Date Filing Date
US454536A Expired - Lifetime US3893542A (en) 1973-04-06 1974-03-25 Counterweight arrangement for a rack and pinion elevator

Country Status (14)

Country Link
US (1) US3893542A (enExample)
JP (1) JPS49135350A (enExample)
AU (1) AU475864B2 (enExample)
BR (1) BR7402724D0 (enExample)
CA (1) CA993811A (enExample)
DE (1) DE2416366A1 (enExample)
DK (1) DK132392C (enExample)
ES (1) ES425047A1 (enExample)
FR (1) FR2224390B1 (enExample)
GB (1) GB1408881A (enExample)
IT (1) IT1005913B (enExample)
PL (1) PL88694B1 (enExample)
RO (1) RO64644A (enExample)
SE (1) SE371631B (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5179447A (ja) * 1974-12-27 1976-07-10 Hishino Kinzoku Kogyo Kk Rifutonokuraiminguhoho
AU581807B2 (en) * 1986-03-19 1989-03-02 R.A. Beatty & Associates Pty. Limited Vehicle hauling process and apparatus
DE3643662C1 (de) * 1986-12-18 1988-04-21 Mannesmann Ag Hub- und Senkstation fuer ein Schienenstueck
AU628569B2 (en) * 1989-05-25 1992-09-17 Krake Australia Pty Ltd Builders' lifts
CN107364813B (zh) * 2017-07-11 2018-05-22 河北卓达建材研究院有限公司 一种改进的柔性升降传动机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US699375A (en) * 1902-02-24 1902-05-06 John E Ericsson Safety appliance for elevators.
US3415343A (en) * 1967-04-18 1968-12-10 Alimak Verken Ab Catch apparatus for the cages of scaffold elevators and the like
US3519101A (en) * 1968-01-10 1970-07-07 Otis Elevator Co Construction elevator system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB956332A (en) * 1962-07-10 1964-04-22 Damjan Hladnik Improvements in vertically moving cable lifts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US699375A (en) * 1902-02-24 1902-05-06 John E Ericsson Safety appliance for elevators.
US3415343A (en) * 1967-04-18 1968-12-10 Alimak Verken Ab Catch apparatus for the cages of scaffold elevators and the like
US3519101A (en) * 1968-01-10 1970-07-07 Otis Elevator Co Construction elevator system

Also Published As

Publication number Publication date
CA993811A (en) 1976-07-27
SE371631B (enExample) 1974-11-25
PL88694B1 (enExample) 1976-09-30
FR2224390B1 (enExample) 1977-06-24
DK132392B (da) 1975-12-01
DE2416366A1 (de) 1974-10-24
BR7402724D0 (pt) 1974-11-19
AU475864B2 (en) 1976-09-02
AU6728874A (en) 1975-10-02
RO64644A (fr) 1979-01-15
IT1005913B (it) 1976-09-30
ES425047A1 (es) 1976-06-01
GB1408881A (en) 1975-10-08
JPS49135350A (enExample) 1974-12-26
FR2224390A1 (enExample) 1974-10-31
DK132392C (da) 1976-05-03

Similar Documents

Publication Publication Date Title
KR20030012146A (ko) 카운터웨이트를 이용한 기중 장치
CN111717805B (zh) 一种自升组合塔式起重机
US3080981A (en) Tower-crane cabin
CN201136745Y (zh) 便携式小型吊运机
US3893542A (en) Counterweight arrangement for a rack and pinion elevator
CN210480697U (zh) 一种建筑工程施工用物料提升机
CN117246922A (zh) 一种沥青拌和站用起吊结构
CN211366748U (zh) U型水泥槽起吊机构
CN210528295U (zh) 多功能运输装置
CN216868337U (zh) 一种带有钢丝排线的吊挂升降装置
CN111252683A (zh) 桥面吊机及其应用于拆桥的使用方法
CN214935512U (zh) 一种仓储物流吊装设备
CN217996587U (zh) 一种便于调节装配尺寸的pc构件用吊具
CN106315409A (zh) 一种具有调速功能的吊装架
CN114775990A (zh) 一种安全型装配式建筑用外挂作业平台
CN114180473A (zh) 一种基于5g通信施工设备
CN222042475U (zh) 一种用于铝合金固溶炉的旋转式自动装料装置
CN209940326U (zh) 一种施工现场用塔吊结构
CN209065243U (zh) 一种新型电梯升降机结构
CN208516720U (zh) 一种可固定轮椅的电梯
CN221093521U (zh) 一种新型的起升运行机构
CN218320156U (zh) 一种建筑安装工程用支撑架
CN222273993U (zh) 一种交替式物料运输升降机
SU1444269A1 (ru) Строительный подъемник
CN117819369B (zh) 一种建筑施工用起重机