EP1555235A1 - Appareil de levage pour elevateur - Google Patents

Appareil de levage pour elevateur Download PDF

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Publication number
EP1555235A1
EP1555235A1 EP03738615A EP03738615A EP1555235A1 EP 1555235 A1 EP1555235 A1 EP 1555235A1 EP 03738615 A EP03738615 A EP 03738615A EP 03738615 A EP03738615 A EP 03738615A EP 1555235 A1 EP1555235 A1 EP 1555235A1
Authority
EP
European Patent Office
Prior art keywords
rope
pressing
sheave
elevator
pressing roller
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Withdrawn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
EP03738615A
Other languages
German (de)
English (en)
Inventor
Motoshisa c/o Tsu Plant of TS Corp. YAMAMURA
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.)
Nabtesco Corp
Original Assignee
TS 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 TS Corp filed Critical TS Corp
Publication of EP1555235A1 publication Critical patent/EP1555235A1/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Withdrawn legal-status Critical Current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
    • B66B15/00—Main component parts of mining-hoist winding devices
    • B66B15/02—Rope or cable carriers
    • B66B15/04—Friction sheaves; "Koepe" pulleys
    • 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
    • B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave

Definitions

  • the present invention relates to a hosing system for a traction type elevator. More particularly, the invention relates to a hoisting system for an elevator which includes a sheave connected to a motor for rotation a rope wrapped around an outer circumferential surface of the sheave for lifting up and down an elevator car.
  • FIG. 5 A hoisting system for a conventional traction type elevator will be described in Fig. 5.
  • a sheave 1 is connected to a motor (not shown) for rotation.
  • a rope 2 is wrapped around an outer circumferential surface of the sheave 1.
  • An elevator car 3 is connected to a suspending portion of the rope 2.
  • a counterweight 4 is connected to the other suspending portion of the rope 2.
  • the elevator car 3 When the motor is driven to rotate, the elevator car 3 can be lifted up and down through the rotation of the sheave 1 and vertical movements of the rope 2.
  • the rotational driving force of the motor is transmitted to the rope 2 by making use of only a frictional force between the outer circumferential surface of the sheave 1 and an circumferential surface of the rope 2.
  • the frictional force is obtained from friction coefficients of the sheave 1 and the rope 2 and tension exerted by the elevator car 3 and the counterweight 4.
  • the invention was made in view of the above situation, and an object thereof is to provide a hoisting system for an elevator which can reduce the weight of a traction type elevator system.
  • a hoisting system for an elevator including a sheave connected to a motor for rotation and a rope wrapped around an outer circumferential surface of the sheave so as to lift up and down an elevator car, the hoisting system being characterized by having a pressing roller for pressing the rope against the outer circumferential surface of the sheave.
  • the invention is characterized in that the pressing roller is rotatably supported on a non-rotational member and is characterized by having a pressing means for pressing the roller against the rope. Consequently, the rotation of the pressing roller becomes smooth, and a strong pressing force against the rope and the sheave can be generated.
  • the invention is characterized in that the pressing roller has in its outer circumference an arc-like groove which is brought into engagement with the rope. Consequently, the contact area of the pressing roller to the rope is increased, and the frictional force between the pressing roller and the rope can be increased.
  • the invention is characterized in that the outer circumference of the pressing roller is made of an elastic material. Namely, the outer circumference of the pressing roller can be deformed into an arc by following the circumference of the rope. Consequently, the contact area of the pressing roller to the rope is increased, and the frictional force between the pressing roller and the rope can be increased.
  • the invention is characterized in that the pressing roller is made up of at least a pair of pressing rollers which are disposed substantially symmetrically relative to a rotating center of the sheave. Consequently, when compared with a case where a single pressing roller is provided, the frictional force between the pressing rollers and the rope can be increased.
  • the invention is characterized in that the pressing roller is movable relative to the rope. Consequently, the invention can deal with ropes of various rope diameters.
  • the invention is characterized by including a belt wrapped between the pair of pressing rollers, whereby the pair of pressing rollers press the rope against the outer circumferential surface of the sheave via the belt wrapped between the pair of pressing rollers. Consequently, the contact area of the pressing rollers to the rope via the belt can be increased, whereby the frictional force between the rollers and the rope via the belt can be increased.
  • reference numeral 100 denotes a hoisting system for an elevator which is applied to a traction type elevator system.
  • a fixing member 10 is mounted on a stationary location of the traction type elevator system.
  • the rotation of a motor (not shown) is transmitted to an input portion 111 of a sheave 11 via reduction gears (not shown). Namely, the sheave 11 is connected to the motor for rotation.
  • a rope 12 is wrapped around a groove portion 131 in an outer circumferential surface 13 of the sheave 11 so as to lift up and down an elevator car 14.
  • the elevator car 14 is connected to a suspending portion of the rope 12.
  • a counterweight 15 is connected to the other suspending portion of the rope 12.
  • a pair of pressing rollers 16 are disposed substantially symmetrically relative to a rotating center of the sheave 11, so that the rope 12 is pressed against the outer circumferential surface 13 of the sheave 11.
  • the pair of pressing rollers 16 are disposed substantially symmetrically in a lateral direction relative to a vertical including the rotating center of the sheave 11.
  • the pair of pressing rollers 16 has in the outer circumference thereof an arc-like groove 17 which is brought into engagement with the rope.
  • Each pressing roller 16 is rotatably supported on a shaft 18 (a non-rotational member) via a pair of bearings 19.
  • a spring 20 presses each pressing roller 16 against the rope 12. Since each spring 20 can expand and contract, each pressing roller is movable relative to the rope.
  • the pressing force of each pressing roller 16 against the rope 12 can be adjusted appropriately by allowing a fixing portion where the pressing means (the spring 20) is fixed to the fixing member 10 to move relative to the fixing member 10.
  • the pressing force of each pressing roller 16 against the rope 12 can be adjusted appropriately by setting an appropriate spring constant for the spring 20.
  • Shaft snap rings 23 are used not only to locate the pair of bearings 19 but also to prevent the dislocation thereof.
  • the pair of pressing rollers 16 are pressing the rope 12 against the outer circumferential surface of the sheave 11 via the springs 20 at all times. Namely, the frictional force between the outer circumferential surface of the sheave 11 and the circumferential surface of the rope 12 is increased by the pair of pressing rollers 16. Consequently, the weights of the elevator car 3 and the counterweight 4 can be reduced.
  • each pressing roller 200 a cylindrical elastic body 202 of a rubber or silicone is held around an outer circumference of a metallic roller main body 201. Similar to the pressing roller of the first embodiment, the roller main body 201 is rotatably supported on a shaft 203 (a non-rotational member) via a pair of bearings 204.
  • the elastic body 202 is separately held on the outer circumference of the pressing roller 200, but the roller main body 201 itself may form a cylindrical elastic body.
  • reference numeral 300 denotes a hoisting system for an elevator which is applied to a traction type elevator system.
  • a fixing member 310 is mounted on a stationary location of the traction type elevator system.
  • the rotation of a motor (not shown) is transmitted to an input portion 333 of a sheave 311 via reduction gears (not shown). Namely, the sheave 311 is connected to the motor for rotation.
  • a rope 312 is wrapped around a groove portion (not shown) in an outer circumferential surface 313 of the sheave 311 so as to lift up and down an elevator car (not shown).
  • the elevator car is connected to a suspending portion of the rope 312.
  • a counterweight (not shown) is connected to the other suspending portion of the rope 312.
  • a pair of pressing rollers 316 are disposed substantially symmetrically relative to a rotating center of the sheave 311, so that the rope 312 is pressed against the outer circumferential surface 313 of the sheave 311.
  • the pair of pressing rollers 316 are disposed substantially symmetrically in a lateral direction relative to a vertical including the rotating center of the sheave 311.
  • a belt 317 is wrapped around outer circumferential surfaces of the pair of pressing rollers 316. The pair of pressing rollers 316 press the rope 312 against the outer circumferential surface of the sheave 311 via the belt 317.
  • each pressing roller 316 is rotatably supported on a shaft 318 (a non-rotational member) via a pair of bearings (not shown).
  • a spring 320 presses each pressing roller 316 against the rope 312. Since each spring3 20 can expand and contract, each pressing roller 316 is movable relative to the rope 312.
  • An end of the spring 320 is supported on the fixing member 310 and the other end thereof is connected to a circumferential groove (not shown) in the shaft 318.
  • the pair of pressing rollers 316 are pressing the rope 312 against the outer circumferential surface of the sheave 311 via the belt 317 by the springs 320 at all times. Namely, the contact area (contact resistance) of the pressing rollers 316 to the rope 312 via the belt 317 is increased, whereby the frictional force between the pressing rollers 316 and the rope 312 via the belt 317 can be increased (a greater frictional resistance).
  • the roping mode has been described as a 1-to-1 mode, the invention is not limited to the 1-to-1 roping mode.
  • the hoisting system for an elevator which can reduce the weight of a traction type elevator system.
  • the rotation of the pressing roller becomes smooth, and a strong pressing force against the rope and the sheave can be generated.
  • the contact area of the pressing roller to the rope is increased, and the frictional force between the pressing roller and the rope can be increased.
  • the contact area of the pressing roller to the rope is increased, and the frictional force between the pressing roller and the rope can be increased.
  • the frictional force between the pressing rollers and the rope can be increased.
  • the invention can deal with ropes of various rope diameters.
  • the contact area of the pressing rollers to the rope via the belt can be increased, whereby the frictional force between the rollers and the rope via the belt can be increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP03738615A 2002-07-03 2003-07-01 Appareil de levage pour elevateur Withdrawn EP1555235A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002195299 2002-07-03
JP2002195299 2002-07-03
PCT/JP2003/008368 WO2004005179A1 (fr) 2002-07-03 2003-07-01 Appareil de levage pour elevateur

Publications (1)

Publication Number Publication Date
EP1555235A1 true EP1555235A1 (fr) 2005-07-20

Family

ID=30112331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03738615A Withdrawn EP1555235A1 (fr) 2002-07-03 2003-07-01 Appareil de levage pour elevateur

Country Status (7)

Country Link
EP (1) EP1555235A1 (fr)
JP (1) JPWO2004005179A1 (fr)
KR (1) KR20050037517A (fr)
CN (1) CN1681730A (fr)
AU (1) AU2003246203A1 (fr)
TW (1) TW200401743A (fr)
WO (1) WO2004005179A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5083595B2 (ja) * 2007-02-20 2012-11-28 株式会社ダイフク スタッカークレーンにおける昇降装置
CN102174952A (zh) * 2011-03-03 2011-09-07 浙江工业大学 一种基于滚轮压紧的钢带传动装置
KR101054013B1 (ko) * 2011-04-14 2011-08-04 주식회사 한테크 슬립 방지형 엘리베이터 권상장치
CN102756958A (zh) * 2012-08-06 2012-10-31 吴江信谊精密五金有限公司 电梯曳引绳保护装置
CN116902839A (zh) * 2023-06-14 2023-10-20 云南省水利水电工程有限公司 一种具有报警停止作业功能的起重安全监控装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS524814B2 (fr) * 1972-01-10 1977-02-07
JPS5024962A (fr) * 1973-07-06 1975-03-17
JPH11292423A (ja) * 1998-04-15 1999-10-26 Hitachi Building Systems Co Ltd エレベータの据付装置
KR100550493B1 (ko) * 2001-02-16 2006-02-09 후지텍크가부시키가이샤 왕복 이동체 구동 기구 및 이를 이용한 엘리베이터 장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004005179A1 *

Also Published As

Publication number Publication date
KR20050037517A (ko) 2005-04-22
AU2003246203A1 (en) 2004-01-23
WO2004005179A1 (fr) 2004-01-15
JPWO2004005179A1 (ja) 2005-11-04
CN1681730A (zh) 2005-10-12
TW200401743A (en) 2004-02-01

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