WO2012108872A1 - Termination assembly - Google Patents

Termination assembly Download PDF

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Publication number
WO2012108872A1
WO2012108872A1 PCT/US2011/024432 US2011024432W WO2012108872A1 WO 2012108872 A1 WO2012108872 A1 WO 2012108872A1 US 2011024432 W US2011024432 W US 2011024432W WO 2012108872 A1 WO2012108872 A1 WO 2012108872A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame member
termination
tension member
socket
tension
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.)
Ceased
Application number
PCT/US2011/024432
Other languages
French (fr)
Inventor
Andres Monzon
Marcos Garcia
Ladislao GOMEZ-SAN JUAN
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.)
Otis Elevator Co
Original Assignee
Otis Elevator Co
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 Otis Elevator Co filed Critical Otis Elevator Co
Priority to PCT/US2011/024432 priority Critical patent/WO2012108872A1/en
Publication of WO2012108872A1 publication Critical patent/WO2012108872A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/04—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps
    • F16G11/044—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord
    • F16G11/046—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord by bending the cable around a surface

Definitions

  • the invention relates to a termination for a tension member of an elevator system.
  • the invention relates to a termination for a flat rope or belt that is part of a frame member in a machineroom-less elevator system.
  • Elevator systems typically include an elevator car and a counterweight connected and/or driven by several tension members such as ropes or belts.
  • a machine drives the tension members to move the counterweight and the car through the hoistway.
  • Machine room-less elevator systems locate the machine within the hoistway, for example in the space between the car and a wall, such that a machine room is not required.
  • the machine is mounted on a frame member, often a bedplate.
  • the ends of the tension members, or the "dead end hitches,” are provided on the bedplate.
  • the termination socket must should be easily accessible.
  • a termination comprises a wedge and a socket for receiving the wedge and a tension member.
  • the socket is part of a frame member of the elevator system.
  • the socket will contain at least one friction surface that interacts with the tension member.
  • the at least one friction surface is provided on an insert plate that is integrated with the frame member.
  • a frame member for supporting a component of an elevator system having a tension member comprises a mounting portion for the supporting component and a termination portion that forms a socket to receive a wedge and a tension member.
  • the frame member is supported by either a hoistway wall or a guide rail.
  • the frame member is a bedplate.
  • Fig. 1 is a schematic plan view of an exemplary elevator system.
  • FIG. 2 is a cross-sectional view of one embodiment of bedplate-termination assembly of the present invention.
  • Fig. 3 is an alternate embodiment of the bedplate -termination assembly.
  • An exemplary elevator system 10 illustrated in Figure 1 includes an elevator car 12 and a counterweight 14. Components not relevant to the present invention (e.g. controller, safeties, idler sheaves etc.) are not discussed.
  • At least one tension member 16 such as a rope or belt supports the weight of the elevator car 12 and the counterweight 14 in a known manner.
  • the machine 18 is mounted on a frame member 24.
  • the tension member 16 is supported on the machine sheave 20 which is coupled to the machine shaft. Frictional force between the tension member 16 and the machine sheave 20 causes the tension member to move during rotation of the machine shaft, which in turn moves the car 12 and the counterweight 14.
  • Opposed ends of the tension member 16 are attached at dead end hitches 23 and 25 respectively.
  • the dead end hitches 23 and 25 are located on the frame member 24.
  • the opposed ends and dead end hitches 23 and 25 may be located on separate frame members, and may be located on any suitable surface of each frame member.
  • Figure 1 portrays an elevator system with an overslung roping arrangement, but the present invention could be used with other arrangements, such as an underslung arrangement.
  • Figure 1 portrays a 2: 1 roping arrangement, the present invention could be used in systems with other roping arrangements.
  • the embodiment of the present invention as shown in Fig. 3 comprises a frame member 24 designed to incorporate the functionality of the termination socket 30 for a first end of at least one tension member 16.
  • the frame member may be supported by guide rails, the hoistway wall 22, or a combination thereof.
  • a reinforcement member or other structural features may be located above and/or below the frame member 24, however these are not required for the present invention.
  • the frame member 24 may provide the functionality of the termination socket 30 for at least a first end (counterweight side) of all of the tension members 16 used in the system.
  • the frame member 24 may be the bedplate that also supports the machine 18.
  • the frame member may be a plate located on either the car or counterweight side of the system between the corresponding rails.
  • the termination rod 26 and the corresponding dead end hitch 23 are no longer necessary for the termination of the first end of all of the tension members 16. Without a dead end hitch, vibration can easily transmit through a tension member 16.
  • the second end of a tension member 16 for example the end closest to the car side, could include a dead end hitch or utilize the arrangement of the present invention.
  • the frame member 24 is shaped such that it can receive and retain the end of a tension member 16 wrapped around the wedge 32.
  • the frame member 24 may be made from a single piece of bent sheet metal.
  • At least one of the surfaces of the frame member 24 that retain the wedge 32 and interface with the tension member 16 must have a high enough coefficient of friction to prevent slipping between the tension member 16 and the surface of the frame member 24.
  • one way to achieve such a coefficient of friction is to create a friction surface by roughening the surface of the frame member 24 in those areas that interact with the tension member 16 using a manufacturing process such as machining, knurling, or sandblasting.
  • insert plates 34 and 34' may be integrated or attached to the frame member 24 to provide the necessary contour to retain the wedge.
  • the surface of at least one insert plate 34 or 34' that interacts with the tension member 16 will similarly have a roughened friction surface as required to achieve the necessary coefficient of friction to prevent the tension member 16 from slipping.
  • the underside of the frame member 24 will be accessible by a mechanic for mounting additional elevator components 36 that may interface with the end of the tension member 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

A termination for a tension member having a wedge and a socket that receives the wedge and the tension member. The socket is part of a frame member of the elevator system.

Description

TERMINATION ASSEMBLY
BACKGROUND OF THE INVENTION
[001] The invention relates to a termination for a tension member of an elevator system. In particular, the invention relates to a termination for a flat rope or belt that is part of a frame member in a machineroom-less elevator system.
[002] Elevator systems typically include an elevator car and a counterweight connected and/or driven by several tension members such as ropes or belts. A machine drives the tension members to move the counterweight and the car through the hoistway. Machine room-less elevator systems locate the machine within the hoistway, for example in the space between the car and a wall, such that a machine room is not required. In conventional elevators, the machine is mounted on a frame member, often a bedplate. In some arrangements, the ends of the tension members, or the "dead end hitches," are provided on the bedplate. The termination socket must should be easily accessible.
[003] Such conventional arrangements require a significant number of parts to form each dead end hitch connected to a termination. During installation of the terminations in the hoistway and the installation of the belt into each termination, mechanics often struggle to easily thread the belt into the termination and necessary parts sometimes may fall down into the pit of the hoistway. SUMMARY OF THE INVENTION
[004] The present invention is directed to a termination assembly. According to one aspect of the invention, a termination comprises a wedge and a socket for receiving the wedge and a tension member. The socket is part of a frame member of the elevator system.
[005] Alternatively, in this or other aspects of the invention, the socket will contain at least one friction surface that interacts with the tension member.
[006] Alternatively, in this or other aspects of the invention, the at least one friction surface is provided on an insert plate that is integrated with the frame member.
[007] According to another aspect of the invention, a frame member for supporting a component of an elevator system having a tension member comprises a mounting portion for the supporting component and a termination portion that forms a socket to receive a wedge and a tension member.
[008] Alternatively, in this or other aspects of the invention, the frame member is supported by either a hoistway wall or a guide rail.
[008] Alternatively, in this or other aspects of the invention, the frame member is a bedplate. BRIEF DESCRIPTION OF THE DRAWINGS
[ 009] Fig. 1 is a schematic plan view of an exemplary elevator system.
[010] Fig. 2 is a cross-sectional view of one embodiment of bedplate-termination assembly of the present invention.
[01 1 ] Fig. 3 is an alternate embodiment of the bedplate -termination assembly.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[ 012] An exemplary elevator system 10 illustrated in Figure 1 includes an elevator car 12 and a counterweight 14. Components not relevant to the present invention (e.g. controller, safeties, idler sheaves etc.) are not discussed. At least one tension member 16 such as a rope or belt supports the weight of the elevator car 12 and the counterweight 14 in a known manner. The machine 18 is mounted on a frame member 24. The tension member 16 is supported on the machine sheave 20 which is coupled to the machine shaft. Frictional force between the tension member 16 and the machine sheave 20 causes the tension member to move during rotation of the machine shaft, which in turn moves the car 12 and the counterweight 14. Opposed ends of the tension member 16 are attached at dead end hitches 23 and 25 respectively. As shown, the dead end hitches 23 and 25 are located on the frame member 24. However, the opposed ends and dead end hitches 23 and 25 may be located on separate frame members, and may be located on any suitable surface of each frame member. Figure 1 portrays an elevator system with an overslung roping arrangement, but the present invention could be used with other arrangements, such as an underslung arrangement. Similarly, although Figure 1 portrays a 2: 1 roping arrangement, the present invention could be used in systems with other roping arrangements.
[013] An exemplary arrangement of a known frame member assembly is described in
US20060266592. Similarly, an exemplary termination for a tension member is described in EP1 140689.
[014] The embodiment of the present invention as shown in Fig. 3 comprises a frame member 24 designed to incorporate the functionality of the termination socket 30 for a first end of at least one tension member 16. The frame member may be supported by guide rails, the hoistway wall 22, or a combination thereof. A reinforcement member or other structural features may be located above and/or below the frame member 24, however these are not required for the present invention. The frame member 24 may provide the functionality of the termination socket 30 for at least a first end (counterweight side) of all of the tension members 16 used in the system. In one embodiment, the frame member 24 may be the bedplate that also supports the machine 18. In an alternate embodiment, the frame member may be a plate located on either the car or counterweight side of the system between the corresponding rails. Because the structural support and functionality of the termination socket 30 is incorporated into the frame member 24, the termination rod 26 and the corresponding dead end hitch 23 are no longer necessary for the termination of the first end of all of the tension members 16. Without a dead end hitch, vibration can easily transmit through a tension member 16. The second end of a tension member 16, for example the end closest to the car side, could include a dead end hitch or utilize the arrangement of the present invention. [015] To incorporate the functionality of the termination socket 30, the frame member 24 is shaped such that it can receive and retain the end of a tension member 16 wrapped around the wedge 32. As an example, the frame member 24 may be made from a single piece of bent sheet metal. At least one of the surfaces of the frame member 24 that retain the wedge 32 and interface with the tension member 16 must have a high enough coefficient of friction to prevent slipping between the tension member 16 and the surface of the frame member 24. As shown in Fig. 4, one way to achieve such a coefficient of friction is to create a friction surface by roughening the surface of the frame member 24 in those areas that interact with the tension member 16 using a manufacturing process such as machining, knurling, or sandblasting. In an alternate embodiment, as shown in Fig. 3, insert plates 34 and 34' may be integrated or attached to the frame member 24 to provide the necessary contour to retain the wedge. The surface of at least one insert plate 34 or 34' that interacts with the tension member 16 will similarly have a roughened friction surface as required to achieve the necessary coefficient of friction to prevent the tension member 16 from slipping. In another embodiment, the underside of the frame member 24 will be accessible by a mechanic for mounting additional elevator components 36 that may interface with the end of the tension member 16.

Claims

1. A termination for a tension member of an elevator system, comprising:
a wedge; and
a socket that receives the wedge and the tension member;
wherein the socket is part of a frame member of the elevator system.
2. The termination according to claim 1 wherein the socket contains at least one friction surface for interaction with the tension member.
3. The termination according to claim 4 wherein the at least one friction surface is provided on an insert plate integrated with the frame member.
4. A frame member for supporting a component of an elevator system having a tension member, comprising:
a mounting portion for supporting the component of the elevator system; and a termination portion forming a socket to receive a wedge and the tension member.
5. The frame member according to claim 6 wherein the frame member is supported by either a hoistway wall or a guide rail.
6. The frame member according to claim 6 wherein the frame member is a bedplate. The frame member according to claim 6 wherein the termination portion contains at least one friction surface for interaction with a tension member.
The frame member according to claim 9 wherein the at least one friction surface is provided on a plate integrated with the frame member.
PCT/US2011/024432 2011-02-11 2011-02-11 Termination assembly Ceased WO2012108872A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2011/024432 WO2012108872A1 (en) 2011-02-11 2011-02-11 Termination assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2011/024432 WO2012108872A1 (en) 2011-02-11 2011-02-11 Termination assembly

Publications (1)

Publication Number Publication Date
WO2012108872A1 true WO2012108872A1 (en) 2012-08-16

Family

ID=46638865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/024432 Ceased WO2012108872A1 (en) 2011-02-11 2011-02-11 Termination assembly

Country Status (1)

Country Link
WO (1) WO2012108872A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107428505A (en) * 2015-03-27 2017-12-01 奥的斯电梯公司 Elevator device suspension element terminates
US11111105B2 (en) 2017-01-26 2021-09-07 Otis Elevator Company Compliant shear layer for elevator termination

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010014996A1 (en) * 1998-12-31 2001-08-23 Otis Elevator Company Wedge clamp type termination for elevator tension member
US20020017434A1 (en) * 1999-01-27 2002-02-14 Jaakko Orrman Traction sheave elevator
US20020154944A1 (en) * 2001-04-18 2002-10-24 Traktovenko Boris G. Elevator load bearing termination assembly
US6513204B2 (en) * 2000-01-11 2003-02-04 Otis Elevator Company Flexible flat tension member termination device
US20030041419A1 (en) * 2001-09-07 2003-03-06 Perez Jose Sevilleja Elevator load bearing termination assembly with gripping inserts
WO2004069715A1 (en) * 2003-01-31 2004-08-19 Otis Elevator Company Integrated support for elevator machine, sheaves and terminations
JP2005350214A (en) * 2004-06-10 2005-12-22 Mitsubishi Electric Corp Elevator cable suspension system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010014996A1 (en) * 1998-12-31 2001-08-23 Otis Elevator Company Wedge clamp type termination for elevator tension member
US20020017434A1 (en) * 1999-01-27 2002-02-14 Jaakko Orrman Traction sheave elevator
US6513204B2 (en) * 2000-01-11 2003-02-04 Otis Elevator Company Flexible flat tension member termination device
US20020154944A1 (en) * 2001-04-18 2002-10-24 Traktovenko Boris G. Elevator load bearing termination assembly
US20030041419A1 (en) * 2001-09-07 2003-03-06 Perez Jose Sevilleja Elevator load bearing termination assembly with gripping inserts
WO2004069715A1 (en) * 2003-01-31 2004-08-19 Otis Elevator Company Integrated support for elevator machine, sheaves and terminations
JP2005350214A (en) * 2004-06-10 2005-12-22 Mitsubishi Electric Corp Elevator cable suspension system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107428505A (en) * 2015-03-27 2017-12-01 奥的斯电梯公司 Elevator device suspension element terminates
US20180079625A1 (en) * 2015-03-27 2018-03-22 Otis Elevator Company Elevator system suspension member termination
CN107428505B (en) * 2015-03-27 2020-02-18 奥的斯电梯公司 Elevator System Suspension Component Termination
US10689229B2 (en) 2015-03-27 2020-06-23 Otis Elevator Company Elevator system suspension member termination
US11111105B2 (en) 2017-01-26 2021-09-07 Otis Elevator Company Compliant shear layer for elevator termination

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