EP1709221B1 - Techniques d'assemblage d'elements de tension pour ascenseur - Google Patents

Techniques d'assemblage d'elements de tension pour ascenseur Download PDF

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Publication number
EP1709221B1
EP1709221B1 EP03800244A EP03800244A EP1709221B1 EP 1709221 B1 EP1709221 B1 EP 1709221B1 EP 03800244 A EP03800244 A EP 03800244A EP 03800244 A EP03800244 A EP 03800244A EP 1709221 B1 EP1709221 B1 EP 1709221B1
Authority
EP
European Patent Office
Prior art keywords
cord
cords
broken
wire
belt
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
EP03800244A
Other languages
German (de)
English (en)
Other versions
EP1709221A1 (fr
EP1709221A4 (fr
Inventor
Hugh J. O'donnell
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
Publication of EP1709221A1 publication Critical patent/EP1709221A1/fr
Publication of EP1709221A4 publication Critical patent/EP1709221A4/fr
Application granted granted Critical
Publication of EP1709221B1 publication Critical patent/EP1709221B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/08—Alarms or stop motions responsive to exhaustion or breakage of filamentary material fed from supply reels or bobbins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F7/00—Twisting wire; Twisting wire together
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
    • G07F19/20—Automatic teller machines [ATMs]
    • G07F19/201—Accessories of ATMs
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2064—Polyurethane resins
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2301/00—Controls
    • D07B2301/30—Signals indicating failure or excessive conditions, e.g. overheating
    • D07B2301/307—Breakage of wire or strand or rope
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2007—Elevators

Definitions

  • This invention generally relates to elevator tension members such as those used in belts or ropes. More particularly, this invention relates to handling and arranging tension member components within an assembly.
  • Elevator systems often include a car and counterweight supported by a rope or belt.
  • Conventional machines move the rope or belt to cause the desired movement of the car between levels within a building, for example.
  • steel ropes were used.
  • flat belt technology has been introduced.
  • the flat belts provide traction and bending fatigue resistance advantages.
  • One example flat belt arrangement includes a plurality of steel tension members encased in a polyurethane jacket.
  • the steel tension members may include a plurality of wires that are wound together to form cords, which serve as the tension members. It is possible for one or more wires to break at different times during the assembly process. A broken wire end that becomes entangled in the assembly machinery during the winding process or later when the jacket is applied to the tension members can cause a problem such as damage to the machinery or at least significantly interrupting production.
  • This invention provides alternatives for handling situations where one or more wires are broken during an elevator tension member or belt or rope assembly process.
  • this invention is a technique for effectively managing broken wires during an elevator tension member or rope or belt assembly process.
  • One preferred method of making an elevator tension member includes arranging a plurality of wires into at least one strand A plurality of strands are then arranged into at least one cord. The method includes determining if there is at least one broken wire end protruding from at least one of the strands or at least one of the cords while performing the corresponding arranging steps. If there is at least one broken wire, the ends of the wire are manipulated to prevent them from protruding away from the corresponding strand or cord.
  • any detected broken wire ends are inserted into the corresponding strand or cord.
  • the broken ends are twisted around at least one adjacent unbroken wire.
  • the broken ends are weaved among unbroken wires.
  • the broken wire ends are secured against an outer surface of the corresponding strand or cord. In one example, the broken wire ends are welded or brazed in place. In another example, the broken wire ends are adhesively secured in place.
  • Figure 1B shows an end of a jacketed rope 25 having a plurality of tension members 26 made much like the tension members 22 of the example in Figure 1A .
  • a polyurethane jacket 28 surrounds the tension members 26, which are wound together as a rope.
  • Figure 2 schematically illustrates an assembly process 30 where wire stock 32 of individual wires is provided to a cord winding machine 34 that first winds a plurality of wires into individual strands and then winds a plurality of strands into a cord.
  • the completed cords are placed on spools and eventually provided to a jacket application machine 36 where the cords are appropriately positioned and placed within the jacket 24 or 28 to form the belt or rope eventually sent to appropriate storage 38.
  • Known techniques can be used for each of the stages schematically shown in Figure 2 .
  • a plurality of wires 40 from the wire stock 32 are twisted in a known manner to establish a strand 42.
  • seven individual wires 40 are within each individual strand 42.
  • one of the wires 40 has a broken section with two ends 44 protruding away from the exterior of the strand 42. This condition is detected by a detector 50, which can be a known device as used in high speed winding machinery, for example. Once the broken ends 44 are detected, the winding machinery preferably is shut down so that the condition of the broken wire can be addressed. If the winding process continued, the broken wire would likely become entangled in the machinery causing significant problems and machine down time.
  • the broken ends 44 shown in Figure 3A are recaptured as part of the strand 42 in a manner that the broken ends do not protrude away from the strand such that there is any risk of entanglement with the belt manufacturing machinery.
  • the broken ends 44 are manipulated manually and inserted in between other ones of the wires 40 in the area of the broken ends.
  • Other example techniques include weaving the broken portions of the wires within the strand or twisting them around at least one adjacent unbroken wire. By tucking in the broken ends, they are effectively captured within the strand in a manner that they will not protrude out and cause difficulties for the machinery.
  • the broken wire ends are manipulated and placed against the strand.
  • An adhesive is applied to the strands 42 in the vicinity of the broken ends 44 such that the broken ends are secured in position as part of the strand and they do not protrude outward.
  • the ends 44 are welded or brazed in place against adjacent wires at the appropriate location along the strand. Any brazing or welding material preferably is kept from protruding in a manner that may interfere with the manufacturing process.
  • Another example includes welding or brazing the broken ends of a wire together.
  • the portion of a wire that protrudes outward is cut off so that the remaining portions are flush with the rest of the strand.
  • Figure 3B schematically illustrates a later portion of the process where the individual strands 42 are wound together to form a cord 46.
  • another detector 52 inspects the cords for broken wires protruding away from the exterior of the cord, for example.
  • broken wire ends 54 are detected and the machinery is stopped so that the broken wire ends can be recaptured into the cord. Any one of the example techniques described above are used in this stage of the process to again ensure no entanglements during later processing of the cords to form the elevator belt 20 or rope 25.
  • the detector 52 comprises known detecting components.
  • a cord Once a cord has passed inspection by the detector 52, it can be provided to a jacket application machine including an extruder, for example, for applying the polyurethane jacket 24 or 28 to establish the belt or rope configuration.
  • Figure 4 schematically illustrates a method of making one example belt assembly 20.
  • the jacket is extruded over the cords such that the jacket exterior is smooth, continuous and not interrupted by any grooves.
  • a cord supply 50 provides the cords 46.
  • the cord supply 50 comprises a plurality of spools containing the wound steel wire strands that form the cords 46.
  • the cords may be formed at the same facility as where the method of applying the jacket 24 is accomplished or the cords may be preformed and prespooled, depending on the needs of a particular situation.
  • a positioning device 52 aligns the cords 46 in a desired alignment so that the cords will extend parallel to a longitudinal axis of the belt assembly 20.
  • a tensioning device 54 controls an amount of tension on the cords 46 during the jacket application process. Although a single tension station 54 is schematically illustrated, multiple tension devices may be used along the assembly line of the belt assembly 20. For example, the same tension preferably is applied to the cords on both sides of the jacket application station 56.
  • the tension station 54 preferably includes a suitably programmed controller that monitors and controls the tension within a desired range.
  • the tension on each individual cord preferably is maintained at a desired level throughout the process of making the belt assembly so that the belt configuration or geometry is controlled as much as possible.
  • the tension on each individual cord may be different with respect to the other cords.
  • a base tension of approximately 50 Newtons is placed on each cord and a sample belt assembly is made.
  • the sample belt assembly preferably then is inspected to make sure that the geometry is as desired. If there are undesirable variations, such as a slight longitudinal curvature, the tension on one or more individual cords is adjusted to address the undesirable belt geometry variation. By making several samples and taking measurements and making adjustments, the necessary individual cord tensions to yield the desired belt geometry can be determined.
  • the tension on each individual cord preferably is significant enough so that the cord horizontal position remains the same throughout the jacket application process. Because this example includes eliminating cord supports in the jacket application portion of the manufacturing process, the tensions used during the example process may need to be higher than those that were used in supported cord techniques.
  • tension feedback devices (as known in the art) preferably are incorporated into the manufacturing equipment so that the tension on each individual cord can be monitored and adjusted as needed throughout the entire assembly process.
  • rollers 59 are included as part of or immediately after the jacket application station 56.
  • the rollers 59 preferably are Teflon coated.
  • the rollers 59 provide a surface treatment to the sheave-contacting surfaces of the belt assembly immediately after the application of the jacket material.
  • the rollers provide smooth, flat, parallel belt surfaces.
  • the rollers 59 may provide an embossed pattern on the jacket surfaces, for example.
  • the rollers 59 preferably are included because the elimination of the cord supports as used in conventional equipment introduces a need for additional dimensional control. The rollers 59 provide such additional dimensional control.
  • rollers 59 are positioned on opposite sides of the belt assembly (although only one roller is visible in the illustration of Figure 4 ).
  • the rollers 59 preferably extend across the entire width of the belt assembly for best dimensional control of the belt surfaces.
  • the rollers 59 are freewheeling and move responsive to movement of the belt assembly as it passes through the rollers. In another example, the rollers are motorized so that they move at a controlled rate.
  • the formed belt assembly 20 is then processed at a finishing station 60.
  • the finishing station 60 includes a forming device, a dimensional inspection device and a curing cold water bath where the jacket material and the cords within the material are cooled to a suitable temperature.
  • the inspection device such as a known laser triangulation measuring device, determines whether the desired geometry was achieved.
  • the resulting belt assembly 40 preferably is then stored at 62, for example on spools for shipment to various locations for installation in elevator systems.
  • the belt assembly 20 may be precut to specific lengths or may be provided in larger quantities where a technician at the installation selects the appropriate amount of belt material for a particular application.
  • Figure 5 schematically illustrates an example molding device 70 for applying the jacket 24 to the cords 46.
  • Conventional arrangements include a plurality of cord supports, which cause the formation of grooves in at least one exterior surface on the belt assembly 20. Because this invention includes eliminating such grooves, a typical cord supporting arrangement having such cord supports preferably is not used.
  • condition of the cords is inspected as part of the jacket application process to prevent any difficulties that might otherwise occur because of stray wire ends.
  • Another detector like those described above may be associated with the forming device 70 at appropriate locations to ensure appropriate wire placement during the belt manufacturing process.
  • the mold housing 72 includes one or more openings 79 through which the jacket material is applied to the cords using pressure injection.
  • pressure injection can be used for molding materials such as polyurethane when the material is suitably heated. Given this description, those skilled in the art will be able to select appropriate conditions for achieving a desired result.
  • the molding device 70 includes an opening 80 at an output side 82 of the mold housing 72.
  • the opening 80 preferably is shaped to control the exterior shape and surfaces on the belt assembly 20.
  • the opening 80 of the molding device 70 in the example of Figure 6 has a non-linear configuration along the portions of the opening that form the sheave-contacting belt surfaces.
  • the non-linear configuration provides for differences in the thickness of the belt assembly as seen across the width.
  • the portions of the belt assembly corresponding to the locations of the cords 46 have a reduced thickness compared to the portions of the belt assembly where no cords are present.
  • the varying, non-linear configuration of the surfaces 86 and 88 are designed to accommodate the variation in the amount of shrinkage across the width of the belt that will occur during the finishing and curing of the belt assembly. It is believed that the amount of shrinkage corresponds to the cross section of urethane jacket material. In the areas where the cords 46 are present, there will be less shrinkage because of the presence of the cord material, which in some examples is steel. The portions of the belt assembly where cords are not present has a temporary greater thickness because there will be more shrinkage at those points of the assembly.
  • the length of belt or rope stock and cord stock is significantly enhanced. If the sections of strand or cord were simply cut each time a wire was broken, there would be an undesirable amount of material scrap and many potentially unuseful lengths for most elevator installations.
  • Using the example techniques described above provides for significant enhancement of the length of cord and belt stock.
  • the length of belt without any cut-and-weld joints in the tension members can be on the order of 13 km. Accordingly, the example techniques make the tension member manufacturing process far more economical and efficient.
  • the example embodiments may include one or more broken wires at some point.
  • one broken wire presents approximately a 2% loss of continuous wire tension-bearing capability. This minor difference does not appreciably affect strength because so many of the wires are intact and there are a plurality of cords, some or a majority of which may have no wire breaks at all.
  • broken wires are manageable in a manner that increases manufacturing efficiency and the economies associated with making and installing elevator belts and ropes.

Claims (9)

  1. Procédé de fabrication d'un élément de tension à utiliser dans un système d'ascenseur, comprenant les étapes suivantes:
    (A) arranger une pluralité de fils (40) de manière à former au moins un toron (42);
    (B) arranger une pluralité de torons (42) de manière à former au moins une corde (46);
    (C) déterminer s'il y a au moins une extrémité de fil cassée qui fait saillie au niveau d'au moins un des torons (42) ou au niveau d'au moins une des cordes (46) tout en exécutant les étapes (A) et (B); et
    (D) manipuler l'extrémité de fil cassée (44, 54) pour empêcher l'extrémité de fil de faire saillie.
  2. Procédé selon la revendication 1, dans lequel l'étape (D) comprend l'insertion de l'extrémité de fil cassée (44, 54) dans le toron correspondant (42) ou dans la corde correspondante (46).
  3. Procédé selon la revendication 1, dans lequel l'étape (D) comprend la fixation de l'extrémité de fil cassée (44, 54) contre une surface extérieure du toron correspondant (42) ou de la corde correspondante (46).
  4. Procédé selon la revendication 3, dans lequel l'étape (D) comprend le brasage de l'extrémité de fil (44, 54) sur une partie d'au moins un fil intact voisin.
  5. Procédé selon la revendication 3, dans lequel l'étape (D) comprend le soudage de l'extrémité de fil (44, 54) sur une partie d'au moins un fil intact voisin.
  6. Procédé selon la revendication 3, dans lequel l'étape (D) comprend la fixation de l'extrémité de fil cassée (44, 54) sur une partie d'au moins un fil intact voisin en utilisant des moyens adhésifs.
  7. Procédé selon la revendication 1, dans lequel l'étape (D) comprend la torsion de l'extrémité de fil cassée (44, 54) autour d'une partie d'au moins un fil intact voisin.
  8. Procédé selon la revendication 1, dans lequel l'étape (D) comprend la coupe d'une partie saillante du fil.
  9. Procédé selon l'une quelconque des revendications précédentes, comprenant l'application d'au moins une gaine (24) sur ladite au moins une corde, et l'exécution des étapes (C) et (D) en association avec l'étape d'application de la gaine (24).
EP03800244A 2003-12-22 2003-12-22 Techniques d'assemblage d'elements de tension pour ascenseur Expired - Lifetime EP1709221B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2003/041387 WO2005068696A1 (fr) 2003-12-22 2003-12-22 Techniques d'assemblage d'elements de tension pour ascenseur

Publications (3)

Publication Number Publication Date
EP1709221A1 EP1709221A1 (fr) 2006-10-11
EP1709221A4 EP1709221A4 (fr) 2009-02-25
EP1709221B1 true EP1709221B1 (fr) 2010-10-20

Family

ID=34793602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03800244A Expired - Lifetime EP1709221B1 (fr) 2003-12-22 2003-12-22 Techniques d'assemblage d'elements de tension pour ascenseur

Country Status (10)

Country Link
US (1) US20070277496A1 (fr)
EP (1) EP1709221B1 (fr)
JP (1) JP2007524549A (fr)
CN (1) CN1886538B (fr)
AT (1) ATE485409T1 (fr)
AU (1) AU2003299979A1 (fr)
DE (1) DE60334647D1 (fr)
ES (1) ES2350447T3 (fr)
HK (1) HK1099568A1 (fr)
WO (1) WO2005068696A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8449349B2 (en) * 2004-03-15 2013-05-28 Otis Elevator Company Elevator load bearing member having a jacket with at least one rough exterior surface
EP2940201B1 (fr) 2010-05-13 2018-07-04 Otis Elevator Company Procédé de fabrication d'un tissu tissé présentant un espacement désiré entre les éléments de tension
KR20140006982A (ko) 2011-04-14 2014-01-16 오티스 엘리베이터 컴파니 엘리베이터 시스템을 위한 코팅 로프 또는 벨트
US20180222721A1 (en) * 2017-02-06 2018-08-09 Otis Elevator Company Elevator tension member
CN110539572B (zh) * 2018-05-28 2021-07-30 保定钞票纸业有限公司 具有机读性能和/或机读编码功能的防伪安全带及防伪纸
CN113123151A (zh) * 2021-04-26 2021-07-16 朱淑粉 一种预应力钢绞线生产加工方法

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Also Published As

Publication number Publication date
CN1886538A (zh) 2006-12-27
HK1099568A1 (en) 2007-08-17
CN1886538B (zh) 2012-05-23
WO2005068696A1 (fr) 2005-07-28
ES2350447T3 (es) 2011-01-24
DE60334647D1 (de) 2010-12-02
EP1709221A1 (fr) 2006-10-11
ATE485409T1 (de) 2010-11-15
JP2007524549A (ja) 2007-08-30
US20070277496A1 (en) 2007-12-06
AU2003299979A1 (en) 2005-08-03
EP1709221A4 (fr) 2009-02-25

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