EP3205617A1 - Élément de tension d'ascenseur - Google Patents

Élément de tension d'ascenseur Download PDF

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Publication number
EP3205617A1
EP3205617A1 EP17155315.9A EP17155315A EP3205617A1 EP 3205617 A1 EP3205617 A1 EP 3205617A1 EP 17155315 A EP17155315 A EP 17155315A EP 3205617 A1 EP3205617 A1 EP 3205617A1
Authority
EP
European Patent Office
Prior art keywords
wires
yarn
cord
cords
yarn threads
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.)
Granted
Application number
EP17155315.9A
Other languages
German (de)
English (en)
Other versions
EP3205617B1 (fr
Inventor
John P. Wesson
Huan ZHANG
Scott Alan EASTMAN
Gopal R. Krishnan
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 EP3205617A1 publication Critical patent/EP3205617A1/fr
Application granted granted Critical
Publication of EP3205617B1 publication Critical patent/EP3205617B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66B7/10—Arrangements of ropes or cables for equalising rope or cable tension
    • 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
    • B66B7/062—Belts
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/48—Tyre cords
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/0613—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the rope configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2095—Auxiliary components, e.g. electric conductors or light guides
    • D07B2201/2097—Binding wires
    • D07B2201/2098—Binding wires characterized by special properties or the arrangements of the binding wire
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/404—Heat treating devices; Corresponding methods
    • D07B2207/4059—Heat treating devices; Corresponding methods to soften the filler material
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2095—Improving filler wetting respectively or filler adhesion
    • 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

  • the subject matter disclosed herein relates to tension members such as those used in coated belts of elevator systems for suspension and/or driving of the elevator car and/or counterweight.
  • Tension members for elevators typically include a one or more cords formed from a plurality of steel wires arranged in a geometrically stable configuration. Depending on wire diameters, only a certain number of geometrically stable arrangements are possible. Cords are often arranged into a belt which comprises a plurality of such cords at least partially enclosed in an elastomeric jacket material.
  • Adhesion and load transfer between the steel tension members in a coated belt provides a critical load path.
  • bonding stabilizes the construction of multi-wire, multi-strand steel cord. This helps minimize fretting, wear and wire breakage. In cases where wire breakage occurs, the bonding with the elastomer jacket will hold the broken wire in place, reducing further damage to the strand, cord and belt.
  • a belt for suspending and/or driving an elevator car includes a plurality of cords.
  • Each cord includes a plurality of wires and at least one yarn thread disposed at an outer periphery of the plurality of wires.
  • An elastomeric jacket substantially retains the plurality of cords.
  • the at least one yarn thread is configured to promote adhesion of the elastomeric jacket to the plurality of cords and reduce fretting of the plurality of wires.
  • the at least one yarn thread is helically wrapped around the plurality of wires.
  • the at least one yarn thread is at least two yarn threads wrapped helically around the plurality of wires, the at least two yarn threads having equal lay lengths around the plurality of wires.
  • the at least one yarn thread is at least two yarn threads wrapped helically around the plurality of wires, the at least two yarn threads having opposite lay directions around the plurality of wires.
  • the at least one yarn thread comprises a fabric sleeve disposed at an outer periphery of the plurality of wires.
  • the fabric sleeve comprises at least two yarn threads woven or braided into the fabric sleeve.
  • the at least one yarn thread is formed from a polyester, nylon polyurethane, cotton, wool, rayon, fluoropolymer, or Kevlar material.
  • the plurality of wires are arranged into a plurality of strands, the plurality of strands arranged into the cord, at least one strand of the plurality of strands including at least one yarn thread disposed at an outer periphery of the at least one strand.
  • a method of forming a belt for suspending and/or driving an elevator car includes arranging a plurality of wires into a cord, arranging one or more yarn threads at an outer periphery of the plurality of wires, arranging a plurality of cords into a selected arrangement and applying an elastomeric jacket to the plurality of cords to retain the plurality of cords in the selected arrangement.
  • the one or more yarn threads are configured to promote adhesion of the elastomeric jacket to the plurality of cords and reduce fretting of the plurality of wires
  • the one or more yarn threads are arranged at the outer periphery of the plurality of wires prior to a cord closing operation performed on the plurality of wires to arrange the plurality of wires into a cord.
  • the one or more yarn threads are helically wound around the plurality of wires.
  • two or more yarn threads are helically wound around the plurality of wires, the two or more yarn threads having equal lay lengths.
  • two or more yarn threads are helically wound around the plurality of wires, the two or more yarn threads having opposite lay directions.
  • the one or more yarn threads are formed into a fabric sleeve around the plurality of wires.
  • the fabric sleeve is formed via one of a weaving or braiding process.
  • the one or more yarn threads are partially melted prior to applying the elastomeric jacket to promote adhesion of the one or more yarn threads to the plurality of wires.
  • the plurality of wires are arranged into a strand, one or more yarn threads are located at an outer periphery of the plurality of wires and a plurality of strands are formed into the cord.
  • FIGS. 1A , 1B and 1C are schematics of exemplary traction elevator systems 10.
  • the elevator system 10 includes an elevator car 12 operatively suspended or supported in a hoistway 14 with one or more belts 16.
  • the one or more belts 16 interact with one or more sheaves 18 to be routed around various components of the elevator system 10.
  • the one or more belts 16 could also be connected to a counterweight 22, which is used to help balance the elevator system 10 and reduce the difference in belt tension on both sides of the traction sheave during operation.
  • the sheaves 18 each have a diameter 20, which may be the same or different than the diameters of the other sheaves 18 in the elevator system 10. At least one of the sheaves 18 could be a drive sheave.
  • the drive sheave 52 is driven by a machine 26. Movement of the drive sheave 52 by the machine 26 drives, moves and/or propels (through traction) the one or more belts 16 that are routed around the drive sheave 52.
  • At least one of the sheaves 18 could be a diverter, deflector or idler sheave. Diverter, deflector or idler sheaves are not driven by a machine 50, but help guide the one or more belts 16 around the various components of the elevator system 10.
  • the elevator system 10 could use two or more belts 16 for suspending and/or driving the elevator car 12.
  • the elevator system 10 could have various configurations such that either both sides of the one or more belts 16 engage the one or more sheaves 18 (such as shown in the exemplary elevator systems in FIGS. 1A , 1B or 1C ) or only one side of the one or more belts 16 engages the one or more sheaves 18.
  • FIG 1A provides a 1:1 roping arrangement in which the one or more belts 16 terminate at the car 12 and counterweight 22.
  • FIGS. 1B and 1C provide different roping arrangements. Specifically, FIGS. 1B and 1C show that the car 12 and/or the counterweight 22 can have one or more sheaves 18 thereon engaging the one or more belts 16 and the one or more belts 16 can terminate elsewhere, typically at a structure within the hoistway 14 (such as for a machineroomless elevator system) or within the machine room (for elevator systems utilizing a machine room.
  • the number of sheaves 18 used in the arrangement determines the specific roping ratio (e.g. the 2:1 roping ratio shown in FIGS. 1B and 1C or a different ratio).
  • FIG 1C also provides a so-called rucksack or cantilevered type elevator.
  • the present invention could be used on elevator systems other than the exemplary types shown in FIGS. 1A , 1B and 1C .
  • FIG. 2 provides a schematic of an exemplary belt construction or design.
  • Each belt 16 is constructed of one or more cords 24 in a jacket 26.
  • the cords 24 of the belt 16 could all be identical, or some or all of the cords 24 used in the belt 16 could be different than the other cords 24.
  • one or more of the cords 24 could have a different construction or size than the other cords 24.
  • the belt 16 has an aspect ratio greater than one (i.e. belt width is greater than belt thickness).
  • the belts 16 are constructed to have sufficient flexibility when passing over the one or more sheaves 18 to provide low bending stresses, meet belt life requirements and have smooth operation, while being sufficiently strong to be capable of meeting strength requirements for suspending and/or driving the elevator car 12.
  • the jacket 26 could be any suitable material, including a single material, multiple materials, two or more layers using the same or dissimilar materials, and/or a film.
  • the jacket 26 could be a polymer, such as an elastomer, applied to the cords 24 using, for example, an extrusion or a mold wheel process.
  • the jacket 26 could be a woven fabric that engages and/or integrates the cords 24.
  • the jacket 26 could be one or more of the previously mentioned alternatives in combination.
  • the jacket 26 can substantially retain the cords 24 therein.
  • the phrase substantially retain means that the jacket 26 has sufficient engagement with the cords 24 such that the cords 24 do not pull out of, detach from, and/or cut through the jacket 26 during the application on the belt 16 of a load that can be encountered during use in an elevator system 10 with, potentially, an additional factor of safety.
  • the cords 24 remain at their original positions relative to the jacket 26 during use in an elevator system 10.
  • the jacket 26 could completely envelop the cords 24 (such as shown in FIG. 2 ), substantially envelop the cords 24, or at least partially envelop the cords 24.
  • each cord 24 comprises a plurality of wires 28 in a geometrically stable arrangement.
  • the wires 28 are formed from steel or other load-carrying material.
  • the steel wires 28 provide the tensile strength of the cord 24 and determine the bending stress of the cord 24 which, in turn, determines the cord 24 life.
  • some or all of these wires 28 could be formed into strands 30, which are then formed into the cord 24.
  • the phrase geometrically stable arrangement means that the wires 28 (and if used, strands 30) generally remain at their theoretical positions in the cord 24.
  • movement of the wires 28 (and if used, strands 30) relative to each other is limited.
  • relative movement of wire 28 could be limited to less than approximately thirty percent (30%) of its diameter.
  • Relative movement of strand 30 could be limited to less than approximately five percent (5%) of its diameter.
  • the cord 24 includes improvements to increase adhesion of the elastomeric jacket 26 material to the cord 24, and to reduce fretting of the cord 24, thus improving a service life of the cord 24 and thus the belt 16 in which the cord 24 is installed.
  • a plurality of fabric yarn threads 32 or elements are incorporated into the cord 24.
  • the yarn threads 32 are organic materials that bond more easily to the thermoplastic elastomer of the jacket 26 than do the steel materials of the cord 24.
  • the yarn threads 32 may be formed from, for example, polyester, nylon, polyurethane, cotton, wool, rayon, fluoropolymer, Kevlar or other materials.
  • the yarn threads 32 may be treated with, for example, an adhesive, thermoplastic, or hot melt adhesive material to improve adhesion of the yarn threads 32 to the steel cord 24 and/or to improve adhesion of the jacket 26 material to the yarn threads 32. Further, the yarn threads 32 may include other additives, such as those to inhibit corrosion of the steel cord 24.
  • the yarn threads 32 are incorporated into the cord 24 at a cord closing operation of cord 24 manufacture.
  • the individual strands 30 of the cord 24 are brought together by, for example, twisting and/or other operations to form a unitary cord 24.
  • the yarn threads 32 may be fed into a cord closing apparatus 34 along with the strands 30 and "closed" into the cord 24 during this operation.
  • the yarn threads 32 are shown at an outer periphery of the cord 24, it is to be appreciated that in other embodiments, the yarn threads 32 may alternatively or additionally be located at an interior of the cord 24, for example, between adjacent strands 30 and/or between adjacent wires 28 of the same strand 30.
  • the cords 24 of the belt 16 are arranged into desired positions, and the jacket 26 material is applied by, for example an extrusion process at jacket extruder 36.
  • the yarn threads 32 may be heated to a partially melted condition either prior to reaching the jacket extruder 36 or at the jacket extruder 36. The partial melting of the yarn threads 32 increases adhesion of the yarn threads 32 to the cord 24 and allows the yarn thread 32 material to penetrate between wires 28 of the cord 24.
  • one or more yarn threads 32 are wrapped around the cord 24 in a helical arrangement.
  • the yarn threads 32 are spaced along a length of the cord 24 to allow for a selected amount of jacket 26 material penetration when the jacket material 26 is applied to the cord 24.
  • yarn threads 32 may be wrapped in parallel around the cord 24 and have equal lay lengths, while in other embodiments, such as shown in FIG. 7 , yarn threads 32a and 32b may have unequal lay lengths resulting in the crossing of yarn threads 32a and 32b along the length of the cord 24. Further, in other embodiments, such as shown in FIG.
  • yarn threads 32a and 32b may be wrapped around cord 24 in opposite lay directions. While in the embodiments shown in FIGs. 6-8 the yarn threads 32 are helically wrapped around cords 32 after the cord 24 closing operation, it is to be appreciated that, in other embodiments, one or more strands 30 of the cord 24 may be helically wrapped with yarn threads 32, then the strands 30 are formed into cord 24.
  • a braiding or weaving process is utilized to sheath the cord 24 in a fabric sleeve 38 formed from a plurality of yarn threads 32.
  • the fabric sleeve 38 may be co-formed with the belt 16 after the cord 24 closing process and before application of the jacket 26 material.
  • the fabric sleeve 38 is tensioned during formation and placement around the cord 24 to fit tightly to the cord 24.
  • the yarn threads 32 could be heat treated to either adhere to the cord 24 or shrink around the cord 24 in a manner akin to heat shrinking.
  • the fabric sleeve 38 is formed with sufficient porosity to allow for a selected amount of penetration of the jacket material 36 between the yarn threads 32. While in the embodiment of FIG.
  • the fabric sleeve 38 is formed around the cord 24, it is to be appreciated that, in other embodiments, the fabric sleeve 38 may be applied to one or more strands 30 of the cord 24 before the strands 30 are formed into the cord 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Ropes Or Cables (AREA)
EP17155315.9A 2016-02-09 2017-02-09 Élément de tension d'ascenseur Active EP3205617B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201662293044P 2016-02-09 2016-02-09

Publications (2)

Publication Number Publication Date
EP3205617A1 true EP3205617A1 (fr) 2017-08-16
EP3205617B1 EP3205617B1 (fr) 2020-12-23

Family

ID=58009717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17155315.9A Active EP3205617B1 (fr) 2016-02-09 2017-02-09 Élément de tension d'ascenseur

Country Status (2)

Country Link
EP (1) EP3205617B1 (fr)
CN (1) CN107043059B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3332958A1 (fr) * 2016-12-12 2018-06-13 Otis Elevator Company Courroie hybride à tissu stratifié pour système d'ascenseur
EP3757051A1 (fr) * 2019-06-28 2020-12-30 Otis Elevator Company Élément de support de charge d'ascenseur comprenant un entrelacement unidirectionnel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003064760A2 (fr) * 2002-01-30 2003-08-07 Thyssen Elevator Capital Corp. Corde en fibre synthetique pour ascenseur
WO2007030261A1 (fr) * 2005-09-02 2007-03-15 Gore Enterprise Holdings, Inc. Câble métallique incorporant une fibre de fluoropolymère
WO2011142756A1 (fr) * 2010-05-13 2011-11-17 Otis Elevator Company Procédé de fabrication d'un tissu tissé ayant un espacement désiré entre des éléments de tension
WO2012128753A1 (fr) * 2011-03-21 2012-09-27 Otis Elevator Company Elément de tension d'ascenseur
EP2569243A1 (fr) * 2010-05-13 2013-03-20 Otis Elevator Company Suspension d'ascenseur et/ou ensemble d'entraînement ayant au moins une surface de traction définie par des fibres d'armures
WO2013053621A1 (fr) * 2011-10-13 2013-04-18 Nv Bekaert Sa Ensemble porteur comprenant un câble d'acier et une gaine
WO2015126359A1 (fr) * 2014-02-18 2015-08-27 Otis Elevator Company Courroie d'ascenseur et procédé de fabrication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003064760A2 (fr) * 2002-01-30 2003-08-07 Thyssen Elevator Capital Corp. Corde en fibre synthetique pour ascenseur
WO2007030261A1 (fr) * 2005-09-02 2007-03-15 Gore Enterprise Holdings, Inc. Câble métallique incorporant une fibre de fluoropolymère
WO2011142756A1 (fr) * 2010-05-13 2011-11-17 Otis Elevator Company Procédé de fabrication d'un tissu tissé ayant un espacement désiré entre des éléments de tension
EP2569243A1 (fr) * 2010-05-13 2013-03-20 Otis Elevator Company Suspension d'ascenseur et/ou ensemble d'entraînement ayant au moins une surface de traction définie par des fibres d'armures
WO2012128753A1 (fr) * 2011-03-21 2012-09-27 Otis Elevator Company Elément de tension d'ascenseur
WO2013053621A1 (fr) * 2011-10-13 2013-04-18 Nv Bekaert Sa Ensemble porteur comprenant un câble d'acier et une gaine
WO2015126359A1 (fr) * 2014-02-18 2015-08-27 Otis Elevator Company Courroie d'ascenseur et procédé de fabrication

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3332958A1 (fr) * 2016-12-12 2018-06-13 Otis Elevator Company Courroie hybride à tissu stratifié pour système d'ascenseur
US10669127B2 (en) 2016-12-12 2020-06-02 Otis Elevator Company Hybrid fabric-laminated belt for elevator system
EP3757051A1 (fr) * 2019-06-28 2020-12-30 Otis Elevator Company Élément de support de charge d'ascenseur comprenant un entrelacement unidirectionnel

Also Published As

Publication number Publication date
CN107043059B (zh) 2021-01-19
EP3205617B1 (fr) 2020-12-23
CN107043059A (zh) 2017-08-15

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