WO2013055328A1 - Câble de levage ignifuge - Google Patents

Câble de levage ignifuge Download PDF

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Publication number
WO2013055328A1
WO2013055328A1 PCT/US2011/055940 US2011055940W WO2013055328A1 WO 2013055328 A1 WO2013055328 A1 WO 2013055328A1 US 2011055940 W US2011055940 W US 2011055940W WO 2013055328 A1 WO2013055328 A1 WO 2013055328A1
Authority
WO
WIPO (PCT)
Prior art keywords
jacket
parts
flame retardant
phosphazene
jacket material
Prior art date
Application number
PCT/US2011/055940
Other languages
English (en)
Inventor
Brad Guilani
Original Assignee
Otis Elevator Company
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 Company filed Critical Otis Elevator Company
Priority to PCT/US2011/055940 priority Critical patent/WO2013055328A1/fr
Publication of WO2013055328A1 publication Critical patent/WO2013055328A1/fr

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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/165—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
    • 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
    • D07B2201/2015—Strands
    • D07B2201/2042—Strands characterised by a coating
    • D07B2201/2044—Strands characterised by a coating comprising polymers
    • 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
    • D07B2201/2015—Strands
    • D07B2201/2046—Strands comprising fillers
    • 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
    • D07B2201/2083—Jackets or coverings
    • D07B2201/2092—Jackets or coverings characterised by the materials used
    • 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
    • D07B2205/2003—Thermoplastics
    • 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
    • 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
    • D07B2401/202—Environmental resistance
    • D07B2401/2035—High temperature resistance
    • 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 present invention relates to tension members for elevator systems, and more particularly to flame retardant tension members.
  • Conventional traction elevator systems can include a car, a counterweight, two or more ropes interconnecting the car and the counterweight, and a traction sheave to move the ropes, and machine to rotate the traction sheave.
  • the ropes were conventionally formed of steel wires formed into strands, the strands then formed into cords, and the cords then formed into the rope.
  • high tensile strength, lightweight synthetic fibers have been used in place of steel ropes in elevator systems.
  • Such fibers may include Aramid or Kevlar® fibers.
  • a coating could be provided on and around these synthetic fibers. The coating is used as a jacket.
  • flat ropes have been used in place of steel ropes in elevator systems.
  • Such flat ropes have a plurality of cords with a coating provided on and around the cords. The coating is used as a jacket.
  • U.S. Patent number 6,739,433, herein incorporated by reference, describes one such flat rope.
  • phosphate additives with polyester- based thermoplastic urethanes could promote jacket degradation since the phosphate additive could react with heat and water to create phosphoric acid that subsequently attacks and degrades the jacket material.
  • flame retardant is synonymous with the term “fire resistant” (although the term “flame retardant” will be used throughout) and means inhibiting or resisting the spread of fire.
  • the level of flame retardancy of the jacket material could be classified, for example, using the UL94 standard.
  • a flame retardant tension member for an elevator system includes a wire and/or a fiber, and a jacket applied to the wire and/or fiber, the jacket including a flame retardant additive comprising phosphazene.
  • a method of jacketing a rope for an elevator system includes the steps of providing a wire or fiber, providing a jacket material, adding phosphazene to the jacket material to provide a flame retardant jacket, and applying the flame retardant jacket to the wire or fiber.
  • Figure 1 is a perspective view of an exemplary elevator system using a tension member according to the present invention.
  • Figure 2 is a sectional side view of one possible arrangement of a tension member according to the present invention.
  • Figure 3 is a sectional side view of another possible arrangement of a tension member according to the present invention.
  • FIG. 1 Illustrated in Figure 1 is an exemplary traction elevator system 12.
  • the elevator system 12 can include a car 14, a counterweight 16, a traction drive 18 including a machine 20 and traction sheave 24, and a tension member 22.
  • the traction drive 18 moves tension member 22 (e.g., rope) interconnecting the car 14 and counterweight 16 using traction sheave 24.
  • the tension member 22 is engaged with sheave 24 such that rotation of the sheave 24 moves the tension member 22, and thereby the car 14 and the counterweight 16.
  • a geared machine 20 it should be noted that this figuration is for illustrative purposes only, and the present invention may be used with geared, gearless or other machines.
  • the tension member 22 is illustrated, in one possible arrangement, in Figure 2.
  • the tension member 22 of Figure 2 could include a plurality of metallic wires and/or a plurality of synthetic fibers within a common coating layer 28 or jacket to form a flat rope.
  • the wires and/or fibers could be twisted into strands, and the strands then twisted into a cord 26.
  • the plurality of cords 26 in the tension member 22 could have equal length, be spaced width-wise within the coating layer 28 and arranged linearly along the width dimension.
  • the coating layer 28 could be formed from a polyurethane material, such as polyester-based thermoplastic urethane or a polyether-based thermoplastic urethane, that could be applied to the plurality of cords 26 in such a manner, such as using a mould wheel or extrusion, that each of the individual cords 26 can be retained against longitudinal movement relative to the other ropes 26.
  • the coating layer 28 could surround the cords 26.
  • Other materials may also be used for the coating layer 28 if they are sufficient to meet one or more of the exemplary functions of the coating layer; such as traction, wear, and transmission of traction loads to the ropes 26 and resistance to environmental factors.
  • FIG. 3 illustrates another possible embodiment of tension member 22.
  • the tension member 22 of Figure 3 could include a plurality of metallic wires and/or a plurality of synthetic fibers within a common coating layer 28 or jacket to form a round rope.
  • the wires and/or fibers could be twisted into strands, the strands then twisted into cords, and the cords then twisted into a rope 27.
  • the coating layer 28 could be formed from a polyurethane material, such as polyester-based thermoplastic urethane or a polyether-based thermoplastic urethane, applied to the rope 27.
  • the coating layer 28 could surround the rope 27.
  • Other materials may also be used for the coating layer 28 if they are sufficient to meet one or more of the exemplary functions of the coating layer; such as traction, wear, and transmission of traction loads to the ropes 26 and resistance to environmental factors.
  • the coating layer 28 engages the traction sheave 24 and serves to transmit the forces from the rotation of the sheave 24 to the rope 27.
  • phosphazene a relatively new compound called phosphazene could be used as an additive in the jacket material.
  • Phosphazene may be obtained from Otsuka Chemical Co., Ltd.
  • Polyphosphazene has superior hydrolysis resistance and provides flame retardant properties. Because of the Applicant's discovery that phosphazene is a usable additive that resists humidity or water degrading the polyester urethane, flame retardant tension members 22 can now use polyester-based urethane as the jacket material. Additionally, because the phosphazene is both hydrolytically resistant and provides flame retardant properties, not as much additive is necessary.
  • a range of between about 5 parts to about 20 parts per 100 parts of phosphazene to polyester polyurethane may be utilized, a range of between about 10 to about 15 parts per hundred phosphazene to polyester- based polyurethane may also be used, and about 12 1 ⁇ 2 parts per 100 of phosphazene to polyester- based polyurethane may be deemed ideal.
  • the number of parts of additives per hundred of parts of polyether polyurethane has a range of 15 to 50 with 20 to 35 preferred and 28 deemed ideal.
  • the number of additives used as flame retardants per 100 parts of polyether-based polyurethane drops at least 5% with a 10% reduction being deemed ideal compared to the prior art.
  • the additive phosphazene may be mixed with the polyester-based or polyether-based urethane, melted and then applied to the cords 26.
  • polyester-based urethanes and polyether-based urethanes may require different formulations for use with phosphazene.
  • the additive may also include melamine cyanurate or other compounds, such as zinc borate and the like, and the ratio of melamine compounds to the number of phosphazene parts is from about 10 to 1 to 1 to 2 with about 5 to 1 being preferred and about 3 to 1 deemed ideal.
  • the combination of melamine cyanurate and phosphazene should not be greater than 20 parts of the 100 parts that form the coating layer 28.

Abstract

La présente invention concerne un câble de levage ignifuge destiné à un système d'ascenseur et comprenant, d'une part un fil et/ou une fibre, et d'autre part une gaine appliquée sur le fil et/ou la fibre, laquelle gaine inclut un additif ignifuge à base de phosphazène.
PCT/US2011/055940 2011-10-12 2011-10-12 Câble de levage ignifuge WO2013055328A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2011/055940 WO2013055328A1 (fr) 2011-10-12 2011-10-12 Câble de levage ignifuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2011/055940 WO2013055328A1 (fr) 2011-10-12 2011-10-12 Câble de levage ignifuge

Publications (1)

Publication Number Publication Date
WO2013055328A1 true WO2013055328A1 (fr) 2013-04-18

Family

ID=48082205

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/055940 WO2013055328A1 (fr) 2011-10-12 2011-10-12 Câble de levage ignifuge

Country Status (1)

Country Link
WO (1) WO2013055328A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10773926B2 (en) 2017-04-03 2020-09-15 Otis Elevator Company Elevator belt with additive layer
US11274017B2 (en) 2017-08-25 2022-03-15 Otis Elevator Company Belt with self-extinguishing layer and method of making

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859249A (en) * 1972-12-07 1975-01-07 Akzona Inc Process for manufacture of flame retardant polyester
US6164053A (en) * 1996-10-15 2000-12-26 Otis Elevator Company Synthetic non-metallic rope for an elevator
US20030220515A1 (en) * 1997-10-15 2003-11-27 Otsuka Chemical Co., Ltd. Crosslinked phenoxyphosphazene compounds, flame retardants, flame-retardant resin compositions, and moldings of flame-retardant resins
US7595362B2 (en) * 2004-01-30 2009-09-29 Nippon Steel Chemical Co., Ltd. Curable resin composition
US20110100759A1 (en) * 2008-08-15 2011-05-05 Xiaomei Yu Cord and polymer jacket assembly having a flame retardant in the polymer jacket material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859249A (en) * 1972-12-07 1975-01-07 Akzona Inc Process for manufacture of flame retardant polyester
US6164053A (en) * 1996-10-15 2000-12-26 Otis Elevator Company Synthetic non-metallic rope for an elevator
US20030220515A1 (en) * 1997-10-15 2003-11-27 Otsuka Chemical Co., Ltd. Crosslinked phenoxyphosphazene compounds, flame retardants, flame-retardant resin compositions, and moldings of flame-retardant resins
US7595362B2 (en) * 2004-01-30 2009-09-29 Nippon Steel Chemical Co., Ltd. Curable resin composition
US20110100759A1 (en) * 2008-08-15 2011-05-05 Xiaomei Yu Cord and polymer jacket assembly having a flame retardant in the polymer jacket material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10773926B2 (en) 2017-04-03 2020-09-15 Otis Elevator Company Elevator belt with additive layer
US11274017B2 (en) 2017-08-25 2022-03-15 Otis Elevator Company Belt with self-extinguishing layer and method of making

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