EP2441723A1 - Câble pour ascenseurs et procédé pour sa production - Google Patents

Câble pour ascenseurs et procédé pour sa production Download PDF

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Publication number
EP2441723A1
EP2441723A1 EP09845774A EP09845774A EP2441723A1 EP 2441723 A1 EP2441723 A1 EP 2441723A1 EP 09845774 A EP09845774 A EP 09845774A EP 09845774 A EP09845774 A EP 09845774A EP 2441723 A1 EP2441723 A1 EP 2441723A1
Authority
EP
European Patent Office
Prior art keywords
core rope
rope
core
strands
outer circumference
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
EP09845774A
Other languages
German (de)
English (en)
Other versions
EP2441723B1 (fr
EP2441723A4 (fr
Inventor
Atsushi Mitsui
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP2441723A1 publication Critical patent/EP2441723A1/fr
Publication of EP2441723A4 publication Critical patent/EP2441723A4/fr
Application granted granted Critical
Publication of EP2441723B1 publication Critical patent/EP2441723B1/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
    • 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
    • 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
    • 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
    • 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
    • D07B7/14—Machine details; Auxiliary devices for coating or wrapping ropes, cables, or component strands thereof
    • D07B7/145—Coating or filling-up interstices
    • 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
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D07B1/0686—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration characterised by the core design
    • 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
    • D07B2201/2001—Wires or filaments
    • D07B2201/201—Wires or filaments characterised by a coating
    • D07B2201/2012—Wires or filaments 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
    • D07B2201/2047—Cores
    • D07B2201/2048—Cores characterised by their cross-sectional shape
    • D07B2201/2049—Cores characterised by their cross-sectional shape having protrusions extending radially functioning as spacer between strands or wires
    • 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • D07B2201/2057—Cores characterised by their structure comprising filaments or fibers resulting in a twisted structure
    • 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2059—Cores characterised by their structure comprising wires
    • 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
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2065—Cores characterised by their structure comprising a coating
    • 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
    • D07B2201/2071—Spacers
    • D07B2201/2074—Spacers in radial direction
    • 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 an elevator rope that can be used as a main rope that suspends a car, for example, and to a manufacturing method therefor.
  • a plurality of steel strands are stranded onto an outer circumference of a core rope that is made of a fiber bundle.
  • the core rope is configured by stranding three core rope strands that are each formed by stranding a large number of yarns. Density is increased by shaping the core rope strands by compression from the outer circumference as they are stranded with the steel strands. The shape of the rope thereby stabilizes, and gaps among the steel strands are thereby maintained appropriately (see Patent Literature 1, for example).
  • the present invention aims to solve the above problems and an object of the present invention is to provide an elevator rope and a manufacturing method therefor that enables packing density of a core rope to be increased while preventing damage to the core rope and steel strands even if rope diameter is large.
  • an elevator rope including: a core rope that is constituted by a fiber bundle; a resin core rope coating body that is coated onto an outer circumference of the core rope; and a plurality of steel strands that are stranded onto an outer circumference of the core rope coating body.
  • an elevator rope manufacturing method including steps of: coating a resin core rope coating body onto an outer circumference of a core rope that is constituted by a fiber bundle; and stranding a plurality of steel strands onto an outer circumference of the core rope coating body.
  • an elevator rope manufacturing method including steps of: coating a core rope strand coating body onto an outer circumference of each of a plurality of core rope strands that are constituted by fiber bundles; forming a core rope by stranding the core rope strands that are coated with the core rope strand coating bodies with each other; forming a core rope coating body by passing the core rope through a heated die to integrate the core rope strand coating bodies in which the core rope strands are coated separately; and stranding a plurality of steel strands onto an outer circumference of the core rope coating body.
  • an elevator rope because a core rope that is constituted by a fiber bundle is coated with a resin core rope coating body, and steel strands are stranded onto an outer circumference thereof, packing density of the core rope can be increased while preventing damage to the core rope and steel strands even if rope diameter is large.
  • Figure 1 is a cross section of an elevator rope according to Embodiment 1 of the present invention.
  • a core rope 1 is disposed centrally in an elevator rope (a wire rope).
  • the core rope 1 is configured by stranding three core rope strands 2 with each other and pressing from an outer circumference.
  • Each of the core rope strands 2 is constituted by a large number of yarns that are formed by bundling fibers.
  • the outer circumference of the core rope 1 is coated by a resin core rope coating body 3.
  • Polyethylene or polypropylene, for example, is used as a material for the core rope coating body 3.
  • a plurality of steel strands (in this case, eight) are stranded onto the outer circumference of the core rope coating body 3.
  • Each of the steel strands 4 is configured by stranding a plurality of steel wires. More specifically, the steel strands 4 have: a core wire that is disposed centrally; an intermediate layer that is constituted by a plurality of intermediate wires that are stranded onto an outer circumference of the core wire; and an outer layer that is constituted by a plurality of outer circumferential wires that are stranded onto an outer circumference of the intermediate layer. Diameters of the intermediate wires are smaller than diameters of the core wire and the outer circumferential wires.
  • the core rope coating body 3 is interposed between mutually-adjacent steel strands 4.
  • the core rope coating body 3 is also interposed between the steel strands 4 and the core rope 1.
  • a plurality of grooves 1 a that have V-shaped cross sections are formed on the outer circumference of the core rope 1 between mutually-adjacent core rope strands 2, and the core rope coating body 3 also enters the grooves 1a.
  • the elevator rope from Figure 1 When the elevator rope from Figure 1 is manufactured, first, as shown in Figure 2 , the three core rope strands 2, which have circular cross sections, are stranded with each other, and the core rope coating body 3 is coated onto the outer circumference thereof.
  • the core rope coating body 3 is coated onto the outer circumference of the core rope 1 by extrusion using a pressure die 5 such as that shown in Figure 3 .
  • a core rope insertion channel 5a through which the core rope 1 is inserted is disposed centrally inside the pressure die 5.
  • a cylindrical resin flow channel 5b is disposed radially outside the core rope insertion channel 5a inside the pressure die 5.
  • a diameter of the resin flow channel 5b is gradually reduced near a downstream end (on the left in Figure 3 ), and the downstream end of the resin flow channel 5b is merged with the core rope insertion channel 5a inside the pressure die 5.
  • resin that is made to flow into the resin flow channel 5b is coated onto the outer circumference of the core rope 1 while being pressurized inside the pressure die 5. The resin thereby fills gaps on the outer circumference of the core rope 1.
  • the resin flow channel 6b does not merge with the core rope insertion channel 6a inside the tube die 6, and the outer circumference of the core rope 1 is covered with a resin tube (an outer cover) that is formed outside the tube die 6. For this reason, it is difficult to fill the gaps on the outer circumference of the core rope 1 with the resin, and the core rope coating body 3 assumes a form such as that shown in Figures 5 or 6 .
  • the core rope coating body 3 is a cylindrical shape, and in Figure 6 , the core rope coating body 3 has adhered to the outer circumference of the core rope 1 at a uniform thickness, both of which are less effective for increasing the packing density of the core rope.
  • the core rope coating body 3 is coated onto the outer circumference of the core rope 1, and then the steel strands 4 are stranded.
  • the core rope is shaped by compression from the outer circumference with the core rope coating body 3 interposed to increase density.
  • the core rope coating body 3 also enters between the mutually-adjacent steel strands 4.
  • the core rope coating body 3 is coated onto the outer circumference of the core rope 1, the core rope 1 can be shaped by compression with the core rope coating body 3 interposed, enabling the packing density of the core rope 1 to be increased while preventing damage to the core rope 1 and the steel strands 4 even if rope diameter is large.
  • the core rope coating body 3 fills the gaps on the outer circumference of the core rope 1 without having to press unnecessarily, or to deform the core rope 1, rigidity of the core rope 1 can be maintained when the steel strands 4 are stranded, thereby also enabling damage to the core rope 1 and the steel strands 4 to be prevented.
  • the core rope coating body 3 is deformed and enters between the steel strands 4 and between the core rope strands 2, and also has higher rigidity and is less prone to deform than conventional core ropes that only have fiber cores, contact pressure between the steel strands 4 and the core rope strands 2 is reduced, enabling fretting wear to be reduced.
  • the thickness of the core rope coating body 3 is not increased more than necessary, minute cracks arise in the core rope coating body 3 due to repeated flexing, but a lubricating oil that is contained in the core rope 1 can also be supplied to the steel strands 4 through these gaps to maintain satisfactory lubrication.
  • minute pores may also be predisposed in the core rope coating body 3 in order to supply lubricating oil that is contained in the core rope 1 to the steel strands 4.
  • Figure 7 is a cross section that shows an intermediate state during manufacturing of an elevator rope according to Embodiment 2 of the present invention.
  • core rope strand coating bodies 7 are applied to an outer circumference of respective core rope strands 2, and a core rope coating body 3 is formed on an outer circumference of a core rope 1 that is formed by stranding the core rope strands 2 thus coated.
  • the core rope strand coating bodies 7 are constituted by a resin that is similar to that of the core rope coating body 3.
  • the core rope strand coating bodies 7 are coated onto the outer circumference of the core rope strands 2 by extrusion using a tube die 6 such as that shown in Figure 4 .
  • the core rope coating body 3 is formed using a pressure die 5 such as that shown in Figure 3 .
  • the rest of the configuration is similar to Embodiment 1, steel strands 4 being stranded onto the outer circumference of the core rope coating body 3.
  • a lubricating oil is impregnated into the core rope 1, but since resin pressure acts on the core rope 1 when formed by the pressure die 5, the lubricating oil is prone to be squeezed out in an extruder die portion.
  • the forming method is such that a preformed tube is placed over the core rope strands 2 outside the die, very little lubricating oil is squeezed out during formation.
  • the cross sections of the core rope strands 2 are shapes that are nearly circular compared to the core rope 1, even if formed by the tube die 6, the packing density relative to the diameter changes very little from when formed by the pressure die 5. From the above, a core rope 1 in which packing density is increased can be obtained while maintaining the oil content of the core rope 1 by configuring as described above.
  • Figures 8 and 9 are cross sections that show intermediate states during manufacturing of an elevator rope according to Embodiment 3 of the present invention.
  • core rope strand coating bodies 7 are applied to an outer circumference of respective core rope strands 2, and the core rope strands 2 thus coated are stranded.
  • a tube die 6 in the formation of the core rope strand coating bodies 7 in a similar manner to Embodiment 2.
  • the core rope from Figure 8 is subsequently passed through a heated die to form the shape that is shown in Figure 9 .
  • the core rope strand coating bodies 7 that coat the core rope strands 2 separately are thereby integrated with each other to form a core rope coating body 3.
  • the rest of the configuration is similar to Embodiment 1, steel strands 4 being twisted together on the outer circumference of the core rope coating body 3.
  • a core rope in which packing density is high and oil content is maintained can also be configured.
  • FIG 10 is a side elevation that shows an example of an elevator apparatus to which the elevator rope of Embodiments 1, 2 or 3 is applied.
  • a machine room 12 is disposed in an upper portion of a hoistway 11.
  • a machine base 13 is installed inside the machine room 12.
  • a hoisting machine 14 is supported on the machine base 13.
  • the hoisting machine 14 has a driving sheave 15 and a hoisting machine main body 16.
  • the hoisting machine main body 16 has: a hoisting machine motor that rotates the driving sheave 15; and a hoisting machine brake that brakes the rotation of the driving sheave 15.
  • a deflecting sheave 17 is mounted to the machine base 13.
  • a plurality of elevator ropes 18 that function as a suspending means are wound around the driving sheave 15 and the deflecting sheave 17. Portions of the elevator ropes 18 that are nearer to the counterweight 10 than the driving sheave 15 are wound around the deflecting sheave 17.
  • a car 19 is suspended on first end portions of the elevator ropes 18. Specifically, the car 19 is suspended inside the hoistway 11 by the elevator ropes 18 on a first side of the driving sheave 15.
  • a counterweight 20 is suspended on second end portions of the elevator ropes 18. Specifically, the counterweight 20 is suspended by the elevator ropes 18 on a second side of the driving sheave 15.
  • a pair of car guide rails 21 that guide raising and lowering of the car 19 and a pair of counterweight guide rails 22 that guide raising and lowering of the counterweight 20 are installed inside the hoistway 11.
  • a safety gear 23 that makes the car 19 perform an emergency stop by engaging with the car guide rails 21 is mounted to the car 19.
  • the type of elevator apparatus to which the elevator ropes according to the present invention are applied is not limited to the type in Figure 10 .
  • the present invention can also be applied to machine-roomless elevators, elevator apparatuses that use two-to-one (2:1) roping methods, multi-car elevators, or double-deck elevators.

Landscapes

  • Ropes Or Cables (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP09845774.0A 2009-06-08 2009-06-08 Câble pour ascenseurs et procédé pour sa production Active EP2441723B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/060445 WO2010143249A1 (fr) 2009-06-08 2009-06-08 Câble pour ascenseurs et procédé pour sa production

Publications (3)

Publication Number Publication Date
EP2441723A1 true EP2441723A1 (fr) 2012-04-18
EP2441723A4 EP2441723A4 (fr) 2015-07-08
EP2441723B1 EP2441723B1 (fr) 2019-07-24

Family

ID=43308519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09845774.0A Active EP2441723B1 (fr) 2009-06-08 2009-06-08 Câble pour ascenseurs et procédé pour sa production

Country Status (5)

Country Link
EP (1) EP2441723B1 (fr)
JP (1) JP5404782B2 (fr)
KR (1) KR101414330B1 (fr)
CN (1) CN102459052B (fr)
WO (1) WO2010143249A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016138893A1 (fr) * 2015-03-04 2016-09-09 Casar Drahtseilwerk Saar Gmbh Câble et procédé de fabrication d'un câble
US9896307B2 (en) 2013-07-09 2018-02-20 Mitsubishi Electric Corporation Elevator rope and elevator apparatus that uses same
US9902594B2 (en) 2012-08-29 2018-02-27 Mitsubishi Electric Corporation Elevator rope and elevator apparatus that uses same
WO2019040563A1 (fr) * 2017-08-22 2019-02-28 Breeze-Eastern Llc Système de treuil monté sur un aéronef ayant un câble de câble métallique à brins multiples
DE102017130743A1 (de) * 2017-12-20 2019-06-27 Gustav Wolf GmbH Aufzugseil und Verfahren zur Herstellung eines Aufzugseils
US10676320B2 (en) 2015-10-16 2020-06-09 Mitsubishi Electric Corporation Elevator rope and a manufacturing method therefor

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JP2012193475A (ja) * 2011-03-17 2012-10-11 Asahi Intecc Co Ltd ワイヤーロープ
US9162849B2 (en) 2012-01-23 2015-10-20 Mitsubishi Electric Corporation Elevator rope
DE112016006384T5 (de) * 2016-02-10 2018-11-22 Mitsubishi Electric Corporation Fahrstuhl-Seil und zugehöriges Herstellungsverfahren
WO2018073897A1 (fr) * 2016-10-18 2018-04-26 三菱電機株式会社 Câble pour ascenseur et dispositif d'ascenseur
WO2018198240A1 (fr) 2017-04-26 2018-11-01 三菱電機株式会社 Ascenseur, corps de suspension associé, et procédé de production de corps de suspension
DE112018007311T5 (de) * 2018-03-19 2020-12-10 Mitsubishi Electric Corporation Aufzugseil
CN118103318A (zh) * 2021-10-22 2024-05-28 三菱电机株式会社 钢丝绳、电梯以及钢丝绳的制造方法
JP7195483B1 (ja) * 2022-02-17 2022-12-23 三菱電機株式会社 ロープ及びそれを用いたベルト

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9902594B2 (en) 2012-08-29 2018-02-27 Mitsubishi Electric Corporation Elevator rope and elevator apparatus that uses same
US9896307B2 (en) 2013-07-09 2018-02-20 Mitsubishi Electric Corporation Elevator rope and elevator apparatus that uses same
WO2016138893A1 (fr) * 2015-03-04 2016-09-09 Casar Drahtseilwerk Saar Gmbh Câble et procédé de fabrication d'un câble
KR20170122190A (ko) * 2015-03-04 2017-11-03 체자르 드라트자일베르크 자르 게엠베하 로프 및 로프 제조 방법
US10760212B2 (en) 2015-03-04 2020-09-01 Casar Drahtseilwerk Saar Gmbh Rope and method for producing a rope
US10676320B2 (en) 2015-10-16 2020-06-09 Mitsubishi Electric Corporation Elevator rope and a manufacturing method therefor
WO2019040563A1 (fr) * 2017-08-22 2019-02-28 Breeze-Eastern Llc Système de treuil monté sur un aéronef ayant un câble de câble métallique à brins multiples
US11155352B2 (en) 2017-08-22 2021-10-26 Breeze-Eastern Llc Aircraft mounted hoist system having a multi-stranded wire rope cable
EP3672871A4 (fr) * 2017-08-22 2022-03-30 Breeze-Eastern LLC Système de treuil monté sur un aéronef ayant un câble de câble métallique à brins multiples
DE102017130743A1 (de) * 2017-12-20 2019-06-27 Gustav Wolf GmbH Aufzugseil und Verfahren zur Herstellung eines Aufzugseils

Also Published As

Publication number Publication date
EP2441723B1 (fr) 2019-07-24
KR20110127262A (ko) 2011-11-24
CN102459052A (zh) 2012-05-16
WO2010143249A1 (fr) 2010-12-16
EP2441723A4 (fr) 2015-07-08
CN102459052B (zh) 2014-10-29
KR101414330B1 (ko) 2014-07-02
JP5404782B2 (ja) 2014-02-05
JPWO2010143249A1 (ja) 2012-11-22

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