EP2511219A1 - Câble pour ascenseur - Google Patents

Câble pour ascenseur Download PDF

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Publication number
EP2511219A1
EP2511219A1 EP09852045A EP09852045A EP2511219A1 EP 2511219 A1 EP2511219 A1 EP 2511219A1 EP 09852045 A EP09852045 A EP 09852045A EP 09852045 A EP09852045 A EP 09852045A EP 2511219 A1 EP2511219 A1 EP 2511219A1
Authority
EP
European Patent Office
Prior art keywords
core
strands
rope
strand
outer layer
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.)
Withdrawn
Application number
EP09852045A
Other languages
German (de)
English (en)
Inventor
Atsushi Mitsui
Atsushi Funada
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 EP2511219A1 publication Critical patent/EP2511219A1/fr
Withdrawn legal-status Critical Current

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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
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D07B1/068—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration characterised by the strand design
    • 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
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/007—Making ropes or cables from special materials or of particular form comprising postformed and thereby radially plastically deformed elements
    • 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
    • D07B2201/2019—Strands pressed to shape
    • 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
    • D07B2201/2061—Cores characterised by their structure comprising wires resulting in a twisted structure
    • 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 in which a plurality of steel strands and a plurality of resin coating bodies are combined.
  • a plurality of inner layer strands are disposed outside a core rope that is formed by twisting together a plurality of core strands, and a plurality of outer layer strands are disposed outside the inner layer strands.
  • a resin core rope coating body is disposed between the core rope and the inner layer strands, a resin inner layer coating body is disposed between the inner layer strands and the outer layer strands, and a resin outer layer coating body is disposed outside the outer layer strands (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 that can facilitate manufacturing, and that can also make cross-sectional shape less prone to be deformed.
  • an elevator rope including: a core rope including: a single steel core strand; a resin core strand coating body that is coated onto an outer circumference of the core strand; a core rope strand assembly that is constituted by a plurality of steel core rope strands that are disposed on an outer circumference of the core strand coating body; and a resin core rope coating body that is disposed on an outer circumference of the core rope strand assembly; an outer layer strand assembly that is constituted by a plurality of steel outer layer strands that are disposed on an outer circumference of the core rope coating body; and a resin outer layer coating body that is disposed on an outer circumference of the outer layer strand assembly, wherein: the core strand and the core rope strands have a three-layer construction in which two layers of wires are bound onto an outer circumference of a central wire; and the outer layer strands have a two-layer construction in which a single layer of wires is bound
  • the elevator rope according to the present invention uses only a single core strand 1, steps for twisting the strands together can be reduced, enabling manufacturing to be facilitated. Since the core rope strands 3 are disposed on the outer circumference of the core strand coating body without being twisted directly onto the outer circumference of the core strand, the cross-sectional shape of the core rope can be made less prone to deform.
  • Figure 1 is a cross section of an elevator rope according to Embodiment 1 of the present invention.
  • a single steel core strand 1 is disposed centrally in an elevator rope.
  • a resin core strand coating body 2 is disposed on an outer circumference of the core strand 1.
  • a plurality of (in this case, eight) steel core rope strands 3 are twisted together on an outer circumference of the core strand coating body 2.
  • a resin core rope coating body 5 is disposed on an outer circumference of a core rope strand assembly 4 that is constituted by the eight core rope strands 3 and the core strand coating body 2.
  • a core rope 6 is constituted by the core strand 1, the core strand coating body 2, the core rope strands 3, and the core rope coating body 5.
  • a plurality of (in this case, twenty) steel outer layer strands 7 are twisted together on the outer circumference of the core rope coating body 5.
  • a resin outer layer coating body 9 is disposed on the outer circumference of an outer layer strand assembly 8 that is constituted by the twenty outer layer strands 7 and the core rope coating body 5. The outer layer strands 7 and the outer layer coating body 9 are fixed using an adhesive.
  • All of the strands including the core strand 1, the core rope strands 3, and the outer layer strands 7, are compressed (plastic working) from an outer circumference by a die during manufacturing to modify cross-sectional shapes of wires therein.
  • the core strand 1 and the core rope strands 3 have three-layer constructions in which two layers of wires are bound on an outer circumference of a central wire.
  • the cross-sectional constructions of the core strand 1 and the core rope strands 3 are Seale.
  • the lay lengths of the two layers of wires in the core strand 1 and the core rope strands 3 are equal.
  • the core strand 1 and the core rope strands 3 are constituted by parallel lays.
  • the outer layer strands 7 have a two-layer construction in which a single layer of wires is bound on an outer circumference of a central wire.
  • Resins that have a certain amount of hardness such as polyethylene or polypropylene, for example, are used as the materials for the core strand coating body 2 and the core rope coating body 5 since it is necessary to bear the pressure from the core rope strands 3 and the outer layer strands 7.
  • the core strand coating body 2 and the core rope coating body 5 are constituted by resins that are cross-linked by introducing a cross-linking agent.
  • the coefficients of friction of the core strand coating body 2 and the core rope coating body 5 should be reasonably low in order to increase flexibility of the elevator rope and also to reduce loss that occurs during flexing by the sheaves.
  • the materials of the core strand coating body 2 and the core rope coating body 5 are harder than the material of the outer layer coating body 9 and to have lower coefficients of friction relative to identical metal materials.
  • the core strand coating body 2 and the core rope coating body 5 it is preferable for the core strand coating body 2 and the core rope coating body 5 to have superior wear resistance since slippage arises against the core strand 1, the core rope strands 3, and the outer layer strands 7.
  • the outer layer coating body 9 is constituted by a resin that has sufficient wear resistance at a coefficient of friction on the sheaves that is greater than or equal to 0.2, such as a polyurethane, for example.
  • the outer layer strands 7 are constituted by a resin that is cross-linked by introducing a cross-linking agent.
  • the core strand coating body 2 and the core rope coating body 5 it is preferable for the core strand coating body 2 and the core rope coating body 5 to enter between the adjacent core rope strands 3 and be in contact with each other as shown in Figure 1 even when subjected to tension during use. It is also preferable for the core rope coating body 5 and the outer layer coating body 9 to enter between the adjacent outer layer strands 7 and be in contact with each other as shown in Figure 1 even when subjected to tension during use.
  • the core strand coating body 2 and the core rope coating body 5 are constituted by cross-linked resin materials, durability is increased against temperature increases due to use in high-temperature environments or due to the continuous action of flexing, etc., enabling service life to be extended.
  • the outer layer coating body 9 is also constituted by a cross-linked resin material, durability is increased against temperature increases due to use in high-temperature environments or due to the continuous action of flexing, etc., enabling service life to be extended. Deterioration in strength from temperature increases due to slippage between the sheaves and the elevator rope during emergency braking can also be prevented, enabling sufficient deceleration performance to be maintained.
  • the cross-sectional constructions of the core strand 1 and the core rope strands 3 are Seale, and the wires of the core strand 1 and the core rope strands 3 are twisted together parallel to each other, the wires are in line contact with each other, enabling abrasive wear in the core strand 1 and the core rope strands 3 to be reduced, and air gaps between the wires are reduced, enabling the effective cross-sectional area to be increased.
  • Figure 2 is a cross section of an elevator rope according to Embodiment 2 of the present invention. Shaping was applied to all of the strands in Embodiment 1, but shaping is not applied to the core strand 1 in Embodiment 2. The rest of the configuration is similar or identical to that of Embodiment 1.
  • Embodiment 2 by exclusively not applying shaping to the core strand 1, if wire breakage occurs in the wires of the core strand 1, deformation of the broken wires is absorbed within a range of gaps inside the core strand 1, enabling collapse of the cross-sectional shape of the core strand 1 to be suppressed. Making wire tension uniform during manufacturing can be facilitated compared to when shaping is applied, enabling early breakage of the wires to be suppressed.
  • Figure 3 is a cross section of an elevator rope according to Embodiment 3 of the present invention.
  • the number of core rope strands 3 is set to six. Consequently, the number of outer layer strands 7 is set to sixteen.
  • the rest of the basic cross-sectional construction is similar or identical to that of Embodiment 1.
  • the diameters of all of the strands (the core strand 1 and the core rope strands 3) that are contained in the core rope 6 can be made practically identical, enabling the diameters of the wires that constitute the strands thereof also to be made practically identical.
  • the outer layer strands 7 are constituted by 16 x 7 (sixteen outer layer strands 7 that are each constituted by seven wires), and the core rope 6 is constituted by 6 x S(19) +S(19) (six core rope strands 3 in which nineteen wires are disposed in Seale form, and a single core strand 1 in which nineteen wires are disposed in Seale form).
  • the maximum diameters of the wires of the core strand 1, the core rope strands 3 and the outer layer strands 7 can thereby be made approximately equal while keeping the number of wires in the entire elevator rope down to 245.
  • fatigue resistance is increased, packing density, i.e., effective cross-sectional area can be improved, and manufacturing costs can be suppressed.
  • the total number of all of the wires that are contained in all of the strands, including the core strand 1, the core rope strands 3, and the outer layer strands 7, to be set to less than or equal to 250.
  • the rope diameter excluding the outer layer coating body 9 can be set to 8 mm, and the diameters of all of the wires can be set to less than or equal to 0.5 mm.
  • the diameters of the sheaves can be set to a minimum of 200 mm, or greater than or equal to 400 times the diameters of the wires, enabling sufficient flexural fatigue service life to be ensured.
  • a rope diameter of 8 mm corresponds to a rope diameter of 10 mm in a type of elevator rope that does not use any resin coating at all. Since the minimum diameter of the sheaves is 400 mm when the rope diameter is set to 10 mm, the diameters of the sheaves can be halved.
  • Figure 4 is a cross section of an elevator rope according to Embodiment 4 of the present invention. Shaping is not applied to the core strand 1 in Embodiment 4. The rest of the configuration is similar or identical to that of Embodiment 3.
  • FIG. 5 is a side elevation that shows an example of an elevator apparatus to which the elevator rope of Embodiments 1, 2, 3, or 4 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.
  • Emergency stopper apparatuses 23 that make the car 19 perform an emergency stop by engaging with the car guide rail 21 are mounted to the car 19.
  • the type of elevator apparatus to which the elevator rope according to the present invention is applied is not limited to the type in Figure 5 .
  • 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.
  • the elevator rope according to the present invention can also be applied to ropes other than ropes for suspending a car 19, such as compensating ropes or governor ropes, for example.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Ropes Or Cables (AREA)
EP09852045A 2009-12-08 2009-12-08 Câble pour ascenseur Withdrawn EP2511219A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/070529 WO2011070648A1 (fr) 2009-12-08 2009-12-08 Câble pour ascenseur

Publications (1)

Publication Number Publication Date
EP2511219A1 true EP2511219A1 (fr) 2012-10-17

Family

ID=44145220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09852045A Withdrawn EP2511219A1 (fr) 2009-12-08 2009-12-08 Câble pour ascenseur

Country Status (5)

Country Link
EP (1) EP2511219A1 (fr)
JP (1) JPWO2011070648A1 (fr)
KR (1) KR20120070606A (fr)
CN (1) CN102639424A (fr)
WO (1) WO2011070648A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101787849B1 (ko) * 2012-08-29 2017-10-18 미쓰비시덴키 가부시키가이샤 엘리베이터용 로프 및 그것을 이용한 엘리베이터 장치
JP6077941B2 (ja) * 2013-06-07 2017-02-08 株式会社日立製作所 エレベータ用ワイヤロープ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385867B (en) * 2001-12-12 2005-06-29 Mitsubishi Electric Corp Elevator rope and elevator apparatus
CN100335398C (zh) * 2003-01-24 2007-09-05 三菱电机株式会社 电梯用绳索
WO2006061888A1 (fr) * 2004-12-08 2006-06-15 Mitsubishi Denki Kabushiki Kaisha Câble pour ascenseur et ascenseur
WO2006075384A1 (fr) * 2005-01-14 2006-07-20 Mitsubishi Denki Kabushiki Kaisha Cable pour ascenseur et son procede de fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011070648A1 *

Also Published As

Publication number Publication date
CN102639424A (zh) 2012-08-15
JPWO2011070648A1 (ja) 2013-04-22
WO2011070648A1 (fr) 2011-06-16
KR20120070606A (ko) 2012-06-29

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