EP1586526B1 - Elevator rope - Google Patents
Elevator rope Download PDFInfo
- Publication number
- EP1586526B1 EP1586526B1 EP03815449.8A EP03815449A EP1586526B1 EP 1586526 B1 EP1586526 B1 EP 1586526B1 EP 03815449 A EP03815449 A EP 03815449A EP 1586526 B1 EP1586526 B1 EP 1586526B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strands
- strand
- wires
- core
- rope
- 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
Links
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Images
Classifications
-
- 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
-
- 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
- D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
- D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
- D07B1/148—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising marks or luminous elements
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1028—Rope or cable structures characterised by the number of strands
- D07B2201/1036—Rope or cable structures characterised by the number of strands nine or more strands respectively forming multiple layers
-
- 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 used in an elevator to suspend a car.
- the present invention aims to solve the above problems and an object of the present invention is to provide an elevator rope enabling extension of service life while using steel wires.
- an elevator rope including: a core rope; and a second strand layer surrounding an outer periphery of the core rope, wherein: the core rope includes a plurality of first strands laid together with each other; each of the first strands includes: a plurality of steel first wires laid together with each other; and a first strand coating body made of a resin individually coating an outer periphery of a group of the plurality of first wires laid together; the second strand layer includes a plurality of second strands laid together on an outer periphery of the core rope; and each of the second strands includes a plurality of steel second wires laid together with each other.
- an elevator rope including: a core rope including a plurality of first strands laid together with each other; a second strand layer main body including a plurality of second strands laid together on an outer periphery of the core rope; a plurality of auxiliary strands disposed on an outer peripheral portion of the second strand layer main body in gaps between mutually-adjacent second strands; and a second strand layer coating body coating an outer periphery of the second strand layer main body and the auxiliary strands.
- an elevator rope including: a rope main body including a plurality of strands laid together with each other, the strands including a plurality of steel wires laid together with each other; and a coating body made of a resin coated on an outer periphery of the rope main body, wherein: the coating body includes: an inner layer; and an outer layer coated on an outer periphery of the inner layer; and a coefficient of friction of the inner layer is greater than a coefficient of friction of the outer layer.
- Figure 1 is a cross section of an elevator rope according to Embodiment 1 of the present invention.
- the elevator rope has: a core rope 1; and a second strand layer 2 surrounding an outer periphery of the core rope 1.
- the core rope 1 has: a centrally-positioned core strand 3; and a plurality of first strands 4 (in this case eight) laid together on an outer periphery of the core strand 3.
- the core strand 3 is constituted by three or more layers.
- the core strand 3 has a plurality of steel core wires 5 laid together with each other. A plurality of wires having different diameters than each other are used for the core wires 5. Specifically, a plurality of large core wires 5a, and small core wires 5b having a smaller diameter than the large core wires 5a disposed in gaps between the large core wires 5a are used.
- Lay lengths of the core wires 5 are equal to each other.
- the core wires 5 are laid together parallel to each other so as to be inmutual line contact with adjacent core wires 5 (Japanese Industrial Standards (JIS) G 3525 12.2 b).
- the cross-sectional construction of the core strand 3 in Embodiment 1 is seale, but it may also be warrington, warrington-seale, or filler wire (JIS G 3525).
- Each of the first strands 4 has: a plurality of steel first wires 6 (in this case a total of seven wires constituted by one central wire and six outer peripheral wires) laid together with each other; and a first strand coating body 7 made of a resin independently coated on an outer periphery of this group of first wires 6 laid together.
- the first strand coating bodies 7 are composed of a polyethylene resin, for example.
- the second strand layer 2 has a plurality of second strands 8 (in this case eight) laid together on an outer periphery of the core rope 1.
- Each of the second strands 8 has a plurality of steel second wires 9 laid together with each other.
- a plurality of wires having different diameters than each other are used for the second wires 9.
- a plurality of large second wires 9a, and small second wires 9b having a smaller diameter than the large second wires 9a disposed in gaps between the large second wires 9a are used for the second wires 9.
- the number of second strands 8 is equal to the number of first strands 4.
- the lay lengths of the second strands 8 are also equal to the lay lengths of the first strands 4.
- the second strands 8 are laid parallel to the first strands 4 so as to be in mutual line contact with adjacent first strands 4.
- first strand coating bodies 7 are disposed on the first strands 4, abrasion of the core strand 3 and the first strands 4 is suppressed and bending stresses can be alleviated by a buffer action, enabling extension of service life.
- wire fill factor can be increased and disarray of the core rope 1 over periods of extended use can be suppressed.
- the core rope 1 has a core strand 3, and the lay lengths of the core wires 5 are equal to each other, and the core wires 5 are laid together parallel to each other so as to be in mutual line contact with adjacent core wires 5, deterioration of the core wires 5 due to abrasion can be suppressed, enabling stable strength to be ensured.
- FIG. 2 is a cross section of an elevator rope according to Embodiment 2 of the present invention.
- the elevator rope has: a core rope 1; and a second strand layer 11 surrounding an outer periphery of the core rope 1.
- the core rope 1 is constructed in a similar manner to that of Embodiment 1.
- a second strand layer main body 16 is constituted by a plurality of second strands 8 (in this case eight) laid together on an outer periphery of the core rope 1.
- Each of the second strands 8 is constructed in a similar manner to those of Embodiment 1.
- the second strand layer 11 has: a second strand layer main body 16; a plurality of auxiliary strands 13 (in this case eight) disposed on an outer peripheral portion of the second strand layer main body 16 in gaps between mutually-adjacent second strands 8; and a second strand layer coating body 12 made of a resin coating an outer periphery of the second strand layer main body 16 and the auxiliary strands 13.
- the second strand layer coating body 12 is constituted by a high-friction resin material having a coefficient of friction greater than or equal to 0.2, such as a polyurethane resin, for example.
- Each of the auxiliary strands 13 has: a plurality of steel auxiliary strand wires 14 (in this case seven) laid together with each other; and an auxiliary strand coating body 15 made of a resin coated on an outer periphery.
- the auxiliary strand coating bodies 15 are composed of a polyethylene resin, for example.
- a diameter of the auxiliary strands 13 is set so as to be smaller than a diameter of the second strands 8.
- a lay length of the auxiliary strands 13 and a lay length of the second strands 8 are equal.
- the auxiliary strands 13 are laid parallel to the second strands 8 so as to be in mutual line contact with adjacent second strands 8.
- the second strand layer coating body 12 is disposed on a portion contacting sheaves (not shown), the second strands 8 are prevented from being abraded by direct contact with the sheaves. Furthermore, bending stresses arising due to the second wires 9 being crushed against the sheaves can also be alleviated, thereby enabling extension of the service life of the elevator rope and enabling reductions in diameters of the sheaves.
- the second strand layer coating body 12 is disposed on an outermost periphery, abrasion of the sheaves can also be prevented, enabling a degree of freedom in selecting materials for the second wires 9 and the sheaves to be improved. Consequently, overall strength can be raised further and the sheaves can be constructed inexpensively.
- the second strand layer coating body 12 which comes into contact with a drive sheave, is constituted by a high-friction resin material such as a polyurethane resin, for example, sufficient transfer efficiency of the driving force can be ensured even if the diameter of the drive sheave is reduced.
- the packing density of the wires can be increased, enabling overall strength to be increased and also enabling extension of service life by preventing disarray of the ropes.
- auxiliary strand coating bodies 15 are disposed on the auxiliary strands 13, the auxiliary strand wires 14 and the second wires 9 are not in direct contact with each other, enabling abrasion of the auxiliary strand wires 14 and the second wires 9 to be suppressed, thereby enabling extension of service life.
- the lay lengths of the auxiliary strands 13 and the lay lengths of the second strands 8 are equal, and the auxiliary strands 13 are laid parallel to the second strands 8, deterioration of the second strands 8 and the auxiliary strands 13 due to abrasion can be suppressed, enabling extension of the service life of the elevator rope.
- Figure 3 is a cross section of an elevator rope according to Embodiment 3 of the present invention. Moreover, the constructions of a core rope 1 and a second strand layer 11 are similar to those of Embodiment 2 except for the material used for the second strand layer coating body 12.
- a third strand layer 21 is disposed on an outer periphery of the second strand layer 11.
- the third strand layer 21 has: a plurality of third strands 22 (in this case twenty) laid together on an outer periphery of the second strand layer 11; and a third strand layer coating body 23 made of a resin coated on an outer periphery.
- a rope main body 27 according to Embodiment 3 includes: the core rope 1; the second strand layer 11; and the third strands 22.
- the third strand layer coating body 23 is coated on an outer periphery of the rope main body 27.
- Each of the third strands 22 has a plurality of steel third wires 24 (in this case seven) laid together with each other.
- Central wires 24a disposed centrally among the third strands 22 and six outer peripheral wires 24b disposed on an outer periphery of the central wire 24a are used for the third wires 24.
- a diameter of the third strands 22 is set so as to be smaller than a diameter of the second strands 8.
- the third strand layer coating body 23 has: an inner layer 25; and an outer layer 26 coated on an outer periphery of the inner layer 25.
- the third strands 22 are disposed further inward than the outer peripheral surface of the inner layer 25. In other words, the third strands 22 are covered by the inner layer 25 so as not to be exposed outside the inner layer 25.
- High-friction resin materials such as polyurethane resins, for example, can be used for the materials for the inner layer 25 and the outer layer 26. It is preferable for the high-friction resins to have a coefficient of friction greater than or equal to 0.2 to enable sufficient transfer efficiency of driving force to be ensured.
- the coefficient of friction of the inner layer 25 is greater than the coefficient of friction of the outer layer 26 by twenty percent (20%) or more.
- the hardness of the outer layer 26 is greater than the hardness of the inner layer 25.
- the color of the inner layer 25 is also different than the color of the outer layer 26.
- the third strand layer coating body 23 is constituted by flame-retarded resins.
- a polyurethane resin was used as the material for the second strand layer coating body 12, but in Embodiment 3, because the second strand layer coating body 12 is not the outermost layer, a polyethylene resin, for example, can be used for the material for the second strand layer coating body 12. Specifically, it is desirable that the material for the second strand layer coating body 12 be a similar material to that of the first strand coating bodies 7, or a resin having a low melting temperature.
- a diameter of an inner layer rope constituted by the core rope 1 and the second strand layer 11 is set so as to be less than or equal to 1/27 of a diameter of the sheaves with which it is used, in other words, the sheaves around which this elevator main rope is wound.
- Diameters of all of the wires 5, 6, 9, 14, and 24 are set to less than or equal to 1/400 of the diameter of the sheaves with which they are used.
- Figure 4 is a side elevation showing the elevator rope in Figure 3 cut away in layers.
- the direction of lay of the core strand 3 and the third strands 22 and the direction of lay of the first strands 4 and the second strands 8 are in opposite directions to each other.
- the packing density of the steel wires 5, 6, 9, 14, and 24 can be increased, while suppressing the overall diameter, enabling increases in strength.
- first strand coating bodies 7, a second strand layer coating body 12, and auxiliary strand coating bodies 15 are used, the core wires 5 and the first wires 6, the first wires 6 and the second wires 9, the second wires 9 and the auxiliary strand wires 14, the auxiliary strand wires 14 and the third wires 24, and the second wires 9 and the third wires 24 are respectively prevented from contacting each other directly, enabling deterioration due to abrasion to be prevented and bending stresses to be alleviated by a buffer action, thereby enabling extension of the service life of the elevator rope.
- the third strand layer coating body 23 is disposed on a portion contacting the sheaves, the third strands 22 can be prevented from being abraded by direct contact with the sheaves. Furthermore, bending stresses arising due to the third wires 24 being crushed by the sheaves can also be alleviated, enabling extension of the service life of the elevator rope and also enabling reductions in the diameters of the sheaves.
- the third strand layer coating body 23 is disposed on an outermost periphery, abrasion of the sheaves can also be prevented, enabling a degree of freedom in selecting materials for the third wires 24 and the sheaves to be improved. Consequently, overall strength can be increased further and the sheaves can be constructed inexpensively.
- the third strand layer coating body 23, which comes into contact with the drive sheave, is constituted by high-friction resin materials, sufficient transfer efficiency of the driving force can be ensured even if the diameter of the drive sheave is reduced.
- Soft or hard polyurethane resins can also be selected freely for the third strand layer coating body 23, but in order to ensure abrasion resistance performance against minute slippage on the surface of the sheaves, it is preferable to use hard polyurethane resins having a hardness of 90 or more. In addition, in order to prevent hydrolysis from occurring in the service environment, it is also desirable that the resins be ether-based rather than ester-based.
- first strand coating bodies 7, the second strand layer coating body 12, and the auxiliary strand coating bodies 15 a material that slides freely and easily when the elevator rope is bent at the sheaves. Furthermore, the first strand coating bodies 7, the second strand layer coating body 12, and the auxiliary strand coating bodies 15 require a hardness that can resist being crushed between the wires. Hard, low-friction polyethylene materials are suitable as these materials.
- the first strand coating bodies 7, the second strand layer coating body 12, and the auxiliary strand coating bodies 15 do not require such a large coefficient of friction as the third strand layer coating body 23, and since bending by the sheaves is not as great, they do not necessarily require superior elongation characteristics. Consequently, resins such as nylon, silicon, polypropylene, or polyvinyl chloride, etc., for example, may also be used as the materials for the first strand coating bodies 7, the second strand layer coating body 12, and the auxiliary strand coating bodies 15.
- the third strands 22 have a simple seven-wire construction including a central wire 24a and six outer peripheral wires 24b, the diameter of the elevator rope can be reduced and disarray is less likely to occur, enabling coating of the third strand layer coating body 23 to be performed easily.
- rotational torque in a direction in which the lay returns may occur in interior portions due to repetitive bending by the sheaves and tension due to loads over time, and there is a risk that the load burden balance of each of the layers may collapse, reducing breaking strength and service life.
- the rotational torque in the interior portions can be balanced, enabling the overall lay-returning torque of the rope to be reduced.
- Figure 5 is a cross section showing the elevator rope in Figure 3 wound around a sheave
- Figure 6 is a cross section showing an abraded state of an outer peripheral portion of the elevator rope in Figure 5 .
- Abrasion of the outer peripheral portion is caused by sustained operation or by abnormalities.
- Traction capacity e K ⁇ 2 ⁇ ⁇
- K 2 is approximately 1.2, but K 2 decreases with the abrasion of the outer peripheral portion of the rope.
- K 2 hypothetically decreases to 1.0, since the contact angle ⁇ is constant, traction capacity cannot be ensured unless the coefficient of friction ⁇ is made twenty percent (20%) larger.
- Embodiment 3 since the coefficient of friction of the inner layer 25 is greater than the coefficient of friction of the outer layer 26, reductions in traction capacity can be suppressed even if the outer layer 26 is abraded and the inner layer 25 is exposed. In particular, because the coefficient of friction of the inner layer 25 is greater than the coefficient of friction of the outer layer 26 by twenty percent (20%) ormore, sufficient traction capacity can be maintained even if the inner layer 25 is exposed.
- the coefficient of friction of the inner layer 25 can easily be made greater than the coefficient of friction of the outer layer 26 by setting the hardness of the outer layer 26 so as to be greater than the hardness of the inner layer 25.
- the third strand layer coating body 23 is constituted by flame-retarded resins, if a fire occurs in the building, even if flames somehow get inside the hoistway, the fire can be prevented from spreading via the elevator rope. Spreading of the fire via the elevator rope can also be prevented if the third strand layer coating body 23 is constituted by flame-retardant materials.
- Figure 7 is a cross section of an elevator rope according to Embodiment 4 of the present invention.
- first strands 4 are each constituted by a plurality of first wires 6 without a first strand coating body.
- the first strands 4 are in direct contact with core wires 5 and second wires 9.
- a cross section of at least some of the core wires 5 is modified by compressing a core strand 3 from an outer periphery.
- a cross section of the first wires 6 is also modified by compressing the first strands 4 from an outer periphery.
- a cross section of at least some of the second wires 9 is modified by compressing second strands 8 from an outer periphery. The rest of the construction is similar to that of Embodiment 1.
- the modified wires 5, 6, and 9 come into contact with each other at surfaces or lines rather than points, thus enabling the wire packing density to be increased. Furthermore, contact pressure among the core wires 5, among the first wires 6, and among the second wires 9 is reduced, suppressing abrasion of the wires 5, 6, and 9. In addition, disarray of the core strand 3, the first strands 4, and the second strands 8 is prevented, enabling extension of service life.
Landscapes
- Ropes Or Cables (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Description
- The present invention relates to an elevator rope used in an elevator to suspend a car.
- In conventional elevator apparatuses, steel ropes are wound around cast-iron or steel sheaves. Sheaves having a diameter greater than or equal to forty (40) times a diameter of a rope are used in order to prevent early abrasion and wire breakage in the ropes. Consequently, in order to reduce the diameter of the sheaves, it is also necessary to reduce the diameter of the ropes. However, if the rope diameter is reduced, there is a risk that a car may be easily vibrated by load fluctuations due to baggage loaded onto the car, or passengers getting on and off, etc., or that vibrations in the ropes at the sheaves may propagate to the car. Furthermore, the number of ropes must be increased, making the construction of the elevator apparatus complicated.
- The present invention aims to solve the above problems and an object of the present invention is to provide an elevator rope enabling extension of service life while using steel wires.
- In order to achieve the above object, according to one aspect of the present invention, there is provided an elevator rope including: a core rope; and a second strand layer surrounding an outer periphery of the core rope, wherein: the core rope includes a plurality of first strands laid together with each other; each of the first strands includes: a plurality of steel first wires laid together with each other; and a first strand coating body made of a resin individually coating an outer periphery of a group of the plurality of first wires laid together; the second strand layer includes a plurality of second strands laid together on an outer periphery of the core rope; and each of the second strands includes a plurality of steel second wires laid together with each other.
- According to another aspect of the present invention, there is provided an elevator rope including: a core rope including a plurality of first strands laid together with each other; a second strand layer main body including a plurality of second strands laid together on an outer periphery of the core rope; a plurality of auxiliary strands disposed on an outer peripheral portion of the second strand layer main body in gaps between mutually-adjacent second strands; and a second strand layer coating body coating an outer periphery of the second strand layer main body and the auxiliary strands.
- According to yet another aspect of the present invention, there is provided an elevator rope including: a rope main body including a plurality of strands laid together with each other, the strands including a plurality of steel wires laid together with each other; and a coating body made of a resin coated on an outer periphery of the rope main body, wherein: the coating body includes: an inner layer; and an outer layer coated on an outer periphery of the inner layer; and a coefficient of friction of the inner layer is greater than a coefficient of friction of the outer layer.
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Figure 1 is a cross section of an elevator rope according toEmbodiment 1 of the present invention; -
Figure 2 is a cross section of an elevator rope according toEmbodiment 2 of the present invention; -
Figure 3 is a cross section of an elevator rope according toEmbodiment 3 of the present invention; -
Figure 4 is a side elevation showing the elevator rope inFigure 3 cut away in layers; -
Figure 5 is a cross section showing the elevator rope inFigure 3 wound around a sheave; -
Figure 6 is a cross section showing an abraded state of an outer peripheral portion of the elevator rope inFigure 5 ; and -
Figure 7 is a cross section of an elevator rope according toEmbodiment 4 of the present invention. - Preferred embodiments of the present invention will now be explained with reference to the drawings.
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Figure 1 is a cross section of an elevator rope according toEmbodiment 1 of the present invention. - In the figure, the elevator rope has: a
core rope 1; and asecond strand layer 2 surrounding an outer periphery of thecore rope 1. Thecore rope 1 has: a centrally-positionedcore strand 3; and a plurality of first strands 4 (in this case eight) laid together on an outer periphery of thecore strand 3. Thecore strand 3 is constituted by three or more layers. - The
core strand 3 has a plurality ofsteel core wires 5 laid together with each other. A plurality of wires having different diameters than each other are used for thecore wires 5. Specifically, a plurality oflarge core wires 5a, andsmall core wires 5b having a smaller diameter than thelarge core wires 5a disposed in gaps between thelarge core wires 5a are used. - Lay lengths of the
core wires 5 are equal to each other. Thecore wires 5 are laid together parallel to each other so as to be inmutual line contact with adjacent core wires 5 (Japanese Industrial Standards (JIS) G 3525 12.2 b). - In addition, the cross-sectional construction of the
core strand 3 in Embodiment 1 is seale, but it may also be warrington, warrington-seale, or filler wire (JIS G 3525). - Each of the
first strands 4 has: a plurality of steel first wires 6 (in this case a total of seven wires constituted by one central wire and six outer peripheral wires) laid together with each other; and a firststrand coating body 7 made of a resin independently coated on an outer periphery of this group offirst wires 6 laid together. The firststrand coating bodies 7 are composed of a polyethylene resin, for example. - The
second strand layer 2 has a plurality of second strands 8 (in this case eight) laid together on an outer periphery of thecore rope 1. Each of thesecond strands 8 has a plurality of steelsecond wires 9 laid together with each other. A plurality of wires having different diameters than each other are used for thesecond wires 9. Specifically, a plurality of largesecond wires 9a, and smallsecond wires 9b having a smaller diameter than the largesecond wires 9a disposed in gaps between the largesecond wires 9a are used for thesecond wires 9. - The number of
second strands 8 is equal to the number offirst strands 4. The lay lengths of thesecond strands 8 are also equal to the lay lengths of thefirst strands 4. In addition, thesecond strands 8 are laid parallel to thefirst strands 4 so as to be in mutual line contact with adjacentfirst strands 4. - In an elevator rope of this kind, because first
strand coating bodies 7 are disposed on thefirst strands 4, abrasion of thecore strand 3 and thefirst strands 4 is suppressed and bending stresses can be alleviated by a buffer action, enabling extension of service life. - Because the number of
first strands 4 and the number ofsecond strands 8 are equal, and the lay lengths of thefirst strands 4 and the lay lengths of thesecond strands 8 are equal, and thesecond strands 8 are laid parallel to thefirst strands 4 so as to be in mutual line contact with adjacentfirst strands 4, wire fill factor can be increased and disarray of thecore rope 1 over periods of extended use can be suppressed. - In addition, because the
core rope 1 has acore strand 3, and the lay lengths of thecore wires 5 are equal to each other, and thecore wires 5 are laid together parallel to each other so as to be in mutual line contact withadjacent core wires 5, deterioration of thecore wires 5 due to abrasion can be suppressed, enabling stable strength to be ensured. - Next,
Figure 2 is a cross section of an elevator rope according toEmbodiment 2 of the present invention. In the figure, the elevator rope has: acore rope 1; and asecond strand layer 11 surrounding an outer periphery of thecore rope 1. Thecore rope 1 is constructed in a similar manner to that ofEmbodiment 1. A second strand layermain body 16 is constituted by a plurality of second strands 8 (in this case eight) laid together on an outer periphery of thecore rope 1. Each of thesecond strands 8 is constructed in a similar manner to those ofEmbodiment 1. - The
second strand layer 11 has: a second strand layermain body 16; a plurality of auxiliary strands 13 (in this case eight) disposed on an outer peripheral portion of the second strand layermain body 16 in gaps between mutually-adjacentsecond strands 8; and a second strandlayer coating body 12 made of a resin coating an outer periphery of the second strand layermain body 16 and theauxiliary strands 13. The second strandlayer coating body 12 is constituted by a high-friction resin material having a coefficient of friction greater than or equal to 0.2, such as a polyurethane resin, for example. - Each of the
auxiliary strands 13 has: a plurality of steel auxiliary strand wires 14 (in this case seven) laid together with each other; and an auxiliarystrand coating body 15 made of a resin coated on an outer periphery. The auxiliarystrand coating bodies 15 are composed of a polyethylene resin, for example. A diameter of theauxiliary strands 13 is set so as to be smaller than a diameter of thesecond strands 8. A lay length of theauxiliary strands 13 and a lay length of thesecond strands 8 are equal. In addition, theauxiliary strands 13 are laid parallel to thesecond strands 8 so as to be in mutual line contact with adjacentsecond strands 8. - In an elevator rope of this kind, since the second strand
layer coating body 12 is disposed on a portion contacting sheaves (not shown), thesecond strands 8 are prevented from being abraded by direct contact with the sheaves. Furthermore, bending stresses arising due to thesecond wires 9 being crushed against the sheaves can also be alleviated, thereby enabling extension of the service life of the elevator rope and enabling reductions in diameters of the sheaves. - In addition, since the second strand
layer coating body 12 is disposed on an outermost periphery, abrasion of the sheaves can also be prevented, enabling a degree of freedom in selecting materials for thesecond wires 9 and the sheaves to be improved. Consequently, overall strength can be raised further and the sheaves can be constructed inexpensively. - Because the second strand
layer coating body 12, which comes into contact with a drive sheave, is constituted by a high-friction resin material such as a polyurethane resin, for example, sufficient transfer efficiency of the driving force can be ensured even if the diameter of the drive sheave is reduced. - Because the
auxiliary strands 13 are disposed in the gaps between thesecond strands 8, the packing density of the wires can be increased, enabling overall strength to be increased and also enabling extension of service life by preventing disarray of the ropes. - Because the auxiliary
strand coating bodies 15 are disposed on theauxiliary strands 13, theauxiliary strand wires 14 and thesecond wires 9 are not in direct contact with each other, enabling abrasion of theauxiliary strand wires 14 and thesecond wires 9 to be suppressed, thereby enabling extension of service life. - Because the lay lengths of the
auxiliary strands 13 and the lay lengths of thesecond strands 8 are equal, and theauxiliary strands 13 are laid parallel to thesecond strands 8, deterioration of thesecond strands 8 and theauxiliary strands 13 due to abrasion can be suppressed, enabling extension of the service life of the elevator rope. - Next,
Figure 3 is a cross section of an elevator rope according toEmbodiment 3 of the present invention. Moreover, the constructions of acore rope 1 and asecond strand layer 11 are similar to those ofEmbodiment 2 except for the material used for the second strandlayer coating body 12. - In the figure, a
third strand layer 21 is disposed on an outer periphery of thesecond strand layer 11. Thethird strand layer 21 has: a plurality of third strands 22 (in this case twenty) laid together on an outer periphery of thesecond strand layer 11; and a third strandlayer coating body 23 made of a resin coated on an outer periphery. - A rope
main body 27 according toEmbodiment 3 includes: thecore rope 1; thesecond strand layer 11; and thethird strands 22. The third strandlayer coating body 23 is coated on an outer periphery of the ropemain body 27. - Each of the
third strands 22 has a plurality of steel third wires 24 (in this case seven) laid together with each other.Central wires 24a disposed centrally among thethird strands 22 and six outerperipheral wires 24b disposed on an outer periphery of thecentral wire 24a are used for thethird wires 24. A diameter of thethird strands 22 is set so as to be smaller than a diameter of thesecond strands 8. - The third strand
layer coating body 23 has: aninner layer 25; and anouter layer 26 coated on an outer periphery of theinner layer 25. Thethird strands 22 are disposed further inward than the outer peripheral surface of theinner layer 25. In other words, thethird strands 22 are covered by theinner layer 25 so as not to be exposed outside theinner layer 25. - High-friction resin materials such as polyurethane resins, for example, can be used for the materials for the
inner layer 25 and theouter layer 26. It is preferable for the high-friction resins to have a coefficient of friction greater than or equal to 0.2 to enable sufficient transfer efficiency of driving force to be ensured. - In addition, the coefficient of friction of the
inner layer 25 is greater than the coefficient of friction of theouter layer 26 by twenty percent (20%) or more. Furthermore, the hardness of theouter layer 26 is greater than the hardness of theinner layer 25. The color of theinner layer 25 is also different than the color of theouter layer 26. In addition, the third strandlayer coating body 23 is constituted by flame-retarded resins. - In
Embodiment 2, a polyurethane resin was used as the material for the second strandlayer coating body 12, but inEmbodiment 3, because the second strandlayer coating body 12 is not the outermost layer, a polyethylene resin, for example, can be used for the material for the second strandlayer coating body 12. Specifically, it is desirable that the material for the second strandlayer coating body 12 be a similar material to that of the firststrand coating bodies 7, or a resin having a low melting temperature. - A diameter of an inner layer rope constituted by the
core rope 1 and thesecond strand layer 11 is set so as to be less than or equal to 1/27 of a diameter of the sheaves with which it is used, in other words, the sheaves around which this elevator main rope is wound. Diameters of all of thewires -
Figure 4 is a side elevation showing the elevator rope inFigure 3 cut away in layers. The direction of lay of thecore strand 3 and thethird strands 22 and the direction of lay of thefirst strands 4 and thesecond strands 8 are in opposite directions to each other. - Using this kind of construction, the packing density of the
steel wires - Since first
strand coating bodies 7, a second strandlayer coating body 12, and auxiliarystrand coating bodies 15 are used, thecore wires 5 and thefirst wires 6, thefirst wires 6 and thesecond wires 9, thesecond wires 9 and theauxiliary strand wires 14, theauxiliary strand wires 14 and thethird wires 24, and thesecond wires 9 and thethird wires 24 are respectively prevented from contacting each other directly, enabling deterioration due to abrasion to be prevented and bending stresses to be alleviated by a buffer action, thereby enabling extension of the service life of the elevator rope. - In addition, since the third strand
layer coating body 23 is disposed on a portion contacting the sheaves, thethird strands 22 can be prevented from being abraded by direct contact with the sheaves. Furthermore, bending stresses arising due to thethird wires 24 being crushed by the sheaves can also be alleviated, enabling extension of the service life of the elevator rope and also enabling reductions in the diameters of the sheaves. - Furthermore, since the third strand
layer coating body 23 is disposed on an outermost periphery, abrasion of the sheaves can also be prevented, enabling a degree of freedom in selecting materials for thethird wires 24 and the sheaves to be improved. Consequently, overall strength can be increased further and the sheaves can be constructed inexpensively. - Because the third strand
layer coating body 23, which comes into contact with the drive sheave, is constituted by high-friction resin materials, sufficient transfer efficiency of the driving force can be ensured even if the diameter of the drive sheave is reduced. - Soft or hard polyurethane resins can also be selected freely for the third strand
layer coating body 23, but in order to ensure abrasion resistance performance against minute slippage on the surface of the sheaves, it is preferable to use hard polyurethane resins having a hardness of 90 or more. In addition, in order to prevent hydrolysis from occurring in the service environment, it is also desirable that the resins be ether-based rather than ester-based. - In addition, flexing resistance can be reduced by selecting as the materials for the first
strand coating bodies 7, the second strandlayer coating body 12, and the auxiliary strand coating bodies 15 a material that slides freely and easily when the elevator rope is bent at the sheaves. Furthermore, the firststrand coating bodies 7, the second strandlayer coating body 12, and the auxiliarystrand coating bodies 15 require a hardness that can resist being crushed between the wires. Hard, low-friction polyethylene materials are suitable as these materials. - The first
strand coating bodies 7, the second strandlayer coating body 12, and the auxiliarystrand coating bodies 15 do not require such a large coefficient of friction as the third strandlayer coating body 23, and since bending by the sheaves is not as great, they do not necessarily require superior elongation characteristics. Consequently, resins such as nylon, silicon, polypropylene, or polyvinyl chloride, etc., for example, may also be used as the materials for the firststrand coating bodies 7, the second strandlayer coating body 12, and the auxiliarystrand coating bodies 15. - In addition, since the
third strands 22 have a simple seven-wire construction including acentral wire 24a and six outerperipheral wires 24b, the diameter of the elevator rope can be reduced and disarray is less likely to occur, enabling coating of the third strandlayer coating body 23 to be performed easily. - In an elevator rope having a multilayered construction, rotational torque in a direction in which the lay returns may occur in interior portions due to repetitive bending by the sheaves and tension due to loads over time, and there is a risk that the load burden balance of each of the layers may collapse, reducing breaking strength and service life.
- In regard to this, by laying the
first strands 4 in a reverse direction to thecore strand 3, and laying thethird strands 22 in a reverse direction to thesecond strands 8, the rotational torque in the interior portions can be balanced, enabling the overall lay-returning torque of the rope to be reduced. - In addition, in a rope having no coating body on the outermost layer, service life is determined by the number of cycles of tension and bending stresses at the sheaves, and wire breakage occurs first in the wires at the rope surface. However, in a rope using a third strand
layer coating body 23, wires in interior portions, rather than at the surface of the rope, are preferentially more likely to break due to bending fatigue since contact pressure with the sheaves is reduced. - The number of service life cycles determined by bending fatigue of this kind, according to experimental research by the inventors, was found to have a relationship represented by the following expressions:
- Service life formulas
- Formula for breakage of wires contacting sheaves:
- Formula for breakage of wires inside rope:
- Here, the value of D/d required to make the number of service life cycles Nn equal to the value of Nc when D/d = 40 is found to be 26.7. Consequently, if a service life equivalent to conditions under which general conventional elevator ropes have been used, that is, when D/d = 40, is to be ensured, the diameter of the inner layer rope must be made less than or equal to 1/27 of the diameter of the sheaves. In other words, sheaves having a diameter greater than or equal to twenty-seven (27) times that of the inner layer rope must be used.
- In the above elevator rope, because the diameters of all of the
wires - Next,
Figure 5 is a cross section showing the elevator rope inFigure 3 wound around a sheave, andFigure 6 is a cross section showing an abraded state of an outer peripheral portion of the elevator rope inFigure 5 . Abrasion of the outer peripheral portion is caused by sustained operation or by abnormalities. In the state inFigure 6 , there is a risk that traction capacity will decrease since the state of contact of the rope with arope groove 30 is looser than the state inFigure 5 . -
- K2 is a coefficient dependent on the state of contact with the rope groove (normally the shape of the groove);
- θ is a contact angle of the elevator rope on the sheave; and
- µ is a coefficient of friction.
- Now, in a normal state of contact with a rope groove having a U-shaped cross section, K2 is approximately 1.2, but K2 decreases with the abrasion of the outer peripheral portion of the rope. Thus, it can be seen that if K2 hypothetically decreases to 1.0, since the contact angle θ is constant, traction capacity cannot be ensured unless the coefficient of friction µ is made twenty percent (20%) larger.
- Judging only from the viewpoint of traction capacity, it might seem advantageous for the coefficient of friction of the elevator rope to be made as high as possible. However, if for some reason, the car goes past the uppermost floor, and the counterweight collides with buffers in a bottom portion of the hoistway, it is desirable to make the elevator rope slip relative to the sheaves so that the car is not raised any further, and such performance may also be required by law.
- In
Embodiment 3, since the coefficient of friction of theinner layer 25 is greater than the coefficient of friction of theouter layer 26, reductions in traction capacity can be suppressed even if theouter layer 26 is abraded and theinner layer 25 is exposed. In particular, because the coefficient of friction of theinner layer 25 is greater than the coefficient of friction of theouter layer 26 by twenty percent (20%) ormore, sufficient traction capacity can be maintained even if theinner layer 25 is exposed. - Furthermore, because the lower the hardness of the polyurethane is, the greater its coefficient of friction is, the coefficient of friction of the
inner layer 25 can easily be made greater than the coefficient of friction of theouter layer 26 by setting the hardness of theouter layer 26 so as to be greater than the hardness of theinner layer 25. - In addition, by making the color of the inner layer 25 a different color than that of the
outer layer 26, exposure of theinner layer 25 due to abrasion of theouter layer 26 can be easily checked by visual inspection, enabling the necessity of rope replacement to be easily determined. - Furthermore, because the third strand
layer coating body 23 is constituted by flame-retarded resins, if a fire occurs in the building, even if flames somehow get inside the hoistway, the fire can be prevented from spreading via the elevator rope. Spreading of the fire via the elevator rope can also be prevented if the third strandlayer coating body 23 is constituted by flame-retardant materials. - Next,
Figure 7 is a cross section of an elevator rope according toEmbodiment 4 of the present invention. In the figure,first strands 4 are each constituted by a plurality offirst wires 6 without a first strand coating body. Thus, thefirst strands 4 are in direct contact withcore wires 5 andsecond wires 9. - A cross section of at least some of the
core wires 5 is modified by compressing acore strand 3 from an outer periphery. A cross section of thefirst wires 6 is also modified by compressing thefirst strands 4 from an outer periphery. In addition, a cross section of at least some of thesecond wires 9 is modified by compressingsecond strands 8 from an outer periphery. The rest of the construction is similar to that ofEmbodiment 1. - In an elevator rope of this kind, the modified
wires core wires 5, among thefirst wires 6, and among thesecond wires 9 is reduced, suppressing abrasion of thewires core strand 3, thefirst strands 4, and thesecond strands 8 is prevented, enabling extension of service life.
Claims (10)
- An elevator rope comprising:a core rope (1); anda second strand layer (11) surrounding an outer periphery of said core rope (1),characterized in that:said core rope (1) comprises a plurality of first strands (4) laid together with each other, each of said first strands (4) comprises a plurality of steel first wires (6) laid together with each other, and a first strand coating body (7) made of a resin individually coating an outer periphery of a group of said plurality of first wires (6) laid together; andsaid second strand layer (11) comprises a plurality of second strands (8) laid together on an outer periphery of said core rope (1), and each of said second strands (8) comprises a plurality of steel second wires (9) laid together with each other.
- The elevator rope according to Claim 1, wherein:said first strands (4) and said second strands (8) are equal in number;a lay length of said first strands (4) and a lay length of said second strands (8) are equal; andsaid second strands (8) are laid parallel to said first strands (4) so as to be in mutual line contact with adjacent first strands (4).
- The elevator rope according to Claim 1, wherein:said core rope (1) further comprises a core strand (3) including a plurality of steel core wires (5) laid together with each other;said first strands (4) are laid together on an outer periphery of said core strand (3);lay lengths of said core wires (5) are equal to each other; andsaid core wires (5) are laid together parallel to each other so as to be in mutual line contact with adjacent core wires (5).
- The elevator rope according to Claim 1, wherein said second strand layer (11) further comprises a second strand layer coating body (12) made of a resin coated on an outer periphery thereof.
- The elevator rope according to Claim 1, further comprising:a third strand layer (21) comprising:a plurality of third strands (22) each including a plurality of steel third wires (24) laid together with each other, said third strands (22) being laid together on an outer periphery of said second strand layer (11); anda third strand layer coating body (23) made of a resin coated on an outer periphery;wherein:said core rope (1) further comprises a core strand (3) including a plurality of steel core wires (5) laid together with each other;said first strands (4) are laid together on an outer periphery of said core strand (3);said second strand layer (11) further comprises a second strand layer coating body (12) made of a resin coated on an outer periphery thereof; anda direction of lay of said core strand (3) and said third strands (22) and a direction of lay of said first strands (4) and said second strands (8) are in opposite directions to each other.
- An elevator rope comprising:a core rope (1) comprising a plurality of first strands (4) laid together with each other;a second strand layer main body (16) comprising a plurality of second strands (8) laid together on an outer periphery of said core rope (1);a plurality of auxiliary strands (13) disposed on an outer peripheral portion of said second strand layer main body (16) in gaps between mutually-adjacent second strands (8); anda second strand layer coating body (12) coating an outer periphery of said second strand layer main body (16) and said auxiliary strands (13).
- The elevator rope according to Claim 6, wherein:a lay length of said auxiliary strands (13) and a lay length of said second strands (8) are equal; andsaid auxiliary strands (13) are laid parallel to said second strands (8) so as to be in mutual line contact with adjacent second strands (8).
- An elevator rope comprising:a rope main body (27) comprising a plurality of strands (4, 8, 13, 22) laid together with each other, said strands (4, 8, 13, 22) including a plurality of steel wires (5, 6, 9, 14, 24) laid together with each other; anda coating body (23) made of a resin coated on an outer periphery of said rope main body (27),wherein:said coating body (23) comprises:an inner layer (25); andan outer layer (26) coated on an outer periphery of said inner layer (25); anda coefficient of friction of said inner layer (25) is greater than a coefficient of friction of said outer layer (26).
- The elevator rope according to Claim 8, wherein a hardness of said outer layer (26) is greater than a hardness of said inner layer (25).
- The elevator rope according to Claim 8, wherein a color of said inner layer (25) is different than a color of said outer layer (26).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/000690 WO2004065276A1 (en) | 2003-01-24 | 2003-01-24 | Elevator rope |
Publications (3)
Publication Number | Publication Date |
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EP1586526A1 EP1586526A1 (en) | 2005-10-19 |
EP1586526A4 EP1586526A4 (en) | 2011-06-01 |
EP1586526B1 true EP1586526B1 (en) | 2015-09-30 |
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ID=32750600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP03815449.8A Expired - Lifetime EP1586526B1 (en) | 2003-01-24 | 2003-01-24 | Elevator rope |
Country Status (5)
Country | Link |
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EP (1) | EP1586526B1 (en) |
JP (1) | JP4312719B2 (en) |
KR (1) | KR100623815B1 (en) |
CN (2) | CN100335398C (en) |
WO (1) | WO2004065276A1 (en) |
Families Citing this family (25)
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US9546447B2 (en) | 2005-10-27 | 2017-01-17 | Otis Elevator Company | Elevator load bearing assembly having a jacket with multiple polymer compositions |
WO2008023434A1 (en) * | 2006-08-25 | 2008-02-28 | Mitsubishi Electric Corporation | Elevator rope |
SG141343A1 (en) * | 2006-09-29 | 2008-04-28 | Inventio Ag | Synthetic fibre cable and lift installation with such a synthetic fibre cable |
CN101135116B (en) * | 2007-10-22 | 2010-04-21 | 张�浩 | High-velocity elevator wire rope |
CN102459052B (en) * | 2009-06-08 | 2014-10-29 | 三菱电机株式会社 | Rope for elevators and process for producing same |
EP2511219A1 (en) * | 2009-12-08 | 2012-10-17 | Mitsubishi Electric Corporation | Rope for elevator |
CN102127876B (en) * | 2010-10-22 | 2013-08-28 | 江苏赛福天钢索股份有限公司 | Micro rotating wire rope for high-rise express elevator and preparation method thereof |
CA2898167C (en) | 2013-01-14 | 2021-10-19 | Actuant Corporation | Rope having a low-friction strand |
JP6077941B2 (en) * | 2013-06-07 | 2017-02-08 | 株式会社日立製作所 | Elevator wire rope |
CN103590273A (en) * | 2013-11-20 | 2014-02-19 | 夏金云 | Rope capable of avoiding breakage danger |
KR101601894B1 (en) * | 2014-06-19 | 2016-03-09 | 고려제강 주식회사 | Elevator Rope and Method for manufacturing the same |
JP6223599B2 (en) * | 2014-11-18 | 2017-11-01 | 三菱電機株式会社 | Elevator rope and elevator apparatus using the same |
KR101667991B1 (en) * | 2015-03-19 | 2016-10-21 | 고려제강 주식회사 | Wire rope for elevator |
BR112018007015B1 (en) * | 2015-10-21 | 2022-07-12 | Liebherr-Components Biberach Gmbh | DEVICE FOR DETECTION OF THE DISPOSAL MOMENT OF A HIGH STRENGTH FIBER CABLE AND LIFTING DEVICE |
KR101843142B1 (en) * | 2016-01-28 | 2018-03-28 | 고려제강 주식회사 | Wire Rope for Elevator |
CN105544259A (en) * | 2016-02-25 | 2016-05-04 | 天津高盛钢丝绳有限公司 | Wear-resistant durable steel wire rope |
CN105755879A (en) * | 2016-03-30 | 2016-07-13 | 苏州卡之美电子科技有限公司 | Elevator tractive rope |
JP6417362B2 (en) * | 2016-05-30 | 2018-11-07 | 株式会社テザックワイヤロープ | Wire rope for moving cable |
CN107630374A (en) * | 2016-08-25 | 2018-01-26 | 桐乡守敬应用技术研究院有限公司 | A kind of high-strength damping steel wire rope |
JP6760824B2 (en) * | 2016-11-11 | 2020-09-23 | 神鋼鋼線工業株式会社 | High strength wire rope |
CN112955602B (en) * | 2018-10-23 | 2023-07-14 | 贝卡尔特先进帘线阿尔特公司 | Steel wire rope, coated steel wire rope and belt comprising steel wire rope |
CN109706760A (en) * | 2018-12-30 | 2019-05-03 | 山东莱威新材料有限公司 | A kind of anti-aging wear-resisting type is mining hawser and its processing method |
WO2021225545A1 (en) | 2020-05-08 | 2021-11-11 | Celik Halat Ve Tel Sanayi Anonim Sirketi | A rope |
JPWO2022079836A1 (en) * | 2020-10-14 | 2022-04-21 | ||
CN113957734A (en) * | 2021-10-21 | 2022-01-21 | 微山金源煤矿 | Steel wire rope connecting sleeve inserting device |
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US3457717A (en) * | 1968-08-02 | 1969-07-29 | Bethlehem Steel Corp | Plastic coated cable and method of making same |
MXPA95001137A (en) * | 1994-03-02 | 2004-02-16 | Inventio Ag | Cable as suspension means for lifts. |
US5881843A (en) * | 1996-10-15 | 1999-03-16 | Otis Elevator Company | Synthetic non-metallic rope for an elevator |
JP3975044B2 (en) * | 2000-01-07 | 2007-09-12 | 東京製綱株式会社 | Multi-layer strand type wire rope |
JP4727123B2 (en) * | 2000-08-09 | 2011-07-20 | 三菱電機株式会社 | Elevator equipment |
JP3660259B2 (en) * | 2001-03-19 | 2005-06-15 | 東京製綱株式会社 | Wire rope |
JP3910377B2 (en) * | 2001-04-25 | 2007-04-25 | 東京製綱株式会社 | Wire rope |
JP4064668B2 (en) * | 2001-12-26 | 2008-03-19 | 東京製綱株式会社 | Composite wire rope |
JP3660319B2 (en) * | 2002-03-08 | 2005-06-15 | 東京製綱株式会社 | Wire rope |
-
2003
- 2003-01-24 CN CNB038021781A patent/CN100335398C/en not_active Expired - Lifetime
- 2003-01-24 WO PCT/JP2003/000690 patent/WO2004065276A1/en active Application Filing
- 2003-01-24 JP JP2004544188A patent/JP4312719B2/en not_active Expired - Fee Related
- 2003-01-24 CN CNA2007100896870A patent/CN101092224A/en active Pending
- 2003-01-24 KR KR1020047011037A patent/KR100623815B1/en active IP Right Grant
- 2003-01-24 EP EP03815449.8A patent/EP1586526B1/en not_active Expired - Lifetime
Also Published As
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CN100335398C (en) | 2007-09-05 |
KR20040086274A (en) | 2004-10-08 |
CN1615266A (en) | 2005-05-11 |
EP1586526A1 (en) | 2005-10-19 |
KR100623815B1 (en) | 2006-09-14 |
CN101092224A (en) | 2007-12-26 |
EP1586526A4 (en) | 2011-06-01 |
JP4312719B2 (en) | 2009-08-12 |
WO2004065276A1 (en) | 2004-08-05 |
JPWO2004065276A1 (en) | 2006-05-18 |
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