KR20130095779A - Rope for elevator - Google Patents

Rope for elevator Download PDF

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Publication number
KR20130095779A
KR20130095779A KR1020137013502A KR20137013502A KR20130095779A KR 20130095779 A KR20130095779 A KR 20130095779A KR 1020137013502 A KR1020137013502 A KR 1020137013502A KR 20137013502 A KR20137013502 A KR 20137013502A KR 20130095779 A KR20130095779 A KR 20130095779A
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KR
South Korea
Prior art keywords
layer
rope
core
strands
strand
Prior art date
Application number
KR1020137013502A
Other languages
Korean (ko)
Inventor
아츠시 미츠이
아츠시 후나다
미치오 무라이
Original Assignee
미쓰비시덴키 가부시키가이샤
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Application filed by 미쓰비시덴키 가부시키가이샤 filed Critical 미쓰비시덴키 가부시키가이샤
Priority to PCT/JP2010/069068 priority Critical patent/WO2012056529A1/en
Publication of KR20130095779A publication Critical patent/KR20130095779A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00Other common features of elevators
    • B66B7/06Arrangements of ropes or cables
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/06Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0673Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D07B1/0686Ropes 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
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/16Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/162Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/16Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
    • D07B1/165Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber inlay
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2201/00Ropes or cables
    • D07B2201/10Rope or cable structures
    • D07B2201/1028Rope or cable structures characterised by the number of strands
    • D07B2201/1036Rope or cable structures characterised by the number of strands nine or more strands respectively forming multiple layers
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2501/00Application field
    • D07B2501/20Application field related to ropes or cables
    • D07B2501/2007Elevators

Abstract

In an elevator rope, an outer layer strand is twisted on the outer circumference of the inner layer rope, and a resin outer layer covering is coated on the outer circumference of the layer of the outer layer strand. At the center of the inner layer rope, a fiber core made of synthetic fiber is arranged. As the fiber core, for example, a round bar core made of resin or a twisted core made of resin is used. On the outer side of the fiber core, a plurality of inner layer strands are twisted. A resin inner layer covering is coated on the outer circumference of the layer of the inner layer strands. The inner layer strands and the outer layer strands are formed by twisting a plurality of steel wires.

Description

Elevator rope {ROPE FOR ELEVATOR}
The present invention relates to an elevator rope having a plurality of strands in which a plurality of steel wires are twisted.
Conventional elevator ropes include an inner layer rope, an inner layer covering made of resin covering the outer circumference of the inner layer rope, a plurality of outer layer strands twisted on the outer circumference of the inner layer coating, and an outer circumference of the layer of the outer layer strand. It has the outer layer coating body made of resin to coat | cover. The inner layer rope has a core rope including a plurality of core strands, a core rope covering body coated on the outer circumference of the core rope, and a plurality of inner layer strands twisted on the outer circumference of the core rope covering. The core strand, the inner layer strand, and the outer layer strand are each formed by twisting a plurality of steel wires (see Patent Document 1, for example).
[Patent Document 1] Japanese Patent No. 4108607
In the conventional elevator rope as described above, a straight core strand is disposed at the center of the core rope. Since this straight core strand is not twisted with other strands, it is difficult to receive the restraining force from other strands. For this reason, for example, tension arises in a part of the element wire which comprises a linear core strand from manufacturing problems, such as the non-uniformity of an element wire tension at the time of manufacture, and an element wire disconnects prematurely, or, conversely, it loosens. If the element wire becomes loose, the disconnected or loose element wire protrudes out of the elevator rope, and there is a concern that the need for early replacement of the elevator rope occurs.
This invention is made | formed in order to solve the above subjects, and an object of this invention is to obtain the elevator rope which can suppress the protrusion of an element wire to the exterior, and can prolong lifetime.
An elevator rope according to the present invention has an inner layer rope including a plurality of inner layer strands in which a plurality of steel wires are twisted, and an outer circumference thereof is coated with a resin outer layer coating member, and the synthetic inner rope is synthesized at the center of the inner layer rope. A fiber core made of fiber is disposed.
In the elevator rope of the present invention, by placing a fiber core made of synthetic fibers in the center of the inner layer rope, the strands that are not twisted with other strands are not disposed in the center of the inner layer rope, whereby all the strands restrain the restraining force from the other strand. Since it can receive, it can suppress the protrusion of element wire to the outside and can prolong life.
1 is a sectional view of an elevator rope according to Embodiment 1 of the present invention.
2 is a cross-sectional view of an elevator rope according to Embodiment 2 of the present invention.
3 is a cross-sectional view of an elevator rope according to Embodiment 3 of the present invention.
4 is a cross-sectional view of an elevator rope according to Embodiment 4 of the present invention.
5 is a cross-sectional view of an elevator rope according to Embodiment 5 of the present invention.
6 is a cross-sectional view of an elevator rope according to Embodiment 6 of the present invention.
It is a side view which shows an example of the elevator apparatus to which the elevator rope of embodiment 1-6 is applied.
Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1
1 is a sectional view of an elevator rope according to Embodiment 1 of the present invention. In the figure, a fiber core 1 is arranged at the center of the elevator rope. As the fiber core 1, a round bar core (solid core) made of synthetic fibers made of polypropylene or polyethylene is used, for example.
On the outer circumference of the fiber core 1, a plurality of inner strands 2 are twisted (here, eight). Each inner layer strand 2 is formed by twisting a plurality of steel wires. More specifically, each inner layer strand 2 has a core wire disposed at the center, a plurality of intermediate strands twisted on the outer periphery of the core wire, and a plurality of outer layer strands twisted on the outer periphery of the layer of the intermediate strand. The diameter of the intermediate element wire is smaller than the diameter of the core wire and the outer layer wire.
The outer circumference of the layer of the inner layer strands 2 is covered with the inner layer cover 3 made of resin. The inner layer rope 4 is comprised by the fiber core 1, the inner layer strand 2, and the inner layer coating body 3. As shown in FIG. The inner layer covering 3 is in contact with the fiber core 1 between the inner layer strands 2 adjacent to each other. The fiber core 1 and the inner layer cover 3 are kept in a state of being pinched between the inner layer strands 2 adjacent to each other even when the tension is applied in use.
On the outer periphery of the inner layer cover 3, a plurality of outer strands 5 (here 19) are twisted. The diameter of the outer layer strands 5 is smaller than the diameter of the inner layer strands 2. Each outer layer strand 5 is constructed by twisting a plurality of forced wires. More specifically, each outer layer strand 5 has a core wire disposed at the center and a plurality of outer layer wires twisted on the outer periphery of the core wire. The diameter of the outer layer wire is equal to the diameter of the deep wire.
The outer circumference of the layer of the outer layer strands 5 is covered with the outer layer covering 6 made of resin. The outer layer strands 5 and the outer layer covering 6 are bonded by an adhesive. The outer layer cover 6 is in contact with the inner layer cover 3 between the outer layer strands 5 adjacent to each other. The inner layer cover body 3 and the outer layer cover body 6 are kept in a state of being clamped between the outer layer strands 5 adjacent to each other even in a state where tension is applied at the time of use.
As a material of the inner layer coating body 3, resin which has some hardness, such as polyethylene or a polypropylene, is used, for example. The inner layer cover 3 is made of a resin crosslinked by incorporating a cross-linking agent. In addition, the inner layer coating member 3 preferably has a low coefficient of friction in order to increase the flexibility as an elevator rope and to reduce the loss generated when the inner layer cover 3 is bent by the sheave.
In this manner, the material of the inner layer cover 3 is preferably harder than the material of the outer layer cover 6 and has a lower coefficient of friction for the same metal material. Moreover, since slippage generate | occur | produces between the inner layer strand 2 and the inner layer strand 2, it is preferable that it is excellent in abrasion resistance.
Since the outer layer covering 6 needs to ensure the traction ability with the sheave, the friction coefficient with respect to the sheave is 0.2 or more, and it is comprised by resin which has sufficient abrasion resistance, for example, polyurethane. . In addition, the outer layer strands 5 are made of resin crosslinked by incorporating a crosslinking agent.
In such an elevator rope, since the fiber core 1 is arrange | positioned at the center, the strand of the steel which is not twisted with another strand does not exist. In other words, all the strands 2 and 5 are necessarily twisted with the other strands 2 and 5. For this reason, by the frictional force between element wires and the strands 2 and 5, it is suppressed that a disconnection or a loose element wire protrudes out of an elevator rope.
In addition, when a load acts on an elevator rope, each strand 2, 5 shares a load, and a rope cross section deforms in the direction which reduces the clearance gap between each strand 2, 5, By maintaining the pressure which 1) acts from each strand 2 and 5, the clearance gap between strands 2 and 5 can be ensured, or the contact pressure between strands 2 and 5 can be reduced.
Moreover, since the elevator rope of Embodiment 1 has the inner layer rope 4 inside, it is high strength compared with the rope of 8 strands or 6 strands of the same diameter which has a fiber core in the center (referred to as a conventional rope). For this reason, it can be considered that the load acting on the elevator rope of Embodiment 1 is larger than the load acting on the conventional rope, and the pressure acting on the central fiber core 1 from each of the strands 2 and 5 becomes larger. .
On the other hand, when the core which braided the natural fiber (for example, hemp) generally used for rope conventionally is used as the fiber core 1, the fiber itself has a cavity, and also the fiber There is also a gap therebetween, the diameter decreases due to the pressure from the strands 2 and 5, and the shape collapse of the whole rope is likely to occur. In addition, aging and deterioration are also added, which may make it more difficult to maintain the pressure from the strands 2 and 5.
However, in Embodiment 1, the filling density of the fiber core 1 itself can be raised by using the round bar core made of synthetic fibers as the fiber core 1, and generation | occurrence | production of the shape collapse can be suppressed with respect to a large load.
In conventional ropes, rope grease is impregnated to the center of the fiber core, thereby reducing the contact pressure between the strands inside the rope or reducing the frictional force. On the other hand, in the elevator rope of Embodiment 1, the outer layer strand 5 is spaced apart from the sheave groove surface by the outer layer cover 6, and the outer layer cover 6 and the inner layer cover 3 ), The strands 2 and 5 are spaced apart from each other, and metals do not directly contact each other, so that the wear of the strands 2 and 5 can be prevented, and the inner layer cover 3 and the outer layer cover ( By the buffer action of 6), the bending stress generated in the elevator rope can be reduced.
Moreover, since the fiber core 1 is comprised from the comparatively low friction synthetic fiber, it is the strands 2 and 5 with respect to the movement of each strand 2 and 5 when the rope tension load and bending load for elevators apply | acted. ) Wear can be reduced. Thus, there is no need to impregnate the rope grease inside. Thereby, it is not necessary to worry about the influence of oil by coating failure at the time of rope manufacture, especially during coating molding.
In addition, since the number of the outer layer strands 5 is twice or more than the number of the inner layer strands 2 and is 16 or more, the outer layer strands 5 are received from the sheave groove when the elevator rope is caught by the sheave. The pressure can be reduced.
Furthermore, in order to generate traction with the sheave, the outer layer cover 6 needs to be adhered to the outer layer strands 5, and before the outer layer cover 6 is adhered to the outer layer strands 5, It is necessary to wash | clean sufficiently the dirt and oil component which adhered at the time of manufacture of the outer layer strand 5, etc. At this time, if the structure of the outer layer strands 5 is complicated, the inner layer strands 5 cannot be sufficiently washed. On the other hand, since the outer layer strand 5 of Embodiment 1 is a two-layer structure which tied the one layer of element wire to the outer periphery of a center element wire, the structure is simple and sufficient the outer layer strand 5, ensuring sufficient strength, Moreover, it can wash | clean easily easily and the outer layer coating body 6 can be firmly adhere | attached to the outer layer strand 5.
In addition, by reducing the element diameter, the bending stress generated when passing through the sheave having a small diameter can be reduced as compared with a conventional rope having the same diameter. By increasing the number of the outer layer strands 5, the element wires constituting the outer layer strands 5 can be reduced in size.
In addition, since the inner layer strand 2 has a three-layer structure in which two strands of strands are bound to the outer periphery of the center strand, the mounting density of the whole rope can be increased and the bending stress generated can be reduced. Moreover, it is preferable to set the inner layer strand 2 into 6-8 pieces. When the number of inner layer strands 2 is less than six, the cross section of each inner layer strand 2 becomes large, or the clearance gap between inner layer strands 2 becomes large, On the contrary, the number of inner layer strands 2 is eight. This is because if there are more than pieces, the whole rope needs to be multilayered in order to increase the mounting density.
As a method of obtaining the effect of improving the mounting density and reducing the bending stress, there is also a method of further multilayering the whole rope. However, the number of strands and the number of wires increases, the manufacturing process increases, and the manufacturing cost becomes unrealistic.
In the case of the elevator rope of Embodiment 1, not only is a simple structure in which each outer layer strand 5 consists of seven element wires, but also the inner layer strand 2 is also a relatively simple structure of a three-layer structure, so that the number of strands Even if there are 20 or more, it is possible to set the number of wires of the whole rope to 300 or less.
In addition, when applying a conventional rope, since the sheave diameter D with respect to the rope diameter d is set to 40 times or more, if a rope diameter is 12 mm, for example, a sheave diameter is set to 480 mm or more. In the case of the most commonly used 8 x S (19) diameter 12 mm (d), the strand diameter (δ) of the outer layer strand is about 0.8 mm, the bending occurs when applied with a sheave of 480 mm (D) D / δ = 600, an index for evaluating stress, and the ratio d / δ = 15 of the element diameter of the outer strand to the rope diameter.
On the other hand, in the rope of Embodiment 1, since the fiber core 1 is arrange | positioned at the center of the inner layer rope 4 and the inner layer coating body 3 and the outer layer coating body 6, Do not touch directly. As described above, in the case of not directly contacting the metal, as described in Patent Document 1, even when using D / d = 27, it is equivalent to using D / d = 40 in combination with a rope and a sheave. The service life can be ensured, at which time D1 / δ1 = 600 × 27/40 = 405.
From the above formula, the sheave diameter of the conventional rope is 12 by setting the element diameter of the outer strand to d1 / δ1? 12 / 0.59 = 20.3 ≒ 20.5 with respect to δ1 = 240/405 = 0.59 mm and the rope diameter d1. It becomes possible to reduce to 1/2 (D / d = 20) with respect to the minimum sheave diameter phi 480 which satisfies D / d ≧ 40 when using mm.
In this way, by twisting the rope in multiple layers and increasing the number of outer layer strands 5, it is possible to reduce the diameter of the element wire to be configured and to satisfy the above conditions. It is possible to halve the diameter and to secure an equivalent lifetime.
Moreover, as a stress which generate | occur | produces in the element wire which comprises each strand 2, 5, the whole part by making the diameter of the most severe outer layer element wire (outer wire of the outermost line) among the element wire of each strand 2, 5 substantially equal. It is possible to equalize the bending stress generated at. This prevents premature breakage of a particular portion, and does not lead to premature life due to the occurrence of a shape collapse of the rope.
It is a matter of course to make the diameter of an outer layer element wire the same in order to acquire the said effect, but considering the design guide | route of a rope, it is preferable to suppress the diameter difference of an outer layer element wire to 10% or less substantially.
Embodiment 2 Fig.
Next, FIG. 2 is sectional drawing of the elevator rope by Embodiment 2 of this invention. In this Embodiment 2, the core twisted by the synthetic fiber which consists of polypropylene or polyethylene is used as the fiber core 7, for example. The outer circumference of the fiber core 7 is covered with a resin core coating 8. As the material of the core coating 8, the same material as the inner layer coating 3 can be used. The inner layer rope 4 of Embodiment 2 is comprised by the fiber core 7, the core coating body 8, the inner layer strand 2, and the inner layer coating body 3. As shown in FIG. The other configuration is the same as in the first embodiment.
In such an elevator rope, since the core covering body 8 is filled in the gap between the ropes constituting the fiber core 7, the filling rate is high, and the deterioration over time can be reduced. The same effect as in the used embodiment 1 can be obtained.
Embodiment 3:
Next, FIG. 3 is sectional drawing of the elevator rope by Embodiment 3 of this invention. The inner layer rope 4 of Embodiment 3 is comprised by the core rope 9, the inner layer strand 2, and the inner layer coating body 3. As shown in FIG. The core rope 9 is a core coated on the outer periphery of the fiber core 10, a plurality of core strands 11 (here, six) twisted on the outer periphery of the fiber core 10 and a layer of the core strand 11. It is comprised by the rope coating body 12. As the fiber core 10, the round bar core made from synthetic fibers is used similarly to the first embodiment. As a material of the core rope coating body 12, the same material as the inner layer coating body 3 can be used.
Each core strand 11 is comprised by twisting several forced wire. More specifically, each outer layer strand 5 has a core wire disposed at the center and a plurality of outer layer wires twisted on the outer periphery of the core wire. The diameter of the outer layer wire is equal to the diameter of the deep wire. The diameter of each core strand 11 is smaller than the diameter of outer layer strand 5. The diameter of the element wire of the core strand 11 is smaller than the diameter of the element wire of the outer layer strand 5. The other configuration is the same as in the first embodiment.
In such an elevator rope, since the core rope 9 is arrange | positioned at the center, the packing density of the forced element wire in the whole rope can be improved further, and breaking strength can be improved.
Embodiment 4.
Next, FIG. 4 is sectional drawing of the elevator rope by Embodiment 4 of this invention. In this Embodiment 4, the core twisted by synthetic fibers is used similarly to Embodiment 2 as the fiber core 13. The outer periphery of the fiber core 13 is covered with the resin core coating 14. As the material of the core coating 14, the same material as the inner layer coating 3 can be used.
The core rope 9 of Embodiment 4 is comprised by the fiber core 13, the core coating body 14, the core strand 11, and the core rope coating body 12. As shown in FIG. The other configuration is the same as that in the third embodiment.
In such an elevator rope, since the core covering 14 is filled in the gap between the ropes constituting the fiber core 13, the filling rate is high, and the deterioration over time can be reduced. The same effect as in the used third embodiment can be obtained.
Embodiment 5:
Next, FIG. 5 is sectional drawing of the cross section of the elevator rope by Embodiment 5 of this invention. In the figure, the fiber core 15 which consists of a core twisted by synthetic fiber is arrange | positioned (without using a core coating body) in the center of the core rope 9 as it is. The other configuration is the same as that of the fourth embodiment.
When the cross-sectional structure of the whole rope is three-layer structure (layer containing core strand 11, layer containing inner layer strand 2, layer containing outer layer strand 5), Embodiments 1 and 2 and Compared with the same two-layer structure, the occupied area of the center portion is small. For this reason, in the three-layer structure, even if the fiber core 15 made of the twisted core is used as it is, there are few gaps generated in each part, and the effect similar to that of the fourth embodiment can be obtained.
Moreover, in Embodiment 5, the number is reduced in order of outer layer strand 5, inner layer strand 2, and core strand 11 (outer layer strand 5> inner layer strand 2> core strand 11). . As for the number of the outer layer strands 5 and the inner layer strands 2, as described in Embodiment 1, the packing density of the forced element wires is further reduced by making the number of the core strands 11 smaller than the number of the inner layer strands 2. Can be raised. Thereby, not only can a wire | wire diameter be made small compared with a conventional rope, but also the number of strands and the number of wires of the whole rope can be suppressed.
In addition, by making the outer layer wire diameter of the core strand 11 smaller than the diameters of the outer layer wires of the other strands 2 and 5, the bending stress generated in the core rope 9 during the bending action can be reduced in comparison with the other layers. have. As a result, the core rope 9 can be prevented from being damaged before other layers, and the occurrence of form collapse of the whole rope due to the damage of the core rope 9 can be prevented.
Embodiment 6:
Next, FIG. 6 is sectional drawing of the elevator rope by Embodiment 6 of this invention. In Embodiments 3 to 5, six core strands 11 having a two-layer structure were used. In Embodiment 6, three core strands 11 are twisted around the outer periphery of the fiber core 10. Each core strand 11 has a three-layer structure in which two strands of strands are bundled on the outer periphery of the center strand. The other configuration is the same as that in the third embodiment.
According to such an elevator rope, the same effect as Embodiment 3 can be acquired, reducing the number of core strands 11.
Here, FIG. 7 is a side view which shows an example of the elevator apparatus to which the elevator rope of Embodiment 1-6 is applied. In the figure, a machine room 22 is provided above the hoistway 21. The machine table 23 is installed in the machine room 22. The hoist 24 is supported on the machine table 23. The hoist 24 has a sheave 25 and a hoist main body 26. The hoist main body 26 has a hoist motor for rotating the sheave 25 and a hoist brake for braking the rotation of the sheave 25.
The deflecting sheave 27 is attached to the machine base 23. The sheave 25 and the deflecting sheave 27 are wound with a plurality of elevator ropes 28 as suspension means.
The car 29 is suspended by one end of the elevator rope 28. That is, the car 29 is suspended in the hoistway 21 by the elevator rope 28 at one side of the sheave 25. At the other end of the elevator rope 28, the counterweight 30 is suspended. That is, the counterweight 30 is suspended by the elevator rope 28 on the other side of the sheave 25.
In the hoistway 21, a pair of car guide rails 31 for guiding the lifting and lowering of the car 29 and a pair of counterweight guide rails 32 for guiding the lifting and lowering of the counterweight 30 are provided. . The car 29 is equipped with an emergency stop device 33 which meshes with the car guide rail 31 to emergency stop the car 29.
In addition, the type of the elevator apparatus to which the elevator rope of this invention is applied is not limited to the type of FIG. For example, the present invention can be applied to an elevator without a machine room, an elevator apparatus of a 2: 1 roping system, an elevator apparatus of a multicar system, a double deck elevator, or the like.
The elevator rope of the present invention can also be applied to ropes other than ropes for hanging the car 29, for example, a compensating rope, a governor rope, or the like.

Claims (12)

  1. An elevator rope having an inner layer rope including a plurality of inner layer strands in which a plurality of steel wires are twisted, and whose outer circumference is covered by a resin outer layer covering. as,
    An elevator rope, characterized in that a fiber core made of synthetic fibers is disposed at the center of the inner layer rope.
  2. The method according to claim 1,
    The fiber core is an elevator rope, characterized in that the round bar core (丸 棒 芯, made of resin).
  3. The method according to claim 1,
    The fiber core is an elevator rope, characterized in that the twisted core made of a resin.
  4. The method according to claim 3,
    An outer circumference of the fiber core is covered with a resin core coating body.
  5. The method according to claim 1,
    An elevator rope characterized in that all of the forced strands including the inner layer strands are twisted with other strands.
  6. The method according to claim 1,
    Elevator rope, characterized in that the number of all the wires is 300 or less.
  7. The method according to claim 1,
    Further provided with a plurality of outer layer strands twisted on the outer periphery of the inner layer rope,
    An elevator rope, wherein said outer layer strand and said outer layer covering are adhered with an adhesive.
  8. The method according to claim 1,
    Further provided with a plurality of outer layer strands twisted on the outer periphery of the inner layer rope,
    The number of the outer layer strands is at least two times the number of the inner layer strands, and the elevator rope, characterized in that 16 or more
  9. The method according to claim 1,
    Further provided with a plurality of outer layer strands twisted on the outer periphery of the inner layer rope,
    The rope diameter of the whole is 20.5 times or more of the outer layer element diameter of the said inner layer strand and said outer layer strand,
    An elevator rope, characterized in that the difference between the maximum element diameter and the minimum element diameter of the outer layer element wire is within 10%.
  10. The method according to claim 1,
    The core rope is disposed at the center of the inner layer rope,
    The core rope has the fiber core disposed at the center, a plurality of core strands twisted outside the fiber core, and a resin core rope coating body coated on the outer circumference of the layer of the core strand. Elevator ropes.
  11. The method of claim 10,
    Further provided with a plurality of outer layer strands twisted on the outer periphery of the inner layer rope,
    An elevator rope, characterized in that the number of said outer layer strands, said inner layer strands, and said core strands are reduced in number.
  12. The method of claim 10,
    Further provided with a plurality of outer layer strands twisted on the outer periphery of the inner layer rope,
    An outer layer wire diameter of the core strand is smaller than an inner layer wire diameter of the inner layer strand and the outer layer strand.
KR1020137013502A 2010-10-27 2010-10-27 Rope for elevator KR20130095779A (en)

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WO (1) WO2012056529A1 (en)

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