JP2002060162A - Rope for main rope of rope type elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a main rope for use in a rope type elevator, which is lightweight and high in strength and can obtain a large coefficient of friction with a sheave. SOLUTION: A main rope 1 is formed by twisting a plurality of strands 111 to 116 so as to surround a cord 12, and the strands 111 to 116 are made of a polymer fiber such as aramid fiber. It is composed of strands. Since the strands 111 to 116 are made of strands made of polymer fibers, they are lightweight and high-strength, and have a sheave 4a.
Large friction coefficient is obtained between the
It can also be used for elevators in high-rise buildings that exceed

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a rope for a main rope of a rope type elevator.

[0002]

2. Description of the Related Art Generally, in a rope type elevator, FIG.
As shown in FIG.
a while being wound around the sheave 4b and connected between the car 2 and the counterweight 3 so that the car 2 moves up and down with a frictional force between the main rope 1 and the sheave 4a. It is configured.

The main rope 1 has a plurality of (six in the figure) strands 11 as shown in FIG.
1 to 116 are twisted so as to surround the carbon steel cord 12, and each of the strands 111 to 116 is constituted by a metal wire strand 11A formed by twisting a large number of thin wires made of carbon steel. Have been.

Conventionally, ropes that can be used as main ropes for elevators have been defined in JlSG3524 (wire rope), and there are four types (types) of E type, G type, A type, and B type.
Among them, the E-type and A-type wire ropes shown in Table 1 below are actually widely used.

[0005]

[Table 1] Further, the safety factor of a wire rope used in an elevator is determined by the Building Standards Law, and a safety factor of 10 or more is required from the viewpoint of ensuring safety and the like.

[0006]

As described above, a conventional wire rope for an elevator main rope is composed of only a so-called metal wire made of carbon steel, and has a large mass. In elevators such as high-rise buildings, the ratio of the weight of the rope itself to the total weight including the weight of the car has increased. As a result, the elevating stroke is 800m
At this height, the rope can only support its own weight, and in consideration of the car's own weight and the load, the ascent and descent of the wire rope that can be actually used was limited to about 600 m.

Further, since the conventional wire rope has a relatively small friction coefficient with the sheave, the winding angle of the sheave may be increased as much as possible, or the winding groove of the sheave may be formed in order to obtain a necessary frictional force. Measures were taken to change the shape and obtain the largest possible coefficient of friction.

[0008] However, when an attempt is made to obtain a large friction coefficient between the sheave and the wire rope, the rope is often damaged by the special shape of the sheave, which causes an increase in car vibration and the like. So an improvement was requested.

Therefore, the present invention provides a lightweight, high-strength, high coefficient of friction with the sheave, and a vertical stroke of 600 m.
It is an object of the present invention to provide a main rope that can be applied to the above elevators.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems.
In a main rope for a rope-type elevator in which a plurality of strands are wound around a sheave of a driving device and are twisted so as to surround a core rope, at least one of the plurality of strands is a strand. Is characterized by comprising a strand made of a polymer fiber, wherein the cord is constituted by at least a metal wire.

[0011] The invention of claim 2 is the same as claim 1 of the present invention.
In the rope for the main rope of the rope type elevator described, the polymer fiber includes at least one of aramid fiber, polyethylene fiber, polyvinyl alcohol fiber, polyester fiber, polyarylate fiber, and heterocyclic-containing aromatic fiber. , The metal wire includes one of hard steel wire, oil-tempered wire, PC hard steel wire, galvanized steel wire, piano wire, stainless steel wire, titanium wire, and titanium alloy wire. I do.

Thus, the invention according to claim 1 or 2 is configured such that the rope for the main rope of the elevator is formed by the element wire made of the polymer fiber and the metal wire.

Accordingly, the tensile strength of the rope can be reduced by using a polymer fiber such as any of aramid fiber, polyethylene fiber, polyvinyl alcohol fiber, polyester fiber, polyarylate fiber and heterocyclic-containing aromatic fiber. 1320N / over class E wire rope
mm2, elastic modulus is at least 1/3 of carbon steel 7
0 kN / mm @ 2 and a large friction coefficient with the sheave.

The metal wire may be a hard steel wire, an oil-tempered wire, a PC hard steel wire, a galvanized steel twisted wire, a piano wire, a stainless steel wire, or other ferrous metal material, or a titanium wire, a titanium alloy wire, or the like. By using any of the non-ferrous metal materials, the tensile strength of the rope is 1320 N / m
m2 or more and a combination structure with a strand containing a polymer fiber can provide a lightweight and high-strength rope for a main rope of an elevator.

According to a third aspect of the present invention, in the rope for a main rope of a rope type elevator according to the first or second aspect, each of the plurality of strands is formed by twisting a strand of a polymer fiber. The core net is characterized by a twisted configuration of a metal wire or a twisted configuration of a strand made of a polymer fiber and a metal wire.

According to a fourth aspect of the present invention, in the rope for a main rope of a rope type elevator according to the first or second aspect, the plurality of strands are made of a polymer having a twist structure of only a strand made of a polymer fiber. The fiber strands and the metal wire strands formed by twisting only the metal wires are alternately arranged and twisted to the cord.

According to a fifth aspect of the present invention, in the rope for a main rope of a rope type elevator according to the first or second aspect, the strand is formed of a stranded wire made of a metal wire on the outside and a polymer fiber on the inside. The stranded wires of the element wires are composed of composite strands arranged and configured respectively.

According to a sixth aspect of the present invention, in the rope for a main rope of a rope type elevator according to the first or second aspect, the strand has a stranded wire of a polymer fiber on the outside and a stranded wire on the inside. The stranded wire made of a metal wire is composed of a composite strand arranged and configured.

According to a seventh aspect of the present invention, in the rope for a main rope of a rope type elevator according to the first or second aspect, the strand has a strand made of a polymer fiber and a metal wire on the outside. Twisted wires are alternately arranged, and the inside is composed of a composite strand in which strands of element wires made of polymer fibers are arranged and configured.

According to an eighth aspect of the present invention, there is provided the rope for a main rope of a rope type elevator according to the first or second aspect, wherein the strands on both the outer and inner sides are made of a stranded wire made of a polymer fiber and a metal. It is characterized by comprising a composite strand in which stranded wires are alternately arranged.

According to a ninth aspect of the present invention, in the rope for a main rope of a rope type elevator according to the first or second aspect, the plurality of strands are made of a stranded wire made of a polymer fiber and a metal wire. It is characterized in that composite strands in which stranded wires are alternately arranged and polymer fiber strands in which only strands made of polymer fibers are twisted are arranged alternately.

According to a tenth aspect of the present invention, in the rope for a main rope of the rope type elevator according to the fourth aspect, the plurality of strands are formed of a stranded wire of a polymer fiber and a stranded wire of a metal wire. It is characterized in that composite strands arranged alternately and metal wire strands composed of a twisted configuration of only metal wires are arranged alternately.

According to an eleventh aspect of the present invention, in the main rope for a rope type elevator according to any one of the first to tenth aspects, the outer peripheral surface is covered with a covering member made of a polymer fiber. It is characterized by having.

[0024] According to a twelfth aspect of the present invention, in the rope for a main rope of a rope type elevator according to any one of the first to eleventh aspects, a total cross-sectional area of a strand made of a polymer fiber; The ratio of the ratio to the total cross-sectional area of the metal wire is such that the axial load rigidity (the product of the elastic modulus and the cross-sectional area) is substantially equal.

As described above, in any of the third to twelfth aspects of the present invention, the rope is composed of the polymer fiber and the metal wire, and therefore, as in the first and second aspects of the present invention, the rope is lightweight and has high strength. Therefore, it is possible to obtain a large frictional resistance with the sheave, and to provide a main rope for a high-rise elevator.

[0026]

1 to 9 show an embodiment of an elevator main rope according to the present invention.
This will be described in detail with reference to FIG. The same components as those of the conventional configuration shown in FIGS. 10 and 11 are denoted by the same reference numerals, and detailed description is omitted.

FIG. 1A is a perspective view showing a first embodiment of an elevator main rope according to the present invention, and FIG.
(B) is a cross-sectional view thereof.

That is, the rope 1 for main ropes comprises the six strands 111 to 116 composed of so-called polymer fiber strands 11B, each of which has a twisted configuration of only element wires made of polymer fibers. Polymer fiber strand 1
1B (111 to 116) is twisted to the core rope 12 formed of a twisted configuration of a metal wire. In addition, aramid fiber is used for the polymer fiber, and hard steel wire is used for the metal wire. As the aramid fiber, for example, a fiber commercially available under the name of Kevlar 129 (trade name) or Technora (trade name) is known. Table 2 shows various characteristics of the aramid fiber and the carbon steel. The aramid fiber is 1,320 N / mm ² of the class E wire rope.
The tensile modulus of Technora (trade name) is 70 kN / mm ^{2 which} is about 1/3 that of carbon steel.
The aramid fiber has a characteristic that the degree of elongation exceeds 2% and the aramid fiber is different from other glass fibers and carbon fibers in that it is strongly broken by bending or the like and hardly broken.

[0029]

[Table 2] Further, the aramid fiber has a tensile strength of 1.7 to 1.8 times as high as that of carbon steel and a density of 1 / 5.5 to 1 /
5.7, the coefficient of friction is 1.4 times, and the adoption of aramid fiber has a light weight, high strength and a high coefficient of friction.

In addition to the aramid fibers having the trade names shown in Table 2, those having the trade names shown in Table 3 are generally commercially available. Polymer fibers having properties equivalent to those of aramid fibers include polyethylene fibers and polyvinyl alcohol fibers shown in Table 4, polyester fibers and polyarylate fibers shown in Table 5, and heterocyclic-containing aromatics shown in Table 6. There is a fiber, and a strand having the same performance as that of the polymer fiber strand 11B employing the aramid fiber can be obtained by constituting one of these fibers or a combination of arbitrary plural types.

[0031]

[Table 3]

[Table 4]

[Table 5]

[Table 6] Further, in this embodiment, the core cord 12 is formed by twisting a metal wire (element wire). However, the metal wire may be a hard steel wire, a carbon steel wire or a non-ferrous metal wire, that is, an oil wire. Bar wire, PC hard steel wire, galvanized steel stranded wire, piano wire,
Stainless steel wires, titanium wires, and titanium alloy wires can be employed, and these have characteristics exceeding the tensile strength of conventional E-class wire ropes of 1320 N / mm2.

Since the density of the titanium wire and the titanium alloy wire is about 1 / 1.74 of that of carbon steel, these wires are
2 to further reduce the weight.

Further, in this embodiment, the polymer fiber and the metal wire having different elastic moduli are used at the same time. Can be.

That is, for example, the rigidity of the main rope 1 against tension in the axial direction (rigidity k = EA / l, where
E: elastic modulus, A: cross-sectional area, l: length) are set so that the element wire made of the polymer fiber and the metal wire are almost equal.

In the case of materials having different elastic moduli, such as a combination of a strand made of a polymer fiber and a metal wire, the total cross-sectional area ratio is determined from the ratio of the respective elastic moduli to obtain substantially the same rigidity. Can be.

For example, if a combination of materials having the same elastic modulus is used for the element wire made of polymer fiber and the metal wire,
By setting the total cross-sectional area ratio to 1 and the total cross-sectional area ratio to 1: 2 when the elastic modulus is 2: 1, it is possible to obtain a balance with respect to the tensile rigidity or the load applied to the rope as a whole. .

As described above, in the rope 1 for the main rope, the outer strands 111 to 116 are made of a polymer fiber having a friction coefficient of 1.4 times as large as that of a metal wire. Is in contact with the sheave 4a, so that a large frictional resistance can be obtained, and it is not necessary to process the sheave 4a into a special shape as in the prior art, and wear and damage of the main rope 1 can be reduced. The ride comfort and the weight of the car and the counterweight itself can be reduced.

It should be noted that, in the above configuration, the polymer fiber strand itself is different from the metal wire in that it has a property of being thermally decomposable and hard to be twisted due to plastic deformation, but a polymer fiber strand. 11B (111 to 116) are twisted around the core rope 12 made of a metal wire.
Without fraying, the rope can maintain the characteristics of light weight, high strength and high coefficient of friction.

In the first embodiment, the number of strands has been described as being six. However, the number of strands is not limited to six, and may be constituted by eight strands or any other plural number. It goes without saying that you can do it.

As described above, the rope for the main rope of the rope type elevator according to the present invention realizes light weight, high strength and a high friction coefficient by incorporating a strand made of a polymer fiber into a strand. However, the same function and performance can be achieved by appropriately changing the arrangement of the strands made of polymer fibers incorporated into the strand.

Therefore, the second to twelfth structures configured to obtain the same effects as those of the first embodiment can be obtained.
The rope for main rope according to each of the embodiments will be described below.
In each of the following embodiments, the number of strands is the first.
As in the first embodiment, the description is made on the assumption that the polymer fiber employs an aramid fiber and the metal wire employs a hard steel wire, but has the same function and performance as the first embodiment. Other polymer fibers and metal wires can be employed.

FIG. 2 shows a second embodiment of the main rope according to the present invention.
In the cross-sectional view showing the embodiment, strands 111 to 1
16 is a polymer fiber strand 11B (111, 113, 115) composed of a twisted configuration of only polymer fiber strands,
Metal wire strand 11A consisting of twisted metal wire only
(112, 114, 116) are alternately arranged, and the strands 11A and 11B are twisted around the core rope 12 made of a metal wire.

Since the metal wire strand 11A can obtain a strong twisting force by plastic deformation in the rope manufacturing process, the torsional rigidity of the rope can be increased, and the rope can be prevented from being frayed. .

Further, according to this embodiment, the strands 111 to 116 have the polymer fiber strands 11B and the metal wire strands 11A alternately arranged, so that the friction between the main rope 1 and the sheave 4a is increased. As for the coefficient, a higher friction coefficient can be obtained as compared with a conventional rope composed of only a metal wire strand, and the polymer fiber strand 1
1B and the metal wire strands 11A are arranged alternately with symmetry, so that the sheave 4a and the strands 111 to 1 1
16, a uniform frictional resistance is obtained, and the car travels stably.

FIG. 3 (a) is a cross-sectional view showing a third embodiment of a main rope according to the present invention.
11 to 116, as shown in FIG.
In the center, a polymer fiber stranded wire 11CS1 composed of a strand of polymer fiber is arranged, around which nine same polymer fiber stranded wires 11CS2 are arranged, and furthermore, nine metal stranded wires 11CM are arranged outside. It was constituted by composite strand 11C which was twisted. As described above, in the third embodiment, each of the strands 111 to 116 is a composite strand in which the stranded wire 11CM made of a metal wire is arranged on the outside and the polymer fiber stranded wires 11CS1 and 11CS2 are arranged on the inside. 11C, it is possible to provide a lightweight and high-strength rope 1 for a main rope, and since the composite strand 11C is formed by being twisted to a core rope 12 made of a metal wire, the main rope without fraying is provided. Rope 1 can be realized.

FIG. 4A is a cross-sectional view showing a fourth embodiment of a main rope according to the present invention.
As shown in FIG. 4 (b), each of the 1 to 116 has a stranded wire 11DM1 made of a metal wire at the center, and 10 stranded wires 11DM2 made of the same metal wire around the center.
Further, it is composed of a composite strand 11D in which ten polymer fiber stranded wires 11DS are arranged outside.

As described above, in the fourth embodiment,
Each strand 111 to 116 has a polymer fiber stranded wire 11DS on the outside and a stranded wire 11 made of a metal wire on the inside.
Since the DM1 and the 11DM2 are each composed of the composite strand 11D arranged and configured, a lightweight, high-strength, non-fraying main rope 1 can be realized, and the sheave 4a and the strand 1D are formed by the outer polymer fiber stranded wire 11DS.
1, a large coefficient of friction is obtained, and stable car running can be realized.

FIG. 5A is a cross-sectional view showing a fifth embodiment of the main rope according to the present invention.
11 to 116, as shown in FIG.
A polymer fiber stranded wire 11ES1 is arranged in the center, and ten same polymer fiber stranded wires 11ES2 are arranged around the center.
Further, on the outside thereof, a composite strand 11E is formed by alternately arranging and twisting stranded wires 11EM made of polymer fiber stranded wires 11ES and metal wires.

As described above, according to the fifth embodiment, the polymer fiber stranded wires 11ES and the metal stranded wires 11EM are alternately arranged on the outside, so that they are lightweight and have high strength and high strength. There is no fraying, and a stable car traveling can be realized by a large friction coefficient between the sheave 4a and the strands 111 to 116.

FIG. 6A is a cross-sectional view showing a sixth embodiment of the main rope according to the present invention.
11 to 116, as shown in FIG.
A stranded wire 11FM1 made of a metal wire is arranged in the center,
Around the periphery thereof, a stranded polymer fiber 11FS2 and a stranded wire 11FM2 made of a metal wire are alternately arranged, and further outside the stranded wire 11FS2 made of a polymer fiber stranded wire 11FS and a metal wire.
1FM was alternately arranged and twisted to obtain a composite strand 11F.

As described above, in the sixth embodiment,
The polymer fiber stranded wires 11FS and the stranded wires 11FM made of metal wires are alternately arranged on the outside, so that the sheaves 4a and the strands 11 are lightweight and high-strength without fraying.
It is possible to provide the main rope 1 that has a large friction coefficient between the main ropes 1 and 116 and enables stable car running.

FIG. 7 shows a seventh embodiment of the main rope according to the present invention.
In the cross-sectional view showing the embodiment, strands 111 to 1
16 is the polymer fiber strand 1 shown in FIGS.
1B (111, 113, 115) and composite strand 1
1G (112, 114, 116) are alternately arranged to form a stranded structure. The composite strand G is composed of the composite strands 11C, 11D, 11 shown in FIGS.
E or 11F.

As described above, each of the strands 111 to 116
Are composite strands 11G (112, 11) formed by a combination of a polymer fiber stranded wire and a metal wire stranded wire.
4,116) and the polymer fiber strand 11B (11
1,113,115) are arranged alternately.
Lightweight, high strength, no fraying, and a large coefficient of friction between the sheave 4a and the strands 111 to 116 can be obtained.

FIG. 8 shows an eighth embodiment of the main rope according to the present invention.
In the cross-sectional view showing the embodiment, strands 111 to 1
16 is a metal wire strand 11A (112, 114, 1).
16) and one of the composite strands 11G (111, 113, 11) of the composite strands 11C, 11D, 11E, and 11F shown in FIGS.
And 5) are arranged alternately.

As described above, the plurality of strands 111 to 111
Reference numeral 116 denotes a composite strand 11G in which a polymer fiber stranded wire and a metal wire stranded wire are arranged, and a metal wire strand 11A.
Are arranged alternately, so that they are lightweight and high-strength without fraying.
6, a stable car running can be realized by a large friction coefficient.

FIG. 9A is a perspective view showing a ninth embodiment of a main rope according to the present invention, and FIG. 9B is a cross-sectional view. As shown in FIGS. 9A and 9B, the six (plural) strands 111 to 116 are made of metal wire strands 11A (112, 114, 116) and polymer fiber strands 11B (111, 113, 115). And are alternately arranged.

At the same time, the outer peripheral surface is covered with a protective film 13 made of a polymer fiber so as to further prevent fraying of the rope.

As described above, the plurality of strands 111 to 111
116 is a metal wire strand 11A (112, 114,
116) and the polymer fiber strand 11B (111, 11).
3,115) are alternately arranged, so that the sheave 4a and the strand 11 are lightweight and high-strength without fraying.
Between 1 and 116, a protective film 13 made of a polymer fiber
Can provide the main rope 1 that provides a large coefficient of friction and realizes stable car running.

The protective film 13 is formed by knitting a strand made of a polymer fiber, and a large friction coefficient is obtained by contact between the sheave 4a and the protective film 13 made of a polymer fiber. The coating 13 is formed of the first to eighth coatings.
The structure can be applied to the strands 111 to 116 in each of the above embodiments to secure a necessary coefficient of friction with the sheave 4a.

In each of the embodiments described above, a conventional main rope composed of only a metal wire and a main rope incorporated with a strand made of a polymer fiber according to the present invention are compared with each other. Table 7 below shows the results of calculating the weight ratio of the rope for main ropes according to the present invention assuming that the rope for main ropes composed of only metal wires was 1 from the ratio and the density.

Table 7 shows the types of the main ropes of the present invention for three types (A, B, and C) having different elastic moduli. That is, the elastic modulus of the polymer fiber is compared with the elastic modulus of the metal wire, and (A) is equal to the metal wire,
2 is compared as (B), and 1/3 of the metal wire is compared as (C). In addition, the density of each of the polymer fibers was 1.4 for the metal wire.
So that the generated stress is equivalent to that of the metal wire, that is, the total cross-sectional area is the same if the elasticity is the same.
Therefore, if the elastic modulus is 1: 2, the total sectional area is 2: 1, 1: 1:
If it is 3, it is shown that the total cross-sectional area is configured to be 3: 1.

[0062]

[Table 7] As described above, the rope for the main rope of the rope-type elevator according to the present invention has a heat resistance and high rigidity because the strand including at least the polymer fiber is twisted around the core rope composed of the metal wire. By realizing a high coefficient of friction between the sheave and the weight while maintaining the above, it is possible to realize, for the first time, adoption in an elevator having a long ascending and descending stroke in a high-rise building or the like, and a great effect can be obtained in practical use.

It should be noted that the rope type elevator referred to in the present invention includes an indirect type hydraulic elevator as well as a lift-type elevator and a winding drum type elevator. In short, the elevator and the elevator have a rope as an element in a part thereof. Everything is included.

[0064]

As described above, according to the first aspect of the present invention, a rope type elevator having a lifting stroke of 600 m or more can be realized by providing a main rope which is lightweight, high-strength and has high elasticity. be able to.

Also, in each of the inventions according to the second to twelfth aspects, similarly to the effect of the invention according to the first aspect, the realization of the main rope having the characteristics of light weight and high strength enables the high rise building to be constructed. Can be used in elevators.

[Brief description of the drawings]

FIG. 1 is a perspective view and a cross-sectional view showing a first embodiment of a rope for a main rope of a rope type elevator according to the present invention.

FIG. 2 is a cross sectional view showing a rope rope elevator main rope rope according to a second embodiment of the present invention.

FIG. 3 is a transverse sectional view showing a third embodiment of a rope for a main rope of a rope type elevator according to the present invention.

FIG. 4 is a cross-sectional view showing a fourth embodiment of a rope for a main rope of a rope type elevator according to the present invention.

FIG. 5 is a cross-sectional view showing a fifth embodiment of a rope for a main rope of a rope type elevator according to the present invention.

FIG. 6 is a cross sectional view showing a sixth embodiment of a rope for a main rope of a rope type elevator according to the present invention.

FIG. 7 is a cross-sectional view showing a rope rope elevator main rope rope according to a seventh embodiment of the present invention.

FIG. 8 is a transverse sectional view showing an eighth embodiment of a rope for a main rope of a rope type elevator according to the present invention.

FIG. 9 is a perspective view and a cross-sectional view showing a ninth embodiment of a rope for a main rope of a rope type elevator according to the present invention.

FIG. 10 is a conceptual diagram showing a schematic configuration of a rope type elevator.

FIG. 11 is a cross-sectional view of the main rope rope shown in FIG.

[Explanation of symbols]

Reference Signs List 1 rope for main rope 111-116 strand 11A metal wire strand 11B polymer fiber strand 11C, 11D, 11E, 11F, 11G composite strand 11CM, 11DM1, 11DM2, 11EM, 11F
M, 11FM1, 11FM2 Stranded wire made of metal wire 11CS1, 11CS2, 11DS, 11ES, 11E
S1, 11ES2, 11FS, 11FS2 Polymer fiber stranded wire 12 Core cord 13 Coating

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hidetaka Hara 6-27 Kita Shinagawa, Shinagawa-ku, Tokyo Toshiba Elevator Co., Ltd. (72) Inventor Akira Nagata 1 Toshiba-cho, Fuchu-shi, Tokyo (72) Inventor Masakatsu Okamoto 1F Toshiba-cho, Fuchu-shi, Tokyo 3F153 AA14 AA32 AA45 AA50 CC13 CC18 CC21 CC23 CC52 CC53 FF04 GG01 GG40 3F305 BB02 BB14

Claims (12)

[Claims] 1. A rope for a main rope of a rope-type elevator which is wound around a sheave of a driving device and is twisted so that a plurality of strands surround a cord, wherein at least one of the plurality of strands is provided. Or 1
The main strand rope of the rope-type elevator, wherein the strand is made of a strand made of a polymer fiber, and the core cord is made of at least a metal wire. 2. The polymer fiber comprises at least aramid fiber, polyethylene fiber, polyvinyl alcohol fiber,
Polyester fiber, polyarylate fiber, including any one of heterocycle-containing aromatic fiber, the metal wire, hard steel wire, oil-tempered wire, PC hard steel wire, galvanized steel wire, piano wire, 2. The rope according to claim 1, wherein the rope includes a stainless steel wire, a titanium wire, or a titanium alloy wire. 3. The plurality of strands each have a twisted structure of a strand made of the polymer fiber, and the core net has a twisted configuration of the metal wire or a strand made of the polymer fiber. The rope for a main rope of a rope type elevator according to claim 1 or 2, wherein the rope is a twisted configuration with the metal wire. 4. The plurality of strands are arranged such that a polymer fiber strand having a twisted configuration of only the element wires made of the polymer fiber and a metal wire strand having a twisted configuration of only the metal wire are alternately arranged, The main rope of a rope type elevator according to claim 1 or 2, wherein the rope is configured to be twisted around the core rope. 5. The strand is composed of a composite strand in which a stranded wire made of the metal wire is arranged on the outside and a stranded wire of a strand made of the polymer fiber is arranged on the inside, respectively. The rope for a main rope of a rope type elevator according to claim 1 or 2. 6. The strand is composed of a composite strand in which a stranded wire of the strand made of the polymer fiber is arranged on the outside and a stranded wire of the metal wire is arranged on the inside. The rope for a main rope of a rope type elevator according to claim 1 or 2. 7. The strand, in which strands of strands of the polymer fiber and strands of the metal wire are alternately arranged on the outside, and strands of the strands of the polymer fiber on the inside are arranged alternately. The main rope of a rope type elevator according to claim 1 or 2, wherein the wire comprises a composite strand arranged and configured. 8. The strand according to claim 1, wherein both the outer and inner strands are composed of composite strands in which strands of strands of the polymer fibers and strands of the metal wires are alternately arranged. The rope for a main rope of a rope type elevator according to claim 1 or 2. 9. The composite strand, in which the plurality of strands are formed by alternately arranging a stranded wire of the polymer fiber and a stranded wire of the metal wire, and a strand made of the polymer fiber The main rope of a rope type elevator according to claim 1 or 2, wherein polymer fiber strands having only a twist configuration are arranged alternately. 10. The multiple strands are composed of a composite strand in which strands of strands of the polymer fibers and strands of the metal wires are alternately arranged, and a metal having a twist configuration of only the metal wires. The main rope of a rope type elevator according to claim 1 or 2, wherein the wire strands are alternately arranged. 11. The rope for a main rope of a rope type elevator according to claim 1, wherein an outer peripheral surface is coated with a coating member made of the polymer fiber. . 12. A structure in which the ratio of the total cross-sectional area of the strand made of the polymer fiber to the total cross-sectional area of the metal wire is such that axial load stiffness (the product of elastic modulus and cross-sectional area) is substantially equal. The rope according to any one of claims 1 to 11, wherein the rope is a main rope of a rope type elevator.