WO2004037702A9

WO2004037702A9 - Rope for elevator

Info

Publication number: WO2004037702A9
Application number: PCT/JP2002/011108
Authority: WO
Inventors: Takenobu Honda
Original assignee: Mitsubishi Electric Corp
Priority date: 2002-10-25
Filing date: 2002-10-25
Publication date: 2004-12-02
Also published as: KR100680926B1; JP4292151B2; EP1555233A1; CN1289378C; EP1555233B1; WO2004037702A1; JPWO2004037702A1; EP1555233A4; CN1558865A; KR20040068177A

Abstract

A rope for elevator comprising a belt-like rope body. The rope body comprises a plurality of strands, and a resin coating for integrating the strands. The strand includes a plurality of wires stranded in parallel with each other. The strands are arranged laterally in the cross-section perpendicular to the longitudinal direction of the rope body.

Description

Elebe overnight rope

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pelt-shaped rope for hanging over a car used for overnight.

Background art

Light

For example, Japanese Patent Publication No. 2000-5045041 discloses that a belt-shaped rope is used to make a basket yarn ffl.

And the various layouts of the elevator system with the counterweight suspended

Have been. However, the specific structure of the belt-shaped rope is not sufficiently described, and a belt-shaped rope structure that can secure stable strength and extend the service life is required. DISCLOSURE OF THE INVENTION.

The present invention has been made to solve the above-described problems, and has an object to obtain a rope for an elevator that can secure stable strength and extend the life. .

An opening for an elevator according to the present invention is provided with a belt-shaped rope main body and suspends an elevator cage, and the rope main body has a plurality of strands laid in parallel. It has a plurality of children and a resin coating that covers and integrates the children, and the children are arranged side by side in a section perpendicular to the longitudinal direction of the rope body.

Further, the rope for an elevator in accordance with the present invention includes a belt-shaped rope main body, and suspends a basket of the elevator for an elevator, and the rope main body is made of a resin extending along a longitudinal direction of the rope main body. A plurality of child ref aggregates, including a core material, and a plurality of child materials arranged around the core material and twisted around the core material, and a child 体 complex, and are integrated. And a resin coating. The strands including the strands are arranged side by side in a cross section perpendicular to the longitudinal direction of the rope body. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a cross-sectional view of a rope for an elevator in accordance with Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view of a rope for an elevator in accordance with Embodiment 2 of the present invention, and FIG. FIG. 4 is a cross-sectional view of a rope for an overnight stay according to a third embodiment, and FIG. 4 is a cross-sectional view of a roof for an overnight stay according to a fourth embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1

FIG. 1 is a sectional view of an elevator port according to Embodiment 1 of the present invention. In the figure, a belt-shaped rope main body 1 has seven cords 2 and a resin covering 3 that covers and integrates the cords 2. Each child 2 has a plurality of steel wires 4. The strands 4 are twisted in parallel with each other (refer to JIS G3255.212.2b). In all strands 2, all strands 4 are twisted in parallel. The ties 2 are arranged side by side in a cross section perpendicular to the longitudinal direction of the rope body 1 (FIG. 1). That is, the seven straps 2 are arranged so as to be aligned with each other along the width direction of the rope body 1 (in the horizontal direction in FIG. 1) in a cross section perpendicular to the longitudinal direction of the rope body 1. Have been.

The diameter of the wire 4 is preferably about 1/400 of the diameter of a sheave (not shown) around which the rope body 1 is wound. Thereby, the bending stress by the sheave can be reduced, and the fatigue resistance can be improved. In addition, in order not to make the diameter of the wire 4 extremely small, the cross-section structure of the cable 2 is preferably a Paulington type rather than a seal-type filler type specified in JISG355. It is.

The cover 3 is made of, for example, a thermoplastic ether-based polyurethane resin. At least an outer peripheral portion of each child 2 is provided with an adhesive for integrating the child binding 2 with the covering 3.

5 is applied. That is, the child 2 and the cover 3 are in contact with each other via the adhesive 5. Is being worn. The adhesive 5 may be applied either before or after the stranding of the strands 4.

In such an elevator rope, the children 2 are arranged side by side and covered with a resin covering member 3, so that the movement of the children 繙 ref2 can be prevented, and The generation of friction between the bindings 2 can be prevented, so that stable strength can be ensured and the service life can be extended.

In addition, since the wires 4 constituting each of the strands 2 are twisted in parallel with each other, the wires 4 are in contact with each other and restrain each other. Accordingly, the contact pressure between the strands 4 is small, and internal wear is less likely to occur in the strands 2, whereby stable strength can be ensured and the service life can be prolonged.

Particularly, in the first embodiment, since all the strands 4 in all the bindings 2 are twisted in parallel, uniform strength can be secured over the entire cross section, and the shape stability is excellent.

Further, since the steel wire 4 and the hard polyurethane resin coating 3 are used, and the cable 2 and the coating 3 are bonded to each other via the adhesive 5, sufficient abrasion resistance is secured. In addition to this, the stability of the belt shape and the binding property of the cable 2 can be improved.

Here, if the overall strength of the rope body 1 is reduced and the damage is advanced, the ties 2 are broken in the order of the load load or in the order of the damage. On the other hand, if the number of the children 2 is increased in advance, it becomes difficult to make the load load of each rope 2 uniform, so that an increase in strength in proportion to the number of the children 2 cannot be expected.

Moreover, it is difficult to detect how much the wire 4 inside the covering 3 is damaged by the rope for the elevator integrated with the covering 3. That is, it is conceivable that the replacement time of the rope body 1 cannot be determined until the outer surface of the coating 3 is damaged enough to deform the child 、 2 or at least one of the children reference 2 is completely cut. . On the other hand, the remaining strength of the rope

In order to secure about 80%, it is necessary to use five or more children 2. But,

If the strength of one cable 2 is so low that it breaks, it is expected that the other cables 2 are also damaged and the strength is reduced. Usually, when the JIS exchange standard is reached The residual strength is about 5% lower than the standard value because the standard cutting load has a margin.

From the above, a suitable number of bindings 2 is obtained. That is, if a is the predetermined remaining strength, b is the normal remaining strength under the replacement standard, N is the number of gongs 2 and P is the cutting load of the gusset 2, the equation axPxN = bxP (N-1) holds. . If a = 80% and b = 95%, 0.8XPXN = 0.95P (N-1), and N = 6.3, that is, about 7 lines. Therefore, if at least seven or more children 2 are used, sufficient residual strength can be ensured.

The material of the coating 3 is not limited to the thermoplastic ether-based polyurethane resin, but can be appropriately selected according to the use conditions and the like. However, when used in a high-temperature, high-humidity environment, a hard ether-based polyurethane, which hardly undergoes hydrolytic degradation, is more preferable than an ester-based polyurethane, which easily undergoes hydrolysis. Embodiment 2.

Next, FIG. 2 is a cross-sectional view of an elevator rope for an elevator according to a second embodiment of the present invention. In the figure, a pelt-shaped rope main body 11 has a seven-piece aggregate 12 and a resin-made cover 13 that covers and integrates the child aggregate 12. The binding assemblies 12 are arranged side by side in a cross section perpendicular to the longitudinal direction of the rope body 11. That is, the seven restraint assemblies 12 are arranged in a cross section perpendicular to the longitudinal direction of the rope main body 11 so as to be aligned with each other along the width direction of the mouth-opening main body 11 at intervals. .

Each child 縳 assembly 12 includes a resin core 14 extending along the longitudinal direction of the rope body 11, and three children laid around the core 14 and twisted with the core 14. And 15 respectively. Each child 15 has a plurality of steel strands 16. The strands 16 are twisted in parallel with each other. All strands 16 are twisted in parallel in all strands 15.

In each child aggregate 12, the three ropes 15 are arranged around the core 14 in a triangular cross section. The binding assemblies 12 are arranged such that the cross-sectional arrangement shapes of the bindings 15 are opposite to each other. As the material of the core material 14, for example, a thermoplastic resin such as a polypropylene resin, a polyethylene resin or vinyl, or a high-strength synthetic resin fiber such as an aramide fiber or a polypropylene fiber can be used at a high density.

An adhesive 5 is applied to at least the outer peripheral portion of each of the children 15 to integrate with the covering 13. That is, the terminal 15 and the cover 13 are bonded to each other via the adhesive 5.

In such an elevator rope, the child reference assemblies 12 are arranged side by side, and are covered by the resin covering 13, so that the child reference assemblies 12 move. It is possible to prevent the occurrence of friction between the sub-assemblies 12 and each other, so that stable strength can be ensured and the service life can be extended.

In addition, since the strands 16 constituting each of the wires 515 are twisted in parallel with each other, internal wear is less likely to occur in the wires 515, thereby ensuring stable strength and long life. Can be achieved.

Furthermore, since the core assembly 14 is composed of the core material 14 and the three strands 15, a thinner strand 16 can be used, and the diameter of the sheave to be applied can be reduced. In monkey.

Furthermore, three strands 15 are arranged in a triangular cross-section around the core material 14, and the cross-sections of the sub-aggregate 1 2 are alternately opposite in the cross-section arrangement of the jaggs 15 The rope straps 11 can be arranged with high density, the rope body 11 can be kept small and the strength can be increased, and the applicable sheave width can be reduced. Can be made smaller. Embodiment 3.

Next, FIG. 3 is a cross-sectional view of an elevator rope according to Embodiment 3 of the present invention. In this example, a child 18 including a steel core wire 16 as a strand and six outer peripheral wires 17 as strands arranged around the core wire 16 and twisted in parallel with each other is used. Is used. Other configurations are the same as those of the second embodiment.

In such an elevator rope, since the cross-sectional structure of the strap 18 is simple and stable, it has excellent shape stability against external force. Also, compare the diameter of the outer peripheral wire 17 It can be relatively large, and both flexibility and abrasion resistance can be ensured in a well-balanced manner.

Furthermore, since only one layer of the outer peripheral wire 17 is arranged around the core wire 16, the movement of the outer peripheral wires 17 can be suppressed, and the adhesion stability to the covering 13 can be improved. As a result, the life of the outer peripheral wire 17 can be extended, and the fatigue resistance of the bonded portion to the cover 13 can be improved. Embodiment 4.

Next, FIG. 4 is a cross-sectional view of an rope for an erepeater according to a fourth embodiment of the present invention. In this example, a rubber covering 21 is used. The adhesive is not applied to the terminals 18 and instead, the outer periphery of the core wire 16 and the outer peripheral wire 17 is coated by a Parker treatment such as phosphate coating or zinc plating. 22 is formed. Other configurations are the same as those of the third embodiment.

In such an opening for the elevator, since the coating 22 secures the adhesive strength of the sheath 18 to the coating 21, the adhesive strength is more easily achieved than in the step of applying the adhesive. Can be secured.

In the case where the covering in the first and second embodiments is made of rubber, the coating between the wire and the covering can be formed by forming a coating on the wire in place of the adhesive. Power can be secured.

Claims

The scope of the claims

1. A rope for elevating and suspending a basket of elevating and erecting, equipped with a pelt-shaped rope body,

The rope main body includes a plurality of strands in which a plurality of strands are twisted in parallel, and a resin cover that covers and integrates the strands. Elevator ropes arranged side by side in a cross section perpendicular to the longitudinal direction of the main body.

2. The opening for an elevator according to claim 1, wherein all the strands in all the strands are twisted in parallel.

3. The wire is made of steel, the coating is made of a thermoplastic ether polyurethane resin, and the binding and the coating are bonded to each other via an adhesive. Rope for the evening.

4. The rope according to claim 1, wherein the seven cords are arranged so as to be aligned with each other in a cross section perpendicular to the longitudinal direction of the rope main body at intervals.

5. A rope for the elevating night, which has a belt-shaped rope body and suspends the basket of the elevating night.

The rope body is

A plurality of child sets including a resin core material extending along the longitudinal direction of the rope main body and a plurality of cords arranged around the core material and twisted with the core material Body, and

Having a resin coating that covers and integrates the child binding composite,

The binding includes a plurality of strands twisted in parallel with each other,

The above-mentioned child 繮 aggregate is a rope for an overnight stay arranged side by side in a cross section perpendicular to the longitudinal direction of the above-mentioned rope main body.

6. The rope according to claim 5, wherein the core material is made of polyethylene resin.

7. The elevator rope according to claim 5, wherein the core material is made of a synthetic resin fiber.

8. Each of the child aggregates has one core material and three child restraints arranged in a triangular cross section around the core material.

6. The rope for an elevator according to claim 5, wherein the sub-sets are arranged so that the cross-sectional arrangement shapes of the sub-sets are alternately reversed.

9. The elevator according to claim 5, wherein each of the wires includes a steel core wire as the element wire and six outer peripheral wires as the element wires arranged around the core wire. Evening rope.

10. The rope according to claim 5, wherein the coating is made of rubber, and a coating is formed on an outer peripheral portion of the strand by a Parker treatment. /