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Riata for elevator

A rope and elevator technology, used in textile cables, textiles and papermaking, elevators, etc., can solve the problems of sheave wear, increased wire hardness, shortened rope life, etc., to prolong life, prevent bending stress from increasing, and reduce diameter small effect

Active Publication Date: 2009-04-22
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the rope wears out at an early stage and the life of the rope is shortened
[0005] In addition, if the diameter of the sheave is increased in order to extend the life of the rope, the overall size of the elevator system will increase.
[0006] In addition, if the strength of the rope is increased in order to achieve a longer life of the rope, the hardness of the wire will increase, and the sheave will wear out earlier

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0017] figure 1 It is a sectional view showing the elevator rope according to Embodiment 1 of the present invention. also, figure 2 will be figure 1 A schematic side view of the elevator in , with a section of the rope cut away. In the drawing, an elevator rope 1 has a core rope 2 and twelve outer layer strands 3 provided on the outer periphery of the core rope 2 .

[0018] The core rope 2 has: a core rope 4; a resin-made inner layer covering body 5 covering the outer periphery of the core rope 4; six inner layer strands 6 provided on the outer peripheral portion of the inner layer covering body 5; And the outer layer covering body 7, which uniformly covers the core rope 4, the inner layer covering body 5 and each inner layer sub-rope 6.

[0019] The core rope 4 is arranged at the center of the core rope 2 . Further, in the core rope 4 , there are provided a core rope center portion, a first wire layer surrounding the outer periphery of the core rope center portion, and ...

Embodiment approach 2

[0053] Figure 4 It is a cross-sectional view showing an elevator rope according to Embodiment 2 of the present invention. In the figure, when the core rope 4 is compressed from the outer periphery, the cross-sectional shape of the wires 8 to 10 of the core rope 4 is distorted. In addition, when the inner layer strands 6 are compressed from the outer periphery, the cross-sectional shapes of the wires 11 to 13 of the inner layer strands 6 are distorted. In addition, when the outer layer strand 3 is compressed from the outer periphery, the cross-sectional shape of the wires 14 to 16 of the outer layer strand 3 is distorted. That is, by compressing the core rope 4 , the inner layer strand 6 , and the outer layer strand 3 from the outer periphery, the shapes of the cross-sections of the respective wires of the core rope 4 , the inner layer strand 6 , and the outer layer strand 3 are distorted. Other structures are the same as those in Embodiment 1.

[0054] In such an elevator ...

Embodiment approach 3

[0056] Figure 5 It is a cross-sectional view showing an elevator rope according to Embodiment 3 of the present invention. In the figure, when the core rope 4 is compressed from the outer periphery, the cross-sectional shape of the wires 8 to 10 of the core rope 4 is distorted. In addition, when the inner layer strands 6 are compressed from the outer periphery, the cross-sectional shapes of the wires 11 to 13 of the inner layer strands 6 are distorted.

[0057] The cross-sectional shape of the wires 14 to 16 of the outer layer strand 3 is not distorted, but has the same cross-sectional shape as that of the wires 14 to 16 in Embodiment 1 (that is, substantially circular). Thus, the gap between the wires 14 to 16 of the outer layer strand 3 becomes larger than the gap between the wires 8 to 10 of the core rope 4 and the gap between the wires 11 to 13 of the inner layer strand 6 . .

[0058] That is, by only compressing the core rope 4 and the inner layer rope 6 among the core...

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PUM

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Abstract

An elevator rope having a core rope and twelve outer-layer strands, these strands laid at intervals on the outer circumference of the core rope. The core rope has a core strand, an inner-layer coating covering the outer circumference of the core strand, six inner-layer strands laid at intervals on the outer circumference of the inner-layer coating and an outer-layer coating collectively covering the core strand, inner-layer coating and individual inner-layer strands. Each of the core strand, individual inner-layer strands and individual outer-layer strands is composed of multiple wires twisted together.

Description

technical field [0001] The present invention relates to elevator ropes used as ropes for suspending, for example, a car. Background technique [0002] Conventionally, in order to improve the tensile strength, a steel wire rope in which an elastic material is filled between the core and six side strands twisted around the core has been proposed. The rope core and the side strands are respectively formed by twisting a plurality of wires. The cross-sectional area of ​​each wire rod of the side strands is larger than that of each wire rod of the rope core. The inside of the cord is also filled with an elastic material (see Patent Document 1). [0003] Patent Document 1: Japanese Patent No. 2992783 [0004] When such a conventional steel wire rope is used as a rope for suspending, for example, a car in an elevator apparatus, a plurality of ropes are wound around a sheave. In such a case, since the number of side strands of each rope is only a few six, the contact area between...

Claims

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Application Information

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IPC IPC(8): D07B1/06B66B7/06
CPCD07B2501/2007D07B1/0673D07B2201/2073B66B7/06D07B2201/1036D07B2201/2074D07B1/165D07B2201/2065D07B1/08D07B1/10D07B1/12
Inventor 光井厚肥田政彦本田武信
Owner MITSUBISHI ELECTRIC CORP
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