JP2023103019A - Tool for undoing strands - Google Patents

Abstract

To provide a tool for undoing strands capable of easing a load of a worker when undoing strands of a wire rope.SOLUTION: A tool 10 for undoing strands includes a cylindrical body 11, a cylindrical body 12, and guides 14. The cylindrical body 12 is supported by the cylindrical body 11 rotatably to the cylindrical body 11. The guides 14 partition a space formed inside the cylindrical body 12 into first spaces S1 for passing strands 22 undone from a rope core 21, and a second space S2 for passing the rope core 21 and strands 22 wound on the rope core 21.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to tools used in unwinding strands of wire rope.

Patent Literature 1 describes a jig used when unwinding a strand of wire rope. The jig described in Patent Literature 1 includes a disk-shaped body having a plurality of holes. The worker passes the strand through the hole and unwinds the strand while rotating the disk-shaped body.

JP 2014-218757 A

When using the jig described in Patent Document 1, the worker unwinds the strand of the wire rope while rotating the disk-shaped body by hand. In order to untie the strand, the operator must repeatedly twist the wrist while exerting force. Therefore, there is a problem that the burden on the operator is large.

The present disclosure has been made to solve the problems described above. An object of the present disclosure is to provide a strand unwinding tool that can reduce the burden on an operator when unstranding a wire rope.

A strand unwinding tool according to the present disclosure includes a first cylindrical body, a second cylindrical body supported by the first cylindrical body so as to be rotatable with respect to the first cylindrical body about the central axis of the first cylindrical body, a space provided in the second cylindrical body and formed inside the second cylindrical body, viewed from a direction along the central axis, a first space for passing the strand unwound from the core of the wire rope, and a second space for passing the core and the strand wound around the core. and a guide for partitioning into.

By using the strand unwinding tool according to the present disclosure, the burden on the operator when unstranding the wire rope can be reduced.

It is a figure which shows the example of an elevator apparatus. Fig. 2 is a side view showing the strand unwinding tool according to Embodiment 1; FIG. 3 is a diagram showing a cross section taken along line AA of FIG. 2; FIG. 4 is a view showing a BB cross section of FIG. 3; It is a figure for demonstrating the usage method of a strand unwinding tool. It is a figure for demonstrating the usage method of a strand unwinding tool. FIG. 2 shows an example of two wire ropes unstranded using an unstranding tool with two guides; FIG. 4 is a diagram showing another example of the strand unwinding tool according to Embodiment 1; FIG. 4 is a diagram showing another example of the strand unwinding tool according to Embodiment 1;

A detailed description is given below with reference to the drawings. Duplicate descriptions are appropriately simplified or omitted. In each figure, the same reference numerals denote the same or corresponding parts.

Embodiment 1.
FIG. 1 is a diagram showing an example of an elevator device. First, referring to FIG. 1, the elevator system will be described. The elevator system comprises a car 1 and a counterweight 2. The car 1 moves up and down in the hoistway 3 . A car 1 and a counterweight 2 are suspended in a hoistway 3 by ropes 4 . The counterweight 2 moves up and down the hoistway 3 in a direction opposite to the direction in which the car 1 moves. FIG. 1 shows an example of a 1:1 roping elevator system.

A rope 4 is wound around a hoist 5 . A hoist 5 drives the car 1 . The control device 6 controls the hoist 5 . That is, movement of the car 1 is controlled by the control device 6 .

The rope 4 is a wire rope. In the elevator system, wire ropes are used in addition to the ropes 4 for suspending the car 1. - 特許庁

In an elevator system, wire ropes are replaced during repair work or the like. When replacing a wire rope in an elevator device, an operator first connects a new wire rope to the wire rope that has been used up to that point. After that, the worker arranges the new wire rope in the same way as the old wire rope was arranged by feeding out the new wire rope while collecting the old wire rope.

In order to replace the wire rope by such a method, the operator must connect the new wire rope to the old wire rope, as described above. In order to connect a new wire rope to an old wire rope, it is necessary to untie the strands of the wire rope. The tools used by the operator to unwind the wire rope strands will be described below.

FIG. 2 is a side view showing the strand unwinding tool 10 according to Embodiment 1. FIG. FIG. 3 is a diagram showing a cross section along line AA of FIG. FIG. 4 is a diagram showing a BB section of FIG. The strand unwinding tool 10 includes a tubular body 11 , a tubular body 12 , rollers 13 and guides 14 .

The cylindrical body 11 is a cylindrical member having a central axis C, for example. Hereinafter, as shown in FIG. 4, the direction along the central axis C is also referred to as the X-axis direction.

The tubular body 12 is a cylindrical member having a diameter smaller than that of the tubular body 11 . 2 to 4 show a preferred example in which the cylindrical body 12 has the same central axis as the central axis C of the cylindrical body 11. FIG. In the examples shown in FIGS. 2 to 4, the length of the tubular body 12 in the X-axis direction is the same as the length of the tubular body 11 in the X-axis direction. Further, the cylindrical body 12 is arranged so that one end face 12 a is flush with one end face 11 a of the cylindrical body 11 . The cylindrical body 12 is arranged in a space formed inside the cylindrical body 11 as a whole.

The roller 13 is arranged between the tubular body 11 and the tubular body 12 . By interposing the rollers 13 , the cylindrical body 12 is supported by the cylindrical body 11 so as to be rotatable about the central axis C with respect to the cylindrical body 11 . In the examples shown in FIGS. 2 to 4, the tubular body 12 is bi-directionally rotatable with respect to the tubular body 11 .

A guide 14 is provided on the tubular body 12 . In the examples shown in FIGS. 2 to 4, the guide 14 is a plate-like member curved in a convex shape. For example, both ends of the guide 14 are fixed to the inner peripheral surface of the tubular body 12, so that the central portion protrudes toward the center axis C side. The length of the guide 14 in the X-axis direction is smaller than the length of the cylindrical body 12 in the X-axis direction. Further, the guide 14 is arranged so that one end surface 14 a is flush with the end surface 12 a of the tubular body 12 . The guide 14 is arranged in a space formed entirely inside the tubular body 12 . FIGS. 2-4 show an example where the unwinding tool 10 comprises three guides 14. FIG.

Next, referring also to FIGS. 5 and 6, a method of unstranding a wire rope using the strand unwinding tool 10 will be described. 5 and 6 are diagrams for explaining how to use the strand unwinding tool 10. FIG. FIG. 5 is a cross-sectional view corresponding to FIG. FIG. 6 is a diagram corresponding to FIG.

In the example shown in FIGS. 5 and 6, the wire rope 20 comprises a core 21 and six strands 22. As shown in FIG. That is, the wire rope 20 is formed by winding six strands 22 around the core rope 21 .

As shown in FIGS. 3 and 5, the guide 14 divides the space formed inside the cylindrical body 12 into a first space S1 and a second space S2 when viewed from the X-axis direction. The first space S1 is a space for passing the strand 22 unwound from the core 21 of the wire rope 20 . The second space S2 is a space for passing the core rope 21 of the wire rope 20 and the strand 22 wound around the core rope 21 . That is, the strand 22 not unwound from the cord 21 passes through the second space S2.

5 and 6 show an example in which three strands 22 out of the strands 22 included in the wire rope 20 are unwound from the core rope 21. FIG. Inside the cylindrical body 12, one guide 14 defines one first space S1. First, as shown in FIG. 5, the operator inserts the tip of the wire rope 20 into the space formed inside the tubular body 12 so that one strand 22 is arranged in each first space S1. The core 21 and the remaining three strands 22 not placed in the first space S1 are placed in the second space S2.

When the wire rope 20 is arranged with respect to the strand unwinding tool 10 as shown in FIG. In the example shown in FIG. 6, the operator moves the strand unwinding tool 10 in the D direction.

A guide 14 is arranged between the core 21 and the strand 22 arranged in the first space S1. Therefore, when the strand unwinding tool 10 moves in the D direction, the guide 14 bites between the core rope 21 and the strand 22, and the strand 22 is peeled off from the core rope 21. - 特許庁

Further, the cylindrical body 12 rotates around the central axis C with respect to the cylindrical body 11 . Therefore, when an operator moves the strand unwinding tool 10 in the direction D, the cylindrical body 12 is guided by the strand 22 arranged in the first space S1 and rotates inside the cylindrical body 11 according to the twist of the strand 22. - 特許庁At this time, the operator does not need to repeatedly perform operations such as twisting the wrist. The operator simply needs to grasp the cylindrical body 12 and move the strand unwinding tool 10 straight in the D direction. Therefore, the burden on the operator when untying the strands 22 of the wire rope 20 can be reduced.

The strand 22 arranged in the second space S2 passes through the second space S2 together with the core rope 21. As shown in FIG. The strands 22 that are not arranged in the first space S1 remain wound around the cord 21 even after passing through the strand unwinding tool 10.例文帳に追加

As described above, the tubular body 12 rotates in both directions with respect to the tubular body 11 . Therefore, when removing the strand unwinding tool 10 from the wire rope 20 , the operator should just move the strand unwinding tool 10 straight in the opposite direction along the wire rope 20 . In the example shown in FIG. 6, the operator can remove the strand unwinding tool 10 from the wire rope 20 by moving the strand unwinding tool 10 in the E direction.

FIGS. 2-6 show an example where the unwinding tool 10 comprises three guides 14. FIG. As another example, the unwinding tool 10 may have only one or two guides 14 . The strand unwinding tool 10 may have four or more guides 14 .

For example, if the wire rope 20 comprises eight strands 22, the operator may use the strand unwinding tool 10 with two guides 14 to unwind the strands 22. In this case, two first spaces S1 are formed inside the tubular body 12 . The operator arranges the two adjacent strands 22 in one first space S1, and arranges the two adjacent strands 22 diagonally opposite to the two strands 22 in the other first space S1.

FIG. 7 shows an example of two wire ropes 20 whose strands 22 are unwound using the strand unwinding tool 10 having two guides 14. FIG. In the description of FIG. 7, in order to distinguish between the two wire ropes 20, one wire rope 20 is denoted by the letter a after the letter, and the other wire rope 20 is denoted by the letter b after the letter.

For example, the wire rope 20a is an old rope 4 with eight strands 22a wrapped around a core 21a. The wire rope 20b is a new rope 4 with eight strands 22b wound around a core 21b.

FIG. 7 shows a state in which the four strands 22a are cut from the root portion after the four strands 22a have been unwound using the strand unwinding tool 10. FIG. Therefore, the core rope 21a is helically exposed at the tip of the wire rope 20a. In addition, FIG. 7 shows a state in which after the four strands 22b are unwound using the strand unwinding tool 10, the core rope 21b and the other four strands 22b are cut, leaving the four strands 22b.

In order to connect the wire rope 20b to the wire rope 20a, first, the end face of the core rope 21b is aligned with the end face of the core rope 21a, and the wire ropes 20a and 20b are arranged in a straight line. After that, the wire ropes 20a and 20b are formed like one wire rope by winding the strand 22b around the portion where the core rope 21a is exposed.

FIG. 8 shows another example of the strand unwinding tool 10 according to the first embodiment. FIG. 8 is a cross-sectional view corresponding to FIG. In the example shown in FIG. 8 , the strand unwinding tool 10 further includes a tubular body 15 in addition to tubular bodies 11 , 12 , rollers 13 and guides 14 .

The tubular body 15 is a cylindrical member having a diameter larger than that of the tubular body 11 . The cylindrical body 15 is provided on the cylindrical body 11 . FIG. 8 shows a preferred example in which the tubular body 15 has the same central axis as the central axis C of the tubular body 11 . In the example shown in FIG. 8, the length L1 of the tubular body 15 in the X-axis direction is greater than the length of the tubular body 11 in the X-axis direction and the length of the tubular body 12 in the X-axis direction. Further, the cylindrical body 15 is arranged so that one end face 15 a is flush with one end face 11 a of the cylindrical body 11 . The cylindrical body 11 is arranged in a space formed inside the cylindrical body 15 as a whole.

The cylindrical body 15 is a member provided to make it easier for the worker to hold the strand unwinding tool 10 . In the example shown in FIG. 8, even if the length of the cylindrical body 11 in the X-axis direction cannot be increased due to reasons such as structural restrictions, it is possible to secure a sufficient grip margin. Moreover, when the strand unwinding tool 10 is provided with the tubular body 15, the guide 14 is desirably arranged at a position close to a plane including the end surface 15a. For example, as shown in FIG. 8, if the end surface 14a is arranged flush with the end surface 15a, the operator can easily pass the strand 22 to be unwound through the first space S1.

FIG. 9 shows another example of the strand unwinding tool 10 according to the first embodiment. FIG. 9 is a cross-sectional view corresponding to FIG. In the example shown in FIG. 9, the tubular body 11 realizes the function of the tubular body 15 shown in FIG. For example, the length L2 of the tubular body 11 in the X-axis direction is greater than the length of the tubular body 12 in the X-axis direction. As long as the length of the cylindrical body 11 in the X-axis direction can be increased, the structure shown in FIG. 9 may be employed without the cylindrical body 15 .

In this embodiment, an example in which the first space S1 is formed by the cylindrical body 12 and the guide 14 has been described. That is, in the example shown in the present embodiment, the strand 22 arranged in the first space S1 is surrounded by a part of the cylindrical body 12 and the guide 14 . As another example, the first space S1 may be formed by the guide 14 only.

This Embodiment demonstrated the example which uses the strand unwinding tool 10 with respect to the wire rope 20 used by the elevator apparatus. It goes without saying that the strand unwinding tool 10 may be used on wire ropes used in equipment other than elevator equipment.

1 Carriage 2 Counterweight 3 Hoistway 4 Rope 5 Winding machine 6 Control device 10 Strand unwinding tool 11 Cylindrical body 11a End face 12 Cylindrical body 12a End face 13 Roller 14 Guide 14a End face 15 Cylindrical body 15a End face 20 Wire rope , 21 cord, 22 strand

Claims (7)

a first tubular body;
a second tubular body supported by the first tubular body so as to be rotatable relative to the first tubular body about the central axis of the first tubular body;
a guide that is provided in the second cylindrical body and divides a space formed inside the second cylindrical body into a first space for passing a strand unwound from a core rope of a wire rope and a second space for passing the core rope and a strand wound around the core rope, when viewed from the direction along the central axis;
a strand unwinding tool. 2. The strand unwinding tool according to claim 1, wherein the guide is a curved plate-like member having both ends fixed to the second cylindrical body. 3. The strand unwinding tool according to claim 1, wherein the entire second cylindrical body is arranged in a space formed inside the first cylindrical body. Further comprising a third tubular body provided in the first tubular body,
The entire first tubular body is arranged in a space formed inside the third tubular body,
The length in the direction along the central axis of the third tubular body is greater than the length in the direction along the central axis of the first tubular body and the length in the direction along the central axis of the second tubular body. The strand unwinding tool according to any one of claims 1 to 3. The strand unwinding tool according to any one of claims 1 to 3, wherein the length of the first tubular body in the direction along the central axis is greater than the length in the direction along the central axis of the second tubular body. The strand unwinding tool according to any one of claims 1 to 5, wherein the length of the second tubular body in the direction along the central axis is greater than the length of the guide in the direction along the central axis. The strand unwinding tool according to any one of claims 1 to 6, wherein the second tubular body is bidirectionally rotatable about the central axis with respect to the first tubular body.

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