JP3412367B2 - Elevator control cable device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for suspending a control cable provided between an elevator car and a building.

[0002]

2. Description of the Related Art In an elevator, a control cable is suspended between a car and a building for power transmission and signal transmission, which is disclosed in JP-A-5-298937 or JP-A-4.
It is disclosed in Japanese Patent Publication No. 243787. Generally, the length of the control cable is set to be a little longer than half of the above-mentioned elevator stroke of the car. One end is attached to the car side (moving side) and the other end is attached to the building side (fixed side). There is.

FIG. 5 shows the general construction of a general elevator, and FIGS. 6 and 7 show an apparatus for suspending a control cable at the end of a conventional elevator control cable.
In the figure, a control cable 9 is suspended between a car and a building, a car 16 is suspended at one end of a main rope 15 wound around a hoisting machine 14, and a counterweight 17 is suspended at the other end. I have it. A compensating rope 18 is attached to the bottoms of the car 16 and the counterweight 17, and the car 16 guides the guide rail 1
The imbalance of the main rope 15 is corrected when the vehicle is guided up and down by the guide 9.

In order to support the weight of the control cable 9 itself, the control cable 9 applied to an elevator having a large up-and-down stroke has a plurality of steel wire ropes 6 extending in the entire longitudinal direction. In order to prevent the wire rope 6 from twisting and deforming in the longitudinal direction of the control cable 9, one side is generally twisted in the s twisting direction and the other side is twisted in the z twisting direction, and the rotational moments generated in the wire rope 6 are opposite to each other. Therefore, it is configured to cancel out each rotational moment.

At the end of the control cable 9, the wire rope 6 is pulled out from the control cable 9, and one wire rope 6 is wound around the groove of the outer peripheral portion of the collar 2 for suspending the control cable 9, The ends of the wire rope 6 and the wire clip 8 having different twisting directions on the other side are overlapped and connected to each other. Collar 2 is cable hanger 3 via shaft 1
It is rotatably attached to. The ends of the control cable 9 are attached in the same manner on both the car side and the building side.
As a result, the wire ropes 6 slide along the grooves on the outer peripheral portion of the collar 2 when the elongations of the s-twisted rope and the z-twisted rope differ due to aging.
I try to equalize the tension.

[0006]

Since the conventional elevator control cable device is constructed as described above, the control cable 9 becomes longer and the wire rope 6 is attached to the wire rope 6 when the building rises in height and the ascending / descending stroke becomes large. The generated stress increases. In recent years, skyscrapers of 200 m or more have appeared, and a large weight has come to act on the groove portion of the outer peripheral portion of the collar 2 that suspends the control cable 9. As the wire rope 6 is wound around the collar 2 in accordance with the super-high rise, bending stress generated in the wire rope 6 and
The tensile stress generated in the wire rope 6 increases due to the weight of the cable. That is, when the car 13 moves to the uppermost part, most of the control cable weight is supported on the car side, and the control cable weight is almost lost at the lowermost part. As described above, there is a problem that the fatigue life of the wire rope 6 is reduced by the repeated stress acting on the wire rope 6 at the end of the control cable 9 and the bending stress.

Further, the connecting portions of the wire ropes 6 of the control cable 9 are connected by the wire clips 8 by the wire ropes 6 in different twisting directions. However, when a load is applied to the wire ropes 6, the wire ropes 6 are twisted in different twisting directions. The wire rope 6 composed of strands is squeezed, the twist of the strands tends to extend, and a rotational force is generated in the wire rope 6 as shown in FIG.

When the load is released, the wire rope 6 twisted by the rotating force returns to the original state. Therefore, fluctuations in the load applied to the wire rope 6 cause rotation in the connecting portion of the wire rope 6, resulting in repeated torsional stress.

Further, as the height of the elevator is increased, the self-weight of the control cable 9 increases and the rotation angle at the connecting portion of the wire rope 6 also increases (in a 200 m class building, θ in FIG. 8 is about 180 °. However, there is a problem that the fatigue life at the end of the wire rope 6 is reduced. These reductions in service life lead to early replacement of the control cable 9 and it was necessary to spend a great deal of money on the repair.

The present invention has been made in order to solve the above problems, and provides an elevator control cable device capable of extending the fatigue life of a wire rope and suppressing the bending stress hanging on the wire rope. The purpose is to Another object of the present invention is to obtain a control cable device for an elevator, in which a plurality of collars are arranged on the same axis to save space, the slip between the collar and the wire rope is eliminated, and the collars can be rotated individually. And

[0011]

A control cable device for an elevator according to the present invention has a length of a cable which has one end connected to a car which is guided by a guide rail to move up and down a hoistway and the other end connected to a building. In a control cable device for an elevator, which comprises a plurality of strands in different directions and has different ropes in the twisting direction inserted, a rope suspension means for hanging and suspending one of the ropes different in the twisting direction, and the winding. It is provided with a rope connecting portion that overlaps and connects the ends of one rope and the other rope that are hung and suspended, and a rotation preventing unit that prevents the rope on the connected side from rotating. .

Further, a cable having one end connected to a car which is guided by the guide rails to move up and down the hoistway and the other end of which is connected to the building is composed of a plurality of strands in different longitudinal directions. In the control cable device inserted through, one of the different ropes in the twisting direction is wrapped around the rope, and one rope is wrapped around the collar at the end, and then the other rope and A rotation preventing jig that connects the connecting portion connecting the end portions to each other and the connecting-side rope and the non-connecting rope, and prevents the connected rope from rotating by using the non-connecting rope as a stopper. It is equipped with.

Further, it is intended to prevent rotation of the ropes on the side of connecting the upper and lower sides of the connecting portion.

Further, a rope interval for guiding the interval of each rope suspended by a collar having a diameter larger than the interval between the rope on the connecting side and the rope on the non-connecting side so as to match the rope interval of the cable constituent part. It is equipped with a correction means.

Further, each cable is suspended by a plurality of collars rotatably attached to the cable hanger via an axis.

In the rotation preventing jig, the rope on the connection side is clamped by a stopper and fixed to a flat plate, and the rope on the non-connection side is inserted into the inner surface of the U bolt fixed to the flat plate with a clearance. Is configured to do.

The stopper plate is made of a non-ferrous material.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. Embodiment 1. 1 is a front view showing a main part of an elevator control cable device according to a first embodiment of the present invention. FIG. 2 is a side view showing a main part of the control cable device for the elevator shown in FIG. In the figure, the cable hanger 3 is attached to the lower part of the car floor. A collar 2 is supported by a shaft 1 inserted in a cable hanger 3, and one wire rope 6 of a control cable 9 is wound around a groove provided on the outer peripheral portion of the collar 2. The other wire rope 6 of the control cable 9 has a twisting direction different from that of the above-mentioned one wire rope 6, and at the site of installation, the one wire rope 6 is overlapped with the above-mentioned one wire rope 6 and fixed by a wire clip 8 or the like. ing.

A holder 5 is attached to a lower portion of an attachment metal 4 which is inserted through the shaft 1 along both side surfaces of the collar 2. On the inner side surface of the holder 5, there is formed a circular saw portion corresponding to the diameter of the collar 2 and the distance between the two wire ropes 6 in the control cable 9, and the wire rope 6 is guided along this surface. (FIG. 1 shows a case where the collar 2 is large with respect to the distance between the two wire ropes 6 in the control cable 9 as shown below.) A plurality of wire ropes 6 that are connected to each other. An anti-rotation jig 7 and an anti-rotation jig 10 are provided above and below the wire clip 8, respectively.

As shown in FIG. 3, the rotation preventing jigs 7 and 10 are firmly fixed to the side connecting the wire ropes 6 with bolts 11 made of a non-ferrous material for the wire ropes 6 with bolts. However, the wire rope 6 is prevented from turning. On the other unconnected side, the wire rope 6 is surrounded by the U bolt 12, and the U bolt 12 and the stopper plate 11 are the flat plate 1
Connected at 3. In order to prevent the wire rope 6 from being twisted when a load is applied by connecting the wire ropes 6 having different twisting directions, the rotation preventing jigs 7 and 10 are provided to connect the wire ropes 6 to each other. That is, by firmly fixing the wire rope 6 in which the rotating force is generated by the stopper plate 11 and receiving the rotating force by the wire rope 6 inserted in the U-bolt 12, it is possible to prevent the wire rope 6 on the coupling side from rotating. it can. Also, when the load is released and the twisting of the wire rope 6 on the coupling side is about to be returned and a rotational force in the opposite direction is generated in the wire rope 6, the rotation of the wire rope 6 can be similarly prevented. Therefore, it is possible to extend the fatigue life of the wire rope 6 by pressing the innumerable rotations of the wire rope 6 that occur as the elevator is repeatedly moved up and down.

There is a slight gap between the U-bolt 12 and the wire rope 8, and when the s-twisted and z-twisted wire ropes 6 are extended by the weight of the control cable 9 and have different lengths, the collar 2 is Rotate to equal length. At this time, the U bolt 12 does not regulate the movement of the wire rope 8. Although the rotation preventing jig has been described above, the rotation preventing jig is not limited to the above structure, and a structure in which the wire rope 6 on the connection side is fixed and the rotational force is received by the wire rope 6 on the non-connection side. If the wire rope 6 has the same effect, the wire rope 6 on the connection side may be fixed and a means for receiving the rotational force may be obtained in addition to the wire rope 6 on the non-connection side.

Further, the diameter of the outer peripheral portion of the collar 2 is made large (for example, the diameter of the groove portion is φ103 mm), and the wire rope pitch P (for example, 45 mm) in the control cable portion 9 and the collar 2 are set.
The holder 5 guides the difference between the outer diameter of the groove and the diameter of the groove to correct the rope interval. Therefore, the bending stress of the wire rope 6 due to the large collar diameter can be reduced, the deterioration of the wire rope strength can be suppressed, and the life of the wire rope 6 can be extended.

A plurality of collars 2 are inserted through the shaft 1 supported by the cable hanger 3, and the control cables 9 are suspended on the collars 2. Therefore, a plurality of collars 2 are arranged on the same axis to save space, and each collar 2 is rotated so that the elongation of the wire rope 6 can be adjusted, and slippage between the collar 2 and the wire rope 6 can be performed. Is gone. Further, the rotation of the collar 2 can be individually performed.

In order to keep the distance between the collar 2 and the holder 5 constant, the holder 5 was positioned by supporting the holder 5 with a mounting metal 4 inserted through the shaft 1.

[0025]

As described above, according to the present invention, one end is connected to the car that is guided by the guide rails and that moves up and down the hoistway, and the other end is connected to the building side in the longitudinal direction of the cable. In a control cable device for an elevator, which is made up of different strands and has different ropes in different twisting directions, a rope suspension means for suspending and suspending one of the different ropes in different twisting directions, and a suspension means for suspending the rope. The rope at the end of the control cable is provided by including a rope connecting portion that overlaps and connects the respective ends of the one rope and the other rope, and a rotation prevention unit that prevents the rope on the connected side from rotating. It has the effect of greatly improving the fatigue life of.

In addition, one of the ropes having different twisting directions is wound around and suspended, and one end is wound around the collar, and then the other rope is overlapped with each end. By connecting the connecting part and the connecting side rope and the non-connecting side rope, and preventing the connected side rope from rotating by using the non-connecting side rope as a stopper. There is an effect that the fatigue life of the rope at the end of the control cable is greatly improved.

Further, by preventing the ropes on the side connected above and below the connecting portion from rotating, the fatigue life of the rope at the end of the control cable can be further improved.

Also, a rope interval for guiding the interval of each rope suspended in the collar having a diameter larger than the interval between the rope on the connecting side and the rope on the non-connecting side so as to match the rope interval of the cable component. By providing the correction means, the bending stress hanging on the rope in the collar portion is reduced by the increase in the collar diameter, and the fatigue life of the rope in that portion is improved.

Also, by suspending each cable on a plurality of collars rotatably attached to the cable hanger via the shaft, space is saved and each collar rotates to adjust the elongation of the rope. As it is possible, it prevents slippage between the collar and the rope. In addition, each color can be rotated individually.

In addition, the rotation preventing jig fixes the rope on the connection side to the flat plate by sandwiching it with a stopper plate, and inserts the rope on the non-connection side into the U-bolt fixed to the flat plate with a clearance. With this configuration, the rotation preventing jig can be easily attached to the elevator control cable device, and the manufacturing cost is low.

Further, by using a non-ferrous material for the stopper plate, the stopper plate is made softer than a rope made of carbon steel or stainless steel so as to prevent contact with the rope and damage to the rope due to slippage. The effect is to extend the life of the rope.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of an elevator control cable device according to a first embodiment of the present invention.

2 is a side view showing a main part of the elevator control cable device of FIG. 1. FIG.

3 is a plan view showing a rotation preventing jig of the elevator control cable device of FIG. 1. FIG.

FIG. 4 is a side view showing another example of the main parts of the elevator control cable device according to the first embodiment of the present invention.

FIG. 5 is an overall configuration diagram showing a general elevator.

FIG. 6 is a front view showing a main part of a conventional elevator control cable device.

FIG. 7 is a side view showing a main part of the elevator control cable device of FIG. 6;

FIG. 8 is an explanatory diagram showing a rotational force that is suspended on a main part of a conventional elevator control cable device.

[Explanation of symbols]

1 axis, 2 colors, 3 cable hangers, 4 mounting brackets, 5 holders, 6 wire ropes, 7 anti-rotation jigs, 8 wire clips, 9 control cables, 10 anti-rotation jigs, 11 clasps, 12 U bolts, 13 Flat plate, 14 hoisting machine, 15 main rope, 16 car, 17 counterweight, 18 compensating rope, 19 guide rail

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B66B 7/06

Claims (7)

(57) [Claims] 1. A rope having a plurality of strands extending in the longitudinal direction of a cable, one end of which is connected to a car that is guided by a guide rail to move up and down a hoistway, and the other end of which is connected to the building side. In the elevator control cable device, the rope suspension means for suspending and suspending one rope of ropes different from each other in the twisting direction, and the one rope and the other rope suspended and suspended. A control cable device for an elevator, comprising: a rope connecting portion that overlaps and connects the respective end portions; and a rotation preventing unit that prevents the rope on the connected side from rotating. 2. A rope having a plurality of strands extending in the longitudinal direction of a cable, one end of which is connected to a car that is guided up and down in a hoistway by being guided by a guide rail, and the other end of which is connected to a building side, the ropes having different twist directions. In the control cable device inserted through, one of the different ropes in the twisting direction is wrapped around the rope, and one rope is wrapped around the collar at the end, and then the other rope and A rotation preventing jig that connects the connecting portion connecting the end portions to each other and the connecting-side rope and the non-connecting rope, and prevents the connected rope from rotating by using the non-connecting rope as a stopper. Elevator control cable device characterized by having. 3. The elevator control cable device according to claim 1, wherein rotation of the rope on the side where the connecting portion is connected above and below is prevented. 4. A rope spacing for guiding the spacing of each rope suspended in a collar having a diameter larger than the spacing between the connecting rope and the non-connecting rope to match the rope spacing of the cable component. The elevator control cable device according to claim 2, further comprising a straightening unit. 5. The elevator control cable device according to claim 2, wherein each cable is suspended from a plurality of collars rotatably attached to the cable hanger via an axis. 6. The anti-rotation jig fixes a rope on the coupling side with a stopper and fixes it to a flat plate, and inserts the rope on the non-coupling side into the U-bolt fixed to the flat plate with a clearance. The control cable device for an elevator according to claim 2, wherein the control cable device is configured to operate. 7. The elevator control cable device according to claim 6, wherein the stopper plate is made of a non-ferrous material.