JPH11335087A - Winch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winch device capable of reducing labor of a worker and giving proper terminal tension by a simple constitution. SOLUTION: A device is constituted by a capstan which 10 and a tension device 20, the capstan winch 10 is constituted capably of drawing a main rope R successively delivered. The tension device 20 is provided on the delivery side of the main rope R by the capstan winch 10, so as to draw the main rope R delivered from the capstan winch 10. This tension device 20, having upper/ lower rubber rollers 21, 22, is rotated by transmitting drive force of an oil hydraulic motor 13 through each pulley 16, 26 and a timing belt 18, but the main rope R is drawn and a speed faster than a drawing speed of the main rope R by the capstan which 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winch used for winding a parent rope connected to an electric wire when the electric wire is stretched in the operation of stretching an electric wire on a power pole. Related to the device.

[0002]

2. Description of the Related Art When performing the above-mentioned wire stretching work, first, a rope (so-called "parent rope") is attached to the end of a wire wound on a wire drum disposed on the ground or on a work vehicle. ) And hang this parent rope between the telephone poles. Then, by pulling the main rope to draw (extend) the electric wire, the electric wire is bridged between the utility poles. In addition, a pulley called a so-called wheel is attached to the arm of the electric pole so that the extension can be easily performed, and the main rope and the electric wire are wrapped around the pulley.

[0003] Here, in the work of stretching an electric wire in a long distance section relayed by a plurality of electric poles, the leading end of the electric wire is pulled by pulling a parent rope having a length corresponding to the distance in this section. Over the entire length of the section. The force required for pulling the parent rope in such a long distance section is considerably large depending on the weight of the electric wire, so that the manual wire drawing operation imposes heavy labor on the worker. For this reason, in order to reduce the labor of the operator, particularly in the extension work of a long distance section, a capstan winch or the like configured to rotate the capstan using the rotation of the axle of the work vehicle is used. The wire is extended by taking up the parent rope.

[0004] When the parent rope is taken up by using the capstan winch as described above, the rope taken up by the capstan is sequentially fed out from the capstan, but the rope is wound around the capstan and the capstan. In order to apply a constant frictional force between the rope and the rope, it is necessary to apply a pulling force (hereinafter referred to as "tail tension") to the rope pulled out from the capstan, also referred to as back tension or hand tension. There is.

[0005]

However, applying manual tension to the buttocks has the problem of increasing the labor of the operator. Therefore, a winch device provided with a tail pick device for applying a tail tension separately from the capstan winch has been conventionally known.However, in the conventional tail pick device, an endless band is used to securely pull the parent rope. Are arranged so as to face each other up and down, so that there is a problem in that the buttocks take-up device becomes large. Further, in such a buttocks take-up device, no consideration has been given to giving a proper buttocks tension. Also, JP-A-56-7
No. 5397 discloses a buttocks picking device which controls so as to maintain a necessary buttocks tension, but has a problem that the buttocks picking device becomes larger due to its complicated configuration.

The present invention has been made in view of such a problem, and provides a winch device that can reduce the labor of an operator and can apply appropriate hand tension with a simple configuration. It is intended to be.

[0007]

In order to solve such a problem, a winch device according to the present invention comprises a capstan and a pulling means, and the capstan is rotated with a rope wound thereon. It is configured such that the rope can be taken out and sequentially fed out by driving. The pulling means is provided on the side where the rope is fed by the capstan, and pulls the rope fed from the capstan. The pulling means includes a pair of rollers (for example, the upper rubber roller 21 and the lower rubber roller 22 described in the embodiment), and roller driving means (for example, the hydraulic motor 13 and the pulleys 16 described in the embodiment) for rotating the rollers. , 26, and the timing belt 18).

The pair of rollers are arranged with their outer peripheral surfaces facing each other. The pair of rollers is configured to pull the rope pulled out from the capstan by rotating while holding the rope between the outer peripheral surfaces. Further, the roller driving means is configured to rotate the rollers to pull the rope by a pair of rollers at a speed higher than the speed of pulling the rope by the capstan.

According to the winch device configured as described above, the ropes taken up by the capstan are sequentially drawn out from the capstan, but the pulled-out ropes are pulled by the pulling means. Here, the pulling speed of the rope by the pulling means is faster than the pulling speed of the rope by the capstan (the feeding speed from the capstan), so that the rope wound around the capstan does not slack and is pulled out from the capstan. The tail rope tension can be applied to the rope. Thereby, a frictional force sufficient to pull the rope between the capstan and the rope can be obtained.

In the winch device according to the present invention, the rollers are driven using the driving force of capstan driving means (for example, the hydraulic motor 13 described in the embodiment) for driving the capstan to rotate. It is preferable to configure a roller driving unit. With such a configuration, it is possible to apply a hand tension to the rope with a simple configuration without separately providing a driving unit for driving the roller.

Further, in the winch device according to the present invention, the distance adjusting means (for example, as described in the embodiment, the lowering rubber roller 22
It is preferable to provide a mechanism for raising and lowering the lower roller holding member 24 supporting the pair of rollers so that the facing distance between the pair of rollers can be adjusted. With this configuration, when the rope is clamped between the pair of rollers, the rope can be easily clamped by increasing the interval between the rollers, and the clamping force can be adjusted even when the diameter of the rope changes. Can be easily performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. The winch device 1 includes a capstan winch 10 and a tension device 2.
0. When the pulling device 20 pulls the parent rope R by the capstan winch 10, the parent rope R unreeled from the capstan 11.
The purpose of this is to give the hand a tension.

First, the capstan winch 10 will be described. The capstan winch 10 includes a capstan 11 formed in a substantially drum shape such that the diameter at the center in the left-right direction is smaller than the diameter at the left and right ends, and a base 12 rotatably supporting the capstan 11. And this base 12
And a hydraulic motor 13 that is attached to the capstan 11 and drives the capstan 11 to rotate. A pulley support shaft 15 is attached via a torque limiter 14 to an end surface of the capstan 11 opposite to the end surface to which the hydraulic motor 13 is connected, and a capstan side pulley 16 is attached to the pulley support shaft 15. Have been.

According to the capstan winch 10 configured as described above, the oil supply hose 17 connected to the hydraulic motor 13 is used to control the supply and discharge of hydraulic oil from a hydraulic source (not shown). , The capstan 11 and the capstan side pulley 16 can be rotated. A timing belt 18 is wrapped around the capstan-side pulley 16.
At the pulling side pulley 26.

The tensioning device 20 includes an upper rubber roller 21 and a lower rubber roller 22 disposed opposite to the upper roller 21.
And an upper roller holding member 23 for rotatably holding the upper rubber roller 21 and a lower roller holding member 24 for rotatably holding the lower rubber roller 22. The upper rubber roller holding member 23 is attached to the base 12 which also holds the capstan 11 and the like, and the lower roller holding member 24 is attached to the upper roller holding member 23 so as to be able to move up and down.

The upper rubber roller 21 includes an upper roller body 21a formed in a donut shape by a rubber material and an upper wheel 21b for supporting the upper roller body 21a, and has a configuration similar to a so-called rubber tire.
The upper wheel 21b is attached to one end of an upper roller support shaft 25, and the upper roller support shaft 25 is rotatably held by an upper bearing portion 23a provided on the upper roller holding member 23. The pulley 26 on the tension side is attached to the other end of the upper roller support shaft 25, and the timing belt 18 is looped around as described above. Therefore, by rotating the capstan 11, the upper rubber roller 21 is moved via the timing belt 18 to the capstan 1.
Rotate in the same direction as 1.

The lower rubber roller 22, like the upper rubber roller 21, also includes a lower roller body 22a and a lower wheel 22b.
4e. The lower roller support shaft 24e is rotatably held by a lower bearing 24f provided on the lower roller holding member 24. The lower roller holding member 24 includes a left holding member 24a and a right holding member 24b. The lower roller holding member 24 is integrally connected to the left and right holding members 24a and 24b by a connecting member 24c.

A female screw 24d is attached to the connecting member 24c, and a male screw 28a of a lifting handle 28 is screwed to the female screw 24d. The male screw 28a is rotatably attached to the upper roller holding member 23 at the lower end, and a handle main body 28b for rotating the male screw is attached to the upper end.
Thus, when the handle body 28b is rotated, the male screw 28a rotates, and the female screw 24d moves up and down with respect to the male screw 28a. Therefore, the lower roller holding member 24 can be moved up and down with respect to the upper roller holding member 23. it can.

Further, a rope guide 27 composed of left and right rope guides 27a and 27b is mounted inside each of the left and right holding members 24a and 24b. When the main rope R is held by the upper and lower rubber rollers 21 and 22 as described in detail later,
This is to prevent the main rope R from coming off the left and right sides of both rubber rollers 21 and 22.

The lower roller holding member 2 thus configured
Reference numeral 4 denotes an operation of raising and lowering the upper roller holding member 23 by performing the raising and lowering operation of the raising and lowering handle 28. By performing such a raising and lowering operation, the upper rubber roller 21 and the lower rubber roller 22 The distance can be moved closer and further away.

According to the winch device 1 configured as described above, the lower roller holding member 23 by the lifting handle 28 is used.
The lower rubber roller 2 and the lower rubber roller 2
After a gap is provided between the upper and lower rubber rollers 2 in such a manner that the main rope R is wound around the capstan 11 for two or three turns.
Pass between 1 and 22. In this manner, the lower roller holding member 23 by the elevating handle 28 with the parent rope R passed therethrough.
Is performed, and the parent rope R is held between the outer peripheral surface of the upper rubber roller 21 and the outer peripheral surface of the lower rubber roller 22. If the supply / discharge control of the hydraulic oil to / from the hydraulic motor 13 is performed,
The capstan 11 and the upper rubber roller 21 can be driven to rotate.

Here, in the winch device 1, the diameter of the capstan side pulley 16 and the pulling side pulley 26, the distance r1 from the center of the capstan 11 to the center of the parent rope R, and the center of the upper rubber roller 21 are held. By adjusting the distance r2 to the center of the parent rope R
The pulling speed S2 by the pulling device 20 is set to be about 20% faster than the pulling speed S1 of the parent rope R to the capstan 11 (= extending speed from the capstan 11). As a result, the parent rope R wound around the capstan 11 does not slack, and an appropriate frictional force is generated between the capstan 11 and the parent rope R. R can be picked up.

The roller main bodies 21a and 22a are made of a material other than rubber as long as they have a hardness such that they elastically deform when the parent rope R is held therebetween and do not slip even in a state having the above-mentioned speed difference. It may be formed using a material. Further, even when the holding position of the main rope R in the left-right direction is shifted (when the main rope R is held at a position indicated by a chain line in FIG. 3), the roller bodies 21 a and 22 a are deformed and Rubber roller 2
Since it does not come off from 1 and 22, the parent rope R can be firmly clamped. Thereby, a constant tail tension can always be applied to the parent rope R wound around the capstan 11.

When the parent rope R is to be taken in this way, as described above, the upper rubber roller 21 is
The upper and lower rubber rollers 21 and 22 rotate faster than
In this case, the upper and lower rubber rollers 21 and 22 or the parent rope R may be damaged. For this reason, in the winch device 1, the capstan 11 and the pulley support shaft 15
And a torque limiter 14 is provided between the upper and lower rubber rollers 21 and 22 by rotating the capstan 11 only when a force greater than a predetermined pressing force (rotation torque) is applied. Parent rope R
To prevent the upper and lower rubber rollers 21 and 22 or the parent rope R from being damaged.

A case where the electric wire C is stretched between the electric poles D1 and D2 by using the winch device 1 thus configured will be described with reference to FIG. FIG. 4 shows an aerial work vehicle 3 provided with a winch device 1 according to the present invention. The aerial work vehicle 3 is mounted on the vehicle body 31.
1 has a swivel base 32 that can be swiveled with respect to 1. At the tip of the boom 33, a work table 34 configured to allow an operator to ride is mounted, and on the front, rear, left and right sides of the vehicle body 31, when the boom 33 is raised and extended, the vehicle body 31
Are provided in order to stably support. The winch device 1 is provided by mounting the base 12 on the vehicle body 31 of the aerial work vehicle 3 configured as described above.

When the work of stretching the electric wire C from the right power pole D2 to the left power pole D1 is performed, first, the power pole D2
The main rope R is tied to the end of the electric wire C wound on the cable drum CD installed on the ground on the side. Then, using the workbench 34 of the aerial work vehicle 3, the utility poles D1, D
2 and pulleys K1 and K2, respectively.
Hook the parent rope R around 1 and K2.

Next, the capstan 1 of the winch device 1
The aerial work vehicle 3 is stopped so that one side is located on the opposite side of the utility pole D2 with respect to the utility pole D1. After winding the end of the parent rope R opposite to the side tied to the electric wire C around the capstan 11 two or three times, the raising / lowering handle 28 is operated and the upper and lower rubber rollers 21 and 22 are used to rotate the parent rope R. To hold. Then, by driving the hydraulic motor 13, the parent rope R is taken by the capstan 11, and the electric wire C is extended from the right electric pole D2 to the left electric pole D1.

At this time, since the pulling speed S2 by the pulling device 20 is set to be about 20% faster than the pulling speed S1 of the parent rope R to the capstan 11, the parent reel unreeled from the capstan 11 is set. The rope R can always be given a constant tail tension. For this reason, it is possible to quickly and easily take-up the parent rope R without giving excessive labor to the operator,
The extension of the electric wire C from the utility pole D2 to the utility pole D1 can be easily performed.

In the above embodiment, the case where the aerial work vehicle 3 is stopped on the opposite side of the utility pole D2 with respect to the utility pole D1 and the wire C is stretched has been described.
As shown by a dashed line in FIG.
Alternatively, the vehicle may be stopped in the same direction as the utility pole D2 to perform the stretching work. When the aerial work vehicle 3 is stopped in this way, another pulley K is also provided below the utility pole D1.
3 is attached so that the take-up direction of the parent rope R is changed.

Next, with reference to FIGS. 5 and 6, a description will be given of a winch device 101 which can be used for applications other than the above-mentioned take-up of the parent rope R. FIG. The winch device 101 has a capstan winch 10 and a pulling device 20 like the winch device 1, but since they have the same configuration, they are denoted by the same reference numerals and are described in detail here. Detailed description is omitted. In the winch device 101, the four-sided roller 11 guides the electric wire C up, down, left, and right and can be fed from the winch device 101.
9 is provided on the base 112. Four-sided roller 119
Is located behind the vehicle body with respect to the tension device 20 (FIGS. 5 and 6).
At the right). In addition, tension device 2
It may be provided at the front (left side) of the vehicle body with respect to 0.

The winch device 101 thus configured
The case where the main rope R is taken out and the electric wire D is extended in the work of stretching the electric wire C from the electric pole D3 on the left side to the electric pole D4 on the right side will be described with reference to FIG. The winch device 101 is provided on the body of the work vehicle 103, and a cable drum CD capable of winding the electric wire C and the parent rope R is also provided on the body of the work vehicle 103. Although the boom 33 is not described in the work vehicle 103, a configuration having the boom 33 on the vehicle body may be employed.

When extending the electric wire C from the electric pole D3 to the electric pole D4, the work vehicle 103 having the cable drum CD around which the electric wire C is wound is positioned outside the electric pole D3, and the main rope R A work vehicle 103 'having an empty cable drum CD' for winding is positioned outside the utility pole D4. Then, as shown in FIG. 6 (A), the lower rubber roller 22 is moved downward by operating the lifting handle 28 of the winch device 101 provided on the work vehicle 103 on the side where the electric wire C is fed, and the upper rubber roller 21 A large gap is provided between them.

Next, after the electric wire C is placed on the lower rubber roller 22, the electric wire C is passed between the rollers of the four-sided roller 119. After that, similar to the above stretching work,
The main rope R is tied to the end of the electric wire C, and the main rope R is picked up using the winch device 101 'provided on the work vehicle 103' on the side of the utility pole D4, and the electric wire C is stretched. Here, the work vehicle 103 has an empty cable drum CD
Is disposed, unlike the case where the work for winding the parent rope R in the aerial work vehicle 3 is performed, the parent rope R drawn out from the tension device 20 is wound around the cable drum CD '. . In the winch device 101 used for feeding out the electric wire C, the electric wire C is not wound around the capstan 11. Further, the four-sided roller 119 is not used in the winch device 101 'for winding the parent rope R.

In this manner, by pulling out the parent rope R, the electric wire C wound on the cable drum CD is transferred to the lower rubber roller 22 and the four-sided roller 119.
And is fed out from the utility pole D3 toward the utility pole D4. At this time, the lower rubber roller 22 is rotatably held by the lower roller holding member 24, and the rope guides 27 are provided on the left and right sides thereof, so that the electric wire C can be smoothly fed. Further, a four-sided roller 1 provided rearward with respect to the lower rubber roller 22 is provided.
Since the wire C is also guided, the wire C can be fed out in a stable state while being kept substantially horizontal.

After the main rope R is pulled by the winch device 101 'and the wire C having the length required for the tension is extended, the pull of the main rope by the winch device 101' is stopped. Next, FIG.
The lower rubber roller 22 is raised by operating the lifting handle 28 as shown in FIG.
2 securely clamps the electric wire C. At this time, since the operation of the capstan winch 10 is stopped, the upper rubber roller 21 does not rotate, and the wire C can be firmly held in the winch device 101 without being fed out.

After the electric wire C is held in the winch device 101 in this manner, the upper and lower rubber rollers 21 and 22
(For example, at a point P in (B)), the electric wire C is cut using a cutter (not shown). By using the winch device 101 in this way, the electric wire C can be easily fed out, and the cutting after the feeding can be easily performed. In addition, since the same work vehicle can be used on the side where the electric wire C is extended and the side where the parent rope R is taken off, there is no need to prepare a plurality of types of work vehicles, and the cost of the work of stretching the electric wire C is reduced. be able to.

In each of the above embodiments, the case where only one electric wire C is extended between the electric poles has been described, so that the winch devices 1 and 101 are mounted on the aerial work vehicle 3 and the work vehicle 103 in each figure. Although a state in which one unit is provided is shown, a plurality of winch devices 1 and the like may be arranged in the aerial work vehicle 3 and the like. In the case where a plurality of winch devices 1 and the like are provided in this manner, a plurality of wires can be stretched between utility poles at the same time.

In each of the above embodiments, the distance r from the center of the capstan 11 to the center of the parent rope R is set.
1 and the distance r2 from the center of the upper rubber roller 21 to the center of the parent rope R held therebetween is constant. Therefore, by adjusting the diameters of the capstan side pulley 16 and the pulling side pulley 26, the parent rope R is adjusted. Capstan 11
It is possible to adjust the pulling speed S2 by the pulling device 20 with respect to the pulling speed S1.

The adjustment of the pulling speed S2 with respect to the pulling speed S1 does not necessarily need to be performed by replacing the pulley with a different diameter as described above. It is also possible to provide a configuration that can be adjusted steplessly or stepwise without replacing the pulleys. Further, it may be performed by changing the diameter of the capstan 11 and the upper and lower rubber rollers 21 and 22.

[0040]

As described above, the winch device according to the present invention is provided with the pulling means on the side where the rope is drawn out by the capstan, and the pulling means pulls the rope drawn out from the capstan. I have. The roller driving means for driving the pair of rollers constituting the pulling means pulls the rope by the pair of rollers at a speed higher than the speed of taking up the rope by the capstan. For this reason, the rope wrapped around the capstan does not sag, and the rope pulled out from the capstan is provided with a hand tension to obtain a sufficient frictional force between the capstan and the rope to pull the rope. Can be granted.

In the winch device according to the present invention, it is preferable that the roller driving means is configured to drive the roller using the driving force of the capstan driving means for driving the rotation of the capstan. Thus, it is not necessary to separately provide a driving unit for driving the roller, so that the configuration of the winch device can be simplified.

Further, in the winch device according to the present invention, it is preferable that the interval adjusting means is provided to adjust the interval between the pair of rollers. This allows
When the rope is held between the pair of rollers, the rope can be easily held by increasing the distance between the rollers.
In addition, by adjusting the facing distance between the pair of rollers while the rope is held therebetween, it is possible to reliably pull the rope without sliding the rope against the rollers even when the diameter of the rope changes.

[Brief description of the drawings]

1A is a plan view of a winch device of the present invention, and FIG. 1B is a sectional view taken along the arrow B in FIG.

FIG. 2 is a sectional view of the above winch device taken along the line II-II in FIG.

FIG. 3 is a sectional view of the winch device taken along the line III-III in FIG. 1;

FIG. 4 is a side view showing a state where an electric wire is being stretched using an aerial work vehicle provided with the winch device.

FIG. 5 is a side view showing a state in which an electric wire is being stretched using two aerial work vehicles provided with the winch device according to the present invention.

FIG. 6 is a side view of the winch device, in which (A) shows a state in which the electric wire is being fed, and (B) shows a state in which the electric wire is held.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 101 Winch device 10 Capstan winch 11 Capstan 12 Base 16 Capstan side pulley 18 Timing belt 20 Pulling device 21 Upper rubber roller 22 Lower rubber roller 26 Pulling side pulley

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor: Takashi Mori, 1152, Yamashita, Ryoke, Ryoji, Ageo City, Saitama Prefecture Inside Aichi Corporation Ageo Works (72) Keiichi Yokoyama 1152, Ryoke, Ryoke, Ryoke, Ageo, Saitama Prefecture No.10 Aichi Corporation Ageo Works

Claims (3)

[Claims] 1. A capstan that is rotatably driven with a rope wound thereon and that can pull out and pull out the rope; and a capstan provided on a side where the rope is fed by the capstan, and the capstan that is fed from the capstan. A pulling means for pulling the rope, wherein the pulling means is arranged with the outer peripheral surfaces opposed to each other, and pulls the rope pulled out from the capstan by rotating while clamping the rope on the outer peripheral surface. A winch, comprising: a pair of rollers; and roller driving means for rotating the rollers to pull the rope by the pair of rollers at a speed higher than a speed at which the rope is pulled by the capstan. apparatus. 2. The roller driving unit according to claim 1, wherein the roller driving unit drives the roller by using a driving force of a capstan driving unit that drives the capstan to rotate.
The winch device according to item 1. 3. The winch device according to claim 1, further comprising an interval adjusting means for adjusting an interval between the pair of rollers.