JP2000134737A - Spiral hanger, cable traction method and traction device - Google Patents

Abstract

(57) [Summary] [Problem] A spiral hanger is wound around an existing cable from the ground. SOLUTION: In the towing apparatus 1, a rotating body 21 is rotatably supported by a U-shaped main body supported by a support line 113. The rotating body 21 has a C-shape with an entrance on the peripheral surface, and has a ring gear 25 on the outer peripheral surface. Ring gear 25
Is rotated integrally with the rotating body 21 by the drive gear 34 rotated by the electric motor 41 via the intermediate gear 31. A connecting portion 60 is provided on the rotating body 21, and one end of the spiral hanger 119 is connected to the connecting portion 60.
The bracket body 55 to which the electric motor 41 is attached includes
A towing tool 67 having a towing rope 69 is provided, and the spiral hanger 119 is supported by pulling the towing rope 69 while rotating the rotating body 21 and moving the towing device 1 from the ground along the support line 113. It can be wound around an existing cable consisting of the line 113 and the main line 115.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for pulling a spiral hanger, and more particularly, to a method for winding a plurality of overhead communication lines suspended by a support wire stretched between utility poles around an existing spiral hanger cable. The present invention relates to a spiral hanger, a cable traction method and a traction device.

[0002]

2. Description of the Related Art In recent years, communication technology has been remarkably advanced, and accordingly, communication cables have been changed to optical fiber cables, and networks have been nationwide. Furthermore, with the introduction of the π system, the number of cables is increasing. The cable configuration of this π system is
It is composed of cables such as an optical cable, a collective drop fiber, and an outdoor wire, and is held by a support wire stretched between telephone poles. Due to an increase in the number of cable strips, in the case of the optical trunk cable, there is a case where the cables are separated from each other due to a shortage of a bridge point from the support wire, and the aesthetic appearance is impaired. The winding method is used in a place where a work platform can be used as one of the bundles. As another one, a spiral hanger method is used in places where aerial work vehicles cannot be used.

[0003] This spiral hanger method is usually performed by the method shown in FIG.
11 between two spans by two workers A and B.
The process is performed in the steps shown in FIGS. FIG.
1, a plurality of utility poles 111a (point A), utility poles 111b
(Point B), and a collective drop fiber (new cable) 117 (hereinafter referred to as collective drop 117) along a support line 113 and a main line (existing cable) 115 stretched on a utility pole 111c (point C). Then, a work flow chart of the spiral hanger construction method in which the bundle is formed by the spiral hanger 119 is shown.

In FIG. 11A, a worker A has a telephone pole 111.
a, the collective drop 117 is held by the movable wheel 121 movable on the support line 113 and sequentially sent out, and the power pole 111a (point A), the power pole 111b (point B), and the power pole 111c
A set drop 117 is negotiated between (point C). At this time, the set drop 117 has the same degree of sag as the sag of the main line 115. Thereby, the shape of a spiral hanger 119 described later is improved. Worker A has telephone pole 111
Ascending to a, the collective drop 117 laid at the point A is retained on the telephone pole 111a by the fastener 123. The worker B rises to the telephone pole 111c, and puts the collective drop 117 on the cable stretching device 125.
Make a cable.

In FIG. 11 (b), an operator A pushes a spiral hanger 119 of a predetermined length while adding and pushing it out from a point A to a point B. When the feeding is completed, the worker A removes the spiral hanger 119 with a terminal clamp 127 such as a U-shaped clamp. It is fixed to the support line 113. At this time, the spiral hanger 119 sequentially extends and extends those having a predetermined length, and sends out from the point A to the point B. Worker B has telephone pole 11
The wheel 121 between the power poles 1a and 111b is moved toward the point B and removed.

In FIG. 11 (c), a worker A has a telephone pole 111
The spiral hanger 119 at the point B side is fixed to the support wire 113 by the terminal clamp 127. Next, in the same manner as described above, the worker A sends the spiral hanger 119 from the point B to the point C, and when the feeding is completed, the spiral hanger 119 is fixed to the support wire 113 by the terminal clamp. In addition, the worker B removes the gold wheel 121 between the utility poles 111b and 111c by moving the wheel 121 toward the point C.

[0007] In FIG. 11 (d), a worker A has a telephone pole 111.
b is bundled with a spiral hanger 119. The worker B ascends to the telephone pole 111c, removes the stretcher 125 performed in FIG. 11 (a), and stops the collective drop 117 on the telephone pole 111c with the fastener 123C. Next, the worker B fixes the spiral hanger 119 to the support wire 113 with the terminal clamp, and the operation is completed. As a result, as shown in FIG. 11E, the power pole 111a (point A)
(C) is bundled by the spiral hanger 119.

FIG. 12 shows a spiral hanger 119 used for this. FIG. 12A shows a spiral hanger 1.
19 is a side view, and FIG. 12B is a front view. FIG.
In (a), a spiral hanger 119 includes a coated steel wire 119a and a female fitting portion 11 at one end thereof.
9b and a male fitting portion 119c at the other end. As shown in a partially enlarged view (c) of FIG. 12A, the coated steel wire 119a has a galvanized steel wire 119A disposed therein, and the outside thereof is polyethylene 119.
The coated steel wire 119a is wound in a spiral shape (spiral shape) in the longitudinal direction. One end of the female fitting portion 119
b, and a male fitting portion 119c is provided at the other end. The female fitting portion 119b and the male fitting portion 119c are connected to each other by a male fitting portion 119c inserted into the female fitting portion 119b by an engaging portion (not shown). Therefore, the fitting portions 119b, 119
By fitting c, a spiral hanger 119 having a predetermined length can be added.

FIG. 13 shows a leading ring 131 in which a spring steel material is wound in a circular shape. The leading ring 131 is detachably engaged with the tip of a spiral hanger 119 in an engaging manner so that the tip is supported when the spiral hanger 119 is fed. This is a tool attached first so as not to be caught on the line 113, the main line 115, and the collective drop 117.

[0010]

In the above-mentioned conventional spiral hanger construction method, there is a limit to the length that can be extruded because the spiral hanger is successively added and pushed out from the pole. In addition, the work is difficult because the spiral hanger is pushed out over a long distance, and the worker has to work hard. In addition, there is a problem that the difficult and severe work is a high-place work that rises on a telephone pole, and thus there is a danger of falling down, and a large amount of time and operation is required for the work time, thereby increasing the work cost. Also, if there is a branch line in the middle of the installation, the spiral hanger method may not be able to work because the leading ring cannot pass through that location. In addition, when there is a branch line in the middle of the installation, if the work of extruding from both places is performed, the joining work of the mating surfaces becomes complicated, and furthermore, there is a problem that much time and operation are spent in working time. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to wind a spiral hanger around an existing cable from one side of a pole to a target side of another pole. Another object of the present invention is to enable a spiral hanger to be wound from the ground to an existing cable, and to allow a new cable to easily pass through the spiral hanger. Still another object of the present invention is to enable a spiral hanger to be easily installed even when a branch line exists in an existing cable, and to allow a new cable to pass through the spiral hanger.

[0012]

In order to achieve the above object,
The spiral hanger pulling method according to the present invention is configured such that a main body rotatably supporting an inner peripheral portion of a cylindrical rotating body formed in a C shape having an entrance and exit on a peripheral surface and connected with a tip of the spiral hanger is provided as a support wire or a support line. Let the existing cable support it,
The rotating body is rotated, and the main body is pulled from the ground and moved along the existing cable.

The rotation of the rotating body can be performed by providing a gear mechanism between the main body and the rotating body, and using a motor provided on the main body via the gear mechanism. And, between the existing cable and the ground, a hanger guide that guides the spiral hanger to the existing cable is provided, and according to towing of the main body, another spiral hanger is sequentially connected to the rear end of the spiral hanger connected to the main body on the ground. Good. further,
When a branch line is connected to the existing cable, the towed main body may be removed from the support line or the existing cable before the branch line, and the main body may be supported by the support line or the existing cable again after the branch line and towed.

In a first cable pulling method according to the present invention, the inner peripheral portion of a cylindrical rotating body formed into a C shape having an entrance on the peripheral surface and connected to the tip of a spiral hanger is rotatable. Supporting the main body to be supported by a support wire or an existing cable, and connecting the tip of a new cable to the main body, rotating the rotating body, and pulling the main body from the ground to move along the existing cable. It is characterized by.

Further, in a second cable pulling method according to the present invention, the inner peripheral portion of a cylindrical rotating body formed into a C shape having an entrance on the peripheral surface and connected to the tip of a spiral hanger is rotatable. The main body to be supported is supported by a support wire or an existing cable, and the tip of a tow rope is connected to the main body, and the rotating body is rotated, and the main body is towed from the ground to a predetermined position along the existing cable. After moving to the end, a new cable is connected to the rear end of the tow rope, and the new cable is towed via the tow rope.

The rotation of the rotating body can be performed in the same manner as in the spiral hanger pulling method described above. In addition, it is desirable to add the spiral hanger in the same manner as in the spiral hanger pulling method. Further, even when a branch line is connected to an existing cable, the cable can be pulled in the same manner as in the above-described spiral hanger pulling method.

The traction device according to the present invention is a C-shaped tubular body having a main body supported by a support wire or an existing cable, an inner peripheral portion rotatably supported by the main body, and an entrance on the peripheral surface. A rotating body, a connecting portion of a spiral hanger provided on the cylindrical body, a gear mechanism provided between the main body and the rotating body, and rotating the rotating body via the gear mechanism provided on the main body. It is characterized by having a motor to be driven and a traction tool attached to the main body and capable of traction the main body from the ground along the existing cable.

The main body is provided with a plurality of rollers for rotatably supporting the rotating body, and the distance between the contact points of adjacent rollers with the rotating body is made larger than the width of the entrance of the rotating body. The gear mechanism includes a ring gear provided on the outer peripheral surface of the rotating body, a pair of intermediate gears meshing with the ring gear,
A drive gear attached to the motor and having a pair of intermediate gears and meshing with the pair of intermediate gears can be provided. In this case, it is desirable that the distance between the meshing points of the pair of intermediate gears with the ring gear be larger than the width of the entrance and exit. . The connecting portion is formed of an elastic body, and includes a pair of opposed openable and closable locking portions that can be inserted into the engaging holes provided at the distal end portion of the spiral hanger, and at least one of the locking portions. It is preferable to provide a separating operation section for applying a force from the ground to release the locking section from the engagement hole. Further, the main body may be provided with a tow rope for pulling the new cable or a connection portion to which the new cable can be connected.

[0019]

According to the spiral hanger towing method of the present invention configured as described above, the main body is supported by the rotary body by rotating the rotary body and towing the main body on the ground, thereby connecting the spiral hanger to the rotary body. It rotates around the existing cable and is pulled along the existing cable via the rotating body as the main body is pulled. Therefore, the spiral hanger can be safely and easily wound around the existing cable by an operation from the ground.

The rotation of the rotating body can be easily performed by the gear mechanism and the motor, so that the labor of the operator can be reduced. If a hanger guide is provided between the existing cable and the ground to guide the spiral hanger to the existing cable, damage may be caused to the connection between the spiral hanger made of plastic having low mechanical strength. In addition, the connection (addition) of the spiral hanger can be performed safely and easily on the ground. In addition, if a branch line is connected to an existing cable, remove the towed main body from the temporary support line or existing cable before the branch line, and support the main unit again at the support line or existing cable beyond the branch line. By pulling and pulling, even if there is a branch line on the way, the spiral hanger can be easily wound around the existing cable while crossing the branch line.

The first embodiment of the present invention constructed as described above
In the cable pulling method according to the above, the tip of the new cable is connected to the main body located inside the rotating body and is pulled through the main body, so that the spiral hanger is wound around the existing cable and the inside of the spiral hanger at the same time. The new cable can be passed through the cable, the work of arranging the new cable can be performed easily and quickly, and the cable can be bundled with the existing cable.

Further, the second embodiment of the present invention configured as described above
In the cable pulling method according to the first aspect, the rope for cable pulling can be passed through the inside of the spiral hanger as in the first cable pulling method. Therefore, by connecting the new cable to the tow rope and pulling the tow rope, even a heavy cable that cannot be directly connected to the main body can be negotiated easily.

A traction device according to the present invention for carrying out the above-described spiral hanger traction method includes a main body supported by an existing cable, an inner peripheral portion rotatably supported by the main body, and an entrance port on a peripheral surface. A C-shaped cylindrical rotating body having: a connecting portion of a spiral hanger provided on the cylindrical body; a gear mechanism provided between the main body and the rotating body; and a gear mechanism provided on the main body. A motor for rotating the rotating body through the motor and a traction tool attached to the main body and capable of towing the main body from the ground along the existing cable.

The main body has a plurality of rollers for rotatably supporting the rotating body, and the distance between the contact points of the adjacent rollers with the rotating body is made larger than the width of the entrance and exit, so that the entrance and exit of one roller are provided. Even in this case, the other roller supports the rotating body, and the rotating body can be smoothly rotated. Further, the gear mechanism includes a ring gear provided on the outer peripheral surface of the rotating body, a pair of intermediate gears meshing with the ring gear, and a drive gear attached to the motor and meshing with the pair of intermediate gears. By configuring so that the distance between the meshing points with the ring gear is larger than the width of the entrance / exit, one of the intermediate gears is always meshed with the ring gear, and the rotational driving force of the motor is reliably transmitted to the rotating body. be able to.

The connecting portion is formed of an elastic body, and has a pair of opposing openable and closable locking portions which can be inserted into the engaging holes provided at the distal end portion of the spiral hanger. On one side, a spiral operating hanger is provided from the ground by operating a separating operating unit with an operating rod or the like from the ground by providing a separating operating unit for applying a force from the ground to release the locking portion from the engagement hole. Can be easily separated from the rotating body, and the device can be easily collected. And by providing the tow rope which pulls a new cable or the connection part which can connect a new cable in a main body, a tow rope and a new cable can be passed easily inside the spiral hanger wound around the existing cable.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments (embodiments) of a spiral hanger, a cable pulling method and a pulling device according to the present invention will be described below in detail with reference to the drawings. First, FIG. 1 is an overall schematic side view of a first embodiment of a traction device 1,
2 is a schematic front view (Z view in FIG. 1), FIG. 3 is a side sectional view (AA sectional view in FIG. 2), and FIG. 4 is a front sectional view (FIG. 1).
FIG. In the following, the same parts as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted. Further, those provided along the longitudinal direction, such as the support line 113, the main line 115, and the collective drop 117, are expressed as "provided along the axis", and the support line 113, the main line 11
5, or those provided along the perpendicular plane on the collective drop 117 or the like are expressed as "provided orthogonal to the axis." Further, in the following, in order to facilitate the explanation, a spiral-shaped coated steel is provided on the main line (existing cable) attached to a branch line stretched between telephone poles and / or on the outer side (around) of a collective drop fiber or the like. The case where the spiral hanger 119 made of wire is wound and pulled to form a single bundle will be described. However, the pulling device 1 and the spiral hanger 119 can be simultaneously installed by connecting a collective drop (new cable) 117 or a tow rope (not shown).

1 to 4, the traction device 1 includes a U-shaped main body 3, a plurality of roller units 10 fixed on the outer periphery of the U-shaped main body 3, and a plurality of roller units 10. A rotatable inner portion rotatably supported by a ring gear 25 provided on the outer periphery, and a C-shaped rotating body portion 20 having an entrance 23 in a part of the cylindrical shape.
A pair of intermediate gear portions 30 meshing with the ring gear 25 of the rotating body portion 20; and a rotating body portion 2 meshing with the intermediate gear portion 30.
0 and an U-shaped main body 3
A part of the main body, which is fixedly mounted on the main body, and supports the electric motor part 40 and the intermediate gear part 30; a connecting part 60 attached to the rotating body part 20 and connected to the spiral hanger 119; And a towing device 67 for towing the towing device 1 from the vehicle.

3 and 4, a U-shaped main body 3 is shown.
Is composed of a U-shaped main body 5 and a U-shaped guide 7 fixed to the U-shaped main body 5. The U-shaped main body 5 is formed in a U-shape whose side surface is open. The U-shaped body 5 is provided along the axis.
On the upper surface side of the U-shaped main body 5 and on the lower surface on the upper surface 5a side, a U-shaped guide 7 whose lower part is open is fixed. The guide 7 is for supporting the traction device 1 on a support wire or an existing cable, and is provided along the support wire or the axis of the existing cable. As shown in FIG. 2, a semi-circular guide 9 whose lower side is open is provided at both ends of the U-shaped guide 7.
It is inserted and attached. This semicircular guide 9
May be fixedly provided on the guide 7 or attached with bolts or the like (not shown). The semi-circular guide 9 engages with a support wire or an existing cable.
The support line 113 is prevented from being damaged, and the traction device 1 can easily move in the longitudinal direction of the support line 113, the main line 115, the collective drop 117, and the like.

A plurality of roller portions 10 (two in this embodiment) are provided outside each surface of the U-shaped main body 5.
Is attached. The roller unit 10 includes a U-shaped bracket 11, a roller 13 rotatably attached to the bracket 11, and a roller 13 inserted into the shaft of the roller 13.
And a roller pin 15 attached to the bracket 11 so as to be rotatable. The rollers 13 are attached to the outer surfaces of both ends of the U-shaped bracket 11 and are provided as a pair at predetermined intervals in the axial direction of the rotating body 20 (see FIG. 3). 20 are provided in the circumferential direction, and each roller 13
Are provided on the same circumference. Note that, in the roller unit 10 described above, the interval Ma between the contact points of the pair of adjacent rollers 13a and 13b located in the circumferential direction of the rotating body unit 20 with the rotating body 21 is determined by an entrance 23 of the rotating body 21 described later. Even if one of the pair of rollers 13a and 13b enters, the rotating body 21 is supported by the other pair of rollers that do not enter so that the width is wider than a predetermined width Ba of the entrance 23 (Ba <Ma). It is arranged to become.

The rotating body 20 is a hollow cylindrical rotating body 2.
1 and a ring gear 25 fixed on the outer periphery of the rotating body 21
And a hook bracket 27 attached to the side surface of the rotating body 21 and are provided along the axis. As shown in FIG. 3, the rotating body 21 includes a cylindrical main body 21a, and a tapered conical part 21b provided at both ends of the main body 21a and having an outer diameter gradually increasing outward. And the rotating body 21
Has a C-shape with a part of the entrance 23. The ring gear 25 is a cylinder having a convex cross-section, has a gear 25 a at a projection, and is fixed to the outer periphery of the main body 21 a of the rotating body 21. Similarly, the ring gear 25 has an entrance 23 having a predetermined width Ba in a part thereof. Accordingly, as shown in FIG. 2, the rotating body 20 has a C-shaped outer diameter and tapered conical sections 2 at both ends.
The inner diameter portion 21d of 1b has a circular diameter which is gradually increased and inclined. The outer peripheral edge of each roller 13 contacts a part of the inner peripheral surface which is sequentially enlarged and inclined,
Both ends are in contact with the tapered circular diameter. For this reason,
Since the rotating body 21 is in contact with the roller 13 at both tapered portions, it cannot be moved along the axis and is held rotatably. That is, even if one of the pair of rollers 13a and 13b enters, the rotating body 21 supports the rotating body 21 with the roller that does not enter, and the lower surface 5b and the side surface 5c of the U-shaped main body 5. (FIG. 4
) Is rotatably held to be supported by a plurality of other rollers 13 attached to the roller 13.

Referring to FIG.
Is attached to the conical portion 21b on the rear side in the traveling direction of the traction device 1. A connecting portion 60 is attached to the hook bracket 27, and the spiral hanger 119 is rotated via the connecting portion 60. The intermediate gear portion 30 includes an intermediate gear 31 and an intermediate gear pin 33 that rotatably supports the intermediate gear 31 and that is attached to a bracket portion 50 described later. The pin 33 for the intermediate gear is
The two intermediate gears 31a and 31b are provided as a pair and separated from each other by a predetermined distance, and are provided along the axis.
Each meshes with the ring gear 25 of the rotating body portion 20. Since the respective intermediate gears 31a and 31b are attached so as to mesh with each other at a position of an interval Ga wider than a predetermined width Ba of the entrance 23 provided in the rotating body portion 20,
For example, even if the pair of intermediate gears 31a enters the entrance 23 and loses meshing, the other pair of intermediate gears 31b meshes with the ring gear 25 and rotates the rotating body portion 20.

The pin 33 for the intermediate gear is connected to the bracket 50.
And the bracket portion 50
, The intermediate gear 31 is supported, and the side surface of the intermediate gear 31 is screwed to the bracket part 50 with a clearance on the side surface to rotatably support the intermediate gear 31.

In FIG. 3, the electric motor section 40 includes an electric motor 41, a drive gear 43 meshing with the reduction gear 41a and the intermediate gear 31, a coupling 45 connecting the electric motor 41 and the drive gear 43, and a drive gear 43. It is rotatably supported and includes a drive gear pin 47 attached to a bracket portion 50 described later, and a nut 49.

The electric motor 41 is attached to a bracket portion 50 described later, receives input power from the ground via a wiring 41b, rotates, drives the drive gear 43, and
The rotator 20 is rotated via the intermediate gear 31 and the ring gear 25. The drive gear 43 includes the drive gear pin 4
7 and rotates by receiving the torque from the electric motor 41 via the key 49 a to transmit power to the intermediate gear 31.

The coupling 45 is a universal shaft coupling for connecting the electric motor 41 and the driving gear pin 47, and rotates by receiving the torque from the electric motor 41, and
To transmit power. The drive gear pin 47 has a hexagonal head 47a at one end and a stepped portion having a thick outer diameter portion 47b and a thin outer diameter portion 47c at the other end. I have.

Thick outer diameter portion 47b of drive gear pin 47
Is rotatably inserted and attached to a bracket portion 50 to be described later, the driving gear 43 is inserted pivotally, and has a clearance on a side surface of the driving gear 43 and is screwed to the nut 49. The drive gear 43 rotates by receiving a torque from the electric motor 41 via a drive gear pin 47 via a key 49. The thin outer diameter portion 47c of the drive gear pin 47 is connected to the coupling 45, and rotates by receiving the torque from the electric motor 41 via a key (not shown).

In the above configuration, the driving gear 43
Is rotated by receiving a rotational force via a coupling 45, and is rotatably inserted and attached to a bracket portion 50 described later, but is directly attached to an output shaft of the electric motor 41 and is not shown. Electric motor 4 directly via key
The rotation may be performed by receiving the rotation force from No. 1.

3 and 4, the bracket 50
Is a plate 51 disposed on the lower surface 5b side of the U-shaped main body 5, an L-shaped connection member 53 having one end surface attached to the plate 51, and attached to the other end surface of the connection member 53. And a U-shaped bracket body 55.

The plate 51 is a lower surface 5b of the main body 5 having a U-shaped plate having a predetermined width and a predetermined width.
Fixed on the upper surface of the side. The plate 51 is provided along the axis. The connecting members 53 are fixed to the lower surface at the respective distal ends of the plates 51 whose one end faces 53a are separated by a predetermined distance, and are provided orthogonal to the axis. The other end surface 53b of the connection member 53 is provided with a side plate 55 of a U-shaped bracket body 55 having an open upper side.
a is fixedly provided, and the bracket body 55 is provided orthogonal to the axis. The electric motor 41 described above is attached to the outside of the U-shaped side plate 55a via a speed reducer 41a. The intermediate gear pin 33 and the drive gear pin 47 described above are attached to the other U-shaped side plate 55c, and the intermediate gear 31, the coupling 45, A nut 49 and a drive gear 43 are provided. In the U-shaped middle plate 55b,
A hole 57 for mounting the traction tool 67 is provided. Also,
As shown in FIG. 2, the bracket body 55 is provided with a pair of mounting portions 56 projecting laterally, and a rod receiving portion 58 that engages with these mounting portions 56 with an operation rod (not shown).
Is attached, and by engaging the operation rod with the rod receiving portion 58, the tow device 1 is lifted from the ground,
The support line 113, the main line 11 from the entrance 23 of the rotating body 20
5, or through the collective drop 117, the traction device 1 can be mounted on or removed from the support line 113, the main line 115, the collective drop 117, or the like.

FIG. 5 is a plan view of the connecting portion 60, FIG. 6 is a side view, and FIG. 7 is a perspective view when the hook wire 65 is detached from the spiral hanger 119 with one touch. 1, 5, 6, and 7, the connecting portion 6
Reference numeral 0 denotes a wire ring 61 connected to the hook bracket 27 of the rotating body portion 20, a connection pin 63 having holes 63a at both ends, and rotatably connected to two divided pins 63b and 63c. , Hole 6 of connecting pin 63
3a and detachable hook wire 6
It consists of five. The hook wire 65 is connected to the female fitting portion 119b of the spiral hanger 119, and pulls the spiral hanger 119 toward the target utility pole while rotating. At this time, the hook bracket 27
Is rotated by the rotating body 21 at a position distant from the center of rotation, so that when the rotating body 21 rotates, it revolves around the center of rotation and rotates by the two divided connecting pins 63. Therefore, the spiral hanger 119 rotates without being twisted outside the support wire 113, the main wire 115, or the collective drop 117, and unites the support wire 113, the main wire 115, or the collective drop 117.

As shown in FIGS. 5, 6, and 7, the wiring 61 is made of a double-wound wire, and is inserted into the hole 63a of the connecting pin 63 from one end of the wire to be connected to the wiring 61. The pin 63 is connected. Similarly, the wiring 61 is connected to the hole 2 of the bracket 27 for the hook.
7a from one end of the wire, and the wiring 61
And the hook bracket 27 are connected.

The hook wire 65 is made of an elastic material and is directed downward from the one end 65a to a predetermined position 65b.
It is bent as a small acute angle V-shaped (locking portion) 65A which is bent and raised at the bottom. After being bent to the vicinity of the one end side, as shown in the drawing, it is bent in a horizontal direction at an angle of approximately 90 degrees. At the position 65c after being bent into an arc shape, it is returned to the position 65b of the V-shaped shape 65A in a similar arc shape. At that position, after turning upward in the figure, it is bent downward again and lowered to obtain another V-shaped (locking portion) 6 having a small acute angle.
5B, and the V-shape 65A and the other V-shape 65B are doubled at almost the same position. After being lowered to the lower predetermined position 65d while being bent in the arc shape, the upper portion is bent again at an acute angle. Thereby, both bent V-shaped shapes 65 are formed.
A and 65B are configured to overlap in a state of being shifted in the front-rear direction of the drawing sheet, and the overlapping position (V-shaped 65A, 65B) is a hole (engaging hole) of the female fitting portion 119b of the spiral hanger 119. ) 119d (shown in FIG. 7) and connected together.

In the above, when the hook wire 65 is removed from the female fitting portion 119b, as shown in FIG. 7, the hook wire 65 is bent to a lower acute angle integrally formed with the V-shaped shape 65B which is one of the locking portions. When the worker pulls the separated operation section 65d from above the ground with a pulling tool (a hook bar) or the like, V
The character shape 65B is disengaged downward from the hole 119d of the female fitting portion 119b. In addition, the V-shaped 65A
However, the hook wire 65 and the spiral hanger 119 are separated from the hole 119d of the female fitting portion 119b by a so-called one-touch operation. Thereby, the spiral hanger 119 can be easily detached from the hook wire 65 on the ground in a short time.

In FIG. 1, the towing tool 67 includes a towing hook 67a and a towing rope 6 connected to the towing hook 67a.
It consists of nine. The towing hook 67a is attached to the hole 57 of the U-shaped middle plate 55b. Tow rope 69
Is connected to the towing hook 67a and is set to a length such that the towing device 1 can be towed from the ground. As shown in FIG. 9, a towing bracket 130 is fixed to the main body 5 located inside the rotating body 21, and the connecting tool 1 attached to the tip of the towing bracket 130 is attached.
A tow rope 134 (or a newly installed cable) can be connected via 32.

In the above configuration, in order to reduce the weight of the traction device 1 as much as possible, the electric motor 41, the roller pin 15, the intermediate gear pin 33, the drive gear pin 47, the nut 49, the connecting portion 60, and the traction hook 69a is made of an iron-based material, and all other parts are made of a plastic material,
Alternatively, all products may be made of an aluminum material.
Alternatively, the gears, the coupling 45, and the rotating body 2
1 is made of a plastic material and has a U-shaped main body 3,
The bracket portion 50 may be made of an aluminum material, and may be used in an appropriate combination. Further, the rollers 13 may be made of a rubber material, and the ropes may be made of a cloth material or the like, and may be appropriately combined. Thus, the weight of the towing device 1 can be reduced, and lifting from the ground and towing are facilitated.

Next, the operation of the embodiment will be described for the case where the spiral hanger and the newly installed cable are towed simultaneously. In this embodiment, a case where three workers perform towing work will be described. First, FIG.
As shown in the figure, on the side of the pole at the point A which is the starting point of towing, the worker a places the rope 1 on the tip of the collective drop 117 which is a new cable wound around the cable drum 150
A towing end (not shown) with 52 is mounted. Worker c
Hooks the hook portion 156 of the pay-out wheel 154 on which the rope 152 is hung on the support line 113 of the existing cable 160 using an extendable operation rod 158. Next, worker a
Is the V-shaped 6 of the hook wire 65 provided in the traction device 1.
5A and 65B are engaged with the holes 119d of the female fitting portion 119b of the spiral hanger 119 to connect the spiral hanger 119 to the connecting portion 60 and
52 is connected to the connector 132. Thereafter, the worker a
The operating rod is engaged with the rod receiving portion 58 of the towing device 1 to lift the towing device 1, and the existing cable 160 is inserted into the rotating body 21 and the main body 5 from the entrance 23 and the guide 9.
Is supported by the support wire 113 of the existing cable 160. At this time, the worker c guides the spiral hanger 119 to the existing cable 160 by the hanger guide 80 as shown in FIG.

As shown in FIG. 8, the hanger guide 80 includes a pair of hooks 81 arranged in parallel with a predetermined U-shaped cross over the support wire 113 and spaced apart from each other by a predetermined distance. Connection pipe 83 for orthogonal connection and hook 8
1 and a guide rod 85 arranged below the connection pipe 83 to guide the spiral hanger 119;
It is composed of a support member 87 fixed to the connection pipe 83 and the guide rod 85. Connection pipe 83
The guide rod 85 and the guide rod 85 may be connected by bolts as shown, or may be fixed by welding. Then, the hanger guide 80 is engaged with the hook 81, and the lower end is disposed on the ground as shown in FIG. 10B.

Thereafter, the worker b turns on the hand switch (not shown) to rotate the rotating body 21 of the towing device 1, and also pulls the towing device 1 along the existing cable 160 via the towing rope 69. Move. Thereby, the spiral hanger 119 is connected to the existing cable 160.
Along with the existing cable 160 by the rotation of the rotating body 21. The rope 152 to which the collective rodop 117 is connected has a spiral hanger 119 similarly to the tow rope 134 shown in FIG.
Towed inside. Therefore, the collective drop 117, which is a new cable, can be pulled not only simultaneously with the pulling of the spiral hanger 119, but also pulled inside the spiral hanger 119, so that it is bundled with the existing cable 160 by the spiral hanger 119. .

The worker c moves to another spiral hanger 11 as the spiral hanger 119 is pulled.
9 is connected to the rear end of the preceding spiral hanger 119 using a fitting portion. The connected spiral hanger 119 is guided to the existing cable 160 along the guide rod 85 of the hanger guide 80. Accordingly, it is possible to prevent the fitting portion formed of plastic, which is a connection portion of the spiral hanger 119, having low mechanical strength from being bent and the fitting portion from being damaged.

The worker a draws out the collective drop 117 from the cable drum 150 according to the state of the pulling of the collective drop 117. Then, as shown in FIG. 10 (c), if the towing device 1 has been towed to the telephone pole at the predetermined end point B, the separating operation portion 65d of the hook wire 65 is pulled as described above. The spiral hanger 119 is separated by pulling with a tool (not shown). Thereafter, the towing device 1 is detached from the existing cable 160 by the operation rod, the collective drop 117 is towed to a predetermined position by the rope 152, and the existing cable 160
The both ends of the spiral hanger 119 wound around are fixed to the cable 160 by using predetermined fasteners.

When a branch line (not shown) is connected in the middle of the existing cable 160, the traction device 1 is once removed from the existing cable 160 just before the branch line, and the traction device 1 is installed again after passing the branch line. Cable 160
Attach to Accordingly, even when the existing cable 160 has a branch line, the spiral hanger 119 can be easily wound around the existing cable 160 by crossing the branch line, and the collective drop 11 can be formed.
7 can be passed inside the spiral hanger 119.

In the above embodiment, the spiral hanger 119 and the new drop 11
7 has been described, but only the spiral hanger 119 may be towed. Further, in the above embodiment, the case where the new cable is pulled together with the spiral hanger 119 has been described. However, when the new cable is thick and heavy, the spiral hanger 119 is used.
And the tow rope 134 are towed at the same time, and these are towed to a predetermined end. Then, a new cable is connected to the rear end of the tow rope and the new cable is towed by the tow rope 134 to the end. As a result, the new cable is pulled inside the spiral hanger 119 and is bundled with the existing cable 160. Further, in the above embodiment, the case where the traction device 1 is supported by the support wire 113 has been described. However, when the existing cable does not have the support wire, the traction device 1 may be directly supported by the cable.

[0053]

As described above, according to the spiral hanger towing method of the present invention, the main body is towed on the ground while rotating the rotating body, whereby the spiral hanger connected to the rotating body allows the main body to be rotated by the rotating body. It rotates around the supporting existing cable and is pulled along the existing cable via the rotating body as the main body is pulled. Therefore, the spiral hanger can be safely and easily wound around the existing cable by an operation from the ground.

Further, according to the present invention, since the rotating body is rotated by the gear mechanism and the motor, the labor of the operator can be reduced. If a hanger guide is provided between the existing cable and the ground to guide the spiral hanger to the existing cable, damage may be caused to the connection between the spiral hanger made of plastic having low mechanical strength. In addition, the connection (addition) of the spiral hanger can be performed safely and easily on the ground. In addition, if a branch line is connected to an existing cable, remove the towed main body from the temporary support line or existing cable before the branch line, and support the main unit again at the support line or existing cable beyond the branch line. By pulling and pulling, even when there is a branch line in the middle, the spiral hanger can be easily installed while being wound around the existing cable.

Further, according to the cable pulling method of the present invention, the new cable or the cable pulling rope is pulled together with the spiral hanger, and the inside of the spiral hanger is pulled. The new cable can easily pass through the cable and can be bundled with the existing cable.

[Brief description of the drawings]

FIG. 1 is an overall schematic side view of a traction device according to an embodiment of the present invention.

FIG. 2 is a schematic front overall view (a Z view in FIG. 1) of the traction device according to the embodiment;

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a plan view of a connecting portion according to the present invention.

FIG. 6 is a side view of the connecting portion of the present invention.

FIG. 7 is a perspective view when the hook wire of the connecting portion according to the embodiment of the present invention is removed from the spiral hanger.

FIG. 8 is a detailed explanatory diagram of the hanger guide according to the embodiment.

FIG. 9 is a diagram showing a positional relationship among an existing cable, a spiral hanger, and a cable towing rope according to the embodiment.

FIG. 10 is a diagram illustrating a method for towing a spiral hanger according to the embodiment.

FIG. 11 is an explanatory diagram for explaining a conventional spiral hanger method.

FIG. 12 is a diagram showing a spiral hanger, and (a)
Is a side view of the spiral hanger, (b) is a front view,
(C) is a partially enlarged view of FIG.

FIG. 13 is a perspective view of a leading ring used in a conventional spiral hanger method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traction device 3 U-shaped main body 5 U-shaped main body 7 Guide 9 Semicircular guide 10 Roller part 11 U-shaped bracket 13 Roller 20 Rotating body part 21 Rotating body 23 Doorway 25 Ring gear 27 Hook bracket 30 Intermediate gear part 31, 31a, 31b Intermediate gear 33 Intermediate gear pin 40 Electric motor part 41 Electric motor 41 43 Driving gear 45 Coupling 47 Driving gear pin 50 Bracket part 55 Bracket body 57 Hole 60 Connection part 61 Wiring 63 Connection pin 63b, 63c Split pin 65 Hook wire 67 Tow tool 67a Tow hook 69 Tow rope 80 Hanger guide 81 Hook 85 Guide rod 87 Guide member 111 Electric pole 113 Support line 115 Existing cable (main line) 117 New cable (collection drop) Fiber) 119 Spiral hanger

Claims (14)

[Claims] A main body rotatably supporting an inner peripheral portion of a cylindrical rotating body formed into a C shape having an entrance on a peripheral surface thereof and connected with a tip of a spiral hanger is supported by a support wire or an existing cable. And a method of towing the spiral hanger, wherein the rotating body is rotated and the main body is towed from the ground to move along the existing cable. 2. The apparatus according to claim 1, wherein the rotation of the rotator is performed by providing a gear mechanism between the main body and the rotator, and using a motor provided on the main body via the gear mechanism. The spiral hanger towing method described. 3. A hanger guide for guiding the spiral hanger to the existing cable is provided between the existing cable and the ground, and another spiral hanger is provided at a rear end of the spiral hanger on the ground as the main body is pulled. The spiral hanger traction method according to claim 1 or 2, wherein the spiral hangers are sequentially connected. 4. In the case where a branch line is connected to the existing cable, the pulled main body is temporarily removed from the support line or the existing cable before the branch line, and the support at a position beyond the branch line is provided. The spiral hanger towing method according to claim 1, wherein the main body is supported again by a wire or the existing cable, and the main body is towed. 5. A support line or an existing cable for supporting a main body rotatably supporting an inner peripheral portion of a cylindrical rotating body formed into a C-shape having an entrance port on a peripheral surface and connected to a tip of a spiral hanger. And a method of pulling a new cable to the main body, rotating the rotating body, and pulling the main body from the ground to move along the existing cable. 6. A support line or an existing cable is provided for supporting a main body rotatably supporting an inner peripheral portion of a cylindrical rotating body formed into a C shape having an entrance port on a peripheral surface and connected with a tip of a spiral hanger. And connecting the tip of a tow rope to the main body, rotating the rotating body, towing the main body from the ground and moving it along the existing cable to a predetermined end, and thereafter, A cable pulling method, comprising connecting a new cable to an end and pulling the new cable via a pulling rope. 7. The rotation of the rotator is provided by providing a gear mechanism between the main body and the rotator, and is performed by the motor provided on the main body through the gear mechanism. 7. The cable pulling method according to 6. 8. A hanger guide for guiding the spiral hanger to the existing cable is provided between the existing cable and the ground, and another spiral hanger is provided at a rear end of the spiral hanger on the ground as the main body is pulled. The cable pulling method according to any one of claims 5 to 7, wherein the cables are sequentially connected. 9. In the case where a branch line is connected to the existing cable, the towed main body is temporarily removed from the support line or the existing cable before the branch line, and the support at a position beyond the branch line is removed. 9. The method according to claim 5, wherein the main body is supported again by a wire or the existing cable, and the main body is towed. 10. A C-shaped cylindrical rotator having a main body supported by a support wire or an existing cable, an inner peripheral portion rotatably supported by the main body, and an inlet / outlet on a peripheral surface.
A connecting portion of a spiral hanger provided on the cylindrical body, a gear mechanism provided between the main body and the rotating body, and a motor provided on the main body and configured to rotationally drive the rotating body via the gear mechanism. A traction device attached to the main body, the traction device being capable of towing the main body from the ground along the existing cable. 11. The main body has a plurality of rollers that rotatably support the rotating body, and a distance between contact points of adjacent rollers with the rotating body is larger than a width of the entrance. A traction device according to claim 10. 12. The gear mechanism includes a ring gear provided on an outer peripheral surface of the rotating body, a pair of intermediate gears meshing with the ring gear, and a drive gear attached to the motor and meshing with the pair of intermediate gears. The distance between the meshing points of the pair of intermediate gears with the ring gear is larger than the width of the entrance.
Or a traction device according to item 11. 13. The connecting portion is formed of an elastic body,
A pair of openable and closable locking portions that can be inserted into an engagement hole provided at a tip portion of the spiral hanger, and at least one of the locking portions, a force is applied from the ground to apply the locking portion to the locking portion. 13. The device according to claim 10, further comprising a separation operation portion for detaching from the engagement hole.
The traction device according to item 1. 14. The traction device according to claim 10, wherein the main body has a traction rope for traction of the new cable or a connection portion capable of connecting the new cable.