JPH10224928A - Overhead cable additional installation method and installing hanger for the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To limit the installation work to a replacement work to existing hangers riding on a gondola only by a method wherein installing hangers which have hanger rollers through which a pulling rope to which a cable to be installed additionally is connected is inserted are hung on an existing suspension wire by an operation pole from the ground. SOLUTION: An existing suspension wire 1 is installed between poles and an existing cable 3 are hung from the wire 1 with existing cable hangers 2. On the other hand, installing hangers 23 which have hanger rollers 5 through which a pulling rope 4 to which a cable to be installed additionally is connected is inserted are hung on the existing suspension wire 1 by an operation pole from the ground. The installing hangers 23 have annular elements 12 which have opening holes and from which supporters 13 having the hanger rollers 5 through which the pulling rope 4 to which the cable to be installed additionally is connected is inserted are hung. With this constitution, the installation work can be limited to a replacement work to the existing cable hangers 2 only, so that the operation time for the cable installation can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerial cable extension method and a construction hanger used for the method, and more particularly to an extension of an existing cable which is installed on an existing suspension wire via an existing cable hanger. The overhead cable extension method and the construction hanger used for this method.

[0002]

2. Description of the Related Art As a conventional technique of this kind, for example, FIG.
And those shown in FIG. An existing cable hanger 1 is attached to an existing suspension wire 101 installed between telephone poles.
The existing cable 103 is suspended via the cable 02. Recently, there has been a tendency to add cables such as optical fibers. However, new cables are added in a bundle in parallel with and in contact with existing cables.

[0003] To form a bundle, the hanger roller 10 is passed through a drawing rope 104 connected to a cable to be added.
5 is suspended from the existing suspension wire 102. This is called rope extension work. This rope extension
An operator rides on a suspended vehicle suspended on the existing suspension wire 101 to perform work. Alternatively, the rope extension may be performed by a worker riding a bucket truck.

[0004]

When the rope is extended on a spacecraft, it is necessary to cross the low-voltage line and drop-in line while crossing the existing cable, which is dangerous.
The degree of fatigue was high and it took time. Therefore, by attaching the construction hanger from the ground, it is possible to limit the operation to only the work of mounting on a spacecraft and replacing the existing hanger.

[0005] Further, when a rope is extended using a bucket car, the rope may not be used depending on traffic or road conditions.

[0006]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention has been made to provide a safe, low-fatigue, and short-time work through an existing cable hanger via an existing suspension wire. In the aerial cable extension method to bundle cables with existing cables that have been
An aerial cable extension method was adopted in which a construction hanger equipped with a hanger roller through a drawing rope connected to the cable to be added was hung from the ground to an existing suspension wire using a pole.

[0007] In addition, the present invention suspends a support provided with a hanger roller through a drawing rope connected to an additional cable to an annular body having an opening on the side so as to enable work from the ground. A work hanger having an engagement piece supported and engaged with a receiving member at the tip of a pole having a length reaching the existing suspension wire from the ground is provided on the annular body.

Further, in order to improve the workability of the construction hanger, the present invention further comprises an opening piece for closing the opening by being urged by a spring, and a guide for guiding the existing suspension wire to the opening is provided near the upper portion of the opening of the annular body. And a construction hanger. Furthermore, the present invention provides a construction in which the rotation of the construction hanger is stopped so that the support is parallel to the existing cable and the rope for drawing is not entangled with a round bar to form a triangular frame. Hanger.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to specific embodiments shown in FIGS.
An existing suspension wire 1 is installed between utility poles, and an existing cable 3 is suspended from the existing suspension wire 1 via an existing cable hanger 2.

A construction hanger 23 provided with a hanger roller 5 through a draw rope 4 to which a cable to be added is connected is hung from the ground to the existing suspension wire 1 by a pole 6. As shown in FIG. 2, the construction hanger 23 suspends the support body 13 having the hanger roller 5 through the drawing rope 4 to which the additional cable is connected, on the annular body 12 having the opening 11.

A hexagonal engagement piece 15 is fixed to the side of the annular body 12 facing the opening 11 by welding. The length of the insulator F that reaches the ring body 12 from the ground to the existing suspension wire 1
The bent round bar 21 is inserted into the tip of the pole 6 formed of RP, and the receiving member 14 having a hexagonal hole shown in FIG. Insert rod 3 at the lower end of bent round bar 21
1 is screwed, and a positioning pin 33 urged by a coil spring 32 in the horizontal direction is provided at the center of the insertion rod 31.

A guide cylinder 34 is fitted and fixed to the upper end of the pole 6, and a positioning hole 35 is formed in the center of the guide cylinder 34 so as to fit with the positioning pin 33. At the lower end of the pole 6, a wire support leg 36 is pivotably mounted. The annular body 12 and the support body 13 are each formed by a round bar, and the support body 13 is formed in a triangular frame shape so that the abutment wire 1 can easily enter the annular body 12 by contacting the side of the existing cable 3. The annular body 12 is inserted into the top of the support 13, and the horizontal support rod 16 is fixed by welding so that the annular body 12 does not fall downward.

The annular body 12 has an opening 11 with a mustache spring 17.
A guide 18 made of a round bar for guiding the existing hanging wire 1 to the opening 11
It is provided obliquely near the upper part of the opening 11. The opening and closing piece 1
Numeral 8 pivotally connects the lower end thereof, and urges the opening / closing piece 18 by closing the opening 11 with a mustache spring 17 wound around the pivoting pin 20.

Further, when the worker works from the ground and tries to hook the opening 11 of the annular body 12 on the existing hanging wire 1, the support 13 is in the eyes of the worker, so that the work is difficult. 6, a hook 22 shown in FIG. 6 is fixed to the vertical portion of the bent round bar 21 by welding in order to tilt the support 13 so as not to be in the way. As shown in FIG. 1, a hanger roller 5 is attached to the support 13, and the rope 4 is inserted through the hanger roller 5.

The rope 4 is inserted through the hanger roller 5,
After attaching the hanger roller 5 to the support 13, the engaging piece 15 of the construction hanger 23 is engaged with the receiving member 14 of the bent round bar 21 inserted into the tip of the pole 6 with one touch, and the support 13 is hooked. The worker hooks on the metal fitting 22 and guides the existing suspension wire 1 from the opening 11 into the annular body 12 while guiding the existing suspension wire 1 from the ground with the guide 19. The existing suspension wire 1 enters the annular body 12 with the opening / closing piece 18 located at the opening 11 against the urging force of the mustache spring 17.

The same work as described above is carried out at about four locations between the utility poles at about four places, and the respective ropes 4 are connected to each other, and added to one end of the connected ropes 4. Connect the cables. When the other end of the connected drawing rope 4 is pulled, the cable to be added is located inside the hanger roller 5, and the extension of the additional cable is completed.

When the extension cable has been extended, the worker rides in the air, removes the extension cable suspended from the hanger roller 5 from the hanger roller 5, replaces the existing cable hanger 2, and supports the existing cable hanger 2. And made into one bundle. At the same time, the construction hanger 23 is removed.

[0018]

As described above, according to the present invention, an additional cable is provided in an aerial cable extension method in which an existing cable laid via an existing cable hanger is bundled with an existing suspension wire, and the cable is added. This is an aerial cable extension method that uses a pole to hang a construction hanger equipped with a hanger roller that passes through a rope from the ground to an existing suspension wire. The work time is about one fifth of the conventional work time, and the work time can be reduced.

Further, according to the present invention, a support provided with a hanger roller through which a rope to which an additional cable is connected is suspended from an annular body having an opening on the side, and the annular body is connected to the existing suspension wire from the ground. Since the construction hanger is provided with an engagement piece supported and engaged by the receiving member at the tip of the pole of a reachable length, work from the ground is made possible and safety is achieved.

Further, the present invention provides a construction hanger having an opening piece for closing the opening by being urged by a spring, and providing a guide for leading the existing suspension wire to the opening near the upper portion of the opening of the annular body. Improve workability of construction hanger. Furthermore, according to the present invention, since the support is a construction hanger formed in a triangular frame shape with a round bar, the support is guided by the existing cable to facilitate the work.

[Brief description of the drawings]

FIG. 1 is a front view illustrating a specific operation of an aerial cable extension method according to an embodiment of the present invention.

FIG. 2 is a side view of a construction hanger according to one embodiment of the present invention.

FIG. 3 is a front view of a support.

FIG. 4 is a plan view of a support.

FIG. 5 is a plan view of an engagement piece.

FIG. 6 is a front view of a hook.

FIG. 7 is a front view illustrating a conventional overhead cable extension method.

FIG. 8 is a side view of the hanger roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Existing suspension wire 2 ... Existing cable hanger 3 ... Existing cable 4 ... Drawing rope 5 ... Hanger roller 6 ... Paul 7 ... Opening and closing piece 11 ... Opening 12 ... Circular body 13 ... Support body 14 ... Receiving member 15 ... Engagement Piece 17 ... beard spring 18 ... opening / closing piece 19 ... guide 21 ... bending round bar 22 ... hook metal fitting 23 ... construction hanger 31 ... insertion rod 32 ... coil spring 33 ... positioning pin 34 ... guide cylinder 35 ... positioning hole 36 ... support leg

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Zun Asakawa 1-15-16 Kitaoji, Otsu City Kanto Information System Co., Ltd.

Claims (4)

[Claims] 1. An aerial cable extension construction method in which an extension cable is bundled with an existing cable constructed via an existing cable hanger on an established suspension wire, and a hanger roller passing through a rope connecting the extension cable. An overhead cable extension method in which a construction hanger equipped with a cable is hung from the ground to the existing suspension wire using a pole. 2. A support having a hanger roller passing through a rope connected to an additional cable is suspended from an annular body having an opening on a side, and the annular body has a length reaching the existing suspension wire from the ground. A construction hanger having an engagement piece supported and engaged by a receiving member at a tip of a pole. 3. The construction hanger according to claim 2, further comprising an opening piece which closes the opening by being urged by a spring, and a guide for guiding an existing suspension wire to the opening is provided near an upper portion of the opening of the annular body. 4. The construction hanger according to claim 2, wherein the support is formed in a triangular frame shape with a round bar.