JPS5843387Y2 - Draw wire fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a down wire fixing device for pulling out a down wire from a high voltage or special high voltage overhead insulated wire.

Conventionally, when pulling out a down line from an overhead insulated wire, the down line was fixed to a pin insulator fixed to a cross arm using a bind wire.

For this reason, armrests and pin insulators were required, and the pillars were congested.

In addition, with this method of fixing down-line wires, it is inappropriate to use a live wire operating rod when fixing the down-line wires, so in cases of extra high voltage that requires work with a live wire operating rod, the work cannot be done. There were flaws that made it almost impossible.

An object of the present invention is to provide a down-line fixing device having a structure that can shorten working time and allow safe work even when working on live lines.

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, the pull-down line fixing device 1 of this embodiment includes a main line and pull-down line gripping tool 2, and a pair of bind wires 3, 3 each having one end fixed to the gripping tool 2. ' and a cushioning material 4 that protects the pull-down line within the gripper 2.

The gripping tool 2 is manufactured to have a substantially U-shape, and a pull-down line gripping portion 2A is formed at the folded portion of the U-shape, and a main line gripping portion 2B is formed above the pull-down line gripping portion 2A with an arc-shaped bulge. , Furthermore, a part of the main line grip part 2B is opened and a main line insertion port 2C is inserted.
has been established.

The opening width of the main line gripping part 2B in this main line insertion port 2C is set to a width such that the main line accommodated in the main line gripping part 2B does not come out.

Such a gripping tool 2 is made of elastic plastic (for example, hard polyethylene) or metal, and the inner diameter of the main line gripping part 2B is equal to or slightly smaller than the diameter of the main line, and the main line difference is The inlet 2C has an opening of approximately 50° on the outside, is shaped so that the main line can be inserted from the side, and is designed to withstand the weight of the downline after insertion.

Main line insertion port 2 formed by opening a part of main line grip part 2B
Even if the width of C is narrower than the diameter of the main wire, there is no problem because the gripping tool 2 is made of an elastic material and the main wire will push it wider when the main wire is inserted.

The binding wire 3゜3' is made of, for example, annealed copper wire, and each tip is provided with a hook insertion ring portion 3a+3a' for inserting the hook of a live wire operating rod, so that the hook of the live wire operating rod can be inserted during live wire work. It takes 5K to put into these ring parts 3a, 3a'.

Such a binding wire 3,3' may be a bare wire, but in some cases, it may be insulated with an insulating material such as plastic so that the cross section is circular or rectangular.

The cushioning material 4 is made of, for example, ethylene propylene rubber in the shape of a sleeve, and a sling 4a is provided at one location so that it can be inserted even from the middle of the pull-down line.

Such a cushioning material 4 can be used after the fixing device is attached.
This cushioning material 4 is intended to prevent the vibration of the pull-down wire and the force due to its own weight from concentrating on the end of the gripping tool 2, and to prevent damage to the pull-down wire.
may be omitted.

FIGS. 3 and 4 show how the above-mentioned down-line fixing device 1 is used.

As shown in the figure, a cross arm 6 is fixed near the upper end of the utility pole 5, and an overhead main line 8 is supported on this cross arm 6 via a support insulator 7.

A branch terminal 9 electrically connected to the main line 8 is provided on the top of the support insulator 7, and the down line 1 is connected to the branch terminal 9.
0 connector 11 is connected.

The pull-down wire 10 is passed through the cushion material 4 and attached to the gripping tool 2.
It is held by the pull-down line holding part 2A.

There are two ways to insert the drop-down line 10 into the drop-down line gripping part 2A: one is to insert it through the insertion port 2C, and the other is to insert the drop-down line 10 directly through the two pull-down line grips.

The gripping tool 2 grips the main line 8 with its main line gripping portion 2B and is supported by the main line 8.

Binding lines 3, . 3' is wound around the main wire 8 and the cushion material 4, and the bind wires 3 and 3' are twisted and fixed together.

The down line 10 is connected to a pole transformer 13 via a cutout (transformer overcurrent protection means) 12 .

Next, an example of the work procedure for attaching this down line fixing device 1 to the 22 KV main line 8 by live line work is shown in Figures 5A-D and 1.
This will be explained with reference to FIGS. 4 to 4.

As shown in FIG. 5A, a cushion material 4 is fitted into a portion slightly away from the tip of the pull-down line 10, and this cushion material 4 is held by the pull-line gripping part 2A of the gripping tool 2, and this fixing device 1 is attached to the pull-down line. Install it on 10.

The fixing device 1 thus constructed is held at the tip of a live-wire operating rod 14 for temporary fixing of the fixing device, and the connector 11 at the tip of the pull-down wire 10 is held at the tip of a live-wire operating rod 15 for connector.

Next, as shown in FIG. 5B, the connector 11 is fitted and connected to the branch terminal 9 of the support insulator 7 using the live connector operating rod 15.
In addition, the holding tool 2 of the fixing device 1 is fitted into the main line 8 from its insertion port 2C using the live wire operating rod 14 for temporarily fixing the fixing device.
Temporarily fasten to main line 8.

After that, as shown in FIG.
.

3a', wrap the bind wires 3, 3' across the main line 8 and the cushion material 4 as shown in FIG.
Twist the binding wires 3, 3' through the fixing device 1
is firmly fixed to the main line 8 as shown in Fig. 5 and Fig. 3.

As explained above, the pull line fixing device of the present invention fixes the pull line to the main line, so there is no need for arms, etc., making the pole more beautiful, and making it easier for workers to ascend and descend the pole. There are advantages such as:

In addition, with this fixing device, it is only necessary to fit a gripping tool having a main line insertion port onto the main line and fix it with a binding wire, and the binding wire has a hole at the end for inserting the hook of the live wire operating rod. It has a ring part for hook insertion, and the binding work can be performed by inserting the hook of the live wire operating rod into this ring part, so it is easy to install the down line in the live wire state by operating the live wire operating rod even at particularly high pressure. Able to perform work.

Therefore, it is possible to add more transformers without causing a power outage to the main line.

Furthermore, in the present invention, since the gripping tool is temporarily fixed to the main line, the fixing work can be easily performed without being affected by the weight of the pull-down line, and the workability is very high.

[Brief explanation of drawings]

1 and 2 are front and side views showing one embodiment of the fixing device according to the present invention, FIG. 3 is a side view showing the fixing device attached to the main line, and FIG. 4 is a front view and a side view showing an embodiment of the fixing device according to the present invention. FIGS. 5A to 5D, which are perspective views of the fixing device in use, are explanatory diagrams showing the work procedure for attaching the fixing device according to the present invention to the main line in a live state. 2A...Drop line gripping part, 2B...Main line gripping part, 2C...Main line insertion port f, 3, 3'・
・・・・・・Binding line, 3at3a' ・・・・・・
Ring part for hook insertion.

Claims (1)

[Scope of utility model registration request] A main line gripping part that grips the main line, a main line insertion opening formed by opening a part of the main line gripping part with a width that does not allow the main line gripped by the main line gripping part to come out, and a main line insertion opening adjacent to the main line gripping part. A main wire and a pull-down wire gripping tool made of an elastic material having a formed pull-down wire gripping part, and a binding wire for fixing the gripping tool to the main wire, and a live wire operating rod is provided at an end of the binding wire. A pull-down line fixing device in which a hook insertion ring portion for inserting a hook is formed.