JPH0477529B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for attaching to power transmission and distribution lines or overhead ground wires,
In order to prevent flashovers or feces damage caused by birds stopping and touching live parts,
This invention relates to a bird damage prevention device for electric wires, etc., which protects electric wires from being damaged due to contact with trees such as roadside trees.

[Conventional technology]

Traditionally, cylindrical protective covers have been used for this purpose, and these conventional covers have many protrusions and thorns on the outer surface of the cylindrical body, making it difficult for birds to access. It makes it difficult to grasp.

[Problem to be solved by the invention]

However, with these types of protrusions and protrusions on the surface, these protrusions and protrusions get in the way when attached to electric wires, making it difficult to work with.Furthermore, when attached to an electric wire, it is fixed without rotating. However, once the birds stopped, they could continue to stay stable without wobbling, and the effect of preventing bird damage was insufficient.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention includes a pair of left and right supports each having a through hole in the center, and two supports arranged at intervals along the periphery of the supports, with both ends connected to two supports. To provide a bird damage prevention device for electric wires, etc., which is composed of a plurality of bars fixedly attached to each other, and is rotatably attached to the outer periphery of the electric wires, etc. by loosely fitting the electric wires, etc. into the through holes of the support. It is something to do.

[Effect]

Birds that try to land on the wire will try to land on the bar of the bird deterrent because the wire is covered with the bird deterrent.

However, since the bird damage prevention device is rotatably attached to the electric wire, it is in a very unstable state.

Therefore, when the bird's weight is applied to the bar, the bird preventer rotates and prevents the bird from standing still.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1 and 1' are hexagonal in plan as shown in FIGS. 4 and 7, and the ends of bars 2, 2... are fixed to each corner, so that a total of six bars 2 are arranged equally with each other. They are a pair of left and right plate-shaped supports that are supported at a distance. The size of each hexagonal side of these supports 1, 1' is set so that the distance between adjacent bars 2, 2 is such that a bird cannot straddle them with their toes and grasp them at the same time. These supports 1 and 1' are formed with a through hole 3 in the center into which the electric wire W is loosely fitted, and retaining rings 3a and 3a' are fitted on the inner peripheral surface of the through hole 3, and further. , supports 1, 1' and retaining rings 3a, 3a' are divided into halves 1a, 1b, 1a', 1 by the vertical center line.
b', and the upper sides of the supports 1, 1' are connected by a hinge 4 to make both halves 1a, 1b, 1a', 1b' freely openable and closable.
Install a and 5b.

The retaining rings 3a, 3a' are provided with connecting portions 6a and 6b projecting from their outer surfaces, respectively, which form a female type and a male type, and as shown in FIG.
A is a female type, and the connecting part 6 on the support 1' side (right side)
b is a male type, and an outer flange 7b is protruded from the tip of the male type connecting part 6b, and a recessed chamber 7a into which the outer flange is loosely fitted is formed in the female type connecting part 6a.

Furthermore, these retaining rings 3a, 3a' and the connecting part 6
a and 6b are made of a material with a low coefficient of friction, such as polyacetal resin or tetrafluoroethylene resin, and the male and female connecting portions 6a and 6b are engaged with each other with appropriate play so as to be easily slidable. Efforts have been made to do so.

On the other hand, the closures 5a, 5b attached to the lower sides of the supports 1, 1' are attached to the outside of the half bodies 1b, 1b' of the supports 1, 1', as shown in FIG.
Also, a closure 5b is pivotally attached to the inside of the half bodies 1b, 1b' with screws 8. One closure 5a has the other half 1 on one side of the flat plate.
A, 1a' is provided with a protrusion 11 that fits into the blind hole 9 provided, and the other closure 5b has a knob piece 13 at its tip.
At the same time, an engaging recess 15 is provided in the intermediate portion to ride on a protruding pin 14 protruding from the inner surface of the half bodies 1a, 1a'.

Next, the bird damage preventer A (hereinafter referred to as
It is simply described as a preventer. ). First, the engagement recess 15 of the closure 5b and the protruding pin 14 are disengaged to make the closure 5b free, and the half bodies 1a, 1a' are pushed in the axial direction (in the direction of the arrow in FIG. 8) to open the blind hole. The protrusion 11 fitted in the hole 9 is removed from the blind hole 9 to free the closure 5a, and the half bodies 1a, 1a', 1b, 1b' are moved around the hinge 4 as shown by the chain line in Fig. 7. The left and right halves 1a and 1b are expanded, and the electric wire W is inserted through the expanded portion and attached to the installed electric wire W, and the left and right halves 1a and 1b are expanded.
1a' and 1b' are closed, respectively, and the electric wire W is loosely fitted into the retaining rings 3a, 3a'. And the protrusion 1 of the closure 5a
1 into the blind hole 9, and then insert the knob piece 1 of the closure 5b.
3 to lock the engaging recess 15 and the protruding pin 14, and fix the half bodies 1a and 1b and the half bodies 1a' and 1b' together.

Next, if necessary, attach a second preventer A' to the wire W on the right side of the preventer A in accordance with the handling procedure for the preventer A. At this time, as shown in FIG. The female type concave chamber 7a at the left end of A' is connected to the preventer A.
from the outside of the male outer flange 7b at the right end of the flange 7b. This articulated preventer
By installing the third and subsequent preventers on the right side of A' in the same manner as the second preventer A', the electric wire W Can be installed on.

FIG. 11 shows another embodiment of the structure of the closures 5a, 5b, in which the blind holes 9 of the half bodies 1a and 1a' of each support 1, 1' are
is the through hole 16, and the protrusion 11 of the closure 5a
is extended to form a shaft-like projection 17. The protruding portion of the shaft-like projection 17 is adapted to engage the engagement recess 15 of the closure 5b. This embodiment has a longer axial protrusion 17 than the one in which the short protrusion 11 of the previous embodiment is fitted into the blind hole 9.
Although the workability is slightly deteriorated because the holder has to be fitted into the through hole 16, once the holder is engaged, it is difficult to come off and it can be continued to be used in a more stable state.

〔Effect of the invention〕

As described above, the bird damage preventer for electric wires, etc. of the present invention is rotatably attached to the wire, so when a bird tries to take a break and grabs onto the bar, the bird's weight causes the preventer to rotate. The bird becomes unstable and unable to stay upright and rest. Therefore, flashing and dropping damage can be prevented. And since there are no protrusions or protrusions on the surface of preventer A,
Installation work can be done safely and quickly. Furthermore, since the electric wires are surrounded and protected by the bars, there is an advantage that the electric wire sheathing can be prevented from being damaged due to contact with trees.

[Brief explanation of drawings]

The figures relate to one embodiment of the present invention, and Fig. 1 is a perspective view, Fig. 2 is a plan view, Fig. 3 is a front view, Fig. 4 is a side view, and Fig. 5 is an X of Fig. 4. - an X-line sectional view, FIG. 6 is a Y-Y sectional view of FIG. 3, FIG. 7 is a Z-Z sectional view of FIG. 3, and FIG. 8 is an enlarged sectional view mainly showing the closure; Figure 9 is a perspective view of the state in use;
Fig. 10 is an enlarged sectional view centered on the connecting part;
FIG. 1 is a partial sectional view of another embodiment mainly showing the closure. 1,1'...Support, 2,2...Bar, 3...
Through hole, A... Bird damage prevention device, W... Electric wire.

Claims (1)

[Scope of Claims] 1. A pair of left and right supports each having a through hole in the center, which are arranged along the periphery of the supports at a distance from each other, and have both ends fixed to the two supports, respectively. 1. A device for preventing bird damage for electric wires, etc., comprising a plurality of bars consisting of a plurality of bars, and is rotatably attached to the outer periphery of the electric wires, etc. by loosely fitting the electric wires, etc. into the through holes of the support.