JPS6338660Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an insulator arm that is attached to cross the projecting arm.

When passing overhead wires between utility poles erected along a road, if the angle formed between one wire section and the other wire section that sandwich the poles is small,
It is required that the above electric wires be supported by utility poles at two locations.

Conventionally, a method has been adopted in which two projecting arms are attached to a telephone pole, the arms are arranged in parallel, and the electric wire is supported by an insulator supported by each arm. In such a wire support device that uses two projecting arms, a tightening band cannot be used to attach the arms, so the arm attachment work is more difficult than when attaching an arm using a tightening band. Moreover, there is a drawback that the support of the arm is unstable and the electric wire cannot be stably supported.

Therefore, the object of this invention is to provide an insulator arm that can easily carry out the wire drawing work that requires supporting the wire at two points relative to the utility pole, and can also stably support the wire. The purpose is

The configuration of this invention will be explained below based on the attached drawings.

As shown in the figure, the insulator arm according to this invention consists of a pair of arm bodies 1 and 1'. The arm main body 1 has a pair of flanges 3 formed on both sides of a web 2 to have a U-shaped cross section.
A bolt insertion hole 4 is formed in the center of the hole.
Furthermore, a pair of insulator shaft insertion holes 5 are provided at both ends of the web 2 at positions equally spaced apart from the bolt insertion holes 4.

On the inner side of the web 2 of one arm body 1,
Short tubes 6 and 6' are provided concentrically with each insulator shaft insertion hole 5, and a long tube 7 is provided concentrically with each insulator shaft insertion hole 5 on the inner surface of the web 2 of the other arm body 1'. ，
7' is formed. The outer diameter of one of the short tubes 6 and one of the long tubes 7 is the same, and the inner diameter is formed to a size that allows the end of the other long tube 7' and the other short tube 6' to be inserted. There is.

A trapezoidal notch 8 is formed in the center of the side edge of the flange 3 of each arm body 1, and when a part of the projecting arm is fitted into the notch 8, the outer periphery of the projecting arm is formed on both sides of the notch 8. A portion of the edge is adapted to engage.

The insulator arm shown in the embodiment has the above-mentioned structure, and as shown in FIG. 1, this insulator arm is attached to the tip of a projecting arm 11 attached to a telephone pole 10 so as to intersect therewith.

Here, the projecting arm 11 is connected to the tightening band 1
The arm 1 is attached to the utility pole 10 via the arm 2.
Support arm 13 diagonally passed between 1 and utility pole 10
The central part is supported.

There are two types of end face shapes of the projecting arm 11, circular and square, and in the case of the embodiment, a circular projecting arm 11 is shown. Also,
There are two types of circular projecting arms 11 having different outer diameter dimensions, and FIG. 2 shows a small diameter projecting arm 11.

Now, as shown in FIGS. 1 and 2, a pair of arm bodies 1 and 1' are arranged vertically in parallel so as to sandwich the tip of the thrust arm 11, and are crossed with respect to the thrust arm 11. , the large-diameter short tube 6 of one arm body 1 and the small-diameter long tube 7' of the other arm body 1' are opposed to each other, and the outside of the arm 11 is inserted into the notch 8 of each arm body 1, 1'. When the circumferential portions are fitted, the tip of the small-diameter long tube 7' fits inside the large-diameter short tube 6, and the small-diameter short tube 6' fits inside the large-diameter long tube 7. .

In such a state, one arm body 1
Insert the bolt 14 through the insertion hole 4 of the arm 11, insert this bolt 14 into the hole 15 provided in the spear arm 11, insert it into the insertion hole 4 of the other arm body 1', and protrude from the insertion hole 4. 1 nut on the end
6 and tighten it, the projecting arm 1
The pair of arm bodies 1, 1' can be fixed to the projecting arm 11, and the pair of arm bodies 1, 1' can be made to intersect with the projecting arm 11.

With the arm bodies 1, 1' mounted in this manner, insert the insulator shaft into the insulator shaft insertion holes 5 at both ends of the arm bodies 1, 1', and insert the ends of the shaft into the other arm body 1'. Insulators can be attached to both ends of the arm bodies 1, 1' by protruding from the insertion holes 5 and screwing in nuts, and the electric wires drawn into the utility pole 10 can be supported by each insulator.

As shown in FIGS. 3 and 4, the short tube 6 on the large diameter side of one arm body 1, 1' is brought into contact with the tip of the long tube 7 on the large diameter side of the other arm body 1'. Since the distance between the opposing webs 2 of the pair of arm bodies 1, 1' is wider than in the case of FIG. Can be fixed.

As described above, this invention enables a pair of arm bodies to be attached at both ends of the arm body by a simple installation process of fixing a pair of arm bodies with bolts and nuts to a projecting arm attached to a telephone pole and crossing the projecting arm. Since the insulator can be supported, the wire lead-in work, which requires supporting the wire at two locations relative to the utility pole, is easier than in the conventional method. In addition, the arm body is attached by fitting a part of the outer periphery of the projecting arm into the notch formed in the flange of the arm body, so it can be firmly attached to the projecting arm, and the arm body The distance between the pair of arm bodies facing each other can be regulated by fitting or butting the short tube and the long tube provided at both ends.
The insulator can be firmly attached to the arm body, and the electric wire can be stably supported.

In addition, by fitting a short tube formed on one arm body with a long tube formed on the other arm body, or by butting a short tube and a long tube with the same outer diameter, it is possible to Since the opposing distance can be regulated in two ways, the arm main body can be stably and firmly attached to each of the two types of projecting arms having different outer diameters.

[Brief explanation of the drawing]

Figure 1 is a front view showing how the insulator arm is attached according to this invention, Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is another example of how the insulator arm is attached. The side view, FIG. 4, is a front view of FIG. 1, 1'...Arm body, 2...Web, 3...
...Flange, 4...Bolt insertion hole, 5...Insulator shaft insertion hole, 6, 6'...Short tube, 7,7'...Long tube, 8
...notch.

Claims (1)

[Scope of utility model registration request] It consists of a pair of arm bodies that intersect with a projecting arm attached to a telephone pole, and this arm has flanges on both sides of the web to have a U-shaped cross section, and a bolt insertion hole is formed in the center of the web. A pair of insulator shaft insertion holes are formed at equal distances from the bolt insertion hole on both sides sandwiching this bolt insertion hole, while a pair of insulator shaft insertion holes are formed on the inner side of the web of the arm body and are concentric with each insulator shaft insertion hole. A short tube is installed in the
On the other hand, a long tube is provided on the inner surface of the web of the arm body concentrically with each insulator shaft insertion hole, and the outer diameter of one of the short tubes and one of the long tubes is the same, and the other long tube is installed inside the long tube. and a trapezoidal notch into which a part of the outer periphery of the projecting arm can be fitted is provided at the center of the side edge of the flange of each arm main body. An insulator arm for installing a projecting arm.