JPH0452358Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a utility pole cap for covering the top of a reinforced concrete utility pole above a live wire.

[Conventional technology]

Conventionally, concrete utility poles were formed using the centrifugal forming method, with a concrete disc-shaped finishing member attached to the top of the pole and the surrounding area hardened with mortar. Concrete utility poles formed in this way were erected to distribute electricity to businesses such as factories and hospitals, as well as to individual homes, but over a long period of time, the poles, especially around the disk-shaped finished member, were fixed. The exposed mortar is exposed to strong direct sunlight in the summer, and in the winter it freezes in the wind and eventually develops microscopic cracks. Rainwater seeps into this crack, or even freezes, increasing its volume and greatly expanding the crack.
Finally, cracked pieces the size of pebbles are generated. The broken pieces could sometimes be blown by the wind and fall from the top of the pole, potentially damaging cars parked below.

〔the purpose〕

The present invention was devised in view of these problems, and its purpose is to provide a utility pole cap that can be attached to the top of the utility pole to prevent broken pieces from falling from the top of the utility pole. .

[Means to solve the problem]

In order to solve the problems of the prior art described above, the present invention provides a plurality of inclined protrusions 3 on the inner peripheral surface of the cap body 2 to be attached to the top of the utility pole 1, which are inclined with respect to the lower opening edge 5. The opening side end of the inclined protrusion 3 is cut off in a tapered shape so as to become gradually lower as it approaches the lower opening edge 5, and a horizontal protrusion is formed between the inclined protrusions 3 almost parallel to the lower opening 5. 4 is installed protrudingly.

; is adopted as a technical means.

[Operation] A worker climbs to near the top of the existing utility pole 1,
Alternatively, approach near the top using a ladder truck, attach the top of the utility pole cap A made of a material such as synthetic resin to the cap suction cup 6 of the installation tool B, lift the operating rod 7, and attach the utility pole cap A to the utility pole 1.
Place it over the top of your head from above and pull down the operating rod 7 to fit it.

At this time, attach the utility pole cap A to the cap suction cup 6.
and the cap holding body 8 are pressed against each other to fit the cap.

When the utility pole cap A has been fully inserted into the top of the utility pole 1, the operation rod 7 is lifted up and the utility pole cap A is pressed against the top of the utility pole 1 using the cap holding body 8 as a fulcrum while being used as a lever. The action causes the cap suction cup 6 to be peeled off from the utility pole cap A.

Thereby, the installation is completed leaving the utility pole cap A at the top of the utility pole 1.

〔Example〕

Hereinafter, embodiments of the utility pole cap installation tool of the present invention will be described based on the drawings.

As shown in FIGS. 1 to 3, the cap main body 2 has a bowl-like shape with an open bottom, and an inclined protrusion 3 is provided on the lower half of the inner circumferential surface of the cap body 2 so as to project downwardly toward the bottom opening edge 5. is provided with multiple protrusions. In this embodiment, although the present invention is not limited to this, a plurality of sets of three wires are provided protrudingly. The opening side end of the inclined protrusion 3 is cut off in a tapered shape, and is formed to become gradually lower as it approaches the lower opening edge 5. Further, near the lower opening edge 5, a horizontal protrusion 4 is provided protruding along the lower opening edge 5.
Although the horizontal protrusions 4 are formed between the inclined protrusions 3, they are not connected to the inclined protrusions 3 and are independent from each other. The top outer surface of the cap body 2 is a flat surface so that it can be sucked. The entire utility pole cap A is a molded product of relatively soft resin, such as low-density polyethylene with excellent weather resistance. A disk-shaped finishing member 9 is fitted into the top of the utility pole 1, and its periphery is hardened with a mortar portion 10. 11 is a reinforcing bar protruding from the top of the utility pole 1, and 12 is mortar for closing the reinforcing bar hole.

Therefore, the worker climbs close to the top of the existing utility pole 1 or approaches near the top using a ladder truck.
The outer surface of the top of the utility pole cap A is attracted to the cap suction cup 6 of the installation tool B, the operating rod 7 is lifted up, the utility pole cap A is placed over the top of the utility pole 1 from above, and the operating rod 7 is pulled down and fitted.

At this time, a taper is formed at the opening side end of the inclined protrusion 3, and the inclined protrusion 3 and the horizontal protrusion 4
Because they are independent, the inclined protrusion 3 and the horizontal protrusion 4 can easily fall down independently during insertion, making it easier to work in high places such as the top of the telephone pole 1, and at the same time once fitted. It becomes difficult to fall off. When the utility pole cap A is fitted to the top of the utility pole 1 to some extent, the cap suction cup 6 and the cap presser body 8 are pressed against each other and the cap A is further inserted. After that, when the utility pole cap A has been fully inserted into the top of the utility pole 1, the operation rod 7 is lifted and operated to press the utility pole cap A onto the top of the utility pole 1 using the cap holding body 8 as a fulcrum. However, when the suction cup 6 is lifted forward by lever action, the cord 13 attached to the outer periphery of the suction cup 6 is pulled, and the end of the suction cup 6 is torn off from the smooth utility pole cap A. Air enters the suction cup 6 and the suction cup 6 is lifted up. It can be peeled off from the utility pole cap A very easily. This allows the utility pole cap A to be fitted onto the top of the utility pole 1. If the top of the utility pole 1 is fitted with the utility pole cap A in this manner, even if the disk-shaped finishing member 9 at the top of the utility pole 1 is damaged, its fragments will not fall.

〔effect〕

As described above, the present invention has a plurality of inclined protrusions that are inclined with respect to the lower opening edge on the inner circumferential surface of the cap body for attaching to the top of the utility pole, and the openings of the inclined protrusions are The side edges are cut off in a tapered shape that gradually becomes lower as it approaches the lower opening, and horizontal protrusions are provided between the protrusions almost parallel to the lower opening, so that the tapered part of the inclined protrusions is The existence of horizontal ridges makes it easy to attach to the top of the pole, and the presence of the horizontal protrusion increases the strength of the bottom opening of the pole cap, making it difficult to detach from the top of the pole. This completely eliminates the problem of debris falling from the top of the head.

Incidentally, if the inclined protrusions and the horizontal protrusions are not connected to each other but are independent from each other, the protrusions are not restrained from each other and tend to fall down during insertion, making insertion easier.

[Brief explanation of the drawing]

FIG. 1: A partially cutaway bottom view showing the installed state of the present invention; FIG. 2: An enlarged longitudinal sectional view of the utility pole cap of the present invention; FIG. 3: A front view showing the present invention in use. A...Pole cap, B...Mounting tool, 1...
Utility pole, 2...Cap body, 3...Slanted protrusion, 4
...Horizontal protrusion, 5 ... Bottom opening edge, 6 ... Cap suction cup, 7 ... Operation rod, 8 ... Cap presser body, 9 ... Disc-shaped finishing member, 10 ... Mortar part, 11 ... Rebar, 12... mortar.

Claims (1)

[Scope of utility model registration request] A plurality of slanted protrusions are provided on the inner peripheral surface of the cap body for attaching to the top of the utility pole, and the slanted ridges are inclined with respect to the lower opening edge, and the opening side ends of the slanted ridges are brought closer to the lower opening. A utility pole cap characterized in that it is cut off in a tapered shape so as to gradually become lower as the height increases, and horizontal protrusions are provided between the inclined protrusions and protrude approximately parallel to the opening on the lower surface.