JPH0125164Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a pasting prevention device for concrete poles.

Conventionally, to prevent concrete poles from being pasted, vinyl chloride or other synthetic resin boards with many small protrusions on one side were pasted to the outer periphery of concrete poles with rubber glue, etc., with the small protrusions facing outward. Generally used. However, with this method, the pasting work performed at the pole construction site is affected by the weather, and in areas with poor footing or frequent traffic, it is difficult to make effective work time and requires a large amount of man-hours. The disadvantage was that it was expensive.
Also, if the concrete poles are pasted at a manufacturing factory, they may be peeled off or removed during transportation or handling during pole erection.
They often cause injuries, and it takes a lot of effort to protect them. Furthermore, due to deterioration over time, the adhesive strength of the applied glue decreases and it peels off.

In addition, synthetic resin plates, etc. are fixed integrally with the concrete when forming concrete poles, but there is a risk that the synthetic resin plates, etc. may shift on the concrete and easily come off from the concrete pole after forming. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a pole sticker prevention device that overcomes the drawbacks of the prior art as described above.

In order to achieve this purpose, the present invention fixes a plurality of small protrusions on the inner surface of the pine into the concrete when forming the pole, and also arranges both ends of the pine so that they overlap each other when the pine is wrapped around the pole. In addition, the present invention is characterized by a pole sticker prevention device that has small holes at each end into which small projections provided on the inner and outer surfaces of the mat are inserted, thereby making the mat firmly attached to the pole.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross section of a pole equipped with a sticker prevention device according to the present invention. Paul 4
A synthetic resin or rubber mat 1 having a large number of small protrusions 2 on the outer surface and a large number of small protrusions 3 on the inner surface is attached to the outer surface of the holder. Since the small protrusions 3 on the inner surface of the mat 1 are fixed in the concrete during pole formation, they can be attached much more firmly than those attached to the pole later.

The ends 1a, 1b of the mat 1 are provided with small holes 8a, 8b through which the projections 2 or small projections 3 can pass, respectively. Therefore, as shown in FIG.
By engaging the small protrusions 2, 3 of a, 1b with the small holes 8a, 8b, it is easy to make the mat 1 endless. As shown in FIG. 3A, the mat 1 is placed in a formwork 9, the upper part is opened with several spacers 10, and concrete 5 is poured in, and the ends 1a and 1b of the mat 1 are , when the small protrusions 2, 3 and the small holes 8a, 8b are engaged with each other to form an endless shape as described above and then centrifugally formed, the result is shown in FIG. 3B.
Pole concrete 5 and matte 1 as shown in
can be molded as one piece. Therefore,
Since the material of the mat 1 is not pasted like a conventional pasting prevention board, it does not need to be a soft material such as a soft vinyl chloride board, but a hard material with a high degree of polymerization can also be used. The selection can be made freely, and those with a high degree of polymerization can also have the effect of being less likely to deteriorate over time.

Next, the size, shape, and arrangement of the small protrusions 2 can be set as appropriate, but since the mat 1 is softer than concrete, changing from a hemispherical shape to a conical shape as it becomes softer will have a greater effect on preventing pasting.

In addition, the shape of the small protrusion 3 that is fixed to the concrete 5 may not necessarily be the same unless the mat 1 is easily peeled off.
It is not necessary to have an expanded tip, and the number thereof can be set as appropriate depending on the shape and material.

According to the present invention, as described above, the plurality of small protrusions on the inner surface of the pine are fixed in the concrete of the concrete pole, and when the pine is wrapped around the pole, both ends of the pine are connected to the small holes. There is a practical advantage that the pine will not easily separate from the pole because it is firmly connected by the inserted small protrusion.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the pole pasting prevention device according to the present invention, Fig. 2 is a sectional view of the end of the mat 1, and Fig. 3 is a sectional view of the end of the mat 1.
Figures A and 3B are explanatory diagrams of the molding process. 1...pine, 2, 3...small protrusion, 4...pole, 5...concrete.

Claims (1)

[Scope of utility model registration request] A mat made of synthetic resin or rubber that is wrapped around a concrete pole is provided, the mat has a large number of small protrusions provided on the outer surface and a plurality of small protrusions provided on the inner surface, and the mat is wrapped around the concrete pole. In a pole sticker prevention device that is installed so that the small protrusions on the inner surface are fixed in the concrete during molding, both ends of the mat are placed overlapping each other when wrapped around a concrete pole, and one end has the For a pole, characterized in that a small hole is provided into which at least one of the small protrusions on the inner surface is inserted, and a small hole is provided at the other end into which at least one of the small protrusions on the outer surface is inserted. Paste prevention device.