JPH0429004Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention is a method for attaching a utility pole to a utility pole in advance to prevent damage to the surface of the utility pole and reducing the required strength as a support when a vehicle or the like comes into contact with the pole. This relates to a protection plate for utility poles used for protection.

BACKGROUND OF THE INVENTION Utility poles installed in various road conditions are equipped with various types of protection plates to prevent damage from contact with automobiles and the like. For example, as described in Publication of Utility Model Publication No. 37-6854 or Publication of Utility Model Publication No. 32-12233, through holes are provided on both sides of a protective plate body made of a rectangular steel plate, and a band is attached to the main body using the through holes. A structure in which the body is connected and attached to the outer circumferential surface of a telephone pole using a band, or an arbitrary number of protective body plates are connected with a belt and attached as described in Publication of Utility Model Publication No. 45-22510. There is something like this.

Problems to be Solved by the Invention As shown in Figure 5, in the case of a utility pole installed at the inside corner of a narrow road, it must be protected from vehicles coming from each direction indicated by the arrows in the diagram. For this reason, a pole that can cover up to 3/4 of the entire circumference of the utility pole is required. however,
When protecting utility poles with a single protective plate as described in Utility Model Publication No. 37-6854, there are the following problems.

The main body of the protective plate is made of a thick steel plate with a thickness of 2 mm or more in order to withstand contact with automobiles, etc., so the main body of the protective plate is flexible enough to be easily pushed out by hand. There is no If a piece with a width that covers 1/2 or more of the circumference of a utility pole is pre-formed into an arc shape with an inner diameter equal to or less than the pole diameter, the protection plate itself will be damaged when attached to the utility pole. When an attempt is made to fit the utility pole through the opening, as shown in Fig. 4, the component forces P'1 and P'1 of the reaction force P' of the utility pole against the manual pressing force P act inward, causing the opening to narrow further. , it cannot be fitted onto a utility pole, and it is not suitable to push it open by hand, making it impossible to install.

Therefore, in the structure of the conventional example, the width of the opening is larger than the utility pole, and the width of the main body inevitably has to be able to cover less than half of the circumference of the utility pole. Not only is it unsuitable for installation on utility poles, but also, when installing it, there is a need for both the worker who is responsible for pushing the main body of the protection plate to the appropriate position on the utility pole (because it will fall if you let go of it), and the person who is holding the protection plate. At least two workers are required to tighten the mounting bands.

In the case of the one described in Japanese Utility Model Publication No. 45-22510, it is possible to cover the circumferential surface of the utility pole as appropriate, but not only does it require complicated processing and is expensive, but once it comes into contact with a vehicle, the connection of the protective plate The portion curls up to form a protrusion, which poses a danger to pedestrians and the like, and, like the prior art, multiple workers are required to install it.

Means for Solving the Problems The present invention was devised for the purpose of eliminating the drawbacks of the conventional example. A rectangular steel plate is formed in advance into an arcuate shape using a press or the like, and the top and bottom or either the top or bottom opposite corners of the main body are cut out to provide sloped edges.

Embodiment To explain the present invention according to the illustrations, Fig. 1 shows an embodiment of the present invention, in which a rectangular steel plate having a width covering 3/4 of the entire circumference is pressed in advance, leaving an opening 2. The opposing upper and lower side corners of the protective plate main body 1 formed into an arc shape are obliquely cut out to provide inclined edges 3, 3.

To explain the method of attaching the utility pole protection plate of the present invention to a utility pole according to the illustrations, first, as shown in FIG. After hitting utility pole A, protect plate body 1
When the upper part is strongly pressed by hand (shown as pressing force P), the component forces P'2 and P'2 of the reaction force P' on the A side of the telephone pole become the third
As shown in the figure, it acts outward and spreads the inclined edges 3, 3 to the left and right, and the opening 2 is rationally opened. moves along the utility pole A and fits onto the utility pole A, and then by sequentially moving the pressing operation downward to the protection plate body 1, the entire protection plate body 1 is easily fitted to the utility pole A. It will be done.

Due to the strong restoring force of the protective plate main body 1 installed in this way, its opening 2 returns to its original width and fits onto the utility pole A, so it will not fall even if the operator removes his/her hand, and will remain the same. The operator can complete the installation work by connecting and tightening the mounting band to the through holes 4, 4 provided in the protection plate main body 1.

It should be noted that although the above-mentioned installation order was described from the upper side of the protection plate main body 1, it goes without saying that the installation may be done conversely from the lower side in the same manner.
In addition, the protective plate body 1 is 1/2 to 3/4 of the entire circumference of the utility pole.
It is desirable to use a steel plate with a width that covers the

Effects of the invention As mentioned above, this invention is made of a single piece of thick steel plate that can be pre-formed into an arc shape suitable for the diameter of the utility pole to be attached by pressing, etc., and has sufficient protection against contact and abrasion by automobiles. Even the protective plate itself can be easily installed by one worker, and is useful for protecting utility poles that are built on narrow roads and are at risk of damage due to contact and abrasion from vehicles coming from multiple directions. Ideal as a board.

[Brief explanation of the drawing]

The drawings are explanatory diagrams related to the present invention. Fig. 1 is a perspective view of an embodiment of the present invention, and Fig. 2 is a side view showing the installation process of the utility pole protection plate, and the solid line indicates the utility pole protection plate of the present invention. In the case of , the broken line shows the case of the conventional product. FIG. 3 is a plan view of the state shown in FIG. 2, FIG. 4 is a plan view of the conventional example, and FIG. 5 is an explanatory diagram showing the position of utility poles on a narrow road. 1...Protective plate body, 3...Slanted edge.

Claims (1)

[Scope of utility model registration request] A rectangular steel plate with a width that covers 1/2 or more of the entire circumference of the utility pole is pre-formed into an arc shape by pressing etc. The upper and lower sides of the protective plate body or either the upper or lower opposing side corners are cut out to form an inclined edge. Protective plates for utility poles installed.