JP3255999B2 - Telephone pole protection plate and its mounting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection plate for a utility pole , which is lightweight and compact, has excellent corrosion resistance, and is excellent in work for attaching to a utility pole , and a method of mounting the same.

[0002]

2. Description of the Related Art In recent years, with the increase in traffic volume, the number of accidents in which an automobile comes into contact with or collides with a utility pole has increased, and protection of the utility pole has become an important problem. In particular, when it comes into contact with a concrete power pole, the concrete on the power pole surface is broken and the reinforcing steel bar is exposed. If left unchecked, there is a high risk that the reinforcing steel will corrode and deteriorate, leading to serious troubles. Conventionally, as a measure for protecting such a telephone pole, a protection plate made of an iron plate which is formed by bending an iron plate into a cylindrical shape has been mainly used. In a method of mounting such an iron plate protection plate on a power pole, a bent iron plate is wound around a power pole, and then a rear portion is bolted through a metal band.

[0003]

However, the conventional iron plate protection plate is heavy in weight, and the workability is poor because the iron plate protection plate is attached to the telephone pole by fastening a metal band. was there. In addition, since iron is corroded, when it is used near a coast or in a cold region where an antifreezing material is used, the durability is unsatisfactory. Furthermore, since the rear part is joined by bolts, when a pedestrian passes behind a utility pole, the pedestrian often gets caught on the bolts and is injured.

[0004] The problem to be solved by the present invention is to reduce weight and weight.
Compact rich in corrosion resistance, and can be easily attached to the utility pole, workability, and to provide a and its mounting method protective plate for a utility pole that is excellent in safety.

[0005]

The inventor of the present invention has made intensive studies in view of the above-mentioned drawbacks. As a result, the protection plate of the utility pole is made of fiber reinforced resin and has a specific shape.
The inventors have found that the above problems can be solved, and have completed the present invention.

The protection plate for a utility pole according to the present invention is a tubular protection plate mounted on the peripheral wall surface of the utility pole to partially protect the utility pole , and the protection plate is mainly composed of a fiber reinforced resin. and, a portion of the peripheral wall of the cylindrical open end which is cut in the height direction of the cylinder is formed toward the lower end from its upper end, when not attached to said utility pole, it is a small inner diameter than the outer diameter of the utility pole and when it is mounted on the utility pole, the electric
The inner circumference is larger than half of the outer circumference of the pole , and has a shape that is not more than ３ of the entire outer circumference of the power pole .

Further, the mounting method of the protective plate of the electric pole of the present invention, the protective plate of the utility pole, electrostatic and spread between its open end
It is characterized by being fitted into a pillar .

Hereinafter, the protection plate for a utility pole and the method of mounting the same according to the present invention will be described in detail. First, telephone pole utility pole of the protective plate of the present invention is mounted, may be one which requires protection of its surface, particularly not being identified, representative of those problems described above is a serious Particularly, concrete electric poles, wooden electric poles and the like can be mentioned.

The protective plate of the utility pole according to the present invention has a fiber-reinforced resin as a main component, and has an opening end in which a part of a cylindrical peripheral wall is cut from the upper end to the lower end in the height direction of the cylinder. is, during non-attachment to the utility pole, a smaller inner diameter than the outer diameter of the utility pole, and when it is mounted on the utility pole, a greater than half the circumference of the outer periphery of the electric pole, 3 of the total outer circumference of the electric pole / 4 or less. That is, it is possible to provide a gripping force to the protective plate itself by providing such a specific shape, the conductive
The pillar can be fixed without using a fastening member such as a bolt.

It is preferable that a concave portion and a convex portion are formed on the outer surface of the peripheral wall of the protection plate of the utility pole of the present invention in order to prevent the utility pole from being stuck on the protection plate. If the concave portions and the convex portions are formed on the outer surface of the peripheral wall in this manner, the area for applying the adhesive for attaching the sticking paper to the protection plate of the telephone pole is small, and it becomes difficult to stick the sticking paper or the like. The depth of the concave portion needs to be not filled when the amount of the adhesive is increased, and is about 1 to 5 mm.

The projection may have a pointed shape or a curved shape. In addition, the projections may be continuous in the height direction of the peripheral wall, or may be formed intermittently in large numbers. Further, the projections may be continuous in the circumferential direction of the peripheral wall, or may be formed intermittently in large numbers. Further, the projections may be randomly provided on the entire outer surface of the peripheral wall.

[0012] inner periphery of the protective plate of the utility pole when it is mounted on the utility pole, in order to further have a strong gripping force, the
It is preferable that it is larger than half of the outer circumference of the utility pole and not more than ３ of the entire outer circumference of the utility pole .

The material forming the protection plate of the utility pole of the present invention is preferably a material having an appropriate elastic modulus and elastic deformation amount as the protection plate. In other words, the gripping force when the protective plate is mounted on the utility pole, while pushing between the open end of the protective plate, which is elastically deformed without destroying this case, fixing of the deformation restored utility pole after mounting is sufficient It is necessary to have.

The fiber reinforced resin is obtained by adding a fiber reinforced material to the resin, and has an excellent balance between easy elastic deformation and restoring force after mounting. It can be optimally and easily adjusted and designed by the ratio, the composition of the fiber reinforcement, the wall thickness and the like.

On the other hand, when the protective plate is made of a metal material such as iron, the elastic modulus is very high and the amount of elastic deformation is small, so that a very large force is required to spread the gap between the opening ends. Therefore, a large amount of labor is required, and after the gap between the opening ends is expanded, plastic deformation is apt to occur, and a gripping force cannot be obtained. Further, a resin not reinforced with a fiber reinforcing material does not cause plastic deformation, but has a low elasticity and thus has low strength, and is easily broken when an external force is applied.

The modulus of elasticity of the fiber reinforced resin forming the protection plate of the utility pole of the present invention is preferably 700 to 3000 kgf / mm ² from the viewpoint of the balance between easy elastic deformation and restoring force.

The resin used for the fiber reinforced resin is not particularly limited, but may be an unsaturated polyester resin,
Thermosetting resins such as vinyl ester resins, epoxy resins and phenol resins, and thermoplastic resins such as polypropylene resins, nylon resins and polyethylene resins are preferred.

The fiber reinforced material used for the fiber reinforced resin includes glass fiber, carbon fiber, aramid fiber and the like, and these may be used alone or in combination.

The content of the fiber reinforced material in the fiber reinforced resin forming the protection plate of the utility pole of the present invention is not particularly limited, but from the viewpoint that the above-mentioned preferable elastic modulus can be obtained, it is 30 to 30%.
60% by weight is preferred.

The use of such a fiber-reinforced resin of the present invention
The method of forming the protection plate of the telephone pole is not particularly limited,
When using a thermosetting resin, for example, a hand-loading method, a spray-up method, a matched die method, a premix method, a prepreg method, a filament winding method, a pultrusion molding method, and the like.On the other hand, when a thermoplastic resin is used, For example, kneading a fiber reinforcing material with a thermoplastic resin to form a pellet, attaching the fiber reinforcing material to the surface of the pellet, mixing with a powdered thermoplastic resin, and the like, using an ordinary injection molding machine. Molding.

[0021] The protective plate of the utility pole of the present invention to be mounted on the utility pole may simply fitted to the utility pole by spread between the opening end of the electric pole of the protective plate of the present invention. In this manner, the protection plate for the utility pole of the present invention can be attached to the utility pole .

The electric pole protection plate of the present invention has an appropriate elastic modulus and an elastic deformation amount. When the protection plate is mounted on the electric pole , the protection plate is not broken even if it is spread between the open ends of the protection plate. the elastically deformed, because it has a gripping force securing is sufficient to deform restored utility pole after mounting, it can be attached to just easily telephone poles widen between open end.

Various tapes and the like can be attached to the outer surface of the peripheral wall on the protective plate of the utility pole of the present invention in order to improve the surface appearance and display characteristics. Further, in order to effectively obtain the gripping force, a fiber reinforcement continuous in the circumferential direction can be provided. In addition, an adhesive, a pressure-sensitive adhesive, or the like can be used on the inner surface of the peripheral wall to increase the bonding strength to the utility pole .

Next, an example of the protection plate of the utility pole of the present invention and its mounting method will be described, but the present invention is not limited to this. FIG. 1 is a schematic configuration diagram showing an example of a protection plate for a utility pole of the present invention, particularly a protection plate for a utility pole. FIG. 2 is a cross-sectional view of the protection plate and the electric pole when the electric pole is not attached to the electric pole. FIG. 3 is a cross-sectional view of a protection plate of the utility pole and a utility pole when the utility pole is mounted on the utility pole . FIG. 4 is a side view of the protection plate of the utility pole and the utility pole when mounted on the utility pole .

Reference numeral 1 in FIG. 1 denotes a protection plate (hereinafter abbreviated as a protection plate) for the utility pole of this embodiment. This protection plate 1
Is a substantially cylindrical shape made of fiber reinforced resin, that is, an opening end 5 in which a part of the peripheral wall 3 of the cylinder is cut out in the height direction of the cylinder from its upper end to its lower end. The inner diameter D ₁ of the protection plate 1 is smaller than the outer diameter D _{2 of the} electric pole 21 when not attached to the electric pole 21 as shown in FIG. The inner circumference 7 of the protection plate 1 is larger than half of the outer circumference 23 of the power pole 21 when mounted on the power pole 21 as shown in FIG. By giving the protective plate 1 a specific shape in this way, the protective plate 1 itself can be given a gripping force, and the protective plate 1 can be fixed to the utility pole 21 without using a fastening member such as a bolt. It becomes possible.

On the outer surface 9 of the peripheral wall 3 of the protective plate 1,
In order to prevent the paper from being stuck on the protective plate 1, concave portions 11 and convex portions 13 extending in the height direction from the upper end to the lower end of the peripheral wall 3 are alternately formed at equal intervals, forming a continuous stripe shape. . When the concave portions 11 and the convex portions 13 are formed in a continuous stripe shape as described above, the protection plate 1
In addition to preventing sticking to the protection plate 1, the sticking sheet and the like stuck to the protection plate 1 can be easily peeled off.

The inner circumference 7 of the protection plate 1 is larger than half of the outer circumference 23 of the power pole 21 when mounted on the power pole 21 and has the entire outer circumference 23 Is preferably 3/4 or less.

In order to mount such a protective plate 1 on the utility pole 21, it is only necessary to spread out the gap 15 between the open ends of the protective plate 1 and fit it into the utility pole 21. In this way, the protection plate 1 can be attached to the utility pole 21 as shown in FIG.

The protective plate 1 of this example is made of a fiber reinforced resin, and does not require bolt fastening.
Lightweight, compact and excellent in corrosion resistance, and excellent in safety for pedestrians. Further, the outer surface 9 of the peripheral wall 3 of the protection plate 1
Since the concave portion 11 and the convex portion 13 are formed on the lower surface, it is possible to prevent sticking and the like, and it is easy to peel off the stuck and the like.
In addition, the workability of the protection plate 1 for mounting on the utility pole 21 is greatly improved because the protection plate 1 is lightweight and no bolt fastening work is required.

[0030]

EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. (Example 1) Unsaturated polyester resin was used as a resin, glass fiber was used as a fiber reinforcement, and the glass fiber was formed by a hand lay-up method using a chopped strand mat and a roving cloth in the same manner as in FIG. Protective plate 1 made of fiber reinforced resin was obtained. The content of glass fibers in the fiber reinforced resin was 45% by weight. The protective plate 1 obtained here has a substantially cylindrical shape having an inner diameter D ₁ of 200 mm, a thickness T of 3 mm, a central angle of 240 °, and a height H of 900 mm, that is, a part of the peripheral wall 3 of the cylinder has an upper end. An opening end 5 cut out in the height direction from the lower end to the lower end was formed. In addition, a triangular concave portion 11 and a triangular convex portion 13 extending in the height direction from the upper end to the lower end of the outer surface 9 of the peripheral wall 3 of the protective plate 1 are formed,
Continuous stripe-shaped projections were formed, and the distance L between adjacent projections 13 was equal to 10 mm.

Then, the protection plate 1 obtained here was fitted to the utility pole 21 and attached while pushing the opening ends 15 of the protection plate 1 apart. Outer diameter D ₂ of the utility pole 21 was 220 mm. In this way, as shown in FIG. 4, the protection plate 1 was firmly fixed to the utility pole 21 , and it was confirmed that the protection plate 1 did not drop and had a sufficient gripping force.

[0032]

As described above, according to the present invention, a utility pole which is lightweight and compact, has excellent corrosion resistance, and is secured against pedestrians because bolts are not required. Can be provided. In addition, in the case where irregularities are formed on the outer surface of the peripheral wall of the protective plate of the telephone pole , there is an advantage that it is effective in preventing sticking. As for the attachment to the utility pole, the protective plate of the electric pole of the present invention is lightweight,
In addition, the workability is greatly improved because the bolt fastening work is unnecessary.

[Brief description of the drawings]

[1] electric pole of the protection plate of the present invention, is a schematic configuration diagram particularly showing an example of the protection plate of the utility pole.

FIG. 2 is a cross-sectional view of a protection plate and a power pole of the power pole shown in FIG. 1 when the power pole is not attached to the power pole.

FIG. 3 is a cross-sectional view of the protection plate of the utility pole and the utility pole shown in FIG. 1 when the utility pole is mounted on the utility pole .

FIG. 4 is a side view of the utility pole protection plate and the utility pole shown in FIG. 1 when mounted on the utility pole .

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Protection plate, 3 ... Peripheral wall, 5 ... Open end, 7 ... Inner circumference, 9
... outer surface, 11 ... concave portion, 13 ... protruding portion, between 15 ... opening end, D ₁ ... inner diameter, 21 ... utility pole, 23 ... outer circumferential, D ₂ · ·・
Outer diameter

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor, Suki Senoo 18-21, Chaya-cho, Kita-ku, Osaka, Japan Inside the Japan Arm Co., Ltd. (72) Katsumi Yamamoto 18--21, Chaya-cho, Kita-ku, Osaka, Osaka (72) Inventor Akiyoshi Yamada 4-17-105, Junanmachi, Izumiotsu-shi, Osaka (72) Inventor Michinari Kanemoto 2-12-25, Yayoimachi, Izumi-shi, Osaka (72) Inventor Koen Makoto 121-9 Takaida, Kashiwara-shi, Osaka (56) References JP-A-64-38783 (JP, A) Japanese Utility Model Application Serial No. 52-18658 (Japanese Utility Model Application No. Sho 53-114116) Microfilm of the contents of the film (JP, U)

Claims (5)

(57) [Claims] 1. A mounted on the peripheral wall surface of the utility pole, a cylindrical protection plate for protecting the electric pole <br/> partially, the protective plate has a main component fiber reinforced resin, and, part of the peripheral wall of the cylindrical open end which is cut in the height direction of the cylinder toward the lower end is formed from the upper end, when not attached to the utility pole, a smaller inner diameter than the outer diameter of the utility pole, and wherein Electric
When mounted on the pillar, a greater than half the circumference of the outer periphery of the electric pole, protective plate for a utility pole, characterized in that it has a shape which is 3/4 or less of the total circumference of the utility pole. 2. The fiber reinforced resin has an elastic modulus of 700 to 300.
Utility pole protective plate according to claim 1, characterized in that the 0 kgf / mm ^2. 3. The utility pole protection plate according to claim 1, wherein the content of the fiber reinforced material in the fiber reinforced resin is 30 to 60% by weight. 4. The protection plate for a utility pole according to claim 1, wherein irregularities are formed on an outer surface of the peripheral wall. 5. The electronic device according to claim 1,
A method for mounting a protection plate for a utility pole , wherein the protection plate for the pole is spread over the open end of the pole and fitted into the utility pole .