JP2002069936A - Snow damage prevention net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snow damage prevension net which is quite excellent in weatherbility, durability and requires less maintenance frequency and further, which does not make a large snow lump drop on the ground even in a snow fall. SOLUTION: The snow damage prevention net has such a feature that it is constituted of an inverted umbrella-shaped frame body supported by a plurality of net support columns between a lower side support small ring and an upper side support large ring, a net woven with metallic wires stuck to the outer peripheral face of the inverted umbrella shaped frame body, and a plurality of support lines supporting the upper part of the net fixed to the upper side part of the upper support large ring at one side end and fixed to the other member at the other end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow damage prevention net. More specifically, the present invention relates to a snow damage prevention net capable of preventing personal injury and property damage caused by falling snow from a power transmission tower or a communication cylinder tower.

[0002]

2. Description of the Related Art Power transmission towers and communication cylinder towers are high-rise buildings.

[0003] For this reason, an armrest of a power transmission tower or a communication cylinder tower is also installed at a high place.

[0004] When snow falls around the arm of the transmission line tower or the antenna mount of the communication cylinder tower installed at such a high place, the arm of the transmission line tower or the antenna of the communication antenna tower. Large snow clumps may form on the antenna mount.

[0005] These large snow chunks may fall to the ground under the influence of strong winds or the like. As described above, when a snow mass larger than a high place falls to the ground, there is a concern that personal injury or property damage may occur.

Therefore, measures are taken against snowfall such that even if snow falls on the arm of the transmission line tower or the antenna mount of the communication cylinder tower, the snow falls before growing into a large snow mass.

[0007] Conventional measures against snowfall are to coat a water-repellent paint, for example, a silicone resin paint or a fluororesin paint, on the armrest of the electric wire tower or the antenna mount of the communication cylinder iron tower, thereby using the armrest of the electric wire tower or communication. To provide a highly water-repellent coating layer on the surface of the antenna mount of the cylinder tower.

When snow falls around the arm of a wire tower having a highly water-repellent coating layer on its surface or the antenna mount of a communication cylinder tower, the fallen snow naturally falls on the arm of the wire tower. It falls on the high water-repellent coating layer on the surface of the antenna mount of the gold or telecommunication cylinder tower. However, the falling snow falls to the ground before growing into a large snow mass due to the highly water-repellent coating layer. Therefore, large snow masses do not grow on the armrests of electric wire towers and the antenna mounts of communication cylinder steel towers with a highly water-repellent coating layer on the surface. Can be prevented.

[0009]

However, the highly water-repellent paint is expensive, and the highly water-repellent coating layer obtained by coating the highly water-repellent paint has poor weather resistance and durability, and as a result, has a high repellency. The application of the waterborne paint had to be performed every 2-3 years.

For this reason, in the prior art, an expensive high water-repellent paint is applied every two to three years to the arm of a wire tower or the base of a communication cylinder tower at a high place. They had to spend a lot of man-hours and money on management.

The present invention has been made in view of such a point, and aims at solving the above-mentioned drawbacks of the prior art, and has remarkably excellent weather resistance and durability, and low maintenance frequency. Another object of the present invention is to provide an inexpensive snow damage prevention net that does not cause large snow chunks to fall to the ground even when snow falls.

[0012]

SUMMARY OF THE INVENTION The gist of the present invention is to provide an inverted umbrella-shaped skeleton having a plurality of net support columns supporting a lower supporting small ring and an upper supporting large ring. One end is fixed to an upper side portion of the upper support large ring, and the other end is fixed to another member, the metal wire knitting net attached to the outer periphery of the inverted umbrella-shaped skeleton. A snow damage prevention net, comprising a plurality of net upper branch lines.

In the present invention, the metal wire constituting the metal wire knitting net is preferably an aluminum-coated steel wire having extremely excellent corrosion resistance and durability.

In the present invention, it is preferable that the upper branch wire of the net is an aluminum-coated steel wire having extremely excellent corrosion resistance and durability.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a snow damage prevention net of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory front view showing an example in which an embodiment of a snow damage prevention net according to the present invention is attached to a lower portion of an antenna mount of a communication cylinder tower.

In FIG. 1, 1 is an installation ground, 2 is a base stand, 3 is a cylindrical steel tower member, 4 is an antenna mount, 5 is a communication antenna, 10 is a snow damage prevention net of one embodiment of the present invention,
11 is a lower supporting small ring, 12 is an upper supporting large ring, 1
Reference numeral 3 denotes a net support pillar, 14 denotes a net upper branch line, 15 denotes an aluminum steel wire net, and 16 denotes a snow damage prevention net fixing stand.

First, the outline of the communication cylinder tower will be described.

As can be seen from FIG. 1, the communication cylinder tower has a base 2 built on the ground 1 on which the communication cylinder tower is installed, and a long cylindrical tower 3 is erected vertically on the base 2. . Further, an antenna mount 4 is mounted on the outer periphery of the upper part of the cylindrical steel tower member 3, and a communication antenna 5 is erected and supported at the most distal end of the cylindrical steel tower member 3 and the antenna mount 4. It has become.

Next, a snow damage prevention net according to an embodiment of the present invention will be described.

As can be seen from FIG. 1, the snow damage prevention net 10 according to one embodiment of the present invention is formed into an inverted umbrella net.

That is, the skeleton of the snow damage prevention net 10 according to one embodiment of the present invention comprises a lower supporting small ring 11, an upper supporting large ring 12, and a combination of the lower supporting small ring 11 and the upper supporting large ring 12. And a net support column 13 for supporting the space. Although not shown, eight net support columns 13 are used. A net upper branch line 14 is fixed to the upper support large ring 12. The number of the net upper branch lines 14 is also eight. The tips of these eight net upper branch lines 14 are fixed to the lower part of the antenna mount 4, respectively, so that the snow damage prevention net 1 according to one embodiment of the present invention is provided.
The upper side of 0 is supported by the lower part of the antenna mount 4.

On the other hand, the lower side of the snow damage prevention net 10 of one embodiment of the present invention is supported by a snow damage prevention net fixing stand 16. The snow damage prevention net fixing base 16 is cylindrical so as to be fitted on the outer periphery of the cylindrical steel tower member 3. In this case, the snow damage prevention net fixing base 16 may be of an integral type, or may be of a two-part type so as to be easily attached and detached.

The aluminum-made steel wire net 15 is formed by knitting an aluminum-made steel wire having an outer diameter of 2.3 mm into a 15 cm square stitch. When the size of the stitch is small, the falling snow is difficult to fall, and when the size of the stitch is excessively large, the mesh effect is lost. Generally, the size of the stitch is preferably about 15 cm square. In other words, a net 15 made of aluminum-coated steel wire with a stitch size of around 15 cm
Can be shattered to the smallest extent when snowflakes fall onto the ground.

In addition, the aluminum-coated steel wire has excellent corrosion resistance and durability, as well as excellent mechanical strength, and therefore has excellent maintenance-free properties.

In the present invention, a highly water-repellent paint such as a silicone resin paint or a fluororesin paint is applied to the surface of the aluminum-coated steel wire in order to improve the falling property of the snow clump. A coating layer can also be provided.

Further, the lower supporting small ring 11
Has an outer diameter φ of 2 m and an upper support large ring 12 has an outer diameter φ of 9
m, the height is 4 m, and the shape is an inverted umbrella.

[0028]

The snow damage prevention net according to the present invention is remarkably excellent in weather resistance and durability, requires less maintenance, and is inexpensive, and is industrially useful.

[Brief description of the drawings]

FIG. 1 is a front explanatory view showing an example in which an embodiment of a snow damage prevention net of the present invention is attached to a lower portion of an antenna mount of a communication cylinder tower.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Installation ground 2 Base stand 3 Cylindrical steel tower member 4 Antenna stand 5 Communication antenna 10 Snow damage prevention net of one embodiment of the present invention 11 Lower support small ring 12 Upper support large ring 13 Net support pillar 14 Net upper branch line 15 Aluminum cover Steel wire net 16 Snow damage prevention net fixed base

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kyoji Kobayashi 4-10-1, Kawajiri-cho, Hitachi City, Ibaraki Prefecture Inside the Toyoura Plant of Hitachi Cable Co., Ltd. No. 1 Hitachi Cable Co., Ltd. Toyoura Plant (72) Inventor Jun Yamada 4-10-1 Kawajiri-cho, Hitachi City, Ibaraki Prefecture Hitachi Cable Co., Ltd. Toyoura Plant F-term (reference) 2D001 PA01 PC00 PD11

Claims (3)

[Claims] 1. An inverted umbrella-shaped skeleton body supported by a plurality of net support columns between a lower supporting small ring and an upper supporting large ring, and a metal attached to an outer periphery of the inverted umbrella skeleton body. It is characterized by comprising a knitted net and a plurality of net upper branch lines, one end of which is fixed to the upper side portion of the upper support large ring and the other end of which is fixed to another member. Snow damage prevention net. 2. The snow damage prevention net according to claim 1, wherein the metal wire is an aluminum-coated wire. 3. The snow damage prevention net according to claim 1, wherein the net upper branch line is an aluminum steel wire.