JPH01163377A - Method of installing wire gauge fence - Google Patents

Abstract

PURPOSE: To prevent the intrusion of small animals such as snakes or rats by excluding angular sections from corners and edge portions, connecting wire nets with the end sections of wires constituting the wire net, and arranging terminal lug sections on the inside of a fence. CONSTITUTION: Metal nets 2, knitted with an aluminum-coated steel wire 21 preferably coated with aluminum or an aluminum alloy on the outer periphery of a steel wire at such intervals which prevent the intrusion of small animals are connected, without using a frame body by a proper method such that the end sections 21a, 21b of the wires 21 are overlapped and folded. Excess terminal lug sections formed at this time are arranged on the opposite side to the intruder side A. Round posts are used for supports 1, and corners 3a formed on a horizontal frame body 3 are formed in a gentle curve. Angular sections and projections which may serve as footholds for snakes or the like are excluded at edges and corner sections, so that the intrusion of the small animals can be prevented.

Description

[Detailed Description of the Invention] U Industrial Field of Application] The present invention relates to a method for installing a wire mesh fence, and in particular to a wire mesh fence that can effectively prevent snakes, rats, etc. from entering electrical facilities from the outside. This relates to the installation method.

[Conventional technology and problems] Chain-link fences are installed in various places to prevent intruders from outside, but in electrical facilities, etc., wire mesh fences are always installed at high-voltage energized points to prevent danger. There is a chain-link fence in place.

FIG. 5 shows such a specific example, and shows an example in which a wire mesh fence 10 is stretched around a transmission line tower T. In this case, the wire mesh fence 10 prevents people from getting close to the steel tower, but if the target is only people, it is not a big problem because there are very few people who can climb up the steel tower without a wire mesh fence. Rather, this wire mesh fence 10 is installed to prevent small animals other than humans, especially snakes, from entering.

Snakes have strange habits, and during the summer they sometimes try to climb up steel towers and even onto power lines in search of coolness. At this time, if the snake's body crosses the insulator with its tail wrapped around the steel tower and its head touches the wire, the current will short-circuit through the snake's body, tripping the circuit breaker and causing a power outage. .

It is extremely difficult to investigate the cause of such power outage accidents because the snake in question is electrocuted and falls, and it often becomes a social problem as restoration takes an unexpectedly long time.

In addition, accidents such as short circuits caused by mice crawling into substation switchboards are frequently reported, and the industry is seriously considering preventing not only human intrusion but also small animal intrusion. It's been recommended to me.

In order to prevent the small animals from entering the transmission line tower T, it has been common practice to surround the power line with a wire mesh fence 10 having a mesh that is large enough for these small animals to not be able to pass through, as shown in FIG. Although this method has been widely used, conventional chain-link fences may be effective against large intruders such as people and dogs, but they are only used as gas against small animals such as snakes. Applicant's recent observations have shown that this is largely ineffective.

[Object of the Invention] The present invention was made in view of the above-mentioned circumstances, and provides a novel method for installing a wire mesh fence that makes it possible to appropriately prevent the entry of small animals such as snakes and rats. This is what we are trying to provide.

[Summary of the Invention] In other words, the gist of the present invention is to eliminate the corners or edges formed by the supports and frames when installing a wire mesh fence, and to eliminate the connection of the wire mesh. This is done by using the ends of the wires that make up the wire mesh without relying on the frame, and the surplus terminal protrusions at that time are placed on the side where there is no intruder into the fence. By not forming a part that becomes a ridge or a protrusion, even if a small animal, especially a snake, tries to climb up, there is no part that can be used as a clue, and as a result, it becomes impossible for small animals, especially snakes, to get into the inside of the fence. be.

[Example] The present invention will be explained below based on Examples.

FIG. 7(C) shows the wire mesh 2 used for the fence according to the present invention.
FIG. 2 is an explanatory diagram showing a specific configuration example.

The constituent material of the wire mesh 2 is not particularly limited, and may include ordinary galvanized steel wire, aluminized steel wire,
Although it is possible to select vinyl-coated iron wire or even wire made of non-metallic materials as appropriate, for items that will be used outdoors for many years, such as the above-mentioned fence for steel towers, wires such as those shown in Figure 7 (a) are suitable. From the viewpoint of corrosion resistance, weather resistance, and durability, it is appropriate to use an aluminum-coated steel wire 21 in which the outer periphery of the steel wire 22 is coated with aluminum or an aluminum alloy 23 by extrusion or the like.

The aluminum-coated steel wire 21.21 is formed into an appropriate waveform as shown in FIG. 7(b), and the vertical and horizontal lines are combined as shown in FIG. It is incorporated into 2.

Conventionally, the wire mesh 2 of unit length manufactured as described above has a frame fitted around it to form a unit wire mesh, and when assembling this into a fence, the frames of the wire mesh are sequentially connected. By going in it was constructed as a fence. However, depending on the method of interconnecting such frames, the formation of corners or protrusions that serve as footholds for snakes, for example, cannot be eliminated, and the mesh spacing of the wire mesh 2 described above cannot be eliminated. Applicants' observations have revealed that even if the fence is so wide that a snake cannot pass through, the snake will use the corners or protrusions as footholds to climb up the fence itself and can easily enter the inside of the fence. be.

Therefore, in the present invention, connection using a frame body, which causes such footholds, is not performed.

Such a frame is not used, and the ends of the filaments 21.21 forming the wire mesh 2.2 are used to connect the wire mesh 2.2.

FIG. 1 is an explanatory diagram showing how wire meshes 2.2 are connected by the connection method according to the present invention. Wire mesh to be connected 2.2
A frame body is not attached to the wire mesh 2, and the wires 2 constituting the wire mesh 2
1.21 Overlap one end 21a and the other end 21b of the aluminum-coated steel wire (in this example, described earlier), and intertwine the ends 21a and 21b, and then fold and engage with each other. The metal nets 2, 2 are connected to each other by forming them in a connected state using an appropriate method.

That is, Fig. 2 shows an example in which the end portion 21b is bent to a length of 30'' or more for connection, and Fig. 3 shows an example in which the end portions 21a and 21b are bent at a substantially right angle and then held between connecting plates 24.24''. Fig. 4 shows an example in which the end portion 21b is folded 180° and then connected.

By bending and connecting the ends 21a and 21b like this,
An extra protrusion is formed at the terminal. This protrusion naturally becomes a good foothold for intruders such as snakes. Therefore, in the present invention, the ends 21a, 21
As shown in FIGS. 2 to 4, the terminal protrusion connected using the cylindrical part B is placed on the side opposite to the side A where there is an intruder such as a snake. By doing this, the risk of intruders using the protrusions or corners formed when connecting the wire mesh is eliminated, and small animals using these as footholds to climb up the fence and thereby enter the inside of the fence are eliminated. Intrusion is completely prevented.

What remains are protrusions or corners formed by the supports or frames for the fence structure other than the above-mentioned connection parts, but in the present invention, the formation of protrusions or corners in such parts is also excluded. .

FIG. 6 is a schematic plan view of the fence 10 of FIG. 5 viewed from above. The pillars 1, 1 are all cylindrical and do not have any corners at their edges, and the corners 3a formed by the horizontal frame 3 are formed into gently curved surfaces and also have no corners.

As described above, in the wire mesh fence 1-0 according to the present invention, the formation of any corners or protrusions at the joints or edges or corners is eliminated, so there are no protrusions that catch the scales of a snake when it tries to climb up. and cannot get over the fence. The same can be said of small animals such as mice, which eventually find it difficult to climb because they lack corners or protrusions to use as cues for climbing, so they give up and move away.

The above has been explained with a particular focus on preventing the intrusion of small animals, but the installation method according to the present invention has the efficient connection of the wire mesh as its main solution, and the purpose of installing the fence is other than preventing the intrusion of small animals. Even if it is, it goes without saying that it is within the scope of the technical idea of the present invention as long as the configuration is the same.

[Effects of the Invention] As described above, the installation method according to the present invention exhibits an outstanding effect of preventing the intrusion of small animals, for example, and constitutes a fence that is most suitable for the original purpose of installation. The significance of what can be done is great.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing how wire mesh is connected by the method according to the present invention, Figs. 2 to 4 are explanatory diagrams showing three types of embodiments of the connection part according to the present invention, and Fig. 5 is an explanatory diagram showing the surroundings of the steel tower. FIG. 6 is a schematic plan view showing the configuration of the fence in FIG. 5, and FIG. A cross-sectional view of the coated steel wire, FIG. 3(b) is an explanatory diagram showing the molding situation of the wire, and FIG. 1: Post, 2: Wire mesh, 3: Frame, 3a: Corner, 10: Fence, 21: Line. Agent Patent Attorney Fujio Sato Figure 5 Figure 6 (a)

Claims (3)

[Claims] (1) A wire mesh is stretched by a support and a frame, and the edges or corners formed by the support and the frame are curved, and the wire mesh is connected to each other at the ends of the wires forming the wire mesh. A method for installing a chain-link fence, in which the terminal protrusion is placed on the side where there is no object to be prevented from entering by the fence. (2) The installation method according to claim 1, wherein the wire mesh is made of aluminum-coated steel wire. (3) The installation method according to claim 1 or 2, wherein the object to be prevented from entering is a small animal such as a snake or a mouse.