JP2010088415A - Apparatus for preventing nest building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent birds from building a nest on a pole mounted switch or arms mounted in the upper part of the pole, and causing an accident in a distribution line. <P>SOLUTION: An apparatus 4 for preventing nest building including a semicylindrical body composed of a rigid insulating material is fixed on the top surfaces of the arms 3a and 3b which suspend the pole mounted switch 2 thereon. The top surfaces are the rigid semicylindrical body to thereby prevent a nest-building material from depositing on the apparatus 4 for preventing the nest building and pole mounted switch 2 or the arms 3a and 3b if birds drop the nest-building material from the sky. Furthermore, protrusions 5 and 6, and magnets 7 are provided on the undersurface and lateral face contacting the arms 3a and 3b of the apparatus 4 for preventing the nest building. Thereby, the transverse shift and falling off of the apparatus 4 for preventing the nest building from the arms 3a and 3b are prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pole switch installed on a utility pole and a bird damage prevention apparatus for preventing bird nesting on a brace.

  In general, crows and other birds fly on the pole switches and braces installed on the power poles, and they tend to nest. This nesting may cause power distribution accidents. The found nests are removed by electric power companies, but it takes a lot of time and labor to remove many of the nests that have been increasing in recent years. There is a risk of being attacked by a crow.

  In order to prevent such nesting, for example, techniques disclosed in Patent Documents 1 to 3 are used. The bird damage prevention structure disclosed in Patent Document 1 eliminates bird nesting space by erecting a shielding plate so as to divide the upper surface of the pole switch.

  The bird harm prevention structure disclosed in Patent Document 2 covers birds on the high voltage charging part including the pole switch by covering the upper part of the support of the pole switch with a roof-type cover from the power pole base. It is to prevent.

Patent document 3 discloses a bird damage prevention structure in which a smooth flat plate is installed on top of a support for a pole switch, so that even if birds try to install a nesting material, the nesting material slides down from the flat plate. is there.
Japanese Patent Laid-Open No. 9-28270 JP-A-9-28267 JP 2006-296277 A

  However, the crow, whose nesting is a problem, in particular, even if the nesting space is divided by a shielding plate as in Patent Document 1, in order to make the foundation of the nest by dropping the nesting material from the air in the air The nesting material dropped in the space between the shielding plates may come into contact with the live parts and the case, causing a ground fault.

  In recent years, metal hangers used in the laundry industry or the like are often used as nesting materials. Since these metal hangers bend freely and have hook portions, the space between the shielding plates in Patent Document 1 is used. It is easy to get caught and may be nested using this as a foothold.

  As in Patent Document 2, the method of covering the entire area around the power pole above the armrest on which the pole switch is suspended is usually covered with the armrest at a position away from the pole. Therefore, in order to cover the upper surface of the pole switch, the shape of the roof-type cover becomes large, which is not only inconvenient to handle, but also has a risk of being blown by the wind in a strong wind.

  In addition, the roof type cover in Patent Document 2 has a structure in which members divided from each other are assembled. However, since a gap or a step is formed at a joint portion of each member, the nesting material is easily caught, and the nesting material can be nested as a scaffold. There is.

  As in Patent Document 3, if the entire upper surface of the pole switch is shielded with a single flat plate, the shape of the flat plate becomes large, which is not only inconvenient to handle, but also has the risk of being scattered by strong winds. There is.

  Further, in the method of covering the arm metal with the cover as in Patent Document 2 and Patent Document 3, high voltage insulation parts such as high voltage pin insulators and arresters are installed on the arm metal for suspending the pole switch. In order to avoid these high-voltage insulation parts and high-voltage wires, an opening is required in the cover, so that the nesting material dropped from the top of the cover is easily caught in the opening and comes into contact with the charging part to cause a ground fault. There is a risk of an accident.

  An object of this invention is to provide the nesting prevention apparatus which can prevent the nesting of birds to a pole switch or a brace more reliably.

  In view of the above problems, the nesting prevention device provided by the present invention is for preventing the nesting of birds on a pole switch or a brace installed on a utility pole, and the pole switch is suspended. A semi-cylindrical body made of an electrically insulating material is installed on the upper part of a support or a brace.

  According to this configuration, by covering the opening of the pole switch and the brace from above with the half cylinder of the insulator, the nesting of birds to the pole switch and the brace is prevented, and the half cylinder By making the upper surface of the surface smooth, the nesting material dropped by the birds can be slid to prevent the nest material from staying on the semi-cylinder, thereby preventing the birds from nesting.

  In order to slide the nesting material that has fallen on the half cylinder, the surface roughness of the upper surface of the half cylinder (the maximum height specified in JIS B0601) is preferably Ry ≦ 1 mm. As a result, the nesting material is easily slipped off the half-cylinder by the momentum when falling onto the half-cylinder or by the natural wind force after being placed on the half-cylinder, so that nesting is prevented at the initial stage. can do.

  By setting the size of the half cylinder to be equal to or greater than the width of the armrest that suspends the pole switch, the nesting material dropped from the edge of the half cylinder passes outside the armrest, It is possible to prevent the nesting material from being caught on the armor or the pole switch. Furthermore, the ground fault accident by contacting the charging part of a pole switch can be prevented.

  The half cylinder may be a plate made of one kind of material or a resin molded product having a hollow inside, but at least the upper surface has durometer hardness (JIS K7215) and a hardness of D50 or more. If it does so, the depression of the upper surface part by the nesting material which fell on the half cylinder and the flying of a bird can be prevented, and it can prevent that the smoothness of the upper surface of a half cylinder falls by this depression.

  In addition, by giving elasticity to at least the upper surface of the half cylinder, the nesting material dropped on the half cylinder is repelled, and the nesting material is easily dropped from the edge of the half cylinder by the momentum, and the upper surface of the half cylinder It is possible to prevent the nesting material from getting into the part due to the bite.

  By making the shape a semi-cylindrical body, it is possible to eliminate a foothold on which birds stop and prevent its feces. In other words, in the case of a cover composed of several planes, the edge of each plane tends to be a foothold for birds, but since the upper surface of the half cylinder is composed of a curved surface, there is no edge that becomes a foothold for birds. It is possible to prevent birds from trapping in the half cylinder. Thereby, it is possible to prevent a ground fault caused by bird droppings and the smoothness of the upper surface of the half cylinder from being damaged by bird droppings.

  If the half cylinder is formed of an electrical insulator, ground faults through the half cylinder can be prevented even when the nesting material dropped by birds contacts the charging part. Examples of the electrical insulator include hard vinyl chloride, polyethylene, and polypropylene.

  Since the pole switch is suspended from the arm fixed to the power pole, if the half cylinder is provided above the arm, the nesting material dropped on the half cylinder does not get caught on the arm, It is possible to prevent the brace from inhibiting the slip of the nesting material.

  By providing projections on the surface where the half cylinder comes into contact with the arm metal, that is, on the lower surface, according to the interval of the arm metal, it is possible to prevent lateral displacement when the half cylinder is installed on the arm metal above the pole switch. In addition, it can be installed in a short period of time without requiring skill, such as eliminating the need for alignment with the armrest. Further, it is possible to prevent displacement after installation due to vibration or wind.

  Since the support body and arm for suspending the pole switch are usually made of iron, the half cylinder is attracted to the arm by the magnet by incorporating the magnet in the part where the half cylinder contacts the arm metal. . Thereby, only by putting a half cylinder on an armor at the time of construction of a bird harm prevention device, a half cylinder can be adsorbed by an armor and can prevent unnecessary fall.

  The protruding amount of the magnet portion is made larger than the protruding amount of the flange on the upper surface of the portion where the half cylinder contacts the arm metal. Thereby, even if the protrusion amount of the flange on the upper surface is small, it is possible to prevent the magnet portion from falling. Furthermore, even if a high voltage insulation component such as a high voltage pin insulator or arrester is mounted on the upper part of the armrest, it is possible to prevent the upper surface of the half cylinder from coming into contact with the flange.

  The installation interval of high voltage insulation parts such as high voltage pin insulators and arresters installed on the upper part of the armrest is equal to or greater than the interval between the two armrests. By shortening the length of the half cylinder relative to the width of the arm metal, it is possible to avoid contact between the half cylinder and the mounting bolt or the mounting band of the high-voltage insulating component.

  By providing a projection in the vertical direction on the top of the top of the half cylinder, even if there is snow on the top of the half cylinder due to snowfall in winter, the snow is divided by its own weight and slides down the curved surface of the half cylinder due to this projection. It is possible to prevent a ground fault due to snow accumulation on the prevention device and contact of the snow with the charging unit.

  As described above, according to the present invention, the pole switch installed on the utility pole or the armrest opening is covered with the half cylinder from above, and the upper surface of the half cylinder is smoothed. While preventing nesting in the arm opening, it is also possible to prevent nesting of the nesting material in the half cylinder and prevent nesting in the half cylinder. Thereby, it is possible to prevent power distribution accidents such as grounding due to bird nesting and fecal damage.

  In addition, by installing protrusions and magnets on the mounting surface of the semi-cylindrical body according to the support or arm that suspends the pole switch, it is easy to align it with the arm, and it can be dropped during installation. It can be installed in a short time without requiring skill.

  Hereinafter, the best mode for carrying out the nesting prevention apparatus according to the present invention will be described with reference to the drawings. In addition, although this embodiment shows the form which used the brace as a support body of a pole transformer and installed the nesting prevention apparatus on the pole transformer, it is not limited to this.

  1 is a perspective view of a pole switch provided with a nesting prevention device according to the present invention, FIG. 2 is a side view of a nesting prevention device and a brace provided with the nesting prevention device, and FIG. 3 is provided with a nesting prevention device. FIG.

  The nesting prevention device 4 is for preventing bird nesting on the pole switch 2 and the arm brackets 3a, 3b installed on the utility pole 1, and the arm metal 3a on which the pole switch 2 is suspended. It is set as the structure which provided the nesting prevention apparatus 4 of the half cylinder body in the upper part of 3b.

  The pole switch 2 is suspended on a brace 3a fixed on the pole of the utility pole 1 with a bolt or a band. A brace 3b parallel to the brace 3a is installed on the opposite side of the utility pole 1 from the brace 3a. The bird damage prevention device 4 is installed across the arm metal 3a and the arm metal 3b, and is fixed to the arm metal 3a and the arm metal 3b with gripping members such as an insulation lock, a coating band, and a bind wire.

  In addition, when a charging unit such as a tension double reed insulator 11 and an arrester is installed immediately above the pole switch 2, members such as a high-pressure pin insulator and an osteo are installed on the arm brackets 3 a and 3 b. May be.

  The nesting prevention device 4 is made of, for example, an electrical insulator such as polyethylene, and the nesting that birds have dropped on charging parts such as the electric wire 9, the main line 10, and the pole switch 2 that are charged with a high voltage of 6 kV or more. Even if the material comes into contact, a ground fault through the nesting prevention device 4 does not occur.

  The upper surface of the nesting prevention device 4 is set to a smooth surface having a maximum surface roughness (JIS B0601) of Ry ≦ 1 mm, and the nesting material dropped by the birds is applied to the upper surface by the momentum at the time of dropping or on the upper surface. It is designed to slide down by the natural wind force after it is placed.

  The nesting prevention device 4 has a durometer hardness (JIS K 7215) of D50 or higher, and the nesting material dropped by the birds is vigorously repelled and slid. The fall is prevented by preventing the fall of smoothness, and the nesting material that has fallen is prevented from biting and fixing.

  The strength of the nesting prevention device 4 withstands strong winds such as typhoons at the top of the utility pole 1 and withstands the fastening force of the gripping member by using a material having a bending strength of 50 MPa or more and a tensile strength of 30 MPa or more. It is considered as the strength to obtain.

  In addition, since the shape of the nesting prevention device 4 forms a semi-cylindrical body, even if soft and easily damaged polyethylene is used, there is no decrease in smoothness due to dropping of the nesting material onto the upper surface. The rubber normally used as an insulating material is particularly soft, and there is a risk that the falling nesting material will bite into and fix.

  As shown in FIG. 2, a protrusion 5 is provided on a side surface where the bird harm prevention device 4 is in contact with the arm metal 3 a and the arm metal 3 b. Thereby, at the time of construction of the bird harm prevention apparatus 4, the protrusion 5 enters between the arm brackets 3a and 3b, the positioning is simplified, and the installation work is not skillful.

  According to the said structure, since it does not shift | deviate to the left-right direction in a figure, the fall of the bird damage prevention apparatus 4 by the strong wind and vibration on a pillar can be prevented.

  In order to stably install the bird damage prevention device 4 on the upper surface of the arm metal 3a and the arm metal 3b, a protrusion 6 is provided. Further, a magnet 7 protrudes and is built in a part of the protrusion 6. Since the arm metal 3a, 3b is made of iron, the magnet 7 gives the arm metal 3a, 3b an attractive force. This suction force is set to such a strength that even if the bird harm prevention device 4 is temporarily placed on the upper surface of the arm metal 3a, 3b, it cannot be easily removed by wind or vibration. As a result, the bird damage prevention device 4 is placed on the armrests 3a and 3b at the time of construction and is not dropped even if the hand is released from the bird damage prevention device 4 during the time of fixing with an insulation lock or the like. become.

  Further, the protruding amount of the protruding portion 6 is set to ½ or less of the width of the arm metal 3a, 3b, and only the portion in which the magnet 7 is embedded protrudes further from the protruding portion 6. Thereby, even if protrusion members, such as a volt | bolt, are installed on the braces 3a and 3b, the protrusion part 6 of the bird damage prevention apparatus 4 hardly interferes with the protrusion member.

  Furthermore, the length B of the bird damage prevention device 4 is shorter than the mounting interval A between the two arm brackets 3a and 3b. Thereby, even if high voltage insulation members, such as a high voltage pin insulator and an arrester, are installed on the brace 3a, 3b by protrusion members, such as a volt | bolt, it will hardly interfere with the bird harm prevention apparatus 4.

  A protrusion 8 is provided in the longitudinal direction on the top surface of the bird harm prevention apparatus 4. Even if snow falls on the upper surface of the bird damage prevention device 4 due to snowfall, the snow is divided by biting into the protrusions 8 due to the weight of the snow, and slides down from the bird damage prevention device 4. Thereby, the ground fault accident of the charge part by snow accumulation can be prevented.

In addition, this invention is not limited to said embodiment, A change can be suitably added within the scope of the present invention. For example, the material of the bird damage prevention device 4 is not limited to polyethylene, and vinyl chloride, polycarbonate, or the like may be employed.

A perspective view when the present invention is attached to a bracelet Side view of the mounted state Top view of the mounted state

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Telephone pole 2 Switch on pole 3 Arm metal 4 Nest prevention device 5 Protrusion (lower surface)
6 Protrusion (side)
7 Magnet 8 Protrusion (top)

Claims (6)

  A nesting prevention device for preventing bird nesting on a pole switch or a brace installed on a utility pole, which is installed on the support or brace of the pole switch and has a smooth surface. A nesting prevention device comprising a half cylinder of an electrical insulator.   2. The nesting prevention apparatus according to claim 1, wherein the nesting prevention apparatus has protrusions for preventing lateral displacement on a contact surface with the support or armrest of the pole switch.   3. The nesting prevention apparatus according to claim 1, wherein the nesting prevention apparatus is provided with a magnet on a contact surface with a support body or a brace of the pole switch.   4. The nesting prevention apparatus according to claim 1, wherein the nesting prevention apparatus has a portion in which the magnet is installed as a protrusion in a brim shape with respect to the contact surface with the arm metal.   The nesting prevention apparatus according to claim 1, wherein the nesting prevention apparatus has a half cylinder whose length is shorter than a support interval of the pole switch or a brace.   The nesting prevention apparatus according to claim 1, wherein the nesting prevention apparatus has a protrusion formed at the apex portion of the half cylinder.

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