JP2006000035A - Rotary bird damage-preventing device for overhead cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary bird damage-preventing device which can easily be attached to even a long overhead cable and can be attached to the overhead cable so that each rotator is always rotated by the body weight of a bird, and whose weight and production cost can be reduced. <P>SOLUTION: This rotary bird damage-preventing device comprising an elastic plastic pipe 1 for surrounding the overhead cable 30 and the rotator 20 at whose both ends circular supports 22, 23 are disposed and in which a plurality of bars 24a to 24d are disposed between the outer edges of the supports 22, 23 in parallel to each other, wherein the pipe is inserted into the supports to rotatably support the rotator, is characterized by forming in the pipe longitudinal opening or closing rows 3 making it possible to insert the overhead cable into the pipe, disposing connectors 4, 5 at both the ends of the pipe, and forming the outer diameters of the connectors in a larger size than the inner diameters of the supports to prevent the movement of the rotator in the longitudinal direction. The rotator is preferably assembled in a cage-like shape by attaching a pair of plastic molded members 21 two-divided in the longitudinal direction to each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rotary bird damage prevention device for an aerial cable that prevents a bird from stopping on an aerial cable (wire) such as a power line or a communication line to cause a flashover or dung damage.

The bird harm prevention device described in the following Patent Document 1 relating to the invention of the present inventor is provided with a hook-shaped rotating body so as to be rotatable on the outer periphery of an aerial cable such as an electric wire. If it tries to stop, the rotating body rotates with the weight of the wild bird so that the wild bird does not stop and can effectively prevent bird damage.
Japanese Patent Publication No. 5-86125

  By the way, a long aerial cable was provided with a large number of the above rotating bodies connected. For example, since the aerial cable is suspended from a tower and is suspended, a large number of rotations located above the rotating body below it. There was a problem that the weight of the body accumulated and it would not rotate with the weight of the wild bird. Therefore, it was considered that a fixture was attached to an aerial cable about every 10 meters and the weight of the rotating body was loaded on the fixing tool so that the weight of a large number of rotating bodies would not be accumulated. In order to attach fixtures and rotating bodies in the middle of the tower, in the case of a steel tower, it is necessary to perform a dangerous airborne work in which an operator hangs on an aerial cable, and in the case of a utility pole, a bucket car can be used. A large amount of labor and cost were required to prevent bird damage, such as the inability to enter bucket trucks on farmland and cliffs.

  In addition, the conventional bird damage prevention device has a complicated structure such as inserting the both ends of a plurality of bars into a support and assembling it, and pivoting the support divided into two parts so that it can be opened and closed. There was a problem that the number of points was large and the adhesive strength between the different materials had to be weak, and the manufacturing cost was high.

The present invention is intended to solve the above-mentioned problems, and the invention according to claim 1 is characterized in that an elastic plastic pipe surrounding an aerial cable, and annular supports at both ends are provided, and an outer peripheral edge of the support. A rotary bird damage prevention device comprising a rotating body having a plurality of bars provided in parallel therebetween, wherein the rotating body is rotatably supported by inserting the pipe through the support body. In addition, the pipe forms a longitudinal opening and closing strip that allows insertion of an aerial cable inside, and is provided with a connecting body at both ends of the pipe, and further moves so that movement of the rotating body in the longitudinal direction is prevented. A blocking means is provided.
For this reason, if a plurality of pipes are connected to the aerial cable according to its length and a rotating body is provided for each pipe, even if the aerial cable is stretched in a suspended shape, Each rotating body can be kept in a state where it can be rotated by the weight of the bird without the load being accumulated.

According to the second aspect of the present invention, there is provided a rotating plastic pipe that surrounds the aerial cable, an annular support at both ends, and a plurality of bars provided in parallel between the outer peripheral edges of the support. A rotary bird damage prevention device in which the rotating body is rotatably supported by inserting the pipe into the support body, and an aerial cable can be inserted into the pipe inside And a connecting body is provided at both ends of the pipe, and the rotating body is assembled in a bowl shape by joining a pair of substantially identical plastic moldings divided in the longitudinal direction. It is characterized by the above.
For this reason, it can be easily assembled into a strong component with few rotating bodies, the manufacturing cost can be reduced, and the weight can be reduced.

According to a third aspect of the present invention, in the rotary bird damage prevention device for an aerial cable according to the first or second aspect, the outer diameter of the connecting body of the pipe is supported in order to prevent the rotary body from moving in the longitudinal direction. It is characterized by being formed larger than the inner diameter of the body.
For this reason, each rotating body can be kept in a state where it can be rotated by the weight of the bird without the load of the rotating body being accumulated on the rotating body below.

According to a fourth aspect of the present invention, in the rotary bird damage prevention device for an aerial cable according to the second or third aspect, an engagement hole and an engagement claw are integrally formed in a plastic molded product, and the engagement is performed. It is characterized in that it can be attached to each other.
For this reason, the assembly of the rotating body is facilitated, and the mounting work can be quickly performed even on the utility pole or the steel tower.

The invention according to claim 5 is the rotary bird damage prevention device for the aerial cable according to any one of claims 1 to 5, wherein a male connector is formed at one end of the pipe and a female connector is connected to the other end. It is characterized by forming a body.
For this reason, the pipes can be easily connected to each other, and the mounting effort on the utility pole or the steel tower is reduced.

The invention described in claim 6 is characterized in that, in the rotary bird damage prevention device for an aerial cable according to any one of claims 1 to 5, the inner surface of the pipe is formed in an uneven shape.
For this reason, a gap is formed on the outer peripheral surface of the aerial cable without the inner surface of the pipe coming into contact with the solid surface, so that retention of rainwater or the like is prevented and drying is facilitated to prevent the aerial cable from being rusted.

  The rotary bird damage prevention device can be easily attached to a long aerial cable, and each rotary body is always attached to rotate at the weight of the bird. Also, weight and manufacturing costs are reduced.

  Next, an embodiment of the bird harm prevention device of the present invention will be described. FIG. 1 shows an elastic plastic pipe having a length of several tens of centimeters to several meters surrounding an aerial cable. The pipe 1 is formed into a cylindrical shape by extruding an elastic plastic such as polypropylene, and as shown in FIGS. A longitudinal opening / closing strip 3 comprising a fitting groove 3a and a projection 3b is formed on one side of the pipe 1, and the fitting groove 3a and the projection 3b are separated from each other to form one pipe 1. The side opens so that the aerial cable 30 can be inserted inside the pipe 1. Further, a male connector 4 molded by plastic injection molding is fixed to one end of the pipe 1, and a female connector 5 also molded by plastic injection molding is fixed to the other end of the pipe 1. ing. The male connector 4 has a notched cylindrical shape, and an annular protrusion 6 is formed on the outer periphery of the tip portion, and a small protrusion 7 is formed on the inner periphery. Then, a pair of tabs 8 are integrally formed on the notched edge of the notch, and the male connector 4 is connected to the pipe by fitting the small protrusion 7 into a stop hole 9 opened at one end of the pipe 1. It is fixed to one end of 1 so as not to be removable. Similarly, the female connector 5 has a notched cylindrical shape, and is formed with an annular groove 10 and a small protrusion 11 with which the annular protrusion 6 engages on the inner periphery, and a flange 12 on the outer periphery of both ends. And a pair of tabs 13 are formed integrally with the notched cylindrical notch edge. Then, by fitting the small protrusion 11 into a stop hole 14 provided at the other end of the pipe 1, the female connector 5 is fixed to the other end of the pipe 1 so as not to be removed. Reference numerals 8a and 13a are through holes formed in the tab 8 and the tab 13, and reference numeral 14 is a plastic retaining pin that can be inserted into the through holes.

  On the other hand, as shown in FIGS. 5 and 6, the rotating body 20 is formed in a bowl shape by joining together a pair of plastic molded articles 21 having the same shape divided in the longitudinal direction. The molded product 21 has semicircular arc plate-like supports 22 and 23 formed at both ends, and a plurality of odd-shaped cross-section bars 24a to 24d are arranged in parallel between the outer peripheral edges of the supports as shown in FIG. Is formed. Further, concentric arc-shaped protrusions 25 and 26 are integrally formed on the outer surfaces of the supports 22 and 23. Reference numeral 27 denotes an arc-shaped reinforcing rib formed integrally so as to connect the bars at an intermediate portion of the bar. In addition, a plurality of engagement holes 28 are formed at appropriate intervals in the bar 24a located at one edge, and an engagement claw 29 that can match the engagement hole is formed in the bar 24d located at one edge. It becomes. The engaging claw 29 is formed in a bifurcated shape so that the tip can be opened and closed by elasticity.

  When the aerial cable 30 is surrounded by the pipe 1, since the pipe 1 is made of an elastic plastic, the opening / closing strip 3 on one side is opened, and the aerial cable 30 can be inserted inside thereof. Then, by closing the open / close strip 3, the aerial cable is surrounded by the pipe 1, and then a pair of plastic molded products 21 are arranged so as to sandwich the pipe 1 from both sides as shown in FIG. By fitting the joint claw 28 into the engaging hole 27 of the opposed plastic molded product 21, the inner peripheral edges of the supports 22 and 23 are brought into sliding contact with the outer peripheral surface of the pipe 1, and the bowl-shaped rotating body 20 is It is provided around the pipe 1 so as to be rotatable. The flange 20 is formed in the female coupling body 5 so that the outer diameter of the female coupling body is larger than the inner diameters of the support bodies 22 and 23 so that the rotating body 20 comes out of the pipe. Is prevented. Then, the protrusions 25 and 26 are brought into sliding contact with the end face of the female connector 5. As shown in FIG. 8, a plurality of rotating bodies 20 (four in FIG. 8) can be provided for one pipe 1, and adjacent rotating bodies are in sliding contact with each other's ridges 25 and 26. .

  As described above, the bird damage prevention device of the present invention is provided with the pipe 1 surrounding the aerial cable 30, the rotary body 20 is rotatably provided on the outer periphery of the pipe, and the longitudinal direction of the rotary body by the connecting body 5 of the pipe 1. Therefore, for long aerial cables, if the pipes of appropriate lengths are connected according to the length of the cables, and the rotary bodies 20 are respectively provided rotatably, Even if an aerial cable is stretched in a suspended shape, the load of the rotating body is applied to the connecting body of the pipe, so that the load is not accumulated on the lower rotating body, and each rotating body is set according to the weight of the bird. Can be kept in a state where it can rotate.

Also, by combining a pair of plastic molded parts of the same shape divided into two in the vertical direction, a strong rotating body can be easily assembled from a small number of parts, so that the manufacturing cost is greatly reduced and the rotating body The weight of the cable is reduced and the gravity load on the overhead cable is also reduced.
In addition, if a worker climbs a steel tower, a utility pole, or other structures without requiring an aerial work or a bucket car, many rotating bodies can be easily attached to long aerial cables while connecting pipes from the end. Therefore, the installation cost of the bird damage prevention device is reduced.
Further, by providing the vertical streaks 2 on the inner surface of the pipe 1, in the case of a bare metal wire such as an ultra-high-voltage transmission line, rainwater remains at the contact portion between the pipe and the electric wire, and rust is easily generated. Can be prevented.

In addition, by interposing a ring (not shown) for reducing friction between the inner periphery of the supports 22 and 23 and the outer peripheral surface of the pipe 1, it is possible to support the rotating body 20 so that it can rotate more lightly. It is.
In addition, the pipe 1 may have a net-like or porous shape as long as the pipe 1 can rotatably support the rotating body 20. Further, only one rotating body may be provided in one pipe, or a plurality of rotating bodies may be provided as long as the rotational performance is maintained without excessively loading the rotating body.

The perspective view of the pipe of the bird harm prevention device which shows the Example of this invention. The expansion perspective view of the connection part of the pipe of FIG. The longitudinal cross-sectional view of the connection part of the bird harm prevention device which shows the Example of this invention. AA line sectional view of Drawing 3. The disassembled perspective view of the rotary body of the bird harm prevention device which shows the Example of this invention. The perspective view of the rotary body of the bird harm prevention device which shows the Example of this invention. The perspective view of the bird harm prevention device which shows the Example of this invention. The side view of the bird harm prevention device which shows the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pipe 2 Concavity and convexity 3 Opening and closing strip 4 Male coupling body 5 Female coupling body 14 Stopping pin 20 Rotating body 21 Plastic molded product 22, 23 Support body 24a-24d Bar 25, 26 Projection 27 Reinforcement rib 28 Engagement hole 29 Engagement Joint claw 30 aerial cable

Claims (6)

  An elastic plastic pipe surrounding the aerial cable; and a rotating body provided with annular supports at both ends and a plurality of bars provided in parallel between the outer peripheral edges of the support body. A rotary bird damage prevention device in which the rotating body is rotatably supported by inserting a pipe, wherein the pipe forms a vertical opening and closing strip that allows an aerial cable to be inserted inside. In addition, a rotating bird damage prevention apparatus for an aerial cable, characterized in that a connecting body is provided at both ends of the pipe, and a movement blocking means is provided so as to prevent movement of the rotating body in the longitudinal direction.   An elastic plastic pipe surrounding the aerial cable; and a rotating body provided with annular supports at both ends and a plurality of bars provided in parallel between the outer peripheral edges of the support body. A rotary bird damage prevention device in which the rotating body is rotatably supported by inserting a pipe, wherein the pipe forms a vertical opening and closing strip that allows an aerial cable to be inserted inside. In addition, a connecting body is provided at both ends of the pipe, and the rotating body is assembled in a bowl shape by joining together a pair of substantially identical plastic molded parts divided into two in the longitudinal direction. Rotating bird damage prevention device for overhead cables.   3. The rotary bird damage prevention for an aerial cable according to claim 1 or 2, wherein the outer diameter of the coupling body of the pipe is formed larger than the inner diameter of the support body in order to prevent the rotation body from moving in the longitudinal direction. vessel.   The rotary bird damage prevention device for an aerial cable according to claim 2 or 3, wherein an engagement hole and an engagement claw are integrally formed in a plastic molded product and can be attached to each other by the engagement.   The rotary bird damage prevention device for an aerial cable according to any one of claims 1 to 4, wherein a male connector is formed at one end of the pipe and a female connector is formed at the other end.   The rotary bird harm prevention device for an aerial cable according to any one of claims 1 to 5, wherein the inner surface of the pipe is formed in an uneven shape.

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