JP7238652B2 - Bird damage prevention device for hugging arms - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bird damage prevention tool for a support arm. In particular, a bird damage prevention device for a holding arm suitable for indirect hot-line work that can perform electrical work in an uninterrupted state using an insulated operating rod, and is a holding arm fixed to a utility pole by birds such as crows or pigeons. The present invention relates to the structure of a bird damage preventive tool for holding arms that prevents bird damage caused by nesting on gold.

For example, a utility pole is equipped with a square pipe-shaped cross arm in a substantially horizontal state. The cross arm supports the overhead power line through the pin insulator. When birds such as crows or pigeons build nests on the cross arm fixed to the electric pole, there is concern that bird damage such as adhesion of bird feces to the electric pole will occur. For this reason, it is known to prevent birds from flying by by erecting a plurality of umbrella frame-shaped bird damage prevention devices, so-called umbrella bone-shaped bird damage prevention devices ( For example, see Patent Document 1).

On the other hand, it is also known to prevent birds from flying by installing a so-called needle mountain-shaped bird damage prevention device with a forest of needles with sharp tips on the upper surface of the cross arm (for example, patent Reference 2).

JP 2014-117269 A JP-A-11-289644

FIG. 11 is a side view showing the configuration of an umbrella bone type bird damage prevention device according to the prior art. FIG. 12 is a front view showing an enlarged state of an umbrella bone type bird damage prevention device according to the prior art. 11 and 12 of the present application correspond to FIGS. 1 and 2 of Patent Document 1. FIG.

Referring to FIG. 11 or FIG. 12, the umbrella bone type bird damage prevention device 8 according to the prior art includes a cylindrical main shaft member 81 extending straight and two annular branch members 82 . The bird damage prevention device 8 also has a plurality of branch rods 83 with different lengths and two tubular sleeves 84 .

11 or 12, the branch member 82 allows the main shaft member 81 to be inserted therein. A proximal end portion of the branch rod 83 is fixed to the outer circumference of the branch member 82 . The plurality of branch rods 83 are radially arranged in the centrifugal direction of the branch member 82 and are arranged such that their tip portions are inclined downward from the branch member 82 .

11 or 12, the sleeve 84 has the main shaft member 81 inserted therein. By interposing one sleeve 84 between the base end of the main shaft member 81 and the lower branch member 82, the height from the base end of the main shaft member 81 to the lower branch member 82 can be defined. Further, by interposing the other sleeve 84 between the upper branching member 82 and the lower branching member 82, the interval between the upper branching member 82 and the lower branching member 82 can be defined. Further, by fastening a ferrule 81a to the tip of the main shaft member 81, the constituent members of the bird damage prevention device 8 can be integrated.

Referring to FIG. 11 or 12 , the bird damage prevention device 8 further includes a support fitting 85 . The support fitting 85 has an L-shaped bent support member 85a and an L-shaped bent bolt member 85b. Further, the support fitting 85 has a nut member 85c and a triangular pressing member 85d.

Referring to FIG. 12, the support member 85a has an insertion hole, through which the base end of the main shaft member 81 can be inserted, opened on the tip end side of one piece. By inserting the base end portion of the main shaft member 81 through the insertion hole and fastening the nut member 91n to the base end portion of the main shaft member 81, the bird damage prevention device 8 can be fixed to the front end portion of the support member 85a. The base end side of one piece of the support member 85a is placed on the upper surface of the arm A, and the other piece of the support member 85a is arranged to face the side surface of the arm A. As shown in FIG.

Referring to FIG. 12, one end of the bolt member 85b is engaged with one piece of the support member 85a. Also, the bolt member 85b has a male screw portion screwed to the other end side. In a state in which the other piece of the support member 85a and one end of the bolt member 85b are arranged to face both side surfaces of the cross arm A, the other end of the bolt member 85b passes through the pressing member 85d and extends through the support member 85a. It protrudes from the other piece. By fastening the nut member 85c to the male threaded portion of the bolt member 85b, the bird damage prevention device 8 can be supported on the arm A through the support fitting 85. As shown in FIG. The upper surface of the pressing member 85d is in contact with the lower surface of the cross arm A. As shown in FIG.

Referring to FIG. 12, cross arm A is cantilevered on utility pole P. As shown in FIG. Moreover, the cross arm A is arranged in a substantially horizontal state. The cross arm A has three pin insulators Pi arranged at approximately equal intervals. Referring to FIG. 11, a pair of arms A and A are arranged substantially parallel to each other with a utility pole P interposed therebetween. A pair of cross arms A and A placed across the utility pole P is called a so-called cross arm. A cross arm refers to a form in which two single cross arms are sandwiched between a utility pole P.

Referring to FIG. 11 or FIG. 12, the bird damage prevention device 8 according to Patent Document 1 is arranged in the central portion of a pair of adjacent pin insulators Pi and Pi, and is arranged between a pair of cross arms A and A facing each other. Since they are arranged in the central part, the tips of the plurality of branch rods 83 do not contact the pin insulators Pi, and the plurality of branch rods 83 are arranged radially so as to cover the area inside the four pin insulators Pi. , it is possible to reliably prevent nesting regardless of the size of birds.

Further, referring to FIG. 11 or FIG. 12, the bird damage prevention tool 8 according to Patent Document 1 can be provided with a plurality of branch rods 83 spaced apart in the vertical direction. can be made smaller to more reliably prevent nesting by flying birds.

FIG. 13 is a perspective view showing the configuration of a needle-shaped bird damage prevention device according to the prior art, and is a diagram showing a state in which the needle-shaped bird damage prevention device is attached to a cross arm. FIG. 14 is a perspective exploded view showing the configuration of a needle-shaped bird damage prevention device according to the prior art.

FIG. 15 is a right side view of the pinion-shaped bird damage preventive device according to the prior art, and is a state change diagram showing a procedure for attaching the pinion-shaped bird damage prevention device to a cross arm. FIG. 16 is a mounting diagram of a cross arm to which a pincushion-shaped bird damage prevention device according to the prior art is to be attached.

13 and 14 of the present application correspond to FIGS. 5 and 2 of Patent Document 2. FIG. 15 of the present application corresponds to FIG. 4 of Patent Document 2. FIG.

Referring to FIG. 13 or FIG. 14 , the pincushion-shaped bird damage prevention device 9 according to the prior art is composed of a prevention device main body 91 and a C-shaped support fitting 92 . The preventive device main body 91 can prevent birds from flying into the cross arm A and nesting. The protector main body 91 is molded from an insulating synthetic resin. The support fitting 92 can attach the preventive tool main body 91 to the arm A and support the preventive tool main body 91 .

Referring to FIG. 13 or FIG. 14, the preventive tool main body 91 includes a strip plate-like grid plate 91g and a plurality of sharp needles 91p. The lattice plate 91g is composed of a plurality of vertical beam members 911 extending in the longitudinal direction and a plurality of horizontal beam members 912 substantially perpendicular to the vertical beam members 911 . The needle body 91 p is erected from the intersection of the vertical beam member 911 and the horizontal beam member 912 or from the edge of the horizontal beam member 912 .

13 or 14, the support fitting 92 has a pair of gripping pieces 92a and 92b and a connecting piece 92c. A pair of gripping pieces 92a and 92b are arranged substantially parallel with a predetermined interval. A pair of gripping pieces 92a and 92b have bolt insertion holes 92h at their distal ends. The connecting piece 92c connects the base ends of the pair of gripping pieces 92a and 92b.

Referring to FIG. 13 or 14, the cross arm A can be introduced from the lateral direction between the pair of gripping pieces 92a and 92b. After introducing the cross arm A between the pair of gripping pieces 92a and 92b, the bolt member 93 is inserted into the bolt insertion hole 92h, and the nut member N is fastened to the tip end side of the bolt member 93. can be fixed to arm A.

Referring to FIG. 18 or 19, the support fitting 92 further includes a rectangular clamping plate 94. As shown in FIG. The clamping plate 94 is welded to the upper surface of one of the gripping pieces 92a. The clamping plate 94 has a pair of hook-shaped fitting pieces 94a, 94a erected from one side thereof. Also, the clamping plate 94 has a pair of hook-shaped locking pieces 94b, 94b erected from the other side. The fitting piece 94a and the locking piece 94b are arranged to face each other.

13 or 14, the distance between the fitting piece 94a and the locking piece 94b is such that a pair of vertical crosspiece members 911, 911 formed on the protector main body 91 are fitted. . After fitting one of the vertical beam members 911 to the pair of fitting pieces 94a, 94a, the other vertical beam member 911 is pushed into the pair of locking pieces 94b, 94b, so that the preventive tool main body 91 is held by the clamping plate 94. can be attached to

Next, a procedure for attaching the bird damage prevention device 9 thus constructed to the cross arm A will be described. First, referring to FIG. 13, a long grid plate 91g is cut so as to match the length from the pin insulator Pi projecting from the cross arm A to the end of the cross arm A to prevent The tool body 91 is measured. Then, the holding plate 94 of the support fitting 92 is attached to the lower surface of the lattice plate 91g at the central position of the preventive device main body 91 measured in this way in the longitudinal direction.

As shown in FIG. 15(A), the mounting procedure described above places the support bracket 92 below the preventive device main body 91 . Next, by pressing the lattice plate 91g against the clamping plate 94 of the support fitting 92, a pair of vertical bars 911 can be fitted between the pair of fitting pieces 94a (see FIG. 13). ). Then, as shown in FIG. 15(B), the support fitting 92 can support the preventive tool main body 91 .

Next, referring to FIG. 15(C), the connecting piece 92c of the support metal fitting 92 is clamped by the tool portion 52 provided at the tip of the insulation operating rod 5. Next, referring to FIG. Next, by manipulating the insulation operating rod 5, as shown in FIG. 15(D), the cross arm A is introduced between the pair of gripping pieces 92a and 92b, and the support fitting 92 is latched.

Next, referring to FIG. 15(E), using the insulating operation rod 5, the bolt member 93 is inserted from above into the bolt insertion holes 92h opened in the gripping pieces 92a and 92b. A nut member N is attached to a box wrench attached to the tip of an insulation operation rod (not shown), and the insulation operation rod (not shown) is operated to remove the bolt from the lower side of the gripping piece 92b as shown in FIG. 15(F). A nut member N can be fastened to the member 93 . As a result, the pincushion-shaped bird damage prevention device 9 can be fixed to the upper surface of the cross arm A, as shown in FIG.

Comparing the umbrella-bone type bird damage prevention device 8 shown in FIG. 11 or 12 with the pincushion-shaped bird damage prevention device 9 shown in FIGS. Compared to the pincushion-shaped bird damage prevention tool 9, the structure is complicated, so the unit price is generally high. Therefore, it is preferable to arrange a plurality of pincushion-shaped bird damage prevention devices 9 on the cross arm in terms of installation cost.

Further, comparing the umbrella-bone type bird damage prevention device 8 with the pincushion-shaped bird damage prevention device 9, the umbrella-bone type bird damage prevention device 8 has a plurality of bird damage prevention devices compared to the pincushion-shaped bird damage prevention device 9. The outer shape of the branch rod 83 is large, and it is often difficult to use an insulated operation rod for indirect live line work to attach it to a cross arm in which a rim line bypassing the cross arm is arranged. be.

On the other hand, referring to FIG. 16, the utility pole P supports the central portion of the cross arm A. As shown in FIG. Two pin insulators Pi and Pi are arranged on one end side of the cross arm A. As shown in FIG. One pin insulator Pi is arranged at the end of the cross arm A on the one end side. The other pin insulator Pi is arranged on the one end side of the cross arm A near the utility pole P. As shown in FIG. On the other end side of the cross arm A, one pin insulator Pi is arranged at the end.

Also, referring to FIG. 16, the utility pole P is arranged with an inclined arm tie At. The arm tie At is connected to an arm tie band Bt tightened to the utility pole P at one end thereof. The other end of the arm tie At is connected to the center of the cross arm A on the other end side. By supporting the cross arm A on the utility pole P with the arm tie At, the inclination of the cross arm A can be suppressed.

By the way, as described above, the pincushion-shaped bird damage prevention device 9 according to Patent Document 2 attaches the support metal fitting 92 to the central position of the prevention device main body 91 in the longitudinal direction (see FIG. 13), and then attaches the support metal fitting 92 to the arm. It is fixed to Gold A. Therefore, referring to FIG. 16, on the other end side of the cross arm A, the support fitting 92 interferes with the arm tie At, making it difficult to attach the bird damage prevention device 9 .

Referring to FIG. 16, the bird damage prevention device 9 is lowered to the ground so that the support metal fittings 92 do not interfere with the arm tie At, the attachment position of the support metal fittings 92 with respect to the prevention device body 91 is corrected, and the bird damage prevention device is mounted again. Since the preventive tool 9 is attached to the cross arm A, there is a problem that the work efficiency is lowered.

Using an insulated operating rod for indirect live line construction, a new shape of a bird damage prevention for a cross arm that can be easily attached to a cross arm reinforced with an arm tie and that can prevent nesting across a pair of cross arms Equipment is required. And the above can be said to be the subject of the present invention.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an insulated operation rod for indirect hot-line construction can be used to easily attach a holding arm reinforced with arm ties, and a pair of holding arms. To provide a new-shaped bird damage prevention device for a cross arm capable of preventing nest building over a long period of time.

The present inventor fixed a support metal fitting to one of the arm ties reinforced with an arm tie, and fixed the chevron-shaped prevention tool body having inclined surfaces in opposite directions to the support metal fitting in the longitudinal direction of one of the arm ties. The above problem can be solved by slidably connecting with the support fitting along the , and opening the folded prevention tool main body across the pair of arms with the top part as the center of rotation. Based on this, the present inventors have invented a new bird damage prevention device for arm braces as follows.

(1) The bird damage preventive device for a arm according to the present invention is a bird damage preventive device for a arm that can be installed straddling one arm and the other arm that has at least one end reinforced with an arm tie. a first sliding plate whose bottom is rotatably connected to a strip-like substrate; a second sliding plate whose top is connected to the top of said first sliding plate so as to be openable and closable; A chevron-shaped preventer main body having a pair of arm members rotatably connected to the bottom of the first sliding plate and having the other end slidably connected to the bottom of the second sliding plate, and one of the arms and a C-shaped support fitting having a pair of gripping pieces facing each other so that the base can be introduced from the side surface thereof, and a connecting piece connecting the base ends of the gripping pieces. It has a rectangular guide groove drilled from the bottom surface, and the support fitting is erected from one of the gripping pieces and fits into the guide groove to support the protector body, and the protector body is supported. It has a rectangular guide rail that guides the arm slidably along the longitudinal direction, and a first grip part that protrudes from the other grip piece and can be gripped by an insulated operating rod for indirect hot wire construction. ing.

(2) The second sliding plate has a second grip portion on the bottom side that can be gripped by an insulated operating rod for indirect live line construction, and the second grip portion is operated to move the bottom portion of the second sliding plate. has moved toward one end of the arm member, the first sliding plate and the second sliding plate can be closed to each other, and the protector main body can be erected from one of the arm members, and the second In a state in which the grip portion is operated to move the bottom portion of the second sliding plate toward the other end portion of the arm member, the first sliding plate and the second sliding plate are opened from each other, and the prevention device Preferably, the body can be placed across one arm and the other arm.

(3) When the first sliding plate and the second sliding plate are opened from each other, the first sliding plate forms a first slope on which the nesting material slides, and the second sliding plate is the nesting material. preferably forms the second slope on which it slides.

(4) The guide groove has a V groove formed on one inner wall along the longitudinal direction and an arcuate groove formed on the other inner wall along the longitudinal direction, and the guide rail has one side surface. It is preferable to have a mountain-shaped ridge that is formed on the side surface and fits into the V-groove, and a semi-arc-shaped ridge that is formed on the other side surface and fits into the arc-shaped groove.

(5) The support fitting includes a rotating shaft having both ends rotatably connected to one of the gripping pieces, a bolt member having a T-shaped head joined to the rotating shaft, and the bolt member. one or more nut members that can be screwed together with the threaded portion; It is preferable that the support fitting can be fixed to one of the holding arms by fastening the nut member to the other gripping piece from the state where the bolt member is introduced into the portion.

A bird damage prevention device for a hugging arm according to the present invention comprises a chevron-shaped prevention device body in which a closing link is formed by a first sliding plate, a second sliding plate, and a pair of arm members, and a C-shaped device that can be fixed to the hugging arm. and a support metal fitting, wherein the main body of the protector has a rectangular guide groove, the support metal fitting fits into the guide groove, and guides the main body of the protector slidably along the longitudinal direction of the cross arm. Since the rail is provided, the bird damage prevention device for the arm can be installed on the arm without interfering with the arm tie.

In addition, in the bird damage prevention tool for the armrests according to the present invention, the body of the protection tool in the folded state is opened across the pair of armrests with the top portion as the center of rotation, so that birds, etc. It is possible to prevent nesting over the cross arm.

1 is a perspective view showing the configuration of a bird damage prevention tool for a arm brace according to an embodiment of the present invention; FIG. It is the perspective view which expanded the principal part of the bird damage prevention tool for arm brackets by the said embodiment. 3A is a front view of the support metal fitting, FIG. 3B is a plan view of the support metal fitting, and FIG. 3(C) is a right side view of the support metal fitting, FIG. 3(D) is a left side view of the support metal fitting, and FIG. 3(E) is a bottom view of the support metal fitting. FIG. 4 is a front view showing the use state of the bird damage prevention device for the arm according to the embodiment, and is a state diagram before the bird damage prevention device for the arm is attached to one of the arms. FIG. 4 is a front view showing a usage state of the bird damage prevention device for the arm according to the embodiment, and is a state view in which the bird damage prevention device for the arm is attached to one of the arms. FIG. 10 is a front view showing the usage state of the bird damage prevention device for the support arm according to the embodiment, and is a view showing a state in which the chevron-shaped prevention device main body of the bird damage prevention device for the support arm is tilted toward the other support device. is. FIG. 10 is a front view showing the usage state of the bird damage prevention device for the arm according to the embodiment, wherein the mountain-shaped preventer body provided in the bird damage prevention device for the arm is attached to one arm and the other arm. It is a state figure which straddled and installed. FIG. 4 is a mounting diagram of the arm to which the bird damage prevention device for the arm is to be attached according to the embodiment; FIG. 4 is a front view showing the configuration of an insulating operation rod for operating the bird damage prevention device for the arm bracket according to the present invention; FIG. 10 is an enlarged front view of the main part of FIG. 9; FIG. 2 is a side view showing the configuration of a conventional umbrella bone-type bird damage prevention device. FIG. 2 is a front view showing an enlarged state of an umbrella-bone type bird damage prevention device according to the prior art; FIG. 10 is a perspective view showing the configuration of a pincushion-shaped bird damage prevention device according to the prior art, and is a state diagram showing the pinion-shaped bird damage prevention device attached to a cross arm. 1 is a perspective exploded view showing the configuration of a needle-shaped bird damage prevention device according to the prior art; FIG. It is a right side view of the pincushion-shaped bird damage prevention tool by a prior art, and is a state change figure which shows the procedure which attaches a pincushion-shaped bird damage prevention tool to a cross arm. FIG. 2 is a mounting diagram of a cross arm to which a pincushion-shaped bird damage prevention device according to the prior art is to be attached.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

Before describing the structure of the bird damage preventive device for the armrest according to the present invention, the structure of the insulated operation rod for operating the bird damage preventive device for the support arm according to the present invention will be described.

(Configuration of insulated operating rod)
9 or 10, the insulated operating rod 5 is composed of an elongated operating rod 51 and a tool portion 52. As shown in FIG. The insulating operating rod 5 also has an operating rod 53 . The tool portion 52 is attached to the tip portion of the operating rod 51 .

9 or 10, the tool portion 52 comprises a pair of curved gripping arms 5a and 5b that open and close. One of the gripping arms 5a is a fixed arm with a base end fixed, and the other gripping arm 5b rotates around a rotating shaft 5c provided at the base end of the one gripping arm 5a. It has a movable arm.

Referring to FIG. 9, an operating rod 53 is held along the operating rod 51. As shown in FIG. The tip of the operating rod 53 is rotatably connected to the other gripping arm 5b. By operating the operating lever 54 provided at the proximal end of the operating rod 53, the gripping arm 5b can be opened and closed with respect to the gripping arm 5a. The insulated operating rod 5 is made of a plastic pipe or the like having insulating properties in the intermediate portions of the operating rod 51 and the operating rod 53, and ensures insulation suitable for the indirect live wire construction method.

Referring to FIG. 9, when the operating lever 54 is gripped and brought closer to the operating rod 51, the gripping arm 5b can be closed with respect to the gripping arm 5a. When the operating lever 54 is released, the force of a spring (not shown) connected to the operating lever 54 can open one gripping arm 5a with respect to the other gripping arm 5b. 9 or 10 shows a state in which the other gripping arm 5b is opened to the maximum with respect to the gripping arm 5a.

9 or 10, one gripping arm 5a protrudes a tapered gripping claw 51a. The gripping claws 51a form a gripping surface 50a. The gripping surface 50a is formed substantially parallel along the centrifugal direction from the center of rotation of the rotating shaft 5c. Similarly, the other gripping arm 5b protrudes a tapered gripping claw 51b. The gripping claws 51b form a gripping surface 50b. The gripping surface 50b is arranged with a predetermined open angle from the gripping surface 50a. 9 or 10, gripping the operating lever 54 allows the gripping surface 50b to approach the gripping surface 50a.

The insulated operating rod 5 shown in FIG. 9 or 10 is a so-called "insulated manipulator" capable of gripping a high-voltage distribution line or the like placed at a high place with a pair of gripping claws 51a and 51b.

[Structure of bird damage prevention tool for hug arm]
(overall structure)
Next, the configuration of the cross arm bird damage prevention device according to one embodiment of the present invention will be described. Referring to FIGS. 1 to 8, a bird damage prevention device for a cross arm (hereinafter referred to as a bird damage prevention device) 10 according to one embodiment of the present invention can be installed on a cross arm An. The cross arm An is mounted on the utility pole P in a substantially horizontal state. One end of the arm support An is reinforced with an arm tie At (see FIG. 8).

In addition, the cross arm An according to the embodiment is the same as the cross arm A shown in the prior art, but for convenience of explanation, the names and symbols of the components are changed to distinguish them.

With reference to FIGS. 1 to 8, by installing the bird damage prevention tool 10 straddling a pair of arms An, An, a bird or the like can fly and straddle the pair of arms An, An. It can prevent nesting.

Referring to FIGS. 1 to 8, a bird damage prevention device 10 includes a prevention device body 1 and a C-shaped support fitting 2. As shown in FIG. The protector main body 1 includes a strip plate-shaped base plate 1b, a first sliding plate 11, a second sliding plate 12, and a pair of arm members 13,13.

1 to 7, the first sliding plate 11, the second sliding plate 12 and the pair of arm members 13, 13 form a triangular closing link. This closing link is rotatably connected to the substrate 1b. It is preferable that the substrate 1b and the link member are made of an insulating synthetic resin.

1 to 8, the support fitting 2 has a pair of gripping pieces 2a and 2b and a connecting piece 2c. A pair of gripping pieces 2a and 2b are arranged substantially parallel with a predetermined interval. A cross arm An can be introduced into the pair of gripping pieces 2a and 2b from the side thereof. The connecting piece 2c connects the base ends of the pair of gripping pieces 2a and 2b.

Referring to FIG. 2 or FIG. 3A, the substrate 1b has a rectangular guide groove 11d. The guide groove 11d is bored from the bottom surface of the substrate 1b. On the other hand, the support bracket 2 has rectangular guide rails 21 . The guide rail 21 is erected from one gripping piece 2a via a support 2p.

2 or 3A, the guide rail 21 can be fitted into the guide groove 11d. By fitting the guide rail 21 into the guide groove 11d, the preventive tool main body 1 can be supported. Further, by fitting the guide rail 21 into the guide groove 11d, the preventive tool main body 1 can be slidably guided along the longitudinal direction of the arm bracket An.

For example, referring to FIG. 2, the guide groove 11d can be composed of a V groove 11v and an arcuate groove 11s. The V-groove 11v is formed on one inner wall along the longitudinal direction of the guide groove 11d. Also, the arcuate groove 11s is formed in the other inner wall along the longitudinal direction of the guide groove 11d.

On the other hand, referring to FIG. 2, the guide rail 21 has a mountain-shaped ridge 21m that fits into the V-groove 11v on one side surface. Further, the guide rail 21 has a semi-arc-shaped ridge 21s that fits into the arc-shaped groove 11s formed on the other side surface. The guide rail 21 can be introduced into the guide groove 11d by opening the V-groove 11v and the arcuate groove 11s in opposite directions at the central portion of the guide groove 11d. Preferably, the mountain-shaped ridges 21m are first introduced into the V-grooves 11v, and the semi-arc-shaped ridges 21s are introduced into the arc-shaped grooves 11s later.

2 to 5, the support metal fitting 2 has a first gripping portion 22 protruding from the other gripping piece 2b. As an entity, the first gripping portion 22 is formed of a rectangular plate welded to the outer surface of the connecting piece 2c (see FIG. 3(D)). The first gripping portion 22 can be gripped by the insulated operating rod 5 for indirect hot wire construction (see FIG. 9 or 10).

Referring to FIGS. 1 to 8, a bird damage prevention device 10 according to the embodiment includes a prevention device main body 1 having a band plate-shaped base plate 1b and a triangular closing link rotatably connected to the base plate 1b, and a holding arm. and a C-shaped support metal fitting 2 that can be fixed to An. Since the guide rail 21 along which the protector body 1 is slidably guided is provided, the bird damage protector 10 can be installed on the arm tie An without interfering with the arm tie At (see FIG. 8).

(Structure of support bracket)
Next, the configuration of the support fitting 2 according to the embodiment will be described. 1 to 5, the support fitting 2 further includes a pivot shaft 23s, a bolt member 23, and one or more nut members N. As shown in FIG. Both ends of the rotating shaft 23s are rotatably connected to bent pieces formed on one of the gripping pieces 2a. The bolt member 23 has its head joined to the rotary shaft 23s in a T shape. The nut member N can be screwed onto the threaded portion of the bolt member 23 .

Referring to FIG. 2 or FIG. 3(E), the other gripping piece 2b has a notch portion 23d which is cut out from the tip edge. The bolt member 23 can be introduced from the outer peripheral direction into the notch portion 23d.

With reference to FIG. 3 or FIG. 5, the support fitting 2 can be fixed to the support arm An by fastening the nut member N to the other gripping piece 2b in a state in which the bolt member 23 is introduced into the cutout portion 23d. .

(Structure of protector body)
Next, the configuration of the protector main body 1 according to the embodiment will be described. 1 or 4 to 7, the first sliding plate 11 has a main surface plate 111 and a pair of bent pieces 112.112. The main face plate 111 has both ends bent substantially at right angles to form a pair of bent pieces 112 .

1 or 2, the pair of bent pieces 112 and 112 are rotatably connected to the support member 11b at their bottoms. Referring to FIG. 2, the substrate 1b has a pair of supporting members 11b and 11b. The first sliding plate 11 is rotatably connected to the pair of support members 11b, 11b in a state where the bottoms of the pair of bent pieces 112, 112 are sandwiched between the pair of support members 11b, 11b.

1 or 4 to 7, the second sliding plate 12 has a main surface plate 121 and a pair of bent pieces 122,122. The main surface plate 121 has both ends bent substantially at right angles to form a pair of bent pieces 122,122.

Referring to FIG. 1 or FIGS. 4 to 7, the second sliding plate 12 is connected to the tops of the bending pieces 112, 112 of the first sliding plate 11 at the tops of the bent pieces 122, 122 so as to be openable and closable. ing. Also, the second sliding plate 12 protrudes a second grip portion 123 from the bottom side of the main surface plate 121 . The second grip portion 123 can be gripped by the insulated operating rod 5 for indirect live line construction (see FIG. 9 or 10).

1 or 4 to 7, the second sliding plate 12 has a pair of cylindrical bosses 12b, 12b facing in opposite directions from the bottoms of their bent pieces 122, 122. (See Figure 1).

Referring to FIG. 1 or FIGS. 4 to 7, the pair of arm members 13 and 13 are rotatably connected to the bottom of the first slide plate 11 at one end thereof via a support member 11b (see FIG. 2). are connected. In addition, the arm member 13 has a long hole 13h opened at the other end along its longitudinal direction.

1 or 4 to 7, the boss 12b of the second slide plate 12 is introduced into the elongated hole 13h of the arm member 13. As shown in FIG. The boss 12b is slidably connected to the elongated hole 13h of the arm member 13. As shown in FIG.

4 to 7, in a state in which second grip portion 123 is gripped by insulation operating rod 5 and boss 12b is moved toward one end of arm member 13, first slide plate 11 and first slide plate 11 The two sliding plates 12 are closed to each other so that the prevention tool body 1 can be erected from one of the arms An (see FIG. 4 or 5).

4 to 7, in a state in which second grip portion 123 is gripped by insulation operating rod 5 and boss 12b is moved toward the other end portion of arm member 13, first sliding plate 11 and By opening the second sliding plates 12, the main body 1 of the preventive device 1 can be installed across one arm An and the other arm An (see FIG. 7).

Referring to FIGS. 1 to 7, the bird damage prevention device 10 according to the embodiment is configured such that the prevention device main body 1 in a folded state spreads across a pair of arms An and An with the top portion as the center of rotation, It is possible to prevent birds or the like from flying and nesting over the pair of cross arms An and An.

[Action of bird damage prevention tool for cross arm]
Next, the operation and effects of the bird damage prevention device 10 will be described while explaining the operation procedure of the bird damage prevention device 10 according to the embodiment.

First, referring to FIG. 4, the first gripping portion 22 is gripped by the pair of gripping arms 5a and 5b while the bolt member 23 is standing. Next, by manipulating the insulation operating rod 5, one of the arms An is relatively introduced between the pair of gripping pieces 2a and 2b from the side thereof.

Next, referring to FIG. 5, the bolt member 23 is rotated clockwise to introduce the tip portion side of the bolt member 23 into the notch portion 23d (see FIG. 2). Next, referring to FIG. 5, by fastening the nut member N to the bolt member 23, the pair of gripping pieces 2a and 2b can hold one of the arm members An. The support metal fitting 2 according to the embodiment has the advantage that the operation is easier than the conventional support metal fitting 92 because the bolt member 23 is rotatably connected to the grip piece 2a.

Referring to FIG. 1 or FIG. 8, the utility pole P supports the central portion of one of the arms An. Two pin insulators Pi and Pi are arranged on one end portion side of one arm bracket An. One of the pin insulators Pi is arranged at one end of the arm An. The other pin insulator Pi is arranged near the utility pole P on the one end side of the one arm bracket An. One pin insulator Pi is arranged at the other end of one of the arms An.

Also, referring to FIG. 8, the utility pole P is arranged with an inclined arm tie At. The arm tie At is connected to an arm tie band Bt tightened to the utility pole P at one end thereof. The other end of the arm tie At is connected to the center of the other end of one of the arm ties An. By supporting one of the cross arms An on the utility pole P with an arm tie At, the inclination of the cross arm A can be suppressed.

Referring to FIG. 1 or FIG. 8, the bird damage prevention device 10 according to the embodiment can fix the support fitting 2 to one of the arm ties An so as not to interfere with the arm ties At. By sliding the protector main body 1 with respect to the support fitting 2, the protector main body 1 can be arranged without interfering with the pin insulator Pi. Furthermore, the bird damage prevention device 10 according to the embodiment can be arranged such that the prevention device main body 1 is attached to one of the arms An without interfering with the edge line (not shown) that is laid over the pair of arms An. can be arranged (see FIGS. 4 to 7).

Next, the operation and effect of the bird damage prevention device 10 will be described while explaining the operating procedure of the prevention device main body 1 according to the embodiment.

In the state shown in FIG. 5, the main body 1 of the preventive device has the first sliding plate 11 and the second sliding plate 12 closed to each other, and stands up from one of the arms An. In the state shown in FIG. 5, the boss 12b has moved toward the one end of the arm member 13. As shown in FIG.

From the state shown in FIG. 5, when the second grip portion 123 is gripped by the insulating operating rod 5 and the boss 12b is moved toward the other end of the arm member 13, the first sliding plate 11 and the second sliding plate are moved. 12 can be opened to each other (see FIG. 6).

From the state shown in FIG. 6, when the second grip portion 123 is gripped by the insulating operating rod 5 and the boss 12b is further moved toward the other end portion of the arm member 13, the first sliding plate 11 and the second sliding plate 11 are moved. The plates 12 can be opened from each other (see Figure 7). Then, the tip of the second grip portion 123 can be placed on the top surface of the other arm An (see FIG. 7).

Referring to FIG. 7, the main surface plate 111 of the first sliding plate 11 and the main surface plate 121 of the second sliding plate 12 are open to each other. In the state shown in FIG. 7, the main surface plate 111 of the first sliding plate 11 forms a first slope along which the nesting material slides. Also, in the state shown in FIG. 7, the main surface plate 121 of the second sliding plate 12 forms a second slope along which the nesting material slides.

In the state shown in FIG. 7, the main body 1 of the preventive device is placed across one arm An and the other arm An. In the bird damage prevention device 10, the main body 1 of the protection device in a folded state is opened over the pair of arms An and An with the top portion as the center of rotation, so that birds and the like can fly and the pair of arms can be opened. Nesting over An and An can be prevented.

The following effects can be expected from the bird damage preventive device for arm braces according to the present invention.
(1) There is no need to use many expensive umbrella-shaped bird damage prevention devices.
(2) By using an insulated operating rod for indirect live line construction, the mountain-shaped bird damage prevention device can be easily attached to the arm.
(3) After the chevron-shaped bird damage prevention device is attached to the arm, the device body can be slid to the optimum position.
(4) It can be easily attached to a support arm reinforced with an arm tie.
(5) It is possible to prevent birds from nesting over a pair of armrests.
(6) It is possible to prevent the chevron-shaped preventive tool body from coming into contact with the edge line or the like.

REFERENCE SIGNS LIST 1 protector body 1b substrate 2 support fitting 2a and 2b pair of gripping pieces 2c connecting piece 5 insulated operation rod 10 bird injury prevention device (bird injury prevention device for holding arms)
REFERENCE SIGNS LIST 11 first sliding plate 11d guide groove 12 second sliding plate 13 13 pair of arm members 21 guide rail 22 first gripping portion An holding arm At arm tie

Claims (5)

A bird damage preventive device for arm braces that can be installed straddling one arm brace and the other arm brace, at least one end of which is reinforced with an arm tie,
A first sliding plate whose bottom part is rotatably connected to a strip-shaped base plate, a second sliding plate whose top part is connected to the top part of said first sliding plate so as to be openable and closable, and one end part of which is said first sliding plate a chevron-shaped protector main body having a pair of arm members rotatably connected to the bottom of the plate and having the other end side slidably connected to the bottom of the second sliding plate;
A C-shaped support metal fitting having a pair of gripping pieces facing each other so that one of the above-mentioned holding arms can be freely introduced from the side thereof, and a connecting piece connecting the base ends of the gripping pieces to each other. ,
The substrate has a rectangular guide groove drilled from its bottom surface,
The support bracket is
A rectangular guide erected from one of the gripping pieces and fitted into the guide groove to support the protector body and guide the protector body slidably along the longitudinal direction of the arm. a rail;
A bird damage prevention tool for a holding arm, comprising: a first gripping portion protruding from the other gripping piece and capable of being gripped by an insulated operating rod for indirect hot wire construction. The second sliding plate has a second gripping portion on the bottom side that can be gripped by an insulated operating rod for indirect live line construction,
In a state in which the bottom of the second sliding plate is moved toward one end of the arm member by operating the second gripping portion, the first sliding plate and the second sliding plate are closed to each other, and the The main body of the preventive device can be erected from one of the arms,
When the second grip is operated and the bottom of the second sliding plate moves toward the other end of the arm member, the first sliding plate and the second sliding plate are opened from each other, 2. A bird damage preventive device for a arm according to claim 1, wherein said protector body can be installed across said arm on one side and said arm on the other side. When the first sliding plate and the second sliding plate are opened from each other, the first sliding plate forms a first slope on which nesting material slides, and the second sliding plate forms a first slope on which nesting material slides. 3. A bird protection device for a cross arm according to claim 2, wherein the second slope is formed. The guide groove is
a V-groove formed in one inner wall along the longitudinal direction;
and an arcuate groove formed in the other inner wall along the longitudinal direction,
The guide rail is
a mountain-shaped ridge formed on one side surface and fitted into the V-groove;
4. The device for preventing bird damage for a support arm according to claim 1, further comprising a semi-arc-shaped ridge formed on the other side surface and fitted into said arc-shaped groove. The support bracket is
a rotating shaft having both ends rotatably connected to one of the gripping pieces;
a bolt member having a T-shaped head portion joined to the rotating shaft;
one or more nut members that can be screwed together with the threaded portion of the bolt member;
The other gripping piece has a notch portion cut out from the tip edge to allow the bolt member to be introduced from the outer peripheral direction,
5. Any one of claims 1 to 4, wherein the support fitting can be fixed to one of the holding arms by fastening the nut member to the other gripping piece in a state in which the bolt member is introduced into the notch. A bird damage prevention tool for a hug arm described in Cr.

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