JP7205303B2 - Bird damage prevention tool - Google Patents

Description

The present invention relates to a bird damage prevention device. In particular, it is a bird damage prevention tool suitable for indirect live line work that can perform electrical work in an uninterrupted state using an insulated operating rod, and birds such as crows and pigeons nest on cross arms fixed to utility poles. It relates to the structure of a bird damage prevention tool that prevents bird damage that occurs in.

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).

Japanese Patent Application Laid-Open No. 2005-110571 JP-A-11-289644

FIG. 9 is a perspective view showing an umbrella-bone type bird damage prevention device in a state of being attached to a post according to the prior art. Note that FIG. 9 of the present application corresponds to FIG. 9 of Patent Document 1. FIG.

Referring to FIG. 9, a utility pole P has a pair of arms A and A fixed horizontally on its top. The strap St is fixed to the cross arm A via the pin insulator Pi. A pair of tension insulators Si and Si are arranged on both sides of a pair of arms A and A. A pair of tension insulators Si and Si are oscillatably connected to each other. One tension insulator Si is connected to a cross arm A via a strap St. The other tension insulator Si pivotably connects the anchor clamp Ci.

Referring to FIG. 9, the anchor clamp Ci is covered with an insulating cover. The anchor clamp Ci clamps an overhead distribution line (hereinafter referred to as "wire") W inside thereof. In the anchoring pole shown in FIG. 9, the electric wire W is supported on the electric pole P by attaching the tension insulator Si connected to the anchoring clamp Ci that clamps the electric wire W to the cross arm A supported on the electric pole P. A wire W is laid between a pair of anchor clamps Ci and Ci without tension. A portion of the electric wire W that bypasses the utility pole P is called an edge line We, for example. Although the edge line We is not illustrated in Patent Document 1, the edge line We is provided in most cases.

Referring to FIG. 9 , the bird damage prevention device 8 includes a main shaft member 81 arranged vertically, a plurality of branch members 82 connected in the axial direction of the main shaft member 81 , and a state inclined downward from the branch members 82 . and has a branch rod 83 whose base end is fixed to the branch member 82 .

Referring to FIG. 9, a bird damage prevention device 8 is fixed to the cross arm A via a cross arm fitting Br. The main shaft member 81 can be arranged vertically by inserting the lower end of the main shaft member 81 into the cylindrical portion provided on the tip end side of the arm fitting Br.

Referring to FIG. 9, the bird damage prevention tool 8 according to Patent Document 1 is said to be able to prevent birds from flying and building nests by radially arranging a plurality of branch rods 83 . In addition, since the branch rod 83 is supported in a downwardly inclined state, even if a wire or the like for building a nest is brought in, it falls along the inclination, making it difficult to build a nest.

Referring to FIG. 9, the bird damage prevention device 8 according to Patent Document 1 can easily cut the branch rod 83 to an appropriate length using a cutter. In addition, the plurality of branch rods 83 can be freely extended in a space on the utility pole P where there is a risk of nesting.

FIG. 10 is a perspective view showing the configuration of a needle-shaped bird damage prevention device according to the prior art, and is a view showing the state in which the needle-shaped bird damage prevention device is attached to a cross arm. FIG. 11 is a perspective exploded view showing the structure of a needle-shaped bird damage prevention device according to the prior art. 10 and 11 of the present application correspond to FIGS. 5 and 2 of Patent Document 2. FIG.

Referring to FIG. 10 or 11 , 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. 10 or FIG. 11, the preventive device 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 .

10 or 11, 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. 10 or 11, the arm A can be introduced laterally 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 a nut member (not shown) is fastened to the tip end side of the bolt member 93, whereby the support metal fitting is attached. 92 can be fixed to arm A.

10 or 11, the support fitting 92 further includes a rectangular holding 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.

Referring to FIG. 10 or 11, the space between the fitting piece 94a and the locking piece 94b has a dimension that allows a pair of vertical bars 911, 911 formed on the preventive device body 91 to fit. 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

The bird damage prevention tool 9 shown in FIG. 10 or FIG. 11 can be attached to the cross arm A using an insulated operating rod (so-called insulated stick) for indirect live line construction (not shown). Then, the preventive tool main body 91 is attached to the clamping plate 94 in advance.

Next, referring to FIG. 10 or 11, the connecting piece 92c of the support metal fitting 92 is gripped using an insulating stick (not shown). Next, while the connecting piece 92c is gripped by the insulating hook, the insulating hook is operated to introduce the cross arm A between the pair of gripping pieces 92a and 92b.

Next, referring to FIG. 10 or FIG. 11, the bolt member 93 is inserted through the bolt insertion hole 92h using an insulating plug (not shown). Next, an insulated operating rod (not shown) with a box wrench is used to fasten a nut member (not shown) to the tip portion side of the bolt member 93 . As a result, the bird damage prevention device 9 can be attached to the upper surface of the cross arm A (see FIG. 10).

Comparing the umbrella bone type bird damage prevention device 8 shown in FIG. 9 with the needle mountain type bird damage prevention device 9 shown in FIG. 10 or FIG. Compared to the bird damage prevention tool 9, the unit price is generally higher because the structure is more complicated. 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.

The bird damage preventive device 8 according to Patent Document 1 is fixed to the cross arm fitting Br by lowering the bird damage preventive device 8 from above the cross arm A. It is easier to work by lifting the This also applies to the pincushion-shaped bird damage prevention device 9 .

However, when the bird damage prevention device is lifted from below the cross arm, it must pass between a pair of edge lines We, We, and a plurality of radially spreading branch rods interfere with the pair of edge lines. There is a problem that it is difficult to pass between We and We.

If an attempt is made to forcibly pass the bird damage prevention device between a pair of edge lines We, it is necessary to cover the edge lines We with protective equipment such as an insulating sheet in advance, which increases the number of work processes. be. There is a need for a bird deterrent that can be easily passed between a pair of edge lines. And the above can be said to be the subject of the present invention.

The present invention has been made in view of such problems, and it is possible to easily pass between a pair of edge lines, and after passing between a pair of edge lines, birds build a nest on the utility pole. To provide a bird damage preventive tool for preventing

The inventor of the present invention provides a preventive tool body having a plurality of needle bodies bristled up from a substrate in a divergent manner, and a regulation hole into which the needle bodies are inserted. When the bar member connected to the bar member constitutes the bird damage prevention device, and the bird damage prevention device is passed between a pair of edge lines, the bar member is moved toward the tip end side of the needle body to form a plurality of When the angle of the needles is closed and the bird damage prevention tool is installed on the cross arm, the above problem can be solved by moving the bar member toward the base end of the needles to open the angles of the needles. Based on this idea, the inventors invented a new bird damage prevention device as described below.

(1) A bird damage prevention tool according to the present invention comprises a strip-shaped substrate, and a prevention tool body having a plurality of needles with pointed ends extending from the substrate along the longitudinal direction in a widening manner, a bar member that opens a plurality of regulating holes into which the needle bodies are inserted so as to partition the needle bodies, and that is connected to the plurality of needle bodies while crossing the plurality of needle bodies; When the bar member moves toward the base end side of the needle body, a plurality of needle bodies are opened, and when the bar member moves toward the tip side of the needle body, a plurality of The angle of the needle body is closed.

(2) The base plate is bored from the upper surface along the longitudinal direction, and has a concave portion into which the base end of the needle can be inserted, and a recess inserted from the side to be rotatably connected to the base of the needle. It is preferable to have a connecting pin.

(3) The plurality of needles are engaged with both ends of the bar member, and the bar member is stopped at a predetermined position while the bar member is moving toward the base end of the needle. It is preferable to have a pair of cutouts at both ends.

(4) The needle body has a protrusion that engages with the bar member and can stop the bar member at a predetermined position while the bar member moves toward the distal end of the needle body. preferably.

(5) The plurality of needle bodies are configured such that the tip end portions of the needle bodies can protrude upward while the bar member is moved toward the base end side of the needle bodies. It is preferable that it is bent with respect to the extending direction.

(6) The bird damage preventive device according to the present invention has a supporting portion on one end side for supporting the substrate from the bottom in a state in which the plurality of needle bodies are erected, and further includes a holding portion detachably attached to the cross arm. It further comprises a cross arm fitting on the end side.

A bird damage prevention device according to the present invention includes a prevention device body having a plurality of needles extending from a substrate in a forested manner, and a regulation hole into which the needles are inserted. A bar member connected to a plurality of needle bodies constitutes a bird damage prevention tool, and by moving the bar member toward the tip end side of the needle bodies, the angle of the plurality of needle bodies can be closed, and a set of edge lines is formed. By moving the bar member toward the base end side of the needle body, the angle of the needle bodies can be opened, making it difficult for birds to nest.

1 is a perspective view showing the configuration of a bird damage prevention tool according to an embodiment of the present invention; FIG. FIG. 2A is a front view of the bird damage prevention device according to the embodiment, FIG. 2A is a state diagram in which a plurality of needle bodies are closed, and FIG. 2B is a state diagram in which a plurality of needle bodies are opened. be. Fig. 3(A) is a front view of the cross arm mounting metal fitting, and Fig. 3(B) is a right side view of the cross arm mounting metal fitting. FIG. 3(C) is a rear view of the arm fitting, and FIG. 3(D) is a bottom view of the arm fitting. FIG. 4 is a right side view showing the usage state of the bird damage prevention device according to the embodiment, and is a state diagram before the bird damage prevention device is attached to the cross arm. FIG. 4 is a right side view showing a usage state of the bird damage prevention device according to the embodiment, and a view showing a state in which the bird damage prevention device is attached to a cross arm. FIG. 4 is a mounting diagram of a cross arm to which the bird damage prevention device according to the embodiment is to be attached; FIG. 4 is a front view showing the configuration of an insulated operating rod for operating the bird damage prevention device according to the present invention; FIG. 8 is an enlarged front view of the main part of FIG. 7; FIG. 10 is a perspective view showing a post mounting 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.

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 configuration of the bird damage prevention device according to the present invention, the configuration of an insulated operating rod for operating the bird damage prevention device according to the present invention will be described.

(Configuration of insulated operating rod)
7 or 8, 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 .

7 or 8, 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. 7, the 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. 7, gripping the operating lever 54 and bringing the operating lever 54 closer to the operating rod 51 allows the gripping arm 5b to close 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. FIG. 7 or FIG. 8 shows a state in which the gripping arm 5b is opened to the maximum with respect to the gripping arm 5a.

7 or 8, one gripping arm 5a projects 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. Referring to FIG. 7 or 8, when the operating lever 54 is gripped, the gripping surface 50b can be brought closer to the gripping surface 50a.

The insulating operating rod 5 shown in FIG. 7 or 8 is a so-called "insulating rod" that can grip a high-voltage distribution line or the like placed at a high place with a pair of gripping claws 51a and 51b.

[Configuration of bird damage prevention device]
(overall structure)
Next, the configuration of the bird damage prevention device according to one embodiment of the present invention will be described. Components having the same reference numerals as those used in the prior art have the same functions, and therefore the explanations thereof may be omitted.

1 to 6, a bird protection device 10 according to one embodiment of the present invention can be installed on a cross arm A. As shown in FIG. The cross arm A is mounted on the utility pole P in a substantially horizontal state (see FIG. 6). In the example shown in FIG. 6, arm A supports three pin insulators Pi and a lightning arrester Ar adjacent to pin insulators Pi.

1 to 6, by installing the bird damage prevention device 10 on the cross arm A, it is possible to prevent birds from flying in and nesting on the cross arm A. As shown in FIG.

Referring to FIGS. 1 to 6, the bird damage prevention device 10 includes a prevention device main body 1, a strip-like bar member 2, and a C-shaped cross arm fitting 3. As shown in FIG. The protector main body 1 includes a strip-shaped substrate 11 and a plurality of square-pyramidal needles 12 with pointed ends. A plurality of needle bodies 12 are bristling in a widening manner along the longitudinal direction from the substrate 11 . It is preferable that the substrate 11 and the plurality of needle bodies 12 are each molded with an insulating synthetic resin.

Referring to FIG. 1, the bar member 2 has a plurality of regulating holes 2h in a row into which the needles 12 are inserted. A plurality of needle bodies 12 can be separated from each other by inserting the needle bodies 12 into the regulation holes 2h one by one. Further, the bar member 2 is movably connected to the plurality of needle bodies 12 while crossing the plurality of needle bodies 12 . In addition, in FIG. 1, the bar member 2 is redundantly illustrated for convenience of explanation.

Referring to FIG. 2B, in a state in which bar member 2 is moved toward the base ends of needles 12, bird damage prevention device 10 opens the needles 12. As shown in FIG. On the other hand, referring to FIG. 2A, when the bar member 2 is moved toward the distal ends of the needles 12, the bird damage prevention tool 10 closes the needles 12. As shown in FIG.

Referring to FIGS. 1 to 6, a bird damage prevention device 10 according to the embodiment includes a prevention device main body 1 having a plurality of needles 12 extending from a base plate 11 in a divergent manner, and regulation holes 2h into which the needles 12 are inserted. is opened, and the bar member 2 is connected to the plurality of needle bodies 12 while crossing the plurality of needle bodies 12 .

Referring to FIG. 9, when the bird damage prevention device 10 is passed between a pair of edge lines We and We, the bar member 2 is moved toward the distal end portion of the needle body 12 so that a plurality of The angle of the needle body 12 can be closed (see FIG. 2(A)). As a result, the bird damage prevention device 10 can be easily passed between the pair of edge lines We and We.

Referring to FIG. 9, after the bird damage prevention device 10 is passed between a pair of edge lines We and We, the bar member 2 is moved toward the base end side of the needle body 12 to obtain a plurality of needle 12 can be opened (see FIG. 2(B)). In the state shown on the right side of FIG. 1 or FIG. 2(B) and FIG. 4, since the plurality of needle bodies 12 are open, it is difficult for birds to nest.

(Structure of protector body)
Next, the configuration of the protector main body 1 according to the embodiment will be described. Referring to FIG. 1 or FIG. 2, the substrate 11 has a rectangular opening recess 11a and a plurality of connecting pins 11p.

Referring to FIG. 1, the recess 11a is bored along the longitudinal direction of the substrate 11 from the upper surface of the substrate 11. As shown in FIG. The proximal end portions of a plurality of needle bodies 12 can be inserted into the concave portion 11a. 1 or 2, the connecting pin 11p can be inserted from the side of the substrate 11. As shown in FIG. The connecting pin 11p is rotatably connected to the proximal end of the needle body 12. As shown in FIG. As a result, the preventive device main body 1 can swing the plurality of needle bodies 12 so that the plurality of needle bodies 12 can be changed between a state in which the angle of the needle bodies 12 is open and a state in which the angle of the needle bodies 12 is closed.

(Structure of Needle Body)
Next, the configuration of the needle body 12 according to the embodiment will be described. Referring to FIGS. 1 to 5, the plurality of needle bodies 12 have a pair of notch portions 12a, 12a at both end portions. The pair of notch portions 12a, 12a are notched in opposite directions. Also, the pair of notch portions 12a, 12a are notched on the base end portion side of the needle body 12. As shown in FIG.

Referring to FIG. 2, when bar member 2 is moved toward the base end of needle body 12, the pair of cutouts 12a engages regulation holes 2h at both ends of bar member 2. As shown in FIG. can be combined. Thereby, the bar member 2 can be stopped at a predetermined position with respect to the plurality of needle bodies 12 . Further, the state in which the plurality of needle bodies 12 are opened can be maintained.

Referring to FIGS. 1 to 4, the central needle body 12 has a hemispherical projection 12b projecting from one side surface. The projection 12b is arranged on the tip side of the needle body 12. As shown in FIG. When the bar member 2 is moved toward the distal end of the needles 12 from the state shown in FIG. 2(B), the angle of the needles 12 can be closed. When the bar member 2 gets over the protrusion 12b, the bar member can be stopped at a predetermined position. As a result, the needle bodies 12 can be maintained in a closed-angle state.

With reference to FIG. 1 or FIG. 2B, the plurality of needle bodies 12 are configured such that the distal end portions of the needle bodies 12 are positioned upward while the bar member 2 is moved toward the base end side of the needle bodies 12 . It is preferable that the needle body 12 is bent with respect to the extending direction so as to be able to protrude toward. As a result, birds can be prevented from flying into the bird damage prevention device 10 .

(Composition of cross arm mounting bracket)
Next, the structure of the cross arm attachment metal fitting 3 by embodiment is demonstrated. 1 to 5, the arm fitting 3 has a pair of gripping pieces 3a and 3b and a connecting piece 3c. A pair of gripping pieces 3a and 3b are arranged substantially parallel with a predetermined interval. The cross arm A can be introduced from the side surface of the pair of gripping pieces 3a and 3b. The connecting piece 3c connects the base ends of the pair of gripping pieces 3a and 3b.

Referring to FIGS. 1 to 5, the cross arm fitting 3 has a support portion 31 erected from one gripping piece 3a. As an entity, the support portion 31 is configured by a cylindrical member. The support portion 31 supports the substrate 11 from its bottom side.

On the other hand, referring to FIGS. 1 to 5, the cross arm fitting 3 has a gripping portion 32 protruding from the other gripping piece 3b. As a substance, the grip portion 32 is formed of a rectangular plate welded to the outer surface of the connecting piece 3c (see FIG. 3A). The gripping portion 32 can be gripped by the insulated operating rod 5 for indirect hot wire construction (see FIG. 7 or 8).

1 to 5, the cross arm fitting 3 further includes a pivot shaft 33s, a bolt member 33, and one or more nut members N. As shown in FIG. 33 s of rotating shafts are rotatably connected with the bending piece formed in one holding piece 3a at the both ends. The bolt member 33 has its head joined to the rotation shaft 33s in a T shape. The nut member N can be screwed onto the threaded portion of the bolt member 33 .

Referring to FIG. 1 or FIG. 3(D), the other gripping piece 3b has a notch portion 33d cut from the tip edge. The bolt member 33 can be introduced from the outer peripheral direction into the notch portion 33d.

With reference to FIG. 3 or FIG. 5, the cross arm fitting 3 is fixed to the cross arm A by fastening the nut member N to the other gripping piece 3b in a state where the bolt member 33 is introduced into the notch portion 33d. can.

[Function of bird damage prevention device]
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. 2(A) or FIG. 3(A), the bird damage prevention device 10 is configured such that the bar member 2 is attached to the needle body 12 while the prevention device main body 1 is fixed to the arm fitting 3. It is preferable that the needle bodies 12 are moved toward the distal end side and the angles of the needle bodies 12 are closed.

Next, using the insulated operation rod 5 (see FIG. 6 or 7), grasp the gripping piece 24 provided on the arm fitting 3, and raise the bird damage prevention device 10 with the arm fitting 3. , the bird protection device 10 can be easily passed between a pair of edge lines We and We (see FIG. 9).

Further, referring to FIG. 4, the gripping portion 32 is gripped by the pair of gripping arms 5a and 5b while the bolt member 33 is in an upright state. Next, by operating the insulation operating rod 5, the cross arm A is introduced from the side surface between the pair of gripping pieces 3a and 3b.

Next, referring to FIG. 5, the bolt member 33 is rotated clockwise to introduce the tip portion side of the bolt member 33 into the cutout portion 33d (see FIG. 3D). Next, referring to FIG. 5, by fastening the nut member N to the bolt member 33, the cross arm A can be held between the pair of gripping pieces 3a and 3b.

Next, referring to FIG. 6, after fixing the cross arm fitting 3 to the cross arm A, an insulated operating rod (not shown) having a hook-shaped hook tool (so-called bind striker) at its tip is attached. By moving the bar member 2 toward the proximal end portion side of the needles 12 using the needles 12, a state in which the angles of the needles 12 are closed can be maintained. As a result, birds can be prevented from flying in, and bird damage can be prevented. In addition, the right side of FIG. 6 shows a state in which a plurality of needle bodies 12 are closed.

Referring to FIGS. 1 to 6, a bird damage prevention device 10 according to the embodiment includes a prevention device main body 1 having a plurality of needles 12 extending from a base plate 11 in a divergent manner, and regulation holes 2h into which the needles 12 are inserted. is opened, and the bar member 2 is connected to the plurality of needle bodies 12 while crossing the plurality of needle bodies 12 .

Referring to FIG. 9, when the bird damage prevention device 10 is passed between a pair of edge lines We and We, the bar member 2 is moved toward the distal end portion of the needle body 12 so that a plurality of The angle of the needle body 12 can be closed (see FIG. 2(A)). As a result, the bird damage prevention device 10 can be easily passed between the pair of edge lines We and We.

Referring to FIG. 9, after the bird damage prevention device 10 is passed between a pair of edge lines We and We, the bar member 2 is moved toward the base end side of the needle body 12 to obtain a plurality of needle 12 can be opened (see FIG. 2(B)). In the state shown on the right side of FIG. 1 or FIG. 2(B) and FIG. 4, since the plurality of needle bodies 12 are open, it is difficult for birds to nest.

The bird damage prevention tool 10 according to the embodiment can stop the bar member 2 at a predetermined position while the bar member 2 is moved toward the base end side of the needle body 12 . Moreover, the bird damage prevention tool 10 according to the embodiment can stop the bar member 2 at a predetermined position while the bar member 2 is moved toward the tip portion side of the needle body 12 . The bird damage prevention device 10 according to the embodiment can maintain the state in which the plurality of bar members 2 are opened and the state in which the angles are closed.

The bird damage prevention tool according to the present invention can be expected to have the following effects.
(1) It can be easily attached to a cross arm in indirect hot-line work by utilizing a relatively inexpensive needle mountain-shaped bird damage prevention tool.
(2) It is possible to pass through the bird damage prevention device even in a narrow space such as an edge line.
(3) A plurality of needles can be opened and closed after attaching the bird protection device to the cross arm.
(4) It is possible to shorten the installation time of the bird damage prevention device.

Although the bird damage prevention tool according to the present invention has disclosed an embodiment in which nine flying prevention rods are arranged radially, it is conceivable to increase or decrease the number of these flying prevention rods.

REFERENCE SIGNS LIST 1 preventive device body 2 bar member 2h regulation hole 10 bird damage preventive device 11 substrate 12 needle body

Claims (6)

a strip plate-like substrate, and a protector main body having a plurality of needles with sharp tips extending from the substrate along the longitudinal direction in a widening manner;
a bar member that opens a plurality of regulation holes into which the needles are inserted so as to partition the needles, and that is movably connected to the plurality of needles while crossing the plurality of needles; with
When the bar member moves toward the base end of the needle, the plurality of needles are opened,
A bird damage preventive device that closes the angle of a plurality of needle bodies in a state in which the bar member is moved toward the distal end side of the needle bodies. The substrate is
a recess formed along the longitudinal direction from the upper surface into which the base end of the needle can be inserted;
2. The bird damage prevention device according to claim 1, further comprising a connecting pin which is inserted from the side surface and rotatably connected to the base end of said needle body. The plurality of needles are engaged with both end portions of the bar member, and in a state in which the bar member moves toward the base end side of the needle member, a pair of the bar members can be stopped at a predetermined position. 3. A bird damage preventive device according to claim 1 or 2, which has notches at both ends. The needle body has a projection that engages with the bar member and can stop the bar member at a predetermined position while the bar member moves toward the distal end of the needle body. Item 4. A bird damage prevention tool according to any one of Items 1 to 3. The plurality of needle bodies are configured so that the tip end portions of the needle bodies can protrude upward perpendicularly to the bar member in a state in which the bar member is moved toward the base end side of the needle body. 2. The needles are bent in the direction in which they extend, and in a state in which the bar member moves toward the tip side of the needles, the tip portions of the needles are bent inward. 5. The bird damage prevention tool according to any one of 4 to 4. It further comprises a cross arm fitting having a supporting part on one end side for supporting the substrate from the bottom in a state in which the plurality of needle bodies are erected, and a cross arm attaching metal fitting having a holding part detachably attached to the cross arm on the other end side. 6. The bird damage prevention tool according to any one of claims 1 to 5.

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