JP2020043795A - Bird injury prevention tool - Google Patents

Abstract

To provide a bird injury prevention tool capable of easily passing a space between one set of edge lines.SOLUTION: A bird injury prevention tool 10 comprises: a main shaft member 11 extending straightly; branch rods 13 which form a pair being coupled to the main shaft member 11 rotatably, through a branch member 12 being continuous to an axial direction of the main shaft member 11; and a bone reception member whose one end part is rotatably coupled to an intermediate part of the branch rod 13 and the other end part is rotatably coupled to an outer peripheral part of a movement member 15, in which the bird injury prevention tool is formed into a skeleton of an umbrella. In a state in which the movement member 15 is moved toward one end part side of the main shaft member 11, a virtual circumference Cv coupling tip end edges of the branch rods 13, 13 forming a pair is extended, and in a state in which the movement member 15 is moved toward the other end part side of the main shaft member 11, the virtual circumference Cv coupling tip end edges of the branch rods 13, 13 forming a pair is shrunk.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bird harm prevention device. In particular, it relates to a structure of a bird harm prevention device for preventing birds such as crows and pigeons from forming nests on telephone poles.

  When birds such as crows nest on equipment installed on telephone poles, there is a concern that this nest may cause a power outage. For example, when a bird carries a wire or the like to a utility pole facility to build a nest, the wire may come into contact with an electric wire and cause a short circuit.

  In order to prevent such bird damage, a bird damage prevention tool is known which prevents birds from flying and nesting by attaching an umbrella-shaped nesting tool to a metal arm installed on a telephone pole.

  An umbrella-shaped bird harm prevention device according to the related art includes a main shaft member arranged in a vertical state, and a plurality of branches extending radially in a state in which a base end portion is fixed to an outer periphery of the main shaft member and is inclined downward around the main shaft member. It is made up of sticks. On the other hand, the space on the pole where birds can nest differs depending on the mounting condition of the arm and the presence or absence of a switch or a transformer. For this reason, in the bird harm prevention device according to the conventional technique, there is a concern that depending on the mounting condition of the utility pole, a nesting space remains, and bird harm cannot be effectively prevented.

  The bird harm prevention device according to the prior art has such a problem, so that it can cope with the condition of the pole installation, can freely extend the branch pole in the required space, and ensure that birds fly and nest. A bird harm prevention device capable of preventing the harm is disclosed (for example, see Patent Document 1).

JP 2005-110571 A

  FIG. 11 is a perspective view showing the state of mounting the bird harm prevention device according to the related art. FIG. 11 of the present application corresponds to FIG. 9 of Patent Document 1.

  Referring to FIG. 11, the electric pole P has a pair of arms A, A fixed to the upper part thereof in a horizontal state. The strap St is fixed to the arm A through the pin insulator Pi. A pair of tension insulators Si, Si are arranged on both sides of the pair of arms A, A. The pair of tension insulators Si and Si are swingably connected to each other. One tension insulator Si is connected to the arm A through the strap St. The other tension insulator Si connects the retaining clamp Ci in a swingable manner.

  Referring to FIG. 11, the retaining clamp Ci is covered with an insulating cover. The retention clamp Ci holds an overhead distribution line (hereinafter, referred to as an electric wire) W therein. In the retaining pole shown in FIG. 11, a tension insulator Si connected to a retaining clamp Ci for holding the electric wire W is attached to a arm A supported on the electric pole P, and the electric wire W is supported on the electric pole P. The electric wire W is laid between the pair of retaining clamps Ci without requiring tension. The portion of the electric wire W bypassing the utility pole P is called, for example, an edge line We. In addition, although the edge line We is not illustrated in Patent Literature 1, the edge line We is arranged in many actual situations.

  Referring to FIG. 11, the bird harm prevention device 9 includes a main shaft member 91 disposed in a vertical state, a plurality of branch members 92 connected in the axial direction of the main shaft member 91, and a state inclined downward from the branch member 92. And a branch rod 93 whose base end is fixed to the branch member 92.

  Referring to FIG. 11, a bird damage prevention tool 9 is fixed to the arm A through an arm mounting bracket Br. By inserting the lower end portion of the main shaft member 91 into a cylindrical portion provided on the distal end side of the arm mounting bracket Br, the main shaft member 91 can be arranged vertically. Further, by arranging the plurality of branch rods 93 radially, it is possible to prevent birds from flying and nesting. Since the branch rod 93 is supported in a state of being inclined downward, even if a wire or the like for nesting is carried in, it falls down along the inclination, making nesting difficult.

  Referring to FIG. 11, the bird harm prevention device 9 according to Patent Document 1 can easily cut the branch rod 93 to an appropriate length using a cutter, so that it does not come into contact with a switch or a transformer. In addition, a plurality of branch rods 93 can be freely extended in a space on the electric pole P where there is a possibility of nesting.

  The bird harm prevention tool 9 according to Patent Literature 1 is fixed to the arm bracket mounting bracket Br by lowering the bird harm prevention tool 9 from above the arm A, but is fixed from below the arm A to the bird harm prevention tool 9. It is better to lift the work. The same applies to existing nesting devices framed in an umbrella shape.

  However, when the bird harm prevention device is lifted from below the arm, it is necessary to pass between a pair of edge lines We, We, and a plurality of radially extending branch rods hinders the set of edge lines. There is a problem that it is difficult to pass between We and We.

  If a bird harm prevention tool is forcibly passed between a pair of edge lines We and We, it is necessary to cover the edge line We with an armor such as an insulating sheet in advance, thereby increasing the number of work steps. is there. There is a need for a bird harm prevention device that can easily pass between a set of edge lines. And the above may be said to be an object of the present invention.

  The present invention has been made in view of such a problem, and can easily pass between a pair of edge lines, and after passing between the pair of edge lines, birds nest on a utility pole. It is an object of the present invention to provide a bird harm prevention device for preventing such a situation.

  The present inventor has disclosed a main shaft member extending straight, a pair of branch rods rotatably connected to the main shaft member via a branch member continuously provided in the axial direction of the main shaft member, and one end portion between the branch rods. A rotatable receiving member rotatably connected to the outer peripheral portion of the moving member and the other end portion rotatably connected to the moving portion. The above-mentioned problem can be solved by closing the bird harm prevention device when passing the bird harm prevention device through the umbrella and opening the bird harm prevention device when installing the bird harm prevention device on the arm. Based on this, the inventors have invented the following new bird harm prevention device.

  (1) A bird harm prevention device according to the present invention includes a main shaft member extending straight, a plurality of branch members fixed to one end side of the main shaft member at predetermined intervals in an axial direction of the main shaft member, and A pair of end bars rotatably connected to the branch member, a pair of end bars extending in opposite directions from the branch member, and a receiving end rotatably connected to an intermediate portion of the branch bar. A bone member, a disk-shaped moving member rotatably connected to an outer peripheral portion with the other end portion of the receiving member, and movably connected to the other end side of the main shaft member; A pair of branches is radially arranged without intersecting in the outer circumferential direction, and in a state where the branches are inclined downward from the branch member, a closed link is formed by the main shaft member, the branch, and the bone receiving member. In the state where the moving member moves toward one end of the main shaft member, In the state where the virtual circumference connecting the leading edges of the branch bars forming the diameter is enlarged and the moving member moves toward the other end side of the main shaft member, the virtual circumference connecting the leading edges of the pair of the branch bars is increased. The circumference of is reduced.

  (2) The bird harm prevention device according to the present invention has a support portion for supporting the other end portion of the main shaft member at one end side in a state where the main shaft member stands up, and a detachable holding portion for the arm. It is preferable to further include a metal arm mounting bracket provided on the other end side.

  (3) The main shaft member has a clasp that can abut on the bottom surface of the moving member in order to maintain a state in which a virtual circumference connecting the leading edges of the pair of branch rods has an expanded diameter. It is preferable that the clasp is disposed so as to be able to protrude and retract from the outer periphery of the main shaft member.

  (4) The moving member has a bottom surface which is operated by a hook-shaped binding tool connected to the tool portion of the common operation rod having a tool portion at a tip portion to which a tip tool having a different application can be freely connected. Is preferred.

  The bird harm prevention device according to the present invention includes a main shaft member extending straight, a pair of branch rods rotatably connected to the main shaft member via a branch member provided in the axial direction of the main shaft member, and one end portion. A bone receiving member rotatably connected to the middle portion of the branch bar and the other end rotatably connected to the outer peripheral portion of the moving member. The umbrella frame is formed, and the bird harm prevention device is closed. This makes it possible to easily pass the bird harm prevention device between a pair of edge lines, and to make the bird nest nesting difficult by opening the bird harm prevention device.

It is a perspective view showing composition of a bird harm prevention implement by one embodiment of the present invention. FIG. 2A is a front view of the bird harm prevention tool according to the embodiment, and FIG. 2B is a plan view of the bird harm prevention tool. It is a figure which shows the bird harm prevention tool by the said embodiment in an open state, FIG. 3: (A) is a front view of a bird harm prevention tool, FIG. 3: (B) is a top view of the bird harm prevention tool. It is the perspective exploded assembly figure which expanded the principal part of the bird harm prevention tool by the above-mentioned embodiment. It is a figure which shows the structure of the arm mounting bracket provided in the bird harm prevention tool by the said embodiment, FIG.5 (A) is a front view of the arm mounting bracket, FIG.5 (B) is the plane of the arm mounting bracket. FIG. 5 (C) is a right side view of the arm member mounting bracket, FIG. 5 (D) is a left side view of the arm member mounting bracket, and FIG. 5 (E) is a bottom view of the arm member mounting bracket. . It is a front view showing composition by an example of an insulating operation stick concerning the present invention. It is the front view which expanded the principal part of FIG. It is a front view showing the composition of the common operation stick for operating the bird harm prevention implement by the above-mentioned embodiment. It is the perspective view which expanded the principal part of the common operation stick of FIG. It is a front view showing composition by an example of a tip tool which can be attached to and detached from a tip part of a common operation stick. It is a perspective view which shows the mounting state of the bird damage prevention tool by a prior art.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Composition of bird harm prevention equipment]
First, the configuration of the bird harm prevention device according to one embodiment of the present invention will be described. Note that components having the same reference numerals as those used in the related art have the same operation, and thus description thereof may be omitted below.

(overall structure)
Next, the overall configuration of the bird harm prevention device according to one embodiment of the present invention will be described. Referring to FIGS. 1 to 4, a bird harm prevention device 10 according to an embodiment of the present invention includes a main shaft member 11 extending straight and three branch members 12. In addition, the bird harm prevention device 10 includes three pairs of receiving members 141, 141, 142, 142, 143, 143 which are paired with the pair of branch rods 13, 13 and have different lengths. Further, the bird harm prevention device 10 includes a disk-shaped moving member 15.

  Referring to FIGS. 1 to 3, the plurality of branch members 12 are fixed to one end of the main shaft member 11 at predetermined intervals in the axial direction of the main shaft member 11. The base rods of the pair of branch rods 13 are rotatably connected to the branch member 12. Further, the pair of branch rods 13, 13 has their tips extending in opposite directions from the branch member 12.

  Referring to FIGS. 1 to 3, three sets of receiving members 141, 141, 142, 142, 143, 143 have one ends thereof rotatably connected to the intermediate portion of the branch rod 13. The outer peripheral portion of the moving member 15 is rotatably connected to the other end portions of the three sets of receiving members 141, 141, 142, 142, 143, 143. The moving member 15 is movably connected to the other end of the main shaft member 11.

  Referring to FIGS. 1 to 3, a plurality of pairs of branch rods 13 are radially arranged without intersecting in the outer peripheral direction (see FIG. 2B or FIG. 3B).

  Referring to FIGS. 1 to 3, a closed link is formed by the main shaft member 11, the branch rod 13, and the bone receiving member 141 in a state where the pair of branch rods 13 are inclined downward from the branch member 12. ing. Similarly, in a state where the pair of branch rods 13 is inclined downward from the branch member 12, the main shaft member 11, the branch rod 13, and the bone receiving member 142 form a closed link. In a state where the pair of branch rods 13 is inclined downward from the branch member 12, the main shaft member 11, the branch rod 13, and the bone receiving member 143 form a closed link.

  Referring to FIG. 3, when moving member 15 is moved toward one end of main shaft member 11, a virtual circumference Cv connecting the leading edges of paired branch rods 13 is enlarged. . On the other hand, referring to FIG. 2, in a state where moving member 15 has moved toward the other end of main shaft member 11, a virtual circumference Cv connecting the tip edges of paired branch rods 13 is reduced in diameter. doing.

  Referring to FIGS. 1 to 3, the bird harm prevention device 10 according to the embodiment is rotatable with the main shaft member 11 via a main shaft member 11 extending straight and a branch member 12 provided in the axial direction of the main shaft member 11. A pair of branch rods 13 and 13 having a pair connected to the middle part of the branch rod 13 at one end and rotatably connected to the outer periphery of the moving member 15 at the other end. The members are configured in a umbrella framework.

  Referring to FIG. 11, when the bird harm prevention device 10 is passed between a pair of edge lines We and We, the virtual circumference Cv connecting the tip edges of the pair of branch rods 13 is reduced in diameter. By doing so (see FIG. 2), the bird harm prevention device 10 can easily pass between the pair of edge lines We.

  Referring to FIG. 11, after passing the bird harm prevention tool 10 between a pair of edge lines We and We, the virtual circumference Cv connecting the tip edges of the pair of branch rods 13 and 13 is enlarged. By doing so (see FIG. 1 or FIG. 3), the nesting of birds can be made difficult because the plurality of branch rods 13 are inclined downward.

(Configuration of branch member)
Next, the configuration of the branch member 12 according to the embodiment will be described. Referring to FIG. 4, the branch member 12 includes a disk-shaped branch member main body 12b and a nut member 12n. The main shaft member 11 can be inserted into the branch member main body 12b. The branch member main body 12b has a disk part 121 and a chuck part 122.

  Referring to FIG. 4, the disk portion 121 has six notch grooves 12d radially cut out. Flat portions formed at the base end of the branch rod 13 can be introduced into these notched grooves 12d. Further, the disk portion 121 has a pivotal support groove 12e communicating with the notch groove 12d, which is formed from the upper surface. A shaft pin (not shown) pressed into the flat portion of the branch rod 13 can be introduced into the pivot groove 12e. By introducing a shaft pin (not shown) provided at the base end of the branch rod 13 into the pivot groove 12e, the base end of the branch rod 13 can be rotatably connected to the branch member body 12b. .

  Referring to FIG. 4, the chuck part 122 protrudes from the upper surface of the disk part 121. The chuck part 122 has a male screw part ms formed on the outer periphery of the base end part. Further, the chuck portion 122 protrudes the conical portion cc from the male screw portion ms. The conical portion cc is provided with a plurality of slits st.

  Referring to FIG. 4, the nut member 12n has a female screw portion formed on the inner periphery. The nut member 12n can reduce the diameter of the conical portion cc by screwing into the chuck portion 122. Then, the branch member 12 can be fixed at a predetermined position of the main shaft member 11. The nut member 12n has a flange 12f formed at the base end. Since the flange portion 12f is in contact with or close to the upper surface of the disk portion 121, it is possible to prevent a shaft pin (not shown) pressed into the flat portion of the branch rod 13 from falling off.

(Structure of moving member)
Next, the configuration of the moving member 15 according to the embodiment will be described. Referring to FIG. 4, the moving member 15 integrally forms the disc portion 15 b and the flange portion 15 f. The moving member 15 can slidably insert the main shaft member 11 therein.

  Referring to FIG. 4, the disk portion 15b radially cuts out six notch grooves 15d. A flat portion 14f formed at the other end of the receiving member 143 can be introduced into these cutout grooves 15d.

  Referring to FIG. 4, the disk portion 15b has a pivotal support groove 15e communicating with the notch groove 15d and is formed from the upper surface. The shaft pin 14p pressed into the flat portion 14f of the receiving member 143 can be introduced into the pivot groove 15e. The other end of the receiving member 143 can be rotatably connected to the moving member 15 by introducing the shaft pin 14p provided at the other end of the receiving member 143 into the pivot groove 15e. The receiving members 141 and 142 have the same configuration.

(Composition of the arm fittings)
Subsequently, the configuration of the bird harm prevention device 10 will be described. Referring to FIG. 1 or FIG. 5, the bird harm prevention device 10 further includes an arm metal attachment 2. The arm metal fitting 2 has a support portion 2s at one end and a holding portion 2k at the other end.

  Referring to FIG. 1, the support portion 2s can support the other end of the main shaft member 11 in a state where the main shaft member 11 stands. The holder 2k can be attached to and detached from the arm A.

  Referring to FIG. 1 or FIG. 5, the arm metal fitting 2 includes a first grip metal 21 having a C-shaped channel shape and a second grip metal 22 bent in a crank shape. The arm fitting 2 includes a bolt member 23 and a gripping piece 24.

  Referring to FIG. 1 or FIG. 5, an intermediate portion of the second holding member 22 is joined to a bottom surface of the first holding member 21 by welding. One end of the first grip 21 and one end of the second grip 22 are opposed to each other.

  Referring to FIG. 5B, a mounting hole 21 h is opened at one end of the first gripping metal 21. Referring to FIG. 5E, a mounting hole 22 h is opened at one end of the second gripping bracket 22. The mounting hole 21h and the mounting hole 22h are arranged concentrically. The other end of the main shaft member 11 can be inserted into the mounting holes 21h and 22h (see FIG. 1).

  Referring to FIG. 1, a male screw portion is formed on the other end side of the main shaft member 11. The other end of the main shaft member 11 is inserted into the mounting hole 21h and the mounting hole 22h, and the nut 11n is fastened. As a result, the support portion 2s becomes the other end of the main shaft member 11 with the main shaft member 11 standing upright. Can be supported.

  Referring to FIG. 1 or FIG. 5, the other end of the first grip 21 and the other end of the second grip 22 are opposed to each other. The arm A can be introduced from the outer peripheral direction between the other end of the first grip 21 and the other end of the second grip 22.

  Referring to FIG. 1 or FIG. 5, the bolt member 23 has a rotating shaft 23s joined to the head in a T-shape. Both ends of the rotation shaft 23 s are rotatably connected to bent pieces of the first grip 21. As shown by the imaginary line in FIG. 5A, when the bolt member 23 is rotated counterclockwise, the arm A can be introduced into the holding portion 2 k of the arm mounting bracket 2.

  On the other hand, referring to FIG. 1 or 5, after the arm A is introduced into the holding portion 2 k of the arm fitting 2, the bolt 23 is rotated clockwise to fasten the nut to the bolt 23. Thus, the arm A can be sandwiched between the other end of the first grip 21 and the other end of the second grip 22.

  Referring to FIG. 1 or FIG. 5, the gripping piece 24 is joined to an intermediate portion of the second gripping metal member 22 by welding. The gripping piece 24 can be gripped by using an insulating operation rod 5 described later. Then, the bird harm prevention tool 10 can be moved in a state in which the arm metal attachment 2 is attached to the bird harm prevention tool 10.

(Structure of insulating operation rod)
Next, the configuration of the insulating operation rod for operating the bird damage prevention tool 10 with the arm fitting mounting 2 will be described.

  Referring to FIG. 6 or FIG. 7, the insulating operation rod 5 includes a long operation rod 51 and a gripping tool 52. The insulating operation rod 5 includes an operation rod 53. The gripping tool 52 is attached to the tip of the operation rod 51.

  Referring to FIG. 6 or FIG. 7, the gripping tool 52 includes a pair of curved gripping arms 5a and 5b that open and close. The one gripping arm 5a is a fixed arm having a fixed base end, and the other gripping arm 5b rotates about a rotation shaft 5c provided at the base end of the one gripping arm 5a. It has a movable arm.

  Referring to FIG. 6, the operation rod 53 is held along the operation rod 51. The tip of the operating rod 53 is rotatably connected to the other gripping arm 5b. When the operation lever 54 provided at the base end of the operating rod 53 is operated, one gripping arm 5a can open and close the other gripping arm 5b. The insulated operation rod 5 has a middle portion between the operation rod 51 and the operation rod 53 made of a plastic pipe or the like having an insulating property, and has an insulating property suitable for an indirect hot-line method.

  Referring to FIG. 6, when the operating lever 54 is gripped and the operating lever 54 is moved closer to the operating rod 51, one gripping arm 5a can close the other gripping arm 5b. When the operating lever 54 is released, one gripping arm 5a can open the other gripping arm 5b with the force of a spring (not shown) connected to the operating lever 54. FIG. 6 or FIG. 7 shows a state in which one gripping arm 5a has the other gripping arm 5b fully opened.

  Referring to FIG. 6 or FIG. 7, one gripping arm 5a projects a tapered gripping claw 51a. The holding claws 51a form a holding surface 50a. The grip surface 50a is formed substantially parallel to the centrifugal direction from the rotation center of the rotation shaft 5c. Similarly, the other gripping arm 5b protrudes a tapered gripping claw 51b. The holding claws 51b form a holding surface 50b. The grip surface 50b is arranged with a predetermined opening angle with respect to the grip surface 50a. Referring to FIG. 6 or FIG. 7, when gripping operation lever 54, gripping surface 50b can be brought closer to gripping surface 50a.

  The insulating operating rod 5 shown in FIG. 6 or FIG. 7 is a so-called “insulating yoke” that can grip a high-voltage distribution line or the like disposed at a high place with a pair of gripping claws 51a and 51b.

  Next, description of the bird harm prevention device 10 will be continued. Referring to FIG. 2, by moving moving member 15 toward one end of main shaft member 11 from a state in which the virtual circumference Cv of bird harm prevention device 10 is reduced in diameter, bird harm prevention device 10 has The virtual circumference Cv can be enlarged (see FIG. 3).

  With reference to FIG. 2 or FIG. 3, the moving member 15 can be operated by using a hook-shaped bind driving device 8 connected to a tool portion 71 of the common operation rod 7 described later. Referring to FIG. 4, the flange 15 f of the moving member 15 has a bottom surface operated by the binding tool 8.

(Composition of common operation stick)
Next, the configuration of the common operation rod for operating the bird harm prevention device 10 will be described.

  Referring to FIG. 8, the common operation stick 7 according to an example includes a tool part 71, a handle part 72, and a grip part 73. A tip tool such as a bind driver 8 described later is detachable from the tool portion 71 (see FIG. 10). The grip portion 73 is provided with a non-slip so as to be easily gripped by an operator. The handle portion 72 connects the tool portion 71 and the grip portion 73, and is formed of a long tube having insulation properties.

  Referring to FIG. 8, the handle portion 72 has a conical drainer flange 7 a attached to an intermediate portion. The drainage flange 7a can block the water coming out of the tool part 71. In addition, a conical limit flange 7b is attached to the connection between the handle 72 and the grip 73. The mounting position of the limit flange 7b indicates a limit at which the common operation rod 7 can be safely operated in consideration of insulation.

  Referring to FIG. 8 or FIG. 9, the tool portion 71 includes a cylindrical shaft portion 71a and a pair of pins 71b. The tool part 71 has a push rod 71c and a ring nut 71d. The shaft 71 a protrudes in the axial direction of the handle 72. The pair of pins 71b, 71b project from the outer periphery of the shaft 71a in opposite directions.

  Referring to FIG. 8 or FIG. 9, the push rod 71c is urged by a compression coil spring (not shown) built in the shaft 71a, and protrudes from the distal end surface of the shaft 71a.

  Referring to FIG. 8 or FIG. 9, the ring nut 71d is disposed below the shaft 71a. The ring nut 71d is screwed with the shaft 1a. The ring nut 71d is preferably made of an insulating synthetic resin.

  When the ring nut 71d is rotated in one direction, it comes into contact with the bottom surface of a joint portion 81 of the binding tool 8 described later (see FIG. 10), and the binding tool 8 can be fixed. When the ring nut 71d is rotated in the other direction, the ring nut 71d is separated from the bottom surface (see FIG. 11) of the joint portion 81 of the bind driving device 8 described later, and the bind driving device 8 can be released.

  Referring to FIG. 8 or 9, the common operation rod 7 further includes a cylindrical joint portion 74 at a base end portion. The joint part 74 is formed in a cylindrical shape with an open bottom surface. The joint portion 74 has a shaft hole 74a into which a shaft portion of a not-shown adder rod is fitted, and an engagement groove 74b.

(Structure of the binding machine)
Next, the configuration of the bind driving device 8 according to an example will be described. With reference to FIG. 8 or FIG. 9, a tip tool such as a hook-shaped binding tool 8 can be attached to the tool portion 71 of the common operation rod 7 (see FIG. 10).

  Referring to FIG. 10, the bind driving device 8 includes a rod-shaped shaft portion 8s and a hook portion 8a. The hook portion 8a is bent in a C shape continuously from the shaft portion 8s. The binding device 8 includes a columnar pin portion 8p. The pin portion 8p protrudes from the shaft portion 8s on the side opposite to the opening 8k of the hook portion 8a. It should be noted that the name of the bind driving device is derived from being able to operate the bind line that supports the high-voltage distribution line on the insulator.

  Referring to FIG. 10, the bind driving device 8 includes a cylindrical joint portion 81 at a base end. The joint part 81 is formed in a cylindrical shape with an open bottom surface. The joint portion 81 has a shaft hole 81a into which the shaft portion 71a (see FIG. 9) fits. The joint portion 81 has a pair of T-shaped engagement grooves 81b. After a pair of pins 71b, 71b (see FIG. 9) are inserted in the axial direction of the shaft hole 81a, the pins 71b, 71b are rotated in the circumferential direction of the shaft hole 81a, so that the pins 71b, 71b are rotated. It can engage with the engaging grooves 81b. The above-mentioned engagement means is called a twist lock.

  8 to 10, when tool portion 71 and joint portion 81 are fitted, push rod 71c resiliently presses the upper wall of shaft hole 81a, and ring nut 71d contacts the bottom surface of shaft hole 81a. By contact, the binding tool 8 can be securely fixed to the tool portion 71.

[Action of bird harm prevention device]
Next, the operation and effects of the bird harm prevention device 10 will be described while supplementing the configuration of the bird harm prevention device 10 according to the embodiment.

  Referring to FIG. 1 or FIG. 2, the bird harm prevention device 10 is an imaginary virtual tying that connects the tip edges of the pair of branch rods 13 with the arm metal attachment 2 fixed to the other end of the main shaft member 11. It is preferable to reduce the diameter of the circumference Cv (see FIG. 2).

  Using the insulating operation rod 5 (see FIG. 6 or FIG. 7), the gripping piece 24 provided on the arm fitting 2 is gripped, and the bird harm prevention tool 10 with the arm fitting 2 is raised to form a set. The bird harm prevention device 10 can easily pass between the edge lines We and We (see FIG. 11).

  Referring to FIG. 1, after fixing the arm member mounting bracket 2 to the arm member A, the moving member 15 is connected to one end of the main shaft member 11 by using the binding tool 8 connected to the tool portion 71 of the common operating rod 7. By moving toward the side, the virtual circumference Cv of the bird harm prevention device 10 can be expanded (see FIG. 3).

  With reference to FIG. 2 or FIG. 3, in order to maintain a state in which the virtual circumference Cv connecting the tip edges of the pair of branch rods 13, 13 is enlarged, the main shaft member 11 is attached to the bottom surface of the moving member 15. It has a clasp 16 which can be freely contacted. The clasp 16 is disposed so as to be able to protrude and retract from the outer periphery of the main shaft member 11. By pressing the clasp 16, the virtual circumference Cv of the bird harm prevention device 10 can be reduced.

  The bird harm prevention device 10 according to the embodiment includes a pair of branch rods 13 rotatably connected to the main shaft member 11 via a main shaft member 11 extending straight and a branch member 12 provided in the axial direction of the main shaft member 11. 13 and a receiving member rotatably connected at one end to the intermediate portion of the branch rod 13 and rotatably connected at the other end to the outer peripheral portion of the moving member 15, and configured in an umbrella skeleton. doing.

  The bird harm prevention device 10 according to the embodiment can easily pass through the bird harm prevention device 10 between a set of edge lines We and We by closing the bird harm prevention device 10, Opening an umbrella can make bird nesting difficult.

The bird harm prevention device according to the present invention can be expected to have the following effects.
(1) It can be easily mounted even in a narrow space with an edge line or the like.
(2) There is no need to worry about the stick that prevents birds from coming into contact with the edge line.
(3) It is not necessary to cover the edge line with an armor such as an insulating sheet in advance.
(4) The installation time of the bird harm prevention device can be reduced.
(5) Space can be saved by folding the bird harm prevention device.

  Although the bird harm prevention device according to the present invention discloses the embodiment in which the six flying prevention rods are radially arranged on the outer periphery of the main shaft member, the number of these flying prevention rods may be increased.

DESCRIPTION OF SYMBOLS 10 Bird harm prevention tool 11 Main shaft member 12 Branching member 13 · 13 Pair of branch rods 15 Moving member 141-143 Bone receiving member Cv Virtual circumference

Claims (4)

A main shaft member extending straight,
A plurality of branch members fixed at one end side of the main shaft member, with a predetermined interval provided in the axial direction of the main shaft member,
A pair of branch rods whose base end is rotatably connected to the branch member, and whose distal end extends in opposite directions from the branch member;
A bone receiving member having one end rotatably connected to an intermediate portion of the branch bar,
A disk-shaped moving member rotatably connected to the other end of the bone receiving member at an outer peripheral portion thereof and movably connected to the other end of the main shaft member;
A plurality of pairs of branch rods are radially arranged in a state where they do not intersect in the outer peripheral direction,
In a state where the branch bar is inclined downward from the branch member, the main shaft member, the branch bar, and the bone receiving member constitute a closed link,
In a state where the moving member has moved toward the one end side of the main shaft member, a virtual circumference connecting the leading edges of the pair of branch rods is expanded,
A bird harm prevention device that reduces a virtual circumference connecting front end edges of the pair of branch rods when the moving member moves toward the other end of the main shaft member.   In a state where the main shaft member is standing up, a supporting portion for supporting the other end portion of the main shaft member on one end side, and a metal arm mounting bracket further having a holding portion detachable to the arm metal at the other end side. The bird harm prevention device according to claim 1, which is provided. The main shaft member has a clasp that can abut on the bottom surface of the moving member in order to maintain a state in which a virtual circumference connecting the leading edges of the pair of branch rods has an enlarged diameter.
The bird harm prevention device according to claim 1, wherein the clasp is disposed so as to be able to protrude and retract from an outer periphery of the main shaft member.   The moving member has a bottom surface operated by a hook-shaped binding tool connected to the tool portion of a common operation rod having a tool portion at a distal end portion to which a tip tool having a different purpose can be freely connected. 4. The bird damage preventive device according to any one of 1 to 3.

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