Bird damage prevention device

Abstract

To provide a new bird damage prevention tool for reducing the burden of work.SOLUTION: The bird damage prevention tool includes two end members, at least one of which is movably attached to a cable, a wire erected at a portion between the two end members, and a first intermediate member supported by the wire and encircling the cable.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a bird damage prevention device.

Background Art

[0002] Devices for preventing bird damage to cables such as electric wires are known (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Conventional devices require a lot of labor to remove the device when working on the cable or around the cable, which has been a burden on the operator.

Means for Solving the Problems

[0005] In consideration of the above problems, in one aspect, the present invention provides a bird damage prevention device including: two end members, at least one of which is movably attached to a cable; a wire installed between the two end members; and a first intermediate member supported by the wire and surrounding the cable.

Effects of the Invention

[0006] According to the present invention, a new bird damage prevention device capable of reducing the work burden can be provided.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

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Figure 8

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Figure 12

Mode for Carrying Out the Invention

[0008] <Embodiment> (Overview) Referring to FIGS. 1 to 12, a bird damage prevention device 1 according to an embodiment of the present invention will be described.

[0009] The bird damage prevention device 1 is a device for preventing birds from staying. In the present embodiment, as shown in FIG. 1, it is installed on an electric wire 200 which is an example of a cable.

[0010] In the following description, as shown in FIGS. 1 and 2, etc., the horizontal direction substantially coinciding with the direction in which the electric wire 200 is strung is defined as the axial direction, and each direction is defined based on this axial direction. Specifically, for the direction orthogonal to the axial direction, it is defined as the vertical direction extending vertically and the left - right direction extending horizontally.

[0011] Also, for each component constituting the bird damage prevention device 1, the direction of each component will be described based on the state where the bird damage prevention device 1 is installed on the electric wire 200 (the state in FIG. 1(a), hereinafter referred to as the "installed state"). In addition, the view when looking in the axial direction may be regarded as the front view, and the view when looking in the left - right direction may be regarded as the side view.

[0012] The bird damage prevention device 1 includes two gripping members 2, a plurality of relay members 3, and a rope 4. In particular, the gripping member 2 and the relay member 3 fixed to the gripping member 2 constitute an end member 10 (FIG. 1). The rope 4 has both ends supported by the end member 10 and is tensioned, and is installed so as to extend substantially parallel to the electric wire 200. The rope 4 supports the relay member 3 at the intermediate portion. In each figure, a state where four ropes 4 are installed at one location each above and below, and left and right of the electric wire 200 is shown.

[0013] (Relay member) As shown in FIGS. 3 to 9, the relay member 3 includes a surrounding portion 31 formed in a substantially annular shape when viewed in the axial direction, a connecting portion 32 removably fixed to the surrounding portion 31, and a fixture 33. The relay member 3 is supported by a rope 4 connected to the connecting portion 32 and is installed so as to surround the electric wire 200.

[0014] The surrounding part 31 mainly includes semi-circular parts 311 and 312 each having an arc shape with a central angle of 180 degrees, a fastener 313, and a hinge 314. In the installed state, the electric wire 200 passes through the approximate center of the surrounding part 31.

[0015] The semi-circular part 311 and the semi-circular part 312 are formed in substantially the same shape, but a protrusion 311A extending substantially in the axial direction is formed at one end of the semi-circular part 311. The semi-circular parts 311 and 312 both have a C-shaped or U-shaped cross-sectional shape (Fig. 4(b)).

[0016] In addition, a plurality of through holes 31A extending substantially in the axial direction are formed in the semi-circular parts 311 and 312. The through holes 31A are formed at a plurality of locations so as to be arranged at equal intervals in the circumferential direction of the semi-circular parts 311 and 312. The through holes 31A function as attachment sites for a connection part 32 and a gripping member 2 described later.

[0017] Both the semi-circular parts 311 and 312 include one end to which the fastener 313 is attached and the other end on the opposite side of the one end and connected to the hinge 314. The one ends of the semi-circular parts 311 and 312 can be fixed by the fastener 313, and the other ends are connected to each other by the hinge 314 so as to be swingable.

[0018] Since the semi-circular parts 311 and 312 swing about the hinge 314, the surrounding part 31 can be opened and closed between two shapes, a closed shape (Fig. 3) and an open shape (Fig. 4). That is, the surrounding part 31 can take not only a closed annular shape (Fig. 3, closed shape) but also a shape in which a part is separated and opened (Fig. 4, open shape).

[0019] The fastener 313 is swingably connected to the semi-circular part 312 and further has a hook-shaped end that can hook the protrusion 311A. The fastener 313 can be connected to or separated from the protrusion 311A by swinging with respect to the semi-circular part 312.

[0020] When the protrusion 311A engages with the fastener 313, the semi-circular portions 311 and 312 are fixed to each other, and the surrounding portion 31 can maintain a closed shape. Conversely, when the fastener 313 is separated from the protrusion 311A, the surrounding portion 31 can take an open shape.

[0021] As shown in FIG. 5, the connecting portion 32 is a substantially cubic member, and has a front surface 321 facing axially in the installed state and two side surfaces 322 orthogonal to the front surface 321. Further, in the connecting portion 32, three through holes 32A arranged in the radial direction of the surrounding portion 31 in the installed state, three through holes 32B arranged in parallel with the through holes 32A, and a through hole 32C formed at an end of the connecting portion 32 are formed. The through hole 32C extends so as to be orthogonal to the front surface 321.

[0022] The through hole 32A does not extend so as to be orthogonal to the front surface 321 of the connecting portion 32, but extends so as to form an angle -α (where counterclockwise is positive) with respect to the direction orthogonal to the front surface 321 (FIGS. 5 and 7(b)).

[0023] On the other hand, the through hole 32B extends so as to form an angle +α with respect to the direction orthogonal to the front surface 321 (FIG. 7(b)). In this way, the gradient of the through hole 32B is opposite to that of the through hole 32A.

[0024] Specifically, as shown in FIG. 8(c), the angles ±α of the through holes 32A and 32B are set according to the gradient of the electric wire 200. The specific numerical value of α is appropriately set according to the actual shape in consideration of the distance between the fulcrums and the weight of the electric wire 200.

[0025] The through holes 32A and 32B also extend in the circumferential direction of the surrounding portion 31 in the installed state, and form a slit 322A extending in the axial direction on the side surface 322 (FIG. 5(b)).

[0026] The connecting part 32 is fixed to the surrounding part 31 by a fixture 33. Specifically, the fixture 33 has a magnetized bolt 331 and a nut 332. The bolt 331 is inserted into both the through-hole 32C and the through-hole 31A, and the nut 332 is tightened onto the bolt 331. In this way, the connecting part 32 is fixed so as to protrude radially outward from the surrounding part 31 as shown in FIG. 6 and the like. Also, by releasing the fastening by the fixture 33, the connecting part 32 can be removed from the surrounding part 31. Further, since at least one of the bolt 331 and the nut 332 is magnetized, the work of fastening and releasing the fastening by the fixture 33 is easy, and furthermore, the dropping of parts is prevented.

[0027] Regarding the arrangement position of the connecting part 32 with respect to the surrounding part 31, various variations are prepared according to the number and position of the ropes 4. As an example, arrangements such as those shown in FIGS. 6(a) to (f) can be considered, but this is not the limit. For example, it is also possible to connect only one connecting part 32 to the surrounding part 31. When determining the arrangement position of the connecting part 32, various factors are considered, such as the type and size of the bird, the installation interval of the relay member 3, and the ease of vibration of the rope 4.

[0028] (Rope) As shown in FIG. 7 and the like, the rope 4 is composed of a plurality of ropes 41 of the same length. The plurality of ropes 41 are connected to the connecting part 32 and are arranged so as to extend along the electric wire 200 (FIG. 2). The rope 41 supports the relay member 3 via the connecting part 32.

[0029] The rope 41 is made of a resin such as vinyl chloride or a glass fiber and is formed flat except at both ends. The rope 41 has a rectangular cross section. Also, the rope 41 has cylindrical portions 411 and locking portions 412 at both ends. The cylindrical portions 411 are formed in a substantially cylindrical shape, and their diameter is smaller than the width of the slit 322A.

[0030] The engaging portion 412 is a substantially hemispherical member fixed to the end of the cylindrical portion 411. The outer diameter of the engaging portion 412 is larger than the diameter of either the through hole 31A or the through hole 32B.

[0031] When the rope 41 is connected to the connecting portion 32, the cylindrical portion 411 is inserted into either the through hole 32A or the through hole 32B through the slit 322A. Even if tension is applied to the rope 41, the engaging portion 412 contacts the front surface 321, preventing the rope 41 from falling off the connecting portion 32. Further, when the engaging portion 412 contacts the front surface 321, the movement of the connecting portion 32 in the substantially axial direction of the rope 41 is restricted.

[0032] How the rope 41 is connected to the connecting portion 32 is determined according to the arrangement position of the connecting portion 32, as shown in FIG. 8. For ease of understanding, FIG. 8 shows a state where the semi-circular portions 311 and 312 are respectively arranged at the lower and upper portions of the surrounding portion 31. In addition, position numbers (1) to (14) are assigned to each of the through holes 31A.

[0033] When the position of the through hole 31A to which the connecting portion 32 is connected is any one of (1) to (4), (12) to (14), one end of the rope 41 is inserted into the through hole 32A and the other end is inserted into the through hole 32B (upper figure in FIG. 8(b)). On the other hand, when the position of the through hole 31A to which the connecting portion 32 is connected is any one of (5) to (11), both ends of the rope 41 are inserted into the through hole 32A or both ends are inserted into the through hole 32B (lower figure in FIG. 8(b)).

[0034] In other words, as shown in FIGS. 8(a) and 8(b), when the rope 41 is connected to the connecting portion 32 fixed to the upper portion of the surrounding portion 31, one end of the rope 41 is inserted into the through hole 32A and the other end is inserted into the through hole 32B. In contrast, when the rope 41 is connected to the connecting portion 32 fixed to the lower portion of the surrounding portion 31, both ends of the rope 41 are inserted into the through hole 32A or both ends are inserted into the through hole 32B.

[0035] By adopting such a connection method, as shown in Fig. 8(c), the distance between the two connection parts 32 connected by the rope 41 can be made shorter above the electric wire 200 than below. By changing the distance between the connection parts 32 above and below the electric wire 200, following the shape of the electric wire 200, the ropes 41 are installed without being bent respectively. Along with this, the surrounding part 31 is installed so as to extend in a direction orthogonal to the electric wire 200. In this way, the entire bird damage prevention device 1 is installed so as to follow the deflection shape of the electric wire 200.

[0036] Also, regarding which of the through holes 32A and 32B is used to connect the rope 41, it is selected according to the gradient of the rope 41 with respect to the connection part 32 (Fig. 7(b)). As described above, different gradients are provided for the through holes 32A and 32B. By selecting the through holes 32A and 32B that match the gradient of the rope 41 installed substantially parallel to the electric wire 200, it is possible to prevent a large bending load from being applied to the cylindrical part 411 or the load applied to the locking part 412 from being uneven.

[0037] (Gripping member and end member) The gripping member 2 is a member installed at both ends of the bird damage prevention device 1, and has a function of gripping the electric wire 200 and supporting the relay member 3 (Fig. 9).

[0038] As shown in Figs. 9 to 12, the gripping member 2 mainly includes gripping parts 21 and 22 that sandwich and grip the electric wire 200, a screw 23, a rotating part 24, a joining tool 25 including a bolt and a nut, a fixing tool 26, and a joining tool 27 including a bolt and a nut.

[0039] The gripping parts 21 and 22 are members facing each other, and can grip by sandwiching electric wires 200 with various diameters between the gripping parts 21 and 22 (Figs. 9 and 10).

[0040] A cylindrical member 211 is attached to the holding part 21, and a cylindrical member 221 is attached to the holding part 22. The cylindrical members 211 and 221 are cylindrical members as shown in Fig. 12(b) and have the same shape. The cylindrical members 211 and 221 are respectively embedded in the holding parts 21 and 22 so as to be rotatable (indicated by arrows in Fig. 11(c)). Female threads 211A and 221B are formed in the cylindrical members 211 and 221 so as to penetrate them in the radial direction, and can be joined to the screw 23.

[0041] Joint parts 212 and 222 are respectively formed at the ends of the holding parts 21 and 22. Through holes into which the joining tool 25 is inserted are formed in both of the joint parts 212 and 222 (Fig. 12).

[0042] The joining tool 25 is a substantially cylindrical member and joins the joint parts 212 and 222 so as to be swingable relative to each other (Figs. 9 and 11).

[0043] The screw 23 is a substantially cylindrical member, and threads are cut on its outer peripheral part. The screw 23 is installed so as to penetrate the holding parts 21 and 22. The screw 23 joins to both of the female threads 211A and 221B. When the screw 23 rotates, the cylindrical members 211 and 221 move according to the spiral shape of the screw and move away from or close to each other. Accordingly, the holding parts 21 and 22 can be opened and closed between two states, an open state (Fig. 11(d)) and a closed state (Fig. 11(c)).

[0044] The rotating part 24 is a substantially cylindrical member fixed to the end of the screw 23. An operator can hold and rotate the rotating part 24 using a tool (not shown) or the like. As the rotating part 24 rotates, the screw 23 rotates and the holding parts 21 and 22 open and close.

[0045] The fixture 26 is a member having a U-shaped or C-shaped cross section in a sectional view, and two openings 26a and an opening 26b are formed (Fig. 12(b)). The opening 26a is formed to have substantially the same diameter as the through hole 31A. The fixture 26 is fixed to the holding parts 21 and 22 by the joining tool 25 inserted into the opening 26b (Fig. 9).

[0046] The joining member 27 is a substantially cylindrical member and has a function of joining the fixture 26 and the surrounding portion 31. Specifically, the joining member 27 joins the fixture 26 and the surrounding portion 31 by being inserted into the opening 26a and the through-hole 31A.

[0047] As described above, the gripping member 2 and the relay member 3 fixed to the gripping member 2 constitute the end member 10. By the gripping member 2 gripping the electric wire 200, the rope 4 can be held via the relay member 3 and further tension can be applied.

[0048] (Installation work, etc.) The procedure for installing the bird damage prevention device 1 will be described. First, the operator operates the fastener 313 to open and close the surrounding portion 31 and installs the relay member 3 so as to surround the electric wire 200.

[0049] Before and after installing the relay member 3, the operator installs the rope 41 between the connecting portions 32. The installation of the rope 41 is carried out by passing the cylindrical portion 411 through the slit 322A as described above.

[0050] By the operator sliding (sliding) the gripping members 2 (end member 10) at both ends along the electric wire 200 or moving them away from the electric wire 200, the bird damage prevention device 1 expands in the axial direction and further the ropes 41 are each in a state of being tensioned. The operator rotates the rotating portion 24 using a tool or the like to close the gripping portions 21 and 22 so that the gripping member 2 grips the electric wire 200 (Fig. 9). By such a simple operation, the bird damage prevention device 1 is installed on the electric wire 200 (Fig. 1(a)).

[0051] When any work on the electric wire 200 such as maintenance and management is required, the following operations are performed on the bird damage prevention device 1.

[0052] First, the operator rotates the rotating part 24 in one of the gripping members 2 to open the gripping parts 21 and 22, loosening the force with which the gripping member 2 grips the electric wire 200 or releasing the gripped state. Next, the operator moves the gripping member 2 (end member 10) along the electric wire 200 to shorten the overall length of the bird damage prevention device 1 to the state shown in Fig. 1(b).

[0053] Since the part that was inside the bird damage prevention device 1 or surrounded by it is now exposed, the operator can perform necessary work on the electric wire 200, such as attaching a construction protection tube to the electric wire 200. After the work is completed, the operator moves the gripping member 2 (end member 10) again to extend the bird damage prevention device 1 and return it to the state shown in Fig. 1(a).

[0054] <Modification Example> In the above embodiment, the surrounding part 31 is formed in an annular shape, but it may be formed in other shapes. For example, the surrounding part 31 can be formed in a polygonal shape, an oval shape, etc. The oval shape is a concept that includes a perfect circle, an ellipse, an oblong, and an egg shape, and is characterized by a figure formed by a smooth continuous curve that bulges outward. Also, the surrounding part 31 does not necessarily have to have a symmetrical or smooth shape. Further, the surrounding part 31 does not necessarily have to be annular, and can take a shape with a part open, such as a C shape.

[0055] Regarding the method of inserting the rope 41 (rope 4) into the through holes 32A and 32B, it is not limited to the method of passing it through at the same height as in the above embodiment. For example, the rope 41 can be inserted at any of the positions shown in Figs. 5(a) to (w), (a) to (u). The location where the rope 41 is inserted is appropriately selected in consideration of the shape of the electric wire 200, the distance between the connection parts 32, etc., as described above. Therefore, it is also possible to connect one end of the rope 41 to position (a) and the other end to position (u).

[0056] The rope 4 does not necessarily have to be configured with a plurality of ropes 41. The rope 4 may be a continuous single line. In that case, the connecting portion 32 can be connected to the rope 4 by a method such as tying the rope 4 to the connecting portion 32 or using a separate fixing member.

[0057] It is also possible to have only one gripping member 2 provided in the bird damage prevention device 1. Even with such a configuration, the gripping member 2 can be moved relative to the electric wire 200 to perform the expansion and contraction of the bird damage prevention device 1.

[0058] The end member 10 does not necessarily have to include the relay member 3. For example, it is also possible to adopt a configuration in which the end of the rope 4 is supported by the gripping member 2.

[0059] <Effect> The bird damage prevention device 1 according to the above-described embodiment and modification includes two end members 10 movably attached to the electric wire 200 (corresponding to a cable), a rope 4 (corresponding to a wire) installed between the end members 10, and a relay member 3 (corresponding to an intermediate member) supported by the rope 4 and surrounding the electric wire 200.

[0060] In the above configuration, since the end member 10 is movable relative to the electric wire 200, the bird damage prevention device 1 can be freely expanded and contracted along the electric wire 200. Therefore, the bird damage prevention device 1 can be expanded and contracted to easily expose the electric wire 200, and various operations can be performed on the electric wire 200. Further, since the relay member 3 is not directly supported by the electric wire 200 at locations other than the end member 10, the relay member 3 and the rope 4 can vibrate. When a bird tries to stay on the rope 4 or the relay member 3, the relay member 3 and the rope 4 vibrate up and down, left and right, or vibrate in a rotational manner about the electric wire 200 due to the movement and weight of the bird, disturbing the bird's rest and effectively driving the bird away.

[0061] In the embodiment, the relay member 3 has an enclosing portion 31 that surrounds the electric wire 200 and a connecting portion 32 that is removably attached to the enclosing portion 31 and to which the rope 4 is connected.

[0062] In the above configuration, since the connecting portion 32 is removable, the arrangement position of the connecting portion 32 can be changed according to the type of bird and the installation conditions (Fig. 6). Therefore, bird damage can be effectively prevented.

[0063] The surrounding portion 31 is formed in an annular or polygonal shape, and the connecting portion 32 extends in the radial direction of the surrounding portion 31 when attached to the surrounding portion 31.

[0064] In the above configuration, since the connecting portion 32 extends in the radial direction of the surrounding portion 31, the relay member 3 and the rope 4 can swing under a light load. Therefore, bird damage can be effectively prevented.

[0065] In the surrounding portion 31, through holes 31A (attachment portions) enabling attachment of the connecting portion 32 are formed so as to be arranged in the circumferential direction of the surrounding portion 31.

[0066] With the above configuration, the connecting portion 32 can be easily attached to and detached from the surrounding portion 31.

[0067] A plurality of through holes 32A, 32B (corresponding to connection holes) are formed in the connecting portion 32, and the rope 4 is connected to the connecting portion 32 by being inserted into either of the through holes 32A, 32B.

[0068] In the above configuration, by appropriately selecting the through hole into which the rope 4 is inserted, the distance between the connecting portions 32 can be appropriately adjusted (Fig. 8). The connecting portion 32 and the rope 4 can be installed following the shape of the electric wire 200.

[0069] The rope 4 is composed of a plurality of ropes 41 (corresponding to partial wires). Cylindrical portions 411 to be inserted into the through holes 32A, 32B are formed at both ends of the rope 41, and the rope 41 is connected to the connecting portion 32.

[0070] When the rope 41 is connected to both ends of the connecting portion 32, the connecting portions 32 are arranged at equal intervals according to the length of the rope 41. Since the relay member 3 can be installed without adjusting the interval, the installation work of the bird damage prevention device 1 becomes simple.

[0071] The through holes 32A and 32B extend so as to match the gradient of the rope 4 or the electric wire 200.

[0072] Since the through holes 32A and 32B that conform to the gradient of the rope 4 substantially parallel to the electric wire 200 can be selected, it is possible to prevent the cylindrical portion 411 from being bent more than necessary or the load applied to the locking portion 412 from being uneven. Therefore, the situation where the rope 4 is cut or deteriorates prematurely is prevented.

[0073] The end member 10 includes a gripping member 2 that slidably grips the electric wire 200, an enclosing portion 31 (corresponding to an end enclosing portion) that is supported by the gripping member 2 and encloses the electric wire 200, and a connecting portion 32 (corresponding to an end connecting portion) that is removably attached to the enclosing portion 31 and to which the end of the rope 4 is connected.

[0074] With the above configuration, the relay member 3 can be used as it is to support the end of the rope 4 and function as a member for applying tension. Since the gripping member 2 has a simple configuration and the types and numbers of parts of the entire bird damage prevention device 1 can be reduced, the assembly and installation work is easy and the manufacturing cost can be reduced.

[0075] The rope 4 and the rope 41 have a flat cross-section or a rectangular cross-section. By adopting a cross-sectional shape that is easy for birds to perch on, birds can be attracted instead of the electric wire 200 and vibrations can be applied to drive them away. Therefore, bird damage to the electric wire 200 can be prevented.

Description of Reference Numerals

[0076] Bird damage prevention device 1 Gripping member 2 Relay member 3 Rope 4 End member 10

Claims

1. two end members, at least one of which is movably attached to the cable; a wire stretched between the two end members; a first intermediate member supported by the line and surrounding the cable; The first intermediate member is a first enclosing portion enclosing the cable; a first connection portion that is removably attached to the first surrounding portion and to which the wire is connected; the first connection portion has a front surface parallel to the radial and circumferential directions of the first surrounding portion, and has a plurality of first connection holes formed therein to which the wires can be connected; At least one of the plurality of first connection holes extends in a vertical direction so as to form an inclination different from 0 degrees with respect to a normal to the front surface. Bird damage prevention equipment.

2. The first surrounding portion is formed in a ring or polygonal shape, the first connection portion extends in the radial direction when attached to the first surrounding portion; The bird damage prevention device according to claim 1.

3. The first surrounding portion has a plurality of attachment portions that allow the first connecting portion to be attached, and the attachment portions are arranged in a circumferential direction of the first surrounding portion. The bird damage prevention device according to claim 1 or 2.

4. a second intermediate member having a second enclosing portion that encloses the cable and a second connection portion that is removably attached to the second enclosing portion and to which the wire is connected; a plurality of second connection holes are formed in the second connection portion; the wire is connected to the first connection portion and the second connection portion by being inserted into one of the plurality of first connection holes and one of the plurality of second connection holes; The bird damage prevention device according to any one of claims 1 to 3.

5. the line is composed of a plurality of partial lines, At least one of the plurality of partial lines has one end that can be inserted into each of the plurality of first connection holes and another end that can be inserted into each of the plurality of second connection holes. The bird damage prevention device according to claim 4.

6. A bird pest prevention device as described in claim 4 or 5, wherein the gradient matches the gradient of the cable at the point surrounded by the first enclosing portion.

7. At least one of the two end members is a gripping member that slidably grips the cable; an end enclosing portion supported by the gripping member and enclosing the cable; an end connection portion removably attached to the end enclosing portion and to which an end of the wire is connected; The bird damage prevention device according to any one of claims 1 to 6.

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