JP2016208613A - Bird damage prevention tool mounted on overhead conductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bird damage prevention tool which can be easily attached to and detached from a cable that is tensed in the air.SOLUTION: A plurality of bird damage prevention tools to be mounted on the overhead conductor are connectable to each other. A substantially cylindrical unit prevention tool body (1) including a plurality of needle-like projections (2) that protrude radially outwards at predetermined intervals in a circumferential direction and an axial direction, a plurality of holes (3) that are formed between the needle-like projections (2) and a notch in parallel with the axial direction is formed from a synthetic resin having electric insulation and flexibility. In both ends of the unit prevention tool body (1) in the axial direction, a first coupling part (5) and a second coupling part (6) each of which is formed from an arcuate band plate are formed integrally. Notches (4) to be generated in the first and second coupling parts (5) and (6) can be closed by elastically opening/closing seal pieces (7) and (8). The unit prevention tool body (1) is configured in such a manner that the first coupling parts (5) to be connected can be coupled with each other or the second coupling parts (6) to be connected can be coupled with each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bird damage prevention tool attached to an overhead electric wire such as a power transmission line or a lead-in line in order to prevent bird damage.

  Birds or small beasts may stay on overhead power lines such as power transmission lines and service lines. If birds and beasts stay on the overhead electric wire in this way, the surroundings may be soiled by feces, feathers, etc., or the wire coating may be damaged or a short-circuit accident may occur.

  As a conventional technique of a bird damage prevention tool for preventing such damage caused by birds and beasts, for example, a rotary bird damage prevention tool described in Patent Document 1 can be cited. This bird damage prevention device is capable of connecting a plurality of prevention device bodies composed of a pair of halved cylindrical bodies made of a synthetic resin having electrical insulation and flexibility, and surrounding each prevention device body. A plurality of needle-like projections projecting outward in the radial direction at predetermined intervals in the direction and the axial direction are projected, and through holes are provided between the needle-like projections, and one end in the axial direction of the preventer main body A first fitting portion is provided on the first portion, and a second fitting portion detachably attached to the first fitting portion of the different prevention device main body is formed at the other axial end of the prevention device main body. From the end surface of at least one of the second fitting portions, a tapered end surface side protrusion is projected outward in the axial direction of the preventer main body.

Japanese Patent No. 5225944

  The above-described conventional bird harm prevention device includes a cylindrical body that is fitted into an overhead electric wire (cable) such as a power transmission line by connecting a pair of half-cylinders that are hinge-joined at a side wall portion along the axial center. Therefore, engagement / release of the free end portion that is not hinge-joined is required to attach to and detach from the cable. However, since the attaching / detaching operation of the bird damage prevention tool is an operation at a high place, the operation of engaging / disengaging the connecting portion formed at the free end portion of the half cylinder is dangerous and difficult. It will be.

  This invention is proposed in view of this point, and it aims at providing the bird damage prevention tool which can perform attachment or detachment work easily with respect to the cable stretched in the air.

  In order to achieve the above-mentioned object, the invention according to claim 1 is a bird damage prevention device that is attached to an overhead electric wire in a state where a plurality of wires are connected to each other, and has a predetermined interval in the circumferential direction and the axial direction. Electrically insulates the substantially cylindrical prevention body having a plurality of needle-like protrusions protruding radially outward, a plurality of through-holes formed between the needle-like protrusions, and a notch parallel to the axial direction. The first connecting portion formed of an arc-shaped strip is integrally formed with one end portion in the axial direction of the main body of the prevention device and the other end portion in the axial direction of the main body of the prevention device. The second connecting portion formed of an arc-shaped strip is integrally formed, and the cutout portions generated in the first and second connecting portions are configured to be able to be closed with sealing pieces that can be elastically opened and closed, and the preventer main body is connected. The first connecting portions or the second connecting portions are configured to be connectable with each other. To have.

  In the invention described in claim 2, in addition to the configuration described in claim 1, in the first connecting portion, a connecting piece is integrally extended outwardly along the diameter of the main body of the protective device on the outer end surface in the axial direction. An engaging protrusion is formed to protrude outwardly on the outer surface of one of the connecting pieces, and an engaging protrusion fitting hole is provided at a location corresponding to the engaging protrusion of the other connecting piece. In the connecting portion, a connecting piece is integrally extended outwardly along the diameter of the prevention device main body on the outer end surface in the axial direction, and an engaging protrusion is formed to protrude outwardly on the outer surface of the one connecting piece, and the other An engagement projection fitting hole is formed through a portion of the connecting piece corresponding to the engagement projection, and a coupling hole is formed through the outer peripheral surface at the outer end in the axial direction.

  According to a third aspect of the present invention, in addition to the configuration described in the first or second aspect, the notch portion generated in the first connecting portion includes a guide piece that continuously protrudes from one end surface in the circumferential direction of the first connecting portion. The other end surface in the circumferential direction is configured to be elastically sealed by making the sealing piece along the inner peripheral surface of the first connecting portion where the guide piece is extended, and a notch portion generated in the second connecting portion is formed. A free-end portion of a V-shaped continuous piece extending in a substantially V-shape from the other end surface in the circumferential direction to a guide piece formed on the inclined surface of the outer opening from the one end surface in the circumferential direction of the second connecting portion It is characterized in that it can be elastically sealed by bringing it into contact with the inner surface side of the guide piece.

  In the present invention, the prevention device main body is constituted by a cylindrical body having needle-like projections radially projecting on the outer peripheral surface and having a notch portion parallel to the axial direction on the peripheral surface, and arc-shaped bands at both axial end portions. A notch portion formed on the peripheral surface of the first and second connecting portions is closed so as to be able to be elastically opened and closed with a sealing piece extending from an end edge portion along the axial direction of the first and second connecting portions formed of a plate. Therefore, the preventer main body can be fitted onto the overhead wire by fitting the cutout portion of the protector main body to the overhead wire (cable) such as a power transmission line. Thereby, workability | operativity in a high place can be improved.

  In addition, when the first and second connecting portions of the main body of the prevention device are formed in different connection structures and the first connection portions or the second connection portions can be connected to each other for connection, the connected prevention devices Since the main body is arranged symmetrically, the main body of the protection tool is stably fitted over the overhead electric wire.

  Furthermore, the notch part which arises in the surrounding surface of the 1st, 2nd connection part of a prevention tool main body, the guide piece which protruded the circumferential direction one end surface in the 1st connection part, and the circumferential direction other end surface are said guides. The sealing piece extends along the inner peripheral surface of the first connecting portion where the pieces are extended, and is configured to be elastically openable and closable. The free end portion of the guide piece formed with an inclined surface having an outward opening and the V-shaped continuous piece formed by extending the other end surface in the circumferential direction outward in a substantially V shape is applied to the inner surface side of the guide piece. When the sealing piece is in contact with each other and can be elastically opened and closed, a stable sealing can be maintained while the opening force from the outside does not act.

It is a perspective view of the unit composition showing one embodiment of the bird harm prevention tool concerning the present invention. It is a perspective view from the reverse direction of the unit structure which shows one Embodiment of the bird damage prevention tool which concerns on this invention. It is a front view of a unit composition showing one embodiment of a bird harm prevention tool concerning the present invention. It is a top view of the unit composition showing one embodiment of the bird harm prevention tool concerning the present invention. It is a bottom view of the unit composition showing one embodiment of the bird harm prevention implement concerning the present invention. It is a left view of the unit structure which shows one Embodiment of the bird damage prevention tool which concerns on this invention. It is a right view of the unit structure which shows one Embodiment of the bird damage prevention tool which concerns on this invention.

  The drawings show an embodiment of a unit preventer main body constituting the bird damage preventer according to the present invention, and this unit preventer main body (1) is radially outward at predetermined intervals in the circumferential direction and the axial direction. A plurality of protruding needle-like protrusions (2), a plurality of through-holes (3) formed on the peripheral surface between each of the needle-like protrusions (2) and (2), and parallel to the axial direction at one circumferential position It is formed in a substantially cylindrical shape having a notch (4).

  This unit preventer main body (1) is made of a synthetic resin having electrical insulation and flexibility, and the arcuate belt is formed on one end of the unit preventer main body (1) in the axial direction. A first connecting portion (5) formed of a plate is integrally formed with a second connecting portion (6) formed of a similarly arcuate strip at the other axial end of the unit preventer body (1). It is. And the part corresponding to the notch part (4) in the first and second connecting parts (5) and (6) can be closed by elastic sealing pieces (7) and (8) described later. When the unit preventer main body (1) is connected, the first connecting portions (5) or the second connecting portions (6) of the unit preventer main bodies (1) to be connected are connected to each other. It is configured so that it can.

  Each connecting portion (5) and (6) of each unit preventer body (1) has box-like connecting pieces (9) and (10) on both sides along the diameter of the unit preventer body (1) on its axially outer end surface. ) Are integrally extended outwardly, and engaging projections (11) are formed outwardly projecting on the outer surfaces of one of the connecting pieces (9a) and (10a), and the other connecting pieces (9b) and (10b) An engagement protrusion insertion hole (12) is formed through a portion corresponding to the engagement protrusion (11). Further, in the second connecting portion (6) of each unit preventer main body (1), an ear piece (14) having a coupling hole (13) formed in the upper peripheral surface at the outer end in the axial direction, and the coupling hole A protrusion (15) that fits in (13) is integrally formed with an ear piece (16) protruding outward at a predetermined interval. The protruding amount of the connecting piece (10) at the second connecting portion (6) is shorter than the protruding amount of the connecting piece (9) at the first connecting portion (5).

  The sealing piece (7) that can close the notch (4) generated in the first connecting part (5) is a guide in which one end surface in the circumferential direction of the first connecting part (5) extends outward in parallel with the diameter. A piece (17) and a continuous piece (18) continuously provided from the other circumferential end face are continuously provided along the first connecting portion inner peripheral surface (19) where the guide piece (17) is provided continuously. The sealing piece (8) configured to be elastically sealable and capable of closing the notch (4) generated in the second connecting portion (6) is one end surface in the circumferential direction of the second connecting portion (6). The guide piece (20), which extends in parallel with the diameter, has a sloped surface with its leading end portion extended, and the other end surface in the circumferential direction is parallel to the diameter, and the portion near the leading end is folded inward. In this way, the free end portion of the V-shaped continuous piece (21) formed in a substantially V shape is brought into contact with the side surface extending from the inner peripheral surface of the guide piece (20) so that it can be elastically sealed. is there.

A procedure for mounting the unit prevention tool main body (1) having the above-described structure on an overhead wire such as a cable (power transmission line) stretched between power poles or a lead-in wire from the power pole will be described below.
The notch (4) of the unit preventer body (1) is applied to the overhead electric wire (not shown) to be protected from above, and the first connecting part (5) of the unit preventer body (1) is pushed in from above. And the sealing piece (7) (8) formed in the second connecting portion (6) is elastically deformed, and the overhead wire is taken into the unit preventer body (1), and the unit preventer body (1) Will fit into the overhead wire. At this time, the diameter of the overhead electric wire passing therethrough is regulated by the opening width of the notch (4), and the sealing formed on the first connecting portion (5) and the second connecting portion (6). Because of the presence of the pieces (7) and (8), the center of gravity of the substantially cylindrical unit preventer body (1) fitted over the overhead electric wire is lower than the center of gravity of the overhead electric wire. (1) is stable in a posture in which the side where the sealing pieces (7) and (8) exist is located on the lower side.

  When the unit preventer body (1) is subsequently attached to the overhead wire, the connection parts (5), (5), (6) of the same shape as the connection parts (5), (6) of the unit protector body (1) already installed. 6) The notch part (4) of the unit preventer body (1) connected in a posture facing the connecting parts (5) and (6) of the already installed unit preventer body (1) from above to the target overhead wire Apply, push in from above, fit the unit preventer body (1) into the overhead wire, connect the connecting parts (5) ・ (5) or (6) ・ (6) facing each other, The mounted unit preventer body (1) and the newly mounted unit preventer body (1) are integrated.

  When the first connecting portions (5) of the unit preventer main body (1) are connected to each other, the outer protrusion of the box-shaped connecting piece (9a) that integrally extends outward is formed to protrude outward. The protrusion (11) is fitted into and integrated with an engaging protrusion fitting hole (12) formed through the opposing box-shaped connecting piece (9b). When the second connecting portions (6) are connected to each other, the outer peripheral surfaces of the box-shaped connecting pieces (10a) formed to protrude outwardly at predetermined intervals on the upper peripheral surface at the outer ends in the axial direction. The engaging protrusion (11) that protrudes in the direction is fitted into and integrated with the protrusion fitting hole (12) that is formed through the opposing box-shaped connecting piece (10b), and is formed at the upper part of the peripheral surface. The prevention tool main body (1) is integrated by fitting the coupling hole (13) formed in the formed ear piece (14) and the protrusion (15) formed in the opposing ear piece (16) to face each other. To do.

  By repeating the connection between the first connection parts (5) and the connection between the second connection parts (6), a plurality of unit protection device main bodies (1) are used as the first connection part as a bird damage prevention device covering the overhead electric wire. (5) and a 2nd connection part (6) form with a series of elongate objects connected in the state located alternately.

  In the bird damage prevention device in which a plurality of unit prevention device main bodies (1) are connected in this way, the presence of sealing pieces (7) and (8) formed on both side connection portions of each unit prevention device main body (1) and Since the inner diameter of the unit preventer main body (1) is larger than the diameter of the overhead electric wire, the center of the substantially cylindrical unit preventer main body (1) fitted on the overhead electric wire is positioned lower than the center of gravity of the overhead electric wire. For this reason, the fitting posture can be stabilized. In addition, since the needle-like protrusions (2) protrude radially from the peripheral surface of the cylindrical prevention device main body (1) at a predetermined interval, the wings and the trunk of the needle-like protrusions will remain even if a bird tries to stay. It will contact (2) and will not stay on the main body of the protector fitted on the overhead wire. In addition, a plurality of through holes (3) are formed between the needle-like protrusions (2) and (2) on the peripheral surface of the cylindrical prevention device body, and a notch (4) parallel to the axial direction is formed. Since it is provided, the wind acting on the unit preventive device main body (1) is removed from the through hole (3) and the notch (4), and no extra wind pressure acts on the overhead electric wire.

  In the above-described embodiment, the sealing piece (7) of the first connecting portion (5) having the box-like connecting piece (9) extending integrally outward is connected outwardly with one end surface in the circumferential direction parallel to the diameter. The extended guide piece (17) and the continuous supply piece (18) extended from the other end in the circumferential direction are continuously provided along the inner peripheral surface (19) of the connecting portion where the guide piece (17) is extended. It has a box-like connecting piece (10) that is integrally extended outwardly and has an ear piece (14) (16) spaced at a predetermined interval on the outer peripheral surface at the outer end in the axial direction of the unit preventer body (1). ) Projecting outwardly from the second connecting portion (6), the guide piece is formed by extending one end surface in the circumferential direction parallel to the diameter and extending the leading end portion into an inclined surface. (20) and the free end portion of the V-shaped projecting piece (21) formed in a substantially V shape by continuously extending the other end surface in the circumferential direction in parallel with the diameter and folding back the leading end portion toward the inside. Side surface obtained by extending the inner peripheral surface of the guide piece (20) However, the combination of the configuration of the connecting portions (5) and (6) and the configuration of the sealing pieces (7) and (8) may be exchanged.

  DESCRIPTION OF SYMBOLS 1 ... Unit prevention tool main body, 2 ... Needle-like protrusion, 3 ... Through-hole, 4 ... Notch part, 5 ... 1st connection part, 6 ... 2nd connection part, 7 * 8 ... Sealing piece, 9 * 9a * 9b ... Connecting piece, 11 ... engagement projection, 12 ... engagement projection fitting hole, 13 ... fitting hole, 14/16 ... ear piece, 15 ... fitting projection, 17 ... guide piece, 20 ... guide piece, 21 ... V-shaped extended piece.

Claims (3)

A bird damage prevention device that is attached to an overhead electric wire in a state where a plurality of wires are connected to each other,
A plurality of needle-like protrusions (2) projecting radially outward at predetermined intervals in the circumferential direction and the axial direction, and a plurality of through-holes (3) formed between the needle-like protrusions (2) and (2) A substantially cylindrical unit preventer body (1) having a notch (4) parallel to the axial direction is made of a synthetic resin having electrical insulation and flexibility. A first connecting portion (5) formed of an arc-shaped strip is integrally formed at one end in the axial direction, and a second connection formed of an arc-shaped strip at the other axial end of the unit preventer body (1). The part (6) is integrally formed, and the notch part (4) generated in the first and second connecting parts (5) and (6) can be closed with sealing pieces (7) and (8) that can be opened and closed elastically, respectively. The unit prevention tool main body (1) is configured such that the first connecting portions (5) and (5) to be connected or the second connecting portions (6) and (6) can be connected to each other. Bird damage prevention equipment to be attached to overhead wires.   In the first connecting portion (5), a connecting piece (9) is integrally extended outwardly along the diameter of the unit preventer main body (1) on the outer end surface in the axial direction, and the outer surface of the one connecting piece (9a). An engaging protrusion (11) is formed so as to protrude outwardly, and an engaging protrusion fitting hole (12) is formed in a place corresponding to the engaging protrusion (11) of the other connecting piece (9b). In the second connecting portion (6), a connecting piece (10) is integrally extended outwardly along the diameter of the unit preventer main body (1) on the outer end surface in the axial direction, and this one connecting piece (10a) is provided. An engaging protrusion (11) is formed to protrude outwardly on the outer side surface of the other connecting piece (10b), and an engaging protrusion fitting hole (12) is formed through a portion corresponding to the engaging protrusion (11) in the other connecting piece (10b). Further, an ear piece (14) having a fitting hole (13) formed through the outer peripheral surface at the outer end in the axial direction, and a fitting protrusion (15) fitted into the fitting hole (13) The ear piece (15) protruding outward is integrally formed with a predetermined interval. Cockles preventer to be mounted to an overhead wire according to claim 1 that. The notch part (4) generated in the first connecting part (5) is divided into a guide piece (16) which is continuously extended outward from one end surface in the circumferential direction of the first connecting part (5), and the guide piece ( 16) is configured so that it can be elastically sealed by forming a sealing piece (7) along the inner peripheral surface of the first connecting part that is continuously extended,
The notch portion (4) generated in the second connecting portion (6) is surrounded by a guide piece (20) formed on the inclined surface of the outward opening from one end surface in the circumferential direction of the second connecting portion (6). By making the free end portion of the V-shaped continuous piece (21) extending in a substantially V shape from the other end surface in the direction abut on the inner surface side of the guide piece (20), the sealing piece (8) is obtained. The bird harm prevention tool attached to the overhead electric wire according to claim 1 or 2 configured to be elastically sealable.

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