JP2011024311A - Identification marking tool for electric wires - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an identification marking tool for electric wires that can be installed readily on an overhead wire. <P>SOLUTION: The marking tool 10 includes an identifying body 1 and a belt-like shape varying plate 2. The identifying body 1 includes a pair of gripping surfaces 11, 11 facing opposite directions. The shape varying plate 2 has its base part 21 fixed on the identifying body 1 and its tip part 22 extending to the outside. The shape varying plate 2 is elastic. The shape variation plate 2 can be alternately restored from an extended shape in which it is independent of the identifying body 1 and from a wound shape in which an overhead wire 1w is wound around. In the extended shape, the section of the shape variation plate 2 orthogonal to the direction of the length thereof has a predetermined warpage. In the wound shape, the warp in the shape varying plate 2 is corrected, and overhead wire 1w is wound in a spiral form along the direction of the length of the shape varying plate 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an identification marker for electric wires. In particular, the present invention relates to a structure of a marker that is attached to a three-phase, three-wire overhead line to distinguish the first to third phases of the overhead line from the difference in color.

  In electric power companies, etc., attach a marker that distinguishes the first phase (R phase), the second phase (S phase), and the third phase (T phase) of the three-phase three-wire according to the color to the high-voltage overhead wire. Prevents short circuits and ground faults due to miswiring.

  As such a marker, for example, an insulating clip made up of a pair of clamping pieces whose base end portions are coupled in an arc shape and whose front end portions face each other can be used. And the base end part of this clip can be elastically hold | maintained to an overhead wire by opening the front-end | tip part of a pair of clamping piece, and inserting in an overhead wire (for example, refer patent document 1).

  Moreover, as such a marker, a commercially available marker (clip) can also be used. FIG. 7 is a perspective view showing a configuration of a marker according to the prior art. Referring to FIG. 7, the marker 8 has a pair of curved arms 81 and 82 whose base ends are joined in an arc shape.

  Referring to FIG. 7, the pair of curved arms 81 and 82 have their base ends connected to each other so that their tip ends can be opened and closed. One curved arm 81 has a pair of branch arms 811 and 811 that branch toward the tip portion. The other curved arm 82 has a single arm 821 whose front end portion is positioned between the pair of branch arms 811 and 811 and can be advanced and retracted.

  Referring to FIG. 7, the pair of branch arms 811 and 811 and the single arm 821 are provided with a pair of curved surfaces 81a and 82a on their outer surfaces in opposite directions. When a force is applied so that the central portions of the pair of curved arms 81 and 82 are close to each other, the pair of branch arms 811 and 811 and the single arm 821 intersect to face the pair of curved surfaces 81a and 82a. it can.

  With reference to FIG. 7, the marker 8 is inserted into the overhead wire 1w while maintaining the open state in which the pair of curved surfaces 81a and 82a face each other. Next, when the pair of curved arms 81 and 82 are released, the curved arms 81 and 82 are elastically restored so that the outer periphery of the overhead wire 1w can be held between the pair of curved surfaces 81a and 82a.

  The marker 8 shown in FIG. 7 is made of a molded insulating synthetic resin, and is suspended by sandwiching the overhead wire 1w using the elastic force of the synthetic resin. The phase of the overhead wire 1w can be identified by the color coding of the marker 8.

JP 2008-263664 A

  There are two types of hot-line work that performs power distribution work for overhead power lines without power interruption: direct hot-wire method and indirect hot-wire method. In the direct hot wire construction method, workers wearing protective equipment such as high-pressure rubber gloves directly touch the live overhead wire for power distribution work. On the other hand, the indirect hot wire method can perform power distribution work by using a hot stick (insulating operation rod) or the like without directly touching an overhead wire being energized by an operator. In recent years, a shift from a direct hot wire method to an indirect hot wire method is progressing from the viewpoint of improving the working environment.

  The hot stick is equipped with a tool for power distribution work at the tip, and this tool can be remotely operated with a handy operation unit. An operator who performs power distribution work can safely attach the marker to the overhead wire using, for example, a hot stick provided with a gripping tool.

  However, the conventional marker 8 shown in FIG. 7 has a problem that it is difficult to maintain the gripped state because the gripping surface held by the gripping tool is curved in an arc shape.

  Referring to FIG. 7, the conventional signage 8 uses a hot stick to keep the pair of curved surfaces 81a and 82a facing each other while aiming at the overhead line 1w at a high place. There is a problem that it is difficult to insert the tool 8.

  Further, referring to FIG. 7, in the conventional marker 8, tensile stress is always applied to the pair of branch arms 811 and 811 and the single arm 821 in a state where the overhead wire 1 w is sandwiched. Therefore, there is also a problem that the pair of branch arms 811 and 811 and the single arm 821 are easily damaged over a long period of time.

  From the above, if an electric wire identification marker that can be easily attached to an overhead wire can be realized using a hot stick, it is safe, and the efficiency of attaching the electric wire identification marker is promoted. There is also a need for a durable wire identification marker. The above can be said to be the subject of the present invention.

  This invention is made | formed in view of such a subject, and it aims at providing the identification marker for electric wires which is easy to attach to an overhead wire and is durable.

  The present inventors configure an identification marker for electric wires by an identification body that can be easily grasped by a grasping tool provided on a hot stick, and a band-shaped shape change plate that can be self-supported from this identification body or wound on an overhead wire. As a result, it has been found that these problems can be solved, and based on this, the inventors have invented the following new wire identification marker.

  (1) An electric wire identification marker according to the present invention is an electric wire identification marker attached to at least an overhead wire, and has an identification body having a pair of flat grip surfaces facing in opposite directions, and a base end portion is the identification A band-shaped shape change plate that is fixed to the body and has elasticity that has a distal end portion extending outward, and the shape change plate has a predetermined warp in a cross section perpendicular to the longitudinal direction thereof. The self-supporting elongated shape and the winding shape in which the warp is corrected and the overhead wire is wound along the longitudinal direction of the shape change plate can be restored to each other.

  (2) It is preferable that the said shape change board winds the said overhead wire helically.

  (3) It is preferable that the shape change plates are arranged in a pair with a predetermined gap on both wings of the identification body, and the overhead wire is wound in a spiral shape.

  (4) It is preferable that the said shape change board has a metal plate and the insulating member which coat | covers this metal plate.

  (5) It is preferable that the said identification body and the said shape change board are colored with chromatic color.

  According to the present invention, the pair of gripping surfaces provided on the identification body can be easily gripped by the gripping tool provided on the hot stick. Further, according to the present invention, when the identifier is gripped with a hot stick and the shape change plate is impacted on the overhead wire, the warpage of the shape change plate is corrected and the overhead wire can be wound instantaneously.

  The electric wire identification marker according to the present invention can be easily attached to an overhead wire using a hot stick. In addition, the wire identification marker according to the present invention is safe if a hot stick is used, and the efficiency of the work of attaching the wire identification marker is promoted.

It is a perspective view which shows the structure of the identification marker for electric wires by one Embodiment of this invention. It is a figure which shows the structure of the identification marker for electric wires by the said embodiment, FIG. 2 (A) is a front view of the identification marker for electric wires, and FIG. 2 (B) is a right view of the identification marker for electric wires. is there. It is AA arrow sectional drawing of FIG. 2 (A). It is a perspective view of the hot stick holding the identification marker for electric wires by the said embodiment. It is a perspective view of the overhead wire which attaches the identification marker for electric wires by the said embodiment. It is a perspective view which shows the structure of the identification marker for electric wires by another embodiment of this invention. It is a perspective view which shows the structure of the marker by a prior art.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  Initially, the structure of the identification marker for electric wires by one Embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing a configuration of an electric wire identification marker according to an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the wire identification marker according to the embodiment, FIG. 2 (A) is a front view of the wire identification marker, and FIG. 2 (B) is a diagram of the wire identification marker. It is a right view. FIG. 3 is a cross-sectional view taken along the line AA in FIG.

  Referring to FIGS. 1 to 3, an electric wire identification marker (hereinafter abbreviated as a marker) 10 according to an embodiment of the present invention can be attached to an overhead wire 1w. The marker 10 includes an identification body 1 and a band-shaped shape change plate 2. The identification body 1 has a pair of flat grip surfaces 11 and 11 that face in opposite directions.

  Referring to FIGS. 1 to 3, the shape change plate 2 has a base end portion 21 fixed to the identification body 1 and a tip end portion 22 extending to the outside. The shape change plate 2 has elasticity.

  With reference to FIGS. 1 to 3, the shape change plate 2 can have an elongated shape in which a cross section perpendicular to the longitudinal direction has a predetermined warp and is independent from the identification body 1. Further, the shape change plate 2 can be formed into a winding shape in which the warp is corrected and the overhead wire 1 w is wound along the longitudinal direction of the shape change plate 2.

  Referring to FIGS. 1 to 3, the shape change plate 2 has a metal plate 2a such as spring steel and an insulating member 2b that covers the metal plate 2a. The identification body 1 has an annular metal plate 1a and an insulating member 1b that covers the metal plate 1a. The base end of the metal plate 2a is fixed to the outer periphery of the metal plate 1a by welding.

  Here, the marker according to the present invention is not limited to the embodiment shown in FIGS. 1 to 3. The identification body 1 and the shape change plate 2 may be integrally formed of an insulating synthetic resin. Alternatively, the identification body 1 and the shape change plate 2 may be bonded to each other after the identification body 1 and the shape change plate 2 are separately formed of an insulating synthetic resin.

  Referring to FIG. 1, when the elongated shape change plate 2 is impacted toward the outer periphery of the overhead wire 1w, the warp (see FIG. 3) of the shape change plate 2 is corrected, and the shape change plate 2 is Can be wound spirally.

  Next, the operation of the marker 10 according to the embodiment of the present invention will be described.

  FIG. 4 is a perspective view of a hot stick for gripping the electric wire identification marker according to the embodiment. FIG. 5 is a perspective view of an overhead wire to which the electric wire identification marker according to the embodiment is attached.

  The marker 10 according to the embodiment of the present invention can be attached to an overhead wire using the hot stick 9 shown in FIG. Referring to FIG. 4, a gripping tool 90 is attached to the tool portion 91 at the tip of the hot stick 9. The gripping tool 90 includes a pair of gripping pieces 9a and 9b that open and close. One grip piece 9a is a fixed piece with a base end portion fixed, and the other grip piece 9b is a movable piece whose base end portion is rotatably connected to one grip piece 9a.

  Referring to FIG. 4, the hot stick 9 holds the operating rod 9 c substantially parallel to the handle portion 93. And the front-end | tip part of the action | operation rod 9c is connected with the other holding piece 9b so that rotation is possible. On the other hand, the base end portion of the operating rod 9c is connected to the operation lever 9d.

  Referring to FIG. 4, when the operation lever 9 d is brought close to the operation unit 92, the pair of grip pieces 9 a and 9 b can be closed. When the operation lever 9d is separated from the operation portion 92, the pair of grip pieces 9a and 9b can be opened. As described above, the gripping tool 90 can reliably grip the gripping surfaces 11 and 11 of the marker 10 by operating the operation lever 9d (see FIG. 1).

  Referring to FIGS. 1 to 3, the shape change plate 2 is preliminarily molded so that it can be changed into an elongated shape and a wound shape. Referring to FIG. 3, the shape change plate 2 has a predetermined warp in which the cross section orthogonal to the longitudinal direction has an arc shape, and resists the force of winding the shape change plate 2 in the longitudinal direction.

  Referring to FIG. 3, when the warpage of the shape change plate 2 is corrected so as to be flat, it can be restored to a pre-shaped winding shape (see FIG. 1). On the other hand, when it is stretched so as to extend from the wound shape of the shape change plate 2 shown in FIG. 2 and 3).

  1 to 3, it is preferable that the shape change plate 2 impacts from the convex surface toward the outer periphery of the overhead wire 1w, and the warpage of the shape change plate 2 is corrected so that the shape change plate 2 is 1w can be spirally wound. That is, the marker 10 can be attached to the overhead wire 1w.

  Referring to FIGS. 1 to 3, the identification body 1 and the shape change plate 2 are colored with chromatic colors such as “red”, “blue”, and “yellow”. Therefore, the marker 10 is attached to the three-phase three-wire overhead wire 1w, and the first phase (R phase), the second phase (S phase), and the third phase (T phase) can be distinguished from each other by color (see FIG. 5).

  Compared with the conventional marker 8, the marker 10 according to the embodiment of the present invention can be easily attached to the overhead wire 1 w using the hot stick 9. Since the marker 10 according to the embodiment of the present invention is attached to the overhead wire 1w using the hot stick 9, it is safe, and the efficiency of the attaching operation of the electric wire identification marker is promoted.

  In addition, since the marker 10 according to the embodiment of the present invention uses the restoring force of the shape change plate 2, the internal stress hardly acts on the shape change plate 2 when the overhead wire 1 w is sandwiched. Therefore, there is an advantage that durability is excellent as compared with the conventional marker 8.

  The identification body 1 provided in the marker 10 according to the embodiment of the present invention is not limited to the illustrated hollow ellipsoid. The identification body 1 may be a solid ellipsoid or a rectangular parallelepiped, and may have a pair of flat gripping surfaces 11 and 11 that face in opposite directions, and is in a high place. However, it is preferable to have at least a bottom surface that is visible.

  In addition, the shape change plate 2 provided in the marker 10 according to the embodiment of the present invention is not necessarily limited to the winding shape wound spirally. The shape change plate 2 can include a winding shape wound in a spiral shape.

  Next, the configuration and operation of a wire identification marker according to another embodiment of the present invention will be described. FIG. 6 is a perspective view showing a configuration of an electric wire identification marker according to another embodiment of the present invention.

  Referring to FIG. 6, a marker 30 according to another embodiment of the present invention can be attached to the overhead wire 1w. The marker 30 includes an identification body 3 and a pair of band-shaped shape change plates 4 and 4. The identification body 3 has a pair of flat grip surfaces 31 and 31 that face in opposite directions.

  Referring to FIG. 6, the base plate 41 of the shape change plate 4 is fixed to the discriminator 3, and the tip 42 extends to the outside. In addition, the shape change plate 4 has elasticity. The pair of shape change plates 4, 4 are arranged with a predetermined gap on both wings of the identification body 3.

  Referring to FIG. 6, the shape change plate 4 may have an elongated shape in which a cross section orthogonal to the longitudinal direction has a predetermined warp and is self-supporting from the identification body 3. Further, the shape change plate 4 can be formed in a winding shape in which the warp is corrected and the overhead wire 1 w is wound along the longitudinal direction of the shape change plate 4.

  Referring to FIG. 6, the shape change plate 4 includes a metal plate 4a such as spring steel and an insulating member 4b that covers the metal plate 4a. The identification body 3 includes an annular metal plate 3a and an insulating member 3b that covers the metal plate 3a. The base end of the metal plate 4a is fixed to the outer periphery of the metal plate 3a by welding.

  Here, the marker 30 according to another embodiment of the present invention is not limited to the embodiment shown in FIG. The identification body 3 and the pair of shape change plates 4 and 4 may be integrally formed with an insulating synthetic resin. Alternatively, the identification body 3 and the pair of shape change plates 4 and 4 may be formed separately from each other with an insulating synthetic resin, and then the identification body 3 and the shape change plate 4 may be joined.

  Referring to FIG. 6, when a pair of elongated shape change plates 4, 4 is impacted toward the outer periphery of the overhead wire 1 w, the warpage of the pair of shape change plates 4, 4 is corrected, and the pair of shape change plates 4.・ 4 can wind the overhead wire 1w in a spiral shape. It is preferable that the shape change plate 4 winds the outer periphery of the overhead wire 1w to less than one turn.

  Referring to FIG. 6, a marker 30 according to another embodiment of the present invention can be attached to the overhead wire 1w using the hot stick 9 shown in FIG. The gripping tool 90 shown in FIG. 4 can securely grip the gripping surfaces 31 and 31 of the marker 30 by operating the operation lever 9d.

  Referring to FIG. 6, the shape changing plate 4 is preliminarily molded so that it can be changed into an elongated shape and a wound shape. The cross section perpendicular to the longitudinal direction of the shape change plate 4 has a predetermined curvature with an arc shape, and resists the force of winding the shape change plate 4 in the longitudinal direction.

  With reference to FIG. 6, if the warpage of the shape change plate 4 is corrected so as to be flat, it can be restored to a pre-shaped winding shape. On the other hand, when the shape change plate 4 is stretched so as to extend from the wound shape, and further corrected so that the shape change plate 4 is warped, it can be restored to a previously formed extended shape.

  Referring to FIG. 6, the pair of shape change plates 4, 4 preferably impacts from their convex surfaces toward the outer periphery of the overhead wire 1 w, and the warpage of the pair of shape change plates 4, 4 is corrected, The shape change plates 4 and 4 can wind the overhead wire 1w in a spiral shape. That is, the marker 30 can be attached to the overhead wire 1w.

  Referring to FIG. 6, the identification body 3 and the shape change plate 4 are colored with chromatic colors such as “red”, “blue”, and “yellow”. Therefore, the marker 30 is attached to the three-phase three-wire overhead line 1w, and the first phase (R phase), the second phase (S phase), and the third phase (T phase) can be identified by the difference in color.

  The marker 30 according to another embodiment of the present invention can be easily attached to the overhead wire 1w using the hot stick 9 as compared with the conventional marker 8. Since the marker 30 according to another embodiment of the present invention is attached to the overhead wire 1w using the hot stick 9, it is safe, and the efficiency of the work of attaching the wire identification marker is promoted.

  In addition, since the marker 30 according to another embodiment of the present invention uses the restoring force of the shape change plate 4, almost no internal stress acts on the shape change plate 4 in a state where the overhead wire 1w is sandwiched. Therefore, there is an advantage that durability is excellent as compared with the conventional marker 8.

  Furthermore, in the marker 30 according to another embodiment of the present invention, since the pair of shape change plates 4 and 4 are arranged with a predetermined gap between both wings of the identification body 3, one shape change plate 4 is provided. There is an advantage that the overhead wire 1w can be held by the other shape change plate 4 even if a failure occurs.

DESCRIPTION OF SYMBOLS 1 Identification body 1w Overhead wire 2 Shape change board 10 Marking tool (identification marking tool for electric wires)
11.11 A pair of gripping surfaces 21 Base end 22 Front end

Claims (5)

At least an identification marker for electric wires attached to an overhead wire,
An identifier having a pair of flat gripping surfaces facing in opposite directions;
A base-shaped portion is fixed to the discriminating body, and a tip-shaped portion has elasticity that extends outward, and includes a strip-shaped shape change plate,
The shape change plate has a predetermined warp in a cross section orthogonal to a longitudinal direction thereof, and an elongated shape that is self-supporting from the identification body, and the aerial shape along the longitudinal direction of the shape change plate after the warp is corrected. An identification marker for electric wires, which can mutually restore a winding shape for winding a wire.   The said shape change board is an identification marker for electric wires of Claim 1 which winds the said overhead wire helically.   The said shape change board is an identification marker for electric wires of Claim 1 arrange | positioned in a pair with a predetermined gap | interval in the both wing | blades of the said identification body, and winding the said overhead wire spirally.   The said shape change board is an identification marker for electric wires in any one of Claim 1 to 3 which has a metal plate and the insulating member which coat | covers this metal plate.   The electric wire identification marker according to any one of claims 1 to 4, wherein the identification body and the shape change plate are colored with a chromatic color.

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