JP2007174737A - Ground wire supporting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ground wire supporting tool for stabilizing a state of an aerial ground wire supported by an insulator provided at a utility pole. <P>SOLUTION: The ground wire supporting tool 1 is a supporting tool for fixing the aerial ground wire 2 to the insulator 3. The aerial ground wire 2 is an aluminum ground wire, and hung between the utility poles or steel towers in a bared state. The ground wire supporting tool 1 is formed from one metal bind wire 4. The metal bind wire 4 is formed from a clad mesh having a copper wire 5 covered with aluminum 6. The ground wire supporting tool 1 is formed in the middle of the metal bind wire 4 in the longitudinal direction, and has an insulator engaging section 7 hooked to a head 3a of the insulator 3, and spiral ground wire holding sections 8A, 8B formed on the both sides of the insulator engaging section 7 in the metal bind wire 4, wound onto and holding the wound aerial ground wire 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a ground wire support for fixing an aerial ground wire to an insulator attached to a utility pole, a steel tower or the like.

For example, overseas, an aerial earth wire made of aluminum or the like may be hung between utility poles or steel towers while being exposed. In this case, a bare ground wire is often fixed to an insulator attached to a utility pole or the like. Conventionally, as one method of fixing an aerial ground wire to an insulator, for example, an aluminum bind wire as described in Patent Document 1 is manually wound around the aerial ground wire.
Japanese Patent Laying-Open No. 2004-32901 (FIG. 5)

  However, the aluminum binding wire as in the above prior art is easily deformed and weak in strength. For this reason, even if such an aluminum bind wire is wound around an aerial ground wire, the binding force (holding force) of the ground wire cannot be sufficiently obtained by the bind wire, and the support state of the aerial ground wire with respect to the insulator is unstable. May be.

  An object of the present invention is to provide a ground wire support that can stabilize the support state of an aerial ground wire with respect to an insulator provided on a utility pole or the like.

  The present invention is a ground wire support that is formed of a metal binding wire and is used to fix an exposed aerial ground wire to an insulator, and an insulator engaging portion that wraps around the insulator, and both sides of the insulator engaging portion And a pair of ground wire holding portions that wrap and hold an aerial ground wire, and the metal binding wire is formed of a clad rope formed by covering a steel wire with the same metal material as the aerial ground wire. It is characterized by being.

  When fixing the bare ground wire to the insulator using such a ground wire support, first, the insulator engaging portion is wound around the insulator. Then, in a state where the aerial ground wire is disposed with respect to the insulator, one of the pair of ground wire holding portions is wound around the aerial ground wire in order from the lever engaging portion side, and then the other of the pair of ground wire holding portions is connected. Wrap it around an aerial ground wire in order from the insulator engaging part side.

  At this time, the metal binding wire which comprises a ground wire support tool is formed with the clad rope which covers a steel wire with the same metal material as an aerial ground wire. This metal binding wire is not easily deformed and has high strength compared to, for example, an aluminum metal binding wire. For this reason, in the state where the ground wire holding portion of the ground wire support made of such a metal binding wire is wound around the overhead ground wire, the holding power of the ground ground wire by the ground wire holding portion is increased, so that the ground ground against the insulator is increased. The support state of the wire is stabilized. In addition, by using the same metal as the overhead ground wire as the metal material that covers the steel wire, the potential difference between the overhead ground wire and the metal binding wire can be suppressed, so that the metal binding wire is less likely to corrode. Thereby, the fracture | rupture of a metal binding wire, etc. can be prevented.

  Preferably, the spiral winding directions of the pair of ground wire holding portions are opposite to each other. In this case, when the pair of ground wire holding portions are wound around the overhead ground wire after the lever engaging portion is wound around the lever, the overhead ground wire is connected to each of the lever engaging portions of the pair of ground wire holding portions. It can comprise so that it may pass through the upper side of a side edge part. In such a configuration, when one of the ground wire holding portions is wound around the aerial ground wire, the ground wire holding portion starts to be wound as it is from above the aerial ground wire, and the other ground wire holding portion is wound around the aerial ground wire. However, since it is only necessary to start winding the ground wire holding portion from the upper side of the overhead ground wire as it is, the winding operation of the ground wire holding portion around the overhead ground wire is facilitated. In addition, since the winding method of the pair of ground wire holding portions is exactly the same as described above, in the state where the pair of ground wire holding portions are wound around the overhead ground wire, the overhead ground wire is horizontal to the insulator. It becomes easy to become. Therefore, the support state of the aerial ground wire with respect to the insulator is further stabilized.

  Preferably, the helical winding pitch on the side of the lever engaging portion in the ground wire holding portion is shorter than the helical winding pitch on the side opposite to the lever engaging portion in the ground wire holding portion. By increasing the spiral winding pitch on the side opposite to the lever engaging portion in the ground wire holding portion, the portion on the side opposite to the lever engaging portion in the ground wire holding portion (the terminal side of the ground wire support) is against the aerial ground wire. The number of windings of the ground wire holding part is reduced. Thereby, although the part which should wind the ground wire holding part becomes short, so that it goes to the terminal side of a ground wire support tool, the winding operation | work of a ground wire holding part can be performed easily. In addition, by shortening the helical winding pitch on the side of the lever engaging portion in the ground wire holding portion, the number of times of winding of the ground wire holding portion around the overhead ground wire is increased in the portion on the side of the lever engaging portion of the ground wire holding portion. For this reason, the holding power of the aerial ground wire by the ground wire holding portion is sufficiently secured.

  Moreover, the helical winding pitch on the side of the lever engaging portion in the ground wire holding portion may be longer than the helical winding pitch on the side opposite to the lever engaging portion in the ground wire holding portion. By increasing the helical winding pitch on the lever engaging portion side in the ground wire holding portion, the number of times of winding of the ground wire holding portion around the overhead ground wire is reduced in the portion on the lever engaging portion side of the ground wire holding portion. Thereby, even if there is a tree or the like in the vicinity of the insulator, the influence on the winding work of the ground wire holding portion can be reduced. In addition, by shortening the spiral winding pitch on the side opposite to the lever engaging portion in the ground wire holding portion, a portion of the ground wire holding portion opposite to the lever engaging portion (terminal side of the ground wire support) has an aerial ground. Since the number of windings of the ground wire holding portion around the wire increases, the holding power of the aerial ground wire by the ground wire holding portion is sufficiently secured.

  Further, preferably, the aerial ground wire is formed of aluminum, and the metal binding wire is a clad rope formed by covering a steel wire with aluminum. For example, in foreign countries, aluminum ground wires are often used as bare ground wires between utility poles and steel towers. Therefore, clad rope made of steel covered with aluminum is used as metal binding wire. It is preferable to use as.

  ADVANTAGE OF THE INVENTION According to this invention, the support state of the aerial ground wire with respect to the insulator provided in the utility pole etc. can be stabilized. As a result, even if a ground wire support having a simple structure consisting only of metal binding wires is used, the bare ground wire can be securely held on the utility pole or the like.

  Hereinafter, a preferred embodiment of a ground wire support according to the present invention will be described in detail with reference to the drawings.

  First, a first embodiment of a ground wire support according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a ground wire support of the present embodiment, and FIG. 2 is a perspective view showing a use state of the ground wire support shown in FIG.

  In each figure, the ground wire support 1 is a support for fixing the aerial ground wire 2 to the insulator 3. The aerial ground wire 2 is an aluminum ground wire, for example, and is stretched between utility poles or steel towers in a bare state, that is, a bare wire. The insulator 3 is an insulator attached to a utility pole, a steel tower, etc. in order to insulate an overhead electric wire (not shown).

The ground wire support 1 is formed by a single metal binding wire 4. As shown in FIG. 3, the metal binding wire 4 is formed of a clad rope formed by covering a steel wire 5 such as a galvanized steel wire with an aluminum 6. As a characteristic of the metal binding wire 4 having such a structure, the tensile strength and the elastic force are high as compared with the metal binding wire made of only aluminum. Diameter _{D 1} of the steel wire 5, for example, about 1.95～4.95Mm, diameter _{D 2} of the metal binding wire 4 is, for example, about 2.0 to 5.0 mm.

  The ground wire support 1 is formed at the center portion in the longitudinal direction of the metal binding wire 4, and on both sides of the lever engaging portion 7 that wraps around the neck portion 3 a of the lever 3, and the lever engaging portion 7 on the metal binding wire 4. Helical ground wire holding portions 8A and 8B that are formed and hold the imaginary ground wire 2 in a wound manner. The lever engaging portion 7 has a semicircular arc shape having a diameter corresponding to the neck portion 3 a of the lever 3.

  The ground wire holding portions 8 </ b> A and 8 </ b> B have an inner diameter smaller than the wire diameter of the aerial ground wire 2. Thereby, when the ground wire holding portions 8A and 8B are wound around the overhead ground wire 2, the ground ground wire 2 is securely held by the ground wire holding portions 8A and 8B. The spiral winding directions of the ground wire holding portions 8A and 8B are the same. Further, the spiral winding pitch P of the ground wire holding portions 8A and 8B is generally equal.

  When the aerial ground wire 2 is fixed to the insulator 3 using such an earth wire support 1, the insulator engaging portion 7 is first wound around the neck portion 3a of the insulator 3 as shown in FIG. . Then, in the state where the aerial ground wire 2 is arranged on the side of the neck 3a of the insulator 3 opposite to the side around which the insulator engaging portion 7 is wound, as shown in FIG. The ground wire 2 is wound around by hand, and then the other ground wire holding portion 8B is wound around the aerial ground wire 2 by hand.

  Specifically, the ground wire holding portion 8A is sequentially moved from the lever engaging portion 7 side (the center side of the ground wire support 1) toward the opposite side of the lever engaging portion 7 (the terminal side of the ground wire support 1). Wrap around the imaginary earth wire 2. At this time, the aerial ground wire 2 passes under the metal binding wire 4 at the boundary between the lever engaging portion 7 and the ground wire holding portion 8A. For this reason, when the ground wire holding portion 8A is wound around the overhead ground wire 2, it is necessary to wind the ground wire holding portion 8A after passing the ground wire holding portion 8A below the overhead ground wire 2.

  Next, the ground wire holding portion 8B is wound around the aerial ground wire 2 in order from the center side of the ground wire support 1 toward the terminal side. At this time, since the spiral winding directions of the ground wire holding portions 8A and 8B are the same, at the boundary between the lever engaging portion 7 and the ground wire holding portion 8B, the lever engaging portion 7 and the ground wire holding portion 8A are Unlike the boundary, the aerial ground wire 2 passes over the metal binding wire 4. For this reason, when the ground wire holding portion 8B is wound around the aerial ground wire 2, it is only necessary to start winding the ground wire holding portion 8B as it is from above the aerial ground wire 2.

  As described above, as shown in FIG. 2, the aerial ground wire 2 is supported by the insulator 3 via the ground wire support 1.

  Here, since the metal binding wire 4 which comprises the earth wire support 1 is formed with the clad rope which covers the steel wire 5 with the aluminum 6, it is hard to deform | transform and has high intensity | strength. For this reason, in a state where the overhead ground wire 2 is supported by the insulator 3 by the ground wire support 1, the ground wire holding portions 8A and 8B hold (hold) the overhead ground wire 2 with sufficient force (load). Therefore, the support state of the imaginary earth wire 2 with respect to the insulator 3 is stabilized. Thereby, for example, even when a slightly strong wind blows, the aerial ground wire 2 can be reliably retained on a utility pole, a steel tower, or the like.

  Moreover, since the elastic force and strength of the metal binding wire 4 are relatively high as described above, the winding work of the ground wire holding portions 8A and 8B around the aerial ground wire 2 can be easily and stably performed without using a tool or the like. It can be carried out. In particular, the above-described work for fixing the aerial ground wire 2 to the insulator 3 is often performed at a high place such as a utility pole or a steel tower. Therefore, the ground wire support 1 made of the metal binding wire 4 is used. This is very advantageous for the operator.

  Further, if the metal material covering the steel wire in the metal binding wire is different from the metal material forming the overhead ground wire 2, a potential difference is generated between the metal binding wire and the overhead ground wire 2, so that the metal binding wire is rusted. It becomes easy, and in the worst case, it breaks the metal binding wire. On the other hand, the metal binding wire 4 constituting the ground wire support 1 has a structure in which the steel wire 5 is covered with the same aluminum as the metal forming the aerial ground wire 2. For this reason, since the metal binding wire 4 becomes difficult to rust, the metal binding wire 4 can be prevented from being broken by corrosion of the metal binding wire 4.

  A second embodiment of the ground wire support according to the present invention will be described with reference to FIGS. In the figure, members that are the same as or equivalent to those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

  FIG. 6 is a perspective view showing the ground wire support of the present embodiment. In the figure, the ground wire support 10 is formed of a metal binding wire 4 as in the first embodiment. The length (full length) of the ground wire support 10 is equivalent to the ground wire support 1 in the first embodiment.

  The ground wire support 10 has ground wire holding portions 11A and 11B instead of the ground wire holding portions 8A and 8B in the first embodiment. Unlike the first embodiment, the spiral winding directions of the ground wire holding portions 11A and 11B are opposite to each other. Further, the spiral winding pitch of the ground wire holding portions 11A and 11B is generally equal as in the first embodiment.

  When the aerial ground wire 2 is fixed to the insulator 3 with such a ground wire support 10, the same technique as in the first embodiment is used. That is, as shown in FIG. 7, after the lever engaging portion 7 is wound around the neck portion 3a of the lever 3, the ground wire holding portion 11A is connected to the overhead ground wire in a state where the ground wire 2 is disposed around the neck portion 3a. 2 and the ground wire holding portion 11B is wound around the aerial ground wire 2. At this time, similarly to the first embodiment, the ground wire holding portions 11A and 11B are wound around the aerial ground wire 2 in order from the center side of the ground wire support 10 toward the terminal side.

  Here, in the ground wire support 10 of this embodiment, since the spiral winding directions of the ground wire holding portions 11A and 11B are reversed, the lever engaging portion 7 is connected to the neck portion 3a of the lever 3 as shown in FIG. In the state of being wound around, the aerial ground wire 2 is metal-bound at both the boundary between the lever engaging portion 7 and the ground wire holding portion 11A and the boundary between the lever engaging portion 7 and the ground wire holding portion 11B. You will pass over line 4. Therefore, when winding the ground wire holding portion 11A around the aerial ground wire 2, the ground wire holding portion 11A starts to be wound as it is from above the overhead ground wire 2, and then when winding the ground wire holding portion 11B around the overhead ground wire 2, The ground wire holding part 11 </ b> B may also start to be wound as it is from above the imaginary ground wire 2. Thereby, the winding operation | work of earth wire holding | maintenance part 11A, 11B with respect to the aerial earth wire 2 can be performed easily.

  In addition, since the method of winding the ground wire holding portions A and B around the aerial ground wire 2 is exactly the same, in the state where the ground wire holding portions A and B are wound around the aerial ground wire 2, the aerial ground wire 2 Is almost horizontal to the insulator 3. Thereby, the support state of the aerial ground wire 2 and the insulator 3 is further stabilized. Further, for example, the operator does not have to bend and correct the aerial ground wire 2 by force so that the aerial ground wire 2 is horizontal with respect to the insulator 3. Therefore, the burden on the operator can be reduced. .

  A third embodiment of the ground wire support according to the present invention will be described with reference to FIGS. In the figure, members that are the same as or equivalent to those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

  FIG. 8 is a perspective view showing the ground wire support of the present embodiment. In the figure, the ground wire support 20 is a support formed by the metal binding wire 4 as in the first embodiment, and has the same overall length as the ground wire support 1 described above.

  The ground wire support 20 has ground wire holding portions 21A and 21B instead of the ground wire holding portions 8A and 8B in the first embodiment. The ground wire holding portions 21 </ b> A and 21 </ b> B have an inner diameter smaller than the wire diameter of the aerial ground wire 2. The spiral winding directions of the ground wire holding portions 21A and 21B are opposite to each other as in the second embodiment. In addition, the helical winding pitch on the side of the lever engaging portion 7 (center side of the ground wire support 20) in the ground wire holding portions 21A and 21B is the opposite side of the lever engaging portion 7 in the ground wire holding portions 21A and 21B (grounding). It is shorter than the spiral winding pitch on the terminal side of the wire support 20.

  When the aerial ground wire 2 is fixed to the insulator 3 with such a ground wire support tool 20, the same technique as in the first embodiment is used. That is, as shown in FIG. 9, after the lever engaging portion 7 is wrapped around the neck portion 3a of the lever 3, the ground wire holding portion 21A is connected to the overhead ground wire in a state in which the overhead ground wire 2 is arranged around the neck portion 3a. 2 and the ground wire holding portion 21B is wound around the aerial ground wire 2.

  At this time, similarly to the first embodiment, the ground wire holding portions 21A and 21B are wound around the aerial ground wire 2 in order from the center side of the ground wire support 20 toward the terminal side. However, when winding the end-side portion of the ground wire support 20 in the ground wire holding portions 21A and 21B, the ground wire holding portions 21A and 21B are grounded more than when winding the central portion of the ground wire support 20 in the ground wire holding portions 21A and 21B. Since the length to which the wire holding portions 21A and 21B are to be wound is shortened, a large force is required for the operator. For this reason, depending on the dimensions of the metal binding wire 4 and the like, it may be difficult to wrap the ground wire holding portions 21A and 21B around the aerial ground wire 2 on the terminal side of the ground wire support 20.

  In the ground wire support 20 of this embodiment, since the spiral winding pitch on the terminal side of the ground wire support 20 in the ground wire holding portions 21A and 21B is large, the ground wire is held on the terminal side of the ground wire support 20. The number of times of winding the portions 21A and 21B around the imaginary ground wire 2 can be reduced. Thereby, the winding operation | work of earth wire holding | maintenance part 21A, 21B with respect to the aerial earth wire 2 can be performed still more easily.

  Further, the spiral winding pitch on the center side of the ground wire support 20 in the ground wire holding portions 21A and 21B is reduced by the amount corresponding to the increase in the spiral winding pitch on the terminal side of the ground wire support 20 in the ground wire holding portions 21A and 21B. Therefore, the number of times the ground wire holding portions 21A and 21B are wound around the aerial ground wire 2 on the center side of the ground wire support 20 is increased. For this reason, the holding force of the aerial ground wire 2 by the ground wire holding portions 21A and 21B is sufficiently secured. Therefore, on the center side of the ground wire support 20, the fit feeling of the ground wire holding portions 21 </ b> A and 21 </ b> B with respect to the overhead ground wire 2 is improved.

  A ground wire support according to a fourth embodiment of the present invention will be described with reference to FIGS. In the figure, members that are the same as or equivalent to those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

  FIG. 10 is a perspective view showing the ground wire support of the present embodiment. In the figure, a ground wire support 30 is a support formed by the metal binding wire 4 as in the first embodiment, and has the same overall length as the ground wire support 1 described above.

  The ground wire support 30 includes ground wire holding portions 31A and 31B instead of the ground wire holding portions 8A and 8B in the first embodiment. The ground wire holding portions 31 </ b> A and 31 </ b> B have an inner diameter smaller than the wire diameter of the aerial ground wire 2. The spiral winding directions of the ground wire holding portions 31A and 31B are opposite to each other as in the second embodiment. Further, the helical winding pitch of the ground wire holding portions 31A and 31B on the side opposite to the lever engaging portion 7 (the terminal side of the ground wire support 30) is the lever engaging portion 7 side (grounding side) of the ground wire holding portions 31A and 31B. It is smaller than the spiral winding pitch on the center side of the wire support 30.

  When the aerial ground wire 2 is fixed to the insulator 3 with such a ground wire support 30, the same technique as in the first embodiment is used. That is, as shown in FIG. 11, after the lever engaging portion 7 is wound around the neck portion 3a of the lever 3, the ground wire holding portion 31A is connected to the aerial ground wire in a state where the aerial ground wire 2 is disposed around the neck portion 3a. 2 and the ground wire holding part 31B is wound around the aerial ground wire 2.

  Here, when there is an obstacle such as a tree in the vicinity of the insulator 3, it is difficult to wrap the ground wire holding portions 31 </ b> A and 31 </ b> B around the overhead ground wire 2 on the center side of the ground wire support 30. It becomes a thing.

  In the ground wire support 30 of the present embodiment, since the spiral winding pitch on the center side of the ground wire support 30 in the ground wire holding portions 31 </ b> A and 31 </ b> B is large, the ground wire is held on the center side of the ground wire support 30. The number of times the portions 31A and 31B are wound around the imaginary ground wire 2 can be reduced. Thereby, even if there is an obstacle in the vicinity of the insulator 3, the ground wire holding portions 31 </ b> A and 31 </ b> B can be easily and reliably wound around the overhead ground wire 2.

  Further, the spiral winding pitch on the terminal side of the ground wire support 30 in the ground wire holding portions 31A and 31B is reduced by the amount corresponding to the increase in the spiral winding pitch on the center side of the ground wire support 30 in the ground wire holding portions 31A and 31B. Therefore, the number of times of winding the ground wire holding portions 31A and 31B on the terminal side of the ground wire support 30 increases. For this reason, the holding force of the aerial ground wire 2 by the ground wire holding portions 31A and 31B is sufficiently secured. Accordingly, on the terminal side of the ground wire support 30, the fit feeling of the ground wire holding portions 31 </ b> A and 31 </ b> B with respect to the aerial ground wire 2 becomes good.

  The present invention is not limited to the above embodiment. For example, as a mode in which the spiral winding pitch of the ground wire holding portion on the center side of the ground wire support is different from the spiral winding pitch of the ground wire holding portion on the terminal side of the ground wire support, the third winding described above is particularly used. And it is not restricted to the thing of 4th Embodiment. For example, when the total length of the ground wire support is large, a long spiral winding pitch region, a short spiral winding pitch region, and a long spiral winding pitch region are formed in this order from the center side of the ground wire support to the terminal side. You may do it. When such a ground wire support is used, the advantages of the third and fourth embodiments can be obtained at the same time.

  When the spiral winding pitch of the ground wire holding portion on the center side of the ground wire support and the spiral winding pitch of the ground wire holding portion on the terminal side of the ground wire support are different from each other, The spiral winding direction of the ground wire holding part may be the same direction.

  Furthermore, in the above embodiment, since the aerial ground wire 2 is made of aluminum, the metal binding wire 4 formed of the clad rope in which the steel wire 5 is covered with the aluminum 6 is used, but as the metal binding wire, A steel wire (including stainless steel, titanium, etc.) made of clad rope formed by covering the same metal material as the aerial earth wire (copper or the like in addition to aluminum) may be used.

1 is a perspective view showing a first embodiment of a ground wire support according to the present invention. It is a perspective view which shows the state which fixed the aerial earth wire to the insulator with the earth wire support tool shown in FIG. It is sectional drawing of the metal binder wire which comprises the earth wire support tool shown in FIG. It is a perspective view which shows the procedure which fixes an aerial earth wire to an insulator with the earth wire support tool shown in FIG. It is a perspective view which shows the procedure which fixes an aerial earth wire to an insulator with the earth wire support tool shown in FIG. It is a perspective view which shows 2nd Embodiment of the earth wire support tool which concerns on this invention. It is a perspective view which shows the state which fixed the aerial earth wire to the insulator with the earth wire support tool shown in FIG. It is a perspective view which shows 3rd Embodiment of the earth wire support tool which concerns on this invention. It is a perspective view which shows the state which fixed the aerial earth wire to the insulator with the earth wire support tool shown in FIG. It is a perspective view which shows 4th Embodiment of the earth wire support tool which concerns on this invention. It is a perspective view which shows the state which fixed the aerial earth wire to the insulator with the earth wire support tool shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Ground wire support tool, 2 ... Fictional earth wire, 3 ... Insulator, 4 ... Metal binding wire, 5 ... Leash wire, 6 ... Aluminum, 7 ... Insulator engagement part, 8A, 8B ... Ground wire holding part, 10 ... Ground wire support, 11A, 11B ... ground wire holding portion, 20 ... ground wire support, 21A, 21B ... ground wire holding portion, 30 ... ground wire support, 31A, 31B ... ground wire holding portion.

Claims (5)

A ground wire support that is formed of a metal binding wire and is used to fix the bare ground wire to the insulator,
An insulator engaging portion wound around the insulator;
A pair of ground wire holding portions that are spirally formed on both sides of the lever engaging portion and wind and hold the aerial ground wire;
The metal wire is formed of a clad rope formed by covering a steel wire with the same metal material as the aerial ground wire.   The ground wire support according to claim 1, wherein the spiral winding directions of the pair of ground wire holding portions are opposite to each other.   The helical winding pitch on the side of the lever engaging portion in the ground wire holding portion is shorter than the helical winding pitch on the side opposite to the lever engaging portion in the ground wire holding portion. Earth wire support.   The helical winding pitch on the side of the lever engaging portion in the ground wire holding portion is longer than the helical winding pitch on the side opposite to the lever engaging portion in the ground wire holding portion. Earth wire support. The aerial ground wire is formed of aluminum;
The ground wire support according to any one of claims 1 to 4, wherein the metal binding wire is a clad rope formed by covering a steel wire with aluminum.

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