JP6069007B2 - Dripping prevention tool for broken distribution lines - Google Patents

Description

  In the present invention, when a distribution line on a pole distribution line breaks, the end of the broken distribution line is prevented from sagging, and the possibility of breakage of a distribution line connection part for connecting the distribution line and the distribution line, etc. The present invention relates to a drooping prevention tool for a broken distribution line to be attached to a certain distribution line.

In a distribution line with multiple insulated distribution lines stretched over a power pole via an insulation support insulator, if the distribution line breaks, the distribution line may sag, causing electric shock damage due to the suspended line. It is necessary to prevent sagging.
Distribution lines may be blown by lightning strikes, broken due to strong winds, snowfall, or other unforeseen accidents, or water may enter the distribution line connections and cause stress corrosion cracking.
Since there are many breaks due to lightning fusing, strong winds, snowfall, and other unforeseen accidents caused by lightning strikes, they often occur in the vicinity of utility poles. This is done by installing equipment that prevents drooping. However, since the stress corrosion cracking breakage or the like generated at the wire connecting portion connecting the wires is generated between the utility poles, there is no support such as a utility pole or a support arm installed on the utility pole.

  Therefore, in Japanese Patent Application Laid-Open No. 2002-281649 (“Aerial Distribution Line”: Patent Document 1), the distribution line drooping prevention wire is wound in a spiral shape on the outer periphery of the entire distribution line installed on the utility pole. Fix both ends to a support such as a power pole, and hold the broken part of the overhead insulated wire with the wire drop prevention wire near the broken part, regardless of where the overhead insulated wire breaks at any part of the total length of the line. What prevents the aerial insulated wire from falling onto the ground or the like is disclosed.

  Further, in Japanese Patent Laid-Open No. 2006-191773 (“Distribution prevention device for distribution lines”: Patent Document 2), two distribution lines installed so as to be opposed to each other with a power pole installed at a predetermined distance are provided. When one of the distribution lines breaks, the distribution line prevents the falling end of the distribution line from falling to the ground by holding the broken distribution line connected to the other distribution line. An apparatus for preventing fall is disclosed.

However, since the invention of Patent Document 1 wraps the wire drop prevention wire material on the outer periphery thereof over the substantially entire length of the overhead insulated wire, the wire drop prevention device is provided on the outer periphery of the overhead insulation wire over almost the entire length. Wires must be wound, which is difficult and expensive. Moreover, when a breakage occurs in the electric wire connecting portion or the like, the wire dropping prevention wire is wound over the entire length, so that a great deal of labor is required for the restoration work. Furthermore, since the wire drop prevention wire is wound, there is a problem that it is difficult to visually find a broken portion of the distribution line.
Moreover, the fall prevention device for distribution lines of Patent Document 2 has a large impact load acting on the other distribution line when one distribution line breaks, and there is a risk of scuffing the insulation coating portion of the distribution line that has not been broken. Further, the structure of the connecting portion of the distribution line drop prevention device for fixing to the distribution line includes a support portion and a holding portion, and the distribution line is provided between the holding surface of the support portion and the holding surface of the holding portion. And tightening with eyebolts and nuts. If the force to hold the distribution line is increased, the insulation coating of the distribution line will be brazed and water will enter and cause stress corrosion cracking breakage. If the force to be weakened is weak, it cannot withstand the tensile load applied at the time of breakage, and there is a problem that the sag of the distribution line cannot be prevented sufficiently.

JP 2002-281649 A JP 2006-191773 A

  The present invention was created in view of the conventional problems as described above, and in a distribution line of a pole-mounted distribution line, there is a possibility of breakage, for example, a distribution line connection for connecting the distribution line and the distribution line. Of the separation distance regulating member for restricting the separation distance between the breaking portions to be fixed at a certain interval by fixing one end portion of the distribution wire and the other end portion that were cut at the time of breaking the distribution wire to the portion Attach both ends to the distribution line with two clamps that fix to the distribution line, and keep the distribution line tightened and gripped to the extent that the outer surface that is the insulation coating part of the distribution line does not have deep wrinkles with the clamp, Force to clamp the clamp to the outer surface of the distribution line at the time of breakage, and force to pull out the distribution line from the clamp for distribution line holding the clamp distribution line due to the impact load at the time of breakage Minutes Thus, when the breakage occurs, the distribution line is surely stopped, the distribution line is prevented from drooping, and further, the distribution line drooping prevention tool that makes it easy to understand visually from the position where the breakage position is separated is provided. For the purpose.

(1) A tool for preventing dripping of a broken distribution line, which is attached to a distribution line having a possibility of breakage, and prevents the distribution line from drooping when broken.
The drooping prevention tool has a predetermined length, and a separation distance regulating member for regulating the separation distance between the fractured portions when the distribution line is broken, and 2 for fixing both ends of the separation distance regulating member to the distribution line. With two clamps,
The separation distance regulating member includes a gripping member having a wedge-shaped portion sandwiched between the clamps and bulging toward an end side of the separation distance regulating member at both ends, and the clamps face each other. A clamping part for clamping the distribution line, the clamping part for clamping the distribution line formed between the two clamping plates, and a clamping member for fastening the two clamping plates; A separation distance regulating member clamping portion for sandwiching the cylindrical body having the wedge-shaped portion;
The gripping member including the wedge-shaped portion moves in the separation distance regulating member clamp portion by a traction force applied to the separation distance regulating member due to separation of the distribution line when the distribution line is broken. As the part moves, the two clamping plates constituting the clamps are slightly forcibly opened on the separation distance regulating member clamping part side, and the distribution line clamping clamp part side is slightly forcibly closed. A breakage distribution line drooping prevention tool characterized by:

(2) The gripping member having the wedge-shaped portion includes an identical outer diameter portion extending at substantially the same outer diameter, and a tapered enlarged diameter portion that is continuous with the same outer diameter portion and forms the wedge-shaped portion. The tool for preventing drooping of a distribution line according to the above (1), comprising a gripping portion.
(3) The separation distance regulating member clamp portion of the clamp has a wedge portion sandwiching portion configured by opposing concave portions for sandwiching a part or the whole of the wedge-shaped portion, and the wedge portion sandwiching portion is The drooping prevention tool of the broken distribution line according to (1) or (2), wherein the diameter is increased toward the end.
(4) The gripping member having the wedge-shaped portion includes an identical outer diameter portion extending at substantially the same outer diameter, and a tapered enlarged diameter portion that is continuous with the same outer diameter portion and forms the wedge-shaped portion. The clamping portion includes a gripping part, and the clamp portion of the separation distance regulating member includes the same outer diameter portion sandwiching portion formed by opposing concave portions for sandwiching a part or the whole of the same outer diameter portion, and the wedge (1) thru | or (3) which has the wedge part clamping part comprised by the recessed part which opposes to clamp a part or whole of a shape part, and the said wedge part clamping part is diameter-expanded toward an edge part. ) The drooping prevention tool for the broken distribution line according to any one of the above.

(5) The distribution line clamping clamp part has an edge part that can bite into the outer surface of the distribution line when the distribution line clamping part side is shifted in a slightly closing direction. ) The drooping prevention tool for the broken distribution line according to any one of the above.
(6) The gripping member having the wedge-shaped portion is made of metal and has a taper shape that is continuous with the same outer diameter portion that extends at substantially the same outer diameter and forms the wedge-shaped portion. A gripping portion having an enlarged diameter portion, and a caulking fixing portion extending from the gripping member and having a separation distance restriction member insertion hole therein, wherein the separation distance restriction member is the separation distance restriction member insertion hole. The breakage distribution wire droop prevention tool according to any one of (1) to (5), wherein the breakage distribution wire is inserted into the caulking fixing portion and fixed to the caulking fixing portion.
(7) The wedge-shaped portion has a tapered diameter, and the clamping plate of the clamp has a concave portion that corresponds to the tapered shape of the wedge-shaped portion and is formed by dividing the truncated cone column into two parts. The drooping prevention tool of the broken distribution line in any one of said (1) thru | or (6).

(8) The clamp part for clamping the distribution line of the clamp has a distribution line clamping part constituted by a concave part facing each other for clamping the distribution line, and the distribution line clamping part is provided for preventing slippage on the inner surface. The drooping prevention tool of the broken distribution line in any one of said (1) thru | or (7) provided with the protruding item | line.
(9) Each of the clamping plates has a through hole provided in a central portion, and the fastening member includes a tightening bolt that is inserted into the through hole, and a nut that is screwed to the tightening bolt. 1) The drooping prevention tool of the broken distribution line in any one of (8).
(10) The gripping member having the wedge-shaped portion has a separation distance restriction member insertion hole, and the separation distance restriction member insertion hole penetrates from one end to the other end of the grasping member (1 ) To (9) A breakage prevention tool for a broken distribution line.

(11) The breakage distribution wire droop preventer according to any one of (1) to (10), wherein the separation distance regulating member can be wound around the distribution wire.
(12) The tool for preventing drooping of a broken distribution line according to any one of (1) to (11), wherein the separation distance regulating member is a resin rope-shaped member having an aramid fiber as a core material.
(13) The clamp according to any one of (1) to (12), wherein the clamp includes a clamp waterproof cover.
(14) The breakable distribution line droop preventer according to any one of (1) to (13), wherein the breakable distribution line is a distribution line having a distribution line connection portion.

  In the breakage distribution line droop prevention device of the present invention, when the distribution line is broken, a pulling force of the distribution line causes a strong traction force to act on the separation distance regulating member attached to the distribution line with a clamp, and the separation distance regulation A gripping member having a wedge-shaped portion of a member moves in the separation distance regulating member clamp portion, and the separation distance regulating member clamp portion of the two clamping plates constituting the clamp is moved by the movement of the wedge-shaped portion. The side will be slightly forcibly opened, and the distribution wire clamping clamp side will be forced to close slightly, and during normal times, the clamp will have a deep ridge on the outer surface that is the insulation coating part of the distribution line The distribution line can be held tightly and gripped as much as possible, and the clamp can be gripped so strongly that it breaks into the outer surface of the distribution line when broken.

Accordingly, since the distribution line is strongly gripped at the time of breakage, the broken distribution line can be securely held without being displaced or coming out of the distribution line clamping clamp portion where the distribution line is held. .
In addition, during normal times, the clamp does not need to be pinched strongly enough to bite into the outer surface of the distribution line, so that the outer surface of the distribution line is not deeply damaged, and water enters the distribution line from the clamp mounting part and stress corrosion occurs. It can be prevented from causing cracks.
Further, the one end of the distribution line broken by the function of the separation distance regulating member and the other end of the distribution line can be connected, and the separation distance between the broken portions can be regulated to be kept constant, and Since the angle of the clamp attached to the distribution line changes with respect to the installed distribution line, the force to pull out the distribution line from the distribution line clamping clamp portion of the clamp is dispersed and the impact when the breakage occurs Even when a load is applied, the distribution line clamping clamp portion that sandwiches the distribution line can securely grip the distribution line, stop the distribution line, and prevent the distribution line from drooping.
In addition, it is possible to attach to both sides of the distribution line connecting part etc. where there is a possibility of breakage of the distribution line laid between the utility poles by the clamp, so breakage occurs at a position away from the utility pole Even so, it is possible to prevent the distribution line from drooping, and the breakage position of the distribution line can be easily seen from a position away from the distribution line.

  In the drooping prevention tool for a distribution line according to the present invention, the gripping member having the wedge-shaped portion includes a gripping portion including the same outer diameter portion and a tapered enlarged diameter portion forming the wedge-shaped portion, and The clamp portion of the clamp has a wedge portion clamping portion, and is configured to clamp the gripping portion. Therefore, when the separation distance regulating member is pulled, the wedge portion The wedge-shaped portion of the gripping member protrudes from the clamping portion, and the tapered diameter-enlarged portion of the wedge-shaped portion surely expands the separation distance regulating member clamp portion of the two clamping plates of the clamp. Thus, the separation distance regulating member clamp part side is forcibly pushed open, and as a result, the distribution line clamping clamp part is shifted to the direction of forcibly closing and the distribution line can be strongly gripped.

  Since the distribution wire droop prevention device of the present invention has an edge portion in the distribution wire clamping clamp portion, the edge on the outer surface of the distribution wire is shifted when the distribution wire clamping clamp portion side is slightly closed. It is possible to retain the distribution line that has been bitten and broken reliably, and to prevent the distribution line from being clamped out.

  According to the distribution wire droop prevention device of the present invention, the gripping member having the wedge-shaped portion and the caulking fixing portion are integrally molded, and the separation distance restriction member insertion hole is provided therein. By inserting a member into the separation distance regulating member insertion hole and fixing by caulking at the caulking fixing portion, a gripping member can be firmly attached to the separation distance regulating member, and an impact load is applied when the distribution line is broken. The wedge-shaped portion can move integrally with the separation distance regulating member even when strongly pulled.

Since the drooping prevention tool of the distribution line according to the present invention includes an anti-slip protrusion on the inner surface of the distribution line clamping part of the distribution line clamping clamp part, even if an impact load is applied at the time of breakage,
The distribution line clamped by the distribution line clamping clamp portion does not come out.

  Since the drooping prevention tool for the distribution line according to the present invention includes a tightening bolt that is inserted into a through hole provided in a central portion of each clamping plate and a nut that is screwed to the tightening bolt, Installation work of the drooping prevention tool for the distribution line of the present invention is easy and can be mounted in a short time.

In the drooping prevention tool for the distribution line according to the present invention, since the separation distance restriction member can be wound around the distribution line, even if the separation distance restriction member is longer than the interval between the clamp and the clamp, the separation distance restriction member is Even if the drooping prevention tool of the distribution line of the present invention is attached to the distribution line without drooping, the scenery is not damaged.
In addition, since the separation distance regulating member is a resin rope-shaped member having an aramid fiber as a core material, even when a large impact load is applied to the separation distance regulating member when the distribution line is broken, the separation distance regulating member is reliably cut. One end and the other end of the broken distribution line can be connected.

  In the drooping prevention device for the distribution line according to the present invention, since the clamp includes the waterproof cover for clamp, rainwater, dust and the like can be prevented from entering the clamp, and the clamp for clamping the distribution line can be used. Further, the separation distance regulating member can be reliably gripped by the separation distance regulating member clamp portion without causing slippage.

  The drooping prevention tool of the distribution line according to the present invention is a distribution line having a distribution line connection part, and the distribution line having the possibility of breakage, and the distribution line connection part is mainly located between the power pole and the power pole. Even if breakage due to stress corrosion cracking or the like occurs at a position away from the utility pole, it is possible to prevent the distribution line from drooping.

FIG. 1 is an explanatory view of a state in which a drooping prevention tool for a broken distribution line according to the present invention is attached to the distribution line. FIG. 2 is a view showing an attachment part in a normal state in a state in which the drooping prevention tool for the broken distribution line of the present invention is attached to the distribution line. FIG. 3 is a view showing an attachment portion at the time of breakage in a state where the drooping prevention tool for the broken distribution line of the present invention is attached to the distribution line. FIG. 4 is a front view of a normal time clamp to which the distribution line of the present invention and the separation distance regulating member are attached. FIG. 5 is a bottom view of the clamping plate of the clamp of the present invention. FIG. 6 is a plan view of the clamping plate of the clamp of the present invention. FIG. 7 is a front view of the clamp at the time of breakage to which the distribution line and the separation distance regulating member of the present invention are attached. FIG. 8 is a cross-sectional view of the clamp according to the present invention with a separation distance regulating member attached thereto. FIG. 9 is a partially enlarged sectional view showing a clamp holding plate and a gripping member at the time of breaking according to the present invention. FIG. 10 is a cross-sectional view showing a state before the separation distance regulating member is caulked and fixed in the drooping prevention tool for the broken distribution line according to the present invention. FIG. 11 is a plan view of a clamp according to the present invention with a clamp waterproof cover attached thereto. FIG. 12 is a side view of the clamp according to the present invention with a waterproof waterproof cover attached thereto.

The drooping prevention tool of the broken distribution line of the present invention will be described with reference to the embodiments shown in the drawings.
1, 4 and 7, A is a distribution line laid between utility poles, in which a conductor b is insulated by an outer surface a made of a crosslinked polyethylene insulator or the like. B is a distribution line connection part connecting the distribution lines, and the distribution line connection part is covered with a distribution line connection part cover 21 that prevents intrusion of rainwater, dust and the like. C is a breakage distribution wire drooping prevention tool according to the present invention, which is attached to the distribution line A on both sides of the distribution line connection portion B, and on both sides of a portion where the distribution line may be broken.
When the erected distribution line A breaks, the breakage distribution line droop prevention tool C connects one end and the other end of the suspended distribution line, and separates the broken parts when the distribution line breaks. It is composed of a separation distance regulating member D that regulates the distance so as to be kept at a constant interval, and two clamps E for fixing both ends of the separation distance regulating member D to the distribution line A.

2 to 12, the separation distance regulating member D is a rope-like member, a chain-like member, or a wire-like member, and a wedge that bulges toward the end side of the separation distance regulating member D. A gripping member 1 having a shape portion 2 is provided at both ends.
The gripping member 1 having the wedge-shaped portion is made of a metal such as copper, and is connected to the same outer diameter portion 3 and the tapered enlarged diameter portion 4 so that the separation distance regulating member D can be loosely fitted therein. A restricting member insertion hole 6 is provided.
The same outer diameter portion 3 has a columnar shape extending with substantially the same outer diameter, and the tapered enlarged diameter portion 4 has a truncated cone shape.
The gripping member 1 is a cylindrical caulking fixing portion that extends from the gripping member 1 and has a separation distance restriction member insertion hole 6 of the same diameter communicating with the separation distance restriction member insertion hole 6 therein. 7, the gripping member 1 and the caulking fixing portion 7 are integrally formed.

The spacing distance regulating member insertion hole 6 provided inside the gripping member 1 and the caulking fixing portion 7 has a diameter that allows the spacing distance regulating member D to be loosely fitted as shown in FIG. The caulking fixing portion 7 provided with the separation distance regulating member insertion hole 6 is a thick cylindrical body.
For example, when a rope-like member is used as the separation distance regulating member D, both ends of the rope-like member are inserted into the separation distance regulating member insertion holes 6 respectively, and the caulking fixing portion 7 is a caulking tool. By using caulking and the like, the caulking fixing portion 7 is protruded into the separation distance regulating member insertion hole 6, and the caulking fixing portion 7 and the rope member are fixed, whereby the gripping member 1 is fixed. Can be firmly attached to the rope-shaped member which is the separation distance regulating member D.
The gripping member 1 having the wedge-shaped part 2 and the caulking fixing part 7 use a cylindrical member provided with a separation distance regulating member insertion hole 6, and the outer periphery of the cylindrical member is cut to have the same outer diameter. The portion 3, the tapered enlarged diameter portion 4, the caulking fixing portion 7, and the like may be manufactured integrally.

The clamp E attaches a pair to a portion of the distribution line A that is ruptured between the utility poles, which may be broken, for example, both sides of the distribution line connection part B. 1 m20 cm, preferably about 1 m. When one end of the distribution line cut by the separation distance regulating member D is connected to the other end, the length from which the end of the broken distribution line hangs down does not increase from the breakage point to the clamp E. The distance is about 50 cm to 70 cm, preferably about 60 cm.
Further, the length of the separation distance regulating member D is 1 m to 1 m50 cm, which is slightly longer than the distance between the pair of clamps E, E, preferably about 1 m25 cm. It is a length that can be held at a position slightly lower than the installation position of the electric wire A.

As shown in FIGS. 4 to 7, the clamp E attached to the distribution line A on both sides of the distribution line connection portion B includes two opposing sheets that sandwich the distribution line A and the separation distance regulating member D from above and below. The clamping plates 8 and 8, the fastening bolts 16 for fastening the two clamping plates 8 and 8, a washer 25, an elastic spring 17, and a fastening member 19 including a nut 18 are included.
One side portion of the inner surface of the clamping plates 8 and 8 is a concave portion facing each other for sandwiching a part or the whole of the same outer diameter portion 3 and having a cylindrical shape divided into two parts. The same outer diameter portion clamping portion 9 and a concavity facing each other for clamping a part or the whole of the wedge-shaped portion 2, and a wedge portion clamping portion constituted by a concave portion formed by dividing the truncated cone cylinder into two parts 10 is provided, and the wedge part clamping part 10 is provided so as to increase in diameter toward the end part.
Further, on the other side of the inner surfaces of the clamping plates 8 and 8, there is a concave portion facing each other for clamping the distribution line A, and the distribution line clamping portion 11 is constituted by a concave portion formed by dividing the cylindrical body into two parts. Is provided.

As shown in FIG. 5, the distribution line holding part 11 is provided with a plurality of ridges 14 on the inner surface of the concave part of the distribution line holding part 11, and when the breakage occurs, the distribution line A is connected to the holding plate 8. , Even if the distribution line A fitted in the distribution line holding part 11 of 8 is pulled strongly, the ridges 14 do not bite into the outer surface a of the distribution line A so that the distribution line A does not slide. It can be gripped.
In addition, the outer surface of the distribution line is connected to the distribution line holding clamp part 13 or the distribution line holding part 11 so that the distribution line A can be gripped from the distribution line holding clamp part 13 without sliding. You may provide the edge part which can bite into a.

  The clamping plates 8, 8 are provided with a through hole 15 in the center, and the clamping bolt 16 is inserted from below to project from the convex portion 22 at the center of the upper surface of the clamping plates 8, 8. The washer 25 and the elastic spring 17 are fitted into the front end of each of the two, and the nut 18 is screwed onto the clamping bolt 16 so that the same outer diameter portion sandwiched between the two clamping plates 8 and 8 is clamped. The concave portion of the portion 9 and the wedge portion sandwiching portion 10 face each other to constitute a separation distance regulating member clamp portion 12 for sandwiching the separation distance regulating member D, and the concave portion of the distribution line sandwiching portion 11 faces each other. A distribution wire clamping clamp portion 13 is configured to clamp the wire.

The separation distance regulating member clamp part 12 and the distribution line clamping clamp part 13 are configured such that the gripping member 1 having the wedge-shaped part 2 regulates the separation distance by separating the distribution line A when the distribution line is broken. The separation distance regulating member clamp portion 12 is moved by the traction force applied to the member D, and the separation distance regulating member clamp portion side of the two clamping plates 8 and 8 is moved by the movement of the wedge-shaped portion 1. 9 is forcibly opened by the width c shown in FIG. 9, whereby the distribution wire clamping clamp portion side is shifted to a direction forcibly closing in the direction indicated by the arrow in FIG.
In addition, in order to smoothly change the inclination of the sandwiching plates 8, 8, the upper surface central portion of the upper sandwiching plate 8 and the lower surface central portion of the lower sandwiching plate 8 have gentle convex shapes, respectively. A portion 22 is provided.

Since the separation distance regulating member D is longer than the interval between the two clamps E attached to the distribution line, when the breakage distribution line droop prevention tool is mounted, the separation distance regulation member D is not drooped from the distribution line A. It can be wound around the distribution line A.
Further, if the separation distance regulating member D is a resin rope-shaped member having an aramid fiber as a core material, it will not be cut or stretched even when a large impact load at the time of breaking is applied.
In addition, as the separation distance regulating member D, a chain member or a wire-like member may be used as long as it can be firmly attached to the caulking fixing portion by caulking.

Reference numeral 20 denotes a waterproof cover for the clamp, which covers the clamp E, and has a resin lid portion 20a covering the upper half of the clamp E and a resin bottom portion 20b covering the lower half of the clamp E on one side. And the other side can be opened and closed, and the lid portion 20a and the bottom portion 20b can be locked and attached by the locking portion 20c, so that rainwater, dust or the like does not enter the clamp E.
In addition, a distribution line connection part cover 21 is also attached to the distribution line connection part B so as to cover the distribution line connection part B and prevent intrusion of rainwater, dust and the like.

Reference numeral 23 denotes a stopper provided at an end of the gripping member 1 when a force is applied to pull the rope in a direction opposite to the direction in which the rope is pulled at the time of breaking, or the clamp E is loosely tightened. In this case, the gripping member 1 having the wedge-shaped portion is prevented from coming out of the clamping portion of the clamp E.
Reference numeral 24 denotes a terminal cap that is attached to both ends of the separation distance regulating member D such as a rope member. The end portion of the terminal cap 24 is inserted inside the caulking fixing portion 7, and the inserted portion is fixed to the caulking. When the portion 7 is fixed to the separation distance regulating member D by caulking, it is fixed together and attached to both ends of the separation distance regulating member D, so that intrusion of rainwater or the like can be prevented and the end of the rope is exposed. Therefore, it is possible to prevent an operator from catching a hand or the like and being injured.

Since the present invention has the above configuration, the clamping member 19 of the clamp E is loosened, and the same outer diameter portion clamping portion 9 and the wedge portion of the separation distance regulating member clamping portion 12 between the upper and lower clamping plates 8 and 8 are provided. The holding part 5 having the same outer diameter part of the holding member 1 and the tapered enlarged diameter part 4 is fitted into the holding part 10, the fastening bolt 16 and the nut 18 of the fastening member 19 are fastened, and the separation distance is set. The clamp E is attached to both ends of the regulating member D to form a distribution line droop prevention tool C. When the distribution line droop prevention tool C is attached to the distribution line, the clamping bolt of the clamp E is loosened. The distribution wire clamping portion 11 of the wire clamping clamp portion 13 provided on the clamping plates 8 and 8 is fitted into the distribution wire A at both ends of the distribution wire connection portion B, and then the tightening bolt 16 and the nut 18 are fitted. By holding the clamping plates 8 and 8 from above and below With, the distribution line connection B is the distance limiting member D to bypass, to attach the ends of the distribution line of the distribution line connection B.
In addition, when attaching the drooping prevention tool C of the distribution line to the distribution line A by the clamp E, the fastening member 19 is such that the distribution line holding portion 11 does not bite deeply into the outer surface a of the distribution line A. Tighten to and install.

When the distribution line A is broken in the state where the drooping prevention tool C of the distribution line is attached to the distribution line A, the distribution line A falls from the broken part to the left and right due to the tensile load of the distribution line A immediately after breaking. While start, said the distance limiting member D which is attached by a clamp E, one end and the other end portion of the broken distribution line is tethered by impact when stopping the joint, the distance regulation A strong traction force that pulls the member D left and right acts.

By this traction force, the separation distance regulating member D moves in the separation distance regulating member clamp part 12, and at the same time, the wedge-shaped part 2 attached to the separation distance regulating member D is also moved. By this movement, the tapered enlarged diameter portion 4 of the wedge-shaped portion 2 is displaced so as to protrude from the wedge-portion sandwiching portion 10, and the separation distance regulating member of the two clamping plates 8, 8 of the clamp E The clamp part side is forcibly pushed open in the direction of the arrow on the left side of the clamp E shown in FIG. 7 by an interval c shown in FIG.
Along with this operation, the clamping plates 8 and 8 are tightened at the center by the fastening bolt 16 and the nut 18, and the washer 25 fitted into the clamping bolt 16 is a gentle convex at the center of the upper surface of the clamping plates 8 and 8. The clamping plates 8 and 8 change the inclination angle with the abutting portion as a fulcrum and are used for clamping the distribution line in the direction of the arrow on the right side of the clamp E shown in FIG. The clamp side is forcibly shifted.

  When the distribution line A is broken by the above-described series of operations, one end and the other end of the distribution line that are immediately broken are strongly held by the distribution line clamping clamp portion 13 of the clamp E, respectively. The protrusion 14 provided on the inner surface of the electric wire holding part 11 bites into the outer surface a of the distribution line, or the edge part provided in the electric wire holding clamp part 13 bites into the outer surface a of the distribution line, and the separation distance regulating member Almost simultaneously with the strong traction force applied to D, the distribution line A is firmly held.

Further, the clamp E includes the direction in which the clamping plates 8 and 8 on the side of the separation distance regulating member clamp part are pulled by the separation distance regulating member D, and the clamping plates 8 and 8 on the side of the distribution line clamping clamp part. Since the direction pulled by the load of A becomes the opposite direction, when the distribution line A is broken, the clamp E is rotated about 45 degrees clockwise as shown in FIG.
Therefore, the distribution line A is pulled by the distribution line A sandwiched by the distribution line clamping clamp portion 13 by the tensile load of the broken distribution line at the attachment position of the clamp E and the distribution line A on the installation side. Since the distribution wire clamping clamp portion 13 has a positional relationship of about 45 degrees with respect to the direction, the force to pull out the distribution wire A from between the clamping plates 8 and 8 is dispersed. In other words, the direction in which the distribution line A is pulled and the distribution line at the broken end are bent by about 45 degrees, so that even if the distribution line A is pulled, it cannot be easily pulled out.

Since this invention was set as the said structure, installation of the drooping prevention tool of a distribution line is easy, and the restoration construction when a fracture | rupture generate | occur | produces can also be performed easily. Further, since the length of the end of the broken distribution line depends on the distance between the clamps and the breakage point, the end of the distribution line does not droop for a long time.
When the distribution line breaks, one end and the other end of the broken distribution line are firmly held by the clamp for clamping the distribution line and the force for pulling the distribution line from the distribution line clamping clamp is also dispersed. Therefore, it is possible to reliably hold the distribution line with the clamp and reliably prevent the broken end of the distribution line from sagging.

And, during normal times, the force to grip the distribution line with the clamp for clamping the distribution line is clamped to the outer surface of the distribution line and does not dig deeply into the clamp so that no deep wrinkles are attached. In this case, rainwater does not enter from the outer surface and stress corrosion cracking breakage does not occur.
A pair of the clamps are attached to both sides of the distribution line connecting portion, and the separation distance regulating member is longer than the interval between the attached clamps. Therefore, the distribution line after the breakage is more than the installation position of the distribution line before the breakage. It is held in a slightly lowered position, the clamp rotates about 45 degrees, both ends of the separation distance restricting member jump upward, and the short end of the broken distribution line hangs down. The position can be easily confirmed.

  Since the gripping member having the wedge-shaped portion is a cylindrical body having a long caulking fixing portion, it can be caulked and fixed to the separation distance regulating member D at a plurality of locations, so that it is firmly attached to the separation distance regulating member. Even if the separation distance regulating member is pulled strongly, the gripping member moves integrally with the wedge-shaped part 2 and reliably expands the separation distance regulating member clamp part of the clamp. Can do.

  Since the separation distance regulating member can be spirally wound around and attached to the distribution line and the distribution line connecting portion by the clamp, even if the separation distance regulation member is longer than the interval between the clamps, The separation distance regulating member does not hang down and does not damage the landscape.

A Distribution line a Outer surface B Distribution line connection part C Breaking distribution line droop prevention tool D Separation distance regulating member E Clamp 1 Gripping member 2 Wedge-shaped part 3 Same external part 4 Taper-shaped enlarged diameter part 5 Gripping part 6 Separation distance Restricting member insertion hole 7 Caulking fixing portion 8 Holding plate 9 Same outer diameter portion holding portion 10 Wedge portion holding portion 11 Distribution line holding portion 12 Separation distance restriction member clamp portion 13 Distribution wire holding clamp portion 14 Convex line 15 Through hole 16 Tightening Bolt 17 Elastic spring 18 Nut 19 Fastening member 20 Waterproof cover for clamp 21 Waterproof cover for distribution line connection part

Claims (14)

A breakage prevention tool for a broken distribution line, which is attached to a breakable distribution line and prevents the distribution line from drooping during breakage,
The drooping prevention tool has a predetermined length, and a separation distance regulating member for regulating the separation distance between the fractured portions when the distribution line is broken, and 2 for fixing both ends of the separation distance regulating member to the distribution line. With two clamps,
The separation distance regulating member includes a gripping member having a wedge-shaped portion sandwiched between the clamps and bulging toward an end side of the separation distance regulating member at both ends, and the clamps face each other. A clamping part for clamping the distribution line, the clamping part for clamping the distribution line formed between the two clamping plates, and a clamping member for fastening the two clamping plates; A separation distance regulating member clamping part for sandwiching the gripping member having the wedge-shaped part,
The gripping member including the wedge-shaped portion moves in the separation distance regulating member clamp portion by a traction force applied to the separation distance regulating member due to separation of the distribution line when the distribution line is broken. As the part moves, the two clamping plates constituting the clamps are slightly forcibly opened on the separation distance regulating member clamping part side, and the distribution line clamping clamp part side is slightly forcibly closed. A tool for preventing drooping of a broken distribution line. The gripping member having the wedge-shaped portion includes the same outer diameter portion extending at substantially the same outer diameter, and a tapered enlarged diameter portion that is continuous with the same outer diameter portion and forms the wedge-shaped portion. The drooping prevention tool of the distribution line of Claim 1 provided with the site | part. The clamp part for the separation distance regulating member of the clamp has a wedge part holding part constituted by opposing concave parts for holding a part or the whole of the wedge-shaped part, and the wedge part holding part is provided at an end part. The tool for preventing drooping of a broken distribution line according to claim 1 or 2, wherein the diameter of the broken line increases. The gripping member having the wedge-shaped portion includes the same outer diameter portion extending at substantially the same outer diameter, and a tapered enlarged diameter portion that is continuous with the same outer diameter portion and forms the wedge-shaped portion. The separation distance regulating member clamp portion of the clamp includes a same outer diameter portion sandwiching portion configured by facing concave portions for sandwiching a part or the whole of the same outer diameter portion, and the wedge-shaped portion. The wedge part clamping part comprised by the recessed part which faces partly or entirely clamped, and the said wedge part clamping part is expanded in diameter toward an edge part. The dripping prevention tool of the broken distribution line as described in 2. 5. The distribution line clamping clamp part has an edge part that can bite into an outer surface of the distribution line when the distribution line clamping clamp side is shifted in a slightly closing direction. The dripping prevention tool of the broken distribution line as described in 2. The gripping member having the wedge-shaped portion is made of metal, and has the same outer diameter portion extending at substantially the same outer diameter, and a tapered enlarged diameter portion that is continuous with the same outer diameter portion and forms the wedge-shaped portion. And a caulking fixing part extending from the gripping member and having a separation distance restriction member insertion hole therein, and the separation distance restriction member is inserted into the separation distance restriction member insertion hole. 6. The tool for preventing drooping of a broken distribution line according to any one of claims 1 to 5, wherein the tool is fixed by crimping to the crimping fixing part. The wedge-shaped portion has a tapered diameter, and the clamping plate of the clamp has a concave portion that corresponds to the tapered shape of the wedge-shaped portion and is formed by dividing the truncated cone column into two parts. The drooping prevention tool of the broken distribution line in any one of Claim 6 thru | or 6. The clamp part for clamping the distribution line of the clamp has a distribution line clamping part constituted by facing concave parts for clamping the distribution line, and the distribution line clamping part has an anti-slip ridge on the inner surface. The sag prevention tool of the broken distribution line in any one of Claim 1 thru | or 7 provided. Each said clamping board has a through-hole provided in the center part, The said fastening member is provided with the clamping bolt penetrated to the said through-hole, and the nut screwed to the said clamping bolt. Item 9. A tool for preventing dripping of a broken distribution line according to any one of Items 8 to 10. The holding member having the wedge-shaped portion has a separation distance restriction member insertion hole, and the separation distance restriction member insertion hole penetrates from one end to the other end of the grasping member. The dripping prevention tool of the broken distribution line in any one of 9. 11. The drooping prevention tool for a fractured distribution line according to claim 1, wherein the separation distance regulating member can be wound around the distribution line. The breakage distribution wire drooping prevention tool according to any one of claims 1 to 11, wherein the separation distance regulating member is a resin rope-shaped member having an aramid fiber as a core material. The said clamp is provided with the waterproof cover for clamps, The drooping prevention tool of the broken distribution line in any one of Claim 1 thru | or 12. The breakable distribution line droop preventer according to any one of claims 1 to 13, wherein the breakable distribution line is a distribution line having a distribution line connection portion.

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