JP5738677B2 - Mounting bracket for overhead power distribution lines - Google Patents

Description

  The present invention relates to a column fitting for an aerial distribution line. In particular, the present invention relates to a structure of a mounting bracket that attaches a tension insulator connected to a retention clamp that holds an overhead distribution line to an arm metal supported by a utility pole.

  In the case of installing an overhead distribution line on a utility pole, it is known that there are two so-called so-called pulling columns and retaining columns. Generally, an overhead distribution line comes into contact with a groove portion of an insulator fixed to an arm supported by a power pole, and a binding wire is wound around the insulator and the overhead distribution line so that the overhead distribution line is used as a power pole. I support it. On the other hand, the retaining column supports the overhead distribution line on the utility pole by attaching a tension insulator coupled to a retention clamp that sandwiches the overhead distribution line to a brace supported on the utility pole.

  By the way, power distribution work has been implemented in which the overhead distribution line is extended from the end column that has the overhead distribution line retained, and the extended overhead distribution line is retained in the terminal column in a live line (energized) state. Sometimes. In this case, the pin insulator fixed to the arm metal provided on the end pillar was removed, the torsion strap was fixed with the pin insulator, and the tension insulator connected to the extended overhead distribution line was connected to the torsion strap.

  Similarly, there is a case where a distribution work is performed in which an overhead distribution line in a live line (energized) state is changed from a passing column by a passing column to a distribution column by a retaining column. In this case, there is disclosed a mounting bracket for an aerial distribution line in which a tension insulator can be easily attached to a brace supported on a utility pole by using a hot stick (insulating operation rod), that is, by an indirect hot wire method. (For example, refer to Patent Document 1).

  The mounting bracket of the overhead power distribution line according to Patent Document 1 can easily attach the tension insulator to the armrest using the lever provided on the armrest of the utility pole. It is said that the retaining clamp can be easily supported and the amount of work to be changed from the street-mounting column by the pulling column to the sorting column by the retaining column can be reduced.

JP 2000-244502 A

  FIG. 7 is a perspective exploded view of a column fitting for an aerial distribution line according to Patent Document 1. FIG. FIG. 8 is a perspective view of a mounting bracket for an aerial distribution line according to Patent Document 1, and is a state diagram attached to a brace. FIG. 7 of the present application corresponds to FIG. 1 of Patent Document 1, and FIG. 8 of the present application corresponds to FIG. 4 of Patent Document 1.

  Referring to FIG. 7, a mounting bracket (hereinafter referred to as a mounting bracket) 7 of an aerial distribution line according to Patent Document 1 includes an upper bracket 71 and a lower bracket 72. The upper metal part 71 is comprised by the strip | belt-shaped upper board 71a and a pair of bolt member 71b * 71b. The pair of bolt members 71b and 71b have their heads fixed to the upper plate 71a. Moreover, as for a pair of bolt member 71b * 71b, those thread parts have provided the predetermined space | interval, and are extended substantially parallel. A nut 71n can be screwed to the threaded portion of the bolt member 71b.

  Referring to FIG. 7, the lower metal fitting 72 includes a lower plate 72a formed in a T shape, a pair of cylindrical columns 72b and 72b, and a pair of straps 72c and 72c supported by the cylindrical columns 72b. . The base ends of the pair of cylindrical columns 72b and 72b are fixed to the lower plate 72a. A through hole 721 is opened in the cylindrical column 72b. And a pair of bolt member 71b * 71b can be inserted in these through-holes 721 * 721.

  Referring to FIGS. 7 and 8, after the arm metal 70 is disposed between the pair of cylindrical columns 72b and 72b, the pair of bolt members 71b and 71b are inserted into the pair of through holes 721 and 721, and the nut 71n Is fastened to the bolt member 71 b, the arm metal 70 can be held between the upper metal part 71 and the lower metal part 72.

  Referring to FIG. 8, an insulator 7 g is attached to the end of the arm metal 70. When the bolt 71g protruding from the bottom of the lever 7g is inserted into a through hole provided in the arm metal 70 and a nut (not shown) is fastened, the insulator 7g can be fixed to the arm metal 70. Usually, the nut 72 is covered with a cap 72g for preventing dropping off.

  Referring to FIG. 8, cap 72g is removed with a cap attaching / detaching tool (not shown) attached to the tip of the hot stick, and then a rotating tool (not shown) attached to the tip of the hot stick is used. Remove the nut. Next, when the bolt 71g is inserted into the mounting hole 722 (see FIG. 8) provided in the lower plate 72a and the nut is fastened to the bolt 71g again, the lower fitting 72 can be fixed to the arm metal 70. In addition, the lower metal fitting 72 is previously hold | maintained with the attachment tool (not shown) attached to the front-end | tip part of another hot stick.

  Referring to FIG. 7, the strap 72c is integrally formed of a cylindrical portion and a band plate portion. The cylindrical portion of the strap 72c is difficult to move in the axial direction of the cylindrical column 72b, but is connected to be freely rotatable in the circumferential direction of the cylindrical column 72b so that the end of the strip plate turns. The strap plate portion of the strap 72c is provided with a mounting hole 723 into which the pin 81p is inserted so as to be connectable to the tip portion of the first tension insulator 81 (see FIG. 8).

  Referring to FIG. 8, the first tension insulator 81 has a bifurcated tip. When the tip of the strap 72c is inserted into the branch portion at the tip of the first tension insulator 81 and the pin 81p is inserted into the attachment hole 811 and the attachment hole 723, the strap 72c and the first tension insulator 81 can be rotatably connected. .

  Referring to FIG. 8, the first tension insulator 81 further has a second tension insulator 82 connected to the base end portion thereof. The illustrated tension insulator 80 is composed of two tension insulators. A tension clamp 83 is connected to the second tension insulator 82. The retaining clamp 83 can hold an aerial distribution line (not shown) partially peeled off, and can hold the aerial distribution line to the arm metal 70 with a considerable tension.

  Referring to FIG. 8, the first tension insulator 81, the second tension insulator 82, and the retaining clamp 83 are connected in advance on the ground. Then, after connecting the first tension insulator 81 to the post fitting 7, the overhead distribution line (not shown) is drawn to the retention clamp 83 and held by using a wire tensioner (not shown). An aerial distribution line can be installed on a utility pole. In addition, after a series of connection construction is completed, the retaining clamp 83 is covered with an insulating cover (not shown).

  Referring to FIG. 8, a tension insulator 80 and a retaining clamp 83 can be connected to the other strap 72 c of the post fitting 7. Then, the overhead distribution wires are wound around the pair of retaining clamps 83 and 83 so as to straddle the armor 70 with a margin. Can be armored.

  The pillar metal fitting 7 according to Patent Document 1 can easily attach the pillar metal fitting 7 to the arm metal 70 by sandwiching the arm metal between the upper metal fitting 71 and the lower metal fitting 72 and fastening the nut. 7, the tension insulator 80 and the retaining clamp 83 can be easily supported.

  However, the post fitting 7 according to Patent Document 1 includes a step of removing the cap 72g from the bolt 71g provided in the insulator 7g, a step of removing the nut from the bolt 71g, and the mounting hole 722 provided in the lower plate 72a as the bolt 71g. There is a problem that a step of inserting the nut into the bolt 71g is included again.

  Moreover, the mounting bracket 7 according to Patent Document 1 has a problem that it is necessary to replace the tip tool attached to the tip of the hot stick for each of these processes. If the mounting bracket can be attached to the arm metal 70 without operating the cap 72g and the nut provided on the insulator 7g fixed to the arm metal 70, the overhead power distribution cable from the end column with the overhead power distribution cable retained. A series of attachment processes for extending the length of the tool can be simplified, and the replacement of the tip tool attached to the tip of the hot stick can be reduced, so that the work efficiency can be improved. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such problems, and is a mounting bracket that can be attached to a brace by an indirect hot wire method, and can be attached to the brace more easily so as to improve work efficiency. An object of the present invention is to provide a mounted metal fitting.

  The present inventors rotationally couple the other end portions of the first and second gripping brackets so that the one end portions of the pair of first and second gripping brackets can be opened and closed. A bolt member is suspended from the bolt member, and a strap is connected to the bolt member, and a nut is fastened to the bolt member. The bracket is provided with a first gripping piece that can be gripped by a gripping tool provided at the tip of the hot stick, and the second gripping bracket is held by a gripping tool provided at the tip of the hot stick to be opened and closed. It is considered that this problem can be solved by providing the gripping pieces, and based on this, the following new overhead pole electric wire mounting brackets have been invented.

  (1) An overhead power distribution line mounting bracket according to the present invention is attached to an armature that fixes a pin insulator and is connected to a tension clamp that is connected to a tension clamp that sandwiches the overhead power distribution line. A pair of first gripping bracket and second gripping bracket, each of which is a column bracket and is composed of a short piece and a long piece whose band plate is bent substantially at right angles, so that the long pieces can be opened and closed with respect to each other. A pair of first gripping brackets and second gripping brackets capable of rotatably connecting ends of the pair of short pieces, closing the pair of long pieces and sandwiching the arm metal, and lengths of the first gripping brackets A bolt member suspended from the end of the piece, a strap rotatably connected to the bolt member, and having a mounting hole at the end for connecting the tension insulator, and screwed to the threaded portion of the bolt member; A nut for fastening the second gripping bracket to the bolt member; The first gripping bracket has a hook-shaped locking piece that can be locked to the shaft portion of the pin insulator on one wing of the long piece, and can be gripped by a gripping tool provided at the tip of the hot stick. A first gripping piece is provided on the outer surface of the short piece, and the second gripping piece is gripped by a gripping tool provided at the tip of the hot stick, and the second gripping piece for opening and closing the long piece is the long piece. On the outer surface.

  (2) The first gripping metal fitting has a locking hole opened in a regular square at the end of the long piece, and the bolt member is a hemispherical head that is prevented from falling off the locking hole And a quadrangular prism neck that is fitted in the locking hole and is prevented from rotating.

  (3) The strap includes a cylindrical portion that is rotatably connected to the shaft portion of the bolt member, a band plate portion having a base end portion coupled to an outer periphery of the cylindrical portion, and the attachment hole being opened at a distal end portion; Preferably, the bolt member has a flange portion at the shaft portion that prevents the cylindrical portion from dropping off.

  (4) It is preferable that the said 2nd holding metal fitting has a notch groove which can approach into the thread part of the said bolt member.

  (4) It is preferable that the said 2nd holding metal fitting has a notch groove which can approach into the thread part of the said bolt member.

  The mounting bracket of the aerial distribution line according to the present invention is configured such that the other ends of the first and second gripping brackets are rotationally coupled so that the one ends of the pair of first and second gripping brackets can be opened and closed. A bolt member is suspended from one end of the gripping bracket, a strap is connected to the bolt member, and a nut is fastened to the bolt member. The first gripping bracket is provided with a first gripping piece that can be gripped with a gripping tool provided at the tip of the hot stick, and the second gripping bracket is gripped with a gripping tool provided at the tip of the hot stick. Since the second gripping piece to be opened and closed is provided, it can be attached to the arm bracket more easily than the conventional post fitting. The work efficiency can be improved by using the mounting bracket of the overhead distribution line according to the present invention.

It is the perspective view which shows the structure of the pillar metal fitting of the overhead distribution electric wire by one Embodiment of this invention, and is the figure which looked at the state which closed a pair of holding metal fitting from the front side. It is the perspective view which shows the structure of the mounting bracket of the aerial distribution line by the said embodiment, and is the figure which looked at the state which opened a pair of holding | grip fitting from the back side. It is a perspective exploded view which shows the structure of the column metal fittings of the aerial distribution line by the said embodiment. It is a perspective view of the mounting bracket of the aerial distribution line according to the embodiment, and is a state diagram attached to a brace. It is a front view of the hot stick for grasping the column metal fittings of the aerial distribution line according to the embodiment. It is a front view of the mounting bracket of the aerial distribution line according to the embodiment, and is a state diagram in which the aerial distribution line is extended from a terminal column that holds the aerial distribution line. It is a perspective exploded view of a column fitting of an aerial distribution line according to the prior art. It is a perspective view of the mounting bracket of an aerial distribution line by a prior art, and is a state diagram attached to a brace.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Configuration of overhead brackets for overhead distribution lines]
Initially, the structure of the pillar metal fittings of the aerial distribution line according to one embodiment of the present invention will be described. FIG. 1 is a perspective view showing a configuration of a pillar fitting of an overhead distribution line according to an embodiment of the present invention, and is a view of a state in which a pair of gripping fittings is closed as viewed from the front side. FIG. 2 is a perspective view showing a configuration of a column fitting of the overhead power distribution line according to the embodiment, and is a view of a state in which a pair of holding fittings is opened from the back side.

  FIG. 3 is a perspective exploded view showing the configuration of the column fitting of the overhead distribution line according to the embodiment. FIG. 4 is a perspective view of a mounting bracket for an aerial distribution line according to the embodiment, which is a state diagram attached to a brace. FIG. 5 is a front view of a hot stick for gripping the pole bracket of the overhead distribution line according to the embodiment.

  FIG. 6 is a front view of the mounting bracket for an aerial distribution line according to the above-described embodiment, and is a state diagram in which the aerial distribution line is extended from a terminal column in which the aerial distribution line is secured. In addition, since the effect | action of the component which has the code | symbol same as the code | symbol used by the prior art is the same, it may omit in the following description.

  Referring to FIGS. 1 to 3, an overhead power distribution line mounting bracket (hereinafter abbreviated as a mounting bracket) 10 according to an embodiment of the present invention includes a pair of first holding bracket 1 and second holding bracket 2. I have. The 1st holding metal fitting 1 is comprised by the short piece 11 and the long piece 12 with which the strip | belt board was bent at substantially right angle. Similarly, the 2nd holding | grip metal fitting 2 is comprised by the short piece 21 and the long piece 22 with which the strip | belt board was bent at substantially right angle.

  Referring to FIG. 1 to FIG. 3, the mounting bracket 10 is rotatably connected by inserting a pin 1 p into the ends of the pair of short pieces 11 and 21 so that the pair of long pieces 12 and 22 can be opened and closed. doing. And a pair of long piece 12 * 22 can be closed and the arm bracket 70 can be clamped (refer FIG. 4).

  1 to 3, the post fitting 10 includes a bolt member 3, a strap 4, and a nut 3n. The bolt member 3 is suspended from the end of the long piece 12 of the first gripping fitting 1. The strap 4 is rotatably connected to the bolt member 3. Further, the strap 4 has an attachment hole 42p connected to the tension insulator 80 at its end. The nut 3 n can be screwed into the threaded portion 311 of the bolt member 3. Then, the nut 3n can fasten the second holding fitting 2 to the bolt member 3.

  Referring to FIGS. 1 to 3, the strap 4 includes a cylindrical portion 41 and a strip plate portion 42. The cylindrical portion 41 is rotatably connected to the shaft portion 31 of the bolt member 3. The band plate portion 42 has a base end portion connected to the outer periphery of the cylindrical portion 41 by welding. Further, the band plate portion 42 has an attachment hole 42p opened at the tip portion. On the other hand, the bolt member 3 includes a flange portion 31 f that prevents the cylindrical portion 41 from dropping off at the shaft portion 31.

  Referring to FIG. 3, the first holding metal fitting 1 has a locking hole 12 h opened in a regular square at the end of the long piece 12. On the other hand, the bolt member 3 includes a hemispherical head 3h that is prevented from dropping from the locking hole 12h. In addition, the bolt member 3 includes a regular quadrangular columnar neck portion 3k that is fitted into the locking hole 12h and is prevented from rotating.

  In the embodiment shown in FIG. 3, the head portion 3 h and the neck portion 3 k are integrally formed, and after the shaft portion 31 of the bolt member 3 is inserted into the cylindrical portion 41 of the strap 4, the tip portion of the shaft portion 31 is the head portion 3 h. It is press-fitted into.

  Referring to FIGS. 1 to 3, the second gripping metal 2 has a notch groove 221 in the long piece 22. As shown in FIG. 2, when the second gripping metal fitting 2 is rotated and closed as shown in FIG. 1 from the state in which the second gripping metal fitting 2 is opened with respect to the first gripping metal fitting 1, The notch groove 221 opened to the side can enter the threaded portion 311 of the bolt member 3 tilted. Then, when the nut 3n is screwed into the threaded portion 311 of the bolt member 3, the second holding fitting 2 can be fastened between the nut 3n and the flange portion 31f.

  Referring to FIG. 3, the notch groove 221 opens on the side surface side of the long piece 22 of the second holding fitting 2 and closes toward the end of the long piece 22. Therefore, the threaded portion 311 of the bolt member 3 is prevented from coming off from the long piece 22 against the force with which the strap 4 connected to the bolt member 3 is pulled.

  Referring to FIGS. 1 to 3, the first holding metal fitting 1 includes a hook-shaped locking piece 121 on one wing of a long piece 12. Referring to FIG. 4, when the first holding fitting 1 is slid to the upper surface of the arm metal 70 in a horizontal state, the shaft portion 71 p of the pin lever 7 p is engaged between the one wing of the locking piece 121 and the long piece 12. You can stop.

  1 to 3, the first gripping bracket 1 includes a first gripping piece 1 c that protrudes from the outer surface of the short piece 11. With reference to FIG. 5, the first gripping piece 1 c can be gripped by the gripping tool 92 provided at the tip of the hot stick 9. On the other hand, the second gripping bracket 2 includes a second gripping piece 2 c that protrudes from the outer surface of the long piece 22. With reference to FIG. 5, the long piece 22 can be opened and closed by holding the second holding piece 2 c with the holding tool 92 provided at the tip of the hot stick 9.

  Referring to FIG. 5, the hot stick 9 includes a long operation rod 91 and a gripping tool 92. The hot stick 9 is provided with an operating bar 93. The gripping tool 92 is detachably attached to the distal end portion of the operation rod 91.

  Referring to FIG. 5, the gripping tool 92 is composed of a pair of curved gripping arms 9a and 9b that open and close. One gripping arm 9a is a fixed arm with a base end fixed, and the other gripping arm 9b rotates around a rotation shaft 9c provided at the base end of one gripping arm 9a. It is a movable arm.

  Referring to FIG. 5, the operation bar 93 is held along the operation bar 91. The distal end portion of the operating rod 93 is rotatably connected to the other gripping arm 9b. And if the operating lever 94 provided in the base end part of the action | operation stick | rod 93 is operated, the other holding arm 9b can be opened and closed with respect to one holding arm 9a. In the hot stick 9, the intermediate portion between the operation rod 91 and the operation rod 93 is connected by an insulating plastic pipe or the like, and insulation is ensured so as to be suitable for the indirect hot wire method.

  The hot stick 9 shown in FIG. 5 is a so-called “Yatco” that can grip the first gripping piece 1c provided on the post fitting 10 disposed at a high place with a pair of gripping arms 9a and 9b ( 1 to 3). Further, the long piece 22 can be opened and closed by holding the second holding piece 2c with the pair of holding arms 9a and 9b (see FIGS. 1 to 3).

[Effects of mounting brackets for overhead distribution lines]
Next, the operation and effect of the columnar bracket 10 will be described while describing a method for mounting an overhead distribution line using the columnar bracket 10 according to the embodiment.

  First, as shown in FIG. 2, the second gripping bracket 2 is opened with respect to the first gripping bracket 1, and a gripping tool 92 (see FIG. 5) provided at the distal end portion of the hot stick 9 is used. The gripping piece 1c is gripped, and the mounting bracket 10 is moved toward the arm metal 70 supported by the utility pole P serving as a terminal pole (see FIG. 4).

  Next, referring to FIG. 4, when the first holding metal fitting 1 is slid to the upper surface of the arm metal 70 in a horizontal state, the inner wall of the short piece 11 of the first holding metal fitting 1 comes into contact with the side surface of the arm metal 70, The shaft portion 71p of the pin lever 7p can be locked between the locking piece 121 and the single wing of the long piece 12.

  Next, as shown in FIG. 2, when the second gripping metal fitting 2 is rotated and closed as shown in FIG. 1 from the state in which the second gripping metal fitting 2 is opened with respect to the first gripping metal fitting 1, the notch The groove 221 can enter the threaded portion 311 of the bolt member 3.

  Next, referring to FIG. 2 or FIG. 3, when the nut 3n is screwed into the threaded portion 311 of the bolt member 3, the second gripping metal fitting 2 can be fastened between the nut 3n and the flange portion 31f. The arm metal 70 can be held between the pair of gripping metal fittings 1 and 2. The nut 3n is mounted in advance on a ratchet tool provided at the tip of a hot stick (not shown).

  Next, referring to FIG. 6, when the tip end of the strap 4 is inserted into the branch portion at the tip of the first tension insulator 81 and the pin 81 p is inserted into the attachment hole 811 and the attachment hole 42 p, The tension lever 81 can be rotatably connected.

  Referring to FIG. 4, the first tension insulator 81 further has a second tension insulator 82 connected to the base end portion thereof. The illustrated tension insulator 80 is composed of two tension insulators. A tension clamp 83 is connected to the second tension insulator 82. The retaining clamp 83 can hold the overhead distribution line W with the coating partially peeled off (see FIG. 6), and can hold the overhead distribution line W to the arm metal 70 with a considerable tension.

  Referring to FIG. 6, a pin insulator 7p is fixed to a brace 70 provided on a utility pole P that is a terminal pole. The pin insulator 7p fixes the torsion strap 5. The torsion strap 5 retains the overhead distribution line W. Referring to FIG. 6, if the above-described mounting column method is performed, the overhead distribution line W can be extended from the terminal column that is the retaining column without removing the pin insulator 7 p from the arm metal 70. The retaining clamp 84 shown in FIG. 6 is functionally the same as the retaining clamp 83 shown in FIG. 4 or FIG.

  Referring to FIG. 6, the first tension insulator 81, the second tension insulator 82, and the retaining clamp 84 are connected in advance on the ground. Then, after the first tension insulator 81 is connected to the post fitting 10, the overhead distribution line W is drawn to and held by the retention clamp 83 by using a wire tensioner (not shown). W can be installed on the utility pole P. In addition, after a series of column construction is completed, the retaining clamp 84 is covered with an insulating cover 84c.

  Referring to FIG. 6, a tension insulator 80 and a tension clamp 84 can be connected to the strap 4 and the torsion strap 5 of the post fitting 10, respectively. Then, the overhead distribution line W is retained by winding the bind line 7b around the pin insulator 7p with the overhead distribution line W stretched between the pair of retaining clamps 84 and 84 so as to straddle the arm 70 with a margin. Sorting columns can be arranged according to the columns.

  The mounting bracket 10 according to the embodiment rotates the other ends of the first holding fitting 1 and the second holding fitting 2 so that the first ends of the pair of first holding fitting 1 and the second holding fitting 2 can be opened and closed. When the bolt member 3 is suspended on one end side of the first gripping bracket 1, the strap 4 is coupled to the bolt member 3, and the nut 3 n is fastened to the bolt member 3, the pair of the first gripping bracket 1 and the first gripping bracket 1 The arm bracket 70 can be easily clamped by the two holding fittings 2.

  In the columnar bracket 10 according to the embodiment, the first gripping bracket 1 is provided with a first gripping piece 1c that can be gripped by a gripping tool 92 provided at the tip of the hot stick 9, and the second gripping bracket 2 is provided with a hot Since the second gripping piece 2c that is gripped by the gripping tool 92 provided at the tip end of the stick 9 is provided and can be opened and closed, it can be attached to the arm metal 70 more easily than the conventional post fitting 7.

  The pillar fitting 10 according to the embodiment has a hook-shaped locking piece 121 that can be locked to the shaft portion 71p of the pin insulator 7p on one wing of the long piece 12 so that the pillar fitting 10 is Movement along the longitudinal direction of the brace 70 is prevented. Since the post fitting 10 according to the embodiment does not include the step of removing the cap 72g and the nut from the bolt 71g provided on the insulator 7g, unlike the conventional post fitting 7, the working efficiency can be improved.

  The pillar fitting 10 according to the embodiment has a locking hole 12h opened in a regular square at the end of the long piece 12 of the first gripping fitting 1, and the bolt member 3 is prevented from falling off the locking hole 12h. The hemispherical head 3h and the regular quadrangular columnar neck 3k that is fitted into the locking hole 12h and is prevented from rotating. Therefore, if the long piece 12 is arranged in a substantially horizontal state, the bolt member 3 is vertical. When the nut 3n is screwed onto the bolt member 3, the bolt member 3 is prevented from rotating.

  Further, the columnar bracket 10 according to the embodiment includes a cylindrical portion 41 in which the strap 4 is rotatably connected to the shaft portion 31 of the bolt member 3, a base end portion coupled to the outer periphery of the cylindrical portion 41, and a mounting hole in the distal end portion. 42p, and the bolt member 3 has a flange portion 31f on the shaft portion 31 for preventing the cylindrical portion 41 from dropping off, so that the tension member 80 and the tension clamp 84 are stretched. It is possible to reduce the influence of rolling caused by the wind of the overhead aerial distribution line W.

  Furthermore, in the column fitting 10 according to the embodiment, the notch groove 221 that allows the second holding fitting 2 to enter the threaded portion 311 of the bolt member 3 is opened on the side surface of the long piece 22. Can be easily fastened to the bolt member 3. Further, since the notch groove 221 is closed toward the end of the long piece 22, the threaded portion 311 of the bolt member 3 is against the force of pulling the strap 4 connected to the bolt member 3. It is prevented from falling out.

DESCRIPTION OF SYMBOLS 1 1st holding metal fitting 1c 1st holding piece 2 2nd holding metal fitting 2c 2nd holding piece 3 Bolt member 3n Nut 4 Strap 7p Pin insulator 9 Hot stick 10 Mounted metal fittings (pillar metal fittings of an aerial distribution line)
11.21 Short piece 12.22 Long piece 42p Mounting hole 70 Arm metal 71p Shaft part (Shaft part of pin insulator)
80 Tensile insulator 83/84 Drain clamp 92 Gripping tool 121 Locking piece 311 Threaded portion (threaded portion of bolt member)
W Overhead distribution line

Claims (5)

An overhead power distribution line mounting bracket for connecting a tension insulator that is attached to a brace that fixes a pin insulator and is connected to a retaining clamp that sandwiches the overhead power distribution line,
A pair of first and second gripping brackets, each of which is composed of a short piece and a long piece, each of which is bent at a substantially right angle, so that the ends of the pair of short pieces can be opened and closed with respect to each other. A pair of first gripping brackets and a second gripping bracket capable of closing the pair of long pieces and sandwiching the arm metal;
A bolt member suspended from an end of the long piece of the first gripping bracket;
A strap that is rotatably connected to the bolt member and has an attachment hole at the end for connecting the tension insulator,
A nut that is screwed into a threaded portion of the bolt member and fastens the second gripping bracket to the bolt member;
The first gripping bracket includes a hook-shaped locking piece that can be locked to the shaft portion of the pin lever on one wing of the long piece, and a first gripping tool that can be gripped by a gripping tool provided at the tip of the hot stick. Having one grip piece on the outer surface of the short piece,
The second gripping bracket is a mounting bracket for an aerial distribution line that has a second gripping piece that is held by a gripping tool provided at the tip of a hot stick and that opens and closes the long piece on the outer surface of the long piece. The first gripping fitting has a locking hole opened in a regular square at the end of the long piece,
The bolt member is
A hemispherical head that is prevented from falling off the locking hole;
The overhead bracketing wire mounting bracket according to claim 1, further comprising: a regular quadrangular columnar neck portion that fits into the locking hole and is prevented from rotating. The strap is
A cylindrical portion rotatably connected to the shaft portion of the bolt member;
A base end portion is coupled to the outer periphery of the cylindrical portion, and a band plate portion that opens the attachment hole at a distal end portion, and
The overhead bracketing wire mounting bracket according to claim 1 or 2, wherein the bolt member has a flange portion at a shaft portion for preventing the cylindrical portion from dropping off.   The overhead bracketing wire mounting bracket according to any one of claims 1 to 3, wherein the second gripping fitting has a notch groove that can enter the threaded portion of the bolt member.   The notch groove opens on the side surface of the long piece of the second gripping fitting, and closes toward the end of the long piece so that the threaded portion of the bolt member is prevented from coming off by the long piece. The mounting bracket for an aerial distribution line according to claim 4.

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