JP5908525B2 - Tip tool for indirect hot wire - Google Patents

Description

  The present invention relates to an indirect live wire end tool attached to the end of an indirect live line tool.

  Conventionally, connection work of high-voltage underline wires is performed by at least two workers. Specifically, (i) First, the core wire exposed by peeling off the coating of one of the wires is inserted into one end of the connection sleeve, and the insertion portion is compressed and fixed with compression pliers or the like. (Ii) After that, the other electric wire and the one electric wire to which the connection sleeve is attached are respectively brought close to each other with an insulating jacket, and the exposed core wire is peeled off from the end portion of the other electric wire to connect the other electric wire to the other of the connection sleeve. It is inserted at the end, and one worker holds the state. (Iii) Then, another worker compresses the vicinity of the other end of the connection sleeve into which the core wire of the other electric wire is inserted with a compression pliers.

  Here, as described in Patent Document 1 described below, the above-described insulating Ytco is configured with, for example, an insulating rod (main shaft) having a required length and a gripping portion including a pair of arms that can be contacted and separated. By using such an indirect hot wire tool, it is possible to perform the above operation while maintaining a sufficient distance from the electric wire without directly touching the electric wire (see Patent Document 1).

JP 2000-102125 A

  However, in the above-described conventional work, since the worker must have two insulated jackets alone, the burden on the operator's arm is heavy, and if the balance between the left and right insulated jackets is lost, the wire from the connection sleeve May come off.

  Further, if the balance between the left and right insulating jackets is lost, the wires in the connection sleeve may move, resulting in poor compression. When a compression failure occurs, it is necessary to remove the portion, strip off the wire coating again, and connect to the sleeve. When the high-voltage underline is shortened, the length necessary for connection cannot be secured. There is an inconvenience that the work involving the replacement of the high-voltage underline has to be performed and the power outage time becomes long.

In addition, if the electric wire comes out of the connection sleeve and the electric power supply side electric wire comes into contact with another, there is a concern that a ground fault or a short-circuiting accident may occur and a power failure may occur.
In particular, when the wind is strong, the burden on the operator to hold the insulating jacket becomes large, and the above-described problem is likely to occur due to the balance between the left and right insulating jackets being lost.

  In addition, when working on a utility pole, the working space is limited, so it is easy for other workers to compress while holding the insulation jacket in each of the left and right hands so that the wires do not come out of the connection sleeve. However, it is difficult to change the compression position, and there is a disadvantage that the compression work is difficult and the work takes a long time.

  This invention is made in view of the situation which concerns, and provides the tip tool for indirect hot-wire which can perform the connection operation | work of an electric wire, without one worker having two insulation screws. Is the main issue.

To achieve the above object, an indirect live wire tip tool according to the present invention includes a pair of attachment portions to which a pair of grip portions of an indirect live wire gripping tool can be attached, and respective tips of the pair of attachment portions. And a pair of rod-shaped portions formed in a rod shape that moves integrally with the mounting portion, and attached to both ends of the pair of rod-shaped portions, and the base end portion rotates with respect to one rod-shaped portion A first holding piece that can be attached and a second holding piece whose base end portion is attached to be rotatable with respect to the other rod-like portion are connected to each other so as to be rotatable. And a pair of sandwiched portions.
Therefore, the operator can open and close the pair of holding parts by attaching the insulating jacket to the mounting part and perform the opening / closing operation, and can hold the respective electric wires connected by the pair of holding parts. Thus, it becomes possible for an operator to pinch an electric wire without having two insulated screws alone.

In addition, the first sandwiching piece is divided into two forks, a gap is formed between them, and a sandwiching forming part for receiving the electric wire is formed at the tip, and the second sandwiching piece is formed in the gap between the first sandwiching pieces. A sandwiching portion that is inserted and receives an electric wire at the distal end portion is formed, and the first sandwiching piece and the second sandwiching piece face each other with the sandwiching formation portion facing each other, and the proximal end side of these sandwiching formation portions And may be connected so as to be rotatable.
Thus, it becomes possible to clamp an electric wire more stably by connecting both clamping pieces.

Each of the sandwiching portions of the first sandwiching piece and the second sandwiching piece may be configured by bending or bending the tip of the sandwiching piece.
Thus, it becomes possible to clamp an electric wire more reliably by comprising a clamping formation part.

The clamping forming portion of the first clamping piece and the clamping forming portion of the second clamping piece may be knurled on the surface that comes into contact with the electric wire.
By performing knurling on the surfaces of the both sandwiching portions that are in contact with the electric wires, it is possible to play a role of preventing slipping when the electric wires are held.

As described above, according to the tip tool for indirect hot wire according to the present invention, two electric wires to be connected with one tool for indirect hot wire can be gripped at the same time. It is possible to grip two electric wires without having two indirect live wire gripping tools, and the labor of the operator can be greatly reduced. In addition, it is not necessary to balance the positions of the two electric wires to be connected (left and right balance), the connection work can be easily performed, and the electric wires can be prevented from coming off from the connection sleeve. Can be secured.
In this way, since it is possible to work without using two indirect live-line gripping tools, in addition to reducing the physical burden on the operator, the work can be performed even if it is not a skilled worker. This makes it possible to improve work efficiency.
In addition, since it is possible to easily change the compression position in a direction in which other workers can easily compress, it is possible to reduce the work time of the compression work, that is, the power failure time.

FIG. 1 is a perspective view showing the whole of the indirect hot wire tip tool of the present invention. FIG. 2 is a perspective view showing a case where an electric wire is gripped by using the indirect live wire tip tool of the present invention. FIG. 3 is an enlarged sectional view of the tip fixing means. FIG. 4 is a perspective view of the insulating jacket. FIG. 5 is a conceptual diagram showing an outline of connecting electric wires using the indirect hot wire tip tool of the present invention.

Hereinafter, an indirect hot wire tip tool according to the present invention will be described with reference to the drawings.
1 and 2, an indirect live wire tip tool 1 includes a pair of attachment portions 3 a and 3 b that can be attached to grip pieces 21 a and 21 b at the tip portion of an indirect live wire gripping tool 2 (hereinafter referred to as insulating YATCO). A pair of rod-like portions 5a and 5b formed in a rod shape provided at the respective distal ends of the pair of attachment portions 3a and 3b and moving integrally with the attachment portions 3a and 3b, and a pair of rod-like portions 5a and 5b It has a pair of clamping parts 6a and 6b that are attached to both ends and clamp the electric wires 4a and 4b to be connected.

  The attachment portions 3a and 3b are formed downward from substantially the center of the rod-like portions 5a and 5b, and are configured to allow insertion of the distal end portion of the indirect live tool, and distal end insertion portions 31a and 31b. Tip fixing means 32a and 32b are provided for fixing the gripping pieces 21a and 21b at the tip of the insulating jacket 2 inserted into the portions 31a and 31b.

  The distal end insertion portions 31a and 31b have an insertion space 34 configured to allow the gripping pieces 21a and 21b at the distal end portion of the insulating jacket 2 to be inserted, and a part of the distal end fixing means 32a and 32b protrudes into the insertion space 34. It is configured to be retired.

  As shown in FIGS. 3 and 4, the tip fixing means 32 a and 32 b include an engaging portion 33 that engages with a recess 23 formed in the gripping pieces 21 a and 21 b at the tip portion of the insulating jacket 2. Is configured such that it can be withdrawn and retracted into the insertion space 34 of the distal end insertion portions 31a and 31b.

Specifically, a hollow boss 35 is fixed to the upper surface of the tip fixing means 32a, 32b by welding, and an engaging portion 33 is slidably supported on the boss 35.
An insertion hole 36 is formed in the head of the boss 35, and the insertion hole 36 is also formed in a base portion located directly below the insertion hole 36.
The engaging portion 33 includes a stopper 37 that protrudes outward from the outer peripheral surface inside the boss 35. A coil spring 38 is arranged between the head inner surface of the boss 35 and the stopper 37.

Therefore, the engaging portion 33 is urged by the extension force of the coil spring 38 in a direction in which the engaging portion 33 protrudes into the insertion space 34 of the base portion until the top portion 33a contacts the head portion of the boss 35.
Then, the tip of the engaging portion 33 can be retracted from the recess 23 by picking and pulling the top portion 33a.

  The rod-like portions 5a and 5b are formed in a substantially rectangular parallelepiped shape in the wiring direction of the electric wires 4a and 4b with the tips of the attachment portions 3a and 3b as the center, and one clamping portion on one end side (the end portion on the electric wire 4a side) 6a is provided, and the other clamping portion 6b is provided on the other end side (the end portion on the electric wire 4b side).

  Further, the full length of the rod-like portions 5a and 5b is formed so as to be able to clamp the portions where the coverings 41a and 41b of the respective electric wires 4a and 4b to which the pair of clamping portions 6a and 6b are connected are covered. That is, the rod-shaped portions 5a and 5b are formed longer than the portions 42a and 42b from which the coatings of both the electric wires 4a and 4b are peeled off. For example, when the connection sleeve 7 has a length of about 5 cm, The total length of the rod-like parts 5a, 5b is preferably 10 cm (twice the length of the connection sleeve 7) or more.

  The sandwiching portions 6a and 6b have a first sandwiching piece 61a whose base end portion is rotatably attached to one of the rod-like portions 5a (attached to the fixed gripping piece 21a side of the insulating jacket 2), A base end portion is rotatably attached to the other rod-like portion 5b (attached to the movable gripping piece 21b side of the insulating jacket 2) and a second sandwiching piece 61b is rotated at an intermediate portion of each other. It is configured to be connected.

  Specifically, the first sandwiching piece 61a and the second sandwiching piece 61b are sandwiched by forming sandwiching portions 62a and 62b, which will be described later, formed at the tips of the sandwiching pieces 61a and 61b. The parts 62a and 62b are connected so as to be rotatable on the base end side.

  At the tip of the first clamping piece 61a, a gap 63 is formed between the two, and a fixed-side clamping forming portion 62a formed by bending inward in the clamping direction is provided.

  The distal end of the second clamping piece 61b is provided with a movable side clamping forming portion 62b that is curved in a single arc shape, and its width H is formed narrower than the width M of the gap 63. Yes.

  In addition, as for both clamping formation parts 62a and 62b, the unevenness | corrugation 62c and 62d which play a role as a slip stopper when the electric wires 4a and 4b are clamped are formed in the surface contact | abutted with the electric wires 4a and 4b. It has been subjected.

  Further, the second clamping piece 61b is inserted into the gap 63 of the first clamping piece 61a, and the movable side clamping forming part 62b is rotated around the position where both the clamping pieces 61a and 61b intersect with each other. The clamping pieces 61a and 61b are fixed so as to be separable.

  Both sandwiching pieces 61a and 61b are formed so that the distance L between the base ends of both sandwiching forming portions 62a and 62b and the upper surfaces of the rod-like portions 5a and 5b is substantially equal to or longer than the entire length S of both sandwiching forming portions. Yes. Therefore, a work space K into which the compression tool can be inserted is formed between the electric wires 4a and 4b and the upper surfaces of the rod-like portions 5a and 5b.

  Here, as in the above example, when the total length of the rod-shaped portions 5a and 5b is about 10 cm, the length L between the base ends of the sandwiching portions 62a and 62b and the upper surfaces of the rod-shaped portions 5a and 5b. Is preferably about 15 cm (1.5 times the total length of the rod-like portions 5a and 5b).

A method of connecting the electric wires 4a and 4b to be connected using the insulating Yatco 2 described above will be described.
First, as shown in (1) in the figure, the core wire of the load-side electric wire 4b to be connected is inserted into the connection sleeve 7 and compressed with compression pliers. Next, as shown in (2) in the figure, the core wire of the electric wire 4a on the power source side and the electric wire 4b to which the connection sleeve 7 is attached are gripped and brought close to each other by the insulating jacket 2, and the electric wire 4a is connected to the other end of the connection sleeve 7. insert.

Then, as shown in (3) in the figure, the indirect hot wire tip tool 1 is attached to the gripping pieces 21a, 21b at the tip of the insulating jacket 2 while maintaining the state where the electric wire 4a is inserted into the connection sleeve 7. The operation unit 22 is operated so as to close the insulating jacket 2 (the tips are close to each other) by aligning the positions of the clamping parts 6a and 6b with the positions where the parts 41a and 41b of the electric wires 4a and 4b can be clamped. Then, the electric wires 4a and 4b are clamped.
Furthermore, as shown to (5) in a figure, another operator compresses the electric wire 4a with the compression pliers 8, and connects both electric wires 4a and 4b.

  In the present embodiment, the shape of the fixed-side clamping formation portion 62a of the first clamping piece 61a is bifurcated, and the shape of the movable-side clamping formation portion 62b of the second clamping piece 61b is a single arc shape. Although it implemented, it is not limited to this, For example, you may implement by forming both the clamping formation parts 62a and 62b in one arc shape.

  As described above, according to the tip tool 1 for indirect hot wire according to the present invention, the two electric wires 4a and 4b to be connected by the single insulating jacket 2 can be gripped at the same time. It is not necessary to balance the positions of the electric wires 4a and 4b (left and right balance), and the connection work can be easily performed. Therefore, since it is possible to prevent the electric wires 4a and 4b from coming off from the connection sleeve 7, work safety can be ensured.

In this way, since it is possible to work without using the two insulating Yatco 2, in addition to reducing the physical burden on the operator, it is possible to work without a skilled worker, Work efficiency can be improved.
In addition, since it is possible to easily change the compression position in a direction in which other workers can easily compress, it is possible to reduce the work time of the compression work, that is, the power failure time.

DESCRIPTION OF SYMBOLS 1 Tip tool for indirect hot wire 2 Gripping tool for indirect hot wire 3a, 3b Mounting part 4a Electric wire (load side)
4b Electric wire (power supply side)
5a, 5b Bar-shaped part 6a, 6b Clamping part 61a, 61b Clamping piece 62a, 62b Clamping formation part

Claims (4)

A pair of mounting portions to which a pair of gripping portions of the indirect live wire gripping tool can be mounted;
A pair of rod-shaped portions provided in respective tip portions of the pair of mounting portions and formed in a rod shape that moves integrally with the mounting portion;
A first sandwiching piece attached to both ends of the pair of rod-like portions and having a base end portion pivotably attached to one rod-like portion, and a base end portion pivoting to the other rod-like portion. A pair of sandwiching portions configured to be connected to each other so that the second sandwiching pieces that are attached to each other are pivotable at each other;
A tip tool for indirect hot wire, comprising:   The first holding piece is divided into two forks, a gap is formed between them, and a holding forming part for receiving an electric wire is formed at the tip, and the second holding piece is formed in the gap between the first holding pieces. A sandwiching portion that is inserted and receives an electric wire at the distal end portion is formed, and the first sandwiching piece and the second sandwiching piece face each other with the sandwiching formation portion facing each other, and the proximal end side of these sandwiching formation portions The indirect hot wire tip tool according to claim 1, wherein the tip tool is connected in a rotatable manner.   3. The indirect hot wire according to claim 2, wherein each of the sandwiching portions of the first sandwiching piece and the second sandwiching piece is formed by bending or bending a tip portion of the sandwiching piece. Tip tool.   4. The indirect activation according to claim 2, wherein the nipping formation portion of the first holding piece and the nipping formation portion of the second holding piece are knurled on a surface in contact with the electric wire. 5. Tip tool for wire.

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