JP2021141754A - Overhead line crossing method and overhead line crossing tool - Google Patents

Abstract

To easily cross electrical wires above an overhead line.SOLUTION: An overhead line crossing device 1 includes: a contact part 11 that has an inverted U shape, and which comes into contact with the overhead line on the inner peripheral surface of curved portion of the inverted U shape; and a mounting part 12 to attach electrical wire 19 to one end of inverted U shape of contact part 11. The overhead line crossing device 1 crosses electrical wire 19 above the overhead line.SELECTED DRAWING: Figure 1

Description

The present invention relates to an overhead wire crossing method and an overhead wire crossing tool.

For example, a plurality of overhead wires may be provided in the air so as to cross a road, and a new electric wire may be crossed on the overhead wires. A method is adopted in which one worker moves while placing a new electric wire on the overhead wire.

In general, there is a device for easily collecting a drop cable from the ground by one person without using an aerial work platform (Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-136827

However, when the electric wire is placed on the overhead wire, it may slip due to the weight of the electric wire or may fall due to the wind.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique for easily crossing electric wires above an overhead wire.

One aspect of the overhead wire crossing method of the present invention is an overhead wire crossing method in which electric wires are crossed above an overhead wire by using an overhead wire crossing tool provided with a contact portion having an inverted U shape and a mounting portion for attaching an electric wire. , The step of attaching the electric wire to the attachment part at one end of the inverted U shape of the abutment part, and the attachment part and the electric wire connected from the attachment part from the front side of the overhead wire, the inverted U shape of the abutment part A step of placing an overhead wire crossing tool on the overhead wire and a step of pulling the overhead wire crossing tool placed on the overhead wire to the back side of the overhead wire are provided so that the inner peripheral surface of the curved portion abuts on the overhead wire.

The overhead wire crossing tool of one aspect of the present invention is an overhead wire crossing tool for crossing electric wires above the overhead wire, has an inverted U shape, and forms an overhead wire on the inner peripheral surface of an inverted U-shaped curved portion. A mounting portion for attaching an electric wire is provided at one end of the contact portion and the inverted U-shape of the contact portion.

According to the present invention, it is possible to provide a technique for easily crossing electric wires above an overhead wire.

FIG. 1 is a front view of an overhead wire crossing tool according to an embodiment of the present invention. FIG. 2 is a perspective view of an overhead wire crossing tool according to an embodiment of the present invention. FIG. 3 is a diagram illustrating an overhead wire method according to an embodiment of the present invention (No. 1). FIG. 4 is a diagram illustrating an overhead wire method according to an embodiment of the present invention (No. 2).

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same parts are designated by the same reference numerals and the description thereof will be omitted.

(Overhead wire crossing)
The overhead wire crossing tool 1 according to the embodiment of the present invention crosses the electric wire 19 above the overhead wire. The electric wire 19 is a newly erected electric wire whose at least one end is not installed on a utility pole or the like. One end of the electric wire 19 not installed is attached to the overhead wire crossing tool 1, and the electric wire 19 is crossed with the overhead wire crossing tool 1 above the overhead wire. The overhead wire crossing tool 1 is used, for example, when one worker moves the electric wire 19 while placing the electric wire 19 on the overhead wire. In the embodiment of the present invention, the overhead wire is an electric wire laid in space, for example, a lead-in wire from an electric wire passing between utility poles. In the embodiment of the present invention, the use of the electric wire 19 is not limited.

As shown in FIG. 1, the overhead wire crossing tool 1 according to the embodiment of the present invention includes a contact portion 11, a mounting portion 12, and a locking portion 13.

The contact portion 11 has an inverted U-shape, and abuts on the overhead wire on the inner peripheral surface of the curved portion of the inverted U-shape. As shown in FIGS. 3 and 4, the overhead wire crossing tool 1 is arranged on the overhead wire so that the inner peripheral surface of the inverted U-shaped portion of the contact portion 11 abuts on the overhead wire.

The attachment portion 12 attaches the electric wire 19 to one end of the inverted U-shape of the contact portion 11. The mounting portion 12 is preferably formed so that the electric wire 19 can be detachably attached. In the examples shown in FIGS. 1 and 2, the tape is wound. More specifically, the steel core at the center of the electric wire is wound around the mounting portion 12, and the steel core is further wound around the mounting portion 12 with tape.

The method of attaching the electric wire 19 to the attachment portion 12 does not matter. For example, the electric wire 19 may be wound along one end of the inverted U-shape of the contact portion 11 with tape from above. Further, the electric wire may be connected to one end of the inverted U shape of the contact portion 11. The mounting portion 12 is a clip to which the electric wire 19 can be attached and detached, and a new electric wire may be sandwiched between the clips. Further, a rope-shaped member having a predetermined length may be attached to one end of the inverted U-shape of the contact portion 11, and the electric wire 19 may be connected to the tip of the rope.

The inner peripheral surface of the contact portion 11 is formed of a non-slip member on the overhead wire. When the overhead wire crossing tool 1 is placed on the overhead wire and the inner peripheral surface of the abutting portion 11 abuts on the overhead wire, the inner circumference of the abutting portion 11 is caused by the own weight of the overhead wire crossing tool 1 and the own weight of the electric wire 19 hung on the overhead wire. The surface holds down the overhead wire. At this time, the inner peripheral surface of the contact portion 11 is formed so that the overhead wire crossing tool 1 has a frictional force that does not move on the overhead wire. The frictional force required for the inner peripheral surface of the contact portion 11 is determined by the material of the overhead wire, the inclination angle of the overhead wire, the weight of the overhead wire crossing tool 1 and the electric wire 19 applied to the overhead wire, the natural environment such as wind, and the like.

The locking portion 13 is formed so as to be lockable with a rod-shaped tool. The locking portion 13 is a portion where a rod-shaped tool that lifts the overhead wire crossing tool 1 locks. In the overhead wire crossing tool 1 shown in FIGS. 1 and 2, the locking portion 13 is formed of a wire or the like and has a convex shape. By connecting the lower end of the locking portion 13 to the outer peripheral surface of the contact portion 11 with tape or the like, a ring is formed by the locking portion 13 and the outer peripheral surface of the contact portion 11. By inserting the tip of the rod-shaped tool into this ring, the overhead wire crossing tool 1 can be lifted and moved.

The rod-shaped tool that lifts the overhead wire crossing tool 1 has a length that allows the tip of the rod-shaped tool to reach the locking portion 13 of the overhead wire crossing tool 1 placed on the overhead wire when the worker lifts it. Further, the tip of the rod-shaped tool is formed so as to lock the locking portion 13. For example, an annular member that can be opened and closed is formed at the tip of the rod-shaped tool by operating it at the operator's hand. With the annular member open, the tip of the rod-shaped tool is passed through the ring formed by the locking portion 13, and then the annular member is closed, so that the overhead wire crossing tool 1 can be lifted by the rod-shaped tool. Further, if the shape of the tip of the rod-shaped tool for locking the locking portion 13 is a mere "V" shape or the like and it is possible to lift and move the overhead wire crossing tool 1, what kind of shape is used? It may be in shape.

In the embodiment of the present invention, the overhead wire crossing tool 1 has an inverted U shape, but is not limited to this. For example, the mounting portion 12 may be formed at one end of the inverted U shape, and the other end may be formed longer. The portion having one end formed long becomes a weight, and it becomes easy to balance with the weight of the electric wire 19 attached to the attachment portion 12.

A case where the electric wire 19 is crossed with the overhead wire by using the overhead wire crossing tool 1 will be described with reference to FIGS. 3 and 4. In the examples shown in FIGS. 3 and 4, the overhead wires that the overhead wire crossing tool 1 intersects are the lead-in wires 22, 23, and 24 that are drawn into each house or the like from the electric wire 21 that is passed between the utility poles 20. In the traveling direction shown in FIGS. 3 and 4, specifically, in the order of the lead-in wires 22, 23, and 24, the electric wires 19 are crossed above these lead-in wires, and the electric wires are drawn from the front of the lead-in wire 22 to the lead-in wire 24. I will explain the case of passing it to the back of. The electric wire 19 is not erected in any of them yet, and is newly erected after being crossed above the drop line.

First, the electric wire 19 is attached to the attachment portion 12 at one end of the inverted U-shape of the contact portion 11. For example, the worker is located on the ground on the labor side of the drop line 22. The worker holds the attachment portion 12 so as to be located on the front side with respect to the traveling direction, and attaches the electric wire 19 to the attachment portion 12.

Next, as shown in FIG. 3, the worker sees the mounting portion 12 and the electric wire 19 connected from the mounting portion 12 from the front side of the lead-in wire 22 (overhead wire) to the inverted U-shaped curved portion of the contact portion 11. The overhead wire crossing tool 1 is placed on the lead-in wire 22 so that the inner peripheral surface of the lead-in wire 22 abuts on the lead-in wire 22. At this time, the worker hooks the locking portion 13 with a rod-shaped tool and places the overhead wire crossing tool 1 on the lead-in wire 22.

Next, the worker pulls up the overhead wire crossing tool 1 placed on the service line 22 to the back side of the service line 22. At this time, the worker hooks the locking portion 13 with a rod-shaped tool and pulls up the overhead wire crossing tool 1 placed on the lead-in wire 22. After that, as shown in FIG. 4, the worker attaches the overhead wire crossing tool to the lead-in wire 23 so that the inner peripheral surface of the inverted U-shaped curved portion of the contact portion 11 of the overhead wire crossing tool 1 abuts on the lead-in wire 23. Put one. At this time, if the worker is located on the ground between the service line 22 and the service line 23, the worker can easily place the overhead wire crossing tool 1 placed on the service line 22 on the service line 23.

The same process is repeated, and the overhead wire crossing tool 1 placed on the drop line 23 is placed on the drop line 24. By pulling up the lead-in wire 24 from the back side of the lead-in wire 24, the electric wire 19 can be crossed above the lead-in wires 22, 23 and 24.

In the embodiment of the present invention, in the overhead wire crossing tool 1, the abutting portion 11 has an inverted U shape, abuts on the overhead wire on the inner peripheral surface of the curved portion of the inverted U shape, and the inverted U of the abutting portion 11 An electric wire 19 is attached to one end of the character shape. As a result, one worker can cross the electric wires 19 above the plurality of overhead wires while one worker puts the overhead wire crossing tool 1 on the overhead wire so that the contact portion 11 abuts on the overhead wire. ..

Further, since the contact portion 11 has an inverted U shape, even if the overhead wire crossing tool 1 moves in the circumferential direction (left-right direction in FIG. 1) on the overhead wire, the overhead wire crossing tool 1 does not easily fall from the overhead wire and is stable. Can be kept.

Further, in a situation where the overhead wire crossing tool 1 is placed on the overhead wire and the inner peripheral surface abuts on the overhead wire, the inner peripheral surface of the contact portion 11 is formed of a member that is not slippery on the overhead wire. As a result, it is possible to avoid a situation in which the overhead wire crossing tool 1 is hard to slip when placed on the overhead wire, and the overhead wire crossing tool 1 starts to slide on the overhead wire and moves in an unexpected direction.

Further, the overhead wire crossing tool 1 includes a locking portion 13 that can be locked by a rod-shaped tool. As a result, the overhead wire crossing tool 1 can be safely moved without lifting the contact portion 11 in contact with the overhead wire.

The present invention is not limited to the above embodiment, and many modifications can be made within the scope of the gist thereof.

1 Overhead wire crossing tool 11 Contact part 12 Mounting part 13 Locking part 19, 21 Electric wire 20 Utility pole 22, 23, 24 Leading wire

Claims (5)

This is an overhead wire crossing method in which the electric wires are crossed above the overhead wire by using an overhead wire crossing tool having an inverted U-shaped contact portion and a mounting portion for attaching an electric wire.
A step of attaching the electric wire to the attachment portion at one end of the inverted U-shape of the contact portion,
The mounting portion and the electric wire connected from the mounting portion are attached to the overhead wire from the front side of the overhead wire so that the inner peripheral surface of the inverted U-shaped curved portion of the contact portion abuts on the overhead wire. The step of placing the overhead wire crossing tool and
An overhead wire crossing method including a step of pulling up the overhead wire crossing tool placed on the overhead wire to the back side of the overhead wire. The overhead wire crossing further comprises a locking portion that can be locked with a rod-shaped tool.
In the placing step, the locking portion is hooked with the rod-shaped tool, and the overhead wire crossing tool is placed on the overhead wire.
The overhead wire crossing method according to claim 1, wherein in the pulling step, the locking portion is hooked by the rod-shaped tool to pull up the overhead wire crossing tool placed on the overhead wire. It is an overhead wire crossing tool for crossing electric wires above the overhead wire.
An abutting portion having an inverted U shape and abutting on the overhead wire on the inner peripheral surface of the inverted U-shaped curved portion,
An overhead wire crossing tool having a mounting portion for mounting the electric wire at one end of the inverted U-shaped contact portion. The third aspect of claim 3, wherein when the overhead wire crossing tool is placed on the overhead wire and the inner peripheral surface abuts on the overhead wire, the inner peripheral surface of the contact portion is formed of a non-slip member on the overhead wire. Overhead wire crossing tool. The overhead wire crossing tool according to claim 3 or 4, further comprising a locking portion that can be locked with a rod-shaped tool.

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