JPH11332042A - Link for overhead transmission line and line relocating method for the overhead transmission line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the duration for transmission stop in line relocating work of an overhead transmission line, and conduct relocating work efficiently, even in case of shortage of the length of the line. SOLUTION: On a steel tower 'No. 2' side, line relocating work is simultaneously conducted for old and new lines. With an insulator chain 6 on a temporary steel tower 'temporary No. 2' side kept in a streamer condition, the insulator chain 6 is connected with a line. Therefore, relocating work can be simplified, the duration of transmission stop can be reduced, and compression work on a steel tower can be reduced. Relocation return work required only the removal of additional lines joined with bolts, so that compression work can be dispensed with. Compression work for additional lines can be prepared before the transmission stop, joining work during the stop required joining only with bolts, therefore the duration of work can be reduced, so that linear sleeves and scaffold can be dispensed with, workability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead transmission line connecting bracket and an overhead transmission line transfer method.

[0002]

2. Description of the Related Art When reconstructing an overhead power transmission line tower,
In order to enable power supply even during the construction period, a temporary tower to replace the tower to be rebuilt was constructed adjacent to the tower to be rebuilt, and the wires that passed through the rebuilt tower were transferred to the temporary tower. By rerouting the transmission line, the land for rebuilding work is secured and rebuilding work is being carried out.

[0003] As shown in Fig. 9, a conventional overhead transmission line transfer work involves an old wire (hereinafter referred to as "old wire") 1 and a young wire on a rebuilding tower "No. 2". The electric wire (hereinafter, referred to as “young electric wire”) 2 was separated and separately transferred, and attached to the temporary iron tower “temporary No. 2”. In many cases, a compression clamp 3 is used for attaching the electric wires 1 and 2 to the temporary tower “temporary No. 2”.

Here, when the overhead power transmission line is transferred, the wire length may be insufficient depending on the position of the temporary tower “temporary No. 2”. In this case, a new electric wire is prepared or an insufficient electric wire (interrupted electric wire) 4 is connected to an existing wire by a straight sleeve 5 or the like to cover an electric wire of a required length. FIG. 9 is a conceptual diagram of a conventional overhead transmission line transfer method.

[0005]

However, in the conventional method, since the transfer of the old and young wires is performed separately,
Requires a long time to work. Therefore, the power outage time becomes longer, which hinders stable power supply. In addition, a work scaffold may be required depending on the situation under the line due to the electric wire connection by the straight sleeve. Further, there is a problem that the operation requires advanced technology such as a clamp compression operation on a steel tower.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problem, shorten the power transmission stop time in the overhead transmission line transfer work, and efficiently perform the transfer work even if the wire length is insufficient. It is an object of the present invention to provide an overhead transmission line connecting bracket and a method of transferring an overhead transmission line.

[0007]

In order to achieve the above-mentioned object, a connection fitting for an overhead transmission line according to the present invention comprises two overhead transmission line clamps connected by a connection fitting and a conductor.

The overhead transmission line transfer method according to the present invention is a transfer method for transferring an overhead transmission line from a transfer source support to a transfer destination support. When the old and young wires are not connected, the two wires are connected by an overhead power transmission wire connection fitting consisting of two clamps connected by a connection fitting and a conductor, and then the connected wires are connected. From the support at the transfer source, and connect the interrupting wire of the required length at the support at the transfer destination adjacent to the support at the transfer source to the wire separated by the overhead transmission line connection fitting. The wire is drawn by pulling the electric wire from the support at the transfer destination with a rope and fixing the wire.

In the overhead transmission line transfer method according to the present invention, after connecting the old side and the young side wires with an overhead transmission line connecting bracket composed of a connecting bracket and two clamps connected by a conductor, The connected electric wire is separated from the transfer-source support, and the interrupting wire of the required length is separated by the overhead transmission line connection bracket at the transfer-destination support adjacent to the transfer-source support. This is a wire transfer method in which the wire is pulled back from the support at the transfer destination with a rope and fixed, and the transferred wire is returned to the support at the transfer source. After disconnecting from the support at the wire end, pulling the wire from the support at the transfer destination to the support at the transfer source using a rope, removing the interrupting wire connected at the time of transfer, and then supporting the transfer source The line is returned by fixing to an object.

According to the present invention, the wire transfer operation can be performed at the same time by connecting both wires to the old wire and the young wire using the overhead transmission line connection fitting. By making the insulator string of the support at the transfer destination be in a streamed state, and connecting the electric wire to the insulator string, the transfer work is simplified, the power transmission stop time and the working time can be shortened, and on the steel tower Compression work can be reduced. In particular, in the transfer-returning operation, since only the interrupted electric wire bolted is removed, the necessity of the compression operation is eliminated. In addition, compression of the intrusion wire can be prepared before power transmission is stopped,
Since the connection work during the power transmission stop time is only bolt connection, the work time can be reduced. Further, since a linear sleeve is not required, a work scaffold is not required, and improvement in work efficiency can be expected.

Note that a small pulley is installed on the electric wire on the transmission tower, and a rope or the like is connected to the pulley. It is preferable that the wire transfer operation is performed by pulling the rope and drawing the electric wire to the steel tower at the transfer destination.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a conceptual diagram showing an embodiment of the overhead transmission line transfer method of the present invention.

An overhead transmission line 1 on the younger side is installed between the tower "No. 1" and the tower "No. 2".
o. The overhead transmission line 2 on the old number side is stretched between the “No. 2” and the tower “No. 3”. The tower “No.
A temporary tower “temporary No. 2” is temporarily used near “No. 2” instead of the tower “No. 2”. In order to rebuild the tower “No. 2”, it is necessary to transfer the old and young electric wires 1 and 2 to the temporary tower “temporary No. 2”.

A feature of the present invention is that when the overhead transmission lines 1 and 2 are transferred, the old and young electric wires 1 and 2 are connected to the old transmission tower 1 and the old and old electric wires 1 and 2 while being connected. 2 at the same time and the insulator string 6 of the temporary tower “temporary No. 2” is in a streamed state (only one is connected to the tower and the other is free). If so,
Insufficient electric wires are inserted, but before transfer, a clamp 7 is attached to the end of the inserted electric wire 4 in advance as shown in FIG. 2, and this clamp 7 and the clamp 8 attached to the end of the existing electric wire are connected. The clamps 7 and 8 are connected by bolts or the like with the connecting metal fittings 9 to improve the electrical connection between the clamps 7 and 8.
These are connected by a conductor 10.

FIG. 2 is an external view of a connection fitting for an overhead transmission line according to the present invention.

The overhead transmission line connecting bracket is formed by connecting clamps 7 and 8 of two overhead transmission lines by a connecting bracket and a conductor.

Next, the overhead transmission line transfer method of the present invention will be described. 3 to 8 are operation process diagrams of the overhead transmission line transfer method of the present invention.

First, a description will be given of a wire transfer method for transferring an overhead transmission line from a transfer source support to a transfer destination support.

Steel towers to be rebuilt (transfer source supports)
In "No. 2", the younger side (left side in the figure) is located at a distance of about 2 m from the support point, and the older side (right side in the figure) Hit Cam Along 11 about 5m away from the point, form a semi 12
Remove the clamp from 3. Also, on the tower “No. 3” side, the work of compressing the intrusion wire 4 was performed on the ground, and the tower “No.
On the above, the cam armong 14 is hit, the semi-15 is assembled, and the clamp is removed from the insulator row 16 (FIG. 3).

At the steel tower "No. 3", the clamp 8 of the existing wire and the clamp 7 of the insertion wire 4 are connected by parallel clevis 17 and are made of a soft aluminum stranded wire in which jumper sockets 18 are compressed at both ends in advance. Attach jumper wire 19. The electric wire is taken up by the steel tower “No.
o. The wire is sent out at 3 "(FIG. 4).

At the tower “No. 2”, the old and young clamps 7 and 8 are connected to the parallel clevis 1 in the same manner as the operation shown in FIG.
7 and a jumper wire 19 made of a soft aluminum stranded wire with a jumper socket compressed in advance at both ends is attached (FIG. 5).

Pulley 2 for transfer at steel tower "No. 2"
0 is placed on the electric wire, and the terminal of the rope 21 attached to the pulley is connected to the temporary iron tower (support at the transfer destination) “temporary No.
2 ”. The semi-15 is wound around the tower “No. 3”, the electric wire is stretched, and the cam along 11 is removed from the tower “No. 2” (FIG. 6).

While sending out the electric wire at the tower “No. 3”, the rope 21 is transferred at the temporary tower “temporary No. 2” (FIG. 7).

After the wires arrive at the temporary tower “temporary No. 2”, the wires are tightened at the tower “No.
Then, the wire is put into the suspension clamp 23 in the temporary iron tower “temporary No. 2”, and the streamer insulator 6 is attached to complete the work (FIG. 8).

The above operation is similarly performed for the middle and lower phases of the overhead transmission line group.

After the steel tower “No. 2” has been rebuilt, the electric wires 1 and 2 may be transferred in a procedure reverse to the above-mentioned method.

That is, in order to return the electric wire transferred to the temporary tower “temporary No. 2” to the temporary tower “temporary No. 2”, the transferred electric wire is cut off from the temporary tower “temporary No. 2”. After the electric wire is drawn from the temporary tower “temporary No. 2” to the tower “No. 2”, the intrusion wire 4 connected at the time of the transfer is removed, and then the wire is fixed to the tower “No. 2”. Line return is realized.

With this configuration, it is possible to eliminate the compression work during the stop work, eliminate the compression work of the linear sleeve, and reduce the stop work time in the transfer work of the overhead transmission line.

The connection between the two clamps is as follows.
Instead of both the connection fitting and the conductor, any one may be used as long as it maintains mechanical strength and electrical connection.

[0031]

In summary, according to the present invention, the following excellent effects are exhibited.

[0032] The overhead transmission line connecting bracket and the overhead transmission line transfer line which can shorten the power transmission stop time in the overhead transmission line transfer operation and can efficiently perform the transmission operation even if the wire length is insufficient. The provision of a wire construction method can be realized.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an embodiment of an overhead transmission line transfer method according to the present invention.

FIG. 2 is an external view of a connection fitting for an overhead transmission line according to the present invention.

FIG. 3 is a work process diagram of the overhead transmission line transfer method of the present invention.

FIG. 4 is a work process diagram of the overhead transmission line transfer method of the present invention.

FIG. 5 is a work process diagram of the overhead transmission line transfer method of the present invention.

FIG. 6 is a work process diagram of the overhead transmission line transfer method of the present invention.

FIG. 7 is a work process diagram of the overhead transmission line transfer method of the present invention.

FIG. 8 is a work process diagram of the overhead transmission line transfer method of the present invention.

FIG. 9 is a conceptual diagram of a conventional overhead transmission line transfer method.

[Explanation of symbols]

 1 Younger side wire (overhead transmission line) 2 Older side wire (overhead transmission line) 4 Insertion wire 6, 13, 16 Insulator chain 7, 8 Clamp

Claims (3)

[Claims] 1. A connection fitting for an overhead transmission line, wherein two overhead transmission line clamps are connected by a connection fitting and a conductor. 2. A transfer method for transferring an overhead transmission line from a support at a transfer source to a support at a transfer destination, wherein wires on an old side and a young side of the transfer source support are used. When not connected,
After connecting the two wires with an overhead power transmission wire connecting bracket consisting of two clamps connected by a connecting bracket and a conductor, the connected wire is separated from the transfer source support, and the transfer source support is provided. Connect the interrupted wire of the required length with the support at the transfer destination adjacent to the object to the disconnected wire with the overhead transmission line connection bracket, and pull the wire from the support at the transfer destination with a rope. A method for transferring overhead power transmission lines, wherein the wires are fixed and fixed. 3. The two parts connected by a connection fitting and a conductor.
After connecting the old side and the young side wires with the overhead transmission line connecting bracket composed of the clamps, the connected wires are separated from the transfer source support, and adjacent to the transfer source support. Connect the interrupting wire of the required length at the transfer-destination support to the above-mentioned separated electric wire by the overhead transmission-line connecting bracket, draw the wire from the transfer-destination support with a rope, and fix it. A wire transfer method for returning the wire transferred by the transfer source to the support at the transfer source, wherein the wire transferred is separated from the support at the transfer destination, and the wire is separated from the support at the transfer destination by a rope. After drawing to the support at the transfer source, removing the interrupting wire connected at the time of the transfer, removing the interrupted wire, fixing the transfer wire to the support at the transfer source, and performing the transfer return, Wire transfer method.