JPS644267Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a disconnection wire holding device that can disconnect and hold a distribution line at any location when performing power outage work on overhead distribution lines between utility poles.

Conventional technology In the past, when performing power outage work on power distribution lines, the divisional switches installed on utility poles were opened in advance, and the areas between the switches were left in a power outage state, and work was done to connect the power lines to houses, buildings, factories, etc. It is normal to do the following.

However, if a sectional switch is installed on each utility pole, it is possible to use a voltage-free distribution line limited to the power outage area required for wiring work, but in reality, a sectional switch is installed on each utility pole. Because it is uneconomical to prepare for this, they are installed at long distances, such as at branch points of distribution lines. Therefore, if the sectional switches are opened during power outage construction to create a voltage-free area between the switches, the distance between the switches will be long, making it impossible to supply power to a wide range of customers, resulting in damage to homes, buildings,
This has been a problem since power outages in factories, etc. cause inconvenient shutdowns of various equipment, causing a great deal of inconvenience to customers.

In addition, when disconnecting electric wires at utility poles between sectional switches, the situation is often complicated as multiple distribution lines are connected to the arms at the top of the pole.
There were disadvantages such as the installation of protective gear to work on live wires, which took time and effort to disconnect the wires at the top of the pole, and the sectional switch being located far away, making it difficult to confirm that it was open.

Purpose of the invention This invention is to tighten and hold the wire holders on both sides of the insulated connecting rod at any position of the overhead power distribution line strung between utility poles to disconnect the wire, for example, to disconnect the wire from the nearest section. An object of the present invention is to provide a disconnection wire holding device which can create a voltage-free area between the power supply and the power supply, thereby minimizing the power outage area and reducing the inconvenience to customers. .

Composition of the device The essential requirements of this device are to provide a wire holding part with a retaining groove for inserting and fixing overhead power distribution lines, etc., and to adjust the length of a pair of side plates each having an insertion hole formed on the same axis as the retaining groove. In an embodiment of the wire holding section, one end of the wire holding plate having a wire holding groove is pivoted to be openable and closable, and the other end is bolted to the holding plate. An embodiment of the insulating connecting rod is such that the connecting rod is provided with a threaded portion and the length can be adjusted by changing the screwing position of the lock nut.

Embodiments This invention will be explained based on embodiments shown in the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes a wire holding portion having a retaining groove 2 into which an overhead power distribution line A wired between utility poles B is inserted and fixed, and is provided on a pair of side plates 4, 4.
The wire holding part 1 has a wire holding plate 6 fixed to the side plate 4,
On the retaining plate 6, a pair of wire restraining plates 7, 7, one end supporting part 7a are attached to the side plate 4 and the central supporting part 11, respectively.
The other end of the clamping plate is pivoted between the supporting part and the outer supporting part 12 so that it can be opened and closed, and a clamping groove is provided on the opposing surfaces of the wire holding plate 6 and the wire restraining plate 7. 2
a and 2b, a bolt 8 is provided in the insertion hole 14 at the open end of the wire binding plate 7, and a screw hole 15 in the retaining plate 6 is provided.
The bolt 8 is tightened at the same time. The securing grooves 2a and 2b are provided with unevenness, for example, a screw groove, so that the electric wire can be bited in to some extent in order to securely secure the electric wire. Reference numeral 16 denotes a spring that urges the restraining plate 7 in the opening direction, and is attached to the pivot shaft 13.

The side plate 4 is provided with an insertion hole 3 whose upper part is open on the same axis as the retention grooves 2a and 2b, so that the electric wire A can be inserted into the retention groove and the insertion hole from above.

5 is an insulating connecting rod made of insulating material, and both side plates 4, 4
The connecting rods are arranged in parallel above and below the wires, and the connecting rods have a structure in which the length can be adjusted in order to adjust the position of the wiring, and are connected to the side plates 4, 4. This insulating connecting rod 5 needs to have strength to withstand the tension applied to the electric wire, and holds the separated electric wire while maintaining insulation. The distance between the insulating connecting rods 5, 5 must be dimensioned so as not to interfere with compression tools for cutting and connecting electric wires. For example, in the case of a 7KV distribution line, the spacing is preferably about 20cm.

Further, as a means for adjusting the length of the insulating connecting rod 5, a threaded portion 9 is formed on one side of the connecting rod 5, and a lock nut 1 is formed on one side of the connecting rod 5.
The threaded part 9 is inserted into the mounting hole 17 of the side plate 4 by changing the screwing position of 0, and is fixed with a nut 18, and the length is adjusted by the position of the lock nut. In the embodiment, the threaded portion is provided on one side of the connecting rod 5, but the threaded portion is not limited to this, and it is also possible to provide it on both sides so that the length can be adjusted on both sides.

In addition, the structure of the said electric wire holding part 1 is not limited to the above-mentioned thing. For example, the clamping plate 7 on the wire holding plate 6 may be clamped as one wide piece.

Since this device has the above-mentioned structure, when performing power outage work, a live line work vehicle equipped with an elevator is used to carry out work on the overhead power distribution line A, which is located close to the work area between the section switches (not shown) on utility pole B. Raise the invented disconnection wire holding device, remove the bolts 8 from the holding plates 7, 7 of the wire holding parts 1, 1 on both sides, release them from the holding plates 6, 6, and attach the distribution line A to the holding grooves 2a and 2b. The bolts 8 of the clamping plate 7 are inserted into the screw holes 15 after passing through the holes 3 and 3, and the bolts 8 of the clamping plate 7 are tightened into the screw holes 15, and the clamping grooves 2
a, 2b and hold it parallel to the insulated connecting rod 5, cut the wire between the side plates 4, 4, flip up the wire to complete the disconnection, and connect it to the nearest section switch, for example. Wiring work will be carried out between the two areas as a power outage area.

After completing the wiring work, when connecting the cut wires, adjust the cut wires held on both sides of the insulated connecting rod and fit them together using the insulated connecting rod, directly fit a sleeve etc. into the joint, securely connect, and energize. Do as you like,
Thereafter, the bolts 8 of the wire holder 1 are removed to release the clamping plate 7, the wire holder is removed and separated from the distribution line, and the wire holder is lowered.

Effects of the invention When performing power outage work to connect power distribution lines with houses, buildings, etc., this invention was designed to connect the overhead wires between the sectional switches to the wire holders on both sides of the insulated connecting rod at a position close to the construction site. Since the power outage can be effected by simply disconnecting the wire while it is held in place, the power outage area can be significantly narrowed compared to conventional methods, and the range of customers inconvenienced can be reduced. Furthermore, since the power distribution line can be disconnected at any position, the number of sectional switches installed for power outage work can be reduced, which is economical.

Furthermore, the disconnected wires can be safely held with insulation on both sides by the insulated connection rod, and the disconnected ends of the wires can be easily connected when power outage work is completed, which is convenient.

Further, since the disconnected wire holding device of this invention can be easily attached to and removed from the distribution line using a live line work vehicle, power outage work can be carried out efficiently and safely.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view showing the disconnected wire holding device of this invention, Fig. 2 is a partially cutaway front view of the same, Fig. 3 is an enlarged sectional view taken along the line XX of Fig. 1, and Fig.
The figure is a perspective view of the device in use. A... Overhead distribution line, B... Utility pole, 1... Wire holding part, 2a, 2b... Retention groove, 3... Insertion hole, 4
... Side plate, 5 ... Insulating connection rod, 6 ... Wire holding plate, 7 ... Wire restraint plate, 8 ... Bolt, 9 ... Threaded part, 10 ... Lock nut.

Claims (1)

[Claims for Utility Model Registration] A pair of side plates 4, which are provided with a wire holding portion 1 having a retaining groove for inserting and fixing an overhead power distribution line A, etc., and having an insertion hole 3 formed on the same axis as the retaining groove; 4 are connected by a pair of insulated connecting rods 5 whose lengths can be adjusted. A wire retaining plate 6 having a wire retaining groove 2a is provided on the side plate 4 as the wire retaining portion, and one end of the wire retaining plate 7 having the wire retaining groove 2b provided in the wire retaining plate is pivoted and the other end is fixed. A disconnected wire holding device according to claim 1, which is capable of being opened and closed and can be fastened to a holding plate 6 with bolts 8. The utility model registered as claimed in claim 1, wherein the lock nut 10 which is screwed into the threaded part 9 formed at the end of the insulating connecting rod 5 as a length adjusting means is attached to the side plate 4 by changing the position thereof. Disconnected wire holding device.