JPS6036994Y2 - Jumper wire reinforcement device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a jumper wire reinforcing device for electrically connecting two power transmission line main lines, each of which is tension-supported on a steel tower via a tie clamp, to each other.

Conventionally, as shown in Fig. 1, as a reinforcing device for preventing lateral vibration of jumper wires, a reinforcing body 2 made of a rod-shaped body such as a stranded wire, a rod, or a tube is installed along a jumper wire 1 almost parallel to it. The reinforcing body 2 and the jumper wire 1 are connected by spacers 5 arranged at intervals in the longitudinal direction, and the upper end of the reinforcing body 2 is connected to the tensile insulator chain 6 and the main wire 7 with a retaining clamp. 3 is fixed to a support fitting 8 such as a yoke between the 3 and 3. In the case of a single conductor line, there is no suitable support fitting (yoke) that can fix the terminal part of the reinforcing body 2 between the conductor retaining clamp and the insulator chain. A problem arises in that the reinforcing body 2 cannot be attached to jumper wires on overhead power transmission lines.

The object of this invention is to provide a jumper wire reinforcing device that advantageously solves the above-mentioned problems.

Next, this invention will be explained in detail using illustrated examples.

Figures 2 and 3 show an embodiment of this invention, in which the end of the main power transmission line 7 made of a single conductor is inserted into the aluminum sleeve part 4 of the retaining clamp 3 and fixed by crimping. In addition, the restraining clamp 3 is fixed to the tower arm 9 via a series of tension insulators 6, so that the power transmission line main line 7 is tension-supported to the tower 10, and the end portion of the jumper wire 1 made of stranded wires is fixed to the tower arm 9. The socket 11 crimped to the terminal clamp 3 is fixed to the lug portion 12 of the retaining clamp 3, and the power transmission line main lines 7 on both sides of the tower 10 are electrically connected to each other via the jumper wire 1 to form a jumper device. .

In this jumper device, semicircular gripping grooves 13A and 13B are formed on the inner surface of the upper end of the reinforcing body 2, which is a rod-like body for preventing lateral vibrations, etc. of the jumper wire 1. A pair of clamp pieces 15A and 15B that are connected to each other by a pivot 14 so as to be openable and closable.
A reinforcing body end fitting 16 having a hexagonal compressed cross section of the aluminum sleeve portion 4 of the retaining clamp 3 is crimped, while the outer peripheral cross section is substantially shaped into the semicircular gripping groove 13A, 13B is fitted with an aluminum vertically split collar 17 for changing the cross-sectional shape to a circular shape that conforms to 13B, and the above-mentioned 1
The pair of clamp pieces 15A and 15B are tightened and fixed using fastening members 18 such as bolts and nuts, and the upper end of the reinforcing body 2 is connected to the aluminum sleeve of the retaining clamp 3 via the reinforcing body terminal fitting 16. The reinforcing body 2 is fixedly attached to the part 4, and the entire length of the reinforcing body 2 is extended substantially parallel to the jumper wire 1, and furthermore, both the reinforcing body 2 and the jumper wire 1 are
The jumper reinforcing device of this invention is constructed by connecting them to each other by a large number of spacers 5 arranged at intervals in the longitudinal direction.

In this case, the reinforcing body end fitting 16 attached to the upper end of the reinforcing body 2 is attached to the aluminum stranded wire of the main power transmission line 7 and the aluminum sleeve with respect to the copper core (not shown) in the main power transmission line 7. 4 and the vertically divided aluminum collar 17, and the external force that acts on the fixed portion between the upper end of the reinforcing body 2 and the aluminum sleeve part 4 is mainly applied to the reinforcing body 2.
Since the force is in the lateral direction due to the lateral vibration of the reinforcing body 2, the mounting strength of the upper end of the reinforcing body 2 is sufficient.

In addition, as in the embodiment shown in FIG. 3, when a pair of clamp pieces 15A and 15B are tightened and fixed on the aluminum sleeve part 4 with an aluminum vertically dividing collar 17 interposed therebetween, This has the advantage that the reinforcing body end fitting 16 can be easily attached and fixed to the aluminum sleeve portion 4 having various sizes and external cross-sectional shapes by simply replacing the vertically dividing aluminum collar 17. It will be done.

According to this invention, there is only one insulator link in the tension section, and there is no support fitting for attaching the reinforcing body between the insulator link and the tie clamp 3 that connects the main power transmission line 7. At the tension support part of the power transmission line, the upper end of the reinforcing body 2 attached along the jumper wire 1 is fixed to the aluminum sleeve 4 of the retention clamp 3, so that the retention clamp 3 and the tension insulator chain 6 are fixed. The reinforcement body 2 can be easily attached to a jumper wire in a tension-resistant section of a main power transmission line where there is no suitable support fitting such as a yoke that can fix the terminal part of the reinforcement body 2 between the Effects can be obtained.

[Brief explanation of the drawing]

Figure 1 is a side view of a conventional jumper wire reinforcing device;
The figure is a side view showing an example of the jumper wire reinforcing device according to this invention, and FIG. 3 is an enlarged sectional view taken along the line A--A in FIG. 2. In the figure, 1 is a jumper wire, 2 is a reinforcing body, 3 is a retaining clamp, 4 is an aluminum sleeve part, 5 is a spacer, 6 is a tension insulator chain, 7 is a power transmission line main line, 13A, 13B are semicircular grip grooves, 15A and 15B are clamp pieces, 16 is a reinforcing body end fitting, and 17 is an aluminum vertically split collar.

Claims (1)

[Scope of utility model registration request] A tension support part of an overhead power transmission line in which there is only one insulator link in the tension part, and a support fitting for attaching a reinforcing body is not provided between the insulator link and the restraining clamp 3 that connects the power transmission line main line 7. A jumper wire reinforcing device characterized in that an upper end portion of a reinforcing body 2 attached along the jumper wire 1 is fixed to an aluminum sleeve portion 4 of a retaining clamp 3.