JPS5833621Y2 - Yoke for three conductors - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a triangularly arranged three-conductor yoke used in power generation and substations.

Conventionally, the three-conductor yoke that holds the conductors arranged in a triangular shape shortens the length of the insulators, as shown in Figure 1.
The three retaining portions 1a of the yoke 1 were integrally constructed.

However, if there is a cutting error when cutting the conductor to hold the conductor 2 in place, there will be a tension imbalance between the lower two conductor 2 wires, causing the device to twist. In order to correct this, it was necessary to reduce the cutting error of the conductor and spend a long time on the adjustment work.

In the figure, 3 is a connecting metal fitting, and 4 is an insulator chain.

This invention was devised to solve the above-mentioned drawbacks without changing the length of the insulators. It is an object of the present invention to provide a three-conductor yoke that can prevent twisting of the device and simplify adjustment work for conductor cutting errors.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. A retaining hole 6 is provided at one end of the retaining yoke body 5 for retaining the upper conductor 2 of the three conductors arranged in a triangular shape. A clevis-like yoke connecting part 9 having a yoke connecting hole 8 is provided at the other end, and the yoke connecting hole 8 is positioned closer to the insulator chain 4 than the retaining hole 6 of the retaining part 7. It is set back by a distance l.

This distance l is set within a range where the upper line jumper wire 2a does not contact the balance yoke 12, and the horizontal distance from the yoke connection hole 8 in the balance yoke 12 to the conductor side tip of the balance yoke 12 is L, and the upper line If the horizontal distance from the jumper wire 2a to the retaining hole 6 is X, then by ensuring a distance of 5 mm or more from the tip of the conductor side of the balance yoke 12 to the upper wire jumper wire 2a, relative displacement due to external forces such as wind pressure, etc. Contact factors caused by manufacturing errors in connection fittings 3 have been eliminated, and the balance yoke 12
It has been confirmed through experiments that there is no contact between the jumper wire 2a and the jumper wire 2a.

Therefore, the horizontal distance l from the yoke connecting hole 8 to the retaining hole 6
is set within a range that satisfies l≧L−X+5 mm.

Further, an insulator connecting part 11 having an insulator connecting hole 10 is provided at the back of the retaining work body 5 between the retaining part 7 and the yoke connecting part 9, and the remaining lower two conductors 2 are retained at both ends. A balance yoke 12 is rotatably connected to a yoke connecting portion 9 by bolts 13 and nuts 14.

In addition, the insulator connecting portion 11 is located at a position where the moment acting on each conductor tension is balanced, as shown in FIG.
= (P2+P3) Provide at a position that satisfies B.

In addition, Pl, P2. P3 is the tension of each conductor 2. Next, in the one shown in FIG. 5, the insulator connecting portion 11 has a clevis shape, and has a structure suitable for connecting to a two-row insulator device as shown in FIG. 6 via a yoke 15. , the other configuration is the same as that shown in FIG.

Further, as shown in FIG. 7, a plate-shaped insulator connecting part 11 having an insulator connecting hole 10 is extended to both left and right sides of the shoe-shaped retaining yoke body 5 to attach two insulator chains 4, and is integrated. It was formed.

In addition, the balance yoke shown in FIG.
7, and also the adjustment bolt 1 at the retaining part 6.
6.

In the above embodiment, the lower two conductors 2 are connected to the balance yoke 1.
Although the two conductors 2 held together by the horizontal yoke 2 are shown, the two conductors 2 held down by the balance yoke 12 may be two diagonal lines, or the two conductors 2 may be arranged vertically.

Further, when the conductors 2 are arranged in an inverted triangular arrangement as shown in FIG. 9, the upper two conductors 2 may be held together by the balance yoke 12.

Since the device of the present invention is configured as described above, even if an unbalance in tension occurs between the two conductor wires, the tension balance between the two conductors held by the balance yoke is maintained by the rotation of the balance yoke. This eliminates twisting of the device due to unbalanced conductor tension.

In addition to the above effects, since the attachment point of the balance yoke to which the two conductors are attached is partially shifted toward the insulator chain side from the attachment point of the other single conductor by a distance l≧L−X+5mm, can prevent the jumper wire from coming into contact with the balance yoke.

According to the present invention, twisting of the device due to unbalanced tension between two wires can be prevented without changing the length of the insulator from the conventional device, and the error in cutting the conductor can be prevented. Since the adjustment work can be simplified, the present invention has excellent practical effects.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the conventional yoke for three conductors in use, Figure 2 is a perspective view of the yoke for three conductors of the present invention, and Figure 3 shows the yoke for three conductors in Figure 2 in use. Perspective view, 4th
The figure is an X-arrow view of the yoke for three conductors shown in Fig. 3, Fig. 5 is a perspective view showing another embodiment of the present invention, and Fig. 6 shows the state in which the yoke for three conductors shown in Fig. 5 is used. 7 and 8 are perspective views showing various embodiments of the present invention, and FIG. 9 is a sectional view showing another arrangement of three conductors. 2...Conductor, 5...Retaining yoke body, 6
...Retaining hole, 7...Retaining part, 8...
...Yoke connection hole, 9...Yoke connection part, 1
0...Insulator connection hole, 11...Insulator connection part, 12...Balance yoke.

Claims (1)

[Scope of utility model registration request] 1. A retaining portion 7 having a retaining hole 6 for retaining one conductor 2 of the three conductors arranged in a triangular shape is provided at one end of the retaining yoke body 5, and a clevis-shaped yoke connection having a yoke connecting hole 8 is provided at the other end. A section 9 is provided, and the yoke connecting hole 8 is spaced from the retaining hole 6 of the retaining section 7 by a predetermined distance l≧L-X+5 mm.
However, L: Horizontal distance from yoke connection hole 8 to retaining hole 6, L: Horizontal distance from yoke connection hole 8 to the tip of balance yoke 12 on the conductor side, X: An insulator connecting part 11 with an insulator connecting hole 10 is provided at the horizontal distance from the upper jumper wire to the retaining hole 6, and also at the back between the retaining part 7 and the yoke connecting part 9, and the remaining two conductors 2 are connected at both ends. A yoke for a three-conductor, characterized in that a balance yoke 12 for holding the yoke is rotatably connected to a yoke connecting part 9. 2. Clevis-shaped insulator connection part 1 equipped with an insulator connection hole 10
1 is provided protrudingly from the back of the retaining yoke body 5. A three-conductor yoke according to claim 1, which is a utility model. 3. A plate-shaped insulator connection part 11 equipped with an insulator connection hole 10,
A yoke for a three-conductor according to claim 1, which extends from both left and right sides of a retaining yoke body 5.