JPH0749689Y2 - Large bundle diameter 6 conductor V suspension system for transmission line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a V-suspension suspension device for large conductor diameter 6 conductors used for 6 conductor AC transmission lines.

[Conventional technology]

To increase the transmission capacity of the transmission line, increase the transmission voltage,
Although it is customary to increase the current capacity of the transmission line,
Recently, in a 6-conductor AC transmission line, the conductor-side yokes 52, 52 of the transmission line tensioning devices 51, 51 attached to the tower as shown in FIGS. 2 and 3 are enlarged, and the distance D between the conductors 53 attached thereto is increased. It has been proposed that the transmission capacity is increased by expanding the line width to reduce the line inductance.
A V-suspension suspension device for a 6-conductor AC transmission line used for this 6-conductor AC transmission line is, for example, an upper yoke 55 and an intermediate yoke 56 and an intermediate yoke 56 and a lower yoke connected to a V-shaped insulator connecting mechanism 54 as shown in FIG. 57 in series with multiple connecting fittings 58, 5
By rotatably connecting with 9,60 and gripping the conductors via suspension clamps 61 on both ends of each yoke 55, 56, 57, bundle diameter φ of 6 conductors (diameter of a circle passing through the center of 6 conductors) ) Was suspended from a large bundle diameter 6 conductor transmission line.

Incidentally, 63 shown in FIG. 2 is a spacer for keeping the conductor interval.

[Problems to be solved by the device]

In the above-mentioned conventional device, the upper yoke 55 has the V-shaped insulator connecting mechanism 54.
Since it is connected to, the lateral shake due to lateral wind pressure is small,
Since the intermediate yoke 56 and the lower yoke 57 are rotatably connected to the upper yoke 55 and the intermediate yoke 56 by a plurality of connecting metal fittings in series, respectively, the intermediate yoke 56 and the lower yoke 57 are freely connected by lateral wind pressure. Shake sideways. As a result, the conductor spacing may be greatly collapsed, and an accident may occur in which the underwire yoke contacts the leeward side wire suspension clamp.
On the other hand, as shown in FIG. 5, the upper, middle, and lower three yokes are integrally formed, and a large bundle diameter 6 conductor yoke body 62 attached to the lower end of the V-shaped insulator connecting mechanism 54 is used. Although the distance is not broken, it is large and heavy. For this reason, inconvenience arises in that it is extremely difficult to carry into a steel tower in a mountainous area, attach it to a steel tower, perform a tension line work, and perform work in high places.

The present invention has been made in view of the above-mentioned points. Even though it is a split type yoke, there is no collapse of the conductor spacing due to lateral wind pressure, and the largest intermediate yoke is remarkably lightweight and easy to carry. It is intended to provide a V suspension device for a 6-conductor power transmission line.

[Means for Solving the Problems]

In order to achieve this object, in the V-suspension suspension device for a large bundle diameter 6-conductor power transmission line of the present invention, an upper yoke is attached to the lower end of a V-shaped insulator connecting mechanism to be attached to a steel tower, and the upper yoke and the intermediate yoke are connected to each other. Removably integrally connected with a pair of c-shaped connecting fittings, the middle yoke and the lower yoke are detachably connected with a pair of reverse c-shaped connecting fittings, and suspension clamps are attached to both ends of each yoke. The intermediate yoke is characterized in that a flange portion for attaching a suspension clamp to both ends of one pipe and a mounting plate for detachably attaching one end of the connecting fitting are provided in a protruding manner.

[Action]

The upper yoke and the middle yoke, which are connected to the V-shaped insulator connecting mechanism, are integrally connected by a pair of connecting fittings arranged in a c-shape, and the intermediate yoke and the lower yoke are connected by a pair of connecting fittings arranged in a reverse c-shape. Therefore, the relative displacement of the yokes due to the lateral wind pressure is eliminated, and the conductor arrangement of the large bundle diameter 6-conductor suspended yoke does not collapse. In addition, the upper, middle, and lower three yokes are of a split type, so they are easy to carry.In particular, the intermediate yoke has flanges for suspension clamps and mounting plates for connecting fittings protruding from both ends of one pipe. Therefore, it is possible to remarkably reduce the weight with a slender and simple structure, and it is easy to carry even though it is a large bundle diameter 6-conductor suspension yoke.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, a large bundle diameter 6-conductor suspension yoke body 1 is attached to two suspension device attachments fixed downwardly at appropriate intervals to a suspension tower arm via a V-shaped insulator linkage mechanism 4. It is a thing. The V-shaped insulator connecting mechanism 4 allows the large bundle diameter 6-conductor suspending yoke body 1 to swing in the line direction, but suppresses the swing (transverse shake) in the direction perpendicular to the line.

The large bundle diameter 6-conductor suspension yoke body 1 includes an upper yoke 18a attached to the lower ends of the V-shaped insulator connecting mechanisms 4, 4, and a pair of parallel clevis links 35 arranged in a c-shape at the lower center of the upper yoke 18a. Intermediate yoke 20a that is detachably connected with four sets of bolts and nuts, respectively, and a pair of connecting brackets 21, 21 that are arranged in an inverted C-shape on both ends of the lower portion of the intermediate yoke. It has a lower yoke 22 connected so that it can only swing in the track direction. And york 18
Suspension clamps 24 for holding a large bundle of 6 conductors in a regular hexagonal arrangement are attached to both ends of a, 20a, 22. In addition, the intersection of the connecting metal fittings 35, 35 arranged in a c-shape on the axis is set to the midpoint of the suspension point of both suspension clamps 24 of the upper yoke 18a, and the connecting metal fittings arranged in a reverse c-shape
The intersection of 21,21 on the axis is the double suspension clamp 2 of the lower yoke 22.
It goes to the midpoint of the suspension point of 4.

The intermediate yoke 20a is welded to one pipe 30, flange portions 31 and 31 protruding from both ends thereof, and the upper and lower portions of the tip end of the pipe 30 and the inside of the flange portion 31 so that one end of the connecting fittings 35 and 21 is attached. It consists of clevis mounting plates 32, 32 for mounting.
The suspension clamp 24 has a flange 31 and a flanged arm 34
It is rotatably attached via.

The connecting fitting 21 is composed of a single link 25 and a right-angled clevis rotatably connected to both ends thereof.

In this embodiment, the lower yoke 22 is the intermediate yoke 20a.
Since it is connected with the connecting metal fittings 21, 21 in the inverted C-shape,
Rotation of the lower yoke 22 due to lateral wind pressure causes the leeward coupling fitting 21
And the lower yoke 22 does not laterally swing with respect to the intermediate yoke 20a. Further, since the intermediate yoke 20a is integrally connected to the upper yoke 18a by the connecting fittings 35, 35 arranged in a C shape, and the upper yoke 18a is connected to the insulator connecting mechanism 4 arranged in the V shape, the intermediate yoke 20a and the lower yoke 22 are connected. And the upper yoke 18a are integrated with each other to prevent lateral vibration, and the regular hexagonal arrangement of conductors as a whole does not collapse.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

Since the upper yoke and the intermediate yoke, and the intermediate yoke and the lower yoke are detachably integrally connected by a pair of connecting fittings, the 6-conductor yoke body can be assembled and disassembled freely, and the intermediate yoke is a single pipe. Since a slender and simple structure in which a flange for a suspension clamp and a mounting plate for a connecting metal fitting are projectingly provided at both ends of the cable, it is possible to significantly reduce the weight. There is an advantage that it is very easy to carry into the steel tower in the mountainous area.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway front view of an embodiment of the present invention, and FIG. 2 is a partially cutaway plan view of a conventional large bundle diameter 6-conductor AC transmission line,
FIG. 3 is the same 6-conductor array diagram, and FIGS. 4 and 5 are partially cutaway schematic front views of a conventional large-suspension-diameter 6-conductor transmission line V suspension system. 4 ... Insulator connection mechanism, 18a ... Upper yoke, 21,35 ... Couplings, 20a ... Intermediate yoke, 22 ... Lower yoke, 24 ...
Suspension clamp, 30 …… pipe, 31 …… flange part, 32,3
3 ... Mounting plate.

Front page continued (72) Inventor Akihiro Yukino 3-11-20 Wakaoji, Amagasaki City, Hyogo Prefecture Kansai Electric Power Co., Inc. Inside the Japan Malleable Cast Iron Plant (56) References Shown 58-66821 (JP, U) Shown 61-109014 (JP, U) Shown 59-103323 (JP, U) Shown 60-75924 ( JP, U) Actual development Sho 57-98107 (JP, U) Japanese public Sho 58-4407 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. An upper yoke is attached to a lower end of a V-shaped insulator connecting mechanism to be attached to a steel tower, and the upper yoke and the intermediate yoke are detachably integrally connected by a pair of connecting fittings in a C-shape to form an intermediate yoke. The lower yoke is detachably connected by a pair of connecting brackets arranged in an inverted C shape, and suspension clamps are attached to both ends of each yoke, and the intermediate yoke is a flange for attaching the suspension clamps to both ends of one pipe. Portion and a mounting plate for detachably mounting one end of the connecting metal fitting, the large bundle diameter 6 conductor V for transmission line
Suspension device.