JPH019049Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a double suspension device for suspending multiple conductors such as 8 conductors, 10 conductors, 12 conductors, etc. in an annular arrangement as a whole for UHV class large capacity power transmission. The purpose of this is to make the upper and lower portions of the conductor slide (swing) in the direction of the line.

8 issues that should be addressed in recent years for large-capacity power transmission (UHV class)
Development of multi-conductor power transmission, such as conductors, 10-conductors, and 12-conductors, has progressed, and various multi-conductor suspension devices have been provided to suspend these conductors. In this case, the suspension yokes currently used are mainly fixed yoke types in which all the conductors are arranged at once. However, in order to suspend this multi-conductor structure, which has an annular arrangement as a whole, the bundle diameter of all the conductor arrangements will naturally become large, which requires a large fixed yoke, which not only increases the weight but also makes transportation difficult. This caused difficulties in handling overhead wire work, etc.
In addition, as the bundle diameter increases, the sliding of the conductors on the upper and lower sides in the line direction due to sleat jump, etc. becomes large, and the simple fixed yoke type described above cannot cope with this. come.

The present invention eliminates the above-mentioned defects, and its structure will be explained below with reference to the drawings of the embodiments.

The drawing shows a double suspension system with 10 conductors, 1
3A is a cross-shaped fixed yoke formed by a downwardly curved upper suspension yoke part 3 and an orthogonal double yoke part 3'.
and a split-type duplex consisting of a frame-shaped lower suspension yoke part 4 having a wind pressure relief window 14 in the center, which is disposed via a right-angled clevis 6 at the lower center end of the duplex yoke part 3' parallel to the line direction. At the lower edge of the upper suspension yoke part 3 of the suspension yoke, there is a suspension clamp that clamps the upper conductor 9 among the conductors 9 which are vertically divided into two halves (divided into 4 conductors and 6 conductors) from the 10 conductors arranged in an annular arrangement as a whole. 2 are attached at predetermined intervals, and a suspension clamp 2 for clamping the remaining lower conductor 9 is attached to the lower edge of the outer periphery of the lower suspension yoke portion 4 at a predetermined interval. Reference numerals 5 and 5 designate two insulator chains connected to the upper ends of both ends of the double yoke portion 3' of the cross-shaped fixed yoke 3A. , pipe-shaped steel tower 12
It is pivotally attached to the lower end of a connecting link part 7a that provides one-point support for the steel tower mounting bracket 7 attached to the mounting seat 10 fixed to the mounting seat 10, and the whole becomes a double suspension device.

To explain this effect now, the 10 conductors 9 are connected to the upper and lower suspension yoke parts 3 of the double suspension yoke 1,
It is used to suspend 10 conductors by clamping them to 2 groups of suspension clamps directly connected to 4.

Here, in this suspension device, the steel tower mounting bracket 7 at the upper end is pivotally attached to the mounting seat 10 with a shaft 11, and the connecting link portion 7a on the insulator chain side is supported at one point, so that the wind pressure Movement caused by a load or the like can flow freely.

In addition, under such multi-conductor conditions, such as 10 conductors exhibiting an annular arrangement as a whole, the state of icing and snow accretion on each element may be different, which would not be expected with a conventional multi-conductor of about 4 conductors. The load on the upper and lower sides is often different. Therefore, even if sliding occurs in the track direction due to three-jumping, gear ropping, etc., the degree of sliding will naturally be different on the upper and lower rail sides, but this double suspension yoke 1 It is divided into a suspension yoke part 3 and a lower suspension yoke part 4, and this connecting part has a clevis part that is freely movable in the line direction, so at least the multi-conductor having an annular arrangement as a whole is divided into two parts and can be slid. It is something that can be moved and does not put strain on the yoke. Of course, this second group of suspension clamps has upper and lower suspension yokes 3 and 4.
Since the spacer is directly suspended from the spacer, the flow against the lateral load is uniform, and the spacer (not shown) is not strained. Furthermore, since the double yoke part 3' to which the two series of insulator chains 5 are attached is formed perpendicular to the upper suspension yoke part 3, the entire double suspension yoke 1 becomes compact and contributes to narrow line spacing design. It is something to do. In addition, when using a multi-conductor of 12 conductors, 6 suspension clamps 2 are arranged on the upper and lower suspension yoke parts 3 and 4, respectively, and when using 8 conductors, 4 suspension clamps 2 are arranged on the upper and lower suspension yoke parts 3 and 4, respectively. It is sufficient to adopt a configuration in which several suspension clamps 2 are arranged.

As mentioned above, the dual suspension system of the present invention has a structure in which the main body of the suspension yoke with multiple conductors (8, 10, 12 conductors, etc.) is divided into two in the vertical direction. The unexpected enlargement of the yoke has been improved to facilitate manufacturing, workability, transportation, etc., and the upper yoke has been made into a cross-shaped fixed yoke structure, and the center lower end of the double yoke section parallel to the track direction has been improved. The right-angled clevis attached to the frame-shaped lower suspension yoke, which serves as the lower yoke, is connected to the lower yoke, making it movable in the track direction. It can directly escape the sliding and does not give unreasonable twist to the right angle clevis.
Furthermore, since this lower suspension yoke is provided with a wind pressure release window in the center, it does not apply more wind pressure than necessary to the lower suspension yoke, and of course it is lightweight and easy to handle. In addition, since the tower body side is constructed of a single point support type, it swings appropriately against wind pressure loads, etc., and does not apply twisting, bending moments, etc. to this connecting portion.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a perspective view showing the main parts of the upper and lower suspension yoke parts. 1... Double suspension yoke, 2... Suspension clamp,
3... Upper suspension yoke part, 4... Lower suspension yoke part, 5... Insulator chain, 7... Steel tower mounting bracket, 8...
Double yoke.

Claims (1)

[Scope of utility model registration request] The suspension clamp 2 of the upper conductor 9, which divides the multi-conductor of 8 or more conductors in an annular arrangement into upper and lower halves, is attached to the lower edge of the curved upper suspension yoke portion 3 arranged orthogonally to the line direction of the cross-shaped fixed yoke 3A. The cross-shaped fixed yoke 3A is attached at a predetermined interval to the
At the center lower end of the double yoke part 3', which is in the line direction,
The central upper end of the frame-shaped lower suspension yoke portion 4 having the wind pressure relief window 14 is connected to the upper suspension yoke portion 3 through a connecting member such as a right-angled clevis 6 so as to be parallel to the upper suspension yoke portion 3, and the outer periphery of the lower suspension yoke portion 4 is Suspension clamps 2 for the remaining lower conductor 9 of the multi-conductor are attached at predetermined spacing positions on the lower edge, and two insulator chains 5 are connected to the upper edges of both ends of the double yoke portion 3' in the direction of the line. A double suspension system in which the end of a connecting link part 7a connected to a double yoke 8 disposed at the upper end is pivoted to the center of a steel tower mounting bracket 7 that is attached to the steel tower side so as to be able to swing laterally, providing one-point support.