JPH0221514A - Four-set rectangular arrangement hanging insulator device - Google Patents

Abstract

PURPOSE:To make it possible to hold a power-transmission wire of a large tensile force or a large vertical load securely, and to reduce a swinging when a strong wind is received or attachment of snow and ice, by arranging two sets of pairs of insulators parallel in the rectangular direction to the wire lines, in the longitudinal direction. CONSTITUTION:Insulator sets which consist of two insulator lines 1 and 1 parallel in the direction square to the wire lines are arranged two sets in the longitudinal direction. The earth sides of the two insulator lines 1 and 1 of each set are installed to both ends of the earth side balance yokes 2 respectively, and the centers of the earth side balance yokes 2 and 2 of each set are held to two fixing metals 3 and 3 installed in the longitudinal direction to an iron tower with pins 4 and 4 being held with one shaft respectively. As a result, the whole body of the hanging insulator device including four sets of insulator lines are installed to the iron tower with two shafts in the front and the rear sides. Consequently, an overhead power-transmission wires with a large tensile force and a large vertical load can be held securely, and the wind receiving area of the whole unit is made smaller to reduce the swinging and the attachment of snow and ice.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention supports overhead power transmission lines that have long spans between towers and have large tensions and vertical loads, such as overhead power transmission lines that cross straits. The present invention relates to a four-row square arrangement suspended insulator device used for

(Prior technology) When an overhead power transmission line crosses a wide area such as a strait, the tension and vertical load on the transmission line increases as described above, and the transmission line also suffers from severe damage due to strong winds. Therefore, the ability of the suspended insulator device that supports this is insufficient with three insulators,
It becomes necessary to use a quadruple insulator. However, because the conventional four-suspended insulator device has four insulators arranged in a line in the front and back direction of the track, when the wind blowing through the strait blows horizontally against the track, had the disadvantage that the area affected by the wind was large, making it susceptible to sway. Furthermore, depending on the location, the wind that blows through the strait is often a cold wind accompanied by snow, but the conventional four-suspended insulator system also has a drawback in that large amounts of snow can easily land on the system because the snow accretion area is large.

(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, and can not only reliably support power transmission lines with large tensions and vertical loads, but also provide support for power transmission lines that are subject to strong winds. It was completed with the aim of creating a four-row square array suspended insulator device that would cause less shaking (and less ice and snow buildup).

(Means for Solving the Problems) A first invention made to solve the above problems is a first invention in which a set of two insulator chains arranged in parallel in a direction perpendicular to the railway track is arranged in parallel in the longitudinal direction of the railway track. It is characterized by a conductive arrangement.

A second invention related to this is a four-row square array suspension insulator device in which two sets of two insulator rows arranged in parallel in a direction perpendicular to the track are arranged in the longitudinal direction of the track.
The earth side of each set is attached to the steel tower with one shaft, and the entire device is attached to the steel tower with two shafts.

Furthermore, the third invention is two lines arranged in parallel at right angles to the railway line.
In a quadrilateral suspension insulator device in which two groups of insulator groups are arranged in the longitudinal direction of the track, the ground sides of the two insulator groups of each group are connected to a ground-side balance yoke, and these ground The top of the side balance yoke is connected to both ends of the tower-side balance yoke, and the top of the tower-side balance yoke is uniaxially attached to the tower.

(Examples) The present invention will be explained in more detail below using illustrated examples.

1 and 2 show a first embodiment, with FIG. 1 being a front view as viewed from the direction of the railway, and FIG. 2 being a side view as seen from a direction perpendicular to the railway. In these figures, (1) is an insulator chain, and the set consisting of the two insulator chains (1), (1) shown in Figure 1, which are arranged in parallel at right angles to the railway line, is shown in Figure 2. There are 21 lines arranged in the front and rear directions of the track. As shown in the figure, the ground sides of the two insulator chains +11 and +11 of each set, which are arranged in parallel in the direction perpendicular to the track, are respectively attached to both ends of the ground side balance yoke (2) for each set. Ground side balance yoke (2
), (2) are supported by two mounting brackets (3), (3) attached in the front-rear direction of the steel tower, respectively, by means of pins (4), (4), with their respective negative axes. As a result, the entire suspended insulator device including the four insulator series [11] is attached to the steel tower by two shafts, front and rear. In addition, (5) and (5) are line side balance yokes arranged in the line direction,
Insulators on the right side spanning two groups +11, +11
is attached to one line side balance yoke (5),
Similarly, the insulators on the left side across the two groups +11,
(1) is attached to the other line side balance yoke (5). Below these left and right line-side balance yokes (5) and (5), yokes for four conductors (6) and (7) are installed in a direction perpendicular to these, that is, in a direction perpendicular to the line, to support the conductors, respectively. are doing. Note that (8) is a conductor clamp attached to the tips of the four-conductor yokes (6) and (7), and (9) and OI are arc horns.

In this structure, a set consisting of two insulator chains + 11 arranged in parallel in a direction perpendicular to the track is arranged in a two-conductor arrangement in the front and back direction of the track, so a total of four insulator chains + 11 are used. Even overhead power lines with large tension and vertical loads can be supported reliably. In addition, the force of the wind blowing from the side of the power transmission line is absorbed by two insulators (1) arranged in parallel.
(1), and since the area of the entire device receiving wind is reduced, the shaking can be reduced. Furthermore, since the area of snow accretion becomes smaller, the amount of snow accretion can also be reduced. In particular, a device like the first embodiment in which the entire device is mounted on a steel tower with two axes has excellent roll balance characteristics against wind from the side, and because it is supported on two axes, it is possible to distribute the load. There are advantages that can be achieved.

3 to 5 show a second embodiment, in which two insulator chains (1), [11
It is the same as the first embodiment that the earth side of the earth side is attached to the earth side balance yoke (2), but the upper ends of these two earth side balance yokes (2), (2) corresponding to each group are attached to the earth side balance yoke (2). Attach it to both ends of the tower-side balance yoke 0υ in the direction perpendicular to this (i.e., the longitudinal direction of the track), and then attach the top of this tower-side balance yoke Ql) to the tower mounting bracket (3) with two upper and lower pins ( The difference is that 4a) and (4b) are used for mounting with a single shaft.

In this way, the entire device is mounted on a steel tower on a single axis, and it has excellent roll balance performance not only against wind blowing from the side of the track, but also against wind blowing in the front and back directions of the track. Become something.

(Effects of the Invention) As explained above, since the present invention is equipped with four insulator chains, it can reliably support power transmission lines with large tension and vertical loads, such as overhead power transmission lines that cross a strait. In addition, it is less susceptible to shaking from wind blowing from the side of the power transmission line, and the amount of snow that accumulates is smaller than that of conventional systems. Further, in the case of the invention described in claim 3, it exhibits excellent balance performance against lateral shaking due to wind blowing from the direction of the line and from the side of the line, and is preferable in terms of preventing accidents on power transmission lines. Therefore, the present invention greatly contributes to the development of industry as a four-row square array suspended insulator device that eliminates the problems of the conventional devices.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the first embodiment, Fig. 2 is a side view thereof, Fig. 3 is a front view showing the second embodiment, Fig. 4 is a side view thereof, and Fig. 5 is a perspective view thereof. It is a diagram. (■): Insulator chain, (2): Earth side balance yoke, θ
υ: Tower side balance yoke.

Claims (1)

[Scope of Claims] 1. A quadrilateral suspension insulator device characterized in that two sets of two insulator chains arranged in parallel in a direction perpendicular to a track are arranged in the longitudinal direction of the track. 2. In a quadrilateral suspension insulator system in which two groups of insulators are arranged in parallel in the direction perpendicular to the track, two sets are arranged in the longitudinal direction of the track, and the ground side of each set is uniaxially connected to the steel tower. Installation: A four-row square array suspended insulator device characterized in that the entire device is attached to a steel tower with two shafts. 3. In a quadrilateral suspension insulator device in which two groups of insulators arranged in parallel in the direction perpendicular to the track are arranged in the longitudinal direction of the track, the ground side of the two insulators in each group is A quadruple chain characterized in that each is connected to a ground side balance yoke, the tops of these ground side balance yokes are connected to both ends of the tower side balance yoke, and the tops of the tower side balance yokes are mounted on the tower with a single shaft. Square array suspended insulator device.