JPH1042441A - Device for expansion of diameter of bundle of conductors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a usual diameter to each bundle of conductors, which improves work efficiency and prevents enlargement in the size a pylon, near the pylon, and obtain large bundle diameter of conductors for the line between each pylon and the next, by enabling a user to arrange bundles of conductors at specified intervals by rotating a shaft, thereby shifting expansive arms between both main frames. SOLUTION: Expansive arms 2 are provided rotatably at the two places in the corresponding middle positions of the upper sides of the two main frames arranged in symmetrical positions, with feet 11 outward, and the expansive arms 2 are coupled with each other by a shaft receiving member 3. Upper and lower shaft receiving members 3 are reversely tapped, and they are screwed and bridged with each other by a shaft 4. With these threads reverse to each other, if a user rotates the shaft 4 by means of the handle 5, the shaft receiving member 3 shifts on the tapped parts at both ends of the shaft 4, and it follows that the expansive arms 2 coupled rotatably with them rotate, with the tops of top sides as the datum points, and that the top side mounting positions of the expansive arms 2, that is, the two main frames 1 come close to or part from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the construction of a transmission line, and more particularly to a method for reducing the diameter of a conductor by holding a multi-conductor bundle diameter between extension wires to a steel tower and reducing the diameter thereof, and equipment used for the method. It is.

[0002]

2. Description of the Related Art As power demand increases, power transmission lines have become larger and larger. As one of the power transmission techniques in such a situation, a stable increase of the power transmission capacity by reducing the inductance of the line is being measured. In other words, an ultra-large bundle diameter multi-conductor system is adopted to increase the separation between the conductors. Larger bundle diameter is desirable in terms of transmission capacity, but during construction,
Considering the time of maintenance and inspection, there was naturally a limit. When fastening the span conductors to the steel tower, if the bundle diameter is large, it is necessary to increase the interval between the upper and lower arms, so that the steel tower becomes large, and the equipment for retaining the steel tower also becomes large. In addition, in the extension work and the maintenance and inspection work at the time of construction, the spacing of the element conductors exceeding 1.2M exceeded the limit of the work. In view of this, various factors such as stabilization of transmission capacity, improvement of workability and cost reduction at the time of steel tower construction, and easy maintenance and inspection are examined. 4M), a proposal has been made to narrow the bundle conductor diameter between the first spacer and the support point of the insulator device and to configure six conductors with a base conductor separation of 0.8M (bundle conductor diameter 1.6M).

[0003]

As described above, the power transmission capacity is stabilized by changing the diameter of the bundle conductor between the towers and between the towers, and the problems of workability and economy are solved. However, in the present application, a device for expanding the bundle conductor diameter is disclosed.

[0004] Between the steel towers between the extending wire diameters, first, provisional tensioning is performed with a bundle conductor diameter suitable for the shape of the steel tower. Increase the diameter. The equipment is located between the three conductors on the left and right sides, and has a structure that pushes and expands both. A clamp used as a spacer is fixed to the upper side edge and leg side edge of the substantially T-shaped main frame, the leg sides of the two main frames are directed outward, the upper sides are arranged back to back, and In order to form a regular hexagon in which the distance between adjacent transmission lines is equal by the fixed clamp, the two main frames are configured so that they can be moved closer to or separated from each other. When the cross section of the bundle conductor is formed in a regular hexagon, the spacecraft for mounting the spacers is lifted, and the spacers are mounted at predetermined intervals toward the direction between the towers. Accordingly, although the six conductors are narrowed down from the insulator device to the first spacer, the six conductors having a large diameter are provided after the first spacer, so that the transmission capacity can be stabilized by reducing the inductance.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In an embodiment of the present invention, clamps 6 are fixed to both ends of the upper side and ends of legs 11 of a substantially T-shaped main frame 1 made of a pipe material. This clamp 6 is equivalent to that used for the spacer and the distance between adjacent clamps is 1.2M. Main frame 1 with legs 11 facing outward
Are arranged at two symmetrical positions, and each corresponding upper side intermediate position 2
A telescopic arm 2 is provided rotatably at the location, and both main frames 1
The corresponding telescopic arms 2 are connected by a shaft receiving member 3. The upper and lower shaft receiving members 3 are engraved with mutually opposing screws (right-hand screw, left-hand screw), and are screwed together by the shaft 4. A handle 5 is fixed to an intermediate portion of the shaft 4, and a screw 41 corresponding to a nut portion of the shaft receiving member 3 is engraved at a predetermined length at both ends. When the shaft 4 is rotated by the handle 5 by the mutually opposing screws, the shaft receiving member 3 moves in the threaded shape at both ends of the shaft 4, and the telescopic arm 2 rotatably connected to the shaft receiving member 3 starts at the upper side. The upper arm is attached to the telescopic arm 2, that is, the two main frames
One is approaching and leaving. In the second embodiment shown in FIGS. 3 and 4, the telescopic arm 2 is opened and connected in the up-down direction. However, the same effect can be obtained by connecting the telescopic arm 2 inward, and the shaft 4 can be shortened and the weight can be reduced. Also, if the handle is rotated in the same direction as in the first embodiment, the engraving of the screw changes. In the third embodiment shown in FIG. 5, the arrangement of the telescopic arm 2 is the same as that of the first embodiment, except that the nut portion of the shaft receiving member 3 is provided at one place and a general and inexpensive right-hand screw is used. 1, the number of rotations of the shaft must be increased as compared with the second embodiment, but it can be manufactured at low cost. Although not shown, the arrangement of the telescopic arm 2 is the same as that of the second embodiment, and the shaft structure of the third embodiment in which the nut portion of the shaft receiving member 3 is provided at one position is used as the fourth embodiment. Thus, the shaft can be shortened, and the shaft can be manufactured at low cost. In addition, by setting the engraving limit of this screw,
The amount of rotation of the clamp 6, that is, the amount of separation between the left and right main frames 1 is determined, and the amount of separation between the right and left clamps 6 is set.

[0006] The present application having the above-described configuration is used by hanging it on an electric wire near a power transmission tower. The six conductor wires extended between the towers have a regular hexagonal cross section of 0.8M between adjacent wires. First, clamp the upper end of the main frame 1 to the top wire, and then put the weight on the ground wire to separate the wires. And clamp it. In this state, the weight is applied to the midline, and the midline pushed out is fastened by the clamp 6 at the end of the leg 11. This operation is performed simultaneously on the other three corresponding lines. After the vertical position is determined, turning the handle 5 of the shaft 4 causes the upper and lower telescopic arms 2 to rotate in a direction closer to horizontal. The upper side is separated from the other, and the distance between the two heaven lines and the ground line is also 1.2M. The setting of the separation between the ceiling and the ground line is set by the length of the screw cut provided at both ends of the shaft, the handle is turned all the way to extend the telescopic arm,
If the upper side moves, it is set to be 1.2M naturally during that time. If an appropriate large bundle diameter can be set as described above, the spacecraft is pulled up, mounted on a large bundle diameter side electric wire near the present application, and a spacer is attached, thereby forming a large bundle diameter conductor over the entire span.

[0007]

As described above, by using the present invention, it is possible to set a normal conductor diameter which prevents workability and an increase in the size of the tower at the side of the tower, and a large bundle capable of reducing inductance between the tower diameters. Diameter conductors, and therefore economical,
The power transmission efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of the present application.

FIG. 2 is an enlarged front view of the first embodiment of the present application.

FIG. 3 is a front view of a second embodiment.

FIG. 4 is an enlarged front view of the second embodiment.

FIG. 5 is a front view of a third embodiment.

FIG. 6 is an open perspective view of a clamp section of the present application.

FIG. 7 is a perspective view showing a clamped state of a conductor of the clamp portion of the present application.

FIG. 8 is a layout diagram of six conductors to be expanded using the present application.

FIG. 9 is a schematic view of a different bundle diameter system expanded by using the present invention.

[Explanation of symbols]

 1 Main frame 2 Telescopic arm 3 Shaft receiving member 4 Shaft 5 Handle 6 Clamp 11 Leg side 41 Screw A Arm C Conductor G Insulator S Spacer T Steel tower Y Yoke

Claims (1)

[Claims] In a situation where a conductor bundle is bilaterally symmetrically divided into two parts with a vertical center line, a main frame for supporting a left and right element conductor group at a predetermined interval and a main frame for symmetrically disposing the two main conductor groups. A rotatable telescopic arm 2 with its base end pivotally mounted at an equivalent position between close members of two main frames 1 is provided,
Each corresponding telescopic arm 2 of the left and right main frames 1 is connected via a shaft receiving member 3, and a screw is engraved on the upper and lower or one of the shaft receiving members 3, and a shaft 4 is screwed on the shaft receiving member 3. A device for expanding the diameter of a conductor bundle, wherein a conductor bundle having a predetermined distance is formed by moving the position between the two main frames 1 by rotating the shaft 4 by being entangled.