JPH0145924B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a conductor tension device mounting bracket that is attached to an angled structure power transmission tower.

[Conventional technology]

In recent years, as the demand for electricity increases, the development of ultra-super high voltage, large capacity power transmission has been actively promoted, and in parallel, plans are being made to strengthen and enlarge conductor tension devices, transmission towers, etc.

By the way, the conventional conductor tension device mounting bracket includes, for example, a flat board 2 attached via a batten 4 to the lower surface of the tip of a steel tower arm 3 having an angle structure, as shown in FIG. Connection fittings 1 for attaching conductor tension devices connected to both sides so that they can move up and down
It is made up of.

[Problem to be solved by the invention]

However, since both ends of the board 2 protrude from both ends of the tower arm so that the connecting fitting 1 can be moved up and down without interfering with the tower arm 3, the length of the conductor tension device mounting fitting in the line direction becomes long. be. In addition, in the conductor tension device mounting bracket (Utility Model Publication No. 55-21445) installed on steel pipe power transmission towers, a base is fixed to a flange provided at the end of the steel pipe, and a connecting bracket is attached to this base. Therefore, the base is protruded from the tower arm so that the connecting fitting can be horizontally rotated without interfering with the tower arm. Therefore, also in this case, the length of the conductor tension device mounting bracket in the line direction becomes long.

Generally, a steel tower arm with an angle structure has a pair of angles 6 and 7 attached to the upper and lower parts of a flat vertical member 5, respectively, and battens 8 and 4 connected to the upper and lower end faces, as shown in Fig. 1. Since the conductor tensioning device was installed on the lower surface of the tip of the tower via the tensioning device mounting bracket, the tip of the tower arm and the board 2 were exposed to the unbalanced tension of both conductor tensioning devices. It had the disadvantage of receiving a big moment. Therefore, such a structure is unsuitable for ultra-super-high voltage, large-capacity power transmission, and drastic countermeasures are desired.

The present invention has been made in view of the above-mentioned points, and its purpose is to make the conductor tension device mounting bracket for an angle power transmission tower compact and strong by having a relatively simple structure. The aim is to strengthen the tip of the tower arm.

[Means to solve the problem]

In order to achieve this purpose, the angle conductor tension device mounting bracket for power transmission towers of the present invention has a main body section in which both the upper and lower mounting surfaces are integrally connected by a vertical wall section with a horizontal section, and a central vertical wall section of the main body section. It consists of a connection fitting for attaching a conductor tension device that is vertically rotatably attached to a pair of vertical walls on both sides or one side of the tower arm, and the main body is connected to the tower arm between the tips of the upper and lower beams, which are the constituent parts. The device is characterized in that the upper and lower mounting surfaces are interposed and connected.

[Effect]

The main body part 11 integrally connects the ends of the upper and lower beams 27, 31 and tensions the conductor tension device via the connecting fittings 21, 22. Since the mounting surface parts 12 and 13 are integrally connected by a vertical wall part with a horizontal cross section, it is strong against moments such as twisting and bending, and the rigidity of the tower arm tip and conductor tension device mounting bracket is greatly increased. ing. In addition, the connecting fitting rotation axes 19, 20
is inside the main body 11, that is, inside the tower arm, so
The length of the conductor tension device mounting bracket in the line direction is short, so it can be compactly installed at the tip of the tower arm. In addition, the connecting fitting rotation axes 19 and 20 on which the external force from the conductor tension device acts are connected to the tower arm 24.
Since the tower arm 24 is located near the central axis of the tower arm 24, only a small torsional moment acts on the tower arm 24.

〔Example〕

Embodiments of the present invention will be described below based on the drawings. 2 to 4, it consists of a conductor tension device mounting bracket 10, a main body 11, and right angle clevises 21, 22 attached to both sides of the main body 11. In addition, in locations where the conductor is only installed on one side, install a right-angled clevis on only one side. The main body portion 11 integrally connects an upper mounting surface portion 12 and a lower mounting surface portion 13 parallel thereto at a connecting portion. This connecting part consists of three vertical wall parts 15, 1 which are orthogonal to the central vertical wall part 14 at appropriate intervals in the central vertical wall part 14 in the central longitudinal direction.
6 and 17 are integrally formed. The main body part 11 has a large number of beam mounting bolt holes 18 formed in the upper mounting surface part 12 and the lower mounting surface part 13, respectively, and the vertical wall parts 15, 16, 17 protruding from both sides of the central vertical wall part 14 to support shafts 19, 20. Right angle clevises 21 and 22 are attached to each support shaft 19 and 20 so as to be able to rotate up and down, and the other ends of these right angle clevises 21 and 22 are equipped with tower side connecting fittings for conductor tensioning equipment, e.g. Install the horizontal yoke so that it can rotate horizontally.

The conductor tension device mounting bracket 10 connects the tips of the upper beam 27 and the lower beam 31 with its main body 11 to form the tip of the tower arm 24. That is, an inverted T-shaped upper beam 27 connected to the tips of a pair of angles 26, 26 protruding from the tower body through battens 25, and the tips of a pair of angles 30, 30 protruding from the tower body. The main body part 11 is inserted between the T-shaped lower beam 31 which is connected to the upper beam 31 through the batten 29 in a state of joining hands, and the upper mounting surface part 12 is attached to the upper beam 27 through the batten 28 with bolts and nuts. Attachment: The lower attachment surface portion 13 is attached to the lower beam 31 via the batten 32 with bolts and nuts. Therefore, the main body portion 11 of the conductor tension device mounting bracket 10 is also a component of the tower arm 24.

Therefore, in the main body part 11 of the conductor tension device mounting bracket 10, the horizontal cross section of the connecting part that integrally connects the upper and lower mounting surface parts 12 and 13 is formed by at least the vertical wall part of the shape. The tip portions of the device mounting bracket 10 and the steel tower arm 24 can be made more rigid. Also, support shafts 19, 2 for attaching the right angle clevises 21, 22 to the vertical walls 15, 16, 17 of the connecting portion
Since it is near the center axis of the steel tower arm 24 of 0,
The length of right angle clevises 21 and 22 protruding from the tower arm 24 is short, so the tension device mounting bracket 10 can be compactly installed at the tip of the tower arm, and the support shaft 19,
The torsional moment due to external force acting on 20 is reduced.

In addition, in the connecting part of the main body part 11 of this embodiment, three vertical wall parts 15, 16, 17 are orthogonally connected to the central vertical wall part 14, but the middle vertical wall part 16 can be omitted if it is not necessary. Good too.

〔Effect of the invention〕

Since the present invention is configured as described below, it produces the following effects.

With a relatively simple configuration, it is possible to make the conductor tension device mounting bracket more rigid and compact, as well as to strengthen the tip of the tower arm, and to reduce the torsional moment acting on the tip of the tower arm. Can be done. Therefore, it is particularly suitable for ultra-high-voltage, large-capacity power transmission.

[Brief explanation of drawings]

Fig. 1 is a side view of the conventional product, Fig. 2 is a front view of the embodiment of the present invention, Fig. 3 is the same side view, and Fig. 4 is the third
It is a sectional view taken along the line AA in the figure. 11...Main body part, 12...Upper mounting surface part, 13
...Lower mounting surface part, 14...Central vertical wall part, 1
5, 16, 17... Vertical wall part, 19, 20... Support shaft, 21, 22... Connection fitting for attaching conductor tension device, 24... Steel tower arm, 27... Upper beam, 31
...lower beam.

Claims (1)

[Claims] 1. Mounted vertically and rotatably on a pair of vertical walls on either side or one side of the main body 11, which is formed by integrally connecting the upper and lower mounting surface parts 12, 13 by a vertical wall with a horizontal cross-sectional shape, and the central vertical wall 14. The main body part 11 is inserted between the tips of the upper beam 27 and the lower beam 31, which are the constituent parts of the tower arm 24, and the upper and lower mounting surface parts 12,
An angle-made conductor tension device mounting bracket for power transmission towers, characterized by being connected by 13 points.