JPH0139369Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tensioning device mounting bracket for attaching a conductor tensioning device to a steel tower arm having an angle structure.

[Conventional technology]

In recent years, with the growth in electricity demand, the development of ultra-super high voltage, large capacity power transmission equipment has been actively promoted.
There are plans to increase the size.

By the way, conventional tension device mounting brackets are used, for example, as shown in FIG.
It consists of a flat plate-shaped substrate 2 attached to the lower surface of the tip via a batten 4, and connecting fittings 1, 1 connected to both sides of the substrate 2 so as to be rotatable up and down, respectively.

[The problem that the idea aims to solve]

In the conventional metal fittings, all the bolts that attach the board 2 to the tower arm 3 are subjected to shearing force due to the external force acting on the board 2 in the direction of the track, so it is impossible to avoid increasing the size of the bolts. Further, since both ends 5 of the board protrude outside the tower arm 3 so that the connecting fitting 1 can rotate up and down without interfering with the tower arm 3, there is a problem that the board 2 becomes large.
In general, the tip of a steel tower arm having an angle structure has a pair of angles 7, 7, 8, and 8 attached to the upper and lower parts of a flat vertical member 6, respectively, as shown in FIG. Since the battens 9 and 4 were connected to the end surfaces and the board 2 was attached to the bottom surface, both ends 5, 5 of the board to which the connecting fitting 1 was attached were far off from the central axis of the tip of the tower arm, and as a result, the tower arm The tip had the disadvantage of being subjected to a large moment due to the load of the conductor tension device.

This invention was made in view of the above points,
The purpose is to make the tension device mounting bracket and the tip of the tower arm more rigid and to make the tip of the tower arm more compact with a relatively simple structure.

[Means to solve the problem]

In order to achieve this purpose, the tension device mounting bracket of the present invention includes a rectangular cylindrical body and a connecting bracket for attaching a conductor tension device that is rotatably mounted on both sides or one side of the body with a support shaft. The main body is characterized in that the four corners of its outer periphery are connected to the tips of four angles, which are constituent parts of the steel tower arm, so that the main body also serves as a constituent part of the tip of the steel tower arm.

[Effect]

The tip of the steel tower arm has four angles 20, 20, 2 at the four corners of the outer periphery of the rectangular cylindrical main body 11.
1 and 21, each angle can be attached to two sides of the main body 11, making the tip of the tower arm more compact and rigid, and also providing support for attaching the connecting fitting 14 to the main body 11. axis 1
5 can be placed near the center axis of the tip of the tower arm, so the moment due to the load of the conductor tension device and the couple of forces caused by the loads of both conductor tension devices generated at the tip of the tower arm are reduced.

〔Example〕

Embodiments of the present invention will be described based on the drawings. In Figures 2 to 5, tension device mounting bracket 10
Connecting fittings 1 are attached to windows 13, 13 on both sides 12, 12 of main body 11, which is a rectangular cylinder with a cross-sectional opening shape.
4, 14 is inserted and this base is attached to the support shaft 15,
15, it is rotatably attached to both sides of the main body 11, and the steel tower arms 1 are attached to the four corners of the outer periphery.
9, each pair of upper and lower angles 20,
Mounting holes are provided for mounting 20, 21, and 21 with bolts. In this embodiment, the main body part 11 has a partition wall 16 integrally installed vertically in the center, and has recessed parts 17 formed in the front and rear sides. The free end of the connecting fitting 14 is a mounting part for mounting a conductor tension device, and in this embodiment, the clevis part 18 is used for mounting a yoke.
It is said that

As shown in FIG. 2, the tension device mounting bracket 10 is attached to a pair of upper angles 2, which are constituent parts of a steel tower arm 19, by bolting four corners of the outer periphery of the main body 11.
0, 20 and a pair of lower angles 21, 21. Therefore, the tension device mounting bracket 10 constitutes a part of the tip of the tower arm 19, and
The center axis of the tension device mounting bracket matches the center axis of the tip of the tower arm.

In this way, the tension device mounting bracket according to the present invention is
Since the main body portion 11 also serves as a part of the tip of the tower arm, it helps to save materials for the tip of the tower arm. or,
Since the upper and lower pairs of angles are directly fixed to the four corners of the outer periphery of the main body 11, not only is there no need for battens, but each angle can be attached to the main body on two sides, and all mounting bolts can absorb shearing force. This eliminates the problem of cracking, and provides a strong, integral connection between the tip of the tower arm and the tension device mounting bracket. In addition, there is a support shaft 15 on which the load of the conductor tension device acts through the connecting fittings.
can be placed near the central axis of the tower arm.

[Effect of idea]

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

The main body of the tension device mounting bracket can be made stronger by forming it into a rectangular cylindrical shape. Since the tip of the tower arm is constructed by attaching four angles to the four corners of the outer periphery of the main body, the tip of the tower arm can be made more compact and more rigid. Moreover, the material used for the tip of the tower arm can be saved, and the work of assembling the tension device mounting bracket to the tip of the tower arm can be simplified.

Since the support shaft that attaches the connecting fitting to the main body is located near the central axis of the tower arm tip, it reduces the moment caused by the load of the conductor tension device and the couple force caused by the load of both conductor tension devices at the tower arm tip. can.

In this embodiment, two connecting fittings are provided on the main body, but one connecting fitting may be provided.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional product installed on a steel tower arm, Fig. 2 is a front view showing a tension device mounting bracket according to the present invention attached to a steel tower arm, and Fig. 3 is a plan view of the same. Figure 4 is a sectional view taken along line A-A in Figure 2;
FIG. 5 is a perspective view of the same. 10... Tension device mounting bracket, 11... Main body part,
14... Connecting metal fittings, 15... Support shaft, 19... Steel tower arm, 20, 21... Angle.

Claims (1)

[Scope of utility model registration request] It consists of a rectangular cylindrical main body and a connecting fitting for attaching a conductor tension device that is attached to both sides or one side of the main body so as to be rotatable up and down on a support shaft. A tension device mounting bracket characterized in that it also serves as a component of the tip of a steel tower arm by connecting the tips of four angles that are the component parts.