JP2588570Y2 - Installation structure of cover for parabolic antenna - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an installation structure of a cover for a parabolic antenna.

[0002]

2. Description of the Related Art It is assumed that a parabolic antenna a is mounted on a supporting column b of a branch type steel pipe column and a truss column (see FIGS. 7 and 8). In this case, depending on the wind direction, the wind pressure load applied to the parabolic antenna a becomes asymmetric with respect to the column b, so that the supporting column b is twisted, the direction of the parabolic antenna a changes, and there is a possibility that the communication line may be damaged. . Therefore, generally, a triangular torsion preventing torque arm c is installed above and below the parabolic antenna a, and two branch lines d are extended from each vertex of the torque arm c in each direction to prevent the torsion of the column b. doing. However, taking such a twist countermeasure increases the number of parts and causes an increase in cost. An object of the present invention is to provide an installation structure of a cover for a parabolic antenna which can maintain stable communication without causing twisting of the support column b even without taking such twisting measures.

[0003]

Means for Solving the Problems The above-mentioned problem is caused when a windproof cover is installed on a parabolic antenna mounted on a column.
The problem was solved by arranging circular frames centered on the columns above and below the parabolic antenna, respectively, and forming an insulating sheet on these frames to form a cylindrical windproof cover.

[0004]

1 to 6 show an installation structure of a cover for a parabolic antenna according to the present invention. In the figure, 1 is a support,
Reference numeral 2 denotes a parabolic antenna attached to the column 1. Above and below the parabolic antenna 2, there are arranged bi-pipe frames 3, each of which extends in a circle around the support column 1.
It is supported on the column 1 by the inclined double steel members 4 and 5. An insulating sheet is stretched over the pipe frames 3 to form a cylindrical windproof cover 6. The insulating sheet is held in a cylindrical shape by engaging the upper and lower ends of the cover 6 with a tension applying means 7 and a locking means 8 described later at a predetermined pitch, respectively (see FIG. 5). It is preferable to use an insulating sheet having a thickness of about 0.5 mm.

The tension applying means 7 includes an upper horizontal steel member 4.
A large number of brackets 10 are erected at a predetermined pitch on a ring-shaped shaped steel material and a steel pipe material 9 attached to the bracket 10, and a hook bolt 11 and a spring 12 are mounted on these brackets 10 with double nuts 13. The tip of the hook bolt 11 is engaged with a pin 14 fixed to the upper end of the windproof cover 6. The windproof cover 6
A U-shaped notch 15 is provided at the upper end of the hole to allow the hook bolt 11 to pass therethrough.

On the other hand, the locking means 8 is mounted on the ring-shaped steel member 9 attached to the lower horizontal steel member 4 on the bracket 1.
6 are arranged upright at a predetermined pitch, and hook bolts 17 are fixed to these brackets 16 with nuts 18. The hook bolt 17 is also engaged with a pin 14 fixed to the lower end of the windproof cover 6. Therefore, the tension of the windproof cover 6 can be adjusted by the double nut 13 of the tension applying means 7.

The present embodiment is configured as described above.
Regardless of the direction of the wind, the wind pressure load applied to the windproof cover 6 is symmetrical with respect to the column 1, and the column 1 is not twisted.

In this embodiment, the upper and lower frames 3 are made equal in size, and the windproof cover 6 is made cylindrical. However, different sizes may be used. By doing so, the windproof cover 6 is inclined, and a structure advantageous for preventing snow accumulation is obtained. The windproof cover 6 may be formed in a shape other than a cylinder, for example, a regular polygon.

[0009]

According to the present invention, the column can be prevented from being twisted with a very simple structure, so that it is not necessary to take special reinforcing measures for the supporting column and the branch line, and the original purpose can be achieved at low cost.

[Brief description of the drawings]

FIG. 1 is a front view showing a usage mode of a parabolic antenna cover according to the present invention.

FIG. 2 is an enlarged view of the cover.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a cross-sectional view taken along line AA shown in FIG.

FIG. 5 is an enlarged sectional view taken along line BB shown in FIG. 3;

FIG. 6 is a view of an engagement portion of the hook bolt in FIG.

FIG. 7 is a front view showing an installation mode of a conventional parabolic antenna.

FIG. 8 is a plan view of FIG. 7;

[Explanation of symbols]

 Reference Signs List 1 support 2 parabolic antenna 3 pipe frame 4 horizontal steel 5 inclined steel 6 windproof cover 7 tension applying means 8 locking means 9 ring shaped steel 10 bracket 11 hook bolt 12 spring 13 double nut 14 pin 15 notch 16 bracket 17 Hook bolt 18 Nut

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H01Q 1/00-1/52

Claims (1)

(57) [Scope of request for utility model registration] When installing a windproof cover on a parabolic antenna attached to a support, circular frames centered on the support are arranged above and below the parabolic antenna, respectively, and an insulating sheet is attached to these frames. A cover structure for a parabolic antenna, wherein the cover is configured to form a cylindrical windproof cover.