JPS58170102A - Parabolic antenna adjustment device - Google Patents

Abstract

PURPOSE:To realize a fine adjustment of a parabola antenna with a simple constitution, by forming a slit at the coupling part of one side of a coupling rod and attaching rotatively a cam plate which is fitted to the slit to a supporting tool. CONSTITUTION:A support 4 is set vertically with free horizontal rotations, and a parabola antenna is attached to the support 4 and fixed by a U bolt 9 at the place near the position where a desired angle of elevation is obtained by the scales 8 marked to the support 4. Then a driver is put into the hole of an arm provided to a cam plate 14, and the plate 14 is turned. Thus a coupling rod 10 moves since the plate 14 has eccentricity, and the angle of elevation is finely changed. A volt 18 is tightened after obtaining an accurate angle of elevation. Then the antenna is set under a receiving state, and the support 4 is turned horizontally while looking at an input wattmeter. Then the direction of the largest value of the wattmeter is obtained, and the support 4 is fixed in that obtained direction.

Description

[Detailed Description of the Invention] The present invention relates to a parabolic antenna adjustment device that receives radio waves from a geostationary satellite, and provides a ζ laboratory antenna adjustment device that can perform fine adjustments with an extremely simple configuration. The purpose is to

As a structure for adjusting the angle of the parabolic antenna, low-priced products use bolts a and 2 bolts b) as shown in Figure 1.
, c to adjust it, but it has the drawback that it takes a lot of time to adjust. High-grade models use gear devices, but they have the disadvantage of being complex and expensive.

The present invention aims to provide a parabolic antenna adjustment device free from the above-mentioned drawbacks, and one embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 2 to 4, L-shaped fittings 2a, 2b, and 3 are fixed to the back surface of the antenna 1. A mounting body 6 is attached to the top of a support 4 vertically erected on the ground or on a ground structure. is installed horizontally by U-bolts 6. The above-mentioned mold fittings 2a and 2b are rotatably connected to both ends of the mounting body 60. The support 4 is provided with a scale 8 indicating an approximate value of the antenna elevation angle depending on the position of the support 7, and the support 7 is tightened by a U-bolt 9 to the scale position indicating the elevation angle which can be calculated in advance depending on the antenna installation location. Connecting rod 10
A round hole is drilled at one end, and a bolt or pin 2o is used to allow the L-shaped fitting 3 to rotate freely, and a long hole 12 is drilled at the other end, and it is attached to the support 7 with a bolt 18 through a washer. It will be done. The connecting rod 1o is provided with a long hole 13 that is substantially perpendicular to the long hole 12. A disc cam 14 that fits smoothly into the elongated hole 13 has a round hole 16 at a distance S from the center of the circle, and is rotatably attached to the support 7 with a machine screw 16. The disc cam 14 has arms 17a and 17b and holes 11a and 11b into which a screwdriver can be inserted.

The holes 19a and 19b formed in the support 7 are for the case where the support 7 can be installed by shifting it with respect to the column 4 as shown by the dashed line in Figure 3.

Now, in order to install the antenna using this device, the position of the geostationary satellite to be received is fixed, and the elevation angle and direction to which the antenna should be pointed are known depending on the installation location of the antenna. 1 and horizontally rotatably installed, and then fixed with U bolts 9 in the vicinity of the position where the necessary 1 angle is given by the scale 8 attached to the support column 4. Next, when the Drino (-) is inserted into the holes 11a and 11b of the arms 17a and 17b provided in the cam plate 14 and the cam plate 14 is rotated, the cam plate 14 is eccentric, so the connecting rod 1o moves and the elevation angle is finely adjusted. After obtaining the correct angle of elevation, tighten the bolt 18. Next, put the antenna in the receiving state, rotate the support 4 horizontally while looking at the input wattmeter, and find the direction where the input wattmeter indicates the largest value. Fixedly install the support post af in this direction.

As described above, according to the present invention, it is possible to provide an inexpensive parabolic antenna adjustment device in which the angle of elevation can be adjusted very easily and finely, and which has a small number of components.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional parabolic antenna adjustment device, Fig. 2 is a perspective view of a parabolic antenna adjustment device in an embodiment of the present invention, Fig. 3 is a side view of the same, and Fig. 4 is a part of the same device. FIG. 1...Antenna, 2a12b, 3...
L-shaped bracket, 4... Support, 6... Mounting body, 6, 9... U port, 7... Support, 10... ... Connecting rod, 12, 13... Long hole, 14... Disc cam, 17a, 17b...
...Arm, 16...hole, 16...screw, 18, 20...bolt.

Claims (1)

[Claims] Attach the mounting body to the column horizontally, and attach the parabolic antenna to the above-mentioned attachment body, rotating around the horizontal axis. A connecting rod is provided that connects the supports installed at the positions, a long hole is provided in one connecting portion of the connecting rod, and a cam plate that fits into this long hole is rotatably attached to the support. , a parabolic antenna adjustment device that finely adjusts the elevation angle of the parabolic antenna by rotating the cam plate;