JPH0216603B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a parabolic antenna mounting bracket that is adjustable over a range of 360° in azimuth and 150° in elevation and is adjustable throughout the sky.

In order to directly receive radio waves from broadcasting satellites in each home, the angle of the antenna must be oriented correctly in the direction of the broadcasting satellite in order to capture radio waves with a frequency several times higher than the current VHF from a parabolic antenna. Even if there is a slight deviation in the center of the beam, reception accuracy will be extremely degraded. For example, if the beam center shifts by 1°, the antenna gain will change.
An example of a 2 dB drop requires equipment to precisely point the antenna in the direction of the broadcasting satellite with an accuracy of less than 0.5 degrees. For this purpose, when installing a parabolic antenna, it is necessary to have equipment that can accurately adjust its angle, and also to be able to sufficiently withstand damage from wind pressure and the like.

JP-A-59-15307 discloses an antenna support consisting of a base body that is attached to a fixed object and a support body that is pivotally attached to the base body so as to be horizontally rotatable and to which an antenna can be attached. Disclosed. However, in order to correctly point the antenna in the direction of the broadcasting satellite, the elevation angle of the antenna must be set in advance for an antenna support that only rotates horizontally relative to the base. As a result, the antenna gain decreases by as much as 2 dB, so the antenna elevation angle must be finely adjusted. The means for fixing the base and antenna support in this publication is by ordinary bolt tightening, and if the antenna is subjected to external shocks such as wind pressure or changes over time, the direction of the antenna's reflective surface relative to the broadcasting satellite may be distorted. There is a drawback that the bolted part loosens. The present invention aims to eliminate these drawbacks.

The configuration and effects of the present invention will be explained with reference to drawings of embodiments.

Figure 1 is a partially cutaway front view of the parabolic antenna attached to the mounting bracket of the present invention, Figure 2A
3B is a partially cutaway front view and plan view of the state in which the antenna angle is accurately determined and fixed with the azimuth angle fine adjustment fitting and the elevation angle fine adjustment fitting attached, and Fig. 3A is a plane view of the mounting fitting of the present invention. Figure 3B is a front view of the same as above, Figure 3C is a side view of the same as above, Figure 3D is a bottom view of the same as above, Figure 4 is a front view of the mounting base erected vertically on the ground, Figure 5A Figure 5B is a plan view of another example of a mounting base with a partial cutout that allows the mounting bracket of the present invention to be attached to the top of a steel tower constructed above, an assembly frame adapted to the site, and various structures. Front view of the same as above with a part cut away, Fig. 6 A, B, C, D are horizontal rotation members, Fig. 7 A, B, C, D are elevation angle adjustment members, Fig. 8 A, B, C, D shows the pipe connector, Fig. 9 shows the reinforcing member, Fig. 10 A and B show the horizontal rotation member, Fig. 11 shows the connection state between the horizontal rotation member and the mounting base, and Fig. 12 shows the elevation angle fine adjustment bolt. , FIG. 13 shows the elevation angle fine adjustment bolt support plate.

The horizontal rotation adjustment member A is composed of a single rectangular plate 1 bent into a shape, and has rising sides 1a in the longitudinal direction,
Both ends of 1b have a radius with the width as the diameter.
The recesses 3 and 4 are created by cutting only one end with the same radius, and holes 2 and 2' for the bolts to be connected are made at the center of this radius. In addition, a hole 1d is made in the center of the bottom plate 1c of the rectangular plate 1, into which the tip of the column member 5, which is a horizontally rotating member D made of galvanized thick-walled drawn steel pipe, is inserted and fixed by welding. Drill the elevation angle fine adjustment bolt mounting hole 6 and the azimuth (horizontal) angle fine adjustment support plate mounting holes 7 and 7' for the parabolic antenna BS.

The elevation angle adjustment member B has mounting holes 14, 14' and 15 for antenna attachments in antenna mounting portions 9' and 10' that are bent to the outside of rising sides 9 and 10 of a rectangular plate 8 that is bent in shape. 15', and fixings made of bolts, nuts, etc. on the rising sides 9 and 10 to firmly fix the horizontal rotation adjustment member A and the elevation angle adjustment member B so that they do not move after the elevation angle of the parabolic antenna BS is determined. Members 42, 42', 4
3, 43' stop holes 12, 12' and 13, 13'
Open. Also, bolt holes 1 on rising sides 9 and 10
1 and 11', and a bolt hole 16 for fine adjustment of the elevation angle of the parabolic antenna in one corner of the center of the bottom plate 8a. The distance between the rising sides 9 and 10 of the elevation angle adjusting member B is the same as the rising sides 1a and 1b of the horizontal rotation adjusting member A.
The interval is set between the two.

As shown in FIGS. 9A and 9B, the reinforcing member C is made of a pipe material 17 such as a thick steel conduit, and its length is cut to fit between the rising sides 9 and 10 of the member B. C' is a bolt inserted through reinforcing member C.

The horizontal rotating member D is formed by cutting a thick-walled galvanized steel pipe 18 into a certain length, and cuts the circumference of the pipe into three equal parts at an angle of 120° almost on a line along the cutting length. The internal threads 22, 23, and 24 of the bolt are carved. Cuts 25, 26, 27 for hanging the pipe connector 28 are cut into the end surfaces between the female threads 22, 23, 24, respectively. This cut 25,
26 and 27 are cut deeper on the outer side than on the inner side so that it is difficult to pull out when the outward protruding side 29 of the tail part of the pipe connector 28 is hooked.

The pipe connector 28 of the connecting member E is made of an elongated metal plate, with both ends wide and the middle narrow, and two tatu pin screws 32, 3 on both sides of one wide part 31.
2' are screwed together, the base thereof is bent into a V-shape 33, and the other wide part 31' is bent into a key shape, one inward and the other outward, to form bent portions 29, 30.

Next, how to assemble each member A, B, C, D, and E will be explained.

Insert the end face with the notches 25, 26, 27 of the horizontal rotation member D into the hole 1d of the bottom plate 1c of the horizontal rotation adjustment member A from the outside, and insert one of the internal threads 22, 23, 24 Accurate horizontal rotation adjustment member A of the screw thread
The ends of the bolts 22a, 23a, 24a, which are located between the recesses 3 and 4 and screwed into these female threads, are brought into pressure contact with the mounting base J.
5, 26, and 27 securely surround the horizontal rotation member D on the outside of the joint between the horizontal rotation adjustment member A and the horizontal rotation member D at a position where the horizontal rotation adjustment member A slightly protrudes inward. Weld. Next, the rising sides 9 and 10 of the elevation adjustment member B are moved toward the side where the recesses 3 and 4 of the horizontal rotation adjustment member A are located on the bent sides 9' and 10', which are the antenna mounting surfaces of the elevation adjustment member B. 10 into the inside of the horizontal rotation adjustment member A, and align the bolt holes 11, 11' with the bolt holes 2, 2' of the horizontal rotation adjustment member A. Next, insert the reinforcing member C into the rising sides 9, 10 from the bent sides 9', 10' of the elevation angle adjusting member B, and insert the reinforcing member C into the bolt holes 11, 11' of the elevation angle adjusting member B. , to match the bolt holes 2 and 2' of the horizontal rotation adjustment member A.

Next, insert the bolt C into the bolt hole 2 of the horizontal rotation adjustment member A, the bolt hole 11 of the elevation adjustment member B, the hole of the reinforcing member C, the bolt hole 11' of the elevation adjustment member B,
The horizontal rotation adjustment member A, the elevation angle adjustment member B, and the reinforcing member C are connected together by passing through the bolt hole 2' of the horizontal rotation adjustment member A and using a spring washer, a washer, and a nut 1. Complete the assembly of the mounting brackets. Next, we will explain the order in which the parabolic antenna BS is attached to a mounting base made of steel pipes planted above ground. The installation is completed by inserting the horizontal rotation member D into the head of the mounting base J, which is firmly constructed on the ground as shown in FIG. , 24a are loosened or temporarily removed, and one wide part 31 of the pipe connector 28 is positioned at the bottom in FIG. The inside and outward bent portions 29 are hooked onto the notches 25, 26, and 27 of the horizontal rotating member D to support them so that they do not fall out, and the mounting is inserted into the inside of the horizontal rotating member D as described above. The upper end of the stand J hits the inward bent portion 30 of the pipe connector 28 and is stopped. And bolts 22a, 23a, 24
Tighten the screws one by one by hand and prepare to fine-tune the azimuth angle of the antenna. This state is shown in FIG. 11, which is an enlarged view from the bottom. When attaching the antenna to the top of a steel tower or to a workpiece such as an assembly frame or pedestal, use the auxiliary stand K shown in Figures 5A and 5B. The auxiliary stand K consists of a horizontal pedestal 33 and a mounting pedestal 34 made of a thick-walled steel pipe that stands upright and protrudes from the horizontal pedestal 33.
Then, in the same manner as explained in connection with FIG.
Insert the horizontal rotation member D into 4.

If the mounting bracket of the present invention is built on the ground or on a structure, or if the mounting base is vertical, the mounting bracket of the BS antenna can be freely rotated 360 degrees horizontally and in the elevation direction.
It has the ability to rotate 150°. If you need an elevation angle of 150 degrees or more, you can rotate it horizontally by 180 degrees to face the opposite direction, so you can freely rotate in any direction in the sky. In the case of BS2, the satellite's position is the position of the sun at 2:00 pm on the day of the vernal or autumnal equinox, so if there is no problem with that direction, it can be as low as possible, and the angle needs to be adjusted sufficiently.

To fine-tune the antenna angle, as shown in Fig. 2, insert the support member 5 of the horizontal rotation adjustment member A into the mounting base J set on the ground, and attach the bolt support plate to the bottom plate 8a of the elevation adjustment member B. Install 35. Insert the elevation adjustment bolt 36 through the hole 6 of the horizontal rotation adjustment member A, insert it into the hole 35' of the bolt support plate 35, and screw the wing nut 37 onto its tip. Next, for azimuth adjustment, the bottom plate 1c of the horizontal rotation adjustment member A
From above, the legs of the azimuth adjustment hardware 38 and the azimuth adjustment device 39 shown in FIGS. 2 and 14 are attached to the horizontal rotation member 5.
diametrically inside. The azimuth adjuster 39 is rotatably fixed to the tip of the bolt 40 without moving in the axial direction, and the azimuth adjuster 38 is screwed into the middle of the bolt 40, so the bolt 40 can be rotated clockwise. Then, since the bolt 40 has a right-hand thread, the azimuth adjusting hardware 38 moves to the right in FIG. Tighten the inner circumferential surface of the After determining the orientation and fixing the horizontal rotation adjustment member A to the mounting base J in this way, tighten the bolts 22
Tighten a, 23a, 24a and install the parabolic antenna.
Set the horizontal angle of BS. Next, to adjust the elevation angle of the parabolic antenna BS, turn the wing nut 37 and tighten the bolt 36, and the parabolic antenna BS will face upwards.Tighten the wing nut 37, and the parabolic antenna BS will face upward.Tighten the wing nut 37, and the parabolic antenna BS will face upward. The antenna BS is directed downward by its own weight and the weight of the elevation adjustment member B.
After adjusting the elevation angle in this way, the elevation angle adjustment member B
The rising sides 1a, 1 of the horizontal angle adjusting member A are adjusted by the bolts 42, 42', 43, 43' and nuts provided in the horizontal angle adjusting member A.
Tighten and secure b. parabolic antenna
Once all the orientations of BS have been determined, tighten each nut by carving a female thread on the inner circumferential surface of the horizontal rotating member D and the outer circumferential surface of the mounting base J using the tatsu pin screws 32 and 32'. Complete the installation by electrically and mechanically tightening the mounting base J. After installation is complete,
Remove the azimuth adjustment bracket, elevation adjustment screw, etc.
This will be used as a tool for the next parabolic antenna construction.

As described above, in the present invention, the support member 5 of the horizontal rotation adjustment member A is inserted into the mounting base J, and the bolts 22a, 2
3a and 24a, insert the pipe connector 28 into the gap between the horizontal rotation member D and the mounting base J, and engage the outward bent portion 29 provided at one end of the pipe connector 28 with one end of the mounting base J. Lock one end of the mounting base J to the inwardly bent portion 30 provided at the other end of the pipe connector 28, and rotate the tatu pin screws 32, 32' attached to the other end of the pipe connector 28 to level the tip. A horizontal rotating member D that protrudes into the gap between the inner circumferential surface of the rotating member D and the outer circumferential surface of the mounting base J.
Since it is configured to be firmly screwed into the inner circumferential surface of the mounting base J and the outer circumferential surface of the mounting base J, after adjusting the horizontal rotation member D by 360 degrees to determine the horizontal angle, tighten the pin screws 32 and 3.
By screwing in 2', the horizontal rotation adjustment member A
This eliminates the free rotation of the parabolic antenna BS and prevents it from electrically and mechanically deteriorating over time, just as if they were integrally molded, and also maintains the horizontal angle of the parabolic antenna BS relative to the broadcasting satellite. ,
By pivoting the elevation adjustment member B to which the reflector of the parabolic antenna BS is fixed to the horizontal rotation adjustment member A, the center of the beam of the parabolic antenna SB is aligned with the direction of the broadcasting satellite, and then the horizontal rotation adjustment member A
and the elevation angle adjustment member B, and has excellent effects such as being able to easily and quickly finely adjust the direction of the parabolic antenna and fixing it over the entire sky.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a partially cutaway front view of the parabolic antenna installed, and Fig. 2A is a partial cutout of the antenna with the azimuth angle fine adjustment fitting and the elevation angle fine adjustment fitting. Fig. 2B is a plan view thereof, Fig. 3A is a plan view of the mounting bracket of the present invention, Fig. 3B is a front view thereof, Figure 3C is a side view thereof, Figure 3D is a bottom view thereof, Figure 4 is a front view of the mounting stand vertically erected on the ground and partially cut away;
Fig. 5A is a plan view of another example of the mounting base with a part cut away, Fig. 5B is its front view, Fig. 6A is a perspective view of the horizontal rotation adjustment member, and Fig. 6B is its front view. , 6th
Figure C is its side view, Figure 6D is its bottom view, Figure 7
Figure A is a perspective view of the elevation angle adjustment member, Figure 7B is a partially cutaway front view thereof, Figure 7C is a side view thereof,
Fig. 7D is a plan view thereof, Fig. 8A is a perspective view of the pipe connector, Fig. 8B is a bottom view thereof, Fig. 8C
is its front view, and FIG. 8D is its side view,
This shows how the Tatsu pin screw is screwed in. Figures 9A and B are front and side views of the reinforcing member, Figure 10A
is a front view of the horizontal rotation member, FIG. 10B is a plan view of the same as above, FIG. 11 is a bottom view showing the state of connection between the horizontal rotation member and the mounting base, and FIG. 12 is a fine adjustment of the elevation angle of the elevation adjustment member. A front view of the bolt, Fig. 13 is a perspective view of the elevation angle fine adjustment bolt support plate, Fig. 14 is a front view of the azimuth angle fine adjustment fitting, and Figs. 15 A and B are an enlarged plan view and enlarged view of the azimuth angle adjustment fitting. A side view, FIGS. 16A, B, and C are an enlarged front view, an enlarged plan view, and an enlarged side view of the orientation adjuster, and FIG. 17 is an explanatory view of the mounting base and the horizontal rotation member fixed with a tatsupin screw. It is. A... Horizontal rotation adjustment member, B... Elevation angle adjustment member, 5... Support member, J... Mounting base, 28... Pipe connector, 29... Outward bent portion of pipe connector, 30... Pipe Inward bent part of connector, 32, 32'... Tatsupin screw.

Claims (1)

[Claims] 1. A horizontal rotation adjustment member A, in which an elevation adjustment member B with a parabolic antenna BS attached to the rising sides 1a and 1b on both sides of a bent rectangular plate 1 is pivoted with a bolt C', and a horizontal rotation adjustment member. In the parabolic antenna azimuth and elevation angle fixing device, which consists of a horizontal rotating member D whose tip is inserted and welded into a hole 1d drilled in the bottom plate 1c of A, and a mounting base J that supports the horizontal rotating member D, the horizontal A bolt 2 fixed to the rotating member D to fix the horizontal rotating member D and the mounting base J
2a, 23a, 24a are screwed, cutouts 25, 26, 27 are formed in the end face of the horizontal rotation member D, and an outwardly facing protruding side 29 and an inwardly facing side for hooking into these cuts 25, 26, 27 are formed. A connecting member E having a protruding side 30 at one end and a wide portion 31 provided at the other end with pin screws 32, 32' is inserted through the gap between the horizontal rotating member D and the mounting base J to connect. The protruding sides 29 of the member E are hooked onto the notches 25, 26, and 27 of the horizontally rotating member D, respectively, and the upper end surface of the mounting base J is locked with the inwardly facing protruding side 30. Tatsu pin screw 3 between mounting base J
Fix the horizontal rotation adjustment member A, the horizontal rotation member D, and the mounting base J by engraving and press-fitting the tips of 2 and 32',
The hole 6 in the bottom plate 1c of the horizontal rotation adjustment member A is attached to the bolt support plate 35 attached to the bottom plate 8a of the elevation angle adjustment member B.
A mounting device for a parabolic antenna, characterized in that a bolt 36 for adjusting the elevation angle is inserted through the parabolic antenna, and the antenna is mounted with a wing nut 7.