JPS5842641B2 - antenna mounting frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improved mounting of antennas, particularly parabolic antennas, on mounts.

A parabolic antenna with a beam pattern used for communication, such as a parabolic antenna for microwave communication, is fixedly mounted on a high antenna installation tower and connected to a transmitting/receiving device in order to reduce interference between communications. Necessary communication is then carried out.

When installing antennas on a tower in this way, it is desirable to fix the antennas so that they are directly facing each other with respect to the antennas of the other opposing station with which communication is required.

Therefore, for example, two upper and lower rings 2 are installed on the outside to surround the steel tower 1 above the steel tower 1 in Fig. 1, and are positioned radially from the center of the tower 1 so that the desired opposing station can be placed. To attach the antenna, first place the mount 3 in the ring 2 direction.
and then the parabolic antenna 4 is attached to this pedestal 3 (or the reverse order may be used).

However, although the antenna 4 attached as described above is generally facing toward the other station, it is extremely rare that the antenna 4 is exactly facing the other station to be suitable for microwave communication. It is difficult.

Therefore, the direction between the parabolic antenna 4 and the pedestal 3 is finely adjusted and then fixed.

For this reason, the screw shaft 41 that attaches the antenna 4 to the pedestal 3 is made tiltable (not shown), and this state is
As shown in FIG. 2, it is arranged on axes B and C that are perpendicular to the vertical and horizontal directions.

Then, by loosening one of the screw shafts 41 on the C-axis and tightening the other, the antenna 4 can be moved slightly in the horizontal direction, and by loosening one of the screw shafts 41 on the B-axis and tightening the other, it can be slightly moved in the vertical direction. .

After the antenna is oriented in a desired direction in this manner, all screw shafts 41 are tightened and fixed.

The pedestal 3' and antenna 4' in FIG. 1 further indicate other antennas attached to the same tower facing other stations.

The antenna installation in the above is based on the weight of the antenna,
It is required to have sufficient strength to support all the forces such as snow and ice adhesion, wind pressure from various directions, and to maintain the antenna's set direction.

The structure of a conventional antenna mounting frame is shown in the perspective view of FIG.

The pedestal 5 has four front frame members 51' forming the front frame 5i surface on which the antenna is attached, and holes 53 for antenna attachment screws in the middle of the connecting plates 52 at the four corners of the frame members and the front frame members 51'. , a vertical member 54' and a horizontal member 54'' of the rear frame 54, which are attached to the rear side and serve as a base, and a connecting member 54''' that connects the vertical member 54' and the horizontal member 54''.
A spacing member 55 disposed between the front frame 51 and the back frame 54, and a frame formed by the front frame 51', the back frame 54', and the spacing member 55 on the side are joined at four corners. □ consisting of a connecting plate 56.

Furthermore, a diagonal member 57 that connects and reinforces the opposite corners of the side surfaces, and a vertical member 54' of the rear frame from the vicinity of the antenna mounting/attachment hole 53 of the front frame 51 on the upper and lower surfaces, a horizontal member 54'', and a spacing member 55. The diagonal member 58 connects and reinforces the area where the front frame 5 is concentrated.
The frame surface of each of the antennas 1 and 1 is reinforced with a diagonal member 59 that connects and reinforces adjacent frame members in the vicinity of the knowledge hole 53.

In this frame, the connecting member is a plate, the frame member and the diagonal member are made of equilateral or scalene angle steel.

Then, as shown in the cross-sectional view of FIG. 4, the antenna mounting screw hole 53 provided in the upper, lower, left, and right intermediate portions of the front frame member 51' is provided with a screw for attaching the antenna 4 to the screw hole 53. Insert the shaft 41 and attach the washer '42 and nut 43 on both sides.
is screwed on to adjust the position of the screw shaft 41 relative to the frame member 51' to adjust the direction of the antenna and fix it.

The above-mentioned frame is; In other words, the easiest configuration is to have the front, back, top, bottom, left and right sides all shaped like a frame, and arrange connecting plates and diagonal members on those faces to maintain the frame shape; □( However, since the back and rear sides are fixed to the strong steel tower ring 2, diagonal members are not provided.) Because the structure itself was box-shaped, it was decided to use fairly large members for each part. This increases the weight of the antenna device as a whole.

In addition, it is troublesome to install the steel tower, and since there are many parts, the assembly time increases and the cost increases.

゛The present invention eliminates the above-mentioned drawbacks and has an extremely simple and rational structure for mounting the antenna which is composed of a minimum number of members. The antenna mountings provided facing each other on the orthogonal axes are each connected in a frame shape by a first straight connecting member, and the antenna mounting on the surface is connected at a predetermined distance in the opposite direction from the side. At a predetermined portion in the direction of each end of a pair of pedestal base materials arranged in parallel with the axis of the part, the antenna mounts are arranged in parallel with the axis of the part. The attachment is characterized in that the second straight connecting members from the parts are connected at approximately the same location.

Embodiments according to the present invention will be described in detail below with reference to the drawings.

FIG. 5 is a perspective view of an embodiment of the present invention, in which the pedestal 6 is provided with antenna mounting portions 610 facing each other on orthogonal axes B and C, respectively, on the same plane. They are connected in a frame shape with a connecting material 62 having a shape.

A pair of mount base materials 63 are provided on the opposite side of the surface constituting the surface and parallel to the axis B at a predetermined distance from the surface. Corner metal fittings 64 are attached near both ends of each of the metal fittings 63, and the metal fittings 64 and the base material 63 in the vicinity of the metal fittings are attached.
Adjacent antenna mounting sections 61 are connected as a set by a second linear coupling member 65, respectively.

Connections are made with bolts and nuts (or rehets).

In addition, all members shall undergo surface treatment to prevent rust.

Note that the upper and lower ends of the base material 63 are connected to the steel tower by connecting members 66 until they are fixed, as will be described later.

Holes 67 for antenna mounting screws are formed on the orthogonal axes B and C of the antenna mounting surface of the antenna mounting portion 61, respectively.

All of the constituent members other than the corner fittings 64 are made of equal angle steel or scalene angle steel.

With the above configuration, a pedestal 6 according to the present invention is attached to the ring 2 of the steel tower 1 in place of the pedestal 3 in FIG.

(Details not shown) This attachment means is, for example, a base material 63.
Insert bolts directly into the respective bolt holes of the ring at the upper and lower ends of the ring, and tighten with nuts.

Alternatively, it may be tightened using U bolts.

The connecting member 66 that connects the base materials may be removed after being fixed to the strong ring 2, but may also be left as is.

For mounting the antenna, the threaded shafts 41 of the antenna 4 are inserted into the holes 67 provided in the member 61 in the same manner as shown in FIG. The frame member 51' and the hole 53 are replaced with the frame member 51' and the hole 53, and the antenna is installed in a bar state by adjusting the orientation of the antenna and then tightening the screws and nuts to fix it.

As described above, in the frame 6 according to the present invention, the antenna is attached to the part 61 and the part to the steel tower is attached, that is, the part near the corner fitting 64, without using any conventional frame members or anything equivalent thereto. The point of application (the attachment part 61) and the point of force support (the 2nd part of the steel tower ring) are connected by a second straight member 65, and the first straight member 62 is connected between the points of application of the force. Because they are connected by chisels, most of all acting forces act on each member as longitudinal tensile or compressive force.

Therefore, it is possible to significantly reduce the number of constituent materials compared to the conventional method, and it is possible to create a mechanically stable structure and force relationship, and since it is a truss structure between each component, it is a member with a small cross-sectional area. can be used.

In the above example, each member was made of angle iron, but instead of steel pipe material,
Furthermore, the joints can be similarly realized by welding, and there is no difference in construction, operation, and effect.

However, when joining by welding, corner fittings are not necessarily required.

The present invention also provides that, as shown in FIG. 5, the members of the second straight member 65 that face each other vertically and horizontally are not parallel to each other when viewed from the surface side, and as shown in FIG. When installing the antenna, look at the mount 7 from the side, anti-
To attach the antenna, connect the □ between the parts 71 (where 77 is a hole for attaching the antenna) in a frame shape with the first straight 9 connecting material 72, and install the antenna horizontally on the side facing away from the surface. The antenna is attached to parts 71, 71. A pair of mount base materials 73, 73 are arranged vertically parallel to each other on the outside of the section 7L71, and the antennas are mounted in a direction perpendicular to both ends of the base materials 73 at positions parallel to the horizontal direction on the outside of the section 7L71. 7
4, and this position 7'4 and the antenna mounting portion 71 are respectively connected by second straight connecting members 75.

7.6 is an auxiliary connecting member that connects the left and right base materials 13 in the vicinity of the holding position 74.

Therefore, the member 75 is connected to the antenna mounting portion 71 and the first connecting member 72 by forming a triangle that extends outward between the base member 73, the support position 74, and the connecting member 76. ing.

In other words, the antenna is attached with the surface of the part 71 as the upper side, and the base material 7
When viewed from the side with the surface formed by 3 and the bonding material 76 as the base, the second bonding material 75 makes it appear exactly trapezoidal when viewed from any side.

Even with such a configuration, there is no difference in the effects of the present invention.

As explained in detail above, in the antenna mounting of the present invention, the mount is configured to directly connect the antenna mounting section and the tower mounting section using the minimum mechanically necessary members,
By applying a simple axial force to each member, the number of parts can be significantly reduced compared to conventional methods, and the structure can be constructed using members with a small cross-sectional area, resulting in a significant reduction in weight, ease of manufacturing, and cost reduction. This has become possible and the practical effects are remarkable.

[Brief explanation of drawings]

Figure 1 is a schematic side view of an example of how the antenna is attached to a steel tower via a pedestal, and Figure 2 is a view taken along arrows A-N in Figure 1, showing how the antenna is attached to the screw shaft. Fig. 3 is a perspective view of a pedestal for conventional antenna mounting, and Fig. 4 shows the main parts 1. A side cross section, FIG. 5 is a perspective view of one embodiment of the antenna mounting frame according to the present invention, and FIG. 6 is a conceptual front view of another embodiment of the present invention. In the figure, 1 is the steel tower, 2 is the ring, 3 is the antenna mounting frame, 4 is the antenna, 5, 6, 7 is the antenna mounting frame, 41 is the screw shaft, 61 is the antenna mounting part, and 62 is the antenna mounting frame. a first linear coupling member; 63, a pedestal base; 64, a corner fitting;
Reference numeral 65 indicates a second straight coupling material, 66 indicates a coupling material, and 67 indicates a hole for an antenna mounting screw.

Claims (1)

[Claims] 1. The antenna mountings, which are provided facing each other on orthogonal axes on the same plane, are connected in a frame shape by a first straight connecting member, and the antenna mounting on the surface is At a predetermined distance in the direction opposite to the side, the antenna mounting is arranged at a predetermined portion in the direction of each end of a pair of pedestal base materials arranged parallel to the axis of the part. The antenna mounting frame is characterized in that the antenna mounting portions adjacent to each other are formed by connecting second linear coupling members from the portions at substantially the same location.