JPH028424Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reflecting mirror assembly and adjustment device that can simultaneously perform assembly and adjustment of a main reflecting mirror and a sub-reflecting mirror.

A Cassegrain antenna for satellite communications consists of a main reflector, a sub-reflector, a primary radiator, etc. Usually, the sub-reflector has a monolithic structure, but the main reflector can range from monolithic to monolithic structures to those constructed by connecting a plurality of reflecting plates. When installing such an antenna, not only the mirror surface accuracy of the main reflector and sub-reflector, but also the positional accuracy of the reflectors relative to each other is specified, so the assembly and adjustment of these main and sub-reflectors must be carried out. is important.

Conventionally, high-precision transit (theodolite) and JIS1 were used to assemble the main reflector and adjust the position of the sub-reflector.
Assemblies and adjustments were made by surveying using special instruments such as grade steel tape measures, theodolite mounts, and scribers. Prior to surveying, it was necessary to accurately level the main reflector and set a surveying sight point by marking the mirror surface of the main reflector at a predetermined position using a steel tape measure. . Furthermore, theodolites were not easy to handle, and measurements required skilled technicians. Further, since the adjustment of the sub-reflector was carried out separately after the adjustment of the main reflector, much time and labor was required to assemble and adjust the reflector.

Based on the above considerations, the present invention aims to provide a reflector assembly and adjustment device that allows even an unskilled person to assemble and adjust the main reflector and the sub-reflector simultaneously in a short time. shall be.

For this purpose, the adjusting device of the present invention includes a rotatable shaft that is supported between the center positions of a main reflecting mirror and a sub-reflecting mirror, and a rotatable shaft that extends sideways from both ends of the shaft, and that extends along with the shaft. a support rod that rotates around the center; a main body portion is attached to each of the support rods, and a contact tip is in contact with the mirror surface of each of the main reflecting mirror and the sub-reflecting mirror, and the main body portion is attached to each of the supporting rods, and the tip of the contactor is in contact with the mirror surface of each of the main reflecting mirror and the sub-reflecting mirror, and and a dial gauge for measuring contact point trajectories of the respective mirror surfaces of the main reflecting mirror and the sub-reflecting mirror, and measuring the contact points of the main reflecting mirror and/or the sub-reflecting mirror according to the readings of the dial gauge while rotating the shaft. It is designed to assemble and adjust the reflecting mirror.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a cross-sectional view of an antenna equipped with an adjustment device according to an embodiment of the present invention. Note that this figure is a cross-section taken along the diameter of the main reflecting mirror. In this figure, the main reflecting mirror 21 is assembled on the back support structure 20, and the sub-reflecting mirror 23 is attached to the mirror surface 21a side of the main reflecting mirror 21 by a sub-reflecting mirror post 22. A reflector assembly and adjustment device, generally designated by reference numeral 10, is rotatably incorporated via a bearing 7 at the base end and a pin 8 at the tip so as to connect the center of the main reflector 21 and the center of the sub-reflector 23. . Figure 2 shows a reflector assembly and adjustment device 10, which is the main part of this invention.
FIG. In FIG. 2, the assembly and adjustment device 10 has a shaft 1 rotatably supported at the center of the main and sub-reflectors, and a pin 8 on the top of the shaft 1 that can slide up and down with little backlash. A reflector assembly and adjustment device 10 is inserted into the lower part of the shaft 1.
A bearing 7 is incorporated to support the weight of the shaft 1 and rotate it around the shaft 1 without play. A support rod 2 is extended from the upper part of the shaft 1, and a support rod 3 is extended laterally from the lower part of the shaft 1, and the tips of the support rods 2 and 3 are connected to each other.
As a result, the shaft 1 and the support rods 2 and 3 form a triangular structure. An arm 4 is fixed to the upper part of the support rod 2, and a dial gauge 5 that comes into contact with the sub-reflector 23 is attached to the tip of the arm 4. A dial gauge 6 that comes into contact with the mirror surface 21 of the main reflecting mirror 21 is attached to the tip of the support rod 3. 5a and 6a are contacts of each dial gauge 5 and 6.

To assemble and adjust the reflector, the main reflector 21, the sub-reflector 23, and the reflector assembly and adjustment device 10 are assembled in the state shown in FIG. First, zero setting of dial gauge 5 and dial gauge 6 is performed. Next, while rotating the reflector assembly and adjustment device 10 around the center of the reflector, the main reflector 21 is moved up and down using the back support structure 20 as a fulcrum so that the deflection of the dial gauge 6 satisfies the standard value. Adjust the mirror surface. After completing the mirror surface adjustment of the main reflecting mirror 21,
The reflector assembly and adjustment device 10 is turned again to adjust the sub-reflector 23 using the sub-reflector post 22 as a fulcrum so that the deflection of the dial gauge 5 falls within the standard value. By performing the above operations, the assembly and adjustment of the reflecting mirror can be performed easily and in a short time.

FIG. 3 is a side view showing an application example of FIG. 2.
In FIG. 3, a arm 30 is fixed to the support rod 3 by a bolt 32 and to the support rod 2 by a bolt 33 near the dial gauge 6.
Another dial gauge 31 is attached to the tip of the dial. The armrest 30 has a structure that allows the bolt 32 to be used as the rotation axis by removing the bolt 33, so when rotating the reflector assembly and adjustment device, it is possible to avoid obstacles such as the sub-reflector support. Even if something comes up, you can avoid it.

As explained above, according to the present invention, a high-precision transit (theodolite), a JIS grade 1 steel tape measure,
Even an unskilled person can easily and quickly repair the main reflector without using special equipment such as a theodolite mount or scriber needle, and without the need for marking the main reflector surface or surveying by skilled technicians. Since the assembly and adjustment of the auxiliary reflector and the sub-reflector can be performed at the same time, assembly costs can be reduced. Although the present invention has been described above with respect to one preferred embodiment thereof, it is merely an example, and it goes without saying that the present invention is not limited only to the embodiment described here. It is.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an antenna equipped with an assembly and adjustment device according to an embodiment of the invention, Fig. 2 is a side view of the reflector assembly and adjustment device shown in Fig. 1, and Fig. 3 is a cross-sectional view of an antenna equipped with an assembly and adjustment device according to an embodiment of the invention. FIG. 7 is a side view showing another embodiment. 1... shaft, 2, 3... support rod, 4, 30... arm, 5, 6, 31... dial gauge, 7... bearing, 8... pin, 10... reflector assembly and adjustment device,
20... Rear support structure, 21... Main reflecting mirror, 22
...Sub-reflector post, 23...Sub-reflector.

Claims (1)

[Scope of utility model registration request] A rotatable shaft pivotally supported between the center positions of the main reflecting mirror and the sub-reflecting mirror, a support rod extending laterally from both ends of the shaft and rotating together with the shaft around the center of the shaft, and a main body. The contacts are attached to each of the support rods, and the tips of the contacts are in contact with the respective mirror surfaces of the main reflecting mirror and the sub-reflecting mirror, and as the shaft rotates, the main reflecting mirror and the sub-reflecting mirror are rotated. 1. A reflector assembly and adjustment device comprising: a dial gauge for measuring a contact point locus on a mirror surface;