Radar antenna test rotary table

Abstract

A radar antenna test rotary table comprises a base, a rotary table body and a workbench, the rotary table body and a supporting seat are fixed to the upper portion of the base, the workbench is fixed to the upper portion of the rotary table body, and an angle scale is fixed to the outer side of the supporting seat; a transmission shaft of the rotating table is installed on the supporting base, the transmission shaft coaxially penetrates through the angle scale and then is provided with a hand wheel, and a pointer is coaxially fixed to the hand wheel. The hand wheel is rotated to drive the working table to rotate through the rotating table, and the rotating angle of the working table can be controlled through scales indicated on the angle scale by the pointer. The utility model aims to overcome the defects in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of radar antenna testing, in particular to a radar antenna testing turntable. Background Art

[0002] The radar antenna is cylindrical in shape, with a diameter of 1000㎜ and a height of 1200㎜. During debugging, it needs to be rotated 360° around the central axis for testing. After rotating at a certain angle, the data of the current position is tested, and then it is rotated at another angle and continues to measure until all measurement points are tested. In order to meet the above debugging requirements, the antenna needs to be placed on a turntable that can rotate 360° and control the rotation angle. However, the existing turntable is small in size, cannot be placed, has a small load, and is difficult to rotate. In particular, the rotation angle of the turntable cannot be accurately controlled, and cannot meet the test of the radar antenna rotating 360 degrees to any angle. Utility Model Content

[0003] The utility model provides a radar antenna test turntable to overcome the shortcomings of the prior art.

[0004] The technical scheme adopted by the utility model is: a radar antenna test turntable, comprising a base, a rotating table, and a workbench, wherein the rotating table and a support seat are fixed above the base, the workbench is fixed above the rotating table, and an angle disk is fixed on the outer side of the support seat; a transmission shaft of the rotating table is installed on the support seat, and a hand wheel is installed after the transmission shaft coaxially passes through the angle disk, and a pointer is coaxially fixed on the hand wheel; the hand wheel is rotated to drive the workbench to rotate through the rotating table, and the rotation angle of the workbench can be controlled by the scale indicated by the pointer on the angle disk.

[0005] The workbench is in a disc shape and its diameter is larger than the outer diameter of the radar antenna. The base is also in a disc structure and its diameter is larger than the outer diameter of the rotating platform.

[0006] The base and the workbench are both provided with a plurality of weight-reducing holes.

[0007] The base is fixedly connected to the lower end of the rotating table through a plurality of evenly distributed lower support columns; the workbench is fixedly connected to the upper end of the rotating table through a plurality of evenly distributed upper support columns.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] 1. The utility model arranges a workbench on the upper end of the rotating table for placing the radar antenna, and realizes accurate rotation of the rotating table at any angle through the cooperation of the pointer arranged on the hand wheel and the dividing plate, thereby meeting the test of the radar antenna at any angle within 360 degrees.

[0010] 2. The utility model can adjust the height of the workbench by replacing the upper and lower support columns to meet the technical requirements of different types of radar antenna tests.

[0011] 3. The utility model has a simple structure, is easy to operate, and has a low cost, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a partial cross-sectional schematic diagram of the structure of the utility model;

[0014] Figure 3 yes Figure 2 Schematic diagram of the cross-section at AA in the middle. DETAILED DESCRIPTION

[0015] The following is combined with Figure 1-3 The utility model is described in detail with specific implementation modes.

[0016] A radar antenna test turntable comprises a base 1, a rotating table 2, and a workbench 4. The rotating table 2 and a support seat 3 are fixed above the base 1, the workbench 4 is fixed above the rotating table 2, and an angle disk 5 is fixed on the outer side of the support seat 3; a transmission shaft 9 of the rotating table 2 is installed on the support seat 3, and a hand wheel 6 is installed after the transmission shaft 9 coaxially passes through the angle disk 5, and a pointer 7 is coaxially fixed on the hand wheel 6; the hand wheel 6 is rotated to drive the workbench 4 to rotate through the rotating table 2, and the rotation angle of the workbench 4 can be controlled by the scale indicated by the pointer 7 on the angle disk 5.

[0017] Furthermore, the workbench 4 is in a disc shape and its diameter is larger than the outer diameter of the radar antenna, and the base 1 is also in a disc structure and its diameter is larger than the outer diameter of the rotating table 2 .

[0018] Furthermore, in order to reduce weight and facilitate movement, weight-reducing holes 8 are provided on the base 1 and the workbench 4 .

[0019] In one embodiment, the base 1, the rotating platform 2, the workbench 4, and the support seat 3 are all made of aluminum alloy; the rotating table 2 is a worm gear rotating table 2, and the rotating table 2 can be purchased from the market with appropriate specifications.

[0020] In one embodiment, the base 1 is fixedly connected to the lower end of the rotating platform 2 through ten evenly distributed lower support columns 10; the workbench 4 is fixedly connected to the upper end of the rotating platform 2 through eight evenly distributed upper support columns 11. When in use, support columns of different heights can be replaced according to the actual needs of the antenna to be tested to achieve signal receiving and transmitting performance tests of cylindrical antennas of different models and specifications.

[0021] When testing the antenna, first, place the above-mentioned tooling on the test site, then place the cylindrical antenna on the workbench 4, fix the dial indicator seat on the base 1 so that the dial indicator head contacts the outer surface of the cylindrical antenna, rotate the workbench 4 by the handwheel 6, adjust the cylindrical antenna to be concentric with the workbench 4, remove the dial indicator, fix the signal receiving and sending measuring instrument on the base 1, and start the signal receiving and sending measuring instrument. At this time, rotate the handwheel 6 so that the pointer 7 indicates the zero degree position of the angle disk 5, calculate the number of revolutions of the handwheel 6 according to the test requirements, the number of revolutions of the handwheel 6 is calculated according to the transmission ratio of the worm gear pair in the rotating platform 2, rotate the handwheel 6 according to the calculated number of revolutions so that the workbench 4 drives the antenna to rotate, and the pointer indicates the corresponding scale on the angle disk, observe and record the measurement data of the antenna receiving and sending signals at this working angle, and so on, complete the test of all angles in the test requirements, and record the measurement data of the position, and then compare all the measurement data with the design requirement data to know the performance of the antenna receiving and sending signals.

[0022] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A radar antenna test turntable, characterized in that: The invention comprises a base (1), a rotating table (2) and a workbench (4); the rotating table (2) and a support seat (3) are fixed on the top of the base (1); the workbench (4) is fixed on the top of the rotating table (2); an angle disc (5) is fixed on the outer side of the support seat (3); a transmission shaft (9) of the rotating table (2) is mounted on the support seat (3); a hand wheel (6) is mounted after the transmission shaft (9) coaxially passes through the angle disc (5); a pointer (7) is coaxially fixed on the hand wheel (6); the hand wheel (6) is rotated to drive the workbench (4) to rotate through the rotating table (2); and the rotation angle of the workbench (4) can be controlled by the scale indicated by the pointer (7) on the angle disc (5).

2. The radar antenna test turntable according to claim 1, characterized in that: The workbench (4) is in the shape of a disk and its diameter is larger than the outer diameter of the radar antenna; the base (1) is also in the shape of a disk and its diameter is larger than the outer diameter of the rotating platform (2).

3. The radar antenna test turntable according to claim 2, characterized in that: The base (1) and the workbench (4) are both provided with a plurality of weight-reducing holes (8).

4. The radar antenna test turntable according to claim 1, 2 or 3, characterized in that: The base (1) is fixedly connected to the lower end of the rotating table (2) via a plurality of evenly distributed lower support columns (10); and the workbench (4) is fixedly connected to the upper end of the rotating table (2) via a plurality of evenly distributed upper support columns (11).

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