A turntable for GNSS antenna testing

Abstract

The utility model relates to a kind of rotary table for GNSS antenna test, belong to antenna test technical field, a kind of rotary table for GNSS antenna test, including base, the inside is provided with moving structure, the moving structure bottom is provided with rotating structure, rotating structure upside is rotatably connected with rotating structure, the rotating structure includes the support plate located rotating structure upside, the rotating structure includes the third servo motor being set in rotating structure side wall, the third servo motor output end is fixedly connected with rotating lever, the rotating lever top end is fixedly connected with support plate, the moving structure includes with the first servo motor of base inner wall fixed connection, the first servo motor output end is fixedly connected with gear box, gear box one side is rotatably connected with the screw rod rotatably connected with base inner wall, rotate by the above structure using third servo motor electric rotating lever and support plate, it is convenient for subsequent GNSS antenna to carry out the test of different angle.

Description

Technical Field

[0001] This utility model belongs to the technical field of antenna testing, specifically relating to a turntable for testing GNSS antennas. Background Technology

[0002] GNSS antennas are the core components of satellite navigation systems for signal reception. Through multi-constellation signal compatibility, centimeter-level positioning technology, and anti-interference design, they provide support for high-precision positioning in complex environments. The controllable positioning of the antenna under test in free space is achieved by rotating the turntable, which is used to measure parameters such as radiation pattern and gain.

[0003] For example, in the Chinese utility model with announcement number CN221631508U and titled "A Three-Axis Turntable for Antenna Testing", although the rotating slot is driven to rotate through the cooperation of the worm gear and worm, which facilitates the subsequent testing of the antenna in different directions, it cannot change the angle between the antenna and the ground, which is not conducive to testing antennas at different angles. Utility Model Content

[0004] The purpose of this invention is to provide a GNSS antenna test turntable with a simple structure and reasonable design in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A GNSS antenna testing turntable includes a base, a movable structure inside the base, a rotating structure at the bottom of the movable structure, and a rotating structure rotatably connected to the upper side of the rotating structure. The rotating structure includes a support plate located on the upper side of the rotating structure.

[0007] As a further optimization of this utility model, the rotating structure includes a third servo motor disposed on the side wall of the rotating structure, and a rotating rod is fixedly connected to the output end of the third servo motor. The support plate is fixedly connected to the rotating rod.

[0008] As a further optimization of this utility model, the moving structure includes a first servo motor fixedly connected to the inner wall of the base, a gearbox connected to the output end of the first servo motor, a threaded rod rotatably connected to the inner wall of the base on one side of the gearbox, a sliding plate threadedly connected to the outer side of the threaded rod, and the rotating structure located on the upper side of the sliding plate.

[0009] As a further optimization of this utility model, the rotating structure includes a turntable rotatably connected to the inside of the skateboard. A second servo motor is fixedly connected to the bottom of the turntable and to the bottom of the skateboard. A worm gear rotatably connected to the bottom of the skateboard is fixedly connected to the output end of the second servo motor. A worm wheel fixedly connected to the bottom of the turntable is engaged on the outside of the worm gear. A support frame is fixedly connected to the upper surface of the turntable. The rotating structure is located on the upper side of the support frame. The outside of the support frame is fixedly connected to one side of a third servo motor.

[0010] As a further optimization of this utility model, the base is a rectangular frame, and support legs are fixedly connected to the four corners of the bottom of the base.

[0011] As a further optimization of this utility model, the threaded rod and the guide rod are arranged in parallel.

[0012] The beneficial effects of this utility model are as follows: This utility model uses the cooperation of a first servo motor, a gearbox, and a threaded rod to drive the slide plate to move, which facilitates the adjustment of the GMSS antenna position. Then, the cooperation of a second servo motor, a worm gear, and a worm wheel drives the GNSS antenna to rotate, which facilitates all-round detection. Finally, the cooperation of a third servo motor and a rotating rod adjusts the angle of the GNSS antenna, which facilitates the optimization of the GNSS antenna's signal reception performance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the second overall structure of this utility model;

[0015] Figure 3 This is a bottom view of the entire utility model.

[0016] In the diagram: 1. Base; 2. Moving structure; 201. First servo motor; 202. Gearbox; 203. Threaded rod; 204. Slide plate; 3. Rotating structure; 301. Second servo motor; 302. Worm gear; 303. Turntable; 304. Worm wheel; 305. Support frame; 4. Rotating structure; 401. Third servo motor; 402. Rotating rod; 403. Support plate; 5. Guide rod. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0018] Example 1

[0019] like Figure 1 , Figure 3 As shown, a GNSS antenna testing turntable includes a base 1, which is a rectangular frame. Support legs are fixedly connected to the four corners of the bottom of the base 1. A first servo motor 201 is fixedly connected to the inner wall of the base 1. In this embodiment, the first servo motor 201 is model 80ST-07530, but this can be changed according to actual conditions. A gearbox 202 is connected to the output end of the first servo motor 201. A threaded rod 203 is rotatably connected to one side of the gearbox 202. The threaded rod 203 is rotatably connected to the inner wall of the base 1, and a sliding plate 2 is threadedly connected to the outer side of the threaded rod 203. 04. The output of the first servo motor 201 drives the gear inside the gearbox 202 to rotate. Then, the gear inside the gearbox 202 drives the threaded rod 203 to rotate. The rotation of the threaded rod 203 drives the slide plate 204 to move, which facilitates the subsequent movement of the GNSS antenna (not shown in the figure). The bottom of the slide plate 204 is slidably connected to the guide rod 5. The guide rod 5 is fixedly connected to the inside of the base 1. When the slide plate 204 moves, the guide rod 5 guides the slide plate 204 to prevent the slide plate 204 from tilting during movement.

[0020] like Figure 1 and Figure 2 As shown, a turntable 303 is rotatably connected inside the slide plate 204. A second servo motor 301, fixedly connected to the inner wall of the base 1, is located at the bottom of the turntable 303. In this embodiment, the second servo motor 301 is model 80ST-07530, but this can be modified according to actual conditions. A worm gear 302, rotatably connected to the bottom of the slide plate 204, is fixedly connected to the output end of the second servo motor 301. A worm wheel 304, fixedly connected to the bottom of the turntable 303, meshes with the outer side of the worm gear 302. The second servo motor 301 drives the worm wheel 304 to rotate, and then the worm wheel 304 and worm gear 302 work together to rotate the turntable 303, facilitating the subsequent rotation of the GNSS antenna. The rotating turntable 303 has a support frame 305 fixedly connected to its upper surface. The outer side of the support frame 305 is fixedly connected to one side of the third servo motor 401. In this embodiment, the model of the third servo motor 401 is 80ST-07530, but it can be changed according to the actual situation. The output end of the third servo motor 401 is fixedly connected to a rotating rod 402. The top of the rotating rod 402 is fixedly connected to a support plate 403. The GNSS antenna is fixed to the support plate 403 with screws. Then, the third servo motor 401 drives the rotating rod 402 to rotate and adjust the angle of the GNSS antenna. This can make the rays from the antenna to the boundary of this community different from the rays from the boundary of the interfered community, thus minimizing the interference.

[0021] It should be noted that this GNSS antenna testing turntable, during use, uses a support plate 403 to fix the GNSS antenna (not shown in the figure). Then, the first servo motor 201 and the gearbox 202 work together to drive the threaded rod 203 to rotate. The rotation of the threaded rod 203 changes the position of the slide plate 204, adjusting the position of the GNSS antenna. Then, the second servo motor 301 drives the second servo motor 301 to rotate. The second servo motor 301 and the worm gear 304 work together to drive the turntable 303 to rotate. The rotation of the turntable 303 changes the azimuth of the GNSS antenna. Finally, the third servo motor 401 drives the rotating rod 402 to rotate. The rotation of the rotating rod 402 adjusts the angle of the GNSS antenna. By adjusting the angle and azimuth of the GNSS antenna, it is convenient to conduct all-round testing of the GNSS antenna.

[0022] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A turntable for testing GNSS antennas, comprising a base (1), characterized in that, The base (1) is provided with a movable structure (2) inside, and a rotating structure (3) is provided at the bottom of the movable structure (2). A rotating structure (4) is rotatably connected to the upper side of the rotating structure (3). The rotating structure (4) includes a support plate (403) located on the upper side of the rotating structure (3).

2. The GNSS antenna testing turntable according to claim 1, characterized in that: The rotating structure (4) includes a third servo motor (401) disposed on the side wall of the rotating structure (3), and a rotating rod (402) is fixedly connected to the output end of the third servo motor (401). The support plate (403) is fixedly connected to the rotating rod (402).

3. The GNSS antenna testing turntable according to claim 1, characterized in that: The moving structure (2) includes a first servo motor (201) fixedly connected to the inner wall of the base (1). The output end of the first servo motor (201) is connected to a gearbox (202). A threaded rod (203) rotatably connected to the inner wall of the base (1) is connected to one side of the gearbox (202). A sliding plate (204) is threadedly connected to the outer side of the threaded rod (203). The rotating structure (3) is located on the upper side of the sliding plate (204).

4. The turntable for GNSS antenna testing according to claim 3, characterized in that: The rotating structure (3) includes a turntable (303) rotatably connected to the inside of the slide plate (204). A second servo motor (301) is fixedly connected to the bottom of the turntable (303) and the bottom of the slide plate (204). The output end of the second servo motor (301) is fixedly connected to a worm gear (302) rotatably connected to the bottom of the slide plate (204). A worm wheel (304) fixedly connected to the bottom of the turntable (303) meshes with the outside of the worm gear (302). A support frame (305) is fixedly connected to the upper surface of the turntable (303). The rotating structure (4) is located on the upper side of the support frame (305). The outside of the support frame (305) is fixedly connected to one side of the third servo motor (401).

5. The turntable for GNSS antenna testing according to claim 3, characterized in that: The bottom of the skateboard (204) is slidably connected to a guide rod (5) that is fixedly connected to the inside of the base (1).

6. A GNSS antenna testing turntable according to claim 5, characterized in that: The base (1) is a rectangular frame, and support legs are fixedly connected to the four corners of the bottom of the base (1).

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