Antenna performance testing device

Abstract

The utility model discloses an antenna performance testing device, which belongs to the technical field of unmanned aerial vehicle testing equipment, and comprises a device main body, the device main body comprises a fixing part, a mounting part and an electric drive steering engine, and the mounting part comprises a mounting plate and a mounting nut; the fastening structure comprises a fastening block, a mounting cylinder, a rotating disc, a worm gear ring and a rotating worm, the mounting cylinder is provided with a sliding groove, and the rotating disc is provided with a moving groove; according to the utility model, through the arrangement of the fastening structure, a user places one end part, with a threaded hole, of the omnidirectional antenna among a plurality of fastening blocks, and the worm is rotated to rotate around the axial direction of the worm so as to drive the rotating disc which is coaxially installed with the worm gear ring to rotate, so that the plurality of fastening blocks move towards the direction close to the circle center of the rotating disc at the same time; and until the circumferential end surfaces of the plurality of fastening blocks are in contact with the circumferential side wall of the omnidirectional antenna, the axial direction of the omnidirectional antenna coincides with the axial direction of the mounting nut, so that the fastening force between the omnidirectional antenna and the mounting nut is ensured to be uniformly distributed.

Description

Technical Field

[0001] This utility model belongs to the technical field of unmanned aerial vehicle (UAV) testing equipment, specifically relating to an antenna performance testing device. Background Technology

[0002] The application of drones in modern society is becoming increasingly widespread. For example, in the military field, drones can perform high-altitude reconnaissance missions, collect intelligence, and monitor enemy activities; in the scientific research process, drones can be used to collect meteorological data to help scientists study climate change; the airborne antenna of a drone refers to the antenna installed on the drone for transmitting and receiving radio waves, enabling the drone to communicate and transmit data with ground control stations, other drones, or satellites.

[0003] UAV airborne antennas are generally omnidirectional antennas. Antenna performance testing equipment is crucial for evaluating the radiation characteristics of omnidirectional antennas in three-dimensional space. In the actual use of the testing equipment, since the UAV will shift during flight, it is necessary to ensure that the antenna is installed stably. This is not only related to the accuracy of the test data, but also a necessary condition for ensuring the safe flight of the UAV. Therefore, antenna performance testing equipment is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an antenna performance testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an antenna performance testing device, comprising:

[0006] The main body of the device includes a fixing part fixed to the arm of the UAV, a mounting part for connecting an omnidirectional antenna, and an electric drive servo. The fixing part is disposed above the mounting part. The mounting part includes a mounting plate and a mounting nut. The mounting nut is detachably mounted on the lower surface of the mounting plate. The upper end of the electric drive servo is connected to the fixing part, and the lower end of the electric drive servo is connected to the mounting part.

[0007] A fastening structure includes fastening blocks, a mounting cylinder rotating disk, a worm gear ring, and a rotating worm. Multiple fastening blocks are arranged circumferentially around the center of the rotating disk. The upper end of the mounting cylinder is fixedly mounted to the lower surface of the mounting plate. The lower surface of the mounting cylinder has multiple sliding grooves, and the fastening blocks are slidably disposed in these grooves. The rotating disk is rotatably disposed between the mounting plate and the mounting cylinder, and has multiple inclined moving grooves for the fastening blocks to move. The rotating worm is rotatably disposed on the mounting cylinder. The worm gear ring is coaxially connected to the rotating disk, and the rotating worm meshes with the worm gear ring.

[0008] As a preferred embodiment, the main body of the device further includes a locking pin, the rotating worm gear has a plurality of spaced first locking holes, the mounting cylinder has a second locking hole with the same diameter as the first locking holes, and the locking pin is threadedly connected to the first locking holes and the second locking holes.

[0009] As a preferred embodiment, the fastening blocks extend downward from the mounting cylinder by a certain distance, and the opposite end faces of the plurality of fastening blocks are set in an arc shape.

[0010] As a preferred embodiment, the fastening structure further includes a rotating handle connected to one end of the rotating worm gear, and the rotating handle is located outside the mounting cylinder.

[0011] As a preferred embodiment, the mounting nut, the mounting cylinder, and the rotating disk are all coaxially arranged, and the lower end of the mounting nut is located at a predetermined distance above the lower end of the fastening block.

[0012] As a preferred embodiment, the fixing part includes a pair of fixing rings and a fixing screw, wherein one of the fixing rings is mounted on the upper end of the electric drive servo, and the fixing screw is connected to the pair of fixing rings.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features a fastening structure comprising fastening blocks, a mounting cylinder rotating disk, a worm gear ring, and a rotating worm. Multiple fastening blocks are circumferentially distributed around the center of the rotating disk. The mounting cylinder has multiple sliding grooves, the rotating disk has a moving groove, the worm gear ring is coaxially connected to the rotating disk, and the rotating worm meshes with the worm gear ring. The user places the threaded end of the omnidirectional antenna between the fastening blocks. The rotating worm rotates around its own axis, causing the rotating disk to rotate. This causes the fastening blocks to move simultaneously towards the center of the rotating disk until the circumferential end faces of the fastening blocks contact the circumferential sidewall of the omnidirectional antenna. At this point, the axial direction of the omnidirectional antenna coincides with the axial direction of the mounting nut, ensuring a uniform distribution of the fastening force between the omnidirectional antenna and the mounting nut.

[0015] This invention features a locking post, a rotating worm gear with multiple spaced first locking holes, and a mounting cylinder with a second locking hole of the same diameter as the first locking holes. The locking post is threadedly connected to the first and second locking holes. The user rotates the omnidirectional antenna to make the threaded hole of the omnidirectional antenna threadedly connected to the mounting nut. Finally, the user rotates the rotating handle to make the multiple fastening blocks and the circumferential sidewall of the omnidirectional antenna contact more tightly, and to thread the locking post to the first and second locking holes, ensuring a more secure and stable connection between the omnidirectional antenna and the mounting nut, thereby guaranteeing the accuracy of the test data. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention from one angle;

[0017] Figure 2 This is a three-dimensional schematic diagram of the present invention from another angle;

[0018] Figure 3 This is a top view of the present invention.

[0019] Figure 4 This is a structural diagram of the fastening structure of this utility model from one angle;

[0020] Figure 5 This is a structural diagram of the fastening structure of this utility model from another angle.

[0021] In the diagram: 1. Main body of the device; 11. Fixing part; 111. Fixing ring; 112. Fixing screw; 12. Mounting part; 121. Mounting plate; 122. Mounting nut; 13. Electric drive servo motor; 14. Locking pin; 2. Fastening structure; 21. Fastening block; 22. Mounting cylinder; 221. Slide groove; 222. Second locking hole; 23. Rotating disk; 231. Moving groove; 24. Worm gear ring; 25. Rotating worm; 251. First locking hole; 26. Rotating handle. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0024] Please see Figure 1-5 This utility model provides an antenna performance testing device, comprising:

[0025] The device body 1 includes a fixing part 11 fixed to the arm of the UAV, a mounting part 12 for connecting an omnidirectional antenna, and an electric drive servo motor 13. The fixing part 11 is disposed above the mounting part 12. The mounting part 12 includes a mounting plate 121 and a mounting nut 122. The mounting nut 122 is detachably mounted on the lower surface of the mounting plate 121. The upper end of the electric drive servo motor 13 is connected to the fixing part 11, and the lower end of the electric drive servo motor 13 is connected to the mounting part 12.

[0026] Fastening structure 2 includes fastening blocks 21, mounting cylinder 22, rotating disk 23, worm gear ring 24, and rotating worm 25. Multiple fastening blocks 21 are provided, and the multiple fastening blocks 21 are distributed circumferentially around the center of the rotating disk 23. The upper end of the mounting cylinder 22 is fixedly installed on the lower surface of the mounting plate 121. The lower surface of the mounting cylinder 22 has multiple sliding grooves 221, and the fastening blocks 21 are slidably disposed in the sliding grooves 221. The rotating disk 23 is rotatably disposed between the mounting plate 121 and the mounting cylinder 22. The rotating disk 23 has multiple inclined moving grooves 231 for moving the fastening blocks 21. The rotating worm 25 is rotatably disposed on the mounting cylinder 22. The worm gear ring 24 is coaxially connected to the rotating disk 23, and the rotating worm 25 meshes with the worm gear ring 24.

[0027] The main body 1 of the device also includes a locking pin 14, the rotating worm gear 25 has a plurality of spaced first locking holes 251, the mounting cylinder 22 has a second locking hole 222 with the same diameter as the first locking hole 251, and the locking pin 14 is threadedly connected to the first locking hole 251 and the second locking hole 222.

[0028] The fastening block 21 extends downward from the mounting cylinder 22 by a certain distance, and the opposite end faces of the multiple fastening blocks 21 are set in an arc shape;

[0029] The fastening structure 2 also includes a rotating handle 26, which is connected to one end of the rotating worm 25 and is located outside the mounting cylinder 22;

[0030] The mounting nut 122 is coaxially arranged with the mounting cylinder 22 and the rotating disk 23, and the lower end of the mounting nut 122 is located at a predetermined distance above the lower end of the fastening block 21.

[0031] The fixing part 11 includes a pair of fixing rings 111 and a fixing screw 112, wherein one of the fixing rings 111 is mounted on the upper end of the electric drive servo motor 13, and the fixing screw 112 is connected to the pair of fixing rings 111.

[0032] Working principle and usage process of this utility model:

[0033] First, the user places the drone's arm between a pair of retaining rings 111, and then rotates the retaining screw 112 to fix the device body 1 to the drone's arm;

[0034] Subsequently, the user places the threaded end of the omnidirectional antenna between multiple fastening blocks 21, and then rotates the rotating handle 26, causing the rotating worm 25 to rotate around its own axis, so that the worm wheel ring 24 meshing with the rotating worm 25 also rotates, thereby driving the rotating disk 23 coaxially mounted with the worm wheel ring 24 to rotate, so that the multiple fastening blocks 21 placed in the moving groove 231 move simultaneously towards the center of the rotating disk 23, until the circumferential end faces of the multiple fastening blocks 21 contact the circumferential sidewall of the omnidirectional antenna. At this time, the axis of the omnidirectional antenna coincides with the axis of the mounting nut 122; by setting multiple fastening blocks 21, the fastening force between the omnidirectional antenna and the mounting nut 122 is evenly distributed;

[0035] Then, the user rotates the omnidirectional antenna to make the threaded hole of the omnidirectional antenna threadedly connected with the mounting nut 122; finally, the user rotates the rotating handle 26 to make the multiple fastening blocks 21 and the circumferential sidewall of the omnidirectional antenna contact more tightly, and to thread the locking pin 14 with the first locking hole 251 and the second locking hole 222, so as to ensure that the omnidirectional antenna is more firmly and stably connected with the mounting nut 122, thereby ensuring the accuracy of the test data.

[0036] After the omnidirectional antenna is fixed to the main body 1 by the fastening structure 2, the main body 1 and the omnidirectional antenna fly together with the UAV. The electric drive servo 13 drives the mounting plate 121 to rotate back and forth, thereby driving the omnidirectional antenna to rotate. The user adjusts the electric drive servo 13 to keep the omnidirectional antenna always vertically downward, flies at 10 kilometers, tests the performance of each antenna at different distances and records the data. Then, by adjusting the electric drive servo 13, the omnidirectional antenna is deviated from the UAV's flight direction by 1 to 30 degrees, and the performance of each antenna at different distances is tested and the data is recorded. Finally, by adjusting the electric drive servo 13, the omnidirectional antenna is deviated from the UAV's flight direction by 1 to 30 degrees, and the performance of each antenna at different distances is tested and the data is recorded.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An antenna performance test apparatus, characterized by, The device body (1) includes a fixed part (11) fixed to the unmanned aerial vehicle arm, a mounting part (12) for connecting the omnidirectional antenna, and an electric drive steering engine (13), the fixed part (11) is arranged above the mounting part (12), the mounting part (12) includes a mounting plate (121) and a mounting nut (122), the mounting nut (122) is detachably mounted on the lower surface of the mounting plate (121), the upper end of the electric drive steering engine (13) is connected to the fixed part (11), and the lower end of the electric drive steering engine (13) is connected to the mounting part (12). The fastening structure (2) includes a plurality of fastening blocks (21), a mounting cylinder (22), a rotating disc (23), a worm ring (24), and a rotating worm (25), the fastening blocks (21) are arranged in a circle with the center of the rotating disc (23) as the center, the upper end of the mounting cylinder (22) is fixedly mounted on the lower surface of the mounting plate (121), the lower surface of the mounting cylinder (22) has a plurality of sliding grooves (221), the fastening blocks (21) are slidably arranged in the sliding grooves (221), the rotating disc (23) is rotatably arranged between the mounting plate (121) and the mounting cylinder (22), the rotating disc (23) has a plurality of inclined movement grooves (231) for the movement of the fastening blocks (21), the rotating worm (25) is rotatably arranged in the mounting cylinder (22), the worm ring (24) is coaxially connected with the rotating disc (23), and the rotating worm (25) is engaged with the worm ring (24). The device body (1) further includes a locking column (14), the rotating worm (25) has a plurality of first locking holes (251) arranged at intervals, the mounting cylinder (22) has a plurality of second locking holes (222) with the same hole diameter as the first locking holes (251), and the locking column (14) is threadedly connected with the first locking holes (251) and the second locking holes (222).

2. The antenna performance test apparatus of claim 1, wherein: The fastening blocks (21) extend downward from the mounting cylinder (22) by a distance, and the opposite end surfaces of the plurality of fastening blocks (21) are arranged in an arc shape.

3. The antenna performance test apparatus of claim 2, wherein: The fastening structure (2) further includes a rotating handle (26), the rotating handle (26) is connected to one end of the rotating worm (25), and the rotating handle (26) is arranged outside the mounting cylinder (22).

4. The antenna performance test apparatus of claim 3, wherein: The mounting nut (122), the mounting cylinder (22), and the rotating disc (23) are coaxially arranged, and the lower end of the mounting nut (122) is located above the lower end of the fastening block (21) by a predetermined distance.

5. The antenna performance test apparatus of claim 4, wherein: The fixed part (11) includes a pair of fixed rings (111) and a fixed screw (112), one of the fixed rings (111) is mounted on the upper end of the electric drive steering engine (13), and the fixed screw (112) is connected to the pair of fixed rings (111).

6. The antenna performance test apparatus of claim 2, wherein: ​

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