Radar antenna composite loading test device

Abstract

The application provides a radar antenna composite loading test device and relates to an antenna pedestal performance test device. The loading test device comprises a test platform, an antenna pedestal which is detachably arranged on the test platform, a loading shaft, a connecting head, a loading turntable, a radial loading mechanism and an axial loading mechanism. The bottom of the loading shaft is hingedly connected to the antenna pedestal. The top end of the loading shaft is rotationally connected to the connecting head. The loading shaft is rotationally connected to the loading turntable and penetrates the loading turntable. The antenna pedestal is detachably connected to the bottom end of the loading turntable. The radial loading mechanism is connected to the side of the connecting head. The axial loading mechanism is connected to the top of the connecting head. The radial loading mechanism and the axial loading mechanism respectively transmit radial loading force and axial loading force to the antenna pedestal through the loading shaft and the loading turntable. The loading test device can be applied to the antenna pedestal in static and rotating states. The composite loading force is integrated before being transmitted to the antenna pedestal, thereby improving the stability of the loading test and the accuracy and reliability of the test results.

Description

Technical Field

[0001] This invention relates to an antenna mount performance testing device, specifically to a radar antenna composite loading test device. Background Technology

[0002] The radar antenna mount is the mechanism that supports and drives the radar antenna. It bears the axial force, radial force, and overturning moment transmitted by the radar antenna, and drives the antenna to rotate at a specified speed.

[0003] The operational stability and reliability of radar antenna mounts directly affect the realization of radar functions. Therefore, necessary performance tests must be conducted on the antenna mounts before they are put into formal use. This includes antenna mount loading tests using an antenna mount test platform. Existing loading test techniques mainly involve loading a stable antenna mount under a single loading force. However, antenna mounts actually experience more than one loading force during rotation, so the single loading force differs significantly from real-world conditions. Based on this, techniques for loading stationary antenna mounts using composite loading forces have gradually emerged.

[0004] However, the drawback of existing technologies that apply composite loading forces to the antenna mount is poor loading stability. This leads to inaccurate loading test data and low reliability of the results, severely impacting the evaluation of antenna mount performance. In particular, when the antenna mount is in a dynamic state, it can even become impossible to conduct tests. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a radar antenna composite loading test device, which solves the problems of low loading stability when the composite loading force is applied to the antenna mount, resulting in inaccurate test data or even the inability to load under dynamic conditions of the antenna mount.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] Radar antenna composite loading test device, including

[0010] The test platform has an antenna mount that can be detachably mounted on it.

[0011] A loading shaft is provided, which is perpendicular to the test platform and has its bottom hinged to the antenna mount.

[0012] A loading turntable, wherein the loading shaft rotates axially and passes through the loading turntable, and the antenna mount is detachably connected to the bottom end of the loading turntable;

[0013] A connector, which is rotatably connected to the top end of the loading shaft;

[0014] A radial loading mechanism is connected to the side of the connector and is used to apply a radial load force to the loading shaft.

[0015] An axial loading mechanism is connected to the top of the connector and is used to apply an axial load force to the loading shaft.

[0016] The radial loading mechanism and the axial loading mechanism transmit the combined load force to the antenna mount through the loading shaft.

[0017] Preferably, a loading frame is fixedly connected to the test platform, and the radial loading mechanism and the axial loading mechanism are respectively fixedly connected to the loading frame.

[0018] Preferably, the radial loading mechanism includes a first fixed pulley, a first loading rope, a first loading block, and a first movable pulley; the first fixed pulley is fixed to the longitudinal beam on the side of the loading frame; one end of the first loading rope is fixedly connected to the first loading block, and the other end passes around the first fixed pulley and the first movable pulley and is fixed to the loading frame; the first movable pulley is located on the side of the first fixed pulley near the antenna mount, and the first movable pulley is connected to the loading shaft through a connector.

[0019] Preferably, the axial loading mechanism includes a second fixed pulley, a second movable pulley, a second loading rope, a third fixed pulley, and a second loading block. The second fixed pulley is fixed to the middle of the top of the loading frame, and the third fixed pulley is fixed to the crossbeam at the top of the loading frame. One end of the second loading rope is fixedly connected to the second loading block, and the other end passes over the third fixed pulley, the second fixed pulley, and the second movable pulley and is fixed to the loading frame. The second movable pulley is located on the bottom side of the second fixed pulley, and the second movable pulley is connected to the loading shaft through a connector.

[0020] Preferably, the pulley group of the first fixed pulley and the first movable pulley has n units, and the pulley group of the second fixed pulley and the second movable pulley has m units, where n and m ≥ 1.

[0021] Preferably, the loading turntable includes a top plate, a connecting plate, and a bottom ring. The top plate has a circular structure, and the bottom ring is fixedly connected to the bottom edge of the top plate by a plurality of evenly arranged inclined connecting plates. The top plate and the bottom ring are located on the same axis, and a bearing is embedded in the center of the top plate. The loading shaft rotates coaxially through the bearing and the bottom ring.

[0022] Preferably, the connecting plate includes a support portion and a reinforcing portion. The support portion is fixed between the top plate and the bottom ring using an arc-shaped plate structure, and the side of the support portion has multiple reinforcing portions vertically. The two ends of the reinforcing portions are respectively connected to the top plate and the bottom ring.

[0023] Preferably, the connector includes a first connecting rod, a rotating rod, and a second connecting rod. The rotating rod extends laterally through an opening at the top of the loading shaft. The first connecting rod and the second connecting rod are respectively fixed to the rotating rod and are arranged perpendicularly to each other. The second movable pulley is connected to the loading shaft through the first connecting rod, and the first movable pulley is connected to the loading shaft through the second connecting rod.

[0024] Preferably, the side sections of the first connecting rod and the second connecting rod adopt a "V" shaped structure, and the corners where the first connecting rod, the second connecting rod, and the rotating rod are connected are all chamfered to form an arc-shaped structure.

[0025] Preferably, it also includes a base, which is detachably connected to the test platform, and the surface of the base is provided with positioning holes; the end of the loading shaft away from the radial loading mechanism and the axial loading mechanism is a positioning part; the positioning hole and the positioning part are clearance fitted.

[0026] (III) Beneficial Effects

[0027] To achieve the above objectives, the present invention provides the following technical solution:

[0028] This invention provides a radar antenna composite loading test device. Compared with the prior art, it has the following advantages:

[0029] 1. In this embodiment of the invention, a radial loading mechanism transmits radial tension to a loading shaft, and an axial loading mechanism transmits axial force to the loading shaft. The loading shaft combines the radial and axial tensions before transmitting the combined force to the antenna mount. The combined action of the radial and axial loading mechanisms achieves multi-directional force application, ensuring that the antenna mount is subjected to multi-directional combined loading forces during the test. The integrating effect of the loading shaft improves the stability during loading, making the test results more consistent with actual conditions, thus improving the accuracy and reliability of the loading test results.

[0030] 2. In this embodiment of the invention, the loading turntable can fix the antenna mount from its outer edge and distribute the integrated composite loading force across the antenna mount, making the loading force more uniform and thus improving the loading stability of the antenna mount. When the antenna mount rotates, it drives the loading turntable to rotate stably, allowing the turntable to apply the composite loading force to the rotating antenna mount, thereby simulating the actual working conditions of the antenna mount in rotation and detecting the load capacity of the antenna mount during actual operation. Therefore, this embodiment of the invention can perform loading tests not only when the antenna mount is stationary but also when the antenna mount is rotating, further improving the accuracy of the test results. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0033] Figure 2 This is a front structural diagram of an embodiment of the present invention;

[0034] Figure 3 This is a cross-sectional structural diagram of the test platform, loading turntable, and bearing in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the loading turntable in an embodiment of the present invention;

[0036] Figure 5 yes Figure 1 Enlarged structural diagram at point A;

[0037] Figure 6 This is a schematic diagram of the loading shaft structure in an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the antenna mount in an embodiment of the present invention.

[0039] In the diagram: 1. Test platform; 2. Loading turntable; 21. Top plate; 22. Connecting plate; 221. Support part; 222. Reinforcing part; 23. Bottom ring; 3. Radial loading mechanism; 31. First fixed pulley; 32. First loading rope; 33. First loading block; 34. First movable pulley; 4. Axial loading mechanism; 41. Second fixed pulley; 42. Second movable pulley; 43. Second loading rope; 44. Third fixed pulley; 45. Second loading block; 5. Loading frame; 6. Bearing; 7. Loading shaft; 71. Positioning part; 72. Limiting part; 73. Connecting part; 8. Connector; 81. First connecting rod; 82. Rotating rod; 83. Second connecting rod; 9. Base; 10. Antenna mount; 101. Rotary table; 102. Central hole; 103. Rotation drive component; 104. Support platform. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] This application provides a radar antenna composite loading test device, which solves the technical problems of low loading force stability and low test result reliability of antenna mount under single loading force test, and also solves the problem that the loading force of antenna mount cannot be constant under dynamic conditions.

[0042] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0043] In this embodiment of the invention, a radial loading mechanism transmits radial tension to a loading shaft, and an axial loading mechanism transmits axial force to a loading shaft. The loading shaft combines the radial and axial tension forces and then transmits the combined force to the antenna mount. The combined action of the radial and axial loading mechanisms achieves multi-directional force application, ensuring that the antenna mount is subjected to multi-directional combined loading forces during the test. This makes the test results more consistent with actual conditions, improves the accuracy of the loading test results, and thus enhances the reliability of the loading test results.

[0044] The loading shaft rotates axially through the loading turntable, which can fix the antenna mount from the outer edge, ensuring that the antenna mount can drive the loading turntable to rotate stably. The loading turntable applies a composite force to the rotating antenna mount, thereby simulating the actual working conditions of the antenna mount and detecting the load capacity of the antenna mount during actual operation. Therefore, this embodiment of the invention can not only perform loading tests when the antenna mount is stationary, but also perform loading tests when the antenna mount is rotating, further improving the accuracy of the test results.

[0045] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0046] like Figures 1-2 As shown,

[0047] The radar antenna composite loading test apparatus includes:

[0048] The antenna mount 10 is detachably mounted on the test platform 1.

[0049] Loading frame 5 is fixed to the test platform 1 by bolts;

[0050] Loading shaft 7 is set perpendicular to the test platform 1 and its bottom is hinged to the antenna mount 10.

[0051] Connector 8 is rotatably mounted at the top of loading shaft 7;

[0052] The radial loading mechanism 3 includes a first fixed pulley 31, a first loading rope 32, a first loading block 33, and a first movable pulley 34. The first fixed pulley 31 is fixed to the longitudinal beam of the loading frame 5. One end of the first loading rope 32 is fixedly connected to the first loading block 33, and the other end passes over the first fixed pulley 31 and the first movable pulley 34 respectively and is fixed to the loading frame 5, that is, fixed at point B of the loading frame 5. The first movable pulley 34 is located on the side of the first fixed pulley 31, and the first movable pulley 34 is connected to the loading shaft 7 through the connector 8. The number and mass of the first loading block 33 are adjustable. The number of fixed and movable pulleys in the pulley group formed by the first fixed pulley 31 and the first movable pulley 34 can be increased or decreased as needed to change the loading force of the loading test and realize the loading test of the antenna mount 10 under different radial loading forces.

[0053] The axial loading mechanism 4 includes a second fixed pulley 41, a second movable pulley 42, a second loading rope 43, a third fixed pulley 44, and a second loading block 45. The second fixed pulley 41 is fixed to the middle of the top of the loading frame 5, and the third fixed pulley 44 is fixed to the crossbeam at the top of the loading frame 5. One end of the second loading rope 43 is fixedly connected to the second loading block 45, and the other end passes over the third fixed pulley 44, the second fixed pulley 41, and the second movable pulley 42 respectively and is fixed to the loading frame 5, and then fixed at point A of the loading frame 5. The second movable pulley 42 is located on the bottom side of the second fixed pulley 41, and the second movable pulley 42 is connected to the loading shaft 7 through the connector 8. The number and mass of the second loading block 45 are adjustable. The number of fixed and movable pulleys in the pulley group formed by the second fixed pulley 41 and the second movable pulley 42 can be increased or decreased as needed to change the loading force and realize the loading test of the antenna mount 10 under different axial loading forces.

[0054] The radial loading mechanism 3 and the axial loading mechanism 4 are connected to the loading shaft 7. The loading shaft 7 applies a combined loading force to the antenna mount 10 for testing. This not only enables the antenna mount 10 to be subjected to combined loading, but also allows for dynamic combined loading tests when the antenna mount 10 is rotating. The loading is more in line with the actual situation, and the test results are more reliable.

[0055] like Figures 1-2 As shown, in order to change the loading force by changing the number of pulleys, the pulley group of the first fixed pulley 31 and the first movable pulley 34 has n pulleys, and the pulley group of the second fixed pulley 41 and the second movable pulley 42 has m pulleys, where n and m ≥ 1;

[0056] The first loading block 33 applies axial loading force to the antenna mount 10 through n sets of pulleys, loading shaft 7 and loading turntable 2, and the radial loading force is equivalent to 2n times the mass of the first loading block;

[0057] The second loading block 45 applies axial loading force to the antenna mount 10 through m sets of pulleys, loading shaft 7 and loading turntable 2. The axial loading force is equal to 2m times that of the loading block.

[0058] In this implementation case, n=1, m=1, that is, the number of the first fixed pulley 31, the first movable pulley 34, the second fixed pulley 41, and the second movable pulley 42 is 1 each;

[0059] like Figure 1 and 4As shown, the loading test device also includes a loading turntable 2, the bottom of which is detachably connected to the antenna mount 10 to be tested. For example, the loading turntable 2 and the antenna mount 10 are detachably fixed by screws and nuts. The loading turntable 2 includes a top plate 21, a connecting plate 22, and a bottom ring 23. The top plate 21 adopts a disc structure, and the bottom edge of the top plate 21 is fixedly connected to the bottom ring 23 by a plurality of evenly arranged inclined connecting plates 22. The top plate 21 and the bottom ring 23 are located on the same axis. A bearing 6 is embedded in the center of the top plate 21. There are one or two bearings 6, and the bearings 6 are tapered roller bearings. The loading shaft 7 rotates coaxially through the bearing 6 and the bottom ring 23. The bottom ring 23 is fixed to the antenna mount 10 by a plurality of screws and nuts, ensuring that the connection between the antenna mount 10 and the loading turntable 2 is stable, and realizing the application of force to the antenna mount 10 for loading test.

[0060] To further improve the overall robustness and stability of the loading turntable 2 and enhance the safety of the test, the connecting plate 22 includes a support part 221 and a reinforcing part 222. The support part 221 adopts an arc-shaped plate structure and is fixed between the top plate 21 and the bottom ring 23. The side of the support part 221 has multiple reinforcing parts 222, and the two ends of the reinforcing parts 222 are connected to the top plate 21 and the bottom ring 23 respectively.

[0061] like Figure 1 , 2 As shown in Figures 3 and 5, the connector 8 includes a first connecting rod 81, a rotating rod 82, and a second connecting rod 83. The rotating rod 82 passes through and is rotatably connected to a hole opened at the top of the loading shaft 7, and the first connecting rod 81 is fixed to one side of the rotating rod 82; the second connecting rod 83 is fixed to the other side of the rotating rod 82. The first connecting rod 81 and the second connecting rod 83 are arranged vertically. The second movable pulley 42 is connected to the loading shaft 7 through the first connecting rod 81, and the first movable pulley 34 is connected to the loading shaft 7 through the second connecting rod 83. The connector 8 can synchronously connect the radial loading mechanism 3 and the axial loading mechanism 4 to the loading shaft 7, and the connector 8 and the loading shaft 7 are rotatable. The connector 8 has a simple and ingenious structure, saves on connecting parts, saves costs, and is easy to connect.

[0062] The side sections of the first connecting rod 81 and the second connecting rod 83 adopt a "V" shaped structure. The corners where the first connecting rod 81, the second connecting rod 83 and the rotating rod 82 are connected are all chamfered to form an arc structure. The structural design of the first connecting rod 81, the second connecting rod 83 and the rotating rod 82 can effectively reduce stress concentration and strengthen the connection head 8.

[0063] like Figure 1 , 2As shown in Figures 3 and 6, in order to facilitate the placement of the antenna mount 10 to be tested onto the test platform 1, a base 9 is also included. The base 9 is detachably connected to the test platform 1, and a positioning hole is opened on the surface of the base 9. The end of the loading shaft 7 away from the radial loading mechanism 3 and the axial loading mechanism 4 is a positioning part 71. The positioning part 71 has a rectangular structure, and the positioning hole is clearance-fitted with the rectangular structure of the positioning part 71. This can effectively prevent the loading shaft 7 from rotating relative to the base 9 and reduce the wear on the loading shaft 7.

[0064] The loading shaft 7 also includes a limiting part 72 and a connecting part 73. The connecting part 73 has an opening to connect with the connector 8, and the limiting part 72 is connected to the loading turntable 2 through the bearing 6.

[0065] The antenna mount 10 can also be moved via the base 9. For example, the base 9 is detachably connected to the test platform 1, specifically by bolts. The antenna mount 10 to be tested is placed on the test platform 1 and then moved via the base 9, which makes it more convenient to move the antenna mount 10.

[0066] It should be further explained that the antenna mount 10 is a device for supporting and positioning the antenna. The antenna mount 10 uses an antenna control system to make the antenna move according to a predetermined pattern or follow the target, accurately pointing to the target; and through the axis detection device, the direction of the target is accurately measured, so the antenna mount 10 can rotate itself.

[0067] The structure of antenna mount 10 is as follows Figure 7 As shown, the device includes a rotary table 101, a central hole 102, a rotary drive 103, and a support platform 104. The rotary table 101 is rotatably connected to the top of the support platform 104. The rotary table 101 is connected to the loading turntable 2. A central hole 102 is formed between the rotary table 101 and the support platform 104. The loading shaft 7 is inserted into the central hole 102 during the test. The rotary drive 103 drives the rotary table 101 to rotate relative to the support platform 104. The rotary drive 103 includes, but is not limited to, a motor and gears. Teeth are formed on the surface of the rotary table 101, and the teeth mesh with the gears. The motor drives the gears to rotate, thereby driving the rotary table 101 to rotate.

[0068] The implementation principle of the present invention is as follows: When the radar antenna composite loading test device of the present invention is used for testing, the antenna seat 10 to be tested is first placed on the base 9, and then the antenna seat 10 is moved to the test platform 1 through the base 9. The base 9 is fixed on the test platform 1 with bolts. Then, the loading turntable 2 is placed on the top of the antenna seat 10, and the positioning part 71 of the loading shaft 7 is inserted and connected to the positioning hole of the base 9 through the middle hole 102 of the antenna seat 10. The loading turntable 2 is fixed on the rotating table 101 of the antenna seat 10 with screws and nuts.

[0069] During the static test, the antenna mount 10 is in a stationary state. By adjusting the mass of the first loading block 33 and the second loading block 45, loading tests of the antenna mount 10 in a stationary state under different axial and radial load forces can be achieved.

[0070] During dynamic testing, when the antenna mount 10 rotates at different speeds, the antenna mount 10 drives the loading turntable 2 to rotate. The first loading block 33 and the second loading block 45 apply axial and radial forces to the loading shaft 7, and transmit the loading force to the antenna mount 10 through the bearing 6. By adjusting the mass of the first loading block 33 and the second loading block 45, loading tests of the antenna mount 10 at different speeds under different axial and radial loads can be achieved.

[0071] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0072] 1. In this embodiment of the invention, a radial loading mechanism transmits radial tension to a loading shaft, and an axial loading mechanism transmits axial force to the loading shaft. The loading shaft combines the radial and axial tensions before transmitting the combined force to the antenna mount. The combined action of the radial and axial loading mechanisms achieves multi-directional force application, ensuring that the antenna mount is subjected to multi-directional combined loading forces during the test. The integrating effect of the loading shaft improves the stability during loading, making the test results more consistent with actual conditions, thus improving the accuracy and reliability of the loading test results.

[0073] 2. In this embodiment of the invention, the loading turntable can fix the antenna mount from its outer edge and distribute the integrated composite loading force across the antenna mount, making the loading force more uniform and thus improving the loading stability of the antenna mount. When the antenna mount rotates, it drives the loading turntable to rotate stably, allowing the loading turntable to apply the composite loading force to the rotating antenna mount, thereby simulating the actual working conditions of the antenna mount in rotation and detecting the load capacity of the antenna mount during actual operation. Therefore, this embodiment of the invention can perform loading tests not only when the antenna mount is stationary but also when the antenna mount is rotating, and the loading test results are highly accurate.

[0074] 3. In this embodiment of the invention, a loading block is used in conjunction with a pulley system to load the antenna mount. The loading of the antenna mount can be achieved without an additional electromechanical-hydraulic control system. It has the advantages of constant and reliable loading force, simple control system, and low cost. The applied loading force can be controlled by the number of movable pulleys. In addition, the loading force can also be adjusted by adjusting the weight and number of loading blocks. It has the characteristics of stability, reliability, convenient operation and low cost.

[0075] 4. In this embodiment of the invention, the antenna mount is loaded by a loading shaft and bearings. During the loading process, the antenna mount can rotate along its own axis, which can eliminate the influence of structural components and deformation, making the loading force more stable and reliable.

[0076] 5. In this embodiment of the invention, a fixed pulley and a movable pulley are used in series, so that the actual axial loading force is only 1 / n of the loading force required for the experiment, and the radial loading force is only 1 / m of the loading force required for the experiment. This is more suitable for loading experiments of high-load antenna mounts, and also has the advantages of simple structure and low cost.

[0077] 6. In this embodiment of the invention, the loading block is amplified by m or n times by the moving pulley system to apply radial or axial loading to the antenna mount, which reduces the influence of design, processing, assembly errors and elastic deformation on the loading system, so that the loading force remains constant during the rotation of the antenna mount, resulting in higher reliability.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radar antenna composite loading test device, characterized in that: include The test platform (1) and the antenna mount (10) are detachably mounted on the test platform (1); Loading shaft (7), which is set perpendicular to the test platform (1) and whose bottom is hinged to the antenna mount (10); Connector (8), which is rotatably connected to the top end of the loading shaft (7); The connector (8) includes a first connecting rod (81), a rotating rod (82), and a second connecting rod (83). The rotating rod (82) passes through the opening at the top of the loading shaft (7) laterally. The first connecting rod (81) and the second connecting rod (83) are respectively fixed on the rotating rod (82). The first connecting rod (81) and the second connecting rod (83) are arranged perpendicularly. Loading turntable (2), the loading shaft (7) rotates axially and passes through the loading turntable (2), and the antenna mount (10) is detachably connected to the bottom end of the loading turntable (2); A radial loading mechanism (3) is connected to the side of the connector (8) and is used to apply a radial load force to the loading shaft (7); The radial loading mechanism (3) includes a first fixed pulley (31), a first loading rope (32), a first loading block (33), and a first movable pulley (34); An axial loading mechanism (4) is connected to the top of the connector (8) and is used to apply an axial load force to the loading shaft (7). The axial loading mechanism (4) includes a second fixed pulley (41), a second movable pulley (42), a second loading rope (43), a third fixed pulley (44), and a second loading block (45); The radial loading mechanism (3) and the axial loading mechanism (4) transmit the combined load force to the antenna mount (10) through the loading shaft (7) and the loading turntable (2).

2. The radar antenna composite loading test device as described in claim 1, characterized in that, The test platform (1) is fixedly connected to a loading frame (5), and the radial loading mechanism (3) and the axial loading mechanism (4) are fixedly connected to the loading frame (5) respectively.

3. The radar antenna composite loading test device as described in claim 2, characterized in that, The first fixed pulley (31) is fixed on the longitudinal beam on the side of the loading frame (5); one end of the first loading rope (32) is fixedly connected to the first loading block (33), and the other end passes around the first fixed pulley (31) and the first movable pulley (34) and is fixed to the loading frame (5); the first movable pulley (34) is located on the side of the first fixed pulley (31) near the antenna mount (10), and the first movable pulley (34) is connected to the loading shaft (7) through the connector (8).

4. The radar antenna composite loading test device as described in claim 3, characterized in that, The second fixed pulley (41) is fixed to the top center of the loading frame (5), and the third fixed pulley (44) is fixed to the crossbeam at the top of the loading frame (5); one end of the second loading rope (43) is fixedly connected to the second loading block (45), and the other end passes around the third fixed pulley (44), the second fixed pulley (41) and the second movable pulley (42) and is fixed to the loading frame (5); the second movable pulley (42) is located on the bottom side of the second fixed pulley (41), and the second movable pulley (42) is connected to the loading shaft (7) through the connector (8).

5. The radar antenna composite loading test device as described in claim 4, characterized in that, The first fixed pulley (31) and the first movable pulley (34) have n pulley groups, and the second fixed pulley (41) and the second movable pulley (42) have m pulley groups, where n and m ≥ 1.

6. The radar antenna composite loading test apparatus as described in any one of claims 1-5, characterized in that, The loading turntable (2) includes a top plate (21), a connecting plate (22), and a bottom ring (23). The top plate (21) adopts a disc structure, and the bottom ring (23) is fixedly connected to the bottom edge of the top plate (21) by a plurality of evenly arranged inclined connecting plates (22). The top plate (21) and the bottom ring (23) are located on the same axis. A bearing (6) is embedded in the center of the top plate (21), and the loading shaft (7) rotates coaxially through the bearing (6) and the bottom ring (23).

7. The radar antenna composite loading test device as described in claim 6, characterized in that, The connecting plate (22) includes a support part (221) and a reinforcing part (222). The support part (221) is fixed between the top plate (21) and the bottom ring (23) with an arc-shaped plate structure. The side of the support part (221) has multiple reinforcing parts (222) vertically. The two ends of the reinforcing parts (222) are connected to the top plate (21) and the bottom ring (23) respectively.

8. The radar antenna composite loading test device as described in claim 5, characterized in that, The second movable pulley (42) is connected to the loading shaft (7) through the first connecting rod (81), and the first movable pulley (34) is connected to the loading shaft (7) through the second connecting rod (83).

9. The radar antenna composite loading test device as described in claim 8, characterized in that, The side sections of the first connecting rod (81) and the second connecting rod (83) adopt a "V" shaped structure, and the corners connecting the first connecting rod (81), the second connecting rod (83) and the rotating rod (82) are all chamfered to form an arc structure.

10. The radar antenna composite loading test device as described in claim 1, characterized in that, It also includes a base (9), which is detachably connected to the test platform (1), and a positioning hole is opened on the surface of the base (9); the end of the loading shaft (7) away from the radial loading mechanism (3) and the axial loading mechanism (4) is a positioning part (71); the positioning hole and the positioning part (71) are clearance fit.

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