Heavy-duty antenna test turntable

Abstract

The present disclosure relates to the technical field of antenna testing, and one embodiment of the present disclosure provides a heavy-load antenna testing turntable, which comprises a fixed table and an antenna base, the antenna base is arranged on the fixed table, a circular port is arranged in the fixed table, an inner rotating table is rotationally connected to the bottom of the circular port, a driving assembly is arranged on the fixed table and the inner rotating table, and a docking support assembly is arranged between the fixed table and the antenna base, the docking support assembly comprises a center positioning column, the center positioning column is fixed to the surface of the inner rotating table, the surface of the inner rotating table is provided with a plurality of connecting columns, the center positioning column and the connecting columns are sleeved with connecting seats, and the antenna base is sleeved on the connecting seats. Through the above technical scheme, the technical problem that the prior art is prone to deformation under heavy load, resulting in shaking or vibration when the turntable rotates, affecting the stability of the antenna attitude, and further causing large test data errors and being unable to accurately reflect the real performance of the antenna is solved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to the technical field of antenna test, in particular, to a heavy-load antenna test turntable. BACKGROUND

[0002] In the fields of modern communication, radar, electronic countermeasures, etc., as a key signal transceiver component, the performance test of an antenna is crucial to the realization of the overall function of the equipment. As a core supporting equipment for antenna performance test, an antenna test turntable needs to carry an antenna and realize accurate angle rotation and positioning to meet the needs in different test scenarios. With the development of technology, the application of large and heavy antennas is increasing, which puts forward higher requirements on the carrying capacity and stability performance of the test turntable. The traditional antenna test turntable generally has the disadvantage of poor stability when facing heavy-load working conditions. On the one hand, the mechanical structure design is prone to deformation under heavy load, resulting in shaking or vibration of the turntable during rotation, affecting the stability of the antenna attitude, and further causing large test data errors, which cannot accurately reflect the real performance of the antenna. On the other hand, the precision and reliability of the transmission system are insufficient, and during long-time heavy-load operation, the wear of transmission components such as gears and bearings is aggravated, the transmission gap is increased, the positioning accuracy of the turntable is decreased, and the stability performance is deteriorated. In addition, some existing turntables have weak load change and disturbance compensation ability under heavy load in the control system, and it is difficult to adjust the running state of the turntable in real time and effectively, further aggravating the problem of poor stability. These problems not only affect the efficiency and quality of antenna testing, but also limit the research and application of large and heavy antennas. Therefore, it is urgent to design a heavy-load antenna test turntable that can effectively improve the poor stability. CONTENT OF THE INVENTION

[0003] To overcome the above-mentioned defects, embodiments of the present disclosure provide a heavy-load antenna test turntable, which solves the technical problem that the existing technology is prone to deformation under heavy load, resulting in shaking or vibration of the turntable during rotation, affecting the stability of the antenna attitude, and further causing large test data errors, which cannot accurately reflect the real performance of the antenna.

[0004] According to one aspect, at least one embodiment of the present disclosure provides a heavy-load antenna test turntable, comprising: a fixed table and an antenna base, the antenna base being arranged on the fixed table; a circular port, an inner rotating table and a driving assembly, the circular port being opened in the fixed table, the inner rotating table being rotationally connected to the bottom of the circular port, and the driving assembly being arranged on the fixed table and the inner rotating table; a butt joint support assembly arranged between the fixed table and the antenna base; The docking support assembly comprises a center positioning column fixed on the inner rotary table surface, the inner rotary table surface is provided with a plurality of connecting columns, a connecting seat is sleeved on the center positioning column and the connecting column, and the antenna base is sleeved on the connecting seat.

[0005] As a further technical solution, an outer ring groove is formed around the side surface of the connecting seat, a plurality of first bolts are inserted into the top of the outer ring groove, and the upper ends of the first bolts are connected to the bottom of the antenna base through threaded rotation.

[0006] As a further technical solution, the driving assembly comprises a driven gear fixed on the bottom of the inner rotary table, a driving gear is arranged on the top of the fixed table and rotates by electric power, and the driving gear is engaged with the driven gear.

[0007] As a further technical solution, a bottom cover is connected to the bottom of the fixed table, a plurality of connecting holes are formed around the surface of the fixed table, and a second bolt is inserted into each connecting hole and connected to the bottom cover through threaded rotation.

[0008] As a further technical solution, a docking groove is formed around the bottom of the fixed table, the docking groove is connected to the inside of the circular port, a docking strip is arranged around the bottom of the antenna base, and the docking strip corresponds to the structure of the docking groove.

[0009] As a further technical solution, the surface of the fixed table is an inclined structure around the periphery, a plurality of outer grooves are formed on the inclined surface of the fixed table, and a pair of circular holes are formed in the outer grooves.

[0010] As a further technical solution, the center positioning column has a polygonal structure in cross section.

[0011] As a further technical solution, a buffer spring is sleeved on the connecting column, and a plurality of hydraulic buffers are arranged on the surface of the inner rotary table.

[0012] The embodiments of the present disclosure have the following beneficial effects: In the present disclosure, the docking support assembly solves the problem of deformation of the rotary table under heavy load through the cooperation of the center positioning column, the connecting column and the connecting seat. The polygonal structure of the center positioning column provides precise axial positioning and avoids eccentricity of the antenna base. The plurality of connecting columns are distributed in a ring shape, and cooperate with the connecting seat to uniformly transmit the weight of the antenna to the inner rotary table, thereby reducing local stress and preventing deformation. The buffer spring and the hydraulic buffer absorb vibration, the ring-shaped distribution of the first bolts enhances the stability of the connection, ensures the stable posture of the antenna during rotation, avoids test data errors caused by shaking, accurately reflects the real performance of the antenna, and provides reliable support for heavy-duty antennas. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0014] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle; In the diagram: 1. Fixed platform; 2. Antenna base; 3. Circular opening; 4. Inner rotating platform; 5. Docking support assembly; 5-1. Central positioning post; 5-2. Connecting post; 5-3. Connecting seat; 5-4. Outer ring groove; 5-5. First bolt; 6. Drive assembly; 6-1. Driven gear; 6-2. Drive gear; 6-3. Bottom cover; 6-4. Connecting hole; 6-5. Second bolt; 7. Docking groove; 8. Docking strip; 9. Outer groove; 10. Circular hole; 11. Buffer spring; 12. Hydraulic buffer. Detailed Implementation

[0015] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0016] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0017] In this document, unless otherwise indicated and limited, the terms "mount", "connected", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0018] In the present disclosure, unless otherwise specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is less than the second feature in horizontal height.

[0019] In the description of the present embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0020] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] As shown in Figures 1-4 It shows a heavy-duty antenna test turntable in an embodiment of the present disclosure, comprising: A fixed table and an antenna base, the antenna base is arranged on the fixed table; A circular port, an inner rotating table and a driving assembly, the circular port is opened in the fixed table, the inner rotating table is rotationally connected to the bottom of the circular port, and the driving assembly is arranged on the fixed table and the inner rotating table; A docking support assembly, the docking support assembly is arranged between the fixed table and the antenna base; The docking support assembly includes a central positioning post, which is fixed to the surface of the inner rotating stage. The surface of the inner rotating stage is provided with several connecting posts. A connecting seat is fitted onto the central positioning post and the connecting posts. The antenna base is fitted onto the connecting seat. An outer ring groove is formed around the side surface of the connecting seat. Several first bolts are inserted into the top of the outer ring groove. The upper end of the first bolts is screwed onto the bottom of the antenna base by thread.

[0022] In some examples, a docking support assembly is designed to achieve a stable connection. This assembly includes a central positioning post that is vertically fixed to the center of the inner rotating stage surface, serving as the core positioning reference for the antenna base and ensuring perfect alignment of the antenna base's axes during assembly. Several connecting posts, evenly distributed on the inner rotating stage surface, are arranged in a circular array around the central positioning post, with their height matching that of the central positioning post, forming a support frame. The connecting seat is a ring-shaped structure, with its inner hole fitting onto the central positioning post and connecting posts. Circumferential fixation is achieved through interference fit or key connection, ensuring synchronous rotation of the connecting seat and the inner rotating stage.

[0023] After the antenna base is fitted onto the connector, its bottom surface fits tightly against the upper surface of the connector. Several first bolts are evenly inserted into the outer annular groove around the side surface of the connector. The lower end of each bolt passes through the outer annular groove, and the upper end is screwed into the threaded hole at the bottom of the antenna base via a thread. This multi-point symmetrical bolt connection method firmly fixes the antenna base to the connector. Simultaneously, the supporting effect of the central positioning post and the connecting post ensures that the weight of the antenna base is evenly distributed on the inner rotating platform, preventing excessive localized stress. This component achieves reliable docking between the antenna base and the inner rotary table through axial positioning of the central positioning post, annular support of the connecting post, and fastening connection of the first bolt. When the antenna base is embedded inside the circular opening, the central positioning post ensures that its rotation axis is coaxial with the inner rotary table, avoiding eccentricity errors; the connecting post and connecting seat provide sufficient support rigidity to withstand the weight of the heavy-duty antenna and the torque generated during testing; the even distribution of the first bolt ensures the stability of the connection, preventing displacement or loosening of the antenna base during rotation, and providing a stable support foundation for antenna testing.

[0024] like Figures 1-4 As shown in the figure, the driving assembly proposed in this embodiment includes a driven gear, which is fixed to the bottom of the inner rotating platform. A driving gear that is driven to rotate by electricity is provided at the top of the fixed platform. The driving gear meshes with the driven gear. A bottom cover is inserted and connected to the bottom of the fixed platform. Several connecting holes are opened around the surface of the fixed platform. A second bolt is inserted into each of the connecting holes. The lower end of the second bolt is screwed into the bottom cover by a thread.

[0025] In some examples, a drive assembly is designed to achieve stable rotation. This assembly includes a driven gear fixed to the bottom of the inner rotary table, with its gear ring concentric with the inner rotary table to ensure stable power transmission. A drive gear mounted at the top of the fixed table is driven by an electric drive device (such as a servo motor), and its number of teeth matches that of the driven gear. Power is transmitted to the inner rotary table through meshing. The high-precision meshing of the drive and driven gears ensures transmission accuracy and low-noise operation during rotation. The bottom cover, inserted into the base of the mounting platform, is connected to the platform via several second bolts. The connecting holes around the surface of the mounting platform correspond to the screw holes on the bottom cover. The second bolts pass through the connecting holes and are screwed into the bottom cover, firmly fixing it to the bottom of the mounting platform, forming a closed drive cavity and protecting the internal gear transmission mechanism. The mating groove at the bottom of the mounting platform communicates with the interior of the circular opening. Its shape matches the mating strip at the bottom of the antenna base. When the antenna base is inserted into the circular opening, the mating strip inserts into the mating groove, forming a circumferential positioning structure. This ensures the relative position of the antenna base and the mounting platform is fixed, preventing radial displacement during rotation. This component transmits power through the meshing of a drive gear and a driven gear, while the connection between the bottom cover and the second bolt ensures the sealing and rigidity of the drive structure. When the electric drive unit rotates the drive gear, the driven gear rotates synchronously, thereby driving the inner rotating platform and the antenna base to rotate around the central axis, achieving azimuth adjustment of the antenna.

[0026] For example, such as Figure 3 As shown, a docking groove is provided around the bottom of the fixed platform, and the docking groove is connected to the inside of the circular opening. A docking strip is provided around the bottom of the antenna base, and the docking strip corresponds to the docking groove structure.

[0027] In some examples, the mating groove at the bottom of the mounting platform corresponds to the mating strip structure at the bottom of the antenna base. After the mating strip is inserted into the mating groove, it forms a circumferential limit, restricting the rotation of the antenna base, enhancing overall stability, preventing the antenna base from shifting due to external forces during testing, and ensuring test accuracy.

[0028] For example, such as Figure 1 As shown, the outer perimeter of the fixed platform is an inclined structural surface, and several outer grooves are provided on the inclined surface of the fixed platform, with a pair of circular holes provided in the outer grooves.

[0029] In some examples, the mounting platform features an inclined surface, an outer groove, and circular holes on its outer perimeter. The inclined surface facilitates operation, and the circular holes within the outer groove allow for the installation of fasteners, connecting the mounting platform to external equipment, enhancing the stability of the turntable installation, and meeting the mounting requirements of heavy-duty antenna testing.

[0030] For example, such as Figure 3 As shown, the cross-section of the central positioning column is a polygonal structure.

[0031] In some examples, the central positioning post has a polygonal cross-section. This polygonal structure mates with the inner hole of the connector to prevent relative rotation, ensuring synchronous rotation between the connector and the inner rotary table, improving transmission accuracy, and providing a stable rotational reference for antenna testing.

[0032] For example, such as Figure 3 As shown, a buffer spring is fitted on the connecting column, and several hydraulic buffers are provided on the surface of the inner rotary table.

[0033] In some examples, there are buffer springs on the connecting column and hydraulic dampers on the surface of the inner rotary table. The buffer springs reduce the impact of mounting the connecting seat, while the hydraulic dampers cushion the rotation during start-up and shutdown, reducing vibration, protecting components, and ensuring smooth operation of the rotary table.

[0034] In practical use: Place the fixed platform in the test area. The inner rotary table is rotatably connected to the bottom of the circular opening of the fixed platform. The bottom cover is fixed to the bottom of the fixed platform with the second bolt, sealing the drive assembly. Mount the connecting seat onto the central positioning post and the connecting post. The buffer spring on the connecting post provides elastic support, and the hydraulic buffer on the surface of the inner rotary table is ready. Mount the antenna base onto the connecting seat, inserting the bottom mating strip into the mating groove of the fixed platform. Rotate the first bolt in the outer ring groove, screwing its upper end into the bottom of the antenna base to complete the fixation. Start the drive assembly. The electric drive rotates the drive gear inside the fixed platform, meshing with the driven gear at the bottom of the inner rotary table, causing the inner rotary table and the antenna base to rotate synchronously for antenna testing. During the test, the central positioning post ensures the stability of the rotation axis, and the connecting post evenly distributes the load.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A heavy-duty antenna test turntable, characterized in that, include: A fixed platform (1) and an antenna base (2), wherein the antenna base (2) is disposed on the fixed platform (1); A circular opening (3), an inner rotating platform (4), and a drive assembly (6) are provided. The circular opening (3) is opened inside the fixed platform (1). The inner rotating platform (4) is rotatably connected to the bottom of the circular opening (3). The drive assembly (6) is provided on the fixed platform (1) and the inner rotating platform (4). A docking support assembly (5) is disposed between the fixed platform (1) and the antenna base (2); The docking support assembly (5) includes a central positioning column (5-1), which is fixed to the surface of the inner rotating stage (4). The surface of the inner rotating stage (4) is provided with a plurality of connecting columns (5-2). A connecting seat (5-3) is fitted onto the central positioning column (5-1) and the connecting column (5-2). The antenna base (2) is fitted onto the connecting seat (5-3).

2. The heavy-duty antenna test turntable according to claim 1, characterized in that, The connecting seat (5-3) has an outer ring groove (5-4) around its side surface. Several first bolts (5-5) are inserted into the top of the outer ring groove (5-4). The upper end of the first bolts (5-5) is screwed to the bottom of the antenna base (2) by thread.

3. The heavy-load antenna test turntable according to claim 1, characterized in that, The drive assembly (6) includes a driven gear (6-1) which is fixed to the bottom of the inner rotary table (4). A drive gear (6-2) that is driven to rotate by electricity is provided at the top of the fixed table (1). The drive gear (6-2) meshes with the driven gear (6-1).

4. The heavy-load antenna test turntable according to claim 3, characterized in that, The bottom of the fixed platform (1) is fitted with a bottom cover (6-3). Several connecting holes (6-4) are opened around the surface of the fixed platform (1). A second bolt (6-5) is inserted into each of the connecting holes (6-4). The lower end of the second bolt (6-5) is screwed into the bottom cover (6-3) by thread.

5. A heavy-duty antenna test turntable according to claim 1, characterized in that, The bottom of the fixed platform (1) is provided with a docking groove (7), which is connected to the inside of the circular opening (3). The bottom of the antenna base (2) is provided with a docking strip (8), which corresponds to the structure of the docking groove (7).

6. The heavy-duty antenna test turntable according to claim 1, characterized in that, The outer perimeter of the fixed platform (1) is an inclined structural surface, and a number of outer grooves (9) are provided on the inclined surface of the fixed platform (1), and a pair of round holes (10) are provided in the outer grooves (9).

7. The heavy-load antenna test turntable according to claim 1, characterized in that, The cross-section of the central positioning column (5-1) is a polygonal structure.

8. A heavy-duty antenna test turntable according to claim 1, characterized in that, A buffer spring (11) is fitted on the connecting column (5-2), and several hydraulic buffers (12) are provided on the surface of the inner rotating table (4).

Images