High-concentricity antenna testing device

Abstract

The utility model relates to the technical field of antenna testing, in particular to a high-concentricity antenna testing device, which comprises a driving unit, a transmission unit, a polarization adapter plate and an antenna tool bottom plate. Through structural optimization and by utilizing a fit tolerance design theory, coaxial matching between the polarization adapter plate and the output end of the transmission unit is realized through a first matching hole and a first matching table, and coaxial matching between the polarization adapter plate and the antenna tool bottom plate is realized through a second matching table and a second matching hole, so that the assembly precision during connection of all parts is ensured, and the assembly efficiency is improved. Therefore, the concentricity of the antenna testing device is improved, the accuracy and reliability of antenna testing are improved, the efficiency of antenna testing is improved, and the actual testing requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of antenna testing technology, specifically to a high concentricity antenna testing device. Background Technology

[0002] When testing the horizontal and vertical polarization of an antenna, it is necessary to use an antenna testing device to rotate the antenna's central axis around the polarization axis of the scanning frame. For example, Chinese utility model patent application number 201520346693.X provides a novel polarization rotation device for a shipborne mobile satellite communication antenna. The feed source is connected to the mounting base through a cross roller bearing, and a drive motor drives the mounting base to rotate through gears, thereby causing the feed source to rotate around its central axis.

[0003] However, due to the large assembly error in the existing antenna testing equipment and antenna connection assembly process, the overlap between the antenna central axis and the polarization rotation axis is poor, which reduces the accuracy and precision of antenna testing, as well as the antenna testing efficiency, and cannot meet the actual testing requirements. Utility Model Content

[0004] The purpose of this invention is to provide a high concentricity antenna testing device to solve the technical problem of low efficiency in current tunnel support quality inspection operations.

[0005] The solution of this utility model to the above-mentioned technical problems is as follows:

[0006] A high concentricity antenna testing device includes a driving unit, a transmission unit, a polarization adapter plate, and an antenna fixture base plate, wherein the polarization adapter plate is disposed between the transmission unit and the antenna fixture base plate.

[0007] The drive unit is connected to the input end of the transmission unit, the output end of the transmission unit is provided with a first mating platform, one end of the polarization adapter plate is provided with a first mating hole, the other end of the polarization adapter plate is provided with a second mating platform, and one end of the antenna tooling base plate is provided with a second mating hole.

[0008] The first mating hole and the second mating platform are both coaxially arranged with the polarization adapter plate. The second mating hole is coaxially arranged with the antenna tooling base plate. The first mating platform mates with the first mating hole, and the second mating platform mates with the second mating hole.

[0009] Furthermore, the polarization adapter plate is detachably connected to the antenna fixture base plate.

[0010] Further specifying, the antenna fixture base plate is provided with a plurality of first connectors, the first connectors are arranged parallel to the axis of the antenna fixture base plate, one end of the first connector is located on the outer side of the antenna fixture base plate, and the other end of the first connector extends through the antenna fixture base plate into the polarization adapter plate and connects to the polarization adapter plate; the plurality of first connectors are arranged circumferentially around the axis of the antenna fixture base plate, and the first connectors are located on the outer ring of the second mating hole.

[0011] Furthermore, the first connector is a non-loosening screw.

[0012] Further, the high concentricity antenna testing device also includes an antenna support base, one end of which is provided with a third mating platform, the third mating platform being coaxially arranged with the antenna support base, and the other end of the antenna fixture base plate is provided with a third mating hole, the third mating hole being coaxially arranged with the antenna fixture base plate;

[0013] The third mating hole mates with the third mating platform, the antenna tooling base plate is set between the polarization adapter plate and the antenna support, and the first connector is located on the periphery of the antenna support.

[0014] Furthermore, the antenna support is a one-piece structure.

[0015] Furthermore, the antenna support is connected to the antenna fixture base plate via a second connector.

[0016] Further, the antenna support has an internal cavity, which is coaxially arranged with the antenna support. An operation window is provided on the side wall of the antenna support, and the operation window communicates with the cavity.

[0017] Furthermore, the high concentricity antenna testing device also includes an antenna connection substrate, on which a connection hole is formed, and the connection hole is coaxially arranged with the antenna connection substrate;

[0018] The other end of the antenna support is provided with a fourth mating hole, which mates with the outer wall of the antenna connecting substrate.

[0019] Furthermore, the antenna connection substrate is connected to the antenna support base via a third connector.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model, through structural optimization and the application of fit tolerance design theory, achieves coaxial fit between the polarization adapter plate and the output end of the transmission unit through the first fit hole and the first fit platform, and achieves coaxial fit between the polarization adapter plate and the antenna tooling base plate through the second fit platform and the second fit hole. This ensures the assembly accuracy when connecting the components, avoids assembly errors, thereby improving the concentricity of the antenna testing device, improving the accuracy and reliability of antenna testing, and improving the efficiency of antenna testing to meet actual testing needs.

[0022] 2. This utility model enables rapid assembly and disassembly using a screw that does not loosen, while coaxially engaging the antenna support base and the antenna fixture base plate. This allows for quick assembly and disassembly of the antenna under test with different specifications and models during actual testing, reducing the difficulty of antenna testing and assembly, and further improving antenna testing efficiency.

[0023] 3. The antenna support base of this utility model is an integrated structure, which improves its structural rigidity and connection stability, while ensuring processing accuracy and avoiding deformation that could cause deviation between the central axis and polarization axis of the antenna under test, thereby further improving the concentricity of the antenna testing device. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the high concentricity antenna testing device of this utility model;

[0025] Figure 2 This is a cross-sectional view of the high concentricity antenna testing device of this utility model;

[0026] Figure 3 for Figure 2 Enlarged diagram of part A in the middle;

[0027] Figure 4 for Figure 2 Enlarged diagram of section B;

[0028] Figure 5 for Figure 2 Enlarged diagram of section C;

[0029] Figure 6 for Figure 2 Enlarged schematic diagram of section D in the middle;

[0030] In the figure, 10-drive unit; 20-transmission unit; 21-first mating platform; 22-fourth connector; 30-polarization adapter plate; 31-first mating hole; 32-second mating platform; 40-antenna fixture base plate; 41-second mating hole; 42-third mating hole; 43-first connector; 50-antenna under test; 60-antenna support; 61-third mating platform; 62-fourth mating hole; 63-second connector; 64-operation window; 70-antenna connection substrate; 71-connection hole; 72-third connector. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] Example 1

[0033] refer to Figures 1-6 This utility model provides a high concentricity antenna testing device, including a drive unit 10, a transmission unit 20, a polarization adapter plate 30, and an antenna fixture base plate 40. The drive unit 10 is connected to the input end of the transmission unit 20, and the output end of the transmission unit 20 is connected to the polarization adapter plate 30, so that the drive unit 10 drives the polarization adapter plate 30 to rotate around its axis through the transmission unit 20. The polarization adapter plate 30 is connected to the antenna fixture base plate 40, and the antenna fixture base plate 40 is connected to the antenna. The polarization adapter plate 30 drives the antenna to rotate around its central axis through the antenna fixture base plate 40.

[0034] During rotation, the transmission unit 20 typically includes a speed reduction mechanism, a transmission gear, and a rotating bearing connected in sequence, as well as a support housing. The support housing is sleeved on the outside of the speed reduction mechanism and the transmission gear. The support housing is fastened to the inner ring of the rotating bearing. The speed reduction mechanism drives the outer ring of the rotating circumference to rotate through the transmission gear. Therefore, the polarization adapter plate 30 rotates by connecting to the outer ring of the rotating circumference.

[0035] refer to Figure 2 and Figure 3 During the rotation process, it is necessary to ensure that the assembly between each component is precise and reliable, reduce assembly errors, and avoid the antenna polarization axis and central axis being misaligned due to assembly, resulting in low accuracy and unreliability of test results.

[0036] Since the transmission unit 20 drives the polarization adapter plate 30 to rotate, it is necessary to ensure the concentricity of the two during the assembly process. Therefore, a first mating platform 21 is set on the output end of the transmission unit 20, and a first mating hole 31 is opened on the end face of the polarization adapter plate 30 near the rotating bearing. The first mating platform 21 and the first mating hole 31 are fitted with a clearance to ensure the coaxiality between the transmission unit 20 and the polarization adapter plate 30.

[0037] The first mating hole 31 is coaxially arranged with the polarization adapter plate 30.

[0038] Since the rotating bearing is connected to the polarization transition plate 30, the outer ring of the rotating bearing is used as the first mating platform 21, and the first mating hole 31 is sleeved on the outer ring of the rotating bearing to achieve coaxial connection between the polarization transition plate 30 and the rotating bearing, while also ensuring high concentricity between the rotating bearing and the polarization transition plate 30 when they rotate.

[0039] To further explain, in order to ensure the stability of the connection between the polarization adapter plate 30 and the rotating bearing after assembly, it is preferable that the polarization adapter plate 30 is reliably connected to the outer ring of the rotating bearing through the fourth connector 22; the fourth connector 22 is arranged along the axial direction of the polarization adapter plate 30, and there are multiple fourth connectors 22, which are preferably arranged at equal intervals around the circumference of the polarization adapter plate 30; in order not to affect the fit between the polarization adapter plate 30 and the antenna tooling base plate 40, it is preferable that the corresponding end of the fourth connector 22 extends into the interior of the polarization adapter plate 30.

[0040] refer to Figure 2 and Figure 4 Similarly, after ensuring the coaxial assembly of the polarization adapter plate 30 and the transmission bearing, it is necessary to achieve the coaxial assembly of the polarization adapter plate 30 and the antenna tooling base plate 40. Preferably, a second mating platform 32 is provided on the end face of the polarization adapter plate 30 facing the antenna tooling base plate 40, and a second mating hole 41 is opened on the end face of the antenna tooling base plate 40 opposite to the polarization adapter plate 30. The second mating hole 41 and the second mating platform 32 are fitted with a clearance to ensure the concentricity of the connection between the polarization adapter plate 30 and the antenna tooling base plate 40.

[0041] Further optimization involves ensuring that the outer diameter of the polarization adapter plate 30 is the same as the outer diameter of the antenna tooling base plate 40, thereby reducing the difficulty of processing.

[0042] To ensure the connection stability between the antenna fixture base plate 40 and the polarization adapter plate 30, the antenna fixture base plate 40 is detachably connected to the polarization adapter plate 30 via the first connector 43. At this time, the first connector 43 is set along the axial direction of the antenna fixture base plate 40. In order to avoid interference between the first connector 43 and the transmission bearing, it is preferable that the first connector 43 is located outside the first mating hole 31 and inside the second mating hole 41.

[0043] There are multiple first connectors 43. Taking four first connectors 43 as an example, the four first connectors 43 are arranged in a circle with equal spacing around the axis of the antenna fixture base plate 40.

[0044] To facilitate antenna testing, it is preferable to first connect the antenna fixture base plate 40 and the antenna under test 50 coaxially in a one-to-one correspondence before testing. During the testing process, the antenna under test 50 can be quickly replaced by disassembling and assembling the antenna fixture base plate 40, which improves work efficiency while ensuring the concentricity between the antenna under test 50 and the antenna fixture base plate 40.

[0045] Therefore, the polarization adapter plate 30 and the antenna fixture base plate 40 need to be frequently disassembled. In order to avoid frequent handling and loss during disassembly and assembly, the first connector 43 is preferably a non-loosening screw. During disassembly and assembly, the first connector 43 remains connected to the antenna fixture base plate 40 to improve disassembly and assembly efficiency.

[0046] For further explanation, please refer to Figure 1 and Figure 2 Since the antenna under test 50 needs to be connected to various cables during the testing process, the preferred high concentricity antenna testing device also includes an antenna support base 60. The antenna under test 50 is connected to the antenna fixture base plate 40 through the antenna support base 60, and the antenna support base 60 is located between the antenna under test 50 and the antenna fixture base plate 40.

[0047] refer to Figure 2 and Figure 5 At this time, in order to ensure the concentricity of the antenna fixture base plate 40 and the antenna support 60, it is preferable to open a third mating hole 42 on the end face of the antenna fixture base plate 40 facing the antenna support 60, and to set a third mating platform 61 at one end of the antenna support 60. The third mating hole 42 is coaxially arranged with the antenna fixture base plate 40, and the third mating platform 61 is coaxially arranged with the antenna support 60. The third mating hole 42 and the third mating platform 61 are clearance-fitted to achieve coaxial connection between the two.

[0048] Similarly, in order to ensure the stability of the connection between the antenna support 60 and the antenna tooling base plate 40, the two are reliably connected by the second connector 63.

[0049] The other end of the antenna support 60 is connected to the antenna under test 50. Preferably, a cavity is provided inside the antenna support 60 to house the cables and related equipment connected to the antenna under test 50. More preferably, for ease of operation, an operation window 64 is provided on the side wall of the antenna support 60. The operation window 64 communicates with the cavity and can also reduce the weight of the antenna support 60 and reduce the connection pressure of the second connector 63. Preferably, there are multiple operation windows 64, which are equally spaced around the axis of the antenna support 60 on the inner wall of the antenna support 60 to further facilitate operation.

[0050] The antenna support 60 is preferably an integral structure, which increases its structural strength and rigidity and avoids deformation from affecting the concentricity between it and the antenna tooling base plate 40.

[0051] refer to Figure 1 , Figure 2 and Figure 6 Finally, in order to ensure the concentricity of the antenna under test 50 and the antenna support 60 after installation, it is preferable to provide an antenna connection substrate 70 at the corresponding end of the antenna support 60. The antenna connection substrate 70 has a connection hole 71, which is coaxially arranged with the antenna connection substrate 70. Therefore, before testing, the antenna under test 50 is coaxially connected to the antenna connection substrate 70 through the connection hole 71 to ensure the concentricity between the two.

[0052] Subsequently, a fourth mating hole 62 is opened on the end face of the antenna support 60 facing the antenna connection substrate 70. The fourth mating hole 62 and the outer ring of the antenna connection substrate 70 are coaxially connected through clearance fit. At the same time, the antenna support 60 and the antenna connection substrate 70 are reliably connected through a third connector 72.

[0053] To further explain, the transmission unit 20 and the polarization adapter plate 30, the polarization adapter plate 30 and the antenna tooling base plate 40, the antenna tooling base plate 40 and the antenna support 60, and the antenna support 60 and the antenna connecting substrate 70 are all fitted with clearances. The clearance fit is preferably H7 / g6. Based on the component fit tolerance design theory, the assembly accuracy of the high concentricity antenna test device is improved, and its test accuracy and reliability are guaranteed.

[0054] Meanwhile, the antenna fixture base plate 40 and the antenna support 60 can be quickly disassembled and assembled using screws that do not loosen, improving the efficiency of antenna testing.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit this utility model. Although this utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.

Claims

1. A high concentricity antenna test set comprising: The application relates to a high-concentricity antenna testing device which comprises a driving unit (10), a transmission unit (20), a polarization adapter plate (30) and an antenna tool base plate (40), wherein the polarization adapter plate (30) is arranged between the transmission unit (20) and the antenna tool base plate (40). The driving unit (10) is connected with the input end of the transmission unit (20), the output end of the transmission unit (20) is provided with a first matching table (21), one end of the polarization adapter plate (30) is provided with a first matching hole (31), the other end of the polarization adapter plate (30) is provided with a second matching table (32), and one end of the antenna tool base plate (40) is provided with a second matching hole (41). The first matching hole (31) and the second matching table (32) are coaxially arranged on the polarization adapter plate (30), the second matching hole (41) is coaxially arranged on the antenna tool base plate (40), the first matching table (21) is matched with the first matching hole (31), and the second matching table (32) is matched with the second matching hole (41).

2. The high concentricity antenna test device of claim 1, wherein, The polarization adapter plate (30) is detachably connected with the antenna tool base plate (40).

3. The high concentricity antenna test device of claim 2, wherein, A plurality of first connecting pieces (43) are arranged on the antenna tool base plate (40), the first connecting pieces (43) are arranged in parallel to the axis of the antenna tool base plate (40), one end of each first connecting piece (43) is located outside the antenna tool base plate (40), the other end of each first connecting piece (43) extends through the antenna tool base plate (40) to the inside of the polarization adapter plate (30) and is connected with the polarization adapter plate (30), the first connecting pieces (43) are circumferentially arranged around the axis of the antenna tool base plate (40), and the first connecting pieces (43) are located outside the second matching hole (41).

4. The high concentricity antenna test device of claim 3, wherein, The first connecting pieces (43) are non-loose screws.

5. The high concentricity antenna test device of claim 3, wherein, The high-concentricity antenna testing device further comprises an antenna support seat (60), one end of the antenna support seat (60) is provided with a third matching table (61), the third matching table (61) is coaxially arranged on the antenna support seat (60), the other end of the antenna tool base plate (40) is provided with a third matching hole (42), and the third matching hole (42) is coaxially arranged on the antenna tool base plate (40). The third matching hole (42) is matched with the third matching table (61), the antenna tool base plate (40) is arranged between the polarization adapter plate (30) and the antenna support seat (60), and the first connecting pieces (43) are located on the circumferential side of the antenna support seat (60).

6. The high concentricity antenna test device of claim 5, wherein, The antenna support seat (60) is of an integrated structure.

7. The high concentricity antenna test device of claim 5, wherein, The antenna support seat (60) is connected with the antenna tool base plate (40) through a second connecting piece (63).

8. The high concentricity antenna test device of claim 5, wherein, An accommodating cavity is arranged in the antenna support seat (60), the accommodating cavity is coaxially arranged on the antenna support seat (60), an operation window (64) is arranged on the side wall of the antenna support seat (60), and the operation window (64) is communicated with the accommodating cavity.

9. The high concentricity antenna test device of claim 5, wherein, The high-concentricity antenna testing device further comprises an antenna connecting base plate (70), a connecting hole (71) is arranged on the antenna connecting base plate (70), and the connecting hole (71) is coaxially arranged on the antenna connecting base plate (70). The other end of the antenna support seat (60) is provided with a fourth matching hole (62), which is matched with the outer wall of the antenna connecting substrate (70).

10. The high concentricity antenna test device of claim 9, wherein, The antenna connecting substrate (70) is connected with the antenna support seat (60) through a third connecting piece (72).

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