Split satellite antenna reflector and method for adjusting the accuracy of the reflector and satellite antenna

Abstract

The application provides a split satellite antenna reflector and a method for adjusting the accuracy of the reflector, and a satellite antenna. The antenna reflector comprises multiple reflector segments, a center positioning connection structure and an outer edge positioning connection structure. Each reflector segment comprises a reflecting surface. The center positioning connection structure comprises a center positioning ring, which has an inner end positioning reference surface. Each radial inner end is attached to and detachably fixed to the inner end positioning reference surface. The outer edge positioning connection structure comprises a draw-nut fastening column, which comprises a positioning flange. The positioning flange has an outer end positioning reference surface. Each radial outer end is attached to and detachably fixed to the outer end positioning reference surface. The application effectively prevents the positioning reference connection from being on the back or side of the reflector in the prior art, which leads to a large deviation of the overall accuracy of the reflector emission curve and cannot meet the requirements of interchangeable high-frequency satellite antennas on the accuracy of the reflector profile.

Description

Technical Field

[0001] This invention relates to the field of satellite antenna design technology, specifically to a method for adjusting the reflector surface and profile accuracy of a segmented satellite antenna, and a satellite antenna. Background Technology

[0002] The satellite antenna reflector is a key component of a satellite antenna, playing a crucial role in reflecting and focusing radio waves and transmitting signals. With the increasing prevalence of satellite constellations, the requirements for portable satellite communication systems are becoming more demanding. Traditional reflector manufacturing is a customized process. Existing technologies for segmented satellite antenna reflectors often employ connecting structures on the back or side of the reflector to ensure reliable connection between adjacent lobes and minimize interference. However, the thickness of each lobe may vary, resulting in steps between adjacent lobes when connecting from the side or back. This leads to significant deviations in the overall accuracy of the reflector's reflection curve, failing to meet the surface accuracy requirements of interchangeable high-frequency satellite antennas. Based on these shortcomings of existing technologies, this invention is proposed. Summary of the Invention

[0003] The method for adjusting the reflector surface and profile accuracy of the segmented satellite antenna designed in this invention can overcome the shortcomings of the prior art, where the connection positioning reference of the segmented satellite antenna reflector surface is on the back or side of the reflector surface, resulting in a large overall accuracy deviation of the reflector surface reflection curve, which cannot meet the profile accuracy requirements of interchangeable high-frequency satellite antennas.

[0004] The present invention aims to provide a segmented satellite antenna reflector, comprising multiple reflective lobes, each lobe including a reflective working surface and a back surface of the lobe located on the opposite side of the reflective working surface, and further including a central positioning connection structure and an outer edge positioning connection structure. Each reflective lobe has a radially inner end and a radially outer end. The central positioning connection structure includes a central positioning ring, which has an inner end positioning reference surface corresponding to the side of each radially inner end facing the reflective working surface. Each radially inner end is attached to and detachably fixed to the inner end positioning reference surface. The outer edge positioning connection structure includes a pull stud fastening post, which includes a positioning flange. The positioning flange has an outer end positioning reference surface corresponding to the side of each radially outer end facing the reflective working surface. Each radially outer end is attached to and detachably fixed to the outer end positioning reference surface.

[0005] In some embodiments, the inner end positioning reference surface is a continuous annular surface arranged around the central axis of the central positioning ring; and / or, the inner end positioning reference surface has a plurality of first through holes that correspond one-to-one with the positions of each of the reflective petals, and the central positioning connection structure further includes threaded connecting studs and wing nuts, and each of the reflective petals is fixedly connected to the central positioning ring through the connecting studs and wing nuts.

[0006] In some embodiments, connecting plates are provided on both sides of the radial outer end of each reflective petal, and each connecting plate protrudes from the outer circle of the reflective petal along the extension direction of the reflective working surface, and the outer edge positioning connection structure is connected between the connecting plates of two adjacent reflective petals.

[0007] In some embodiments, the outer edge positioning connection structure further includes a connecting block and a nut that can be threadedly connected to the pull stud fastening post. The connecting block is fixedly connected to the connecting plate. A semi-circular groove is formed on the circumferential outer end face of each connecting block. The semi-circular grooves of two adjacent connecting blocks together form a through hole for the pull stud fastening post. The positioning flange and the nut are respectively located at the two axial ends of the through hole, and the nut is located on the side of the through hole away from the reflective working surface.

[0008] In some embodiments, a mounting groove is formed on the connecting plate, the connecting block is bonded to the mounting groove, the end face of the connecting block near the reflective working surface is the inner end face, the inner end face is located on the extended arc surface of the reflective working surface, and the outer end positioning reference surface is in contact with the inner end face.

[0009] In some embodiments, the connecting plate is integrally formed with the reflective lobe.

[0010] In some embodiments, the end face of the connecting block away from the reflective working surface has a protrusion extending toward the side away from the reflective working surface. The circumferential inner side of the protrusion is a guiding slope so that the circumferential width of the protrusion gradually decreases along its protrusion direction. The nut component includes a gap adjustment locking block and a locking nut. The gap adjustment locking block has a U-shaped opening, and the protrusions of two adjacent connecting blocks can be located within the U-shaped opening. The nut component is threadedly connected to the pull stud fastening post through the locking nut, and the gap adjustment locking block is located between the locking nut and the connecting block.

[0011] In some embodiments, the locking nut has a spherical protrusion on one end face facing the gap adjustment locking block, and the gap adjustment locking block has a spherical groove on one end face facing the locking nut. The spherical protrusion and the spherical groove are spherically engaged, and the protrusion height of the spherical protrusion is greater than the recess depth of the spherical groove. The gap adjustment locking block and the pull stud fastening post are fitted together, and there is an annular gap between them.

[0012] The present invention also provides a method for adjusting the surface accuracy of the reflector of a segmented satellite antenna as described above, comprising the following steps:

[0013] The radial inner ends of each of the reflective petals are fastened to the inner end positioning reference surface of the central positioning ring.

[0014] Each of the aforementioned outer edge positioning connection structures is used to form a preliminary positioning of the radial outer ends of each of the two adjacent reflective lobes, and the diameter of each pull stud fastening post in the aforementioned outer edge positioning connection structure is larger than the diameter of the semi-circular groove by a preset value A.

[0015] The surface accuracy of the reflective working surface formed by each reflective lobe after preliminary positioning is measured.

[0016] When the surface accuracy is lower than the target accuracy, replace each rivet fastening post in the outer edge positioning connection structure with a rivet fastening post with a smaller diameter, and measure the surface accuracy again until the surface accuracy reaches the target accuracy.

[0017] When the surface accuracy is higher than the target accuracy, replace each rivet fastening post in the outer edge positioning connection structure with a rivet fastening post with a larger diameter, and measure the surface accuracy again until the surface accuracy reaches the target accuracy.

[0018] The present invention also provides a satellite antenna, including the above-described segmented satellite antenna reflector.

[0019] The present invention relates to a method for adjusting the reflector surface and profile accuracy of a segmented satellite antenna. The satellite antenna employs a central positioning connection structure and an outer edge positioning connection structure to reliably connect the radially inner and radially outer ends of each reflector lobe. Simultaneously, it utilizes the inner and outer positioning reference surfaces of each lobe to contact and adhere to the reflective working surface of each reflector lobe. Objectively, each reflector lobe uses its reflective working surface as the installation reference. By controlling the shape and position accuracy of each inner and outer positioning reference surface, reliable assurance of the profile accuracy of the transmitting working surface can be achieved. This effectively eliminates the shortcomings of existing technologies where the connecting positioning reference is located on the back or side of the reflector surface, resulting in a large overall accuracy deviation of the reflector surface emission curve and failing to meet the profile accuracy requirements of interchangeable high-frequency satellite antennas. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the reflective surface of the segmented satellite antenna in an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A partial schematic diagram of the outer edge positioning and connection structure for positioning and connecting two adjacent reflective lobes;

[0022] Figure 3 yes Figure 2 A three-dimensional structural diagram of the outer edge positioning and connection structure in the middle;

[0023] Figure 4 yes Figure 3 A three-dimensional structural diagram of the connecting block in the diagram;

[0024] Figure 5 yes Figure 3 A three-dimensional structural diagram of the gap adjustment locking block in the middle;

[0025] Figure 6 yes Figure 1 A partial schematic diagram of the radial inner end positioning connection of the central positioning connection structure to each reflector lobe.

[0026] In the diagram: 1. Reflector flap; 11. Reflector working surface; 12. Connecting plate; 2. Center positioning connection structure; 21. Center positioning ring; 210. Inner end positioning reference surface; 221. Connecting stud; 222. Wing nut; 3. Outer edge positioning connection structure; 31. Pull stud fastening post; 310. Outer end positioning reference surface; 311. Positioning flange; 32. Connecting block; 321. Semicircular groove; 322. Protrusion; 33. Nut; 331. Gap adjustment locking block; 3311. Spherical groove; 332. Locking nut; 3321. Spherical protrusion. Detailed Implementation

[0027] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of regions and layers is exaggerated. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted.

[0028] The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the invention. However, those skilled in the art will recognize that the invention can be practiced without one or more of the specific details described, or other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

[0029] The following example describes the method for adjusting the reflector surface and profile accuracy of a segmented satellite antenna according to the present invention, and the satellite antenna itself. This example is only a part of the embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. All other embodiments obtained by those skilled in the art without inventive effort should be covered within the scope of protection of the present invention.

[0030] Please refer to the reference. Figures 1 to 6 According to an embodiment of the present invention, a segmented satellite antenna reflector is provided, comprising multiple reflective lobes 1, each of the reflective lobes 1 including a reflective working surface 11 and a back surface of the lobe located on the opposite side of the reflective working surface 11 (not indicated in the figure). The segmented satellite antenna reflector further includes a central positioning connection structure 2 and an outer edge positioning connection structure 3. Each of the reflective lobes 1 has a radially inner end and a radially outer end. The central positioning connection structure 2 includes a central positioning ring 21, the central positioning ring 21 having an inner end positioning reference surface 210 corresponding to the side surface of each radially inner end facing the reflective working surface 11 (i.e., ...). Figure 1 The bottom surface of the center positioning ring 21 in the indicated orientation), each of the radial inner ends is attached to and detachably fixed to the inner end positioning reference surface 210, the outer edge positioning connection structure 3 includes a pull stud fastening post 31, the pull stud fastening post 31 includes a positioning flange 311, the positioning flange 311 has an outer end positioning reference surface 310 corresponding to the side of each of the radial outer ends facing the reflective working surface 11 (that is, the ... outer edge positioning connection structure 3 includes a pull stud fastening post 31), the outer edge positioning connection structure 3 includes a pull stud fastening post 31 including a positioning flange 311, the positioning flange 311 has an outer end positioning reference surface 310 corresponding to the side of each of the radial outer ends facing the reflective working surface 11 (that is, the outer edge positioning connection structure 3 includes a pull stud fastening post 31 including a positioning flange 311), the outer edge positioning connection structure 3 includes a pull stud fastening post 31 including a positioning flange 311, the positioning flange 311 has an outer end positioning reference surface 310 corresponding to the side of each of the radial outer ends facing the reflective working surface 11, the outer edge positioning connection structure 3 includes a pull stud fastening post 31 including a positioning flange 311, the positioning flange 311 has an outer end positioning reference surface 310 corresponding to the side of each of the radial outer ends facing the reflective working surface 11, the outer edge positioning connection structure 3 includes a pull stud Figure 1 The bottom surface of the positioning flange 311 in the indicated orientation), each of the radial outer ends is attached and detachably fixed to the outer end positioning reference surface 310. It can be understood that the radial inner end that is attached to the inner end positioning reference surface 210 can objectively be part of the radial inner region of the aforementioned reflective working surface 11, and the radial outer end that is attached to the outer end positioning reference surface 310 can objectively be part of the radial outer region of the aforementioned reflective working surface 11. Attachment refers to the matching and consistency of the curvature of the two surfaces to ensure a gapless contact between the two attached components, thereby achieving shape and position control of the contact part.

[0031] In this technical solution, the central positioning connection structure 2 and the outer edge positioning connection structure 3 are used to reliably connect the radial inner end and the radial outer end of each reflector 1, respectively. At the same time, the inner end positioning reference surface 210 and the outer end positioning reference surface 310 of each reflector 1 are used to contact and fit with the reflective working surface 11 of each reflector 1. Objectively, each reflector 1 uses its reflective working surface 11 as the installation reference. The accuracy of the surface profile of the transmitting working surface can be reliably guaranteed by controlling the shape and position accuracy of each inner end positioning reference surface 210 and the outer end positioning reference surface 310. This effectively eliminates the shortcomings of the prior art, where the connection positioning reference is on the back or side of the reflector surface, resulting in a large deviation in the overall accuracy of the reflector surface emission curve, which cannot meet the surface accuracy requirements of interchangeable high-frequency satellite antennas.

[0032] In some embodiments, the inner end positioning reference surface 210 is a continuous annular surface arranged around the central axis of the central positioning ring 21. This facilitates the machining of the reference surface of the central positioning ring 21, for example, by using a one-time milling method, reducing machining costs and improving the positioning accuracy of the radial inner end. The top surface of the aforementioned central positioning ring 21 can be connected to the feed source.

[0033] The inner end positioning reference surface 210 has a plurality of first through holes (not labeled in the figure) that correspond one-to-one with the positions of each of the reflective petals 1. The center positioning connection structure 2 also includes a threaded connecting stud 221 and a wing nut 222. The wing nut 222 can improve the convenience of component assembly and disassembly. Each of the reflective petals 1 is fixedly connected to the center positioning ring 21 through the connecting stud 221 and the wing nut 222.

[0034] In some embodiments, connecting plates 12 are provided on both circumferential sides of the radially outer end of each reflective petal 1. Each connecting plate 12 protrudes from the outer circle of the reflective petal 1 along the extending direction of the reflective working surface 11, and the outer edge positioning connection structure 3 is connected between the connecting plates 12 of each adjacent reflective petal 1. That is, the corresponding connecting plate 12 is provided in the extended area outside the area of ​​the reflective working surface 11 of each reflective petal 1, and the outer edge positioning connection structure 3 is provided on the connecting plate 12, which can effectively reduce the adverse obstruction of the reflected signal by the outer edge positioning connection structure 3 in the area of ​​the reflective working surface 11. In a preferred embodiment, the connecting plate 12 is integrally formed with the reflective petal 1, that is, the connecting plate 12 is objectively part of the reflective petal 1. This can ensure the positional consistency between the connecting plate 12 and the reflective working surface 11, thereby ensuring the reliability of the positioning reference and the accuracy of the surface precision adjustment.

[0035] See also Figure 2 and Figure 3As shown, in some embodiments, the outer edge positioning connection structure 3 further includes a connecting block 32 and a nut 33 that can be threadedly connected to the pull stud fastening post 31. The connecting block 32 is fixedly connected to the connecting plate 12. A semi-circular groove 321 is formed on the circumferential outer end face of each connecting block 32. The semi-circular grooves 321 of two adjacent connecting blocks 32 together form the through hole of the pull stud fastening post 31 (not indicated in the figure). The positioning flange 311 and the nut 33 are respectively located at the two axial ends of the through hole, and the nut 33 is located on the side of the through hole away from the reflective working surface 11.

[0036] In this technical solution, by fixing connecting blocks 32 on the connecting plates 12 of each reflective petal 1, and the rivet fastening post 31 passes through the semi-circular grooves 321 of the two adjacent connecting blocks 32, the size of the joint between the two adjacent reflective petals 1 can be adjusted by increasing the diameter of the rivet fastening post 31, thereby enabling the adjustment of the surface accuracy of the assembled reflective working surface 11.

[0037] In some embodiments, a mounting groove (not shown in the figure) is formed on the connecting plate 12, and the connecting block 32 is bonded (by adhesive that meets performance standards) into the mounting groove. The end face of the connecting block 32 closest to the reflective working surface 11 is the inner end face (i.e., Figure 2 The inner end face is located on the extended arc surface of the reflective working surface 11 (top surface shown in the orientation), so that the inner end face of the connecting block 32 is objectively consistent with the surface accuracy of the reflective working surface 11, that is, the transfer of the installation positioning reference is realized, and the outer end positioning reference surface 310 is in contact with the inner end face.

[0038] In this technical solution, the connecting block 32 and the connecting plate 12 are bonded together, allowing for greater flexibility in their structural composition and material selection. This enables the connecting block 32 to be made of a material with higher structural strength, thus resisting damage from tensile and compressive forces during positioning. Meanwhile, each reflective flap 1 can be constructed using a structure of carbon fiber composite material and a honeycomb sandwich layer, based on the requirements of portability and low weight. Specifically, the carbon fiber composite material serves as the surface support layer, and the honeycomb material serves as the core layer (i.e., the sandwich layer). High-temperature bonding with polymer adhesive is used for adhesion.

[0039] In some embodiments, the end face of the connecting block 32 away from the reflective working surface 11 has a protrusion 322 extending toward the side away from the reflective working surface 11. The inner circumferential side of the protrusion 322 is a guiding slope so that the circumferential width of the protrusion 322 gradually decreases along its protrusion direction. When two adjacent connecting blocks 32 are spliced, the two protrusions 322 form a frustum structure with a smaller outer side and a larger inner side. The nut component 33 includes a gap adjustment locking block 331 and a locking nut 332. The gap adjustment locking block 331 has a U-shaped opening, and the protrusions 322 of two adjacent connecting blocks 32 can be placed in the U-shaped opening. The nut component 33 is threadedly connected to the pull stud fastening post 31 through the locking nut 332, and the gap adjustment locking block 331 is located between the locking nut 332 and the connecting block 32.

[0040] In this technical solution, the circumferential connection of the two adjacent reflective petals 1 is achieved by the cooperation of the protrusions 322 of the two adjacent connecting blocks 32 with the U-shaped opening of the gap adjustment locking block 331. At the same time, the axial locking and positioning are achieved by the threaded connection between the locking nut 332 and the fastening post 31. Meanwhile, the cooperation between the U-shaped opening and the guide slope can adjust the circumferential distance between the two adjacent reflective petals 1, thereby achieving the purpose of adjusting the surface accuracy of the reflective working surface 11.

[0041] See also Figures 2 to 5 As shown, in some embodiments, the locking nut 332 has a spherical protrusion 3321 on one end face facing the gap adjustment locking block 331, and the gap adjustment locking block 331 has a spherical groove 3311 on one end face facing the locking nut 332. The spherical protrusion 3321 and the spherical groove 3311 are spherically engaged, and the protrusion height of the spherical protrusion 3321 is greater than the recess depth of the spherical groove 3311. The gap adjustment locking block 331 and the pull pin fastening post 31 are fitted together and there is an annular gap between them. The aforementioned spherical protrusion 3321 is objectively a hemisphere.

[0042] In this technical solution, when there are shape and position differences (e.g., non-parallelism) between the protrusions 322 of two adjacent connecting blocks 32, the aforementioned annular gap can allow the position of the gap adjustment locking block 331 to have a certain degree of adjustment space. Thus, under the cooperation of the aforementioned spherical protrusion 3321 and spherical groove 3311, the locking nut 332 can achieve balanced pressing of the gap adjustment locking block 331.

[0043] According to an embodiment of the present invention, a method for adjusting the surface accuracy of the reflector of a segmented satellite antenna as described above is also provided, comprising the following steps:

[0044] The radial inner ends of each reflective petal 1 are fastened to the inner end positioning reference surface 210 of the central positioning ring 21, thus forming a precise positioning of the radial inner ends of each reflective petal 1, and each reflective petal 1 forms an integral emission working surface with a spherical shape.

[0045] Each of the outer edge positioning connection structures 3 is used to form a preliminary positioning of the radial outer ends of each of the two adjacent reflective petals 1. The diameter of each pull stud fastening post 31 in the outer edge positioning connection structure 3 is larger than the diameter of the semi-circular groove 321 by a preset value A. The aforementioned preset value A can be obtained by the pre-shipment calibration.

[0046] The surface accuracy of the reflective working surface 11 formed by each reflective lobe 1 after preliminary positioning is measured. If the surface accuracy is consistent with the target accuracy at this time, no further operation is required.

[0047] When the surface accuracy is lower than the target accuracy, the fastening posts 31 of the outer edge positioning connection structure 3 are replaced with fastening posts 31 of smaller diameter to reduce the distance between adjacent reflector lobes 1. This causes the spherical horn formed by the reflective working surface 11 to shrink inward, and the surface accuracy is measured again until the surface accuracy reaches the target accuracy. When the surface accuracy is higher than the target accuracy, the fastening posts 31 of the outer edge positioning connection structure 3 are replaced with fastening posts 31 of larger diameter to increase the distance between adjacent reflector lobes 1. This causes the spherical horn formed by the reflective working surface 11 to expand outward, and the surface accuracy is measured again until the surface accuracy reaches the target accuracy. This ensures that the surface accuracy can be easily adjusted when one or more reflector lobes 1 need to be replaced due to damage during actual application of the satellite antenna reflector. Of course, this adjustment process also applies before the equipment leaves the factory. The aforementioned surface accuracy specifically refers to whether the surface profile of the assembled satellite antenna reflector is in an ideal state. If the assembled profile is below the ideal profile, it indicates that the horn opening is too large outward and needs to be narrowed. Conversely, if the assembled profile is above the ideal profile, it indicates that the horn opening is too large inward and needs to be widened. "Above the profile" refers to the side of the ideal profile closer to the satellite antenna feed, and "below the profile" refers to the side of the ideal profile farther from the satellite antenna feed. It is particularly important to emphasize that because the surface accuracy can be precisely adjusted through the outer edge positioning connection structure in this invention, the reflector lobes 1 of the satellite antenna reflector have very high interchangeability, thereby improving the versatility of the equipment.

[0048] According to an embodiment of the present invention, a satellite antenna is also provided, including the above-described segmented satellite antenna reflector.

[0049] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A segmented satellite antenna reflector, characterized in that, The system includes a multi-lobed reflective lobes (1), each of which includes a reflective working surface (11) and a back surface of the lobes located on the opposite side of the reflective working surface (11). It also includes a central positioning connection structure (2) and an outer edge positioning connection structure (3). Each reflective lobe (1) has a radially inner end and a radially outer end. The central positioning connection structure (2) includes a central positioning ring (21), which has an inner end positioning reference surface (210) corresponding to the side of each radially inner end facing the reflective working surface (11). Each radially inner end is attached to and detachably fixed to the inner end positioning reference surface (210). The outer edge positioning connection structure (3) includes a rivet fastening post (31), the rivet fastening post (31) includes a positioning flange (311), the positioning flange (311) has an outer end positioning reference surface (310) corresponding to the side of each radial outer end facing the reflective working surface (11), each radial outer end is attached and detachably fixed to the outer end positioning reference surface (310); each reflective petal body (1) has connecting plates (12) on both circumferential sides of its radial outer end; the outer edge positioning connection structure (3) also includes a connecting block (32) and a nut (33) that can be threadedly connected to the rivet fastening post (31), the connecting block ( 32) Fixedly connected to the connecting plate (12), each connecting block (32) has a semi-circular groove (321) formed on its circumferential outer end face. The semi-circular grooves (321) of two adjacent connecting blocks (32) together form the through hole of the rivet fastening post (31). The positioning flange (311) and the nut (33) are respectively located at the two axial ends of the through hole, and the nut (33) is located on the side of the through hole away from the reflective working surface (11). The end face of the connecting block (32) away from the reflective working surface (11) has a protrusion (322) extending toward the side away from the reflective working surface (11). The inner circumferential side of the protrusion (322) is a guiding slope so that the circumferential width of the protrusion (322) becomes smaller and smaller along its protrusion direction. The nut (33) includes a gap adjustment locking block (331) and a locking nut (332). The gap adjustment locking block (331) has a U-shaped opening. The protrusions (322) of two adjacent connecting blocks (32) can be located in the U-shaped opening. The nut (33) is threadedly connected to the pull stud fastening post (31) through the locking nut (332). The gap adjustment locking block (331) is located between the locking nut (332) and the connecting block (32).

2. The segmented satellite antenna reflector according to claim 1, characterized in that, The inner end positioning reference surface (210) is a continuous annular surface arranged around the central axis of the central positioning ring (21); and / or, the inner end positioning reference surface (210) has a plurality of first through holes that correspond to the positions of each of the reflective petals (1), and the central positioning connection structure (2) further includes a threaded connecting stud (221) and a wing nut (222), and each of the reflective petals (1) is fixedly connected to the central positioning ring (21) through the connecting stud (221) and the wing nut (222).

3. The segmented satellite antenna reflector according to claim 1, characterized in that, Each of the connecting plates (12) protrudes out of the outer circle of the reflective petal (1) along the extension direction of the reflective working surface (11), and the outer edge positioning connection structure (3) is connected between the connecting plates (12) of each of the two adjacent reflective petals (1).

4. The segmented satellite antenna reflector according to claim 1, characterized in that, An installation groove is formed on the connecting plate (12), and the connecting block (32) is bonded to the installation groove. The end face of the connecting block (32) near the reflective working surface (11) is the inner end face. The inner end face is located on the extended arc surface of the reflective working surface (11), and the outer end positioning reference surface (310) is in contact with the inner end face.

5. The segmented satellite antenna reflector according to claim 4, characterized in that, The connecting plate (12) and the reflective petal (1) are integrally formed.

6. The segmented satellite antenna reflector according to claim 1, characterized in that, The locking nut (332) has a spherical protrusion (3321) on one end face facing the gap adjustment locking block (331), and the gap adjustment locking block (331) has a spherical groove (3311) on one end face facing the locking nut (332). The spherical protrusion (3321) and the spherical groove (3311) are spherically engaged, and the protrusion height of the spherical protrusion (3321) is greater than the recess depth of the spherical groove (3311). The gap adjustment locking block (331) is fitted with the pull pin fastening post (31) and there is an annular gap between them.

7. A method for adjusting the surface accuracy of a segmented satellite antenna reflector as described in claim 6, characterized in that, Includes the following steps: The radial inner ends of each of the reflective petals (1) are fastened to the inner end positioning reference surface (210) of the central positioning ring (21); Each of the outer edge positioning connection structures (3) is used to form a preliminary positioning of the radial outer end of each of the two adjacent reflective petals (1), and the diameter of each pull fastening post (31) in the outer edge positioning connection structure (3) is larger than the diameter of the semi-circular groove (321) by a preset value A. The surface accuracy of the reflective working surface (11) formed by the reflective petal body (1) after preliminary positioning is measured; When the surface accuracy is lower than the target accuracy, replace each rivet fastening post (31) in the outer edge positioning connection structure (3) with a rivet fastening post (31) with a smaller diameter, and measure the surface accuracy again until the surface accuracy reaches the target accuracy. When the surface accuracy is higher than the target accuracy, replace each rivet fastening post (31) in the outer edge positioning connection structure (3) with a rivet fastening post (31) with a larger diameter, and measure the surface accuracy again until the surface accuracy reaches the target accuracy.

8. A satellite antenna, characterized in that, Includes the segmented satellite antenna reflector as described in any one of claims 1 to 6.

Images