Reflector antenna film electrode surface positioning connection and adjustable tensioning device

Abstract

The invention discloses a reflecting surface antenna film electrode surface positioning connection and adjustable tensioning device, which comprises an electrode surface uniform tensioning device which is arranged on a film electrode surface, is connected with the film electrode surface, a rib plate strip and a rib strip through a moving assembly with an arch-shaped structure, and is used for realizing the positioning connection of the film electrode surface and a cable net. Tensioning the surface of the film electrode into a paraboloid; according to the cable-membrane connecting device, the reflecting surface limiting cable section, the vertical cable section and the transverse cable section are clamped into a whole through the male buckle and the female buckle, and the cable-membrane connecting device is used for positioning the membrane electrode surface and the rib plate strip and adjustably and uniformly tensioning the membrane electrode surface to form an ideal paraboloid. According to the invention, reliable positioning connection and adjustable uniform tensioning of the film electrode surface of the radial rib film reflector antenna can be realized, the flatness of the film electrode surface is ensured, and the electrostatic force control precision of the film reflector is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electrostatically formed film antennas and their application, and in particular relates to a film electrode surface positioning connection and an adjustable uniform tensioning device for a satellite-borne radial rib film reflector antenna. Background Art

[0002] With the rapid development of my country's aerospace science and technology, the demand for large-caliber and high-precision satellite antennas in the fields of space communications, deep space exploration, military reconnaissance, etc. is constantly increasing. Thin-film reflector antennas are an important development trend of future satellite antennas and a hot topic of research in various countries because they are easier to meet the requirements of large-caliber, high-precision and light weight. The radial rib electrostatically formed thin-film reflector antenna is a type of high-precision reflector antenna. Its basic electrode structure is formed by laying several thin-film electrode sheets on the basic cable net surface; the thin-film reflector surface is made into the required parabolic shape by one-piece molding technology, and is installed and suspended a certain distance above the electrode structure; the deformation of the reflector surface is controlled by controlling the electrostatic force generated by the voltage between the electrode film and the reflector film to achieve a high-precision reflective surface.

[0003] The key to high-precision assembly of radial rib thin film reflector antennas is the positioning connection of the thin film electrode surface, including the positioning connection between the thin film electrode surface and the cable net, and the positioning connection between the thin film electrode surface and the ribs. The traditional method of making a basic thin film electrode surface is to cut and paste the triangular electrode membrane of designed size on the basic cable net. The pasted electrode membrane is laid in the air after the basic cable net is built. It is difficult to ensure that the adjacent edges of the two electrode membranes are evenly pasted, it is difficult to ensure the surface is flat, and there will be stress concentration. At the same time, pasting and connecting the thin film electrode surface will cause pasting failure due to excessive internal stress of the film.

[0004] Therefore, how to solve the problem that when the radial rib electrostatically formed thin film reflective antenna is installed, there is no positioning point, which makes the thin film electrode surface unable to be effectively positioned and connected with the cable net and the rib strips, and improper connection boundary treatment will cause the film to be subjected to concentrated force or local relaxation, and cannot be evenly tensioned to form a smooth electrode surface shape. This has become a technical problem that needs to be urgently solved in this field. Summary of the invention

[0005] In order to solve the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a positioning connection and adjustable tensioning device for the thin film electrode surface of a reflective surface antenna. By adopting an I-shaped cable net configuration as a support for the thin film electrode surface, the thin film electrode surface between the two ribs directly uses a preformed whole film with an ideal parabolic shape with a certain rigidity, and on this basis, a cable-membrane connection device and an electrode surface uniform tensioning device are used to achieve reliable positioning connection and adjustable uniform tensioning of the thin film electrode surface of the radial rib thin film reflective surface antenna, thereby ensuring the flatness of the thin film electrode surface and improving the control accuracy of the electrostatic force on the thin film reflective surface.

[0006] The present invention is achieved through the following technical solutions.

[0007] The present invention provides a reflector antenna thin film electrode surface positioning connection and adjustable tensioning device, comprising:

[0008] The electrode surface uniform tensioning device is arranged on the film electrode surface, and is connected to the film electrode surface, the rib strips and the ribs through a movable component in an arched structure, so as to realize the positioning connection between the film electrode surface and the cable net;

[0009] The cable-membrane connection device clamps the reflective surface limiting cable segment, the vertical cable segment and the transverse cable segment through the male buckle and the female buckle, and is used to position the thin film electrode surface and the rib strip and to adjustably and evenly tension the thin film electrode surface to form an ideal parabola.

[0010] Preferably, radial rib strips and ribs are arranged on the electrode surface of the antenna film, and the electrode surface uniform tensioning device, the rib strips, the film electrode surface and the ribs are connected by an adjusting column.

[0011] Preferably, the electrode surface uniform tensioning device comprises a pair of movable components in a bow-shaped structure, and the openings of the pair of movable components in a bow-shaped structure are butted against each other; the movable components are in a concave arc shape, and the rib strips and the ribs are connected by adjusting columns so that the rib strips form a concave arc shape, thereby tensioning the thin film electrode surface into a parabola.

[0012] Preferably, the movable component of the bow-shaped structure includes an upper groove, a lower groove and a film strip, a rib strip is inserted into the bottom surface of the upper groove, a film electrode surface is pasted above the lower groove, a film strip is laid on the bonding boundary of the film electrode surface, the middle part of the movable component is connected to the rib strip by an adjusting column, the end of the movable component is pressed and connected with the rib strip by screws, and the movable component is pressed and connected to the film electrode surface and the film strip by a set screw.

[0013] Preferably, the depth of the upper groove is slightly greater than the sum of the thickness of the nut and the thickness of the rib strip, the width of the upper groove is slightly less than half the width of the rib strip, and the width of the lower groove is 3 / 4 of the width of the moving component.

[0014] Preferably, a plurality of positioning openings are provided in the middle of the moving component and are arranged at intervals along the length direction of the groove above the moving component. The positioning openings are rectangular strip holes, and the adjusting column can move along the positioning openings.

[0015] Preferably, the cable-membrane connecting device includes a sub-buckle, a female buckle and a copper tube pressing nose. The sub-buckle is placed above the thin film electrode surface, and the female buckle is placed below the thin film electrode surface. The reflecting surface limiting cable segment passes through the sub-buckle and is connected to the thin film reflecting surface; the vertical cable segment passes through the female buckle, and the transverse cable segment passes through the female buckle to sew the vertical cable segment and the transverse cable segment at the designed node, and the sewn part is placed inside the female buckle; the copper tube pressing nose clamps the reflecting surface limiting cable segment and the vertical cable segment into a whole.

[0016] Preferably, a horizontal female buckle cable hole, a longitudinal female buckle through hole and a female buckle step hole are provided on the female buckle. The transverse cable segment passes through the female buckle cable hole to sew the vertical cable segment and the transverse cable segment at the designed node. The copper tube pressing nose is embedded in the female buckle step hole, and the depth of the female buckle step hole is half of the copper tube pressing nose.

[0017] Preferably, a transverse cable tightening cone groove is provided on the sub-buckle, and a transverse cable tightening cone is provided on the mother buckle, and the transverse cable tightening cone clamps the transverse cable segment in the slot hole of the transverse cable tightening cone groove which is smaller than the diameter of the cable segment.

[0018] Preferably, the gap between the transverse rope segment and the buckle boss is the thickness of the lower groove at the lower part of the upper groove in the moving component plus the lower groove wall.

[0019] The present invention adopts the above technical solution, which has the following beneficial effects:

[0020] 1. The design of the cable-membrane connection device can ensure that the cable net and the thin film electrode surface are stable and reliable, and the connection with high installation positioning accuracy can form an ideal shape of the thin film electrode surface on the cable net.

[0021] 2. The design of the cable-membrane connection device unifies the positioning height of the thin film electrode surface. The upper limit device is a boss set on the sub-buckle, and the lower end is limited by a transverse cable segment. By setting a transverse cable tightening cone, it can be ensured that the designed gap between the transverse cable segment and the thin film electrode surface is the same as the gap between the transverse cable segment and the thin film electrode surface at the rib, ensuring that the positioning height of the thin film electrode surface is consistent at the connection between the cable net and the rib strip. 3. The design of the electrode surface uniform tensioning device can uniformly compress the electrode surface boundary. During installation, the thin film electrode surface can be uniformly tensioned between the ribs according to the positioning point, so that the thin film electrode surface reaches the desired shape.

[0022] 4. The design of the electrode surface uniform tensioning device increases the adjustability of the film electrode surface. When the film electrode surface is deformed due to manufacturing errors, etc., it can be adjusted to offset the deformation.

[0023] 5. The design of the electrode surface uniform tensioning device is more reliable than the traditional method of sticking the thin film electrode surface, and can solve the problem of wrinkling on the surface of the thin film electrode surface caused by sticking failure during working time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 It is a schematic diagram of the positions of a radial rib thin film reflective surface antenna line film connecting device and an electrode surface uniform tensioning device in the overall structure of the antenna according to the present invention;

[0026] Figure 2 It is a structural schematic diagram of a uniform tensioning device of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of a moving component of a uniform tensioning device of the present invention;

[0028] Figure 4 It is a structural schematic diagram of an antenna thread membrane connection device of the present invention;

[0029] Figure 5 It is a schematic diagram of the buckle and the fixing cone structure of the antenna thread membrane connection device of the present invention;

[0030] Figure 6 This is a physical picture of a radial rib thin film reflector antenna thin film electrode surface positioning connection and adjustable uniform tensioning device made according to the design plan;

[0031] Figure 7 It is the shape error distribution diagram of the thin film electrode surface after the physical object is adjusted;

[0032] In the figure: I, cable-membrane connecting device, II, electrode surface uniform tensioning device, 1, film reflecting surface, 2, reflecting surface limiting cable segment, 3, sub-buckle, 301, sub-buckle cable hole, 302, sub-buckle boss, 4, film electrode surface, 5, transverse cable segment, 6, female buckle, 601, female buckle cable hole, 602, female buckle through hole, 603, female buckle step hole, 7, copper tube nose, 8, vertical cable segment, 9, moving component, 901, screw hole, 902, positioning port, 903, fixing screw hole, 904, lower groove, 905, upper groove, 10, screw, 11, nut, 12, rib strip, 13, fixing screw, 14, film strip, 15, adjusting column, 16, rib, 36, transverse cable fixing cone. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0034] Please see attached Figure 1 A device for positioning, connecting and adjusting uniform tensioning of a film electrode surface of a radial rib film reflective surface antenna comprises a plurality of radial electrode surface uniform tensioning devices II arranged on the film electrode surface 4, for realizing positioning connection between the film electrode surface 4 and the cable net, and a plurality of evenly distributed cable-membrane connection devices I arranged on the edge of the film electrode surface 4, for positioning the film electrode surface 4 and the rib strips and for adjusting and uniform tensioning the film electrode surface to form an ideal parabola.

[0035] The antenna film electrode surface 4 is arranged with radial ribs 12 and ribs 16. The electrode surface uniform tensioning device II, the ribs 12, the film electrode surface 4 and the ribs 16 are connected by adjusting the column 15 to achieve preliminary positioning of the film electrode surface 4. The electrode surface uniform tensioning device II is a concave arc shape. The ribs 12 and the ribs 16 are connected by adjusting the column 15 to form a concave arc shape of the ribs 12, thereby tensioning the film electrode surface 4 into a parabola.

[0036] Please see attached Figure 2 and attached Figure 3 The electrode surface uniform tensioning device II includes a pair of movable components 9 in an arched structure, the openings of the pair of movable components 9 in an arched structure are butted against each other, and the movable components 9 in an arched structure include an upper groove 905, a lower groove 904, a film pressure strip 14, a screw 10, a nut 11 and a set screw 13. A positioning opening 902 penetrating the adjustment column 15 and a screw hole 901 penetrating the screw 10 are provided on the upper groove plate of the upper groove 905; a set screw hole 903 penetrating the set screw 13 is provided on the upper groove plate of the lower groove 904, a rib strip 12 is inserted into the bottom surface of the upper groove 905, a film electrode surface 4 is arranged above the lower groove 904, a film pressure strip 14 is padded on the film electrode surface 4, the middle part of the movable component 9 is connected to the rib strip 12 through the positioning opening 902 through the adjustment column 15, so as to realize the preliminary positioning of the film electrode surface 4; the end of the movable component 9 is connected to the rib strip 12 through the screw 10 penetrating the screw hole 901. The screw 10 is placed in the screw hole 901. When the screw 10 is tightened, the nut 11 moves up and is pressed and fixed with the upper end of the upper groove 905. At the same time, the screw 10 moves downward, and the bottom of the screw 10 and the lower end of the upper groove 905 clamp the rib strip 12 to fix the structure.

[0037] When tightening the screw 10, the movable component 9 is pressed and connected with the thin film electrode surface 4 and the thin film pressure strip 14 by the set screw 13 passing through the set screw hole 903, and the rib strip 12 presses the set screw 13. The set screw 13 applies pressure to the thin film pressure strip 14 below. The thin film pressure strip 14 and the lower end of the lower groove 904 clamp the boundary of the thin film electrode surface 4, and evenly apply pressure to the boundary of the thin film electrode surface 4.

[0038] The length of the set screw 13 should be slightly longer than the distance from the top of the film pressure strip 14 to the bottom of the rib strip 12 before installation. The moving assembly 9 is clamped and fixed on the rib strip 12 through the upper groove 905; the rib strip 12, the film electrode surface 4 and the moving assembly 9 form a whole, and the film electrode surface 4 can be evenly tensioned by applying uniform tension to the entire boundary of the film electrode surface 4.

[0039] The movable component 9 is in the shape of a concave arc and fits with the rib strip 12; the boundary of the thin film electrode surface 4 is bonded and pressed against the lower groove 904; a thin film strip 14 is laid above the bonding boundary of the thin film electrode surface 4 to apply uniform pressure to the boundary of the thin film electrode surface 4; the movable component 9 is clamped and fixed on the rib strip 12 through the upper groove 905; the rib strip 12, the thin film electrode surface 4 and the movable component 9 form a whole, and by applying uniform tension to the entire boundary of the thin film electrode surface 4, the thin film electrode surface 4 can be evenly tensioned.

[0040] The screw hole 901 and the set screw hole 903 are circular holes, the positioning opening 902 is a rectangular strip hole, and the adjustment column 15 can move flexibly within a certain range along the positioning opening 902. A plurality of positioning openings 902 are arranged at intervals along the length direction of the slot 905 above the moving component 9.

[0041] The diameter of the screw 10 is the same as the diameter of the screw hole 901, and the length of the screw 10 should be slightly longer than the distance from the top of the moving component 9 to the top of the rib strip 12 before installation.

[0042] The depth of the upper groove 905 should be slightly greater than the sum of the thickness of the nut 11 and the thickness of the rib strip 12. The width of the upper groove 905 should be slightly less than half the width of the rib strip 12 to achieve symmetrical installation and flexible movement of the membrane-moving assembly as a whole within a certain range. The width of the lower groove 904 should be 3 / 4 of the width of the moving assembly 9 to ensure that enough boundaries of the membrane electrode surface 4 are bonded and pressed in the lower groove 904 and to ensure the strength of the moving assembly.

[0043] The width of the film strip 14 should be equal to the width of the groove 904 below to ensure that enough of the boundary of the film electrode surface 4 is clamped. When the antenna is working, applying tension to the film-moving component as a whole can ensure that tension is evenly applied to the entire boundary of the film electrode surface 4, so that the film electrode surface 4 can be evenly tensioned.

[0044] Please see attached Figure 4 The cable-membrane connecting device I includes a sub-buckle 3, a female buckle 6 and a copper tube pressing nose 7. The sub-buckle 3 is placed above the thin film electrode surface 4, and the reflecting surface limiting cable segment 2 passes through the sub-buckle 3 to connect the upper thin film reflecting surface 1; the female buckle 6 is placed below the thin film electrode surface 4, and the transverse cable segment 5 passes through the female buckle 6; the vertical cable segment 8 and the transverse cable segment 5 are sutured and fixed at the designed node to ensure that the vertical cable segment 8 does not slide along the transverse cable segment 5, and after suturing, the sutured part is placed inside the female buckle 6; the copper tube pressing nose 7 clamps the reflecting surface limiting cable segment 2 and the vertical cable segment 8 into a whole, and the clamped copper tube pressing nose 7 is placed below the female buckle 6.

[0045] Please see attached Figure 4 , Figure 5As shown, the sub-buckle 3 includes a sub-buckle boss 302, which is placed above the thin film electrode surface 4 as an upper end limiting device. A sub-buckle rope hole 301 is provided on the sub-buckle boss 302, which allows the reflecting surface limiting rope segment 2 to pass through the sub-buckle rope hole 301 and connect with the thin film reflecting surface 1, thereby realizing the limiting of the thin film reflecting surface 1. The sub-buckle boss 302 ensures that the gap between the thin film reflecting surface 1 and the thin film electrode surface 4 does not exceed the maximum electrostatic force adsorption distance.

[0046] The female buckle 6 is placed below the thin film electrode surface 4. The female buckle 6 is provided with a horizontal female buckle cable hole 601, a longitudinal female buckle through hole 602 and a female buckle step hole 603. The transverse cable segment 5 passes through the female buckle cable hole 601, and the vertical cable segment 8 and the transverse cable segment 5 are sewed together at the designed node. After the sew-up, the sewed part is placed inside the female buckle 6; the diameter of the female buckle step hole 603 is the same as the outer diameter of the copper tube pressing nose 7, and the depth is half of the copper tube pressing nose 7. The copper tube pressing nose 7 is embedded in the female buckle step hole 603. The copper tube pressing nose 7 clamps the reflective surface limiting cable segment 2 and the vertical cable segment 8 into a whole. The clamping length is half of the length of the copper tube pressing nose 7 to ensure sufficient clamping length. Then, the clamped copper tube pressing nose 7 is placed in the female buckle step hole 603 provided below the female buckle 6 to fix the reflective surface limiting cable segment 2 and prevent the female buckle from deflecting under the cable tension.

[0047] The lower end of the sub-buckle 3 is limited by the transverse cable segment 5. By setting the size of the transverse cable tightening cone 36, the thin film electrode surface 4 is limited up and down to ensure that the designed gap is reached between the transverse cable segment 5 and the thin film electrode surface 4.

[0048] A transverse cable tightening cone groove is provided on the sub-buckle 3, and a transverse cable tightening cone 36 is provided on the female buckle 6. When the sub-buckle 3 is installed to form a snap connection with the female buckle 6, the transverse cable tightening cone 36 can clamp the transverse cable segment 5 in the slot hole of the transverse cable tightening cone groove which is smaller than the diameter of the cable segment, thereby realizing the fixation of the transverse cable segment 5 and the sub-buckle and female buckle.

[0049] Please see attached Figure 5 Combination Figure 1-3 As shown, the thin film electrode surface 4 is positioned at a uniform height at the cable net and the rib strip 12, the thin film electrode surface 4 is pasted to the lower end of the lower groove 904, the transverse cable segment 5 is located below the moving component 9, and the gap between the transverse cable segment 5 and the sub-buckle boss 302 is the total material thickness of the lower part of the upper groove 905 in the moving component 9 (including the lower groove 904 and the lower groove wall).

[0050] The advantages of the present invention can be further illustrated by the following experiments:

[0051] 1. Experimental model parameters

[0052] The designed radial rib electrostatically formed thin film reflector antenna has 12 ribs, a thin film electrode surface parameter diameter of 1200mm, an internal solid surface diameter of 250mm, a focal length of 1500mm, a rib strip material of 0.5mm thick spring steel, an adjustment column material of 3mm diameter titanium alloy, a moving component material of 7.5mm thick resin, a cable net material of 0.75mm diameter Kevlar cable, a thin film electrode surface material of 50μm aluminized polyimide film, set screws of M1.6×2 standard parts, and screws of M3×4 standard parts.

[0053] The thin film electrode surface is flattened to obtain the corresponding design size and then cut by laser. The cut thin film electrode surface includes the designed thin film electrode surface and cable net positioning connection holes and the thin film electrode surface and rib strip positioning connection holes. The vertical cable section at the cable membrane connection device is a length-adjustable structure.

[0054] 2. Experimental results

[0055] According to the design parameters, the radial rib film reflector antenna film electrode surface positioning connection and adjustable uniform tensioning device are manufactured, such as Figure 6 As shown, a sample of the designed thin film electrode surface positioning connection and adjustable uniform tensioning device installed on the rib strips and the cable net.

[0056] After the thin film electrode surface is preliminarily installed using the designed positioning points, the thin film electrode surface can be further adjusted within a certain range through the electrode surface uniform tensioning device to make the thin film electrode surface uniformly tensioned and wrinkle-free. Then, the shape of the thin film electrode surface is photographed and measured. According to the fitting results of the photographic measurement, the vertical cable segment is adjusted. The thin film electrode surface wrinkles under the adjustment displacement. Then, the electrode surface uniform tensioning device is adjusted to make the thin film electrode surface uniformly tensioned and wrinkle-free. Figure 7 The figure shows the error distribution diagram of the thin film electrode surface after multiple adjustments, where the arrow length indicates the error value with the fitting parabola, and the arrow direction indicates the error direction with the fitting parabola. The calculated fitting accuracy of the shape surface is 0.8527mm. From the fitting results, the designed radial rib thin film reflector antenna thin film electrode surface positioning connection and adjustable uniform tensioning device can effectively solve the problems of effective positioning, uniform tensioning and adjustment of the thin film electrode surface, so as to solve the stress concentration and wrinkle problems of the thin film electrode surface and ensure the shape accuracy of the thin film electrode surface.

[0057] It should be noted that the installation of the cable-membrane connection device and the electrode surface uniform tensioning device is carried out when the antenna main rib structure is fully unfolded.

[0058] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A reflector antenna thin film electrode surface positioning connection and adjustable tensioning device, characterized in that: include: The electrode surface uniform tensioning device is arranged on the film electrode surface, and is connected to the film electrode surface, the rib strips and the ribs through a movable component in an arched structure, so as to realize the positioning connection between the film electrode surface and the cable net; The cable-membrane connection device clamps the reflective surface limiting cable segment, the vertical cable segment and the transverse cable segment through the male buckle and the female buckle, and is used to position the thin film electrode surface and the rib strip and to adjustably and evenly tension the thin film electrode surface to form an ideal parabola.

2. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 1, characterized in that: The antenna film electrode surface is provided with radial rib strips and ribs, and the electrode surface uniform tensioning device, the rib strips, the film electrode surface and the ribs are connected by an adjusting column.

3. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 1, characterized in that: The electrode surface uniform tensioning device includes a pair of movable components in a bow-shaped structure, and the openings of the pair of movable components in the bow-shaped structure are connected to each other; the movable components are concave arc-shaped, and the rib strips and ribs are connected by adjusting columns to form a concave arc shape, thereby tensioning the film electrode surface into a parabola.

4. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 1, characterized in that: The movable component of the bow-shaped structure includes an upper groove, a lower groove and a film strip, a rib strip is inserted into the bottom surface of the upper groove, a film electrode surface is pasted above the lower groove, a film strip is laid on the bonding boundary of the film electrode surface, the middle part of the movable component is connected to the rib strip by an adjusting column, the end of the movable component is pressed and connected with the rib strip by screws, and the movable component is pressed and connected with the film electrode surface and the film strip by a set screw.

5. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 4, characterized in that: The depth of the upper groove is slightly greater than the sum of the thickness of the nut and the thickness of the rib strip, the width of the upper groove is slightly less than half the width of the rib strip, and the width of the lower groove is 3 / 4 of the width of the moving component.

6. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 1, characterized in that: A plurality of positioning openings are arranged in the middle of the moving component and are arranged at intervals along the length direction of the groove above the moving component. The positioning openings are rectangular strip holes, and the adjusting column can move along the positioning openings.

7. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 1, characterized in that: The cable-membrane connecting device comprises a sub-buckle, a female buckle and a copper tube pressing nose. The sub-buckle is placed above the thin film electrode surface, and the female buckle is placed below the thin film electrode surface. The reflecting surface limiting cable segment passes through the sub-buckle and is connected to the thin film reflecting surface; the vertical cable segment passes through the female buckle, and the transverse cable segment passes through the female buckle to sew the vertical cable segment and the transverse cable segment at the designed node, and the sewed part is placed inside the female buckle; the copper tube pressing nose clamps the reflecting surface limiting cable segment and the vertical cable segment into a whole.

8. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 7, characterized in that: The female buckle is provided with a horizontal female buckle cable hole, a longitudinal female buckle through hole and a female buckle step hole. The transverse cable segment passes through the female buckle cable hole to sew the vertical cable segment and the transverse cable segment at the designed node. The copper tube pressing nose is embedded in the female buckle step hole, and the depth of the female buckle step hole is half of the copper tube pressing nose.

9. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 7, characterized in that: A transverse cable tightening cone groove is provided on the sub-buckle, and a transverse cable tightening cone is provided on the mother buckle. The transverse cable tightening cone clamps the transverse cable segment in the slot hole of the transverse cable tightening cone groove which is smaller than the diameter of the cable segment.

10. The reflector antenna thin film electrode surface positioning connection and adjustable tensioning device according to claim 8, characterized in that: The gap between the transverse cable section and the sub-buckle boss is the thickness of the lower groove at the lower part of the upper groove in the moving component plus the lower groove wall.

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