A space-deployable parabolic antenna back frame based on thick plate origami structure

Abstract

A space-deployable parabolic antenna back frame based on a thick plate origami structure relates to the field of aerospace equipment. Aiming at the problem of low folding and unfolding efficiency of traditional parabolic antennas, the present application introduces origami structure and modular design concepts into the design of a space-deployable parabolic antenna back frame. The deployable antenna back frame is a single-degree-of-freedom thick plate deployable mechanism composed of hinge connections. Different thick plate origami modules are connected and fixed in a given manner, and the drive can achieve stretching and surface deformation. By covering the surface of the antenna back frame with a flexible cable net, the folding and contraction deformation of the entire parabolic antenna back frame can be achieved. The initial shape of the back frame is the minimum shape, which can save the space occupied during launch. After the antenna is launched to the working position in space, the antenna back frame is unfolded by a motor drive to achieve the formation of the surface parabolic cable net, which can effectively improve the folding and unfolding efficiency of the antenna.

Description

Technical Field

[0001] The invention relates to the field of aerospace equipment, and in particular to a space-expandable parabolic antenna back frame based on a thick plate origami structure. Background Art

[0002] At present, the application demand of large folding and unfolding ratio space deployable parabolic antenna in space missions is becoming more and more urgent. The traditional parabolic antenna has low folding and unfolding efficiency and fixed layout, which has become increasingly difficult to meet the needs of performing multiple tasks in current real combat, reconnaissance, observation and other complex environments. Due to the limitations of launch space and payload, the folding and unfolding configuration and manufacturing and assembly mode of the parabolic antenna are key issues to be solved in the design process, which has promoted the development of space deployable parabolic antenna. Origami structures have strong folding and unfolding capabilities and simple manufacturing and assembly processes, which provide novel ideas for the innovative design of many engineering unfolding structures. The modular design based on origami structures has further enhanced the application fields of these deployable structures. Summary of the invention

[0003] The purpose of the present invention is to propose a space-deployable parabolic antenna back frame based on a thick plate origami structure in order to solve the problem of low folding and unfolding efficiency of traditional parabolic antennas.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A space-deployable parabolic antenna back frame based on a thick plate origami structure, comprising a plurality of thick plate origami A modules 3 and a plurality of thick plate origami B modules 4;

[0006] The thick plate origami A module 3 includes a first quadrilateral thick plate unit 5, a second quadrilateral thick plate unit 8, a first triangular thick plate unit 6, a second triangular thick plate unit 7, a third triangular thick plate unit 9 and a fourth triangular thick plate unit 10, wherein the first quadrilateral thick plate unit 5 and the second quadrilateral thick plate unit 8 are trapezoids, and the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9 and the fourth triangular thick plate unit 10 are right triangles;

[0007] One side of the first quadrilateral thick plate unit 5 is hinged to the hypotenuse of the first triangular thick plate unit 6;

[0008] The right-angled side of the first triangular thick plate unit 6 and the right-angled side of the second triangular thick plate unit 7 are hinged;

[0009] The hypotenuse of the second triangular thick plate unit 7 is hinged to one side of the second quadrilateral thick plate unit 8;

[0010] The other side of the second quadrilateral thick plate unit 8 is hinged to the hypotenuse of the third triangular thick plate unit 9;

[0011] The right-angled side of the third triangular thick plate unit 9 is hinged to the right-angled side of the fourth triangular thick plate unit 10;

[0012] The hypotenuse of the fourth triangular thick plate unit 10 is hinged to the other side of the first quadrilateral thick plate unit 5;

[0013] The first quadrilateral thick plate unit 5, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the second quadrilateral thick plate unit 8, the third triangular thick plate unit 9 and the fourth triangular thick plate unit 10 form a closed loop;

[0014] The thick plate origami A module 3 is unfolded into a rectangle;

[0015] When the thick plate origami A module 3 is folded, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9 and the fourth triangular thick plate unit 10 are placed between the first quadrilateral thick plate unit 5 and the second quadrilateral thick plate unit 8;

[0016] The thick plate origami B module 4 includes: a third quadrilateral thick plate unit 11, a fourth quadrilateral thick plate unit 14, a fifth triangular thick plate unit 12, a sixth triangular thick plate unit 13, a seventh triangular thick plate unit 15 and an eighth triangular thick plate unit 16, wherein the third quadrilateral thick plate unit 11 and the fourth quadrilateral thick plate unit 14 are trapezoids, and the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 are right triangles;

[0017] The lower bottom of the third quadrilateral thick plate unit 11 and the lower bottom of the fourth quadrilateral thick plate unit 14 are hinged;

[0018] Two sides of the third quadrilateral thick plate unit 11 are hinged to the hypotenuse of the fifth triangular thick plate unit 12 and the hypotenuse of the sixth triangular thick plate unit 13 respectively;

[0019] Two sides of the fourth quadrilateral thick plate unit 14 are hinged to the hypotenuse of the seventh triangular thick plate unit 15 and the hypotenuse of the eighth triangular thick plate unit 16 respectively;

[0020] The thick plate origami B module 4 is unfolded into a rectangle;

[0021] When the thick plate origami B module 4 is folded, the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 are not placed between the third quadrilateral thick plate unit 11 and the fourth quadrilateral thick plate unit 14;

[0022] When the thick plate origami A module 3 and the thick plate origami B module 4 are folded, the thick plate origami B module 4 is inserted between the first quadrilateral thick plate unit 5 and the second quadrilateral thick plate unit 8;

[0023] The side of the third triangular thick plate unit 9 parallel to the base of the first quadrilateral thick plate unit 5 or the second quadrilateral thick plate unit 8, i.e., side A;

[0024] The side of the fourth triangular thick plate unit 10 parallel to the base of the first quadrilateral thick plate unit 5 or the second quadrilateral thick plate unit 8, i.e., side B;

[0025] The side of the fifth triangular thick plate unit 12 parallel to the base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the C side;

[0026] The side of the sixth triangular thick plate unit 13 parallel to the base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, namely the D side;

[0027] The A side overlaps with the D side, the B side overlaps with the C side, the third triangular thick plate unit 9 and the sixth triangular thick plate unit 13 overlap at a portion fixedly connected, and the fourth triangular thick plate unit 10 and the fifth triangular thick plate unit 12 overlap at a portion fixedly connected;

[0028] The lower bottom of the first quadrilateral thick plate unit 5 in the thick plate origami A module 3 is hinged to the lower bottom of the second quadrilateral thick plate unit 8 in another thick plate origami A module 3;

[0029] The side of the fifth triangular thick plate unit 12 in the thick plate origami B module 4 that is perpendicular to the lower base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the E side;

[0030] The edge of the sixth triangular thick plate unit 13 in the thick plate origami B module 4 that is perpendicular to the lower base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the F edge;

[0031] The side of the seventh triangular thick plate unit 15 in the thick plate origami B module 4 that is perpendicular to the lower base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the G side;

[0032] The side of the eighth triangular thick plate unit 16 in the thick plate origami B module 4 that is perpendicular to the lower base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the H side;

[0033] The E edge of the thick plate origami B module 4 is hinged to the F edge of another thick plate origami B module 4;

[0034] The G edge in the thick plate origami B module 4 is hinged to the H edge in another thick plate origami B module 4 .

[0035] Furthermore, the thickness parameters of the first quadrilateral thick plate unit 5 , the second quadrilateral thick plate unit 8 , the third quadrilateral thick plate unit 11 and the fourth quadrilateral thick plate unit 14 are equal.

[0036] Furthermore, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9, the fourth triangular thick plate unit 10, the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 control the unfolding shape of the antenna back frame by cooperating with each other.

[0037] Furthermore, the antenna back frame is a stepped inclined structure;

[0038] The geometric size parameters of the first quadrilateral thick plate unit 5, the second quadrilateral thick plate unit 8, the third quadrilateral thick plate unit 11, the fourth quadrilateral thick plate unit 14, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9, the fourth triangular thick plate unit 10, the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 change with the position of the row, and the size parameters of the thick plate units in the same row are the same.

[0039] Furthermore, the antenna back frame has a degree of freedom of 1.

[0040] Furthermore, the geometric size parameters of the first quadrilateral thick plate unit 5, the second quadrilateral thick plate unit 8, the third quadrilateral thick plate unit 11, the fourth quadrilateral thick plate unit 14, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9, the fourth triangular thick plate unit 10, the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 are determined according to the curvature of the target parabolic antenna back frame.

[0041] The beneficial effects of the present invention are:

[0042] This application introduces origami structure and modular design concepts into the design of a space-deployable parabolic antenna back frame. The deployable antenna back frame is a single-degree-of-freedom thick plate deployable mechanism connected by hinges. Different thick plate origami modules are connected and fixed in a given manner, and the drive can achieve stretching and surface deformation. By covering the surface of the antenna back frame with a flexible cable net, the folding and contraction deformation of the entire parabolic antenna back frame can be achieved. The initial shape of the back frame is the smallest state of the shape, which can save the space occupied during launch. After the antenna is launched to the working position in space, the antenna back frame is unfolded by motor drive to realize the formation of the surface parabolic cable net, which can effectively improve the folding and unfolding efficiency of the antenna.

[0043] The invention has a simple structure and a large folding area, is suitable for the design of space parabolic antenna back frames of different forms, and has a convenient production and assembly process, is suitable for large-scale production, and has a low manufacturing cost. The invention adopts a modular design, has a simple principle, and is easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of a space-deployable parabolic antenna back frame of a thick plate origami structure;

[0045] Figure 2 The main view of the back frame of the space-deployable parabolic antenna with a thick plate origami structure;

[0046] Figure 3 This is a schematic diagram of thick plate origami module a;

[0047] Figure 4 This is a schematic diagram of the thick plate origami module a;

[0048] Figure 5 This is a schematic diagram of thick plate origami module b;

[0049] Figure 6 This is a schematic diagram of the thick plate origami module b being unfolded;

[0050] Figure 7 It is a schematic diagram of assembling thick plate origami module a and thick plate origami module b;

[0051] Figure 8 It is a schematic diagram of assembling thick plate origami module a and thick plate origami module b;

[0052] Fig. 9 It is a schematic diagram of the coordination state between the stepped slope structure of the thick plate unit and the adjacent thick plate unit;

[0053] Fig.10 This is a schematic diagram of the folded state of the back frame of the space-deployable parabolic antenna with a thick plate origami structure.

[0054] Parabolic cable net (1), thick plate origami structure spatially deployable parabolic antenna back frame (2), thick plate origami module a (3), thick plate origami module b (4), quadrilateral thick plate unit a (5), triangular thick plate unit a (6), triangular thick plate unit b (7), quadrilateral thick plate unit b (8), triangular thick plate unit c (9), triangular thick plate unit d (10), quadrilateral thick plate unit c (11), triangular thick plate unit e (12), triangular thick plate unit f (13), quadrilateral thick plate unit d (14), triangular thick plate unit Plate unit g (15), triangular thick plate unit h (16), assembled triangular thick plate unit a (17), assembled triangular thick plate unit b (18), morphologically controlled quadrilateral thick plate unit (19), morphologically controlled triangular thick plate unit (20), thick plate origami module a-1 (21), thick plate origami module a-2 (22), thick plate origami module a-3 (23), thick plate origami module b-1 (24), thick plate origami module b-2 (25), thick plate origami module b-3 (26), thick plate origami module b-4 (27). DETAILED DESCRIPTION

[0055] It should be particularly noted that, in the absence of conflict, the various embodiments disclosed in this application can be combined with each other.

[0056] Specific implementation method 1: refer to Figure 1 Specifically describing this embodiment, a space-deployable parabolic antenna back frame based on a thick plate origami structure described in this embodiment includes a plurality of thick plate origami A modules 3 and a plurality of thick plate origami B modules 4;

[0057] The thick plate origami A module 3 includes a first quadrilateral thick plate unit 5, a second quadrilateral thick plate unit 8, a first triangular thick plate unit 6, a second triangular thick plate unit 7, a third triangular thick plate unit 9 and a fourth triangular thick plate unit 10, wherein the first quadrilateral thick plate unit 5 and the second quadrilateral thick plate unit 8 are trapezoids, and the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9 and the fourth triangular thick plate unit 10 are right triangles;

[0058] One side of the first quadrilateral thick plate unit 5 is hinged to the hypotenuse of the first triangular thick plate unit 6;

[0059] The right-angled side of the first triangular thick plate unit 6 and the right-angled side of the second triangular thick plate unit 7 are hinged;

[0060] The hypotenuse of the second triangular thick plate unit 7 is hinged to one side of the second quadrilateral thick plate unit 8;

[0061] The other side of the second quadrilateral thick plate unit 8 is hinged to the hypotenuse of the third triangular thick plate unit 9;

[0062] The right-angled side of the third triangular thick plate unit 9 is hinged to the right-angled side of the fourth triangular thick plate unit 10;

[0063] The hypotenuse of the fourth triangular thick plate unit 10 is hinged to the other side of the first quadrilateral thick plate unit 5;

[0064] The first quadrilateral thick plate unit 5, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the second quadrilateral thick plate unit 8, the third triangular thick plate unit 9 and the fourth triangular thick plate unit 10 form a closed loop;

[0065] The thick plate origami A module 3 is unfolded into a rectangle;

[0066] When the thick plate origami A module 3 is folded, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9 and the fourth triangular thick plate unit 10 are placed between the first quadrilateral thick plate unit 5 and the second quadrilateral thick plate unit 8;

[0067] The thick plate origami B module 4 includes: a third quadrilateral thick plate unit 11, a fourth quadrilateral thick plate unit 14, a fifth triangular thick plate unit 12, a sixth triangular thick plate unit 13, a seventh triangular thick plate unit 15 and an eighth triangular thick plate unit 16, wherein the third quadrilateral thick plate unit 11 and the fourth quadrilateral thick plate unit 14 are trapezoids, and the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 are right triangles;

[0068] The lower bottom of the third quadrilateral thick plate unit 11 and the lower bottom of the fourth quadrilateral thick plate unit 14 are hinged;

[0069] Two sides of the third quadrilateral thick plate unit 11 are hinged to the hypotenuse of the fifth triangular thick plate unit 12 and the hypotenuse of the sixth triangular thick plate unit 13 respectively;

[0070] Two sides of the fourth quadrilateral thick plate unit 14 are hinged to the hypotenuse of the seventh triangular thick plate unit 15 and the hypotenuse of the eighth triangular thick plate unit 16 respectively;

[0071] The thick plate origami B module 4 is unfolded into a rectangle;

[0072] When the thick plate origami B module 4 is folded, the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 are not placed between the third quadrilateral thick plate unit 11 and the fourth quadrilateral thick plate unit 14;

[0073] When the thick plate origami A module 3 and the thick plate origami B module 4 are folded, the thick plate origami B module 4 is inserted between the first quadrilateral thick plate unit 5 and the second quadrilateral thick plate unit 8;

[0074] The side of the third triangular thick plate unit 9 parallel to the base of the first quadrilateral thick plate unit 5 or the second quadrilateral thick plate unit 8, i.e., side A;

[0075] The side of the fourth triangular thick plate unit 10 parallel to the base of the first quadrilateral thick plate unit 5 or the second quadrilateral thick plate unit 8, i.e., side B;

[0076] The side of the fifth triangular thick plate unit 12 parallel to the base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the C side;

[0077] The side of the sixth triangular thick plate unit 13 parallel to the base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, namely the D side;

[0078] The A side overlaps with the D side, the B side overlaps with the C side, the third triangular thick plate unit 9 and the sixth triangular thick plate unit 13 overlap at a portion fixedly connected, and the fourth triangular thick plate unit 10 and the fifth triangular thick plate unit 12 overlap at a portion fixedly connected;

[0079] The lower bottom of the first quadrilateral thick plate unit 5 in the thick plate origami A module 3 is hinged to the lower bottom of the second quadrilateral thick plate unit 8 in another thick plate origami A module 3;

[0080] The side of the fifth triangular thick plate unit 12 in the thick plate origami B module 4 that is perpendicular to the lower base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the E side;

[0081] The edge of the sixth triangular thick plate unit 13 in the thick plate origami B module 4 that is perpendicular to the lower base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the F edge;

[0082] The side of the seventh triangular thick plate unit 15 in the thick plate origami B module 4 that is perpendicular to the lower base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the G side;

[0083] The side of the eighth triangular thick plate unit 16 in the thick plate origami B module 4 that is perpendicular to the lower base of the third quadrilateral thick plate unit 11 or the fourth quadrilateral thick plate unit 14, i.e., the H side;

[0084] The E edge of the thick plate origami B module 4 is hinged to the F edge of another thick plate origami B module 4;

[0085] The G edge in the thick plate origami B module 4 is hinged to the H edge in another thick plate origami B module 4 .

[0086] See also Figure 1-7 The present embodiment is described as a spatially deployable parabolic antenna back frame of a thick plate origami structure, which comprises a thick plate origami module a, a thick plate origami module b and a flexible parabolic cable net. The thick plate origami module a and the thick plate origami module b are assembled in series, and the flexible parabolic cable net is arranged on the surface of the thick plate origami structure. The thick plate origami modules can be folded and unfolded, and the entire antenna back frame is driven to unfold and fold through series linkage, thereby realizing the stretching and curved surface deformation of the parabolic cable net.

[0087] Specific implementation method 2: This implementation method is a further explanation of specific implementation method 1. The difference between this implementation method and specific implementation method 1 is that the thickness parameters of the first quadrilateral thick plate unit 5, the second quadrilateral thick plate unit 8, the third quadrilateral thick plate unit 11 and the fourth quadrilateral thick plate unit 14 are equal.

[0088] Specific implementation method three: This implementation method is a further explanation of specific implementation method one. The difference between this implementation method and specific implementation method one is that the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9, the fourth triangular thick plate unit 10, the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 control the unfolding shape of the antenna back frame by cooperating with each other.

[0089] Specific implementation mode 4: This implementation mode is a further description of the specific implementation mode 1. The difference between this implementation mode and the specific implementation mode 1 is that the antenna back frame is a stepped inclined surface structure;

[0090] The geometric size parameters of the first quadrilateral thick plate unit 5, the second quadrilateral thick plate unit 8, the third quadrilateral thick plate unit 11, the fourth quadrilateral thick plate unit 14, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9, the fourth triangular thick plate unit 10, the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 change with the position of the row, and the size parameters of the thick plate units in the same row are the same.

[0091] Specific implementation mode five: This implementation mode is a further description of specific implementation mode one. The difference between this implementation mode and specific implementation mode one is that the degree of freedom of the antenna back frame is 1.

[0092] Specific embodiment six: This embodiment is a further explanation of specific embodiment one. The difference between this embodiment and specific embodiment one is that the geometric size parameters of the first quadrilateral thick plate unit 5, the second quadrilateral thick plate unit 8, the third quadrilateral thick plate unit 11, the fourth quadrilateral thick plate unit 14, the first triangular thick plate unit 6, the second triangular thick plate unit 7, the third triangular thick plate unit 9, the fourth triangular thick plate unit 10, the fifth triangular thick plate unit 12, the sixth triangular thick plate unit 13, the seventh triangular thick plate unit 15 and the eighth triangular thick plate unit 16 are determined according to the curvature of the target parabolic antenna back frame.

[0093] It includes a thick plate origami module a, a thick plate origami module b and a parabolic cable net. The thick plate origami module a and the thick plate origami module b are assembled in series. The parabolic cable net is arranged on the surface of the thick plate origami structure. The thick plate origami modules can be folded and unfolded. The entire antenna back frame is driven to unfold and fold through series linkage to achieve the stretching and curved surface deformation of the parabolic cable net. The thick plate origami module a includes 2 quadrilateral thick plate units and 4 triangular thick plate units. The quadrilateral thick plate units have the same geometric dimensions, and the triangular thick plate units have geometric dimensions corresponding to the quadrilateral unit dimensions. The thick plate units are hinged in sequence to form a closed loop. The hinge positions of the triangular thick plate units are located on both sides of the unit plate surface, and the hinge positions of the quadrilateral thick plate units are located on one side of the plate surface. No hinges are placed between the quadrilateral thick plate units. The upper surface of the thick plate origami module a is in a flat state after it is fully unfolded. The thick plate origami module b includes 2 quadrilateral thick plate units and 4 triangular thick plate units. The geometric dimensions of the quadrilateral thick plate units are the same, and the geometric dimensions of the triangular thick plate units correspond to the dimensions of the quadrilateral units. The triangular thick plate units are hinged to the quadrilateral thick plate units, and the quadrilateral thick plate units are hinged to each other. The hinge positions are located on both sides of the unit plate surface. The upper surface of the thick plate origami module b is in a flat state after it is fully unfolded. The thick plate origami module a and the thick plate origami module b are assembled in series, and the thick plate units at corresponding positions are glued and fixed. The lengths of the overlapping edges are equal, and the corresponding angles are equal. The thick plate units that are assembled and glued and fixed to each other have the same structural form, the assembly surfaces completely overlap, and the thickness difference between the panels is equal to the thickness parameter of the quadrilateral thick plate unit. The thick plate unit cooperates with the adjacent thick plate unit through a stepped slope structure to control the unfolding form of the antenna back frame. The spatially deployable parabolic antenna back frame of the thick plate origami structure can be completely folded. The geometrical dimension parameters of the thick plate origami module vary with the position of the row, and the dimension parameters of the module units in the same row are the same. The degree of freedom of the spatially deployable parabolic antenna back frame of the thick plate origami structure is 1.

[0094] Example:

[0095] The thick plate origami module a-3 of this embodiment includes a quadrilateral thick plate unit a-5, a quadrilateral thick plate unit b-8 and four triangular thick plate units a-6, a triangular thick plate unit b-7, a triangular thick plate unit c-9 and a triangular thick plate unit d-10. The quadrilateral thick plate unit a-5 is hinged to the triangular thick plate unit a-6, the triangular thick plate unit a-6 is hinged to the triangular thick plate unit b-7, the triangular thick plate unit b-7 is hinged to the quadrilateral thick plate unit b-8, the quadrilateral thick plate unit b-8 is hinged to the triangular thick plate unit c-9, the triangular thick plate unit c-9 is hinged to the triangular thick plate unit d-10, and the triangular thick plate unit d-10 is hinged to the quadrilateral thick plate unit a-5 to form a closed loop. The hinge positions of the triangular thick plate units are located on both sides of the plate surface, and the hinge positions of the quadrilateral thick plate units are located on one side of the plate surface. The quadrilateral thick plate unit a-5 and the quadrilateral thick plate unit b-8 have the same geometric dimensions. The structural forms of the triangular thick plate unit a-6 and the triangular thick plate unit b-7 are symmetrical. The structural forms of the triangular thick plate unit c-9 and the triangular thick plate unit d-10 are symmetrical. The degree of freedom of the thick plate origami module a-3 is 1, and the upper surface is a plane after unfolding.

[0096] The thick plate origami module b-4 includes a quadrilateral thick plate unit c-11, a quadrilateral thick plate unit d-14 and four triangular thick plate units e-12, a triangular thick plate unit f-13, a triangular thick plate unit g-15 and a triangular thick plate unit h-16. The quadrilateral thick plate unit c-11 is hinged to the triangular thick plate unit e-12, the triangular thick plate unit f-13 is hinged to the quadrilateral thick plate unit d-14, the triangular thick plate unit g-15 is hinged to the quadrilateral thick plate unit d-14, the triangular thick plate unit h-16 is hinged to the quadrilateral thick plate unit c-11, and the quadrilateral thick plate unit c-11 is hinged to the quadrilateral thick plate unit d-14. The hinge position of the triangular thick plate unit is located on one side of the plate surface, and the hinge position of the quadrilateral thick plate unit is located on both sides of the plate surface. The quadrilateral thick plate unit c-11 and the quadrilateral thick plate unit d-14 have the same geometric dimensions. The triangular thick plate unit e-12 and the triangular thick plate unit f-13 have symmetrical structures. The triangular thick plate unit g-15 and the triangular thick plate unit h-16 have symmetrical structures. The upper surface of the thick plate origami module b-2 is a plane after unfolding.

[0097] The thick plate origami module a-3 and the thick plate origami module b-4 are assembled in series, the triangular thick plate unit d-10 is bonded and fixed with the triangular thick plate unit e-12, the length of the overlapping edges is equal, and the corresponding angles are equal, the triangular thick plate unit c-9 is bonded and fixed with the triangular thick plate unit f-13, the length of the overlapping edges is equal, and the corresponding angles are equal. The triangular thick plate units after bonding and fixing have the same movement form, and can drive the quadrilateral thick plate units to move in series. The morphologically controlled triangular thick plate unit-20 cooperates with the morphologically controlled quadrilateral thick plate unit-19 to control the unfolding state of the antenna back frame, and implements limit braking after unfolding into place.

[0098] In this embodiment, there are 9 thick plate origami modules a in total, which are arranged in 3 rows, with 3 modules in each row; there are 6 thick plate origami modules b in total, which are arranged in 2 rows, with 3 modules in each row; there are 6 half thick plate origami modules b in total, which are arranged in 2 rows at the ends of both sides, with 3 modules in each row; the geometric size parameters of the thick plate origami modules vary with the position sequence number of the row, and the size parameters of the thick plate module units in the same row are the same, and the thick plate origami modules a are divided into 3 categories, namely, thick plate origami modules a-1, thick plate origami modules a-2, and thick plate origami modules a-3, and the thick plate origami modules a are divided into 4 categories, namely, thick plate origami modules b-1, thick plate origami modules b-2, thick plate origami modules b-3, and thick plate origami modules b-4. The geometric parameters of the thick plate origami modules can be designed according to the curvature of the target parabolic antenna back frame, and a modular design is adopted. The larger the area of ​​the back frame, the more thick plate origami module units there are.

[0099] The parabolic flexible surface cable net is set on the surface of the thick plate origami structure back frame. The thick plate origami module back frame drives the entire antenna back frame to expand and retract through series linkage, thereby realizing the stretching and curved surface deformation of the parabolic cable net.

[0100] Here’s how it works:

[0101] Assume that the working state and folded state of the thick plate origami space deployable parabolic antenna back frame are as follows: Figure 1 and Figure 7As shown, the antenna back frame is initially in a folded state, at which time the quadrilateral thick plate units in the thick plate origami module a and the thick plate origami module b are in a parallel adjacent state, and the triangular thick plate units are folded and folded between the quadrilateral thick plate units. When the antenna back frame is unfolded from the folded state to the working state, the quadrilateral thick plate units on the left and right sides of the thick plate origami module a-1 in the middle row position move outward, thereby driving the other thick plate origami modules in the middle row to stretch outward. Since the triangular thick plate units in the thick plate origami module b-1 hinged on one side of the middle row change position with the movement of the middle row module, the other thick plate units in the row where the b-1 module is located are driven to move, and then the thick plate origami modules in this row are driven to stretch outward. The movement process of the thick plate origami module b-2 on the other side of the middle row is consistent with the movement mode of the b-1 module, so the extension of the origami module can also be achieved by changing the row. The triangular thick plate unit in the row where the thick plate origami module a-2 is located will change position with the unfolding movement of the thick plate origami module b-1, thereby driving the movement of other thick plate units in the row where the a-2 module is located, and all a-2 thick plate origami modules will produce outward extension movement, and the movement of the a-2 thick plate origami module will drive the outward expansion of the thick plate origami module b-3. The a-3 thick plate origami module and the b-4 thick plate origami module on the other side correspond to the movement principles of the a-2 thick plate origami module and the b-3 thick plate origami module respectively, so that all the thick plate origami modules of the entire antenna back frame will have outward extension movement, realizing the unfolding of the entire antenna back frame. When the morphology-controlled quadrilateral thick plate unit contacts the stepped inclined structure of the morphology-controlled triangular thick plate unit, the movement of the corresponding thick plate origami module will stop, and thus the unfolding movement of the entire antenna back frame will also stop, realizing the stretching and curved surface deformation of the parabolic cable net.

[0102] It should be noted that the specific implementation is only an explanation and description of the technical solution of the present invention, and cannot be used to limit the scope of protection of the rights. Any partial changes made according to the claims and description of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A space-deployable parabolic antenna back frame based on a thick plate origami structure, characterized in that It comprises a plurality of thick plate origami A modules (3) and a plurality of thick plate origami B modules (4); The thick plate origami A module (3) comprises a first quadrilateral thick plate unit (5), a second quadrilateral thick plate unit (8), a first triangular thick plate unit (6), a second triangular thick plate unit (7), a third triangular thick plate unit (9) and a fourth triangular thick plate unit (10), wherein the first quadrilateral thick plate unit (5) and the second quadrilateral thick plate unit (8) are trapezoids, and the first triangular thick plate unit (6), the second triangular thick plate unit (7), the third triangular thick plate unit (9) and the fourth triangular thick plate unit (10) are right triangles; One side of the first quadrilateral thick plate unit (5) is hinged to the hypotenuse of the first triangular thick plate unit (6); The right-angled side of the first triangular thick plate unit (6) and the right-angled side of the second triangular thick plate unit (7) are hinged; The hypotenuse of the second triangular thick plate unit (7) is hinged to one side of the second quadrilateral thick plate unit (8); Another side of the second quadrilateral thick plate unit (8) is hinged to the hypotenuse of the third triangular thick plate unit (9); The right-angled side of the third triangular thick plate unit (9) and the right-angled side of the fourth triangular thick plate unit (10) are hinged; The hypotenuse of the fourth triangular thick plate unit (10) is hinged to the other side of the first quadrilateral thick plate unit (5); The first quadrilateral thick plate unit (5), the first triangular thick plate unit (6), the second triangular thick plate unit (7), the second quadrilateral thick plate unit (8), the third triangular thick plate unit (9) and the fourth triangular thick plate unit (10) form a closed loop; The thick plate origami A module (3) is unfolded into a rectangle; When the thick plate origami A module (3) is folded, the first triangular thick plate unit (6), the second triangular thick plate unit (7), the third triangular thick plate unit (9) and the fourth triangular thick plate unit (10) are placed between the first quadrilateral thick plate unit (5) and the second quadrilateral thick plate unit (8); The thick plate origami B module (4) comprises: a third quadrilateral thick plate unit (11), a fourth quadrilateral thick plate unit (14), a fifth triangular thick plate unit (12), a sixth triangular thick plate unit (13), a seventh triangular thick plate unit (15) and an eighth triangular thick plate unit (16); the third quadrilateral thick plate unit (11) and the fourth quadrilateral thick plate unit (14) are trapezoids, and the fifth triangular thick plate unit (12), the sixth triangular thick plate unit (13), the seventh triangular thick plate unit (15) and the eighth triangular thick plate unit (16) are right triangles; The lower base of the third quadrilateral thick plate unit (11) and the lower base of the fourth quadrilateral thick plate unit (14) are hinged; Two sides of the third quadrilateral thick plate unit (11) are respectively hinged to the hypotenuse of the fifth triangular thick plate unit (12) and the hypotenuse of the sixth triangular thick plate unit (13); Two sides of the fourth quadrilateral thick plate unit (14) are respectively hinged to the hypotenuse of the seventh triangular thick plate unit (15) and the hypotenuse of the eighth triangular thick plate unit (16); The thick plate origami B module (4) is unfolded into a rectangle; When the thick plate origami B module (4) is folded, the fifth triangular thick plate unit (12), the sixth triangular thick plate unit (13), the seventh triangular thick plate unit (15) and the eighth triangular thick plate unit (16) are not placed between the third quadrilateral thick plate unit (11) and the fourth quadrilateral thick plate unit (14); When the thick plate origami A module (3) and the thick plate origami B module (4) are folded, the thick plate origami B module (4) is inserted between the first quadrilateral thick plate unit (5) and the second quadrilateral thick plate unit (8); The side of the third triangular thick plate unit (9) parallel to the base of the first quadrilateral thick plate unit (5) or the second quadrilateral thick plate unit (8), namely, the A side; The side of the fourth triangular thick plate unit (10) parallel to the base of the first quadrilateral thick plate unit (5) or the second quadrilateral thick plate unit (8), namely, the B side; The side of the fifth triangular thick plate unit (12) parallel to the base side of the third quadrilateral thick plate unit (11) or the fourth quadrilateral thick plate unit (14), namely the C side; The side of the sixth triangular thick plate unit (13) parallel to the base of the third quadrilateral thick plate unit (11) or the fourth quadrilateral thick plate unit (14), namely the D side; The A side overlaps with the D side, the B side overlaps with the C side, the overlapped portion of the third triangular thick plate unit (9) and the sixth triangular thick plate unit (13) is fixedly connected, and the overlapped portion of the fourth triangular thick plate unit (10) and the fifth triangular thick plate unit (12) is fixedly connected; The lower base of the first quadrilateral thick plate unit (5) in the thick plate origami A module (3) is hinged to the lower base of the second quadrilateral thick plate unit (8) in another thick plate origami A module (3); The side of the fifth triangular thick plate unit (12) in the thick plate origami B module (4) that is perpendicular to the lower base of the third quadrilateral thick plate unit (11) or the fourth quadrilateral thick plate unit (14), i.e., the E side; The edge of the sixth triangular thick plate unit (13) in the thick plate origami B module (4) that is perpendicular to the lower base of the third quadrilateral thick plate unit (11) or the fourth quadrilateral thick plate unit (14), i.e., the F edge; The side of the seventh triangular thick plate unit (15) in the thick plate origami B module (4) that is perpendicular to the lower base of the third quadrilateral thick plate unit (11) or the fourth quadrilateral thick plate unit (14), i.e., the G side; The side of the eighth triangular thick plate unit (16) in the thick plate origami B module (4) that is perpendicular to the lower base of the third quadrilateral thick plate unit (11) or the fourth quadrilateral thick plate unit (14), i.e., the H side; The E edge of the thick plate origami B module (4) is hinged to the F edge of another thick plate origami B module (4); The G edge in the thick plate origami B module (4) is hinged to the H edge in another thick plate origami B module (4).

2. The space-deployable parabolic antenna back frame based on thick plate origami structure according to claim 1, characterized in that The thickness parameters of the first quadrilateral thick plate unit (5), the second quadrilateral thick plate unit (8), the third quadrilateral thick plate unit (11) and the fourth quadrilateral thick plate unit (14) are equal.

3. The spatially deployable parabolic antenna back frame based on a thick plate origami structure according to claim 1, characterized in that The first triangular thick plate unit (6), the second triangular thick plate unit (7), the third triangular thick plate unit (9), the fourth triangular thick plate unit (10), the fifth triangular thick plate unit (12), the sixth triangular thick plate unit (13), the seventh triangular thick plate unit (15) and the eighth triangular thick plate unit (16) control the unfolding shape of the antenna back frame by cooperating with each other.

4. The spatially deployable parabolic antenna back frame based on a thick plate origami structure according to claim 1, characterized in that The antenna back frame is a stepped inclined structure; The geometric size parameters of the first quadrilateral thick plate unit (5), the second quadrilateral thick plate unit (8), the third quadrilateral thick plate unit (11), the fourth quadrilateral thick plate unit (14), the first triangular thick plate unit (6), the second triangular thick plate unit (7), the third triangular thick plate unit (9), the fourth triangular thick plate unit (10), the fifth triangular thick plate unit (12), the sixth triangular thick plate unit (13), the seventh triangular thick plate unit (15) and the eighth triangular thick plate unit (16) change with the position of the row, and the size parameters of the thick plate units in the same row are the same.

5. The spatially deployable parabolic antenna back frame based on a thick plate origami structure according to claim 1, characterized in that The antenna back frame has a degree of freedom of 1.

6. The spatially deployable parabolic antenna back frame based on a thick plate origami structure according to claim 1, characterized in that The geometrical dimension parameters of the first quadrilateral thick plate unit (5), the second quadrilateral thick plate unit (8), the third quadrilateral thick plate unit (11), the fourth quadrilateral thick plate unit (14), the first triangular thick plate unit (6), the second triangular thick plate unit (7), the third triangular thick plate unit (9), the fourth triangular thick plate unit (10), the fifth triangular thick plate unit (12), the sixth triangular thick plate unit (13), the seventh triangular thick plate unit (15) and the eighth triangular thick plate unit (16) are determined according to the curvature of the target parabolic antenna back frame.

Images