Modularized large-scale two-dimensional plane folding and unfolding mechanism and use method

Abstract

The invention relates to the technical field of folding structures, in particular to a modular large two-dimensional plane folding and unfolding mechanism which comprises antenna panel units, panel folding and unfolding assemblies, panel folding and unfolding linkage assemblies and panel folding and unfolding power assemblies, the multiple antenna panel units are transversely arranged at intervals, the panel folding and unfolding assemblies are arranged on the surfaces of the antenna panel units, and the panel folding and unfolding linkage assemblies are arranged on the surfaces of the panel folding and unfolding assemblies. The antenna panel units are driven by the panel folding and unfolding assemblies, the panel folding and unfolding linkage assemblies are connected between the two adjacent panel folding and unfolding assemblies, the two adjacent panel folding and unfolding assemblies conduct linkage folding and unfolding through the panel folding and unfolding linkage assemblies, and the panel folding and unfolding power assemblies are arranged on the surface of the satellite body. The other end of the panel folding and unfolding power assembly is connected with the panel folding and unfolding assembly close to the side edge of a satellite, the antenna panel unit has a large folding and unfolding ratio, the space of a rocket fairing is fully utilized, high-efficiency two-dimensional folding and unfolding of the large-size panel satellite antenna are achieved, only one-time movement is needed in the unfolding process, the folding rate is large, and the unfolding state rigidity is large.

Description

Technical Field

[0001] The present invention relates to the technical field of folding structures, and in particular to a modular large-scale two-dimensional plane folding and unfolding mechanism and a use method thereof. Background Art

[0002] With the steady progress of aerospace projects such as manned space flight and artificial satellites, deployable structures have been widely used in satellite antennas, modular space telescopes and solar wings. Faced with complex aerospace missions, the demand for large, high-rigidity and high-stability space deployable structures is becoming more and more urgent.

[0003] There are various structural forms and deployment principles of space deployable antennas. Planar array deployable antennas can be divided into one-dimensional linear folding and deploying structures, two-dimensional planar folding and deploying structures and three-dimensional space folding and deploying structures according to different deployment dimensions. In recent years, various aerospace powers have begun to develop two-dimensional folding and deploying mechanisms for flat-panel satellite antennas, but the existing schemes are all in the conceptual design stage and there is no mature technical solution. Therefore, a modular large-scale two-dimensional planar folding and deploying mechanism and its use method are proposed. Summary of the invention

[0004] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a modular large-scale two-dimensional plane folding and unfolding mechanism and a use method thereof.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a modular large-scale two-dimensional plane folding and unfolding mechanism, comprising an antenna panel unit, a panel folding and unfolding assembly, a panel folding and unfolding linkage assembly and a panel folding and unfolding power assembly;

[0006] A plurality of groups of antenna panel units are arranged in a transversely spaced manner;

[0007] The panel retractable assembly is arranged on the surface of the antenna panel unit, and the antenna panel unit is driven by the panel retractable assembly;

[0008] The panel retracting and extending linkage component is connected between two adjacent groups of panel retracting and extending components, and the two adjacent groups of panel retracting and extending components are retracted and extended in a linkage manner through the panel retracting and extending linkage component;

[0009] The panel retracting and extending power assembly is arranged on the surface of the satellite body, and the other end of the panel retracting and extending power assembly is connected to the panel retracting and extending assembly close to the side of the satellite.

[0010] Preferably, the antenna panel unit includes two groups of antenna panels A, two groups of antenna panels B and four groups of antenna panels C. The two groups of antenna panels A and the two groups of antenna panels B are cross-arranged to form an antenna panel body. The edges of the antenna panels A and the edges of adjacent antenna panels B are connected by self-locking hinges. Each group of antenna panels A can be rotated relative to the adjacent antenna panels B by self-locking hinges. A connecting notch is formed at the connection between each group of antenna panels A and antenna panels B. The antenna panel C group is arranged in the connecting notch, and the edges on both sides of the antenna panel C group are connected to the edges of adjacent antenna panels A and antenna panels B by self-locking hinges.

[0011] Preferably, the antenna panel group B is composed of two groups of symmetrically arranged antenna panels B, which are connected by a self-locking hinge, and a driving component A is provided at the end of the self-locking hinge connecting the two groups of antenna panels B; the antenna panel group C is composed of two groups of symmetrically arranged antenna panels C, which are connected by a self-locking hinge, the self-locking hinge between the two groups of antenna panels C and the self-locking hinge between the two groups of antenna panels B are on the front side of the antenna panel C, the antenna panel C is connected to the adjacent antenna panel B and antenna panel A through a self-locking hinge, and the self-locking hinge connecting the antenna panel C to the antenna panel B and the antenna panel A is on the back side of the antenna panel C.

[0012] Preferably, the panel folding and unfolding assembly includes an umbrella-type transmission seat, two groups of long struts, two groups of folding strut groups and two groups of panel struts. The umbrella-type transmission seat is located above the center position of the antenna panel unit. The umbrella-type transmission seat includes an umbrella seat and a two-way transmission rod group. The two-way transmission rod group is arranged at the center position of the umbrella seat. The two groups of long struts are respectively installed on the outside of the two ends of the umbrella seat through rotating shafts. The two ends of the two-way transmission rod group are respectively connected to the two groups of long struts, and the two groups of long struts move synchronously under the linkage of the two-way transmission rod group. The two groups of folding strut groups are respectively installed on the inside of the two ends of the umbrella seat through rotating shafts. The panel struts are arranged between the long struts on one side of the umbrella-type transmission seat and the end of the folding strut group. The two groups of panel struts are respectively fixed on the surfaces of the two groups of antenna panels A.

[0013] Preferably, the panel support rods in the panel folding and unfolding assembly adjacent to the satellite body are connected to the bottom of the satellite body via a rotating shaft, and the ends of the panel support rods between two adjacent groups of panel folding and unfolding assemblies are connected via a rotating shaft.

[0014] Preferably, the folding strut group includes a folding strut A and a folding strut B, one end of the folding strut A is connected to the end of the long strut, one end of the folding strut B is connected to the other end of the folding strut A through a self-locking hinge, and the other end of the folding strut B is connected to the panel strut.

[0015] Preferably, the panel retraction and extension linkage assembly is arranged between two adjacent groups of umbrella-type transmission seats, and the panel retraction and extension linkage assembly includes a long linkage rod and a short linkage rod. The two groups of long linkage rods are cross-connected through a rotating shaft with the center as the connection point, and both ends of the two groups of long linkage rods are connected with a group of short linkage rods through a rotating shaft, and the ends of the two groups of short linkage rods located on the same side of the two groups of long linkage rods are connected through a rotating shaft, and the ends of the two groups of short linkage rods are connected to form a connection point, and the panel retraction and extension linkage assembly is connected to the two adjacent groups of umbrella-type transmission seats through the rotating shaft, and a spiral spring for providing rotational power is installed outside each group of rotating shafts, and the long linkage rod and the short linkage rod are both driven by the spiral spring.

[0016] Preferably, the panel retraction and extension power assembly includes a long limit rod, a short limit rod and a connecting seat, one end of the long limit rod is connected to the adjacent side umbrella-type transmission seat of the satellite body through a rotating shaft, the short limit rod is connected to one end of the long limit rod through a self-locking hinge, the connecting seat is connected to the other end of the short limit rod through a rotating shaft, and the connecting seat is fixed to the surface of the satellite body.

[0017] Preferably, the panel retracting and extending power assembly further comprises a driving assembly B, the driving assembly B is arranged at the end of the connection between the panel support rod and the satellite body, the output end of the driving assembly B is connected to the panel support rod, and the panel support rod is driven by the driving assembly B;

[0018] The method for using the modular large-scale two-dimensional plane folding and unfolding mechanism comprises the following steps:

[0019] Step S1, the external locking structure releases the position restriction on the antenna panel unit, the panel retracting and extending assembly, the panel retracting and extending linkage assembly and the panel retracting and extending power assembly;

[0020] Step S2, performing an unfolding operation, the panel support rod is driven by the driving component B, the driving component B drives the panel support rod to rotate, and the rotation of the panel support rod drives the umbrella-type transmission seat and the long support rod to rotate synchronously to perform the unfolding operation;

[0021] Step S3, the driving component B drives the panel support rod to rotate, and the rotation of the panel support rod drives the umbrella-type transmission seat and the long support rod to rotate synchronously. The rotation of the umbrella-type transmission seat pulls one end of the long limit rod, and the other end of the long limit rod pulls the short limit rod during the movement. The short limit rod rotates relative to the long limit rod and the connecting seat at the same time. When the short limit rod and the long limit rod are horizontal, they reach a fully deployed state. At this time, the self-locking hinge at the connection between the short limit rod and the long limit rod is locked, and the umbrella-type transmission seat and the long support rod are pulled by the long limit rod and the short limit rod to change from tilted to parallel and then keep their positions fixed;

[0022] Step S4, the panel support rod continues to rotate until it is horizontal, and the folding support rod A and the folding support rod B are pulled by the panel support rod to unfold from the folded state. After the panel support rod rotates to the horizontal state, the folding support rod A and the folding support rod B are turned from the folded state to the fully unfolded state and locked. At this time, the long support rod, the folding support rod group and the panel support rod cooperate to form a stable triangular support structure, the umbrella-type transmission seat, the long support rod, the folding support rod group and the panel support rod all arrive at the specified position, and the antenna panel A set on the surface of the panel support rod is synchronized to the horizontal state with the rotation of the panel support rod;

[0023] Step S5, while step S is being performed, the driving component A works to drive the self-locking hinge to rotate and separate, and the two groups of antenna panels B are turned from a closed state to an open state under the drive of the self-locking hinge. The unfolding process of antenna panel B and antenna panel A drives antenna panel C to unfold with it, and the two groups of antenna panels C and the two groups of antenna panels B are both bent outward and unfolded. When the position of antenna panel A is maintained fixed, the antenna panel group B and the antenna panel group C connected to antenna panel A synchronously maintain the stability of the unfolded state, and the umbrella-type transmission seat, the long support rod, the folding support rod group and the panel support rod cooperate with each other to play a supporting role for antenna panel A, antenna panel group B and antenna panel group C;

[0024] Step S3, while step S1 is being carried out, as the umbrella-type transmission seat moves laterally, the rotating shaft connecting each group of long linkage rods and short linkage rods is driven by the spiral spring to unfold, and under the pushing action of the spiral spring, the long linkage rod and the short linkage rod push the two adjacent groups of umbrella-type transmission seats to unfold synchronously, and as the adjacent umbrella-type transmission seats move, another group of panel retraction and extension components unfolds.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The antenna panel unit of the present invention has a large folding and unfolding ratio, fully utilizes the space of the rocket fairing, realizes the high-efficiency two-dimensional folding and unfolding of a large-sized flat-panel satellite antenna, and has a simple unfolding principle and high reliability. The unfolding process only requires one movement, has a large folding rate, and has a large unfolded state stiffness;

[0027] 2. When the antenna panel units of the present invention are in a fully expanded state, all antenna panel units are in the same plane, the working surface of the antenna panel units is flush with the front of the satellite, and any two adjacent panels are hingedly connected to improve the overall rigidity of the mechanism.

[0028] 4. The present invention realizes modular expansion of this type of structure, can realize modular production, and reduces manufacturing cost and difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the panel retractable and unfoldable assembly of the present invention;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the panel retracting and extending linkage assembly of the present invention;

[0033] Figure 5 This is a schematic diagram of the panel retraction and extension power assembly of the present invention;

[0034] Figure 6 It is a schematic diagram of the back structure of the antenna panel unit of the present invention;

[0035] Figure 7 It is a schematic diagram of the antenna panel unit of the present invention and the panel retractable assembly in a retracted state;

[0036] Figure 8 It is a schematic diagram of the antenna panel unit of the present invention in an unfolded state in cooperation with the panel folding and unfolding assembly;

[0037] Fig. 9 A schematic diagram of a folding method of an antenna panel unit of the present invention;

[0038] Fig.10 It is a schematic diagram of the overall structure of the present invention in a completely folded state;

[0039] Fig.11 The overall structure of the present invention is shown in a semi-expanded state. Figure 1 ;

[0040] Fig.12 The overall structure of the present invention is shown in a semi-expanded state. Figure 2 .

[0041] The numbers in the figure represent:

[0042] 1. Antenna panel unit; 11. Antenna panel A; 12. Antenna panel B group; 121. Antenna panel B; 122. Drive assembly A; 13. Antenna panel C group; 131. Antenna panel C; 2. Panel folding and extension assembly; 21. Umbrella transmission seat; 211. Umbrella seat; 212. Two-way transmission rod group; 22. Long support rod; 23. Folding support rod group; 231. Folding support rod A; 232. Folding support rod B; 24. Panel support rod; 3. Panel folding and extension linkage assembly; 31. Long linkage rod; 32. Short linkage rod; 4. Panel folding and extension power assembly; 41. Long limit rod; 42. Short limit rod; 43. Connecting seat; 44. Drive assembly B. DETAILED DESCRIPTION

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0044] Example:

[0045] like Figure 1-Figure 12 As shown, the present invention provides a modular large-scale two-dimensional plane folding and unfolding mechanism, including an antenna panel unit 1, a panel folding and unfolding assembly 2, a panel folding and unfolding linkage assembly 3 and a panel folding and unfolding power assembly 4;

[0046] A plurality of groups of antenna panel units 1 are arranged in a horizontally spaced manner;

[0047] The panel retractable assembly 2 is arranged on the surface of the antenna panel unit 1, and the antenna panel unit 1 is driven by the panel retractable assembly 2;

[0048] The panel retracting and extending linkage component 3 is connected between two adjacent groups of panel retracting and extending components 2, and the two adjacent groups of panel retracting and extending components 2 are retracted and extended in a linkage manner through the panel retracting and extending linkage component 3;

[0049] The panel retracting and extending power assembly 4 is arranged on the surface of the satellite body, and the other end of the panel retracting and extending power assembly 4 is connected to the panel retracting and extending assembly 2 close to the side of the satellite.

[0050] The antenna panel unit 1 includes two groups of antenna panels A11, two groups of antenna panels B12 and four groups of antenna panels C13;

[0051] Two groups of antenna panels A11 and two groups of antenna panels B groups 12 are cross-arranged to form an antenna panel body. The edges of antenna panel A11 and the edges of adjacent antenna panel B group 12 are connected by self-locking hinges. Each group of antenna panels A11 can be rotated relative to the adjacent antenna panel B group 12 by the self-locking hinge. A connecting notch is formed at the connection between each group of antenna panels A11 and antenna panel B group 12. Antenna panel C group 13 is arranged in the connecting notch. The edges on both sides of antenna panel C group 13 are connected to the edges of adjacent antenna panels A11 and antenna panel B group 12 by self-locking hinges. At the same time, each group of antenna panels A11, antenna panel B group 12 and antenna panel C group 13 can be bent by self-locking hinges. After the antenna panel A11, folding support rod group 23 and antenna panel C group 13 are completely bent by the self-locking hinge, a complete antenna panel unit 1 in a deployed state can be formed.

[0052] The antenna panel group B 12 is composed of two groups of antenna panels B121 symmetrically arranged. The two groups of antenna panels B121 are connected by a self-locking hinge. The end of the self-locking hinge connecting the two groups of antenna panels B121 is provided with a driving component A122. When the antenna panel unit 1 is turned from a folded state to an unfolded state, the driving component A122 drives the self-locking hinge to rotate and separate. Driven by the self-locking hinge, the two groups of antenna panels B121 are turned from a closed state to an open state.

[0053] Antenna panel group C 13 is composed of two groups of symmetrically arranged antenna panels C131, and the two groups of antenna panels C131 are connected by self-locking hinges. The self-locking hinges between the two groups of antenna panels C131 and the self-locking hinges between the two groups of antenna panels B121 are located on the front side of the antenna panel C131, and the antenna panel C131 is connected to the adjacent antenna panel B121 and antenna panel A11 through self-locking hinges. The self-locking hinges connecting the antenna panel C131 to the antenna panel B121 and the antenna panel A11 are located on the back side of the antenna panel C131. When the antenna panel B121 is driven by the driving component A122 to open, the unfolding process of the antenna panel B121 will drive the antenna panel C131 to unfold accordingly, and the two groups of antenna panels C131 and the two groups of antenna panels B121 are both bent outward and unfolded.

[0054] The panel folding and unfolding assembly 2 comprises an umbrella-type transmission seat 21, two groups of long support rods 22, two groups of folding support rod groups 23 and two groups of panel support rods 24;

[0055] The umbrella-type transmission seat 21 is located above the center of the antenna panel unit 1. The umbrella-type transmission seat 21 includes an umbrella seat 211 and a two-way transmission rod group 212. The two-way transmission rod group 212 is arranged at the center of the umbrella seat 211. Two groups of long struts 22 are respectively installed on the outside of the two ends of the umbrella seat 211 through a rotating shaft. The two ends of the two-way transmission rod group 212 are respectively connected to the two groups of long struts 22. The two groups of long struts 22 move synchronously under the linkage of the two-way transmission rod group 212. Two groups of folding strut groups 23 are respectively installed on the inside of the two ends of the umbrella seat 211 through a rotating shaft. The panel strut 24 is arranged between the long strut 22 and the folding strut Between the ends of the rod group 23, a side panel support rod 24 in the panel storage and deployment assembly 2 adjacent to the satellite body is connected to the bottom of the satellite body through a rotating shaft, and the ends of the panel support rods 24 between two adjacent groups of panel storage and deployment assemblies 2 are connected through a rotating shaft. In the process of the antenna panel unit 1 turning from a folded state to an unfolded state, the connecting end of the panel support rod 24 and the satellite body is used as the axis of rotation. The two groups of panel support rods 24 are respectively fixed on the surfaces of the two groups of antenna panels A11. In the process of unfolding the antenna panel group B 12, one side of the panel support rod 24 is turned from a vertical storage state to a horizontal unfolded state. In this process, one side The position adjustment of the panel strut 24 is transmitted to the other side panel strut 24 through the umbrella-type transmission seat 21. During the rotation and unfolding of the panel struts 24 on both sides, the long strut 22 and the umbrella-type transmission seat 21 are driven by the panel strut 24 to rotate and move. During the rotation, the long strut 22 is pulled by the unfolded panel folding and unfolding power assembly 4 to maintain a fixed tilt angle. The umbrella-type transmission seat 21 is restricted by the long strut 22 and maintained at a fixed position. The panel strut 24 continues to rotate until it is horizontal. The folding strut group 23 is pushed to be fully unfolded and locked during the rotation of the panel strut 24. At this time, the umbrella-type transmission seat 21, the long strut 22, the folding strut group 23 and the panel strut 24 all arrive at the designated positions, and the antenna panel A11 arranged on the surface of the panel strut 24 is synchronously moved to a horizontal state with the rotation of the panel strut 24, and the umbrella-type transmission seat 21, the long strut 22, the folding strut group 23 and the panel strut 24 cooperate with each other to support the antenna panel A11, the antenna panel B group 12 and the antenna panel C group 13. When the position of the antenna panel A11 remains fixed, the antenna panel B group 12 and the antenna panel C group 13 connected to the antenna panel A11 synchronously maintain the stability of the unfolded state.

[0056] The folding strut group 23 includes a folding strut A 231 and a folding strut B 232;

[0057] One end of the folding strut A231 is connected to the end of the long strut 22, one end of the folding strut B232 is connected to the other end of the folding strut A231 through a self-locking hinge, and the other end of the folding strut B232 is connected to the panel strut 24. When the long strut 22 is restricted by the panel retraction and extension power assembly 4 and rotates into place and the panel strut 24 continues to rotate, the folding strut A231 and the folding strut B232 are pulled by the panel strut 24 to unfold from a folded state. After the panel strut 24 rotates to a horizontal state, the folding strut A231 and the folding strut B232 are turned from a folded state to a fully unfolded state and locked. At this time, the long strut 22, the folding strut group 23 and the panel strut 24 cooperate to form a stable triangular support structure.

[0058] The panel folding and extending linkage assembly 3 is arranged between two adjacent sets of umbrella-type transmission seats 21, and the panel folding and extending linkage assembly 3 includes a long linkage rod 31 and a short linkage rod 32;

[0059] The two groups of long linkage rods 31 are cross-connected through a rotating shaft with the center as the connection point. Both ends of the two groups of long linkage rods 31 are connected to a group of short linkage rods 32 through a rotating shaft. The ends of the two groups of short linkage rods 32 located on the same side of the two groups of long linkage rods 31 are connected through a rotating shaft. The ends of the two groups of short linkage rods 32 are connected to form a connection point. The panel retraction and extension linkage assembly 3 is connected to the two adjacent groups of umbrella-type transmission seats 21 through a connection. A spiral spring for providing rotational power is installed outside each group of rotating shafts. The long linkage rod 31 and the short linkage rod 32 are both driven by the spiral spring. After the restriction on the panel retraction and extension assembly 2 is released, the long linkage rod 31 and the short linkage rod 32 are both driven by the spiral spring and have a tendency to open. The two adjacent groups of panel retraction and extension assemblies 2 have a tendency to move away from each other under the push of the long linkage rod 31 and the short linkage rod 32.

[0060] The panel retracting and extending power assembly 4 includes a long limiting rod 41, a short limiting rod 42 and a connecting seat 43;

[0061] One end of the long limit rod 41 is connected to the umbrella-type transmission seat 21 adjacent to the satellite body through a rotating shaft, the short limit rod 42 is connected to one end of the long limit rod 41 through a self-locking hinge, the connecting seat 43 is connected to the other end of the short limit rod 42 through a rotating shaft, and the connecting seat 43 is fixed to the surface of the satellite body. The panel retracting and unfolding power assembly 4 also includes a driving assembly B44, which is arranged at the end of the connection between the panel support rod 24 and the satellite body, and the output end of the driving assembly B44 is connected to the panel support rod 24, and the panel support rod 24 is driven by the driving assembly B44. When the unfolding operation is performed, the driving assembly B44 drives the surface The plate support rod 24 rotates, and the rotation of the panel support rod 24 drives the umbrella type transmission seat 21 and the long support rod 22 to rotate synchronously. The rotation of the umbrella type transmission seat 21 pulls one end of the long limit rod 41, and the other end of the long limit rod 41 pulls the short limit rod 42 during the movement. The short limit rod 42 rotates relative to the long limit rod 41 and the connecting seat 43 at the same time. When the short limit rod 42 and the long limit rod 41 are horizontal, they reach a fully expanded state. At this time, the self-locking hinge at the connection between the short limit rod 42 and the long limit rod 41 is locked, and the umbrella type transmission seat 21 and the long support rod 22 are pulled by the long limit rod 41 and the short limit rod 42 to keep their positions fixed.

[0062] When the modular large-scale two-dimensional plane folding and unfolding mechanism is unfolded, the external locking structure releases the position restriction of the antenna panel unit 1, the panel folding and unfolding assembly 2, the panel folding and unfolding linkage assembly 3 and the panel folding and unfolding power assembly 4 and performs the unfolding operation;

[0063] During the unfolding operation, the panel support rod 24 is driven by the driving component B44, and the driving component B44 drives the panel support rod 24 to rotate. The rotation of the panel support rod 24 drives the umbrella-type transmission seat 21 and the long support rod 22 to rotate synchronously to perform the unfolding operation. The driving component B44 drives the panel support rod 24 to rotate. The rotation of the panel support rod 24 drives the umbrella-type transmission seat 21 and the long support rod 22 to rotate synchronously. The rotation of the umbrella-type transmission seat 21 pulls one end of the long limit rod 41, and the other end of the long limit rod 41 pulls the short limit rod 42 during the movement. The short limit rod 42 rotates relative to the long limit rod 41 and the connecting seat 43 at the same time. When the short limit rod 42 and the long limit rod 41 are horizontal, they reach a fully unfolded state. At this time, the self-locking hinge at the connection between the short limit rod 42 and the long limit rod 41 is locked, and the umbrella-type transmission seat 21 and the long support rod 22 are pulled by the long limit rod 41 and the short limit rod 42 to change from tilted to parallel and then keep their positions fixed;

[0064] The panel support rod 24 continues to rotate until it is horizontal, and the folding support rod A231 and the folding support rod B232 are pulled by the panel support rod 24 to unfold from the folded state. After the panel support rod 24 rotates to the horizontal state, the folding support rod A231 and the folding support rod B232 are turned from the folded state to the fully unfolded state and locked. At this time, the long support rod 22, the folding support rod group 23 and the panel support rod 24 cooperate to form a stable triangular support structure, and the umbrella-type transmission seat 21, the long support rod 22, the folding support rod group 23 and the panel support rod 24 all arrive at the specified position, and the antenna panel A11 set on the surface of the panel support rod 24 is synchronously rotated to the horizontal state with the rotation of the panel support rod 24;

[0065] While the panel folding and unfolding assembly 2 is unfolded, the driving assembly A122 works to drive the self-locking hinge to rotate and separate. Driven by the self-locking hinge, the two groups of antenna panels B121 turn from the closed state to the open state. The unfolding process of the antenna panel B121 and the antenna panel A11 drives the antenna panel C131 to unfold with it. The two groups of antenna panels C131 and the two groups of antenna panels B121 are both bent outward and unfolded. When the position of the antenna panel A11 is maintained fixed, the antenna panel B group 12 and the antenna panel C group 13 connected to the antenna panel A11 synchronously maintain the stability of the unfolded state. The umbrella-type transmission seat 21, the long support rod 22, the folding support rod group 23 and the panel support rod 24 cooperate with each other to support the antenna panel A11, the antenna panel B group 12 and the antenna panel C group 13.

[0066] As the umbrella-type transmission seat 21 moves laterally, the rotating shaft connecting each group of long linkage rods 31 and short linkage rods 32 is driven by the spiral spring to unfold. Under the pushing action of the spiral spring, the long linkage rod 31 and the short linkage rod 32 push the two adjacent groups of umbrella-type transmission seats 21 to unfold synchronously. As the adjacent umbrella-type transmission seats 21 move, another group of panel retractable and unfolding components 2 unfold.

[0067] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. A modular large-scale two-dimensional plane folding and unfolding mechanism, characterized in that: It includes an antenna panel unit, a panel retracting and extending component, a panel retracting and extending linkage component and a panel retracting and extending power component; A plurality of groups of antenna panel units are arranged in a transversely spaced manner; The panel retractable assembly is arranged on the surface of the antenna panel unit, and the antenna panel unit is driven by the panel retractable assembly; The panel retracting and extending linkage component is connected between two adjacent groups of panel retracting and extending components, and the two adjacent groups of panel retracting and extending components are retracted and extended in a linkage manner through the panel retracting and extending linkage component; The panel retracting and extending power assembly is arranged on the surface of the satellite body, and the other end of the panel retracting and extending power assembly is connected to the panel retracting and extending assembly close to the side of the satellite.

2. A modular large-scale two-dimensional plane folding and unfolding mechanism as claimed in claim 1, characterized in that: The antenna panel unit includes two groups of antenna panels A, two groups of antenna panels B and four groups of antenna panels C. The two groups of antenna panels A and the two groups of antenna panels B are cross-arranged to form an antenna panel body. The edges of the antenna panels A are connected to the edges of adjacent antenna panels B by self-locking hinges. Each group of antenna panels A can be rotated relative to the adjacent antenna panels B by self-locking hinges. A connecting notch is formed at the connection between each group of antenna panels A and antenna panels B. The antenna panel C is arranged in the connecting notch, and the edges on both sides of the antenna panel C are connected to the edges of adjacent antenna panels A and antenna panels B by self-locking hinges.

3. A modular large-scale two-dimensional plane folding and unfolding mechanism as claimed in claim 2, characterized in that: The antenna panel group B is composed of two groups of antenna panels B that are symmetrically arranged, and the two groups of antenna panels B are connected by a self-locking hinge. The end of the self-locking hinge connecting the two groups of antenna panels B is provided with a driving component A. The antenna panel group C is composed of two groups of antenna panels C that are symmetrically arranged, and the two groups of antenna panels C are connected by a self-locking hinge. The self-locking hinge between the two groups of antenna panels C and the self-locking hinge between the two groups of antenna panels B are located on the front side of the antenna panel C. The antenna panel C is connected to the adjacent antenna panel B and antenna panel A through a self-locking hinge, and the self-locking hinge connecting the antenna panel C to the antenna panel B and the antenna panel A is located on the back side of the antenna panel C.

4. A modular large-scale two-dimensional plane folding and unfolding mechanism as claimed in claim 1, characterized in that: The panel folding and unfolding assembly includes an umbrella-type transmission seat, two groups of long struts, two groups of folding strut groups and two groups of panel struts. The umbrella-type transmission seat is located above the center position of the antenna panel unit. The umbrella-type transmission seat includes an umbrella seat and a two-way transmission rod group. The two-way transmission rod group is arranged at the center position of the umbrella seat. The two groups of long struts are respectively installed on the outside of the two ends of the umbrella seat through rotating shafts. The two ends of the two-way transmission rod group are respectively connected to the two groups of long struts. The two groups of long struts move synchronously under the linkage of the two-way transmission rod group. The two groups of folding strut groups are respectively installed on the inside of the two ends of the umbrella seat through rotating shafts. The panel struts are arranged between the long struts and the ends of the folding strut group. The two groups of panel struts are respectively fixed on the surfaces of the two groups of antenna panels A.

5. A modular large-scale two-dimensional plane folding and unfolding mechanism as claimed in claim 4, characterized in that: The panel support rods in the panel folding and unfolding assembly adjacent to the satellite body are connected to the bottom of the satellite body through a rotating shaft, and the ends of the panel support rods between two adjacent groups of panel folding and unfolding assemblies are connected through a rotating shaft.

6. A modular large-scale two-dimensional plane folding and unfolding mechanism as claimed in claim 4, characterized in that: The folding strut group includes a folding strut A and a folding strut B, one end of the folding strut A is connected to the end of the long strut, one end of the folding strut B is connected to the other end of the folding strut A through a self-locking hinge, and the other end of the folding strut B is connected to the panel strut.

7. A modular large-scale two-dimensional plane folding and unfolding mechanism as claimed in claim 4, characterized in that: The panel retraction and extension linkage assembly is arranged between two adjacent groups of umbrella-type transmission seats, and the panel retraction and extension linkage assembly includes a long linkage rod and a short linkage rod. The two groups of long linkage rods are cross-connected through a rotating shaft with the center as the connection point, and both ends of the two groups of long linkage rods are connected with a group of short linkage rods through a rotating shaft, and the ends of the two groups of short linkage rods located on the same side of the two groups of long linkage rods are connected through a rotating shaft, and the ends of the two groups of short linkage rods are connected to form a connection point, and the panel retraction and extension linkage assembly is connected to the two adjacent groups of umbrella-type transmission seats through the rotating shaft, and a spiral spring providing rotational power is installed outside each group of rotating shafts, and the long linkage rod and the short linkage rod are both driven by the spiral spring.

8. A modular large-scale two-dimensional plane folding and unfolding mechanism as claimed in claim 1, characterized in that: The panel retraction and extension power assembly includes a long limit rod, a short limit rod and a connecting seat. One end of the long limit rod is connected to the adjacent side umbrella-type transmission seat of the satellite body through a rotating shaft, the short limit rod is connected to one end of the long limit rod through a self-locking hinge, and the connecting seat is connected to the other end of the short limit rod through a rotating shaft, and the connecting seat is fixed to the surface of the satellite body.

9. A modular large-scale two-dimensional plane folding and unfolding mechanism as claimed in claim 8, characterized in that: The panel retraction and extension power assembly also includes a driving assembly B, which is arranged at the end of the connection between the panel support rod and the satellite body. The output end of the driving assembly B is connected to the panel support rod, and the panel support rod is driven by the driving assembly B.

10. A method for using the modular large-scale two-dimensional plane folding and unfolding mechanism according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1, the external locking structure releases the position restriction on the antenna panel unit, the panel retracting and extending assembly, the panel retracting and extending linkage assembly and the panel retracting and extending power assembly; Step S2, performing an unfolding operation, the panel support rod is driven by the driving component B, the driving component B drives the panel support rod to rotate, and the rotation of the panel support rod drives the umbrella-type transmission seat and the long support rod to rotate synchronously to perform the unfolding operation; Step S2, the driving component B drives the panel support rod to rotate, and the rotation of the panel support rod drives the umbrella-type transmission seat and the long support rod to rotate synchronously. The rotation of the umbrella-type transmission seat pulls one end of the long limit rod, and the other end of the long limit rod pulls the short limit rod during the movement. The short limit rod rotates relative to the long limit rod and the connecting seat at the same time. When the short limit rod and the long limit rod are horizontal, they reach a fully deployed state. At this time, the self-locking hinge at the connection between the short limit rod and the long limit rod is locked, and the umbrella-type transmission seat and the long support rod are pulled by the long limit rod and the short limit rod to change from tilted to parallel and then keep their positions fixed; Step S3, the panel support rod continues to rotate until it is horizontal, and the folding support rod A and the folding support rod B are pulled by the panel support rod to unfold from the folded state. After the panel support rod rotates to the horizontal state, the folding support rod A and the folding support rod B are turned from the folded state to the fully unfolded state and locked. At this time, the long support rod, the folding support rod group and the panel support rod cooperate to form a stable triangular support structure, the umbrella-type transmission seat, the long support rod, the folding support rod group and the panel support rod all arrive at the specified position, and the antenna panel A set on the surface of the panel support rod is synchronized to the horizontal state with the rotation of the panel support rod; Step S4, while step S1 is being performed, the driving component A works to drive the self-locking hinge to rotate and separate, and the two groups of antenna panels B are turned from a closed state to an open state under the drive of the self-locking hinge. The unfolding process of antenna panel B and antenna panel A drives antenna panel C to unfold with it, and the two groups of antenna panels C and the two groups of antenna panels B are both bent outward and unfolded. When the position of antenna panel A is maintained fixed, the antenna panel group B and the antenna panel group C connected to antenna panel A synchronously maintain the stability of the unfolded state, and the umbrella-type transmission seat, the long support rod, the folding support rod group and the panel support rod cooperate with each other to play a supporting role for antenna panel A, antenna panel group B and antenna panel group C; Step S5. While step S1 is being performed, as the umbrella-type transmission seat moves laterally, the rotating shaft connecting each group of long linkage rods and short linkage rods is driven by the spiral spring to unfold. Under the pushing action of the spiral spring, the long linkage rod and the short linkage rod push the two adjacent groups of umbrella-type transmission seats to unfold synchronously. As the adjacent umbrella-type transmission seats move, another group of panel retractable and unfolding components unfold.

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