A rope-tethered self-contracting passively driven flexible solar wing deployment mechanism

Abstract

The present invention discloses a rope-tethered self-contracting passively driven flexible solar wing deployment mechanism, comprising a solar wing array, a support rod assembly, and a passive driving assembly, wherein the solar wing array is connected to a first support rod assembly and a second support rod assembly; the support rod assembly comprises two long rods and a short rod, the two ends of each long rod are respectively hinged to the short rod, two passive driving assemblies are arranged in the long rod, a passive driving assembly is arranged inside each short rod, the two long rods are cross-arranged, and one of the passive driving assemblies of the long rod is connected to the passive driving assembly in the short rod opposite thereto. The present invention changes the angle of the long rod and the short rod by the passive driving assembly to realize the passive deployment or folding and contraction of the solar wing deployment mechanism, and has the characteristics of simple and reliable structure, compact layout, light weight, and large deployment and storage ratio.

Description

Technical Field

[0001] The present invention belongs to the technical field of passive deployment of flexible solar cell arrays, and in particular relates to a rope-system self-contracting passively driven flexible solar wing deployment mechanism. Background Art

[0002] Solar wings are an important part of the energy function of spacecraft. Flexible solar wings are usually a kind of solar cells attached to polyimide substrates. They have the advantages of light weight, foldability and small size. The energy provided by solar wings depends on the patch area after unfolding and the power conversion rate of the cells. Therefore, the larger patch area of ​​the solar wings after unfolding is important for the operation and life of spacecraft, especially large spacecraft in orbit. In the active launch phase, the volume occupied by the solar wings after folding is small, which can save launch costs.

[0003] Passive deployment of solar wings has more advantages than active deployment. Active deployment requires the addition of motors and multiple cable bundles, which increases the weight of the entire satellite at the transmitting end and increases economic costs.

[0004] Based on the contradictions exposed above, it is necessary to develop a solar wing deployment mechanism that has a relatively large deployment and storage capacity, is passively driven, and has a compact structure. Summary of the invention

[0005] In view of the above technical problems, the present invention provides a rope-based self-contracting passively driven flexible solar wing deployment mechanism, which has the characteristics of large deployment and storage ratio, compact structure, and light weight.

[0006] To achieve the above object, the technical solution of the present invention is:

[0007] A rope-tethered self-contracting passively driven flexible solar wing deployment mechanism, comprising a solar wing array, a first support rod assembly, a second support rod assembly, and a passive drive assembly, wherein the solar wing array is connected to the first support rod assembly and the second support rod assembly;

[0008] The first support rod assembly comprises a first long rod, a first short rod and a second short rod, one end of the first long rod is hinged to one end of the first short rod, and the other end of the first long rod is hinged to one end of the second short rod;

[0009] The second support rod assembly includes a second long rod, a third short rod, and a fourth short rod, and two ends of the second long rod are hinged to the third short rod and the fourth short rod respectively;

[0010] The first long rod and the second long rod are arranged crosswise, and the first support assembly and the second support assembly are symmetrical with the intersection of the first long rod and the second long rod as the center;

[0011] The passive drive assembly includes multiple groups of passive drive assemblies, wherein a first passive drive assembly is arranged in one end of the first long rod, and a second passive drive assembly is arranged in the other end; a third passive drive assembly is arranged in one end of the second long rod, and a fourth passive drive assembly is arranged in the other end;

[0012] A fifth passive driving component is disposed inside the first short rod, a sixth passive driving component is disposed inside the second short rod, a seventh passive driving component is disposed inside the third short rod, and an eighth passive driving component is disposed inside the fourth short rod;

[0013] The first passive drive component arranged at one end of the first long rod close to the first short rod is connected to the seventh passive drive component, the second passive drive component arranged at one end of the first long rod close to the second short rod is connected to the eighth passive drive component, the third passive drive component arranged at one end of the second long rod close to the third short rod is connected to the fifth passive drive component, and the fourth passive drive component arranged at one end of the second long rod close to the fourth short rod is connected to the sixth passive drive component.

[0014] In one embodiment of the present invention, the second passive drive assembly comprises a second fixed pulley, a second movable pulley and a second elastic member, wherein the second fixed pulley is arranged in the end portion where the first long rod and the second short rod are connected, and one end of the second elastic member is fixed in the first long rod, and the other end is connected to the second movable pulley;

[0015] The eighth passive driving assembly comprises an eighth fixed pulley, an eighth movable pulley and an eighth elastic member, wherein the eighth fixed pulley is arranged in the end portion where the fourth short rod and the second long rod are connected, and one end of the eighth elastic member is fixed in the fourth short rod, and the other end is connected to the eighth movable pulley;

[0016] The second movable pulley, the second fixed pulley, the eighth fixed pulley and the eighth movable pulley are connected by a first pulley rope;

[0017] The fourth passive drive assembly comprises a fourth fixed pulley, a fourth movable pulley and a fourth elastic member, wherein the fourth fixed pulley is arranged in the end portion where the second long rod and the fourth short rod are connected, and one end of the fourth elastic member is fixed in the second long rod, and the other end is connected to the fourth movable pulley;

[0018] The sixth passive drive assembly comprises a sixth fixed pulley, a sixth movable pulley and a sixth elastic member, wherein the sixth fixed pulley is arranged in the end portion where the second short rod is connected to the first long rod, and one end of the sixth elastic member is fixed in the second short rod, and the other end is connected to the sixth movable pulley;

[0019] The fourth movable pulley, the fourth fixed pulley, the sixth fixed pulley and the sixth movable pulley are connected by a second pulley rope;

[0020] The third passive drive assembly comprises a third fixed pulley, a third movable pulley and a third elastic member, wherein the third fixed pulley is arranged in the end portion where the second long rod and the third short rod are connected, and one end of the third elastic member is fixed in the second long rod, and the other end is connected to the third movable pulley;

[0021] The fifth passive drive assembly comprises a fifth fixed pulley, a fifth movable pulley and a fifth elastic member, wherein the fifth fixed pulley is arranged in the end portion where the first short rod is connected to the first long rod, and one end of the fifth elastic member is fixed in the first short rod, and the other end is connected to the fifth movable pulley;

[0022] The third movable pulley, the third fixed pulley, the fifth fixed pulley and the fifth movable pulley are connected by a third pulley rope;

[0023] The first passive drive assembly comprises a first fixed pulley, a first movable pulley and a first elastic member, wherein the first fixed pulley is arranged in the end portion where the first long rod and the first short rod are connected, and one end of the first elastic member is fixed in the first long rod, and the other end is connected to the first movable pulley;

[0024] The seventh passive drive assembly comprises a seventh fixed pulley, a seventh movable pulley and a seventh elastic member, wherein the seventh fixed pulley is arranged in the end portion where the third short rod and the second long rod are connected, and one end of the seventh elastic member is fixed in the third short rod, and the other end is connected to the seventh movable pulley;

[0025] The first movable pulley, the first fixed pulley, the seventh fixed pulley and the seventh movable pulley are connected by a fourth pulley rope;

[0026] During the active launch phase, the solar wing array is pressed by the clamping device to maintain a folded and contracted state. At this time, the first to eighth elastic members are all in an extended state. After the clamping device is released, the first to second elastic members retract from the extended state due to the elastic force, and the solar wing array begins to unfold from a folded and telescopic state until the angle between the long rod and the short rod is unfolded to a suitable angle. A tensioning mechanism is provided at the hinge position of the long rod and the short rod to keep the unfolded solar wing array in an unfolded state.

[0027] In one embodiment of the present invention, it also includes a first load balancing system and a second load balancing system. The two ends of the solar wing array are respectively connected to the first load balancing system and the second load balancing system. The ends of the first short rod and the third short rod away from the long rod are connected to the first load balancing system, and the ends of the second short rod and the fourth short rod away from the long rod are connected to the second load balancing system.

[0028] In one embodiment of the present invention, the first load balancing system and the second load balancing system are connected to the ends of the solar wing array through constant force elastic members.

[0029] In one embodiment of the present invention, it also includes a synchronous deployment component, which includes a first synchronous deployment component and a second synchronous deployment component. The first synchronous deployment component is connected to one end of the first short rod and the third short rod away from the long rod, and the second synchronous deployment component is connected to one end of the second short rod and the fourth short rod away from the long rod.

[0030] In one embodiment of the present invention, the first synchronous deployment assembly includes a first cable pulley and a second cable pulley, the first cable pulley is coaxially rotatably connected to an end of the first short rod away from the first long rod, the second cable pulley is coaxially rotatably connected to an end of the third short rod away from the second long rod, and the first cable pulley and the second cable pulley are connected by a first coaxial belt;

[0031] The second synchronous deployment assembly includes a third cable pulley and a fourth cable pulley, the third cable pulley is coaxially rotatably connected to an end of the second short rod away from the first long rod, the fourth cable pulley is coaxially rotatably connected to an end of the fourth short rod away from the second long rod, and the third cable pulley and the fourth cable pulley are connected by a second coaxial cloth belt.

[0032] In one embodiment of the present invention, at least one starting elastic member is disposed on the first load-balancing system and / or the second load-balancing system.

[0033] In one embodiment of the present invention, two ends of the first long rod are respectively hinged to the first short rod and the second short rod through hinges, and two ends of the second long rod are respectively hinged to the third short rod and the fourth short rod through hinges.

[0034] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0035] The flexible solar wing unfolding mechanism of the present invention adopts a passive driving component to change the angle between the first long rod and the first short rod and the second short rod, and the angle between the second long rod and the third short rod and the fourth short rod to achieve passive unfolding or folding and contraction of the solar wing unfolding mechanism. It has a simple and reliable structure, compact layout, light weight, and a large unfolding and storage ratio.

[0036] In a preferred embodiment of the present invention, a fixed pulley, a movable pulley and an elastic member are used to achieve passive drive. The first passive drive component at the end of the first long rod and the seventh passive drive component of the third short rod are connected by the same pulley rope, the second passive drive component at the end of the first long rod and the eighth passive drive component of the fourth short rod are connected by the same pulley rope, the third passive drive component at the end of the second long rod and the fifth passive drive component of the first short rod are connected by the same pulley rope, the fourth passive drive component at the end of the second long rod and the sixth passive drive component of the second short rod are connected by the same pulley rope, and the spontaneous elastic force of the elastic member is used to provide power to change the angle between the long rod and the short rod and the distance between the same ends of the long rods, thereby realizing the passive deployment of the solar wing array. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the deployed state of the rope self-contraction passive drive deployment mechanism according to an embodiment of the present invention;

[0038] Figure 2 It is a schematic diagram of a folded state of a rope-tethered self-contracting passively driven deployment mechanism according to an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of a state in which the rope-tethered self-contracting passively driven deployment mechanism according to an embodiment of the present invention is deployed at a 30-degree deployment angle;

[0040] Figure 4 It is a schematic diagram of the composition of the second passive driving component, the fourth passive driving component, the sixth passive driving component and the eighth passive driving component of the present invention.

[0041] Description of the accompanying drawings: 1-solar wing array; 2-first long rod; 3-second long rod; 4-first short rod; 5-second short rod; 6-third short rod; 7-fourth short rod; 8-hinge; 9-first load-balancing system; 10-second load-balancing system; 11-constant force elastic member; 12-starting elastic member; 13-first cable pulley; 14-second cable pulley; 15-third cable pulley; 16-fourth cable pulley; 17-first synchronous belt; 18-second synchronous belt; 19-second fixed pulley; 20-second movable pulley; 21-the second elastic member; 22-the eighth fixed pulley; 23-the eighth movable pulley; 24-the eighth elastic member; 25-the first pulley rope; 26-the second pulley rope; 27-the third pulley rope; 28-the fourth pulley rope; 29-the first passive drive component; 30-the second passive drive component; 31-the third passive drive component; 32-the fourth passive drive component; 33-the fifth passive drive component; 34-the sixth passive drive component; 35-the seventh passive drive component; 36-the eighth passive drive component. DETAILED DESCRIPTION

[0042] The following is a further detailed description of a rope-tethered self-contracting passively driven deployment mechanism proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description.

[0043] See also Figure 1-4 , a rope-tethered self-contracting passively driven flexible solar wing deployment mechanism, comprising a solar wing array 1, a first support rod assembly, a second support rod assembly, and a passive driving assembly, wherein the solar wing array 1 is connected to the first support rod assembly and the second support rod assembly;

[0044] The first support rod assembly comprises a first long rod 2, a first short rod 4 and a second short rod 5, one end of the first long rod 2 is hinged to one end of the first short rod 4 through a hinge 8, and the other end of the first long rod 2 is hinged to one end of the second short rod 5 through a hinge 8;

[0045] The second support rod assembly comprises a second long rod 3, a third short rod 6 and a fourth short rod 7. One end of the second long rod 3 is hinged to one end of the third short rod 6 through a hinge 8, and the other end of the second long rod 3 is hinged to one end of the fourth short rod 7 through a hinge 8.

[0046] The long rod and the short rod are hinged by a hinge 8. When the solar wing array 1 is folded, the long rod and the short rod can fit completely together, reducing the mechanical response of the transmitting end.

[0047] The first long rod 2 and the second long rod 3 are arranged crosswise, and the first support assembly and the second support assembly are centrally symmetrical about the intersection of the first long rod 2 and the second long rod 3;

[0048] The passive drive assembly includes multiple groups of passive drive assemblies. A first passive drive assembly 29 is arranged in one end of the first long rod 2, and a second passive drive assembly 30 is arranged in the other end. A third passive drive assembly 31 is arranged in one end of the second long rod 3, and a fourth passive drive assembly 32 is arranged in the other end.

[0049] A fifth passive driving component 33 is disposed inside the first short rod 4, a sixth passive driving component 34 is disposed inside the second short rod 5, a seventh passive driving component 35 is disposed inside the third short rod 6, and an eighth passive driving component 36 is disposed inside the fourth short rod 7;

[0050] The first passive driving component 29 arranged at one end of the first long rod 2 close to the first short rod 4 is connected to the seventh passive driving component 35, the second passive driving component 30 arranged at one end of the first long rod 2 close to the second short rod 5 is connected to the eighth passive driving component 36, the third passive driving component 31 arranged at one end of the second long rod 3 close to the third short rod 6 is connected to the fifth passive driving component 33, and the fourth passive driving component 32 arranged at one end of the second long rod 3 close to the fourth short rod 7 is connected to the sixth passive driving component 34.

[0051] See also Figure 4 The second passive driving component 30 includes a second fixed pulley 19, a second movable pulley 20 and a second elastic member 21. The second fixed pulley 19 is arranged in the end portion where the first long rod 2 and the second short rod 5 are connected. One end of the second elastic member 21 is fixed in the first long rod 2, and the other end is connected to the second movable pulley 20.

[0052] The eighth passive driving assembly 36 comprises an eighth fixed pulley 22, an eighth movable pulley 23 and an eighth elastic member 24, wherein the eighth fixed pulley 22 is arranged in the end portion where the fourth short rod 7 is connected to the second long rod 3, and one end of the eighth elastic member 24 is fixed in the fourth short rod 7, and the other end is connected to the eighth movable pulley 23;

[0053] The second movable pulley 20 , the second fixed pulley 19 , the eighth fixed pulley 22 and the eighth movable pulley 23 are connected by a first pulley rope 25 .

[0054] The fourth passive driving component 32 includes a fourth fixed pulley, a fourth movable pulley and a fourth elastic member, wherein the fourth fixed pulley is arranged in the end portion where the second long rod 3 and the fourth short rod 7 are connected, and one end of the fourth elastic member is fixed in the second long rod 3, and the other end is connected to the fourth movable pulley;

[0055] The sixth passive driving component 34 includes a sixth fixed pulley, a sixth movable pulley and a sixth elastic member, wherein the sixth fixed pulley is arranged in the end portion where the second short rod 5 is connected to the first long rod 2, and one end of the sixth elastic member is fixed in the second short rod 5, and the other end is connected to the sixth movable pulley;

[0056] The fourth movable pulley, the fourth fixed pulley, the sixth fixed pulley and the sixth movable pulley are connected by a second pulley rope 26 .

[0057] The third passive drive assembly 31 includes a third fixed pulley, a third movable pulley and a third elastic member, wherein the third fixed pulley is arranged in the end portion where the second long rod 3 and the third short rod 6 are connected, and one end of the third elastic member is fixed in the second long rod 3, and the other end is connected to the third movable pulley;

[0058] The fifth passive driving component 33 includes a fifth fixed pulley, a fifth movable pulley and a fifth elastic member, wherein the fifth fixed pulley is arranged in the end portion where the first short rod 4 is connected to the first long rod 2, and one end of the fifth elastic member is fixed in the first short rod 4, and the other end is connected to the fifth movable pulley;

[0059] The third movable pulley, the third fixed pulley, the fifth fixed pulley and the fifth movable pulley are connected by a third pulley rope 27 .

[0060] The first passive driving assembly 29 includes a first fixed pulley, a first movable pulley and a first elastic member, wherein the first fixed pulley is arranged in the end portion where the first long rod 2 and the first short rod 4 are connected, and one end of the first elastic member is fixed in the first long rod 2, and the other end is connected to the first movable pulley;

[0061] The seventh passive driving component 35 includes a seventh fixed pulley, a seventh movable pulley and a seventh elastic member, wherein the seventh fixed pulley is arranged in the end portion where the third short rod 6 is connected to the second long rod 3, and one end of the seventh elastic member is fixed in the third short rod 6, and the other end is connected to the seventh movable pulley;

[0062] The first movable pulley, the first fixed pulley, the seventh fixed pulley and the seventh movable pulley are connected by a fourth pulley rope 28 .

[0063] During the active launch phase, the solar wing array 1 is pressed by the clamping device to maintain a folded and contracted state. At this time, the first to eighth elastic members 24 are all in an extended state. After the clamping device is released, the first to second elastic members 21 retract from the extended state due to the elastic force, and the solar wing array 1 begins to unfold from the folded and telescopic state until the angle between the long rod and the short rod is unfolded to a suitable angle. A tensioning mechanism is set at the hinge position of the long rod and the short rod to keep the unfolded solar wing array 1 in the unfolded state. For details, see Figure 4 In the process of the second elastic member 21 and the eighth elastic member 24 returning to the normal state from the stretched state, under the action of the elastic force, the second movable pulley 20 moves in the first long rod 2 in the direction away from the second fixed pulley 19, and the second eighth movable pulley moves in the fourth short rod 7 in the direction away from the eighth fixed pulley 22. At the same time, the fourth passive driving assembly 32 and the sixth passive driving assembly 34 work simultaneously, so that the first long rod 2, the second long rod 3, the second short rod 5 and the fourth short rod 7 rotate, and the distance between the end of the first long rod 2 connected to the second short rod 5 and the end of the second long rod 3 connected to the fourth short rod 7 is reduced. At the same time, the third passive driving assembly 31, the fifth passive driving assembly 33, the first passive driving assembly 29 and the seventh passive driving assembly 35 work simultaneously, so that the distance between the end of the first long rod 2 connected to the first short rod 4 and the end of the second long rod 3 connected to the third short rod 6 is reduced, so as to realize the deployment of the solar wing array 1. The movable pulley moves in the long rod and the short rod, which can reduce the contraction stroke of the pulley rope.

[0064] like Figure 1 and 3 As shown, the solar wing deployment mechanism of the present application is symmetrically distributed around the center line of the intersection of the first long rod 2 and the second long rod 3.

[0065] The deployment mechanism also includes a first load-balancing system 9 and a second load-balancing system 10. The two ends of the solar wing array 1 are respectively connected to the first load-balancing system 9 and the second load-balancing system 10. The ends of the first short rod 4 and the third short rod 6 away from the long rod are connected to the first load-balancing system 9, and the ends of the second short rod 5 and the fourth short rod 7 away from the long rod are connected to the second load-balancing system 10.

[0066] The first load balancing system 9 and the second load balancing system 10 are connected to the ends of the solar wing array 1 through the constant force elastic member 11 .

[0067] At least one starting elastic member 12 is provided on the first load balancing system 9 and / or the second load balancing system 10. In the present embodiment, starting elastic members 12 are provided on the ends of both the first load balancing system 9 and the second load balancing system 10. Due to the retracted state, the short rod is in close contact with the long rod, and the initial deployment angle of the passive drive component is small. The starting elastic member 12 can provide a deployment driving force in the initial state.

[0068] The unfolding mechanism also includes a synchronous unfolding component, which includes a first synchronous unfolding component and a second synchronous unfolding component. The first synchronous unfolding component is connected to the end of the first short rod 4 and the third short rod 6 away from the long rod, and the second synchronous unfolding component is connected to the end of the second short rod 5 and the fourth short rod 7 away from the long rod.

[0069] The first synchronous deployment component includes a first cable pulley 13 and a second cable pulley 14. The first cable pulley 13 is coaxially rotatably connected to an end of the first short rod 4 away from the first long rod 2, and the second cable pulley 14 is coaxially rotatably connected to an end of the third short rod 6 away from the second long rod 3. The first cable pulley 13 and the second cable pulley 14 are connected by a first coaxial tape 17. During the deployment process, when the first short rod 4 and the third short rod 6 rotate, the first cable pulley 13 and the second cable pulley 14 rotate at the same time, and the rotation angles are the same to ensure synchronization.

[0070] The second synchronous deployment component includes a third cable pulley 15 and a fourth cable pulley 16. The third cable pulley 15 is coaxially rotatably connected to the end of the second short rod 5 away from the first long rod 2. The fourth cable pulley 16 is coaxially rotatably connected to the end of the fourth short rod 7 away from the second long rod 3. The third cable pulley 15 and the fourth cable pulley 16 are connected by a second coaxial tape 18. During the deployment process, when the second short rod 5 and the fourth short rod 7 rotate, the third cable pulley 15 and the fourth cable pulley 16 rotate at the same time, and the rotation angles are the same to ensure synchronization.

[0071] The entire unfolding mechanism adopts two sets of synchronous unfolding components to ensure the synchronization of the two ends of the long rod.

[0072] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A rope-tethered self-contracting passively driven flexible solar wing deployment mechanism, characterized in that: It includes a solar wing array, a first support rod assembly, a second support rod assembly, and a passive drive assembly, wherein the solar wing array is connected to the first support rod assembly and the second support rod assembly; The first support rod assembly comprises a first long rod, a first short rod and a second short rod, one end of the first long rod is hinged to one end of the first short rod, and the other end of the first long rod is hinged to one end of the second short rod; The second support rod assembly includes a second long rod, a third short rod, and a fourth short rod, and two ends of the second long rod are hinged to the third short rod and the fourth short rod respectively; The first long rod and the second long rod are arranged crosswise, and the first support assembly and the second support assembly are symmetrical with the intersection of the first long rod and the second long rod as the center; The passive drive assembly includes multiple groups of passive drive assemblies, wherein a first passive drive assembly is arranged in one end of the first long rod, and a second passive drive assembly is arranged in the other end; a third passive drive assembly is arranged in one end of the second long rod, and a fourth passive drive assembly is arranged in the other end; A fifth passive driving component is arranged inside the first short rod, a sixth passive driving component is arranged inside the second short rod, a seventh passive driving component is arranged inside the third short rod, and an eighth passive driving component is arranged inside the fourth short rod; The first passive driving assembly provided at one end of the first long rod close to the first short rod is connected to the seventh passive driving assembly, the second passive driving assembly provided at one end of the first long rod close to the second short rod is connected to the eighth passive driving assembly, the third passive driving assembly provided at one end of the second long rod close to the third short rod is connected to the fifth passive driving assembly, and the fourth passive driving assembly provided at one end of the second long rod close to the fourth short rod is connected to the sixth passive driving assembly; The second passive drive assembly comprises a second fixed pulley, a second movable pulley and a second elastic member, wherein the second fixed pulley is arranged in the end portion where the first long rod and the second short rod are connected, and one end of the second elastic member is fixed in the first long rod and the other end is connected to the second movable pulley; The eighth passive driving assembly comprises an eighth fixed pulley, an eighth movable pulley and an eighth elastic member, wherein the eighth fixed pulley is arranged in the end portion where the fourth short rod and the second long rod are connected, and one end of the eighth elastic member is fixed in the fourth short rod, and the other end is connected to the eighth movable pulley; The second movable pulley, the second fixed pulley, the eighth fixed pulley and the eighth movable pulley are connected by a first pulley rope; The fourth passive drive assembly comprises a fourth fixed pulley, a fourth movable pulley and a fourth elastic member, wherein the fourth fixed pulley is arranged in the end portion where the second long rod and the fourth short rod are connected, and one end of the fourth elastic member is fixed in the second long rod, and the other end is connected to the fourth movable pulley; The sixth passive drive assembly comprises a sixth fixed pulley, a sixth movable pulley and a sixth elastic member, wherein the sixth fixed pulley is arranged in the end portion where the second short rod is connected to the first long rod, and one end of the sixth elastic member is fixed in the second short rod, and the other end is connected to the sixth movable pulley; The fourth movable pulley, the fourth fixed pulley, the sixth fixed pulley and the sixth movable pulley are connected by a second pulley rope; The third passive drive assembly comprises a third fixed pulley, a third movable pulley and a third elastic member, wherein the third fixed pulley is arranged in the end portion where the second long rod and the third short rod are connected, and one end of the third elastic member is fixed in the second long rod, and the other end is connected to the third movable pulley; The fifth passive drive assembly comprises a fifth fixed pulley, a fifth movable pulley and a fifth elastic member, wherein the fifth fixed pulley is arranged in the end portion where the first short rod is connected to the first long rod, and one end of the fifth elastic member is fixed in the first short rod, and the other end is connected to the fifth movable pulley; The third movable pulley, the third fixed pulley, the fifth fixed pulley and the fifth movable pulley are connected by a third pulley rope; The first passive drive assembly comprises a first fixed pulley, a first movable pulley and a first elastic member, wherein the first fixed pulley is arranged in the end portion where the first long rod and the first short rod are connected, and one end of the first elastic member is fixed in the first long rod, and the other end is connected to the first movable pulley; The seventh passive drive assembly comprises a seventh fixed pulley, a seventh movable pulley and a seventh elastic member, wherein the seventh fixed pulley is arranged in the end portion where the third short rod and the second long rod are connected, and one end of the seventh elastic member is fixed in the third short rod, and the other end is connected to the seventh movable pulley; The first movable pulley, the first fixed pulley, the seventh fixed pulley and the seventh movable pulley are connected by a fourth pulley rope.

2. The rope-tethered self-contracting passively driven flexible solar wing deployment mechanism according to claim 1 is characterized in that: It also includes a first load balancing system and a second load balancing system. The two ends of the solar wing array are respectively connected to the first load balancing system and the second load balancing system. The ends of the first short rod and the third short rod away from the long rod are connected to the first load balancing system. The ends of the second short rod and the fourth short rod away from the long rod are connected to the second load balancing system.

3. The rope-tethered self-contracting passively driven flexible solar wing deployment mechanism according to claim 2 is characterized in that: The first load balancing system and the second load balancing system are connected to the ends of the solar wing array through constant force elastic members.

4. The rope-tethered self-contracting passively driven flexible solar wing deployment mechanism according to claim 2, characterized in that: It also includes a synchronous deployment component, which includes a first synchronous deployment component and a second synchronous deployment component. The first synchronous deployment component is connected to one end of the first short rod and the third short rod away from the long rod, and the second synchronous deployment component is connected to one end of the second short rod and the fourth short rod away from the long rod.

5. The rope-tethered self-contracting passively driven flexible solar wing deployment mechanism according to claim 4 is characterized in that: The first synchronous deployment assembly comprises a first cable pulley and a second cable pulley, the first cable pulley is coaxially rotatably connected to an end of the first short rod away from the first long rod, the second cable pulley is coaxially rotatably connected to an end of the third short rod away from the second long rod, and the first cable pulley and the second cable pulley are connected by a first coaxial belt; The second synchronous deployment assembly includes a third cable pulley and a fourth cable pulley, the third cable pulley is coaxially rotatably connected to an end of the second short rod away from the first long rod, the fourth cable pulley is coaxially rotatably connected to an end of the fourth short rod away from the second long rod, and the third cable pulley and the fourth cable pulley are connected by a second coaxial cloth belt.

6. The rope-tethered self-contracting passively driven flexible solar wing deployment mechanism according to claim 2, characterized in that: At least one starting elastic member is arranged on the first load-sharing system and / or the second load-sharing system.

7. The rope-tethered self-contracting passively driven flexible solar wing deployment mechanism according to any one of claims 1 to 6, characterized in that: The two ends of the first long rod are respectively hinged to the first short rod and the second short rod through hinges, and the two ends of the second long rod are respectively hinged to the third short rod and the fourth short rod through hinges.

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