A flexible solar wing folding and unfolding mechanism based on pod poles

Abstract

The present invention provides a flexible solar wing folding and unfolding mechanism based on a pod pole, comprising two rigid substrate plates and a plurality of flexible substrates stacked therebetween, two self-resilient extension arms arranged on both sides of the solar wing, a motor drive device, a pulley assembly and a tensioning mechanism. The extension arm can automatically unfold to form the track required for the solar wing to unfold. After being guided by the motor drive device and the guide wheel, the steel wire rope passes through the extension arm cavity. The flexible substrate and the side wall of the outer rigid substrate are respectively connected to the extension arm through flexible and rigid tensioning mechanisms. When the substrate is unfolded, the flexible and rigid tensioning mechanisms slide along the extension arm to drive the flexible and rigid substrates to unfold in place. In the present invention, the solar wing and the extension arm are unfolded or folded in sequence, avoiding interference between the two when moving at the same time, and the folded volume is small, meeting the size requirements of stacked satellite installation. When the size of the solar wing is expanded, only the length of the self-resilient extension arm needs to be increased, and the diameter does not increase significantly after winding, so it is suitable for various giant constellations.

Description

Technical Field

[0001] The invention belongs to the technical field of solar wing folding and unfolding, and in particular relates to a flexible solar wing folding and unfolding mechanism based on a pod rod. Background Art

[0002] Flexible solar wing retractable and deployable mechanisms mainly include truss type, inflatable type and self-rebound type. Truss type deployment mechanisms are generally hinged quadrilaterals or triangles. Truss type deployment technology is mature and has high deployment reliability, but it is heavy and has a large folded volume. Moreover, as the area of ​​the solar wing increases, its weight and folded volume increase proportionally, the deployment stiffness decreases, and the scalability of the size is poor. In addition, the structure of the truss type deployment mechanism is complex, and a large number of hinge connections are required in the deployment mechanism, which is costly and not suitable for the mass production construction and cost control requirements of giant constellations.

[0003] The inflatable deployment mechanism is made of a flexible composite film, with a cavity inside the structure. It is expanded by inflation, and after expansion and curing, it is used to support solar cells. This type of deployment mechanism is light in weight, and the structural stiffness depends on the size of the inflation pressure. It has high requirements for the strength, density and adaptability of the material to the space environment, and the structural complexity is low. At present, there are many studies on the deployment process analysis, materials and curing process of the inflatable deployment mechanism, but none of them have reached the engineering application stage, there is no precedent for in-orbit flight, and the process maturity is low.

[0004] The self-rebounding deployment system uses a self-deploying elastic rod-type extension arm to drive the solar wing to unfold and provide support, such as the rolled solar array ROSA developed by the American DSS company. Compared with the truss-type deployment system, this method greatly reduces the overall mass of the mechanism, and the deployment stiffness is equivalent to the truss type, with a high storage ratio. At the same time, it avoids the use of a large number of deployment hinges and coated parts, and the cost is lower than that of the truss type. However, this type of deployment system has the following defects when it is folded and unfolded: First, when the deployment arm and the solar wing are unfolded at the same time, there may be mutual interference, and the deployment reliability is poor; second, when the solar wing is folded, the solar wing is wound together with the deployment mechanism, and is limited by the bending radius of the battery and circuit, forming a cylindrical structure after winding, and the cylindrical structure is not suitable for the stacked star installation layout. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the conventional flexible solar wing folding and unfolding mechanism in the prior art, such as complex structural composition, high cost, and the cylindrical structure formed by the solar wing and the unfolding mechanism being unfolded together is not suitable for a stacked star-mounted layout, and to provide a flexible solar wing folding and unfolding mechanism based on a pod pole.

[0006] To achieve the above purpose, the technical solution provided by the present invention is:

[0007] A flexible solar wing folding and unfolding mechanism based on a pod pole, wherein the flexible solar wing comprises a substrate assembly, wherein the substrate assembly comprises an inner rigid substrate, an outer rigid substrate, and a plurality of flexible substrates stacked between the outer rigid substrate and the inner rigid substrate;

[0008] The deployment mechanism includes a base plate, a motor drive device, a rope pulley assembly, a tensioning mechanism and a self-rebounding extension arm;

[0009] The two bottom plates are symmetrically arranged on both sides of the substrate assembly, and the bottom plates are coplanar with the surface of the substrate assembly;

[0010] The front ends of the two extension arms are symmetrically fixed on the bottom plate, and the extension direction of the extension arms is the same as the extension direction of the base plate assembly;

[0011] The tensioning mechanism includes a rigid tensioning component, a plurality of flexible tensioning components and a flexible pull rope, wherein the flexible tensioning component and the rigid tensioning component are both mounted on the extension arm body; the flexible tensioning component is fixedly connected to the side wall of the flexible substrate, and adjacent flexible tensioning components and flexible tensioning components and rigid tensioning components are connected through the flexible pull rope; the rigid tensioning component is fixedly connected to the side wall of the outer rigid substrate;

[0012] The rope wheel assembly includes a rope winding wheel, a first steel wire rope, a second steel wire rope, a first guide wheel assembly, a second guide wheel assembly, a third guide wheel assembly, a transfer rope and a fourth guide wheel assembly;

[0013] One end of the first steel wire rope and the second steel wire rope are both fixed on the rope winding wheel, and the first steel wire rope and the second steel wire rope are respectively passed through the front ends of the two extension arms into the extension arm cavity after being guided by the first guide wheel assembly, the second guide wheel assembly and the third guide wheel assembly; the other ends of the first steel wire rope and the second steel wire rope are respectively connected to the middle part of a transfer rope, and the two free ends of the transfer rope are connected to the two sides of the rigid tensioning assembly after being guided by the fourth guide wheel assembly arranged at the rear end of the extension arm;

[0014] The output shaft of the motor drive device is connected to the rope winding wheel, and is used to drive the rope winding wheel to rotate to release the rope or recycle the rope;

[0015] When the base plate assembly and the extension arm are in a folded state, the base plate assembly and the extension arm are respectively locked by a clamping piece; when the base plate assembly needs to be unfolded, the clamping piece on the extension arm is unlocked, and the two extension arms can be unfolded under the action of their own rebound force to form the guide support required for the unfolding of the base plate assembly; after the extension arm is fully unfolded and the clamping piece on the base plate assembly is unlocked, the base plate assembly can be unfolded in sequence and orderly under the action of the motor drive device and the pulley assembly to form a solar wing surface.

[0016] Furthermore, the motor drive device, the rope winding wheel, the first guide wheel assembly and the second guide wheel assembly are arranged on a side bottom plate, and the first guide wheel assembly and the second guide wheel assembly are located at an upper edge of the side bottom plate;

[0017] The first guide wheel assembly and the second guide wheel assembly each include three guide wheels, wherein the rotation surface of one guide wheel is parallel to the rotation surface of the rope winding wheel, and the rotation surfaces of the other two guide wheels are perpendicular to the rotation surface of the rope winding wheel;

[0018] The third guide wheel assembly includes a plurality of guide wheels arranged on the outer wall of the inner rigid base plate and two guide wheels arranged on the bottom plate on the other side;

[0019] The first steel wire rope is guided by the first guide wheel assembly and then penetrates into the extension arm cavity from the front end of one extension arm; the second steel wire rope is guided by the second guide wheel assembly and the third guide wheel assembly and then penetrates into the extension arm cavity from the front end of the other extension arm.

[0020] Furthermore, a U-shaped notch is provided in the middle of a side wall at the rear end of the extension arm;

[0021] The connection position between the first steel wire rope, the second steel wire rope and the transfer rope is located in the extension arm cavity to avoid being stuck with the U-shaped notch.

[0022] Further, the fourth guide wheel assembly includes two guide wheel groups, and the two guide wheel groups are symmetrically arranged on both sides of the opening end of the U-shaped notch of the extension arm;

[0023] The two free ends of the transfer rope are respectively wound around the guide wheel group on the same side, and are fixed to the two sides of the rigid tensioning assembly after being guided by the guide wheel group.

[0024] Further, the flexible tensioning assembly includes a flexible pull ring and a flexible pull rope;

[0025] The flexible pull ring is provided with connecting rings on both sides, and the side wall of the flexible substrate is connected to the connecting ring on one side of the flexible pull ring through a flexible pull rope;

[0026] Both sides of adjacent flexible pull rings are connected by flexible pull ropes, and both ends of the flexible pull ropes are fixed on the connecting rings on the same side.

[0027] Furthermore, a flexible tensioning component is provided every two flexible substrates.

[0028] Furthermore, the flexible pull rope is made of polyimide rope.

[0029] Furthermore, the rigid tensioning assembly comprises a rigid tensioning ring and a rigid support rod, and two ends of the rigid support rod are respectively fixedly connected to the side wall of the rigid tensioning ring and the side wall of the outer rigid base plate.

[0030] Further, the motor drive device includes a motor and a reduction assembly, and the reduction assembly includes a primary reduction member and a secondary reduction member connected in sequence;

[0031] The first-stage reduction gear is a harmonic reducer, and the second-stage reduction gear is a bevel gear reducer;

[0032] The output shaft of the secondary reduction member is connected to the center of the rope winding wheel.

[0033] Furthermore, all guide wheels adopt an embedded ball bearing structure.

[0034] The advantages of the present invention are:

[0035] 1. The flexible solar wing retractable and deployable mechanism of the present invention comprises an extension arm and a rope pulley assembly arranged on both sides of the base assembly.

[0036] The extension arm automatically unfolds under its own rebound to form a pod rod mechanism, providing rail support for the substrate assembly to unfold. Under the action of the drive device and the pulley assembly, the substrate assembly unfolds in sequence along the one-dimensional rail formed by the extension arm; by unfolding the extension arm and the substrate assembly in sequence, the mutual interference between the extension arm and the substrate assembly when unfolded at the same time is avoided, which effectively reduces the complexity of the flexible substrate unfolding and improves the unfolding reliability; the winding extension arm can lower the satellite installation height after being folded, so that the storage ratio of the entire system is high, meeting the size requirements of the stacked satellite installation.

[0037] 2. In the present invention, a group of flexible tensioning components is arranged every two flexible substrates, and the side walls of the flexible substrates are connected to the extension arms through the flexible tensioning components, so that the flexible substrates can be laterally tensioned through the flexible tensioning components during the unfolding process to maintain a certain rigidity; the side walls of the outer rigid substrates are connected to the side walls of the extension arms through the rigid tensioning components, and the rope tension is maintained by the self-locking torque of the driving motor during the unfolding process, which together with the flexible tensioning mechanism and the rigid tensioning mechanism ensure that the entire solar wing surface has a certain unfolding stiffness in the unfolded state, thereby greatly improving the unfolding fundamental frequency of the large-size flexible solar wing.

[0038] 3. When the size of the solar wing is expanded, the folding and unfolding mechanism of the present invention is used, which only increases the length of the self-resilient extension arm. The diameter after winding does not increase significantly, and the folded volume of the entire solar wing will not increase significantly. The size expandability is better than that of the solar wing with a traditional truss-type unfolding mechanism, and it is more suitable for various giant constellations. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0040] Figure 1It is a schematic diagram of the structure in which the extension arm of the unfolding mechanism of the present invention is fully unfolded, and the base plate assembly is not unfolded;

[0041] Figure 2 yes Figure 1 The local enlarged schematic diagram of point I in the middle;

[0042] Figure 3 yes Figure 1 A partial enlarged schematic diagram of position II in the middle;

[0043] Figure 4 yes Figure 1 A partial enlarged schematic diagram of point III in the middle;

[0044] Figure 5 It is a partial schematic diagram of the outer side of the bottom plate in the unfolding mechanism of the present invention;

[0045] Figure 6 yes Figure 5 A partial enlarged schematic diagram of position IV in the middle;

[0046] Figure 7 yes Figure 5 A partial enlarged schematic diagram of the middle V;

[0047] Figure 8 is a schematic structural diagram of the deployment mechanism of the present invention in a fully deployed state, wherein the extension arm and the base plate assembly are both in the deployed state;

[0048] Fig. 9 yes Figure 8 A partial enlarged schematic diagram of the middle VI;

[0049] Fig.10 yes Figure 8 A partial enlarged schematic diagram of point VII in the middle;

[0050] Fig.11 It is a schematic diagram of the basic connection between the tensioning mechanism, the flexible substrate and the external rigidity;

[0051] Fig.12 yes Fig.11 Schematic diagram of the flexible pull ring structure;

[0052] Fig.13 yes Fig.11 Schematic diagram of the medium rigid tensioning ring and rigid support rod structure.

[0053] Explanation of the figure numbers: 1-base plate assembly, 101-inner rigid base plate, 102-outer rigid base plate, 103-flexible base plate, 2-extension arm, 3-motor, 4-deceleration assembly, 5-rope winding wheel, 6-first steel wire rope, 7-second steel wire rope, 8-first guide wheel assembly, 9-second guide wheel assembly, 10-third guide wheel assembly, 11-flexible pull ring, 12-flexible pull rope, 13-transfer rope, 14-rigid tensioning ring, 15-rigid support rod, 16-fourth guide wheel assembly, 17-base plate. DETAILED DESCRIPTION

[0054] Embodiments of the present invention are described in detail below. The embodiments are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0055] Reference Figure 1-Figure 13 A flexible solar wing retractable and deployable mechanism based on a pod pole, the flexible solar wing comprises a substrate assembly 1, the substrate assembly 1 comprises an inner rigid substrate 101, an outer rigid substrate 102, and a plurality of flexible substrates 103 sequentially stacked between the inner rigid substrate and the outer rigid substrate. The flexible substrate is compressed by forming a sandwich structure with the inner rigid substrate and the outer lower rigid plate, and a compression bushing is provided on the inner rigid substrate and the outer rigid substrate, which is compressed by a pre-tightening force provided by a hot knife or a memory alloy expander;

[0056] The deployment mechanism includes a base plate 17, a motor drive device, a rope pulley assembly, a tensioning mechanism and a deployment arm;

[0057] The two bottom plates 17 are symmetrically arranged on both sides of the substrate assembly, and the bottom plates are coplanar with the surface of the substrate assembly;

[0058] The front ends of the two extension arms 2 are symmetrically fixed on the bottom plate, and the extension direction of the extension arms is the same as the extension direction of the base plate assembly.

[0059] The tensioning mechanism includes a rigid tensioning component, a plurality of flexible tensioning components and a flexible pull rope 12, and the flexible tensioning component and the rigid tensioning component are both mounted on the extension arm body; the flexible tensioning component is fixedly connected to the side wall of the flexible substrate, and adjacent flexible tensioning components and flexible tensioning components and rigid tensioning components are connected through the flexible pull rope 12; the rigid tensioning component is fixedly connected to the side wall of the outer rigid substrate 102.

[0060] The rope wheel assembly includes a rope winding wheel 5, a first steel wire rope 6, a second steel wire rope 7, a first guide wheel assembly 8, a second guide wheel assembly 9, a third guide wheel assembly 10, a transfer rope 13 and a fourth guide wheel assembly 16. A motor drive device, a rope winding wheel 5, a first guide wheel assembly 8 and a second guide wheel assembly 9 are provided on one side bottom plate, and the first guide wheel assembly and the second guide wheel assembly are located at the upper edge of the side bottom plate; the first guide wheel assembly 8 and the second guide wheel assembly 9 each include three guide wheels, the rotating surface of one guide wheel is parallel to the rotating surface of the rope winding wheel, and the rotating surfaces of the other two guide wheels are perpendicular to the rotating surface of the rope winding wheel. The third guide wheel assembly 10 includes a plurality of guide wheels arranged on the outer wall of the inner rigid base plate and two guide wheels arranged on the other side bottom plate.

[0061] The second steel wire rope 7 is guided by the second guide wheel assembly 9 and the third guide wheel assembly 10 and then passes through the extension arm cavity from the front end of the other extension arm.

[0062] One end of the first steel wire rope 6 and the second steel wire rope 7 are both fixed on the rope winding wheel 5. After being guided by the first guide wheel assembly 8, the first steel wire rope 6 passes through the extension arm cavity from the front end of one of the extension arms. The other end of the first steel wire rope 6 is connected to the middle of a transfer rope 13. The two free ends of the transfer rope 13 are connected to the rigid support assembly after being guided by the fourth guide wheel assembly 16 set at the rear end of the side extension arm. The rigid support assembly is mounted on the side extension arm and fixedly connected to a side wall of the outer rigid base plate 102.

[0063] The second steel wire rope 7 passes through the front end of the other extension arm and enters the extension arm cavity after being guided by the second guide wheel assembly 9 and the third guide wheel assembly 10. The other end of the second steel wire rope 7 is connected to the middle of a transfer rope 13. The two free ends of the transfer rope 13 are connected to the rigid support assembly after being guided by the fourth guide wheel assembly 16 arranged at the other rear end of the extension arm on this side. The rigid support assembly is mounted on the extension arm on this side and is fixedly connected to the other side wall of the outer rigid base plate 102.

[0064] Preferably, the other ends of the first steel wire rope 6 and the second steel wire rope 7 are connected to the transfer rope 13 through a metal crimping ring. Since a U-shaped notch is provided on one side wall at the rear end of the extension arm, in order to avoid the rope crimping position and the U-shaped notch from getting stuck during the unfolding of the base assembly, the crimping position is located in the extension arm cavity.

[0065] The fourth guide wheel assembly 16 includes two guide wheel groups, which are symmetrically arranged on both sides of the opening end of the U-shaped notch of the extension arm; the two free ends of the transfer rope 13 are respectively wound around the guide wheel groups on the same side, and are fixed to both sides of the rigid tensioning assembly after being guided by the guide wheel groups.

[0066] In order to reduce the friction resistance between the wire rope and the guide wheel during the sliding process, the guide wheels in all guide wheel assemblies of the present invention adopt an embedded ball bearing structure.

[0067] The motor drive device includes a motor 1 and a reduction assembly 2, wherein the reduction assembly 2 includes a primary reduction member and a secondary reduction member. The motor uses a stepper motor as a power source, the primary reduction member uses a harmonic reducer, and the secondary reduction member uses a bevel gear reducer, which can achieve steering while reducing speed. The motor drive device is used to transmit the motor torque to the rope winding wheel 3, driving the rope winding wheel 3 to rotate to release the rope or recycle the rope.

[0068] Reference Figure 11-13 The tensioning mechanism includes a rigid tensioning assembly, a plurality of flexible tensioning assemblies and a flexible pull rope, and the flexible tensioning assembly and the rigid tensioning assembly are both mounted on the extension arm body; the flexible tensioning assembly is fixedly connected to the side wall of the flexible substrate, and the adjacent flexible tensioning assemblies and the flexible tensioning assemblies and the rigid tensioning assemblies are connected through the flexible pull rope 12; the rigid tensioning assembly is fixedly connected to the side wall of the outer rigid substrate. After the extension arm and the substrate assembly are unfolded, the inner rigid substrate 101, the extension arms 2 on both sides, the outer rigid substrate 102, the rigid tensioning ring 14 and the rigid strut 15 work together to form a quadrilateral rigid frame of the entire solar wing, thereby improving the overall rigidity of the solar wing.

[0069] The flexible tensioning assembly includes a flexible pull ring 11 and a flexible pull rope 12; the flexible pull ring 11 is provided with connecting rings on both sides, and the side wall of the flexible substrate 103 is connected to the connecting ring on one side of the flexible pull ring 11 through the flexible pull rope 12; both sides of adjacent flexible pull rings 11 are connected by flexible pull ropes 12, and the two ends of the flexible pull ropes are fixed on the connecting rings on the same side. In order to enable the flexible substrates to be unfolded smoothly in sequence, a flexible tensioning assembly is provided for every two flexible substrates. Preferably, the flexible pull rope is a polyimide rope.

[0070] The rigid tensioning assembly includes a rigid tensioning ring 14 and a rigid strut 15, and the two ends of the rigid strut 15 are respectively fixedly connected to the side wall of the rigid tensioning ring 14 and the side wall of the outer rigid base plate 102. The rigid strut 15 is used to adjust the tension between the rigid tensioning ring 14 and the outer rigid base plate 102. After the extension arm and base plate assembly are unfolded, the inner rigid base plate 101, the extension arms 2 on both sides, the outer rigid base plate 102, the rigid tensioning ring 14 and the rigid strut 15 work together to form a quadrilateral rigid frame of the entire solar wing, thereby improving the overall rigidity of the solar wing.

[0071] The rigid support rod 15 includes a connecting rod, a first connecting plate and a second connecting plate arranged at both ends of the connecting rod; the first connecting plate is L-shaped and fixedly connected to the side wall of the rigid support rod;

[0072] A rectangular slot is provided on the second connecting plate, and a clamping portion matched with the rectangular slot is provided on the side wall of the outer rigid substrate 102. The slot is matched with the clamping portion and fixed by bolts.

[0073] When the base assembly and the extension arm are in the folded state, the base assembly and the extension arm are locked by the clamping parts respectively. At this time, the tensioning mechanism is located at the root of the front end of the extension arm. When the solar wing needs to be unfolded, the clamping parts on the extension arm are unlocked, and the extension arm is unfolded first under the action of its own rebound. When the extension arm is unfolded into place, the two extension arms form a pod rod structure to provide the guide support required for the base assembly to unfold. Figure 1 , at this time, the two extension arms are fully extended, but the base plate assembly is not extended.

[0074] After the extension arm is fully extended and the clamping piece on the base assembly is unlocked, the motor 3 starts working, and the first steel wire rope 6 and the second steel wire rope 7 move along the extension arm under the action of the motor and each guide wheel assembly to collect the ropes, driving the transfer rope at the rear end of the extension arm to pull the rigid tensioning ring 14 and the rigid strut 15 to slide toward the rear end of the extension arm, and the outer rigid base plate fixedly connected to the rigid strut 15 moves outward to extend. When the outer rigid base plate is extended into place, the flexible pull rope 12 between the flexible base plates is gradually tightened, driving the flexible pull ring 11 and the flexible base plates fixed to the flexible pull ring 11 to extend in sequence. In this process, the rigid bracket connected to the outermost rigid base plate can limit the lateral swing of the free end of the extension arm, so that the extension arm maintains a certain lateral stiffness; the tensioning pull rope connected to the flexible base plate can transfer the rigidity of the extension arm to the flexible base plate, so that the flexible base plate also has a certain stiffness. Forming the solar wing surface. See Figure 8 , at this point, the base plate assembly is fully unfolded.

[0075] When the flexible solar wing needs to be folded, the motor drive device drives the rope pulley assembly to release the rope, and the flexible pull rope between the flexible substrates near the front end of the extension arm is gradually tightened, which in turn drives the flexible pull ring 11 and the flexible substrates fixed to the flexible pull ring 11 to be folded toward the front end of the extension arm in order, until all the flexible substrates are folded and stacked between the inner rigid substrate and the outer rigid substrate, and the substrate assembly is folded and locked by the clamp. Finally, the two extension arms are wound and folded to both sides of the substrate assembly and locked by a clamp.

[0076] The flexible solar wing retractable and deployable mechanism of the present invention can realize sequential deployment or folding of the extension arm and the flexible solar wing, avoiding interference when the extension arm and the solar wing are deployed at the same time. After folding, the extension wing and the solar wing are each small in size, meeting the size requirements of stacked satellite installations, and are also suitable for other giant constellations.

[0077] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should be included in the protection scope of the present invention.

Claims

1. A flexible solar wing folding and unfolding mechanism based on pod poles, characterized in that: The flexible solar wing comprises a substrate assembly, wherein the substrate assembly comprises an inner rigid substrate, an outer rigid substrate, and a plurality of flexible substrates stacked between the outer rigid substrate and the inner rigid substrate; The deployment mechanism includes a base plate, a motor drive device, a rope pulley assembly, a tensioning mechanism and a self-rebounding extension arm; The two bottom plates are symmetrically arranged on both sides of the substrate assembly, and the bottom plates are coplanar with the surface of the substrate assembly; The front ends of the two extension arms are symmetrically fixed on the bottom plate, and the extension direction of the extension arms is the same as the extension direction of the base plate assembly; The tensioning mechanism includes a rigid tensioning component, a plurality of flexible tensioning components and a flexible pull rope, wherein the flexible tensioning component and the rigid tensioning component are both mounted on the extension arm body; the flexible tensioning component is fixedly connected to the side wall of the flexible substrate, and adjacent flexible tensioning components and flexible tensioning components and rigid tensioning components are connected through the flexible pull rope; the rigid tensioning component is fixedly connected to the side wall of the outer rigid substrate; The rope wheel assembly includes a rope winding wheel, a first steel wire rope, a second steel wire rope, a first guide wheel assembly, a second guide wheel assembly, a third guide wheel assembly, a transfer rope and a fourth guide wheel assembly; One end of the first steel wire rope and the second steel wire rope are both fixed on the rope winding wheel, and the first steel wire rope and the second steel wire rope are respectively passed through the front ends of the two extension arms into the extension arm cavity after being guided by the first guide wheel assembly, the second guide wheel assembly and the third guide wheel assembly; the other ends of the first steel wire rope and the second steel wire rope are respectively connected to the middle part of a transfer rope, and the two free ends of the transfer rope are connected to the two sides of the rigid tensioning assembly after being guided by the fourth guide wheel assembly arranged at the rear end of the extension arm; The output shaft of the motor drive device is connected to the rope winding wheel, and is used to drive the rope winding wheel to rotate to release the rope or recycle the rope; When the base plate assembly and the extension arm are in a folded state, the base plate assembly and the extension arm are locked by a clamping member respectively; when the base plate assembly needs to be unfolded, the clamping member on the extension arm is unlocked, and the two extension arms can be unfolded under the action of their own resilience to form a guide support required for the unfolding of the base plate assembly; After the extension arm is fully extended and the clamping member on the base plate assembly is unlocked, the base plate assembly can be sequentially and orderly extended under the action of the motor drive device and the pulley assembly to form a solar wing surface.

2. The flexible solar wing folding and unfolding mechanism based on pod poles according to claim 1 is characterized in that: The motor drive device, the rope winding wheel, the first guide wheel assembly and the second guide wheel assembly are arranged on a side bottom plate, and the first guide wheel assembly and the second guide wheel assembly are located at the upper edge of the side bottom plate; The first guide wheel assembly and the second guide wheel assembly each include three guide wheels, wherein the rotation surface of one guide wheel is parallel to the rotation surface of the rope winding wheel, and the rotation surfaces of the other two guide wheels are perpendicular to the rotation surface of the rope winding wheel; The third guide wheel assembly includes a plurality of guide wheels arranged on the outer wall of the inner rigid base plate and two guide wheels arranged on the bottom plate on the other side; The first steel wire rope is guided by the first guide wheel assembly and then penetrates into the extension arm cavity from the front end of one extension arm; the second steel wire rope is guided by the second guide wheel assembly and the third guide wheel assembly and then penetrates into the extension arm cavity from the front end of the other extension arm.

3. The flexible solar wing folding and unfolding mechanism based on pod poles according to claim 1 is characterized in that: A U-shaped notch is provided in the middle of one side wall at the rear end of the extension arm; The connection position between the first steel wire rope, the second steel wire rope and the transfer rope is located in the extension arm cavity to avoid being stuck with the U-shaped notch.

4. The flexible solar wing folding and unfolding mechanism based on pod poles according to claim 3 is characterized in that: The fourth guide wheel assembly includes two guide wheel groups, and the two guide wheel groups are symmetrically arranged on both sides of the opening end of the U-shaped notch of the extension arm; The two free ends of the transfer rope are respectively wound around the guide wheel group on the same side, and are fixed to the two sides of the rigid tensioning assembly after being guided by the guide wheel group.

5. The flexible solar wing folding and unfolding mechanism based on pod poles according to claim 1 is characterized in that: The flexible tensioning assembly includes a flexible pull ring and a flexible pull rope; The flexible pull ring is provided with connecting rings on both sides, and the side wall of the flexible substrate is connected to the connecting ring on one side of the flexible pull ring through a flexible pull rope; Both sides of adjacent flexible pull rings are connected by flexible pull ropes, and both ends of the flexible pull ropes are fixed on the connecting rings on the same side.

6. The flexible solar wing folding and unfolding mechanism based on pod poles according to claim 5 is characterized in that: A flexible tensioning component is arranged every two flexible substrates.

7. The flexible solar wing folding and unfolding mechanism based on pod poles according to claim 6 is characterized in that: The flexible draw cord is a polyimide rope.

8. The flexible solar wing folding and unfolding mechanism based on pod poles according to claim 7 is characterized in that: The rigid tensioning assembly comprises a rigid tensioning ring and a rigid support rod, and two ends of the rigid support rod are respectively fixedly connected to the side wall of the rigid tensioning ring and the side wall of the outer rigid base plate.

9. The flexible solar wing folding and unfolding mechanism based on pod poles according to claim 1 is characterized in that: The motor drive device comprises a motor and a reduction assembly, wherein the reduction assembly comprises a primary reduction member and a secondary reduction member connected in sequence; The first-stage reduction gear is a harmonic reducer, and the second-stage reduction gear is a bevel gear reducer; The output shaft of the secondary reduction member is connected to the center of the rope winding wheel.

10. The flexible solar wing folding and unfolding mechanism based on pod poles according to any one of claims 1 to 9, characterized in that: All guide wheels adopt built-in ball bearing structure.

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