A space debris capture mechanism with bionic adhesion and racemization function

Abstract

The present invention relates to the field of space debris capture technology, and more specifically, to a space debris capture mechanism with a biomimetic adhesion derotation function, comprising a drive assembly and a capture assembly, the drive assembly being connected to the capture assembly and configured to drive the capture assembly to capture space debris; and an adhesion layer being provided on the portion of the capture assembly that contacts space debris, configured to adhere to the space debris. The present invention overcomes the shortcomings of the prior art in which contact between space debris and the derotation mechanism results in multiple, substantial rigid impacts, potentially damaging the derotation mechanism or causing further fragmentation of the space debris. By providing an adhesion layer to adhere to the space debris, the adhesion layer slows the movement of the space debris, reduces mutual impact between the space debris and the capture assembly, and avoids damage to the capture assembly and the generation of secondary space debris.

Description

Technical Field

[0001] The present invention relates to the technical field of space debris capture, and more particularly to a space debris capture mechanism with bionic adhesion and racemization functions. Background Art

[0002] Human spacecraft activities have created a large amount of space debris in low-Earth orbit. This debris travels at high speeds, posing a significant threat to orbiting spacecraft. Collisions between high-speed debris and spacecraft can cause structural damage, and in severe cases, even render the entire spacecraft useless. Therefore, timely removal of all types of debris from orbit is crucial. Most of this debris is non-cooperative, exhibiting rotational motion, making capture extremely challenging. To capture this type of rotating debris, despinning is necessary before capture can be performed using capture equipment. Despinning slows the debris's rotational speed to prevent excessive interference with the satellite during capture.

[0003] Current methods for despinning space debris include contact despinning and non-contact despinning. Contact despinning involves attaching a despinning tool to the end of a robotic arm, which applies a despinning force to the target. Non-contact despinning avoids direct collision with the target and maintains a safe distance from it during the despinning process, minimizing the risk of collision.

[0004] For example, a prior art document discloses a mechanism for capturing and despinning spinning space debris, comprising a rotating portion and a fixed portion. The rotating portion's front end housing is equipped with several underactuated "fingers," each with several rotating joints equipped with torsion springs. Each finger is pulled by a rope, forming an underactuated mechanism capable of bending and adapting to the shape of the contact.

[0005] The aforementioned derotation method is contact derotation. While the finger mechanism can reduce the rotational speed of space debris, upon contact, the debris will experience multiple, significant, rigid impacts within a short period of time until it is fully grasped. These impacts can damage the capture mechanism and cause the debris to further break into smaller fragments, leading to collisions between the smaller fragments, thus increasing the risk of collisions in space. Summary of the Invention

[0006] In response to the problem in the above-mentioned prior art that space debris will produce multiple large rigid impacts on the derotation mechanism after contact with the derotation mechanism, which may damage the derotation mechanism or cause further splitting of the space debris, the present invention provides a space debris capture mechanism with bionic adhesion derotation function, which can reduce the mutual impact between space debris and the capture mechanism and achieve the purpose of derotation.

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0008] A space debris capture mechanism with a bionic adhesion de-rotation function comprises a drive component and a capture component, wherein the drive component is connected to the capture component and is used to drive the capture component to capture space debris; a portion of the capture component that is used to contact space debris is provided with an adhesion layer, and the adhesion layer is used to adhere to the space debris.

[0009] The capturing component may capture the space debris by grabbing it with a manipulator or by enclosing the space debris in a closed cavity.

[0010] In this technical solution, after the high-speed rotating space debris collides with the adhesion layer for the first time, the debris is slowed by the resistance and friction of the adhesion layer. As the space debris repeatedly collides with the adhesion layer, the debris's spin gradually weakens due to the adhesion and friction of the adhesion layer, eventually reaching a relative static state with the adhesion layer and adhering to it, thus completing the derotation of the space debris. The drive assembly then activates the capture assembly to capture the stationary space debris. The adhesion layer hinders the space debris's rotation, gradually slowing its motion and reducing the impact between the space debris and the capture assembly, thereby preventing damage to the capture assembly and the generation of secondary space debris.

[0011] The surface of the adhesion layer can be coated with glue, a sticky material, or provided with a plurality of bristles. Preferably, a plurality of bristles are evenly distributed on the surface of the adhesion layer, and the bristles are used to contact the space debris. When the bristles come into contact with the space debris, the bristles can enter the tiny depressions on the surface of the space debris and form microscopic van der Waals forces with the space debris, so that the space debris adheres tightly to the bristles. Multiple bristles can increase the contact area with the space debris, thereby generating a greater adhesion force on the space debris. Compared with glue or other sticky materials, the bristles can adhere to and detach from space debris multiple times, and have better reusability. Moreover, the adhesion effect of the bristles is not limited to smooth surfaces. It can also achieve good adhesion on rough or irregular surfaces of space debris, and has stronger adaptability.

[0012] Preferably, the bristles are provided with an inclined surface for contacting space debris, the inclined surface extending outward from the surface of the adhesion layer. The inclined surface can increase the contact area between the bristles and the space debris, thereby improving the adhesion effect on the space debris.

[0013] Because bristles with too high a density will interfere with each other, the overall adhesion force will be dispersed and the adhesion effect of each bristle will be reduced. Bristles with too low a density cannot provide sufficient adhesion force, resulting in poor adhesion of the entire adhesive layer. Therefore, preferably, the density of the bristles is 1100 / cm 2 ~1300 pieces / cm 2 Bristle density within this range minimizes competition between bristles, allowing each bristle to fully exert its adhesive effect. It also maximizes the contact area between the bristles and space debris, increasing the microscopic van der Waals forces and improving the overall adhesion of the adhesion layer to space debris.

[0014] The bristles can be made of polymer materials such as polyethylene, polypropylene, and polyurethane; silicone materials; fiber materials such as nylon and fiberglass; and metal materials such as copper and zinc. Preferably, the bristles are made of polydimethylsiloxane. Polydimethylsiloxane has excellent adhesion properties, allowing for strong adhesion to the surface of space debris. It also exhibits good flexibility and elasticity, adapting to various surface shapes and providing relatively stable support. Furthermore, polydimethylsiloxane has excellent wear resistance, extending the service life of the adhesive layer.

[0015] Preferably, the capture assembly includes an intermediate panel and a plurality of shell petal assemblies rotatably connected to the intermediate panel, and the drive assembly is used to drive the shell petal assembly to rotate relative to the intermediate panel so that the ends of the shell petal assemblies move closer to or away from each other. When the ends of the shell petal assemblies move closer to each other, the shell petal assembly and the intermediate panel form a receiving cavity for accommodating space debris, and the adhesion layer is provided on the inner wall of the receiving cavity. After the space debris adheres to the surface of the adhesion layer, the drive assembly drives the shell petal assembly to rotate relative to the intermediate panel so that the ends of the shell petal assemblies move closer to each other, and finally surround the space debris in the receiving cavity. The receiving cavity can accommodate space debris of various shapes and sizes. Regardless of the shape, size or surface characteristics of the space debris, the receiving cavity can successfully capture it. Therefore, such a capture assembly has higher versatility and capture success rate.

[0016] Preferably, the shell petal assemblies are distributed circumferentially on the middle panel; the drive assembly includes a driver provided with a fixed portion and a telescopic assembly, one end of the telescopic assembly is connected to the fixed portion, and the other end is connected to the shell petal assembly; the driver is used to drive the telescopic assembly to extend and retract, and when the telescopic assembly is extended, the ends of the shell petal assemblies move closer to each other, and when the telescopic assembly is shortened, the ends of the shell petal assemblies move away from each other. It can be understood that when the telescopic assembly is extended, one end of the telescopic assembly applies a thrust to the shell petal assembly, and this thrust can push the shell petal assembly to rotate toward the inner side of the middle panel, so that the ends of the shell petal assembly move closer to each other, and finally form a accommodating cavity with the middle panel. Driving the shell petal assembly to expand or close by the extension and retraction of the telescopic assembly is more flexible and safer, and is also conducive to simplifying the structure of the entire capture assembly.

[0017] It can be understood that the inner side of the middle panel and the shell petal assembly refers to the side where the accommodating cavity is located, and the outer side refers to the side opposite to the accommodating cavity.

[0018] Preferably, the telescopic assembly includes a first joint, a second joint, and a first pusher, wherein the first joint and the second joint are rotationally connected and both are rotationally connected to the fixed portion and the first pusher, respectively, and the first pusher is rotationally connected to the outer side of the shell petal assembly; the rotation axis of the first joint relative to the fixed portion and the rotation axis of the second joint relative to the first pusher are both perpendicular to the rotation axis of the second joint relative to the first joint, and the rotation axis of the first pusher relative to the shell petal assembly is perpendicular to the rotation axis of the second joint relative to the first pusher; the driver is used to drive the intermediate panel to rotate, the rotation axis of the intermediate panel being perpendicular to the rotation axis of the first joint relative to the fixed portion, and when the intermediate panel rotates, the second joint rotates relative to the first joint to extend or shorten the telescopic assembly. When the driver drives the intermediate panel to rotate, the second joint rotates relative to the first joint, and at the same time, the first joint rotates relative to the fixed portion, the second joint rotates relative to the first pusher, and the first pusher rotates relative to the shell petal assembly, thereby causing the telescopic assembly to reach an extended state; during the extension of the telescopic assembly, the second joint applies a driving force to the shell petal assembly through the first pusher, thereby driving the shell petal assembly to rotate toward the inner side of the intermediate panel. By driving the middle panel to rotate, the ends of the shell petal assemblies can be brought closer to each other. Such a driving assembly structure and its driving method are more flexible and simple, which not only helps to reduce the weight of the entire capture assembly and reduce the manufacturing cost and maintenance cost of the capture assembly, but also makes it easier to control the capture assembly movement, making the task more smoothly.

[0019] Preferably, the shell valve assembly includes a first panel and a second panel rotatably connected to the middle panel, the middle panel, the first panel and the second panel are all regular pentagonal panels, one side of the first panel is rotatably connected to one side of the middle panel, the second panel is located on the side of the first panel opposite to the middle panel, and is rotatably connected to the first panel; one side of the second panel is connected to a third panel in the shape of an isosceles triangle, and the third panel is located on the side of the second panel opposite to the first panel; the first pushing member is rotatably connected to the middle part of the outer side of the first panel.

[0020] Furthermore, the telescopic assembly also includes a third joint, a fourth joint and a second pushing member, the third joint is rotatably connected to the fourth joint and both are rotatably connected to the first pushing member and the second pushing member respectively; the second pushing member is rotatably connected to the middle part of the outer side of the second panel; the rotation axis of the third joint relative to the first pushing member and the rotation axis of the fourth joint relative to the second pushing member are both perpendicular to the rotation axis of the fourth joint relative to the third joint; when the middle panel rotates, the first panel, the second panel, the third panel and the middle panel can form a closed accommodating cavity.

[0021] During the rotation of the middle panel, the first joint rotates relative to the fixed portion, the first joint rotates relative to the second joint, the second joint rotates relative to the first pusher, and the first pusher rotates relative to the first panel, so that the telescopic assembly is extended, and the first panel is pushed to rotate toward the inner side of the middle panel by the first pusher; at the same time, the third joint rotates relative to the first pusher, the third joint rotates relative to the fourth joint, the fourth joint rotates relative to the second pusher, and the second pusher rotates relative to the second panel, so that the telescopic assembly is further extended, and the second panel is pushed to rotate toward the inner side of the first panel by the second pusher, and finally the third panels are brought closer to each other. The first panel, the second panel, and the middle panel are unified into regular pentagonal panels, which are easier to produce and process, and the accommodating cavity surrounded by such first panel, second panel, third panel, and middle panel is better sealed, which can greatly reduce the probability of debris escaping the accommodating cavity.

[0022] Preferably, the outer sides of the middle panel, the first panel, the second panel, and the third panel are each provided with a plurality of weight-reducing grooves, with reinforcing ribs formed between adjacent weight-reducing grooves on the same panel. The reinforcing ribs ensure sufficient strength for each panel, while the provision of multiple weight-reducing grooves helps reduce the weight of each panel, making the entire capture assembly even lighter.

[0023] Beneficial effects of the present invention:

[0024] (1) It can avoid damage to the capture component and the generation of secondary space debris. The adhesive layer can be used to produce an adhesive effect on the space debris, thereby slowing down the movement of the space debris and reducing the mutual impact between the space debris and the capture component.

[0025] (2) It has a higher adaptability to space debris of various sizes and shapes. The adhesion layer is equipped with multiple bristles. When space debris comes into contact with the bristles, microscopic van der Waals forces are formed between the bristles to achieve an adhesion effect. The bristles can adapt to space debris of different sizes and with different surface shapes, and have a higher adaptability.

[0026] (3) The de-racemization method is simple. When space debris collides with the bristle array of the adhesion layer, an adhesion effect is generated. The adhesion of the adhesion layer is used to slow down the movement of space debris and ultimately achieve the purpose of de-racemization. There is no need to manipulate complex mechanical structures to exert resistance on the space debris.

[0027] (4) The capture component has high versatility and reliability. The capture component can capture space debris of various shapes, including sheet-shaped, rod-shaped, spherical and other complex structures, and the space debris is not easy to escape.

[0028] (5) The capture assembly is driven by a simple method. Only one actuator is needed to rotate the middle panel, which can drive the shell petal assembly to close or expand, thereby capturing space debris. This drive method is flexible and simple, easy to operate, and conducive to the smooth progress of the capture mission. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a schematic structural diagram of the adhesive layer side of a space debris capture mechanism with bionic adhesive racemization function;

[0030] Figure 2 is a schematic structural diagram of the adhesion layer;

[0031] Figure 3 is a diagram capturing one of the perspectives of the outside of the component;

[0032] Figure 4 It is a schematic diagram of the state when the ends of the shell petal assembly are away from each other;

[0033] Figure 5 It is a schematic diagram of the state when the ends of the shell petal assembly are close to each other;

[0034] Figure 6 It is a structural diagram of the telescopic component;

[0035] Figure 7 It is a side view of a space debris capture mechanism with biomimetic adhesion and racemization function;

[0036] Figure 8 is a diagram that captures another perspective of the outside of the component.

[0037] In the accompanying drawings: 1-adhesion layer; 2-bristles; 201-inclined surface; 3-middle panel; 4-shell petal assembly; 401-first panel; 402-second panel; 403-third panel; 404-weight-reducing groove; 405-reinforcement rib; 406-accommodating cavity; 5-driver; 501-fixing part; 6-telescopic assembly; 601-first joint; 602-second joint; 603-first pusher; 604-third joint; 605-fourth joint; 606-second pusher; 7-space debris. DETAILED DESCRIPTION

[0038] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0039] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0041] Example 1

[0042] like Figures 1 to 5 The space debris capture mechanism shown has a bionic adhesion de-rotation function, including a driving component and a capturing component, wherein the driving component is connected to the capturing component and is used to drive the capturing component to capture space debris 7; the portion of the capturing component used to contact the space debris 7 is provided with an adhesion layer 1, and the adhesion layer 1 is used to adhere to the space debris 7.

[0043] Specifically, the capture assembly includes an intermediate panel 3 and a plurality of shell petal assemblies 4 rotatably connected to the intermediate panel 3. The drive assembly is used to drive the shell petal assemblies 4 to rotate relative to the intermediate panel 3 so that the ends of the shell petal assemblies 4 move closer to or away from each other. When the ends of the shell petal assemblies 4 move closer to each other, the shell petal assemblies 4 and the intermediate panel 3 form a receiving cavity 406 for accommodating the space debris 7. The inner wall of the receiving cavity 406 is provided with an adhesive layer 1. After the space debris 7 adheres to the surface of the adhesive layer 1, the drive assembly drives the shell petal assemblies 4 to rotate relative to the intermediate panel 3 so that the ends of the shell petal assemblies 4 move closer to each other, ultimately enclosing the space debris 7 within the receiving cavity 406. The receiving cavity 406 can accommodate space debris 7 of various shapes and sizes. Regardless of the shape, size or surface characteristics of the space debris 7, the receiving cavity 406 can successfully capture it. Therefore, such a capture assembly has a higher versatility and capture success rate.

[0044] Specifically, the surface of the adhesive layer 1 is evenly distributed with a plurality of bristles 2, which are used to contact the space debris 7. When the bristles 2 come into contact with the space debris 7, they can enter the tiny depressions on the surface of the space debris 7 and form microscopic van der Waals forces with the space debris 7, causing the space debris 7 to adhere tightly to the bristles 2. The multiple bristles 2 increase the contact area with the space debris 7, thereby generating a greater adhesion force on the space debris 7. Compared to glue or other sticky materials, the bristles 2 can adhere to and detach from the space debris 7 multiple times, having greater reusability. Moreover, the adhesion effect of the bristles 2 is not limited to smooth surfaces; they can also achieve good adhesion on rough or irregular surfaces of the space debris 7, making them more adaptable.

[0045] Furthermore, the bristles 2 are wedge-shaped, specifically triangular prism-shaped, and are provided with an inclined surface 201 for contacting the space debris 7. The inclined surface 201 extends outward from the surface of the adhesive layer 1. The inclined surface 201 on the wedge-shaped bristles 2 can increase the contact area between the bristles 2 and the space debris 7, thereby improving the adhesion effect on the space debris 7.

[0046] Since bristles 2 with too high a density will interfere with each other, the overall adhesion force will be dispersed and the adhesion effect of a single bristle 2 will be reduced. However, bristles 2 with too low a density cannot provide sufficient adhesion force, resulting in poor adhesion of the adhesive layer 1 as a whole. Therefore, the density of bristles 2 is 1200 pieces / cm 2 The density of bristles 2 at this level can minimize competition between bristles 2, allowing each bristle 2 to fully exert its adhesive effect. This also maximizes the contact area between bristles 2 and space debris 7, thereby increasing the microscopic van der Waals forces and improving the overall adhesion of the adhesive layer 1 to the space debris 7.

[0047] Furthermore, the bristles 2 are made of polydimethylsiloxane. Polydimethylsiloxane has excellent adhesion properties, enabling strong adhesion to the surface of space debris 7. It also exhibits good flexibility and elasticity, adapting to various surface shapes and providing relatively stable support. Furthermore, polydimethylsiloxane has excellent wear resistance, extending the service life of the adhesive layer 1.

[0048] The operating principle or workflow of this embodiment is as follows: After the high-speed rotating space debris 7 first collides with the adhesion layer 1, the space debris 7 is subjected to the resistance and friction of the adhesion layer 1, causing its movement to slow down. As the space debris 7 repeatedly collides with the adhesion layer 1, the spin state of the space debris 7 gradually weakens due to the adhesion and friction of the bristles 2. Eventually, the space debris 7 reaches a relative static state with the adhesion layer 1 and adheres to the array of bristles 2 on the adhesion layer 1, thus completing the derotation of the space debris 7. The drive assembly then drives the shell petal assembly 4 to rotate relative to the intermediate panel 3, causing the ends of the shell petal assembly 4 to move closer together and form a receiving cavity 406 between the shell petal assembly 4 and the intermediate panel 3, thereby enclosing the space debris 7 within the receiving cavity 406 and completing the capture of the space debris 7.

[0049] Beneficial effects of this embodiment:

[0050] (1) It can avoid damage to the capture component and the generation of secondary space debris. The adhesive layer can be used to produce an adhesive effect on the space debris, thereby slowing down the movement of the space debris and reducing the mutual impact between the space debris and the capture component.

[0051] (2) It has a higher adaptability to space debris of various sizes and shapes. The adhesion layer is equipped with multiple bristles. When space debris comes into contact with the bristles, microscopic van der Waals forces are formed between the bristles to achieve an adhesion effect. The bristles can adapt to space debris of different sizes and with different surface shapes, and have a higher adaptability.

[0052] (3) The de-racemization method is simple. When space debris collides with the bristle array of the adhesion layer, an adhesion effect is generated. The adhesion of the adhesion layer is used to slow down the movement of space debris and ultimately achieve the purpose of de-racemization. There is no need to manipulate complex mechanical structures to exert resistance on the space debris.

[0053] (4) The capture component has high versatility. The capture component can capture space debris of various shapes, including sheet-shaped, rod-shaped, spherical and other complex structures.

[0054] Example 2

[0055] This embodiment further explains the capture component based on the embodiment 1. Figure 1 、 Figures 3 to 8As shown, the shell petal assembly 4 is distributed in a circular shape on the middle panel 3; the driving assembly includes a driver 5 provided with a fixed portion 501 and a telescopic assembly 6, one end of the telescopic assembly 6 is connected to the fixed portion 501, and the other end is connected to the shell petal assembly 4; the driver 5 is used to drive the telescopic assembly 6 to extend and retract, and when the telescopic assembly 6 is extended, the ends of the shell petal assembly 4 are brought closer to each other, and when the telescopic assembly 6 is shortened, the ends of the shell petal assembly 4 are moved away from each other. It can be understood that when the telescopic assembly 6 is extended, one end of the telescopic assembly 6 applies a thrust to the shell petal assembly 4, and the thrust can push the shell petal assembly 4 to rotate in the direction close to the inner side of the middle panel 3, so that the ends of the shell petal assembly 4 are brought closer to each other, and finally form a accommodating cavity 406 with the middle panel 3. The shell petal assembly 4 is driven to expand or close by the extension and retraction of the telescopic assembly 6. This driving method is more flexible and safe, and is also conducive to simplifying the structure of the entire capture assembly.

[0056] It can be understood that the inner side of the middle panel 3 and the shell petal assembly 4 refers to the side where the accommodating cavity 406 is located, and the outer side refers to the side opposite to the accommodating cavity 406 .

[0057] Furthermore, the telescopic assembly 6 includes a first joint 601, a second joint 602 and a first pushing member 603. The first joint 601 is rotatably connected to the second joint 602 and both are rotatably connected to the fixed part 501 and the first pushing member 603 respectively. The first pushing member 603 is rotatably connected to the outer side of the shell valve assembly 4; the rotation axis of the first joint 601 relative to the fixed part 501 and the rotation axis of the second joint 602 relative to the first pushing member 603 are both perpendicular to the rotation axis of the second joint 602 relative to the first joint 601, and the rotation axis of the first pushing member 603 relative to the shell valve assembly 4 is perpendicular to the rotation axis of the second joint 602 relative to the first pushing member 603; the driver 5 is a motor of the prior art, and its output shaft is connected to the middle part of the outer side of the middle panel 3, which is used to drive the middle panel 3 to rotate. The rotation axis of the middle panel 3 is perpendicular to the rotation axis of the first joint 601 relative to the fixed part 501. When the middle panel 3 rotates, the second joint 602 and the first joint 601 rotate relative to each other to cause the telescopic assembly 6 to extend or shorten. When the driver 5 drives the middle panel 3 to rotate, the second joint 602 rotates relative to the first joint 601, and at the same time the first joint 601 rotates relative to the fixing portion 501, the second joint 602 rotates relative to the first pusher 603, and the first pusher 603 rotates relative to the shell flap assembly 4, thereby causing the telescopic assembly 6 to reach an extended state; during the extension of the telescopic assembly 6, the second joint 602 applies a driving force to the shell flap assembly 4 through the first pusher 603, thereby driving the shell flap assembly 4 to rotate toward the inner side of the middle panel 3. By driving the middle panel 3 to rotate, the ends of the shell flap assembly 4 can be brought closer to each other. Such a drive assembly structure and its drive method are more flexible and simple, which not only helps to reduce the weight of the entire capture assembly and reduce the manufacturing cost and maintenance cost of the capture assembly, but also makes it easier to control the capture assembly action, so that the task can be carried out more smoothly.

[0058] Furthermore, the shell valve assembly 4 includes a first panel 401 and a second panel 402 rotatably connected to the middle panel 3. The middle panel 3, the first panel 401 and the second panel 402 are all regular pentagonal panels. One side of the first panel 401 is rotatably connected to one side of the middle panel 3. The second panel 402 is located on the side of the first panel 401 opposite to the middle panel 3 and is rotatably connected to the first panel 401; one side of the second panel 402 is connected to a third panel 403 in the shape of an isosceles triangle, and the third panel 403 is located on the side of the second panel 402 opposite to the first panel 401; the first push member 603 is rotatably connected to the middle part of the outer side of the first panel 401.

[0059] Furthermore, the telescopic assembly 6 also includes a third joint 604, a fourth joint 605 and a second pusher 606, the third joint 604 and the fourth joint 605 are rotatably connected and both are rotatably connected to the first pusher 603 and the second pusher 606 respectively; the second pusher 606 is rotatably connected to the middle part of the outer side of the second panel 402; the rotation axis of the third joint 604 relative to the first pusher 603 and the rotation axis of the fourth joint 605 relative to the second pusher 606 are both perpendicular to the rotation axis of the fourth joint 605 relative to the third joint 604; when the middle panel 3 rotates, the first panel 401, the second panel 402, the third panel 403 and the middle panel 3 can form a closed accommodating cavity 406.

[0060] During the rotation of the middle panel 3, the first joint 601 rotates relative to the fixing portion 501, the first joint 601 and the second joint 602 rotate relative to each other, the second joint 602 rotates relative to the first pushing member 603, and the first pushing member 603 rotates relative to the first panel 401, so that the telescopic assembly 6 is extended, and the first pushing member 603 pushes the first panel 401 to rotate toward the inner side of the middle panel 3; at the same time, the third joint 604 rotates relative to the first pushing member 603, the third joint 604 and the fourth joint 605 rotate relative to each other, the fourth joint 605 rotates relative to the second pushing member 606, and the second pushing member 606 rotates relative to the second panel 402, so that the telescopic assembly 6 is further extended, and the second panel 402 is pushed to rotate toward the inner side of the first panel 401 through the second pushing member 606, and finally the third panels 403 are brought closer to each other. The first panel 401, the second panel 402 and the middle panel 3 are unified into regular pentagonal panels, which are easier to produce and process. In addition, the accommodating cavity 406 surrounded by such first panel 401, the second panel 402, the third panel 403 and the middle panel 3 has good sealing performance, which can greatly reduce the probability of debris escaping the accommodating cavity 406.

[0061] Other features, working principles and beneficial effects of this embodiment are consistent with those of embodiment 1.

[0062] Example 3

[0063] This embodiment is based on the embodiment 2, further, as shown in FIG. Figure 3 and Figure 8 As shown, the outer sides of the middle panel 3, the first panel 401, the second panel 402, and the third panel 403 are each provided with a plurality of weight-reducing grooves 404. Reinforcing ribs 405 are formed between adjacent weight-reducing grooves 404 on the same panel. The reinforcing ribs 405 ensure sufficient strength for each panel, while the provision of multiple weight-reducing grooves 404 helps reduce the weight of each panel, making the entire capture assembly even lighter.

[0064] Furthermore, the first joint 601, the second joint 602, the third joint 604 and the fourth joint 605 are all triangular in shape, which has higher stability, and a through cavity is opened in the middle of each of them, which helps to reduce the weight of the capture component.

[0065] Other features, working principles and beneficial effects of this embodiment are consistent with those of Example 2.

[0066] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description, and it is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A space debris capture mechanism with biomimetic adhesion de-racing function, comprising a drive component and a capture component, wherein the drive component is connected to the capture component and is used to drive the capture component to capture space debris; characterized in that: The portion of the capture component that is in contact with the space debris is provided with an adhesion layer (1), and the adhesion layer (1) is used to adhere to the space debris; The capture assembly comprises an intermediate panel (3) and a plurality of shell petal assemblies (4) rotatably connected to the intermediate panel (3); the drive assembly is used to drive the shell petal assemblies (4) to rotate relative to the intermediate panel (3) so that the ends of the shell petal assemblies (4) move closer to or farther away from each other; when the ends of the shell petal assemblies (4) move closer to each other, the shell petal assemblies (4) and the intermediate panel (3) form a receiving cavity (406) for receiving space debris; the adhesive layer (1) is provided on the inner wall of the receiving cavity (406); The shell petal assemblies (4) are circumferentially distributed on the middle panel (3); the driving assembly comprises a driver (5) provided with a fixed portion (501) and a telescopic assembly (6), one end of the telescopic assembly (6) is connected to the fixed portion (501), and the other end is connected to the shell petal assemblies (4); the driver (5) is used to drive the telescopic assembly (6) to telescope, and when the telescopic assembly (6) is extended, the ends of the shell petal assemblies (4) move closer to each other, and when the telescopic assembly (6) is shortened, the ends of the shell petal assemblies (4) move away from each other; The telescopic assembly (6) includes a first joint (601), a second joint (602) and a first pusher (603), wherein the first joint (601) and the second joint (602) are rotatably connected and are rotatably connected to the fixing portion (501) and the first pusher (603) respectively, and the first pusher (603) is rotatably connected to the outer side of the shell petal assembly (4); the rotation axis of the first joint (601) relative to the fixing portion (501) and the rotation axis of the second joint (602) relative to the first pusher (603) are both perpendicular to the rotation axis of the second joint (602) relative to the fixing portion (501). The rotation axis of the first joint (601) is perpendicular to the rotation axis of the first pusher (603) relative to the shell valve assembly (4); the rotation axis of the second joint (602) relative to the first pusher (603); the driver (5) is used to drive the intermediate panel (3) to rotate, the rotation axis of the intermediate panel (3) is perpendicular to the rotation axis of the first joint (601) relative to the fixed portion (501); when the intermediate panel (3) rotates, the second joint (602) rotates relative to the first joint (601) to extend or shorten the telescopic assembly (6); The shell petal assembly (4) includes a first panel (401) and a second panel (402) rotatably connected to the middle panel (3); one side of the first panel (401) is rotatably connected to one side of the middle panel (3); the second panel (402) is located on a side of the first panel (401) opposite to the middle panel (3) and is rotatably connected to the first panel (401); one side of the second panel (402) is connected to a third panel (403), and the third panel (403) is located on a side of the second panel (402) opposite to the first panel (401); the first pusher (603) is rotatably connected to the middle portion of the outer side of the first panel (401); The telescopic assembly (6) further comprises a third joint (604), a fourth joint (605) and a second pusher (606), wherein the third joint (604) is rotatably connected to the fourth joint (605) and both are rotatably connected to the first pusher (603) and the second pusher (606) respectively; the second pusher (606) is rotatably connected to the middle portion of the outer side of the second panel (402); the rotation axis of the third joint (604) relative to the first pusher (603) and the rotation axis of the fourth joint (605) relative to the second pusher (606) are both perpendicular to the rotation axis of the fourth joint (605) relative to the third joint (604); when the middle panel (3) rotates, the first panel (401), the second panel (402), the third panel (403) and the middle panel (3) can enclose the closed accommodating cavity (406).

2. The space debris capture mechanism with biomimetic adhesion and racemization function according to claim 1, characterized in that: A plurality of bristles (2) are evenly distributed on the surface of the adhesion layer (1), and the bristles (2) are used to contact space debris.

3. The space debris capture mechanism with bionic adhesion and racemization function according to claim 2, characterized in that: The bristles (2) are provided with an inclined surface (201) for contacting space debris, and the inclined surface (201) extends outward from the surface of the adhesion layer (1).

4. The space debris capture mechanism with biomimetic adhesion and racemization function according to claim 2, characterized in that: The density of the bristles (2) is between 1100 pieces / cm2 and 1300 pieces / cm2.

5. The space debris capture mechanism with biomimetic adhesion and racemization function according to claim 2, characterized in that: The bristles (2) are made of polydimethylsiloxane material.

6. The space debris capture mechanism with biomimetic adhesion and racemization function according to claim 1, characterized in that: The middle panel (3), the first panel (401) and the second panel (402) are all regular pentagonal panels; the third panel is an isosceles triangle.

7. The space debris capture mechanism with biomimetic adhesion and racemization function according to claim 6, characterized in that: The outer sides of the middle panel (3), the first panel (401), the second panel (402) and the third panel (403) are each provided with a plurality of weight-reducing grooves (404), and reinforcing ribs (405) are formed between two adjacent weight-reducing grooves (404) on the same panel.

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