Device and system for lifting flag on extraterrestrial celestial body

Abstract

The invention provides a device and a system for lifting a flag on an extraterrestrial celestial body. The device comprises a flagpole and a lifting device, the winder is arranged at one end of the flagpole; the rope is wound on the winding device and extends to the other end of the flagpole along the flagpole from the winding device, the rope bypasses the other end of the flagpole and then continues to extend back to the winding device along the flagpole, and the flag is fixed to the rope; the driver is used for enabling the winder to rotate, so that the rope moves relative to the flagpole in the extending direction of the rope; and the tensioning mechanism is used for tensioning the rope.

Description

Technical Field

[0001] The present disclosure relates to the field of aerospace engineering, and in particular to a device and system for raising and lowering a flag on an extraterrestrial body. Background Art

[0002] With the development of aerospace technology, human exploration of space has continued to deepen, and extraterrestrial bodies such as the moon and Mars have gradually become hot spots for exploration. In addition, the successful deployment and operation of the flag lifting device is also a verification of the landing, deployment and operation technology of the spacecraft, which is of great significance for subsequent scientific experiments and exploration missions.

[0003] The raising and lowering of flags on Earth is mainly achieved by rope dragging. This structure is simple in design and easy to maintain. The flag is fixed on a short pole, and the fixed pulley at the top of the flagpole is used to pull the short pole up and down, thereby driving the raising and lowering of the flag. This traditional lifting method is suitable for the Earth environment because it does not need to consider extreme climate and environmental factors. However, the application of this method on extraterrestrial bodies faces major challenges because the extraterrestrial environment is fundamentally different from the Earth environment.

[0004] Extraterrestrial bodies may have strong ultraviolet radiation, high-energy cosmic rays, fine dust and other environmental factors, which pose severe challenges to the materials and structures of flag lifting devices. In addition, the flag lifting device may experience harsh mechanical environments such as vibration and impact during transportation to extraterrestrial bodies, which may cause damage to the device components. Therefore, the traditional flag raising method needs to be significantly improved to adapt to the special environment of extraterrestrial bodies. In order to overcome these challenges, it is necessary to design a new type of flag-raising device, which must be able to withstand the impact of the mechanical environment without being damaged, avoid the tiny dust on the extraterrestrial body from getting stuck in the lifting device, ensure that the flag can be raised and lowered smoothly, and withstand extreme environments such as strong radiation on extraterrestrial bodies to ensure the reliability of the lifting mechanism and the flag raising and lowering effect. These requirements make the traditional flag raising method no longer suitable for extraterrestrial bodies, and require the development of new technical solutions. Summary of the invention

[0005] The present disclosure provides a device and system for raising and lowering a flag on an extraterrestrial body, which can ensure the stability and reliability of raising and lowering the flag in an extreme environment of the extraterrestrial body.

[0006] The technical solution of the present disclosure is achieved as follows: In a first aspect, the present disclosure provides a device for raising and lowering a flag on an extraterrestrial body, the device comprising: flagpole; A winder, the winder being arranged at one end of the flagpole; a rope, the rope being wound on the winder and extending from the winder along the flagpole to the other end of the flagpole, the rope passing around the other end of the flagpole and then continuing to extend along the flagpole back to the winder, the flag being fixed to the rope; A driver, the driver is used to rotate the winder so that the rope moves relative to the flagpole along its extension direction; A tensioning mechanism is used to tension the rope.

[0007] In some optional examples, the tensioning mechanism includes: a bracket, the bracket being fixed to the flagpole and being formed with a first guide portion; A sliding shaft, wherein the sliding shaft is formed with a second guide portion that matches the first guide portion, so that the sliding shaft can move under the guidance of the first guide portion; a roller, the roller being rotatably arranged on the sliding shaft around the sliding shaft, and the rope passing around the roller; A spring, one end of which is fixed to the bracket, and the other end of which is fixed to the sliding shaft.

[0008] In some optional examples, the flagpole includes a first pole portion and a second pole portion, and the first pole portion and the second pole portion are hinged together by a hinge, so that the flagpole can be converted between a first state in which the first pole portion and the second pole portion are parallel to each other and a second state in which the first pole portion and the second pole portion are 90° to each other, and the flag moves relative to the second pole portion.

[0009] In some optional examples, the hinge is a shape memory hinge.

[0010] In some optional examples, the tensioning mechanism is disposed at an end of the second rod portion adjacent to the hinge.

[0011] In some optional examples, the second rod portion is formed with a slide groove, and the device further includes a slider that cooperates with the slide groove so as to move in the slide groove, the slider is fixed to the rope, and the flag is fixed to the slider.

[0012] In some optional examples, the first rod portion is formed with a closed first wiring groove and a closed second wiring groove, the second rod portion is formed with a closed third wiring groove, and the rope passes through the first wiring groove, the second wiring groove and the third wiring groove.

[0013] In some optional examples, the second rod portion is formed with a series of S-shaped grooves arranged longitudinally along the second rod portion, each groove extending between the slide slot and the outer wall of the second rod portion, and the first end of each groove leading to the slide slot is farther away from the hinge than the second end leading to the outer wall of the second rod portion.

[0014] In some optional examples, a lubricant is applied between the slide groove and the slider.

[0015] In a second aspect, the present disclosure provides a system for raising and lowering a flag on an extraterrestrial body, the system comprising: The device for raising and lowering a flag on an extraterrestrial body according to the first aspect; A launch vehicle, wherein the launch vehicle is used to launch the device to the extraterrestrial body.

[0016] The present disclosure provides a device and system for raising and lowering a flag on an extraterrestrial body. The device is equipped with a tensioning mechanism. This design keeps the rope taut and effectively prevents contact and friction with components such as flagpoles. This practice of reducing friction not only helps to extend the service life of the rope and the flagpole, but also reduces the heat generated by friction, which is particularly important in an extraterrestrial environment with extreme temperatures. Since the rope is continuously stretched during use, it may become loose, affecting the stable raising and lowering of the flag. The tensioning mechanism ensures that the rope can maintain appropriate tension even under creep conditions, ensuring the smooth movement of the rope and the stability of the flag raising and lowering, and is not affected by creep. In addition, the continuous tension state of the rope makes the raising and lowering action faster and more accurate, improving the raising and lowering efficiency. The tensioning mechanism also ensures that the rope will not relax when subjected to unexpected impact or load changes, enhancing the reliability of the raising and lowering process. Considering the special environment of an extraterrestrial body, the design of the tensioning mechanism helps to maintain the tension of the rope under extreme temperature, radiation and dust conditions, ensuring that the device can work stably in various environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of an apparatus for raising and lowering a flag on an extraterrestrial body provided by an embodiment of the present disclosure is in a first state.

[0018] Figure 2 A three-dimensional schematic diagram of the tensioning mechanism of the device provided in an embodiment of the present disclosure.

[0019] Figure 3 A three-dimensional schematic diagram of an apparatus for raising and lowering a flag on an extraterrestrial body provided by an embodiment of the present disclosure is in a second state.

[0020] Figure 4 A three-dimensional schematic diagram of the second pole portion of a flagpole of the device provided in an embodiment of the present disclosure.

[0021] Figure 5 A schematic side view of the second pole portion of a flagpole of the device provided in an embodiment of the present disclosure.

[0022] Figure 6 A three-dimensional schematic diagram of the first pole portion of a flagpole of the device provided in an embodiment of the present disclosure.

[0023] Figure 7 A side view schematic diagram of a first pole portion of a flagpole of the device provided in an embodiment of the present disclosure.

[0024] Figure 8 A schematic exploded perspective view of the second pole portion of a flagpole of the device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] The technical solutions in the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings in the present disclosure.

[0026] As the pace of exploration of celestial bodies such as the Moon and Mars accelerates, it has become very important to achieve the goal of displaying flags on extraterrestrial bodies. However, the extreme conditions in the extraterrestrial environment, such as drastic temperature changes, strong radiation, and tiny particles of dust, have posed unprecedented challenges to the flag lifting system. In addition, during the journey from Earth to extraterrestrial bodies, the equipment must also withstand severe vibrations and shocks during launch and landing, which may cause traditional lifting systems to fail.

[0027] Faced with these challenges, the traditional lifting system is no longer applicable. Instead, a new type of lifting device is needed, which must not only be able to withstand the test of extreme environments, but also maintain operation under the influence of tiny dust particles to ensure the smooth and reliable raising and lowering of the flag. The design of this device must take into account the special conditions of extraterrestrial bodies to ensure its performance and durability in extreme environments.

[0028] The technical solution proposed in this disclosure is designed to meet these special requirements. Figure 1 The embodiment of the present disclosure provides a device 10 for raising and lowering a flag F on an extraterrestrial body. The device 10 may include a flagpole 11, a winder 12, a rope 13, a driver 14 and a tensioning mechanism 15.

[0029] exist Figure 1In the figure, the winder 12 is schematically shown by a dotted line because it is blocked by the base B, and the winder 12 is arranged at one end 11A of the flagpole 11. The rope 13 is wound on the winder 12, and extends from the winder 12 along the flagpole 11 to the other end 11B of the flagpole 11. The rope 13 goes around the other end 11B of the flagpole 11 and continues to extend along the flagpole 11 back to the winder 12, and the flag F is fixed to the rope 13. The driver 14 is used to rotate the winder 12 so that the rope 13 moves relative to the flagpole 11 along its own extension direction. Specifically, one end of the rope 13 extending from the winder 12 can be fixed to the winder 12, and the segment of the rope 13 adjacent to the one end can be wound on the winder 12 in a first winding direction. The other end of the rope 13 extending back to the winder 12 can also be fixed to the winder 12, and the segment of the rope 13 adjacent to the other end can be wound on the winder 12 in a second winding direction opposite to the first winding direction. In this way, when the winder 12 rotates, the rope 13 can be moved, thereby causing the flag F fixed to the rope 13 to rise and fall. The tensioning mechanism 15 is used to tension the rope 13.

[0030] Since the tensioning mechanism 15 is integrated in the device 10, the rope 13 can be kept in a tensioned state continuously. This tensioned state effectively avoids interference and direct sliding friction between the rope 13 and other components of the device 10, such as the flagpole 11. Reducing sliding friction not only helps to protect the rope 13 and the flagpole 11 and prolong their service life, but also reduces the heat generated by sliding friction, which is particularly important for extraterrestrial environments at extreme temperatures. The rope 13 will be continuously stretched during use and will inevitably creep, which may cause the rope 13 to relax and further affect the lifting stability of the flag F. The setting of the tensioning mechanism 15 ensures that the rope 13 can maintain appropriate tension even in the case of creep, thereby ensuring the smooth movement of the rope 13 and the stability of the lifting process of the flag F, and will not affect the lifting effect due to the creep of the rope 13. Since the rope 13 is always kept in a tensioned state, the lifting action is faster and more accurate, which improves the lifting efficiency. At the same time, the existence of the tensioning mechanism 15 ensures that the rope 13 will not relax due to unexpected impact or load changes during the lifting process, thereby enhancing the reliability of the lifting process. Taking into account the special environment of extraterrestrial bodies, such as extreme temperatures, radiation and dust, the design of the tensioning mechanism 15 helps to maintain the tension of the rope 13, thereby maintaining the stability of the raising and lowering of the flag F even under these extreme conditions. This design reduces fluctuations in system performance caused by environmental changes and ensures that the device 10 can operate normally in various environments.

[0031] In some embodiments of the present disclosure, see Figure 2 Combined with Figure 1The tensioning mechanism 15 may include a bracket 151 , a sliding shaft 152 , a roller 153 and a spring 154 .

[0032] The bracket 151 is fixed to the flagpole 11, such as Figure 1 It is easy to understand that the bracket 151 is formed with a first guide portion 151G, as shown in Figure 2 As shown in FIG. 1 , the first guide portion 151G may be a guide groove extending vertically. The sliding shaft 152 is formed with a second guide portion 152G that matches the first guide portion 151G, so that the sliding shaft 152 can move under the guidance of the first guide portion 151G, as shown in FIG. Figure 2 As shown in FIG. 1 , the second guide portion 152G may be a shaft neck portion that matches the guide groove, and the sliding shaft 152 may be able to move in the vertical direction. The roller 153 is arranged on the sliding shaft 152 in a manner that it can rotate around the sliding shaft 152, as shown in FIG. Figure 2 As schematically shown by the elliptical arrow in FIG. 1 , the rope 13 passes around the roller 153. One end 154A of the spring 154 is fixed to the bracket 151, and the other end 154B of the spring 154 is fixed to the sliding shaft 152. Figure 2 As shown in the figure, the spring 154 can apply a vertical downward force to the sliding shaft 152 and the roller 153 arranged on the sliding shaft 152, and the rope 13 passing around the roller 153 will be tensioned.

[0033] The tensioning mechanism 15 is composed of a bracket 151, a sliding shaft 152, a roller 153 and a spring 154. Such a design is simple and efficient. This simplified structure reduces the number of components, reduces the complexity of manufacturing and maintenance, and improves the overall reliability. Figure 2 In the case shown in FIG. 1 , the tensioning mechanism 15 applies a vertical downward force to the sliding shaft 152 and the roller 153 through the spring 154 to ensure that the rope 13 is effectively tensioned. This design makes the tension of the rope 13 on the flagpole 11 uniform and stable, avoiding the problem of unstable lifting of the flag F due to the relaxation of the rope 13. Since the sliding shaft 152 can move vertically in the first guide part 151G, the tensioning mechanism 15 can adjust the tensioning force by changing the stiffness of the spring 154. This adjustment capability enables the device 10 to adapt to different load conditions and environmental changes and maintain the stability of the lifting process of the flag F. Since the roller 153 can rotate around the sliding shaft 152, the rope 13 can bypass the roller 153 without generating sliding friction with the roller 153 or in a low friction state, thereby reducing wear and extending the service life of the rope 13 and the tensioning mechanism 15. The simple structure and reliable performance of the tensioning mechanism 15 enable it to work stably in the extreme environment of an extraterrestrial body, and the constant tension provided by the spring 154 helps to maintain the tension of the rope 13, maintaining performance even under adverse conditions such as temperature changes, radiation and dust.

[0034] In some embodiments of the present disclosure, see Figure 1 and Figure 3 The flagpole 11 may include a first rod portion 111 and a second rod portion 112, which are hinged together by a hinge 16, so that the flagpole 11 can be in a first state (such as in a state where the first rod portion 111 and the second rod portion 112 are parallel to each other) where the first rod portion 111 and the second rod portion 112 are hinged together. Figure 3 ) and the first rod portion 111 and the second rod portion 112 are 90° to each other (as shown in Figure 1 ) as shown in Figure 1 The flag F shown in FIG. 1 moves relative to the second rod portion 112 .

[0035] In the stage of launching the device 10 to an extraterrestrial body, the flagpole 11 can adjust the first rod 111 and the second rod 112 to a first state in which they are parallel to each other through the hinge 16, thereby saving space. This design minimizes the space occupied by the device 10 during transportation and improves the launch efficiency and economy. In the stage where the flag F needs to be raised or lowered, the flagpole 11 can adjust the first rod 111 and the second rod 112 to a second state in which they are 90° to each other through the hinge 16 to show the effect of the flag F being raised. This rapid conversion capability enables the flag F to be displayed quickly and effectively, enhancing the display effect and visual impact. The flagpole 11 connects the first rod 111 and the second rod 112 through the hinge 16. This design provides structural stability, ensuring that the flagpole 11 can reliably switch states and display the flag F in the harsh environment of the extraterrestrial body. The design of the flagpole 11 enables it to adapt to different extraterrestrial environments and mission requirements. Whether it is the space saving requirement in the launch stage or the display requirement after landing, the flagpole 11 can meet them, showing strong adaptability. The state conversion operation of the flagpole 11 is simple and can be realized through the hinge 16 without complicated mechanical operation, thus reducing the operation difficulty and error probability.

[0036] In addition, Figure 1 and Figure 3 It is also shown that the first rod portion 111 and the base B are also hinged together by a hinge, so that when the base B remains stationary, the first rod portion 111 can be Figure 1 The horizontal state shown in Figure 3 Transitions between the vertical states shown in FIG.

[0037] In some embodiments of the present disclosure, hinge 16 may be a shape memory hinge.

[0038] The shape memory hinge does not have the complex gap structure of the traditional spring hinge, which fundamentally avoids the failure of deployment caused by dust from extraterrestrial bodies getting stuck in the hinge gap. Figure 1 and Figure 3As shown, the flagpole 11 is connected to the first rod 111 and the second rod 112 by a shape memory hinge, which will not be affected by dust accumulation when switching states, thereby improving the reliability of the device 10 in harsh environments. The use of the shape memory hinge provides a smooth unfolding process, such as Figure 1 and Figure 3 As shown, when the flagpole 11 is converted from the first state to the second state, the shape memory hinge can smoothly drive the rotation of the second rod 112, avoiding sudden impact caused by rapid or uneven movement. The shape memory hinge effectively reduces the excitation during the state conversion of the flagpole 11, protecting the flag F and other components from damage. This smooth conversion reduces the physical pressure on the flag F and other potentially sensitive components, reducing the risk of damage caused by vibration. The shape memory hinge can accurately control the rotation of the flagpole 11 to ensure that the flag F always maintains the correct position and posture during the conversion process. This accuracy is crucial for accurately displaying the flag F on an extraterrestrial body. The hinge made of shape memory material has higher durability and reliability due to its unique material properties. Even after multiple state conversions, the shape memory hinge can still maintain its performance, reducing maintenance requirements and potential failure rates.

[0039] In some embodiments of the present disclosure, see Figure 1 and Figure 3 The tensioning mechanism 15 may be disposed at an end of the second rod portion 112 adjacent to the hinge 16 .

[0040] In this way, whether Figure 1 The first rod portion 111 and the second rod portion 112 shown in FIG. 1 are 90° to each other. Figure 3 The first rod 111 and the second rod 112 shown in the figure are arranged side by side, and the rope 13 will go around the roller 153, so that the rope 13 can be reliably tensioned by the roller 153. This design ensures that the rope 13 can maintain appropriate tension in any state of the flagpole 11, reduces the lifting error caused by the slack of the rope 13, and ensures the accuracy and consistency of the lifting of the flag F. In addition, the setting position of the tensioning mechanism 15 optimizes the spatial layout of the device 10, making the layout between the flagpole 11 and the tensioning mechanism 15 compact and efficient.

[0041] In some embodiments of the present disclosure, see Figure 4 and Figure 5 Combined with Figure 1 The second rod portion 112 may be formed with a slide groove 112G, and the device 10 may further include a slider 17 that cooperates with the slide groove 112G to facilitate movement in the slide groove 112G, and the slider 17 is fixed to the slide groove 112G. Figure 1 The rope 13 shown in FIG. 1 and the flag F are fixed to the slider 17, as shown in FIG. Figure 1 As shown in .

[0042] The cooperation between the slider 17 and the slide groove 112G ensures that the flag F rises and falls along a fixed path, reducing the influence of the external mechanical environment on the lifting process of the flag F. Since the slider 17 moves strictly along the extension path of the slide groove 112G, it ensures that the lifting process of the flag F is more stable. Even if the rope 13 swings or oscillates relative to the flagpole 11, due to the fixed moving path of the slider 17, the flag F will not swing or oscillate with the rope 13, thereby ensuring the stability of the display process of the flag F. The structural design of the slider 17 enables it to withstand the mechanical environment such as vibration and impact during the process of ground storage, launch, transfer, landing on an extraterrestrial body, etc. of the device 10. The reliability of the device 10 is improved by the precise movement of the slider 17 in the slide groove 112G. This precise movement reduces unexpected situations caused by the swing or relaxation of the rope 13, ensuring the safety and reliability of the lifting process of the flag F. The cooperation between the slider 17 and the slide groove 112G optimizes the mechanical transmission efficiency, so that the driving force of the driver 14 on the rope 13 is more effectively converted into the lifting action of the flag F, thereby improving the lifting efficiency of the device 10.

[0043] In some embodiments of the present disclosure, see Figures 5 to 7 Combined with Figure 1 The first rod portion 111 may be formed with a closed first wiring groove G1 and a closed second wiring groove G2, and the second rod portion 112 may be formed with a closed third wiring groove G3, and the rope 13 passes through the first wiring groove G1, the second wiring groove G2 and the third wiring groove G3.

[0044] By designing the first wire groove G1, the second wire groove G2 and the third wire groove G3 which are closed in the first rod part 111 and the second rod part 112, the rope 13 is completely closed inside the flagpole 11 except for the part extending in the slide groove 112G. This design effectively avoids the direct radiation of ultraviolet rays, high-energy cosmic rays and the like from extraterrestrial bodies to the rope 13, thereby protecting the rope 13 from aging and damage caused by radiation. Since the rope 13 is closed in the first wire groove G1, the second wire groove G2 and the third wire groove G3, the service life of the rope 13 is extended. This protective effect reduces the degradation of the material properties of the rope 13 caused by radiation, and maintains the strength and durability of the rope 13. The rope 13 is a key component for the lifting of the flag F. By protecting the rope 13 from the external environment, the reliability of the lifting function of the device 10 is maintained, and the flag F can be lifted and lowered normally even in a harsh extraterrestrial environment. Since the rope 13 is protected, the replacement frequency caused by radiation damage is reduced, thereby reducing the maintenance cost and complexity. On an extraterrestrial body, any equipment failure may lead to mission failure. By protecting the rope 13, the key functions of the device 10 are guaranteed, thereby improving the success rate of the mission.

[0045] In addition, the cross-sectional areas of the first wiring groove G1, the second wiring groove G2 and the third wiring groove G3 can be much larger than the cross-sectional area of ​​the rope 13 to reduce the risk of dust particles from extraterrestrial bodies invading the wiring grooves and causing the flag F to be stuck when being raised or lowered.

[0046] In some embodiments of the present disclosure, see Figure 8 Combined with Figure 1 The second rod portion 112 is formed with a series of S-shaped channels C arranged along the longitudinal direction of the second rod portion 112, each channel C extends between the slide groove 112G and the outer wall 112W of the second rod portion 112, and the first end C1 of each channel C leading to the slide groove 112G is farther away from the hinge 16 than the second end C2 leading to the outer wall 112W of the second rod portion 112.

[0047] The structural design of the channel C prevents dust from flowing into the chute 112G under the action of external force. At the same time, the inclined channel C helps dust to move from the inside of the chute 112G to the outside of the chute 112G in a microgravity environment. This design improves the dust removal efficiency and reduces the accumulation of dust in the chute 112G. In other words, the channel C has a similar effect to that of a Tesla valve, which effectively avoids the blockage of the slider 17 caused by dust intrusion on an extraterrestrial body, and can keep the flag F smoothly lifted even in a dusty environment. Since the matching relationship between the slider 17 and the chute 112G needs to be kept relatively close, the design of the channel C reduces the interference of dust on the lifting and lowering movement of the slider 17, ensuring the stability and accuracy of the lifting and lowering process of the flag F. By reducing the jamming and wear caused by dust, the design of the channel C improves the reliability and durability of the device 10. This design reduces the maintenance requirements and extends the service life of the device 10. On an extraterrestrial body, any equipment failure may lead to mission failure. By reducing the jamming during the lifting and lowering of the slider 17, the design of the channel C improves the success rate of the mission.

[0048] In addition, the width of the channel C can be determined according to the dust characteristics of the extraterrestrial body. For example, the width of the channel C can be set to 1 mm for the lunar environment.

[0049] In some embodiments of the present disclosure, a lubricant may be applied between the slide groove 112G and the slider 17 , and the lubricant may be, for example, molybdenum disulfide.

[0050] Applying a lubricant such as molybdenum disulfide between the slide groove 112G and the slider 17 significantly reduces the friction coefficient between the two. This friction reduction effect helps protect the slider 17 and the slide groove 112G, reduce wear caused by friction, and extend their service life. Because the lubricant reduces the friction of the slider 17 in the slide groove 112G, the lifting process of the flag F becomes smoother, the lifting speed is more uniform, and the overall efficiency of the lifting operation is improved. In extraterrestrial environments, such as the moon or Mars, dust is a major environmental factor. The application of lubricants enhances the adaptability of the device 10 in these environments, enabling it to work stably in dusty environments.

[0051] In addition, the slider 17 can be made of a polyimide self-lubricating composite material, which has good self-lubricating properties, making the slider 17 smoother in the sliding groove 112G and reducing the risk of jamming. In addition, the material defining the sliding groove 112G can be a magnesium alloy, which can effectively avoid low-temperature cold welding between the slider 17 and the sliding groove 112G when matched with the slider 17 made of the polyimide self-lubricating composite material.

[0052] The embodiments of the present disclosure also provide a system for raising and lowering a flag F on an extraterrestrial body, which is not shown in the accompanying drawings. The system may include an apparatus 10 for raising and lowering a flag F on an extraterrestrial body according to the aforementioned embodiments of the present disclosure and a launch vehicle, wherein the launch vehicle is used to launch the apparatus 10 to the extraterrestrial body.

[0053] It should be noted that the technical solutions described in the present disclosure can be combined arbitrarily without conflict.

[0054] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A device for raising and lowering a flag on an extraterrestrial body, characterized in that: The device comprises: flagpole; A winder, the winder being arranged at one end of the flagpole; a rope, the rope being wound on the winder and extending from the winder along the flagpole to the other end of the flagpole, the rope passing around the other end of the flagpole and then continuing to extend along the flagpole back to the winder, the flag being fixed to the rope; A driver, the driver is used to rotate the winder so that the rope moves relative to the flagpole along its extension direction; A tensioning mechanism is used to tension the rope.

2. The device for raising and lowering a flag on an extraterrestrial body according to claim 1, characterized in that: The tensioning mechanism comprises: a bracket, the bracket being fixed to the flagpole and being formed with a first guide portion; A sliding shaft, wherein the sliding shaft is formed with a second guide portion that matches the first guide portion, so that the sliding shaft can move under the guidance of the first guide portion; a roller, the roller being rotatably arranged on the sliding shaft around the sliding shaft, and the rope passing around the roller; A spring, one end of which is fixed to the bracket, and the other end of which is fixed to the sliding shaft.

3. The device for raising and lowering a flag on an extraterrestrial body according to claim 1 or 2, characterized in that: The flagpole includes a first rod portion and a second rod portion, and the first rod portion and the second rod portion are hinged together by a hinge, so that the flagpole can be converted between a first state in which the first rod portion and the second rod portion are parallel to each other and a second state in which the first rod portion and the second rod portion are 90° to each other, and the flag moves relative to the second rod portion.

4. The device for raising and lowering a flag on an extraterrestrial body according to claim 3, characterized in that: The hinge is a shape memory hinge.

5. The device for raising and lowering a flag on an extraterrestrial body according to claim 3, characterized in that: The tensioning mechanism is disposed at an end of the second rod portion adjacent to the hinge.

6. The device for raising and lowering a flag on an extraterrestrial body according to claim 3, characterized in that: The second rod portion is formed with a slide groove, and the device further comprises a slider matched with the slide groove so as to move in the slide groove, the slider is fixed to the rope, and the flag is fixed to the slider.

7. The device for raising and lowering a flag on an extraterrestrial body according to claim 6, characterized in that: The first rod portion is formed with a closed first wiring groove and a closed second wiring groove, the second rod portion is formed with a closed third wiring groove, and the rope passes through the first wiring groove, the second wiring groove and the third wiring groove.

8. The device for raising and lowering a flag on an extraterrestrial body according to claim 6, characterized in that: The second rod portion is formed with a series of S-shaped grooves arranged along the longitudinal direction of the second rod portion, each groove extends between the slide slot and the outer wall of the second rod portion, and the first end of each groove leading to the slide slot is farther away from the hinge than the second end leading to the outer wall of the second rod portion.

9. The device for raising and lowering a flag on an extraterrestrial body according to claim 6, characterized in that: Lubricant is applied between the slide groove and the slider.

10. A system for raising and lowering a flag on an extraterrestrial body, characterized in that: The system comprises: A device for raising and lowering a flag on an extraterrestrial body according to any one of claims 1 to 9; A launch vehicle, wherein the launch vehicle is used to launch the device to the extraterrestrial body.

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