A buffer platform for drone landing in a closed environment

Abstract

The present invention discloses a buffer platform for the landing of a drone in a closed environment, and relates to the technical field of drone landing platforms. The buffer platform for the landing of a drone in a closed environment comprises a sponge bottom plate, a protective mechanism is installed on the top of the sponge bottom plate, a plurality of support shell columns are fixedly connected to the top center of the sponge bottom plate, a buffer device is installed inside the plurality of support shell columns, a fixed platform is fixedly connected between the tops of the outer walls of the plurality of support shell columns, a magnetic ring device is arranged at the top center of the fixed platform, and a second telescopic column and a plurality of first telescopic columns are slidably connected to the tops of the inner walls of the plurality of support shell columns, respectively. The buffering of the landing of the drone is achieved by designing the buffer device, and at the same time, the sponge pad and the rubber pad can protect the bottom of the drone, and the third permanent magnet is installed at the bottom of the plastic plate to avoid the collision between the drone and the landing platform due to suction, and the mass of the overall drone can also be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicle landing platforms, in particular to a buffer platform for unmanned aerial vehicles to land in a closed environment. Background Art

[0002] The drone needs to use a landing platform when descending, thereby avoiding the bottom of the drone from scratching the ground after landing. At the same time, some platforms with buffer functions can better protect the landing of the drone, thereby avoiding direct collision between the drone and the hard landing platform.

[0003] An existing drone landing buffer platform, such as the invention with patent number CN108622433B, discloses a drone recovery device, which relates to the field of drones. The drone landing and recovery device mainly consists of a base, a landing platform, a buffer mechanism and an auxiliary landing mechanism. The landing platform is arranged above the base, and the buffer mechanism and the auxiliary landing mechanism are both arranged inside the base. A column is integrally formed at the bottom of the landing platform, and the column passes through the base and extends to the inside of the base to be connected with the buffer mechanism; the drone recovery device provides a place for the drone to land by setting a landing platform. After the drone lands on the landing platform, the landing gear at the bottom of the drone will cooperate with the magnetic plate, and the magnetic plate will adsorb the drone on the landing platform, thereby preventing the drone from bouncing back or tipping over and damaging the drone due to unstable landing during landing; in order to make the drone land more stably and avoid the drone landing on the buffer plate The secondary rebound under the action of the impact device uses a magnetic plate and an iron drone chassis so that the drone can be completely adsorbed on the landing platform when landing, but this method has the following disadvantages: 1. In order to pursue the stability of the drone landing, the use of an iron drone chassis will greatly increase the overall weight of the drone, thereby increasing the weight of the drone and reducing the overall power performance of the drone; 2. After the magnetic plate and the drone chassis generate gravity, they will gradually adsorb the drone, and the suction force generated will gradually increase, and finally the drone chassis will quickly approach the landing platform, causing the drone to suddenly collide with the landing platform and then be adsorbed. This method will cause the drone to vibrate greatly during landing. After long-term use, some precision devices in the drone are prone to damage due to multiple vibrations; at the same time, in closed environments, such as houses, garages, etc., certain protective measures need to be taken when the drone is landing due to the small space.

[0004] To this end, we have developed a new cushioning platform for drones to land in confined environments. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a buffer platform for the landing of a drone in a closed environment, which solves the problem that the iron drone chassis will greatly increase the overall weight of the drone, the magnetic plate and the drone chassis are adsorbed for landing, which will cause some precision devices in the drone to be easily damaged due to multiple vibrations after long-term use, and the problem of safety measures in a closed environment.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the present invention is implemented through the following technical solutions: a buffer platform for a drone to land in a closed environment, comprising a sponge bottom plate, a protective mechanism is installed on the top of the sponge bottom plate, a plurality of supporting shell columns are fixedly connected to the top center of the sponge bottom plate, and a buffer device is installed inside the plurality of supporting shell columns;

[0009] A fixing platform is fixedly connected between the tops of the outer walls of the plurality of support shell columns, a magnetic ring device is arranged at the top center of the fixing platform, a second telescopic column and a plurality of first telescopic columns are slidably connected to the tops of the inner walls of the plurality of support shell columns, and a limiting mechanism corresponding to the second telescopic column is installed on one side of the top of the fixing platform;

[0010] A plastic plate is fixedly connected to the tops of the first telescopic columns and the second telescopic columns, a third permanent magnet is arranged at the bottom center of the plastic plate, a rubber pad is arranged on the top of the plastic plate, and a sponge pad is arranged on the top of the rubber pad.

[0011] Preferably, the protective mechanism includes a mounting bar fixedly connected to the top of the sponge base plate, a nylon protective net is installed on the top of the mounting bar, a plurality of connecting balls are connected to the top of the nylon protective net, and a connecting rope is provided on the top of each of the plurality of connecting balls.

[0012] Through the above technical solution, one end of multiple connecting ropes is fixed on the ceiling of a house or garage. The fixation of multiple connecting ropes can make the overall nylon protective net have no rigid structure. When the drone is improperly landed, the nylon protective net can prevent the drone from flying out and hitting people or hitting the wall. At the same time, the sponge bottom plate can also play a protective role when the drone falls due to improper operation, thereby reducing property losses.

[0013] Preferably, the buffer device is a shock absorbing spring.

[0014] Through the above technical solution, after the drone lands, the sponge pad, rubber pad and plastic plate are squeezed, and then the shock-absorbing spring is squeezed through the second telescopic column and the plurality of first telescopic columns, thereby playing a role of buffering and shock-absorbing the landing of the drone.

[0015] Preferably, the buffer device is a shock absorbing assembly, which includes a first magnetic block and a second magnetic block slidably connected to the inner wall of the supporting shell column, and the top of the first magnetic block and the bottom of the second magnetic block are respectively fixedly connected with a first spring and a second spring.

[0016] Through the above technical solution, after the drone lands, the sponge pad, rubber pad and plastic plate are squeezed, and then the first spring, the second spring, the first magnetic block and the second magnetic block are squeezed through the second telescopic column and the multiple first telescopic columns. Through the elasticity of the first spring and the second spring and the mutual repulsion of the first magnetic block and the second magnetic block, the cushioning effect of the drone landing can be better achieved.

[0017] Preferably, the first magnetic block and the second magnetic block repel each other on a side close to each other.

[0018] Through the above technical solution, it is ensured that the first magnetic block and the second magnetic block can achieve a certain buffering effect by relying on the property of mutual repulsion.

[0019] Preferably, the magnetic ring device is a first permanent magnet.

[0020] Through the above technical solution, after the drone lands, the entire plastic plate begins to descend, and at the same time, the third permanent magnet slowly contacts the first permanent magnet, and as the distance becomes smaller and smaller, the attraction gradually increases until a stable state is reached. At this time, the elastic force of the multiple shock-absorbing springs is equal to the suction force between the first permanent magnet and the third permanent magnet plus the gravity generated by the drone body, the sponge pad, the rubber pad, the plastic plate, the second telescopic column and the multiple first telescopic columns. A general buffer landing platform will have a certain rebound after buffering. In order to avoid secondary rebound of the drone, the present invention has a maximum attraction when the third permanent magnet falls to the lowest point. At the same time, the attraction at this time is designed to be approximately equal to the elastic force of the multiple shock-absorbing springs minus the gravity of the multiple moving objects, so that the lowest point of the fall can be approximately a stable balance point, thereby avoiding secondary rebound of the drone. In order to avoid contact between the first permanent magnet and the third permanent magnet, in this process, the stroke of the compression limit of the multiple shock-absorbing springs is less than the distance between the first permanent magnet and the third permanent magnet.

[0021] Preferably, the magnetic ring device is a buffer magnetic ring assembly, which includes a fixed sleeve fixedly connected to the center of the fixed platform, a plurality of third springs fixedly connected to the bottom inner surface of the fixed sleeve, and a second permanent magnet fixedly connected to the top of the plurality of third springs.

[0022] Through the above technical solution, multiple third springs are added at the bottom of the second permanent magnet. As the drone descends, the second permanent magnet and the third permanent magnet generate suction. As the third permanent magnet continues to descend, the suction gradually increases, and the second permanent magnet rises and pulls the multiple third springs until a stable state is reached. At this time, the elastic force of the multiple shock-absorbing springs is equal to the suction between the second permanent magnet and the third permanent magnet plus the gravity generated by the drone body, sponge pad, rubber pad, plastic plate, second telescopic column and multiple first telescopic columns. Similarly, in order to avoid secondary rebound of the drone, the attraction is maximum when the third permanent magnet falls to the lowest point. At the same time, the attraction at this time is designed to be roughly equal to the elastic force of the multiple shock-absorbing springs minus the gravity of the multiple moving objects. Adding multiple third springs can provide a certain displacement distance for the second permanent magnet, so that a stable suction value can be quickly reached during the falling process of the third permanent magnet.

[0023] Preferably, the magnetic ring device is an electromagnetic assembly, which includes a metal shell arranged at the top center of the fixing platform, the inner wall of the metal shell is provided with a wire winding, and one side of the wire winding is connected to two connecting wires.

[0024] Through the above technical solution, the two connecting wires are energized when the drone lands, and the corresponding magnetic field is generated by the current in the wire windings, thereby achieving the same purpose as the permanent magnet. However, after the drone lands and reaches a stable state, the electromagnetic component can slowly reduce the current when it is turned off, and the suction force generated between the electromagnetic component and the third permanent magnet can slowly decrease, so that the entire plastic plate can be slowly reset under the action of multiple shock-absorbing spring forces, and then the drone can be removed, and the fixation of the limit mechanism does not need to be used.

[0025] Preferably, the limiting mechanism comprises a connecting sleeve, a sliding block is slidably connected to the connecting sleeve, and a plurality of diamond-shaped tooth blocks are fixedly connected to the front and rear ends of the sliding block on a side close to the second telescopic column.

[0026] Through the above technical solution, after the drone descends and reaches a stable state, the sliding block is pushed to make the multiple diamond-shaped tooth blocks engage with the toothed grooves on the second telescopic column, thereby completing the fixation of the second telescopic column, avoiding the situation where the plastic plate suddenly bounces up due to the lack of gravity of the drone after the drone is quickly removed.

[0027] Preferably, a tooth-shaped groove corresponding to the plurality of diamond-shaped tooth blocks is provided in the middle of one side of the second telescopic column.

[0028] Through the above technical solution, both sides of the diamond-shaped tooth block are flat structures and can be smoothly inserted into the tooth-shaped groove.

[0029] (III) Beneficial effects

[0030] The present invention provides a buffer platform for a drone to land in a closed environment. It has the following beneficial effects:

[0031] 1. A buffer platform for a drone to land in a closed environment achieves buffering of the drone landing by designing a buffer device. At the same time, through the adsorption of the magnetic ring device and the third permanent magnet, the secondary rebound of the drone after buffering can be effectively avoided. At the same time, the sponge pad and the rubber pad can protect the bottom of the drone. The third permanent magnet is installed at the bottom of the plastic plate, which can avoid the collision between the drone and the landing platform due to suction, and can also effectively reduce the overall mass of the drone.

[0032] 2. This is a buffer platform for the landing of drones in a closed environment. By designing a protective mechanism, it can land in a closed environment. Due to the small space, when the drone is not landed properly, the nylon protective net can prevent the drone from flying out and hitting people or hitting the wall. At the same time, the sponge bottom plate can also play a protective role when the drone falls due to improper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention;

[0034] Figure 2 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0035] Figure 3 This is a schematic cross-sectional view of the structure of Embodiment 1 of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of the diamond-shaped tooth block of the present invention;

[0037] Figure 5 This is a schematic cross-sectional view of the structure of Embodiment 2 of the present invention;

[0038] Figure 6 This is a structural diagram of Embodiment 3 of the present invention;

[0039] Figure 7 This is a schematic cross-sectional view of the structure of Embodiment 3 of the present invention;

[0040] Figure 8 This is a structural diagram of Embodiment 4 of the present invention;

[0041] Fig. 9 It is a schematic cross-sectional structural diagram of embodiment 4 of the present invention.

[0042] Among them, 1. sponge bottom plate; 2. protection mechanism; 201. mounting strip; 202. nylon protection net; 203. connecting ball; 204. connecting rope; 3. supporting shell column; 4. buffer device; 41. shock absorbing spring; 42. shock absorbing assembly; 421. first spring; 422. first magnetic block; 423. second magnetic block; 424. second spring; 5. fixing table; 6. magnetic ring device; 61. first permanent magnet; 62. buffer magnetic ring assembly; 621. fixing sleeve; 622. second permanent magnet; 623. third spring; 63. electromagnetic assembly; 631. metal shell; 632. wire winding; 633. connecting wire; 7. first telescopic column; 8. second telescopic column; 9. limiting mechanism; 901. connecting sleeve; 902. sliding block; 903. diamond tooth block; 10. plastic plate; 11. third permanent magnet; 12. rubber pad; 13. sponge pad. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1:

[0045] like Figure 1-7 As shown, an embodiment of the present invention provides a buffer platform for a drone to land in a closed environment, comprising a sponge bottom plate 1, a protective mechanism 2 is installed on the top of the sponge bottom plate 1, the protective mechanism 2 comprises a mounting strip 201 fixedly connected to the top of the sponge bottom plate 1, a nylon protective net 202 is installed on the top of the mounting strip 201, a plurality of connecting balls 203 are connected to the top of the nylon protective net 202, a connecting rope 204 is arranged on the top of each of the plurality of connecting balls 203, one end of the plurality of connecting ropes 204 is fixed to the ceiling of a house or a garage, and the fixing of the plurality of connecting ropes 204 can make the overall nylon protective net 202 have no rigid structure, and When the drone is improperly landed, the nylon protective net 202 can prevent the drone from flying out and hitting people or hitting the wall. At the same time, the sponge bottom plate 1 can also play a protective role when the drone is improperly operated and falls, thereby reducing the loss of property. A plurality of supporting shell columns 3 are fixedly connected to the top center of the sponge bottom plate 1. A buffer device 4 is installed inside the plurality of supporting shell columns 3. The buffer device 4 is a shock-absorbing spring 41. After the drone lands, the sponge pad 13, the rubber pad 12 and the plastic plate 10 are squeezed, and then the shock-absorbing spring 41 is squeezed through the second telescopic column 8 and the plurality of first telescopic columns 7, thereby playing a role of buffering and shock-absorbing for the landing of the drone.

[0046] like Figure 1-7As shown, a fixing platform 5 is fixedly connected between the tops of the outer walls of the plurality of supporting shell columns 3, and a magnetic ring device 6 is arranged at the top center of the fixing platform 5, and the magnetic ring device 6 is a first permanent magnet 61. After the UAV lands, the whole plastic plate 10 begins to descend, and at the same time, the third permanent magnet 11 slowly contacts the first permanent magnet 61, and as the distance becomes smaller and smaller, the attraction gradually increases until a stable state is reached. At this time, the elastic force of the plurality of shock-absorbing springs 41 is equal to the suction force between the first permanent magnet 61 and the third permanent magnet 11 plus the gravity generated by the UAV body, the sponge pad 13, the rubber pad 12, the plastic plate 10, the second telescopic column 8 and the plurality of first telescopic columns 7. A general buffer landing platform will produce a certain rebound after buffering. In order to avoid a secondary rebound of the UAV, the present invention is configured such that the attraction is at a maximum value when the third permanent magnet 11 falls to the lowest point, and at the same time, the attraction at this time is designed to be approximately equal to the elastic force of the plurality of shock-absorbing springs 41 minus the gravity of the plurality of moving objects, so that the lowest point of the fall can be approximately a stable equilibrium point, thereby avoiding a secondary rebound of the UAV. (In order to avoid the first permanent magnet 61 and the third permanent magnet 11 come into contact, and in this process, the stroke of the compression limit of the plurality of shock-absorbing springs 41 is less than the distance between the first permanent magnet 61 and the third permanent magnet 11), the tops of the inner walls of the plurality of supporting shell columns 3 are slidably connected with the second telescopic column 8 and the plurality of first telescopic columns 7, respectively, and a limiting mechanism 9 corresponding to the second telescopic column 8 is installed on one side of the top of the fixed platform 5, the limiting mechanism 9 includes a connecting sleeve 901, and a sliding block 902 is slidably connected to the connecting sleeve 901, and the sliding block 902 is located at the front and rear ends of the connecting sleeve 901 near the second telescopic column 8. The ends are fixedly connected with a plurality of diamond-shaped tooth blocks 903. After the drone descends and reaches a stable state, the sliding block 902 is pushed to make the plurality of diamond-shaped tooth blocks 903 engage with the tooth-shaped grooves on the second telescopic column 8, thereby completing the fixation of the second telescopic column 8, and avoiding the situation that the plastic plate 10 suddenly bounces up due to the lack of gravity of the drone after the drone is quickly removed. A tooth-shaped groove corresponding to the plurality of diamond-shaped tooth blocks 903 is opened in the middle of one side of the second telescopic column 8, and the two sides of the diamond-shaped tooth block 903 are flat structures, which can be smoothly inserted into the tooth-shaped groove;

[0047] like Figure 1 and Figure 2 As shown, a plastic plate 10 is fixedly connected to the tops of the plurality of first telescopic columns 7 and the second telescopic columns 8, a third permanent magnet 11 is arranged at the bottom center of the plastic plate 10, a rubber pad 12 is arranged on the top of the plastic plate 10, and a sponge pad 13 is arranged on the top of the rubber pad 12.

[0048] Embodiment 2:

[0049] like Figure 1-5As shown, the difference between this embodiment and the first embodiment is that the buffer device 4 is a shock absorbing assembly 42, and the shock absorbing assembly 42 includes a first magnetic block 422 and a second magnetic block 423 that are slidably connected to the inner wall of the supporting shell column 3, and the top of the first magnetic block 422 and the bottom of the second magnetic block 423 are respectively fixedly connected with a first spring 421 and a second spring 424. After the drone lands, the sponge pad 13, the rubber pad 12 and the plastic plate 10 are squeezed, and then the first spring 421, the second spring 424, the first magnetic block 422 and the second magnetic block 423 are squeezed through the second telescopic column 8 and the plurality of first telescopic columns 7. Through the elasticity of the first spring 421 and the second spring 424 and the mutually exclusive nature of the first magnetic block 422 and the second magnetic block 423, the buffering effect of the landing of the drone can be better achieved. The first magnetic block 422 and the second magnetic block 423 are mutually exclusive on the side close to each other, ensuring that the first magnetic block 422 and the second magnetic block 423 can achieve a certain buffering effect by relying on the mutually exclusive nature.

[0050] Embodiment three:

[0051] like Figure 1-7 As shown, the difference between this embodiment and the first embodiment is that: the magnetic ring device 6 is a buffer magnetic ring assembly 62, and the buffer magnetic ring assembly 62 includes a fixed sleeve 621 fixedly connected to the center of the fixed platform 5, and the bottom inner surface of the fixed sleeve 621 is fixedly connected with a plurality of third springs 623, and the tops of the plurality of third springs 623 are fixedly connected with a second permanent magnet 622, and a plurality of third springs 623 are added to the bottom of the second permanent magnet 622. As the drone descends, the second permanent magnet 622 and the third permanent magnet 11 generate suction during the descent process, and as the third permanent magnet 11 continues to descend, the suction gradually increases, and the second permanent magnet 622 will rise and pull the plurality of third springs 623 until When the stable state is reached, the elastic force of the multiple shock-absorbing springs 41 is equal to the suction force between the second permanent magnet 622 and the third permanent magnet 11 plus the gravity generated by the drone body, sponge pad 13, rubber pad 12, plastic plate 10, second telescopic column 8 and multiple first telescopic columns 7. Similarly, in order to avoid secondary rebound of the drone, the attraction is maximum when the third permanent magnet 11 falls to the lowest point. At the same time, the attraction at this time is designed to be roughly equal to the elastic force of the multiple shock-absorbing springs 41 minus the gravity of multiple moving objects. Adding multiple third springs 623 can provide a certain displacement distance for the second permanent magnet 622, so that a stable suction value can be quickly reached during the falling process of the third permanent magnet 11.

[0052] Embodiment 4:

[0053] like Figure 1-9As shown, the difference between this embodiment and the first embodiment is that: the magnetic ring device 6 is an electromagnetic component 63, including a metal shell 631 arranged at the top center of the fixing platform 5, the inner wall of the metal shell 631 is provided with a wire winding 632, and two connecting wires 633 are connected to one side of the wire winding 632. When the UAV lands, the two connecting wires 633 are energized, and the corresponding magnetic field is generated by the current in the wire winding 632, thereby achieving the same purpose as the permanent magnet. However, after the UAV lands and reaches a stable state, the electromagnetic component 63 can slowly reduce the current when it is turned off, and then the suction force generated between the electromagnetic component 63 and the third permanent magnet 11 can slowly reduce, so that the entire plastic plate 10 can be slowly reset under the elastic force of multiple shock-absorbing springs 41, and then the UAV can be removed, and the fixing of the limiting mechanism 9 can be omitted.

[0054] Working principle: After the drone lands, the sponge pad 13, rubber pad 12 and plastic plate 10 are squeezed, and then the shock-absorbing spring 41 is squeezed through the second telescopic column 8 and multiple first telescopic columns 7. After the drone lands, the entire plastic plate 10 begins to drop, and at the same time, the third permanent magnet 11 slowly contacts the magnetic ring device 6, and as the distance becomes smaller and smaller, the attraction will gradually increase until it reaches a stable state. At this time, the elastic force of the multiple shock-absorbing springs 41 is equal to the suction force between the magnetic ring device 6 and the third permanent magnet 11 plus the suction force between the drone body, sponge pad 13, rubber pad 12, plastic plate 10, second telescopic column 8 and multiple first telescopic columns 7. The gravity generated by the column 7 has a maximum attraction when the third permanent magnet 11 falls to the lowest point. At the same time, the attraction at this time is designed to be roughly equal to the elastic force of multiple shock-absorbing springs 41 minus the gravity of multiple moving objects, so that the lowest point of the fall can be roughly a stable balance point, thereby avoiding the secondary rebound of the drone. After the drone descends and reaches a stable state, the sliding block 902 is pushed to make the multiple diamond-shaped tooth blocks 903 engage with the toothed grooves on the second telescopic column 8, thereby completing the fixation of the second telescopic column 8, avoiding the plastic plate 10 from suddenly bouncing up due to the lack of gravity of the drone after the drone is quickly removed.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cushioning platform for a drone to land in a closed environment, comprising a sponge bottom plate (1), characterized in that: A protective mechanism (2) is installed on the top of the sponge bottom plate (1); a plurality of supporting shell columns (3) are fixedly connected to the center of the top of the sponge bottom plate (1); and a buffer device (4) is installed inside each of the plurality of supporting shell columns (3); The protection mechanism (2) comprises a mounting strip (201) fixedly connected to the top of the sponge bottom plate (1); a nylon protection net (202) is mounted on the top of the mounting strip (201); a plurality of connection balls (203) are connected to the top of the nylon protection net (202); a connection rope (204) is disposed on the top of each of the plurality of connection balls (203); and one end of the plurality of connection ropes (204) is fixed to the ceiling of a house or a garage; The buffer device (4) is a shock absorbing spring (41); A fixing platform (5) is fixedly connected between the tops of the outer walls of the plurality of support shell columns (3), a magnetic ring device (6) is arranged at the center of the top of the fixing platform (5), a second telescopic column (8) and a plurality of first telescopic columns (7) are slidably connected to the tops of the inner walls of the plurality of support shell columns (3), and a limiting mechanism (9) corresponding to the second telescopic column (8) is installed on one side of the top of the fixing platform (5); A plastic plate (10) is fixedly connected to the tops of the plurality of first telescopic columns (7) and second telescopic columns (8); a third permanent magnet (11) is arranged at the bottom center of the plastic plate (10); a rubber pad (12) is arranged on the top of the plastic plate (10); and a sponge pad (13) is arranged on the top of the rubber pad (12); The magnetic ring device (6) is a first permanent magnet (61). After the drone lands, the entire plastic plate (10) begins to descend, and at the same time, the third permanent magnet (11) slowly contacts the first permanent magnet (61). As the distance decreases, the attraction gradually increases until a stable state is reached. At this time, the elastic force of the multiple shock-absorbing springs (41) is equal to the suction force between the first permanent magnet (61) and the third permanent magnet (11) plus the gravity generated by the drone body, the sponge pad (13), the rubber pad (12), the plastic plate (10), the second telescopic column (8) and the multiple first telescopic columns (7); the stroke of the compression limit of the multiple shock-absorbing springs (41) is less than the distance between the first permanent magnet (61) and the third permanent magnet (11).

2. The buffer platform for landing a UAV in a closed environment according to claim 1, characterized in that: The buffer device (4) is a shock absorbing assembly (42), the shock absorbing assembly (42) comprising a first magnetic block (422) and a second magnetic block (423) slidably connected to the inner wall of the supporting shell column (3), the top of the first magnetic block (422) and the bottom of the second magnetic block (423) being fixedly connected to a first spring (421) and a second spring (424), respectively.

3. The buffer platform for landing a UAV in a closed environment according to claim 2, characterized in that: The first magnetic block (422) and the second magnetic block (423) repel each other on their mutually adjacent sides.

4. The buffer platform for landing a UAV in a closed environment according to claim 1, characterized in that: The magnetic ring device (6) is a buffer magnetic ring assembly (62), the buffer magnetic ring assembly (62) comprising a fixed sleeve (621) fixedly connected to the center of the fixed platform (5), a plurality of third springs (623) fixedly connected to the bottom inner surface of the fixed sleeve (621), and a second permanent magnet (622) fixedly connected to the top of the plurality of third springs (623).

5. The buffer platform for landing a UAV in a closed environment according to claim 1, characterized in that: The magnetic ring device (6) is an electromagnetic assembly (63), comprising a metal shell (631) arranged at the top center of the fixing platform (5), a wire winding (632) being arranged on the inner wall of the metal shell (631), and two connecting wires (633) being connected to one side of the wire winding (632).

6. The buffer platform for landing a UAV in a closed environment according to claim 1, characterized in that: The limiting mechanism (9) comprises a connecting sleeve (901), a sliding block (902) being slidably connected to the connecting sleeve (901), and a plurality of diamond-shaped tooth blocks (903) being fixedly connected to the front and rear ends of the sliding block (902) on a side close to the second telescopic column (8).

7. The buffer platform for landing a UAV in a closed environment according to claim 6, characterized in that: A tooth-shaped groove corresponding to the plurality of diamond-shaped tooth blocks (903) is provided in the middle of one side of the second telescopic column (8).

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