Multifunctional unmanned aerial vehicle landing platform for forest protection

Abstract

This invention relates to the field of unmanned aerial vehicle (UAV) technology and discloses a multifunctional UAV take-off and landing platform for forest protection. The platform includes a movable unmanned platform with an internal cavity for accommodating the UAV. A switch plate is hinged to the top of the platform. A landing pad is slidably connected vertically within the cavity. A limiting component for holding the UAV is located within the landing pad. A drive component for controlling the raising and lowering of the landing pad is located within the cavity. Telescopic outriggers and grooves are located at the four corners of the platform's bottom. The telescopic outriggers are embedded in the grooves, and a fixing component is located at the bottom of the platform to secure the outriggers within the grooves. This invention provides a leveling guarantee for UAV take-off and landing, even on complex and uneven terrain, while also enabling UAV storage and transportation.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a multi-functional UAV take-off and landing platform for forest protection. Background Technology

[0002] Drones have been widely used in many fields. With the rapid development of drone technology, agricultural drones are increasingly used in forest protection, such as forest fire monitoring, pest and disease control, and vegetation surveys. Drones require a platform of a certain size for takeoff and landing to ensure their horizontal orientation.

[0003] Utility model patent CN 220501070 U discloses a drone take-off and landing platform, including a first platform plate. The top of the first platform plate has multiple first protrusions, and the tops of the first protrusions are engaged with second protrusions. A telescopic rod and a spring are fixedly connected to the tops of the second protrusions, with the spring located on the outside of the telescopic rod. In this drone take-off and landing platform, the upward movement of the horizontal plate causes the second protrusions to move upward, allowing them to be removed from the slots inside the first protrusions. After all four second protrusions are removed from the first protrusions, the second and third platform plates can be rotated sequentially to unfold the four sides of the drone platform for take-off and landing. This structure is advantageous for unfolding the drone take-off and landing platform, increasing the take-off and landing area.

[0004] However, in the aforementioned device, the first platform plate is used to place on the ground and provide support for the take-off and landing of the drone. But in the process of forest protection, the ground in the wild is usually uneven terrain. The static platform structure cannot dynamically compensate for the terrain undulations and cannot provide support for the drone's attitude level. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-functional drone take-off and landing platform for forest protection, which can ensure the horizontal attitude required for drone take-off and landing in complex and uneven terrain, while also having the functions of drone storage and transportation.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection, comprising a movable unmanned platform, an internal cavity for accommodating the UAV, a switch plate hinged to the top of the unmanned platform, a landing pad slidably connected in the vertical direction in the cavity, a limiting component for clamping the UAV in the landing pad, a drive component for controlling the lifting and lowering of the landing pad in the cavity, telescopic legs and grooves at the four corners of the bottom of the unmanned platform, the telescopic legs being embedded in the grooves, and a fixing component for fixing the telescopic legs in the grooves at the bottom of the unmanned platform.

[0007] By adopting the above technical solution, when the drone needs to perform a mission, the unmanned platform carrying the drone arrives at the predetermined takeoff position. Then, the four telescopic outriggers are adjusted according to the terrain at the takeoff position to keep the unmanned platform and the landing pad in a horizontal state. Then, the switch is opened, the drive component controls the landing pad to rise to a high position, the limit component opens, detaches from the drone's horizontal landing gear, and the drone is started and flies out to perform the mission.

[0008] A further embodiment of the present invention is that the drive assembly includes a drive rod rotatably connected to the unmanned platform in a vertical direction, the drive rod is provided with threads, the drive rod is threadedly connected to one end of the landing pad, and a drive motor is fixedly connected to the bottom of the drive rod, and the drive motor is fixedly connected to the unmanned platform.

[0009] By adopting the above technical solution, the drive motor controls the drive rod to rotate, thereby moving the helipad that is threadedly connected to the drive rod upward, so that the helipad moves to a high position.

[0010] A further feature of the present invention is that a vertical guide rod is fixedly connected inside the unmanned platform, the guide rod passes through the helipad and is slidably connected to the helipad, and the guide rod and the drive rod are located at opposite ends of the helipad.

[0011] By adopting the above technical solution, the guide rod provides a guide wire limit function for the lifting and lowering of the helipad.

[0012] A further configuration of the present invention is as follows: a rotating shaft is rotatably connected to the top of the unmanned platform; one end of the switch plate is fixedly connected to the rotating shaft; the rotating shaft is perpendicular to the drive rod and is located above the drive rod; a first bevel gear is fixedly connected to the top of the drive rod; a second bevel gear is fixedly connected to the rotating shaft along the circumferential direction; the first bevel gear and the second bevel gear mesh; when the landing pad is located at the bottom of the cavity, the switch plate is closed in the unmanned platform.

[0013] By adopting the above technical solution, the drive motor controls the drive rod to rotate, causing the landing pad to rise. Under the action of the first and second bevel gears, the shaft rotates, gradually opening the switch plate and exposing the UAV for subsequent takeoff operations.

[0014] A further configuration of the present invention is as follows: the limiting component includes a fixed plate, a sliding plate, and a limiting plate symmetrically arranged at both ends of the helipad. The fixed plate, sliding plate, and limiting plate are all arranged parallel to the rotating shaft. The fixed plate is fixedly connected to the helipad and is located near the edges of both ends of the helipad. The sliding plate is located between the fixed plate and the limiting plate and is slidably connected to the helipad. The fixed plate and the sliding plate are connected by a first spring, and the sliding plate and the limiting plate are connected by a second spring. A control component for controlling the two sliding plates to move closer or further apart is provided on the inner wall of the cavity.

[0015] By adopting the above technical solution, the control components control the sliding plates to move closer to each other, thereby using the second spring to clamp and fix the horizontal legs of the drone with the limiting plate, preventing the drone from being damaged by contact and collision with the inner wall of the cavity during the transportation of the drone.

[0016] A further configuration of the present invention is as follows: the control assembly includes control rods disposed on the inner walls of both sides of the cavity, and four control rods are provided. The bottoms of two control rods located on the same side of the inner wall of the cavity are inclined towards the central axis of the cavity. Inclined blocks are fixedly connected to both ends of the sliding plate. The inclination angle of the inclined blocks is the same as the inclination angle of the control rods. The first spring controls the inclined blocks to always be in contact with the control rods. L-shaped blocks are symmetrically fixedly connected to both ends of the bottom of the sliding plate. The L-shaped blocks are located on both sides of the helipad and are slidably connected to the helipad.

[0017] By adopting the above technical solution, since the bottom of the control rod is inclined towards the central axis of the cavity and the inclined blocks at both ends of the sliding plate are always in contact with the control rod, the distance between the two sliding plates gradually increases during the process of the drive motor controlling the drive rod to rotate and causing the landing pad to rise, thereby changing the state of the limit plate from pressing against the horizontal landing frame of the UAV to moving away from the horizontal landing frame.

[0018] A further configuration of the present invention is as follows: the telescopic outrigger includes a square block embedded in a groove and a telescopic cylinder fixedly connected to the bottom of the square block, and a circular floor mat is fixedly connected to the output end of the telescopic cylinder.

[0019] By adopting the above technical solution, the height of the circular ground mat is controlled by the telescopic cylinder according to the terrain at the take-off position, thereby adjusting the length of each telescopic outrigger, so as to keep the unmanned platform and the ground mat in a horizontal state and ensure the attitude level of the UAV during take-off and landing.

[0020] A further configuration of the present invention is as follows: the fixing component includes movable plates symmetrically arranged at both ends of the unmanned platform, a connecting rod hinged to the center of the movable plates, and a rotating rod hinged to the end of the connecting rod away from the movable plates. A rotating motor is fixedly connected in the unmanned platform, and the output end of the rotating motor is fixedly connected to the center of the rotating rod. A guide rail is provided in the unmanned platform, and the movable plates are slidably connected to the guide rail. The movable plates are arranged parallel to the rotating shaft. Fixed rods are provided at both ends of the movable plates away from the rotating rod. The fixed rods are horizontally arranged, and a transverse groove for the fixed rods to be inserted is provided in the square block.

[0021] By adopting the above technical solution, all four square blocks are inserted into the grooves, and the rotating motor controls the rotating rod to rotate. Through the transmission of the connecting rod, the two moving plates are moved away from each other, and the fixed rod is inserted into the horizontal groove of the square block. This achieves the fixation of the telescopic outrigger in the unmanned platform, making it convenient to replace and repair the telescopic outrigger.

[0022] A further feature of the present invention is that an opening is provided in the groove, and the fixing rod passes through the opening and is embedded in the transverse groove.

[0023] A further feature of the present invention is that the bottom of the circular mat is provided with several anti-slip protrusions.

[0024] By adopting the above technical solution, the friction between the circular mat and the ground is increased, thereby further improving the stability of the unmanned platform.

[0025] The beneficial effects of this invention are:

[0026] 1. In this invention, the height of the circular ground mat can be controlled by the telescopic cylinder according to the terrain at the take-off position, thereby adjusting the length of each telescopic outrigger, so as to keep the unmanned platform and the ground mat in a horizontal state, and ensure the attitude level of the UAV during take-off and landing when facing complex and uneven terrain; at the same time, due to the design of the fixed components, the telescopic outriggers can be disassembled, thereby facilitating their replacement and maintenance.

[0027] 2. In this invention, the helipad is used to provide support for the take-off and landing of the drone. When the helipad is located at a low position in the cavity, the limiting component can clamp and fix the drone, avoiding damage caused by the drone contacting and colliding with the inner wall of the cavity during the transportation of the drone by the unmanned platform. This enables the unmanned platform to realize the functions of storing and transporting drones.

[0028] 3. In this invention, the drive motor starts and controls the drive rod to rotate, thereby moving the landing pad, which is threadedly connected to the drive rod, upward to a high position. During this process, the first and second bevel gears mesh, causing the shaft to rotate and the switch plate to gradually open. Simultaneously, as the bottom of the control rod tilts towards the central axis of the cavity and the inclined blocks at both ends of the sliding plate remain in contact with the control rod, the distance between the two sliding plates gradually increases, causing the limiting plate to change from being pressed against the UAV's horizontal landing gear to being away from it. In the process of the drive motor controlling the rotation of the drive rod, the three effects of raising the landing pad, opening the switch plate, and opening the limiting assembly are achieved simultaneously. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the structure inside the cavity of the present invention.

[0032] Figure 3 yes Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0033] Figure 4 This is a schematic cross-sectional view of the present invention.

[0034] Figure 5 This is a schematic diagram of the fixed component structure of the present invention.

[0035] In the diagram: 1. Unmanned platform; 2. Cavity; 3. Switch panel; 4. Helipad; 5. Limiting assembly; 51. Fixing plate; 52. Sliding plate; 53. Limiting plate; 54. First spring; 55. Second spring; 56. Control rod; 57. Inclined block; 58. L-shaped block; 6. Drive assembly; 61. Drive rod; 62. Drive motor; 63. Guide rod; 7. Telescopic outrigger; 71. Square block; 72. Telescopic cylinder; 73. Circular ground mat; 8. Groove; 9. Fixing assembly; 91. Moving plate; 92. Connecting rod; 93. Rotating rod; 94. Rotating motor; 95. Guide rail; 95. Fixing rod; 96. Horizontal groove; 10. Rotating shaft; 11. First bevel gear; 12. Second bevel gear; 13. Anti-slip protrusions. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Example: Please refer to Figure 1-5 A multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection includes a movable UAV platform 1. The UAV platform 1 has a cavity 2 for accommodating the UAV. A switch plate 3 is hinged to the top of the UAV platform 1. A landing pad 4 is slidably connected vertically within the cavity 2. A limiting component 5 for clamping the UAV is installed in the landing pad 4. A drive component 6 for controlling the lifting and lowering of the landing pad 4 is installed in the cavity 2. The drive component 6 includes a drive rod 61 rotatably connected vertically to the UAV platform 1. The drive rod 61 has threads and is threaded to one end of the landing pad 4. A drive motor 62 is fixedly connected to the bottom of the drive rod 61 and is fixedly connected to the UAV platform 1. A vertical guide rod 63 is fixedly connected inside the UAV platform 1, passing through the landing pad 4 and slidably connected to it. The poles 61 are located at both ends of the landing pad 4. The guide rod 63 provides a guide wire limit for the lifting and lowering of the landing pad 4. The unmanned platform 1 is equipped with telescopic legs 7 and grooves 8 at the four corners of its bottom. The telescopic legs 7 are embedded in the grooves 8. The bottom of the unmanned platform 1 is equipped with a fixing component 9 to fix the telescopic legs 7 in the grooves 8. When the UAV needs to perform a mission, the unmanned platform 1 carries the UAV to the predetermined take-off position. Then, the four telescopic legs 7 are adjusted according to the terrain at the take-off position to keep the landing pad 4, the unmanned platform 1, and the landing pad 4 in a horizontal state. Then, the switch plate 3 is opened, and the drive motor 62 controls the drive rod 61 to rotate, thereby moving the landing pad 4, which is threadedly connected to the drive rod 61, upward. The landing pad 4 moves to a high position, the limiting component 5 is opened, and it is disengaged from the UAV's horizontal landing gear. The UAV is then started and flies out to perform the mission.

[0038] It is important to know that cavity 2 contains a charging unit for replenishing the power of the drone and a liquid refilling unit.

[0039] Furthermore, a rotating shaft 10 is rotatably connected to the top of the unmanned platform 1. One end of the switch plate 3 is fixedly connected to the rotating shaft 10. The rotating shaft 10 is perpendicular to the drive rod 61 and is located above the drive rod 61. A first bevel gear 11 is fixedly connected to the top of the drive rod 61, and a second bevel gear 12 is fixedly connected to the rotating shaft 10 along its circumferential direction. The first bevel gear 11 and the second bevel gear 12 mesh. When the landing pad 4 is located at the bottom of the cavity 2, the switch plate 3 is closed in the unmanned platform 1. The drive motor 62 controls the drive rod 61 to rotate, causing the landing pad 4 to rise. Under the action of the first bevel gear 11 and the second bevel gear 12, the rotating shaft 10 rotates, causing the switch plate 3 to gradually open, exposing the UAV for subsequent takeoff operations.

[0040] Furthermore, the limiting component 5 includes a fixed plate 51, a sliding plate 52, and a limiting plate 53 symmetrically arranged at both ends of the landing pad 4. The fixed plate 51, sliding plate 52, and limiting plate 53 are all arranged parallel to the rotating shaft 10. The fixed plate 51 is fixedly connected to the landing pad 4 and is located near the edges of both ends of the landing pad 4. The sliding plate 52 is located between the fixed plate 51 and the limiting plate 53 and is slidably connected to the landing pad 4. The fixed plate 51 and the sliding plate 52 are connected by a first spring 54, and the sliding plate 52 and the limiting plate 53 are connected by a second spring 55. A control component is provided on the inner wall of the cavity 2 to control the two sliding plates 52 to move closer or further apart. The control component controls the sliding plates 52 to move closer together, thereby using the second spring 55 to clamp and fix the horizontal landing gear of the UAV, preventing the UAV from contacting and colliding with the inner wall of the cavity 2 during the transport of the UAV by the unmanned platform 1.

[0041] Furthermore, the control assembly includes four control rods 56 located on the inner walls of both sides of the cavity 2. The bottoms of two control rods 56 located on the same side of the inner wall of the cavity 2 are inclined towards the central axis of the cavity 2. Both ends of the sliding plate 52 are fixedly connected to tilting blocks 57. The tilting angle of the tilting blocks 57 is the same as the tilting angle of the control rods 56. The first spring 54 controls the tilting blocks 57 to always be in contact with the control rods 56. The bottom ends of the sliding plate 52 are symmetrically fixedly connected to L-shaped blocks 58. The L-shaped blocks 58 are located on both sides of the landing pad 4 and are slidably connected to the landing pad 4. Since the bottoms of the control rods 56 are inclined towards the central axis of the cavity 2 and the tilting blocks 57 at both ends of the sliding plate 52 are always in contact with the control rods 56, as the drive motor 62 controls the drive rod 61 to rotate and cause the landing pad 4 to rise, the distance between the two sliding plates 52 gradually increases, thereby changing the state of the limiting plate 53 from pressing against the horizontal landing gear of the UAV to moving away from the horizontal landing gear.

[0042] Furthermore, the telescopic outriggers 7 include a square block 71 embedded in the groove 8 and a telescopic cylinder 72 fixedly connected to the bottom of the square block 71. A circular ground mat 73 is fixedly connected to the output end of the telescopic cylinder 72. According to the terrain at the takeoff position, the telescopic cylinder 72 controls the height of the circular ground mat 73, thereby adjusting the length of each telescopic outrigger 7, so as to keep the unmanned platform 1 and the landing pad 4 in a horizontal state and ensure the attitude level of the UAV during takeoff and landing.

[0043] Furthermore, the fixed assembly 9 includes movable plates 91 symmetrically arranged at both ends of the unmanned platform 1, a connecting rod 92 hinged to the center of the movable plates 91, and a rotating rod 93 hinged to the end of the connecting rod 92 away from the movable plates 91. A rotating motor 94 is fixedly connected to the unmanned platform 1, and the output end of the rotating motor 94 is fixedly connected to the center of the rotating rod 93. A guide rail 95 is provided in the unmanned platform 1, and the movable plates 91 are slidably connected to the guide rail 95. The movable plates 91 are arranged parallel to the rotating shaft 10, and the movable plates 91 are located away from the rotating shaft 10. Fixed rods 95 are provided at both ends of one side of the rotating rod 93. The fixed rods 95 are horizontally positioned. The square block 71 is provided with a horizontal groove 96 for the fixed rods 95 to be inserted. All four square blocks 71 are inserted into the groove 8. The rotating motor 94 controls the rotating rod 93 to rotate. Through the transmission of the connecting rod 92, the two moving plates 91 are moved away from each other, so that the fixed rods 95 are inserted into the horizontal grooves 96 of the square block 71. This fixes the position of the telescopic outrigger 7 in the unmanned platform 1, making it convenient to replace and repair the telescopic outrigger 7.

[0044] Furthermore, an opening is provided in the groove 8, through which the fixing rod 95 passes and is embedded in the transverse groove 96.

[0045] Furthermore, the bottom of the circular mat 73 is provided with several anti-slip protrusions 13 to increase the friction between the circular mat 73 and the ground, thereby further improving the stability of the unmanned platform 1.

[0046] Working principle of this invention:

[0047] When the drone needs to perform a mission, the unmanned platform 1 carries the drone to the predetermined take-off position. According to the terrain at the take-off position, the telescopic cylinder 72 controls the height of the circular ground mat 73, thereby adjusting the length of each telescopic outrigger 7, so as to keep the unmanned platform 1 and the landing pad 4 in a horizontal state, providing a basis for the subsequent release and recovery of the drone.

[0048] Release process: The drive motor 62 starts, controlling the drive rod 61 to rotate clockwise, thereby causing the landing pad 4, which is threadedly connected to the drive rod 61, to gradually move upward, moving the landing pad 4 to a high position. During this process, due to the meshing of the first bevel gear 11 and the second bevel gear 12, the rotating shaft 10 rotates, causing the switch plate 3 to gradually open. Simultaneously, during this process, because the bottom of the control rod 56 is inclined towards the central axis of the cavity 2 and the inclined blocks 57 at both ends of the sliding plate 52 are always in contact with the control rod 56, the distance between the two sliding plates 52 gradually increases, thereby causing the limiting plate 53 to change from a state of pressing against the UAV's horizontal landing gear to a state of moving away from the horizontal landing gear. The UAV starts and flies out to perform its mission.

[0049] Recovery Process: After the UAV completes its mission, the unmanned platform 1 waits for the UAV to return at the designated location. At this time, the switch plate 3 is open and in the recovery waiting stage. After the UAV is parked and stable on the landing pad 4, the drive motor 62 starts and controls the drive rod 61 to rotate counterclockwise, thereby causing the landing pad 4, which is threaded to the drive rod 61, to gradually move downward. During this process, the first bevel gear 11 and the second bevel gear 12 mesh with each other, causing the rotating shaft 10 to rotate, causing the switch plate 3 to gradually close. At the same time, during this process, because the bottom of the control rod 56 is tilted towards the central axis of the cavity 2 and the tilting blocks 57 at both ends of the sliding plate 52 are always in contact with the control rod 56, the distance between the two sliding plates 52 gradually decreases, thereby causing the limiting plate 53 to change from a state away from the UAV's horizontal landing gear to a state close to the horizontal landing gear, thus limiting the position of the UAV.

Claims

1. A multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection, comprising a mobile unmanned platform (1), characterized in that: The unmanned platform (1) has a cavity (2) inside to accommodate the drone. A switch plate (3) is hinged to the top of the unmanned platform (1). A landing pad (4) is slidably connected in the vertical direction in the cavity (2). A limiting component (5) for clamping the drone is provided in the landing pad (4). A drive component (6) for controlling the lifting and lowering of the landing pad (4) is provided in the cavity (2). Telescopic legs (7) and grooves (8) are provided at the four corners of the bottom of the unmanned platform (1). The telescopic legs (7) are embedded in the grooves (8). A fixing component (9) for fixing the telescopic legs (7) in the grooves (8) is provided at the bottom of the unmanned platform (1).

2. The multi-functional drone take-off and landing platform for forest protection according to claim 1, characterized in that: The drive assembly (6) includes a drive rod (61) that is rotatably connected to the unmanned platform (1) in the vertical direction. The drive rod (61) is threaded and threaded to one end of the landing pad (4). A drive motor (62) is fixedly connected to the bottom of the drive rod (61) and the drive motor (62) is fixedly connected to the unmanned platform (1).

3. The multi-functional drone take-off and landing platform for forest protection according to claim 2, characterized in that: The unmanned platform (1) is fixedly connected with a vertical guide rod (63), which passes through the helipad (4) and is slidably connected to the helipad (4). The guide rod (63) and the drive rod (61) are located at the two ends of the helipad (4) respectively.

4. The multi-functional drone take-off and landing platform for forest protection according to claim 2, characterized in that: The unmanned platform (1) is rotatably connected to a rotating shaft (10) at the top. One end of the switch plate (3) is fixedly connected to the rotating shaft (10). The rotating shaft (10) is perpendicular to the drive rod (61) and the rotating shaft (10) is located above the drive rod (61). A first bevel gear (11) is fixedly connected to the top of the drive rod (61). A second bevel gear (12) is fixedly connected to the rotating shaft (10) along the circumferential direction. The first bevel gear (11) and the second bevel gear (12) mesh. When the landing pad (4) is located at the bottom of the cavity (2), the switch plate (3) is closed in the unmanned platform (1).

5. A multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection according to claim 2, characterized in that: The limiting component (5) includes a fixed plate (51), a sliding plate (52) and a limiting plate (53) symmetrically arranged at both ends of the apron (4). The fixed plate (51), the sliding plate (52) and the limiting plate (53) are all arranged parallel to the rotating shaft (10). The fixed plate (51) is fixedly connected to the apron (4). The fixed plate (51) is close to the edges of both ends of the apron (4). The sliding plate (52) is located between the fixed plate (51) and the limiting plate (53). The sliding plate (52) and the limiting plate (53) are slidably connected to the apron (4). The fixed plate (51) and the sliding plate (52) are connected by a first spring (54). The sliding plate (52) and the limiting plate (53) are connected by a second spring (55). A control component is provided on the inner wall of the cavity (2) to control the two sliding plates (52) to move closer or further apart.

6. A multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection according to claim 5, characterized in that: The control assembly includes control rods (56) located on the inner walls of both sides of the cavity (2). There are four control rods (56). The bottoms of two control rods (56) located on the same side of the inner wall of the cavity (2) are inclined towards the central axis of the cavity (2). Both ends of the sliding plate (52) are fixedly connected to tilting blocks (57). The tilting angle of the tilting blocks (57) is the same as the tilting angle of the control rods (56). The first spring (54) controls the tilting blocks (57) to always be in contact with the control rods (56). The bottom ends of the sliding plate (52) are symmetrically fixedly connected to L-shaped blocks (58). The L-shaped blocks (58) are located on both sides of the apron (4) and are slidably connected to the apron (4).

7. A multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection according to claim 4, characterized in that: The telescopic outrigger (7) includes a square block (71) embedded in a groove (8) and a telescopic cylinder (72) fixedly connected to the bottom of the square block (71). A circular floor mat (73) is fixedly connected to the output end of the telescopic cylinder (72).

8. A multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection according to claim 7, characterized in that: The fixed component (9) includes a movable plate (91) symmetrically arranged at both ends of the unmanned platform (1), a connecting rod (92) hinged to the center of the movable plate (91), and a rotating rod (93) hinged to the end of the connecting rod (92) away from the movable plate (91). A rotating motor (94) is fixedly connected in the unmanned platform (1). The output end of the rotating motor (94) is fixedly connected to the center of the rotating rod (93). A guide rail (95) is provided in the unmanned platform (1). The movable plate (91) is slidably connected to the guide rail (95). The movable plate (91) is arranged parallel to the rotating shaft (10). Fixed rods (95) are provided at both ends of the side of the movable plate (91) away from the rotating rod (93). The fixed rods (95) are arranged horizontally. A transverse groove (96) for the fixed rods (95) to be inserted is provided in the square block (71).

9. A multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection according to claim 8, characterized in that: An opening is provided in the groove (8), and the fixing rod (95) passes through the opening and is embedded in the transverse groove (96).

10. A multi-functional unmanned aerial vehicle (UAV) take-off and landing platform for forest protection according to claim 7, characterized in that: The bottom of the circular floor mat (73) is provided with several anti-slip protrusions (13).

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