Forest fire extinguishing device based on unmanned aerial vehicle

Abstract

The forest fire extinguishing device comprises an unmanned aerial vehicle body, an emitter is arranged at the bottom of the unmanned aerial vehicle body, a connecting column is connected to the upper portion of the emitter body, a mounting block is connected to the upper end of the connecting column, and a containing groove matched with the mounting block is formed in the bottom of the unmanned aerial vehicle body; a cavity is formed in the mounting block, at least one fixing plate is arranged on the top wall of the cavity, a through hole allowing the fixing plate to pass through is formed in the mounting block, a matching groove corresponding to the fixing plate is formed in the unmanned aerial vehicle body, and the matching groove communicates with the containing groove; a vertical limiting rod is arranged in the cavity, the limiting rod penetrates through the top surface of the mounting block and is in sliding insertion connection with the mounting block, a matching groove matched with the limiting rod is formed in the unmanned aerial vehicle body, and the matching groove communicates with the containing groove; a driving assembly is further arranged in the cavity and can work to drive the limiting rod to be inserted into the limiting groove and the fixing plate to be inserted into the matching groove at the same time. The method has the effect of improving the efficiency of replacing the emitter.

Description

Technical Field

[0001] The present application relates to the field of fire extinguishing devices, and in particular to a forest fire extinguishing device based on a drone. Background Art

[0002] Firefighting drones are usually used for high-rise firefighting operations. Firefighting drones include a drone body with a launcher installed below the drone body. The launcher is usually fixed below the drone body by bolts. Different types of fire-fighting bombs require corresponding different launchers. When the launcher needs to be replaced, the operator needs to unscrew the bolts fixing the launcher one by one to separate the launcher from the drone body. When fixing the new launcher, the bolts used for fixing need to be tightened one by one. As a result, it takes a long time to replace the launcher and the efficiency of replacing the launcher is low. Summary of the invention

[0003] In order to improve the efficiency of replacing the transmitter, the present application provides a forest fire extinguishing device based on a drone.

[0004] The present application provides a forest fire extinguishing device based on a drone using the following technical solution: A forest fire extinguishing device based on a drone comprises a drone body, a transmitter is arranged at the bottom of the drone body, a connecting column is connected above the transmitter body, a mounting block is connected at the upper end of the connecting column, and a receiving groove adapted to the mounting block is opened at the bottom of the drone body; The mounting block is provided with a cavity, the top wall of the cavity is provided with at least one fixing plate, the mounting block is provided with a through hole for the fixing plate to pass through, the drone body is provided with a matching groove corresponding to the fixing plate, and the matching groove is connected with the receiving groove; A vertical limit rod is provided in the cavity, the limit rod passes through the top surface of the mounting block and is slidably plugged with the mounting block, and a matching groove adapted to the limit rod is provided in the drone body, and the matching groove is communicated with the receiving groove; A driving assembly is also provided in the cavity, and the driving assembly can simultaneously drive the limiting rod to be inserted into the limiting groove and the fixing plate to be inserted into the matching groove.

[0005] By adopting the above technical solution, when installing the transmitter on the drone body, first align the limit rod with the limit groove, then insert the mounting block into the accommodating groove, and when the mounting block is plugged into place, control the drive assembly to operate so that the fixing block and the limit rod move simultaneously, the fixing block moves to the matching groove, and the limit rod moves to the limit groove, so that the mounting block can be connected and fixed to the drone body, that is, the transmitter can be installed on the drone body; when the transmitter needs to be removed, the operator controls the drive assembly to operate so that the fixing plate and the limit rod can be reset at the same time, thereby releasing the fixation of the mounting block and the drone body, and the operator can separate the mounting block and the transmitter from the drone body; the steps when replacing the transmitter are reduced, and the efficiency of replacing the transmitter is improved.

[0006] Optionally, the driving assembly includes a driving plate fixedly connected to the lower end of the limiting rod, the driving plate is located at a position of the fixed plate close to the middle of the cavity, a hinged rod is hinged on the fixed plate and arranged along the sliding direction of the fixed plate in the length direction, the hinged rod is hinged to the driving plate, a limiting spring is connected to one side of the fixed plate, and the limiting spring is fixed to the top wall of the cavity; The cavity is also slidably connected with a power plate located below the driving plate, the upper surface of the power plate is inclined upward in a direction away from the power plate, one side of the power plate is connected with a return spring, the return spring is connected to the cavity wall of the cavity, the lower side of the power plate is connected with a pull rope, one end of the pull rope passes through the mounting block and extends outside the mounting block, the end of the pull rope located outside the mounting block is connected with a lock, and the lower surface of the mounting block is connected with a fixing ring.

[0007] By adopting the above technical solution, in the initial state, the limit spring makes the fixed plate located in the cavity. When the mounting block is inserted into the accommodating groove, the operator pulls the pull rope, and the pull rope drives the higher side of the power plate to move toward the bottom of the driving plate. The power plate pushes the driving plate and the limit rod to move upward, so that the limit rod is gradually inserted into the limit groove; at the same time, the power plate also compresses the reset spring, and the driving plate moves upward to drive the hinged rod to rotate, so that the upper ends of the two hinged rods move away from each other, so that the hinged rod can push the fixed plate to move into the matching groove, and the fixed plate moves and causes the limit spring to deform.

[0008] When the fixing plate and the limiting rod are moved into place, the lock buckle moves to the position of the matching ring. At this time, the lock buckle is buckled on the fixing ring. The lock buckle cooperates with the fixing ring to limit the power plate, the driving plate, the fixing plate and the limiting rod. At this time, the UAV body and the mounting block are fixed; when the mounting block needs to be removed from the UAV body, the lock buckle is removed from the fixing ring. At this time, the reset spring and the limiting spring both restore their deformation, so that the power plate, the driving plate, the fixing plate and the limiting rod are all moved to the initial position. At this time, the mounting plate and the transmitter can be removed from the UAV body.

[0009] Optionally, a slider is connected to the upper surface of the fixed plate, a sliding groove adapted to the slider is provided on the top wall of the cavity, the length direction of the sliding groove is arranged along the sliding direction of the fixed plate, and the slider is slidably inserted in the sliding groove.

[0010] By adopting the above technical solution, the sliding block cooperates with the sliding groove to enable the fixing plate to slide and cooperate with the mounting block.

[0011] Optionally, a sliding block is connected to the lower surface of the power plate, and a sliding groove adapted to the sliding block is opened on the bottom cavity wall of the cavity. The length direction of the sliding groove is set along the inclined direction of the upper surface of the power plate, and the sliding block is slidably inserted in the corresponding sliding groove.

[0012] By adopting the above technical solution, the sliding block cooperates with the sliding groove, so that the power plate and the mounting block are slidably matched.

[0013] Optionally, the connecting column is rotatably connected to the mounting block, and a rotating component for controlling the rotating angle of the connecting column is also provided in the cavity.

[0014] By adopting the above technical solution, the operator can adjust the tilt angle of the launcher according to actual conditions, thereby improving the applicability of the launcher.

[0015] Optionally, a transmission wheel is provided in the cavity, and the lower end face of the transmission wheel is connected to at least two connecting blocks, the distance between the axis of the transmission wheel and the two connecting blocks is consistent, and an annular connecting groove is opened on the bottom cavity wall of the cavity, and the connecting block is slidably inserted in the connecting groove, and the lower end face of the transmission wheel is connected to a support rod that passes through the mounting block and is connected to the connecting column, and the support rod, the connecting groove, the transmission wheel and the connecting column are coaxial.

[0016] By adopting the above technical solution, the connecting rod cooperates with the connecting groove, so that the transmission wheel cooperates with the installation block in rotation, and the transmission wheel cooperates with the support rod, so that the connecting column and the transmitter both cooperate with the installation block in rotation.

[0017] Optionally, there are multiple fixing rings, which are arranged along the sliding direction of the power plate, the transmission wheel is a gear, and the rotating assembly includes a driving wheel rotatably connected to the bottom wall of the cavity, the driving wheel is meshed with the transmission wheel, and the diameter of the driving wheel is larger than the diameter of the transmission wheel, and a rack meshed with the driving wheel is connected to the side of the power plate away from the pull rope, the length direction of the rack is set along the sliding direction of the power plate, and the upper surface of the rack is flush with the highest point of the power plate.

[0018] By adopting the above technical solution, when the operator pulls the pull rope, the power plate drives the rack to move. When the fixed plate and the limit rod are plugged into place, the drive plate contacts the rack. As the pull rope continues to move, the rack drives the transmission wheel and the launcher to rotate through the active wheel. The operator observes the angle of the launcher. When the launcher moves to a suitable angle, the operator buckles the lock on the fixed ring at the corresponding position. Each fixed ring corresponds to a different tilt angle of the launcher.

[0019] Optionally, a protruding rod is connected to the lower side of the power plate, and one end of the protruding rod passes through the mounting block and extends out of the mounting block.

[0020] By adopting the above technical solution, when the operator needs to pull the power plate to move, the convex rod can be pulled to move, so that the operator can apply force better.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: By setting up the drone body, the mounting block, the generator, the connecting column, the fixing plate, the limiting rod and the driving assembly, the efficiency of replacing the transmitter is improved; By arranging a driving plate, a limiting spring, a hinged rod, a power plate, a reset spring, a pull rope, a lock buckle and a fixing ring, the limiting rod and the fixing plate can be driven to move or reset at the same time; By setting a transmission wheel, a driving wheel and a rack, the launcher can be controlled to rotate to a certain angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the fire extinguishing device according to an embodiment of the present application.

[0023] Figure 2 It is a cross-sectional view of the internal structure of the mounting block according to an embodiment of the present application.

[0024] Figure 3 It is a cross-sectional view showing the connection relationship between the power plate and the mounting block according to an embodiment of the present application.

[0025] Figure 4 It is a cross-sectional view showing the connection relationship between the transmission wheel and the mounting block according to an embodiment of the present application.

[0026] Explanation of the reference numerals: 1. UAV body; 11. Receiving slot; 12. Matching slot; 13. Limiting slot; 2. Launcher; 21. Connecting column; 22. Support rod; 23. Transmission wheel; 24. Connecting block; 3. Mounting block; 31. Cavity; 32. Slide slot; 33. Sliding slot; 34. Connecting slot; 4. Fixed plate; 41. Sliding block; 5. Driving assembly; 51. Driving plate; 52. Articulated rod; 53. Power plate; 531. Sliding block; 54. Limiting spring; 55. Pull rope; 56. Lock buckle; 57. Fixed ring; 58. Reset spring; 59. Protruding rod; 6. Limiting rod; 7. Rotating assembly; 71. Driving wheel; 72. Rack. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] The present application embodiment discloses a forest fire extinguishing device based on a drone. Figure 1 and Figure 2 , including a drone body 1 and a transmitter 2, the top of the transmitter 2 is fixedly connected with a connecting column 21, a mounting block 3 is provided below the drone body 1, and the connecting column 21 is connected to the bottom of the mounting block 3; a receiving groove 11 for receiving the mounting block 3 is opened at the bottom of the drone.

[0029] A cavity 31 is provided in the mounting block 3, and a plurality of fixing plates 4 are provided in the cavity 31. In the present embodiment, there are two fixing plates 4, and sliders 41 are fixedly connected to the upper surfaces of the two fixing plates 4. A slide groove 32 corresponding to the slider 41 is provided on the top wall of the cavity 31, and the slider 41 is slidably inserted in the slide groove 32. A through hole for the fixing plate 4 to pass through is also provided on the cavity 31; a matching groove 12 corresponding to the fixing plate 4 is provided on the drone, and the matching groove 12 is connected to the accommodating groove 11.

[0030] A driving assembly 5 for driving the fixed plate 4 to move into the matching groove 12 is provided in the cavity 31, and the driving assembly 5 includes a driving plate 51 arranged in the cavity 31, and the driving plate 51 is located between the two fixed plates 4; the upper surface of the driving plate 51 is vertically fixedly connected to a limiting rod 6, and the cross-section of the limiting rod 6 is rectangular. A limiting groove 13 adapted to the limiting rod 6 is provided on the drone body 1, and the limiting groove 13 is connected to the cavity 31. The limiting rod 6 cooperates with the limiting groove 13 to limit the mounting block 3 and the drone body 1, reducing the relative rotation between the two, thereby stabilizing the angle of the launcher 2 and reducing the occurrence of the launcher 2 changing its angle on its own.

[0031] A hinged rod 52 corresponding to the fixed plate 4 is hinged on the driving plate 51, and the end of the hinged rod 52 away from the driving plate 51 is hinged to the corresponding fixed plate 4, and the ends of the two hinged rods 52 close to the fixed plate 4 are inclined upward and away from each other; a limiting spring 54 is fixedly connected to the side walls of the two sliding blocks 41 close to each other, and the end of the limiting spring 54 away from the sliding block 41 is fixed to the groove wall corresponding to the end of the sliding groove 32, and the limiting spring 54 limits the fixed plate 4 so that the fixed plate 4 is located in the cavity 31, and at the same time, there is a gap between the lower surface of the driving plate 51 and the bottom wall of the cavity 31.

[0032] Reference Figure 2 and Figure 3 A power plate 53 is provided at the bottom of the cavity 31, and a sliding block 531 is fixedly connected to the lower surface of the power plate 53. A sliding groove 33 adapted to the sliding block 531 is opened on the bottom wall of the cavity 31, and the length directions of the sliding groove 33 and the sliding groove 32 are consistent; the upper surface of the power plate 53 is gradually inclined along the length direction of the sliding groove 33, so that one side of the power plate 53 is higher than the other side of the power plate 53.

[0033] A pull rope 55 is fixedly connected to the lower side of the power plate 53, one end of the pull rope 55 passes through the mounting block 3 and is slidably plugged with the mounting block 3, a lock buckle 56 is installed at the end of the pull rope 55 located outside the mounting block 3, and a fixing ring 57 is fixedly connected to the lower surface of the mounting block 3, and the lock buckle 56 can be fixed to the fixing ring 57; a return spring 58 is fixedly connected to the lower side of the power plate 53. In this embodiment, the number of the return springs 58 is two, and one end of the return spring 58 away from the power plate 53 is fixed to the cavity wall of the cavity 31, and the return spring 58 limits the power plate 53 so that the driving plate 51 is located in front of the power plate 53, and the lower side of the power plate 53 faces forward, and the front is the forward direction of the power plate 53.

[0034] In order to make it easier for the operator to apply force, a horizontally arranged protruding rod 59 is fixedly connected to the lower side of the driving plate 51. The protruding rod 59 passes through the mounting block 3 and is slidably plugged into the mounting block 3. When installing the launcher 2, the operator first aligns the limiting rod 6 with the limiting groove 13, and then inserts the mounting block 3 into the receiving groove 11. When the mounting block 3 is plugged into place, the fixing plate 4 is aligned with the matching groove 12.

[0035] The operator pulls the protruding rod 59 to move the higher side of the power plate 53 toward the direction close to the driving plate 51. The power plate 53 moves and compresses the reset spring 58. As the power plate 53 moves, the power plate 53 pushes the driving plate 51 and the limiting rod 6 to move upward, so that the limiting rod 6 is inserted into the limiting groove 13. The limiting rod 6 cooperates with the limiting groove 13 to limit the UAV body 1 and the mounting block 3, thereby reducing the relative rotation between the UAV body 1 and the mounting block 3.

[0036] When the driving plate 51 moves upward, the driving plate 51 drives the lower end of the hinged rod 52 to move upward, thereby rotating the hinged rod 52, and the two hinged rods 52 move away from each other at one end close to the fixed plate 4, so that the hinged rod 52 pushes the corresponding fixed plate 4 to move into the matching groove 12, and the upper and lower surfaces of the fixed plate 4 are in contact with the groove wall corresponding to the matching groove 12. At the same time, the fixed plate 4 stretches the limit spring 54. When the lock buckle 56 can cooperate with the fixing ring 57, the fixing plate 4 is plugged into place at this time, and the lock buckle 56 is buckled on the fixing ring 57, so that the power plate 53, the driving plate 51, the fixing plate 4 and the limit rod 6 can be limited, and the installation of the drone body 1, the mounting block 3 and the launcher 2 is completed.

[0037] When the launcher 2 needs to be removed, it is only necessary to release the lock buckle 56 from the fixing ring 57. At this time, the reset spring 58 recovers its deformation and pushes the power plate 53 to move. At the same time, the limit spring 54 also recovers its deformation and pulls the corresponding fixing plate 4 to move into the cavity 31. The movement of the fixing plate 4 drives the hinged rod 52 to rotate to the initial position, and the hinged rod 52 pushes the driving plate 51 and the limit rod 6 to move downward; when the reset spring 58 returns to the initial state, the limit spring 54 also returns to the initial state. At this time, the fixing plate 4 and the limit rod 6 are both restored to the initial position, the drone body 1 is released from the mounting block 3, and the operator can remove the mounting block 3 and the launcher 2; the steps for the operator to replace the launcher 2 are reduced, and the efficiency of replacing the launcher 2 is improved.

[0038] Reference Figure 4 The connecting column 21 is rotatably connected to the mounting block 3, and a coaxial support rod 22 is fixedly connected to the upper end of the connecting column 21. The support rod 22 passes through the mounting block 3 and extends into the cavity 31. A coaxial transmission wheel 23 is fixedly connected to the upper end of the support rod 22. The transmission wheel 23 is a gear. An annular connecting groove 34 coaxial with the support rod 22 is provided on the bottom wall of the cavity 31. At least two connecting blocks 24 adapted to the connecting grooves 34 are fixedly connected to the lower end surface of the transmission wheel 23. The connecting blocks 24 are slidably inserted in the connecting grooves 34. The connecting blocks 24 cooperate with the connecting grooves 34 to enable the transmission wheel 23 to rotate with the mounting block 3.

[0039] Reference Figure 2 and Figure 4In order to enable the operator to conveniently adjust the inclination angle of the launcher 2 according to actual conditions, a rotating assembly 7 for controlling the rotation of the connecting column 21 and the launcher 2 is provided in the mounting block 3. The rotating assembly 7 includes a driving wheel 71 rotatably connected to the bottom cavity wall of the cavity 31, the driving wheel 71 is meshed with the transmission wheel 23, and the diameter of the driving wheel 71 is larger than the diameter of the transmission wheel 23, and the transmission wheel 23 is located on one side of the power plate 53; a rack 72 meshed with the driving wheel 71 is fixedly connected to the higher side of the power plate 53, the length direction of the rack 72 is arranged along the length direction of the sliding block 531, and the upper surface of the rack 72 is flush with the upper surface of the power plate 53.

[0040] There are multiple fixing rings 57, and multiple fixing rings 57 are arranged along the sliding direction of the power plate 53. By setting the position of the fixing ring 57, when the lock buckle 56 cooperates with different fixing rings 57, the connecting column 21 and the launcher 2 correspond to different angles; in the process of the operator pulling the power plate 53, when the lock buckle 56 cooperates with the fixing ring 57 at the edge, as the operator continues to pull the power plate 53 to move, the driving plate 51 contacts the upper surface of the rack 72, and the rack 72 cooperates with the driving wheel 71, so that the driving wheel 71 drives the transmission wheel 23, the support rod 22, the connecting column 21 and the launcher 2 to rotate, and when the launcher 2 rotates to a suitable angle, the lock buckle 56 is fixed to the corresponding fixing ring 57.

[0041] The implementation principle of a forest fire extinguishing device based on a drone in an embodiment of the present application is as follows: align the limit rod 6 with the limit groove 13, and insert the mounting block 3 into the receiving groove 11, then pull the protruding rod 59, pull the lock buckle 56, and when it is observed that the lock buckle 56 can be aligned with the outermost fixing ring 57, the fixing plate 4 has been inserted into the matching groove 12, and the limit rod 6 has also been inserted into the limit groove 13. At this time, observe the rotation angle of the transmitter 2. When the transmitter 2 is rotated to a suitable angle, buckle the lock buckle 56 on the corresponding fixing ring 57; when the transmitter 2 needs to be removed, remove the lock buckle 56 from the fixing ring 57, and at the same time, the reset spring 58 and the limit spring 54 both restore their deformation, and then pull the mounting block 3 downward until the mounting block 3 is out of the receiving groove 11.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A forest fire extinguishing device based on a drone, comprising a drone body (1), a transmitter (2) being provided at the bottom of the drone body (1), characterized in that: A connecting column (21) is connected to the upper part of the transmitter (2) body, a mounting block (3) is connected to the upper end of the connecting column (21), and a receiving groove (11) adapted to the mounting block (3) is provided at the bottom of the drone body (1); The mounting block (3) is provided with a cavity (31), the top wall of the cavity (31) is provided with at least one fixing plate (4), the mounting block (3) is provided with a through hole for the fixing plate (4) to pass through, the drone body (1) is provided with a matching groove (12) corresponding to the fixing plate (4), and the matching groove (12) is connected to the receiving groove (11); A vertical limiting rod (6) is provided in the cavity (31), the limiting rod (6) passes through the top surface of the mounting block (3) and is slidably plugged with the mounting block (3), and a matching groove (12) adapted to the limiting rod (6) is provided in the drone body (1), and the matching groove (12) is communicated with the receiving groove (11); A driving assembly (5) is also provided in the cavity (31). When the driving assembly (5) is in operation, it can simultaneously drive the limiting rod (6) to be inserted into the limiting groove (13) and the fixing plate (4) to be inserted into the matching groove (12).

2. A forest fire extinguishing device based on a drone according to claim 1, characterized in that: The driving assembly (5) comprises a driving plate (51) fixedly connected to the lower end of the limiting rod (6); the driving plate (51) is located at a position of the fixing plate (4) close to the middle of the cavity (31); a hinged rod (52) is hingedly connected to the fixing plate (4) and arranged along the sliding direction of the fixing plate (4) in the length direction; the hinged rod (52) is hingedly connected to the driving plate (51); a limiting spring (54) is connected to one side of the fixing plate (4); and the limiting spring (54) is fixed to the top wall of the cavity (31); The cavity (31) is also slidably connected to a power plate (53) located below the drive plate (51); the upper surface of the power plate (53) is inclined upward in a direction away from the power plate (53); a return spring (58) is connected to one side of the power plate (53); the return spring (58) is connected to the cavity wall of the cavity (31); a pull rope (55) is connected to the lower side of the power plate (53); one end of the pull rope (55) passes through the mounting block (3) and extends outside the mounting block (3); the end of the pull rope (55) located outside the mounting block (3) is connected to a lock buckle (56); and a fixing ring (57) is connected to the lower surface of the mounting block (3).

3. A forest fire extinguishing device based on a drone according to claim 1 or 2, characterized in that: The upper surface of the fixed plate (4) is connected to a sliding block (41); the top wall of the cavity (31) is provided with a sliding groove (32) adapted to the sliding block (41); the length direction of the sliding groove (32) is arranged along the sliding direction of the fixed plate (4); and the sliding block (41) is slidably inserted into the sliding groove (32).

4. A forest fire extinguishing device based on a drone according to claim 2, characterized in that: The lower surface of the power plate (53) is connected to a sliding block (531), and a sliding groove (33) adapted to the sliding block (531) is provided on the bottom wall of the cavity (31). The length direction of the sliding groove (33) is arranged along the inclined direction of the upper surface of the power plate (53), and the sliding block (531) is slidably inserted in the corresponding sliding groove (33).

5. The forest fire extinguishing device based on a drone according to claim 2, characterized in that: The connecting column (21) is rotatably connected to the mounting block (3), and a rotating assembly (7) for controlling the rotation angle of the connecting column (21) is also provided in the cavity (31).

6. A forest fire extinguishing device based on a drone according to claim 5, characterized in that: A transmission wheel (23) is provided in the cavity (31), and the lower end surface of the transmission wheel (23) is connected to at least two connection blocks (24), and the distance between the axis of the transmission wheel (23) and the two connection blocks (24) is consistent. An annular connection groove (34) is provided on the bottom wall of the cavity (31), and the connection block (24) is slidably inserted in the connection groove (34). The lower end surface of the transmission wheel (23) is connected to a support rod (22) that penetrates the mounting block (3) and is connected to the connection column (21), and the support rod (22), the connection groove (34), the transmission wheel (23) and the connection column (21) are coaxial.

7. A forest fire extinguishing device based on a drone according to claim 6, characterized in that: The number of the fixing rings (57) is plural, and the fixing rings (57) are arranged along the sliding direction of the power plate (53). The transmission wheel (23) is a gear. The rotating assembly (7) comprises a driving wheel (71) rotatably connected to the bottom wall of the cavity (31). The driving wheel (71) meshes with the transmission wheel (23), and the diameter of the driving wheel (71) is larger than the diameter of the transmission wheel (23). A rack (72) meshing with the driving wheel (71) is connected to a side of the power plate (53) away from the pull rope (55). The length direction of the rack (72) is arranged along the sliding direction of the power plate (53), and the upper surface of the rack (72) is flush with the highest point of the power plate (53).

8. The forest fire extinguishing device based on a drone according to claim 2, characterized in that: A protruding rod (59) is connected to the lower side of the power plate (53), and one end of the protruding rod (59) penetrates the mounting block (3) and extends out of the mounting block (3).

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