Flood prevention rescue scene image file automatic collection unmanned plane

Abstract

This utility model discloses an unmanned aerial vehicle (UAV) for automatically acquiring on-site images of flood control and disaster relief, belonging to the field of UAV technology. The utility model includes a main body of the UAV with a camera at its bottom for acquiring image archives; a rainproof component installed at the bottom of the main body and above the camera; the rainproof component includes a blowing component and a jet component. The blowing component blows air in the direction the camera is shooting, forming a wind wall on the camera to blow away raindrops and dust approaching the camera lens surface; the jet component is connected to the blowing component and simultaneously sprays air onto the camera lens surface during the operation of the blowing component to blow away water droplets and dust from the camera lens. This utility model enables the entire UAV to acquire flood scene images reliably and stably even during rain.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to an UAV for automatically collecting on-site images and archives of flood control and disaster relief. Background Technology

[0002] With the arrival of the flood season and increased rainfall, many places will experience heavy rainfall. Such extreme weather can easily lead to flooding. In order to quickly understand the flood situation, drones are usually used to take on-site images and archives.

[0003] However, during filming, flood control and disaster relief sites are usually accompanied by heavy rainfall or continuous downpours, with raindrops that are larger and more concentrated than in ordinary rainy weather. Furthermore, strong winds often accompany these sites, causing raindrops to hit the lens at an angle, increasing the probability of water droplets adhering to the lens. To capture details (such as cracks in dams or the location of personnel), drones often need to be close to the water surface or ground, making the lens more susceptible to contact with raindrops or splashes. Thus, during conventional drone flight filming, water droplets and stains from rain, floodwaters, and disaster relief equipment can easily drip onto the drone's lens, quickly forming a water film or leaving water droplets. This affects the drone's image capture and, in severe cases, even interferes with the operator's remote control of the drone.

[0004] Chinese utility model patent CN222330022U discloses a drone with a rainproof and dustproof structure. The drone has a camera fixedly mounted on its surface, a collection component on its top, and a movable component on its surface, including a threaded rod. The threaded rod is fixedly mounted on the bottom of a rotating shaft, and a fixing block is fixedly mounted on the surface of the drone. This rainproof and dustproof structure works by rotating the threaded rod, causing a sliding plate to slide downwards on its surface. This downward sliding of the sliding plate causes a contact rod to slide downwards, which in turn contacts a connecting plate, causing it to move downwards. This downward movement of the connecting plate then causes a cleaning plate to slide on the camera surface, cleaning dust and rainwater from the camera surface, thus improving the drone's shooting quality and enhancing the shooting effect. However, strong winds are common at flood control sites, and the cleaning plate (especially scraper-type plates) can easily become unstable due to wind swaying and fail to accurately adhere to the lens. Furthermore, when mud, oil, or chemical residues from floodwaters adhere to the lens at flood control and disaster relief sites, ordinary cleaning plates are difficult to remove them completely, and repeated wiping can easily scratch the lens; the periodic cleaning of the cleaning plate can only temporarily remove water droplet stains and cannot prevent them from continuing to adhere, forming a "clean-recontamination" cycle.

[0005] Chinese utility model patent CN213473547U discloses a rain and dust protection device for an inspection drone, including a drone body and a rain and dust protection mechanism. The drone body has mounting brackets on both the front and rear sides of its bottom, with a rotating frame between the brackets. The rotating frame is rotatably connected to the bottom of the drone body. The rain and dust protection mechanism is fixed to a camera, and the camera is rotatably connected to the inside of the rotating frame. In this rain and dust protection device for the inspection drone, the rotating frame can rotate under the action of a first motor, thereby rotating the camera. Simultaneously, the camera itself can rotate under the action of a second motor, facilitating adjustment of the camera's direction and angle. A transparent cover is placed outside the camera to provide dust and rain protection. When the transparent cover becomes contaminated with dust or rainwater, an air pump, driven by a third motor, rotates and aligns with the outer surface of the transparent cover to promptly blow away the dust or rainwater, achieving an automatic cleaning effect. However, transparent covers are still a passive protection method. At flood control and disaster relief sites, transparent covers are prone to rapid formation of water films / droplets in heavy rain. Even with hydrophobic coatings or air pumps to remove the water, there are still technical problems that cause light refraction and scattering, especially at night or in low-light environments, resulting in a more blurred image and reduced contrast. For example, the light transmittance of a 0.5 mm thick PC cover can decrease by 30% to 50% in heavy rain. In addition, the cover and lens form a double-layer optical interface, which can produce ghosting and glare in strong light environments (such as searchlights and lightning) at disaster relief sites, interfering with the identification of key details.

[0006] In summary, this invention provides an unmanned aerial vehicle (UAV) for automatically collecting on-site images of flood control and disaster relief, which overcomes the shortcomings of existing technologies and enables reliable and stable acquisition of on-site images of flood conditions in rainy environments, thus playing an important role in flood control and disaster relief. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, this utility model provides an unmanned aerial vehicle (UAV) for automatically collecting on-site images and archives of flood control and disaster relief, comprising:

[0008] The main body of the drone has a camera at its bottom for capturing image files;

[0009] A rainproof component is installed at the bottom of the main body and above the camera;

[0010] The rainproof component includes a blower component and a jet component. The blower component blows air in front of the camera along the direction in which the camera is shooting, forming a wind wall on the camera. The wind wall is used to blow away raindrops and dust that are close to the surface of the camera lens. The jet component is connected to the blower component and sprays air onto the surface of the camera lens simultaneously when the blower component is running, so as to blow away water droplets and dust on the camera lens.

[0011] Preferably, the blowing assembly includes a housing, a fan wheel, and a motor. The housing is fixedly installed at the bottom of the main body, and the fan wheel is rotatably installed inside the housing. An air inlet and an air outlet are provided on the lower surface of the housing. When the fan wheel rotates, air is drawn in from the air inlet and blown out from the air outlet, forming a wind wall with the air blown out from the air outlet.

[0012] More preferably, the motor is fixedly mounted on the side of the housing, and the output end of the motor is connected to the wind turbine shaft, so that the motor drives the wind turbine to rotate.

[0013] More preferably, the air outlet is located above the camera, and the airflow direction of the air outlet is towards the camera's shooting direction.

[0014] Preferably, the jet assembly includes a distribution chamber, a jet nozzle, and a pressure assembly, with a partition fixed inside the housing, and the distribution chamber formed between the partition and the inner wall of the housing.

[0015] More preferably, the jet nozzle is located on the lower surface of the housing and is connected to the distribution chamber. At the same time, the jet nozzle is directed toward the camera lens and jets air onto the surface of the camera lens to blow away raindrops and dust from the surface of the camera lens.

[0016] In a further preferred embodiment, the pressure component is disposed inside the housing, and is driven to operate by the rotation of the impeller, thereby continuously injecting compressed air into the distribution chamber.

[0017] More preferably, the pressure assembly includes a cylinder liner, a piston, a double-ended lead screw, and a threaded seat; the cylinder liner is fixedly installed inside the housing, and the piston is slidably installed inside the cylinder liner in a sealed manner. When the piston slides towards the inner end of the cylinder liner, it compresses the air inside the cylinder liner; the double-ended lead screw is rotatably installed inside the housing, and the threaded seat is threaded onto the double-ended lead screw. The rotation of the double-ended lead screw drives the threaded seat to reciprocate along the axis of the double-ended lead screw. The threaded seat is connected to the piston, and the movement of the threaded seat drives the piston to move synchronously; an air inlet is provided on the surface of the piston, and a one-way valve is provided in the middle of the air inlet. Under the action of the one-way valve, when the piston slides, external air can only enter the cylinder liner from the air inlet. A connecting pipe is connected between the cylinder liner and the distribution chamber, and the air inside the cylinder liner enters the distribution chamber through the connecting pipe. A control component is provided in the middle of the connecting pipe, and the control component controls the opening and closing of the connecting pipe. When the threaded seat drives the piston to move and brings the piston close to the inner end of the cylinder liner, it can trigger the operation of the control component to open the connecting pipe. A transmission assembly is connected between the double-ended lead screw and the impeller, and the impeller drives the double-ended lead screw to rotate through the transmission assembly.

[0018] Furthermore, the control component includes a push switch and a trigger rod. The push switch is installed in the middle of the connecting pipe and closes it. When the button on the push switch is pressed, the push switch opens the connecting pipe. The trigger rod is fixedly installed on the button of the push switch. A trigger block is fixedly installed on the side of the threaded seat. When the threaded seat drives the piston to approach the inner end of the cylinder liner, the threaded seat synchronously drives the trigger block to move and pushes the trigger rod to press the button of the push switch.

[0019] Furthermore, the transmission assembly includes pulleys and a timing belt. There are two pulleys, which are fixedly installed on the shafts of the double-ended lead screw and the wind turbine, respectively. The two pulleys rotate with the double-ended lead screw and the wind turbine, respectively. The timing belt is sleeved on the two pulleys, and the two pulleys rotate synchronously through the timing belt.

[0020] Based on the above technical solutions, this utility model incorporates a rainproof component. The blowing component within the rainproof component forms a wind wall in front of the drone's camera, blowing away raindrops and dust near the camera lens surface. This eliminates the need for a transparent cover and its fixing structure, reducing the drone's weight and complexity, and improving its endurance and maneuverability. Furthermore, the blowing component simultaneously drives the jetting component within the rainproof component to spray air onto the camera lens surface, removing raindrops and dust. This design achieves high integration of the blowing and jetting components, simultaneously performing blowing and jetting to provide continuous active defense. This allows the drone to acquire good and stable images of flood scenes during rain, effectively ensuring the quality of automatically acquired image archives.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0022] This utility model provides an unmanned aerial vehicle (UAV) for automatically acquiring on-site images of flood control and disaster relief. It has advantages such as high integration and good protection against rainwater stains, ensuring the image quality of automatically acquired images and achieving good and stable acquisition of on-site images of flood conditions. Attached Figure Description

[0023] Figure 1 This is a first-view schematic diagram of the three-dimensional structure of this utility model;

[0024] Figure 2 This is a second-view schematic diagram of the three-dimensional structure of this utility model;

[0025] Figure 3 This is a first-view schematic diagram of the internal structure of the shell of this utility model;

[0026] Figure 4 This is a second-view schematic diagram of the internal structure of the shell of this utility model.

[0027] The attached diagram is labeled as follows: 1. Main body; 2. Camera; 3. Housing; 4. Wind turbine; 5. Motor; 6. Air inlet; 7. Air outlet; 8. Distribution chamber; 9. Jet nozzle; 10. Partition plate; 11. Cylinder liner; 12. Piston; 13. Double-ended lead screw; 14. Threaded seat; 15. Air inlet; 16. Connecting pipe; 17. Push switch; 18. Trigger rod; 19. Trigger block; 20. Pulley; 21. Synchronous belt. Detailed Implementation

[0028] The present invention is further illustrated below by way of embodiments, but these embodiments do not limit the present invention to the scope of the embodiments described. Experimental methods in the following embodiments that do not specify specific conditions are performed according to conventional methods and conditions, or as selected according to the product instructions.

[0029] Reference Figure 1 and Figure 2 This utility model provides an automatic image archive acquisition drone for flood control and disaster relief sites, including a main body 1 and a rainproof component. A camera 2 capable of acquiring image archives is installed at the bottom of the main body 1. The rainproof component is installed at the bottom of the main body 1 and above the camera 2. The rainproof component includes a blowing component and a jet component. The blowing component can blow air in front of the camera 2 along the shooting direction of the camera 2 and can form a wind wall on the camera 2. The wind wall can blow away raindrops and dust close to the lens surface of the camera 2. The jet component is connected to the blowing component and can spray air onto the lens surface of the camera 2 simultaneously when the blowing component is running. When the jet component sprays air onto the lens of the camera 2, it can blow away water droplets and dust on the lens of the camera 2.

[0030] When in use, simply activate the rainproof component. The blower component within the rainproof component will form a wind wall in front of camera 2 to blow away raindrops and dust near the camera lens. Simultaneously, the operation of the blower component will also drive the jet component to spray air onto the surface of camera lens 2, blowing away raindrops and dust adhering to the surface of camera lens 2, thus cleaning camera lens 2. In this way, the entire drone can still capture images of the flood scene even when it is raining, making its functions more complete.

[0031] like Figure 2 As shown, the blowing assembly includes a housing 3, a fan wheel 4, and a motor 5. The housing 3 is fixedly installed at the bottom of the main body 1. The fan wheel 4 is rotatably installed inside the housing 3. The lower surface of the housing 3 has an air inlet 6 and an air outlet 7. When the fan wheel 4 rotates, it can draw in air from the air inlet 6 and blow it out from the air outlet 7. At the same time, the air blown out from the air outlet 7 forms the wind wall. The motor 5 is fixedly installed on the side of the housing 3. The motor 5 is powered by a battery inside the drone. The output end of the motor 5 is connected to the shaft of the fan wheel 4, which enables the motor 5 to drive the fan wheel 4 to rotate.

[0032] In this way, simply start motor 5, which will drive the fan wheel 4 to rotate. The rotation of the fan wheel 4 will draw in air from the air inlet 6 and blow it out from the air outlet 7. This will form a wind wall from top to bottom in front of camera 2. In this way, when raindrops or dust approach the surface of camera 2 lens, they will be blown away by the wind wall, thus ensuring that the surface of camera 2 is clean and ensuring the normal acquisition of flood situation images.

[0033] The air outlet 7 is located above the camera 2, and the air outlet 7 blows air in the direction that the camera 2 is shooting. This ensures that the air blown out by the air outlet 7 can form a wind wall in front of the camera 2 that can blow away raindrops and dust.

[0034] Figure 2 , Figure 3 and Figure 4 As shown, the jet assembly includes a distribution chamber 8, a jet nozzle 9, and a pressure assembly. A partition 10 is fixed inside the housing 3. The distribution chamber 8 is formed between the partition 10 and the inner wall of the housing 3. The jet nozzle 9 is opened on the lower surface of the housing 3 and communicates with the distribution chamber 8. At the same time, the jet nozzle 9 is directed towards the lens of the camera 2 and can spray air onto the surface of the lens of the camera 2 to blow away raindrops and dust. The pressure assembly is installed inside the housing 3, and the rotation of the impeller 4 can drive the pressure assembly to operate. At the same time, the operation of the pressure assembly can continuously inject compressed air into the distribution chamber 8.

[0035] In this way, the rotation of the impeller 4 can drive the pressure component to operate, and the pressure component will inject compressed air into the distribution chamber 8. The compressed air will finally be ejected from the jet nozzle 9 and blown onto the surface of the camera lens 2 to clean it, thus achieving the cleaning effect on the surface of the camera lens 2.

[0036] continue Figure 2 , Figure 3 and Figure 4As shown, the pressure assembly includes a cylinder liner 11, a piston 12, a double-ended lead screw 13, and a threaded seat 14. The cylinder liner 11 is fixedly installed inside the housing 3. The piston 12 is slidably installed inside the cylinder liner 11 in a sealed manner. When the piston 12 slides towards the inner end of the cylinder liner 11, it can compress the air inside the cylinder liner 11. The double-ended lead screw 13 is rotatably installed inside the housing 3. The threaded seat 14 is threaded onto the double-ended lead screw 13. The rotation of the double-ended lead screw 13 can drive the threaded seat 14 to reciprocate along the axis of the double-ended lead screw 13. The threaded seat 14 is connected to the piston 12, and the movement of the threaded seat 14 can drive the piston 12 to move synchronously. An air inlet 15 is provided on the surface of the piston 12. A one-way valve is provided in the middle of the air inlet 15. Under the action of the one-way valve, when the piston 12 slides, external air can only enter the cylinder liner 11 through the air inlet 15. The cylinder liner 11 is connected to the distribution chamber 8 by a connecting pipe 16. The air inside the cylinder liner 11 can enter the distribution chamber 8 through the connecting pipe 16. A control component is provided in the middle of the connecting pipe 16. The control component can control the opening and closing of the connecting pipe 16. When the threaded seat 14 drives the piston 12 to move and brings the piston 12 close to the inner end of the cylinder liner 11, it can trigger the operation of the control component to open the connecting pipe 16. A transmission assembly is connected between the double-ended screw 13 and the impeller 4. The impeller 4 can drive the double-ended screw 13 to rotate through the transmission assembly.

[0037] Thus, the rotation of the impeller 4 will drive the double-ended lead screw 13 to rotate through the transmission assembly. The double-ended lead screw 13 will drive the threaded seat 14 to slide back and forth along its axis. During this process, the threaded seat 14 will synchronously drive the piston 12 to slide. When the piston 12 slides away from the inner end of the cylinder liner 11, the air inside the housing 3 will be drawn into the cylinder liner 11 through the air inlet 15. Then, when the piston 12 moves towards the inner end of the cylinder liner 11, it will compress the air inside the cylinder liner 11. When the piston 12 approaches the inner end of the cylinder liner 11, the threaded seat 14 will drive the control component to open the connecting pipe 16. At this time, the compressed air inside the cylinder liner 11 will enter the distribution chamber 8 and then be ejected from the jet nozzle 9 to blow air onto the lens surface of the camera 2.

[0038] Figure 2 , Figure 3 and Figure 4 As shown, the control components include a push switch 17 and a trigger rod 18. The push switch 17 is installed in the middle of the connecting pipe 16 and closes it. When the button on the push switch 17 is pressed, the push switch 17 can conduct the connecting pipe 16. The trigger rod 18 is fixedly installed on the button of the push switch 17. A trigger block 19 is fixedly installed on the side of the threaded seat 14. When the threaded seat 14 drives the piston 12 to approach the inner end of the cylinder liner 11, the threaded seat 14 will synchronously drive the trigger block 19 to move and push the trigger rod 18 to press the button of the push switch 17.

[0039] Thus, when the piston 12 approaches the inner end of the cylinder liner 11, the threaded seat 14 will drive the trigger block 19 to push the trigger rod 18 to move, and the trigger rod 18 will press the button of the push switch 17 to open the connecting pipe 16.

[0040] like Figure 3 and Figure 4 As shown, the transmission assembly includes pulleys 20 and a synchronous belt 21. There are two pulleys 20, which are respectively fixedly mounted on the shafts of the double-ended lead screw 13 and the impeller 4. The two pulleys 20 can rotate with the double-ended lead screw 13 and the impeller 4, respectively. The synchronous belt 21 is sleeved on the two pulleys 20, and the two pulleys 20 can rotate synchronously through the synchronous belt 21. In this way, the rotation of the impeller 4 will drive the double-ended lead screw 13 to rotate through the pulleys 20 and the synchronous belt 21.

[0041] Therefore, the complete usage process is as follows: when a drone is needed to capture images of the flood situation but it is still raining and raindrops are falling on the surface of camera 2, causing the image captured by camera 2 to be unclear, motor 5 can be started. Motor 5 will drive the wind wheel 4 to rotate. The rotation of wind wheel 4 will draw in air from the air inlet 6 and blow it out from the air outlet 7. This will form a wind wall from top to bottom in front of camera 2. In this way, when raindrops or dust approach the surface of camera 2 lens, they will be blown away by the wind wall, thereby ensuring that the surface of camera 2 is clean and ensuring the normal acquisition of flood situation images.

[0042] Furthermore, during the rotation of the wind turbine 4, the double-ended lead screw 13 will also be driven to rotate through the pulley 20 and the synchronous belt 21. The double-ended lead screw 13 will drive the threaded seat 14 to slide back and forth along its axis. During this process, the threaded seat 14 will synchronously drive the piston 12 to slide. When the piston 12 slides away from the inner end of the cylinder liner 11, the air inside the housing 3 will be drawn into the cylinder liner 11 through the air inlet 15. Then, when the piston 12 moves towards the inner end of the cylinder liner 11, it will compress the air inside the cylinder liner 11. When the piston 12 approaches the inner end of the cylinder liner 11, the threaded seat 14 will drive the trigger block 19 to push the trigger rod 18 to move, and the trigger rod 18 will press the button of the push switch 17 to open the connecting pipe 16. At this time, the compressed air inside the cylinder liner 11 will enter the distribution chamber 8 and then be ejected from the jet nozzle 9 to blow air onto the lens surface of the camera 2, thereby cleaning the lens of the camera 2. This further ensures that the lens of the camera 2 is clean and guarantees the normal acquisition of flood images.

[0043] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A drone for automatically collecting on-site images and archives of flood control and disaster relief, characterized in that, include: The main body of the drone (1) has a camera (2) at its bottom for collecting image files. A rainproof component is installed at the bottom of the main body (1) and above the camera (2); The rainproof component includes a blowing component and a jet component. The blowing component blows air in front of the camera (2) along the shooting direction of the camera (2) and forms a wind wall on the camera (2). The wind wall is used to blow away raindrops and dust that are close to the lens surface of the camera (2). The jet component is connected to the blowing component and sprays air onto the lens surface of the camera (2) simultaneously when the blowing component is running, so as to blow away water droplets and dust on the lens of the camera (2).

2. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 1, characterized in that: The blowing assembly includes a housing (3), a fan wheel (4), and a motor (5). The housing (3) is fixedly installed at the bottom of the main body (1), and the fan wheel (4) is rotatably installed inside the housing (3). The lower surface of the housing (3) is provided with an air inlet (6) and an air outlet (7). When the fan wheel (4) rotates, it draws in air from the air inlet (6) and blows the air out from the air outlet (7), forming a wind wall with the air blown out from the air outlet (7).

3. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 2, characterized in that: The motor (5) is fixedly installed on the side of the housing (3). The output end of the motor (5) is connected to the shaft of the wind turbine (4), so that the motor (5) drives the wind turbine (4) to rotate.

4. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 2, characterized in that: The air outlet (7) is located above the camera (2), and the air outlet (7) blows air in the direction of the camera (2) shooting.

5. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 1, characterized in that: The jet assembly includes a distribution chamber (8), a jet nozzle (9), and a pressure assembly. A partition (10) is fixed inside the housing (3), and the distribution chamber (8) is formed between the partition (10) and the inner wall of the housing (3).

6. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 5, characterized in that: The air nozzle (9) is located on the lower surface of the housing (3) and is connected to the distribution cavity (8). At the same time, the air nozzle (9) is directed toward the lens of the camera (2) and sprays air onto the surface of the lens of the camera (2) to blow away raindrops and dust from the surface of the lens of the camera (2).

7. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 5, characterized in that: The pressure component is located inside the housing (3). The pressure component is driven to operate by the rotation of the impeller (4), and compressed air is continuously injected into the distribution chamber (8) by the operation of the pressure component.

8. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 5, characterized in that: The pressure assembly includes a cylinder liner (11), a piston (12), a double-ended lead screw (13), and a threaded seat (14). The cylinder liner (11) is fixedly installed inside the housing (3), and the piston (12) is slidably installed inside the cylinder liner (11). When the piston (12) slides towards the inner end of the cylinder liner (11), it compresses the air inside the cylinder liner (11). The double-ended lead screw (13) is rotatably installed inside the housing (3), and the threaded seat (14) is threaded onto the double-ended lead screw (13). The rotation of the double-ended lead screw (13) drives the threaded seat (14) to reciprocate along the axis of the double-ended lead screw (13). The threaded seat (14) is connected to the piston (12), and the movement of the threaded seat (14) drives the piston (12) to move synchronously. An air inlet (15) is provided on the surface of the piston (12). The intake port (15) is equipped with a one-way valve. Under the action of the one-way valve, when the piston (12) slides, the external air can only enter the cylinder liner (11) through the intake port (15). The cylinder liner (11) is connected to the distribution chamber (8) by a connecting pipe (16). The air inside the cylinder liner (11) enters the distribution chamber (8) through the connecting pipe (16). The connecting pipe (16) is equipped with a control component in the middle. The control component controls the opening and closing of the connecting pipe (16). When the threaded seat (14) drives the piston (12) to move and makes the piston (12) close to the inner end of the cylinder liner (11), the control component can be triggered to open the connecting pipe (16). The double-ended screw (13) is connected to the impeller (4) by a transmission component. The impeller (4) drives the double-ended screw (13) to rotate through the transmission component.

9. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 8, characterized in that: The control components include a push switch (17) and a trigger rod (18). The push switch (17) is installed in the middle of the connecting pipe (16) and closes it. When the button on the push switch (17) is pressed, the push switch (17) opens the connecting pipe (16). The trigger rod (18) is fixedly installed on the button of the push switch (17). A trigger block (19) is fixedly installed on the side of the threaded seat (14). When the threaded seat (14) drives the piston (12) to approach the inner end of the cylinder liner (11), the threaded seat (14) synchronously drives the trigger block (19) to move and pushes the trigger rod (18) to press the button of the push switch (17).

10. The unmanned aerial vehicle for automatically acquiring on-site image archives for flood control and disaster relief as described in claim 8, characterized in that: The transmission assembly includes pulleys (20) and a timing belt (21). There are two pulleys (20), which are fixedly installed on the shafts of the double-ended screw (13) and the impeller (4), respectively. The two pulleys (20) rotate with the double-ended screw (13) and the impeller (4), respectively. The timing belt (21) is sleeved on the two pulleys (20), and the two pulleys (20) rotate synchronously through the timing belt (21).

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