Unmanned aerial vehicle for cleaning outer wall of high-altitude building

Abstract

The invention relates to the technical field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle for cleaning an outer wall of a high-altitude building, and the unmanned aerial vehicle comprises an unmanned aerial vehicle for cleaning the outer wall; the spraying pipe is arranged on the unmanned aerial vehicle and used for spraying cleaning liquid; the liquid supply pipe is arranged at one end of the spray pipe and used for providing cleaning liquid into the spray pipe; and the connecting assembly is used for connecting the spray pipe with the liquid supply pipe. According to the unmanned aerial vehicle, after the liquid supply pipe is hung by branches, the liquid supply pipe can be separated from the spray pipe, so that the unmanned aerial vehicle can be prevented from being pulled by the liquid supply pipe to be unbalanced and fall off, the unmanned aerial vehicle is protected, automatic connection of the liquid supply pipe and the spray pipe can be achieved after the branches are separated from the liquid supply pipe, continuous work is kept, and the working efficiency is improved. After the liquid supply pipe is pulled to be separated from the spray pipe, cleaning liquid injected into the liquid supply pipe can be recycled, and waste is avoided.

Description

Technical Field

[0001] This invention belongs to the field of unmanned aerial vehicle technology, and specifically relates to an unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings. Background Technology

[0002] Unmanned aerial vehicles (UAVs), as the core carrier of the low-altitude economy, are aircraft managed by control stations (including remote control or autonomous flight).

[0003] When existing drones are used for cleaning the exterior walls of high-rise buildings, they are equipped with nozzles that are connected to a liquid supply pipe on the ground. An external pump injects cleaning fluid into the supply pipe and nozzle, and then the cleaning fluid is sprayed out through the nozzle. This process, combined with the drone's flight, cleans the exterior walls. However, during this process, if the supply pipe gets caught on a thick tree branch near the building, the drone will be pulled and lose balance while continuing to fly, resulting in a fall and damage.

[0004] Therefore, it is necessary to invent an unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings, comprising: Drones are used for exterior wall cleaning. A nozzle, mounted on the drone, is used to spray cleaning fluid; A liquid supply pipe is located at one end of the nozzle and is used to supply cleaning fluid into the nozzle. A connection component is used to connect the nozzle to the liquid supply pipe, and to separate the nozzle from the liquid supply pipe when the liquid supply pipe is caught, thereby triggering the drone to hover.

[0007] Furthermore, the connection component includes: The first connecting ring is sleeved on one end of the nozzle; The second connecting ring is located below the first connecting ring; A rigid tube, one end of which is connected to the second connecting ring, and the other end of which is connected to the liquid supply tube; The housing is equidistantly arranged around the outside of the first connecting ring; A retaining ring is attached to the top of the second connecting ring. The outer side of the retaining ring has a groove, and the bottom of the first connecting ring has a groove that matches the retaining ring. A locking rod is slidably disposed inside the housing, with one end of the locking rod extending into the annular groove; A pressure plate is fitted over the outside of the clamp rod; A spring is fitted onto the outside of the lever; A suspension assembly is disposed inside the first connecting ring and is used to suspend the retaining ring and the second connecting ring when the first connecting ring and the second connecting ring are separated; A hovering control component, mounted on the housing, is used to control the drone to hover.

[0008] Furthermore, the suspension assembly includes: The motors are symmetrically mounted inside the first connecting ring; A take-up reel is connected to the output shaft of the motor; A pull rope, one end of which is connected to the take-up reel, and the other end of which is connected to the retaining ring, is wound onto the take-up reel; A switch is connected to one of the housings via a mounting bracket, and the position of the switch corresponds to the position of the lever. A controller, mounted on the drone, is used to control the drone to hover and to control the rotation speed of the motor output shaft.

[0009] Furthermore, when the motor is not in operation, its output shaft can rotate under the action of external force.

[0010] Furthermore, the rigid tube has a sealing plate inside, which is rotatably disposed inside the rigid tube. The rigid tube has a reset assembly outside, which can reset the sealing plate. The rigid tube has a stop block inside, and the nozzle has a push rod inside, which corresponds to the position of the sealing plate. The rigid tube is equipped with a recovery assembly that can recover the cleaning fluid.

[0011] Furthermore, the recycling component includes: An installation tube is connected to the outside of the rigid pipe, and the installation tube communicates with the rigid pipe; The pressure relief valve is located inside the mounting pipe; A return pipe, one end of which is connected to the mounting pipe; Use a strap to bind the return pipe to the supply pipe.

[0012] Furthermore, the reset component includes: A rotating shaft is fixedly installed in the middle of the closed plate. The inner side of the rigid tube is provided with a circular groove that matches the rotating shaft. The end of the rotating shaft is rotatably installed in the circular groove. A torsion spring is sleeved on the outside of the rotating shaft, and the two ends of the torsion spring are fixedly connected to the inner wall of the circular groove and the rotating shaft, respectively.

[0013] Furthermore, the sealing plate consists of a circular plate and a sealing ring fitted around the circular plate.

[0014] Furthermore, the inner wall of the annular groove is arc-shaped, and the end of the clamp rod is rounded.

[0015] The technical effects and advantages of this invention are as follows: 1. This invention can separate the liquid supply pipe from the nozzle when the liquid supply pipe is caught on a tree branch, thus preventing the drone from becoming unbalanced and falling due to the pulling of the liquid supply pipe, thereby protecting the drone. After separating the tree branch from the liquid supply pipe, the liquid supply pipe can be automatically reconnected to the nozzle to continue working. 2. After the liquid supply pipe is pulled apart from the nozzle, the present invention can recover the cleaning liquid injected into the liquid supply pipe, thus avoiding waste. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings, according to an embodiment of the present invention, is shown. Figure 2 A schematic diagram of the structure of the nozzle, liquid supply pipe and connecting assembly according to an embodiment of the present invention is shown; Figure 3 A cross-sectional view of the nozzle, liquid supply pipe and connecting assembly according to an embodiment of the present invention is shown. Figure 4 An embodiment of the present invention is shown. Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 A schematic diagram of the structure of the sealing plate according to an embodiment of the present invention is shown; In the diagram: 1. Drone; 2. Nozzle; 3. Liquid supply pipe; 4. First connecting ring; 5. Second connecting ring; 6. Rigid pipe; 7. Housing; 8. Clamping rod; 9. Pressure plate; 10. Spring; 11. Motor; 12. Take-up reel; 13. Pull rope; 14. Switch; 15. Sealing plate; 16. Stop; 17. Mounting pipe; 18. Pressure relief valve; 19. Return pipe; 20. Strapping strap; 21. Top rod; 22. Shaft; 23. Torsion spring; 24. Clamping ring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0018] This invention provides an unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings, such as... Figures 1 to 5As shown, it includes: drone 1, nozzle 2, liquid supply pipe 3, and connecting components; Drone 1 is used for exterior wall cleaning. Spray nozzle 2 is installed on drone 1 for spraying cleaning fluid. Specifically, spray nozzle 2 is connected to the bottom of drone 1 via a bracket. Liquid supply pipe 3 is installed at one end of spray nozzle 2 for supplying cleaning fluid into spray nozzle 2. Liquid supply pipe 3 is connected to a pump body (not shown in the figure) installed on the ground. The pump body draws out the cleaning fluid and injects it into the liquid supply pipe 3. A connecting component is used to connect spray nozzle 2 and liquid supply pipe 3, and can separate spray nozzle 2 from liquid supply pipe 3 when the liquid supply pipe 3 is caught, triggering drone 1 to hover.

[0019] In use, the cleaning fluid is pumped into the supply pipe 3 and injected into the nozzle 2 through the supply pipe 3. The cleaning fluid is then sprayed out from the end of the nozzle 2, working in conjunction with the flying drone 1 to clean the wall. As the drone 1 moves, if the supply pipe 3 below gets caught on a tree branch and cannot move, the connecting component will separate the nozzle 2 from the supply pipe 3 and trigger the drone 1 to hover, preventing the drone 1 from being pulled off balance and falling by the supply pipe 3. After the supply pipe 3 is separated from the tree branch, the connecting component drives the supply pipe 3 to reconnect with the nozzle 2, resuming the operation.

[0020] like Figures 2 to 4 As shown, the connecting components include: a first connecting ring 4, a second connecting ring 5, a rigid tube 6, a housing 7, a retaining ring 24, a retaining rod 8, a pressure plate 9, a spring 10, a suspension assembly, and a hovering control assembly; The first connecting ring 4 is fixedly sleeved on one end of the nozzle 2. The second connecting ring 5 is located below the first connecting ring 4. One end of the rigid tube 6 is fixedly connected to the second connecting ring 5, and the other end is fixedly connected to the liquid supply tube 3. The housing 7 is equidistantly and fixedly installed around the outside of the first connecting ring 4. The retaining ring 24 is fixedly connected to the top of the second connecting ring 5. The outer side of the retaining ring 24 is provided with an annular groove. The bottom of the first connecting ring 4 is provided with a retaining groove that matches the retaining ring 24. The retaining rod 8 is slidably disposed inside the housing 7. One end of the retaining rod 8 extends into the annular groove. The pressure plate 9 is fixedly sleeved on the outside of the retaining rod 8. The spring 10 is sleeved on the outside of the retaining rod 8. The suspension assembly is disposed inside the first connecting ring 4 and is used to suspend the retaining ring 24 and the second connecting ring 5 when the first connecting ring 4 is separated from the second connecting ring 5. The hovering control assembly is disposed on the housing 7 and is used to control the drone 1 to hover.

[0021] When the supply pipe 3 is caught and cannot move, the rigid pipe 6, the second connecting ring 5, and the retaining ring 24 also cannot move. As the drone 1 continues to fly, it moves the nozzle 2, the first connecting ring 4, the housing 7, and the retaining rod 8. The retaining rod 8 is squeezed by the ring groove, causing the pressure plate 9 to move and compress the spring 10, causing the retaining rod 8 to separate from the ring groove. The retaining groove eventually separates from the retaining ring 24, and the spring 10 returns to its original position, causing the pressure plate 9 and the retaining rod 8 to return to their original positions. At this time, the first connecting ring 4 separates from the second connecting ring 5. The suspension assembly suspends the retaining ring 24 and the second connecting ring 5 to prevent the retaining ring 24, the second connecting ring 5, the rigid pipe 6, and the supply pipe 3 from falling. Then, the drone 1 is controlled to hover. After the liquid supply pipe 3 is separated from the tree branch, the suspension assembly pulls the retaining ring 24 and the second connecting ring 5 upward, so that the retaining ring 24 enters the retaining groove. After the retaining ring 24 comes into contact with the retaining rod 8, it squeezes the retaining rod 8 again, causing it to move with the pressure plate 9 to compress the spring 10. When the ring groove and the retaining rod 8 are aligned, the spring 10 returns to its original position, along with the retaining rod 8 and the pressure plate 9. The retaining rod 8 comes into contact with the inner wall of the ring groove, completing the connection of the first connecting ring 4 and the second connecting ring 5. The elasticity of the spring 10 is sufficient to keep the retaining rod 8 in contact with the inner wall of the ring groove, so that when the drone 1 is flying and the liquid supply pipe 3 is not caught, the retaining ring 24 can be kept in the retaining groove.

[0022] like Figure 3 and Figure 4 As shown, the suspension assembly includes: motor 11, reel 12, pull rope 13, switch 14, and controller (not shown in the figure). Motor 11 is symmetrically fixedly installed inside the first connecting ring 4. Reel 12 is fixedly connected to the output shaft of motor 11. One end of pull rope 13 is fixedly connected to reel 12, and the other end is fixedly connected to snap ring 24. Pull rope 13 is wound on reel 12. Switch 14 is connected to one of the housings 7 through a fixing bracket. The position of switch 14 corresponds to the position of snap rod 8. The controller is a PLC controller, which is set on UAV 1 to control UAV 1 to hover and control the rotation speed of motor 11 output shaft. When motor 11 is not working, its output shaft can rotate under the action of external force.

[0023] When the first connecting ring 4 rises, it moves the motor 11 and the take-up reel 12 accordingly. The take-up reel 12 rotates under the pull of the pull rope 13, thus releasing the pull rope 13. The locking lever 8 moves towards the switch 14 under the pressure of the ring groove. Finally, the locking lever 8 presses the switch 14, and the switch 14, in conjunction with the controller, starts the motor 11. The output shaft of the motor 11 rotates slowly, thus rotating the take-up reel 12 and continuing to release the pull rope 13. The release speed of the pull rope 13 ensures that the movement of the drone 1 is not affected. During this process, the pull rope 13 remains taut, preventing the locking ring 24 from falling. After the switch 14 is pressed, it works with the controller to control the drone 1 to hover. During the time the controller sends the command, the drone 1 remains hovering. During operation, the pull rope 13 is continuously released, preventing the drone 1 from being pulled down. When the command is executed, the motor 11 stops, and the drone 1 is in a hovering state. When it is necessary to reset the second connecting ring 5, the motor 11 is started to rotate its output shaft in the opposite direction. Conversely, in conjunction with the take-up reel 12, the pull rope 13 is wound up, causing the retaining ring 24 to rise. After the retaining ring 24 comes into contact with the retaining rod 8 and is pressed against it, the retaining rod 8 presses the switch 14 again. At this time, the switch 14 does not work. Finally, the retaining rod 8 enters the ring groove to complete the reset. The bottom of the first connecting ring 4 is provided with a conical surface, and the top of the second connecting ring 5 is provided with a groove that mates with the conical surface. The guide of the conical surface and the groove ensures that the first connecting ring 4 and the second connecting ring 5 are aligned and reset.

[0024] like Figure 3 As shown, the rigid tube 6 has a sealing plate 15 inside, which is rotatably disposed inside the rigid tube 6. The rigid tube 6 has a reset assembly outside, which can reset the sealing plate 15. The rigid tube 6 has a stop block 16 inside, and the nozzle 2 has a push rod 21 inside, which corresponds to the position of the sealing plate 15. The rigid tube 6 has a recovery assembly that can recover the cleaning fluid.

[0025] When the second connecting ring 5 is not separated from the first connecting ring 4, the push rod 21 pushes open the sealing plate 15, and the rigid tube 6 opens. When the second connecting ring 5 is separated from the first connecting ring 4, the push rod 21 leaves the sealing plate 15, and the reset component resets the sealing plate 15, so that the sealing plate 15 abuts against the stop block 16. At this time, the sealing plate 15 is horizontal, blocking the rigid tube 6. The continuously injected cleaning fluid is recovered by the recovery component, so that the cleaning fluid will not flow to the outside and cause waste. When the second connecting ring 5 is combined with the first connecting ring 4, the push rod 21 pushes open the sealing plate 15 to tilt it, and opens the rigid tube 6. At this time, the recovery component stops working and the fluid supply is restored.

[0026] like Figure 3 and Figure 5 As shown, the recovery assembly includes: installation pipe 17, pressure relief valve 18, return pipe 19, and strapping 20; The installation pipe 17 is fixedly connected to the outside of the rigid pipe 6 and is connected to the rigid pipe 6. The pressure relief valve 18 is located inside the installation pipe 17. One end of the return pipe 19 is fixedly connected to the installation pipe 17 and the other end is connected to the recovery box on the ground (not shown in the figure). The strap 20 binds the return pipe 19 to the liquid supply pipe 3.

[0027] When the sealing plate 15 closes the rigid pipe 6, the continuously injected cleaning fluid pushes open the pressure relief valve 18 and enters the installation pipe 17. It then enters the recovery tank through the return pipe 19 for collection. When the sealing plate 15 opens the rigid pipe 6, the pressure inside the rigid pipe 6 decreases, and the pressure relief valve 18 closes. At this time, the cleaning fluid continues to enter the spray pipe 2 through the rigid pipe 6, restoring the fluid supply.

[0028] like Figure 3 and Figure 5 As shown, the reset assembly includes: a rotating shaft 22 and a torsion spring 23; The rotating shaft 22 is fixedly installed in the middle of the closed plate 15. The inner side of the rigid tube 6 is provided with a circular groove that matches the rotating shaft 22. The end of the rotating shaft 22 is rotatably installed in the circular groove. The torsion spring 23 is sleeved on the outside of the rotating shaft 22. The two ends of the torsion spring 23 are fixedly connected to the inner wall of the circular groove and the rotating shaft 22 respectively. The closed plate 15 is composed of a circular plate and a sealing ring sleeved on the outside of the circular plate.

[0029] When the push rod 21 leaves the sealing plate 15, the torsion spring 23, which has undergone torsional deformation, returns to its original position, causing the sealing plate 15, which carries the rotating shaft 22, to rotate horizontally. The sealing plate 15 then comes into contact with the stop block 16. The push rod 21 then presses the sealing plate 15 again, causing it to rotate with the rotating shaft 22 and torsionally deform the torsion spring 23, causing the sealing plate 15 to tilt and open the rigid tube 6.

[0030] like Figure 4 As shown, the inner wall of the annular groove is arc-shaped, and the end of the clamp 8 is round.

[0031] This causes the lever 8 to be squeezed as it moves along the annular groove.

[0032] Working principle: During use, the cleaning fluid is drawn from the pump body and injected into the supply pipe 3. The cleaning fluid enters the nozzle 2 through the supply pipe 3 and is sprayed out from the end of the nozzle 2. This works in conjunction with the flying drone 1 to clean the wall. As the drone 1 moves, when the supply pipe 3 below gets caught on a tree branch and cannot move, the rigid pipe 6, the second connecting ring 5, and the retaining ring 24 are also immobile. As the drone 1 continues to move, it carries the nozzle 2, the first connecting ring 4, the housing 7, and the retaining rod 8. The retaining rod 8 is squeezed by the ring groove, causing the pressure plate 9 to move and compress the spring 10, causing the retaining rod 8 to separate from the ring groove. Finally, the retaining groove separates from the retaining ring 24. Spring 10 resets, causing pressure plate 9 and lever 8 to reset as well. At this time, the first connecting ring 4 separates from the second connecting ring 5. As the first connecting ring 4 rises, it moves motor 11 and take-up reel 12. Take-up reel 12 rotates under the pull of pull rope 13, thus releasing pull rope 13. During this process, lever 8 is squeezed by the ring groove and moves towards switch 14. Finally, lever 8 squeezes switch 14, and switch 14, in conjunction with the controller, starts motor 11. The output shaft of motor 11 slowly rotates, causing take-up reel 12 to rotate and continue releasing pull rope 13. The release speed of pull rope 13 ensures that the movement of UAV 1 is not affected. During this process, pull rope 1... 3. Maintain the taut state to prevent the retaining ring 24 from falling. After the switch 14 is pressed, it works with the controller to control the drone 1 to hover. During the time the controller sends the command, the drone 1 maintains its movement, and the pull rope 13 continues to be released, preventing the drone 1 from being pulled down. When the command is completed, the motor 11 stops, and the pull rope 13 is completely released from the take-up reel 12. The drone 1 is in a hovering state, preventing it from being pulled off balance and falling by the liquid supply pipe 3. After the ground staff separates the liquid supply pipe 3 from the tree branch, they start the motor 11 to make its output shaft rotate in the opposite direction, which works in conjunction with the take-up reel 12 to wind up the pull rope 13, so that the retaining ring 24 is pulled down. As the device rises, the retaining ring 24 enters the retaining groove. After the retaining ring 24 comes into contact with the retaining rod 8, it squeezes the retaining rod 8 again, causing it to move with the pressure plate 9 and compress the spring 10. When the ring groove and the retaining rod 8 are aligned, the spring 10 returns to its original position, along with the retaining rod 8 and the pressure plate 9. The retaining rod 8 comes into contact with the inner wall of the ring groove, completing the connection between the first connecting ring 4 and the second connecting ring 5. The elastic force of the spring 10 is sufficient to keep the retaining rod 8 in contact with the inner wall of the ring groove, so that when the drone 1 is flying and the liquid supply pipe 3 is not caught, the retaining ring 24 can be kept in the retaining groove. During this process, the retaining rod 8 squeezes the switch 14 again. At this time, the switch 14 does not work. Finally, the retaining rod 8 enters the ring groove and completes the reset. When the second connecting ring 5 separates from the first connecting ring 4, the push rod 21 leaves the sealing plate 15. At this time, the torsion spring 23, which has undergone torsional deformation, returns to its original position, causing the sealing plate 15, which carries the rotating shaft 22, to rotate horizontally. The sealing plate 15 then contacts the stop block 16, and the sealing plate 15 seals the rigid pipe 6. The cleaning fluid continuously injected inside pushes open the pressure relief valve 18 and enters the installation pipe 17. It then enters the recovery tank through the return pipe 19 for collection. When the second connecting ring 5 and the first connecting ring 4 reconnect, the push rod 21 squeezes the sealing plate 15 again, causing the rotating shaft 22 to rotate and torsion deform the torsion spring 23. This causes the sealing plate 15 to tilt and open the rigid pipe 6. After the sealing plate 15 opens the rigid pipe 6, the pressure inside the rigid pipe 6 decreases, and the pressure relief valve 18 closes. At this time, the cleaning fluid continues to enter the spray pipe 2 through the rigid pipe 6, restoring the fluid supply.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings, characterized in that, include: Drone (1) is used for exterior wall cleaning; The nozzle (2) is mounted on the UAV (1) and is used to spray cleaning fluid; A liquid supply pipe (3) is provided at one end of the nozzle (2) for supplying cleaning liquid into the nozzle (2); A connecting component is used to connect the nozzle (2) to the liquid supply pipe (3), and can separate the nozzle (2) from the liquid supply pipe (3) when the liquid supply pipe (3) is caught, and trigger the drone (1) to hover.

2. The unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings according to claim 1, characterized in that: The connection component includes: The first connecting ring (4) is sleeved on one end of the nozzle (2); The second connecting ring (5) is located below the first connecting ring (4); A rigid tube (6) is connected at one end to the second connecting ring (5) and at the other end to the liquid supply tube (3); The housing (7) is equidistantly arranged around the outside of the first connecting ring (4); A retaining ring (24) is connected to the top of the second connecting ring (5). The outer side of the retaining ring (24) is provided with a ring groove, and the bottom of the first connecting ring (4) is provided with a retaining groove that matches the retaining ring (24). A lever (8) is slidably disposed inside the housing (7), with one end of the lever (8) extending into the annular groove; The pressure plate (9) is sleeved on the outside of the clamping rod (8); A spring (10) is sleeved on the outside of the lever (8); A suspension assembly is disposed inside the first connecting ring (4) for suspending the retaining ring (24) and the second connecting ring (5) when the first connecting ring (4) and the second connecting ring (5) are separated; A hovering control component is provided on the housing (7) for controlling the drone (1) to hover.

3. The unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings according to claim 2, characterized in that: The suspension assembly includes: The motor (11) is symmetrically installed inside the first connecting ring (4); A take-up reel (12) is connected to the output shaft of the motor (11); A pull rope (13) is connected at one end to the take-up reel (12) and at the other end to the retaining ring (24). The pull rope (13) is wound onto the take-up reel (12). A switch (14) is connected to one of the housings (7) via a fixing bracket, and the position of the switch (14) corresponds to the position of the lever (8); A controller is installed on the UAV (1) for controlling the UAV (1) to hover and controlling the rotation speed of the output shaft of the motor (11).

4. The unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings according to claim 3, characterized in that: When the motor (11) is not in operation, its output shaft can rotate under the action of external force.

5. The unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings according to claim 4, characterized in that: The rigid tube (6) is provided with a sealing plate (15) inside, and the sealing plate (15) is rotatably disposed inside the rigid tube (6). The rigid tube (6) is provided with a reset assembly outside, which can reset the sealing plate (15). The rigid tube (6) is provided with a stop block (16) inside. The nozzle (2) is provided with a push rod (21) inside, and the push rod (21) is positioned corresponding to the sealing plate (15). The rigid tube (6) is provided with a recovery assembly that can recover the cleaning fluid.

6. The unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings according to claim 5, characterized in that: The recycling component includes: An installation tube (17) is connected to the outside of the rigid tube (6), and the installation tube (17) is in communication with the rigid tube (6); A pressure relief valve (18) is disposed inside the mounting pipe (17); The return pipe (19) is connected at one end to the mounting pipe (17); Use a strap (20) to tie the return pipe (19) to the supply pipe (3).

7. The unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings according to claim 6, characterized in that: The reset component includes: A rotating shaft (22) is fixedly installed in the middle of the closed plate (15). The inner side of the rigid tube (6) is provided with a circular groove that matches the rotating shaft (22). The end of the rotating shaft (22) is rotatably installed in the circular groove. A torsion spring (23) is sleeved on the outside of the rotating shaft (22), and the two ends of the torsion spring (23) are fixedly connected to the inner wall of the circular groove and the rotating shaft (22) respectively.

8. The unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings according to claim 7, characterized in that: The sealing plate (15) consists of a circular plate and a sealing ring fitted outside the circular plate.

9. The unmanned aerial vehicle for cleaning the exterior walls of high-altitude buildings according to claim 8, characterized in that: The inner wall of the annular groove is arc-shaped, and the end of the clamp (8) is round.

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