Telescopic water spraying arm assembly for cleaning outer wall of unmanned aerial vehicle

Abstract

The application provides a telescopic water spraying arm assembly for unmanned aerial vehicle outer wall cleaning, relates to the technical field of unmanned aerial vehicle outer wall cleaning, and comprises an unmanned aerial vehicle body, landing gears fixed on the bottom of the unmanned aerial vehicle body, a receiving frame fixed to the bottom of the unmanned aerial vehicle body, a bearing assembly installed at the bottom outlet end of the receiving frame, a pipeline assembly placed in the bearing assembly, and a propelling assembly arranged on the landing gear at one side of the bottom of the unmanned aerial vehicle body. Before receiving the spliced pipe, the vertical plate and the horizontal plate are moved outward through the bidirectional electric push rod, the side plate is retracted to the inner side of the sliding plate, the spliced pipe is conveniently dropped into the bearing frame, the side plate is extruded and contacted with the two ends of the wiping sleeve through the sliding plate by the bidirectional electric push rod, the driving screw rod in the moving groove drives the screw block to slide along the moving groove, the spliced pipe and the spray head pipe are pushed outward, the bearing frame is pushed out, the spray head pipe and the spliced pipe at the front end are prevented from falling, the internal area of the bearing frame is emptied, and new spliced pipes are conveniently dropped.

Description

Technical Field

[0001] This disclosure relates to the field of drone exterior cleaning technology, and more particularly to a retractable water spray arm assembly for drone exterior cleaning. Background Technology

[0002] Drone-based exterior wall cleaning relies heavily on the drone's stable flight capabilities and precise positioning system. Using GPS navigation and visual recognition technology, the drone accurately identifies the outline of the building's exterior and the areas requiring cleaning, ensuring precision in the cleaning operation. Simultaneously, the drone's onboard cleaning equipment, such as high-pressure water guns, uses high-pressure water jets to impact the wall surface, removing stains; while spraying devices apply cleaning agents to soften the stains before rinsing. Some advanced drones are also equipped with rotating brush heads for deep cleaning of stubborn stains. Drone-based exterior wall cleaning is widely used for cleaning the exterior walls of various high-rise buildings, commercial complexes, historical buildings, and public facilities. Especially for high-altitude areas that are difficult to reach using traditional methods, such as building rooftops, glass curtain walls, and irregularly shaped structures, drone-based exterior wall cleaning demonstrates unparalleled advantages. It not only improves cleaning efficiency but also significantly reduces operational risks, ensuring the safety of cleaning personnel.

[0003] In existing technologies, drone water spray arms are mostly electrically retractable kits, so the length that can be extended is limited, and the spraying angle and direction are generally fixed and cannot be adjusted. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide a retractable water spray arm assembly for cleaning the exterior of drones.

[0006] To achieve the above objectives, this disclosure provides a retractable spray arm assembly for cleaning the exterior of a drone, a drone body, landing gear fixed to both sides of the bottom of the drone body, a storage frame fixed to the bottom center of the drone body, a support component installed at the bottom outlet end of the storage frame, a pipe assembly placed inside the support component, a propulsion component installed on the landing gear on one side of the bottom of the drone body, a suction pump fixed to the tail end of the drone body, and a connecting pipe fixed inside the suction pump, and a lifting component installed at the bottom of the support component; the support component includes a support frame, the support frame is fixed to the bottom of the storage frame, sliding plates are slidably inserted into the top two sides of the support frame, and the bottom of the support frame... A movable slot is provided in the middle, and a drive screw is installed inside the movable slot. A screw block is slidably installed inside the movable slot, and the screw block is threaded onto the surface of the drive screw. The two sides of the screw block are fixedly connected to the slide plate. The pipe assembly includes a splicing pipe, and multiple sets of splicing pipes are stored inside the storage frame. A second threaded pipe is fixed to the front end of the splicing pipe facing the drone body. A nozzle pipe is installed at the outer end of the second threaded pipe, and a first threaded pipe is installed at the other end of the splicing pipe. The propulsion assembly includes a movable frame, which slides along the inner side of the landing gear. A crossbar is provided on the side of the movable frame facing the support frame. The crossbar is provided with toothed plates at the front and rear ends of the splicing pipe placed inside the support frame.

[0007] Optionally, the lifting assembly further includes: a base plate, insert columns, and a support plate. The base plate is located at the bottom of the rear end of the support frame. Support plates are inserted into both sides of the bottom of the support frame at the moving groove. Insert columns are fixed at the top of the base plate corresponding to the positions of the support plates, and the tops of the insert columns are slidably inserted into the support frame and fixedly connected to the support plates. A sixth electric push rod is fixed on both sides of the suction pump, and the extended end of the sixth electric push rod is fixedly connected to the base plate.

[0008] Optionally, baffles are slidably inserted into both sides of the outlet end of the storage frame, an extrusion plate is slidably installed on the top of the storage frame, and connecting plates are rotatably installed on both sides of the bottom plate, with the top of the connecting plates rotatably connected to the outer side of the baffles via a pivot; wherein, a first spring is fixedly fixed at equal intervals on the inner wall of the top of the storage frame, and the bottom of the first spring is fixedly connected to the extrusion plate, and a third spring is fixedly fixedly fixed at equal intervals on the top of the baffles, with the other end of the third spring fixedly connected to the outer wall of the storage frame.

[0009] Optionally, the load-bearing assembly further includes: a bidirectional electric push rod, a vertical plate, a horizontal plate, and a side plate. The bottom of the screw block is fixed with a bidirectional electric push rod, and the two extended ends of the bidirectional electric push rod are fixed with a vertical plate. A horizontal plate is provided on the outer side of the vertical plate, and side plates are fixed at both ends of the horizontal plate. The side plates slide through the horizontal plate, and the top of the vertical plate is fixedly connected to the horizontal plate. The load-bearing frame has movable notches on both sides corresponding to the positions of the sliding plate, and the sliding plate moves along the movable notches.

[0010] Optionally, the pipe assembly further includes: an axial turntable, a shaft, and a threaded ring. The axial turntable is rotatably mounted on the end of the first threaded pipe facing the splicing pipe, and a shaft is mounted on the side of the axial turntable facing the splicing pipe. The splicing pipe is rotatably connected to the axial turntable via the shaft. The end of the connecting pipe facing the first threaded pipe and the end of the nozzle pipe facing the second threaded pipe are both provided with threaded layers. Threaded rings are threaded onto the outer surfaces of the threaded layers of the second threaded pipe and the connecting pipe. The outer ring of the splicing pipe is fitted with a wiping sleeve, and the side plates at both ends of the horizontal plate are in contact with the front and rear ends of the wiping sleeve by compression.

[0011] Optionally, the propulsion assembly further includes: a third electric push rod, a fourth electric push rod, and a fifth electric push rod. The third electric push rod is fixedly located on the inner side of the landing gear corresponding to the position of the moving frame, and the extended end of the third electric push rod is fixedly connected to the moving frame. The fourth electric push rod is fixedly located at both ends of the moving frame, and the extended end of the fourth electric push rod is fixedly connected to the crossbeam. The fifth electric push rod is fixedly located at the top of both ends of the crossbeam, and the extended end of the fifth electric push rod is fixedly connected to the toothed plate. The outer ring of the helical ring at the front and rear ends of the splicing pipe is fitted with a toothed ring, and the toothed plate passes through the moving notch and engages with the toothed ring of the helical ring.

[0012] Optionally, a gear ring is rotatably mounted on the side of the axial turntable. The outer ring of the gear ring is provided with a retaining ring, which is fixed to the side of the axial turntable near the rotating shaft. A second gear is meshed with one side of the gear ring. A connecting shaft is fixed at the axis of the second gear, and both ends of the connecting shaft rotatably extend out of the axial turntable. A slot is provided at the axis of the connecting shaft, and the axial turntable has the same slot at the corresponding position. A rod is slidably inserted into the slot of the connecting shaft. A second baffle is fixed at one end of the rod, and the second baffle slides along the inside of the slot. A first baffle is fixed at the other end of the rod. A second spring is fixed to the first baffle and the side of the axial turntable near the rotating shaft. The diameter of the slot inside the connecting shaft is larger than that of the rod.

[0013] Optionally, a first gear is fixed to the bottom of the rotating shaft, a rack is fixed to the side of the insert rod facing the first gear, and the first gear and the rack are meshed together. The second spring is located on the other side of the insert rod with the rack. A connecting frame is provided on the side of the axial turntable away from the rotating shaft, and a drive motor is fixed to the position of the connecting frame corresponding to the connecting shaft. The output end of the drive motor is fixed with a plug, and the plug is slidably engaged in the slot of the connecting shaft.

[0014] Optionally, a first electric push rod is fixed to the outer side of the skateboard near the connecting frame, and a second electric push rod is fixed to the extended end of the first electric push rod, with the extended end of the second electric push rod being fixedly connected to the connecting frame.

[0015] Optionally, an electric sprayer is fixed to the top of the nozzle pipe, and a rangefinder is fixedly installed on the top of the electric sprayer.

[0016] The technical solution provided in this disclosure may include the following beneficial effects:

[0017] 1. When the splicing pipe needs to be released from the storage frame, the sixth electric push rod pushes the base plate to move, the insert pin enters the inside of the support frame and pushes the support plate upward. As the base plate moves, the connecting plate rotates and pushes the baffle along the outlet end of the storage frame to both sides, opening the outlet end of the storage frame. The splicing pipe inside the storage frame is sent out from the outlet end of the storage frame under the pressure of the top pressing plate and falls between the two support plates. When the base plate and the insert pin move downward to put the splicing pipe back into the support frame, the baffle will also re-seal the outlet end of the storage frame to prevent the remaining splicing pipe from falling. Similarly, the spliced ​​pipe can be disassembled and sent back into the storage frame in the same way.

[0018] 2. Before receiving the splicing pipe, the present invention moves the vertical and horizontal plates outward by means of a bidirectional electric push rod, and retracts the side plate into the inside of the slide plate, so that the splicing pipe can fall into the inside of the support frame. The bidirectional electric push rod pushes the side plate through the slide plate and squeezes it into contact with both ends of the wiping sleeve. The drive screw inside the moving groove drives the screw block to slide along the moving groove, pushing the splicing pipe and the nozzle pipe outward and pushing them out of the support frame. At the same time, it prevents the nozzle pipe and the splicing pipe at the front end from falling off, and frees up the area inside the support frame to facilitate the dropping of the new splicing pipe.

[0019] 3. In this invention, the fifth electric push rod lowers the toothed plate to engage with the toothed ring of the screw ring. Subsequently, the fourth electric push rod pulls the toothed plate outward, and the toothed plate engages with the toothed ring of the screw ring, achieving clockwise rotation. When the toothed plate penetrates a shorter distance, through the cooperation of the fifth and fourth electric push rods, the screw ring and toothed ring rotate counterclockwise by the advancement of the toothed plate. Both methods can achieve forward and reverse rotation of the screw ring, thereby enabling the screw ring to be moved and threadedly connected between the first threaded pipe, the second threaded pipe, and the threaded layer, achieving splicing and locking between multi-section splicing pipes. It also includes locking the nozzle pipe and connecting pipe to the splicing pipe. The forward and reverse rotation of the screw ring can separate the screw ring from the first threaded pipe and the threaded layer, achieving the separation of the splicing pipe for re-addition of the splicing pipe.

[0020] 4. In this invention, as the sliding plate moves outward along with the drive screw inside the moving slot, pushing out the splicing pipe connecting the nozzle pipe, the front end of the sliding plate, through the lifting of the first electric push rod and the pushing of the second electric push rod, causes the insert block to insert into the slot of the connecting shaft and press against the insert rod, causing the insert rod to be pushed out from the rear end of the connecting shaft. The rack on the side of the insert rod meshes with the first gear, causing the rotating shaft to rotate, causing the splicing pipe to rotate 90 degrees along the rotating shaft, changing the direction of the nozzle pipe. At this time, the drive motor drives the insert block to rotate. Because of the engagement between the insert block and the connecting shaft, the second gear... The wheel meshes with the gear ring, driving the rotating shaft and connecting shaft to rotate along the axial turntable center with the gear ring. After the frontmost splicing pipe and nozzle pipe are bent at ninety degrees, they can rotate and spray, thus cleaning the side of the exterior wall in a rotating manner. When the slide plate retracts into the moving notch of the support frame, the second electric push rod separates the insert block from the connecting shaft, and the first electric push rod moves the insert block and the second electric push rod away from the support frame to avoid interference from the support frame. Through the wiping sleeve on the outside of the splicing pipe, in conjunction with the rotation of the axial turntable, the front of the exterior wall can be wiped and cleaned.

[0021] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the overall structure of a telescopic water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of the bottom structure of the drone body in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of the internal structure of the storage frame in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram of the internal structure of the support frame in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0027] Figure 5 This is a schematic diagram of the propulsion component structure in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0028] Figure 6 This is a schematic diagram of the supporting component structure in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0029] Figure 7 This is a schematic diagram of the splicing pipe structure in a telescopic water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0030] Figure 8 This is a schematic diagram of the connection between the sliding plate and the rotating shaft in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0031] Figure 9 This is a schematic diagram of the internal structure of the axial turntable in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0032] Figure 10 This is a schematic diagram of the connection between the insert post and the connecting shaft in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0033] Figure 11 This is a schematic diagram of the connection between the insert block and the connecting shaft in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0034] Figure 12 This is a schematic diagram of the connection between the nozzle pipe and the splicing pipe in a telescopic water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0035] Figure 13 This is a schematic diagram of the connection between the insert rod and the connecting shaft in a retractable water spray arm assembly for cleaning the outer wall of a drone according to an embodiment of this disclosure;

[0036] As shown in the figure: 1. Drone body; 11. Landing gear; 12. Storage frame; 13. First spring; 14. Squeezing plate; 15. Suction pump; 16. Delivery pipe; 17. Connecting pipe;

[0037] 2. Pipe assembly; 21. Splicing pipe; 22. Wiping sleeve; 23. First threaded pipe; 24. Axial turntable; 25. Rotating shaft; 26. Second threaded pipe; 27. Threaded ring; 28. First gear; 29. ​​Insert rod; 210. Second spring; 211. Second gear; 212. First electric push rod; 213. Second electric push rod; 214. Connecting frame; 215. Gear ring; 216. Connecting shaft; 217. Drive motor; 218. Insert block; 219. Sprayer pipe; 220. Threaded layer; 221. Electric sprayer; 222. Rangefinder; 223. First baffle plate; 224. Second baffle plate; 225. Retaining ring;

[0038] 3. Propulsion assembly; 31. Third electric actuator; 32. Moving frame; 33. Fourth electric actuator; 34. Cross frame; 35. Fifth electric actuator; 36. Tooth plate;

[0039] 4. Load-bearing components; 41. Load-bearing frame; 42. Moving notch; 43. Slide plate; 44. Screw block; 45. Two-way electric actuator; 46. Vertical plate; 47. Horizontal plate; 48. Side plate; 49. Moving groove;

[0040] 5. Lifting assembly; 51. Baffle; 52. Sixth electric push rod; 53. Base plate; 54. Connecting plate; 55. Insert column; 56. Support plate; 57. Third spring. Detailed Implementation

[0041] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, this embodiment of the present disclosure proposes a retractable water spray arm assembly for cleaning the outer wall of a drone. The drone body 1 has landing gear 11 fixed to both sides of its bottom. A storage frame 12 is fixed to the bottom center of the drone body 1. A support assembly 4 is installed at the bottom outlet end of the storage frame 12. A pipe assembly 2 is placed inside the support assembly 4. A propulsion assembly 3 is provided on the landing gear 11 on one side of the bottom of the drone body 1. A suction pump 15 is fixed to the tail end of the drone body 1, and a connecting pipe 17 is fixed inside the suction pump 15. The bottom of the bearing assembly 4 is provided with a lifting assembly 5; the bearing assembly 4 includes a bearing frame 41, which is fixed to the bottom of the storage frame 12. Slide plates 43 are slidably inserted into the top two sides of the bearing frame 41. A moving groove 49 is opened in the middle of the bottom of the bearing frame 41, and a drive screw is installed inside the moving groove 49. A screw block 44 is slidably installed inside the moving groove 49, and the screw block 44 is threaded onto the surface of the drive screw. The two sides of the screw block 44 are fixedly connected to the slide plate 43; the pipe assembly 2 includes a splicing pipe 21, the... The splicing pipe 21 has multiple sets stored inside the storage frame 12. A second threaded pipe 26 is fixed to the front end of the splicing pipe 21 facing the drone body 1. A nozzle pipe 219 is installed at the outer end of the second threaded pipe 26. A first threaded pipe 23 is installed at the other end of the splicing pipe 21. The propulsion assembly 3 includes a moving frame 32, which slides along the inner side of the landing gear 11. A crossbar 34 is provided on the side of the moving frame 32 facing the support frame 41. The crossbar 34 has toothed plates 3 at the front and rear ends corresponding to the splicing pipe 21 placed inside the support frame 41. 6. When using the device, the drone body 1 is manually controlled to fly to the height required for cleaning. Based on the distance between the drone and the outer wall, the splicing pipe 21 is sent out from the storage frame 12 through the lifting component 5 and falls into the bearing frame 41 of the bearing component 4. The splicing pipe 21 is connected to the connecting pipe 17 and the nozzle pipe 219 through the pushing component 3, thereby extending the water spray length. The other end of the suction pump 15 is connected to the delivery pipe 16, and the bottom of the delivery pipe 16 is connected to the water source. After the suction pump 15 draws water from the water source, it sprays water from the connecting pipe 17, the splicing pipe 21 and the nozzle pipe 219.

[0043] like Figure 3 , Figure 4 and Figure 5As shown, in some embodiments, the lifting assembly 5 further includes: a base plate 53, insert posts 55, and a support plate 56. The base plate 53 is disposed at the bottom of the rear end of the support frame 41. The support plates 56 are inserted into both sides of the bottom of the support frame 41 at the moving groove 49. The insert posts 55 are fixed at the top of the base plate 53 corresponding to the positions of the support plates 56, and the tops of the insert posts 55 are slidably inserted into the support frame 41 and fixedly connected to the support plates 56. A sixth electric push rod 52 is fixed to both sides of the suction pump 15. The extended end of the sixth electric push rod 52 is fixedly connected to the base plate 53. Baffles 51 are slidably inserted into both sides of the outlet end of the storage frame 12. A pressing plate 14 is slidably installed on the top of the storage frame 12. Connecting plates 54 are rotatably installed on both sides of the base plate 53, and the tops of the connecting plates 54 are rotatably connected to the outer side of the baffles 51 via a rotating shaft 25. The storage frame 12 has a first spring 13 fixed at equal intervals on its top inner wall, and the bottom of the first spring 13 is fixedly connected to the extrusion plate 14. The baffle 51 has a third spring 57 fixed at equal intervals on its top, and the other end of the third spring 57 is fixedly connected to the outer wall 12 of the storage frame. The bearing assembly 4 also includes a bidirectional electric push rod 45, a vertical plate 46, a horizontal plate 47, and a side plate 48. The bottom of the screw block 44 is fixed with a bidirectional electric push rod 45, and the two extended ends of the bidirectional electric push rod 45 are fixed with a vertical plate 46. The outer side of the vertical plate 46 is provided with a horizontal plate 47, and the two ends of the horizontal plate 47 are fixed with side plates 48. The side plates 48 slide through the horizontal plate 47, and the top of the vertical plate 46 is fixedly connected to the horizontal plate 47. The bearing frame 41 has a moving notch 42 on both sides corresponding to the position of the sliding plate 43, and the sliding plate 43 moves along the moving notch 42.

[0044] Understandably, when the splicing pipe 21 needs to be released from the storage frame 12, the sixth electric push rod 52 pushes the base plate 53 to move, the insert 55 penetrates into the bearing frame 41 and pushes the support plate 56 upward. As the base plate 53 moves, the connecting plate 54 rotates and pushes the baffle 51 along the outlet end of the storage frame 12 to both sides, opening the outlet end of the storage frame 12. The splicing pipe 21 inside the storage frame 12 is sent out from the outlet end of the storage frame 12 under the pressure of the top pressing plate 14 and falls between the two support plates 56. When the base plate 53 and the insert 55 move downward to put the splicing pipe 21 back into the bearing frame 41, the baffle 51 will also re-seal the outlet end of the storage frame 12 to prevent the remaining splicing pipe 21 from falling out. Similarly, the spliced ​​splicing pipe 21 can be disassembled and sent back into the storage frame 12 in the same way. Figure 3 and Figure 4It is clear that, firstly, the lifting and lowering movement of the base plate 53 is driven by the extended end of the sixth electric push rod 52. Therefore, the movement of the base plate 53 itself is limited and guided, and can only move vertically. Secondly, the baffle 51 slides and inserts along the outlet end of the storage frame 12, and is itself limited by the lateral direction of the storage frame 12. Moreover, the third spring 57 at the top of the baffle 51 also gives the baffle 51 a lateral elastic force after lateral movement. It is also important to note that the connecting plate 54 connecting the base plate 53 and the baffle 51, when the base plate 53 is at its lowest position, the baffle 51... The outlet end of the storage box 12 is sealed, while the connecting plate 54 tilts upward. That is to say, when the bottom plate 53 drives the connecting plate 54 to move upward, the connecting plate 54 will have vertical and horizontal components of force. Because the baffle 51 is limited laterally, it will pull the baffle 51 outward and open the outlet end of the storage box 12. In this process, because the movement direction of the bottom plate 53 is fixed and the movement direction of the baffle 51 is fixed, the connecting plate 54, as a connecting part, will not produce other changes. It will only push the baffle 51 to move laterally, thus avoiding the problem of quadrilateral instability.

[0045] like Figure 4 , Figure 5 and Figure 7 As shown, in some embodiments, the bearing assembly 4 further includes: a bidirectional electric push rod 45, a vertical plate 46, a horizontal plate 47, and a side plate 48. The bottom of the screw block 44 is fixed with the bidirectional electric push rod 45, and the two extended ends of the bidirectional electric push rod 45 are fixed with the vertical plate 46. The outer side of the vertical plate 46 is provided with the horizontal plate 47, and the two ends of the horizontal plate 47 are fixed with the side plate 48. The side plate 48 slides through the horizontal plate 47, and the top of the vertical plate 46 is fixedly connected to the horizontal plate 47. The bearing frame 41 has movable notches 42 on both sides corresponding to the positions of the sliding plate 43, and the sliding plate 43 moves along the movable notches 42.

[0046] Understandably, before receiving the splicing pipe 21, the vertical plate 46 and horizontal plate 47 are moved outward by the bidirectional electric push rod 45, and the side plate 48 is retracted to the inside of the slide plate 43, so that the splicing pipe 21 can fall into the inside of the support frame 41. The side plate 48 is pushed through the slide plate 43 and pressed into contact with the two ends of the wiping sleeve 22 by the bidirectional electric push rod 45. The drive screw inside the moving groove 49 drives the screw block 44 to slide along the moving groove 49, pushing the splicing pipe 21 and the nozzle pipe 219 outward, pushing them out of the support frame 41, while preventing the front nozzle pipe 219 and the splicing pipe 21 from falling off, thus freeing up the area inside the support frame 41 to facilitate the dropping of the new splicing pipe 21.

[0047] like Figure 6 , Figure 8 and Figure 12As shown, in some embodiments, the propulsion assembly 3 further includes: a third electric push rod 31, a fourth electric push rod 33, and a fifth electric push rod 35. The third electric push rod 31 is fixedly located on the inner side of the landing gear 11 corresponding to the position of the moving frame 32, and the extended end of the third electric push rod 31 is fixedly connected to the moving frame 32. The fourth electric push rod 33 is fixedly located at both ends of the moving frame 32, and the extended end of the fourth electric push rod 33 is fixedly connected to the cross frame 34. The fifth electric push rod 35 is fixedly located at the top of both ends of the cross frame 34, and the extended end of the fifth electric push rod 35 is fixedly connected to the toothed plate 36. The outer ring of the threaded ring 27 at the front and rear ends of the splicing pipe 21 is fitted with a toothed ring, and the toothed plate 36 passes through the moving notch 42 and engages with the toothed ring of the threaded ring 27.

[0048] It should be noted that the toothed plate 36 can achieve forward and reverse rotation of the screw ring 27. For example, when installing a new splicing pipe 21, firstly, the first threaded pipe 23 of the original splicing pipe 21 is separated from the screw ring 27 on the connecting pipe 17. Then, after the splicing pipe 21 and the nozzle pipe 219 are pushed outward, the new splicing pipe 21 is lowered from the storage frame 12. At this time, the crossbar 34 is moved towards the support frame 41 by the fourth electric push rod 33, and the toothed plate 36 is inserted through the moving notch 42. Because the slide plate 43 moves outward along the moving notch 42 at this time, when the toothed plate 36 is just inserted into the support frame 41, the toothed plate 36 is located at the top of the screw ring 27 and does not contact the screw ring 27. It is important to note that the insertion distance of the toothed plate 36 can determine the meshing direction with the screw ring 27. For example, if the toothed plate 36 is inserted a long distance, the fifth electric push rod 35 will push the toothed plate... The toothed plate 36 descends and engages with the toothed ring of the screw ring 27. Then, the fourth electric push rod 33 pulls the toothed plate 36 outward, and the toothed plate 36 engages with the toothed ring of the screw ring 27, achieving clockwise rotation. When the toothed plate 36 penetrates a short distance, through the cooperation of the fifth electric push rod 35 and the fourth electric push rod 33, the screw ring 27 and the toothed ring rotate counterclockwise by the push of the toothed plate 36. The screw ring 27 can be rotated in both directions, thus allowing the screw ring 27 to be moved and threadedly connected between the first threaded tube 23, the second threaded tube 26 and the threaded layer 220, achieving splicing and locking between the multi-section splicing pipe 21. It also includes the locking connection between the nozzle pipe 219 and the connecting pipe 17 and the splicing pipe 21. The forward and reverse rotation of the screw ring 27 can separate the screw ring 27 from the first threaded tube 23 and the threaded layer 220, achieving the separation of the splicing pipe 21 for re-addition of the splicing pipe 21.

[0049] like Figure 9 , Figure 10 , Figure 11 and Figure 13As shown, in some embodiments, a gear ring 215 is rotatably mounted on the side of the axial turntable 24. A retaining ring 225 is provided on the outer ring of the gear ring 215. The retaining ring 225 is fixed to the side of the axial turntable 24 near the rotating shaft 25. A second gear 211 is meshed with one side of the gear ring 215. A connecting shaft 216 is fixed at the axis of the second gear 211, and both ends of the connecting shaft 216 rotatably extend out of the axial turntable 24. A slot is provided at the axis of the connecting shaft 216, and the axial turntable 24 has a corresponding slot. A rod 29 is slidably inserted into the slot of the connecting shaft 216. A second baffle 224 is fixed to one end of the rod 29 and slides along the inside of the slot. A first baffle 223 is fixed to the other end of the rod 29. A second spring 223 is fixed to the first baffle 223 and the side of the axial turntable 24 near the rotating shaft 25. 10. The slot inside the connecting shaft 216 is larger than the diameter of the insert rod 29. A first gear 28 is fixed to the bottom of the rotating shaft 25. A rack is fixed to the side of the insert rod 29 facing the first gear 28, and the first gear 28 is meshed with the rack. The second spring 210 is located on the other side of the insert rod 29 with the rack. A connecting frame 214 is provided on the side of the axial turntable 24 away from the rotating shaft 25, and a drive motor 217 is fixed to the connecting frame 214 at the position corresponding to the connecting shaft 216. A plug block 218 is fixed to the output end of the drive motor 217. The plug block 218 is slidably engaged in the slot inside the connecting shaft 216. A first electric push rod 212 is fixed to the outer side of the slide plate 43 near the connecting frame 214, and a second electric push rod 213 is fixed to the extended end of the first electric push rod 212. The extended end of the second electric push rod 213 is fixedly connected to the connecting frame 214.

[0050] It should be noted that as the sliding plate 43 moves outward along with the drive screw inside the moving slot 49, pushing the splicing pipe 21 connecting the nozzle pipe 219 outward, the front end of the sliding plate 43, through the lifting and lowering of the first electric push rod 212 and the pushing of the second electric push rod 213, causes the insert block 218 to be inserted into the slot of the connecting shaft 216 and to press against the insert rod 29, causing the insert rod 29 to be pushed out from the rear end of the connecting shaft 216. The second baffle plate 224 enters the slot of the axial turntable 24 near the rotating shaft 25. The rack on the side of the insert rod 29 meshes with the first gear 28, causing the rotating shaft 25 to rotate, causing the splicing pipe 21 to rotate 90 degrees along the rotating shaft 25, changing the direction of the nozzle pipe 219. At this time, the insert rod 29... Separation from the connecting shaft 216, and with the insertion block 218 snapping into the slot of the connecting shaft 216, the drive motor 217 drives the insertion block 218 to rotate. Because the insertion block 218 is snapped into the connecting shaft 216, the second gear 211 meshes with the gear ring 215, causing the rotating shaft 25 and the connecting shaft 216 to rotate axially around the center of the turntable 24 along with the gear ring 215. After the foremost splicing pipe 21 and the nozzle pipe 219 are bent at ninety degrees, they can perform rotational spraying, thereby performing rotational cleaning of the side of the exterior wall. When the slide plate 43 retracts into the moving notch 42 of the support frame 41, the second electric push rod 213 separates the insertion block 218 from the connecting shaft 216, and the first electric push rod 217 drives the insertion block 218 to rotate. Rod 212 moves the insert block 218 and the second electric push rod 213 away from the support frame 41 to avoid interference from the support frame 41. Through the wiping sleeve 22 on the outside of the splicing pipe 21, in conjunction with the rotation of the axial turntable 24, the front of the exterior wall can be wiped and cleaned. The two ends of the insert rod 29 are limited by the first stop plate 223 and the second stop plate 224, preventing it from falling out of the slot of the connecting shaft 216 and the groove of the axial turntable 24. Simply put, when the insert rod 29 is squeezed by the insertion block 218, the second stop plate 224 slides along the inside of the slot, pushing the insert rod 29 out. The rack meshes with the first gear 28 until the second stop plate 224 enters the groove of the axial turntable 24, engaging with the connecting shaft 216. Shaft 216 is completely separated. When the subsequent connecting shaft 216 rotates, causing the second gear 211 to mesh with the gear ring 215, the rotating shaft 25, the first gear 28, and the insert rod 29 rotate with the axial turntable 24. The ejected insert rod 29 is blocked by the retaining ring 225 during rotation, thus preventing the insert rod 29 from popping out. At the end of cleaning, the insert rod 29 returns to its original position, at which point the insert rod 29 corresponds to the connecting shaft 216. After the insert block 218 is removed, the second spring 210 causes the second baffle plate 224 to return to the slot of the connecting shaft 216. First, it should be clarified here that the axial turntable 24 is composed of the intermediate gear ring 215, two discs, and the retaining ring 225. Figure 10As shown, one of the discs is fixed to the first threaded tube 23, and the retaining ring 225 is also fixed to this disc and slides in contact with the other disc. The disc on the other side can rotate together with the gear ring 215 and the rotating shaft 25. The insertion rod 29 is also slidably inserted into this disc. When the connecting shaft 216 and the insertion rod 29 are in the same position, the insertion rod 29 can be inserted into the slot of the connecting shaft 216. When the insertion rod 29 is pushed out, the second baffle plate 224 enters the groove of the axial rotating disk 24 (i.e., near the rotating shaft 25). When the rod 29 is inside the disc on one side of the gear ring 215, it can rotate together with the gear ring 215. During the rotation, in order to prevent the rod 29 from going out, the second baffle 224 of the rod 29 is blocked and limited by the retaining ring 225 to maintain the rotation state of the rotating shaft 25. When the rod 29 rotates with the axis of the axial turntable 24, it can rotate together with the rotating shaft 25 and the first gear 28. Here, the retaining ring 225 has a notch at the position of the second gear 211, and the other part is sleeved on the outer periphery of the gear ring 215.

[0051] like Figure 12 As shown, in some embodiments, an electric sprayer 221 is fixed to the top of the nozzle pipe 219, and a rangefinder 222 is fixedly installed on the top of the electric sprayer 221.

[0052] It should be noted that the electric sprayer 221 can be understood as a spraying device that can automatically spray cleaning liquid in the prior art. The spraying direction is consistent with the outlet end of the nozzle pipe 219. The distance between the outlet pipe and the outer wall can be measured by the rangefinder 222, and the number of splicing pipes 21 to be added can be determined.

[0053] Working principle:

[0054] When using the device, the drone body 1 is manually controlled to fly to the required cleaning height. Based on the distance between the drone and the outer wall, the splicing pipe 21 is sent out from inside the storage frame 12 via the lifting component 5 and falls into the support frame 41 of the support component 4. When it is necessary to release the splicing pipe 21 from the storage frame 12, the sixth electric push rod 52 pushes the base plate 53 to move, and the insert 55 penetrates into the support frame 41 to push the pallet 56 upward. As the base plate 53 moves, the connecting plate 54 rotates and pushes the baffle 51 along the outlet end of the storage frame 12 to both sides, opening the outlet end of the storage frame 12. The splicing pipe 21 inside the storage frame 12 is sent out from the outlet end of the storage frame 12 under the pressure of the top pressing plate 14 and falls between the two pallets 56. The base plate 53 and the insert 55 move downward. When the splicing pipe 21 is placed back into the carrying frame 41, the baffle 51 will also re-seal the outlet end of the storage frame 12 to prevent the remaining splicing pipe 21 from falling out. Similarly, the spliced ​​splicing pipe 21 can be disassembled and sent back into the storage frame 12 in the same way. Before receiving the splicing pipe 21, the vertical plate 46 and horizontal plate 47 are moved outward by the bidirectional electric push rod 45, and the side plate 48 is retracted into the inside of the slide plate 43 to facilitate the splicing pipe 21 falling into the carrying frame 41. The side plate 48 is pressed into contact with both ends of the wiping sleeve 22 by the bidirectional electric push rod 45. The drive screw inside the moving groove 49 drives the screw block 44 to slide along the moving groove 49, pushing the splicing pipe 21 and the nozzle pipe 219 outward and pushing them out of the carrying frame 41. To prevent the nozzle pipe 219 and splice pipe 21 from falling off, the internal area of ​​the support frame 41 is cleared to facilitate the placement of the new splice pipe 21. The toothed plate 36 allows the screw ring 27 to rotate in both directions. For example, when installing the new splice pipe 21, the first threaded pipe 23 of the original splice pipe 21 is first separated from the screw ring 27 on the connecting pipe 17. After the splice pipe 21 and nozzle pipe 219 are pushed outward, the new splice pipe 21 is placed down from the storage frame 12. At this time, the crossbar 34 is moved toward the support frame 41 by the fourth electric push rod 33. The toothed plate 36 is inserted through the moving notch 42. Because the slide plate 43 moves outward along the moving notch 42 at this time, when the toothed plate 36 is just inserted into the support frame 41, the toothed plate 36 is located at the top of the toothed ring of the screw ring 27 and is not in contact with the screw ring 27. Regarding the toothed ring contact at point 7, it's important to note that the insertion distance of the toothed plate 36 determines the meshing direction with the toothed ring 27. For example, if the insertion distance of the toothed plate 36 is relatively long, the fifth electric actuator 35 lowers the toothed plate 36 to engage with the toothed ring 27. Subsequently, the fourth electric actuator 33 pulls the toothed plate 36 back outward, causing it to mesh with the toothed ring 27 and rotate clockwise. Conversely, if the insertion distance of the toothed plate 36 is relatively short, the fifth and fourth electric actuators 35, combined with the advancement of the toothed plate 36, cause the toothed ring 27 and the toothed ring to rotate counterclockwise. These two methods allow for both forward and reverse rotation of the toothed ring 27, enabling the movable threaded connection of the toothed ring 27 between the first threaded tube 23, the second threaded tube 26, and the threaded layer 220.The splicing and locking between multiple sections of the splicing pipe 21 is achieved, including locking the nozzle pipe 219 and connecting pipe 17 to the splicing pipe 21. Reversing the screw ring 27 allows it to separate from the first threaded pipe 23 and threaded layer 220, thus separating the splicing pipe 21 for re-addition. The electric sprayer 221 can be understood as a conventional automatic spraying device for cleaning fluid, with the spray direction aligned with the outlet end of the nozzle pipe 219. The distance between the outlet pipe and the external wall can be measured using the rangefinder 222, determining the location for adding the splicing pipe. The number of connecting pipes 21, the other end of the suction pump 15 is connected to the delivery pipe 16, the bottom of the delivery pipe 16 is connected to the water source, the suction pump 15 draws water from the water source and sprays it from the connecting pipe 17, the splicing pipe 21 and the nozzle pipe 219. The slide plate 43 moves outward with the drive screw inside the moving groove 49, pushing the splicing pipe 21 connected to the nozzle pipe 219 outward. The front end of the slide plate 43 is raised and lowered by the first electric push rod 212 and pushed by the second electric push rod 213, so that the insert block 218 is inserted into the slot of the connecting shaft 216 and squeezes the insert rod 29. The pressure causes the insert rod 29 to be pushed out from the rear end of the connecting shaft 216. The rack on the side of the insert rod 29 meshes with the first gear 28, causing the rotating shaft 25 to rotate. This causes the splicing pipe 21 to rotate 90 degrees along the rotating shaft 25, changing the direction of the nozzle pipe 219. At this time, the drive motor 217 drives the insert block 218 to rotate. Because the insert block 218 is engaged with the connecting shaft 216, the second gear 211 meshes with the gear ring 215, causing the rotating shaft 25 and the connecting shaft 216 to rotate axially along the center of the turntable 24 with the gear ring 215. At the foremost end, the splicing pipe 21 and the nozzle pipe 219 rotate. After the nozzle 219 is bent at a 90-degree angle, it can rotate and spray, thus cleaning the side of the exterior wall in a rotating manner. When the slide plate 43 retracts into the moving notch 42 of the support frame 41, the second electric push rod 213 separates the insert 218 from the connecting shaft 216, and the first electric push rod 212 moves the insert 218 and the second electric push rod 213 away from the support frame 41 to avoid interference from the support frame 41. Through the wiping sleeve 22 on the outside of the splicing pipe 21, in conjunction with the rotation of the axial turntable 24, the front of the exterior wall can be wiped and cleaned.

[0055] In the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0056] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A retractable water spray arm assembly for cleaning the outer wall of a drone, characterized in that, include: The drone body (1) has landing gear (11) fixed on both sides of its bottom. A storage frame (12) is fixed at the bottom middle of the drone body (1). A load-bearing component (4) is installed at the bottom outlet of the storage frame (12). A pipe assembly (2) is placed inside the load-bearing component (4). A propulsion component (3) is provided on the landing gear (11) on one side of the bottom of the drone body (1). A suction pump (15) is fixed at the tail end of the drone body (1). A connecting pipe (17) is fixed inside the suction pump (15). A lifting component (5) is provided at the bottom of the load-bearing component (4). The supporting component (4) includes a supporting frame (41), which is fixed to the bottom of the storage frame (12). Slide plates (43) are slidably inserted into the top two sides of the supporting frame (41). A moving groove (49) is provided in the middle of the bottom of the supporting frame (41), and a drive screw is installed inside the moving groove (49). A screw block (44) is slidably installed inside the moving groove (49), and the screw block (44) is threaded onto the surface of the drive screw. The two sides of the screw block (44) are fixedly connected to the slide plate (43). The pipe assembly (2) includes a splicing pipe (21), which is provided with multiple sets stored inside the storage box (12). A second threaded pipe (26) is fixed to the front end of the splicing pipe (21) facing the drone body (1). A nozzle pipe (219) is installed at the outer end of the second threaded pipe (26). A first threaded pipe (23) is installed at the other end of the splicing pipe (21). The propulsion assembly (3) includes a moving frame (32) that slides along the inner side of the landing gear (11). A crossbeam (34) is provided on the side of the moving frame (32) facing the bearing frame (41). The crossbeam (34) is provided with toothed plates (36) at the front and rear ends of the splicing pipe (21) placed inside the bearing frame (41).

2. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 1, characterized in that, The lifting assembly (5) also includes: The base plate (53), the insert post (55), and the support plate (56) are provided. The base plate (53) is located at the bottom of the rear end of the support frame (41). The support frame (41) is located on both sides of the moving groove (49) and the bottom of the support frame (41) is connected to the support plate (56). The top of the base plate (53) is fixed with the insert post (55) corresponding to the position of the support plate (56). The top of the insert post (55) is slidably inserted into the support frame (41) and fixedly connected to the support plate (56). The suction pump (15) is fixed with a sixth electric push rod (52) on both sides, and the extended end of the sixth electric push rod (52) is fixedly connected to the base plate (53).

3. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 2, characterized in that, The storage frame (12) has baffles (51) slidably inserted on both sides of the outlet end, and a pressing plate (14) is slidably installed on the top of the storage frame (12). The bottom plate (53) has connecting plates (54) rotatably installed on both sides, and the top of the connecting plate (54) is rotatably connected to the outside of the baffle (51) through a rotating shaft (25). The storage frame (12) has a first spring (13) fixed at equal intervals on the top inner wall, and the bottom of the first spring (13) is fixedly connected to the extrusion plate (14). The baffle (51) has a third spring (57) fixed at equal intervals on the top, and the other end of the third spring (57) is fixedly connected to the outer wall (12) of the storage frame.

4. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 1, characterized in that, The carrier component (4) further includes: The screw block (44) is equipped with a bidirectional electric push rod (45), a vertical plate (46), a horizontal plate (47), and a side plate (48). The bottom of the screw block (44) is fixed with a bidirectional electric push rod (45), and the two extended ends of the bidirectional electric push rod (45) are fixed with a vertical plate (46). A horizontal plate (47) is provided on the outside of the vertical plate (46). The two ends of the horizontal plate (47) are fixed with side plates (48). The side plates (48) slide through the horizontal plate (47). The top of the vertical plate (46) is fixedly connected to the horizontal plate (47). The support frame (41) has movable notches (42) on both sides corresponding to the positions of the slide plate (43), and the slide plate (43) moves along the movable notches (42).

5. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 4, characterized in that, The pipe assembly (2) also includes: Axial turntable (24), rotating shaft (25), and threaded ring (27) are provided. The first threaded pipe (23) is rotatably mounted on one end facing the splicing pipe (21), and the axial turntable (24) is mounted on the side facing the splicing pipe (21). The splicing pipe (21) is rotatably connected to the axial turntable (24) through the rotating shaft (25). The end of the connecting pipe (17) facing the first threaded pipe (23) and the end of the nozzle pipe (219) facing the second threaded pipe (26) are both provided with threaded layers (220). Threaded rings (27) are threaded onto the outer surface of the threaded layers (220) of the second threaded pipe (26) and the connecting pipe (17). The outer ring of the splicing pipe (21) is fitted with a wiping sleeve (22), and the side plates (48) at both ends of the horizontal plate (47) are in contact with the front and rear ends of the wiping sleeve (22).

6. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 5, characterized in that, The propulsion component (3) also includes: The third electric push rod (31), the fourth electric push rod (33), and the fifth electric push rod (35) are fixed on the inner side of the landing gear (11) at the position corresponding to the moving frame (32), and the extended end of the third electric push rod (31) is fixedly connected to the moving frame (32). The two ends of the moving frame (32) are fixed with the fourth electric push rod (33), and the extended end of the fourth electric push rod (33) is fixedly connected to the cross frame (34). The top of both ends of the cross frame (34) is fixed with the fifth electric push rod (35), and the extended end of the fifth electric push rod (35) is fixedly connected to the toothed plate (36). Among them, the outer ring of the threaded ring (27) at the front and rear ends of the splicing pipe (21) is fitted with a toothed ring, and the toothed plate (36) passes through the moving notch (42) and meshes with the toothed ring of the threaded ring (27).

7. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 6, characterized in that, A gear ring (215) is rotatably mounted on the side of the axial turntable (24). A retaining ring (225) is provided on the outer ring of the gear ring (215). The retaining ring (225) is fixed on the side of the axial turntable (24) near the rotating shaft (25). A second gear (211) is meshed on one side of the gear ring (215). A connecting shaft (216) is fixed at the center of the second gear (211). Both ends of the connecting shaft (216) rotate out of the axial turntable (24). A slot is provided at the center of the connecting shaft (216). The axial turntable (24) has the same slot at the corresponding slot position. A plug rod (29) is slidably inserted into the slot of the connecting shaft (216). A second baffle plate (224) is fixed at one end of the plug rod (29). The second baffle plate (224) slides along the inside of the slot. A first baffle plate (223) is fixed at the other end of the plug rod (29). Among them, the first baffle (223) and the axial turntable (24) are fixed with a second spring (210) on the side near the rotating shaft (25), and the slot inside the connecting shaft (216) is larger than the diameter of the plug (29).

8. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 7, characterized in that, The bottom of the rotating shaft (25) is fixed with a first gear (28), and the side of the insert rod (29) facing the first gear (28) is fixed with a rack, and the first gear (28) is meshed with the rack. The second spring (210) is located on the other side of the insert rod (29) with the rack. The axial turntable (24) is provided with a connecting frame (214) on the side away from the rotating shaft (25), and the connecting frame (214) is fixed with a drive motor (217) at the position corresponding to the connecting shaft (216). The output end of the drive motor (217) is fixed with a plug (218), which is slidably engaged in the slot of the connecting shaft (216).

9. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 8, characterized in that, A first electric push rod (212) is fixed on the outer side of the slide plate (43) near the connecting frame (214), and a second electric push rod (213) is fixed to the extended end of the first electric push rod (212). The extended end of the second electric push rod (213) is fixedly connected to the connecting frame (214).

10. The retractable water spray arm assembly for cleaning the outer wall of a drone according to claim 9, characterized in that: An electric sprayer (221) is fixed to the top of the nozzle pipe (219), and a rangefinder (222) is fixedly installed on the top of the electric sprayer (221).

Images