Photovoltaic cleaning unmanned aerial vehicle capable of avoiding entanglement of external water supply pipe

Abstract

The utility model belongs to the technical field of photovoltaic cleaning, and particularly relates to a photovoltaic cleaning unmanned aerial vehicle capable of avoiding entanglement of an external water supply pipe. The photovoltaic cleaning unmanned aerial vehicle capable of avoiding entanglement of the external water supply pipe comprises an unmanned aerial vehicle body; the spraying assembly comprises a fixed hanging frame and a spraying assembly body; the fixed hanging frame is fixed to the bottom of the unmanned aerial vehicle body. The spraying assembly is rotatably mounted at the lower end of the fixed hanging frame; the water supply assembly is connected with the spraying assembly and comprises an external water pipe used for supplying water to the spraying assembly. Due to the fact that the spraying assembly and the fixed hanging frame are rotationally installed, when the position and the posture of the cleaning unmanned aerial vehicle are adjusted, the external water pipe cannot rotate along with the cleaning unmanned aerial vehicle, the cleaning unmanned aerial vehicle can rotate by 360 degrees without worrying about whether the external water pipe is wound or not, and the cleaning operation quality is guaranteed while the action flexibility of the cleaning unmanned aerial vehicle is improved; and potential safety hazards are effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic cleaning technology, specifically relating to a photovoltaic cleaning drone that avoids entanglement with external water supply pipes. Background Technology

[0002] As a green and clean energy source, photovoltaic power generation is playing an increasingly important role in the energy structure. Photovoltaic modules are used outdoors, and dust, dirt, and other impurities accumulate on their surfaces. If they are not cleaned in time, they will reduce solar radiation and lower the power generation efficiency of the photovoltaic modules. Therefore, cleaning photovoltaic modules regularly is a very important task.

[0003] Existing manual cleaning methods are inefficient and pose safety hazards. Currently, specialized drones have emerged for cleaning photovoltaic modules. These drones use spray nozzles to clean the modules by rinsing their surfaces. There are two main methods for water supply in drone cleaning systems: one is to use a water tank on the drone, but this increases the drone's size and reduces its flight time; the other is to connect an external water supply pipe to the system, relying on a ground-based water supply system. While this method doesn't increase the drone's weight or reduce its range, the current external water supply pipe structure can cause entanglement during attitude and altitude adjustments, leading to unstable water supply, abnormal drone attitude, and other issues that affect cleaning effectiveness and, in severe cases, potential safety accidents. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic cleaning drone that avoids the entanglement of external water supply pipes, thereby solving the technical problem that the existing method of using external water supply pipes to supply water for cleaning through a ground water supply system is prone to causing the external water supply pipes to become entangled.

[0005] This application provides a photovoltaic cleaning drone that avoids entanglement with external water supply pipes, including:

[0006] The drone itself;

[0007] A spraying assembly includes a mounting bracket and a spraying component; the mounting bracket is fixed to the bottom of the UAV body; the spraying component is rotatably mounted on the lower end of the mounting bracket; and

[0008] A water supply assembly, connected to a spray assembly, includes an external water pipe for supplying water to the spray assembly.

[0009] In one embodiment of this application, the spray assembly includes:

[0010] A rotating drum, the upper end of which is rotatably mounted on the lower end of a fixed bracket;

[0011] A cleaning agent supply device is installed at the top of the rotating drum;

[0012] The stirring chamber is located at the lower end of the rotating drum;

[0013] Several nozzles are located at the lower end of the mixing chamber; and

[0014] The tee has an upper and lower pipe that connect to the cleaning agent supply device and the mixing chamber, respectively, and a side pipe that connects to the water supply assembly.

[0015] In one embodiment of this application, an inwardly extending fixing ring is provided at the lower end of the inner wall of the fixed bracket;

[0016] A rolling bearing is installed at the top of the fixed ring;

[0017] The top outer wall of the rotating drum is provided with an outwardly extending positioning ring;

[0018] The positioning ring is mounted above the rolling bearing.

[0019] In one embodiment of this application, the cleaning agent supply device includes:

[0020] A storage cylinder is fixed to the top of the rotating drum, and its lower end is connected to a cleaning agent delivery pipe;

[0021] Electromagnetic throttle valve, connecting the cleaning agent delivery pipe and the upper pipe of the tee;

[0022] The second electric actuator is installed at the top of the storage cylinder, and its piston rod is connected to a piston at one end that extends into the storage cylinder.

[0023] In one embodiment of this application, a waterproof motor is installed at the bottom of the stirring chamber;

[0024] An impeller is provided at the end of the waterproof motor shaft that extends into the mixing chamber.

[0025] In one embodiment of this application, the spray assembly further includes a bottom cover threadedly connected to the bottom of the rotating drum;

[0026] The bottom cover has a through hole in the middle for the nozzle to pass through.

[0027] In one embodiment of this application, a support recess is provided at the upper end of the inner wall of the through hole;

[0028] The diameter of the support recess is the same as the diameter of the outer wall of the stirring chamber;

[0029] When the bottom cover is installed at the bottom of the rotating drum, the stirring chamber is inserted into the support recess.

[0030] In one embodiment of this application, the water supply assembly includes: a connecting pipe, a turbine flow meter, and an external water pipe connected in sequence;

[0031] The connecting pipe is fixed to the outer wall of the rotating drum and is connected to the side pipe of the tee;

[0032] The external water pipe is used to connect to the water source.

[0033] In one embodiment of this application, a bottom shell is installed on the lower part of the drone body;

[0034] Landing gears are rotatably mounted on both sides of the bottom shell.

[0035] In one embodiment of this application, the bottom shell is provided with a drive mechanism that drives the landing gear to tilt up and down.

[0036] The beneficial effects of this utility model are:

[0037] Unlike existing technologies, this application provides a photovoltaic cleaning drone that avoids entanglement with external water supply pipes. The drone includes: a drone body; a spraying assembly comprising a fixed bracket and a spraying component; the fixed bracket is fixed to the bottom of the drone body; the spraying component is rotatably mounted on the lower end of the fixed bracket; and a water supply assembly connected to the spraying component, comprising an external water pipe for supplying water to the spraying component. Because the spraying component is rotatably mounted to the fixed bracket, the external water pipe will not rotate with the cleaning drone when its position or attitude is adjusted. The cleaning drone can rotate 360° without worrying about the external water pipe becoming entangled, increasing the drone's maneuverability while ensuring the quality of the cleaning operation and effectively avoiding safety hazards.

[0038] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0039] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1This is a schematic diagram of the structure of the photovoltaic cleaning drone of this utility model, which avoids entanglement with external water supply pipes.

[0042] Figure 2 This is a schematic diagram of the internal structure of the bottom shell of the photovoltaic cleaning drone of this utility model, which avoids entanglement with external water supply pipes.

[0043] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0044] Figure 4 This is a schematic diagram of the photovoltaic cleaning drone of this utility model, which avoids entanglement with external water supply pipes, from another angle.

[0045] Figure 5 This is a cross-sectional view of the spraying device of the photovoltaic cleaning drone of this utility model, which avoids entanglement with external water supply pipes.

[0046] Figure 6 This is a schematic diagram of the bottom cover structure of the photovoltaic cleaning drone of this utility model, which avoids entanglement with external water supply pipes.

[0047] The meanings of the labels in the diagram are as follows:

[0048] 100 is the drone body, 110 is the bottom shell, 111 is the mounting protrusion, 112 is the swing groove, 113 is the lower support block, 114 is the upper support block, 120 is the first electric push rod, 130 is the rack, 140 is the sector gear, 150 is the rotating roller, and 160 is the landing gear.

[0049] 200 is a spraying device, 210 is a fixed bracket, 211 is a rolling bearing, 212 is a fixing ring, 220 is a spray assembly, 221 is a rotating drum, 2211 is a positioning ring, 222 is a tee, 223 is a mixing chamber, 224 is an impeller, 225 is a waterproof motor, 226 is a first sealing ring, 227 is a nozzle, 228 is a bottom cover, 2281 is a through hole, 2282 is a support recess, 23 is a cleaning agent supply device, 231 is a storage cylinder, 2311 is a stepped ring, 232 is a cylinder cover, 2321 is a bracket, 2322 is a second electric push rod, 2323 is a piston rod, 2324 is a piston, 2325 is a second sealing ring, 234 is a third sealing ring, 235 is a cleaning agent transmission pipe, 236 is an electromagnetic throttle valve, and 237 is a pipe connector;

[0050] 300 is the water supply component, 310 is the connecting pipe, 320 is the turbine flow meter, and 330 is the external water pipe. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0052] This application provides a photovoltaic cleaning drone that avoids entanglement with external water supply pipes, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0053] See Figure 1 , Figure 4 and Figure 5 In one embodiment, the photovoltaic cleaning drone that avoids entanglement with external water supply pipes includes: a drone body 100; a spraying assembly 200, which includes a fixed bracket 210 and a spraying assembly 220; the fixed bracket 210 is fixed to the bottom of the drone body 100; the spraying assembly 220 is rotatably mounted on the lower end of the fixed bracket 210; and a water supply assembly 300 connected to the spraying assembly 220, which includes an external water pipe 330 for supplying water to the spraying assembly 200.

[0054] In this embodiment, by setting the spray assembly 220 to be rotatably mounted with the fixed bracket 210, when the cleaning drone adjusts its position and attitude, the external water pipe 330 will not rotate with the cleaning drone. The cleaning drone can rotate 360° without worrying about the external water pipe 330 getting tangled. This increases the flexibility of the cleaning drone's movements while ensuring the quality of the cleaning operation and effectively avoids the occurrence of safety hazards.

[0055] See Figure 5 Optionally, the spray assembly 220 includes: a rotating drum 221, the upper end of which is rotatably mounted on the lower end of a fixed bracket 210; a cleaning agent supply device 230, mounted on the upper end of the rotating drum 221; a stirring chamber 223, located at the lower end of the rotating drum 221; a plurality of spray nozzles 227, disposed at the lower end of the stirring chamber 223; and a three-way connector 222, the upper and lower pipes of which are respectively connected to the cleaning agent supply device 230 and the stirring chamber 223, and the side pipe is used to connect to the water supply assembly 300.

[0056] Optionally, the side pipe of the tee 222 can be welded to the inner wall of the rotating drum 221, and an opening is made at the contact point between the rotating drum 221 and the tee 222 so that the side pipe of the tee 222 can be connected to the external pipeline.

[0057] In this embodiment, the cleaning agent supplied by the cleaning agent supply device 230 and the water supplied by the water supply component 300 can be mixed in the mixing chamber 223 and then sprayed out from the nozzle 227 to clean the photovoltaic panel.

[0058] Optionally, the lower end of the inner wall of the fixed bracket 210 is provided with an inwardly extending fixing ring 212; a rolling bearing 211 is installed on the top of the fixing ring 212; an outwardly extending positioning ring 2211 is provided on the top outer wall of the rotating cylinder 221; the positioning ring 2211 is hung above the rolling bearing 211.

[0059] Specifically, the fixed bracket 210 can be a hollow cylindrical structure, with its top detachably connected to the UAV body 100 via bolts. A retaining ring 212 is machined onto the lower end of the inner wall of the fixed bracket 210, and a rolling bearing 211 is mounted on top of the retaining ring 212. The outer ring of the rolling bearing 211 is interference-fitted with the inner wall of the fixed bracket 210. The rolling bearing 211 is an angular contact ball bearing, capable of simultaneously withstanding radial and axial forces. The rotating drum 221 can also be a hollow cylindrical structure with a positioning ring 2211 machined on the top outer wall. The outer diameter of the positioning ring 2211 is slightly larger than the inner ring of the rolling bearing 211. The outer diameter of the rotating drum 221 corresponds to the inner ring of the rolling bearing 211. After the spray assembly 220 is inserted into the fixed bracket 210, the inner ring of the rolling bearing 211 contacts the positioning ring 2211, achieving the effect of supporting the rotating drum 221 through the rolling bearing 211. The outer wall of the rotating drum 221 and the inner ring of the rolling bearing 211 are interference fit. When the rotating drum 221 rotates or swings, the inner ring of the rolling bearing 211 moves together with the rotating drum 221, while the fixed bracket 210 and the outer ring of the rolling bearing 211 remain relatively stationary with respect to the UAV body 100.

[0060] Optionally, the cleaning agent supply device 230 includes: a storage cylinder 231, fixed to the top of the rotating cylinder 221, with its lower end connected to a cleaning agent transmission pipe 235; an electromagnetic throttle valve 236, connected to the upper pipe of the cleaning agent transmission pipe 235 and the tee 222; and a second electric push rod 2321, installed at the upper end of the storage cylinder 231, with one end of its piston rod 2323 extending into the storage cylinder 231 connected to a piston 2324.

[0061] Specifically, the storage cylinder 231 can be a hollow structure for storing cleaning agent. A stepped ring 2311 is machined on the bottom of its outer wall. The outer diameter of the stepped ring 2311 is the same as the inner diameter of the rotating cylinder 221, ensuring that the lower part of the storage cylinder 231 is inserted into the upper part of the rotating cylinder 221. A cylinder cover 232 fits on the top of the storage cylinder 231. A bracket 2321 is fixed to the top of the cylinder cover 232. A second electric push rod 2321 is installed on the side of the bracket 2321. A piston rod 2323 is connected to the lower end of the second electric push rod 2321. After the piston rod 2323 passes through the center of the cylinder cover 232, a piston 2324 is welded to its lower end. The diameter of the piston 2324 is slightly smaller than the inner diameter of the storage cylinder 231, and a second sealing ring 2325 is fitted around its edge to fill the gap between the piston 2324 and the storage cylinder 231, ensuring that they are properly sealed. The sealing between the piston 2324 and the storage cylinder 231 is provided by the pressure of the piston 2324. A third sealing ring 234 is provided between the cylinder cover 232 and the storage cylinder 231. The bottom of the storage cylinder 231 is connected to the cleaning agent transmission pipe 235. The lower end of the cleaning agent transmission pipe 235 is connected to the electromagnetic throttle valve 236. The lower end of the electromagnetic throttle valve 236 is connected to the pipe connector 237. The pipe connector 237 is threaded to the upper part of the tee 222. During installation, first insert the rotating cylinder 221 into the fixed bracket 210, then insert the cleaning agent supply device 230 into the top of the inner wall of the rotating cylinder 221, and tighten the pipe connector 237 to the upper part of the tee 222. Then screw the bottom cover 228 onto the bottom of the rotating cylinder 221. Finally, install the fixed bracket 210 onto the bottom of the UAV body 100 with bolts.

[0062] Optionally, a waterproof motor 225 is installed at the bottom of the stirring chamber 223; an impeller 224 is provided at the end of the rotating shaft of the waterproof motor 225 that extends into the stirring chamber 223.

[0063] Specifically, the bottom of the mixing chamber 223 can be slightly lower than the bottom of the rotating drum 221. A waterproof motor 225 is installed at the center of the bottom of the mixing chamber 223. The shaft of the waterproof motor 225 passes through the bottom of the mixing chamber 223, and a first sealing ring 226 is provided between the shaft of the waterproof motor 225 and the bottom of the mixing chamber 223 to prevent liquid from seeping out from the gap between them. An impeller 224 is fixed to the end of the shaft of the waterproof motor 225. After the impeller 224 rotates, it can fully mix the cleaning agent and water entering the mixing chamber 223, ensuring the quality of the cleaning fluid sprayed by the cleaning drone. The number of nozzles 227 installed at the bottom of the mixing chamber 223 can be three, and they are distributed in an equilateral triangle around the waterproof motor 225.

[0064] See Figure 6 Furthermore, the spray assembly 220 also includes a bottom cover 228 threadedly connected to the bottom of the rotating drum 221; the bottom cover 228 has a through hole 2281 in the middle for the nozzle 227 to pass through.

[0065] Optionally, a support recess 2282 is provided at the upper end of the inner wall of the through hole 2281; the diameter of the support recess 2282 is the same as the outer wall diameter of the stirring chamber 223; when the bottom cover 228 is installed at the bottom of the rotating drum 221, the stirring chamber 223 is inserted into the support recess 2282. This can support and fix the stirring chamber 223 during operation, preventing the stirring chamber 223 from shaking after the impeller 224 rotates.

[0066] See Figure 1 Optionally, the water supply assembly 300 includes: a connecting pipe 310, a turbine flow meter 320, and an external water pipe 330 connected in sequence; the connecting pipe 310 is fixed to the outer wall of the rotating drum 221 and communicates with the side pipe of the tee 222; the external water pipe 330 is used to connect to a water source.

[0067] In one application scenario, the turbine flow meter 320, the second electric push rod 2321, and the electromagnetic throttle valve 236 can be linked. Specifically, when the surface stains of the photovoltaic module are easy to clean, the water pressure and flow rate of the external water supply device are low. The turbine flow meter 320 sends the monitored water flow rate data to the control system. The control system transmits a command to reduce the extension speed of the second electric push rod 2321 and simultaneously reduce the flow area of ​​the electromagnetic throttle valve 236 to reduce the amount of cleaning agent supplied in the storage tank 231. When the surface stains of the photovoltaic module are difficult to clean, the water pressure and flow rate of the external water supply device increase. The turbine flow meter 320 sends the increased water flow rate data to the control system, causing the second electric push rod 2321 to descend faster and expand the flow area of ​​the electromagnetic throttle valve 236, increasing the amount of cleaning agent supplied in the storage tank 231. This ensures that the cleaning agent and water supply are always in a set ratio to guarantee cleaning efficiency. To adapt to photovoltaic module cleaning operations in different environments, the ratio of cleaning agent to water supply can be manually adjusted.

[0068] Optionally, a bottom shell 110 is installed on the lower part of the drone body 100; landing gear 160 is rotatably installed on both sides of the bottom shell 110.

[0069] Furthermore, to prevent the landing gear 160 from obstructing the rotation of the water supply assembly 300, the landing gear 160 can be designed to be retractable. Optionally, the bottom shell 110 is provided with drive mechanisms for driving the landing gear 160 to tilt upwards and downwards respectively.

[0070] For details, see Figure 2 and Figure 3The lower part of the drone body 100 is equipped with a bottom shell 110. The bottom shell 110 has a hollow structure and a mounting protrusion 111 is provided in the center of its interior. Two swing grooves 112 are opened on both the left and right sides of the bottom shell 110. The swing grooves 112 extend to the bottom of the bottom shell 110 and the positions of the swing grooves 112 on the left and right sides correspond. Four supporting lower blocks 113 are symmetrically machined inside the bottom shell 110. Each supporting lower block 113 has a supporting upper block 114 that cooperates with it. The supporting lower blocks 113 and supporting upper blocks 114 are movably connected by bolts.

[0071] Furthermore, two first electric push rods 120 are symmetrically mounted on the upper part of the mounting protrusion 111. Each first electric push rod 120 has a rack 130 at its end. The rack 130 engages with a sector gear 140, which is fixed at the center of the rotating roller 150. The rotating roller 150 is supported to the left and right by the lower support block 113 and the upper support block 114. A landing gear 160 is connected to the rotating roller 150. The landing gear 160 passes through the bottom shell 110 through the swing groove 112. When the rack 130 moves back and forth, The sector gear 140 drives the roller 150 to rotate, which in turn drives the landing gear 160 to swing and adjust within the swing groove 112. Specifically, when the rack 130 extends, the landing gear 160 swings to the tilt position. At this time, both landing gears 160 are at a 20° angle to the center line of the drone, which can be used for the normal take-off and landing of the drone. When the drone is cleaning, the landing gear 160 retracts to the horizontal position when the rack 130 retracts, to prevent the external water pipe 330 from getting tangled on the landing gear 160. The swing adjustment range of the landing gear 160 is 70°.

[0072] In one application scenario, when the cleaning drone is cleaning, the landing gear 160 is retracted to a horizontal position, and the external water supply pipe is connected to the spray assembly 220 on the spraying device 200. A rolling bearing 211 is provided between the spray assembly 220 and the fixed bracket 210. Therefore, when the cleaning drone moves the fixed bracket 210, the spray assembly 220 and the external water supply pipe and cleaning agent supply device 230 connected to it can rotate and swing relative to the fixed bracket 210, effectively avoiding the problem of the external water supply pipe getting tangled. Moreover, the fixed bracket 210 and the spray assembly 220 can rotate relative to each other without restriction, realizing the 360° rotation of the cleaning drone, increasing the maneuverability of the cleaning drone, and ensuring the efficiency of the cleaning operation.

[0073] In summary, the photovoltaic cleaning drone of this invention, which avoids entanglement with external water supply pipes, has the following advantages:

[0074] 1. The spraying device uses rolling bearings to connect the fixed bracket and the spraying components. When the cleaning drone adjusts its position and attitude, the external water supply pipe will not rotate with the cleaning drone. The cleaning drone can rotate 360° without worrying about the external water supply pipe getting tangled. This increases the flexibility of the cleaning drone's movements while ensuring the quality of the cleaning operation and effectively avoids safety hazards.

[0075] 2. The landing gear can be adjusted within a 70° swing range. When landing is required, the landing gear swings to a tilted state to facilitate the landing of the drone. When the drone is cleaning, the landing gear retracts to a horizontal state, effectively avoiding the problem of the external water supply pipe getting tangled in the landing gear when swinging, while not affecting the normal take-off and landing of the drone.

[0076] 3. Link the turbine flow meter on the water supply pipe with the electromagnetic throttle valve at the lower end of the cleaning agent transmission pipe. The supply of cleaning agent can be adjusted according to the flow rate of the water supply pipe to keep the ratio of cleaning agent to water within an appropriate range. At the same time, the ratio of cleaning agent to water can be adjusted according to the difficulty of cleaning the stains on the surface of the photovoltaic module to achieve a better cleaning effect.

[0077] It should be noted that all the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0078] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0079] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0080] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification.

Claims

1. A photovoltaic cleaning drone to avoid entanglement with external water supply pipes, characterized in that, include: Unmanned aerial vehicle (UAV) body (100); A spraying assembly (200) includes a fixed bracket (210) and a spraying component (220); the fixed bracket (210) is fixed to the bottom of the UAV body (100); the spraying component (220) is rotatably mounted on the lower end of the fixed bracket (210); and A water supply assembly (300) is connected to a spray assembly (220) and includes an external water pipe (330) for supplying water to the spray assembly (200).

2. The photovoltaic cleaning drone that avoids entanglement with external water supply pipes according to claim 1, characterized in that, The spray assembly (220) includes: A rotating drum (221) is rotatably mounted at the lower end of a fixed bracket (210); A cleaning agent supply device (230) is installed at the upper end of the rotating drum (221); The stirring chamber (223) is located at the lower end of the rotating drum (221); Several nozzles (227) are disposed at the lower end of the mixing chamber (223); and The tee (222) has an upper pipe and a lower pipe that are connected to the cleaning agent supply device (230) and the stirring chamber (223) respectively, and a side pipe is used to connect to the water supply assembly (300).

3. The photovoltaic cleaning drone that avoids entanglement with external water supply pipes according to claim 2, characterized in that, The lower end of the inner wall of the fixed bracket (210) is provided with an inwardly extending fixing ring (212); A rolling bearing (211) is mounted on the top of the fixed ring (212); The top outer wall of the rotating drum (221) is provided with an outwardly extending positioning ring (2211); The positioning ring (2211) is hung above the rolling bearing (211).

4. The photovoltaic cleaning drone that avoids entanglement with external water supply pipes according to claim 2, characterized in that, The cleaning agent supply device (230) includes: Storage cylinder (231) is fixed to the top of rotating cylinder (221), and its lower end is connected to cleaning agent transfer pipe (235); The electromagnetic throttle valve (236) is connected to the upper pipe of the cleaning agent transmission pipe (235) and the tee (222); The second electric push rod (2321) is installed at the upper end of the storage cylinder (231), and the piston rod (2323) is connected to a piston (2324) at one end that extends into the storage cylinder (231).

5. The photovoltaic cleaning drone that avoids entanglement with external water supply pipes according to claim 2, characterized in that, A waterproof motor (225) is installed at the bottom of the stirring chamber (223); An impeller (224) is provided at the end of the shaft of the waterproof motor (225) that extends into the stirring chamber (223).

6. The photovoltaic cleaning drone that avoids entanglement with external water supply pipes according to claim 2, characterized in that, The spray assembly (220) further includes a bottom cover (228) threaded to the bottom of the rotating drum (221); The bottom cover (228) has a through hole (2281) in the middle for the nozzle (227) to pass through.

7. The photovoltaic cleaning drone that avoids entanglement with external water supply pipes according to claim 6, characterized in that, A support recess (2282) is provided at the upper end of the inner wall of the through hole (2281); The diameter of the support recess (2282) is the same as the outer wall diameter of the stirring chamber (223); When the bottom cover (228) is installed at the bottom of the rotating drum (221), the stirring chamber (223) is inserted into the support recess (2282).

8. The photovoltaic cleaning drone that avoids entanglement with external water supply pipes according to claim 4, characterized in that, The water supply assembly (300) includes: a connecting pipe (310), a turbine flow meter (320), and an external water pipe (330) connected in sequence; The connecting pipe (310) is fixed to the outer wall of the rotating drum (221) and communicates with the side pipe of the tee (222); The external water pipe (330) is used to connect to a water source.

9. The photovoltaic cleaning drone according to claim 8, which avoids entanglement with external water supply pipes, is characterized in that... The lower part of the unmanned aerial vehicle body (100) is equipped with a bottom shell (110); Landing gears (160) are rotatably mounted on both sides of the bottom shell (110).

10. The photovoltaic cleaning drone according to claim 9, which avoids entanglement with external water supply pipes, is characterized in that, The bottom shell (110) is provided with drive mechanisms that drive the landing gear (160) to tilt up and fall down respectively.

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