Multifunctional unmanned aerial vehicle for photovoltaic panel cleaning and photovoltaic panel edge cleaning method

Abstract

The invention belongs to the technical field of aircrafts, and particularly relates to a multifunctional photovoltaic panel cleaning unmanned aerial vehicle and a cleaning method thereof. The invention provides a multifunctional photovoltaic panel cleaning unmanned aerial vehicle. The multifunctional photovoltaic panel cleaning unmanned aerial vehicle comprises a vehicle body; the multiple extension frames are arranged in the circumferential direction of the machine body; the spraying device is arranged at the lower end of the extension frame; the protection device is arranged on the outer wall of the spraying device in a lifting and sleeving manner and is suitable for limiting the direction of liquid sprayed by the spraying device; when a rotating disc of the spraying device rotates to spray liquid to the periphery, the protection device moves downwards to be arranged on the outer side of the rotating disc in a surrounding mode so as to limit the spraying coverage range of the rotating disc. And through the arrangement of the protection device, the sprayed liquid can be prevented from splashing to the outside of the photovoltaic panel when the spraying device moves to the edge position of the photovoltaic panel.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft, and in particular relates to a multifunctional unmanned aerial vehicle for cleaning photovoltaic panels and a method for cleaning the edges of photovoltaic panels. Background Art

[0002] With the widespread application of photovoltaic power generation, the workload of regular cleaning of the surface of photovoltaic panels has increased significantly, because the power generation efficiency is closely related to the cleanliness of the surface of photovoltaic panels, and the existing cleaning methods on the market are still mainly manual for small and medium-sized enterprises; the number of cleaning equipment used in large-scale photovoltaic stations is large, the equipment cost is high, and an outer frame is required as a guide rail for the cleaning equipment, which is not only costly, but also easily causes overheating of the edges and leads to failure of the photovoltaic panels.

[0003] In order to reduce costs, drones are often used to spray self-cleaning liquid to form a self-cleaning coating on the surface of photovoltaic panels. However, the self-cleaning liquid has certain corrosive properties, so when drones are spraying on the surface of photovoltaic panels, it is necessary to avoid the self-cleaning liquid sprayed by the drone's nozzle from splashing onto the outside of the photovoltaic panels. The nozzles in the prior art cannot adaptively adjust the direction of the liquid sprayed by the nozzle according to the flight attitude and hovering position of the aircraft.

[0004] Therefore, how to prevent the liquid sprayed by the drone from exceeding the intended spraying coverage is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a multifunctional drone for cleaning photovoltaic panels and a method for cleaning the edges of photovoltaic panels.

[0007] In a first aspect, an embodiment of the present disclosure provides a multifunctional drone for cleaning photovoltaic panels, comprising: Machine body; Extension frames, a plurality of the extension frames are arranged circumferentially around the machine body; a spraying device, which is arranged at the lower end of the extension frame; A protective device, the lifting sleeve of which is arranged on the outer wall of the spraying device and is suitable for limiting the direction of the liquid sprayed by the spraying device; Wherein, when the turntable of the spraying device rotates to spray the liquid in all directions, the protective device moves downward to surround the outside of the turntable to limit the coverage of the turntable spraying.

[0008] In an optional embodiment, a connecting rod is provided in the middle of the extension frame in the vertical direction, and a horizontal rod is provided at the lower end of the connecting rod, and the horizontal rod and the extension frame are parallel to each other; Every two of the spraying devices are respectively arranged at two ends of the horizontal rod; The machine body is provided with a liquid storage cylinder, and the liquid storage cylinder is connected with the spraying device through a pipeline.

[0009] In an optional embodiment, the spraying device includes: a fixed cylinder, which is arranged at the lower end of the horizontal rod and is connected to the liquid storage cylinder; A driving motor is disposed in the fixing cylinder, and a gap is provided between an outer wall of the driving motor and an inner wall of the fixing cylinder; A rotating disk, which is arranged at the end of the rotating shaft of the driving motor; Diffusion blocks, a plurality of diffusion blocks are arranged circumferentially around the rotating disk at equal intervals; Among them, after the liquid in the liquid storage cylinder flows to the rotating disk through the fixed cylinder, the rotating disk drives the diffusion block to rotate to spray the liquid to all sides.

[0010] In an optional embodiment, the protective device includes: a driving cylinder, which is arranged on the outer wall of the horizontal rod, A protective sleeve, which is arranged on the end of the piston rod of the driving cylinder and sleeved on the outer wall of the fixing cylinder; The inner diameter of the protective sleeve is not less than the outer diameter of the rotating disk; When the driving cylinder drives the protective sleeve to move downward, the protective sleeve is suitable for limiting the spraying direction of the liquid on the rotating disk.

[0011] In an optional embodiment, the bottom wall of the protective sleeve is inclined, and the bottom wall of the protective sleeve gradually decreases from one side to the other side; When the aircraft body flies horizontally over the photovoltaic panel, the lowest point of a protective cover is close to an outer edge of the photovoltaic panel.

[0012] In an optional embodiment, a plurality of cleaning blocks are arranged at equal intervals on the inner wall of the protective sleeve, one cleaning block corresponds to one diffusion block, and the width of the cleaning block is not greater than the interval between two adjacent diffusion blocks; wherein, when the cleaning block is inserted between the two diffusion blocks, it is suitable for cleaning impurities between the two diffusion blocks.

[0013] In an optional embodiment, the bottom wall of each cleaning block is provided with an inclined surface, the inclined surface is arc-shaped, and the inclined surface extends from one end of the cleaning block close to the protective sleeve to the other end; When the lowest point of the bottom wall of the protective sleeve is lower than the rotating disk, the inclined surface of the bottom wall of the cleaning block is suitable for guiding the liquid diffused outward through the diffusion block so that the liquid is sprayed toward the outer wall of the fixed cylinder.

[0014] In an optional embodiment, a guide surface is respectively provided on both sides of the bottom wall of each cleaning block, and the guide surface is suitable for abutting against the sharp corner of the upper edge of the diffusion block; When the protective sleeve moves downward until the guide surface abuts against the diffusion block, the guide surface is suitable for pushing the turntable to rotate so that the cleaning block is inserted between the two diffusion blocks.

[0015] In an optional embodiment, Spraying device; A protective device, the lifting sleeve of which is arranged on the outer wall of the spraying device; When the rotating disk of the spraying device rotates to spray the liquid in all directions, the protective device moves downward to surround the outer side of the rotating disk to limit the coverage of the rotating disk spraying.

[0016] In an optional embodiment, the bottom wall of the protective sleeve is inclined, and the bottom wall of the protective sleeve gradually decreases from one side to the other side; When the aircraft body flies horizontally over the photovoltaic panel, the lowest point of a protective cover is close to an outer edge of the photovoltaic panel.

[0017] In an optional embodiment, a plurality of cleaning blocks are arranged at equal intervals on the inner wall of the protective sleeve, one cleaning block corresponds to one diffusion block, and the width of the cleaning block is not greater than the interval between two adjacent diffusion blocks; The bottom wall of each cleaning block is provided with an inclined surface, the inclined surface is in an arc shape, and the inclined surface extends from one end of the cleaning block close to the protective sleeve to the other end; When the lowest point of the bottom wall of the protective sleeve is lower than the rotating disk, the inclined surface of the bottom wall of the cleaning block is suitable for guiding the liquid diffused outward through the diffusion block so that the liquid is sprayed toward the outer wall of the fixed cylinder.

[0018] In a second aspect, the embodiments of the present disclosure further provide a photovoltaic panel edge cleaning method, comprising: The machine body flies horizontally over the photovoltaic panel, and the turntable of the spraying device rotates to spray the liquid evenly onto the surface of the photovoltaic panel; The machine body moves to a position close to the edge of the photovoltaic panel, and the corresponding protective device moves downward to limit the direction of the liquid sprayed by the spraying device.

[0019] The beneficial effect of the present invention is that a multifunctional photovoltaic panel cleaning drone and a cleaning method thereof of the present invention, through the setting of a protective device, when the machine body moves to a position close to the outer edge of the photovoltaic panel, the corresponding protective device moves downward to limit the direction of the liquid sprayed by the spraying device, and the protective sleeve limits the sprayed liquid to prevent the liquid from splashing to the outside of the photovoltaic panel, thereby preventing the sprayed self-cleaning liquid from corroding and affecting the surrounding environment.

[0020] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A three-dimensional diagram of a multifunctional photovoltaic panel cleaning drone provided by an embodiment of the present disclosure; Figure 2 A perspective view of a spray device provided by an embodiment of the present disclosure; Figure 3 A three-dimensional diagram of a protective device provided by an embodiment of the present disclosure; Figure 4 A cutaway perspective view of a protective sleeve provided for an embodiment of the present disclosure; Figure 5 A schematic diagram of a state of a partial limit turntable of a protective cover provided in an embodiment of the present disclosure; Figure 6 A top view of a diffusion block provided in a transverse section along the upper surface of the diffusion block according to an embodiment of the present disclosure.

[0024] In the figure: 1. Machine body; 11. Liquid storage cylinder; 12. Propeller; 2. Extension frame; 21. Connecting rod; 22. Horizontal rod; 3. Spraying device; 31. Fixed cylinder; 32. Driving motor; 33. Turntable; 34. Diffusion block; 4. Protective device; 41. Driving cylinder; 42. Protective sleeve; 43. Cleaning block; 44. Inclined surface; 45. Guide surface. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0027] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0028] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0029] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0030] Research has found that the shortcomings of the prior art are: in order to reduce costs, drones are often used to spray self-cleaning liquid to form a self-cleaning coating on the surface of photovoltaic panels. However, the self-cleaning liquid has certain corrosive properties. Therefore, when the drone sprays the surface of the photovoltaic panel, it is necessary to prevent the self-cleaning liquid sprayed by the drone's nozzle from splashing onto the outside of the photovoltaic panel. The nozzle in the prior art cannot limit the direction of the liquid sprayed by the nozzle. When the drone moves to the edge of the photovoltaic panel, the sprayed self-cleaning liquid will cause corrosion to the surrounding environment.

[0031] Therefore, how to prevent the liquid sprayed by the drone from splashing outside the edge of the photovoltaic panel is a technical problem that urgently needs to be solved in this field.

[0032] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] like Figures 1 to 6As shown, some embodiments provide a multifunctional photovoltaic panel cleaning drone, including: a machine body 1; an extension frame 2, a plurality of the extension frames 2 are arranged circumferentially around the machine body 1; a spraying device 3, which is arranged at the lower end of the extension frame 2; the spraying device 3 is connected to a liquid storage cylinder 11, and the liquid storage cylinder 11 is suitable for conveying liquid to the spraying device 3. The liquid described in this embodiment is a self-cleaning liquid. The protective device 4, whose lifting sleeve is arranged on the outer wall of the spraying device 3, is suitable for limiting the direction of the liquid sprayed by the spraying device 3; each protective device 4 of the machine body 1, its lowest point is facing different edges of the photovoltaic panel. Therefore, when the machine body 1 moves to any edge position close to the photovoltaic panel, a corresponding protective device 4 moves downward. Among them, when the rotating disk 33 of the spraying device 3 rotates to spray the liquid around, the protective device 4 moves downward to surround the outer side of the rotating disk 33 to limit the coverage of the rotating disk 33 spraying; when the machine body 1 moves to the edge close to the photovoltaic panel, the corresponding protective device 4 moves downward to limit the direction of the liquid sprayed by the spraying device 3. Through the setting of the protective device 4, when the machine body 1 moves to the outer edge close to the photovoltaic panel, the corresponding protective device 4 moves downward to limit the direction of the liquid sprayed by the spraying device 3. The protective sleeve 42 limits the sprayed liquid to prevent the liquid from splashing to the outside of the photovoltaic panel, thereby preventing the sprayed self-cleaning liquid from corroding and affecting the surrounding environment.

[0036] Reference Figure 1 A connecting rod 21 is arranged in the middle of the extension frame 2 in the vertical direction, and a horizontal rod 22 is arranged at the lower end of the connecting rod 21, and the horizontal rod 22 is parallel to the extension frame 2; one extension frame 2 corresponds to one propeller 12, and the propeller 12 is arranged at one end of the connecting rod 21 away from the aircraft body 1, and the propeller 12 is suitable for driving the aircraft body 1 to fly. Every two of the spraying devices 3 are respectively arranged at the two ends of the horizontal rod 22; a liquid storage cylinder 11 is arranged on the aircraft body 1, and the liquid storage cylinder 11 is connected to the spraying device 3 through a pipeline. After the liquid in the liquid storage cylinder 11 flows to the spraying device 3, the rotating disk 33 rotates circumferentially to spray the liquid outward, and the arrangement of a plurality of diffusion blocks 34 can make the liquid sprayed outward appear in the form of water mist, so that the liquid can be sprayed outward evenly.

[0037] Reference Figure 2The spraying device 3 includes: a fixed cylinder 31, which is arranged at the lower end of the horizontal rod 22 and is connected to the liquid storage cylinder 11; the fixed cylinder 31 is connected to the liquid storage cylinder 11 through a pipeline, and the liquid in the liquid storage cylinder 11 is transported to the fixed cylinder 31 and flows downward through the gap between the lower end of the fixed cylinder 31 and the turntable 33; a driving motor 32, which is arranged in the fixed cylinder 31, and a gap is provided between the outer wall of the driving motor 32 and the inner wall of the fixed cylinder 31; a plurality of connecting rods 21 are radially arranged on the outer wall of the driving motor 32, and the outer ends of the connecting rods 21 are fixed to the inner wall of the fixed cylinder 31, and the connecting rods 21 are suitable for supporting and fixing the driving motor 32, and the driving motor 32 is a waterproof motor. When the liquid flows downward through the outer wall of the driving motor 32 and the inner wall of the fixed cylinder 31, the liquid can also cool the motor. The rotating disk 33 is arranged at the end of the rotating shaft of the driving motor 32; a gap is arranged between the upper edge of the rotating disk 33 and the bottom wall of the fixed cylinder 31, so that the liquid in the fixed cylinder 31 can flow downward, and preferably, the diameter of the rotating disk 33 is larger than the outer diameter of the fixed cylinder 31. The diffusion blocks 34 are arranged circumferentially around the rotating disk 33 at equal intervals; wherein, after the liquid in the liquid storage cylinder 11 flows to the rotating disk 33 through the fixed cylinder 31, the rotating disk 33 drives the diffusion blocks 34 to rotate to spray the liquid around.

[0038] Reference Figure 2 and Figure 3 The protective device 4 includes: a driving cylinder 41, which is arranged on the outer wall of the horizontal rod 22, the driving cylinder 41 and the fixed cylinder 31 are parallel to each other, and a protective sleeve 42, which is arranged at the end of the piston rod of the driving cylinder 41 and sleeved on the outer wall of the fixed cylinder 31; the driving cylinder 41 is suitable for driving the protective sleeve 42 to move up and down relative to the fixed cylinder 31, and when the lower end of the protective sleeve 42 is lower than the rotating disk 33, the protective sleeve 42 is suitable for limiting the direction of the liquid sprayed by the rotating disk 33. The inner diameter of the protective sleeve 42 is not less than the outer diameter of the rotating disk 33; wherein, when the driving cylinder 41 drives the protective sleeve 42 to move downward, the protective sleeve 42 is suitable for limiting the spraying direction of the liquid on the rotating disk 33.

[0039] Reference Figure 4 The bottom wall of the protective cover 42 is inclined, and the bottom wall of the protective cover 42 gradually decreases from one side to the other side; wherein, when the aircraft body 1 flies horizontally on the photovoltaic panel, the lowest point of a protective cover 42 is close to an outer edge of the photovoltaic panel. Figure 6When the machine body 1 moves to the outer edge of the photovoltaic panel, the driving cylinder 41 drives the protective cover 42 to move downward until the lowest point of the protective cover 42 is lower than the turntable 33. At this time, the circumferential rotation of the turntable 33 cannot spray the liquid 360 degrees around. The protective cover 42 blocks the spraying direction of part of the liquid. At this time, the spraying direction of the liquid is less than 300 degrees. This prevents the liquid sprayed on the turntable from splashing to the outer area of ​​the photovoltaic panel.

[0040] Reference Figure 4 The inner wall of the protective sleeve 42 is provided with a plurality of cleaning blocks 43 at equal intervals, one cleaning block 43 corresponds to one diffusion block 34, and the width of the cleaning block 43 is not greater than the interval between two adjacent diffusion blocks 34; wherein, when the protective sleeve 42 moves downward and one cleaning block 43 is inserted between two corresponding diffusion blocks 34, it is suitable for cleaning impurities between the two diffusion blocks 34. This avoids the two diffusion blocks 34 being blocked by impurities. Further, each cleaning block 43 is provided with an inclined surface 44 on the bottom wall, and the inclined surface 44 is in an arc shape, and the inclined surface 44 extends from one end of the cleaning block 43 close to the protective sleeve 42 to the other end; wherein, when the lowest point of the bottom wall of the protective sleeve 42 is lower than the turntable 33, at this time, the protective sleeve 42 is completely sleeved on the outside of the turntable 33, and the liquid sprayed outward when the turntable 33 rotates is blocked by the inner wall of the protective sleeve 42 and flows upward and downward respectively, and part of the liquid flows upward, and the inclined surface 44 is suitable for guiding the liquid to flow gradually from bottom to top toward the outer wall of the fixed cylinder 31; the inclined surface 44 of the bottom wall of the cleaning block 43 is suitable for guiding the liquid diffused outward through the diffusion block 34, so that the liquid is sprayed toward the outer wall of the fixed cylinder 31, so as to achieve the effect of cleaning the outer wall of the fixed cylinder 31. Further, when the protective sleeve 42 is completely sleeved on the outside of the turntable 33, the liquid in the liquid storage cylinder 11 is a detergent, which is suitable for cleaning the inner wall of the protective sleeve 42 and the residual self-cleaning liquid on the outer wall of the fixed cylinder 31.

[0041] Reference Figure 4 A guide surface 45 is provided on both sides of the bottom wall of each cleaning block 43, and the guide surface 45 is suitable for abutting against the sharp corner of the upper edge of the diffusion block 34; wherein, when the protective sleeve 42 moves downward until the guide surface 45 abuts against the diffusion block 34, the guide surface 45 is suitable for pushing the turntable 33 to rotate so that the cleaning block 43 is inserted between the two diffusion blocks 34.

[0042] Some embodiments provide a spraying mechanism for a photovoltaic panel cleaning drone, comprising: A spraying device 3, which is arranged at the end of the horizontal rod 22; The protective device 4 is lifted and lowered on the outer wall of the spraying device 3; when the turntable 33 of the spraying device 3 rotates to spray the liquid in all directions, the protective device 4 moves downward to surround the outer side of the turntable 33 to limit the coverage of the turntable spraying.

[0043] Furthermore, the bottom wall of the protective cover 42 is inclined, and the bottom wall of the protective cover 42 gradually decreases from one side to the other side; When the aircraft body 1 flies horizontally on the photovoltaic panel, the lowest point of a protective cover 42 is close to an outer edge of the photovoltaic panel.

[0044] Furthermore, a plurality of cleaning blocks 43 are arranged at equal intervals on the inner wall of the protective sleeve 42, one cleaning block 43 corresponds to one diffusion block 34, and the width of the cleaning block 43 is not greater than the interval between two adjacent diffusion blocks 34; The bottom wall of each cleaning block 43 is provided with an inclined surface 44, the inclined surface 44 is in an arc shape, and the inclined surface 44 extends from one end of the cleaning block 43 close to the protective cover 42 to the other end; When the lowest point of the bottom wall of the protective sleeve 42 is lower than the rotating disk 33 , the inclined surface 44 of the bottom wall of the cleaning block 43 is suitable for guiding the liquid diffused outward through the diffusion block 34 so that the liquid is sprayed toward the outer wall of the fixed cylinder 31 .

[0045] Some embodiments provide a method for cleaning an edge of a photovoltaic panel, the cleaning method comprising: The machine body 1 flies horizontally over the photovoltaic panel, and the rotating disk 33 of the spraying device 3 rotates to spray the liquid evenly onto the surface of the photovoltaic panel; The machine body 1 moves to a position close to the edge of the photovoltaic panel, and the corresponding protective device 4 moves downward to limit the direction of the liquid sprayed by the spraying device 3 .

[0046] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0048] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multifunctional drone for cleaning photovoltaic panels, characterized in that: include: Machine body (1); An extension frame (2), wherein a plurality of the extension frames (2) are arranged circumferentially around the machine body (1); A spraying device (3) disposed at the lower end of the extension frame (2); A protective device (4), the lifting sleeve of which is arranged on the outer wall of the spraying device (3); When the rotating disk (33) of the spraying device (3) rotates to spray the liquid in all directions, the protective device (4) moves downward to surround the outside of the rotating disk (33) to limit the coverage of the rotating disk spraying.

2. The multifunctional UAV according to claim 1, characterized in that: A connecting rod (21) is arranged in the middle of the extension frame (2) in the vertical direction, and a horizontal rod (22) is arranged at the lower end of the connecting rod (21), and the horizontal rod (22) and the extension frame (2) are parallel to each other; Each two of the spraying devices (3) are respectively arranged at two ends of the horizontal rod (22); A liquid storage cylinder (11) is provided on the machine body (1), and the liquid storage cylinder (11) is connected to the spraying device (3) through a pipeline.

3. The multifunctional UAV according to claim 2, characterized in that: The spraying device (3) comprises: a fixed cylinder (31) which is arranged at the lower end of the horizontal rod (22) and is connected to the liquid storage cylinder (11); A driving motor (32) is disposed in the fixed cylinder (31), and a gap is provided between an outer wall of the driving motor (32) and an inner wall of the fixed cylinder (31); A rotating disk (33) arranged at the end of the rotating shaft of the driving motor (32); A diffusion block (34), wherein a plurality of the diffusion blocks (34) are arranged circumferentially around the rotating disk (33) at equal intervals; After the liquid in the liquid storage cylinder (11) flows through the fixed cylinder (31) to the rotating disk (33), the rotating disk (33) drives the diffusion block (34) to rotate so as to spray the liquid in all directions.

4. The multifunctional UAV according to claim 3, characterized in that: The protective device (4) comprises: a driving cylinder (41) which is arranged on the outer wall of the horizontal rod (22); A protective sleeve (42) disposed on the end of the piston rod of the driving cylinder (41) and sleeved on the outer wall of the fixing cylinder (31); The inner diameter of the protective sleeve (42) is not less than the outer diameter of the rotating disk (33); When the driving cylinder (41) drives the protective sleeve (42) to move downward, the protective sleeve (42) is suitable for limiting the spraying direction of the liquid on the rotating disk (33).

5. The multifunctional UAV according to claim 4, characterized in that: The bottom wall of the protective sleeve (42) is arranged obliquely, and the bottom wall of the protective sleeve (42) gradually decreases from one side to the other side; When the machine body (1) flies horizontally on the photovoltaic panel, the lowest point of a protective cover (42) is close to an outer edge of the photovoltaic panel.

6. The multifunctional UAV according to claim 5, characterized in that: The inner wall of the protective sleeve (42) is provided with a plurality of cleaning blocks (43) at equal intervals, one cleaning block (43) corresponds to one diffusion block (34), and the width of the cleaning block (43) is not greater than the interval between two adjacent diffusion blocks (34); wherein when the cleaning block (43) is inserted between the two diffusion blocks (34), it is suitable for cleaning impurities between the two diffusion blocks (34).

7. The multifunctional UAV according to claim 6, characterized in that: A slope (44) is provided on the bottom wall of each cleaning block (43); the slope (44) is in an arc shape, and the slope (44) extends from one end of the cleaning block (43) close to the protective sleeve (42) to the other end; When the lowest point of the bottom wall of the protective sleeve (42) is lower than the rotating disk (33), the inclined surface (44) of the bottom wall of the cleaning block (43) is suitable for guiding the liquid diffused outward through the diffusion block (34) so ​​that the liquid is sprayed toward the outer wall of the fixed cylinder (31).

8. The multifunctional UAV according to claim 7, characterized in that: A guide surface (45) is respectively provided on both sides of the bottom wall of each cleaning block (43), and the guide surface (45) is suitable for abutting against the sharp corner of the upper edge of the diffusion block (34); When the protective sleeve (42) moves downward until the guide surface (45) abuts against the diffusion block (34), the guide surface (45) is suitable for pushing the rotating disk (33) to rotate so that the cleaning block (43) is inserted between the two diffusion blocks (34).

9. A spraying mechanism for a photovoltaic panel cleaning drone, characterized in that: include: Spraying device (3); A protective device (4), the lifting sleeve of which is arranged on the outer wall of the spraying device (3); When the rotating disk (33) of the spraying device (3) rotates to spray the liquid in all directions, the protective device (4) moves downward to surround the outside of the rotating disk (33) to limit the coverage of the rotating disk spraying.

10. The spraying mechanism for a photovoltaic panel cleaning drone as claimed in claim 9, characterized in that: The bottom wall of the protective sleeve (42) is arranged obliquely, and the bottom wall of the protective sleeve (42) gradually decreases from one side to the other side; When the machine body (1) flies horizontally on the photovoltaic panel, the lowest point of a protective cover (42) is close to an outer edge of the photovoltaic panel.

11. The spraying mechanism for a photovoltaic panel cleaning drone as claimed in claim 10, characterized in that: The inner wall of the protective sleeve (42) is provided with a plurality of cleaning blocks (43) at equal intervals, one cleaning block (43) corresponds to one diffusion block (34), and the width of the cleaning block (43) is not greater than the interval between two adjacent diffusion blocks (34); A slope (44) is provided on the bottom wall of each cleaning block (43); the slope (44) is in an arc shape, and the slope (44) extends from one end of the cleaning block (43) close to the protective sleeve (42) to the other end; When the lowest point of the bottom wall of the protective sleeve (42) is lower than the rotating disk (33), the inclined surface (44) of the bottom wall of the cleaning block (43) is suitable for guiding the liquid diffused outward through the diffusion block (34) so ​​that the liquid is sprayed toward the outer wall of the fixed cylinder (31).

12. A method for cleaning the edge of a photovoltaic panel, characterized in that: Using the multifunctional drone as described in any one of claims 1 to 8, the photovoltaic panel edge cleaning method comprises: The machine body (1) flies horizontally on the photovoltaic panel, and the rotating disk (33) of the spraying device (3) rotates to evenly spray the liquid onto the surface of the photovoltaic panel; The machine body (1) moves to a position close to the edge of the photovoltaic panel, and the corresponding protective device (4) moves downward to limit the direction of the liquid sprayed by the spraying device (3).

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