Automatic cleaning device for solar photovoltaic panel

Abstract

The invention relates to the technical field of photovoltaic panels, in particular to an automatic cleaning device for a solar photovoltaic panel. According to the technical scheme, the electromagnetic attraction assembly comprises a protective shell, an iron column, a coil, a hydraulic assembly, a magnetic metal block, an annular magnet and a hydraulic telescopic rod, the protective shell is fixedly installed on the side of an upper expansion plate, the iron column is fixedly installed in the protective shell, and the coil electrically connected with a solar panel is wound around the cambered surface of the iron column; a hydraulic assembly is fixedly installed in the protective shell and located at the end of the iron column, and an annular magnet is fixedly installed at the end of the hydraulic assembly. After the surface of the solar panel is covered with dust, the power generation efficiency of the solar panel is reduced, and the current flowing in the coil is reduced, so that the hydraulic telescopic rod extends out to enable the cleaning piece to move on the surface of the solar panel, the dust on the surface of the solar panel is scraped, and the influence of dust covering on power generation of the solar panel is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic panels, and in particular to an automatic cleaning device for solar photovoltaic panels. Background Art

[0002] Solar photovoltaic panels are devices that can convert sunlight into electrical energy. Solar photovoltaic panels work mainly based on the photoelectric effect of semiconductors. They have photovoltaic cells, and multiple photovoltaic cells are combined in series or parallel to achieve the required voltage and current output. In the process of power generation, almost no greenhouse gas emissions are generated, which is environmentally friendly and helps reduce environmental pollution and respond to climate change.

[0003] Solar photovoltaic panels are usually installed in flat, open locations without any obstructions, so as to receive sunlight to the maximum extent possible. The stronger the light intensity that hits the solar photovoltaic panels, the more electricity the solar photovoltaic panels will generate.

[0004] However, during the use of solar photovoltaic panels, dust in the air will continue to adhere to the surface of the solar photovoltaic panels, which will affect the light shining on the solar photovoltaic panels and reduce the power generation efficiency of the solar photovoltaic panels. Summary of the invention

[0005] The purpose of the present invention is to propose an automatic cleaning device for solar photovoltaic panels in view of the problem in the background technology that dust covers the solar photovoltaic panels and affects their power generation efficiency.

[0006] The technical solution of the present invention: an automatic cleaning device for a solar photovoltaic panel, including an automatic cleaning device for a solar photovoltaic panel, characterized in that it includes: a solar panel, side expansion panels are fixedly installed on both sides of the solar panel, and an upper expansion panel is fixedly installed on the top of the solar panel;

[0007] An electromagnetic attraction component, comprising a protective shell, an iron column, a coil, a hydraulic component, a magnetic metal block, an annular magnet and a hydraulic telescopic rod, wherein the protective shell is fixedly mounted on the side of an upper expansion plate, an iron column is fixedly mounted inside the protective shell, a coil electrically connected to a solar panel is wound around the arc surface of the iron column, a hydraulic component is fixedly mounted inside the protective shell and at the end of the iron column, an annular magnet is fixedly mounted at the end of the hydraulic component, a magnetic metal block is arranged between the annular magnet and the iron column, a top of the magnetic metal block is fixedly connected to the hydraulic component, and the hydraulic component is fixedly connected to the hydraulic telescopic rod through a hydraulic pipe;

[0008] The cleaning component comprises a slider, a round shaft and a cleaning piece, wherein the end of the hydraulic telescopic rod is fixedly connected to the slider, the slider slides on the shaft of the round shaft, and the cleaning pieces are arranged at both ends of the round shaft;

[0009] The cleaning member contacts the surface of the solar panel, the hydraulic telescopic rod is fixedly installed inside the upper expansion plate, and the sliding block slides left and right inside the upper expansion plate.

[0010] Optionally, the iron column and the coil are combined to form an electromagnet. When the solar panel operates normally, the magnetic force of the electromagnet is greater than the magnetic force of the annular magnet, and the iron column, the magnetic metal block and the annular magnet are in the same straight line.

[0011] Optionally, the hydraulic assembly includes a hydraulic pipe, a hydraulic plug, a straight rod and a limit block. The hydraulic pipe is fixedly installed inside the protective shell. The hydraulic pipe is slidably connected to the hydraulic plug inside. The bottom of the hydraulic plug is fixedly installed with a straight rod that runs through the hydraulic pipe. The bottom of the straight rod is fixedly installed with a magnetic metal block. The end of the hydraulic pipe is fixedly installed with a limit block that is misaligned with the annular magnet. The hydraulic pipe is connected to the hydraulic telescopic rod through the hydraulic pipe.

[0012] Optionally, a circular opening is opened in the middle of the slider, a ball is connected to the circular opening for rolling, a spiral track is opened at the shaft of the circular shaft, the ball rolls along the spiral track, the slider adopts a square structure, and both sides of the slider are in contact with the upper expansion plate.

[0013] Optionally, the cleaning member includes a gear, a chain, a cleaning block and a silicone strip, gears are fixedly installed at both ends of the circular shaft, the gears rotate inside the side expansion plate, the internal rotation of the side expansion plate is connected to an auxiliary gear, the gears and the auxiliary gears are connected by a chain, a cleaning block is installed at the height of the outer wall of the chain, a silicone strip is fixedly installed on the side of the cleaning block, and the silicone strip is in contact with the surface of the solar panel.

[0014] Optionally, the dusting assembly includes a support plate, a lower brush bar and an upper brush bar, the support plate is internally rotatably connected to the lower brush bar and the upper brush bar, the lower brush bar and the upper brush bar have the same shape, the bristles on the lower brush bar are in contact with the bristles on the upper brush bar, and when the silicone strip moves to the support plate, the upper brush bar and the lower brush bar are respectively located on the upper and lower sides of the silicone strip.

[0015] Optionally, the support plate is U-shaped, and an escape opening is provided at the bottom of the support plate and on the left side of the lower brush strip, an upper torque spring is elastically connected between the rotating shaft of the upper brush strip and the support plate, and a lower torque spring is elastically connected between the rotating shaft of the lower brush strip and the support plate.

[0016] Optionally, a reset control component is arranged between the hydraulic pipe and the iron column, and the reset control component includes an obstruction plate, a lower slope, an upper slope, a groove and an air spring. The upper slope is opened at the end of the obstruction plate and near the top, and the lower slope is opened at the end of the obstruction plate and near the bottom. The obstruction plate is located on the moving path of the magnetic metal block, and a groove is opened inside the hydraulic pipe. An air spring connecting the hydraulic pipe and the obstruction plate is fixedly installed in the groove.

[0017] Optionally, the angle between the lower inclined surface and the vertical surface is smaller than the angle between the upper inclined surface and the vertical surface, and the resistance exerted by the lower inclined surface on the obstruction plate is smaller than the resistance exerted by the upper inclined surface on the obstruction plate.

[0018] Optionally, the height of the gear is higher than the top height of the solar panel, and the height of the auxiliary gear is lower than the bottom height of the solar panel. Initially, the side of the silicone strip is in contact with the side expansion plate.

[0019] Compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0020] After the surface of the solar panel is covered with dust, the power generation efficiency of the solar panel is reduced, and the current flowing in the coil is reduced. At this time, the magnetic force of the annular magnet is greater than the magnetic force of the electromagnet formed by the iron column and the coil, so that the magnetic metal block moves and the hydraulic plug pushes the hydraulic oil in the hydraulic pipe into the hydraulic telescopic rod. The hydraulic telescopic rod is extended to move the cleaning member on the surface of the solar panel to scrape off the dust on the surface of the solar panel, thereby preventing the dust from covering and affecting the power generation of the solar panel.

[0021] Furthermore, the change in the current in the coil is used to determine the amount of dust on the surface of the solar panel. Only when the amount of dust covering the surface of the solar panel makes the current in the coil lower than the set value, the cleaning element can be used to clean the solar panel, thereby avoiding scratches on the surface of the solar panel caused by frequent cleaning of the solar panel.

[0022] Furthermore, by cooperating with the obstruction plate and the air spring to apply movement resistance to the magnetic metal block, and cooperating with the magnetic force of the annular magnet, it is prevented that after the dust on the surface of the solar panel is half cleaned, the current generated by the solar panel generates electricity to increase the magnetic force of the electromagnet, causing the magnetic metal block to reset, so that the solar panel is not completely cleaned, thereby achieving the effect of delaying the reset of the magnetic metal block.

[0023] Furthermore, the elasticity of the lower torque spring and the upper torque spring is utilized to reduce the friction force exerted by the lower brush bar and the upper brush bar on the silicone strip, thereby avoiding indentations on the silicone strip, which prevents the silicone strip from fully fitting the solar panel. The elastic force of the lower torque spring and the upper torque spring resets the lower brush bar and the upper brush bar, and the bristles of the lower brush bar and the upper brush bar are squeezed against each other, and vibrate in coordination with the elastic force of the lower torque spring and the upper torque spring, so as to shake off the dust on the lower brush bar and the upper brush bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is provided;

[0025] Figure 2 A schematic diagram of the structure of an obstruction plate according to an embodiment of the present invention is given;

[0026] Figure 3 A schematic diagram of a front and cross-sectional view of a hydraulic pipe structure according to an embodiment of the present invention is given;

[0027] Figure 4 A schematic cross-sectional view of an upper expansion plate structure according to an embodiment of the present invention is provided;

[0028] Figure 5 for Figure 4 A schematic diagram of the enlarged spiral track structure of part A;

[0029] Figure 6 It is a schematic cross-sectional view of the side expansion plate structure;

[0030] Figure 7 Schematic diagram of the lower brush bar structure;

[0031] Figure 8 It is a schematic cross-sectional view of the support plate structure from the right.

[0032] : 1. solar panel; 2. side expansion plate; 3. upper expansion plate; 4. electromagnetic attraction component; 41. protective shell; 42. iron column; 43. coil; 44. hydraulic pipe; 45. hydraulic plug; 46. straight rod; 47. magnetic metal block; 48. ring magnet; 49. limit block; 410. hydraulic telescopic rod; 5. cleaning component; 51. slider; 52. circular shaft; 53. spiral track; 54. ball; 55. gear; 56. chain; 57. cleaning block; 58. silicone strip; 6. dusting component; 61. support plate; 62. lower brush strip; 63. upper brush strip; 64. lower torque spring; 65. upper torque spring; 7. reset control component; 71. obstruction plate; 72. lower inclined surface; 73. upper inclined surface; 74. groove; 75. air spring. DETAILED DESCRIPTION

[0033] 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 only part of the embodiments of the present invention, rather than all of the embodiments.

[0034] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0035] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, 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 it can be indirectly connected 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.

[0038] Example 1

[0039] This embodiment provides an automatic cleaning device for solar photovoltaic panels, such as Figure 1 As shown, it includes a solar panel 1, side expansion panels 2 are fixedly installed on the left and right sides of the solar panel 1, and an upper expansion panel 3 is fixedly installed on the top of the solar panel 1.

[0040] like Figure 2 and Figure 3 As shown, an electromagnetic attraction component 4 is provided on the side of the side expansion plate 2, and the electromagnetic attraction component 4 includes a protective shell 41, an iron column 42, a coil 43, a hydraulic component, a magnetic metal block 47, an annular magnet 48 and a hydraulic telescopic rod 410. The protective shell 41 is fixedly installed on the side of the upper expansion plate 3, and the iron column 42 is fixedly installed inside the protective shell 41. The arc surface of the iron column 42 is wrapped with a coil 43 electrically connected to the solar panel 1.

[0041] The iron column 42, the magnetic metal block 47 and the annular magnet 48 are on the same straight line. The iron column 42 and the coil 43 form an electromagnet. When the solar panel 1 is operating normally, the magnetic force of the electromagnet is greater than the magnetic force of the annular magnet 48, and the magnetic metal block 47 is close to the iron column 42. When the solar panel 1 is covered with a lot of dust, the current generated by the solar panel 1 decreases, and the current flowing in the coil 43 decreases, so that the magnetic force of the electromagnet decreases. When the magnetic force of the electromagnet is less than the annular magnet 48, the magnetic metal block 47 moves toward the direction of the annular magnet 48, thereby achieving the effect of detecting the amount of dust on the surface of the solar panel 1.

[0042] A hydraulic assembly is fixedly installed inside the protective shell 41 and at the end of the iron column 42. The hydraulic assembly includes a hydraulic pipe 44, a hydraulic plug 45, a straight rod 46 and a limit block 49. The hydraulic pipe 44 is fixedly installed inside the protective shell 41. The hydraulic plug 45 is slidably connected inside the hydraulic pipe 44. The bottom of the hydraulic plug 45 is fixedly installed with a straight rod 46 that passes through the hydraulic pipe 44. The bottom of the straight rod 46 is fixedly installed with a magnetic metal block 47. The end of the hydraulic pipe 44 is fixedly installed with a limit block 49 that is misaligned with the annular magnet 48. The hydraulic pipe 44 is connected to the hydraulic telescopic rod 410 through the hydraulic pipe, and a magnetic metal block 47 is arranged between the annular magnet 48 and the iron column 42.

[0043] When the surface of the solar panel 1 is less covered with dust, the solar panel 1 generates a large amount of electricity, the magnetic force of the electromagnet formed by the coil 43 and the iron column 42 is greater than the annular magnet 48, the magnetic metal block 47 moves toward the iron column 42, the hydraulic plug 45 moves to the limit position, and there is a gap between the magnetic metal block 47 and the iron column 42; when the surface of the solar panel 1 is more covered with dust, the solar panel 1 generates a small amount of electricity, the magnetic force of the electromagnet formed by the coil 43 and the iron column 42 is less than the annular magnet 48, the magnetic force of the annular magnet 48 acts on the magnetic metal block 47, the magnetic metal block 47 moves toward the annular magnet 48, and the magnetic metal block 47 uses the straight rod 46 to push the hydraulic plug 45, thereby pushing the hydraulic oil in the hydraulic pipe 44 into the hydraulic telescopic rod 410, so that the hydraulic telescopic rod 410 extends.

[0044] like Figure 4 and Figure 5 As shown, a cleaning component 5 is provided inside the upper expansion plate 3, and the cleaning component 5 includes a slider 51, a round shaft 52 and a cleaning piece. The end of the hydraulic telescopic rod 410 is fixedly connected to the slider 51, and the slider 51 slides on the rod body of the round shaft 52. A circular opening is provided in the middle of the slider 51, and a ball 54 is rollingly connected in the circular opening. A spiral track 53 is provided on the rod body of the round shaft 52, and the ball 54 rolls along the spiral track 53. The slider 51 adopts a square structure, and both sides of the slider 51 are in contact with the upper expansion plate 3.

[0045] The hydraulic telescopic rod 410 pushes the slider 51 to move, and the slider 51 uses the ball 54 to rotate the circular shaft 52. The circular shaft 52 drives the cleaning member to move, and the cleaning member cleans the dust on the surface of the solar panel 1 to restore the power generation efficiency of the solar panel 1.

[0046] like Figure 6 As shown, cleaning parts are provided at both ends of the circular shaft 52, and the cleaning parts include a gear 55, a chain 56, a cleaning block 57 and a silicone strip 58. Gears 55 are fixedly installed at both ends of the circular shaft 52, and the gears 55 rotate inside the side expansion plate 2, and the internal rotation of the side expansion plate 2 is connected to the auxiliary gear. The gears 55 and the auxiliary gears are connected through a chain 56, and the cleaning block 57 is installed at the height of the outer wall of the chain 56. The silicone strip 58 is fixedly installed on the side of the cleaning block 57, and the silicone strip 58 is in contact with the surface of the solar panel 1. The rotation of the circular shaft 52 rotates the gear 55, so that the chain 56 moves and drives the cleaning block 57 and the silicone strip 58, and the silicone strip 58 scrapes the dust on the surface of the solar panel 1.

[0047] The height of the gear 55 is higher than the top of the solar panel 1, and the height of the auxiliary gear is lower than the bottom of the solar panel 1. Initially, the side of the silicone strip 58 contacts the side expansion plate 2. Thus, the moving range of the cleaning block 57 exceeds the top and bottom of the solar panel 1, and the dust on the surface of the solar panel 1 can be completely cleaned.

[0048] In this embodiment, after the surface of the solar panel 1 is covered with dust, the power generation efficiency of the solar panel 1 is reduced, and the current flowing in the coil 43 is reduced. At this time, the magnetic force of the annular magnet 48 is greater than the magnetic force of the electromagnet formed by the iron column 42 and the coil 43, so that the magnetic metal block 47 moves and the hydraulic plug 45 pushes the hydraulic oil in the hydraulic pipe 44 into the hydraulic telescopic rod 410. The hydraulic telescopic rod 410 is extended to move the cleaning member on the surface of the solar panel 1 to scrape off the dust on the surface of the solar panel 1 to prevent the dust from affecting the power generation of the solar panel 1.

[0049] Example 2

[0050] Based on Example 1, this embodiment proposes an automatic cleaning device for solar photovoltaic panels, such as Figure 2 As shown, a reset control assembly 7 is arranged between the hydraulic pipe 44 and the iron column 42. The reset control assembly 7 includes an obstruction plate 71, a lower inclined surface 72, an upper inclined surface 73, a groove 74 and an air spring 75. The upper inclined surface 73 is provided at the end of the obstruction plate 71 and near the top, and the lower inclined surface 72 is provided at the end of the obstruction plate 71 and near the bottom. The obstruction plate 71 is located on the moving path of the magnetic metal block 47. A groove 74 is provided inside the hydraulic pipe 44, and an air spring 75 connecting the hydraulic pipe 44 and the obstruction plate 71 is fixedly installed in the groove 74.

[0051] The obstruction plate 71 is used to obstruct the movement of the magnetic metal block 47. When the surface of the solar panel 1 is covered with a lot of dust, the magnetic force of the annular magnet 48 is greater than the magnetic force of the electromagnet composed of the iron column 42 and the coil 43. The magnetic metal block 47 first moves to the obstruction plate 71, and the magnetic metal block 47 overcomes the resistance exerted on it by the obstruction plate 71 and the air spring 75.

[0052] When the surface of the solar panel 1 is covered with little dust, the magnetic force of the annular magnet 48 is smaller than the magnetic force of the electromagnet composed of the iron column 42 and the coil 43. However, the magnetic metal block 47 cannot move because the obstruction plate 71 and the air spring 75 obstruct the movement of the magnetic metal block 47. When the solar panel 1 is completely cleaned, the magnetic force of the annular magnet 48 is smaller than the magnetic force of the electromagnet composed of the iron column 42 and the coil 43 and the resistance applied by the obstruction plate 71 and the air spring 75. The magnetic metal block 47 can then move from the top of the obstruction plate 71 to the bottom. This avoids the situation where, after half of the dust on the surface of the solar panel 1 has been cleaned, the current generated by the dust-cleaned part and the uncleaned part of the solar panel 1 is sufficient to make the magnetic force of the electromagnet greater than the annular magnet 48, resulting in the solar panel 1 not being completely cleaned and the magnetic metal block 47 being attracted and reset by the electromagnet.

[0053] The angle between the lower slope 72 and the vertical plane is smaller than the angle between the upper slope 73 and the vertical plane, and the resistance exerted by the lower slope 72 on the blocking plate 71 is smaller than the resistance exerted by the upper slope 73 on the blocking plate 71. It is easier for the magnetic metal block 47 to move upward than to move downward.

[0054] In this embodiment, the blocking plate 71 and the air spring 75 cooperate to apply movement resistance to the magnetic metal block 47, and cooperate with the magnetic force of the annular magnet 48 to prevent the current generated by the solar panel 1 from increasing the magnetic force of the electromagnet after the dust on the surface of the solar panel 1 is half cleaned, causing the magnetic metal block 47 to reset, so that the solar panel 1 is not completely cleaned, thereby achieving the effect of delaying the reset of the magnetic metal block 47.

[0055] Example 3

[0056] Based on the above-mentioned embodiment 1 or 2, this embodiment proposes an automatic cleaning device for solar photovoltaic panels, such as Figure 7 and Figure 8 As shown, the dusting assembly 6 includes a support plate 61, a lower brush strip 62 and an upper brush strip 63. The lower brush strip 62 and the upper brush strip 63 are rotatably connected inside the support plate 61. The lower brush strip 62 and the upper brush strip 63 have the same shape. The bristles on the lower brush strip 62 are in contact with the bristles on the upper brush strip 63. When the silicone strip 58 moves to the support plate 61, the upper brush strip 63 and the lower brush strip 62 are respectively located on the upper and lower sides of the silicone strip 58.

[0057] Move the silicone strip 58 to the support plate 61, and use the lower brush strip 62 and the upper brush strip 63 to clean the upper and lower sides of the silicone strip 58 to prevent the silicone strip 58 contaminated with dust from repeatedly cleaning the solar panel 1 and failing to clean the solar panel 1.

[0058] The support plate 61 is U-shaped, and an escape opening is opened at the bottom of the support plate 61 and on the left side of the lower brush strip 62. An upper torque spring 65 is elastically connected between the rotating shaft of the upper brush strip 63 and the support plate 61, and a lower torque spring 64 is elastically connected between the rotating shaft of the lower brush strip 62 and the support plate 61.

[0059] After the silicone strip 58 contacts the lower brush strip 62 and the upper brush strip 63, the lower brush strip 62 and the upper brush strip 63 bend, and the elasticity of the lower torque spring 64 and the upper torque spring 65 is used to reduce the friction force applied by the lower brush strip 62 and the upper brush strip 63 to the silicone strip 58, thereby avoiding indentations on the silicone strip 58 and preventing it from fully fitting the solar panel 1. After the silicone strip 58 is moved out of the support plate 61, the elastic force of the lower torque spring 64 and the upper torque spring 65 resets the lower brush strip 62 and the upper brush strip 63, and the bristles of the lower brush strip 62 and the upper brush strip 63 squeeze each other.

[0060] In this embodiment, the elasticity of the lower torque spring 64 and the upper torque spring 65 is utilized to reduce the friction force exerted by the lower brush strip 62 and the upper brush strip 63 on the silicone strip 58, thereby avoiding the formation of indentations on the silicone strip 58, which prevents the silicone strip 58 from being completely fitted to the solar panel 1, and the elastic force of the lower torque spring 64 and the upper torque spring 65 resets the lower brush strip 62 and the upper brush strip 63, and the bristles of the lower brush strip 62 and the upper brush strip 63 are squeezed against each other and vibrate in coordination with the elastic force of the lower torque spring 64 and the upper torque spring 65 to shake off the dust on the lower brush strip 62 and the upper brush strip 63.

[0061] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An automatic cleaning device for solar photovoltaic panels, characterized in that: include: A solar panel (1), wherein side expansion panels (2) are fixedly mounted on both left and right sides of the solar panel (1), and an upper expansion panel (3) is fixedly mounted on the top of the solar panel (1); An electromagnetic attraction component (4) comprises a protective shell (41), an iron column (42), a coil (43), a hydraulic component, a magnetic metal block (47), an annular magnet (48) and a hydraulic telescopic rod (410), wherein the protective shell (41) is fixedly mounted on the side of the upper expansion plate (3), the iron column (42) is fixedly mounted inside the protective shell (41), the arc surface of the iron column (42) is wound with a coil (43) electrically connected to the solar panel (1), the hydraulic component is fixedly mounted inside the protective shell (41) and at the end of the iron column (42), the annular magnet (48) is fixedly mounted at the end of the hydraulic component, a magnetic metal block (47) is arranged between the annular magnet (48) and the iron column (42), the top of the magnetic metal block (47) is fixedly connected to the hydraulic component, and the hydraulic component is fixedly connected to the hydraulic telescopic rod (410) through a hydraulic pipe; A cleaning assembly (5) comprises a slider (51), a round shaft (52) and a cleaning piece, wherein the end of the hydraulic telescopic rod (410) is fixedly connected to the slider (51), the slider (51) slides on the shaft of the round shaft (52), and the cleaning piece is provided at both ends of the round shaft (52); The cleaning member contacts the surface of the solar panel (1), the hydraulic telescopic rod (410) is fixedly mounted inside the upper expansion plate (3), and the slider (51) slides left and right inside the upper expansion plate (3).

2. The automatic cleaning device for solar photovoltaic panels according to claim 1, characterized in that: The iron column (42) and the coil (43) are combined to form an electromagnet. When the solar panel (1) operates normally, the magnetic force of the electromagnet is greater than the magnetic force of the annular magnet (48), and the iron column (42), the magnetic metal block (47) and the annular magnet (48) are located on the same straight line.

3. The automatic cleaning device for solar photovoltaic panels according to claim 1, characterized in that: The hydraulic assembly comprises a hydraulic pipe (44), a hydraulic plug (45), a straight rod (46) and a limit block (49); the hydraulic pipe (44) is fixedly mounted inside the protective shell (41); the hydraulic pipe (44) is slidably connected to the hydraulic plug (45); a straight rod (46) penetrating the hydraulic pipe (44) is fixedly mounted at the bottom of the hydraulic plug (45); a magnetic metal block (47) is fixedly mounted at the bottom end of the straight rod (46); a limit block (49) offset from the annular magnet (48) is fixedly mounted at the end of the hydraulic pipe (44); and the hydraulic pipe (44) is connected to the hydraulic telescopic rod (410) through the hydraulic pipe.

4. The automatic cleaning device for solar photovoltaic panels according to claim 1, characterized in that: A circular opening is provided in the middle of the slider (51), a ball (54) is rollingly connected in the circular opening, a spiral track (53) is provided at the shaft of the circular shaft (52), the ball (54) rolls along the spiral track (53), the slider (51) adopts a square structure, and both sides of the slider (51) are in contact with the upper expansion plate (3).

5. The automatic cleaning device for solar photovoltaic panels according to claim 1, characterized in that: The cleaning member comprises a gear (55), a chain (56), a cleaning block (57) and a silicone strip (58). Gears (55) are fixedly mounted on both ends of the circular shaft (52). The gear (55) rotates inside the side expansion plate (2). The inside of the side expansion plate (2) is connected to an auxiliary gear. The gear (55) and the auxiliary gear are connected via a chain (56). A cleaning block (57) is mounted at the height of the outer wall of the chain (56). A silicone strip (58) is fixedly mounted on the side of the cleaning block (57). The silicone strip (58) contacts the surface of the solar panel (1).

6. The automatic cleaning device for solar photovoltaic panels according to claim 5, characterized in that: The dusting assembly (6) comprises a support plate (61), a lower brush strip (62) and an upper brush strip (63); the support plate (61) is internally rotatably connected with the lower brush strip (62) and the upper brush strip (63); the lower brush strip (62) and the upper brush strip (63) have the same shape; the bristles on the lower brush strip (62) are in contact with the bristles on the upper brush strip (63); when the silicone strip (58) moves to the support plate (61), the upper brush strip (63) and the lower brush strip (62) are respectively located on the upper and lower sides of the silicone strip (58).

7. The automatic cleaning device for solar photovoltaic panels according to claim 6, characterized in that: The support plate (61) is in a U shape, and a relief opening is provided at the bottom of the support plate (61) and on the left side of the lower brush strip (62). An upper torque spring (65) is elastically connected between the rotating shaft of the upper brush strip (63) and the support plate (61), and a lower torque spring (64) is elastically connected between the rotating shaft of the lower brush strip (62) and the support plate (61).

8. The automatic cleaning device for solar photovoltaic panels according to claim 7, characterized in that: A reset control assembly (7) is arranged between the hydraulic pipe (44) and the iron column (42), and the reset control assembly (7) comprises an obstruction plate (71), a lower inclined surface (72), an upper inclined surface (73), a groove (74) and an air spring (75). The upper inclined surface (73) is provided at the end of the obstruction plate (71) and near the top, and the lower inclined surface (72) is provided at the end of the obstruction plate (71) and near the bottom. The obstruction plate (71) is located on the moving path of the magnetic metal block (47). A groove (74) is provided inside the hydraulic pipe (44), and an air spring (75) connecting the hydraulic pipe (44) and the obstruction plate (71) is fixedly installed inside the groove (74).

9. The automatic cleaning device for solar photovoltaic panels according to claim 8, characterized in that: The angle between the lower inclined surface (72) and the vertical surface is smaller than the angle between the upper inclined surface (73) and the vertical surface, and the resistance exerted by the lower inclined surface (72) on the obstruction plate (71) is smaller than the resistance exerted by the upper inclined surface (73) on the obstruction plate (71).

10. The automatic cleaning device for solar photovoltaic panels according to claim 9, characterized in that: The height of the gear (55) is higher than the top height of the solar panel (1), and the height of the auxiliary gear is lower than the bottom height of the solar panel (1). Initially, the side of the silicone strip (58) is in contact with the side expansion plate (2).

Images