A solar power generation panel protection device

Abstract

The present invention relates to the technical field of solar panels, and specifically to a solar power generation panel protection device, including a panel body, and also including fixing plates symmetrically fixedly installed on both sides of the panel body, a connecting plate is fixedly installed on one side of the two fixing plates, a driving component is arranged on the top of one of the fixing plates, and a pressing component and a water storage component transmission-connected to the pressing component are arranged on the top of the panel body and the fixing plate near the connecting plate. In the present invention, when stains that are significantly higher than the panel body appear on the surface of the panel under the action of the adjusting component, the pressing component and the water storage component, the rate at which the water in the water storage bag flows out through the water outlet pipe and the cleaning force of the cleaning brush on the panel body surface are increased, achieving the effect of changing the cleaning force according to the stubbornness of the stains, thereby achieving the cleaning effect of cleaning the stubborn stains to meet the standard.

Description

Technical Field

[0001] The invention relates to the technical field of solar panels, and in particular to a solar power generation panel protection device. Background Art

[0002] Solar panels are key equipment for converting solar energy into electrical energy. When operating in the field, they face a complex and changeable natural environment. These environmental factors include but are not limited to dust, rain, bird droppings, hail, high temperatures, low temperatures, etc., which may have a negative impact on the performance and life of photovoltaic panels. Therefore, they need to be cleaned regularly to prevent solid stains such as bird droppings and dirt from affecting the normal operation of the panels. For example, a self-cleaning photovoltaic panel device disclosed in application number CN202410561866.3 provides a device that sets the first brush and the second brush to move in different directions so that the cleaning effect on the photovoltaic panel is better.

[0003] In addition, an existing application number CN202321510950.X discloses a photovoltaic panel cleaning assembly, which includes a photovoltaic bracket, a photovoltaic panel and a cleaning unit. The photovoltaic panel is fixedly mounted on the upper surface of the photovoltaic bracket, and the cleaning unit includes a cleaning roller for cleaning the photovoltaic panel and a driving unit for driving the cleaning roller to move. This cleaning device can clean the photovoltaic panel, but during the rotation of the cleaning roller, if the cleaning roller encounters stains that are significantly higher than the surface of the panel body, the cleaning roller cannot change the cleaning intensity, resulting in the stains may not be completely removed, and the cleaning effect cannot meet the standard. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a solar power generation panel protection device, which can effectively solve the problem that when the prior art uses a cleaning roller to clean the surface of the panel, the cleaning intensity cannot be increased for stains that are obviously higher than the surface of the panel body, resulting in the cleaning effect failing to meet the standard.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a solar power generation panel protection device, comprising a panel body, and also comprising fixing plates symmetrically fixedly mounted on both sides of the panel body, a connecting plate being fixedly mounted on one side of the two fixing plates, a driving component being arranged on the top of one of the fixing plates, and a pressing component and a water storage component being transmission-connected to the pressing component being arranged on the top of the panel body and one end of the fixing plate close to the connecting plate;

[0007] The pressing assembly comprises two support plates respectively symmetrically and slidably mounted on the top of the fixed plate, a fixing rod is fixedly mounted on the top of the two support plates, a worm is rotatably mounted on the top of the fixing rod, a plurality of pairs of main support shafts are rotatably mounted on the top of the fixing rod, the fixing rod is transmission-connected to the main support shaft, the bottom end of the main support shaft passes through the top wall of the fixing rod and is fixedly mounted with a magnetorheological fluid coupling, a slave support shaft is fixedly mounted on the output end of the magnetorheological fluid coupling, and a pressing plate is fixedly mounted on the bottom end of the slave support shaft;

[0008] The water storage assembly includes a plurality of installation cavities opened inside the fixing rod, a plurality of pairs of the pressing plates are respectively contained in the corresponding installation cavities, a water storage bag is fixedly installed inside the installation cavity, the plurality of pairs of the pressing plates are placed on one side of the water storage bag, a plurality of water outlet pipes are fixedly connected to the bottom of the water storage bag, and the bottom ends of the water outlet pipes penetrate the bottom wall of the fixing rod;

[0009] An adjusting component for adjusting the rotation speed of the slave support shaft is arranged on one side of the fixing rod away from the connecting plate, and a water injection component for conveying cleaning liquid to the water storage bag is arranged on the top of the connecting plate.

[0010] The driving assembly includes a motor slidably mounted on the top side of one of the fixed plates, a main shaft is fixedly mounted on the output end of the motor, a gear is fixedly mounted on the outer side of the main shaft, and a rack meshing with the gear is fixedly mounted on the top of the corresponding fixed plate.

[0011] The end of the main shaft away from the motor is fixedly connected to a gearbox, and the output end of the gearbox is fixedly installed with a slave shaft, the slave shaft passes through two support plates and is rotatably connected thereto, and the slave shaft is placed below the fixed rod, and the interior of the slave shaft is provided with mounting grooves corresponding to each mounting cavity, respectively, and a pair of magnets with magnetic repulsion are symmetrically arranged inside the mounting grooves, and a plurality of cleaning bristles are fixedly installed on the side of each pair of magnets away from each other, and the end of the cleaning bristles away from the magnet passes through the side wall of the slave shaft.

[0012] The adjustment component includes a plurality of mounting grooves provided on a side of a fixing rod away from a connecting plate, the mounting grooves corresponding to the mounting cavity positions one by one, a sliding rheostat is provided in the inner wall of the mounting groove, the sliding rheostat includes a sliding piece slidably installed inside the mounting groove, and the sliding piece is limitedly slidably arranged in the mounting groove, a spring is fixedly connected between the sliding piece and the inner wall of the mounting groove, an adjustment rod is fixedly installed on one end of the sliding piece away from the spring, a scraper is fixedly installed on one end of the adjusting rod away from the sliding piece, the scraper is made of aluminum alloy, and there is a gap between the bottom of the scraper and the upper surface of the solar panel body, the sliding rheostat is electrically connected to a DC power supply and constitutes a transmission ratio circuit, and during the sliding of the sliding piece toward the scraper direction, the resistance of the sliding rheostat in the transmission ratio circuit increases.

[0013] A worm is rotatably mounted on the top of the fixed rod, the worm is transmission-connected to the driving assembly, and a worm wheel meshing with the worm is fixedly mounted on the outer side of the main support shaft.

[0014] The water injection assembly includes a water tank fixedly installed on the top of the connecting plate, a water pump fixedly installed on the top of the water tank, a water pipe fixedly connected to the side of the water tank close to the fixed rod, the water pipe is connected to each water storage bag through a plurality of connecting pipes, and a one-way valve that can only supply water toward the water storage bag is fixedly installed inside the connecting pipe.

[0015] The top of the water storage tank is fixedly connected with a water inlet pipe, and the top of the water inlet pipe is fixedly installed with a filter screen.

[0016] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] 1. When stains that are significantly higher than the surface of the battery panel body appear on the upper surface of the battery panel body, the stains contact the scraper, and the scraper, which is subject to resistance, drives the adjusting rod and the sliding plate to slide in the direction of the fixed rod, compressing the spring, and the effective resistance of the corresponding sliding rheostat decreases, and the current increases, causing the electromagnetic field strength to increase, thereby affecting the state of the magnetorheological fluid inside the magnetorheological fluid coupling, that is, the viscosity of the magnetorheological fluid increases due to the increase in electromagnetic strength, thereby increasing the bonding strength between the main support shaft and the slave support shaft, and then increasing the rotation speed of the slave support shaft and the pressing plate, so that the amount of cleaning fluid flowing out of the water storage bag through the water outlet pipe increases, and more cleaning fluid falls on the surface of the battery panel body. At the same time, as the magnetic field strength increases, the repulsive force between the corresponding two magnets increases, and the cleaning bristles move outward, so that the cleaning force of the cleaning bristles on the surface of the battery panel body increases when the cleaning bristles rotate. After that, as the power of the fixed rod moving is greater than the resistance of the stain to the scraper, the scraper passes over the stain, and the sliding plate and the adjusting rod also move to the direction of the scraper under the action of the spring elastic force to reset;

[0018] 2. When cleaning the solar panel body regularly, the main shaft and gear are driven to rotate through the output end of the motor. When the gear rotates, it moves away from the connecting plate at the top of the solar panel body through the meshing with the rack, and drives the slave shaft to move together through the gearbox. The gearbox changes the speed of the output end by matching the gear ratios between the gears. Then, under the action of the gearbox, the slave shaft can drive the cleaning brush to rotate at a speed greater than the speed of the main shaft to clean the basic dust on the surface of the solar panel body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the driving assembly of the present invention;

[0022] Figure 3 It is a schematic diagram of the main cross-sectional structure of the fixing rod of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the rotating shaft, magnet and cleaning bristles of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the worm, worm wheel and pressing plate of the present invention;

[0025] Figure 6 It is a schematic diagram of the side cross-sectional structure of the fixing rod of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the water storage tank, water outlet pipe and water storage bag of the present invention.

[0027] 1. Battery panel body; 2. Fixed plate; 3. Connecting plate; 4. Driving assembly; 41. Motor; 42. Main rotating shaft; 43. Gear; 44. Rack; 45. Gearbox; 46. Slave rotating shaft; 47. Magnet; 48. Cleaning bristles; 5. Pressing assembly; 51. Support plate; 52. Fixed rod; 53. Worm; 54. Main supporting shaft; 541. Magnetorheological fluid coupling; 542. Slave supporting shaft; 55. Worm gear; 56. Pressing plate; 6. Water storage assembly; 61. Mounting cavity; 62. Water storage bag; 63. Water outlet pipe; 7. Adjusting assembly; 71. Mounting groove; 72. Spring; 73. Slide; 74. Adjusting rod; 75. Scraper; 8. Water injection assembly; 81. Water storage tank; 811. Water pump; 82. Water inlet pipe; 83. Filter; 84. Water pipe; 85. Connecting pipe. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. 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.

[0029] The present invention will be further described below in conjunction with the embodiments.

[0030] Example: Refer to Figures 1 to 7 A solar panel protection device includes a panel body 1, and also includes fixing plates 2 symmetrically fixedly installed on both sides of the panel body 1, a connecting plate 3 is fixedly installed on one side of the two fixing plates 2, a driving component 4 is arranged on the top of one of the fixing plates 2, and a pressing component 5 and a water storage component 6 that is transmission-connected to the pressing component 5 are arranged on the top of one end of the panel body 1 and the fixing plate 2 close to the connecting plate 3;

[0031] The pressing assembly 5 includes two support plates 51 symmetrically and slidably mounted on the top of the fixed plate 2, a fixed rod 52 is fixedly mounted on the top of the two support plates 51, a worm 53 is rotatably mounted on the top of the fixed rod 52, the worm 53 is transmission-connected to the driving assembly 4, a plurality of pairs of main support shafts 54 are rotationally mounted on the top of the fixed rod 52, a worm wheel 55 meshing with the worm 53 is fixedly mounted on the outer side of the main support shaft 54, the bottom end of the main support shaft 54 ​​passes through the top wall of the fixed rod 52 and is fixedly mounted with a magnetorheological fluid coupling 541, a slave support shaft 542 is fixedly mounted on the output end of the magnetorheological fluid coupling 541, a pressing plate 56 is fixedly mounted on the bottom end of the slave support shaft 542, when the worm 53 transmission-connected to the driving assembly 4 starts to rotate, the worm 53 drives the worm wheel 55 to rotate through the meshing transmission, and when the worm wheel 55 rotates, the slave support shaft 542 and the pressing plate 56 are driven to rotate through the main support shaft 54 ​​and the magnetorheological fluid coupling 541;

[0032] The water storage assembly 6 includes a plurality of installation cavities 61 opened inside the fixed rod 52, and a plurality of pairs of pressing plates 56 are respectively contained in the corresponding installation cavities 61. A water storage bag 62 is fixedly installed inside the installation cavity 61. The plurality of pairs of pressing plates 56 are placed on one side of the water storage bag 62. The bottom of the water storage bag 62 is fixedly connected with a plurality of water outlet pipes 63. The bottom end of the water outlet pipe 63 passes through the bottom wall of the fixed rod 52. When the pressing plate 56 rotates driven by the support shaft 542, the rotating pressing plate 56 squeezes the water storage bag 62, thereby causing the cleaning liquid in the water storage bag 62 to flow out through the water outlet pipe 63.

[0033] Specifically, refer to Figures 2 to 4The driving assembly 4 includes a motor 41 slidably mounted on the top side of one of the fixed plates 2, a main shaft 42 is fixedly mounted on the output end of the motor 41, a gear 43 is fixedly mounted on the outer side of the main shaft 42, a rack 44 meshing with the gear 43 is fixedly mounted on the top of the corresponding fixed plate 2, a gearbox 45 is fixedly connected to the end of the main shaft 42 away from the motor 41, a slave shaft 46 is fixedly mounted on the output end of the gearbox 45, the slave shaft 46 passes through the two support plates 51 and is rotatably connected thereto, and the slave shaft 46 is placed below the fixed rod 52, and a placement groove corresponding to each installation cavity 61 is opened inside the slave shaft 46, and a pair of magnets 47 with magnetic repulsion are symmetrically arranged inside the placement groove, and each pair of magnets 47 mutually repel each other. A plurality of cleaning bristles 48 are fixedly installed on the side away from the magnet 47, and the end of the cleaning bristles 48 away from the magnet 47 passes through the side wall of the slave shaft 46; the main shaft 42 and the gear 43 are driven to rotate through the output end of the motor 41, and the gear 43 moves at the top of the solar panel body 1 in the direction away from the connecting plate 3 through the engagement with the rack 44 when rotating, and drives the slave shaft 46 to move together through the gearbox 45 and drives the fixing rod 52 to move together through the support plate 51. The gearbox 45 changes the rotation speed of the output end by matching the gear ratios between the gears, and then under the action of the gearbox 45, the slave shaft 46 can drive the cleaning bristles 48 to rotate at a speed greater than the rotation speed of the main shaft 42 to clean the basic dust on the surface of the solar panel body 1.

[0034] Furthermore, an adjustment component 7 for adjusting the rotation speed of the slave support shaft 542 is provided on the side of the fixed rod 52 away from the connecting plate 3. The adjustment component 7 includes a plurality of mounting grooves 71 provided on the side of the fixed rod 52 away from the connecting plate 3. The mounting grooves 71 correspond to the mounting cavities 61 in position one by one. A sliding rheostat is provided in the inner wall of the mounting groove 71. The sliding rheostat includes a slide 73 slidably installed inside the mounting groove 71, and the slide 73 is limitedly slidably arranged in the mounting groove 71. A spring 72 is fixedly connected between the slide 73 and the inner wall of the mounting groove 71. An adjustment rod 74 is fixedly installed on one end of the slide 73 away from the spring 72. The adjustment rod A scraper 75 is fixedly installed at one end 74 away from the sliding piece 73. The scraper 75 is made of aluminum alloy. There is a gap between the bottom of the scraper 75 and the upper surface of the solar panel body 1. The sliding rheostat is electrically connected to a DC power supply and constitutes a transmission ratio circuit. When the sliding piece 73 slides toward the scraper 75, the resistance of the sliding rheostat in the transmission ratio circuit increases. Since the sliding piece 73 is limitedly slidably arranged in the mounting groove 71, the sliding piece 73 will not slide out of the mounting groove 71. When the fixing rod 52 moves, if the surface stains of the solar panel body 1 are not obviously higher than the solar panel body 1, the scraper 75 will not be subject to resistance. If the surface stains of the solar panel body 1 are obviously When the bottom end of the scraper 75 is significantly higher than the battery panel body 1, the stain has a higher degree of stubbornness. When the bottom end of the scraper 75 touches it, the scraper 75, which is subject to resistance, drives the adjustment rod 74 and the sliding plate 73 to slide in the direction of the fixed rod 52, compressing the spring 72, and the effective resistance of the corresponding sliding rheostat decreases, and the current increases, resulting in an increase in the electromagnetic field strength, thereby affecting the state of the magnetorheological fluid inside the magnetorheological fluid coupling 541, that is, the viscosity of the magnetorheological fluid increases due to the increase in electromagnetic intensity, thereby increasing the bonding strength between the main support shaft 54 ​​and the slave support shaft 542, thereby increasing the rotation speed of the slave support shaft 542 and the pressing plate 56, so that the water storage bag The amount of cleaning liquid flowing out of 62 through the outlet pipe 63 increases, and more cleaning liquid falls onto the surface of the solar panel body 1. At the same time, as the magnetic field strength increases, the repulsive force between the corresponding two magnets 47 increases, and the cleaning bristles 48 move outward, so that the cleaning force on the surface of the solar panel body 1 increases when the cleaning bristles 48 rotate. Then, as the power of the movement of the fixed rod 52 is greater than the resistance of the stain to the scraper 75, the scraper 75 passes over the stain, and the sliding piece 73 and the adjusting rod 74 also move to the direction of the scraper 75 under the action of the elastic force of the spring 72 to reset. Moreover, since the scraper 75 is made of aluminum alloy, it will not slide down due to gravity when the fixed rod 52 moves.

[0035] Reference Figure 7A water injection assembly 8 for conveying cleaning liquid to the water storage bag 62 is provided on the top of the connecting plate 3. The water injection assembly 8 includes a water storage tank 81 fixedly installed on the top of the connecting plate 3. The top of the water storage tank 81 is fixedly connected with a water inlet pipe 82. The top of the water inlet pipe 82 is fixedly installed with a filter screen 83. The top of the water storage tank 81 is fixedly installed with a water pump 811. The side of the water storage tank 81 close to the fixed rod 52 is fixedly connected with a water delivery pipe 84. The water delivery pipe 84 is respectively connected to each water storage bag 62 through a plurality of connecting pipes 85. The connecting pipe 85 is connected to each other, and a one-way valve is fixedly installed inside the connecting pipe 85, which can only transport water toward the water storage bag 62; the water inlet pipe 82 allows the water storage tank 81 to collect rainwater during rainfall, and the filter screen 83 is used to prevent fallen leaves and other debris from entering the water storage tank 81. The water pump 811 can regularly transport water to the water storage bag 62 through the water pipe 84 and the connecting pipe 85. The one-way valve inside the connecting pipe 85 prevents the water in the water storage bag 62 from flowing back into the water storage tank 81 when the water storage bag 62 is squeezed by the pressing plate 56.

[0036] The working principle of this device is as follows:

[0037] 1. When cleaning the battery panel body 1 regularly, the main shaft 42 and the gear 43 are driven to rotate by the output end of the motor 41. When the gear 43 rotates, it moves away from the connecting plate 3 at the top of the battery panel body 1 through meshing with the rack 44, and drives the slave shaft 46 to move together through the gearbox 45. The gearbox 45 changes the speed of the output end by matching the gear ratios between the gears. Then, under the action of the gearbox 45, the slave shaft 46 can drive the cleaning bristles 48 to rotate at a speed greater than the speed of the main shaft 42 to clean the surface of the battery panel body 1. At the same time, when the fixed rod 52 is driven to move together by the rotating shaft 46 through the support plate 51, the adjusting rod 74 and the scraper 75 slidably installed in the mounting groove 71 also move accordingly. Since the adjusting rod 74 is slightly separated from the upper surface of the solar panel body 1, ordinary dust will not affect the movement of the scraper 75. At this time, the supporting shaft 542 and the pressing plate 56 rotate at a basic speed. The water outlet speed squeezed by the pressing plate 56 and the rotation speed of the cleaning bristles 48 can meet the requirements of the upper surface cleaning effect of the solar panel body 1.

[0038] 2. When a stain that is significantly higher than the battery panel body 1 appears on the upper surface of the battery panel body 1, the stain contacts the scraper 75. The scraper 75, which is subjected to resistance, drives the adjustment rod 74 and the slide 73 to slide in the direction of the fixed rod 52 and compresses the spring 72. The effective resistance of the corresponding sliding rheostat decreases, and the current increases, resulting in an increase in the electromagnetic field strength, thereby affecting the state of the magnetorheological fluid inside the magnetorheological fluid coupling 541. That is, the viscosity of the magnetorheological fluid increases due to the increase in electromagnetic intensity, thereby increasing the bonding strength between the main support shaft 54 ​​and the slave support shaft 542, thereby improving the slave support shaft 541. 42 and the rotation speed of the pressing plate 56 increase the amount of cleaning liquid flowing out of the water storage bag 62 through the water outlet pipe 63, and more cleaning liquid falls onto the surface of the battery panel body 1. At the same time, as the magnetic field strength increases, the repulsive force between the corresponding two magnets 47 increases, and the cleaning bristles 48 move outward, so that the cleaning force of the cleaning bristles 48 on the surface of the battery panel body 1 increases when the cleaning bristles 48 rotate. Afterwards, as the power of the movement of the fixing rod 52 is greater than the resistance of the stain to the scraper 75, the scraper 75 passes over the stain, and the sliding plate 73 and the adjusting rod 74 also move to the direction of the scraper 75 under the action of the elastic force of the spring 72 to reset.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solar panel protection device, comprising a panel body (1), characterized in that: It also comprises fixing plates (2) symmetrically fixedly mounted on both sides of the battery panel body (1), a connecting plate (3) being fixedly mounted on one side of the two fixing plates (2), a driving assembly (4) being arranged on the top of one of the fixing plates (2), and a pressing assembly (5) and a water storage assembly (6) being transmission-connected to the pressing assembly (5) being arranged on the top of one end of the battery panel body (1) and the fixing plate (2) close to the connecting plate (3); The pressing assembly (5) comprises two support plates (51) respectively symmetrically and slidably mounted on the top of the fixed plate (2); a fixing rod (52) is fixedly mounted on the top of the two support plates (51); a plurality of pairs of main support shafts (54) are rotatably mounted on the top of the fixing rod (52); the fixing rod (52) is transmission-connected to the main support shafts (54); the bottom end of the main support shaft (54) passes through the top wall of the fixing rod (52) and is fixedly mounted with a magnetorheological fluid coupling (541); a slave support shaft (542) is fixedly mounted on the output end of the magnetorheological fluid coupling (541); and a pressing plate (56) is fixedly mounted on the bottom end of the slave support shaft (542); The water storage assembly (6) comprises a plurality of installation cavities (61) opened inside the fixing rod (52), a plurality of pairs of pressing plates (56) are respectively contained in corresponding installation cavities (61), a water storage bag (62) is fixedly installed inside the installation cavity (61), the plurality of pairs of pressing plates (56) are placed on one side of the water storage bag (62), a plurality of water outlet pipes (63) are fixedly connected to the bottom of the water storage bag (62), and the bottom ends of the water outlet pipes (63) penetrate the bottom wall of the fixing rod (52); An adjusting component (7) for adjusting the rotation speed of the slave support shaft (542) is provided on a side of the fixing rod (52) away from the connecting plate (3), and a water injection component (8) for conveying cleaning liquid to the water storage bag (62) is provided on the top of the connecting plate (3); The adjustment assembly (7) comprises a plurality of mounting grooves (71) formed on a side of the fixing rod (52) away from the connecting plate (3), the mounting grooves (71) corresponding to the mounting cavities (61) in position, a sliding rheostat being arranged in the inner wall of the mounting groove (71), the sliding rheostat comprising a sliding piece (73) slidably mounted inside the mounting groove (71), the sliding piece (73) being limitedly slidably arranged in the mounting groove (71), a spring (72) being fixedly connected between the sliding piece (73) and the inner wall of the mounting groove (71), the sliding piece (73) being away from the spring ( An adjusting rod (74) is fixedly mounted on one end of the adjusting rod (74), and a scraper (75) is fixedly mounted on one end of the adjusting rod (74) away from the sliding plate (73). The scraper (75) is made of aluminum alloy. There is a gap between the bottom of the scraper (75) and the upper surface of the solar panel body (1). The sliding rheostat is electrically connected to a DC power supply and constitutes a transmission ratio circuit. When the sliding plate (73) slides toward the scraper (75), the resistance of the sliding rheostat in the transmission ratio circuit increases, thereby affecting the state of the magnetorheological fluid inside the magnetorheological fluid coupling (541).

2. A solar panel protection device according to claim 1, characterized in that: The driving assembly (4) comprises a motor (41) slidably mounted on the top side of one of the fixed plates (2); a main shaft (42) is fixedly mounted on the output end of the motor (41); a gear (43) is fixedly mounted on the outer side of the main shaft (42); and a rack (44) meshing with the gear (43) is fixedly mounted on the top of the corresponding fixed plate (2).

3. A solar panel protection device according to claim 2, characterized in that: The end of the main rotating shaft (42) away from the motor (41) is fixedly connected to a gearbox (45), and the output end of the gearbox (45) is fixedly mounted with a slave rotating shaft (46), the slave rotating shaft (46) passes through two support plates (51) and is rotatably connected thereto, and the slave rotating shaft (46) is placed below the fixed rod (52), and the interior of the slave rotating shaft (46) is provided with mounting grooves corresponding to the mounting cavities (61), and a pair of magnets (47) with magnetic repulsion are symmetrically arranged inside the mounting grooves, and a plurality of cleaning bristles (48) are fixedly mounted on the side away from each other of each pair of magnets (47), and the end of the cleaning bristles (48) away from the magnets (47) passes through the side wall of the slave rotating shaft (46).

4. A solar panel protection device according to claim 1, characterized in that: A worm (53) is rotatably mounted on the top of the fixed rod (52), the worm (53) is drivingly connected to the driving assembly (4), and a worm wheel (55) meshing with the worm (53) is fixedly mounted on the outer side of the main support shaft (54).

5. A solar panel protection device according to claim 1, characterized in that: The water injection assembly (8) comprises a water storage tank (81) fixedly mounted on the top of the connecting plate (3); a water pump (811) is fixedly mounted on the top of the water storage tank (81); a water delivery pipe (84) is fixedly connected to one side of the water storage tank (81) close to the fixing rod (52); the water delivery pipe (84) is respectively connected to each water storage bag (62) through a plurality of connecting pipes (85); a one-way valve that can only deliver water in the direction of the water storage bag (62) is fixedly mounted inside the connecting pipe (85).

6. A solar panel protection device according to claim 5, characterized in that: The top of the water storage tank (81) is fixedly connected to a water inlet pipe (82), and a filter screen (83) is fixedly installed on the top of the water inlet pipe (82).

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