Photovoltaic support with anti-shielding function

Abstract

The invention relates to the field of photovoltaic supports, in particular to a photovoltaic support with an anti-shielding function, and the photovoltaic support comprises a protection unit which sleeves the periphery of a photovoltaic panel. The protection unit comprises a protection net rotationally arranged on the periphery of the photovoltaic panel in a sleeving mode, barbs are evenly arranged on the periphery of the protection net, the barbs located above the photovoltaic panel incline downwards, gaps exist between photovoltaic modules in the photovoltaic panel, a net-shaped structure is formed on the photovoltaic panel, the protection net has a cleaning mode and a protection mode, and in the protection mode, the cleaning mode can be used for cleaning the photovoltaic modules. In the cleaning mode, the protection net does not rotate, the projection, formed on the upper surface of the photovoltaic panel in the sunlight projection direction, of the protection net coincides with the net-shaped structure, and in the cleaning mode, the protection net rotates in the barb inclination direction. The situation that a traditional plastic bag or plastic film is adsorbed on a photovoltaic panel after being mixed with water stains and is difficult to clean is avoided, and the workload of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic brackets, and in particular to a photovoltaic bracket with an anti-shielding function. Background Art

[0002] On rainy days, rainwater carrying impurities and dust often drips onto the surface of photovoltaic panels. On windy days, nearby leaves will be blown onto the surface of photovoltaic panels, and some lighter objects (such as plastic bags) will be blown into the air and easily fall on the surface. Because water has a certain adsorption capacity, objects such as leaves and plastic bags are adsorbed by water when they are scraped onto the surface of photovoltaic panels and are not easy to fall off. In addition, the fallen leaves will block the inside of the diversion trough, affecting the drainage of rainwater.

[0003] Chinese patent publication No. CN219980749U discloses a photovoltaic bracket with a diversion structure, including a bracket body, guide grooves for diverting rainwater are arranged at both ends of the top of the bracket body, and a guide plate for diverting rainwater from the photovoltaic panel is arranged at the top front end of the bracket body, and swing structures for shaking off fallen leaves are arranged at both ends of the guide plate, a filter net for filtering impurities in rainwater and fallen leaves is arranged inside the guide groove, and a cleaning structure for cleaning fallen leaves and impurities is arranged on the top of the filter net; the cleaning structure includes a cleaning brush arranged on the top of the filter net, and a connecting rod is arranged on the top of the cleaning brush, and a screw rod is arranged at the left end of the connecting rod, and a motor is arranged on the top of the screw rod.

[0004] The above scheme realizes the cleaning work on the surface of the photovoltaic panel by arranging a cleaning brush on the upper part of the photovoltaic panel. The cleaning brush can ensure the cleaning effect of dust and rainwater, but cannot ensure that the plastic bags or leaves attached to the photovoltaic panel are cleaned off. In order to overcome the above problems, the above scheme also arranges a scraper, but the surface of the photovoltaic panel is not completely horizontal. The existing photovoltaic panels are basically modularly designed, that is, the photovoltaic panel is composed of a plurality of photovoltaic module arrays, and there are gaps between adjacent photovoltaic modules. The scraper cannot pass through the gaps smoothly while ensuring the scraping effect. In the prior art, in order to prevent the surface of the photovoltaic panel from being blocked by external objects, a rotating transparent film is also arranged on the photovoltaic bracket. The transparent film is sleeved on the periphery of the photovoltaic panel, and the photovoltaic panel is isolated from the outside world by the transparent film, so that the surface of the photovoltaic panel is clean enough. However, after being used for a period of time, the transparency of the transparent film will decrease and water vapor will appear inside, which will also affect the electrical conversion efficiency of the photovoltaic panel.

[0005] At the same time, photovoltaic brackets are mostly installed in places far away from cities, but farmers use a lot of plastic film or plastic bags for planting and surrounding operations, which will be blown up by wind. Due to the large number of photovoltaic brackets, it is not easy to detect when individual photovoltaic brackets are blocked by plastic bags, which requires a lot of time to patrol and consumes a lot of manpower. Summary of the invention

[0006] In view of the above problems, a photovoltaic bracket with an anti-shielding function is provided. The present invention provides a protective net with barbs, and enables the protective net to have a cleaning mode and a protective mode. In the protective mode, the protective net does not rotate, and the projection of the protective net on the upper surface of the photovoltaic panel along the direction of sunlight projection coincides with the mesh structure. In the cleaning mode, the protective net rotates in the inclination direction of the barbs, so that large pieces of plastic bags or plastic films are not easily completely adhered to the photovoltaic panel after mixing with water stains. At the same time, since the protective net is provided with barbs, even if part of the plastic belt or plastic film passes through the mesh of the protective net and adheres to the photovoltaic panel, when the protective net rotates, the barbs can smoothly take the plastic bag or plastic film away, thereby completing the autonomous cleaning of the plastic bag or plastic film, avoiding the situation where traditional plastic bags or plastic films are adsorbed on the photovoltaic panel after mixing with water stains and are difficult to clean, and reducing the workload of the staff.

[0007] In order to solve the problems of the prior art, the present invention provides a photovoltaic bracket with an anti-shielding function, including a protection unit mounted on the periphery of a photovoltaic panel; the protection unit includes a protection net rotatably mounted on the periphery of the photovoltaic panel, the periphery of the protection net is evenly provided with barbs, the barbs located above the photovoltaic panel are inclined downward, there are gaps between the photovoltaic modules in the photovoltaic panel and a mesh structure is formed on the photovoltaic panel, the protection net has a cleaning mode and a protection mode, in the protection mode, the protection net does not rotate, the projection formed by the protection net on the upper surface of the photovoltaic panel along the direction of sunlight projection coincides with the mesh structure, and in the cleaning mode, the barbs can hook the plastic film and take it away to the outside of the photovoltaic panel when the protection net rotates.

[0008] Preferably, a cleaning unit for cleaning the surface of the photovoltaic panel is provided on one side of the inner ring of the protective net, and the cleaning unit comprises a cleaning roller moving along the width direction of the photovoltaic panel.

[0009] Preferably, a driving belt for driving the protective net to rotate is provided at one end of the protective net, a notch is provided on the inner ring side wall of the driving belt, a follower seat is provided at the end of the cleaning roller, and a clamping rod that can be clamped with the notch is provided on the follower seat.

[0010] Preferably, a clamping ring is provided on the follower seat for rotation along the axis of the cleaning roller, and inclined spring pieces are evenly provided on the inner ring side wall of the clamping ring. A ratchet fixedly connected to the end of the cleaning roller is also provided in the inner ring of the clamping ring, and the ratchet cooperates with the spring piece for unidirectional rotation, and the clamping rod is fixedly provided on the outer peripheral wall of the clamping ring.

[0011] Preferably, a drying roller is provided at the front end of the cleaning roller when cleaning, and the drying roller is rotatably arranged on the follower seat. When the clamping rod is engaged with the notch, the drying roller does not contact the surface of the photovoltaic panel. When the clamping rod is disengaged from the notch, the drying roller rolls with the surface of the photovoltaic panel.

[0012] Preferably, a transmission assembly is provided between the drying roller and the clamping ring, the transmission assembly includes a lifting frame which is movably arranged on the follower seat along the height direction of the follower seat, the lifting frame passes through the follower seat and is connected to the drying roller, an extension rod is fixedly arranged on the lifting frame along the moving direction of the follower seat, a sliding groove is provided on the lifting frame, and an extension column which slides with the sliding groove is provided at the end of the clamping ring.

[0013] Preferably, a traction rope is provided at the end of the follower seat, and a weight that moves in the vertical direction is fixedly provided at one end of the traction rope away from the follower seat.

[0014] Preferably, a receiving groove is provided at the lowest position of the photovoltaic panel along the length direction of the photovoltaic panel, and the receiving groove is located in the inner ring of the protective net.

[0015] Preferably, a scraper is movably arranged in the receiving groove along the extension direction of the receiving groove, and a screw rod is penetrated through the scraper along the extension direction of the receiving groove, and the screw rod cooperates with the scraper thread.

[0016] Preferably, a plurality of synchronous wheels are provided on one side of the follower seat, and the synchronous wheels are arranged in a polygonal structure. The outer sleeve of the synchronous wheel is provided with a synchronous belt that is transmitted and matched with all the synchronous wheels. A first gear is provided at the end of one of the synchronous wheels, and a second gear that meshes with the first gear is provided at the end of the screw rod, and the follower seat is fixedly connected to the synchronous belt.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a protective net with barbs, and enables the protective net to have a cleaning mode and a protective mode. In the protective mode, the protective net does not rotate, and the projection of the protective net on the upper surface of the photovoltaic panel along the direction of sunlight projection coincides with the mesh structure. In the cleaning mode, the protective net rotates in the inclination direction of the barbs, so that large pieces of plastic bags or plastic films are not easily completely adhered to the photovoltaic panel after mixing with water stains. At the same time, since the protective net is provided with barbs, even if part of the plastic belt or plastic film passes through the mesh of the protective net and adheres to the photovoltaic panel, when the protective net rotates, the barbs can smoothly take the plastic bag or plastic film away, thereby completing the autonomous cleaning of the plastic bag or plastic film, avoiding the situation in which traditional plastic bags or plastic films are adsorbed on the photovoltaic panel after mixing with water stains and are difficult to clean, and reducing the workload of the staff.

[0019] 2. By setting a cleaning roller and a drying roller, the cleaning roller first cleans the dust on the surface of the photovoltaic panel, and then the drying roller wipes the remaining water stains. When the follower seat is reset, the drying roller can wipe the water stains remaining on the photovoltaic panel, avoiding the water stains remaining on the photovoltaic panel. When the cleaning roller cleans the photovoltaic panel, the drying roller at the front end of the cleaning roller will not contact the surface of the photovoltaic panel, avoiding the dust on the photovoltaic panel from polluting the cleaning roller, further improving the cleaning effect of the dust on the surface of the photovoltaic panel. At the same time, by setting a spring piece in the clamping ring and cooperating with the ratchet wheel to rotate unidirectionally, it is ensured that the clamping rod and the notch are stably matched when the cleaning roller is cleaning, and the cleaning roller can rotate smoothly. At the same time, after the cleaning roller completes cleaning, the ratchet rotates in the opposite direction, and the ratchet is locked with the spring piece, so that the clamping ring rotates in the opposite direction, ensuring that the clamping rod can be smoothly separated from the notch after the cleaning roller completes cleaning.

[0020] 3. By setting up a transmission component, the clamping ring can also synchronously drive the lifting frame to move through the transmission component during the process of driving the clamping rod to engage with the notch or disengage the clamping rod, so that the drying roller will not contact the photovoltaic panel when the cleaning roller cleans the photovoltaic panel. The drying roller will contact the photovoltaic panel only after the cleaning roller finishes cleaning the photovoltaic panel. This avoids the drying roller from being contaminated by sewage and also avoids water stains on the photovoltaic panel after cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional schematic diagram of a photovoltaic bracket with anti-shielding function of the present invention. Figure 1 .

[0022] Figure 2 The invention discloses a photovoltaic support with anti-shielding function. Figure 1 A local enlarged schematic diagram of point A in the middle.

[0023] Figure 3 The invention discloses a photovoltaic support with anti-shielding function. Figure 1 A local enlarged schematic diagram of point B in the middle.

[0024] Figure 4 This is a three-dimensional schematic diagram of a photovoltaic bracket with anti-shielding function of the present invention. Figure 2 .

[0025] Figure 5 It is a side view of a photovoltaic support with anti-shielding function according to the present invention.

[0026] Figure 6 The invention discloses a photovoltaic support with anti-shielding function. Figure 5 Schematic cross-sectional view at CC in the middle.

[0027] Figure 7It is a cutaway stereoscopic schematic diagram of a photovoltaic support with an anti-shielding function according to the present invention.

[0028] Figure 8 The invention discloses a photovoltaic support with anti-shielding function. Figure 7 A partial enlarged schematic diagram of point D in the middle.

[0029] Fig. 9 The invention discloses a photovoltaic support with anti-shielding function. Figure 7 A partial enlarged schematic diagram of point E in the middle.

[0030] Fig.10 It is a three-dimensional schematic diagram of a photovoltaic bracket with an anti-shielding function of the present invention, in which a mounting frame is removed and the direction of water flow for cleaning photovoltaic panels is marked.

[0031] Fig.11 It is a three-dimensional schematic diagram of a cleaning unit of a photovoltaic support with an anti-shielding function of the present invention, with a cleaning roller and a drying roller removed.

[0032] Fig.12 The invention discloses a photovoltaic support with anti-shielding function. Fig.11 A partial enlarged schematic diagram of point F in the middle.

[0033] Fig.13 It is a three-dimensional schematic diagram of a cleaning unit of a photovoltaic support with an anti-shielding function of the present invention, with a transmission component, a drying roller and a cleaning roller removed.

[0034] The numbers in the figure are: 1. Protection unit; 11. Protection net; 111. Barb; 12. Drive belt; 121. Notch; 13. Drive wheel; 14. First rotary drive; 2. Photovoltaic panel; 3. Mounting frame; 31. Adjustment unit; 4. Cleaning unit; 41. Cleaning roller; 42. Water spray box; 43. Follower seat; 431. Weight; 432. Traction rope; 433. Receiver wheel; 44. Snap-on rod; 45. Snap-on ring; 451. Shrapnel; 46. Ratchet; 47. Second rotary drive; 48. Drying roller; 49. Transmission assembly; 491. Lifting frame; 492. Extension rod; 4921. Slide; 493. Extension column; 5. Receiver groove; 51. Scraper; 52. Screw rod; 53. Synchronous wheel; 54. Synchronous belt; 55. First gear; 56. Second gear. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Reference Figure 1 , Figure 2 and Figure 4 : A photovoltaic bracket with an anti-shielding function, comprising a protection unit 1 mounted on the periphery of a photovoltaic panel 2; the protection unit 1 comprises a protection net 11 rotatably mounted on the periphery of the photovoltaic panel 2, the periphery of the protection net 11 is evenly provided with barbs 111, the barbs 111 located above the photovoltaic panel 2 are inclined downward, there are gaps between the photovoltaic modules in the photovoltaic panel 2 and a mesh structure is formed on the photovoltaic panel 2, the protection net 11 has a cleaning mode and a protection mode, in the protection mode, the protection net 11 does not rotate, the projection formed by the protection net 11 on the upper surface of the photovoltaic panel 2 along the direction of sunlight projection coincides with the mesh structure, in the cleaning mode, the barbs 111 can hook the plastic film and take it away to the outside of the photovoltaic panel 2 when the protection net 11 rotates.

[0037] Existing photovoltaic brackets include fixed type and light-chasing type. The fixed photovoltaic bracket has a simple structure, and the angle of the photovoltaic panel 2 set on the photovoltaic bracket is fixed, and it cannot change the angle with the change of sunlight; the light-chasing type photovoltaic bracket has a more complex structure, but it can automatically track the sunlight, so that the sunlight is always perpendicular to the photovoltaic panel 2, which improves the power conversion efficiency of the photovoltaic panel 2. The ordinary fixed photovoltaic bracket includes a mounting frame 3 for supporting the photovoltaic panel 2, and the light-chasing type photovoltaic bracket is also equipped with an adjustment unit 31 and a photovoltaic tracker. The photovoltaic tracker tracks the light projected by the sun, and then after being processed by the processor, the adjustment unit 31 adjusts the angle of the mounting frame 3, so that the angle between the surface of the photovoltaic panel 2 set on the mounting frame 3 and the projected sunlight is 90 degrees.

[0038] However, no matter which type of photovoltaic bracket is used, the upper surface of the photovoltaic panel 2 may be blocked by debris during use, such as leaves, dust, plastic film, plastic bags, etc. Most of the existing photovoltaic brackets with self-cleaning function are mainly used for dust cleaning, and have a certain cleaning ability for leaves, but cannot prevent plastic film or plastic bags from sticking to the photovoltaic panel 2. This is because the plastic film or plastic bag itself is relatively thin, and the water stains on the photovoltaic panel 2 cause large pieces of plastic film or plastic bags to stick to the photovoltaic panel 2 and are difficult to clean, seriously affecting the normal operation of the photovoltaic panel 2. In order to avoid the above situation, the existing solution is to add a rotating transparent film on the outside of the photovoltaic panel 2, so that dust, leaves, plastic film, plastic bags, etc. all fall on the transparent film, and the debris accumulated on the transparent film is discharged by the timed rotation of the transparent film. A visual system can also be installed as needed to monitor the debris on the transparent film, so that the transparent film can clean the debris in real time. However, after a period of use, the transparency of the transparent film will decrease, resulting in most of the sunlight being isolated by the transparent film, which in turn leads to a decrease in the electrical conversion efficiency of the photovoltaic panel 2, and the inner ring side wall of the transparent film is prone to condensation of water droplets during use, which will also hinder sunlight.

[0039] In order to avoid the above situation, the protection unit 1 of the photovoltaic bracket is redesigned so that the protection unit 1 will not affect the electricity conversion efficiency of the photovoltaic panel 2 due to the passage of time during the protection of the photovoltaic panel 2. The specific structure and working process of the protection unit 1 are as follows: The photovoltaic bracket of the present invention is a tracking bracket by default. When in use, the working time of the two modes of the protective net 11 can be preset. The protective net 11 is installed with a preset working time to switch between the two modes. When the protective net 11 is in the protection mode, the projection of the protective net 11 on the photovoltaic panel 2 coincides with the mesh structure on the photovoltaic panel 2. At this time, the protective net 11 will not block the photovoltaic panel 2, thereby ensuring that the photovoltaic panel 2 can work normally. Since the photovoltaic panel 2 is composed of a plurality of photovoltaic module arrays, and the projection on the photovoltaic panel 2 coincides with the mesh structure on the photovoltaic panel 2, the existing single photovoltaic module is small in size, so the mesh of the protective net 11 will not be too large, ensuring that the plastic bag can be hooked by the barbs on the protective net 11 before falling onto the photovoltaic panel 2. When large pieces of plastic film or plastic bags from the outside are blown above the photovoltaic panel 2, they will be intercepted by the protective net 11, and the plastic bags or plastic films will be hung on the protective net 11, thereby avoiding large pieces of plastic bags or plastic films from falling directly on the upper surface of the photovoltaic panel 2, thereby reducing the difficulty of cleaning. When the protective net 11 is switched to the cleaning mode, the protective net 11 rotates. Since the outer periphery of the protective net 11 is evenly provided with barbs 111, even if there are water stains on the surface of the photovoltaic panel 2 and the plastic bag or plastic film partially passes through the mesh of the protective net 11 and contacts the surface of the photovoltaic panel 2, the rotating protective net 11 can hook the large piece of plastic film or plastic bag through the barbs 111 and take the plastic bag or plastic film away from the photovoltaic panel 2, thereby completing the autonomous cleaning of the plastic bag or plastic film, avoiding the situation where traditional plastic bags or plastic films are adsorbed on the photovoltaic panel 2 after mixing with water stains and are difficult to clean, thereby reducing the workload of the staff.

[0040] The present invention is applicable to all photovoltaic brackets, and is more effectively used in light-chasing photovoltaic brackets. This is because light-chasing photovoltaic brackets can drive photovoltaics to continuously chase light, so that sunlight can be projected vertically onto the photovoltaic panel 2, ensuring that in the protection mode, the projection of the protection net 11 on the photovoltaic panel 2 can overlap with the mesh structure of the photovoltaic panel 2 itself, so that the electrical conversion efficiency of the photovoltaic panel 2 is higher.

[0041] Reference Figure 7 and Fig. 9 A cleaning unit 4 for cleaning the surface of the photovoltaic panel 2 is arranged on one side of the inner ring of the protective net 11 , and the cleaning unit 4 includes a cleaning roller 41 moving along the width direction of the photovoltaic panel 2 .

[0042] A water spray box 42 is provided above the mounting frame 3. The water spray box 42 is used to spray clean water onto the upper surface of the mounting frame 3. The clean water flows from the mounting frame 3 to the photovoltaic panel 2 under the action of gravity, and the surface of the photovoltaic panel 2 is cleaned under the action of the cleaning roller 41. When the cleaning unit 4 cleans the photovoltaic panel 2 at night, the cleaning time of the cleaning unit 4 can be preset in advance, so as to avoid affecting the normal operation of the photovoltaic panel 2 when the cleaning unit 4 cleans the photovoltaic panel 2.

[0043] Reference Fig.11 and Fig.12 A driving belt 12 for driving the protective net 11 to rotate is arranged at one end of the protective net 11, a notch 121 is opened on the inner ring side wall of the driving belt 12, a follower seat 43 is arranged at the end of the cleaning roller 41, and a clamping rod 44 that can be clamped with the notch 121 is arranged on the follower seat 43.

[0044] Two driving wheels 13 are arranged in the driving belt 12 along the width direction of the mounting frame 3. The driving belt 12 is sleeved on the two driving wheels 13 and cooperates with the two driving wheels 13 in transmission. The driving belt 12 is built with a circular steel wire (not shown in the figure) to prevent the driving belt 12 from breaking during the process of driving the follower seat 43 to move after being connected with the connecting rod 44 through the notch 121. A first rotating driver 14 is provided at the end of one of the driving wheels 13. The first rotating driver 14 is preferably a servo motor. The cleaning roller 41 moves along the photovoltaic panel 2 When the belt 12 is moved in the width direction, no additional driving method is required. When cleaning at night, the driving wheel 13 is driven by the first rotary driver 14, so that the driving belt 12 rotates. At this time, the clamping rod 44 arranged on the follower seat 43 is lifted, and when the notch 121 on the driving belt 12 passes the position of the clamping rod 44, the clamping rod 44 is clamped into the notch 121. In this way, when the driving belt 12 continues to rotate, the driving belt 12 can push the follower seat 43 to move synchronously through the notch 121 and the clamping rod 44, thereby reducing the subsequent maintenance cost.

[0045] Reference Fig.12 and Fig.13 : A clamping ring 45 is rotatably provided on the follower seat 43 along the axis of the cleaning roller 41, and inclined spring pieces 451 are evenly provided on the inner ring side wall of the clamping ring 45. A ratchet 46 fixedly connected to the end of the cleaning roller 41 is also provided in the inner ring of the clamping ring 45, and the ratchet 46 cooperates with the spring piece 451 for unidirectional rotation. The clamping rod 44 is fixedly provided on the outer peripheral wall of the clamping ring 45.

[0046] In order to improve the cleaning effect of the cleaning roller 41, the photovoltaic panel 2 is tilted in the width direction of the photovoltaic panel 2. When the cleaning roller 41 moves along the width direction of the photovoltaic panel 2, the cleaning roller 41 rotates around its own axis, which not only avoids the wear of the cleaning roller 41 when cleaning the photovoltaic panel 2 at the same position, but also improves the cleaning effect. A second rotation driver 47 for driving the ratchet 46 to rotate is provided at the end of the ratchet 46, and the second rotation driver 47 is preferably a servo motor. When the cleaning unit 4 is not running, the extension direction of the clamping rod 44 is parallel to the width direction of the photovoltaic panel 2. At this time, when the driving belt 12 rotates, the clamping rod 44 will not be clamped with the notch 121 on the driving belt 12. When it is at night, the cleaning unit 4 is started. First, the second rotary driver 47 drives the ratchet 46 to rotate, so that the ratchet 46 squeezes the spring piece 451, and then the spring piece 451 drives the clamping ring 45 to rotate, so that the clamping rod 44 on the clamping ring 45 is lifted. At this time, the first rotary driver 14 is started, and the driving belt 12 starts to rotate. When the notch 121 on the driving belt 12 passes the position of the clamping rod 44, the clamping rod 44 is clamped. After entering the gap 121, the driving belt 12 can then drive the follower seat 43 to move along the width direction of the photovoltaic panel 2. At this time, the second rotary driver 47 continues to run. Since the clamping rod 44 has been clamped into the gap 121, the clamping rod 44 cannot be lifted and the clamping ring 45 cannot rotate. At this time, the ratchet 46 that continues to rotate can completely press the spring piece 451. The ratchet 46 overcomes the elastic force of the spring piece 451 and drives the cleaning roller 41 to rotate normally in the clamping ring 45. In this way, the clamping rod 44 can be smoothly clamped with the gap 121. At the same time, after the clamping rod 44 is clamped with the gap 121, the cleaning roller 41 can still be in a normal rotation state, thereby ensuring the cleaning effect.

[0047] Reference Figure 6 and Fig.10 : A drying roller 48 is provided at the front end of the cleaning roller 41 when cleaning. The drying roller 48 is rotatably set on the follower seat 43. When the clamping rod 44 is clamped with the notch 121, the drying roller 48 does not contact the surface of the photovoltaic panel 2. When the clamping rod 44 is disengaged from the notch 121, the drying roller 48 rolls with the surface of the photovoltaic panel 2.

[0048] When the cleaning roller 41 cleans the photovoltaic panel 2 from top to bottom, the dust cleaned from the photovoltaic panel 2 moves to the lowest point of the photovoltaic panel 2 under the action of the water flow. When the cleaning roller 41 moves to the lowest point of the photovoltaic panel 2, the cleaning of the photovoltaic panel 2 is completed. At this time, there are still water stains on the photovoltaic panel 2. If the water stains are not wiped off, the dust will mix with the water stains, resulting in mud spots on the surface of the photovoltaic panel 2, which will make it more difficult to clean. When the cleaning roller 41 moves to the lowest position of the photovoltaic panel 2, the clamping rod 44 is disengaged from the notch 121 on the driving belt 12, and the follower seat 43 drives the cleaning roller 41 to reset, and the drying roller 48 contacts the surface of the photovoltaic panel 2 and rolls with the photovoltaic panel 2 during the resetting process of the follower seat 43. When the reset of the follower seat 43 is completed, the drying roller 48 can wipe off the water stains remaining on the photovoltaic panel 2, thereby avoiding the water stains remaining on the photovoltaic panel 2. When the cleaning roller 41 cleans the photovoltaic panel 2, the drying roller 48 located at the front end of the cleaning roller 41 will not contact the surface of the photovoltaic panel 2, thereby avoiding the contamination of the cleaning roller 41 by dust on the photovoltaic panel 2, thereby further improving the cleaning effect of the dust on the surface of the photovoltaic panel 2.

[0049] Reference Fig.12 and Fig.13 A transmission assembly 49 is provided between the drying roller 48 and the clamping ring 45. The transmission assembly 49 includes a lifting frame 491 which is movably arranged on the follower seat 43 along the height direction of the follower seat 43. The lifting frame 491 passes through the follower seat 43 and is connected with the drying roller 48. An extension rod 492 is fixedly arranged on the lifting frame 491 along the moving direction of the follower seat 43. A sliding groove 4921 is provided on the lifting frame 491. An extension column 493 which slidably cooperates with the sliding groove 4921 is provided at the end of the clamping ring 45.

[0050] When the clamping ring 45 drives the clamping rod 44 to rise, the extension column 493 arranged at the end of the clamping ring 45 rises synchronously along the height direction of the follower seat 43, so that the extension column 493 drives the extension rod 492 to rise along the height direction of the follower seat 43 through the slide groove 4921, and finally the lifting frame 491 drives the drying roller 48 to disengage from the surface of the photovoltaic panel 2; when the cleaning roller 41 moves to the lowest position of the photovoltaic panel 2, the cleaning roller 41 completes the cleaning of the photovoltaic panel 2, and the second rotary drive 47 drives the clamping ring 45 to rotate in the opposite direction through the ratchet 46, so that the clamping rod 44 is disengaged from the notch 121, the clamping rod 44 descends, and the lifting frame 491 also drives the drying roller 48 to descend, so that in the process of the cleaning roller 41 following the follower seat 43 to reset, the drying roller 48 can clean the surface of the photovoltaic panel 2.

[0051] Reference Figure 4-Figure 6 and Fig.11 A traction rope 432 is provided at the end of the follower seat 43, and a weight 431 that moves in the vertical direction is fixedly provided at one end of the traction rope 432 away from the follower seat 43.

[0052] A receiving wheel 433 is rotatably provided below the traction rope 432 , and the traction rope 432 is wound around the upper portion of the receiving wheel 433 . When the engaging rod 44 is disengaged from the notch 121 , the weight 431 pulls and resets the follower seat 43 through the traction rope 432 .

[0053] Reference Figure 7 and Figure 8 : A receiving groove 5 is arranged at the lowest position of the photovoltaic panel 2 along the length direction of the photovoltaic panel 2, and the receiving groove 5 is located in the inner ring of the protective net 11.

[0054] When the photovoltaic panel 2 is cleaned by the cleaning unit 4, dust and water are mixed to form sewage, and the sewage flowing down is received by the receiving groove 5 to prevent the sewage from flowing onto the protective net 11 and sticking to the protective net 11. After the protective net 11 rotates one circle, the sewage remaining on the protective net 11 will fall on the photovoltaic panel 2 again, resulting in a reduction in the cleaning effect of the cleaning unit 4. After the receiving groove 5 is set, the above situation can be avoided. After the sewage flows into the receiving groove 5, the receiving groove 5 will drain the sewage to the two ends of the protective net 11 and discharge it.

[0055] Reference Figure 7 and Figure 8 A scraper 51 is movably arranged in the receiving groove 5 along the extending direction of the receiving groove 5 , and a screw rod 52 is penetrated on the scraper 51 along the extending direction of the receiving groove 5 , and the screw rod 52 is threadedly matched with the scraper 51 .

[0056] When the receiving tank 5 receives sewage for a long time, a large amount of sludge will inevitably accumulate at the bottom of the receiving tank 5. If the sludge is not cleaned for a long time, the receiving tank 5 will be filled with sludge and the sewage cannot be normally received and drained. The scraper 51 moves back and forth in the receiving tank 5 so that the sludge accumulated in the receiving tank 5 can be discharged in time.

[0057] Reference Figure 3 and Fig.10 : A plurality of synchronous wheels 53 are arranged on one side of the follower seat 43. The synchronous wheels 53 are arranged in a polygonal structure. The outer sleeve of the synchronous wheel 53 is provided with a synchronous belt 54 that is transmitted and matched with all the synchronous wheels 53. A first gear 55 is arranged at the end of one of the synchronous wheels 53, and a second gear 56 that meshes with the first gear 55 is arranged at the end of the screw rod 52. The follower seat 43 is fixedly connected to the synchronous belt 54.

[0058] In this way, when the follower seat 43 moves, the follower seat 43 can drive the synchronous belt 54 to rotate, thereby causing all the synchronous wheels 53 to rotate. The first gear 55 rotates under the drive of the synchronous wheels 53 and drives the second gear 56, thereby causing the screw rod 52 to rotate. It is worth noting that in order to increase the rotation speed of the screw rod 52, the diameter of the first gear 55 is greater than the diameter of the second gear 56.

[0059] Working principle: When in use, the working time of the two modes of the protective net 11 can be preset. The protective net 11 is installed with a preset working time to switch between the two modes. When the protective net 11 is in the protection mode, the projection of the protective net 11 on the photovoltaic panel 2 coincides with the mesh structure on the photovoltaic panel 2. At this time, the protective net 11 will not block the photovoltaic panel 2, thereby ensuring that the photovoltaic panel 2 can work normally. Since the photovoltaic panel 2 is composed of a plurality of photovoltaic module arrays, and the projection on the photovoltaic panel 2 coincides with the mesh structure on the photovoltaic panel 2, the mesh of the protective net 11 will not be too large. When large pieces of plastic film or plastic bags from the outside are blown above the photovoltaic panel 2, they will be intercepted by the protective net 11, and the plastic bags or plastic films will be hung on the protective net 11, thereby preventing large pieces of plastic bags or plastic films from falling directly on the upper surface of the photovoltaic panel 2, thereby reducing the difficulty of cleaning. When the protective net 11 is switched to the cleaning mode, the protective net 11 rotates. Since the outer periphery of the protective net 11 is evenly provided with barbs 111, even if there are water stains on the surface of the photovoltaic panel 2 and the plastic bag or plastic film partially passes through the mesh of the protective net 11 and contacts the surface of the photovoltaic panel 2, the rotating protective net 11 can hook the large piece of plastic film or plastic bag through the barbs 111 and take the plastic bag or plastic film away from the photovoltaic panel 2, thereby completing the autonomous cleaning of the plastic bag or plastic film, avoiding the situation where traditional plastic bags or plastic films are adsorbed on the photovoltaic panel 2 after mixing with water stains and are difficult to clean, thereby reducing the workload of the staff.

[0060] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A photovoltaic support with an anti-shielding function, comprising a protection unit (1) sleeved on the periphery of a photovoltaic panel (2); It is characterized in that The protection unit (1) comprises a protection net (11) rotatably mounted on the periphery of a photovoltaic panel (2); barbs (111) are evenly arranged on the periphery of the protection net (11); the barbs (111) located above the photovoltaic panel (2) are inclined downward; gaps exist between photovoltaic modules in the photovoltaic panel (2) and a mesh structure is formed on the photovoltaic panel (2); the protection net (11) has a cleaning mode and a protection mode; in the protection mode, the protection net (11) does not rotate; a projection formed by the protection net (11) on the upper surface of the photovoltaic panel (2) along the direction of sunlight projection coincides with the mesh structure; in the cleaning mode, the barbs (111) can hook the plastic film and take it away from the photovoltaic panel (2) when the protection net (11) rotates.

2. A photovoltaic support with anti-shielding function according to claim 1, characterized in that: A cleaning unit (4) for cleaning the surface of the photovoltaic panel (2) is arranged on one side of the inner ring of the protective net (11), and the cleaning unit (4) comprises a cleaning roller (41) that moves along the width direction of the photovoltaic panel (2).

3. A photovoltaic support with anti-shielding function according to claim 2, characterized in that: A driving belt (12) for driving the protective net (11) to rotate is arranged at one end of the protective net (11), a notch (121) is provided on the inner ring side wall of the driving belt (12), a follower seat (43) is provided at the end of the cleaning roller (41), and a clamping rod (44) capable of clamping and cooperating with the notch (121) is provided on the follower seat (43).

4. The photovoltaic support with anti-shielding function according to claim 3, characterized in that: A clamping ring (45) is rotatably arranged on the follower seat (43) along the axis of the cleaning roller (41); inclined spring pieces (451) are evenly arranged on the inner ring side wall of the clamping ring (45); a ratchet (46) fixedly connected to the end of the cleaning roller (41) is also arranged in the inner ring of the clamping ring (45); the ratchet (46) and the spring piece (451) are unidirectionally rotatably matched; and a clamping rod (44) is fixedly arranged on the outer peripheral wall of the clamping ring (45).

5. The photovoltaic support with anti-shielding function according to claim 4, characterized in that: A drying roller (48) is arranged at the front end of the cleaning roller (41) when cleaning is performed. The drying roller (48) is rotatably arranged on the follower seat (43). When the clamping rod (44) is clamped with the notch (121), the drying roller (48) does not contact the surface of the photovoltaic panel (2). When the clamping rod (44) is disengaged from the notch (121), the drying roller (48) rolls with the surface of the photovoltaic panel (2).

6. The photovoltaic support with anti-shielding function according to claim 5, characterized in that: A transmission assembly (49) is provided between the drying roller (48) and the clamping ring (45). The transmission assembly (49) comprises a lifting frame (491) which is arranged on the follower seat (43) and is movable along the height direction of the follower seat (43). The lifting frame (491) passes through the follower seat (43) and is connected to the drying roller (48). An extension rod (492) is fixedly provided on the lifting frame (491) along the moving direction of the follower seat (43). A slide groove (4921) is provided on the lifting frame (491). An extension column (493) which is slidably matched with the slide groove (4921) is provided at the end of the clamping ring (45).

7. The photovoltaic support with anti-shielding function according to claim 1, characterized in that: A traction rope (432) is arranged at the end of the follower seat (43), and a weight (431) that moves in a vertical direction is fixedly arranged at one end of the traction rope (432) away from the follower seat (43).

8. The photovoltaic support with anti-shielding function according to claim 3, characterized in that: A receiving groove (5) is provided at the lowest position of the photovoltaic panel (2) along the length direction of the photovoltaic panel (2), and the receiving groove (5) is located in the inner ring of the protective net (11).

9. The photovoltaic support with anti-shielding function according to claim 8, characterized in that: A scraper (51) is movably arranged in the receiving groove (5) along the extension direction of the receiving groove (5), and a screw rod (52) is penetrated and arranged on the scraper (51) along the extension direction of the receiving groove (5), and the screw rod (52) is threadably matched with the scraper (51).

10. The photovoltaic support with anti-shielding function according to claim 9, characterized in that: A plurality of synchronous wheels (53) are arranged on one side of the follower seat (43). The synchronous wheels (53) are arranged in a polygonal structure. A synchronous belt (54) is sleeved on the outer periphery of the synchronous wheels (53) and is in transmission cooperation with all the synchronous wheels (53). A first gear (55) is arranged at the end of one of the synchronous wheels (53). A second gear (56) meshing with the first gear (55) is arranged at the end of the lead screw (52). The follower seat (43) is fixedly connected to the synchronous belt (54).

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