Photovoltaic support with wind and sand resistance

Abstract

The present application belongs to photovoltaic panel support structure technical field, especially, it is involved in a kind of photovoltaic support with wind sand resistance function, including two horizontal poles being symmetrically arranged, both ends of two horizontal poles are prefabricated with cement counterweight seat, both ends of two horizontal poles are detachably provided with first support rod and second support rod, two sides first support rod and second support rod are herringbone-shaped arrangement, and the upper end of first support rod and the upper end of second support rod are fixedly connected, two second support rods are fixedly provided with two mounting beams between rod wall, further comprising: wind guide mechanism, it is arranged between two mounting beams, and the bottom of wind guide mechanism vertically extends downward, for guiding the part of gas to the back of photovoltaic panel downward.This application can change the direction of back wind sand flow, intercept sand dust, realize auxiliary weight, continuous blowing cement counterweight seat to prevent sand settlement, and improve the overall anti-overturning and anti-sliding performance of photovoltaic support in wind sand area.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic panel support structure technology, and in particular relates to a photovoltaic support bracket with wind and sand resistance function. Background Technology

[0002] Currently, most photovoltaic power stations use tilted photovoltaic brackets, which rely on four corner cement counterweights to complete the overall fixation, thereby meeting the site's sunlight reception requirements. However, in the Gobi Desert in the northwest and the northern areas with frequent sandstorms, sandstorms occur year-round, and the sandstorms will impact the entire photovoltaic bracket and photovoltaic panels from multiple directions.

[0003] Existing photovoltaic (PV) brackets rely solely on the strength of the profiles themselves and the weight of the cement base to passively resist wind loads, without any specific airflow guidance structures. Especially when sand and dust enter from the back of the PV panel and blow directly onto it, a large vortex zone is easily formed under the PV panel. The vortex will continuously exert an upward thrust on the PV panel and the PV bracket. This upward thrust will directly offset the downward pressing load of the PV bracket and the four corner cement counterweights, significantly weakening the original anti-overturning and anti-slip capabilities of the PV bracket. As a result, the overall wind and sand resistance performance will be significantly reduced, making it difficult to meet the long-term stable operation requirements of areas prone to sandstorms. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a photovoltaic support structure with wind and sand resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a photovoltaic support with wind and sand resistance function, comprising two symmetrically arranged crossbars, each crossbar having a prefabricated cement counterweight at both ends, and a first support rod and a second support rod detachably mounted at both ends of each crossbar. The first and second support rods on both sides are arranged in a herringbone shape, with the upper ends of the first and second support rods fixedly connected. Two mounting beams are fixedly mounted between the walls of the two second support rods. The invention also includes:

[0006] An air guide mechanism is disposed between the two mounting beams, and the bottom of the air guide mechanism extends vertically downward to guide part of the gas blown toward the back of the photovoltaic panel downward.

[0007] A load-bearing mechanism is located between two crossbars, and the bottom of the air guiding mechanism extends into the interior of the load-bearing mechanism;

[0008] A sand-blocking mechanism is installed inside the load-bearing mechanism to intercept sand in the gas. An air outlet mechanism is provided on the side wall of the load-bearing mechanism and below the sand-blocking mechanism, and the air outlet of the air outlet mechanism extends to the position of the cement counterweight.

[0009] Preferably, the air guiding mechanism includes a fixed plate fixedly disposed between two mounting beams, and two connecting rods are symmetrically fixedly disposed on the lower surface of the fixed plate, with the same air guiding tube fixedly disposed at the ends of the two connecting rods away from the fixed plate.

[0010] Preferably, the top diameter of the air guide duct is larger than the bottom diameter, and one side of the top of the air guide duct is provided with an inclined surface with the same inclination as the fixed plate.

[0011] Preferably, the load-bearing mechanism includes a load-bearing cylinder that is vertically fixed between two horizontal bars, and the load-bearing cylinder is flared. The bottom of the load-bearing cylinder is threaded with a cylinder bottom, and a knob is fixedly provided at the bottom of the cylinder bottom.

[0012] Preferably, the sand-blocking mechanism includes a circular intercepting net that is vertically slidably disposed inside the load-bearing cylinder. A conical intercepting net is fixedly disposed on the upper surface of the circular intercepting net. Multiple evenly distributed telescopic rods are fixedly disposed around the bottom edge of the circular intercepting net and the top edge of the cylinder bottom. Springs are sleeved on the walls of the multiple telescopic rods.

[0013] Preferably, the air outlet mechanism includes multiple air outlet pipes that are fixedly arranged around the side wall of the load-bearing cylinder, with the ends of the multiple air outlet pipes facing the position of the cement counterweight seat, and anti-clogging nets are fixedly provided at the end openings of the multiple air outlet pipes.

[0014] Preferably, a fixing rod is fixed on both sides between the two mounting beams, and the rod wall of the two fixing rods is provided with an air guide plate, with the downward-facing end of the two air guide plates being curved.

[0015] Preferably, both ends of the crossbar are provided with mounting grooves, and the lower ends of the first support rod and the second support rod are respectively inserted into the mounting grooves on both sides and fixedly connected to the crossbar by bolt groups.

[0016] Preferably, the top of the cement counterweight is provided with a sand-proof accumulation seat.

[0017] Compared with existing technologies, the present invention has the following advantages:

[0018] 1. This invention, through the setting of wind-guiding and load-bearing mechanisms, has inclined flow-guiding curved surfaces designed on the outer walls of both the wind-guiding duct and the trumpet-shaped load-bearing duct. When wind and sand come from the back of the photovoltaic panel, the slope of the duct body changes the path of the airflow carrying sand and dust, greatly reducing the area of ​​direct vertical impact of wind and sand on the photovoltaic back panel. At the same time, it guides the airflow, disperses the concentrated wind pressure on the back of the photovoltaic panel, and disperses the negative pressure vortex that is easily formed under the photovoltaic panel, effectively weakening the upward suction thrust brought by the vortex and alleviating the risk of overturning and sliding of the entire support structure caused by leeward wind and sand.

[0019] 2. The present invention, through the sand-blocking mechanism, allows the airflow, after being guided downwards by the air-guiding mechanism, to converge into the inner cavity of the load-bearing cylinder. When the airflow passes through the circular and conical intercepting nets, the coarse sand particles in the sand are trapped and accumulated by the two layers of equal-pore-size filters, continuously increasing the weight of the load-bearing cylinder itself. This, together with the four corner cement counterweights, forms a double downward counterweight to counteract the upward force generated by the airflow on the leeward side. At the same time, the intercepting net, combined with the telescopic rod and spring, forms a flexible buffer structure that can absorb the instantaneous impact kinetic energy of the sand and prevent the intercepting net and cylinder from deforming and breaking due to long-term hard impact from the sand.

[0020] 3. The present invention uses an air outlet mechanism to direct the clean airflow filtered by the sand interception mechanism to multiple air outlet pipes, which continuously and directionally blow the sand-proof accumulation seat on top of the cement counterweight seat, forming an uninterrupted blowing airflow layer. This layer carries away the loose sand that falls on the surface of the counterweight seat in real time, preventing sand from accumulating and burying the cement counterweight block. It also prevents the sand around the base from being hollowed out by the vortex and unevenly sinking, thus maintaining the original anti-slip and anti-overturning performance of the cement counterweight seat for a long time. Attached Figure Description

[0021] Figure 1 This is a first-view perspective perspective view of the present invention;

[0022] Figure 2 This is a perspective view of the invention from a second viewpoint;

[0023] Figure 3 This is a perspective view of the air guiding mechanism, load-bearing mechanism, and air outlet mechanism in this invention;

[0024] Figure 4 This is a first-view perspective perspective view of the air guide tube, load-bearing tube, and sand-blocking mechanism in this invention.

[0025] Figure 5 This is a second-view perspective perspective view of the air guide tube, load-bearing tube, and sand-blocking mechanism in this invention;

[0026] Figure 6 This is a perspective view of the connection between the crossbar, the cement counterweight, and the first support rod in this invention.

[0027] In the diagram: 1. Horizontal bar, 2. Cement counterweight seat, 3. First support rod, 4. Second support rod, 5. Mounting beam, 6. Air guide mechanism, 61. Fixing plate, 62. Connecting rod, 63. Air guide tube, 7. Load-bearing mechanism, 71. Load-bearing tube, 72. Tube bottom, 73. Knob, 8. Sand-blocking mechanism, 81. Circular interception net, 82. Conical interception net, 83. Telescopic rod, 84. Spring, 9. Air outlet mechanism, 91. Air outlet pipe, 92. Anti-clogging net, 10. Fixing rod, 11. Air guide plate, 12. Mounting groove, 13. Bolt group, 14. Sand-proof accumulation seat. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] like Figures 1-2 and Figures 4-6 As shown, a photovoltaic support structure with wind and sand resistance includes two symmetrically arranged crossbars 1. Each crossbar 1 has a prefabricated cement counterweight 2 at both ends. A sand-proof accumulation seat 14 is provided on top of the cement counterweight 2. The top of the sand-proof accumulation seat 14 has a frustum-shaped structure; its inclined design prevents large amounts of sand from accumulating on top of the cement counterweight 2. Both ends of the two crossbars 1 are detachably equipped with a first support rod 3 and a second support rod 4. The first support rod 3 and the second support rod 4 on both sides are arranged in a herringbone shape, with the upper ends of the first support rod 3 and the second support rod 4 fixedly connected. Each end of the crossbar 1 has a mounting groove 12. The lower ends of the first support rod 3 and the second support rod 4 are respectively inserted into the mounting grooves 12 on both sides and fixedly connected to the crossbar 1 by a bolt group 13. The bolt group 13 can be used to secure the first support rod 3 to the crossbar 1. The first pole 3 and the second pole 4 are detachable from the crossbar 1 for easy construction and transportation. Two mounting beams 5 are fixed between the pole walls of the two second poles 4. The two mounting beams 5 can support the photovoltaic panel, and the mounting beams 5 are provided with mounting holes for fixing the photovoltaic panel. It also includes: a wind guide mechanism 6, which is set between the two mounting beams 5, and the bottom of the wind guide mechanism 6 extends vertically downward to guide part of the gas blown towards the back of the photovoltaic panel downward; a load-bearing mechanism 7, which is set between the two crossbars 1, and the bottom of the wind guide mechanism 6 extends into the interior of the load-bearing mechanism 7; a sand trapping mechanism 8, which is set inside the load-bearing mechanism 7 to intercept sand in the gas. An air outlet mechanism 9 is set on the side wall of the load-bearing mechanism 7 and below the sand trapping mechanism 8, and the air outlet end of the air outlet mechanism 9 extends to the position of the cement counterweight 2.

[0030] In practical use, in this embodiment, when sand blows from the windward side of the photovoltaic panel, the airflow impacts the tilted surface of the photovoltaic panel and forms an oblique flow along the panel surface, creating a downward pressing force on the photovoltaic panel and the photovoltaic support as a whole. This downward pressure increases the static friction between the bottom cement counterweight 2 and the ground, preventing upward lifting loads and having no negative impact on the anti-slip and anti-overturning capabilities of the photovoltaic support. To a certain extent, it can also help improve the stability of the photovoltaic support. When sand enters from the back of the photovoltaic panel, most of the airflow will directly contact the air guide mechanism 6 and the load-bearing mechanism 7. Under the diversion and guidance effect of the arc-shaped air guide surface of the air guide mechanism 6, most of the airflow carrying sand particles will be guided to the load-bearing mechanism. The internal cavity of the structure 7 allows the sand and dust particles carried by the airflow to be intercepted and retained in the inner cavity of the load-bearing structure 7 when the airflow passes through the sand-blocking mechanism 8. The continuously accumulating sand and soil can continuously increase the weight of the load-bearing structure 7 itself, further strengthening the downward pressure and anti-lifting ability of the cement counterweight 2. Some of the airflow that is not intercepted is guided directly to the ground along the outer guide slope of the load-bearing structure 7, changing the original airflow direction that was directly hitting the back of the photovoltaic panel, dispersing the negative pressure vortex that is easily formed at the bottom of the photovoltaic panel, and greatly weakening the upward suction force generated by the photovoltaic panel. Through the synergistic effect of multiple actions such as diversion and wind guidance, sand accumulation and weight increase, and deflection and pressure relief, the damage of leeward wind and sand to the stability of the photovoltaic support is effectively alleviated, and the wind and sand resistance of the photovoltaic support in windy and sandy areas is improved.

[0031] like Figures 1-2 As shown, in this embodiment, the air guiding mechanism 6 includes a fixed plate 61 fixedly disposed between two mounting beams 5. Two connecting rods 62 are symmetrically fixed on the lower surface of the fixed plate 61. The ends of the two connecting rods 62 away from the fixed plate 61 are fixedly disposed with the same air guiding duct 63. The air guiding duct 63 is arranged on the back rear side of the photovoltaic panel. The top diameter of the air guiding duct 63 is larger than the bottom diameter, and one side of the top of the air guiding duct 63 is provided with an inclined surface with the same inclination as the fixed plate 61. A small amount of wind and sand will enter through the gap between the top of the air guiding duct 63 and the photovoltaic panel. Under the guiding effect of the back of the photovoltaic panel, the sand and sand enter the interior of the air guiding duct 63. At this time, the inner wall of the air guiding duct 63 can change the direction of the wind and sand and blow it toward the ground.

[0032] In practical use, in this embodiment, when sand blows from the back of the photovoltaic panel, some of the airflow will first contact the inclined outer wall of the air guide duct 63. Relying on the diversion and guiding effect of the inclined air guide surface of the air guide duct 63 itself, the path of most of the airflow carrying sand and dust is forcibly changed, and it no longer impacts the back of the photovoltaic panel. At the same time, the body of the air guide duct 63 forms a through pressure relief channel, and the wind pressure that was originally concentrated on the back of the photovoltaic panel is quickly dispersed and released, which greatly weakens the negative pressure vortex and upward suction force formed at the bottom of the photovoltaic panel. This avoids the continuous direct impact and pulling of sand and dust on the back of the photovoltaic panel and the back support components, reduces the risk of overturning and slippage caused by leeward sand and dust, and effectively improves the operational stability of the photovoltaic support in the sand and dust environment.

[0033] like Figures 1-2 and Figures 4-5 As shown, in this embodiment, the load-bearing mechanism 7 includes a load-bearing cylinder 71 that is vertically fixed between two horizontal bars 1. The load-bearing cylinder 71 is trumpet-shaped. The bottom of the load-bearing cylinder 71 is threaded with a cylinder bottom 72. A knob 73 is fixedly provided at the bottom of the cylinder bottom 72. When it is necessary to open the cylinder bottom 72, simply rotate the knob 73 to remove the cylinder bottom 72 from the bottom of the load-bearing cylinder 71.

[0034] In actual use, in this embodiment, when sand blows towards the back of the photovoltaic panel, some of the airflow will directly rush towards the outer wall of the bottom support cylinder 71. The support cylinder 71 is funnel-shaped. When the airflow carrying sand and dust comes into contact with the slope of the cylinder, it will be guided downward along the outer contour of the cylinder. The direction of airflow that was originally aimed directly at the photovoltaic back panel is completely changed, which greatly reduces the amount of wind and sand directly hitting the back of the photovoltaic panel and weakens the concentrated wind pressure on the back of the photovoltaic panel. At the same time, the downward airflow can disperse the low-pressure vortex that is easy to form under the photovoltaic panel, alleviate the upward suction force generated by the vortex, and reduce the adverse effects of sand and dust on the stability of the photovoltaic support.

[0035] like Figures 1-2 and Figures 4-5 As shown, in this embodiment, the sand-blocking mechanism 8 includes a circular intercepting net 81 vertically slidably disposed inside the load-bearing cylinder 71. A conical intercepting net 82 is fixedly disposed on the upper surface of the circular intercepting net 81. Both the circular intercepting net 81 and the conical intercepting net 82 have a 2mm aperture, ensuring balanced sand-blocking efficiency when used together. This ensures stable sand accumulation in the load-bearing cylinder 71 and maintains normal airflow on the leeward side. Multiple evenly distributed telescopic rods 83 are fixedly disposed around the bottom edge of the circular intercepting net 81 and the top edge of the cylinder bottom 72. Springs 84 are fitted onto the walls of the telescopic rods 83. When wind and sand blow onto the surfaces of the circular intercepting net 81 and the conical intercepting net 82, an impact force is generated, causing the circular intercepting net 81 and the conical intercepting net 82 to shift downward and compress the telescopic rods 83 and the springs 84. The elastic deformation generated by the compression of the springs 84 can... The system absorbs most of the instantaneous kinetic energy from the sandstorm impact, forming a flexible buffer for the circular interception net 81 and the conical interception net 82. This reduces the vibration damage to the circular interception net 81, the conical interception net 82, and the load-bearing cylinder 71 caused by the hard impact of the sandstorm. After the sandstorm impact weakens and the airflow impact force decreases, the compressed spring 84 will return to its original position due to its own elasticity, causing the telescopic rod 83 to rebound upwards. This allows the circular interception net 81 and the conical interception net 82 to return upwards, maintaining a stable sand-blocking and guiding state and avoiding deformation and damage caused by long-term hard impact. To prevent the intercepted sand from completely covering the surface of the conical interception net 82 and preventing the sandstorm from passing through, it needs to be cleaned manually periodically. The bottom of the load-bearing cylinder 71 is rotated manually to remove the circular interception net 81 and the conical interception net 82 along with the bottom of the cylinder 72. At this time, the intercepted sand flows out automatically under the action of gravity.

[0036] In actual use, in this embodiment, the sand and dust guided by the inner and outer walls of the load-bearing cylinder 71 will pass through the circular intercepting net 81 and the conical intercepting net 82 in sequence, so that the sand particles carried in the airflow are blocked and retained. The intercepted and accumulated sand and soil continue to accumulate inside the load-bearing cylinder 71, continuously increasing the overall weight of the load-bearing cylinder 71, thereby assisting in downward pressure and counteracting the upward suction force formed by the sand and dust on the back side of the photovoltaic panel, improving the anti-overturning performance of the photovoltaic support. The filtered and separated clean airflow flows downward along the cylinder body and enters the air outlet mechanism 9 for outward discharge, maintaining normal airflow on the leeward side. It should be noted that over time, a large amount of sand and soil will continue to remain inside the load-bearing cylinder 71. Above the circular interception net 81, the thickness of the accumulated material gradually increases, which can easily block the mesh of the circular interception net 81 and obstruct the airflow channel. In this solution, the conical interception net 82 is arranged in a raised, layered manner, with its overall position higher than the circular interception net 81. There is no sand or soil accumulation above it to block the space. Even if the lower layer of the circular interception net 81 is filled with sand and blocked, the wind and sand can still come into contact with the conical interception net 82 from the upper position and flow smoothly through its mesh downwards. This ensures that the airflow channel and pressure relief on the leeward side are not completely interrupted, continuously weakening the wind pressure and vortex suction force on the back of the photovoltaic panel, and ensuring the long-term stable wind and sand resistance of the photovoltaic support.

[0037] like Figures 1-5 As shown, in this embodiment, the air outlet mechanism 9 includes a plurality of air outlet pipes 91 that are fixedly arranged around the side wall of the load-bearing cylinder 71. The ends of the plurality of air outlet pipes 91 are respectively directed toward the position of the cement counterweight 2, and anti-blocking nets 92 are fixedly provided at the ends of the plurality of air outlet pipes 91 to prevent sand and soil in the wind from entering and causing blockage of the air outlet pipes 91.

[0038] In actual use, in this embodiment, the airflow filtered by the filter screen flows downward to the bottom of the load-bearing cylinder 71, and is diverted into a plurality of air outlet pipes 91. Multiple airflows are respectively directed to blow toward the outer surface of each cement counterweight seat 2. The airflow continuously sweeps over the sand accumulation prevention seat 14 matched with the cement counterweight seat 2 to form a stable purging airflow layer, which can take away the floating sand falling on the surface of the sand accumulation prevention seat 14 in real time, preventing sand and dust from staying for a long time and accumulating layer by layer. Relying on continuous directional air supply combined with the structure of the sand accumulation prevention seat 14, it can not only prevent the cement counterweight seat 2 from being buried by sand and soil, ensure sufficient contact friction between the cement counterweight seat 2 and the ground, and maintain the original anti-slip and anti-overturning capabilities of the photovoltaic support. It should be noted that the sand accumulation prevention seat 14 on the top of the cement counterweight seat 2 is a frustum-inclined passive sand prevention structure. Sand and soil falling on the inclined surface can slide down by gravity to reduce sand retention. However, when facing sand grains carried by high-speed wind sand, the sand grains have impact kinetic energy and are easy to adhere to the surface of the frustum, and the accumulated sand cannot be completely eliminated only by the gravity of the inclined surface. The air outlet mechanism 9 is an active sand cleaning means, which can use the filtered airflow to directionally purge the sand accumulation prevention seat 14, and timely blow off the sand and soil attached and remaining at the corners. The two form double protection of passive sand unloading and active purging, complement each other, prevent sand and soil from gradually accumulating and burying the cement counterweight seat 2, and ensure the stability of the counterweight effect of the cement counterweight seat 2 and the friction performance with the ground.

[0039] As Figures 1-3 shown, further, in this embodiment, fixing rods 10 are fixedly arranged on both sides between the two mounting beams 5, the rod walls of the two fixing rods 10 are both provided with air guide plates 11, the downward ends of the two air guide plates 11 are arranged in an arc-shaped bend, the inclination of the plane part of the air guide plate 11 is the same as that of the photovoltaic panel, and the inclination of the bent part of the air guide plate 11 is greater than that of the photovoltaic panel.

[0040] In actual use, in this embodiment, when wind and sand blow toward the back side of the photovoltaic panel, a small part of the airflow will be diverted to the air guide plates 11 on the left and right sides of the back of the photovoltaic panel. After the airflow contacts the inclined plate surface of the air guide plate 11, it is guided and diverted to the ground along the guiding trend of the plate surface, which greatly reduces the wind-sand coverage area that can directly impact the back of the photovoltaic panel, and reduces the wind pressure load borne by the back of the photovoltaic panel.

[0041] The operation process of this embodiment is as follows: construction personnel first fix the first support rod 3 and the second support rod 4 to the cross rod 1, then install the two mounting beams 5 between the second support rods 4 on both sides to form a photovoltaic support, then stably place the photovoltaic support through the cement counterweight seats 2 at both ends of the cross rod 1, and finally install the photovoltaic panel on the two mounting beams 5 to complete the installation;

[0042] When wind and sand blow from the windward side of the photovoltaic panel, the airflow impacts the tilted surface of the photovoltaic panel and forms an oblique flow along the panel surface, creating a downward pressing force on the photovoltaic panel and the photovoltaic support as a whole. This downward pressure can increase the static friction between the bottom cement counterweight 2 and the ground, and will not generate an upward lifting load. It has no negative impact on the anti-slip and anti-overturning capabilities of the photovoltaic support, and can also help improve the stability of the photovoltaic support to a certain extent.

[0043] When sand and dust enter from the back of the photovoltaic panel, most of the airflow will first contact the inclined outer wall of the air guide duct 63. Relying on the diversion and guiding effect of the inclined guide surface of the air guide duct 63 itself, the airflow carrying sand and dust is forced to change its path and no longer impacts the back of the photovoltaic panel. At the same time, a small amount of airflow will also enter the inner wall of the air guide duct 63. After being guided by the inner and outer walls of the load-bearing cylinder 71, the sand and dust will pass through the circular interception net 81 and the conical interception net 82 in sequence, so that the sand particles carried in the airflow are blocked and retained. The intercepted and accumulated sand and dust continue to accumulate inside the load-bearing cylinder 71, continuously increasing the overall weight of the load-bearing cylinder 71, thereby assisting in downward pressure and counteracting the upward suction force formed by the sand and dust on the back of the photovoltaic panel, improving the anti-tipping performance of the photovoltaic support. The filtered and separated clean airflow then flows downward along the cylinder body. The air inlet and outlet mechanism 9 discharges outwards, maintaining normal airflow on the leeward side. It should be noted that over time, a large amount of sand and soil will remain above the circular interception net 81, and the accumulation thickness will gradually increase, which will easily block the mesh of the circular interception net 81 and obstruct the airflow channel. In this solution, the conical interception net 82 is arranged in a raised layer, with its overall position higher than the circular interception net 81. There is no sand and soil accumulation above to block the space. Even if the lower circular interception net 81 is filled with sand and soil and blocked, the wind and sand can still contact the conical interception net 82 from the upper position and flow smoothly through its mesh downwards, ensuring that the airflow channel and pressure relief on the leeward side will not be completely interrupted, continuously weakening the wind pressure and vortex suction on the back of the photovoltaic panel, and ensuring the long-term stable wind and sand resistance of the photovoltaic support.

[0044] At the same time, a portion of the airflow will rush directly to the outer wall of the bottom support cylinder 71. The support cylinder 71 is funnel-shaped. When the airflow carrying sand and dust comes into contact with the slope of the cylinder, it will be guided downward along the outer contour of the cylinder. The direction of the airflow that originally rushed directly to the photovoltaic back panel is completely changed, which greatly reduces the amount of wind and sand directly hitting the back of the photovoltaic panel and weakens the concentrated wind pressure on the back of the photovoltaic panel. At the same time, the downward airflow can disperse the low-pressure vortex that is easy to form under the photovoltaic panel, alleviate the upward suction force generated by the vortex, and reduce the adverse effects of wind and sand on the stability of the photovoltaic support.

[0045] In addition, a small portion of the airflow is diverted to the wind guide plates 11 on the left and right sides of the back of the photovoltaic panel. After contacting the inclined surface of the wind guide plates 11, the airflow is guided and diverted towards the ground, significantly reducing the area of ​​sand and dust that can directly impact the back of the photovoltaic panel, reducing the wind pressure load on the back of the photovoltaic panel, and changing the trajectory of this part of the side sand and dust, allowing the airflow to be released directly towards the ground. This reduces the formation of closed vortices under the photovoltaic panel, alleviates the upward suction force brought by the vortices, and mitigates the adverse effects of back-facing sand and dust on the stability of the photovoltaic support.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A photovoltaic support structure with wind and sand resistance function, comprising two symmetrically arranged crossbars (1), each end of which is prefabricated with a cement counterweight (2), and each end of the two crossbars (1) is detachably provided with a first support (3) and a second support (4), the first support (3) and the second support (4) on both sides are arranged in a V-shape, and the upper end of the first support (3) and the upper end of the second support (4) are fixedly connected, and two mounting beams (5) are fixedly provided between the walls of the two second support (4), characterized in that, Also includes: The air guide mechanism (6) is located between the two mounting beams (5), and the bottom of the air guide mechanism (6) extends vertically downward to guide part of the gas blown toward the back of the photovoltaic panel downward. The load-bearing mechanism (7) is located between two crossbars (1), and the bottom of the air guide mechanism (6) extends into the interior of the load-bearing mechanism (7); The sand-blocking mechanism (8) is located inside the load-bearing mechanism (7) and is used to intercept sand in the gas. The side wall of the load-bearing mechanism (7) and below the sand-blocking mechanism (8) is provided with an air outlet mechanism (9), and the air outlet end of the air outlet mechanism (9) extends to the position of the cement counterweight seat (2).

2. A photovoltaic support structure with wind and sand resistance function according to claim 1, characterized in that, The air guide mechanism (6) includes a fixed plate (61) fixedly disposed between two mounting beams (5). Two connecting rods (62) are symmetrically fixed on the lower surface of the fixed plate (61). The two connecting rods (62) are fixedly disposed at the same air guide tube (63) at the ends away from the fixed plate (61).

3. A photovoltaic support structure with wind and sand resistance according to claim 2, characterized in that, The top diameter of the air guide tube (63) is larger than the bottom diameter, and the top side of the air guide tube (63) is provided with an inclined surface with the same inclination as the fixed plate (61).

4. A photovoltaic support structure with wind and sand resistance function according to claim 1, characterized in that, The load-bearing mechanism (7) includes a load-bearing cylinder (71) that is vertically fixed between two horizontal bars (1), and the load-bearing cylinder (71) is flared. The bottom of the load-bearing cylinder (71) is threaded with a cylinder bottom (72), and a knob (73) is fixedly provided at the bottom of the cylinder bottom (72).

5. A photovoltaic support structure with wind and sand resistance according to claim 4, characterized in that, The sand-blocking mechanism (8) includes a circular intercepting net (81) that is vertically slidably disposed inside the load-bearing cylinder (71). A conical intercepting net (82) is fixedly disposed on the upper surface of the circular intercepting net (81). Multiple telescopic rods (83) are uniformly distributed and fixedly disposed around the bottom edge of the circular intercepting net (81) and the top edge of the cylinder bottom (72). Springs (84) are sleeved on the walls of the multiple telescopic rods (83).

6. A photovoltaic support structure with wind and sand resistance according to claim 4, characterized in that, The air outlet mechanism (9) includes multiple air outlet pipes (91) that are fixedly arranged around the side wall of the load-bearing cylinder (71). The ends of the multiple air outlet pipes (91) are respectively facing the position of the cement counterweight (2), and anti-blocking nets (92) are fixedly provided at the end of the multiple air outlet pipes (91).

7. A photovoltaic support structure with wind and sand resistance according to claim 1, characterized in that, A fixing rod (10) is fixed on both sides between the two mounting beams (5). The rod walls of the two fixing rods (10) are provided with air guide plates (11). The downward end of the two air guide plates (11) is set with an arc bend.

8. A photovoltaic support structure with wind and sand resistance according to claim 1, characterized in that, Both ends of the crossbar (1) are provided with mounting grooves (12). The lower ends of the first support rod (3) and the second support rod (4) are respectively inserted into the mounting grooves (12) on both sides and are fixedly connected to the crossbar (1) by bolt group (13).

9. A photovoltaic support structure with wind and sand resistance according to claim 1, characterized in that, The top of the cement counterweight (2) is provided with a sand-proof accumulation seat (14).

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