Photovoltaic support for sandy ground

Abstract

The application discloses a photovoltaic support for sandy land, which comprises a soil body loss prevention enclosure, a photovoltaic panel height-adjustable support column and a plurality of inclined support beams. The soil body loss prevention enclosure is inserted into the soil body. The photovoltaic panel height-adjustable support column is located in the soil body loss prevention enclosure and is inserted into the soil body. The inclined support beams are fixedly connected between the soil body loss prevention enclosure and the photovoltaic panel height-adjustable support column in a circumferential direction. The photovoltaic support for sandy land has the dual technical effects of active protection and active settlement adjustment on the desert wind-sand environment, and fundamentally solves the fatal defects of the traditional photovoltaic support, such as foundation instability and uncontrollable settlement in the sandy land scene, thereby providing a reliable technical scheme for long-term safe, efficient and economic operation of the photovoltaic power station in the desert area.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic support technology, and more specifically to a photovoltaic support for use in sandy areas. Background Technology

[0002] Desert regions are arid year-round and subject to severe wind and sand erosion. Sand particles move with the wind, and in this natural environment, sand pits and sand piles are easily formed on the ground. Moreover, the terrain changes rapidly. When photovoltaic brackets are installed in such environments, the foundations of the photovoltaic brackets are easily affected by these terrain changes, resulting in tilting, settlement, or even instability and reduced load-bearing capacity. This seriously affects the safety of the photovoltaic brackets and makes it impossible to guarantee the reliability of the photovoltaic power station within its normal design service life. Summary of the Invention

[0003] In view of this, the present invention provides a photovoltaic support for sandy areas, which specifically addresses the above-mentioned problems of photovoltaic support in desert and other sandy areas, and ensures the reliable and stable operation of photovoltaic power stations.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A photovoltaic support system for use in sandy areas includes: A soil erosion prevention barrier is inserted into the soil. The photovoltaic panel height adjustable support column is located inside the soil erosion prevention fence and inserted into the soil. Multiple diagonal bracing beams are circumferentially fixed between the photovoltaic panel height adjustable support column and the soil erosion prevention fence.

[0006] Furthermore, the soil erosion prevention fencing includes: Corner fencing posts, wherein multiple corner fencing posts are arranged circumferentially and inserted into the soil. The fence side panels are multiple, each fence side panel is fixed between two adjacent corner fence posts, and each fence side panel is inserted into the soil. The side fencing columns are multiple in number, each of which is inserted into the soil and fixedly connected to its corresponding side panel. Each side fencing column is also fixedly connected to the photovoltaic panel height-adjustable support column via the diagonal bracing beam.

[0007] Furthermore, a reinforcing beam is fixed between the tops of two adjacent corner fence posts.

[0008] Furthermore, a sand-proof dense mesh net is laid on the soil in the area between the multiple fence side panels to prevent sand erosion and reduce wind erosion of the sandy land.

[0009] Furthermore, the height-adjustable support column for the photovoltaic panel includes: A supporting lower column pipe is located inside the side panel of the enclosure and inserted into the soil. Multiple diagonal bracing beams are circumferentially connected between the supporting lower column pipe and the side enclosure column. A lower connecting plate is fixed to the upper end of the supporting lower column pipe. The top of the lower connecting plate has an insertion hole arranged coaxially with the upper opening of the supporting lower column pipe. Three lower through holes are evenly distributed on the outer periphery of the insertion hole on the top of the lower connecting plate. A lower connecting nut is fixed on the lower edge of each lower through hole. A photovoltaic panel support column is provided. The lower part of the photovoltaic panel support column is sequentially inserted into the insertion hole and the upper pipe opening. An upper connecting plate is fitted on the bottom outer wall of the photovoltaic panel support column. Six upper through holes are evenly distributed on the top of the upper connecting plate. An upper connecting nut is fixed on the upper edge of each upper through hole. Among them, the three upper through holes and the three lower through holes are respectively aligned, and the connecting bolt is screwed to the upper connecting nut and passes through the upper through hole, and the lower through hole is screwed to the lower connecting nut; The other three upper through holes and the three lower through holes are arranged in a staggered manner. The adjusting screw is screwed into the upper connecting nut and passes through the upper through hole to abut against the top surface of the lower connecting plate.

[0010] Furthermore, a support sleeve is fitted onto the connecting bolt, and the support sleeve is supported between the lower connecting plate and the upper connecting plate.

[0011] Furthermore, the lower support column tube is circumferentially screwed with multiple tightening screws, which abut against the outer wall of the upper photovoltaic support column.

[0012] This invention provides a photovoltaic support system for sandy areas. Through the synergistic effect of "soil erosion prevention barriers" and "adjustable photovoltaic panel support columns," it systematically solves two core engineering challenges in desert wind and sand environments: foundation instability and uneven settlement of photovoltaic support systems. These challenges are addressed from both "passive protection" and "active adjustment" perspectives. Its overall technical effects can be summarized as follows: I. Significantly improved basic stability: 1. Three-dimensional sand erosion prevention to ensure foundation integrity: The soil erosion prevention enclosure forms a vertical barrier on the ground surface and underground, directly blocking the lateral erosion of the soil around the pile by wind and sand flow; the sand-proof dense mesh net 5 laid on the ground surface increases the surface roughness, solidifies the surface sand and soil, and prevents vertical wind erosion.

[0013] The combination of the two forms a three-dimensional protection system of "vertical barrier + horizontal coverage", which fundamentally solves the problem of soil erosion around the foundation caused by wind and sand movement in desert areas and ensures the long-term stability of the pile foundation bearing layer.

[0014] 2. Spatial truss structure to enhance overall lateral stiffness: The corner fence posts, fence side panels, side fence posts, and reinforcing beams together form a rigid fence frame.

[0015] The enclosure frame is fixedly connected to the central support column tube by circumferentially distributed diagonal bracing beams, forming a spatial truss system of "enclosure-diagonal bracing-central column".

[0016] This structure efficiently transfers the wind and sand impact force borne by the enclosure to the central column, while the central column also provides lateral support for the enclosure. The two work together to significantly improve the overall ability of the photovoltaic support to resist wind loads and lateral earth pressure, preventing the foundation from tilting and becoming unstable.

[0017] II. Adjustable and controllable settlement / heave, extending the lifespan of the power station: 1. A double-connecting plate staggered hole adjustment mechanism enables precise height adjustment: The upper and lower connecting plates adopt a unique hole layout of "three corresponding holes + three staggered holes" to physically separate the positioning function from the adjustment function.

[0018] By turning the adjusting screw in the misalignment hole, the upper column can be easily raised or lowered using the self-locking property of the screw pair, without the need for external equipment such as jacks, making the operation convenient and labor-saving.

[0019] The amount of screwing in the adjusting screw can be precisely controlled, enabling stepless precision adjustment of the column height and compensating for any amount of settlement or bulging.

[0020] 2. The rigid support sleeve ensures structural reliability after adjustment. After adjustment, a support sleeve of the same length as the current gap is fitted onto the connecting bolt, so that it is pressed between the upper and lower connecting plates.

[0021] The support sleeve becomes a rigid pressure-bearing component, directly bearing the vertical pressure, and the connecting bolts only need to provide pre-tightening force, which greatly improves the stress state.

[0022] Compared to pure bolt connections, the addition of sleeves makes the connection method more resistant to lateral vibration and impact, and has higher long-term reliability.

[0023] 3. Tighten the screws at multiple points to eliminate gaps and prevent rotation: Multiple tightening screws distributed circumferentially on the wall of the support column tube, when tightened, tighten against the outer wall of the inner column, eliminating the radial gap between the upper and lower columns.

[0024] The radial pressure generated by the tightening screw is converted into huge static friction force, which helps the connecting bolts bear vertical loads and torques, forming a double locking and effectively preventing the column from rotating under wind vibration.

[0025] III. Convenient construction and adaptable to harsh desert environments: 1. Fully prefabricated components, assembly-type construction: The corner fence posts, fence side panels, side fence posts, reinforcing beams, and diagonal bracing beams are all prefabricated components, which can be assembled on site by plugging and bolting.

[0026] No on-site concrete pouring or welding is required, avoiding the difficulties of construction in the desert environment where water and electricity are scarce, and greatly reducing the difficulty of construction and dependence on large construction equipment.

[0027] 2. Modular design, low maintenance cost: The soil erosion prevention fencing and height-adjustable support columns have clearly defined functional zones, and each component can be replaced or repaired independently.

[0028] The height adjustment mechanism is ingeniously designed to level uneven settlement at single or multiple points at any time during power plant operation without disassembling photovoltaic panels or using large lifting equipment.

[0029] This avoids the high costs associated with traditional support systems that require abandonment and reconstruction due to structural deformation and damage caused by foundation settlement, significantly reducing the operation and maintenance costs throughout the power plant's lifecycle. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 This is a top view schematic diagram of a photovoltaic support structure for use in sandy areas, provided by the present invention.

[0032] Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the middle.

[0033] Figure 3 for Figure 1 A magnified schematic diagram of the structure of part B in the middle.

[0034] Figure 4 for Figure 1 A magnified schematic diagram of the structure of part C in the middle.

[0035] Figure 5 for Figure 1 A schematic diagram of the main structure.

[0036] Figure 6 for Figure 5 A magnified schematic diagram of the structure of part D in the middle.

[0037] Figure 7 This is a schematic diagram showing how the upper and lower connecting plates are connected by connecting bolts.

[0038] Figure 8 A schematic diagram of the main structure supporting the lower column tube.

[0039] Figure 9 This is a top view of the lower connecting plate.

[0040] Figure 10 This is a front view structural diagram showing the lower connecting nut installed on the lower connecting plate.

[0041] Figure 11 This is a schematic diagram of the main structure of the support column for the photovoltaic panel.

[0042] Figure 12 This is a top view of the upper connecting plate.

[0043] Figure 13 This is a front view schematic diagram of the structure with the upper connecting nut on the upper connecting plate. Detailed Implementation

[0044] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] This invention discloses a photovoltaic support structure for use in sandy areas, comprising: Soil erosion prevention barrier 1 is inserted into the soil 100; The photovoltaic panel height adjustable support column 2 is located inside the soil erosion prevention enclosure 1 and is inserted into the soil 100. Multiple diagonal bracing beams 3 are circumferentially fixed between the photovoltaic panel height adjustable support column 2 and the soil erosion prevention enclosure 1.

[0049] Installation Phase: After selecting the photovoltaic support installation point in the desert site, the lower part of the anti-soil erosion enclosure 1 is first inserted into the soil 100 (sand). This enclosure forms a closed protective barrier on and below the soil surface. Then, within the enclosure, the height-adjustable photovoltaic panel support columns 2 are inserted into the soil to the designed depth. Finally, multiple diagonal bracing beams 3 are circumferentially connected between the anti-soil erosion enclosure 1 and the height-adjustable photovoltaic panel support columns 2 to form a stable triangular support structure.

[0050] Service life: When sandstorms occur, the anti-soil erosion fencing 1 is the first to bear the direct impact and erosion of the sand flow. It effectively prevents the flow of sand outside the fencing and protects the soil inside the fencing from being carried away by wind erosion. The diagonal bracing beam 3 transfers the lateral force on the fencing to the central support column 2, and also transfers the stability of the support column to the fencing, forming a unified force-bearing system. The upper part of the height-adjustable photovoltaic panel support column 2 is used to install photovoltaic panels, and it has its own height adjustment function, which can be adjusted during subsequent use.

[0051] Technical effects: Active sand erosion prevention: By setting up physical barriers around the pile foundation (support column), the stress boundary conditions of the soil around the pile are fundamentally changed, effectively preventing the lateral erosion and scouring of the soil around the foundation by wind and sand, and ensuring the long-term existence and compactness of the foundation soil.

[0052] Enhanced overall stability: The soil erosion prevention enclosure, diagonal bracing beams, and central support columns are connected to form a stable spatial truss structure. The enclosure restricts lateral soil movement, while the diagonal bracing provides lateral support, significantly improving the overall ability of the photovoltaic support system to resist lateral wind loads and uneven foundation deformation.

[0053] The height of the photovoltaic panels can be adjusted at any time according to the foundation conditions: when the photovoltaic support structure bulges or settles and needs to be adjusted appropriately, the height of the photovoltaic support column can be adjusted appropriately through the photovoltaic panel height adjustable support column, thereby realizing the height adjustment of the photovoltaic support structure, controllable settlement, and ensuring the reliable operation of the photovoltaic power station.

[0054] Specifically, the soil erosion prevention fencing 1 includes: Corner fencing posts 11, which are multiple posts arranged circumferentially and inserted into the soil 100; The fence side panel 12 is a plurality of fence side panels 12, each fence side panel 12 is fixed between two adjacent corner fence posts 11, and each fence side panel 12 is inserted into the soil 100. There are multiple side fence posts 13. Each side fence post 13 is inserted into the soil 100 and is fixedly connected to its corresponding fence side plate 12. Each side fence post 13 is fixedly connected to the photovoltaic panel height adjustable support post 2 through the diagonal bracing beam 3.

[0055] Work process: Assemble the fence frame: First, lay out the fence in a rectangular or circular pattern at the predetermined location, and drive multiple corner fence posts 11 into the soil to form the four corner points or main load-bearing points of the fence.

[0056] Install the fencing panels: Insert the prefabricated fencing side panels 12 into the soil between two adjacent corner fencing posts 11, and fix them to the posts. The lower part of the fencing side panels is inserted into the soil, forming a continuous retaining wall with a certain depth.

[0057] Strengthening the connection: At the middle of each fence side panel 12 or at a location with high stress, the side fence posts 13 are driven into the soil and fixedly connected to their corresponding fence side panels 12. At this time, the side fence posts 13 serve as reinforcing ribs for the fence side panels and are also key nodes connecting the diagonal bracing beams 3.

[0058] Force transmission path is formed: the pressure of wind and sand on the side panel 12 of the enclosure or the lateral pressure of sand on the side panel 12 of the enclosure is transmitted to the side enclosure column 13 and the diagonal bracing beam 3 in sequence, and finally to the central support column 2.

[0059] Technical effects: High structural strength: The fence, composed of columns and side panels, has a much higher overall rigidity and strength than a single steel plate or sand-blocking net. The corner columns, side columns, and fence side panels together form a "skeleton-panel" system that can effectively resist the impact of wind and sand and soil pressure.

[0060] Easy to construct: All components (columns, side panels) are prefabricated and can be assembled on site by plugging and bolting. No large construction equipment is required, making it suitable for desert environments.

[0061] Clear and efficient force transmission: By using the side fence columns as connection points, the diagonal bracing beams can efficiently and directly transmit the horizontal force on the fence to the central column, thus optimizing the stress distribution of the entire support system.

[0062] In some embodiments, a reinforcing beam 4 is fixed between the tops of two adjacent corner fence posts 11.

[0063] After all the corner fence posts 11 have been installed, the tops of two adjacent corner fence posts 11 are connected and fixed together using reinforcing beams 4 to form a closed top frame.

[0064] Technical effects: Enhanced top restraint: The reinforced crossbeam 4 connects the tops of all corner fence posts 11 into a whole, limiting the relative displacement of the tops of the posts and significantly improving the lateral stiffness and overturning resistance of the entire fence structure.

[0065] Improved overall integrity: The fence structure has been transformed from an independent "panel + column" into an integrated spatial frame, resulting in more even stress distribution and preventing local instability of a single column due to excessive stress.

[0066] Provides additional functionality: This top frame can serve as an installation platform for future installation of other equipment (such as maintenance walkways, cleaning system tracks, etc.).

[0067] Furthermore, a sand-proof dense mesh net 5 is laid on the soil 100 located between multiple fence side panels 12 to prevent sand erosion and reduce wind erosion of the sandy land.

[0068] After the soil erosion prevention barrier 1 is installed, a layer of sand-proof dense mesh netting 5 is laid on the ground surface of the enclosed area (i.e., around the central support column 2). This netting can be laid close to the ground surface and fixed by U-shaped nails or by being directly buried with sand.

[0069] Technical effects: Surface sand fixation: The sand-proof dense mesh 5 covers the exposed ground surface around the pile foundation, increasing the surface roughness and effectively reducing the near-surface wind speed, thereby greatly reducing the erosion effect of wind on the surface sand particles.

[0070] The "reinforced soil" effect is formed: the dense mesh is interwoven with the topsoil, which is equivalent to reinforcing the topsoil, improving the integrity and shear strength of the soil, and can maintain the general integrity of the soil even if there is local wind erosion.

[0071] Dual protection: Unlike the "vertical barrier" function of the side panel 12 of the enclosure, the sand-proof mesh net 5 provides "horizontal coverage" protection. The combination of the two forms a three-dimensional and all-round protection for the soil around the pile, which maximizes the long-term stability of the foundation.

[0072] In another embodiment, the photovoltaic panel height-adjustable support column 2 includes: The lower support column pipe 21 is located inside the side plate 12 of the enclosure and is inserted into the soil 100. Multiple diagonal bracing beams 3 are circumferentially connected between the lower support column pipe 21 and the side enclosure column 13. The upper end of the lower support column pipe 21 is fixed with a lower connecting plate 22. The top of the lower connecting plate 22 has an insertion hole 221 arranged coaxially with the upper pipe opening of the lower support column pipe 21. Three lower through holes 222 are evenly distributed on the outer periphery of the insertion hole 221 on the top of the lower connecting plate 22. A lower connecting nut 23 is fixed on the lower edge of each lower through hole 222. The upper column 24 of the photovoltaic panel support is inserted into the insertion hole 221 and the upper pipe opening in sequence at the bottom. The upper connecting plate 25 is fitted on the bottom outer wall of the upper column 24 of the photovoltaic panel support. Six upper through holes 251 are evenly distributed on the top of the upper connecting plate 25. An upper connecting nut 26 is fixed on the upper edge of each upper through hole 251. Among them, the three upper through holes 251 and the three lower through holes 222 are respectively aligned, and the connecting bolt 27 is screwed onto the upper connecting nut 26 and passes through the upper through hole 251, the lower through hole 222 and the lower connecting nut 23. The other three upper through holes 251 and three lower through holes 222 are arranged in a staggered manner. The adjusting screw 28 is screwed onto the upper connecting nut 26 and passes through the upper through hole 251 to abut against the top surface of the lower connecting plate 22.

[0073] Work process: Initial installation: Drive the support column 21 into the soil to the design elevation.

[0074] The lower part of the photovoltaic panel support column 24 is passed through the insertion hole 221 of the lower connecting plate 22 and inserted into the upper pipe opening of the support column tube 21.

[0075] At this time, the upper connecting plate 25 sits on the lower connecting plate 22. The rotating photovoltaic panel support column 24 is used to precisely align the three upper through holes 251 on the upper connecting plate 25 with the three lower through holes 222 on the lower connecting plate 22.

[0076] Pass the three connecting bolts 27 through the aligned holes and tighten them with the lower connecting nuts 23 to complete the initial fixing. At this time, the other three upper through holes 251 and the three lower through holes 222 are staggered.

[0077] Height adjustment (after settling): Screw the three adjusting screws 28 into the upper connecting nuts 26 of the three "misaligned holes" respectively, and continue to rotate downwards so that the bottom end of the adjusting screw 28 is tightly pressed against the upper surface of the lower connecting plate 22.

[0078] Loosen the three connecting bolts 27 to disengage them from the lower connecting nut 23.

[0079] Continue to tighten the three adjusting screws 28 simultaneously and equally. As the screws are pushed downwards, the reaction force of the fixed lower connecting plate will lift the upper connecting plate 25 and the photovoltaic panel support column 24 fixed to it upwards together.

[0080] Once the desired height is reached, stop turning. At this point, a gap will appear between the upper and lower connecting plates.

[0081] Finally, reinstall connecting bolt 27 to complete the lifting adjustment.

[0082] Technical effects: Stepless precision adjustment: By controlling the amount of screwing in the adjusting screw 28, the column height can be continuously and precisely raised to compensate for any amount of settlement.

[0083] Simple structure and easy operation: By simply turning a screw, the heavy-duty column can be lifted through the self-locking property of the screw pair, without the need for external tools such as jacks, making the operation very labor-saving and convenient.

[0084] Double locking for safety and reliability: After adjustment, the connecting bolt 27 bears the vertical pressure, while the adjusting screw 28 provides auxiliary support. Even if the connecting bolt is loose, the upper column will not suddenly fall, ensuring high safety.

[0085] The ingenuity of the staggered hole design lies in its physical separation of the positioning function (corresponding hole) and the adjustment function (staggered hole), which avoids the complex stress state of applying tension and adjustment force simultaneously on a single bolt. The design is ingenious and the force distribution is clear.

[0086] In some embodiments, a support sleeve 29 is fitted onto the connecting bolt 27, and the support sleeve 29 is supported between the lower connecting plate 22 and the upper connecting plate 25.

[0087] During height adjustment, after the upper connecting plate 25 is raised to the target height, before tightening the connecting bolt 27, a support sleeve 29 with a length precisely equal to the current gap between the upper and lower connecting plates is placed between the upper and lower connecting plates. Then, the connecting bolt 27 is passed through the holes in the upper and lower connecting plates and the support sleeve and tightened. Finally, the support sleeve 29 is pressed between the upper and lower connecting plates.

[0088] Technical effects: Rigid support: The support sleeve 29 becomes a rigid pressure-bearing component, directly bearing all the vertical pressure from the upper connecting plate 25, while the connecting bolt 27 only needs to provide preload to keep the sleeve stable, and hardly bears shear force and pressure, which greatly improves the stress state of the bolt.

[0089] Improved stability: Compared to bolted connections alone, the addition of sleeves transforms the connection between the upper and lower connecting plates into a "rigid" column support, which is more resistant to lateral vibration and impact.

[0090] Achieve precise, stepped adjustment: By prefabricating a series of standard support sleeves 29 of different lengths, the column can be quickly and accurately locked at several preset heights, making the adjustment work more standardized and quantifiable.

[0091] Preventing loosening: The presence of the support sleeve 29 ensures that the preload of the connecting bolt 27 will not decrease rapidly due to long-term vibration, because the sleeve directly shares the pressure.

[0092] Multiple tightening screws 6 are threaded circumferentially onto the wall of the lower support column 21, and these screws 6 abut against the outer wall of the upper support column 24 of the photovoltaic panel.

[0093] After adjusting and locking the height of the photovoltaic panel support column 24, tighten the multiple tightening screws 6 that are circumferentially distributed on the wall of the support column tube 21, so that their tips are firmly pressed against the outer wall of the inner photovoltaic panel support column 24.

[0094] Technical effects: Eliminating radial clearance: Even if there are tiny machining or installation gaps between the upper and lower columns, the tightening screw 6 can completely eliminate them, ensuring that the two columns are concentric and improving the straightness and bending stiffness of the entire column.

[0095] Providing frictional locking force: The radial pressure generated by the tightening screw 6 produces a huge static friction force between the contact surfaces of the upper and lower columns. This frictional force can help the connecting bolt 27 bear part of the vertical load and torque, forming a double locking, which is especially effective in preventing the column from rotating under wind vibration.

[0096] Improved vibration resistance: Multi-point radial clamping provides additional lateral support points for the slender upper column, changing its slenderness ratio and significantly improving the column's ability to resist wind-induced vibration, thus reducing the swaying of the photovoltaic panels.

[0097] Simple structure and low cost: Only a few screws are needed, and no complex guide or keyway structure is required to achieve high-precision centering and locking.

[0098] The photovoltaic support for sandy land proposed in this application has a complete working process that can be divided into three main parts: on-site installation, service protection, and operation and maintenance adjustment.

[0099] I. On-site installation phase Step 1: Measurement, layout, and point determination Based on the photovoltaic power station design drawings, determine the center point of each photovoltaic support foundation and the boundary line of the surrounding soil erosion prevention fence on site. Ensure that the layout of each point meets the design requirements.

[0100] Step 2: Construction of fencing to prevent soil erosion Install corner fence posts: At the four corner points (or circumference division points) of the determined fence boundary, use piling equipment to vertically drive multiple corner fence posts 11 into the soil (sand) until the design depth is reached to ensure stability.

[0101] Install the side panels of the retaining wall: Insert the prefabricated side panels 12 into the soil between two adjacent corner retaining posts 11, embedding their lower parts into the sand. At the same time, fix the two sides of the side panels 12 to the corner retaining posts 11 with bolts or other means to form a continuous retaining wall.

[0102] Installation of side fencing posts: Side fencing posts 13 are driven into the soil at the center or critical stress points of each side fencing panel 12 and fixedly connected to the side fencing panel 12. These side fencing posts serve as a reinforcing framework for the side fencing panels and are also key nodes for subsequent connection of the diagonal bracing beams.

[0103] Install reinforcing beams: At the top of all corner fence posts 11, use reinforcing beams 4 to fix the tops of adjacent posts together to form a closed top frame, enhancing the overall integrity of the fence.

[0104] Laying sand-proof dense mesh netting: On the ground surface of the area enclosed by the side panels 12 of the enclosure, sand-proof dense mesh netting 5 is laid out in its entirety and fixed with U-shaped nails or soil covering to ensure that the dense mesh netting is tightly attached to the ground surface.

[0105] Step 3: Construction of the central support column Install the support column pipe: At the center of the soil erosion prevention fence 1, drive the support column pipe 21 vertically into the soil until it reaches the design elevation. The upper end of the support column pipe should protrude above the ground to a certain height.

[0106] Fixed lower connecting plate: The upper end of the supporting lower column tube 21 has been pre-welded or fixed on site with a lower connecting plate 22. The lower connecting plate has a insertion hole 221 in the center, and three downward through holes 222 and corresponding lower connecting nuts 23 are evenly distributed.

[0107] Step 4: Connect the diagonal bracing beam Multiple diagonal bracing beams 3 are used, with one end fixedly connected to the side enclosure column 13 and the other end fixedly connected to the wall of the supporting column pipe 21. The diagonal bracing beams are evenly distributed circumferentially, forming a radial stable support system.

[0108] Step 5: Install the photovoltaic panel support column Inserting the upper column: Pass the lower part of the photovoltaic panel support upper column 24 through the insertion hole 221 of the lower connecting plate 22 and insert it into the upper pipe opening of the support lower column tube 21. The upper connecting plate 25 has been pre-welded and fixed to the outer wall of the photovoltaic panel support upper column 24.

[0109] Aligning the holes: Rotate the upper column 24 of the photovoltaic panel support so that the three upper through holes 251 on the upper connecting plate 25 are precisely aligned vertically with the three lower through holes 222 on the lower connecting plate 22. At this time, the other three upper through holes 251 on the upper connecting plate 25 are suspended without corresponding lower holes.

[0110] Initial fixing: Pass the three connecting bolts 27 through the aligned upper and lower through holes respectively, and pre-tighten them with the lower connecting nut 23 to make the upper connecting plate 25 fit with the lower connecting plate 22, thus completing the initial positioning of the photovoltaic panel support column 24.

[0111] Tighten the top screws: Tighten the multiple top screws 6 distributed circumferentially on the wall of the lower support column 21 so that their tips press against the outer wall of the upper photovoltaic support column 24 inside, eliminating radial gaps.

[0112] Step 6: Install photovoltaic panels Install the photovoltaic panel bracket and photovoltaic panel assembly on the top of the column 24 supporting the photovoltaic panel to complete the installation of the entire photovoltaic bracket.

[0113] II. Service Protection Phase During the normal operation of the photovoltaic power station, the soil erosion prevention barrier of this application continues to play a protective role: Scenario 1: When sandstorms strike When a sand-laden windblown stream blows across the ground, it first encounters the obstruction of the soil erosion prevention barrier 1. The vertical barrier formed by the side panels 12 of the barrier and the corner / side barrier posts 11 and 13 significantly reduces the wind speed near the ground and forces the sand-laden stream to detour.

[0114] The presence of the enclosure effectively prevents external sand from migrating inwards and also prevents internal sand from being carried away by the wind, thus protecting the soil inside the enclosure from erosion.

[0115] The sand-proof mesh netting 5 laid on the ground further increases the surface roughness and solidifies the surface sand. Even if a small amount of wind enters the enclosure, it cannot blow up the sand particles covered by the mesh netting.

[0116] Scenario 2: When subjected to wind load The wind load acting on the photovoltaic panels is transferred to the foundation through the columns. At the same time, the soil erosion prevention fence 1 also bears the direct wind pressure.

[0117] The diagonal bracing beam 3 efficiently transmits the lateral force borne by the fence to the central support column pipe 21, while the central column also provides lateral support to the fence through the diagonal bracing beam.

[0118] The entire system forms a spatial truss structure of "enclosure-diagonal bracing-central column" to jointly resist wind loads and ensure the overall stability of the photovoltaic support.

[0119] Scenario 3: When the foundation undergoes natural settlement or uplift In desert environments, although fencing significantly reduces wind erosion, the deep foundation soil may still experience minor uneven settlement or frost heave due to compaction, changes in humidity, etc.

[0120] Since the supporting column of this application consists of upper and lower sections, the settlement or heave of the foundation mainly affects the absolute elevation of the lower supporting column pipe 21 buried underground, while the elevation of the upper supporting column 24 of the photovoltaic panel and the photovoltaic panel above it has not changed. At this time, a relative displacement occurs between the upper and lower columns, which is manifested as an increase or decrease in the gap between the upper connecting plate 25 and the lower connecting plate 22.

[0121] III. Operation and Maintenance Adjustment Phase When maintenance personnel discover significant unevenness (uneven settlement) in the photovoltaic array during inspections, adjustments can be made according to the following steps: Adjustment Scenario A: The height of the photovoltaic panels needs to be increased after settling. Preparation: Loosen the tightening screws 6 on the wall of the upper column 24 of the photovoltaic panel support to separate it from the inner column.

[0122] Screw in the adjusting screws: Screw the three adjusting screws 28 into the three "misaligned holes" of the upper connecting nut 26 on the upper connecting plate 25 respectively, and screw them down until the bottom of the screws is tightly pressed against the upper surface of the lower connecting plate 22.

[0123] Unlock the connecting bolts: Use a wrench to loosen the three connecting bolts 27 so that the connecting bolts 27 are detached from the lower connecting nut 23.

[0124] Lifting operation: Continue to tighten the three adjusting screws 28 synchronously and equally. The adjusting screws press down against the lower connecting plate 22. Due to the interaction of forces, the screws lift the upper connecting plate 25 together with the photovoltaic panel support column (24) upward.

[0125] Measurement and positioning: Use a level to measure the height of the photovoltaic panel. Once the panel is raised to the target height (after compensating for the settlement), stop turning the adjusting screw.

[0126] Place the support sleeves: At this point, a gap appears between the upper connecting plate 25 and the lower connecting plate 22. Take three support sleeves 29 with a length equal to this gap and fit them onto the connecting bolts 27.

[0127] Final locking: Tighten the three connecting bolts 27 downwards to lock them in place with the lower connecting nut 23. The support sleeve 29 is then firmly pressed between the upper and lower connecting plates, becoming a rigid support. Finally, retighten the top screw 6 to complete the lifting adjustment.

[0128] Adjustment Scenario B: After the panel is raised, the height of the photovoltaic panel needs to be reduced (at this time, there will be a gap between the upper and lower connecting panels). Preparation: Screw in the adjusting screw: Screw the adjusting screw 28 into the misalignment hole and press it against the lower connecting plate 22.

[0129] Prepare three shorter support sleeves 29, the length of which is equal to the required reduction height, and remove the tightening screws 6.

[0130] Unload and insert the sleeve: Loosen the connecting bolt 27 so that it comes out of the lower connecting nut 23, and remove the support sleeve on the connecting bolt 27. Then, put the prepared short support sleeve 29 onto the connecting bolt 27.

[0131] Lowering operation: Loosen the adjusting screws 28 synchronously and equally to slowly lower the upper connecting plate 25 until the lower surface of the upper connecting plate 25 is pressed tightly against the upper end surface of the support sleeve 29.

[0132] Final locking: Tighten connecting bolt 27 downwards to lock the entire connection. Finally, retighten the top screw 6 to complete the lowering adjustment.

[0133] By following the steps above, the height of one or more photovoltaic support columns can be adjusted quickly and accurately without disassembling the photovoltaic panels or using large lifting equipment, so that the entire photovoltaic array can be restored to a flat position, ensuring the safe and efficient operation of the power station.

[0134] This invention achieves the dual technical effects of "active protection" and "active settlement adjustment" in desert sandstorm environments through the coordinated design of anti-soil loss enclosures and height-adjustable support columns. It fundamentally solves the fatal defects of traditional photovoltaic brackets in sandy environments, such as foundation instability and uncontrollable settlement, and provides a reliable technical solution for the long-term safe, efficient and economical operation of photovoltaic power stations in desert areas.

[0135] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0136] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A photovoltaic support structure for use in sandy areas, characterized in that, include: A soil erosion prevention barrier (1) is inserted into the soil (100); A photovoltaic panel height-adjustable support column (2) is located inside the soil erosion prevention fence (1) and inserted into the soil (100). Multiple inclined bracing beams (3) are circumferentially fixed between the photovoltaic panel height-adjustable support column (2) and the soil erosion prevention fence (1).

2. A photovoltaic support for sandy land according to claim 1, characterized in that, The soil erosion prevention enclosure (1) includes: Corner fencing posts (11), wherein multiple corner fencing posts (11) are arranged circumferentially and inserted into the soil (100); The fence side panel (12) is multiple, each fence side panel (12) is fixed between two adjacent corner fence posts (11), and each fence side panel (12) is inserted into the soil (100); Side fencing posts (13), there are multiple side fencing posts (13), each side fencing post (13) is inserted into the soil (100), and each side fencing post (13) is fixedly connected to its corresponding side fencing plate (12), and each side fencing post (13) is fixedly connected to the photovoltaic panel height adjustable support post (2) through the diagonal bracing beam (3).

3. A photovoltaic support for sandy land according to claim 2, characterized in that, A reinforcing beam (4) is fixed between the tops of two adjacent corner fence posts (11).

4. A photovoltaic support for sandy land according to claim 2, characterized in that, A sand-proof mesh net (5) is laid on the soil (100) located between the multiple fence side panels (12) to prevent sand loss and reduce wind erosion of the sandy land.

5. A photovoltaic support for sandy land according to any one of claims 2-4, characterized in that, The height-adjustable support column (2) for the photovoltaic panel includes: A supporting lower column pipe (21) is located inside the side plate (12) of the enclosure and is inserted into the soil (100). Multiple inclined bracing beams (3) are circumferentially connected between the supporting lower column pipe (21) and the side enclosure column (13). A lower connecting plate (22) is fixed at the upper end of the supporting lower column pipe (21). The top of the lower connecting plate (22) has an insertion hole (221) arranged coaxially with the upper opening of the supporting lower column pipe (21). Three lower through holes (222) are evenly distributed on the outer periphery of the insertion hole (221) on the top of the lower connecting plate (22). A lower connecting nut (23) is fixed on the lower edge of each lower through hole (222). A photovoltaic panel support column (24) is inserted into the insertion hole (221) and the upper pipe opening in sequence at the bottom of the photovoltaic panel support column (24). An upper connecting plate (25) is fitted on the bottom outer wall of the photovoltaic panel support column (24). Six upper through holes (251) are evenly distributed on the top of the upper connecting plate (25). An upper connecting nut (26) is fixed on the upper edge of each upper through hole (251). Among them, the three upper through holes (251) and the three lower through holes (222) are respectively aligned, the connecting bolt (27) is screwed to the upper connecting nut (26) and passes through the upper through hole (251), and the lower through hole (222) is screwed to the lower connecting nut (23); The other three upper through holes (251) and the three lower through holes (222) are arranged in a staggered manner. The adjusting screw (28) is screwed onto the upper connecting nut (26) and passes through the upper through hole (251) to abut against the top surface of the lower connecting plate (22).

6. A photovoltaic support for sandy land according to claim 5, characterized in that, A support sleeve (29) is fitted onto the connecting bolt (27), and the support sleeve (29) is supported between the lower connecting plate (22) and the upper connecting plate (25).

7. A photovoltaic support for sandy land according to claim 5, characterized in that, The lower support column tube (21) has multiple tightening screws (6) threaded circumferentially on its tube wall, and the multiple tightening screws (6) abut against the outer wall of the upper support column (24) of the photovoltaic panel.

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