Lightweight unadjusted single-column photovoltaic support based on super-weather-resistant steel

Abstract

The utility model relates to support technical field especially based on lightweight exempt from adjusting single stand column type photovoltaic support of super weather -resistant steel. Its main aim at the single stand column type photovoltaic support because of single point support characteristic exists inclined beam easy to deviate and sink, the high cost of secondary adjustment, the poor weather resistance of ordinary carbon steel, the high maintenance cost, short life, and the low transportation installation efficiency of thick wall carbon steel heavy weight problem, propose the following technical scheme including concrete pedestal, the position setting of concrete pedestal has the support stand when pouring, install the stand column on the top of support stand, install the stand column on the top and have the connecting frame, the connecting frame is connected with inclined beam, the support component is connected between support stand and inclined beam, and the support component is used for supporting inclined beam. The utility model can realize single stand column type photovoltaic support stable exemption from adjusting, weather -resistant long -term effect, lightweight easy to dress, reduce secondary adjustment, maintenance and transportation installation cost, prolong the service life.

Description

Technical Field

[0001] This utility model relates to the field of bracket technology, and in particular to a lightweight, adjustable single-column photovoltaic bracket based on super weathering steel. Background Technology

[0002] Single-column photovoltaic (PV) supports, requiring only a single column for support, offer advantages such as small footprint and strong adaptability to terrain, making them the mainstream choice for space-constrained environments like mountains and rooftops. However, existing single-column PV supports suffer from the following specific challenges in practical applications due to their "single-point support" structural characteristics: Traditional single-column brackets have a diagonal beam connected to the column at only one point without any additional stabilizing structure. When installing photovoltaic modules or bearing loads such as wind or the weight of the modules, the diagonal beam is prone to angular displacement or sinking around the column. Moreover, the problem can only be discovered after the modules are installed. Adjusting a single-column bracket requires removing the modules, and the cost of secondary adjustment is more than 40% higher than that of a multi-column bracket. It is also easy to damage the modules.

[0003] Existing single-column supports mostly use Q235 ordinary carbon steel, which is exposed to high temperature, high humidity and salt spray environment outdoors for a long time. As the only load-bearing component, the single column is prone to strength reduction after corrosion, and anti-corrosion maintenance is required every 2 to 3 years. The total life cycle maintenance cost is 60% higher than that of super weathering steel supports. Especially in coastal areas, the life of ordinary carbon steel single columns is only 8 to 10 years, which is far less than the 25-year design life of power plants.

[0004] To ensure load-bearing capacity, traditional single-column supports are made of thick-walled carbon steel (6-8mm thick), with each column weighing 40-50kg. During transportation, each column needs to be packaged separately, increasing transportation costs by 25% compared to lightweight supports. Furthermore, when installing single columns in mountainous or rooftop locations, where there is no large hoisting equipment, manual handling of thick-walled columns is inefficient, and the installation time for a single column is more than 30 minutes longer than that of lightweight columns.

[0005] Current industry improvements to "adjustment-free" photovoltaic (PV) brackets primarily target multi-column structures, failing to address the core pain points of single-column brackets due to their "single-point support and independent load-bearing" characteristics. Furthermore, the lack of deep integration of super weather-resistant steel with the lightweight, adjustment-free structure of single-column brackets makes existing solutions inadequate for meeting the requirements of "stable and adjustment-free, weather-resistant and long-lasting, lightweight and easy-to-install" single-column PV brackets. Therefore, this invention proposes a lightweight, adjustment-free single-column PV bracket based on super weather-resistant steel. Utility Model Content

[0006] The object of the present utility model is to provide a lightweight adjustment-free single-column photovoltaic support based on super weathering steel, aiming at the problems in the background art that the existing single-column photovoltaic support has the characteristics of single-point support, which leads to easy deflection and sinking of the inclined beam, high cost of secondary adjustment, poor weather resistance of ordinary carbon steel, high maintenance cost, short service life, and large weight of thick-walled carbon steel and low transportation and installation efficiency.

[0007] The technical solution of the present utility model is: a lightweight adjustment-free single-column photovoltaic support based on super weathering steel, comprising a concrete base, wherein a supporting column is arranged at the position of the concrete base during pouring; a mounting column mounted on the top of the supporting column, a connecting frame is mounted on the top of the mounting column, and an inclined beam is connected to the connecting frame; a supporting assembly connected between the supporting column and the inclined beam, the supporting assembly being used for supporting the inclined beam; a mounting base mounted on the tops of a plurality of groups of the inclined beams, the mounting base being used for mounting photovoltaic modules; a purlin bar connected in the mounting base, the purlin bar being used for improving the strength of the mounting base.

[0008] Optionally, the connecting frame is arranged in a "冂" shape, and the connecting frame is mounted on the top of the mounting column by fasteners.

[0009] Optionally, the inclined beam is assembled with the connecting frame through fasteners.

[0010] Optionally, the supporting assembly comprises two groups of hoops, the two groups of hoops are symmetrically arranged on both sides of the supporting column, multiple groups of locking holes are respectively opened at both ends of the hoops, fasteners are penetrated in the locking holes for locking the two groups of hoops, two groups of supporting beams are connected through fasteners at the same time, the two groups of supporting beams are respectively arranged on both sides of the supporting column, and the ends of the two groups of supporting beams far away from the hoops are connected with the inclined beam through fasteners.

[0011] Optionally, the supporting column, the mounting column, the connecting frame, the inclined beam and the supporting beam are all made of Q355NH weathering steel, and a plurality of hollow holes are opened in the non-force-bearing area of the inclined beam.

[0012] Optionally, a plurality of groups of connecting holes arranged at equal intervals are opened on the inclined beam, and the supporting beam is connected to the positions of the connecting holes through fasteners.

[0013] Optionally, the mounting base comprises a plurality of groups of purlins, a purlin bracket is arranged on the side surface of the purlin, the purlin bracket is connected with the inclined beam through a fastener, a fourth mounting hole is also opened on the side of the purlin bracket close to the purlin, a plurality of groups of first mounting holes distributed in an equidistant array are opened on the side surface of the purlin, and the first mounting hole and the fourth mounting hole are connected through a fastener.

[0014] Optionally, a connecting piece is sleeved at the connection position of two end-to-end purlins, the connecting piece is arranged in a "凵" shape, a plurality of groups of through holes are formed on three side surfaces of the connecting piece, second mounting holes corresponding to the through holes are formed at two ends of the purlins, and the through holes and the second mounting holes are connected by fasteners.

[0015] Optionally, the brace is arranged between two groups of purlins arranged in parallel, two ends of the brace are respectively and fixedly connected with fixing blocks, a screw rod is fixedly connected to one side of the fixing block away from the brace, a tension nut is threadedly connected to the screw rod, and the tension nut is located on one side of the purlin away from the brace.

[0016] Optionally, a plurality of third mounting holes are formed on the side surface of the purlin, and the screw rod penetrates through the third mounting holes.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: The utility model forms a triangular stable structure with the support beam through two sets of hoops of the support assembly, which can disperse the load borne by the inclined beam, prevent the inclined beam from shifting or sinking around the support column, and ensure no obvious displacement; meanwhile, the inclination angle of the inclined beam fitting surface is preset in the factory, and the positioning hole at the top of the support column realizes the height adjustment of the installed column, no on-site adjustment of the inclination angle is required, avoiding secondary demolition and adjustment after component installation, and reducing the cost of secondary adjustment; Furthermore, the hollow design of the inclined beam reduces the weight, the weight of a single stand column is greatly reduced, the transportation cost is reduced, and the manual installation time on mountain roofs is shortened; all components are made of Q355NH steel and passivated, the salt spray resistance is enhanced, the service life in coastal areas can reach the 25-year design life of the power station, and the life cycle maintenance cost is lower than that of ordinary carbon steel supports; In summary, the utility model can realize stable adjustment-free, weather-resistant long-acting, lightweight and easy-to-install single-column photovoltaic support, reduce the costs of secondary adjustment, maintenance, transportation and installation, and prolong the service life. Description of Drawings

[0018] Figure 1 is a structural schematic diagram of the lightweight adjustable-free single-column photovoltaic support based on super weathering steel; Figure 2 is Figure 1 a front elevation schematic diagram; Figure 3 is Figure 1 an enlarged schematic diagram of position A in; Figure 4 is Figure 1 an enlarged schematic diagram of position B in; Figure 5 is Figure 1 an enlarged schematic diagram of position C in .

[0019] Description of Reference Numerals: 1. Concrete base; 2. Supporting column; 21. Positioning hole; 3. Install the uprights; 4. Connect the frame; 5. Diagonal beam; 51. Connecting holes; 6. Support components; 61. Clamps; 62. Locking holes; 63. Support beams; 7. Mounting base; 71. Sandalwood strip; 711. First mounting hole; 712. Second mounting hole; 713. Third mounting hole; 72. Sandalwood support; 721. Fourth mounting hole; 73. Connector; 731. Through hole; 8. Tie rod; 81. Fixing block; 82. Screw; 83. Tightening nut. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0022] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Examples

[0026] As Figure 1 and Figure 2 shown, the lightweight non-adjustment single-column photovoltaic support based on super weathering steel provided by the utility model comprises a concrete base 1, and a support column 2 is arranged at the position of the concrete base 1 when the concrete base 1 is poured. The support column 2 is made of Q355NH super weathering steel thin-walled seamless steel pipe with an outer diameter of 114 mm, which adapts to the bearing requirement of a single column. Through ANSYS stress simulation: when bearing the load of two 600W photovoltaic modules, the maximum stress of the outer diameter is ≤ 300 MPa, which is less than the yield strength of 345 MPa of Q355NH. With a wall thickness of 3 to 5 mm, the wall thickness is reduced by 30% to 40% compared with that of a traditional carbon steel single column. The outer peripheral surface of the support column 2 can be processed with M110×3 external threads to adapt to cylindrical mounting members according to installation requirements, or a smooth surface can be retained to adapt to groove-type mounting members. The surface is subjected to passivation treatment, and the passivation film has a thickness of 5-8 μm, which enhances the salt spray resistance. The support column 2 serves as the only load-bearing foundation of the single-column support, and is vertically fixed on the concrete base 1 or a screw pile, and transmits the load of the entire support, including the weight of the components and wind force, to the foundation through a single point. It is necessary to ensure that the verticality deviation is ≤ 1° to avoid eccentric stress on the support column 2. A plurality of groups of positioning holes 21 are arranged at the top of the support column 2, which are used for screwing and fixing the mounting column 3 by threaded connecting bolts.

[0027] Further, the above support comprises a mounting column 3 mounted on the top of the support column 2, and the mounting column 3 is made of Q355NH super weathering steel. A connecting frame 4 is mounted on the top of the mounting column 3, the connecting frame 4 is arranged in an inverted "U" shape, the connecting frame 4 is mounted on the top of the mounting column 3 by fasteners, and an oblique beam 5 is connected to the connecting frame 4, and the oblique beam 5 is assembled with the connecting frame 4 through fasteners.

[0028] The inclined beam 5 is made of Q355NH super weathering steel angle steel, L-shaped steel plate, or T-shaped steel plate, with a thickness of 3-5mm. One to two 10mm diameter perforations are made in non-load-bearing areas, with a perforation rate of 10%-15%. Stress analysis shows that the bending strength of the mounting components decreases by ≤5% after perforation, and the weight is reduced by 18%, avoiding redundant weight in the single-column bracket system. Based on the optimal tilt angle of the photovoltaic modules in the single-column bracket installation area (e.g., 25°-35° north latitude), the contact angle of the inclined beam 5 is pre-cut at the factory to ensure that the tilt angle deviation of the support beam 63 and connecting frame 4 is ≤0.5° after installation, eliminating the need for on-site adjustment. The contact surface of the inclined beam 5 is textured with anti-slip grooves, 0.5mm deep, to enhance friction and prevent slippage. The support beam 63 and the connecting frame 4 are fastened with M10×30 Q355NH super weathering steel bolts. The bolts are equipped with spring washers to prevent the single column support from loosening due to vibration. Alternatively, they can be fixed by welding with a welding height ≥5mm and a weld length ≥30mm to meet the strength requirements of single column single point force transmission.

[0029] Please see Figures 1 to 3 The aforementioned support includes a support assembly 6 connecting the support column 2 and the inclined beam 5. The support assembly 6 is used to support the inclined beam 5. The support assembly 6 includes two sets of clamps 61, which are symmetrically arranged on both sides of the support column 2. Multiple sets of locking holes 62 are opened at both ends of the clamps 61. Fasteners are inserted through the locking holes 62 to lock the two sets of clamps 61. At the same time, two sets of support beams 63 are connected by fasteners. The two sets of support beams 63 are respectively arranged on both sides of the support column 2. The ends of the two sets of support beams 63 away from the clamps 61 are connected to the inclined beam 5 by fasteners.

[0030] The support beam 63 is made of Q355NH super weathering steel flat steel, with a width of 30-50mm and a thickness of 3-4mm. There are two beams, which are diagonally connected between the support column 2 and the inclined beam 5, and are symmetrically distributed on both sides of the support column 2, forming a triangular stable structure with an angle of 40°-50° to the axis of the support column 2. This compensates for the insufficient rigidity of the single-point support of the single column bracket, distributes the load on the inclined beam 5 such as wind force and component weight, prevents the inclined beam 5 from bending, deforming or sinking, and ensures that the single column bracket has no significant displacement under wind force 8.

[0031] Furthermore, such as Figure 4As shown, the above-mentioned bracket includes a mounting base 7 installed on the top of multiple sets of inclined beams 5. The mounting base 7 is used to install photovoltaic modules. Multiple sets of equidistant connecting holes 51 are opened on the inclined beams 5. The support beam 63 is connected to the connecting hole 51 by fasteners. The mounting base 7 includes multiple sets of purlins 71. Purlins 72 are provided on the side of the purlins 71. The purlins 72 are connected to the inclined beams 5 by fasteners. A fourth mounting hole 721 is also opened on the side of the purlins 72 near the purlins 71. Multiple sets of equidistant arrayed first mounting holes 711 are opened on the side of the purlins 71. The first mounting holes 711 and the fourth mounting holes 721 are connected by fasteners. A connector 73 is sleeved at the connection position of two sets of purlins 71 connected end to end. The connector 73 is arranged in the shape of "U". Multiple sets of through holes 731 are opened on the three sides of the connector 73. Second mounting holes 712 corresponding to the through holes 731 are opened at both ends of the purlins 71. The through holes 731 and the second mounting holes 712 are connected by fasteners. For further details, please refer to Figure 5 The aforementioned bracket includes a pull bar 8 connected to the mounting base 7. The pull bar 8 is used to improve the strength of the mounting base 7. The pull bar 8 is positioned between two sets of parallel purlins 71. Fixing blocks 81 are fixedly connected to both ends of the pull bar 8. A screw 82 is fixedly connected to the side of the fixing block 81 away from the pull bar 8. A tension nut 83 is threaded onto the screw 82. The tension nut 83 is located on the side of the purlin 71 away from the pull bar 8. Multiple sets of third mounting holes 713 are opened on the side of the purlin 71. The screw 82 passes through the third mounting holes 713.

[0032] All the fasteners mentioned above are made of Q355NH super weathering steel bolts, with nuts of the same material. The bolt shank diameter is M8-M12, which can be selected according to the required diameter. The surface is passivated to avoid corrosion from foreign metals.

[0033] In this embodiment, the foundation bearing capacity and load transfer starting point are initially formed by the concrete base 1 and the supporting column 2. The concrete base 1 provides stable foundation support for the entire support system. The supporting column 2, as the sole load-bearing foundation, is vertically fixed to the concrete base 1 or helical piles, with a verticality deviation of ≤1° to avoid eccentric stress. After the photovoltaic modules are installed on the support system, the weight of the modules, wind force, and other loads first act on the mounting base 7, and then are transferred to the inclined beam 5 through the mounting base 7. The inclined beam 5 further transmits the load to the connecting frame 4, and the connecting frame 4 then transmits the load to the mounting column 3. Finally, the mounting column 3 transmits the load to the supporting column 2, and the supporting column 2 transfers the entire load of the support system to the concrete base 1 or helical piles through a single point, completing the complete load transfer path from the modules to the foundation.

[0034] Two sets of clamps 61 of the support component 6 are symmetrically fixed to both sides of the support column 2. The clamps 61 are locked and connected to the two sets of support beams 63 using fasteners in the locking holes 62. The two sets of support beams 63 are obliquely connected between the support column 2 and the inclined beam 5, and the angle between them and the axis of the support column 2 is maintained at 40°-50°, forming a stable triangular structure. This structure can effectively compensate for the lack of rigidity of a single column and single-point support, distribute the load borne by the inclined beam 5, prevent the inclined beam 5 from shifting or sinking around the support column 2, and ensure that the support has no significant displacement under wind force 8. At the same time, the anti-slip texture on the contact surface of the inclined beam 5 can enhance the friction with the connecting frame 4, further preventing slippage; the M10×30Q355NH super weathering steel bolts connecting the inclined beam 5 and the support beam 63 and the connecting frame 4 are equipped with spring washers to prevent the support from loosening due to vibration. The welding height ≥5mm and the weld length ≥30mm during welding fixation ensure the strength requirements of single-point force transmission.

[0035] The support column 2 is made of Q355NH super weathering steel thin-walled seamless tube, which reduces the wall thickness by 30% to 40% compared to traditional carbon steel single columns. Furthermore, the weight of the inclined beam 5, with its perforated holes in non-load-bearing areas, is reduced by 18%. Both of these factors contribute to reducing the overall weight redundancy of the support structure. The 114mm outer diameter of the support column 2 has been verified by ANSYS stress simulation, showing a maximum stress ≤300MPa when bearing the load of two 600W photovoltaic modules. The bending strength of the inclined beam 5 decreases by ≤5% after being perforated, ensuring that the lightweight design does not compromise the structural load-bearing capacity. In addition, the support column 2, mounting column 3, inclined beam 5, support beam 63, and all fasteners are made of Q355NH super weathering steel. The surface of the support column 2 is passivated to enhance its salt spray resistance, preventing corrosion problems caused by long-term outdoor exposure and extending the service life of the support structure.

[0036] Multiple positioning holes 21 on the top of the support column 2 facilitate the tightening and fixing of the mounting column 3 with bolts, enabling adjustment of the installation height. The factory pre-cuts the contact angle of the inclined beam 5 according to the optimal tilt angle of the photovoltaic modules in the installation area, ensuring that the tilt angle deviation after installation is ≤0.5°, eliminating the need for on-site adjustments. The outer circumference of the support column 2 can be machined with M110×3 external threads to adapt to cylindrical mounting parts or retain a smooth surface to adapt to slotted mounting parts, meeting the needs of different installation scenarios and improving construction efficiency.

[0037] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A lightweight, adjustable, single-column photovoltaic support based on super weathering steel, characterized in that, Comprising: a concrete base (1), wherein a support column (2) is arranged at the position of the concrete base (1) during pouring; a mounting column (3) mounted on the top of the support column (2), a connecting frame (4) is mounted on the top of the mounting column (3), and an inclined beam (5) is connected to the connecting frame (4); a support assembly (6) connected between the support column (2) and the inclined beam (5), wherein the support assembly (6) is configured to support the inclined beam (5); a mounting base (7) mounted on the top of multiple groups of the inclined beams (5), wherein the mounting base (7) is configured to mount photovoltaic modules; a purlin (8) connected in the mounting base (7), wherein the purlin (8) is configured to improve the strength of the mounting base (7).

2. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 1, characterized in that, The connecting frame (4) is arranged in a 冂 shape, and the connecting frame (4) is mounted on the top of the mounting column (3) by fasteners.

3. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 2, characterized in that, The inclined beam (5) is assembled with the connecting frame (4) through fasteners.

4. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 3, characterized in that, The support assembly (6) comprises two sets of hoops (61), the two sets of hoops (61) are symmetrically arranged on both sides of the support column (2), multiple sets of locking holes (62) are respectively formed at both ends of the hoops (61), fasteners are penetrated in the locking holes (62) to lock the two sets of hoops (61), and two sets of support beams (63) are connected through the fasteners, the two sets of support beams (63) are respectively arranged on both sides of the support column (2), and ends of the two sets of support beams (63) away from the hoops (61) are both connected with the inclined beam (5) through fasteners.

5. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 4, characterized in that, The support column (2), the mounting column (3), the connecting frame (4), the inclined beam (5) and the support beam (63) are all made of Q355NH weather-resistant steel, and a plurality of hollow holes are formed in non-stress regions of the inclined beam (5).

6. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 5, characterized in that, A plurality of sets of connecting holes (51) arranged at equal intervals are formed on the inclined beam (5), and the support beam (63) is connected to the position of the connecting holes (51) through fasteners.

7. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 6, characterized in that, The mounting base (7) comprises a plurality of sets of purlins (71), purlin brackets (72) are arranged on side surfaces of the purlins (71), the purlin brackets (72) are connected with the inclined beam (5) through fasteners, a fourth mounting hole (721) is further formed on a side of the purlin bracket (72) close to the purlin (71), a plurality of sets of first mounting holes (711) distributed in an equidistant array are formed on a side surface of the purlin (71), and the first mounting holes (711) and the fourth mounting hole (721) are connected through fasteners.

8. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 7, characterized in that, A connecting piece (73) is sleeved at the connecting position of two end-to-end connected purlins (71), the connecting piece (73) is arranged in a 凵 shape, a plurality of sets of through holes (731) are formed on three side surfaces of the connecting piece (73), second mounting holes (712) corresponding to the through holes (731) are formed at both ends of the purlin (71), and the through holes (731) and the second mounting holes (712) are connected through fasteners.

9. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 8, characterized in that, The pull bar (8) is set between two sets of parallel purlins (71). The two ends of the pull bar (8) are respectively fixedly connected to a fixing block (81). A screw (82) is fixedly connected to the side of the fixing block (81) away from the pull bar (8). A tension nut (83) is threaded onto the screw (82). The tension nut (83) is located on the side of the purlin (71) away from the pull bar (8).

10. The lightweight, adjustable single-column photovoltaic support based on super weathering steel according to claim 9, characterized in that, The side of the purlin (71) has multiple sets of third mounting holes (713), and the screw (82) passes through the third mounting holes (713).

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