A photovoltaic racking structure employing overhanging reinforcement

Abstract

The utility model relates to photovoltaic equipment field especially, and more particularly to a kind of photovoltaic support structure using overhanging reinforcement, including stand, inclined beam, purlin, inner lining and photovoltaic module, the upper end of stand is connected with inclined beam, inclined beam is laid with the purlin of length direction perpendicular to it, the part between purlin end and adjacent inclined beam is overhanging section;Purlin includes two opposite first connecting parts, two first connecting parts are opposite with inclined beam and photovoltaic module respectively, photovoltaic module is connected on first connecting part, inner lining is supported between the two first connecting parts of overhanging section;By the first connecting part between purlin overhanging section being lined with reinforcement arrangement, the flexural deformation under long cantilever is effectively inhibited, the pain point that traditional short overhanging design is forced to shorten overhanging length due to insufficient rigidity is solved, so that purlin overhanging section part has enough support strength to meet in its array boundary area to install additional photovoltaic module, improve unit land area or unit support structure on component installation capacity.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic equipment, and in particular to a photovoltaic support structure with cantilever reinforcement. Background Technology

[0002] In pursuing both economic efficiency and ease of construction, conventional photovoltaic support structures often suffer from the following key design deficiencies, which significantly impact project returns and structural efficiency.

[0003] Taking the limitation of module placement due to excessively short purlin cantilever sections as an example, to simplify the structure or reduce purlin bending moments, the cantilever lengths at both ends of the purlins are often conservatively shortened in the design. This directly leads to a compression of the available installation space at both ends of the support array. Insufficiently short cantilever sections mean that the boundary area of ​​the array cannot be fully utilized to install additional photovoltaic modules, significantly reducing the module installed capacity per unit land area or per unit support structure. In scenarios where land costs are high or high-density installation is pursued, this design flaw wastes valuable space resources, directly lowering the overall power generation revenue and return on investment of the project. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a photovoltaic support structure with cantilever reinforcement that can increase the cantilever length of the purlins and ensure that they have sufficient support performance to install additional photovoltaic modules.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a photovoltaic support structure with cantilever reinforcement, including a column, a diagonal beam, purlins, an inner liner, and a photovoltaic module. The upper end of the column is connected to the diagonal beam, and purlins perpendicular to the diagonal beam are laid on the diagonal beam. The portion between the end of the purlin and the adjacent diagonal beam is a cantilever section. The purlin includes two opposing first connecting parts, which are respectively opposite to the diagonal beam and the photovoltaic module. The photovoltaic module is connected to the first connecting parts, and the inner liner is supported between the two first connecting parts of the cantilever section.

[0006] Furthermore, the radial cross-section of the purlin is C-shaped.

[0007] Furthermore, the two ends of the C-shaped structure of the purlin extend towards each other to form rolled edges.

[0008] Furthermore, the liner has a C-shaped structure similar to that of the purlin.

[0009] Furthermore, the purlin also includes a first support portion perpendicular to the inclined beam, and both first connecting portions are perpendicular to the first support portion; the liner includes a second support portion perpendicular to the inclined beam and two second connecting portions perpendicularly connected to the second support portion; the first connecting portions are connected to the second connecting portions.

[0010] Furthermore, the first support portion and the second support portion are connected.

[0011] Furthermore, it also includes angle steel, one side of which is connected to the inclined beam and the other side is connected to the first support.

[0012] Furthermore, it also includes cross bracing, with multiple sets of purlins spaced apart along the length of the inclined beam; the cross bracing is simultaneously connected to the cantilevered sections of multiple purlins.

[0013] Furthermore, along the length of the purlin, the inclined beam is arranged in the middle of the liner, and the distance between the end of the liner near the cantilever section and the inclined beam is at least 1 / 4 of the distance of the cantilever section of the purlin.

[0014] Furthermore, the photovoltaic module includes multiple photovoltaic units, which are spaced apart along the length of the purlin; the cantilevered section of the purlin is connected to at least two photovoltaic units; and along the length of the purlin, the liner extends to the position of the photovoltaic unit furthest away from the inclined beam along the length of the purlin.

[0015] The beneficial effects of this utility model are as follows: by reinforcing the first connection between the cantilever sections of the purlins with inner lining, the flexural deformation under the long cantilever is effectively suppressed, solving the problem of the traditional short cantilever design being forced to shorten the cantilever length due to insufficient stiffness. This allows the cantilever section of the purlin to have sufficient support strength to meet the requirements of installing additional photovoltaic modules in its array boundary area, thereby increasing the module installation capacity per unit land area or per unit support structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a photovoltaic support structure with cantilever reinforcement, which is a specific embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram illustrating the structure of the photovoltaic support structure with cantilever reinforcement, including the columns, inclined beams, purlins, inner lining, and photovoltaic modules, in accordance with a specific embodiment of this utility model.

[0018] Figure 3 for Figure 2 Enlarged view at point A;

[0019] Figure 4 This is a schematic diagram of the photovoltaic module, purlin, inner lining and cross bracing of the photovoltaic support structure with cantilever reinforcement, which is a specific embodiment of this utility model.

[0020] Figure 5 for Figure 4 Enlarged view at point B;

[0021] Figure 6This is a schematic diagram of a photovoltaic support structure with a cantilevered reinforcement, in which a certain length of inner lining is arranged on the purlins.

[0022] Figure 7 This is a schematic diagram of the structure of the purlins, inner lining and cross braces of the photovoltaic support structure with cantilever reinforcement, which is a specific embodiment of this utility model.

[0023] Label Explanation:

[0024] 1. Column; 11. Front column; 12. Rear column; 13. Support column;

[0025] 2. Inclined beam;

[0026] 3. Purlin; 31. First connecting part; 32. First supporting part;

[0027] 4. Photovoltaic modules; 41. Photovoltaic units;

[0028] 5. Horizontal bracing;

[0029] 6. Lining; 61. Second connecting part; 62. Second supporting part;

[0030] 7. Angle steel. Detailed Implementation

[0031] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0032] Please refer to Figures 1 to 3 A photovoltaic support structure with cantilever reinforcement includes a column 1, a diagonal beam 2, purlins 3, an inner liner 6, and a photovoltaic module 4. The upper end of the column 1 is connected to the diagonal beam 2, and purlins 3 with a length direction perpendicular to the diagonal beam 2 are laid on the diagonal beam 2. The portion of the purlin 3 from the end to the adjacent diagonal beam 2 is a cantilever section. The purlin 3 includes two opposing first connecting parts 31, which are respectively opposite to the diagonal beam 2 and the photovoltaic module 4. The photovoltaic module 4 is connected to the first connecting parts 31, and the inner liner 6 is supported between the two first connecting parts 31 of the cantilever section.

[0033] As can be seen from the above description, the beneficial effects of this utility model are as follows: by reinforcing the first connecting part 31 of the cantilever section of the purlin 3 with the inner lining 6, the flexural deformation under the long cantilever is effectively suppressed, solving the problem of the pain point of the traditional short cantilever design being forced to shorten the cantilever length due to insufficient stiffness, so that the cantilever section of the purlin 3 has sufficient support strength to meet the installation of additional photovoltaic modules 4 in its array boundary area, thereby increasing the module installation capacity per unit land area or per unit support structure.

[0034] Furthermore, such as Figure 3As shown, the radial cross-section of the purlin 3 is C-shaped.

[0035] As can be seen from the above description, the purlin 3 with a C-shaped cross section is a common purlin 3 selection, which has reliable assembly strength, and its openings can facilitate the connection and fixation of the inner lining 6.

[0036] Furthermore, such as Figure 3 As shown, the two ends of the C-shaped structure of the purlin 3 extend towards each other to form rolled edges.

[0037] As can be seen from the above description, the rolled edge design of purlin 3 increases the moment of inertia of the profile section, thereby improving its load-bearing capacity and bending performance; in addition, it can play a certain role in limiting and preventing detachment after the inner liner 6 is assembled.

[0038] Furthermore, such as Figure 3 As shown, the inner liner 6 has a C-shaped structure similar to that of the purlin 3.

[0039] As can be seen from the above description, the C-shaped liner 6 can be adapted to the purlin 3, providing more support contact and improving the strength of the purlin 3.

[0040] Furthermore, such as Figure 3 As shown, the purlin 3 also includes a first support portion 32 perpendicular to the inclined beam 2, and the two first connecting portions 31 are both perpendicular to the first support portion 32; the liner 6 includes a second support portion 62 perpendicular to the inclined beam 2 and two second connecting portions 61 perpendicularly connected to the second support portion 62; the first connecting portion 31 is connected to the second connecting portion 61.

[0041] As can be seen from the above description, the first support part 32 of the purlin 3 serves as the main support structure between the inclined beam 2 and the photovoltaic module 4, and the design of the second support part 62 and the second connecting part 61 of the inner liner 6 can strengthen the structure between the first connecting parts 31 of the purlin 3.

[0042] Furthermore, such as Figure 3 As shown, the first support portion 32 and the second support portion 62 are connected.

[0043] As can be seen from the above description, the connection between the first support part 32 and the second support part 62 further improves the connection between the inner liner 6 and the purlin 3, as well as the load-bearing capacity and bending resistance of the purlin 3 after the connection.

[0044] Furthermore, such as Figure 3 As shown, it also includes angle steel 7, one side of which is connected to the inclined beam 2, and the other side is connected to the first support part 32.

[0045] As described above, the purlin 3 and the inclined beam 2 are connected by the angle steel 7. The angle steel 7 serves as both a connector and a lifting component to ensure sufficient installation spacing between the photovoltaic module 4 and the inclined beam 2.

[0046] Furthermore, such as Figure 4 and Figure 5 As shown, it also includes a cross brace 5, and the purlins 3 are arranged in multiple sets at intervals along the length direction of the inclined beam 2; the cross brace 5 is connected to the cantilever sections of multiple purlins 3 at the same time.

[0047] As described above, adjacent cantilever sections are connected as collaborative load-bearing units by cross bracing 5. This design creates a spatial truss effect, dispersing the load at the cantilever ends through an axial force transmission mechanism, significantly reducing the peak bending moment of a single purlin 3; it can suppress torsional deformation at the array edges, reduce the risk of component microcracks under wind-induced vibration or uneven snow load conditions, and enhance the overall lateral displacement resistance of the support system, especially for structures in mountainous, coastal, and other terrains susceptible to strong winds.

[0048] Furthermore, such as Figure 1 As shown, in the length direction of the purlin 3, the inclined beam 2 is arranged in the middle of the liner 6, and the distance between the end of the liner 6 near the cantilever section and the inclined beam 2 is at least 1 / 4 of the distance of the cantilever section of the purlin 3.

[0049] As can be seen from the above description, by designing the distance from the end of the inner lining 6 to the inclined beam 2, the overall rigidity of the structure can be guaranteed, while the inner lining 6 of the entire cantilever section can be strengthened, thereby saving steel.

[0050] Furthermore, such as Figure 1 As shown, the photovoltaic module 4 includes multiple photovoltaic units 41, which are spaced apart along the length of the purlin 3; the cantilever section of the purlin 3 is connected to at least two photovoltaic units 41; along the length of the purlin 3, the inner liner 6 extends to the position of the photovoltaic unit furthest away from the inclined beam 2 along the length of the purlin 3.

[0051] As can be seen from the above description, by setting the positions of the photovoltaic unit 41 and the inner liner 6, it can be ensured that the structure after the purlin 3 and its inner liner 6 are matched can meet the support of the additional photovoltaic unit 41 and improve space utilization.

[0052] Please refer to Figures 1 to 7 Embodiment 1 of this utility model is as follows:

[0053] like Figure 1 As shown, a photovoltaic support structure with cantilever reinforcement includes a column 1, a diagonal beam 2, a purlin 3, an inner lining 6, an angle steel 7, and a photovoltaic module 4.

[0054] like Figure 2As shown, the column 1 includes a front column 11, a rear column 12, and a supporting column 13. Multiple front columns 11 are arranged side-by-side at intervals, and multiple rear columns 12 are arranged side-by-side corresponding to the front columns 11. The front columns 11 are higher than the rear columns 12. The inclined beam 2 connects the upper ends of the front columns 11 and the rear columns 12, and the supporting column 13 connects the middle part of the inclined beam 2 to the front columns 11 and the rear columns 12.

[0055] like Figure 1 and Figure 2 As shown, multiple purlins 3, perpendicular to the length of the inclined beam 2, are laid at intervals along its length. Photovoltaic modules 4 are connected to the purlins 3, and each photovoltaic module 4 includes multiple photovoltaic units 41, which are arranged in an array on the purlins 3. Specifically, the spacing between the multiple inclined beams 2 is no greater than 200 mm, and the number is no less than three.

[0056] like Figure 3 As shown, the portion between the end of the purlin 3 and the adjacent inclined beam 2 is a cantilever section. The radial cross-section of the purlin 3 is C-shaped, and a C-shaped inner lining 6 with a similar shape is provided inside the C-shaped structure of the cantilever section of the purlin 3.

[0057] Specifically, the purlin 3 includes two opposing first connecting parts 31 and a first support part 32 perpendicular to the inclined beam 2, with both first connecting parts 31 perpendicular to the first support part 32. The first connecting part 31 on the side away from the inclined beam 2 is bolted to the photovoltaic module 4, while the first support part 32 is bolted to the inclined beam 2 via angle steel 7.

[0058] like Figure 3 As shown, the inner liner 6 includes a second support portion 62 perpendicular to the inclined beam 2 and two second connecting portions 61 perpendicularly connected to the second support portion 62. The height of the inner liner 6 section, i.e., the distance between the upper and lower ends of the two second connecting portions 61, is less than the height of the purlin 3 by twice the thickness of the purlin 3 plus 2 mm. The width of the inner liner 6 section, i.e., the distance from the end of the second support portion 62 to one side of the second connecting portion 61, is less than the width of the purlin 3 by twice the thickness of the purlin 3 plus 2 mm. This design simultaneously meets the requirements for load-bearing and installation.

[0059] The second connecting part 61 is attached to the first connecting part 31 and connected by bolts, and the second supporting part 62 is attached to the first supporting part 32 and connected by bolts.

[0060] The inner liner 6 can be prefabricated, which greatly reduces on-site welding and adjustment procedures and simplifies installation. This can shorten the installation cycle, reduce labor costs, and transform the long cantilever high-density layout from a technical advantage to an economic advantage, thus accelerating the process of photovoltaic grid parity.

[0061] In the aforementioned bolted connections, transverse elliptical openings are provided on purlin 3, while other mating parts are provided with circular openings. The transverse elliptical openings increase the tolerance for errors during installation.

[0062] Under the above design, the cantilever section of the purlin 3 can be safely extended by 30%-50%, allowing 1-2 more rows of photovoltaic modules 4 to be arranged in the edge area of ​​the array, maximizing the use of land and support space resources and increasing the installed capacity per unit area.

[0063] Example 2

[0064] The difference between this embodiment and Embodiment 1 is that:

[0065] like Figure 1 and Figure 6 As shown, the cantilever section of the purlin 3 is not reinforced with an integral inner lining 6, and the length of the inner lining 6 can be reduced. Specifically, in the length direction of the purlin 3, the inclined beam 2 is arranged in the middle of the inner lining 6, and the distance between the end of the inner lining 6 near the cantilever section and the inclined beam 2 is at least 1 / 4 of the distance of the cantilever section of the purlin 3.

[0066] Meanwhile, in the arrangement of the photovoltaic unit 41 and the cantilever section of the purlin 3, the cantilever section of the purlin 3 is connected to at least two photovoltaic units 41; in the length direction of the purlin 3, the inner lining 6 extends to the position of the photovoltaic unit furthest away from the inclined beam 2 in the length direction of the purlin 3.

[0067] The above design reduces the use of the inner lining 6 while ensuring the overall rigidity of the structure and guaranteeing the bending bearing capacity of the side span purlins 3.

[0068] Example 3

[0069] The difference between this embodiment and Embodiment 1 is that:

[0070] like Figure 4 , Figure 5 As shown, it also includes a cross brace 5, which is located at the end of multiple purlins 3 and connected to the cantilevered sections of multiple purlins 3. The addition of the cross brace 5 enhances the overall stability of the structure. Specifically, the first connecting part 31 of the purlin 3 is connected to the cross brace 5; the radial cross section of the cross brace 5 is C-shaped or L-shaped, and the above configuration facilitates construction operations.

[0071] Example 4

[0072] The difference between this embodiment and Embodiment 1 is that:

[0073] like Figure 7 As shown, the two ends of the C-shaped structure of the purlin 3 extend towards each other to form rolled edges. The rolled edge design improves its load-bearing capacity and bending resistance, and also provides a certain degree of restraint for the assembly of the inner lining 6.

[0074] In summary, the photovoltaic support provided by this utility model effectively suppresses flexural deformation under long cantilever by reinforcing the first connection between the cantilever sections of the purlins with inner lining. This solves the problem of the traditional short cantilever design being forced to shorten the cantilever length due to insufficient rigidity, and enables the cantilever section of the purlin to have sufficient support strength to meet the requirements of installing additional photovoltaic modules in its array boundary area, thereby increasing the module installation capacity per unit land area or per unit support structure.

[0075] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

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