Corrosion-resistant connecting and fastening assembly suitable for photovoltaic support system

Abstract

The utility model discloses a corrosion-resistant connecting and fastening assembly suitable for a photovoltaic support system, the photovoltaic support system comprises a main beam and a plurality of secondary beam assemblies, each secondary beam assembly comprises a secondary beam and two diagonal bracing pieces, and each secondary beam assembly is provided with a group of connecting and fastening assemblies; the connecting and fastening assemblies are integrally made of weathering steel materials, each connecting and fastening assembly comprises a connecting piece and a plurality of bolt fastening pieces, and each bolt fastening piece comprises a bolt and a nut. For any secondary beam assembly, the secondary beam, the two inclined supporting pieces and the connecting piece integrally form a trapezoidal structure; the connecting piece and the secondary beam serve as the upper bottom and the lower bottom of the trapezoid structure respectively, the two inclined supporting pieces serve as the two waists of the trapezoid structure respectively, and the head and tail connecting positions of the trapezoid structure are fixedly connected through bolt fasteners.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support technology, and in particular to a corrosion-resistant connection and fastening component suitable for photovoltaic support systems. Background Technology

[0002] As a crucial component of photovoltaic (PV) power generation systems, the performance of PV support systems directly impacts the operational efficiency and power generation of PV modules. Existing PV support fasteners often face corrosion issues during long-term outdoor use, especially in humid, high-salt, and extreme temperature environments. Corrosion not only reduces connection strength but can even lead to structural failure of the support system, thus affecting PV power generation efficiency. While traditional hot-dip galvanized bolt structures offer corrosion resistance, the need to allow for gaps between bolt threads for the required coating, coupled with a looser thread fit in the nut and bolt, results in low zinc layer strength. This filling of the gaps between the threads degrades the bolt's load-bearing capacity and anti-loosening performance.

[0003] In addition, existing photovoltaic support systems often have relatively fixed structures and can only be used with photovoltaic panels of specific sizes. They do not have the function of adjusting themselves to adapt to photovoltaic panels of different sizes, thus limiting the scope of application of photovoltaic support systems. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a corrosion-resistant connection and fastening assembly suitable for photovoltaic support systems. The photovoltaic support system includes a main beam and several secondary beam assemblies. Each secondary beam assembly includes a secondary beam and two diagonal braces. Each secondary beam assembly is equipped with a set of connection and fastening assemblies.

[0005] The entire connection and fastening assembly is made of weathering steel. Each set of connection and fastening assemblies includes a connecting piece and multiple bolt fasteners, and the bolt fasteners include bolts and nuts.

[0006] For any given secondary beam assembly, the secondary beam, the two diagonal braces, and the connecting piece together form a trapezoidal structure.

[0007] The connecting piece and the secondary beam serve as the upper and lower bases of the trapezoidal structure, respectively, and the two diagonal braces serve as the two waists of the trapezoidal structure. The beginning and end of the trapezoidal structure are fixedly connected by bolts.

[0008] In some embodiments, the plurality of bolt fasteners includes two stud fasteners;

[0009] The bolts of the double-ended stud fastener are double-ended studs and are equipped with two nuts;

[0010] The main beam has a rectangular cross-section, and two double-ended stud fasteners are located on the left and right sides of the main beam, respectively.

[0011] The connecting piece includes a first plane and a second plane that are perpendicular to each other, making its cross-section L-shaped;

[0012] The two ends of the first plane of the connecting piece are respectively fixedly connected to two diagonal braces;

[0013] The second plane of the connecting piece contacts the lower surface of the main beam;

[0014] The secondary beam has an I-shaped cross-section, and its lower surface is in contact with the upper surface of the main beam.

[0015] For any double-ended stud fastener, both ends of the double-ended stud pass through the pre-set through holes on the first plane of the connecting piece and the lower surface of the secondary beam, respectively, and the size of the through holes prevents the nuts from passing through. Both ends of the double-ended stud are threadedly connected to two nuts.

[0016] In some embodiments, the bolt fastener further includes a washer for engaging with the nut.

[0017] In some embodiments, the weathering steel material used in the connecting fastening assembly is high weathering steel or weldable weathering steel.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The corrosion-resistant connection and fastening assembly for photovoltaic support systems provided by this utility model is made entirely of weather-resistant steel, which has strong corrosion resistance and can work stably for a long time in harsh environments, extending its service life and improving the reliability of the photovoltaic support system. Moreover, the connection and fastening assembly adopts a special structure, which not only makes the installation process convenient and simple, but also allows for detachable and fixed connection between the secondary beam assembly and the main beam of the photovoltaic support system. While ensuring structural stability, the position of the secondary beam assembly can be easily adjusted, thereby adapting to photovoltaic modules of different sizes and greatly improving the applicability of the photovoltaic support system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a photovoltaic support system;

[0021] Figure 2 A schematic diagram of the corrosion-resistant connection and fastening assembly for photovoltaic support systems provided by this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Connecting piece; 2. Double-ended stud; 3. Nut; 4. Washer; 10. Main beam; 20. Secondary beam; 30. Diagonal brace; 40. Column. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with the accompanying drawings and specific embodiments, further explains how this utility model is implemented.

[0024] Reference Figure 1 and Figure 2 As shown, Figure 2 for Figure 1 The enlarged view at point A shows that this utility model provides a corrosion-resistant connection and fastening assembly suitable for photovoltaic support systems. The photovoltaic support system includes a main beam 10 and several secondary beam assemblies. Each secondary beam assembly includes a secondary beam 20 and two diagonal braces 30. Each secondary beam assembly is equipped with a set of connection and fastening assemblies. The connection and fastening assemblies are made of weather-resistant steel. Each set of connection and fastening assemblies includes a connecting piece 1 and multiple bolt fasteners, including bolts and nuts 3. For any secondary beam assembly, the secondary beam 20, the two diagonal braces 30, and the connecting piece 1 form a trapezoidal structure. The connecting piece 1 and the secondary beam 20 serve as the upper and lower bases of the trapezoidal structure, respectively, and the two diagonal braces 30 serve as the two sides of the trapezoidal structure. The beginning and end of the trapezoidal structure are fixedly connected by bolt fasteners.

[0025] Understandably, during use, the main beam 10 and several secondary beam components are installed together on the column 40, and the upper part of the secondary beam 20 is used to directly support the photovoltaic panels.

[0026] Preferably, the plurality of bolt fasteners includes two stud fasteners; the stud fasteners use studs 2 and are equipped with two nuts 3; the main beam 10 has a rectangular cross-section, and the two stud fasteners are located on the left and right sides of the main beam 10 respectively; the connecting piece 1 includes a first plane and a second plane that are perpendicular to each other, making its cross-section L-shaped; the two ends of the first plane of the connecting piece 1 are fixedly connected to two diagonal braces 30 respectively; the second plane of the connecting piece 1 is in contact with the lower surface of the main beam 10; the secondary beam 20 has an I-shaped cross-section, and the lower surface of the secondary beam 20 is in contact with the upper surface of the main beam 10; for any one stud fastener, the two ends of the stud 2 pass through the pre-set through holes on the first plane of the connecting piece 1 and the lower surface of the secondary beam 20 respectively, and the size of the through holes prevents the nuts 3 from passing through, and the two ends of the stud 2 are threadedly connected to the two nuts 3 respectively.

[0027] Preferably, the bolt fastener also includes a washer 4 for mating with the nut 3.

[0028] In addition, the weathering steel material used for the connecting fastening components is either high weathering steel or weldable weathering steel. Specifically, the grades of high weathering steel can be Q295GNH, Q355GNH, Q265GNH, or Q310GNH, etc.; the grades of weldable weathering steel can be Q235NH, Q295NH, Q355NH, Q415NH, Q460NH, Q500NH, or Q550NH, etc.

[0029] Compared to bolts made of traditional hot-dip galvanized materials, bolts made of weathering steel do not require a pre-existing gap between the bolt threads for the coating, and the nuts and bolts have a tighter fit, resulting in superior bolt strength and anti-loosening performance.

[0030] In summary, the corrosion-resistant connection and fastening assembly for photovoltaic support systems provided by this utility model is made entirely of weathering steel, which has strong corrosion resistance and can work stably for a long time in harsh environments, extending its service life and improving the reliability of the photovoltaic support system. Moreover, the connection and fastening assembly with a special structure not only makes the installation process convenient and simple, but also allows for detachable and fixed connection between the secondary beam assembly and the main beam of the photovoltaic support system. While ensuring structural stability, the position of the secondary beam assembly can be easily adjusted, thereby adapting to photovoltaic modules of different sizes and greatly improving the applicability of the photovoltaic support system.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A corrosion-resistant connection and fastening assembly suitable for photovoltaic support systems, characterized in that, The photovoltaic support system includes a main beam (10) and several secondary beam components. Each secondary beam component includes a secondary beam (20) and two diagonal braces (30). Each secondary beam component is equipped with a set of connecting and fastening components. The connecting fastening assembly is made of weathering steel. Each connecting fastening assembly includes a connecting piece (1) and multiple bolt fasteners, and the bolt fasteners include bolts and nuts (3). For any given secondary beam assembly, the secondary beam (20), the two diagonal braces (30), and the connecting piece (1) together form a trapezoidal structure; The connecting piece (1) and the secondary beam (20) serve as the upper and lower bases of the trapezoidal structure, respectively, and the two diagonal braces (30) serve as the two waists of the trapezoidal structure. The beginning and end of the trapezoidal structure are fixedly connected by bolts.

2. The corrosion-resistant connection and fastening assembly for photovoltaic support systems according to claim 1, characterized in that, The multiple bolt fasteners include two stud fasteners; The bolts of the double-ended stud fastener are double-ended studs (2) and are equipped with two nuts (3); The main beam (10) has a rectangular cross-section, and two double-headed stud fasteners are located on the left and right sides of the main beam (10), respectively. The connecting piece (1) includes a first plane and a second plane that are perpendicular to each other, so that its cross-section is L-shaped; The two ends of the first plane of the connecting piece (1) are respectively fixedly connected to two diagonal braces (30); The second plane of the connecting piece (1) contacts the lower surface of the main beam (10); The secondary beam (20) has an I-shaped cross-section, and the lower surface of the secondary beam (20) is in contact with the upper surface of the main beam (10). For any double-ended stud fastener, the two ends of the double-ended stud (2) pass through the pre-set through holes on the first plane of the connecting piece (1) and the lower surface of the secondary beam (20), and the size of the through holes makes it impossible for the nuts (3) to pass through. The two ends of the double-ended stud (2) are threadedly connected to two nuts (3).

3. The corrosion-resistant connection and fastening assembly for photovoltaic support systems according to claim 1, characterized in that, The bolt fastener also includes a washer (4) for mating with the nut (3).

4. The corrosion-resistant connection and fastening assembly for photovoltaic support systems according to claim 1, characterized in that, The weathering steel material used in the connecting fastening components is high weathering steel or weldable weathering steel.

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