A purlin structure for a photovoltaic racking

Abstract

The utility model relates to a kind of purlin structures for photovoltaic support, belong to photovoltaic support connection technical field, the purlin structure for photovoltaic support, including photovoltaic support, the top of the photovoltaic support is symmetrically equipped with purlin, the inside of the purlin is fixedly installed with the connecting assembly matched with photovoltaic support, the C-shaped reinforcing plate of the utility model is fixedly connected with the inside of purlin by thread, while its bottom two sides C-shaped clamping block is engaged in the outside of purlin, form the double constraint of "inside bolt fixation+outside engagement limit", the relative displacement of purlin and C-shaped reinforcing plate is greatly limited, and side edge reinforcing rod is fixed with photovoltaic support side by external bolt, realize the three-dimensional connection of purlin and photovoltaic support "top support+side reinforcement", this multilevel, multidimensional connection design, the overall anti-loosening ability of structure is effectively improved, even in long-term vibration or extreme load environment, still can maintain stable connection.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic support connection technology, specifically relating to a purlin structure for photovoltaic supports. Background Technology

[0002] With the global energy structure shifting towards clean energy, the photovoltaic industry, as a core sector of renewable energy, has achieved rapid development in recent years. The construction scenarios for photovoltaic power plants have also gradually expanded from traditional flat wastelands to complex scenarios such as mountains, coastlines, and rooftops. This has placed higher demands on the stability, load-bearing capacity, and adaptability of photovoltaic support systems. Among them, the purlin structure, as a key connection carrier between photovoltaic support systems and photovoltaic modules, directly determines the installation efficiency, operational safety, and service life of photovoltaic power plants, becoming one of the core links restricting the improvement of the quality and efficiency of photovoltaic power plants. Therefore, it is necessary to design a purlin structure for photovoltaic support systems.

[0003] In existing technologies, the connection between purlins and photovoltaic brackets mostly relies on a single bolt or a simple snap-fit ​​structure. Bolts are prone to loosening due to long-term vibration and temperature changes, while snap-fit ​​structures are prone to relative displacement under load due to the lack of secondary reinforcement design, which leads to a decrease in the installation accuracy of photovoltaic modules and may even cause safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a purlin structure for photovoltaic brackets that is simple in structure and reasonably designed in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A purlin structure for a photovoltaic support includes a photovoltaic support, wherein purlins are symmetrically installed on the top of the photovoltaic support, and connecting components that cooperate with the photovoltaic support are fixedly installed on the inner side of the purlins.

[0007] As a further optimization of this utility model, the connecting component includes a C-shaped reinforcing plate that is threadedly fixed inside the purlin, and multiple triangular reinforcing blocks are welded and fixed to the top and bottom of the C-shaped reinforcing plate.

[0008] As a further optimization of this utility model, a mounting plate placed on top of the photovoltaic bracket is welded and fixed to the bottom of one end of the C-shaped reinforcing plate, and triangular reinforcing plates connected to the inner side of the C-shaped reinforcing plate are welded and fixed to both sides of the top of the mounting plate.

[0009] As a further optimization of this utility model, C-shaped clips that engage with the outside of the purlin are welded and fixed on both sides of the bottom of the C-shaped reinforcing plate, and side reinforcing rods placed on both sides of the photovoltaic bracket are welded and fixed to the bottom of the two C-shaped clips.

[0010] As a further optimization of this utility model, both the C-shaped reinforcing plate and the mounting plate are provided with multiple internal threaded holes, and each of the multiple internal threaded holes is threaded with a fixing bolt that cooperates with the purlin and the photovoltaic bracket.

[0011] As a further optimization of this utility model, a reinforcing block is welded and fixed on the side of each of the two side reinforcing rods that are close to each other. The interior of each of the two reinforcing blocks is provided with an internal threaded hole, and the internal thread of the internal threaded hole is penetrated by an external bolt that cooperates with the photovoltaic bracket.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model employs a multi-level reinforcement design for the connecting components. On one hand, the C-shaped reinforcement plate is tightly connected to the inner side of the purlin via threaded fixing, while the C-shaped locking blocks on both sides of its bottom engage with the outer side of the purlin, forming a dual constraint of "inner bolt fixing + outer locking and limiting," which significantly restricts the relative displacement between the purlin and the C-shaped reinforcement plate. On the other hand, the mounting plate covers the top of the photovoltaic bracket and is threadedly connected to the photovoltaic bracket via fixing bolts, while the side reinforcement rods are fixed to the side of the photovoltaic bracket via external bolts, achieving a three-dimensional connection of "top support + side reinforcement" between the purlin and the photovoltaic bracket. This multi-level, multi-dimensional connection design, compared to the single connection method of existing technologies, effectively improves the overall anti-loosening ability of the structure, ensuring a stable connection even under long-term vibration or extreme load environments.

[0014] 2. This utility model utilizes the principle of triangle stability by welding multiple triangular reinforcing blocks to the top and bottom of the C-shaped reinforcing plate, effectively improving the bending strength of the C-shaped reinforcing plate and preventing deformation when bearing the weight of photovoltaic modules. Secondly, the triangular reinforcing plates on both sides of the top of the mounting plate form a triangular force system of "C-shaped reinforcing plate - triangular reinforcing plate - mounting plate", which effectively disperses the load transmitted from the purlins to the photovoltaic bracket, thereby improving the local load-bearing capacity. Through the structural design of the side reinforcing rods, the overall structure has a stronger resistance to lateral pressure and can effectively resist the impact of lateral loads such as wind on the structure, thus effectively improving the overall resistance to lateral displacement. Attached Figure Description

[0015] Figure 1 This is a front and side view of the overall structure of this utility model;

[0016] Figure 2 This is a rear side view of the overall structure of this utility model;

[0017] Figure 3 This is a front side view of the three-dimensional structure of the connecting component of this utility model;

[0018] Figure 4 This is a rear side view of the three-dimensional structure of the connecting component of this utility model;

[0019] Figure 5 This is a bottom side view of the three-dimensional structure of the connecting component of this utility model.

[0020] In the diagram: 1. Photovoltaic bracket; 2. Purlin; 3. Connecting component; 300. Mounting plate; 301. Triangular reinforcing plate; 302. C-shaped reinforcing plate; 303. Triangular reinforcing block; 304. C-shaped clamp; 305. Side reinforcing rod. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1: As Figure 1 , Figure 2 As shown, a purlin structure for photovoltaic (PV) mounting systems includes three core components: a PV mounting system 1, purlins 2, and connecting components 3. The PV mounting system 1, as the basic support component of the entire structure, is made of high-strength aluminum alloy with an "I"-shaped cross-section. Its length can be customized according to the actual installation requirements of the PV power station. The purlins 2 are also made of aluminum alloy with a C-shaped cross-section. Their length matches the span of the PV mounting system 1 and is mainly used to bear the weight of the PV modules and transfer the load to the PV mounting system 1. The connecting components 3 are the key components for achieving a stable connection between the purlins 2 and the PV mounting system 1. Through a specific structural design, it ensures that there will be no relative displacement between the two, while enhancing the overall structure's resistance to wind and snow loads.

[0023] like Figure 1 , Figure 2 As shown, during the assembly process, the purlins 2 are first symmetrically installed on the top of the photovoltaic bracket 1. Specifically, according to the arrangement of the photovoltaic modules and the installation spacing requirements, the installation positions of the purlins 2 are pre-marked on the top of the photovoltaic bracket 1 to ensure that the distance between the two purlins 2 is uniform and meets the design standards. Then, the purlins 2 are placed in the marked positions so that their inner sides are tightly fitted with the top surface of the photovoltaic bracket 1, laying the foundation for the subsequent installation of the connecting components 3.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the connecting component 3 is the core component ensuring the stability of the connection between the purlin 2 and the photovoltaic bracket 1. It specifically includes a mounting plate 300, a triangular reinforcing plate 301, a C-shaped reinforcing plate 302, a triangular reinforcing block 303, a C-shaped locking block 304, and a side reinforcing rod 305. The C-shaped reinforcing plate 302 is made of steel plate with a C-shaped cross-section, the opening facing the outside of the purlin 2. During the processing of the C-shaped reinforcing plate 302, it is first installed on the inside of the purlin 2 by threaded fixing. Specifically, threaded holes matching the mounting holes of the C-shaped reinforcing plate 302 are pre-drilled on the inside of the purlin 2. Then, bolts are used to tightly fix the C-shaped reinforcing plate 302 to the purlin 2, ensuring... There is no looseness between the two. At the same time, multiple triangular reinforcing blocks 303 are installed at the top and bottom of the C-shaped reinforcing plate 302 by welding. The triangular reinforcing blocks 303 adopt an isosceles right triangle structure and are made of the same material as the C-shaped reinforcing plate 302. The multiple triangular reinforcing blocks 303 are evenly distributed along the length of the C-shaped reinforcing plate 302. After being fixed by welding, the bending resistance of the C-shaped reinforcing plate 302 can be significantly enhanced, preventing it from deforming when bearing load. At the same time, the embedded design of the C-shaped reinforcing plate 302 can improve the firmness of the connection between the two purlins 2, and increase the stability and load-bearing capacity of the connection between the purlins 2.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a mounting plate 300 is installed at the bottom of one end of the C-shaped reinforcing plate 302 by welding. The mounting plate 300 is made of rectangular steel plate, and its width is adapted to the top width of the photovoltaic bracket 1, ensuring that the mounting plate 300 can completely cover the top surface of the photovoltaic bracket 1, thereby achieving more stable support. In addition, triangular reinforcing plates 301 are installed on both sides of the top of the mounting plate 300 by welding. One side of the triangular reinforcing plate 301 is welded to the top of the mounting plate 300, and the other side is welded to the inner side of the C-shaped reinforcing plate 302, forming a triangular support structure. This structural design utilizes the stability principle of triangles, which can effectively disperse the load transmitted from the C-shaped reinforcing plate 302 to the mounting plate 300, further improving the overall load-bearing capacity of the connecting component 3.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, C-shaped clips 304 are installed on both sides of the bottom of the C-shaped reinforcing plate 302 by welding. The opening of the C-shaped clips 304 faces the inside of the purlin 2, and its size matches the outer contour of the purlin 2. It can be tightly locked onto the outside of the purlin 2. The locking connection between the C-shaped clips 304 and the purlin 2 can further limit the relative displacement between the purlin 2 and the C-shaped reinforcing plate 302, and enhance the connection stability between the two. At the same time, side reinforcing rods 305 are installed on the bottom of the two C-shaped clips 304 by welding. The lower end of the side reinforcing rods 305 extends to both sides of the photovoltaic bracket 1 and fits tightly against the side of the photovoltaic bracket 1. The side reinforcing rods 305 can support the photovoltaic bracket 1 and the purlin 2 from the side, effectively resisting the influence of lateral loads such as wind on the structure and improving the overall structure's resistance to lateral displacement.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, to ensure a more secure and reliable connection between the components, this structure is further reinforced by bolt fixing. Multiple internal threaded holes are provided inside both the C-shaped reinforcing plate 302 and the mounting plate 300. The diameter of each internal threaded hole is determined according to the specifications of the selected bolts. These internal threaded holes are evenly distributed along the length of the C-shaped reinforcing plate 302 and the mounting plate 300. During assembly, fixing bolts matching the internal threaded holes are threaded through the holes and connected to the purlin 2 and the photovoltaic bracket 1 respectively. This tightly fixes the C-shaped reinforcing plate 302 to the purlin 2 and the mounting plate 300 to the photovoltaic bracket 1, preventing loosening.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, on the side where the two side reinforcement rods 305 are close to each other, reinforcement blocks are installed by welding. The reinforcement blocks are made of rectangular steel plates and have two internal threaded holes. The specifications of the two internal threaded holes are the same as those of the first internal threaded hole. When installing the side reinforcement rods 305, the external bolts that match the second internal threaded hole are threaded through the second internal threaded hole and threadedly connected to the photovoltaic bracket 1, so that the side reinforcement rods 305 are tightly fixed to the photovoltaic bracket 1, further enhancing the lateral support of the side reinforcement rods 305 for the photovoltaic bracket 1.

[0029] It should be noted that, in use, this purlin structure for photovoltaic brackets involves symmetrically placing purlins 2 on top of the photovoltaic bracket 1. After adjusting the position, the pre-assembled connecting assembly 3 is installed on the inner side of the purlin 2, so that the C-shaped locking block 304 engages with the outer side of the purlin 2. The mounting plate 300 is placed on top of the photovoltaic bracket 1, the side reinforcing rods 305 are attached to both sides of the photovoltaic bracket 1, and the C-shaped reinforcing plate 302 is placed on the inner side of the purlin 2 (e.g., ...). Figure 1 As shown in the figure, after placement, the fixing bolts are threaded through the internal threaded holes on the C-shaped reinforcing plate 302 and the mounting plate 300, respectively, and threadedly connected to the purlin 2 and the photovoltaic bracket 1 and tightened. The external bolts are threaded through the internal threaded holes on the reinforcing block, and threadedly connected to the photovoltaic bracket 1 and tightened, thus completing the assembly of the entire structure.

[0030] Through the above assembly process, a stable connection between the components can be achieved, giving the entire purlin structure used for photovoltaic brackets excellent load-bearing capacity and stability, which can meet the requirements for long-term safe operation of photovoltaic power plants.

[0031] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A purlin structure for a photovoltaic support, comprising a photovoltaic support (1), characterized in that, The top of the photovoltaic bracket (1) is symmetrically equipped with purlins (2), and the inner side of the purlins (2) is fixedly equipped with connecting components (3) that cooperate with the photovoltaic bracket (1). The connecting assembly (3) includes a C-shaped reinforcing plate (302) that is threadedly fixed inside the purlin (2), and multiple triangular reinforcing blocks (303) are welded and fixed to the top and bottom of the C-shaped reinforcing plate (302). The bottom of one end of the C-shaped reinforcing plate (302) is welded and fixed with an mounting plate (300) placed on top of the photovoltaic bracket (1). Both sides of the top of the mounting plate (300) are welded and fixed with triangular reinforcing plates (301) connected to the inner side of the C-shaped reinforcing plate (302). Both sides of the bottom of the C-shaped reinforcing plate (302) are welded and fixed with C-shaped clips (304) that are engaged with the outside of the purlin (2), and the bottom of the two C-shaped clips (304) are welded and fixed with side reinforcing rods (305) placed on both sides of the photovoltaic bracket (1).

2. The purlin structure for a photovoltaic support according to claim 1, characterized in that: The C-shaped reinforcing plate (302) and the mounting plate (300) are both provided with multiple internal threaded holes, and each of the multiple internal threaded holes is threaded with a fixing bolt that cooperates with the purlin (2) and the photovoltaic bracket (1).

3. A purlin structure for a photovoltaic support according to claim 2, characterized in that: The two side reinforcement rods (305) are welded and fixed with reinforcement blocks on the side that are close to each other. The two reinforcement blocks are provided with internal threaded holes II, and the internal threads of the internal threaded holes II are connected by external bolts that cooperate with the photovoltaic bracket (1).

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