Photovoltaic support and roof interface structure

Abstract

The utility model relates to photovoltaic module technical field provides a photovoltaic support and roof adapter structure, including the embedded bar, the embedded bar one end sets the lug, and the lug is embedded into the concrete block with the embedded bar, and the embedded bar other end installs the welding hole of end plate, and the welding hole axial setting conical welding, and the embedded bar side wall sets up conical welding block with the connecting plate top surface, and the end plate end installs the connecting plate perpendicularly, and a plurality of long holes are set up on the connecting plate, and the photovoltaic plate framework is installed in the long hole through the bolt, increases photovoltaic system stability.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, specifically to a photovoltaic support structure for connecting to a roof. Background Technology

[0002] Building-integrated photovoltaics (BIPV) is a technology that integrates solar photovoltaics into buildings, such as photovoltaic roof tiles, photovoltaic curtain walls, and photovoltaic skylights. BIPV technology meets the aesthetic and safety requirements of buildings while simultaneously addressing the energy-saving, emission-reduction, and environmentally friendly needs of urban building materials, and has become one of the important development trends in photovoltaic buildings.

[0003] Building-integrated photovoltaics (BIPV) uses traditional counterweight and steel bracket installation techniques for rooftop and ground-mounted photovoltaic structures. The counterweight is made of cast concrete blocks, which serve as the main load-bearing component. Steel brackets are installed on the concrete counterweight blocks to fix the photovoltaic panels. The specific installation structure can be described in the lightweight shell-type external insulation photovoltaic-thermal integrated wall structure with announcement number CN113898081A, where photovoltaic modules are directly fixed to the enclosure structure using straight anchor nails.

[0004] While existing methods of directly installing solar photovoltaic modules to walls via anchors and insulation layers can achieve building-integrated photovoltaics, they still present the following technical challenges when dealing with typhoon conditions: (1) Although the conical anchors used can be inserted into the wall and can be used normally on ordinary roofs, when dealing with typhoon weather or when applied to the roof of a building with a height of more than 100 meters, the top of the photovoltaic panel is subjected to wind pressure, and the photovoltaic panel receives a force away from the wall. The photovoltaic panel will be pulled out along with the anchors. The existing structure of direct anchoring with conical anchors results in poor wind pressure resistance of the photovoltaic system.

[0005] (2) When photovoltaic panels are installed, they are generally installed on the ground at an angle by fasteners. The photovoltaic panels and the frame themselves have a certain weight. After a long period of installation, the photovoltaic panels will settle along the tilt direction under the influence of gravity, causing the connection to crack. Utility Model Content

[0006] To achieve the above objectives, this utility model proposes a photovoltaic support and roof transition structure, including a reinforcing bar. One end of the reinforcing bar has a protrusion embedded in a concrete block. The protrusion and the reinforcing bar are embedded in a concrete block. The other end of the reinforcing bar is installed in a weld hole of an end plate. The weld hole has an axially arranged tapered weld bead. Tapered weld blocks are provided on the sidewall of the reinforcing bar and the top surface of the connecting plate. A connecting plate is vertically installed at the end of the end plate, and several elongated holes are provided on the connecting plate. The photovoltaic panel frame is installed in the elongated holes by bolts. This claim defines the core components of the entire transition structure. By embedding the protrusion at one end of the reinforcing bar into the concrete block, the mechanical interlocking force between the reinforcing bar and the concrete block is increased, significantly improving the anchoring strength and making the photovoltaic system less likely to be pulled out in strong winds such as typhoons.

[0007] Further configured, the connecting plate includes an integrally formed short plate and a long plate, the short plate is vertically fixed to the long plate, the short plate is fixedly connected to the end plate, and an elongated hole is formed on the long plate. The connecting plate adopts an integral design of the short plate and the long plate, the short plate is fixedly connected to the end plate, and the long plate carries the elongated hole. This structure optimizes the force transmission path.

[0008] A further configuration is provided, wherein a first semicircular hole and a second semicircular hole are provided at both ends of the elongated hole, and the center of the first semicircular hole is at a greater height than the center of the second semicircular hole. The bolt is fixedly installed in the first semicircular hole. The semicircular holes are provided at both ends of the elongated hole, and the first semicircular hole is at a higher position and the second semicircular hole is at a lower position. This design allows the bolt to be initially fixed in the higher first semicircular hole. When the photovoltaic panel settles, the bolt can slide along the elongated hole to the lower second semicircular hole, thereby automatically compensating for the settlement displacement.

[0009] A further configuration is that the protrusion is fixedly disposed on the side wall of the rebar, and the protrusion is disposed along the length direction of the rebar, which increases the contact area between the rebar and the concrete block and the mechanical interlocking effect.

[0010] Further configured, an annular welding block is formed in the weld hole, and the conical welding block is connected as one unit by the annular welding block and the conical welding block II formed in the conical weld bead. The annular welding block and the conical welding block II form a continuous welding reinforcement layer, which upgrades the connection between the rebar and the end plate from spot welding to surface welding, greatly improving the welding strength and fatigue resistance.

[0011] Further configured, the width of the protrusion is equal to the width of the rebar, and the width of the protrusion is consistent with the width of the rebar, which avoids local stress concentration in the concrete block caused by the protrusion being too wide or insufficient anchoring force caused by the protrusion being too narrow.

[0012] A further configuration is made such that the area of ​​the short plate is smaller than the area of ​​the end plate, making it easier for the short plate to align with the end plate during welding and reducing the risk of welding deformation.

[0013] Furthermore, the connecting plate is made of steel, which gives the structure high strength, high toughness and good corrosion resistance.

[0014] Further, the end plate and the connecting plate are welded together. This welding method achieves a rigid connection between the end plate and the connecting plate, avoiding the loosening problem that may occur with bolt connections.

[0015] A further configuration involves embedding several rebars into concrete blocks with spacing between them. The multiple rebars are embedded into the concrete blocks at intervals, forming a distributed anchoring system that shares the load and avoids the risk of single-point failure.

[0016] The beneficial effects of one or more of the above technical solutions: (1) Rebar is installed in the concrete block. A protrusion is set at one end of the rebar and the protrusion is embedded in the concrete block. The other end of the rebar is installed in the weld hole of the connecting plate. A tapered weld bead is set in the axial direction of the weld hole. A tapered weld block is set on the side wall of the rebar and the top surface of the connecting plate. The connecting plate is installed vertically at the end of the connecting plate. Several long holes are set on the connecting plate. The photovoltaic panel frame is installed in the long holes by bolts. The rebar can be better combined with the concrete block through the protrusion. The tapered weld bead and tapered weld block further improve the connection strength. The strength of the photovoltaic system is improved by protrusion, tapered weld bead, tapered weld block and rebar anchoring + connecting plate.

[0017] (2) The L-shaped connecting plate is processed with horizontal elongated holes. During installation, the frame is installed at one end of the elongated hole with bolts. Then, the photovoltaic panel is installed on the outside of the frame. When the photovoltaic panel settles, the photovoltaic panel moves along the length of the elongated hole. The elongated hole provides reserved space for settlement, which satisfies the horizontal displacement caused by the main body settlement of the building itself, and prevents the downward force of the photovoltaic panel from acting directly on the frame during settlement, thereby reducing the possibility of tearing at the connection. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the installation structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the installation structure of the rebar and end plate of this utility model.

[0021] Figure 3 This is a schematic diagram of the connecting plate of this utility model.

[0022] Figure 4 for Figure 3 Side view.

[0023] In the diagram, 1 is a concrete block; 2 is a rebar; 3 is a protrusion; 4 is an end plate; 5 is a connecting plate; 6 is a conical weld block; 7 is a photovoltaic panel frame; 8 is a bolt; 9 is a short plate; 10 is a long plate; 11 is an annular weld block; 12 is a conical weld block II; 13 is a long hole; 131 is the first semicircular hole; and 132 is the second semicircular hole. Detailed Implementation

[0024] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0025] Example 1 A photovoltaic support structure for connecting to a roof, as shown in the following example. Figure 1 , Figure 2 , Figure 3 and Figure 4 The photovoltaic system includes a reinforcing bar 2, with a protrusion 3 at one end. The protrusion 3 and the reinforcing bar 2 are embedded in concrete 1. The other end of the reinforcing bar 2 is installed in the weld hole of the end plate 4. The weld hole has a tapered weld bead in the axial direction. Tapered weld blocks 6 are set on the side wall of the reinforcing bar 2 and the top surface of the connecting plate 5. The end plate 4 is vertically installed with the connecting plate 5. Several elongated holes 13 are set on the connecting plate 5. The photovoltaic panel frame 7 is installed in the elongated holes 13 by bolts 8. The protrusion 3 at one end of the reinforcing bar 2 is embedded in the concrete 1, which increases the mechanical interlocking force between the reinforcing bar 2 and the concrete 1, significantly improving the anchoring strength and making the photovoltaic system less likely to be pulled out in strong winds such as typhoons. The tapered weld bead and tapered weld blocks 6 in the weld hole form multiple welding reinforcements, ensuring the reliability of the connection between the reinforcing bar 2 and the end plate 4 and avoiding stress concentration. The elongated holes on the connecting plate 5 allow the photovoltaic panel frame 7 to move along the length of the hole during settlement, effectively absorbing displacement caused by gravity or building settlement and preventing cracking at the connection. The overall structure works in synergy, which not only improves wind pressure resistance but also adapts to long-term settlement requirements, achieving high safety and durability.

[0026] The connecting plate 5 includes an integrally formed short plate 9 and a long plate 10. The short plate 9 is vertically fixed to the long plate 10 and is fixedly connected to the end plate 4. An elongated hole is formed on the long plate 10. The connecting plate 5 adopts an integral design of the short plate 9 and the long plate 10. The short plate 9 is fixedly connected to the end plate 4, and the long plate 10 carries the elongated hole. This structure optimizes the force transmission path. The short plate 9, as a transition component, disperses the load transmitted from the end plate 4, reducing local stress; the long plate 10 provides sufficient length to accommodate the elongated hole, ensuring that the photovoltaic panel frame 7 has ample displacement space. The integral design enhances overall rigidity, avoids assembly errors, improves installation efficiency and structural consistency, and reduces the risk of failure due to component loosening.

[0027] A first semicircular hole 131 and a second semicircular hole 132 are provided at both ends of the elongated hole. The center of the first semicircular hole 131 is positioned at a higher height than the center of the second semicircular hole 132. The bolt 8 is fixedly installed in the first semicircular hole. The semicircular holes at both ends of the elongated hole, with the first semicircular hole positioned higher and the second semicircular hole lower, allow the bolt 8 to be initially fixed in the higher first semicircular hole. When the photovoltaic panel settles, the bolt 8 can slide along the elongated hole to the lower second semicircular hole, thus automatically compensating for the settlement displacement. The semicircular hole structure reduces the frictional resistance of the bolt 8 during movement, avoids wear caused by sharp edges, and ensures a smooth settlement process. This further reduces the impact of settlement stress on the frame and connection points, extending service life.

[0028] The protrusion 3 is fixedly installed on the side wall of the rebar 2, and is positioned along the length of the rebar 2. This arrangement increases the contact area between the rebar 2 and the concrete 1, and enhances the mechanical interlocking effect. When subjected to wind pull-out force, the protrusion 3 acts as an anchor point, distributing the load into the concrete 1 and preventing the rebar 2 from being pulled out in a straight line. This directional protrusion 3 design improves the uniformity and reliability of the anchorage, especially under high-frequency vibration or typhoon conditions, effectively suppressing fretting fatigue and ensuring long-term stability.

[0029] An annular weld block 11 is formed within the weld hole, and a conical weld block 6 is connected as a whole through the annular weld block 11 and the conical weld block II 12 formed within the conical weld bead. The annular weld block 11 and the conical weld block II 12 form a continuous weld reinforcement layer, upgrading the connection between the rebar 2 and the end plate 4 from spot welding to surface welding, greatly improving the welding strength and fatigue resistance. The conical structure helps the stress to transition smoothly from the rebar 2 to the end plate 4, reducing the vulnerability of the weld heat-affected zone. This integrated welding design ensures that the connection point is not prone to cracking under extreme wind loads, improving the overall structure's seismic and wind pressure resistance.

[0030] The width of protrusion 3 is equal to the width of rebar 2. This consistency in width avoids localized stress concentration in concrete 1 caused by excessively wide protrusion 3, or insufficient anchorage force due to excessively narrow protrusion 3. This equal-width design ensures uniform stress distribution on rebar 2 within concrete 1, improving anchorage efficiency. It also simplifies the manufacturing process, ensures that protrusion 3 is not easily displaced during pouring, and enhances the accuracy and reliability of the embedded parts.

[0031] The area of ​​the short plate 9 is smaller than that of the end plate 4. This smaller area makes it easier to align the short plate 9 with the end plate 4 during welding, reducing the risk of welding deformation. Simultaneously, the smaller area of ​​the short plate 9 optimizes material usage, reducing weight without compromising strength. This design also avoids unnecessary stress concentration caused by the edge of the short plate 9 extending beyond the end plate 4, ensuring a smooth force transfer from the end plate 4 to the connecting plate 5.

[0032] The connecting plate 5 is made of steel. The use of steel in the connecting plate 5 provides the structure with high strength, high toughness, and good corrosion resistance, especially after galvanizing or coating. The rigidity of steel helps maintain the shape stability of the elongated holes, ensuring smooth movement of the photovoltaic panel frame 7 during settlement. Furthermore, steel is highly compatible with welding processes, facilitating on-site processing and adjustments, thus improving the adaptability and durability of the entire system.

[0033] End plate 4 and connecting plate 5 are welded together. This welding method achieves a rigid connection between end plate 4 and connecting plate 5, avoiding the loosening problems that can occur with bolted connections. Welding provides a continuous force transmission path, improving the overall structural integrity and making it more stable in wind-induced vibration environments. This fixing method also simplifies installation steps, reduces the number of components, and lowers maintenance costs.

[0034] Several rebars (2) are embedded in concrete (1) with spacing between them. This spacing between the rebars (2) forms a distributed anchoring system that shares the load, avoiding the risk of single-point failure. The spacing design ensures uniform stress on the concrete (1), reducing the possibility of localized crushing. This arrangement improves the overall load-bearing capacity and redundancy of the photovoltaic support system, making it particularly suitable for large-span or high-wind-pressure scenarios, enhancing the system's safety margin.

[0035] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A photovoltaic support structure for connecting to a roof, characterized in that, This includes rebar installation, with a protrusion at one end of the rebar, which is embedded in the concrete block along with the rebar. The other end of the rebar is installed in the weld hole of the end plate, with a tapered weld bead set axially in the weld hole. Tapered weld blocks are set on the side wall of the rebar and the top surface of the connecting plate. The end plate is vertically installed at the end of the end plate, with several elongated holes set on the connecting plate. The photovoltaic panel frame is installed in the elongated holes by bolts.

2. The photovoltaic support and roof connection structure according to claim 1, characterized in that, The connecting plate includes an integrally formed short plate and a long plate. The short plate is vertically fixed to the long plate and is fixedly connected to the end plate. An elongated hole is formed on the long plate.

3. The photovoltaic support and roof connection structure according to claim 1, characterized in that, The elongated hole has a first semicircular hole and a second semicircular hole at both ends. The center of the first semicircular hole is at a greater height than the center of the second semicircular hole. The bolt is fixedly installed in the first semicircular hole.

4. The photovoltaic support and roof connection structure according to claim 1, characterized in that, The protrusion is fixedly installed on the side wall of the rebar, and the protrusion is arranged along the length direction of the rebar.

5. The photovoltaic support and roof connection structure according to claim 1, characterized in that, An annular welding block is formed inside the weld hole, and the conical welding block is connected as one unit by the annular welding block and the conical welding block II formed inside the conical weld bead.

6. The photovoltaic support and roof connection structure according to claim 1, characterized in that, The width of the protrusion is equal to the width of the rebar.

7. The photovoltaic racking-to-roof interface structure of claim 2, wherein, The area of ​​the short plate is smaller than the area of ​​the end plate.

8. The photovoltaic support and roof connection structure according to claim 1, characterized in that, The connecting plate is made of steel.

9. The photovoltaic racking and roofing interface structure of claim 1, wherein, The end plate and the connecting plate are welded and fixed.

10. The photovoltaic support and roof connection structure according to claim 1, characterized in that, The rebar is embedded in several concrete blocks, with spacing between the rebars.

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