Lightweight photovoltaic support with waterproof function

Abstract

The application discloses a light photovoltaic support with waterproof function, which comprises a plurality of parallel arranged support frames, wherein each support frame comprises a first ground beam installed on a roof, a plurality of vertical columns installed on the first ground beam, and a plurality of inclined beams installed on the upper ends of the vertical columns; a plurality of second ground beams are connected between all the first ground beams in parallel; a plurality of horizontal beams for photovoltaic installation are connected on all the inclined beams in parallel; a fixing strip is vertically and fixedly connected on each second ground beam near the roof edge along the length direction of the second ground beam; and a plurality of expansion bolts are installed on the fixing strip. Through the multi-layer connection of the first ground beam, the second ground beam and the inclined beam, a grid-shaped support system is formed, and the wind resistance and the earthquake resistance of the overall structure are enhanced; the fixing strip is installed on the wall through the expansion bolts instead of being directly punched on the roof, so that the damage to the waterproof layer of the roof is reduced, and the waterproof performance of the roof is ensured.

Description

Technical Field

[0001] This application relates to the field of photovoltaic installation, and in particular to a lightweight photovoltaic bracket with built-in waterproof function. Background Technology

[0002] The existing support structure mainly consists of columns, diagonal beams, crossbeams, and supports, which are welded together to form a stable structural system. The support tilt angle is between 5° and 15°, allowing for a relatively large internal space. The support columns are fixed to the cast-in-place reinforced concrete roof using expansion bolts via column base plates, thus realizing the installation of the distributed roof photovoltaic support structure.

[0003] Regarding the aforementioned technologies, the inventors believe the following drawbacks exist: When the support column base is fixed to the reinforced concrete roof with expansion bolts, the drilling and installation of these bolts damages the original, intact waterproofing layer of the roof. Furthermore, the connection between the expansion bolts and the concrete is not completely sealed. Over time, exposure to wind and sun, and thermal expansion and contraction, the gaps at the contact points gradually widen, allowing rainwater to seep into the roof through the bolt holes, posing a risk of leakage. Therefore, improvements are needed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a lightweight photovoltaic bracket with built-in waterproof function, aiming to solve the aforementioned problems.

[0005] A lightweight photovoltaic (PV) bracket with built-in waterproof function includes several parallel support frames. Each support frame includes a first ground beam installed on the roof, several columns installed on the first ground beam, and several inclined beams installed on the top of all the columns. Several second ground beams are connected in parallel between all the first ground beams. Several horizontal beams for PV installation are connected in parallel to all the inclined beams. Each of the second ground beams near the edge of the roof has a fixing strip vertically fixed along its own length, and several expansion bolts are installed on the fixing strip.

[0006] By adopting the above technical solution, a grid-like support system is formed through the multi-layered connection of the first ground beam, the second ground beam, and the inclined beam, enhancing the overall structure's wind and earthquake resistance. The second ground beam connects laterally to the first ground beam, effectively distributing the load, reducing stress concentration on individual columns, and improving structural reliability. The fixing strips are installed on the wall using expansion bolts, rather than being directly drilled into the roof, reducing damage to the roof's waterproofing layer and ensuring the roof's waterproofing performance.

[0007] Optionally, limit strips are installed on the first ground beams at both ends of the second ground beam, and several expansion bolts are installed on the limit strips.

[0008] By adopting the above technical solution, the limiting strip is fixed to the edge of the roof with expansion bolts, forming a double fixing point to prevent the second ground beam from shifting laterally or longitudinally due to external forces. The limiting strip concentrates the installation points of the expansion bolts in a localized area, further reducing the scope of damage to the roof waterproofing layer and facilitating local sealing treatment.

[0009] Optionally, a first water collection strip is installed in the middle of the inclined beam, and a second water collection strip is installed on both sides of the inclined beam. Several third water collection strips are detachably connected to the crossbeam by a limiting clamp, and the two ends of the third water collection strips are respectively located above the first and second water collection strips.

[0010] By adopting the above technical solution, the first water collection strip is located in the middle of the inclined beam, which can collect rainwater on the surface of the inclined beam and guide it to the drainage system below, preventing rainwater from seeping in along the connection between the inclined beam and the column. The second water collection strip is distributed on both sides of the crossbeam and the inclined beam, forming a lateral flow path to prevent rainwater from accumulating under the photovoltaic panel. The third water collection strip connects the first and second water collection strips to form a three-dimensional flow network, ensuring that rainwater is discharged quickly and orderly, reducing the risk of leakage.

[0011] Optionally, the limiting clamp includes a first limiting plate, a second limiting plate, and a limiting frame. The limiting frame includes two limiting screws, and a limiting rod is connected between the two limiting screws. Both the first and second limiting plates have limiting holes for the limiting rod to pass through. Each limiting screw is threaded with a limiting nut for pressing the second limiting plate. The first limiting plate has a limiting groove for one side of the third water collecting bar to be inserted.

[0012] By adopting the above technical solution, the first limiting plate and the second limiting plate are placed on both sides of the crossbeam respectively. The third water collection strip is pressed by the first limiting plate, so that the limiting screw passes through the limiting hole and the limiting nut is tightened, so that the limiting nut abuts against the second limiting plate, thereby fixing the third water collection strip on the crossbeam.

[0013] Optionally, the support frame is made of FRP material.

[0014] By adopting the above technical solutions, FRP has a low density, which can significantly reduce the weight of the support structure and lower the load on the roof, making it particularly suitable for older buildings or lightweight roofs. FRP has excellent corrosion resistance, resisting environmental erosion such as ultraviolet rays and acid rain, extending the service life of the support structure. The FRP material itself is insulating, avoiding potential hazards caused by potential differences between the photovoltaic system and the metal support structure.

[0015] Optionally, diagonal bracing is provided between adjacent columns.

[0016] By adopting the above technical solution, the diagonal bracing forms a triangular support structure, which effectively disperses the horizontal load and prevents the column from bending or tilting due to lateral forces.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. A grid-like support system is formed through the multi-layered connection of the first ground beam, the second ground beam, and the inclined beams, enhancing the overall structure's wind and earthquake resistance. The second ground beam connects laterally to the first ground beam, effectively distributing the load, reducing stress concentration on individual columns, and improving structural reliability. Fixing strips are installed on the wall using expansion bolts, rather than being directly drilled into the roof, reducing damage to the roof's waterproofing layer and ensuring its waterproofing performance.

[0019] 2. The limiting strip is fixed to the edge of the roof with expansion bolts, forming a double fixing point to prevent the second ground beam from shifting laterally or longitudinally due to external forces. The limiting strip concentrates the installation points of the expansion bolts in a localized area, further reducing the scope of damage to the roof waterproofing layer and facilitating localized sealing treatment.

[0020] 3. The first water collection strip is located in the middle of the inclined beam, which can collect rainwater on the surface of the inclined beam and guide it to the drainage system below, preventing rainwater from seeping in along the connection between the inclined beam and the column. The second water collection strip is distributed on both sides of the horizontal beam and the inclined beam, forming a lateral flow path to prevent rainwater from accumulating under the photovoltaic panel. The third water collection strip connects the first and second water collection strips to form a three-dimensional flow network, ensuring that rainwater is discharged quickly and orderly, reducing the risk of leakage. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0022] Figure 2 yes Figure 1 An enlarged schematic diagram of region A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. First ground beam; 11. Limiting strip; 12. Fixing strip; 2. Column; 21. Diagonal brace; 3. Diagonal beam; 4. Second ground beam; 5. Horizontal beam; 6. First water collection strip; 7. Second water collection strip; 8. Third water collection strip; 9. Limiting clamp; 91. First limiting plate; 911. Limiting groove; 912. Limiting hole; 92. Second limiting plate; 93. Limiting screw; 94. Limiting rod. Detailed Implementation

[0025] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0027] This application discloses a lightweight photovoltaic bracket with built-in waterproof function. (Refer to...) Figure 1 The system comprises several parallel support frames, each consisting of a first ground beam 1 mounted on the roof, several columns 2 fixedly connected to the first ground beam 1, and several diagonal beams 3 fixedly connected to the upper ends of all columns 2. The support frames are made of FRP (fiberglass reinforced plastic). FRP has a low density, significantly reducing the weight of the support structure and lowering the load on the roof, making it particularly suitable for older buildings or lightweight roofs. FRP also exhibits excellent corrosion resistance, resisting environmental erosion such as ultraviolet radiation and acid rain, extending the service life of the support structure. Furthermore, the FRP material itself is insulating, preventing potential hazards caused by the potential difference between the photovoltaic system and the metal support structure.

[0028] Reference Figure 1 Several second ground beams 4 are fixedly connected side-by-side to all the first ground beams 1. Several horizontal beams 5 for photovoltaic installation are fixedly connected side-by-side to all the inclined beams 3. Each second ground beam 4 near the roof edge is vertically fixed with a fixing strip 12 along its length, and several expansion bolts are installed on the fixing strip 12. Through the multi-layer connection of the first ground beams 1, second ground beams 4, and inclined beams 3, a grid-like support system is formed, enhancing the overall structure's wind and earthquake resistance. The second ground beams 4 are horizontally connected to the first ground beams 1, effectively distributing the load, reducing the stress concentration on individual columns 2, and improving structural reliability. The fixing strips 12 are installed on the wall using expansion bolts, rather than directly drilling holes in the roof, reducing damage to the roof waterproofing layer and ensuring the roof's waterproofing performance.

[0029] Reference Figure 1Limiting strips 11 are fixedly connected to the first ground beams 1 at both ends of the second ground beam 4. Each limiting strip 11 has several expansion bolts. The limiting strips 11 are fixed to the edge of the roof by the expansion bolts, forming a double fixing point to prevent the second ground beam 4 from shifting laterally or longitudinally due to external forces. The limiting strips 11 concentrate the installation points of the expansion bolts in a localized area, further reducing the extent of damage to the roof waterproofing layer and facilitating localized sealing.

[0030] Reference Figure 1 and Figure 2 A first water-collecting strip 6 is fixedly installed in the middle of the inclined beam 3, and second water-collecting strips 7 are installed on both sides of the inclined beam 3. Several third water-collecting strips 8 are detachably connected to the crossbeam 5 through limiting clamps 9. The two ends of the third water-collecting strips 8 are located above the first water-collecting strips 6 and the second water-collecting strips 7, respectively. The first water-collecting strip 6 is located in the middle of the inclined beam 3 and can collect rainwater on the surface of the inclined beam 3 and guide it to the drainage system below, preventing rainwater from seeping in along the connection between the inclined beam 3 and the column 2. The second water-collecting strips 7 are distributed on both sides of the crossbeam 5 and the inclined beam 3, forming a lateral flow path to prevent rainwater from accumulating under the photovoltaic panel. The third water-collecting strips 8, by connecting the first water-collecting strips 6 and the second water-collecting strips 7, form a three-dimensional flow network to ensure that rainwater is discharged quickly and orderly, reducing the risk of leakage.

[0031] Reference Figure 1 and Figure 2 The limiting clamp 9 includes a first limiting plate 91, a second limiting plate 92, and a U-shaped limiting frame. The limiting frame includes two limiting screws 93, with a limiting rod 94 fixedly connected between the two limiting screws 93. Both the first limiting plate 91 and the second limiting plate 92 have limiting holes 912 for the limiting rod 94 to pass through. Each limiting screw 93 is threaded with a limiting nut for pressing the second limiting plate 92. The first limiting plate 91 has a limiting groove 911 for one side of the third water collecting strip 8 to be engaged. The first limiting plate 91 and the second limiting plate 92 are placed on opposite sides of the crossbeam 5. The first limiting plate 91 presses the third water collecting strip 8, causing the limiting screws 93 to pass through the limiting holes 912. Tightening the limiting nuts causes them to press against the second limiting plate 92, thereby fixing the third water collecting strip 8 onto the crossbeam 5.

[0032] Reference Figure 1 Diagonal braces 21 are fixedly connected between adjacent columns 2. The diagonal braces 21 form a triangular support structure, which effectively distributes the horizontal load and prevents the columns 2 from bending or tilting due to lateral forces.

[0033] The implementation principle of a lightweight photovoltaic support system with built-in waterproof function in this application embodiment is as follows: A grid-like support system is formed through the multi-layer connection of the first ground beam 1, the second ground beam 4, and the inclined beam 3, enhancing the overall structure's wind and earthquake resistance. The second ground beam 4 connects laterally to the first ground beam 1, effectively distributing the load, reducing the stress concentration on individual columns 2, and improving structural reliability. The fixing strip 12 is installed on the wall using expansion bolts, rather than directly drilling holes in the roof, reducing damage to the roof waterproofing layer and ensuring the roof's waterproof performance. The first water-collecting strip 6 is located in the middle of the inclined beam 3, collecting rainwater from the surface of the inclined beam 3 and guiding it to the drainage system below, preventing rainwater from seeping in along the connection between the inclined beam 3 and the column 2. The second water-collecting strip 7 is distributed on both sides of the horizontal beam 5 and the inclined beam 3, forming a lateral flow path to prevent rainwater from accumulating under the photovoltaic panels. The third water-collecting strip 8 connects the first water-collecting strip 6 and the second water-collecting strip 7, forming a three-dimensional flow network to ensure that rainwater is discharged quickly and orderly, reducing the risk of leakage.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lightweight photovoltaic support bracket with built-in waterproof function, characterized in that: The system includes several parallel support frames, each including a first ground beam (1) installed on the roof, several columns (2) installed on the first ground beam (1), and several inclined beams (3) installed on the upper ends of all columns (2). Several second ground beams (4) are connected in parallel between all the first ground beams (1). Several horizontal beams (5) for photovoltaic installation are connected in parallel on all the inclined beams (3). Each of the second ground beams (4) near the edge of the roof is vertically fixed with a fixing strip (12) along its own length direction. Several expansion bolts are installed on the fixing strip (12).

2. The lightweight photovoltaic support with built-in waterproof function according to claim 1, characterized in that: Limiting strips (11) are installed on the first ground beams (1) at both ends of the second ground beam (4), and several expansion bolts are installed on the limiting strips (11).

3. The lightweight photovoltaic support with built-in waterproof function according to claim 1, characterized in that: The first water collection strip (6) is installed in the middle of the inclined beam (3), and the second water collection strip (7) is installed on both sides of the inclined beam (3). Several third water collection strips (8) are detachably connected to the crossbeam (5) by a limiting clamp (9). The two ends of the third water collection strips (8) are located above the first water collection strip (6) and the second water collection strip (7), respectively.

4. A lightweight photovoltaic support with built-in waterproof function according to claim 3, characterized in that: The limiting clamp (9) includes a first limiting plate (91), a second limiting plate (92), and a limiting frame. The limiting frame includes two limiting screws (93), and a limiting rod (94) is connected between the two limiting screws (93). The first limiting plate (91) and the second limiting plate (92) are each provided with a limiting hole (912) for the limiting rod (94) to pass through. Each limiting screw (93) is threaded with a limiting nut for pressing the second limiting plate (92). The first limiting plate (91) is provided with a limiting groove (911) for the third water collecting strip (8) to be inserted into.

5. A lightweight photovoltaic support with built-in waterproof function according to claim 1, characterized in that: The support frame is made of FRP material.

6. A lightweight photovoltaic support with built-in waterproof function according to claim 1, characterized in that: Diagonal bracing (21) is provided between adjacent columns (2).

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