Roof anti-overturning solar photovoltaic system

Abstract

The utility model discloses a roof anti-overturning solar photovoltaic system which comprises a photovoltaic support and a solar photovoltaic unit, the photovoltaic support comprises a base unit, a stand column unit, a front supporting unit and a rear supporting unit, the front supporting unit inclines towards the front lower portion from the top of the front supporting unit, and the rear supporting unit inclines towards the rear lower portion from the top of the rear supporting unit; the solar photovoltaic unit comprises a front photovoltaic panel and a rear photovoltaic panel, the front photovoltaic panel is parallel to the front supporting unit, and the gradient of the front photovoltaic panel is 10%; the rear photovoltaic panel is parallel to the rear supporting unit, and the gradient of the rear photovoltaic panel is 5%. According to the utility model, the south-north double-slope design is adopted, shadow shielding does not exist at all, only the width of the maintenance channel needs to be set between the photovoltaic arrays, the roof area is utilized to the maximum extent, and the generating capacity is further improved; the distribution directions of wind loads borne by the front supporting unit and the rear supporting unit are mutually exclusive, the stability is improved, the weight of the foundation unit is reduced, and damage to the roof caused by too large concentrated loads is further avoided.

Description

Technical Field

[0001] The utility model relates to photovoltaic power generation, in particular to an anti-overturning solar photovoltaic system for a roof. Background Art

[0002] In recent years, distributed rooftop solar photovoltaic systems have seen large-scale development and deployment. High-quality industrial and commercial rooftops are a valuable resource for installing these systems. Currently, rooftop photovoltaic panels are typically arranged facing the sun. To avoid shadows between panels, sufficient spacing is typically required to ensure that each panel receives enough sunlight. While this improves photovoltaic utilization, it also reduces rooftop utilization. Furthermore, with the frequent occurrence of extreme weather in recent years, the number of wind-induced overturning incidents has increased. Ensuring the bracket's wind-resistant overturning resistance requires increasing the weight of the ballast, resulting in excessive concentrated loads that can damage the original roof. Summary of the Invention

[0003] In view of this, the utility model proposes a roof anti-overturning solar photovoltaic system, which not only improves the utilization rate of the roof while ensuring lighting, but also improves the anti-overturning performance of the photovoltaic panels.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The rooftop anti-overturning solar photovoltaic system described in the present invention includes a photovoltaic bracket arranged on the roof and a solar photovoltaic unit arranged on the photovoltaic bracket, the photovoltaic bracket includes a base unit arranged on the roof, a column unit arranged on the base unit, and a front support unit and a rear support unit arranged on the column unit, the front support unit is inclined from its top to the front and downward, and the rear support unit is inclined from the top to the rear and downward; the solar photovoltaic unit includes a front photovoltaic panel fixed on the front support unit and a rear photovoltaic panel arranged on the rear support unit, the front photovoltaic panel is parallel to the front support unit, and the slope of the front photovoltaic panel is 10%; the rear photovoltaic panel is parallel to the rear support unit, and the slope of the rear photovoltaic panel is 5%.

[0006] The beneficial effects are: the utility model adopts a north-south double-slope design, and there is no shadow obstruction at all. It only needs to set the width of the maintenance channel between the photovoltaic arrays to maximize the use of the roof area, thereby increasing the power generation; the wind load distribution directions of the front support unit and the rear support unit of the utility model are mutually exclusive, and the anti-overturning performance of the photovoltaic bracket can be guaranteed on the basis of ensuring the upward stability, thereby improving the stability and reducing the weight of the basic unit. At the same time, the foundation block adopts a long strip pressure block to further avoid damage to the roof caused by excessive concentrated load.

[0007] During actual construction, an SBS waterproof layer can be laid on the roof below the long strip foundation blocks. On the one hand, it evenly distributes the load to the roof and protects the original roof; on the other hand, it also improves the waterproof performance of the roof.

[0008] Preferably, the basic unit includes a row of front foundation blocks arranged at intervals, a row of middle foundation blocks arranged at intervals and a row of rear foundation blocks arranged at intervals; the column unit includes a row of front columns arranged on the front foundation blocks, a row of middle columns arranged on the middle foundation blocks and a row of rear columns arranged on the rear foundation blocks; the front support unit includes a plurality of front oblique beams arranged longitudinally and front purlins arranged transversely on the front oblique beams, one end of the front oblique beams is arranged at the top of the front columns, and the other end thereof is arranged at the top of the middle columns, and the front photovoltaic panels are fixed on the front purlins; the rear support unit includes a plurality of rear oblique beams arranged longitudinally and rear purlins arranged transversely on the rear oblique beams, one end of the rear oblique beams is arranged at the top of the rear columns, and the other end thereof is arranged at the top of the middle columns, and the rear photovoltaic panels are fixed on the rear purlins. The beneficial effect is that the foundation blocks, columns, inclined beams and purlins of the utility model constitute a photovoltaic truss system with north-south double slopes. The load directions they are subjected to are mutually exclusive and can offset each other, thereby improving the anti-overturning performance and reducing the weight requirements of the foundation blocks to a certain extent, thereby reducing the weight of the foundation blocks.

[0009] Preferably, the front foundation block is pre-embedded with connecting bolts, the upper portion of which extends upward from the front foundation block. The column feet at the bottom of the front columns are fixedly connected to the front foundation block via the connecting bolts, providing stable support for the photovoltaic rack. Of course, during actual construction, bolts are also pre-embedded in each middle foundation block and each rear foundation block, which are then fixedly connected to the middle column and rear column respectively.

[0010] Preferably, the photovoltaic support further comprises a plurality of pairs of front and rear diagonal braces, the lower portions of the front and rear diagonal braces being hinged to the lower portion of the center column, the top portions of the front diagonal braces being hinged to the upper-middle portion of the front diagonal beam, and the top portions of the rear diagonal braces being hinged to the upper-middle portion of the rear diagonal beam. The beneficial effect is that the present invention connects the diagonal beams and the center column one by one with diagonal braces, effectively ensuring the integrity and stability of the photovoltaic support.

[0011] Compared with the existing technology, the utility model adopts a north-south double-slope design, which eliminates all shadows. It only needs to set the width of the maintenance channel between the photovoltaic arrays to maximize the use of the roof area, thereby increasing power generation. The wind load distribution directions of the front support unit and the rear support unit of the utility model are mutually exclusive. On the basis of ensuring the upward stability, the anti-overturning performance of the photovoltaic bracket can be guaranteed, the stability is improved, the weight of the basic unit is reduced, and the damage to the roof caused by excessive concentrated loads is further avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 It is a schematic diagram of the second connecting member of the present invention.

[0014] Figure 3 It is a schematic diagram of the wind load of the photovoltaic bracket described in the present invention. DETAILED DESCRIPTION

[0015] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0016] It should be noted that, in the description of the present utility model, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0017] In the description of this utility model, unless otherwise specified or limited, the terms "connected" and "connection" that may appear should be understood in a broad sense. For example, it can mean fixed connection, detachable connection, or integral connection; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium, or it can mean internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood based on specific circumstances.

[0018] like Figure 1 and Figure 3As shown, the rooftop anti-overturning solar photovoltaic system described in the utility model includes a photovoltaic bracket arranged on the roof and a solar photovoltaic unit arranged on the photovoltaic bracket, the photovoltaic bracket includes a base unit arranged on the roof, a column unit arranged on the base unit, and a front support unit and a rear support unit arranged on the column unit, the front support unit is inclined from its top to the front and downward, and the rear support unit is inclined from the top to the rear and downward; the solar photovoltaic unit includes a front photovoltaic panel 1.1 fixed on the front support unit and a rear photovoltaic panel 1.2 arranged on the rear support unit, the front photovoltaic panel 1.1 is parallel to the front support unit, the slope of the front photovoltaic panel 1.1 is 10% and is arranged towards the sun; the rear photovoltaic panel 1.2 is parallel to the rear support unit, the slope of the rear photovoltaic panel 1.2 is 5%. The utility model adopts a north-south double-slope design, and there is no shadow at all. It only needs to set the width of the maintenance channel between the photovoltaic arrays to maximize the use of the roof area, thereby increasing the power generation; the wind load distribution directions of the front support unit and the rear support unit are mutually exclusive, and the anti-overturning performance of the photovoltaic bracket can be guaranteed on the basis of ensuring the upward stability, thereby improving the stability, reducing the weight of the basic unit, and further avoiding damage to the roof caused by excessive concentrated loads.

[0019] Combine Figure 1 It can be seen that the foundation unit includes a row of front foundation blocks 2.1 arranged at intervals, a row of middle foundation blocks 2.2 arranged at intervals, and a row of rear foundation blocks 2.3 arranged at intervals. The column unit includes a row of front columns 3.1 arranged on the front foundation blocks 2.1, a row of middle columns 3.2 arranged on the middle foundation blocks 2.2, and a row of rear columns 3.3 arranged on the rear foundation blocks 2.3. The columns and foundation blocks are in one-to-one correspondence, that is, each foundation block is provided with a column.

[0020] The front support unit includes a plurality of longitudinally arranged front oblique beams 4.1 and front purlins 5.1 transversely fixed to the front oblique beams 4.1. The number of the front oblique beams 4.1 is the same as the number of the center columns 3.2. The front columns 3.1, the center columns 3.2 and the rear columns 3.3 are arranged in groups and correspond to each other front and back. The front end of the front oblique beam 4.1 is set on the top of the front column 3.1, and the rear end of the front oblique beam 4.1 is set on the top of the center column 3.2. The rear end of the front oblique beam 4.1 is higher than its front end, ensuring that the front oblique beam 4.1 is .1 has a slope of 10%; the front photovoltaic panel 1.1 is fixed to the front purlin 5.1, which has a slope of 10%; similarly, the rear support unit includes multiple longitudinally arranged rear oblique beams 4.2 and rear purlins 5.2 arranged transversely on the rear oblique beams 4.2. The rear ends of the rear oblique beams 4.2 are arranged on the tops of the rear columns 3.3, and the front ends of the rear oblique beams 4.2 are arranged on the tops of the center columns 3.2. The rear photovoltaic panel 1.2 is fixed to the rear purlin 5.2, so that the slope of the rear photovoltaic panel 1.2 is controlled at 5%;

[0021] The photovoltaic bracket also includes multiple pairs of front diagonal braces 6.1 and rear diagonal braces 6.2. The lower part of the front diagonal brace 6.1 is hinged to the lower part of the center column 3.2 and the top is hinged to the middle and upper part of the front diagonal beam 4.1; the lower part of the rear diagonal brace 6.2 is hinged to the lower part of the center column 3.2, and the top of the rear diagonal brace 6.2 is hinged to the middle and upper part of the rear diagonal beam 4.2.

[0022] In the present utility model, the foundation block, columns, inclined beams and purlins constitute a north-south double-slope photovoltaic bracket. The wind loads they are subjected to are mutually exclusive and can offset each other, further improving the integrity, stability and wind resistance of the photovoltaic bracket and avoiding overturning as much as possible. In addition, the requirements for the weight of the foundation block are reduced to a certain extent, reducing the weight of the foundation block, thereby reducing the impact of the foundation block on the roof.

[0023] During actual construction, an SBS waterproof layer is laid under each foundation block. On the one hand, it evenly distributes the load to the roof and protects the original roof. On the other hand, it also improves the waterproof performance of the roof.

[0024] Combine Figure 1 It can be seen that connecting bolts are pre-embedded in the front foundation block 2.1, and the upper part of the connecting bolts extends upward from the front foundation block 2.1. The column feet at the bottom of the front column 3.1 are fixed to the front foundation block 2.1 through the connecting bolts, providing stable support for the photovoltaic bracket. During actual construction, bolts are also pre-embedded in each middle foundation block 2.2, so that the column feet at the bottom of the middle foundation block 2.2 are fixed to the middle foundation block 2.2 through the connecting bolts; similarly, the column feet at the bottom of the rear column 3.3 are fixed to the rear foundation block 2.3 through the pre-embedded connecting bolts. In addition, the front foundation block 2.1, the middle foundation block 2.2, and the rear foundation block 2.3 are all long strips of concrete foundations, which can better disperse the load.

[0025] Combine Figure 1 As can be seen, the front pillar 3.1 and the front diagonal beam 4.1, the front diagonal brace 6.1 and the front diagonal beam 4.1, the rear diagonal brace 6.2 and the rear diagonal beam 4.2, and the rear pillar 3.3 and the rear diagonal beam 4.2 are each connected by a triangular first connector 7. For example, the connection between the front pillar 3.1 and the front diagonal beam 4.1: the top of the front pillar 3.1 is hinged to the first connector 7, and the long side of the first connector 7 is fixed to the lower end of the front diagonal beam 4.1. The front oblique beam 4.1 and the rear oblique beam 4.2 are connected to the center column 3.2 through a second connecting member 8. The second connecting member 8 has a vertical mounting slot 8.1, a front mounting slot 8.2 that matches the front oblique beam 4.1, and a rear mounting slot 8.3 that matches the rear oblique beam 4.2. The top of the center column 3.2 is hinged in the vertical mounting slot 8.1, the upper end of the front oblique beam 4.1 is hinged in the front mounting slot 8.2, and the upper end of the rear oblique beam 4.2 is hinged in the rear mounting slot 8.3. The installation is simple and convenient. For details, see Figure 1 and Figure 2 .

[0026] Finally, it should be emphasized that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rooftop anti-overturning solar photovoltaic system, comprising a photovoltaic bracket arranged on the roof and a solar photovoltaic unit arranged on the photovoltaic bracket, characterized in that: The photovoltaic bracket includes a basic unit arranged on the roof, a column unit arranged on the basic unit, and a front support unit and a rear support unit arranged on the column unit, the front support unit is inclined from its top to the front and downward, and the rear support unit is inclined from the top to the rear and downward; the solar photovoltaic unit includes a front photovoltaic panel fixed on the front support unit and a rear photovoltaic panel arranged on the rear support unit, the front photovoltaic panel is parallel to the front support unit, and the slope of the front photovoltaic panel is 10%; the rear photovoltaic panel is parallel to the rear support unit, and the slope of the rear photovoltaic panel is 5%.

2. The rooftop anti-overturning solar photovoltaic system according to claim 1, characterized in that: The foundation unit includes a row of front foundation blocks arranged at intervals, a row of middle foundation blocks arranged at intervals, and a row of rear foundation blocks arranged at intervals; the column unit includes a row of front columns arranged on the front foundation blocks, a row of middle columns arranged on the middle foundation blocks, and a row of rear columns arranged on the rear foundation blocks; The front support unit includes a plurality of front oblique beams arranged longitudinally and front purlins arranged transversely on the front oblique beams, one end of the front oblique beam is arranged on the top of the front column, and the other end thereof is arranged on the top of the middle column, and the front photovoltaic panel is fixed on the front purlin; The rear support unit includes a plurality of longitudinally arranged rear oblique beams and rear purlins transversely arranged on the rear oblique beams, one end of the rear oblique beam is arranged on the top of the rear column, and the other end thereof is arranged on the top of the center column, and the rear photovoltaic panel is fixed on the rear purlin.

3. The rooftop anti-overturning solar photovoltaic system according to claim 2, characterized in that: The front foundation block is pre-buried with connecting bolts, the upper part of the connecting bolts extends upward out of the front foundation block, and the column foot at the bottom of the front column is fixedly connected to the front foundation block through the connecting bolts.

4. The rooftop anti-overturning solar photovoltaic system according to claim 2, characterized in that: The photovoltaic support also includes multiple pairs of front diagonal braces and rear diagonal braces, the lower parts of the front diagonal braces and rear diagonal braces are hinged to the lower part of the central column, the top of the front diagonal brace is hinged to the middle and upper part of the front diagonal beam, and the top of the rear diagonal brace is hinged to the middle and upper part of the rear diagonal beam.

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