Roof photovoltaic support and photovoltaic building with same

Abstract

The utility model relates to the technical field of photovoltaic assemblies, in particular to a roof photovoltaic support and a photovoltaic building with the same, and the roof photovoltaic support comprises a plurality of groups of supporting stand columns arranged at intervals; the supporting main beam is fixedly installed at the top of the supporting stand column, a photovoltaic module is suitable for being installed on the supporting main beam, and the end of the supporting main beam extends to one side of the supporting stand column to form an overhanging part; one end of the main beam inclined strut is fixedly installed on the supporting stand column, and the other end of the main beam inclined strut is installed on the overhanging part of the supporting main beam. The cantilever part of the main beam is supported through the main beam inclined strut, an additional reinforcing structure between the supporting stand column in the middle and the supporting main beam is omitted, and the situation that the mounting position of the photovoltaic module is limited by the additional reinforcing structure in the photovoltaic module mounting process can be avoided; the installation of the photovoltaic assembly on the top of the roof photovoltaic support can be effectively simplified.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, specifically to a rooftop photovoltaic support and a photovoltaic building having the same. Background Technology

[0002] Building-integrated photovoltaics (BIPV) is a technology that integrates solar photovoltaic (PV) power generation products into buildings, providing electricity by mounting solar PV arrays on the exterior surface of the building envelope. BIPV can be divided into two main categories based on how the PV array is integrated with the building: one is the integration of the PV array with the building itself, and the other is the integration of the PV array with the building. Of these two methods, the integration of the PV array with the building is a common form, especially the integration with the building roof. Because the integration of the PV array with the building does not occupy additional ground space, it is the widely used installation method for PV power generation systems in urban areas.

[0003] When photovoltaic (PV) modules are integrated with a building roof, a PV support system is required as the mounting structure. A rooftop PV support system is a metal structural system installed on the top of a building to fix and support solar PV modules; it is typically made of aluminum alloy or galvanized steel. Rooftop PV supports are securely fixed using clamps, rails, or counterweights.

[0004] In existing technologies, such as Figure 1 and Figure 2 As shown, due to the large lateral span of the rooftop photovoltaic (PV) system, corner braces are installed on both sides of the uprights. These corner braces are typically made of angle steel, with one end fixedly connected to the upright and the other end connected to the main beam of the system, thus providing stable support for the main beam. Simultaneously, due to the height of the uprights, horizontal tie beams are required between adjacent uprights to ensure their structural strength. After installation, these tie beams and the corner braces on both sides of the uprights restrict the installation of the PV modules and other structural elements within the building. Furthermore, this results in a higher overall steel consumption for the rooftop PV system and a higher load-bearing capacity on the building roof. Utility Model Content

[0005] In view of this, the present invention provides a roof photovoltaic bracket and a photovoltaic building having the same, to solve the problems of inconvenience in installing photovoltaic modules or other building structures on existing roof photovoltaic brackets and the large weight of the roof photovoltaic brackets themselves.

[0006] In a first aspect, this utility model provides a rooftop photovoltaic support system, comprising:

[0007] Support columns are installed in multiple sets at intervals;

[0008] A main support beam is fixedly installed on the top of the support column. Photovoltaic modules are suitable for installation on the main support beam. The end of the main support beam extends to one side of the support column to form a cantilever.

[0009] The main beam diagonal brace has one end fixedly installed on the support column and the other end installed on the cantilevered part of the main beam.

[0010] Beneficial Effects: The rooftop photovoltaic (PV) support structure provided by this utility model consists of a main supporting beam and multiple sets of supporting columns. The supporting columns are installed on the bottom load-bearing structure, and the main supporting beam is fixedly installed on the top. PV modules are suitable for fixed installation on the main supporting beam. By supporting the cantilevered portion of the main beam only through diagonal bracing, the additional reinforcing structure between the intermediate supporting columns and the main supporting beam is eliminated. This significantly reduces the self-weight of the top structure of the rooftop PV support, thereby reducing the pressure on the supporting columns and increasing their stability. Simultaneously, by eliminating the additional reinforcing structure between the intermediate supporting columns and the main supporting beam, the installation position of the PV modules is not restricted by the additional reinforcing structure during installation, effectively simplifying the installation of PV modules on the top of the rooftop PV support.

[0011] In one optional embodiment, the yield strength of the supporting main beam is not less than 460 MPa, the length of the cantilever is 1.5 meters to 2 meters, and multiple sets of diagonal braces are provided at intervals on the main beam.

[0012] Beneficial effects: By using a support beam with high yield strength, the support beam itself can ensure high support strength, and the length of the cantilevered part extending from both sides of the support column is longer, which can increase the support area at the top of the support beam. At the same time, multiple sets of main beam diagonal braces are used to support the support beam to improve the stability of the cantilevered part, so that more photovoltaic modules can be installed on the support beam.

[0013] In one alternative implementation, multiple sets of main beam diagonal braces are arranged in parallel.

[0014] Beneficial effects: By setting multiple sets of main beam diagonal braces in parallel, the stress on the cantilever section is more even, effectively reducing local stress concentration and improving the overall structural stability.

[0015] In one alternative embodiment, multiple sets of support columns are arranged at intervals along the extension direction of the main support beam, and a cross tie beam is installed between the support columns near the end of the main support beam and the adjacent support columns.

[0016] Beneficial effects: By adding a cross brace between the support columns near the end of the main support beam, it is possible to effectively prevent the roof photovoltaic bracket from deforming as a whole due to insufficient support strength of the support columns at both ends, thus ensuring the overall support strength and anti-tilting ability of the roof photovoltaic bracket at all ends.

[0017] In one alternative implementation, a crossbeam brace is installed between the crossbeam and the support column.

[0018] Beneficial effects: By adding diagonal bracing between the tie beam and the support column, the structural stability between the tie beam and the support column is further enhanced, forming a stable triangular support system; the diagonal bracing can reduce stress concentration at the connection between the tie beam and the column, prevent local deformation, and enhance the load-bearing capacity of the support.

[0019] In one alternative implementation, the crossbeams between adjacent support columns are arranged in an "eight" shape.

[0020] Beneficial effects: By arranging the crossbeams and diagonal braces between adjacent support columns in a figure-eight shape, the crossbeams and diagonal braces effectively disperse stress and ensure symmetrical force distribution between the crossbeams and diagonal braces on both sides to cancel out the lateral forces, thereby reducing the internal forces of the roof photovoltaic system and improving the overall stability of the roof photovoltaic system.

[0021] In one alternative implementation, a height difference is provided between adjacent support columns to allow the main support beam to be installed at an angle.

[0022] Beneficial effects: By setting a height difference between adjacent support columns, the main support beam is arranged at an angle, which not only helps photovoltaic modules obtain the best illumination angle to improve power generation efficiency, but also promotes the natural sliding of rainwater and snow by using the inclined structure, reducing dust and snow load; the reasonable design of the height difference can also optimize the overall center of gravity distribution of the support structure and enhance the stability of the support structure.

[0023] In one alternative embodiment, the decorative element is fixedly installed on the support column, and the decorative element completely covers the gap between the support columns in the extension direction of the main support beam.

[0024] Beneficial effects: By installing decorative parts on the support columns and making them completely cover the gaps between the columns along the direction of the main support beam, not only is the overall aesthetics of the photovoltaic bracket improved, but the decorative parts can also play a role in dust prevention and rain protection.

[0025] In one alternative implementation, the decorative element extends downward to the base of the supporting column.

[0026] Beneficial effects: By extending the decorative elements downwards to the bottom of the supporting columns to form a complete facade coverage, the connection between the photovoltaic bracket and the building roof is not only smoother and more aesthetically pleasing, but also effectively prevents rainwater and dust from entering the space at the bottom of the bracket, reducing the risk of corrosion and maintenance needs, and further improving the overall structure's durability and environmental adaptability.

[0027] Secondly, this utility model also provides a photovoltaic building, including the aforementioned roof photovoltaic support structure.

[0028] Since building-integrated photovoltaics (BIPV) systems include rooftop photovoltaic (BIPV) brackets, which have the same effect as rooftop BIPV brackets, they will not be elaborated on here. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A schematic diagram of existing rooftop photovoltaic (PV) mounting systems;

[0031] Figure 2 This is a cross-sectional view of the crossbeam of a rooftop photovoltaic support system in the existing technology.

[0032] Figure 3 This is a schematic diagram of the rooftop photovoltaic support system of this utility model;

[0033] Figure 4 This is a cross-sectional view of the horizontal tie beam of the roof photovoltaic support of this utility model;

[0034] Figure 5 This is a schematic diagram of the cantilevered part of the main beam of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Supporting main beam; 2. Supporting column; 3. Horizontal tie beam; 4. Decorative parts; 5. Horizontal beam diagonal brace; 6. Main beam diagonal brace; 7. Cantilever section. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0041] In existing technologies, rooftop photovoltaic (PV) brackets are made of materials such as aluminum alloy or galvanized steel and are fixed to the building roof using clamps, guide rails, or counterweights to support the PV modules. For example... Figure 1 and Figure 2 As shown, to address the stability issues caused by the large lateral span and high column height of the support structure, angle steel corner braces are typically installed on both sides of the column to reinforce the main beam support, and horizontal tie beams 3 are added between adjacent columns to improve column strength. However, this design has significant drawbacks: the installation of corner braces and horizontal tie beams 3 restricts the layout space for photovoltaic modules and other building structures, while increasing the steel consumption of the support structure and the roof load, potentially affecting building safety and economy.

[0042] The following is combined Figures 1 to 5 The following describes embodiments of the present invention.

[0043] According to an embodiment of the present invention, a roof photovoltaic support structure is provided, comprising: a support column 2, multiple sets of which are arranged at intervals; a support main beam 1, which is fixedly installed on the top of the support column 2, and the support main beam 1 is suitable for installing photovoltaic modules, with the end of the support main beam 1 extending to one side of the support column 2 to form a cantilever 7; and a main beam diagonal brace 6, one end of which is fixedly installed on the support column 2, and the other end of which is installed on the cantilever 7 of the support main beam 1.

[0044] The rooftop photovoltaic support structure provided by this utility model includes a main frame consisting of a supporting main beam 1 and supporting columns 2. The supporting columns are installed on the bottom load-bearing structure, and the supporting main beam is fixedly installed on the top. Photovoltaic modules are suitable for fixed installation on the supporting main beam. The supporting main beam 1 is used to install the photovoltaic modules. The lower end of the supporting column 2 is fixed to the building foundation, and the upper end of the supporting column 2 forms a stable frame with the supporting main beam 1. By setting a main beam diagonal brace 6 in the support structure, one end of the main beam diagonal brace 6 is connected to the supporting column 2, and the other end is fixed to the cantilevered part 7 of the main beam, the structural strength of the cantilevered area is effectively strengthened. Compared with the traditional corner bracing scheme, the self-weight of the components is significantly reduced, while ensuring that the overall load-bearing capacity is not reduced. The extension of the cantilevered part 7 expands the space for photovoltaic module arrangement, and the triangular stability principle of the diagonal brace strengthens the deformation resistance of the cantilever end, achieving a unity of lightweight, high stability, and optimized space utilization. It has comprehensive advantages of simple structure, convenient construction, and high load-bearing efficiency. By supporting the cantilevered portion of the main beam solely with diagonal bracing, eliminating the need for additional reinforcement structures between the intermediate support columns and the main beam, the self-weight of the rooftop photovoltaic (PV) system's top structure can be significantly reduced. This reduces pressure on the support columns, increasing their stability. Furthermore, eliminating the additional reinforcement structures between the intermediate support columns and the main beam avoids limiting the installation position of the PV modules during installation, effectively simplifying the installation process.

[0045] In some embodiments, combined with Figure 3 As shown, the yield strength of the supporting main beam 1 is not less than 460MPa, the length of the cantilever 7 is 1.5m to 2m, and multiple sets of diagonal braces 6 are set at intervals.

[0046] By employing a main support beam 1 with a yield strength ≥460MPa, coupled with a cantilever section 7 of 1.5m to 2m in length and multiple sets of main beam diagonal braces 6 spaced out, the load-bearing strength of the support structure is significantly improved while ensuring structural lightweighting. This not only meets the installation requirements of large-span photovoltaic modules but also effectively distributes the load at the cantilever end, preventing main beam deformation. The spaced layout of the diagonal braces further enhances the stability of the cantilever structure, balancing space utilization and structural safety. The use of a main support beam with high yield strength ensures high support strength, allowing for a longer cantilever section extending from both sides of the support column. This increases the support area at the top of the main support beam. Simultaneously, the multiple sets of main beam diagonal braces further support the main support beam, enhancing the stability of the cantilever section and enabling the installation of more photovoltaic modules on the main support beam. Correspondingly, due to the high strength of the main support beam, the span between support columns can be increased, improving user acceptance and enhancing product competitiveness.

[0047] Furthermore, the multiple sets of main beam diagonal braces 6 are arranged in parallel. By arranging the multiple sets of main beam diagonal braces 6 in parallel, the stress on the cantilever section 7 is more evenly distributed, effectively reducing local stress concentration and improving the overall structural stability.

[0048] It is worth noting that, combined with Figure 5 As shown, in this embodiment, the main beam diagonal brace 6 is a double diagonal brace structure, and the cantilever 7 is at least 2 meters long. One of the main beam diagonal braces 6 is located at the center of the cantilever length of the supporting main beam 1, and the other main beam diagonal brace 6 is located less than 0.2 meters away from the end of the cantilever of the supporting main beam 1. The specific dimensions of the main beam diagonal brace 6 range from 0.75 meters to 1 meter or from 1.5 meters to 2 meters.

[0049] Furthermore, the angle between the main beam diagonal brace 6 and the supporting column 2 is between 45° and 60°.

[0050] In some embodiments, combined with Figure 4 As shown, multiple sets of support columns 2 are arranged at intervals along the extension direction of the main support beam 1, and a cross tie beam 3 is installed between the support column 2 near the end of the main support beam 1 and the adjacent support column 2.

[0051] By adding a crossbeam 3 between the supporting columns 2 near the end of the main supporting beam 1, the overall rigidity and anti-tilting ability of the bracket end are effectively enhanced. The crossbeam 3 and the supporting columns 2 form a stable frame structure, optimizing the stress distribution between the columns. This effectively prevents the overall deformation of the roof photovoltaic bracket caused by insufficient support strength of the supporting columns at both ends, ensuring the overall support strength and anti-tilting ability of the roof photovoltaic bracket end.

[0052] Furthermore, a crossbeam brace 5 is installed between the crossbeam 3 and the supporting column 2. By adding the crossbeam brace 5 between the crossbeam 3 and the supporting column 2, the structural stability of the support is further enhanced, forming a stable triangular support system. The crossbeam brace 5 can significantly reduce stress concentration at the connection between the crossbeam 3 and the column, prevent local deformation, and enhance the load-bearing capacity of the support. Specifically, the crossbeam brace 3 is a 40×50×1.8 rectangular tube.

[0053] It is worth noting that the crossbeam braces 5 between adjacent supporting columns 2 are arranged in an "eight" shape. By arranging the crossbeam braces 5 between adjacent supporting columns 2 in an "eight" shape, the crossbeam braces effectively disperse stress and ensure symmetrical force distribution between the crossbeam braces on both sides to cancel out the lateral forces. This reduces the internal forces of the roof photovoltaic system, improves the overall stability of the roof photovoltaic system, effectively disperses stress and reduces the lateral displacement of the columns, while avoiding the problem of unidirectional force concentration on the braces, significantly enhancing the stability of the system.

[0054] In some embodiments, combined with Figure 4As shown, a height difference is set between adjacent support columns 2 to make the main support beam 1 inclined. By setting a height difference between adjacent support columns 2, the main support beam 1 is arranged at an inclination, which not only helps the photovoltaic modules obtain the best illumination angle to improve power generation efficiency, but also promotes the natural sliding of rainwater and snow, reducing dust and snow load. The reasonable design of the height difference can also optimize the overall center of gravity distribution of the support structure and enhance the stability of the support structure.

[0055] In some embodiments, the decorative element 4 is fixedly installed on the support column 2, and the decorative element 4 completely covers the gap between the support columns 2 in the extending direction of the main support beam 1. By installing the decorative element 4 on the support column 2 and making it completely cover the column gap along the direction of the main support beam 1, not only is the overall aesthetics of the photovoltaic bracket improved, but the decorative element 4 also serves to prevent dust and rain, reducing the accumulation of dirt in the column gap. Specifically, the decorative element 4 is a grid structure.

[0056] It is worth noting that the decorative component 4 extends downwards to the bottom of the supporting column 2. By extending the decorative component 4 downwards to the bottom of the supporting column 2, a complete facade coverage is formed, which not only makes the connection between the photovoltaic bracket and the building roof smoother and more aesthetically pleasing, but also effectively prevents rainwater and dust from entering the space at the bottom of the bracket, reducing corrosion risks and maintenance needs, and further improving the overall structure's durability and environmental adaptability.

[0057] Secondly, this utility model also provides a photovoltaic building, including the roof photovoltaic support and photovoltaic modules described in this utility model. Purlins are fixedly installed on the supporting main beam of the roof photovoltaic support, and the photovoltaic modules are fixedly installed on the purlins. By adopting the roof photovoltaic support provided in this application, the amount of steel used in the roof of the photovoltaic building is reduced, thereby reducing the load on the roof. By increasing the steel strength of the support and reducing the number of horizontal tie beams 3 between the columns, the aesthetic appeal is enhanced, and the installation of photovoltaic modules on the supporting main beam is facilitated, improving the installation efficiency of the photovoltaic modules. The increased length of the cantilever 7 increases the installed capacity of the roof photovoltaic system while reducing the cost of the support; it also reduces on-site welding costs and effectively improves construction efficiency.

[0058] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A rooftop photovoltaic support system, characterized in that, include: Support columns (2) are arranged in multiple sets at intervals; A supporting main beam (1) is fixedly installed on the top of the supporting column (2). The supporting main beam (1) is suitable for installing photovoltaic modules. The end of the supporting main beam (1) extends to one side of the supporting column (2) to form a cantilever (7). The main beam diagonal brace (6) has one end fixedly installed on the support column (2) and the other end installed on the cantilever part (7) of the support main beam (1).

2. The rooftop photovoltaic rack of claim 1, wherein, The yield strength of the main supporting beam (1) is not less than 460 MPa, the length of the cantilever part (7) is 1.5 meters to 2 meters, and multiple sets of the main beam diagonal braces (6) are arranged at intervals.

3. The rooftop photovoltaic rack of claim 2, wherein, The multiple sets of main beam diagonal braces (6) are arranged in parallel.

4. The racking system of any of claims 1 to 3, wherein, Multiple sets of the supporting columns (2) are arranged at intervals along the extension direction of the supporting main beam (1), and a cross tie beam (3) is installed between the supporting column (2) near the end of the supporting main beam (1) and the adjacent supporting column (2).

5. The rooftop photovoltaic rack of claim 4, wherein, A crossbeam brace (5) is installed between the crossbeam (3) and the supporting column (2).

6. The rooftop photovoltaic rack of claim 5, wherein, The crossbeam braces (5) between adjacent supporting columns (2) are arranged in an "eight" shape.

7. The rooftop photovoltaic rack of any of claims 1 to 3, wherein, A height difference is provided between adjacent support columns (2) so that the support beam (1) is inclined.

8. The rooftop photovoltaic support according to any one of claims 1 to 3, characterized in that, It also includes a decorative element (4), which is fixedly installed on the support column (2) and completely covers the gap between the support columns (2) in the extension direction of the support main beam (1).

9. The rooftop photovoltaic rack of claim 8, wherein, The decorative element (4) extends downward to the bottom of the supporting column (2).

10. A photovoltaic building, characterized by The rooftop photovoltaic support system is as described in any one of claims 1 to 9.

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