A type of large-span frame photovoltaic support for roofs

Abstract

This utility model discloses a large-span frame-type photovoltaic support for roofs, including columns, a fixing plate fixedly connected to the top of the columns, a crossbeam fixedly connected to the fixing plate, a longitudinal beam connected to the crossbeam, and a purlin at the top of the crossbeam; bottom longitudinal beams are provided at the bottom of the crossbeams on both sides of the longitudinal beams, and the crossbeams, longitudinal beams and bottom longitudinal beams are connected to form a frame structure. The large-span frame-type photovoltaic support for roofs of this utility model can meet the requirements for safe use of roofs and the needs for laying photovoltaic modules on the roof space. It has a stable structure and strong robustness.

Description

Technical Field

[0001] This utility model belongs to the field of solar photovoltaic panel technology. Specifically, this utility model relates to a large-span frame photovoltaic support for roofs. Background Technology

[0002] Photovoltaic power generation has developed rapidly, with installed capacity increasing year by year. The construction form of power stations is shifting from centralized to distributed, which facilitates power consumption. In particular, large-scale photovoltaic power generation for self-consumption on industrial and commercial roofs can effectively reduce electricity costs. However, many industrial and commercial roofs are designed with low load-bearing capacity, making it impossible to directly lay brackets on the roof panels. Furthermore, some factory roofs require a certain space between the photovoltaic modules and the roof, requiring the exposure of skylights, etc. Existing installation methods such as counterweight foundations and clamps are too heavy and lack flexibility, failing to meet the requirements for safe use on roofs and maximizing the use of roof space for photovoltaic module installation. Therefore, this utility model proposes a large-span frame-type photovoltaic bracket for roofs to specifically solve this problem.

[0003] Patent CN 116591299 A, published on August 15, 2023, discloses a building roof photovoltaic system and its construction method. The system includes a building body, a photovoltaic curtain wall installed on the building body, and a photovoltaic roof installed on top of the building body. The photovoltaic curtain wall includes supporting members connected to the outer wall of the building body and external photovoltaic modules connected to the supporting members. The photovoltaic roof includes a photovoltaic bracket installed on top of the building body and top photovoltaic modules fixed to the photovoltaic bracket. However, this building roof photovoltaic system does not solve the aforementioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a large-span frame-type photovoltaic support for roofs that meets the requirements for safe use on roofs and the needs for installing photovoltaic modules on roof spaces, and has a stable and robust structure.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] The roof uses a large-span frame-type photovoltaic support system, which includes columns, a fixing plate fixedly connected to the top of the column, a crossbeam fixedly connected to the fixing plate, a longitudinal beam connected to the crossbeam, and a purlin at the top of the crossbeam; bottom longitudinal beams are provided at the bottom of the crossbeam on both sides of the longitudinal beam, and the crossbeam, longitudinal beam and bottom longitudinal beam are connected to form a frame structure.

[0007] The crossbeams include side crossbeams, reinforcing crossbeams, and secondary crossbeams. The side crossbeams are located on both sides of the frame structure. The reinforcing crossbeams and secondary crossbeams are arranged parallel to each other and alternately between the side crossbeams. The bottom longitudinal beam is bolted to the bottom of both ends of the reinforcing crossbeams and secondary crossbeams. The bottom longitudinal beam is parallel to the longitudinal beam. The longitudinal beam is located above the column and passes through the secondary crossbeams and reinforcing crossbeams. The side crossbeams are connected to the ends of the longitudinal beam.

[0008] The side beams, reinforcing beams, and secondary beams are all connected to the longitudinal beams by L-shaped connecting plates.

[0009] A beam reinforcement plate is fixedly connected to the inner side of the side beam. The beam reinforcement plate has a C-shaped structure. The side beam and the beam reinforcement plate are fitted together. The beam reinforcement plate is located above the column.

[0010] The secondary crossbeam, longitudinal beam, and bottom longitudinal beam are all C-shaped steel. The side crossbeam and reinforcing crossbeam are both constructed by welding two oppositely arranged C-shaped steels. The cross sections of the side crossbeam and reinforcing crossbeam are I-shaped.

[0011] The columns are evenly distributed along the midline of the frame structure.

[0012] The columns are arranged in rows, and the reinforcing beams and secondary beams on each column are of equal length, while the length of the side beams is greater than that of the reinforcing beams.

[0013] The photovoltaic support structure is made of high-strength weather-resistant steel.

[0014] The technical advantages of this utility model are as follows: By using the large-span frame-type photovoltaic bracket for roofing, the load of the entire bracket is transferred to the building structure by installing the columns on the main beam of the roof structure, ensuring the load safety of the roof; the frame structure unit is formed by connecting the horizontal and vertical beams, which makes the laying method more flexible and can reserve space for the installation of skylights and light-transmitting panels, meeting the requirements for safe use of the roof and the needs for laying photovoltaic modules on the roof space.

[0015] The support frame structure unit on the single row of columns is symmetrical about the column as the axis of symmetry. Adjacent frame structure units are connected by side beams to form a large frame structure. The support structure is stable, and the span between columns reaches more than 10 meters. The use of C-shaped steel instead of I-beams as the main structure of the support significantly reduces the weight of the support and solves the problems of weak structural integrity and inflexible installation of photovoltaic support at present. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following:

[0017] Figure 1 This is an isometric structural schematic diagram of the large-span frame-type photovoltaic support for roofing of this utility model.

[0018] Figure 2 This is a top view of the large-span frame-type photovoltaic support for roofs of this utility model;

[0019] Figure 3 This is the main view of the large-span frame-type photovoltaic support for roofing of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation of the crossbeam reinforcement plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the installation of the L-shaped connecting plate of this utility model;

[0022] Figure 6 This is a schematic diagram of a photovoltaic module installation according to one embodiment.

[0023] The markings in the diagram are: 1. Column; 2. Fixing plate; 3. Reinforcing plate for crossbeam; 4. Side crossbeam; 5. Bottom longitudinal beam; 6. Reinforcing crossbeam; 7. Secondary crossbeam; 8. Longitudinal beam; 9. L-shaped connecting plate; 10. Purlin; 11. Short crossbeam. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this invention, and to facilitate its implementation.

[0025] like Figures 1 to 5 As shown, the roof uses a large-span frame-type photovoltaic support system, including a column 1, a fixing plate 2 fixedly connected to the top of the column 1, a crossbeam fixedly connected to the fixing plate 2, a longitudinal beam 8 connected to the crossbeam, and a purlin 10 provided at the top of the crossbeam; bottom longitudinal beams 5 are provided at the bottom of the crossbeam on both sides of the longitudinal beam 8, and the crossbeam, longitudinal beam 8 and bottom longitudinal beam 5 are connected to form a frame structure. The column 1 is bolted to the main beam of the roof structure, eliminating the need for counterweight and reducing the roof load. The column 1 has the same large span as the main beam of the roof. The large span can meet the photovoltaic installation needs of more roofs with poor load-bearing capacity. The large span allows for more flexible installation of photovoltaic modules, and the module positions can be adjusted arbitrarily according to the actual roof conditions to meet the photovoltaic installation needs of different roof conditions. The top of the column 1 is welded with a fixing plate 2 and a fixing beam. The two are pre-installed before roof work. The side beams 4, reinforcing beams 6, secondary beams 7, longitudinal beams 8 and bottom longitudinal beams 5 are connected to form a frame structure, which serves as the frame structure unit of the overall photovoltaic bracket. Multiple frame structure units can be connected to form a frame-type photovoltaic bracket. The frame structure allows for the setting of reserved space to avoid the light-transmitting panels or explosion-proof windows. The purlins 10 are used to lay photovoltaic modules and are located on the upper and lower sides of the reserved space. The purlins 10 can also be set on the short beams 11 and the side beams 4 to make full use of the roof space and improve the space utilization rate of the photovoltaic modules.

[0026] like Figure 1 As shown, the crossbeam includes a side crossbeam 4, a reinforcing crossbeam 6, and a secondary crossbeam 7. The side crossbeam 4 is located on both sides of the frame structure. The reinforcing crossbeam 6 and the secondary crossbeam 7 are arranged parallel to each other and alternately between the side crossbeams 4. The bottom longitudinal beam 5 is bolted to the bottom of both ends of the reinforcing crossbeam 6 and the secondary crossbeam 7. The bottom longitudinal beam 5 is parallel to the longitudinal beam 8. The longitudinal beam 8 is located above the column 1. The longitudinal beam 8 passes through the secondary crossbeam 7 and the reinforcing crossbeam 6. The side crossbeam 4 is connected to the end of the longitudinal beam 8. Each frame structure includes two side beams 4. The side beams 4, reinforcing beams 6, and secondary beams 7 are all mounted on fixed plates 2. The side beams 4 are fixed to the fixed plates 2 of the columns 1 on both sides of the frame structure. The secondary beams 7 and reinforcing beams 6 are alternately distributed on the fixed plates 2 between the side beams 4. A bottom longitudinal beam 5 is vertically arranged between the side beams 4. The ends of the secondary beams 7 and reinforcing beams 6 are connected to the bottom longitudinal beam 5. The frame structure composed of the side beams 4, reinforcing beams 6, secondary beams 7, longitudinal beams 8, and bottom longitudinal beams 5 has high structural reliability, good overall performance, and meets the requirements for large-span photovoltaic module installation.

[0027] like Figure 5 As shown, the side crossbeam 4, reinforcing crossbeam 6, and secondary crossbeam 7 are all connected to the longitudinal beam 8 by L-shaped connecting plates 9. The L-shaped connecting plates 9 have pre-drilled holes for bolt connections. The longitudinal beam 8 connects the side crossbeam 4, reinforcing crossbeam 6, and secondary crossbeam 7 via the L-shaped connecting plates 9. Two L-shaped connecting plates 9 are used on both sides of the longitudinal beam 8 to fix each side crossbeam 4, reinforcing crossbeam 6, or secondary crossbeam 7, providing a reliable connection at the penetration and connection points of the aforementioned components, while also creating a localized reinforcement effect and improving the overall structural strength of the photovoltaic support.

[0028] like Figure 4 As shown, a crossbeam reinforcing plate 3 is fixedly connected to the inner side of the side crossbeam 4. The crossbeam reinforcing plate 3 has a C-shaped structure, and the side crossbeam 4 is fitted with the crossbeam reinforcing plate 3. The crossbeam reinforcing plate 3 is located above the column 1. The crossbeam reinforcing plate 3 is installed inside the crossbeam connected to the fixed plate 2 above the column 1 to provide local reinforcement at the location of stress concentration. The crossbeam reinforcing plate 3 uses C-shaped steel with a specification slightly smaller than that of the side crossbeam 4. All three sides of the crossbeam reinforcing plate 3 are fitted with the inside of the side crossbeam 4 and are connected to the side crossbeam 4 by bolts, which improves the local strength at this location and helps to improve the overall structural strength of the photovoltaic support.

[0029] like Figure 1As shown, the secondary crossbeam 7, longitudinal beam 8, and bottom longitudinal beam 5 are all C-shaped steel. The side crossbeam 4 and reinforcing crossbeam 6 are both constructed by welding two oppositely arranged C-shaped steel sections. The cross-sections of the side crossbeam 4 and reinforcing crossbeam 6 are I-shaped. Compared with traditional large-span supports using I-beams, the above structure significantly reduces weight, further reducing roof load and improving roof safety. The side crossbeam 4 and reinforcing crossbeam 6 adopt a structural form of two C-shaped steel sections stacked to form an H-shaped steel section, increasing strength. The bottom longitudinal beam 5 uses C-shaped steel of the same specifications as the side crossbeam 4, with the C-shaped steel opening downwards. This facilitates the connection of the bottom longitudinal beam 5 with the side crossbeam 4, reinforcing beam 6, and secondary crossbeam 7, while also improving the bending resistance of the bottom longitudinal beam 5, ensuring the structural stability of the column 1 frame structural unit.

[0030] like Figure 1 As shown, the columns 1 are evenly distributed along the midline of the frame structure. This structure ensures the overall frame's stability; the columns 1 are positioned at the axis of symmetry of the crossbeams, or, depending on the situation, near the axis of symmetry. The support units on each row of columns 1 are interconnected via side crossbeams 4, reinforcing crossbeams 6, secondary crossbeams 7, bottom longitudinal beams 5, and longitudinal beams 8 to form a frame structure unit. This frame structure offers better structural stability and strength. Furthermore, the columns 1, positioned at or near the axis of symmetry of the frame structure unit, allow for stress balance through equal or nearly equal gravity on both sides, resulting in good stability. The side crossbeams 4 are interconnected and run through the entire support structure, connecting the frame structures formed by each row of columns 1 into a unified whole, creating a larger frame structure with enhanced stability and excellent performance.

[0031] The columns 1 are arranged in rows. The reinforcing beams 6 and secondary beams 7 on each column 1 are of equal length, while the side beams 4 are longer than the reinforcing beams 6. Adjacent frame structure units are connected to each other through the side beams 4, which run through the entire support structure, thereby connecting the frame structures formed by each column 1 into a whole, forming a unified frame structure. Space is reserved between the frame structures for the installation of skylights or explosion-proof windows.

[0032] The photovoltaic support structure is made of high-strength weather-resistant steel. All mounting brackets utilize high-strength weather-resistant steel, giving them excellent corrosion resistance and eliminating the need for anti-corrosion coatings, ensuring a service life of over 40 years and guaranteeing the stable operation of the photovoltaic power generation system. During roof construction, all components within the frame structure are connected using bolts, eliminating welding and enhancing roof construction safety.

[0033] like Figures 1 to 3As shown, the large-span frame-type photovoltaic support for the roof includes multiple column 1 frame structure units arranged in sequence. The column 1 is installed on the main beam of the roof structure. A fixing plate 2 is set at the top of the column 1. Side crossbeams 4 are set on the fixing plates 2 at both ends. A bottom longitudinal beam 5 is set vertically between the two side crossbeams 4. The bottom longitudinal beam 5 is divided into two sides of the column 1 with the column 1 as the axis of symmetry. A reinforcing crossbeam 6 and a secondary crossbeam 7 are set parallel between the two side crossbeams 4. The reinforcing crossbeam 6 and the secondary crossbeam 7 are alternately fixed on the fixing plate 2 and connected to the bottom longitudinal beam 5 at both ends. A crossbeam reinforcing plate 3 is attached to the inner wall of the side crossbeam 4 at the connection position between the side crossbeam 4 and the fixing plate 2. A longitudinal beam 8 is installed between the parallel crossbeams through an L-shaped connecting plate 9. The longitudinal beam 8 is bolted to the upper part of the fixing plate 2 through the L-shaped connecting plate 9 between the reinforcing crossbeam 6 and the secondary crossbeam 7. A purlin 10 is set on the reinforcing crossbeam 6 and the secondary crossbeam 7. Photovoltaic modules are laid on the purlin 10.

[0034] It should be noted that the photovoltaic support system consists of sequentially arranged column 1 frame structure units for installing photovoltaic modules. By installing the column 1 on the main beam of the roof structure, the load on the roof panels is reduced, increasing roof safety. The side beams 4, reinforcing beams 6, and secondary beams 7 enable the installation and fixation of purlins 10. The photovoltaic modules are then installed on the purlins 10. If there are skylights or explosion-proof windows on the roof, space needs to be reserved. The column 1 is installed in the center between two skylights or explosion-proof windows. The bottom longitudinal beam 5 is fixed to the side beams 4 according to the position of the skylights or explosion-proof windows. The reinforcing beams 6 and secondary beams 7 are fixed to the bottom beams at both ends, forming a frame structure unit with the column 1 as the axis of symmetry. The side beams 4 extend to both sides and connect with the adjacent column 1 frame structure units to form a large frame. The structure has high strength, good stability, and flexible distribution of photovoltaic modules, making installation convenient.

[0035] The figure shows a partial distribution diagram of photovoltaic modules in an embodiment. The span between columns 1 is 12 meters. The blank space is for explosion-proof windows and reserved space for window maintenance. Because the main roof beam is not in the center of the windows, the columns 1 are off the axis of symmetry of the unit frame structure. A short beam 11 is added at the position of the side beam 4, and photovoltaic modules are laid on it to make full use of the roof space.

[0036] Working principle and usage steps: When using, install and fix the column 1 on the main beam of the roof structure, with each column 1 in a straight line. The fixing plate 2 is pre-welded to the upper end of the column 1. Place the crossbeam reinforcing plate 3 inside the side crossbeam 4 where it connects with the fixing plate 2. Then fix the side crossbeam 4 on the fixing plates 2 at both ends. Next, install the bottom longitudinal beam 5 at the designed position under the side crossbeam 4. Install the secondary crossbeam 7 and the reinforcing crossbeam 6 alternately and parallelly on the fixing plate 2 between the two side crossbeams 4. The middle position of the secondary crossbeam 7 and the reinforcing crossbeam 6 is connected and fixed to the fixing plate 2, and the two ends are connected and fixed to the bottom longitudinal beam 5. Use the L-shaped connecting plate 9 to vertically install the longitudinal beam 8 between the side crossbeam 4, the reinforcing beam 6 and the secondary crossbeam 7. The purlin 10 is vertically installed on the crossbeam for installing photovoltaic modules.

[0037] The roof uses a large-span frame-type photovoltaic support system. By installing the columns 1 on the main beam of the roof structure, the load of the entire support system is transferred to the building structure from the main beam, ensuring the load safety of the roof. The span of the columns 1 is the same as that of the main beam of the roof, which can meet the photovoltaic installation needs of more roofs with poor load-bearing capacity. The frame structure unit is formed by connecting the horizontal beams and vertical beams 8, which can reserve space for setting up skylights and light-transmitting panels, meet the exposure requirements of skylights and light-transmitting panels, etc., and have greater flexibility in the installation method, meeting the requirements for safe use of the roof and the need to install photovoltaic modules in the roof space.

[0038] The support frame structure unit on the single row of columns 1 is symmetrical about the column 1 as the axis of symmetry. Adjacent frame structure units are connected by side beams 4 to form a large frame structure. The support structure is stable, and the span between columns 1 reaches more than 10 meters. The use of C-shaped steel instead of I-beams as the main structure of the support significantly reduces the weight of the support and solves the problems of weak structural integrity and inflexible installation of photovoltaic support at the present stage.

[0039] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A large-span frame-type photovoltaic support for rooftops, characterized in that: The structure includes a column (1), a fixing plate (2) fixedly connected to the top of the column (1), a crossbeam fixedly connected to the fixing plate (2), a longitudinal beam (8) connected to the crossbeam, and a purlin (10) provided at the top of the crossbeam; bottom longitudinal beams (5) are provided on both sides of the longitudinal beam (8) at the bottom of the crossbeam, and the crossbeam, longitudinal beam (8) and bottom longitudinal beam (5) are connected to form a frame structure.

2. The large-span frame-type photovoltaic support for roofs according to claim 1, characterized in that: The crossbeams include side crossbeams (4), reinforcing crossbeams (6) and secondary crossbeams (7). The side crossbeams (4) are located on both sides of the frame structure. The reinforcing crossbeams (6) and secondary crossbeams (7) are arranged parallel to each other and alternately between the side crossbeams (4). The bottom longitudinal beam (5) is bolted to the bottom of both ends of the reinforcing crossbeams (6) and secondary crossbeams (7). The bottom longitudinal beam (5) is parallel to the longitudinal beam (8). The longitudinal beam (8) is located above the column (1). The longitudinal beam (8) passes through the secondary crossbeams (7) and the reinforcing crossbeams (6). The side crossbeams (4) are connected to the ends of the longitudinal beams (8).

3. The large-span frame-type photovoltaic support for roofs according to claim 2, characterized in that: The side beam (4), the reinforcing beam (6), and the secondary beam (7) are all connected to the longitudinal beam (8) by an L-shaped connecting plate (9).

4. The large-span frame-type photovoltaic support for roofs according to claim 3, characterized in that: The side beam (4) is fixedly connected to a beam reinforcement plate (3). The beam reinforcement plate (3) has a C-shaped structure. The side beam (4) and the beam reinforcement plate (3) are fitted together. The beam reinforcement plate (3) is located above the column (1).

5. The large-span frame-type photovoltaic support for roofs according to claim 4, characterized in that: The secondary crossbeam (7), longitudinal beam (8) and bottom longitudinal beam (5) are all C-shaped steel. The side crossbeam (4) and reinforcing crossbeam (6) are both constructed by welding two C-shaped steels arranged opposite each other. The cross sections of the side crossbeam (4) and reinforcing crossbeam (6) are I-shaped.

6. The large-span frame-type photovoltaic support for roofs according to claim 1, characterized in that: The columns (1) are evenly distributed along the midline of the frame structure.

7. The large-span frame-type photovoltaic support for roofs according to claim 5, characterized in that: The columns (1) are arranged in rows, and the reinforcing beams (6) and secondary beams (7) on each column (1) are of equal length, and the side beams (4) are longer than the reinforcing beams (6).

8. The roof-mounted large-span frame-type photovoltaic support according to any one of claims 1-7, characterized in that: The photovoltaic support structure is made of high-strength weather-resistant steel.

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