Wind-vibration-resistant prestressed photovoltaic support
By introducing oblique rods and cable structures into the photovoltaic brackets, the stiffness and stability of the brackets are increased, and the vibration problem of traditional single-column photovoltaic brackets under strong winds is solved, achieving higher wind resistance and structural stability.
Patent Information
- Application Number
- CN202422355862.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Traditional single-column photovoltaic brackets have low stiffness and large wind vibration coefficient, which leads to large steel consumption, which cannot meet the stability and safety requirements of photovoltaic brackets under strong wind conditions.
A wind-resistant prestressed photovoltaic bracket is designed to provide additional support by providing slant rods and cables on the column, increasing the stiffness and stability of the bracket, and using flexible connectors to absorb and dissipate vibration energy, reducing the structural vibration amplitude and frequency.
It significantly improves the stiffness and stability of the photovoltaic stent, reduces the impact of wind load on the stent, improves the overall wind resistance of the photovoltaic system, and reduces the structural vibration response.
Smart Images
Figure CN223141826U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic technology, in particular to an anti-wind-vibration prestressed photovoltaic support. Background Technique
[0002] With the continuous increase in the global demand for clean energy, as one of the important renewable energy sources, the market scale of photovoltaic power generation continues to expand. As an important part of the photovoltaic power generation system, the demand for photovoltaic supports also increases accordingly. The stability and safety of the photovoltaic support are directly related to the overall performance of the photovoltaic power generation system. Under harsh weather conditions such as strong winds, the photovoltaic support needs to be able to withstand large loads and maintain stability. On the premise of ensuring the stability and safety of the photovoltaic support, it is also necessary to consider its economy and environmental protection. By optimizing the design and production process, the production cost and raw material consumption are reduced, and the cost performance and environmental protection performance of the photovoltaic support are improved.
[0003] The single-column photovoltaic support has a compact structure, small floor area, simple structure, relatively low manufacturing cost, and is relatively convenient for installation and maintenance. Therefore, it has been widely used in areas with tight land resources and is favored by the market. Some provincial and municipal government regulatory departments have issued documents clearly requiring that the column spacing and pile spacing of photovoltaic modules can only use single-column supports. However, the traditional single-column has low stiffness and a large wind vibration coefficient (the gust coefficient of the maintenance structure is 1.4 - 1.7, and the general specification should not be less than 1.2). Due to the influence of wind vibration, the wind load of the support will increase significantly, resulting in a large consumption of steel. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide an anti-wind-vibration prestressed photovoltaic support, which increases the stiffness and stability of the photovoltaic support, thereby reducing the influence of wind vibration on the support.
[0005] The technical solution adopted by the utility model to solve its technical problem is an anti-wind-vibration prestressed photovoltaic support, which includes a plurality of columns arranged at intervals. An inclined beam is obliquely arranged above each column. The plurality of inclined beams are connected by a plurality of purlins, and a photovoltaic module is arranged above the purlins; a circular hoop is arranged on each column, and a first inclined rod and a second inclined rod located on both sides of the column are arranged on the circular hoop. The end of the first inclined rod away from the column is connected to the first end of the inclined beam, and the end of the second inclined rod away from the column is connected to the second end of the inclined beam; a first angle steel and a second angle steel are arranged below the circular hoop. The first angle steel and the first inclined rod are on the same side of the column, and the second angle steel and the second inclined rod are on the same side of the column; the first angle steel is connected to the first end of the inclined beam through a first cable, and the second angle steel is connected to the second end of the inclined beam through a second cable.
[0006] Furthermore, connection pieces are provided at both ends of the first cable and the second cable. The connection pieces at both ends of the first cable are respectively bolted to the first end of the inclined beam and the first angle steel; the connection pieces at both ends of the second cable are respectively bolted to the second end of the inclined beam and the second angle steel.
[0007] Furthermore, a plurality of first threaded holes are provided at the first end of the inclined beam and arranged at intervals along the length direction of the inclined beam, and a plurality of second threaded holes are provided at the second end of the inclined beam and arranged at intervals along the length direction of the inclined beam.
[0008] Furthermore, both the first angle steel and the second angle steel are connected to the column through connection bolts.
[0009] Furthermore, the connection bolts are galvanized bolts.
[0010] Furthermore, flat head pieces are provided at both ends of the first diagonal rod and the second diagonal rod. The flat head pieces at both ends of the first diagonal rod are respectively bolted to the first end of the inclined beam and the ring clamp; the flat head pieces at both ends of the second diagonal rod are respectively bolted to the second end of the inclined beam and the ring clamp.
[0011] Furthermore, a reinforcing gasket is provided between the flat head piece and the inclined beam.
[0012] Furthermore, adjacent two purlins are connected by a strut, and the strut is parallel to the inclined beam.
[0013] The beneficial effects of the present utility model are as follows: By providing the first diagonal rod and the second diagonal rod, and arranging the first cable on the same side of the first diagonal rod and the second cable on the same side of the second diagonal rod, the first cable and the second cable provide prestress. The first cable and the second cable, as flexible connectors, can provide additional supporting force in the bracket system to significantly increase the stiffness and stability of the bracket. When an external force acts on the photovoltaic bracket, the cable undergoes a small elastic deformation, absorbs and dissipates part of the vibration energy, reduces the vibration amplitude and frequency of the structure, improves the damping performance of the structure, reduces the vibration response under the action of wind load, can effectively disperse and resist the influence of wind load on the bracket, and improves the overall wind resistance of the photovoltaic system. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of the present utility model;
[0015] Figure 2 is Figure 1 the top view of
[0016] Figure 3 is Figure 1 the enlarged view at A in
[0017] Figure 4 is Figure 1 the enlarged view at B in
[0018] Figure 5 is Figure 1 An enlarged view of location C in [the figure].
[0019] Reference numerals in the drawings: 1 - vertical column; 2 - inclined beam; 3 - purlin; 4 - photovoltaic module; 5 - annular hoop; 6 - first diagonal bar; 7 - second diagonal bar; 8 - first angle steel; 9 - second angle steel; 10 - first cable; 11 - second cable; 12 - connecting piece; 13 - first threaded hole; 14 - second threaded hole; 15 - flat head piece; 16 - reinforcing gasket; 17 - strut. Specific implementation manners
[0020] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.
[0021] As Figures 1-5 shown, a wind - vibration - resistant prestressed photovoltaic support of the present utility model includes a plurality of vertically - spaced vertical columns 1. An inclined beam 2 is inclinedly arranged above each of the vertical columns 1. The plurality of inclined beams 2 are connected by a plurality of purlins 3. A photovoltaic module 4 is arranged above the purlins 3. An annular hoop 5 is arranged on each of the vertical columns 1. A first diagonal bar 6 and a second diagonal bar 7 located on both sides of the vertical column 1 are arranged on the annular hoop 5. The end of the first diagonal bar 6 away from the vertical column 1 is connected to the first end of the inclined beam 2, and the end of the second diagonal bar 7 away from the vertical column 1 is connected to the second end of the inclined beam 2. A first angle steel 8 and a second angle steel 9 are arranged below the annular hoop 5. The first angle steel 8 and the first diagonal bar 6 are on the same side of the vertical column 1, and the second angle steel 9 and the second diagonal bar 7 are on the same side of the vertical column 1. The first angle steel 8 is connected to the first end of the inclined beam 2 through a first cable 10, and the second angle steel 9 is connected to the second end of the inclined beam 2 through a second cable 11.
[0022] Among them, the column 1 is made of steel and is set on the ground foundation. The inclined beam 2 is set on the top of the column 1 through a triangular member. An angle is formed between the inclined beam 2 and the horizontal plane. After installing the photovoltaic module 4, it is convenient for the photovoltaic module 4 to receive sunlight. The purlin 3 is a C-shaped steel and is connected to the inclined beam 2 by bolts. Multiple purlins 3 are arranged at intervals along the length direction of the inclined beam 2 and are perpendicular to the inclined beam 2. The photovoltaic module 4 is connected to the purlin 3 by bolts. The connection mode of the annular hoop 5 and the column 1 can adopt bolts or welding. The first diagonal rod 6 and the second diagonal rod 7 are located on both sides of the column 1. It should be noted here that the first diagonal rod 6, the second diagonal rod 7 and the inclined beam 2 are located in the same installation plane to prevent the triangular structure formed by the first diagonal rod 6, the inclined beam 2 and the column 1 from being distorted and prevent the triangular structure formed by the second diagonal rod 7, the inclined beam 2 and the column 1 from being distorted. The first end of the inclined beam 2 is the end closer to the ground foundation, and the second end of the inclined beam 2 is the end farther from the ground foundation. The inclination angles of the first diagonal rod 6 and the second diagonal rod 7 are different. The first angle steel 8 and the second angle steel 9 can be welded to the column 1. For the convenience of disassembly, both the first angle steel 8 and the second angle steel 9 are connected to the column 1 through connecting bolts. Since the use scenario is outdoors, in order to ensure the corrosion resistance of the connecting bolts, the connecting bolts are galvanized bolts. The connection point of the first cable 10 and the first end of the inclined beam 2 is closer to the end of the first end relative to the connection point of the first diagonal rod 6 and the first end of the inclined beam 2; the connection point of the second cable 11 and the second end of the inclined beam 2 is closer to the end of the second end relative to the connection point of the second diagonal rod 7 and the second end of the inclined beam 2; the first cable 10 and the second cable 11 provide prestress. The first cable 10 and the second cable 11 are used as flexible connectors and can provide additional support force in the support system to significantly increase the stiffness and stability of the support. When an external force acts on the photovoltaic support, the cable undergoes a small elastic deformation, absorbs and dissipates part of the vibration energy, and reduces the vibration amplitude and frequency of the structure.
[0023] For the convenience of disassembly and installation, further, refer to Figure 3 and Figure 4 , both ends of the first cable 10 and the second cable 11 are provided with connection plates 12. The connection plates 12 at both ends of the first cable 10 are respectively bolt-connected to the first end of the inclined beam 2 and the first angle steel 8; the connection plates 12 at both ends of the second cable 11 are respectively bolt-connected to the second end of the inclined beam 2 and the second angle steel 9. The connection plate 12 is made of steel and can be connected to the first cable 10 and the second cable 11 by welding. Threaded holes are provided on the first end, the second end, the first angle steel 8 and the second angle steel 9 of the inclined beam 2. By using bolts to pass through the threaded holes, the connection plates 12 at both ends of the first cable 10 can be respectively bolt-connected to the first end of the inclined beam 2 and the first angle steel 8; the connection plates 12 at both ends of the second cable 11 can be respectively bolt-connected to the second end of the inclined beam 2 and the second angle steel 9
[0024] To facilitate the fine adjustment of the tilt angle of the photovoltaic module 4 and to facilitate the change of the prestress of the first cable 10 and the second cable 11, further, refer to Figure 3 and Figure 4 , a plurality of first threaded holes 13 are arranged at the first end of the inclined beam 2 at intervals along the length direction of the inclined beam 2, and a plurality of second threaded holes 14 are arranged at the second end of the inclined beam 2 at intervals along the length direction of the inclined beam 2. Since the lengths of the first cable 10 and the second cable 11 remain unchanged, by changing the connection position of the first cable 10 and the first end of the inclined beam 2, the prestress provided by the first cable 10 can be changed, and at the same time, the inclined beam 2 can be slightly tilted to change the tilt angle of the photovoltaic module 4.
[0025] To facilitate the connection of the first diagonal rod 6 and the second diagonal rod 7 to the inclined beam 2, further, refer to Figure 3 and Figure 4 , flat head pieces 15 are arranged at both ends of the first diagonal rod 6 and the second diagonal rod 7. The flat head pieces 15 at both ends of the first diagonal rod 6 are respectively bolted to the first end of the inclined beam 2 and the ring-shaped hoop 5; the flat head pieces 15 at both ends of the second diagonal rod 7 are respectively bolted to the second end of the inclined beam 2 and the ring-shaped hoop 5. Among them, the first diagonal rod 6 can be made of a steel pipe. The two ends of the steel pipe can be flattened to form the flat head pieces 15. Threaded holes or through holes are made on the flat head pieces 15, and threaded holes or through holes are made at the corresponding positions of the inclined beam 2. The bolted connection between the flat head pieces 15 and the inclined beam 2 can be realized through the cooperation of bolts and nuts.
[0026] To enhance the stability of the connection between the flat head piece 15 and the inclined beam 2, further, refer to Figure 3 and Figure 4 , a reinforcing gasket 16 is arranged between the flat head piece 15 and the inclined beam 2.
[0027] To ensure the stability of the purlin 3, further, refer to Figure 1 and Figure 2 , two adjacent purlins 3 are connected by a strut 17, and the strut 17 is parallel to the inclined beam 2. The strut 17 can be connected to the purlin 3 by welding or bolt connection.
[0028] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore: All equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.
Claims
1. An anti-wind-vibration prestressed photovoltaic support, comprising a plurality of columns (1) arranged at intervals, an inclined beam (2) is obliquely arranged above each column (1), a plurality of the inclined beams (2) are connected by a plurality of purlins (3), and a photovoltaic module (4) is arranged above the purlins (3); characterized in that: An annular hoop (5) is provided on each of the upright columns (1). A first diagonal rod (6) and a second diagonal rod (7) are provided on the annular hoop (5) and are located on both sides of the upright column (1). The end of the first diagonal rod (6) far away from the upright column (1) is connected to the first end of the inclined beam (2), and the end of the second diagonal rod (7) far away from the upright column (1) is connected to the second end of the inclined beam (2); a first angle steel (8) and a second angle steel (9) are provided below the annular hoop (5). The first angle steel (8) and the first diagonal rod (6) are on the same side of the upright column (1), and the second angle steel (9) and the second diagonal rod (7) are on the same side of the upright column (1); the first angle steel (8) is connected to the first end of the inclined beam (2) through a first cable (10), and the second angle steel (9) is connected to the second end of the inclined beam (2) through a second cable (11).
2. The wind vibration-resistant prestressed photovoltaic support according to claim 1, characterized in that: Connection pieces (12) are provided at both ends of the first cable (10) and the second cable (11). The connection pieces (12) at both ends of the first cable (10) are respectively bolted to the first end of the inclined beam (2) and the first angle steel (8); the connection pieces (12) at both ends of the second cable (11) are respectively bolted to the second end of the inclined beam (2) and the second angle steel (9).
3. The wind-resistant prestressed photovoltaic support according to claim 2, wherein: A plurality of first threaded holes (13) arranged at intervals along the length direction of the inclined beam (2) are provided at the first end of the inclined beam (2), and a plurality of second threaded holes (14) arranged at intervals along the length direction of the inclined beam (2) are provided at the second end of the inclined beam (2).
4. The wind-resistant vibration-preventing prestressed photovoltaic support according to claim 2, wherein: Both the first angle steel (8) and the second angle steel (9) are connected to the upright column (1) through connecting bolts.
5. The wind-resistant vibration-preventing prestressed photovoltaic support according to claim 4, wherein: The connecting bolts are galvanized bolts.
6. The wind-resistant vibration-preventing prestressed photovoltaic support according to claim 1, characterized in that: Flat head pieces (15) are provided at both ends of the first diagonal rod (6) and the second diagonal rod (7). The flat head pieces (15) at both ends of the first diagonal rod (6) are respectively bolted to the first end of the inclined beam (2) and the annular hoop (5); the flat head pieces (15) at both ends of the second diagonal rod (7) are respectively bolted to the second end of the inclined beam (2) and the annular hoop (5).
7. The wind-resistant and vibration-resistant prestressed photovoltaic support according to claim 6, wherein: Reinforcing gaskets (16) are provided between the flat head pieces (15) and the inclined beam (2).
8. The wind-resistant vibration-preventing prestressed photovoltaic support according to claim 1, wherein: Adjacent purlins (3) are connected by a strut (17), and the strut (17) is parallel to the inclined beam (2).