Flexible space cable net structure photovoltaic support

Abstract

The utility model relates to the technical field of photovoltaic supports, in particular to a flexible space cable net structure photovoltaic support which comprises assembly cable bodies, auxiliary assembly cables, first bearing cables, second bearing cables, boundary beams and stay cables, the auxiliary assembly cables are transversely installed at the side ends of the assembly cable bodies, and the second bearing cables are connected to the outer sides of the assembly cable bodies in a crossed mode. First bearing cables are connected to the outer sides of the auxiliary assembly cables in a crossed mode, boundary beams are transversely installed at the two ends of the multiple sets of assembly cable bodies and the two ends of the auxiliary assembly cables, stay cables are obliquely installed on the outer sides of the boundary beams, the assembly cable bodies and the auxiliary assembly cables are used for transmitting the self weight, the photovoltaic panel weight, wind and snow loads and stress to the stay cables, and the stay cables transmit the force to a foundation. According to the utility model, the common bearing cable is additionally arranged between the two rows of assembly cable main bodies, so that the strength and the stability of each span are enhanced, the overall rigidity of the structure is improved, the load can be more effectively dispersed, and the local stress concentration is reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support technology, and in particular to a flexible spatial cable net structure photovoltaic support. Background Technology

[0002] With the rapid development of photovoltaic construction, the number of suitable sites for building flexible photovoltaic supports in my country is gradually decreasing. In particular, areas with relatively flat terrain, stable geological conditions, and excellent solar resources have been almost completely developed. Against this backdrop, the application of flexible photovoltaic supports is gradually extending to areas with more complex and harsh environments. In order to meet the ever-growing demand for clean energy, photovoltaic projects have to turn to some special geographical environments that are traditionally unsuitable for construction. This places higher demands on the structural performance of flexible photovoltaic supports. In actual projects, more and more projects need to cross wide ravines, rivers, valleys, pools, and even existing buildings and other obstacles. These scenarios not only place higher standards on the span of the support system, but also bring severe challenges to the stability, load-bearing capacity, and adaptability of the overall structure.

[0003] Meanwhile, the span of existing flexible support systems is mostly within 60 meters. The larger the span, the greater the stress on the cable structure within the span. Increasing the span requires increasing the cross-sectional area of ​​the cables to meet the strength requirements. Increasing the cross-sectional area of ​​the cables will lead to increased procurement costs and increased construction difficulty, which will also increase construction costs. If the cross-sectional area of ​​the cables is not increased, a transverse cable structure perpendicular to the component cables and load-bearing cables can be added to form a cable net structure. However, adding transverse cables requires adding corresponding pile foundations, which will increase procurement and construction costs. Alternatively, the strength within the span can be strengthened by adding a transverse truss structure without increasing the cross-sectional area of ​​the cables. However, since the truss structure is generally made of welded profiles, the truss has a large self-weight. While strengthening the strength within the span, it also increases the load on the cables within the span, so the strengthening effect is not obvious. Utility Model Content

[0004] To overcome the problems of insufficient structural stiffness and difficulty in deformation control that may occur when traditional supports face large spans, this utility model provides a flexible spatial cable net structure photovoltaic support.

[0005] The technical solution is as follows: A flexible spatial cable net structure photovoltaic support includes a main component cable, sub-component cables, a first load-bearing cable, a second load-bearing cable, side beams, and stay cables. Sub-component cables are installed laterally on the sides of multiple main component cable bodies. Second load-bearing cables are cross-connected to the outer sides of the main component cable bodies. First load-bearing cables are cross-connected to the outer sides of the sub-component cables. Side beams are installed laterally at both ends of the main component cable bodies and sub-component cables. Stay cables are installed obliquely on the outer sides of the side beams. The main component cable bodies and sub-component cables are used to transfer their own weight, the weight of the photovoltaic panels, and wind and snow loads to the stay cables. The stay cables then transfer the force to the foundation.

[0006] Furthermore, side columns are installed on the underside of the side beams, and intermediate columns are installed at the lower middle part of the main body of the multi-component cable.

[0007] Furthermore, a central beam is fixedly connected to the upper end of the central column, and the lower part of the central column is connected to the foundation.

[0008] Furthermore, the central column and the central beam are connected by U-bolts, and multiple sets of triangular frames are installed on the outer side of the component cable body from left to right.

[0009] Furthermore, the two adjacent sets of tripods are fixedly connected by the first truss, the second truss, the third truss, the fourth truss, and the fifth truss.

[0010] Furthermore, the third and fourth trusses are interconnected with the apex of the second load-bearing cable and the tripod.

[0011] Furthermore, the first truss and the second truss are connected to the first and second load-bearing cables, and the fifth truss is connected to the upper apex of the tripod.

[0012] Furthermore, the main component cable, sub-component cable, first load-bearing cable, and second load-bearing cable all pass through the intermediate beam and connect to the side beam.

[0013] The beneficial effects are as follows: This utility model achieves the addition of shared load-bearing cables between two rows. This method not only enhances the strength of a single span but also provides an effective force transmission path. In this design, the load-bearing cables are arranged laterally or obliquely between the main component cable and the sub-component cable, increasing the stiffness and stability of the structure. When subjected to external forces such as wind loads, snow loads, and the self-weight of photovoltaic panels, the load-bearing cables can effectively disperse and transfer these loads, preventing damage caused by local stress concentration. The truss design adopts a shared node approach, which means that adjacent truss structures can enhance their synergy by sharing certain connection points. Specifically, the third and fourth trusses are interconnected with the second load-bearing cable and the apex of the triangular frame, and the first and second trusses connect the first and second load-bearing cables. The fifth truss is connected to the upper apex of the triangular frame, forming a mutually supporting network. This design allows the reinforcing force borne by the load-bearing cables to be efficiently transmitted to adjacent parts through the shared nodes of the trusses. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a three-dimensional structure of a flexible spatial cable net photovoltaic support according to the present invention;

[0015] Figure 2 This is a front structural diagram of the present invention;

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 4 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 5 This is a three-dimensional structural diagram of the present invention.

[0019] In the attached diagram, the following are the reference numerals: 1. Main component cable; 2. Sub-component cable; 3. First load-bearing cable; 4. Second load-bearing cable; 5. Side column; 6. Side beam; 7. Middle column; 8. Middle beam; 9. Triangular frame; 10. First truss; 11. Second truss; 12. Third truss; 13. Fourth truss; 14. Fifth truss; 15. Stay cable. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Among the currently discovered feasible technologies, the following are described:

[0022] With the rapid development of photovoltaic (PV) construction, suitable sites for flexible PV systems in my country are gradually decreasing, especially in areas with relatively flat terrain, stable geological conditions, and abundant solar resources, which have been largely developed. This trend signifies that the PV industry has moved from a "resource optimization" stage to a new development stage of "boundary expansion." Against the backdrop of increasingly scarce land resources and saturation of high-quality PV land, the application of flexible PV systems is gradually extending to areas with more complex and harsh environments. To meet the growing demand for clean energy and promote the achievement of carbon peaking and carbon neutrality goals, PV projects are forced to shift towards special geographical environments that are traditionally unsuitable for construction. These areas include, but are not limited to: hilly and mountainous terrain with significant topographic relief; water areas spanning wide ravines or rivers; areas with unstable geological structures; extreme climate zones with high wind loads or snow loads; and even non-traditional PV application sites such as the rooftops of existing buildings, industrial plant pools, and landfills. These scenarios pose unprecedented challenges to the design, construction, operation, and maintenance of flexible PV system systems. In actual engineering projects, an increasing number of projects need to cross wide ravines, rivers, valleys, pools, and even existing buildings and other obstacles. In such cases, traditional rigid support structures are insufficient to meet engineering requirements due to limitations in span, difficulties in foundation construction, and high material costs. Flexible photovoltaic (PV) supports, with their excellent adaptability and scalability, have become a crucial technological solution. However, facing wider span requirements, the support system must not only bear its own weight and the load of the PV modules but also cope with greater wind loads, temperature stress changes, seismic effects, and potential vibrations. Therefore, these special application scenarios not only place higher demands on the span capacity of the support system but also pose significant challenges to the overall structural stability, load-bearing capacity, and environmental adaptability. For example, when crossing rivers or valleys, the support system must possess sufficient wind resistance and good durability to withstand long-term erosion from exposure to the natural environment. When crossing buildings or pools, the feasibility of foundation anchoring, the coordination between the structure and existing facilities, and the control of the impact on the surrounding environment must be considered. Furthermore, these complex scenarios often involve inconvenient transportation, poor construction conditions, and high maintenance difficulties, further increasing the design and construction complexity of flexible PV supports. While traditional flexible cable net structures possess a certain span capability to some extent, they gradually reveal problems such as insufficient structural stiffness, difficulty in deformation control, and low reliability of node connections when facing larger spans and more complex stress conditions, making it difficult to meet the needs of actual engineering projects.

[0023] Meanwhile, existing flexible photovoltaic support systems generally face the problem of limited single-span length in practical engineering applications. Currently, most mainstream flexible support structures control the single-span distance to within 60 meters. Beyond this range, the stress condition of the cable structure within the span deteriorates significantly. As the span increases, the tensile force and deflection borne by the component cables and load-bearing cables rise rapidly, leading to stress concentration and intensified deformation within the cable body, thus affecting the safety and stability of the overall structure. To meet the strength and stiffness requirements for larger spans, the traditional approach is to increase the cross-sectional area of ​​the cable material to improve its load-bearing capacity. However, while this method can effectively enhance the tensile performance of the cable body, it also brings significant negative effects: increasing the cable diameter means a substantial increase in material procurement costs, especially since high-strength steel cables or stainless steel cables are expensive, further driving up the overall project cost. Furthermore, the increased weight of large-section cables places higher demands on construction equipment, installation techniques, and on-site operations, leading to increased construction difficulty, extended construction period, and higher labor and machinery costs, thus further compressing the project's economic feasibility. Another approach is to not increase the main cable cross-sectional area but instead add transverse cable structures to form a more stable cable net system. This scheme utilizes the interlacing arrangement of transverse and longitudinal cables to construct a spatial cable net structure, improving overall stiffness and stress distribution. However, the introduction of transverse cables requires additional support points and anchoring foundations, i.e., new pile foundations or column structures. This also leads to an increase in foundation work, more complex civil construction, and a longer construction period, ultimately increasing the total project cost. Another method is to use transverse truss structures to strengthen the span. This method involves adding truss members welded from steel sections between the cable structures to improve local stiffness and the overall structural bending resistance. However, these truss structures typically have a large self-weight. While failing to significantly improve the structural stress state, they actually add extra load to the original cable system, creating an unfavorable situation of "increased burden before reinforcement." Furthermore, since trusses are mostly on-site welded structures, they not only have long construction cycles and high process requirements, but also suffer from difficulties in controlling the quality of connection nodes, resulting in limited reinforcement effects and low overall cost-effectiveness. In summary, current flexible photovoltaic support systems face multiple challenges in their development towards larger spans, including complex structural stresses, high material costs, significantly increased construction difficulty, and low efficiency of reinforcement methods. Traditional solutions often introduce new technical and economic problems while improving structural performance. Therefore, a new flexible support structure system that can achieve large spans, effectively control costs, and ensure ease of construction is needed to adapt to the future development trend of photovoltaic projects expanding into complex terrains and special environments.

[0024] like Figures 1-5As shown, a flexible spatial cable net structure photovoltaic support includes a main component cable 1, sub-component cables 2, a first load-bearing cable 3, a second load-bearing cable 4, side beams 6, and stay cables 15. Sub-component cables 2 are installed laterally on the sides of multiple sets of main component cable 1. Second load-bearing cables 4 are cross-connected to the outside of the main component cable 1, and first load-bearing cables 3 are cross-connected to the outside of the sub-component cables 2. Side beams 6 are installed laterally at both ends of multiple sets of main component cable 1 and sub-component cables 2. Stay cables 15 are installed obliquely on the outside of the side beams 6. The main component cable 1 and sub-component cables 2 are used to transfer their own weight, the weight of the photovoltaic panel, and wind and snow loads to the stay cables 15, and the stay cables 15 transfer the force to the foundation.

[0025] Side columns 5 are installed on the lower side of the side beam 6, and intermediate columns 7 are installed at the lower middle part of the multi-component cable body 1 to provide lateral and central support, enhance the overall structural stability and load-bearing capacity. The upper part of the intermediate column 7 is fixedly connected to the intermediate beam 8, and the lower part of the intermediate column 7 is connected to the foundation to construct a vertical force transmission path, effectively sharing the cable net load and transferring it to the foundation.

[0026] The main component cable 1 and the secondary component cable 2, as the main structural elements supporting the photovoltaic panel, not only bear their own weight but also the weight of the photovoltaic panel and potential wind and snow loads. Through horizontal installation, the main component cable 1 and the secondary component cable 2 form a basic frame structure for initial force distribution and transmission. Load-bearing cables are respectively cross-connected to the outside of the main component cable 1 and the secondary component cable 2, forming a reinforcing structure. These enhance the overall structural rigidity, help disperse the load transmitted from the main component cable 1 and the secondary component cable 2, avoid local stress concentration, and further transmit these forces to the side beam 6 and the stay cable 15. The side beam 6 is installed on the main component cable... The cable 15, which provides lateral stability support at both ends of the sub-component cable 2 and acts as a force transmission medium, extends obliquely outward from the side beam 6, guiding the force received by the side beam 6 to the foundation. The cable 15 plays a key role in this process. It is not only responsible for ultimately transferring the load of the entire structure to the ground or building foundation, but also provides the necessary vertical support for the system through its tension characteristics. The side column 5 is located on the lower side of the side beam 6, providing additional vertical support for the side beam 6 and enhancing edge stability. The middle column 7 is installed below the middle of the main body of the multi-component cable 1, and provides central support for the cable net structure through the middle beam 8 fixed at the upper end, preventing sagging in the central area.

[0027] Please see Figures 3-4The intermediate column 7 and the intermediate beam 8 are connected by U-bolts. Multiple sets of triangular frames 9 are installed sequentially from left to right on the outer side of the main cable component 1, enabling rapid installation and flexible adjustment, improving construction efficiency and structural adaptability. Adjacent sets of triangular frames 9 are fixedly connected by the first truss 10, the second truss 11, the third truss 12, the fourth truss 13, and the fifth truss 14, enhancing local stiffness and overall synergistic load-bearing capacity, improving wind resistance and deformation resistance. The third truss 12 and the fourth truss 13 are connected to the second load-bearing cable 4 and the triangular frames. The vertices of 9 are interconnected, optimizing the distribution of stress nodes and strengthening the linkage between the load-bearing cables and the structural skeleton. The first truss 10 and the second truss 11 connect the first load-bearing cable 3 and the second load-bearing cable 4. The fifth truss 14 is connected to the upper vertex of the triangular frame 9, forming a spatial truss system, which improves the overall structure and the load-bearing capacity. The main component cable 1, the sub-component cable 2, the first load-bearing cable 3 and the second load-bearing cable 4 all pass through the middle beam 8 and the side beam 6 to achieve continuous cable connection, enhance the overall structure and avoid stress concentration.

[0028] The intermediate column 7 and intermediate beam 8 are connected by U-bolts, allowing for quick installation and flexible adjustment. This simplifies construction and facilitates later maintenance and adjustments. This flexibility not only improves construction efficiency but also enhances the structure's adaptability to different terrains and environmental conditions. The design of the tripod 9 provides additional support points for the main cable component 1, increasing local stiffness and helping to distribute the forces applied to the cable component. The first to fifth trusses connect adjacent tripods 9, forming a tightly connected spatial truss system. This design significantly enhances local stiffness. This design promotes overall synergistic stress distribution, significantly improving the system's wind resistance and deformation resistance. In particular, the connection between the third truss 12, the fourth truss 13, the second load-bearing cable 4, and the apex of the triangular frame 9 optimizes the distribution of stress nodes, strengthens the linkage between the load-bearing cable and the structural skeleton, and ensures that the load can be transferred more evenly. The first truss 10 and the second truss 11 connect the first load-bearing cable 3 and the second load-bearing cable 4, and the fifth truss 14 connects to the upper apex of the triangular frame 9. This connection method constructs a complex but orderly spatial truss network, which not only enhances the integrity of the structure but also ensures that the load can be evenly distributed along the optimal path.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible spatial cable net structure photovoltaic support, characterized in that, It includes a main component cable (1); it also includes a secondary component cable (2), a first load-bearing cable (3), a second load-bearing cable (4), a side beam (6), and a stay cable (15). The secondary component cable (2) is installed laterally on the side end of the main component cable (1). The second load-bearing cable (4) is cross-connected on the outside of the main component cable (1). The first load-bearing cable (3) is cross-connected on the outside of the secondary component cable (2). The side beam (6) is installed laterally at both ends of the main component cable (1) and the secondary component cable (2). The stay cable (15) is installed obliquely on the outside of the side beam (6). The main component cable (1) and the secondary component cable (2) are used to transfer their own weight, the weight of the photovoltaic panel, and the wind and snow load to the stay cable (15). The stay cable (15) transfers the force to the foundation.

2. The flexible spatial cable net structure photovoltaic support according to claim 1, characterized in that, Side columns (5) are installed on the lower side of the side beam (6), and middle columns (7) are installed at the lower middle part of the multi-component cable body (1).

3. A flexible spatial cable net structure photovoltaic support according to claim 2, characterized in that, The upper end of the middle column (7) is fixedly connected to the middle beam (8), and the lower part of the middle column (7) is connected to the foundation.

4. A flexible spatial cable net structure photovoltaic support according to claim 2, characterized in that, The middle column (7) and the middle beam (8) are connected by U-bolts, and multiple sets of tripods (9) are installed on the outside of the main body (1) of the component cable from left to right.

5. A flexible spatial cable net structure photovoltaic support according to claim 4, characterized in that, The two adjacent sets of tripods (9) are fixedly connected to the fifth truss (14) through the first truss (10), the second truss (11), the third truss (12), the fourth truss (13).

6. A flexible spatial cable net structure photovoltaic support according to claim 5, characterized in that, The third truss (12), the fourth truss (13) are connected to the apex of the second load-bearing cable (4) and the tripod (9).

7. A flexible spatial cable net structure photovoltaic support according to claim 5, characterized in that, The first truss (10) and the second truss (11) are connected to the first load-bearing cable (3) and the second load-bearing cable (4), and the fifth truss (14) is connected to the upper apex of the tripod (9).

8. A flexible spatial cable net structure photovoltaic support according to claim 1, characterized in that, The main component cable (1), the sub-component cable (2), the first load-bearing cable (3) and the second load-bearing cable (4) all pass through the middle beam (8) and connect to the side beam (6).

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