Single-column cable-supported photovoltaic support system

Abstract

The invention relates to the technical field of photovoltaics, in particular to a single-column type cable-supported photovoltaic support system which comprises multiple rows of supporting structures and stabilizing structures, each supporting structure comprises stand columns, an upper chord cable, a lower chord cable, a triangular rigid support, an inclined supporting rod and a photovoltaic assembly, the upper chord cable and the lower chord cable are tensioned between the two stand columns, and the triangular rigid supports are connected with the inclined supporting rod. The stand columns, the upper chord cable and the lower chord cable are located in the same plane, the triangular rigid supports are installed between the upper chord cable and the lower chord cable and arranged at equal intervals in the first direction, and the inclined supporting rods are arranged on the adjacent triangular rigid supports. The bearing capacity and stability of the upper and lower chord cables are improved by applying prestress to the upper and lower chord cables, the triangular rigid supports and the wind-resistant cables work cooperatively, the stability of the photovoltaic module and the overall structure under the wind load effect is improved, the upper and lower chord cables are directly connected with the stand columns, the number of the stand columns is reduced, and construction convenience is improved; and the adaptability of the cable-supported photovoltaic bracket to complex terrains is improved.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a single-column cable-supported photovoltaic support system. Background Art

[0002] With the rapid development of new energy technologies, photovoltaic power generation systems have been widely used in various scenarios due to their clean and sustainable characteristics. In complex terrains, such as mountains, ponds, sewage treatment plants and other scenarios with large span requirements, but due to their high flexibility, they are more sensitive to wind loads, which can easily cause component damage or overall structural instability, seriously affecting the power generation efficiency of the photovoltaic system. For this reason, flexible photovoltaic support structures have gradually attracted attention. They achieve large-span layout through cables and lightweight materials, can better adapt to irregular terrain, and reduce the difficulty of foundation construction.

[0003] Due to the flexible characteristics of the flexible photovoltaic support structure, the structure is prone to large vibrations or deformations under wind loads, resulting in reduced stability of the photovoltaic modules and even damage to the modules or overall structural instability. This problem is particularly prominent in areas with frequent strong winds, which not only affects power generation efficiency but may also increase maintenance costs. In addition, the flexible structure has low torsional stiffness and is difficult to effectively suppress wind-induced torsional deformation, further exacerbating the instability of the photovoltaic modules and shortening their service life.

[0004] Therefore, in order to solve the above problems, the present invention proposes a single-column cable-supported photovoltaic bracket system. The present invention uses a rigid bracket for support and bears the weight through cables, which fully utilizes the performance advantages of each component and increases the stability of the photovoltaic module. Summary of the Invention

[0005] In order to overcome the obvious deficiencies of existing flexible photovoltaic support structures in practical applications, the present invention proposes a single-column cable-supported photovoltaic support system.

[0006] The technical solution of the present invention is: a single-column cable-supported photovoltaic support system, including multiple rows of support structures and stabilizing structures: the support structure includes a column, an upper chord, a lower chord, a triangular rigid support, a diagonal support rod and a photovoltaic module, the upper chord and the lower chord are tensioned between two columns, the column and the upper chord and the lower chord are in the same plane, the multiple triangular rigid supports are installed between the upper chord and the lower chord, and are arranged at equal intervals along a first direction, adjacent triangular rigid supports are provided with diagonal support rods, and the multiple photovoltaic modules are installed on the triangular rigid supports along the first direction.

[0007] Preferably, the stabilizing structure includes a diagonal cable and a stabilizing cable, one end of the diagonal cable is connected to the upper part of the column, and the other end is anchored to the ground. It is arranged along the first direction and arranged along the first direction and the second direction at the first and last rows of support structures. The stabilizing cable is cross-arranged and horizontally arranged at adjacent rows of columns.

[0008] Preferably, the stabilizing structure further includes wind-resistant cables and inter-row struts, wherein the plurality of wind-resistant cables are arranged at equal intervals along a first direction in the first and last rows of support structures, one end of which is connected to a triangular rigid support and the other end is anchored to the ground, and the plurality of inter-row struts are connected to adjacent rows of triangular rigid supports along a second direction.

[0009] Preferably, the triangular rigid support includes a crossbeam and a web, and the crossbeam and the web are welded to form a triangular stable structure. The angle between the webs is determined by the inclination angle of the photovoltaic module and the spacing between the upper chord and the lower chord. The photovoltaic module is fixed to the crossbeam by bolting the ear plates.

[0010] Preferably, the triangular rigid support further includes an upper node one, an upper node two, a first lower node and a second lower node, the crossbeam is locked and fixed to the upper chord through the upper node one or the upper node two, and the web is locked and fixed to the lower chord through the first lower node or the second lower node.

[0011] Preferably, the crossbeam includes bolts and ear plates, threaded holes are provided on both sides of the upper end of the crossbeam, the bolts are symmetrically threadedly connected to both sides of the upper end of the crossbeam, and the ear plates are threadedly connected to the crossbeam through the bolts.

[0012] Preferably, the upper node includes a crossbeam pad, a fixing bolt and a lower cover plate with an ear plate. The crossbeam pad is placed at the lower end of the middle part of the beam and welded thereto to form an integral whole. The lower end of the crossbeam pad is fixedly connected to the upper end of the lower cover plate with an ear plate. The upper node, the crossbeam pad and the lower cover plate with an ear plate have two threaded holes extending through them. The fixing bolt is threadedly connected to the upper node through the threaded hole. The crossbeam pad and the lower cover plate with an ear plate are provided with a hole groove. The upper chord passes through the hole groove between the crossbeam pad and the lower cover plate with an ear plate and is locked and fixed with a fixing bolt. The diagonal brace is fixedly connected to the lower cover plate with an ear plate.

[0013] Preferably, the upper node two includes a crossbeam pad two, a fixing bolt two and a lower cover plate one. The crossbeam pad two is placed at the lower end of the middle part of the beam and welded thereto to form an integral whole. The lower end of the crossbeam pad two and the upper end of the lower cover plate one are fixedly connected. The upper node two, the crossbeam pad two and the lower cover plate one are jointly provided with two threaded holes. The fixing bolt two is threadedly connected to the upper node two through the threaded holes. The crossbeam pad two and the lower cover plate one are jointly provided with a hole groove. The upper chord is passed through the hole groove between the crossbeam pad two and the lower cover plate one and is locked and fixed using the fixing bolt two.

[0014] Preferably, the first lower node includes an upper cover plate, three fixing bolts and two lower cover plates with ear plates. The upper cover plate and the two lower cover plates with ear plates are symmetrically provided with four threaded holes. The upper cover plate and the two lower cover plates with ear plates are fixedly connected by four three fixing bolts. The webs meet at the upper end of the upper cover plate and are welded thereto to form a whole. The upper cover plate and the two lower cover plates with ear plates are jointly provided with a hole groove. The lower chord passes through the hole groove between the upper cover plate and the two lower cover plates with ear plates and is locked and fixed by three fixing bolts. The wind-resistant rope and the inter-row support rods are connected and fixed to the two lower cover plates with ear plates.

[0015] Preferably, the second lower node includes an upper cover plate with an ear plate, four fixing bolts and two lower cover plates. The upper cover plate with the ear plate and the two lower cover plates are symmetrically provided with four threaded holes. The upper cover plate with the ear plate and the two lower cover plates are fixedly connected by four fixing bolts. The web intersects with the upper cover plate with the ear plate and is welded thereto to form a whole. One end of the diagonal brace is connected and fixed to the upper cover plate with the ear plate. The upper cover plate with the ear plate and the two lower cover plates are jointly provided with a hole groove. The lower chord passes through the hole groove between the upper cover plate with the ear plate and the two lower cover plates and is locked and fixed with four fixing bolts.

[0016] Beneficial effects of the present invention:

[0017] The present invention abandons the traditional flexible photovoltaic bracket that uses cables to directly support the photovoltaic components, and uses rigid brackets for support, and bears the weight through the cables, fully leveraging the performance advantages of each component, increasing the stability of the photovoltaic components, rationally arranging the spatial positions of the cables and rigid brackets, reducing the setting of end columns, and improving the adaptability to complex terrain; and realizing direct connection between the cables and columns, reducing the end anchoring measures, and further improving the wind resistance of the photovoltaic system by setting inter-row stabilizing cables and wind-resistant cables. The system can greatly improve the spanning capacity and wind resistance of the structure, improve the three-dimensional space utilization rate of the site, and be more adaptable to the integrated development of photovoltaics and other industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 Shown is a schematic diagram of the top view of the structure of the present invention;

[0020] Figure 3 Shown is a schematic diagram of the front view structure of the present invention;

[0021] Figure 4 Shown is a schematic diagram of the photovoltaic module structure of the present invention;

[0022] Figure 5 Shown is a schematic diagram of the triangular rigid bracket structure of the present invention;

[0023] Figure 6Shown is a schematic diagram of the inter-row bracing structure of the present invention;

[0024] Figure 7 Shown is a schematic diagram of the structure of the upper node of the present invention;

[0025] Figure 8 What is shown is a schematic diagram of the upper node two structure of the present invention.

[0026] Explanation of the reference numerals: 1. column; 2. upper chord; 3. lower chord; 4. triangular rigid bracket; 41. crossbeam; 411. bolt; 412. ear plate; 42. web member; 43. upper node one; 431. crossbeam pad one; 432. fixing bolt one; 433. lower cover plate one with ear plate; 44. upper node two; 441. crossbeam pad two; 442. fixing bolt two; 443. lower cover plate one; 45. first lower node; 451. upper cover plate; 452. fixing bolt three; 453. lower cover plate two with ear plate; 46. second lower node; 461. upper cover plate with ear plate; 462. fixing bolt four; 463. lower cover plate two; 5. diagonal brace; 6. photovoltaic module; 7. inclined cable; 8. stabilizing cable; 9. wind-resistant cable; 10. inter-row brace. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0028] See also Figures 1-8 The present invention provides an embodiment: a single-column cable-supported photovoltaic support system, including multiple rows of support structures and stabilizing structures: the support structure includes a column 1, an upper chord 2, a lower chord 3, a triangular rigid support 4, a diagonal brace 5 and a photovoltaic module 6, the upper chord 2 and the lower chord 3 are stretched between two columns 1, the column 1 and the upper chord 2 and the lower chord 3 are in the same plane, the multiple triangular rigid supports 4 are installed between the upper chord 2 and the lower chord 3, and are arranged at equal intervals along a first direction, adjacent triangular rigid supports 4 are provided with diagonal braces 5, and the multiple photovoltaic modules 6 are installed on the triangular rigid supports 4 along the first direction.

[0029] Furthermore, during installation, two columns 1 are first erected at a designed spacing, and the upper chord 2 and the lower chord 3 are tensioned between the two columns 1 to ensure that the column 1 and the upper chord 2 and the lower chord 3 are in the same plane. Then, multiple triangular rigid supports 4 are installed between the upper chord 2 and the lower chord 3 at equal intervals along the first direction, and diagonal braces 5 are set between adjacent triangular rigid supports 4. Finally, the photovoltaic module 6 is installed on the triangular rigid supports 4 along the first direction. After installation, the system enhances the overall bearing capacity through the prestressed effect of the upper chord 2 and the lower chord 3. The triangular rigid supports 4 and the diagonal braces 5 form a stable truss structure, thereby effectively suppressing the deformation caused by wind loads. The photovoltaic module 6 is firmly fixed on the rigid support to ensure power generation efficiency. At the same time, the single-column design is combined with the cable support structure to reduce the number of columns and improve the adaptability to complex terrain and construction convenience.

[0030] The stabilizing structure includes a stay cable 7 and a stabilizing cable 8. One end of the stay cable 7 is connected to the upper part of the column 1, and the other end is anchored to the ground. It is arranged along the first direction and arranged along the first direction and the second direction at the first and last rows of supporting structures. The stabilizing cable 8 is cross-arranged and horizontally arranged at the columns 1 between adjacent rows.

[0031] The stabilizing structure also includes wind-resistant cables 9 and inter-row struts 10. The multiple wind-resistant cables 9 are arranged at equal intervals along the first direction in the first and last rows of support structures, one end of which is connected to the triangular rigid support 4 and the other end is anchored to the ground. The multiple inter-row struts 10 are connected to the adjacent rows of triangular rigid supports 4 along the second direction.

[0032] The triangular rigid support 4 includes a crossbeam 41 and a web 42, and the crossbeam 41 and the web 42 are welded to form a triangular stable structure. The angle between the webs 42 is determined by the inclination angle of the photovoltaic module 6 and the spacing between the upper chord 2 and the lower chord 3. The photovoltaic module 6 is fixed to the crossbeam 41 by connecting the ear plate 412 with a bolt 411.

[0033] The triangular rigid support 4 also includes an upper node 1 43 , an upper node 2 44 , a first lower node 45 and a second lower node 46 . The crossbeam 41 is locked and fixed to the upper chord 2 via the upper node 1 43 or the upper node 2 44 , and the web member 42 is locked and fixed to the lower chord 3 via the first lower node 45 or the second lower node 46 .

[0034] The crossbeam 41 includes bolts 411 and lugs 412 . Threaded holes are provided on both sides of the upper end of the crossbeam 41 . The bolts 411 are symmetrically threadedly connected to both sides of the upper end of the crossbeam 41 . The lugs 412 are threadedly connected to the crossbeam 41 through the bolts 411 .

[0035] The upper node 43 includes a crossbeam pad 431, a fixing bolt 432 and a lower cover plate 433 with an ear plate. The crossbeam pad 431 is placed at the lower end of the middle part of the crossbeam 41 and welded thereto to form an integral whole. The lower end of the crossbeam pad 431 and the upper end of the lower cover plate 433 with the ear plate are fixedly connected. The upper node 43, the crossbeam pad 431 and the lower cover plate 433 with the ear plate are commonly penetrated by two threaded holes. The fixing bolt 432 is threadedly connected to the upper node 43 through the threaded hole. The crossbeam pad 431 and the lower cover plate 433 with the ear plate are commonly provided with a hole groove. The upper chord 2 passes through the hole groove between the crossbeam pad 431 and the lower cover plate 433 with the ear plate and is locked and fixed by the fixing bolt 432. The diagonal brace 5 is fixedly connected to the lower cover plate 433 with the ear plate.

[0036] The upper node 2 44 includes a crossbeam pad 2 441, a fixing bolt 2 442 and a lower cover plate 1 443. The crossbeam pad 2 441 is placed at the lower end of the middle part of the crossbeam 41 and welded thereto to form an integral whole. The lower end of the crossbeam pad 2 441 and the upper end of the lower cover plate 1 443 are fixedly connected. The upper node 2 44, the crossbeam pad 2 441 and the lower cover plate 1 443 are jointly penetrated by two threaded holes. The fixing bolt 2 442 is threadedly connected to the upper node 2 44 through the threaded hole. The crossbeam pad 2 441 and the lower cover plate 1 443 are jointly provided with a hole groove. The upper chord 2 passes through the hole groove between the crossbeam pad 2 441 and the lower cover plate 1 443 and is locked and fixed using the fixing bolt 2 442.

[0037] The first lower node 45 includes an upper cover plate 451, a third fixing bolt 452 and a second lower cover plate 453 with an ear plate. The upper cover plate 451 and the second lower cover plate 453 with an ear plate are symmetrically penetrated with four threaded holes. The upper cover plate 451 and the second lower cover plate 453 with an ear plate are fixedly connected by four third fixing bolts 452. The web 42 intersects at the upper end of the upper cover plate 451 and is welded thereto to form a whole. The upper cover plate 451 and the second lower cover plate 453 with an ear plate are jointly provided with a hole groove. The lower chord 3 passes through the hole groove between the upper cover plate 451 and the second lower cover plate 453 with an ear plate and is locked and fixed by the third fixing bolt 452. The windproof cable 9 and the inter-row strut 10 are connected and fixed to the second lower cover plate 453 with an ear plate.

[0038] The second lower node 46 includes an upper cover plate 461 with an ear plate, four fixing bolts 462 and a second lower cover plate 463. The upper cover plate 461 with an ear plate and the second lower cover plate 463 are symmetrically provided with four threaded holes. The upper cover plate 461 with an ear plate and the second lower cover plate 463 are fixedly connected by four fixing bolts 462. The web 42 intersects with the upper cover plate 461 with an ear plate and is welded thereto to form a whole. One end of the diagonal brace 5 is connected and fixed to the upper cover plate 461 with an ear plate. The upper cover plate 461 with an ear plate and the second lower cover plate 463 are jointly provided with a hole groove. The lower chord 3 passes through the hole groove between the upper cover plate 461 with an ear plate and the second lower cover plate 463 and is locked and fixed by four fixing bolts 462.

[0039] Further, the specific implementation steps of the present invention are described:

[0040] In slopes or potholes, columns 1 are erected at designed intervals, using a single-column design. The intervals between columns 1 are flexibly adjusted according to the terrain, and do not need to be strictly equal in height, so as to adapt to the height differences in complex terrain.

[0041] The tensioned cable structure tensions the upper chord 2 and the lower chord 3 between two adjacent columns 1 to ensure that they are located in the same vertical plane and apply initial prestress to improve the bearing capacity and wind resistance of the structure. At the same time, the spacing between the upper chord 2 and the lower chord 3 is determined according to the inclination angle of the photovoltaic module 6, and the recommended spacing is 1.5–2.5m.

[0042] Install triangular rigid supports 4, and fix multiple triangular rigid supports 4 between the upper chord 2 and the lower chord 3 at equal intervals along the first direction (recommended intervals are 2-4m). The support is welded into a triangular truss by a crossbeam 41 and a web member 42. The angle of the web member 42 is adjusted according to the inclination angle of the photovoltaic module 6 (recommended 25°-35°) and the cable spacing. The crossbeam 41 is locked to the upper chord 2 through the upper node 1 43 or the upper node 2 44, and the web member 42 is locked to the lower chord 3 through the first lower node 45 or the second lower node 46.

[0043] The photovoltaic components 6 are fixed on the crossbeam 41 by means of bolts 411 and lugs 412 to form a longitudinal continuous array, thereby ensuring that the components are stable and convenient for adjusting the angle.

[0044] Connect the diagonal braces 5 and install the cross-arranged diagonal braces 5 between adjacent triangular rigid supports 4, with both ends respectively fixed to the lower cover plate 433 with ear plates and the upper cover plate 461 with ear plates to form a spatial truss structure to effectively suppress the vertical and torsional deformation caused by wind loads.

[0045] The inclined cables 7 and inter-column stabilizing cables 8 are arranged. One end of the inclined cables 7 is connected to the top of the column 1, and the other end is anchored to the ground. The cables are located at the first and last rows of supporting structures and arranged along the first direction and the second direction. The inter-column stabilizing cables 8 are horizontally cross-tensioned between adjacent columns 1 in the second direction to enhance the lateral stability of the overall structure.

[0046] Install wind-resistant cables 9 and inter-row struts 10. The wind-resistant cables 9 are arranged at equal intervals along the first direction in the first and last rows of support structures, with one end fixed to the first lower node 45 of the triangular bracket and the other end anchored to the ground. The inter-row struts 10 connect the first lower nodes 45 of adjacent rows along the second direction, collaboratively dispersing wind loads to multiple rows of columns and ground anchor points, thereby improving the system's ability to resist lateral displacement.

[0047] Furthermore, the implementation details of key nodes are explained:

[0048] The upper node 1 43 is welded to the bottom of the crossbeam 41 through the crossbeam pad 1 431, and is fixed to the lower cover plate 1 433 with ear plates, and then embedded in the upper chord 2 and locked with the fixing bolt 1 432. At the same time, the diagonal brace 5 is connected to its ear plates. The first lower node 45 is welded to the upper cover plate 451 through the web member 42, and is clamped to the lower chord 3 with the lower cover plate 2 453 with ear plates through the fixing bolt 3 452.

[0049] Furthermore, the single-column design combined with the flexible cable structure allows the columns to be arranged at non-equal heights on slopes (height difference tolerance ±1.5m). The prestressed cables and triangular rigid supports work together to reduce the impact of wind vibration on photovoltaic modules 6 (amplitude reduction ≥60%). The wind-resistant cables 9 and inter-row struts 10 disperse wind loads. All cable clamp nodes and triangular supports 4 can be prefabricated in the factory and can be quickly assembled on site, thereby significantly improving construction efficiency.

[0050] Furthermore, the present invention provides an embodiment:

[0051] When installing on flat terrain, two columns 1 are first erected at a spacing of 20m. The upper and lower chords 2 and 3 are tensioned and prestressed with 15kN. Ten triangular rigid supports 4 are installed on the cables at a spacing of 2m. Adjacent supports are cross-connected with diagonal braces 5. Finally, photovoltaic modules 6 are installed. The system forms a stable truss structure. Under a wind load of level 8, the module amplitude is less than 5mm, the power generation efficiency remains above 95%, and the construction period is shortened by 30% compared with traditional supports.

[0052] Furthermore, the present invention provides an embodiment:

[0053] When installing on a 15° slope, the height difference of the columns 1 is adjusted by 1.2m, maintaining a spacing of 25m. The upper and lower chords 2 and 3 are tensioned and prestressed with 12kN. Eight triangular rigid supports 4 are installed at intervals of 3m, and the diagonal braces 5 are connected in an X shape. After installation, the system perfectly adapts to the terrain height difference, drains smoothly under heavy rain conditions, and there is no water accumulation in the components. The anti-slip coefficient reaches 1.5, fully meeting the safety requirements of steep slopes.

[0054] Furthermore, the present invention provides an embodiment:

[0055] When installing in coastal areas with strong winds, an encrypted layout scheme is adopted: the spacing between columns is 15m, the prestress is increased to 18kN, the spacing between four triangular rigid supports is 1.5m, and five diagonal braces are added between each support. After testing, it can withstand a level 12 typhoon, the maximum displacement of the component is only 8mm, and the elastic deformation of the cable structure can effectively absorb wind vibration energy, and the component breakage rate is reduced by 80% compared with traditional supports.

Claims

1. A single-column cable-supported photovoltaic support system, characterized in that: The invention comprises a plurality of rows of supporting structures and a stabilizing structure: the supporting structure comprises a column (1), an upper chord (2), a lower chord (3), a triangular rigid support (4), a diagonal brace (5) and a photovoltaic module (6); the upper chord (2) and the lower chord (3) are stretched between two columns (1); the column (1) and the upper chord (2) and the lower chord (3) are in the same plane; the plurality of triangular rigid supports (4) are installed between the upper chord (2) and the lower chord (3) and are arranged at equal intervals along a first direction; adjacent triangular rigid supports (4) are provided with diagonal braces (5); and the plurality of photovoltaic modules (6) are installed on the triangular rigid supports (4) along the first direction.

2. A single-column cable-supported photovoltaic support system according to claim 1, characterized in that: The stabilizing structure comprises a stay cable (7) and a stabilizing cable (8), wherein one end of the stay cable (7) is connected to the upper part of the column (1) and the other end is anchored to the ground, and is arranged along a first direction. The stay cables are arranged along the first direction and the second direction at the first and last rows of support structures, and the stabilizing cables (8) are cross-arranged and horizontally arranged at the columns (1) between adjacent rows.

3. The single-column cable-supported photovoltaic support system according to claim 1, characterized in that: The stabilizing structure further comprises wind-resistant cables (9) and inter-row struts (10), wherein the plurality of wind-resistant cables (9) are arranged at equal intervals along a first direction in the first and last rows of supporting structures, one end of which is connected to a triangular rigid support (4) and the other end is anchored to the ground, and the plurality of inter-row struts (10) are connected to adjacent rows of triangular rigid supports (4) along a second direction.

4. The single-column cable-supported photovoltaic support system according to claim 1, characterized in that: The triangular rigid support (4) comprises a crossbeam (41) and a web (42); the crossbeam (41) and the web (42) are welded to form a triangular stable structure; the angle between the webs (42) is determined by the inclination of the photovoltaic module (6) and the spacing between the upper chord (2) and the lower chord (3); the photovoltaic module (6) is connected to the ear plate (412) by bolts (411) so as to be fixed on the crossbeam (41).

5. The single-column cable-supported photovoltaic support system according to claim 4, characterized in that: The triangular rigid support (4) further comprises an upper node 1 (43), an upper node 2 (44), a first lower node (45) and a second lower node (46); the crossbeam (41) is locked and fixed to the upper chord (2) via the upper node 1 (43) or the upper node 2 (44); and the web member (42) is locked and fixed to the lower chord (3) via the first lower node (45) or the second lower node (46).

6. The single-column cable-supported photovoltaic support system according to claim 5, characterized in that: The crossbeam (41) includes a bolt (411) and an ear plate (412). Threaded holes are provided on both sides of the upper end of the crossbeam (41). The bolts (411) are symmetrically threadedly connected to both sides of the upper end of the crossbeam (41). The ear plate (412) is threadedly connected to the crossbeam (41) through the bolts (411).

7. The single-column cable-supported photovoltaic support system according to claim 6, characterized in that: The upper node (43) includes a crossbeam pad (431), a fixing bolt (432) and a lower cover plate (433) with an ear plate. The crossbeam pad (431) is placed at the lower end of the middle part of the crossbeam (41) and welded thereto to form a whole. The lower end of the crossbeam pad (431) and the upper end of the lower cover plate (433) with an ear plate are fixedly connected. The upper node (43), the crossbeam pad (431) and the lower cover plate (433) with an ear plate are integrally connected. Two threaded holes are provided through the same, and a fixing bolt (432) is threadedly connected to the upper node (43) through the threaded holes. A crossbeam pad (431) and a lower cover plate (433) with an ear plate are provided with a hole groove. The upper chord (2) passes through the hole groove between the crossbeam pad (431) and the lower cover plate (433) with an ear plate and is locked and fixed by a fixing bolt (432). The diagonal brace (5) is fixedly connected to the lower cover plate (433) with an ear plate.

8. The single-column cable-supported photovoltaic support system according to claim 7, characterized in that: The upper node 2 (44) comprises a crossbeam pad 2 (441), a fixing bolt 2 (442) and a lower cover plate 1 (443). The crossbeam pad 2 (441) is placed at the lower end of the middle part of the crossbeam (41) and welded thereto to form an integral body. The lower end of the crossbeam pad 2 (441) and the upper end of the lower cover plate 1 (443) are fixedly connected. The upper node 2 (44), the crossbeam pad 2 (441) and the lower cover plate 1 (443) are provided with two threaded holes through which the fixing bolt 2 (442) is threadedly connected to the upper node 2 (44) through the threaded holes. The crossbeam pad 2 (441) and the lower cover plate 1 (443) are provided with a hole groove. The upper chord (2) passes through the hole groove between the crossbeam pad 2 (441) and the lower cover plate 1 (443) and is locked and fixed using the fixing bolt 2 (442).

9. The single-column cable-supported photovoltaic support system according to claim 4, characterized in that: The first lower node (45) includes an upper cover plate (451), three fixing bolts (452) and a lower cover plate with an ear plate (453). The upper cover plate (451) and the lower cover plate with an ear plate (453) are symmetrically provided with four threaded holes. The upper cover plate (451) and the lower cover plate with an ear plate (453) are fixedly connected by four three fixing bolts (452). The web (42) intersects at the upper end of the upper cover plate (451) and is welded thereto to form a whole. The upper cover plate (451) and the lower cover plate with an ear plate (453) are provided with a hole groove. The lower chord (3) passes through the hole groove between the upper cover plate (451) and the lower cover plate with an ear plate (453) and is locked and fixed by three fixing bolts (452). The windproof cable (9) and the inter-row support rod (10) are connected and fixed to the lower cover plate with an ear plate (453).

10. The single-column cable-supported photovoltaic support system according to claim 5, characterized in that: The second lower node (46) includes an upper cover plate (461) with an ear plate, four fixing bolts (462) and a second lower cover plate (463). The upper cover plate (461) with an ear plate and the second lower cover plate (463) are symmetrically provided with four threaded holes. The upper cover plate (461) with an ear plate and the second lower cover plate (463) are fixedly connected by four fixing bolts (462). The web (42) intersects with the upper cover plate (461) with an ear plate and is welded thereto to form a whole. One end of the diagonal brace (5) is connected and fixed to the upper cover plate (461) with an ear plate. The upper cover plate (461) with an ear plate and the second lower cover plate (463) are provided with a hole groove. The lower chord (3) passes through the hole groove between the upper cover plate (461) with an ear plate and the second lower cover plate (463) and is locked and fixed by four fixing bolts (462).

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