Transverse large-span photovoltaic flexible support system

Abstract

The invention provides a transverse large-span photovoltaic flexible support system. The transverse large-span photovoltaic flexible support system comprises an inhaul cable assembly used for connecting photovoltaic assemblies; the end support structures are supported and connected to the two longitudinal ends of the inhaul cable assembly; the middle support assembly comprises a transverse steel frame structure which is supported and connected to the bottom of the inhaul cable assembly and located between the end support structures at the two ends. The two longitudinal ends of the transverse steel frame structure stretch across the two transverse sides of the inhaul cable assembly, and the bottom of the transverse steel frame structure is connected with a middle support structure. The middle support structure comprises a supporting base, a lower fixing device, a sliding device and an upper fixing device which are sequentially arranged from bottom to top, the lower fixing device is fixedly connected with the supporting base, the sliding device and the lower fixing device are assembled in a sliding mode, and the upper fixing device is assembled and connected with the sliding device through a damping gasket. The method can be suitable for special scenes with requirements for transverse span, and safe and stable operation of the system under various complex stress conditions is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic brackets, and in particular to a photovoltaic flexible bracket system with a large transverse span. Background Art

[0002] As the global demand for clean energy continues to grow, solar energy, as a renewable energy source, is increasingly being used. Photovoltaic modules can be used to convert solar energy into electrical energy. Due to the influence of terrain and natural environment, cable-structured flexible supports are usually used to support photovoltaic modules. Cable-structured flexible supports can adapt to more complex terrains with their large longitudinal span and less foundations, and have broad application prospects.

[0003] However, in some special terrains (such as water plants and sewage treatment plants), the lateral spacing of traditional flexible support systems cannot meet the requirements of actual use. First: The longitudinal span of traditional flexible supports is generally 10 meters to 60 meters, but the lateral span is smaller (generally 3 meters to 9 meters). For special scenarios with requirements for lateral spans, it cannot meet the situation with larger lateral spans. Second: Due to the large lateral span, the structural form of the traditional middle support cannot meet the problems of structural force and overall stability. Third: Due to the large lateral span, the traditional connection method between the middle support and the cable cannot meet the structural force requirements. Summary of the invention

[0004] In view of the above situation, the present invention provides a photovoltaic flexible support system with a large lateral span to solve the problem that the lateral spacing of the traditional flexible support system cannot meet the requirements of actual use.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a transverse large-span photovoltaic flexible support system, which includes: a cable assembly for connecting photovoltaic modules; an end support structure supported and connected to the longitudinal ends of the cable assembly; a middle support assembly, including a transverse steel frame structure supported and connected to the bottom of the cable assembly and located between the end support structures at both ends, the longitudinal ends of the transverse steel frame structure span the lateral sides of the cable assembly and the bottom is connected to the middle support structure; the middle support structure includes a supporting base, a lower fixing device, a sliding device and an upper fixing device arranged in sequence from bottom to top, the lower fixing device is fixedly connected to the supporting base, the sliding device is slidably assembled with the lower fixing device, and the upper fixing device is assembled and connected to the sliding device through a damping gasket.

[0006] Preferably, the transverse steel frame structure includes a base and a connecting device for fixing the cable assembly to the base, the base includes an upper chord and at least two lower chords arranged below the upper chord, connecting rods are connected between the upper chord and the lower chord and between the lower chords, the connecting device includes a detachably connected pad and a pressure plate, the pad is fixed to the upper chord, and a through hole for accommodating the cable assembly is formed on the side of the pressure plate facing the pad.

[0007] The use of detachable pads and pressure plates as the connecting device of the cable assembly makes the cable assembly easier to disassemble, convenient for maintenance and replacement, and reduces maintenance time and cost. The pads and pressure plates can provide better contact surfaces and improve the performance of mechanical connections, thereby avoiding direct connection and contact between the cable assembly and the base, reducing the wear caused by direct contact between the cable assembly and the base, and extending the service life. The pads and pressure plates can also disperse stress, reduce stress concentration on the base or cable assembly, and improve the stability and reliability of the structure.

[0008] The force of the photovoltaic module is transmitted to the connecting device through the cable assembly. The forces of multiple connecting devices are jointly transmitted to the upper chord of the base, and then transmitted to the lower chord under the action of the connecting rod, and then transmitted to the middle support structure at both ends. The chord structure of the base is formed with multiple triangular units, each of which can maintain its shape independently and maintain the stability of the structure even when subjected to external forces. These units can resist compression, tension and shear forces, making the entire truss structure more stable, and can evenly transmit the forces of multiple cable assemblies to the middle support structures at both ends. It is suitable for situations with a horizontal span of 10m to 45m. The height of the base truss structure usually accounts for about 1 / 10 to 1 / 20 of the span.

[0009] Preferably, the length of the pad is not less than the diameter of the upper chord, providing a wider contact surface for the cable assembly, improving the connection stability of the cable assembly, and avoiding direct contact and friction between the cable assembly and the base.

[0010] Preferably, the inner wall of the perforation is formed with a plurality of straight lines parallel to the cable assembly, which can increase the friction force by increasing the friction coefficient, thereby making the anchoring of the cable assembly more stable.

[0011] Preferably, an arc seat matching the curvature of the upper chord is formed at the bottom of the pad. Since the arc seat is arc-shaped and its curvature matches the curvature of the upper chord of the base, when the arc seat is connected to the steel frame, for example, by welding, the arc seat can fit tightly with the upper chord, which can better disperse the load and reduce local stress concentration.

[0012] Preferably, there are a plurality of connecting devices, and every other connecting device is fixed to the upper chord via a support.

[0013] Preferably, both ends of the lower chord of the base are connected to the upper fixing device through bolt balls.

[0014] Preferably, the sliding device is an H-shaped plate, the upper fixing device is a first U-shaped plate with an opening facing downward, the lower fixing device is a second U-shaped plate with an opening facing upward, the inner walls of both side plates of the first U-shaped plate and the second U-shaped plate are provided with limiting wing plates that can be clamped in the belly cavity of the H-shaped plate, and the damping gasket is arranged between the H-shaped plate and the first U-shaped plate.

[0015] Preferably, a polytetrafluoroethylene plate is provided between the H-shaped plate and the second U-shaped plate.

[0016] Preferably, the supporting base comprises a foundation and a corbel column arranged above the foundation, and the lower fixing device is arranged on the top surface of the corbel column.

[0017] The beneficial effect of the present invention is that a photovoltaic flexible support system with a large horizontal span of the present invention is provided with a horizontal steel frame structure and can be applied to special scenarios with requirements for the horizontal span. The vertical and horizontal forces generated by the self-weight, wind load, and snow load of the photovoltaic module can be transmitted to the cable assembly and the horizontal steel frame structure, and the load is evenly transmitted to the two ends of the horizontal steel frame structure, and finally the vertical load is transmitted to the ground through the middle support structure. And because the two ends of the base of the horizontal steel frame structure and the supporting base of the middle support structure can slide relative to each other through the upper fixing device, the sliding device and the lower fixing device, not only can the large displacement caused by the temperature in the direction of the large horizontal span be released, but also the horizontal load generated by the photovoltaic module can be consumed, thereby improving the structural stability of the photovoltaic support. Through the above structure, the photovoltaic flexible support system of the present invention can be applied to special scenarios with requirements for the horizontal span, ensuring the safe and stable operation of the system under various complex stress conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the lateral large-span photovoltaic flexible support system of the present invention.

[0020] Figure 2It is a structural schematic diagram of the base of the horizontally large-span photovoltaic flexible support system of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the middle support structure of the horizontally large-span photovoltaic flexible support system of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the connection device of the horizontal large-span photovoltaic flexible support system of the present invention.

[0023] Figure 5 It is a schematic diagram of the pressure plate structure of the connecting device of the transverse large-span photovoltaic flexible support system of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the bolt ball of the horizontally large-span photovoltaic flexible support system of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the coordination of the lower fixing device, the sliding device and the upper fixing device of the transverse large-span photovoltaic flexible support system of the present invention.

[0026] The corresponding relationship between the reference numerals and the components is as follows:

[0027] 1. End support structure; 2. Base; 21. Upper chord; 22. Lower chord; 23. Vertical rod; 24. Diagonal rod; 3. Connecting device; 31. Press plate; 311. Perforation; 312. Grain; 313. Opening; 32. Pad; 33. Arc seat; 4. Middle support structure; 41. Support base; 411. Precast pile; 412. Cap; 413. Column; 414. Corbel; 42. Lower fixing device; 43. Sliding device; 44. Upper fixing device; 5. Cable group; 51. Upper cable; 52. Lower cable; 6. Bolt ball; 7. Rubber gasket; 8. Polytetrafluoroethylene plate; 9. Wind-resistant structure; 10. Pillar; 11. Connecting plate. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0029] See also Figures 1 to 7 The present invention provides a lateral large-span photovoltaic flexible support system, comprising a cable assembly, an end support structure 1, and a middle support assembly. Among them:

[0030] like Figure 1As shown, the cable assembly is used to connect the photovoltaic assembly. There are multiple cable assemblies. Every two adjacent cable assemblies form a support surface for supporting the photovoltaic assembly. The photovoltaic assembly can be connected to the cable assembly by means of its mounting components or welding or clamping. The end bracket structure 1 supports and is connected to the longitudinal ends of the cable assembly. In this embodiment, the end bracket structure 1 adopts a herringbone support, which is a prior art.

[0031] The middle support assembly includes a transverse steel frame structure that supports and connects to the bottom of the cable assembly and is located between the end support structures 1 at both ends. The longitudinal ends of the transverse steel frame structure span the lateral sides of the cable assembly and the bottom is connected to the middle support structure 4. Figure 3 and Figure 7 As shown, the middle support structure 4 includes a supporting base 41, a lower fixing device 42, a sliding device 43 and an upper fixing device 44 which are arranged in sequence from bottom to top. The lower fixing device 42 is fixedly connected to the supporting base 41, the sliding device 43 is slidably assembled with the lower fixing device 42, and the upper fixing device 44 is assembled and connected with the sliding device 43 via a damping gasket 7.

[0032] Furthermore, there are multiple middle bracket assemblies, and the multiple middle bracket assemblies are distributed between the end bracket structures 1 at both ends along the longitudinal direction of the cable assembly.

[0033] Furthermore, a wind-resistant structure 9 is provided between the end support structures 1 at both ends. The wind-resistant structure 9 adopts a cable truss system, and the wind-resistant structure 9 is a prior art.

[0034] As a preferred implementation, Figure 2 and Figure 4 As shown, the transverse steel frame structure includes a base 2 and a connecting device 3 for fixing the cable assembly to the base 2. The base 2 includes an upper chord rod 21 and at least two lower chord rods 22 arranged below the upper chord rod 21. Connecting rods are connected between the upper chord rod 21 and the lower chord rod 22, and between the lower chord rods 22. The connecting device 3 includes a detachably connected pad 32 and a pressure plate 31. The pad 32 is fixed to the upper chord rod 21. Figure 5 As shown, a through hole 311 for accommodating the cable assembly is formed on one side of the pressure plate 31 facing the backing plate 32 .

[0035] In this implementation, if Figure 2 As shown, the base 2 includes an upper chord 21, two lower chords 22 parallel to and arranged below the upper chord 21, and a connecting rod. The connecting rod includes a plurality of vertical rods 23 vertically connected between the upper chord 21 and the lower chord 22 and between the two lower chords 22. The plurality of vertical rods 23 are evenly spaced, and a diagonal rod 24 is diagonally connected between the two vertical rods 23.

[0036] The upper chord 21 and the lower chord 22 are usually made of high-strength steel. The upper chord 21 bears compressive loads. When the truss is subjected to a vertical downward load, the upper chord 21 balances these forces by compressive deformation. The lower chord 22 mainly bears tensile loads. When the truss is subjected to a vertical downward load, the lower chord 22 balances the load by tensile deformation. Under the action of dynamic loads (such as wind and earthquakes), the chord needs to have a certain degree of flexibility to absorb and disperse energy while maintaining the overall stability of the structure. The base 2 is usually manufactured in the form of prefabricated components, which is convenient for on-site assembly and reduces construction time and cost.

[0037] The vertical rods 23 and the diagonal rods 24 are connected to the upper chord rods 21 and the lower chord rods 22 by welding. The materials of the vertical rods 23 and the diagonal rods 24 are usually high-strength steel. The connecting rods are divided into tension rods and compression rods according to their force characteristics. The tension rods, i.e. the diagonal rods 24, are usually slender and bear tension. Their function is to evenly distribute the tension between the upper chord rods 21 and the lower chord rods 22 to prevent the transverse steel frame structure from being deformed due to unbalanced loads. The compression rods, i.e. the vertical rods 23, are relatively thick and short and bear pressure. They play a supporting role in the structure to prevent the truss from being compressed and deformed under vertical loads.

[0038] like Figure 4 and Figure 5 As shown, the pad 32 and the pressure plate 31 are connected by bolts, and the pressure plate 31 and the pad 32 are correspondingly provided with a plurality of pairs of openings 313, and each pair of openings 313 is penetrated with a bolt connection. Specifically, the cable assembly is placed on the pad 32, and then the pressure plate 31 is placed, so that the bolts pass through the pad 32 and the pressure plate 31 in sequence through the openings 313, and the elastic gasket is placed under the bolt head, and the pressure generated by its elastic deformation provides additional friction to prevent the bolts from loosening, which can prevent loosening caused by vibration or temperature changes, thereby ensuring the safety and reliability of the overall structure, and screwing in double nuts for locking. The position of the pressure plate 31 and the size of the clamping force can be adjusted as needed, which is convenient for construction and has good adjustability and adaptability.

[0039] As a preferred implementation, the length of the pad 32 is not less than the diameter of the upper chord 21 .

[0040] As a preferred embodiment, the inner wall of the through hole 311 is formed with a plurality of straight lines 312 parallel to the cable assembly.

[0041] As a preferred implementation, Figure 4 As shown, the bottom of the pad 32 is formed with an arc seat 33 that matches the arc of the upper chord rod 21. The arc seat 33 can be connected to the upper chord rod 21 by welding.

[0042] As a preferred embodiment, there are multiple connecting devices 3, and every other connecting device 3 is fixed to the upper chord 21 through a support 10. Figure 4 As shown, for the convenience of description, the two cable assemblies are regarded as a cable group 5, and the two cables of the cable group 5 are named as the upper cable 51 and the lower cable 52, respectively, so that the connecting device 3 of the upper cable 51 is fixed to the base 2 through the pillar 10. Specifically, the pad 32 of the above-mentioned connecting device 3 is rectangular in shape, and is welded to the pillar 10 in the form of welding and also serves as the sealing plate of the pillar 10. The pillar 10 adopts a circular tube cross-section, and the lower end of the pillar 10 is cut into an arc and welded to the upper chord 21 of the base 2. An arc seat 33 is provided on the bottom surface of the pad 32 of the connecting device 3 of the lower cable 52. The above-mentioned pad 32 is pressed from a steel plate. Through the setting of the pillar 10, the support surface of the photovoltaic assembly formed by the two cable assemblies is inclined so that the photovoltaic assembly can receive more light, and changing the height of the pillar 10 can adjust the inclination angle of the photovoltaic panel to meet the actual use requirements.

[0043] Furthermore, in order to prevent the pad 32 from causing an adverse shearing effect on the cable, the edge of the pad 32 is rounded.

[0044] As a preferred implementation, Figure 6 As shown, both ends of the lower chord 22 of the base 2 are connected to the upper fixing device 44 through bolt balls 6. The bolt ball 6 can be welded to the upper fixing device 44 through a round steel pipe, and a stiffening plate is arranged on the outer circumference of the round steel pipe to enhance the connection stability and rigidity of the bolt ball 6.

[0045] As a preferred embodiment, the sliding device 43 is an H-shaped plate, the upper fixing device 44 is a first U-shaped plate with an opening facing downward, the lower fixing device 42 is a second U-shaped plate with an opening facing upward, the inner walls of both side plates of the first U-shaped plate and the second U-shaped plate are provided with limiting wing plates that can be clamped in the belly of the H-shaped plate, and the damping gasket 7 is provided between the H-shaped plate and the first U-shaped plate. The damping gasket 7 can be a rubber gasket.

[0046] In this embodiment, a first U-shaped plate and a first limiting wing plate can be formed by welding a C-shaped steel plate on the connecting plate 11, and a second U-shaped plate and a second limiting wing plate can be formed similarly. The upper and lower flanges of the H-shaped steel plate are respectively inserted into the gaps of the C-shaped steel plates of the upper fixing device 44 and the lower fixing device 42, which can not only transfer vertical loads to form vertical constraints, but also release horizontal loads. That is, through the sliding action, not only can the large displacement caused by temperature in the horizontal large span direction of the support structure be released, but also the horizontal force generated when the photovoltaic module is subjected to wind load can be consumed, thereby improving the structural stability of the photovoltaic support.

[0047] As a preferred embodiment, a polytetrafluoroethylene plate 8 is provided between the H-shaped plate and the second U-shaped plate. Since a damping gasket 7 is provided between the H-shaped plate and the first U-shaped plate, the friction between the two is large and it is not easy to slide, and a polytetrafluoroethylene plate 8 is provided between the H-shaped plate and the second U-shaped plate, and the polytetrafluoroethylene plate 8 plays a sliding role, the friction between the two is small and it is easy to slide, so the H-shaped plate and the first U-shaped plate can only slide relative to the second U-shaped plate, and when the horizontal force is transmitted to the middle support structure 4, the upper fixing device 44 and the sliding device 43 together with the lower fixing device 42 produce a sliding effect.

[0048] As a preferred embodiment, the supporting base 41 includes a foundation and a corbel column arranged above the foundation, and the lower fixing device 42 is arranged on the top surface of the corbel column.

[0049] Specifically, Figure 3 As shown, the foundation adopts a prefabricated concrete pile 411, and a concrete cap 412 is arranged on the pile top, and a corbel column is arranged on the concrete cap 412, and the corbel column includes a column 413 and a corbel 414. The column 413 can be a concrete column or a steel column.

[0050] Concrete precast piles 411 are made in precast component factories or construction sites, usually using high-strength concrete. The pile diameter is 400mm~600mm, the wall thickness is 100mm~120mm, and the pile length is calculated based on the on-site foundation conditions. A prestressed steel cage is set inside the pile, which has good vertical bearing capacity and pull-out bearing capacity.

[0051] The concrete cap 412 is cast on site, with a thickness of about 500 mm and reinforced steel inside. The cap 412 effectively transfers the load from the upper structure to the pile, while increasing the stress-bearing area of ​​the pile top, dispersing the concentrated stress on the pile top, and reducing the risk of damage caused by excessive local pressure on the pile top.

[0052] When the column 413 is a concrete column, the concrete column is cast in place as a whole, and is provided with vertical steel bars inside, so that the vertical steel bars are anchored into the concrete cap 412, and the stirrups are surrounded on the outside to constrain the concrete and improve the ductility and shear resistance of the column. The concrete column bears the vertical load through its own compressive resistance. Concrete has good compressive resistance and can effectively resist the gravity and various static loads from the upper structure. At the same time, it can resist horizontal loads (such as wind loads, earthquake effects, etc.). Under the action of horizontal loads, the column will bend and deform, the internal steel bars will bear tension, and the concrete will bear pressure. The two work together to resist the horizontal force and maintain the overall stability of the structure.

[0053] When the column 413 is a steel column, its cross-sectional shape is mostly a box-shaped or I-shaped cross-section. Embedded parts are arranged inside the pedestal 412, and the steel column is connected to the embedded parts with high-strength bolts. The steel column has excellent compression and bending resistance. When subjected to vertical loads, the high strength characteristics of steel enable the steel column to effectively support the weight from the upper structure and transfer it downward to the foundation. At the same time, when subjected to horizontal forces such as wind loads or earthquakes, the steel column will bend and deform. Since steel has good ductility and toughness, it can maintain the integrity and stability of the structure under a certain degree of deformation.

[0054] The corbel 414 is a part protruding from the column 413. The upper part of the corbel 414 is wider and the lower part gradually narrows, and the upper width of the corbel 414 is the same as the lateral width of the base 2. This shape can increase the rigidity of the connection between the corbel 414 and the column 413, reduce stress concentration, effectively bear the concentrated load transmitted by the base 2, and safely transmit it to the main structure, thereby ensuring the stability and safety of the entire structure.

[0055] The working principle of the lateral large-span photovoltaic flexible support system of the present invention is as follows:

[0056] The photovoltaic modules are subjected to the effects of their own weight, wind load, and snow load, which generate vertical and horizontal forces, and the forces are first transmitted to the mounting components of the photovoltaic modules. The mounting components transmit the force to the cables connected thereto, causing the cable assembly to stretch or contract in the horizontal direction. Due to the prestress of the cable assembly, it can resist part or all of the horizontal force. At this time, the cable assembly is in a tension state, bearing the vertical force and part of the horizontal force of the photovoltaic module. At the same time, the cable assembly transmits the horizontal and vertical forces to the base 2 through the connecting device 3. The base 2 can effectively transfer the load from the top or middle to the support point at the bottom. Specifically, the upper chord 21 of the base 2 usually bears compression force, while the lower chord 22 bears tension, and the connecting rod bears tension or pressure according to its position and direction. When the vertical load acts on the base 2, the compression force of the upper chord 21 and the tension of the lower chord 22 are balanced by the tension and pressure of the connecting rod, and the load is evenly distributed to the two ends of the base 2, and then the force is effectively transmitted to the supporting base 41 through the upper fixing device 44, the sliding device 43, and the lower fixing device 42. At this time, the horizontal load can be consumed under the sliding action of the upper fixing device 44, the sliding device 43, and the lower fixing device 42, and the column 413 of the supporting base 41 bears the vertical load through its own compressive resistance, and also bears a certain bending moment. The column 413 and the pedestal 412 are rigidly connected to transmit the force to the precast concrete pile 411 through the pedestal 412, and finally transmit the force to the ground.

[0057] To summarize, the force of the photovoltaic flexible bracket is finally transmitted to the ground through the coordinated action of the photovoltaic components, mounting parts, cable assemblies, connecting device 3, base 2, upper fixing device 44, sliding device 43, lower fixing device 42, and supporting base 41, ensuring the safe and stable operation of the system under various complex stress conditions.

[0058] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A lateral large-span photovoltaic flexible support system, characterized in that: include: Cable assemblies for connecting photovoltaic modules; an end bracket structure supporting and connected to both longitudinal ends of the cable assembly; A middle bracket assembly includes a transverse steel frame structure that supports and is connected to the bottom of the cable assembly and is located between the end bracket structures at both ends, wherein the longitudinal ends of the transverse steel frame structure span the lateral sides of the cable assembly and the bottom is connected to the middle bracket structure; The middle support structure includes a supporting base, a lower fixing device, a sliding device and an upper fixing device which are arranged in sequence from bottom to top. The lower fixing device is fixedly connected to the supporting base, the sliding device is slidably assembled with the lower fixing device, and the upper fixing device is assembled and connected with the sliding device via a damping gasket.

2. The lateral large-span photovoltaic flexible support system according to claim 1, characterized in that: The transverse steel frame structure includes a base and a connecting device for fixing the cable assembly to the base, the base includes an upper chord and at least two lower chords arranged below the upper chord, connecting rods are connected between the upper chord and the lower chord and between the lower chords, the connecting device includes a detachable pad and a pressure plate, the pad is fixed to the upper chord, and a through hole for accommodating the cable assembly is formed on the side of the pressure plate facing the pad.

3. The lateral large-span photovoltaic flexible support system according to claim 2, characterized in that: The length of the pad is not less than the diameter of the upper chord.

4. The lateral large-span photovoltaic flexible support system according to claim 2, characterized in that: The inner wall of the perforation is formed with a plurality of straight lines parallel to the cable assembly.

5. The lateral large-span photovoltaic flexible support system according to claim 2, characterized in that: The bottom of the pad is formed with an arc seat matching the arc of the upper chord rod.

6. The lateral large-span photovoltaic flexible support system according to claim 2, characterized in that: There are multiple connecting devices, and every other connecting device is fixed to the upper chord rod through a support.

7. The lateral large-span photovoltaic flexible support system according to claim 2, characterized in that: The two ends of the lower chord of the base are connected to the upper fixing device through bolt balls.

8. The lateral large-span photovoltaic flexible support system according to claim 1, characterized in that: The sliding device is an H-shaped plate, the upper fixing device is a first U-shaped plate with an opening facing downward, the lower fixing device is a second U-shaped plate with an opening facing upward, the inner walls of both side plates of the first U-shaped plate and the second U-shaped plate are provided with limiting wing plates that can be clamped in the belly cavity of the H-shaped plate, and the damping gasket is arranged between the H-shaped plate and the first U-shaped plate.

9. The lateral large-span photovoltaic flexible support system according to claim 8, characterized in that: A polytetrafluoroethylene plate is provided between the H-shaped plate and the second U-shaped plate.

10. The lateral large-span photovoltaic flexible support system according to claim 1, characterized in that: The supporting base comprises a foundation and a corbel column arranged above the foundation, and the lower fixing device is arranged on the top surface of the corbel column.

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