Large-span photovoltaic support connecting structure

Abstract

The application relates to a large-span photovoltaic support connecting structure, belonging to the photovoltaic support field, which comprises a fulcrum cable, an auxiliary cable, a first buffer damping assembly and a plurality of photovoltaic panels arranged at intervals along the length direction of the fulcrum cable, wherein the photovoltaic panels are arranged obliquely, a first photovoltaic panel has a frame, the two sides of the frame are respectively a first hinged side and a first free side, the first hinged side is hingedly connected with the fulcrum cable through a first connecting assembly, the first free side is fixed with a first connecting arm, the first connecting arm has an arc-shaped first mounting groove, the auxiliary cable passes through the first mounting groove, and the first buffer damping assembly allows the first connecting arm to make an elastic damping sliding motion relative to the auxiliary cable; the two sides of a second photovoltaic panel are respectively fixed on the fulcrum cable and the auxiliary cable. The application can improve the stability of the overall structure.

Description

Technical Field

[0001] This application relates to the field of photovoltaic support structures, and in particular to a connection structure for a large-span photovoltaic support structure. Background Technology

[0002] Flexible photovoltaic support is a large-span, high-clearance, multi-span structure that uses rigid supports at both ends as fixing points to tension prestressed steel wire ropes or steel strands. The photovoltaic panels are fixed to the steel strands by clips, forming a large-span load-bearing flexible support system.

[0003] Photovoltaic panels are often arranged at an angle to achieve a good angle of illumination. Therefore, when photovoltaic panels are subjected to horizontal wind loads, the horizontal wind loads will generate superimposed forces in the horizontal and vertical directions on the photovoltaic panels, making the photovoltaic panels prone to superimposed movements of horizontal swaying and vertical swaying.

[0004] Because of the extremely large span of the steel cable, the support stability in the middle of the cable is poor. Therefore, when subjected to a large horizontal wind load, the sway of the multiple photovoltaic panels located in the middle of the cable is quite significant, thus affecting the overall stability of the structure. Summary of the Invention

[0005] To improve the overall structural stability, this application provides a large-span photovoltaic support connection structure.

[0006] This application provides a large-span photovoltaic support connection structure, which adopts the following technical solution:

[0007] A large-span photovoltaic support connection structure includes a fulcrum cable, an auxiliary cable, a first buffer and damping component, and multiple photovoltaic panels arranged at intervals along the length of the fulcrum cable. The photovoltaic panels are inclined. Multiple photovoltaic panels located in the middle of the fulcrum cable are named first photovoltaic panels, and multiple photovoltaic panels located at the ends of the fulcrum cable are named second photovoltaic panels. The first photovoltaic panel has a frame, with a first hinge side and a first free side on both sides of the frame. The first hinge side is hinged to the fulcrum cable through a first connecting component. The first free side is inclined upward and has a first connecting arm fixed to it. The first connecting arm has an arc-shaped first mounting groove, the center of curvature of which coincides with the hinge center of the first hinge side. The auxiliary cable passes through the first mounting groove. The first buffer and damping component allows the first connecting arm to perform elastically damped sliding motion relative to the auxiliary cable. The two sides of the second photovoltaic panel are fixed to the fulcrum cable and the auxiliary cable, respectively.

[0008] By adopting the above technical solution, when a horizontal wind load is applied to the first photovoltaic panel located in the middle of the overall structure, the vertical component of the horizontal wind load applied to the first photovoltaic panel is downward. This vertical component will force the first photovoltaic panel to deflect at a certain angle around the fulcrum cable, and the first connecting arm will perform elastic damping sliding motion relative to the auxiliary cable. That is, the angle between the first photovoltaic panel and the horizontal plane is reduced, which greatly reduces the wind resistance of the overall structure, thereby further reducing the impact of wind load on the stability of the overall structure. Secondly, when the first photovoltaic panel deflects at a certain angle around the fulcrum cable, it will amplify the displacement stroke of the first free side relative to the auxiliary cable. Since the first connecting arm performs elastic damping sliding motion relative to the auxiliary cable, the large stroke elastic sliding can buffer the vertical component, and the large stroke damping friction can efficiently convert the vertical kinetic energy of the first photovoltaic panel into heat energy, thereby reducing the impact effect of the vertical component on the middle of the auxiliary cable, and thus reducing the vertical swing frequency and amplitude of the middle position of the auxiliary cable, thereby greatly improving the stability of the overall structure.

[0009] In summary, by using a hinged first photovoltaic panel and a first buffer and damping component, the first photovoltaic panel can adaptively adjust its tilt angle according to the magnitude of the horizontal wind load, thereby reducing the impact of wind resistance. It can also amplify the displacement stroke of the first free side of the first photovoltaic panel relative to the auxiliary cable. The large-stroke elastic sliding can buffer the vertical component force, while the large-stroke damping friction can efficiently convert the vertical kinetic energy of the first photovoltaic panel into heat energy, thereby reducing the impact effect of the vertical component force on the middle of the auxiliary cable, and thus reducing the vertical swing frequency and amplitude at the middle position of the auxiliary cable, so as to greatly improve the stability of the overall structure.

[0010] Optionally, the diameter of the fulcrum cable is larger than the diameter of the auxiliary cable.

[0011] Optionally, the tension of the fulcrum cable is greater than the tension of the auxiliary cable.

[0012] Optionally, the first buffer and shock absorption assembly includes a first steel pipe, a first mounting block, a rubber block, and two first springs. The first steel pipe is sleeved and fixed to the auxiliary cable, and the rubber block is sleeved and fixed to the first steel pipe. The two side walls of the rubber block are respectively fitted to the arc-shaped groove wall of the first mounting groove. The first mounting block is detachably fixed to the groove opening of the first mounting groove. The first springs extend along the arc direction of the first mounting groove. One end of each of the two first springs is fixed to the bottom of the first mounting groove and the end face of the first mounting block, respectively. The other ends of each of the two first springs abut against the two side surfaces of the rubber block, respectively.

[0013] Optionally, it also includes a guide plate and a second damping assembly. The guide plate is located between two adjacent first photovoltaic panels. The fulcrum cable and the auxiliary cable are located at the same horizontal position. The auxiliary cable is fitted with and fixed to a first steel pipe. The two sides of the guide plate are a second hinge side and a second free side, respectively. The second hinge side is hinged to the fulcrum cable through a second connecting assembly. The second free side is inclined downwards and is fixed with a second connecting arm. The second connecting arm has an arc-shaped second mounting groove. The curvature center of the second mounting groove coincides with the hinge center of the second hinge side. The first steel pipe passes through the second mounting groove. The first damping assembly allows the first connecting arm to perform elastic damping sliding motion relative to the first steel pipe. The second damping assembly allows the second connecting arm to perform elastic damping sliding motion relative to the first steel pipe.

[0014] Optionally, the angle of inclination between the force guide plate and the first photovoltaic panel relative to the horizontal plane is equal, and the area of ​​the force-bearing surface of the force guide plate is greater than or equal to the area of ​​the force-bearing surface of the first photovoltaic panel.

[0015] Optionally, the angle of inclination of the force guide plate relative to the horizontal plane is greater than the angle of inclination of the first photovoltaic panel relative to the horizontal plane, and the area of ​​the force-bearing surface of the force guide plate is less than or equal to the area of ​​the force-bearing surface of the first photovoltaic panel.

[0016] Optionally, it also includes a rubber block, which is sleeved and fixed to the first steel pipe. The first buffer and shock absorption assembly includes a first mounting block and two first springs, and the second buffer and shock absorption assembly includes a second mounting block and two second springs. The first mounting block is detachably fixed to the opening of the first mounting groove, and the second mounting block is detachably fixed to the opening of the second mounting groove. The sidewall of the rubber block is simultaneously in contact with the arc-shaped groove walls of the first and second mounting grooves. The first springs extend along the arc direction of the first mounting groove, and the second springs extend along the arc direction of the second mounting groove. One end of each of the two first springs is fixed to the bottom of the first mounting groove and the end face of the first mounting block, respectively, and the other end of each of the two first springs abuts against the two sides of the rubber block, respectively. One end of each of the two second springs is fixed to the bottom of the second mounting groove and the end face of the second mounting block, respectively, and the other end of each of the two second springs abuts against the two sides of the rubber block, respectively.

[0017] Optionally, the first damping assembly further includes a first adjusting bolt, wherein the first mounting block slides along the arc direction of the first mounting groove, and the first adjusting bolt is used to fix the sliding position of the first mounting block; the second damping assembly further includes a second adjusting bolt, wherein the second mounting block slides along the arc direction of the second mounting groove, and the second adjusting bolt is used to fix the sliding position of the second mounting block.

[0018] Optionally, the second connecting arm is fixed with an elastic rod, and the first connecting arm protrudes and is fixed with two meshing teeth. The end of the elastic rod engages with the meshing groove between the two meshing teeth, so that the first connecting arm and the second connecting arm are temporarily fixed relative to each other.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] By using a hinged first photovoltaic panel and a first buffer and damping component, the first photovoltaic panel can adaptively adjust its tilt angle according to the magnitude of the horizontal wind load, thereby reducing the impact of wind resistance. It can also amplify the displacement stroke of the first free side of the first photovoltaic panel relative to the auxiliary cable. The large-stroke elastic sliding can buffer the vertical component force, while the large-stroke damping friction can efficiently convert the vertical kinetic energy of the first photovoltaic panel into heat energy, thereby reducing the impact effect of the vertical component force on the middle of the auxiliary cable, and thus reducing the vertical swing frequency and amplitude of the middle position of the auxiliary cable, so as to greatly improve the stability of the overall structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the mid-span portion of the large-span photovoltaic support connection structure in Example 1.

[0022] Figure 2 This is a side view of the first photovoltaic panel in Example 1.

[0023] Figure 3 yes Figure 1 A magnified view of a portion of point A in the middle.

[0024] Figure 4 yes Figure 1 A magnified view of a section at point B.

[0025] Figure 5 This is a schematic diagram of the mid-span portion of the large-span photovoltaic support connection structure in Example 2.

[0026] Figure 6 This is a side view of the first photovoltaic panel and the force guide plate in Example 2.

[0027] Figure 7 This is a schematic diagram of Embodiment 2 illustrating the second connecting component.

[0028] Figure 8 yes Figure 5 A magnified view of a section at point C.

[0029] Figure 9 This is a side view of the first photovoltaic panel in Example 3.

[0030] Figure 10 This is a side view of the guide plate in Example 3.

[0031] Figure 11 This is a schematic diagram of Example 4 illustrating the engagement relationship between the elastic rod and the meshing teeth.

[0032] Explanation of reference numerals in the attached drawings: 1. First shock absorber assembly; 2. Second shock absorber assembly; 3. First connecting assembly; 5. Second connecting assembly; 10. Fulcrum cable; 101. First photovoltaic panel; 1011. First hinged side; 1012. First free side; 102. Frame; 103. Force guide plate; 1031. Second hinged side; 1032. Second free side; 11. First connecting arm; 12. First mounting block; 121. First inclined plane; 13. Rubber block; 14. First spring; 15. First mounting groove; 16. First steel pipe; 17. First clamping screw. 18. Bolt; 20. First adjusting bolt; 21. Auxiliary cable; 22. Second connecting arm; 23. Second mounting block; 24. Second inclined plane; 25. Second spring; 26. Second mounting groove; 27. Second adjusting bolt; 28. Elastic rod; 39. Engaging tooth; 20. Engaging groove; 31. First connecting plate; 32. First fixing block; 33. First hinge groove; 34. Second steel pipe; 35. Second clamping bolt; 36. First bearing; 37. Fastening bolt; 58. Second connecting plate; 59. Second fixing block; 50. Second bearing; 51. Second hinge groove. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1 - Appendix Figure 11 This application will be described in further detail.

[0034] Example 1: Example 1 discloses a connection structure for a large-span photovoltaic support system, such as... Figure 1 , Figure 2 As shown ( Figure 2 The solid arrow in the figure indicates the direction of horizontal wind load, while the dashed arrow indicates the direction of force deflection of the first photovoltaic panel 101. The large-span photovoltaic support connection structure includes a fulcrum cable 10, an auxiliary cable 20, a first buffer and damping component 1, and multiple photovoltaic panels arranged at intervals along the length of the fulcrum cable 10. The two ends of the fulcrum cable 10 and the auxiliary cable 20 are respectively fixed to rigid supports on the ground (not shown in the figure). The diameter of the fulcrum cable 10 is larger than the diameter of the auxiliary cable 20, and the tension of the fulcrum cable 10 is greater than the tension of the auxiliary cable 20. In this embodiment, the fulcrum cable 10 and the auxiliary cable 20 are located at the same horizontal position. In other embodiments, the fulcrum cable 10 and the auxiliary cable 20 are located at two different horizontal heights, with the auxiliary cable 20 higher than the fulcrum cable 10.

[0035] The photovoltaic panel is higher than the fulcrum cable 10. The photovoltaic panels located in the middle of the fulcrum cable 10 are named the first photovoltaic panel 101, and the photovoltaic panels located at the ends of the fulcrum cable 10 are named the second photovoltaic panel (not shown in the figure). The first photovoltaic panel 101 and the second photovoltaic panel are both set at an angle. The two sides of the second photovoltaic panel are fixed to the fulcrum cable 10 and the auxiliary cable 20 respectively by fasteners or clamps (not shown in the figure). The fastener of the second photovoltaic panel on the auxiliary cable 20 is larger in size, so that the side of the second photovoltaic panel on the auxiliary cable 20 is higher than the side of the second photovoltaic panel on the fulcrum cable 10, so that the second photovoltaic panel is in an inclined state.

[0036] In this embodiment, there is a gap between adjacent photovoltaic panels, that is, each photovoltaic panel is set independently.

[0037] like Figure 2 , Figure 3 As shown, the bottom of the first photovoltaic panel 101 has a frame 102, which can be made of wood or lightweight metal. The two sides of the frame 102 are respectively a first hinge side 1011 and a first free side 1012. The first hinge side 1011 is hinged to the fulcrum cable 10 via a first connecting assembly 3. Specifically, a first connecting plate 31 is fixed to the first hinge side 1011. The first connecting plate 31 has a first hinge groove 33, the bottom of which is semi-circular. The first connecting assembly 3 includes a second... The system includes a steel pipe 34, a first bearing 36, and a first fixing block 32. The inner diameter of the second steel pipe 34 is larger than the outer diameter of the fulcrum cable 10. The second steel pipe 34 is sleeved on the outside of the fulcrum cable 10. There is a radial gap between the second steel pipe 34 and the fulcrum cable 10. The second steel pipe 34 is threaded with a plurality of second clamping bolts 35. The second clamping bolts 35 extend radially along the second steel pipe 34. The ends of the second clamping bolts 35 press against the outer circumferential surface of the fulcrum cable 10 to achieve fixation between the second steel pipe 34 and the fulcrum cable 10.

[0038] like Figure 3 As shown, the inner ring of the first bearing 36 is fitted and fixed to the outside of the second steel pipe 34. The outer ring of the first bearing 36 is located in the first hinge groove 33. The end face of the first fixing block 32 is semi-circular. The end face of the first fixing block 32 and the bottom wall of the first hinge groove 33 together clamp and fix the outer ring of the first bearing 36. The first fixing block 32 is also fixed to the opening of the first hinge groove 33 by fastening bolts 37 to ensure the clamping stability.

[0039] like Figure 2 , Figure 4As shown, the first free side 1012 is inclined upward compared to the first hinge side 1011. The first free side 1012 is fixed with an arc-shaped first connecting arm 11. The first connecting arm 11 has an arc-shaped first mounting groove 15. The curvature center of the first mounting groove 15 coincides with the hinge center of the first hinge side 1011. The auxiliary cable 20 passes through the first mounting groove 15. The first buffer and shock absorption assembly 1 allows the first connecting arm 11 to perform elastically damped sliding motion relative to the auxiliary cable 20.

[0040] Specifically, the first buffer and shock absorption assembly 1 includes a first steel pipe 16, a first mounting block 12, a rubber block 13, and two first springs 14. The inner diameter of the first steel pipe 16 is larger than the outer diameter of the auxiliary cable 20. The first steel pipe 16 is sleeved on the outside of the auxiliary cable 20. There is a radial gap between the first steel pipe 16 and the auxiliary cable 20. Furthermore, the first steel pipe 16 is threaded with a plurality of first clamping bolts 17. The first clamping bolts 17 extend radially along the first steel pipe 16. The ends of the first clamping bolts 17 press against the outer circumferential surface of the auxiliary cable 20 to achieve the fixation between the first steel pipe 16 and the auxiliary cable 20.

[0041] The rubber block 13 is fitted and fixed to the first steel pipe 16. The two side walls of the rubber block 13 are respectively fitted to the arc-shaped groove wall of the first mounting groove 15. That is, the first mounting groove 15 and the rubber block 13 are in a damped sliding fit, and the inner wall of the first mounting groove 15 can be set as a rough surface.

[0042] The first mounting block 12 is inserted into the first mounting groove 15 through the opening of the first mounting groove 15. The first mounting block 12 is fixed to the opening of the first mounting groove 15 by fastening bolts 37. The first spring 14 extends along the arc direction of the first mounting groove 15. One end of the two first springs 14 is fixed to the bottom of the first mounting groove 15 and the end face of the first mounting block 12 respectively (this fixing method can be welding or other fixing structures). The other ends of the two first springs 14 abut against the two sides of the rubber block 13 respectively. Furthermore, the side of the rubber block 13 can also be provided with a groove (not shown in the figure). The end of the first spring 14 extends into the groove to improve the abutment stability.

[0043] Secondly, the cross-section of the first mounting groove 15 can be circular, which is adapted to the outer diameter shape of the first spring 14. The groove wall of the first mounting groove 15 will restrict the first spring 14 from detaching from the first mounting groove 15 along the axial direction of the auxiliary cable 20. The cross-section of the rubber block 13 can also be circular to fit the inner wall of the first mounting groove 15.

[0044] The implementation principle of Example 1 is as follows: When a horizontal wind load is applied to the first photovoltaic panel 101 located in the middle of the overall structure, the vertical component of the horizontal wind load applied to the first photovoltaic panel 101 is downward. This vertical component will force the first photovoltaic panel 101 to deflect around the fulcrum cable 10 at a certain angle. The first connecting arm 11 performs elastic damping sliding motion relative to the auxiliary cable 20, that is, the angle between the first photovoltaic panel 101 and the horizontal plane is reduced, so that the first photovoltaic panel 101 can adaptively adjust its tilt angle according to the magnitude of the horizontal wind load, thereby reducing the impact of the wind load on the stability of the overall structure.

[0045] Secondly, when a horizontal wind load is applied to the first photovoltaic panel 101 located in the middle of the overall structure, the first photovoltaic panel 101 will deflect at a certain angle around the fulcrum cable 10, which will amplify the displacement stroke of the first free side 1012 relative to the auxiliary cable 20. The large displacement stroke of the first connecting arm 11 relative to the auxiliary cable 20 will cause the first spring 14 to compress and rebound significantly, and the inner wall of the first mounting groove 15 to slide with large damping relative to the rubber block 13. The first spring 14 can buffer the vertical component force, and the rubber block 13 will convert the vibration kinetic energy into heat energy through frictional heat generation during the large stroke, so as to play an efficient shock absorption role, thereby reducing the impact effect of the vertical component force on the middle of the auxiliary cable 20, and further reducing the vertical swing frequency and amplitude of the middle position of the auxiliary cable 20, so as to greatly improve the stability of the overall structure.

[0046] Example 2: The difference between Example 2 and Example 1 is that, as Figure 5 , Figure 6 As shown ( Figure 6 The solid arrow in the middle indicates the direction of the horizontal wind load, and the two dashed arrows indicate the deflection directions of the first photovoltaic panel 101 and the guide plate 103, respectively. The large-span photovoltaic support connection structure also includes the guide plate 103 and the second buffer and shock absorption component 2. There are multiple guide plates 103. The guide plates 103 can be lightweight board structures such as aluminum thin plates, wood boards, and foam boards. The guide plates 103 are located between two adjacent first photovoltaic panels 101, that is, the guide plates 103 and the first photovoltaic panels 101 are arranged alternately along the length of the support cable 10.

[0047] like Figure 6 , Figure 7 As shown, the guide plate 103 is lower than the fulcrum cable 10. The two sides of the guide plate 103 are the second hinge side 1031 and the second free side 1032, respectively. The second hinge side 1031 is hinged to the fulcrum cable 10 through the second connecting component 5. The second free side 1032 is inclined downward compared to the second hinge side 1031. The second free side 1032 is fixed with a second connecting arm 21. The second connecting arm 21 is connected to the first steel pipe 16 of the auxiliary cable 20 through the second buffer and shock absorption component 2.

[0048] In this embodiment, the angles of inclination of the force guide plate 103 and the first photovoltaic plate 101 relative to the horizontal plane are equal, and the area of ​​the force-bearing surface of the force guide plate 103 is greater than or equal to the area of ​​the force-bearing surface of the first photovoltaic plate 101.

[0049] In other embodiments, the angle of inclination of the force guide plate 103 relative to the horizontal plane is greater than the angle of inclination of the first photovoltaic panel 101 relative to the horizontal plane, and the area of ​​the force-bearing surface of the force guide plate 103 is less than or equal to the area of ​​the force-bearing surface of the first photovoltaic panel 101.

[0050] The second connecting plate 51 is fixed on the second hinge side 1031. The second connecting plate 51 is provided with a second hinge groove 54. The bottom of the second hinge groove 54 is semi-circular. The second connecting assembly 5 includes a second bearing 53 and a second fixing block 52. The inner ring of the second bearing 53 is sleeved and fixed on the outside of the second steel pipe 34. That is, the adjacent second bearing 53 and the first bearing 36 are both sleeved and fixedly fitted with the same second steel pipe 34.

[0051] The outer ring of the second bearing 53 is located inside the second hinge groove 54. The end face of the second fixing block 52 is semi-circular. The end face of the second fixing block 52 and the bottom wall of the second hinge groove 54 together clamp and fix the outer ring of the second bearing 53. The second fixing block 52 is also fixed to the opening of the second hinge groove 54 by fastening bolts 37 to ensure clamping stability.

[0052] like Figure 6 , Figure 8 As shown, the second connecting arm 21 has an arc-shaped second mounting groove 24. The curvature center of the second mounting groove 24 coincides with the hinge center of the second hinge side 1031. The first steel pipe 16 passes through the second mounting groove 24. The second buffer damping assembly 2 allows the second connecting arm 21 to perform elastic damping sliding motion relative to the first steel pipe 16. Specifically, the second buffer damping assembly 2 includes a second mounting block 22 and two second springs 23. The two side walls of the rubber block 13 of the first buffer damping assembly 1 are respectively attached to the arc-shaped groove wall of the second mounting groove 24. That is, the same rubber block 13 is respectively attached to the groove wall of the first mounting groove 15 of the adjacent first connecting arm 11 and the second mounting groove 24 of the second connecting arm 21, and the second mounting groove 24 and the rubber block 13 are in a damping sliding fit.

[0053] The second mounting block 22 is inserted into the second mounting groove 24 through the groove opening of the second mounting groove 24, and the second mounting block 22 is fixed to the groove opening of the second mounting groove 24 by fastening bolts 37; the second spring 23 extends along the arc direction of the second mounting groove 24, and one end of the two second springs 23 is fixed to the bottom of the groove of the second mounting groove 24 and the end face of the second mounting block 22 respectively (this fixing method can be welding or other fixing structures), and the other end of the two second springs 23 abuts against the two sides of the rubber block 13 respectively.

[0054] Furthermore, a groove (not shown in the figure) can be provided on the side of the rubber block 13, and the end of the second spring 23 extends into the groove to improve the contact stability.

[0055] Secondly, the cross-section of the second mounting groove 24 can be circular, which is adapted to the outer diameter shape of the second spring 23. The groove wall of the second mounting groove 24 will restrict the second spring 23 from disengaging from the second mounting groove 24 along the axial direction of the auxiliary cable 20.

[0056] The implementation principle of Example 2 is as follows: By setting up a guide plate 103 and a first photovoltaic panel 101, when a horizontal wind load is applied to the first photovoltaic panel 101 and the guide plate 103 located in the middle of the overall structure, the direction of the vertical component of the horizontal wind load applied to the first photovoltaic panel 101 is downward. This vertical component will force the first photovoltaic panel 101 to deflect downward around the fulcrum cable 10, and the first connecting arm 11 will make an elastic damping sliding motion relative to the auxiliary cable 20; the direction of the vertical component of the horizontal wind load applied to the guide plate 103 is upward. This vertical component will force the guide plate 103 to deflect upward around the fulcrum cable 10, and the second connecting arm 21 will make an elastic damping sliding motion relative to the auxiliary cable 20. In the above process, the two vertical components are transmitted to the same first steel pipe 16 through the first spring 14 and the second spring 23 respectively. The two vertical components cancel each other out, thereby reducing the vertical vibration of the first steel pipe 16 and the auxiliary cable 20, and thus improving the stability of the auxiliary cable 20.

[0057] Furthermore, since the angle between the first photovoltaic panel 101 and the force guide plate 103 and the horizontal plane is reduced, the wind resistance of the overall structure is greatly reduced, thereby further reducing the impact of wind load on the stability of the overall structure.

[0058] Secondly, the first buffer and damping component 1 and the second buffer and damping component 2 can respectively buffer and dampen the angular deflection vibration of the first photovoltaic panel 101 and the force guide plate 103, thereby reducing the impact effect of the vertical component force on the middle part of the auxiliary cable 20, and further reducing the vertical swing frequency and amplitude of the middle part of the auxiliary cable 20, so as to greatly improve the stability of the overall structure.

[0059] Example 3: The difference between Example 3 and Example 2 is that, as Figure 9As shown, the first buffer and shock absorption assembly 1 also includes a first adjusting bolt 18, a first mounting block 12 that slides along the arc of the first mounting groove 15, a first inclined surface 121 at the end of the first mounting block 12 facing the opening of the second mounting groove 24, a first adjusting bolt 18 that is horizontally set, a first adjusting bolt 18 that is threadedly connected to the first connecting arm 11, and the end of the first adjusting bolt 18 that extends into the first mounting groove 15 to abut against the first inclined surface 121 of the first mounting block 12, thereby adjusting the position of the first mounting block 12 and the elastic force of the first spring 14 on the rubber block 13. In this way, the height position of the first connecting arm 11 relative to the auxiliary cable 20 can be adjusted to adjust the angle of the first photovoltaic panel 101 relative to the horizontal plane.

[0060] like Figure 10 As shown, the second buffer and shock absorption assembly 2 also includes a second adjusting bolt 25. The second mounting block 22 slides along the arc direction of the second mounting groove 24. The end of the second mounting block 22 facing the opening of the second mounting groove 24 is provided with a second inclined surface 221. The second adjusting bolt 25 is horizontally set and threadedly connected to the second connecting arm 21. The end of the second adjusting bolt 25 extends into the second mounting groove 24 to abut against the second inclined surface 221 of the second mounting block 22, thereby adjusting the position of the second mounting block 22 and the elastic force of the second spring 23 on the rubber block 13. In this way, the height position of the second connecting arm 21 relative to the auxiliary cable 20 can be adjusted to adjust the angle of the guide plate 103 relative to the horizontal plane.

[0061] Example 4: The difference between Example 4 and Example 2 is that, as Figure 11 As shown, an elastic rod 26 is fixed to the outer arc surface of the second connecting arm 21. The elastic rod 26 is parallel to the auxiliary cable 20. Two interlocking teeth 27 are fixed to the outer arc surface of the first connecting arm 11.

[0062] Under normal conditions (without horizontal wind load), one end of the elastic rod 26 engages with the meshing groove 28 between the two meshing teeth 27, so that the first connecting arm 11 and the second connecting arm 21 are temporarily fixed relative to each other.

[0063] When the horizontal wind load is small or the horizontal wind load is unstable, the downward and upward components of the horizontal wind load applied to the first photovoltaic panel 101 and the guide plate 103 can be transmitted in real time and cancel each other out through the fixed connection of the first connecting arm 11 and the second connecting arm 21, thereby reducing the vertical vibration of the overall structure and improving the stability of the overall structure.

[0064] When the horizontal wind load is large, it will force the first photovoltaic panel 101 and the guide plate 103 to deflect at an angle. At this time, the downward and upward components of the force are greater than the locking force of the elastic rod 26, causing the elastic rod 26 to deform elastically to avoid the biting teeth 27, that is, the first connecting arm 11 and the second connecting arm 21 to disengage. The first photovoltaic panel 101 and the guide plate 103 can deflect at an angle to reduce wind resistance.

[0065] When the horizontal wind load decreases, the elastic force of the first spring 14 and the second spring 23 forces the first photovoltaic panel 101 and the guide plate 103 to deflect and reset, so that the elastic rod 26 is re-engaged into the engagement groove 28 between the two engagement teeth 27, so that the first connecting arm 11 and the second connecting arm 21 are temporarily fixed relative to each other.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connection structure for a large-span photovoltaic support system, characterized in that: The assembly includes a fulcrum cable (10), an auxiliary cable (20), a first buffer and shock-absorbing component (1), a rubber block (13), a guide plate (103), a second buffer and shock-absorbing component (2), and multiple photovoltaic panels arranged at intervals along the length of the fulcrum cable (10). The photovoltaic panels are inclined. The photovoltaic panels located in the middle of the fulcrum cable (10) are named the first photovoltaic panel (101), and the photovoltaic panels located at the ends of the fulcrum cable (10) are named the second photovoltaic panels. The first photovoltaic panel (101) has a frame (102), and the two sides of the frame (102) are the first hinge sides (11). 011) and the first free side (1012), the first hinged side (1011) is hinged to the fulcrum cable (10) through the first connecting assembly (3), the first free side (1012) is inclined upward, the first free side (1012) is fixed with the first connecting arm (11), the first connecting arm (11) has an arc-shaped first mounting groove (15), the curvature center of the first mounting groove (15) coincides with the hinge center of the first hinged side (1011), the auxiliary cable (20) passes through the first mounting groove (15), the first buffer shock absorption assembly (1) allows The first connecting arm (11) performs elastic damping sliding motion relative to the auxiliary cable (20); the two sides of the second photovoltaic panel are respectively fixed to the fulcrum cable (10) and the auxiliary cable (20); the guide plate (103) is located between two adjacent first photovoltaic panels (101), the fulcrum cable (10) and the auxiliary cable (20) are located at the same horizontal position, the auxiliary cable (20) is sleeved and fixed with a first steel pipe (16), the two sides of the guide plate (103) are the second hinge side (1031) and the second free side (1032), the second hinge side (1031) and the fulcrum cable (1032) are respectively. The point cable (10) is hinged to the second connecting component (5). The second free side (1032) is inclined downward. The second free side (1032) is fixed with a second connecting arm (21). The second connecting arm (21) has an arc-shaped second mounting groove (24). The curvature center of the second mounting groove (24) coincides with the hinge center of the second hinge side (1031). The first steel pipe (16) passes through the second mounting groove (24). The second buffer and shock absorption component (2) allows the second connecting arm (21) to make elastic damping sliding motion relative to the first steel pipe (16).A rubber block (13) is fitted and fixed to the first steel pipe (16). The first buffer and shock absorption assembly (1) includes a first mounting block (12) and two first springs (14). The second buffer and shock absorption assembly (2) includes a second mounting block (22) and two second springs (23). The first mounting block (12) is detachably fixed to the opening of the first mounting groove (15), and the second mounting block (22) is detachably fixed to the opening of the second mounting groove (24). The sidewall of the rubber block (13) simultaneously fits against the arc-shaped groove walls of the first mounting groove (15) and the second mounting groove (24). The first springs... (14) Extending along the arc direction of the first mounting groove (15), the second spring (23) extends along the arc direction of the second mounting groove (24); one end of each of the two first springs (14) is fixed to the bottom of the first mounting groove (15) and the end face of the first mounting block (12), respectively, and the other end of each of the two first springs (14) abuts against the two sides of one end of the rubber block (13); one end of each of the two second springs (23) is fixed to the bottom of the second mounting groove (24) and the end face of the second mounting block (22), respectively, and the other end of each of the two second springs (23) abuts against the two sides of the other end of the rubber block (13).

2. The large-span photovoltaic support connection structure according to claim 1, characterized in that: The diameter of the fulcrum cable (10) is larger than the diameter of the auxiliary cable (20).

3. The large-span photovoltaic support connection structure according to claim 1, characterized in that: The tension of the fulcrum cable (10) is greater than the tension of the auxiliary cable (20).

4. The large-span photovoltaic support connection structure according to claim 1, characterized in that: The angles of inclination between the force guide plate (103) and the first photovoltaic panel (101) relative to the horizontal plane are equal, and the area of ​​the force-bearing surface of the force guide plate (103) is greater than or equal to the area of ​​the force-bearing surface of the first photovoltaic panel (101).

5. The large-span photovoltaic support connection structure according to claim 1, characterized in that: The angle of inclination of the force guide plate (103) relative to the horizontal plane is greater than the angle of inclination of the first photovoltaic panel (101) relative to the horizontal plane, and the area of ​​the force-bearing surface of the force guide plate (103) is less than or equal to the area of ​​the force-bearing surface of the first photovoltaic panel (101).

6. The large-span photovoltaic support connection structure according to claim 1, characterized in that: The first buffer shock absorber assembly (1) further includes a first adjusting bolt (18), the first mounting block (12) slides along the arc direction of the first mounting groove (15), and the first adjusting bolt (18) is used to fix the sliding position of the first mounting block (12); the second buffer shock absorber assembly (2) further includes a second adjusting bolt (25), the second mounting block (22) slides along the arc direction of the second mounting groove (24), and the second adjusting bolt (25) is used to fix the sliding position of the second mounting block (22).

7. The large-span photovoltaic support connection structure according to claim 1, characterized in that: The second connecting arm (21) is fixed with an elastic rod (26), and the first connecting arm (11) has two protruding teeth (27). The end of the elastic rod (26) engages with the meshing groove (28) between the two teeth (27), so that the first connecting arm (11) and the second connecting arm (21) are temporarily fixed relative to each other.

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