A flexible photovoltaic support system suitable for sloping roofs

Abstract

This invention relates to the field of photovoltaic (PV) support technology, specifically a flexible PV support suitable for sloping roofs. It includes mounting strips and connecting members that intersect the mounting strips. The connecting members are connected to the roof via fasteners. Multiple mounting strips are intersected to form a mounting frame for installing PV panels. Each mounting strip has a storage groove on its upper and lower surfaces. An elastic bladder is fixedly connected within the storage groove. This invention improves the stability of the PV panel on the roof by controlling the expansion of the elastic bladder to block the gap between the edge of the PV panel and the roof when the wind around the PV panel is strong, thus preventing airflow from entering the back of the PV panel. Conversely, when the wind around the PV panel is weak, the elastic bladder between the PV panel and the roof deflates, exposing the gap between the back of the PV panel and the roof, thus meeting the heat dissipation requirements of the PV panel.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic support technology, specifically a flexible photovoltaic support suitable for sloping roofs. Background Technology

[0002] Photovoltaic panels are commonly installed on buildings, most notably on exterior walls and roofs. Roof types include flat roofs and pitched roofs, with pitched roofs often constructed from stacked roof tiles. During installation, horizontal and vertical supports are stacked perpendicularly to form a mounting frame, which is then connected to the roof tiles using fasteners and other mounting components. The photovoltaic panels are then installed. While this method effectively secures the panels, gaps can form between the panels and roof tiles due to the intersecting supports and uneven roof surfaces. In strong winds, airflow through these gaps can generate upward forces, easily overturning the panels, causing them to detach and become damaged, leading to power generation system malfunctions and increased maintenance costs. To address wind resistance, fillers are often used to fill these gaps. However, in low wind and high temperatures, this filler can obstruct airflow, hindering heat dissipation from the panels and affecting their efficiency. In the long run, it may even shorten their lifespan. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention proposes a flexible photovoltaic support suitable for sloping roofs. When the wind around the photovoltaic panel is strong, the gap between the edge of the photovoltaic panel and the roof is blocked by an expanded elastic bladder, preventing airflow from entering the back of the photovoltaic panel and improving its stability on the roof. Conversely, when the wind around the photovoltaic panel is weak, the elastic bladder between the photovoltaic panel and the roof is deflated, exposing the gap between the back of the photovoltaic panel and the roof, thus meeting the heat dissipation requirements of the photovoltaic panel.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: A flexible photovoltaic support suitable for sloping roofs, comprising mounting strips and connecting members that cross-connect the mounting strips; the connecting members are connected to the roof by fasteners; multiple mounting strips are cross-connected to form a mounting frame for installing photovoltaic panels; both the upper and lower ends of the mounting strips are provided with storage grooves; an elastic bladder is fixedly connected inside the storage groove; the elastic bladder can expand under pressure and can deflate on its own; one end face of the mounting strip is recessed with a threaded hole, and the other end is protruding with a threaded joint; the threaded hole on one mounting strip is threadedly sealed to the threaded joint on another mounting strip; the depth of the threaded hole is greater than that of the threaded joint; the bottom of the threaded hole, the end face of the threaded joint, and the bottom of the storage groove on the same mounting strip are connected through a first air hole; a charging and discharging component is connected inside the threaded hole; the charging and discharging component can inflate and deflate the inside of the elastic bladder.

[0005] Preferably, the mounting strip has a stepped groove inside; one end of the stepped groove is connected to the end face of the threaded joint through a second straight hole, and the other end is connected to a first air hole; a straight rod is movably connected inside the second straight hole; the outer diameter of the straight rod is smaller than the inner diameter of the second straight hole, and the length of the straight rod is greater than the length of the second straight hole; a ball is abutted against the second straight hole at one end of the stepped groove by a first spring; the first spring is located inside the stepped groove; the ball is fixedly connected to the end of the straight rod; the first air hole at the bottom of the threaded hole is offset from the second straight hole on the threaded joint.

[0006] Preferably, the charging / discharging assembly is composed of a housing, fan blades, a main shaft, and a piston plate; the housing is connected to a threaded hole via a housing joint; a rotating groove is provided through the center of the housing; the two ends of the rotating groove pass through the housing via main holes; the main shaft passes through the main holes and is rotatably connected to the main holes; a cam is fixedly connected to the outer wall of the main shaft located within the rotating groove; drive grooves are provided inside the housing on both sides of the rotating groove; the drive grooves are connected to the rotating groove; the piston plate is slidably and sealingly connected within the drive groove; the piston plate divides the drive groove into a near groove close to the rotating groove and a far groove far from the rotating groove; the far groove is connected to the outer wall of the housing via a one-way air inlet, and the far groove is connected to the end of the housing joint via a one-way air outlet; the fan blades are connected to one end of the main shaft; there are four charging / discharging assemblies, located at the four positions of the photovoltaic panel, and each can independently control the elastic bladders on the four outermost mounting strips of the photovoltaic panel; the outer wall of the housing is connected to the end of the housing joint via a pressure relief hole; the side of the piston plate away from the cam is connected to the wall of the drive groove via a second spring.

[0007] Preferably, the main shaft extends out of the main hole at the end facing the airflow and is slidably fitted with the main sleeve; the anti-slip groove on the inner wall of the main sleeve is slidably connected to the anti-slip strip on the outer wall of the main shaft; the inner bottom wall of the main sleeve is connected to the end of the main shaft by a third spring; the fan blade is connected to the arc-shaped outer wall of the main sleeve; the outer wall of the housing is provided with an annular groove corresponding to the main sleeve; the end of the pressure relief hole is located in the annular groove; and the main sleeve can enter the annular groove.

[0008] Preferably, the spindle is rotatably sealed to the main bore; the rotating groove and the near groove are both filled with a medium.

[0009] Preferably, the spindle has a through-hole with internal threads; the adjusting bolt is connected to the adjusting hole by internal threads; one end of the third spring abuts against the inner bottom wall of the main sleeve, and the other end abuts against the adjusting bolt in the adjusting hole.

[0010] Preferably, the adjusting hole is threadedly sealed to the adjusting bolt; a gradient hole is provided through the inner bottom wall of the main sleeve facing outward; the diameter of the gradient hole decreases as it moves away from the adjusting bolt; and the main sleeve is slidably sealed to the main shaft.

[0011] Preferably, the end of the pressure relief hole is located on the arc-shaped inner wall of the annular groove; the arc-shaped outer wall of the main sleeve blocks the end of the pressure relief hole after entering the annular groove.

[0012] Preferably, the annular groove has an exhaust groove located on its arc-shaped inner wall away from the pressure relief hole; the gas in the annular groove is discharged along the exhaust groove during the entry of the main sleeve.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. This invention improves the stability of the photovoltaic panel on the roof by controlling the gap between the edge of the photovoltaic panel and the roof to be blocked by an expanded elastic bladder when the wind around the photovoltaic panel is strong, so that airflow cannot enter the back of the photovoltaic panel. In addition, when the wind around the photovoltaic panel is weak, the elastic bladder between the photovoltaic panel and the roof is deflated, so that the gap between the back of the photovoltaic panel and the roof is exposed, thus meeting the heat dissipation requirements of the photovoltaic panel.

[0015] 2. In this invention, the wind force in the four directions of the photovoltaic panel can independently drive the elastic bladders on the mounting strips in the four directions to expand, so as to ensure that the elastic bladder in one direction blocks the gap between the back of the photovoltaic panel and the roof, while the other edges of the photovoltaic panel remain exposed, thereby ensuring both the safety and heat dissipation of the photovoltaic panel.

[0016] 3. By turning the adjusting bolt, the sensitivity of the elastic bladder to shading of the gap between the back of the photovoltaic panel and the roof can be changed, thereby meeting different photovoltaic panel usage requirements. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a 3D view of the photovoltaic support system after the photovoltaic panels have been installed.

[0019] Figure 2 It is a perspective view of the present invention;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0022] Figure 5 This is a perspective view of a single mounting strip and the charging / discharging assembly in this invention;

[0023] Figure 6 yes Figure 5 A sectional view;

[0024] Figure 7This is a perspective view of the charging and discharging assembly in this invention;

[0025] Figure 8 yes Figure 7 A stereoscopic view from another angle;

[0026] Figure 9 yes Figure 7 A sectional view;

[0027] Figure 10 This is a diagram showing the location of the anti-slip grooves and anti-slip strips in the invention.

[0028] In the diagram: 1. Mounting strip, 11. Connector, 12. Storage slot, 13. Elastic bladder, 14. Threaded hole, 15. Threaded connector, 16. First air hole, 17. Stepped groove, 18. Second straight hole, 2. Photovoltaic panel, 3. Straight rod, 31. First spring, 32. Sphere, 4. Housing, 41. Housing connector, 42. Rotary groove, 43. Main hole, 44. Drive groove, 441. Near groove, 442. Far groove, 443. One-way air inlet, 444. One-way air outlet, 45. Pressure relief hole, 46. Annular groove, 47. Exhaust groove, 5. Fan blade, 6. Main shaft, 61. Cam, 62. Anti-slip strip, 63. Adjustment hole, 64. Adjustment bolt, 7. Piston plate, 71. Second spring, 8. Main sleeve, 81. Anti-slip groove, 82. Third spring, 83. Gradient hole. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] like Figures 1 to 10 As shown, the present invention includes the following embodiments:

[0031] Example 1: A flexible photovoltaic support for sloping roofs includes mounting strips 1 and connecting members 11 that are intersected by the mounting strips 1; the connecting members 11 are connected to the roof by fasteners (not shown in the figure); multiple mounting strips 1 are intersected to form a mounting frame (not labeled in the figure) for mounting photovoltaic panels 2; both the upper and lower ends of the mounting strips 1 are provided with storage grooves 12; an elastic bladder 13 is fixedly connected inside the storage groove 12; the elastic bladder 13 can expand under pressure and can deflate on its own; one end of the mounting strip 1... The mounting strip 1 has a recessed threaded hole 14 and a protruding threaded connector 15 at the other end; the threaded hole 14 on one of the mounting strips 1 is threadedly and sealed to the threaded connector 15 on the other mounting strip 1; the depth of the threaded hole 14 is greater than that of the threaded connector 15; the bottom of the threaded hole 14, the end face of the threaded connector 15, and the bottom of the storage groove 12 on the same mounting strip 1 are connected by a first air hole 16; the threaded hole 14 is connected to an inflation / deflation assembly (not labeled in the figure); the inflation / deflation assembly can inflate and deflate the inside of the elastic bladder 13.

[0032] In this embodiment, the mounting strip 1 has a stepped groove 17 inside; one end of the stepped groove 17 is connected to the end face of the threaded joint 15 through a second straight hole 18, and the other end is connected to a first air hole 16; a straight rod 3 is movably connected in the second straight hole 18; the outer diameter of the straight rod 3 is smaller than the inner diameter of the second straight hole 18, and the length of the straight rod 3 is greater than the length of the second straight hole 18; one end of the second straight hole 18 connected to the stepped groove 17 is connected to a ball 32 through a first spring 31; the first spring 31 is located in the stepped groove 17; the ball 32 is fixedly connected to the end of the straight rod 3; the first air hole 16 at the bottom of the threaded hole 14 is offset from the second straight hole 18 on the threaded joint 15.

[0033] Before installing the photovoltaic panel 2, the mounting strips 1 are assembled according to the specifications of the mounting frame. For example, if the length of the mounting strip 1 is required to be long, the threaded connector 15 of one mounting strip 1 is screwed into the threaded hole 14 of another mounting strip 1. The straight rod 3 protruding from the end face of the threaded connector 15 will be squeezed by the bottom of the threaded hole 14 inserted into the threaded connector 15. The first air hole 16 at the bottom of the threaded hole 14 is misaligned with the straight rod 3 in the second straight hole 18 on the threaded connector 15. In this way, during the pressure process of the support rod, the ball 32 will be driven to move in the stepped groove 17, so that the ball 32 overcomes the first spring 31 and moves away from the end of the second straight hole 18 near the stepped groove 17, so that the second straight hole 18 and the stepped groove 17 are aligned. 7. Maintain communication, ensuring the first air holes 16 inside the two connected mounting strips 1 remain connected. Then, connect the connector 11 to the roof using fasteners such as bolts. After the connector 11 is installed on the roof, connect the horizontal mounting strips 1 and the vertical mounting strips 1 together using the connector 11 to form a cross-shaped frame. Then, install the photovoltaic panel 2 on the frame. For ease of description, the outermost mounting strips 1 in the four directions of the photovoltaic panel 2 are referred to as the outer mounting strips 1. Connect the charging and discharging components to the threaded holes 14 on the outer mounting strips 1. As the photovoltaic panel 2 operates, it converts solar energy into electrical energy and stores it in the battery. When the wind speed around the photovoltaic panel 2 is less than the threshold, the charging and discharging module will not inflate the connected threaded hole 14. This prevents the elastic bladder 13 on the mounting strip 1 from expanding, ensuring that the gap between the edge of the photovoltaic panel 2 and the sloping roof is not blocked, thus exposing the back of the photovoltaic panel 2 to the air and achieving heat dissipation, thereby ensuring the working efficiency of the photovoltaic panel 2. When the wind speed around the photovoltaic panel 2 is greater than the threshold, to prevent the photovoltaic panel 2 from being blown away by the wind, the charging and discharging module will inflate the connected threaded hole 14. During the air intake process, gas will fill the threaded hole 14 connected to the charging and discharging module. Gas enters the storage compartment 12 through the first air hole 16 inside the connected mounting strip 1. As the air pressure in the storage compartment 12 increases, the elastic bladder 13 will expand under pressure. The elastic bladder 13 located on the lower surface of the mounting strip 1 will move closer to the roof surface after expansion and will eventually press against the roof surface. The elastic bladder 13 located on the upper surface of the mounting strip 1 will move closer to and press against the back of the photovoltaic panel 2 after expansion. In this way, the gap between the back of the photovoltaic panel 2 and the roof is blocked and sealed by the expanded elastic bladder 13. This makes it difficult for external gas to enter the gap between the roof and the back of the photovoltaic panel 2, making it less likely for the photovoltaic panel 2 on the roof to be blown away by the wind and improving the stability of the photovoltaic panel 2.Furthermore, during the expansion of the elastic bladders 13 on the intersecting mounting strips 1, the intersection points cannot expand, while the expansion of the elastic bladders 13 at other points limits the movement of the two intersecting mounting strips 1, making them less prone to displacement and improving the connection strength and stability of the mounting strips 1. Since the straight rod 3 at the exposed end of the mounting strip 1 extends into the corresponding second straight hole 18, the end of the second straight hole 18 at the end of the mounting strip 1 near the corresponding stepped groove 17 is blocked by the ball 32, achieving a seal at the end of the mounting strip 1. This allows the first air... There will be no gas leakage in the hole 16; when the wind level around the photovoltaic panel 2 is less than the threshold, the charging and discharging module will stop charging the first vent 16. The charging and discharging module can leak air, and the gas in the storage slot 12 will enter the charging and discharging module through the first vent 16 to achieve leakage. The elastic bladder 13 will deflate and tighten under its own elastic force. The gas inside the elastic bladder 13 will be discharged during the contraction of the elastic bladder 13. After the elastic bladder 13 deflates, the gap between the back of the photovoltaic panel 2 and the roof will be exposed again to meet the heat dissipation requirements of the photovoltaic panel 2.

[0034] This invention improves the stability of the photovoltaic panel 2 on the roof by controlling the gap between the edge of the photovoltaic panel 2 and the roof to be blocked by an expanded elastic bladder 13 when the wind around the photovoltaic panel 2 is strong, so that airflow cannot enter the back of the photovoltaic panel 2. In addition, when the wind around the photovoltaic panel 2 is weak, the elastic bladder 13 between the photovoltaic panel 2 and the roof is deflated, so that the gap between the back of the photovoltaic panel 2 and the roof is exposed, thus meeting the heat dissipation requirements of the photovoltaic panel 2.

[0035] Example 2: The charging and discharging assembly is composed of a housing 4, a fan blade 5, a main shaft 6, and a piston plate 7. The housing 4 is threadedly connected to the threaded hole 14 via a housing joint 41. A rotating groove 42 is provided through the center of the housing 4. The two ends of the rotating groove 42 pass through the housing 4 via main holes 43. The main shaft 6 passes through the main hole 43 and is rotatably connected to the main hole 43. A cam 61 is fixedly connected to the outer wall of the main shaft 6 located in the rotating groove 42. Drive grooves 44 are provided inside the housing 4 on both sides of the rotating groove 42. The drive grooves 44 are connected to the rotating groove 42. The piston plate 7 is slidably and sealingly connected in the drive groove 44. The piston plate 7 drives the drive groove 44. The structure is divided into a near groove 441 close to the rotating groove 42 and a far groove 442 far from the rotating groove 42; the far groove 442 is connected to the outer wall of the housing 4 through a one-way air inlet 443, and the far groove 442 is connected to the end of the shell connector 41 through a one-way air outlet 444; the fan blade 5 is connected to one end of the main shaft 6; there are four charging and discharging components, located at the four positions of the photovoltaic panel 2, and each can independently control the elastic bladder 13 on the four outermost mounting strips 1 of the photovoltaic panel 2; the outer wall of the housing 4 is connected to the end of the shell connector 41 through a pressure relief hole 45; the side of the piston plate 7 away from the cam 61 is connected to the groove wall of the drive groove 44 through a second spring 71.

[0036] In this embodiment, the main shaft 6 extends out of the main hole 43 at the end facing the airflow and is slidably fitted with the main sleeve 8; the anti-slip groove 81 on the inner wall of the main sleeve 8 is slidably connected to the anti-slip strip 62 on the outer wall of the main shaft 6; the inner bottom wall of the main sleeve 8 is connected to the end of the main shaft 6 by a third spring 82; the fan blade 5 is connected to the arc-shaped outer wall of the main sleeve 8; the outer wall of the housing 4 is provided with an annular groove 46 corresponding to the main sleeve 8; the end of the pressure relief hole 45 is located in the annular groove 46; the main sleeve 8 can enter the annular groove 46.

[0037] Another embodiment of the charging / discharging assembly is an air pump.

[0038] The photovoltaic panel 2 is equipped with charging and discharging components in all four directions. These components independently control the elastic bladders 13 on the mounting strips 1 in each of the four directions. Taking a wind direction from left to right as an example, for ease of explanation, the charging and discharging components facing the four directions are referred to as the left-facing charging and discharging component, the rear-facing charging and discharging component, the right-facing charging and discharging component, and the front-facing charging and discharging component. Since the wind direction is from left to right, only the fan blades 5 on the left-facing charging and discharging component will rotate to drive the main sleeve 8 closer to the corresponding housing 4. The anti-slip groove 81 on the inner wall of the main sleeve 8 slides against the anti-slip strip 62 on the outer wall of the main shaft 6. As the main sleeve 8 approaches the housing 4, it overcomes the elastic force of the third spring 82. As the end of the main sleeve 8 approaches the housing 4, it enters the annular groove 46. The pressure relief hole 45 is blocked. As the fan blade 5 rotates, the main sleeve 8 and the main shaft 6 will rotate. During the rotation of the main shaft 6, the cam 61 on the outer wall will rotate. During the rotation of the cam 61, the piston plate 7 will be intermittently squeezed away from the main shaft 6. As the cam 61 moves from the rotating groove 42 into the near groove 441, it will squeeze the piston plate 7. The piston plate 7, under pressure, will overcome the second spring 71 and move away from the main shaft 6. This makes the space of the corresponding far groove 442 smaller. The gas in the space of the far groove 442 will be compressed and flow into the threaded hole 14 on the mounting strip 1 along the one-way vent 444. Since the pressure relief hole 45 is blocked, the gas cannot be leaked out. The gas will enter the storage groove 12 along the first vent 16. The cam 61 continues to... Rotation causes the piston plate 7 to be intermittently compressed. Without the compression of the cam 61, the second spring 71 pushes the piston plate 7 closer to the main shaft 6, thus increasing the space within the distal slot 442 and creating negative pressure. External gas enters the distal slot 442 through the one-way air inlet 443, replenishing the gas in the distal slot 442 and preparing for the next compression and injection. This causes the elastic bladder 13 on the mounting strip 1, which connects to the left-side charging / discharging assembly, to expand, preventing airflow from left to right from passing through the expanded elastic bladder 13 to enter the inner side of the photovoltaic panel 2, thus protecting the photovoltaic panel 2. For charging / discharging assemblies in other directions, even with the fan blade 5 rotating, the fan blade 5 cannot move. The main sleeve 8 blocks the corresponding pressure relief hole 45. Even if the inside of the elastic bladder 13 is inflated, the pressure relief hole 45 will release pressure, ensuring that the elastic bladder 13 in other directions of the photovoltaic panel 2 does not bulge. This allows the other edges of the photovoltaic panel 2 to maintain heat dissipation, thus balancing the safety and heat dissipation of the photovoltaic panel 2. Finally, as the wind speed decreases from left to right, the main sleeve 8 moves out of the annular groove 46 under the elastic force of the third spring 82, releasing the obstruction of the pressure relief hole 45. This allows the airflow inside the inflated elastic bladder 13 to be smoothly discharged along the pressure relief hole 45, causing the inflated elastic bladder 13 to deflate. This creates a gap between the left edge of the photovoltaic panel 2 and the roof again, ensuring the heat dissipation requirements of the photovoltaic panel 2.

[0039] Example 3: The main shaft 6 is rotatably sealed to the main hole 43; the rotating groove 42 and the near groove 441 are both filled with medium.

[0040] As the cam 61 rotates with the main shaft 6, it pushes one of the piston plates 7 away from the main shaft 6, overcoming the elastic force of the corresponding second spring 71. This causes the space of the near groove 441 corresponding to the piston plate 7 to expand, creating a negative pressure. The liquid medium in the rotating groove 42 and the other near groove 441 will enter the expanded near groove 441, thus reducing the space in the other near groove 441. This means that each time the cam 61 pushes one of the piston plates 7, it will cause one near groove 441 to expand and the other near groove 441 to shrink. This allows the other piston plate 7 to quickly reset when one piston plate 7 is pushed, enabling the far groove 442 to reset in time and draw in external gas. This improves the gas injection efficiency of the inflation assembly to the elastic bladder 13 on the mounting strip 1.

[0041] Example 4: The main shaft 6 has an adjustment hole 63 with internal threads through its center; the adjustment hole 63 is internally threaded and connected to an adjustment bolt 64; one end of the third spring 82 abuts against the inner bottom wall of the main sleeve 8, and the other end abuts against the adjustment bolt 64 inside the adjustment hole 63.

[0042] In this embodiment, the adjusting hole 63 is threadedly sealed to the adjusting bolt 64; a gradient hole 83 is provided through the inner bottom wall of the main sleeve 8 facing outward; the diameter of the gradient hole 83 decreases as it moves away from the adjusting bolt 64; the main sleeve 8 is slidably sealed to the main shaft 6.

[0043] Before activating the charging and discharging assembly, first tighten the adjusting bolt 64. Tightening the adjusting bolt 64 changes its position within the adjusting hole 63. The main sleeve 8 and the main shaft 6 slide in a seal but do not disengage, thus controlling the compression degree of the third spring 82. When the third spring 82 is compressed to a greater degree, the resistance to the main sleeve 8 entering the annular groove 46 is greater, requiring a larger wind force for the main sleeve 8 to enter the annular groove 46 and block the pressure relief hole 45 within the annular groove 46. This requires a larger wind force for the elastic bladder 13 to expand and pressurize the back of the photovoltaic panel 2. The gap between the roof and the roof is blocked; similarly, if the compression of the third spring 82 is small, the resistance of the main sleeve 8 entering the annular groove 46 is small, so that the main sleeve 8 needs a small wind force to enter the annular groove 46 and block the pressure relief hole 45 in the annular groove 46, so that the elastic bladder 13 needs a small wind force to expand and block the gap between the back of the photovoltaic panel 2 and the roof; thus, by turning the adjusting bolt 64, the sensitivity of the elastic bladder 13 to blocking the gap between the back of the photovoltaic panel 2 and the roof can be changed, thereby meeting the different usage requirements of the photovoltaic panel 2;

[0044] When the fan blade 5 is subjected to wind, it will cause the main sleeve 8 to rotate and move closer to the corresponding housing 4. As the main sleeve 8 moves closer to the housing 4, the gas inside the main sleeve 8 will be discharged along the gradient hole 83. The diameter of the gradient hole 83 decreases as it moves away from the adjusting bolt 64. Therefore, the speed at which the gas inside the main sleeve 8 is discharged along the gradient hole 83 is less than the speed at which the outside gas enters the main sleeve 8 along the gradient hole 83. As a result, the main sleeve 8 can be more easily subjected to wind force to enter the annular groove 46 and block the pressure relief hole 45. When the wind force suddenly weakens, the outside gas enters the main sleeve 8 along the gradient hole 83 at a slower speed, so that the main sleeve 8 will move out of the annular groove 46 more slowly and move away from the opening of the pressure relief hole 45 at a slower speed. This ensures that the pressure relief hole 45 will not be exposed when the wind force suddenly decreases, so as to ensure that the inflation and deflation assembly can smoothly inflate the inside of the elastic bladder 13.

[0045] Example 5: The end of the pressure relief hole 45 is located on the arc-shaped inner wall of the annular groove 46; the arc-shaped outer wall of the main sleeve 8 blocks the end of the pressure relief hole 45 after entering the annular groove 46.

[0046] In this embodiment, an exhaust groove 47 is provided on the arc-shaped inner wall of the annular groove 46 away from the pressure relief hole 45; the gas in the annular groove 46 is discharged along the exhaust groove 47 during the entry of the main sleeve 8.

[0047] As the fan blade 5, driven by the wind, propels the main sleeve 8 into the annular groove 46, the gas inside the annular groove 46 is compressed and discharged along the exhaust groove 47. The main sleeve 8 blocks the pressure relief hole 45 on the arc-shaped inner wall of the annular groove 46. Thus, as the main sleeve 8 rotates with the fan blade 5, the blocking effect of the pressure relief hole 45 is not affected. The opening of the pressure relief hole 45 is perpendicular to the arc-shaped outer wall of the main sleeve 8, so it does not give the main sleeve 8 a thrust away from the shell 4, ensuring the blocking effect of the pressure relief hole 45 by the main sleeve 8, making inflation smoother.

[0048] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible photovoltaic support structure suitable for sloping roofs, comprising mounting strips and connectors for intersecting the mounting strips; the connectors are connected to the roof by fasteners; multiple mounting strips are intersected to form a mounting frame for mounting photovoltaic panels; characterized in that: Both the upper and lower ends of the mounting strip are provided with storage slots; an elastic bladder is fixedly connected inside the storage slots; one end of the mounting strip is provided with a threaded hole, and the other end is provided with a threaded connector; the threaded hole on one mounting strip is threadedly sealed to the threaded connector on the other mounting strip; the bottom of the threaded hole, the end face of the threaded connector, and the bottom of the storage slot on the same mounting strip are connected through a first air hole; the threaded hole is connected to an inflation / deflation assembly; the inflation / deflation assembly can inflate and deflate the inside of the elastic bladder; The mounting strip has a stepped groove inside; one end of the stepped groove is connected to the end face of the threaded joint through a second straight hole, and the other end is connected to the first air hole; a straight rod is movably connected in the second straight hole; the second straight hole is connected to the stepped groove through a first spring and abuts against a ball; the ball is fixedly connected to the end of the straight rod. The charging and discharging assembly is composed of a housing, fan blades, a main shaft, and a piston plate. The housing is connected to a threaded hole via a housing joint and a threaded seal. A rotating groove is provided through the center of the housing. The two ends of the rotating groove pass through the housing via main holes. The main shaft passes through the main holes and is rotatably connected to them. A cam is fixed to the outer wall of the main shaft inside the rotating groove. Drive grooves are provided inside the housing on both sides of the rotating groove. The drive grooves are connected to the rotating groove. The piston plate is elastically and slidably sealed within the drive groove. The piston plate divides the drive groove into a near groove close to the rotating groove and a far groove far from the rotating groove. The far-end slot is connected to the outer wall of the housing through a one-way air inlet, and the far-end slot is connected to the end of the housing connector through a one-way air outlet; the fan blade is connected to one end of the main shaft; there are four charging and discharging components, which are located at the four positions of the photovoltaic panel and can independently control the elastic bladders on the four outermost mounting strips of the photovoltaic panel; the outer wall of the housing and the end of the housing connector are connected through a pressure relief hole.

2. A flexible photovoltaic support system suitable for sloping roofs according to claim 1, characterized in that: The main shaft extends out of the main hole at the windward end and is slidably fitted with the main sleeve; the inner bottom wall of the main sleeve is connected to the end of the main shaft by a third spring; the fan blade is connected to the arc-shaped outer wall of the main sleeve; the outer wall of the housing is provided with an annular groove corresponding to the main sleeve; the end of the pressure relief hole is located in the annular groove.

3. A flexible photovoltaic support system suitable for sloping roofs according to claim 1, characterized in that: The spindle and the main bore are connected by a rotating seal; the rotating groove and the near groove are filled with a medium.

4. A flexible photovoltaic support system suitable for sloping roofs according to claim 2, characterized in that: The spindle has a threaded adjustment hole through its center; the adjustment hole is connected to an adjustment bolt; one end of the third spring rests against the inner bottom wall of the main sleeve, and the other end rests against the adjustment bolt inside the adjustment hole.

5. A flexible photovoltaic support system suitable for sloping roofs according to claim 4, characterized in that: The adjusting hole is threaded and sealed to the adjusting bolt; a gradual hole is provided through the inner bottom wall of the main sleeve facing outward; the diameter of the gradual hole decreases as it moves away from the adjusting bolt; the main sleeve is slidably sealed to the main shaft.

6. A flexible photovoltaic support system suitable for sloping roofs according to claim 2, characterized in that: The end of the pressure relief hole is located on the arc-shaped inner wall of the annular groove; the arc-shaped outer wall of the main sleeve blocks the end of the pressure relief hole after entering the annular groove.

7. A flexible photovoltaic support system suitable for sloping roofs according to claim 6, characterized in that: An exhaust groove is provided on the arc-shaped inner wall of the annular groove, away from the pressure relief hole; the gas in the annular groove is discharged along the exhaust groove during the entry of the main sleeve.

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