A long-span flexible photovoltaic support with a flexible transverse connection system

Abstract

This invention relates to the field of solar photovoltaic (PV) support technology, and proposes a large-span flexible PV support system with a flexible lateral connection system. The system includes PV cable frames, rigid connecting frames, and flexible connecting cables, with multiple PV cable frames arranged parallel and spaced apart. The rigid connecting frames are respectively fixedly installed between the PV cable frames located at both ends of the multiple PV cable frames and their adjacent PV cable frames. This invention, by using rigid connecting frames and flexible connecting cables, connects multiple PV cable frames in a rigid-flexible combination. This not only maintains the overall spatial structure characteristics of the flexible PV support system, allowing it to adapt to various complex environments, but also provides good support for the PV cable frames at the ends, improving the overall wind resistance of the PV support system. Furthermore, it facilitates the installation of the flexible connecting cables and rigid connecting frames, reducing installation difficulty.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic support technology, and in particular to a large-span flexible photovoltaic support with a flexible lateral connection system. Background Art

[0002] In photovoltaic (PV) power generation systems, PV mounting systems, as key structures supporting PV modules, directly affect the power generation efficiency and operation and maintenance costs of PV power plants through their performance and adaptability. While traditional rigid PV mounting systems meet the basic requirements of PV power generation to some extent, their limitations become increasingly apparent under conditions such as complex terrain, scarce land resources, and special installation environments. To address this issue, flexible PV mounting systems have emerged.

[0003] Chinese patent application CN113904616A discloses a flexible photovoltaic (PV) support system, comprising: multiple first support components spaced apart along a first direction; multiple cable assemblies sequentially arranged between the first support components, each cable assembly having multiple PV modules mounted on it; a lower chord located below the cable assemblies, extending in the same direction as the cable assemblies and forming an inverted arch structure bulging towards the cable assemblies, the lower chord being positioned between adjacent first support components; and multiple frames connecting the lower chord to the cable assemblies. The lower chord provides downward tension to the cable assemblies through the frames, enabling the flexible PV support system to maintain good performance under upward wind loads. The pre-camber of the lower chord can be adjusted by changing the applied prestress to alter the magnitude of the downward tension on the cable assemblies, thereby improving the stability of the flexible PV support system under upward wind loads.

[0004] In the above technical solution, in order to enhance the wind resistance of the flexible photovoltaic support, a transverse connection system composed of connecting cables, first cross cables, and second cross cables is set up to connect multiple cable components. However, the multiple cable components located in the middle position have connecting cables, first cross cables, and second cross cables installed on both sides, while the two cable components located at the ends only have connecting cables, first cross cables, and second cross cables installed on one side. This results in the two cable components located at the ends receiving relatively poor support, posing a risk of overall or partial overturning and reducing the overall wind resistance of the flexible photovoltaic support. Summary of the Invention

[0005] In view of this, the present invention proposes a large-span flexible photovoltaic support system with a flexible lateral connection system, which can improve the support effect of the photovoltaic cable frame at the end position and effectively improve the overall wind resistance performance of the flexible photovoltaic support system.

[0006] The technical solution of this invention is implemented as follows: This invention provides a large-span flexible photovoltaic support structure with a flexible lateral connection system, comprising a photovoltaic cable frame, a rigid connecting frame, and flexible connecting cables, wherein...

[0007] At least four photovoltaic cable frames are provided, and the photovoltaic cable frames are arranged in parallel and at intervals.

[0008] The rigid connecting frame is fixedly installed between the photovoltaic cable frame located at both ends of the plurality of photovoltaic cable frames and the adjacent photovoltaic cable frame;

[0009] The flexible connecting cable is fixedly installed between the multiple photovoltaic cable frames that are not located at both ends of the multiple photovoltaic cable frames.

[0010] Based on the above technical solutions, preferably, a plurality of the photovoltaic cable frames are arranged along the width direction of the photovoltaic cable frames;

[0011] Multiple sets of both the rigid connecting frame and the flexible connecting cable are provided, and the multiple sets of the rigid connecting frame and the multiple sets of the flexible connecting cable are arranged parallel to each other and spaced apart along the length direction of the photovoltaic cable frame;

[0012] Each group of rigid connecting frames is provided with two, and the two rigid connecting frames in the same group are respectively connected to two photovoltaic cable frames located at both ends of the plurality of photovoltaic cable frames.

[0013] More preferably, the system also includes multiple reinforcing frames, which are fixedly disposed between two adjacent rigid connecting frames, and the multiple reinforcing frames located at the same end of the flexible connecting cable are arranged in a zigzag pattern.

[0014] Based on the above technical solutions, preferably, it also includes an anti-loosening mechanism. The two ends of the flexible connecting cable are respectively fixedly connected to two photovoltaic cable frames located at their two ends. The flexible connecting cable is slidably connected to a plurality of photovoltaic cable frames located at its middle position. The anti-loosening mechanism is sleeved on the flexible connecting cable and is used to tighten the flexible connecting cable.

[0015] More preferably, the anti-loosening mechanism includes a body, a fine-adjustment wheel, and a fixing component, wherein,

[0016] The machine body is provided with an inlet and an outlet, and the flexible connecting cable is slidably disposed within the inlet and outlet;

[0017] The fine-tuning wheel is rotatably mounted inside the machine body, and multiple cable grooves are provided on its circumference. The cable grooves are arc-shaped structures, and their centers are located on the rotation axis of the fine-tuning wheel. The distances from the multiple cable grooves to the rotation axis of the fine-tuning wheel are different, and the flexible connecting cable is abutted and disposed in one of the cable grooves.

[0018] The fastener is connected to the fine-tuning wheel by a threaded connection and abuts against the body.

[0019] More preferably, the fine-tuning wheel has multiple threaded holes, which are arranged circumferentially around the rotation axis of the fine-tuning wheel;

[0020] The machine body is provided with an arc groove, the length of which is greater than the sum of the distance between two adjacent threaded holes and the inner diameter of the threaded hole. Two fasteners are provided, and each is provided in one of the threaded holes.

[0021] More preferably, there are two fine-tuning wheels, the flexible connecting cable abuts against one of the cable grooves on each fine-tuning wheel, and the rotation axes of the two fine-tuning wheels coincide;

[0022] The anti-loosening mechanism also includes two gear discs and multiple gears, wherein...

[0023] The two gear discs are respectively fixedly mounted on the two fine-tuning wheels;

[0024] The gear is rotatably mounted on the machine body and located between the two gear discs, and the gear meshes with the two gear discs.

[0025] Based on the above technical solutions, preferably, the anti-loosening mechanism further includes two guide wheels, which are rotatably disposed within the machine body. The flexible connecting cable is abutted against the periphery of the guide wheels, and the two guide wheels and the fine-tuning wheel are respectively disposed on both sides of the flexible connecting cable.

[0026] More preferably, the anti-loosening mechanism further includes a traction block, which is slidably fixed on the body and abuts against the flexible connecting cable.

[0027] Based on the above technical solutions, preferably, the photovoltaic cable frame includes two uprights, two fixing cables, a load-bearing cable, and multiple locking frames, wherein,

[0028] Both ends of the fixed cable and both ends of the load-bearing cable are respectively fixedly installed on the two uprights, and the center lines of the two fixed cables and the center line of the load-bearing cable are not coplanar;

[0029] The locking frame is fixedly installed between the two fixed cables and the load-bearing cable, and both the rigid connecting frame and the flexible connecting cable are installed on the locking frame.

[0030] The large-span flexible photovoltaic support system of the present invention, with its flexible lateral connection system, has the following advantages over the prior art:

[0031] (1) By setting up rigid connecting frames and flexible connecting cables, multiple photovoltaic cable frames are connected by a combination of rigid and flexible methods. This not only maintains the overall spatial structure characteristics of the flexible photovoltaic support and allows it to adapt to various complex environments, but also provides good support for the photovoltaic cable frames at the ends, improving the overall wind resistance of the photovoltaic support. At the same time, it also facilitates the installation of flexible connecting cables and rigid connecting frames, reducing the difficulty of installation.

[0032] (2) By setting fine adjustment wheel and traction block in the anti-loosening mechanism, the tension of the flexible connecting cable can be adjusted quickly and accurately to ensure the normal use of the flexible connecting cable. By setting multiple cable grooves to be arc-shaped, the influence of slight rotation of fine adjustment wheel on the tension of the flexible connecting cable can be eliminated, thereby reducing the adjustment error of the anti-loosening mechanism.

[0033] (3) By setting multiple threaded holes and limiting the length of the arc groove, it is possible not only to ensure that the fine adjustment wheel can rotate fully, but also to ensure the structural strength of the machine body. By setting two fine adjustment wheels, a toothed disc and a gear, it is possible not only to ensure the continuity of adjacent cable grooves, but also to increase the adjustment range of the anti-loosening mechanism. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a top view of a large-span flexible photovoltaic support structure with a flexible lateral connection system according to the present invention.

[0036] Figure 2 This is a partial perspective view of a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0037] Figure 3 This is a perspective view of the rigid connecting frame in a large-span flexible photovoltaic support system with a flexible lateral connection system according to the present invention.

[0038] Figure 4 This is a cross-sectional view of the anti-loosening mechanism in the first state of a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0039] Figure 5 This is a cross-sectional view of the anti-loosening mechanism in a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention, in the second state.

[0040] Figure 6 This is a perspective view of the fine-tuning wheel in a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0041] Figure 7 This is a cross-sectional view of a fine-tuning wheel in a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0042] Figure 8 This is a perspective view of the anti-loosening mechanism in a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0043] Figure 9 This is a perspective view of the fixing component in a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0044] Figure 10 This is a perspective view of the gear in a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0045] Figure 11 This is a side view of the anti-loosening mechanism in a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0046] Figure 12 This is a side view of the locking frame in a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention.

[0047] The components include: 1. Photovoltaic cable frame; 11. Frame; 12. Fixing cable; 13. Load-bearing cable; 14. Locking frame; 2. Rigid connecting frame; 3. Flexible connecting cable; 4. Reinforcing frame; 5. Anti-loosening mechanism; 51. Body; 52. Fine-tuning wheel; 53. Fixing component; 54. Gear disc; 55. Gear; 56. Guide wheel; 57. Pulling block; 501. Cable inlet; 502. Cable outlet; 503. Cable groove; 504. Threaded hole; 505. Arc groove. Detailed Implementation

[0048] The technical solutions of this invention will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0049] like Figures 1-12 As shown, a large-span flexible photovoltaic support with a flexible lateral connection system according to the present invention includes a photovoltaic cable frame 1, a rigid connecting frame 2, a flexible connecting cable 3, multiple reinforcing frames 4, and an anti-loosening mechanism 5.

[0050] like Figure 2 and Figure 12 As shown, the photovoltaic cable frame 1 includes two uprights 11, two fixing cables 12, one load-bearing cable 13, and multiple locking frames 14. Both the fixing cables 12 and the load-bearing cable 13 are flexible steel wire ropes. The two ends of the fixing cable 12 and the two ends of the load-bearing cable 13 are respectively fixed on the two uprights 11. After the two fixing cables 12 are tightened, the photovoltaic panel is installed between the two fixing cables 12. The flexible support of the fixing cables 12 can make the photovoltaic support adaptable to special installation environments such as complex terrain and scarce land resources. The two fixing cables 12 are set at different heights, so that the photovoltaic panel can form a certain tilt angle with the horizontal plane to better adapt to the incident angle of sunlight and improve the power generation efficiency of the photovoltaic system.

[0051] The load-bearing cable 13 and the locking frame 14 are used to improve the fixation stability and wind resistance of the two fixed cables 12. The center line of the load-bearing cable 13 is not coplanar with the center lines of the two fixed cables 12. The locking frame 14 is fixedly installed between the two fixed cables 12 and the load-bearing cable 13. The locking frame 14 has a triangular structure. Utilizing the stability of the locking frame 14, it can provide more stable support for the two fixed cables 12 and the load-bearing cable 13, thereby enhancing their wind resistance and avoiding risks such as damage to the photovoltaic panels or deformation of the support due to excessive wind force.

[0052] In remote areas such as mountainous regions and islands, or other areas suitable for installing photovoltaic power generation systems, a large number of photovoltaic support structures need to be laid to fully utilize solar energy resources and achieve efficient power generation. For example... Figure 1 As shown, in this environment, multiple photovoltaic cable frames 1 need to be installed, arranged parallel and spaced apart. To improve the interconnectivity of the multiple photovoltaic cable frames 1 and enhance the overall wind resistance of the photovoltaic support system, it is necessary to connect the multiple photovoltaic cable frames 1 using relevant components. Currently, there are two ways to connect multiple photovoltaic cable frames 1. The first method is to use steel structures to connect the multiple photovoltaic cable frames 1, which is a rigid connection. Although this method has high structural stability and can withstand large wind forces and other external forces, it consumes a lot of materials and is difficult to install. It requires not only a large amount of steel but also a professional construction team and mechanical equipment, resulting in poor terrain adaptability. The second method is to use steel wire ropes to connect the multiple photovoltaic cable frames 1, which is a flexible connection. Although this method is easy to install and has good terrain adaptability, however, as... Figure 1 As shown, the photovoltaic cable frames 1 located in the middle are equipped with steel wire ropes on both sides, while the two photovoltaic cable frames 1 located at the upper and lower ends are equipped with steel wire ropes on only one side. When the steel wire rope is under stress, the two photovoltaic cable frames at the two ends are subjected to uneven stress, which makes them more prone to overturning and affects the overall wind resistance performance of the photovoltaic support.

[0053] For large-span flexible photovoltaic (PV) supports, to improve their terrain adaptability and ensure their overall wind resistance, this invention utilizes a rigid-flexible connection method to link multiple PV cable frames 1. This connection method is applicable to PV supports with at least four PV cable frames 1. Rigid connecting frames 2 are fixedly installed between the PV cable frames 1 located at both ends of the multiple PV cable frames 1 and their adjacent PV cable frames 1. Flexible connecting cables 3 are fixedly installed between the multiple PV cable frames 1 not located at both ends of the multiple PV cable frames 1, such as... Figure 1 As shown in the figure, there are eight photovoltaic cable frames 1. The two photovoltaic cable frames 1 at the top are connected by rigid connecting frames 2, and the two photovoltaic cable frames 1 at the bottom are connected by rigid connecting frames 2. The six photovoltaic cable frames 1 in the middle are connected by flexible connecting cables 3. This combination of rigid and flexible methods can not only improve the support effect of the photovoltaic cable frames 1 at the ends and enhance the overall wind resistance of the photovoltaic support, but also provide connection points for the flexible connecting cables 3 using the rigid connecting frames 2, reducing the amount of investment in the support structure and facilitating the installation of the flexible connecting cables 3.

[0054] Both the rigid connecting frame 2 and the flexible connecting cable 3 are mounted on the locking frame 14, which avoids the problem of the rigid connecting frame 2 and the flexible connecting cable 3 being connected to the fixed cable 12 and the load-bearing cable 13, thus preventing the installation of photovoltaic panels from being hindered. Since the rigid connecting frame 2 only connects the two photovoltaic cable frames 1 at the ends, and the multiple photovoltaic cable frames 1 in the middle are connected by the flexible connecting cable 3, this rigid-flexible combination method can also be applied to terrain with changes in height. At the same time, the two photovoltaic cable frames 1 connected by the rigid connecting frame 2 are combined together, and their own vibration frequency is changed, no longer consistent with that of a single photovoltaic cable frame 1. Therefore, the problem of multiple photovoltaic cable frames 1 resonating can also be avoided, reducing resonance damage.

[0055] like Figure 1 As shown, multiple photovoltaic cable frames 1 are arranged along the width direction of the photovoltaic cable frame 1. Multiple sets of rigid connecting frames 2 and flexible connecting cables 3 are provided. These sets of rigid connecting frames 2 and flexible connecting cables 3 are arranged parallel to and spaced apart along the length direction of the photovoltaic cable frame 1. Each set of rigid connecting frames 2 has two members. The two rigid connecting frames 2 in the same set are respectively connected to two photovoltaic cable frames 1 located at both ends of the multiple photovoltaic cable frames 1, thereby improving the interconnection effect of the multiple photovoltaic cable frames 1 and adapting to photovoltaic supports with large photovoltaic cable frame 1 lengths; similarly, as... Figure 2 As shown, each set of flexible connecting cables 3 is also provided with two, that is, each locking frame 14 is provided with two flexible connecting cables 3, one located in the middle of the locking frame 14 and the other located below the locking frame 14, which can form a stable structure with the locking frame 14 and enhance the wind resistance of the photovoltaic support.

[0056] For photovoltaic support structures with relatively large spans, multiple reinforcing frames 4 are installed to improve the rigid connection effect of the photovoltaic cable frames 1 at both ends. Specifically, such as... Figure 1 As shown, the reinforcing frame 4 is fixedly installed between two adjacent rigid connecting frames 2 located at the same end of the flexible connecting cable 3. Multiple reinforcing frames 4 located at the same end of the flexible connecting cable 3 are arranged in a zigzag pattern, thereby providing sufficient support for the photovoltaic cable frame 1 located at the end.

[0057] As the photovoltaic (PV) support system ages, it is susceptible to loosening at the connection points of the flexible connecting cable 3 due to wind and vibration. This results in insufficient tension in the flexible connecting cable 3, affecting the wind resistance of the PV support system. To eliminate this defect, such as... Figure 3 As shown, the two ends of the flexible connecting cable 3 are fixedly connected to two photovoltaic cable frames 1 located at its two ends, and the flexible connecting cable 3 is slidably connected to multiple photovoltaic cable frames 1 located in the middle position. An anti-loosening mechanism 5 is fitted on the flexible connecting cable 3 to tighten it when the tension of the flexible connecting cable 3 decreases, so as to ensure the normal operation of the photovoltaic support.

[0058] The anti-loosening mechanism 5 includes a body 51, a fine-adjusting wheel 52, a fixing component 53, a gear disc 54, a gear 55, a guide wheel 56, and a pulling block 57. The body 51 has an inlet 501 and an outlet 502. The fine-adjusting wheel 52 is rotatably mounted inside the body 51. The fixing component 53 is threadedly connected to the fine-adjusting wheel 52 and abuts against the body 51, thereby fixing the fine-adjusting wheel 52 against the body 51 and allowing it to be rotatably fixed to the body 51. Figure 6 and Figure 7 As shown, multiple cable grooves 503 are provided on the circumference of the fine-tuning wheel 52. The distance from the inner wall of the multiple cable grooves 503 to the rotation axis of the fine-tuning wheel 52 is different, that is, the distance from the inner wall of different cable grooves 503 to the rotation axis of the fine-tuning wheel 52 is not equal. The flexible connecting cable 3 slides through and is installed in the inlet 501 and the outlet 502, and is held against one of the cable grooves 503. By loosening the fixing member 53 and rotating the fine-tuning wheel 52, the flexible connecting cable 3 can be held against different cable grooves 503, thereby adjusting the tension of the flexible connecting cable 3 to meet the actual needs.

[0059] When adjusting the tension of the flexible connecting cable 3, the fine-tuning wheel 52 needs to be rotated. That is, the fixing member 53 must first be released from the fixing of the fine-tuning wheel 52 and the body 51. After the fine-tuning wheel 52 rotates to the appropriate angle, the fixing member 53 is used to fix the fine-tuning wheel 52 and the body 51. Since the fixing member 53 and the fine-tuning wheel 52 are connected by a threaded connection, the fixing member 53 needs to be rotated when fixing the fine-tuning wheel 52. This will cause the fine-tuning wheel 52 to rotate at a very small angle, which will cause the actual tension of the flexible connecting cable 3 to differ from the preset tension, affecting the overall performance of the photovoltaic bracket.

[0060] To solve the above problems, each cable groove 503 is set to be arc-shaped, and the center of the cable groove 503 is located on the rotation axis of the fine-tuning wheel 52. That is, the distance from each position inside the same cable groove 503 to the rotation axis of the fine-tuning wheel 52 is equal. Figure 4 and Figure 5 As shown, when the flexible connecting cable 3 is held against different positions within the same cable groove 503, the tension of the flexible connecting cable 3 will not be affected, thereby reducing the installation error of the tension of the flexible connecting cable 3.

[0061] The fine-tuning wheel 52 is used only for fine-tuning the tension of the flexible connecting cable 3, while the tensioning block 57 is used for large-scale coarse adjustments to the tension of the flexible connecting cable 3, such as... Figure 8 and Figure 10 As shown, the tension block 57 includes an arc-shaped block, a screw, and a nut. The arc-shaped block is slidably mounted on the machine body 51, and the flexible connecting cable 3 abuts against the arc-shaped block. The screw passes through the machine body 51, and the nut is threadedly connected to the screw and abuts against the outer side of the machine body 51. When the nut is rotated, the arc-shaped block can be moved, thereby allowing the tension block 57 to be fixedly mounted on the machine body 51 in a slidable manner. This enables the tensioning or loosening of the flexible connecting cable 3, allowing for rapid adjustment of the tension force of the flexible connecting cable 3 and improving its adjustment efficiency.

[0062] Guide wheel 56 is used to guide flexible connecting cable 3 to prevent wear between flexible connecting cable 3 and body 51, such as Figure 4 and Figure 11 As shown, there are two guide wheels 56, which are rotatably disposed inside the body 51. The flexible connecting cable 3 is abutted against the periphery of the guide wheels 56, and the two guide wheels 56 and the fine-tuning wheel 52 are respectively disposed on both sides of the flexible connecting cable 3.

[0063] like Figure 9 As shown, in order to connect the fixing member 53 and the fine-tuning wheel 52 through a threaded connection, a threaded hole 504 needs to be opened on the fine-tuning wheel 52, and an arc groove 505 needs to be opened on the machine body 51. The arc groove 505 is an arc-shaped slot. The fixing member 53 passes through the arc groove 505 and is connected in the threaded hole 504 through a threaded connection, and abuts against the machine body 51. When the fixing member 53 is loosened so that the fixing member 53 does not separate from the threaded hole 504 but separates from the machine body 51, the fixing member 53 can be slidably set in the arc groove 505, so that the sliding of the fixing member 53 drives the fine-tuning wheel 52 to rotate.

[0064] The fine-tuning wheel 52 is surrounded by grooves 503. To allow the flexible connecting cable 3 to engage with the appropriate grooves 503, the fine-tuning wheel 52 needs to rotate fully. To achieve this, the length of the arc groove 505 needs to be increased. However, a longer arc groove 505 would affect the structural stability of the body 51. Figure 8 As shown, the present invention provides a plurality of threaded holes 504 on the fine-tuning wheel 52, arranged circumferentially around the rotation axis of the fine-tuning wheel 52, such that the length of the arc groove 505 is greater than the sum of the distance between two adjacent threaded holes 504 and the inner diameter of the threaded hole 504. Figure 9 As shown, when the fixing member 53 slides from one end of the arc groove 505 to the other end, at least two threaded holes 504 will appear in the arc groove 505. At this time, two fixing members 53 can be set so that the two fixing members 53 are alternately connected in different threaded holes 504 and alternately drive the fine adjustment wheel 52 to rotate, thereby reducing the opening span of the arc groove 505 to ensure the structural strength of the body 51.

[0065] like Figure 7 As shown, the distances between the multiple cable grooves 503 on the periphery of the fine-tuning wheel 52 and the rotation axis of the fine-tuning wheel 52 are r1, r2, r3, r4, r5, r6, r7 and r8 in ascending order, and are set sequentially in a clockwise or counterclockwise direction. In order to ensure the continuity of the multiple cable grooves 503, the difference between adjacent cable grooves 503 needs to be equal, and the difference between the distances between two adjacent cable grooves 503 and the rotation axis of the fine-tuning wheel 52 should be minimized as much as possible, so that the flexible connecting cable 3 can move smoothly in each cable groove 503.

[0066] When the difference between r2 and r1 is small, even if the flexible connecting cable 3 moves from the cable groove 503 at r1 to the cable groove 503 at r8, the range of its tension adjustment is relatively small. To expand the adjustment range of the fine-tuning wheel 52 on the tension of the flexible connecting cable 3, such as... Figure 8 and Figure 11As shown, two fine-tuning wheels 52 are provided. The flexible connecting cable 3 abuts against one of the cable grooves 503 on each fine-tuning wheel 52. The rotation axes of the two fine-tuning wheels 52 coincide. Since the tension force F of the flexible connecting cable 3 is equal to the elastic modulus E × cross-sectional area A × (tension δ / original length L), the tension of the flexible connecting cable 3 is directly proportional to the distance from the inner wall of the cable groove 503 to the rotation axis of the fine-tuning wheel 52. Therefore, the change in the tension force of the flexible connecting cable 3 is directly proportional to the difference in distance from the inner wall of the two cable grooves 503 to the rotation axis of the fine-tuning wheel 52. The ratio is ΔF = n·Δr, where ΔF is the change in tension of the flexible connecting cable 3, Δr is the difference between the distance from the inner wall of the cable groove 503 where the flexible connecting cable 3 was before moving to the rotation axis of the fine-tuning wheel 52 and the distance from the inner wall of the cable groove 503 where it was after moving to the rotation axis of the fine-tuning wheel 52, and n is a proportionality coefficient. When using one fine-tuning wheel 52, the maximum value of ΔF is n(r8-r1), while when using two fine-tuning wheels 52, the maximum value of ΔF is 2n(r8-r1), thereby increasing its adjustment range.

[0067] Each of the two fine-tuning wheels 52 is fixedly equipped with a gear plate 54, such as Figure 10 As shown, multiple gears 55 are rotatably mounted on the machine body 51 and located between two gear discs 54, with each gear 55 meshing with both gear discs 54, as shown. Figure 11 As shown, when one fine-tuning wheel 52 is rotated for adjustment, the meshing of gear 55 and gear plate 54 drives the other fine-tuning wheel 52 to rotate, thus allowing the two symmetrical fine-tuning wheels 52 to rotate coaxially but in opposite directions. When the two fine-tuning wheels 52 are as shown... Figure 11 When set up in a relative configuration, the two fine-tuning wheels 52, which rotate in opposite directions on the same axis, can simultaneously increase or decrease the tension of the flexible connecting cable 3, thus eliminating the need to adjust the two fine-tuning wheels 52 one by one, making the operation more convenient.

[0068] In actual operation, the initial positions of the two fine-tuning wheels 52 can also be adjusted to... Figure 11 For example, at this time, the relative relationship between the two fine-tuning wheels 52 and the relative relationship between the flexible connecting cable 3 and the two fine-tuning wheels 52 are consistent, so that the flexible connecting cable 3 abuts against the two fine-tuning wheels 52 at the same position. Therefore, the maximum value of ΔF is 2n(r8-r1). Adjusting the initial position of the two fine-tuning wheels 52, such as... Figure 11 As shown, if the fine-tuning wheel 52, which is fully shown in the figure, is rotated 45 degrees clockwise, the maximum value of ΔF is less than 2n(r8-r1), thereby reducing the adjustment range of the relaxation mechanism 5 and improving its adjustment accuracy to adapt to different practical needs.

[0069] Fastener 53 can be made directly using bolts, or alternatively, such as... Figure 9The structure shown combines a screw and a nut. Compared to a bolt, this structure allows for two adjustments, thereby increasing the adjustability of the fastener 53 and achieving effects such as reducing wear and improving ease of operation.

[0070] The invention relates to a method for using a large-span flexible photovoltaic support system with a flexible lateral connection system as follows:

[0071] S1, according to Figure 1 As shown, multiple support frames 11 are arranged at the construction location, and fixing cables 12 are fixedly installed between the corresponding support frames 11. Among them, two fixing cables 12 on the same support frame 11 should be installed at an angle, and the plane on which they are located generally forms an angle of 0-60 degrees with the horizontal plane, which is determined according to the actual environmental requirements. The tension of the fixing cables 12 should also be matched with the design, span, load-bearing requirements and environmental conditions of the photovoltaic support.

[0072] S2, take out a flexible connecting cable 3, install a rigid connecting frame 2 at each end of it, install the anti-loosening mechanism 5 on the flexible connecting cable 3, and install a locking frame 14 on each fixed cable 12 on the corresponding rigid connecting frame 2 or flexible connecting cable 3, and combine them to form a connecting body;

[0073] S3, the multiple locking brackets 14 in the above-mentioned connecting body are put on the corresponding fixing cables 12, and the locking brackets 14 and the fixing cables 12 are allowed to slide without being fixedly connected.

[0074] S4, repeat S2-S3, install multiple sets of connectors on the fixed cable 12, and fix multiple load-bearing cables 13 to multiple locking frames 14 respectively;

[0075] S5, drag the load-bearing cable 13, use the load-bearing cable 13 to move multiple connectors to the corresponding positions of the photovoltaic cable frame 1, and fix the two ends of the load-bearing cable 13 to the corresponding uprights 11, and fix each locking frame 14 to the fixing cable 12.

[0076] S6, the tension of each flexible connecting cable 3 is adjusted by rotating the fine-tuning wheel 52, and a reinforcing frame 4 is installed between adjacent rigid connecting frames 2.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A large-span flexible photovoltaic support system with a flexible lateral connection system, characterized in that: It includes a photovoltaic cable frame (1), a rigid connecting frame (2), and a flexible connecting cable (3), wherein, At least four photovoltaic cable frames (1) are provided, and multiple photovoltaic cable frames (1) are arranged in parallel and at intervals; The rigid connecting frame (2) is fixedly installed between the photovoltaic cable frame (1) located at both ends of the plurality of photovoltaic cable frames (1) and the adjacent photovoltaic cable frame (1); The flexible connecting cable (3) is fixedly installed between the multiple photovoltaic cable frames (1) that are not located at both ends of the multiple photovoltaic cable frames (1); It also includes an anti-loosening mechanism (5), the two ends of the flexible connecting cable (3) are respectively fixedly connected to two photovoltaic cable frames (1) located at its two ends, the flexible connecting cable (3) is slidably connected to a plurality of photovoltaic cable frames (1) located in its middle position, and the anti-loosening mechanism (5) is sleeved on the flexible connecting cable (3) for tightening the flexible connecting cable (3); The anti-loosening mechanism (5) includes a body (51), a fine-tuning wheel (52), and a fixing component (53), wherein, The body (51) is provided with an inlet (501) and an outlet (502), and the flexible connecting cable (3) is slidably and passes through the inlet (501) and the outlet (502); The fine-tuning wheel (52) is rotatably disposed inside the body (51), and multiple cable grooves (503) are provided on its periphery. The cable grooves (503) are arc-shaped structures, and their centers are located on the rotation axis of the fine-tuning wheel (52). The distances from the multiple cable grooves (503) to the rotation axis of the fine-tuning wheel (52) are different. The flexible connecting cable (3) is abutted and disposed in one of the cable grooves (503). The fastener (53) is connected to the fine-tuning wheel (52) by a threaded connection and abuts against the body (51).

2. A large-span flexible photovoltaic support system with a flexible lateral connection system as described in claim 1, characterized in that: Multiple photovoltaic cable frames (1) are arranged along the width direction of the photovoltaic cable frame (1); The rigid connecting frame (2) and the flexible connecting cable (3) are provided in multiple sets. The multiple sets of the rigid connecting frame (2) and the multiple sets of the flexible connecting cable (3) are arranged parallel to each other and spaced apart along the length direction of the photovoltaic cable frame (1). Each group of rigid connecting frames (2) is provided with two, and the two rigid connecting frames (2) in the same group are respectively connected to two photovoltaic cable frames (1) located at both ends of the plurality of photovoltaic cable frames (1).

3. A large-span flexible photovoltaic support system with a flexible lateral connection system as described in claim 2, characterized in that: It also includes multiple reinforcing frames (4), which are fixedly installed between two adjacent rigid connecting frames (2), and the multiple reinforcing frames (4) located at the same end of the flexible connecting cable (3) are arranged in a zigzag pattern.

4. A large-span flexible photovoltaic support system with a flexible lateral connection system as described in claim 1, characterized in that: The fine-tuning wheel (52) is provided with a plurality of threaded holes (504), and the plurality of threaded holes (504) are arranged circumferentially around the rotation axis of the fine-tuning wheel (52); The body (51) is provided with an arc groove (505), the length of which is greater than the sum of the distance between two adjacent threaded holes (504) and the inner diameter of the threaded hole (504). Two fasteners (53) are provided, and are respectively provided in one of the threaded holes (504).

5. A large-span flexible photovoltaic support system with a flexible lateral connection system as described in claim 4, characterized in that: Two fine-tuning wheels (52) are provided, and the flexible connecting cable (3) abuts against one of the cable grooves (503) on each fine-tuning wheel (52), and the rotation axes of the two fine-tuning wheels (52) coincide. The anti-loosening mechanism (5) also includes two toothed discs (54) and multiple gears (55), wherein, The two gear discs (54) are respectively fixedly mounted on the two fine adjustment wheels (52); The gear (55) is rotatably mounted on the body (51) and located between the two gear discs (54), and the gear (55) meshes with the two gear discs (54).

6. A large-span flexible photovoltaic support system with a flexible lateral connection system as described in claim 1, characterized in that: The anti-loosening mechanism (5) also includes two guide wheels (56), which are rotatably disposed inside the body (51). The flexible connecting cable (3) is abutted against the periphery of the guide wheel (56), and the two guide wheels (56) and the fine-tuning wheel (52) are respectively disposed on both sides of the flexible connecting cable (3).

7. A large-span flexible photovoltaic support system with a flexible lateral connection system as described in claim 6, characterized in that: The anti-loosening mechanism (5) also includes a traction block (57), which is fixedly mounted on the body (51) in a slidable manner and abuts against the flexible connecting cable (3).

8. A large-span flexible photovoltaic support system with a flexible lateral connection system as described in claim 1, characterized in that: The photovoltaic cable frame (1) includes two uprights (11), two fixing cables (12), a load-bearing cable (13), and multiple locking frames (14), wherein, Both ends of the fixed cable (12) and both ends of the load-bearing cable (13) are respectively fixed on the two uprights (11), and the center lines of the two fixed cables (12) and the center line of the load-bearing cable (13) are not coplanar; The locking frame (14) is fixedly disposed between the two fixed cables (12) and the load-bearing cable (13), and the rigid connecting frame (2) and the flexible connecting cable (3) are both disposed on the locking frame (14).

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