Large-span flexible photovoltaic support provided with flexible transverse connection system

Abstract

The invention relates to the technical field of solar photovoltaic supports, and provides a large-span flexible photovoltaic support provided with a flexible transverse connection system, the large-span flexible photovoltaic support comprises a plurality of photovoltaic cable supports, rigid connection supports and flexible connection cables, and the plurality of photovoltaic cable supports are arranged in parallel at intervals; the rigid connecting frames are fixedly arranged between the photovoltaic cable frames located at the two ends of the multiple photovoltaic cable frames and the adjacent photovoltaic cable frames. The rigid connecting frames and the flexible connecting cables are arranged, a plurality of photovoltaic cable frames are associated in a rigid-flexible combination mode, the overall space structure characteristics of the flexible photovoltaic support can be kept, the flexible photovoltaic support is made to adapt to various complex environments, the photovoltaic cable frames located at the ends can obtain a good supporting effect, and the photovoltaic cable frames are not prone to falling off. And meanwhile, the flexible connecting cable and the rigid connecting frame can be conveniently mounted, so that the mounting difficulty of the photovoltaic bracket is reduced.

Description

Technical Field

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

[0002] In photovoltaic power generation systems, photovoltaic brackets are key structures that support photovoltaic modules. Their performance and adaptability are directly related to the power generation efficiency and operation and maintenance costs of photovoltaic power stations. Although traditional rigid photovoltaic brackets meet the basic needs of photovoltaic power generation to a certain extent, their limitations are increasingly prominent under conditions such as complex terrain, scarce land resources, and special installation environments. To address this problem, flexible photovoltaic brackets came into being.

[0003] The invention patent with the publication number CN113904616A discloses a flexible photovoltaic support, which includes: a first support assembly, the number of the first support assemblies is multiple and arranged at intervals along the first direction; and a plurality of cable assemblies, the cable assemblies are arranged in sequence between the first support assemblies, and a plurality of photovoltaic assemblies are arranged on the cable assemblies; a lower chord, the lower chord is arranged below the cable assembly, the lower chord is consistent with the extension direction of the cable assembly and presents an anti-arch structure that bulges toward the direction of the cable assembly, and the lower chord is located between two adjacent first support assemblies; and a plurality of frames, the lower chord and the cable assembly are connected by a plurality of frames. The setting of the lower chord can provide a downward tension to the cable assembly through the frame, so that the flexible photovoltaic support can maintain good working ability when subjected to upward wind load. The lower chord can adjust its pre-arch by changing the applied prestress to change the magnitude of the downward tension on the cable assembly, thereby improving the stability of the flexible photovoltaic support when subjected to upward wind load.

[0004] In the above technical scheme, in order to enhance the wind resistance of the flexible photovoltaic support, a transverse connection system consisting of a connecting cable, a first cross cable and a second cross cable is set up to link multiple cable assemblies. However, connecting cables, first cross cables and second cross cables are installed on both sides of the multiple cable assemblies located in the middle position, while connecting cables, first cross cables and second cross cables are installed on only one side of the two cable assemblies located at the end positions, resulting in relatively poor support effect for the two cable assemblies located at the end positions, and there is a risk of overall or partial overturning, thereby 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 bracket with a flexible transverse connection system, which can improve the support effect of the photovoltaic cable rack located at the end position and effectively improve the overall wind resistance of the flexible photovoltaic bracket.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a large-span flexible photovoltaic support with a flexible transverse connection system, including a photovoltaic cable rack, a rigid connection rack and a flexible connection cable, wherein:

[0007] At least four photovoltaic cable racks are provided, and the plurality of photovoltaic cable racks are arranged in parallel and at intervals;

[0008] The rigid connecting frames are respectively fixedly arranged between the photovoltaic cable racks located at both ends of the plurality of photovoltaic cable racks and the photovoltaic cable racks adjacent thereto;

[0009] The flexible connecting rope is fixedly arranged between the plurality of photovoltaic cable racks which are not located at both ends of the plurality of photovoltaic cable racks.

[0010] On the basis of the above technical solution, preferably, a plurality of photovoltaic cable racks are arranged along the width direction of the photovoltaic cable rack;

[0011] The rigid connection frame and the flexible connection cable are provided in multiple groups, and the multiple groups of the rigid connection frame and the multiple groups of the flexible connection cable are arranged in parallel and at intervals along the length direction of the photovoltaic cable rack;

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

[0013] More preferably, it further comprises a plurality of reinforcement frames, wherein the reinforcement frames are fixedly disposed between two adjacent rigid connection frames, and the plurality of reinforcement frames located at the same end of the flexible connection cable are arranged in a zigzag shape.

[0014] On the basis of the above technical solution, preferably, it also includes an anti-loosening mechanism, wherein the two ends of the flexible connecting cable are respectively fixedly connected to the two photovoltaic cable racks located at the two ends thereof, and the flexible connecting cable is slidably connected to the multiple photovoltaic cable racks located in the middle thereof, and the anti-loosening mechanism is sleeved on the flexible connecting cable for tightening the flexible connecting cable.

[0015] More preferably, the anti-loosening mechanism comprises a body, a fine-tuning wheel and a fixing member, wherein:

[0016] The machine body is provided with a line inlet and a line outlet, and the flexible connecting rope is slidably and penetrates the line inlet and the line outlet;

[0017] The fine-tuning wheel is rotatably arranged in the body, and a plurality of cable grooves are provided on the circumference thereof. The cable grooves are arc-shaped structures, and the center of the circle is located on the rotation axis of the fine-tuning wheel. The distances from the plurality of cable grooves to the rotation axis of the fine-tuning wheel are different, and the flexible connecting cable is abutted and arranged in one of the cable grooves;

[0018] The fixing piece is connected to the fine-tuning wheel through threaded engagement and is abutted against the machine body.

[0019] More preferably, the fine-tuning wheel is provided with a plurality of threaded holes, and the plurality of threaded holes are arranged around the circumference of the rotating shaft of the fine-tuning wheel;

[0020] An arc groove is provided on the machine body, the length of which is greater than the sum of the spacing between two adjacent threaded holes and the inner diameter of the threaded holes. Two fixing members are provided, and are respectively arranged in one of the threaded holes.

[0021] More preferably, two fine-tuning wheels are provided, the flexible connecting cable is abutted against one of the cable grooves on each of the fine-tuning wheels, and the rotation axes of the two fine-tuning wheels coincide with each other;

[0022] The anti-loosening mechanism also includes two toothed discs and a plurality of gears, wherein:

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

[0024] The gear is rotatably arranged on the machine body and is located between the two toothed discs, and the gear is meshed with the two toothed discs.

[0025] On the basis of the above technical solution, preferably, the anti-loosening mechanism also includes two guide wheels, the guide wheels are rotatably arranged in the machine body, the flexible connecting rope is supported on the circumferential side of the guide wheels, and the two guide wheels and the fine-tuning wheel are respectively arranged on both sides of the flexible connecting rope.

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

[0027] On the basis of the above technical solution, preferably, the photovoltaic cable rack includes two vertical frames, two fixed cables, a load-bearing cable and a plurality of locking frames, wherein:

[0028] Both ends of the fixing cable and both ends of the load-bearing cable are respectively fixedly arranged on the two upright frames, and the center lines of the two fixing cables and the center line of the load-bearing cable are not coplanar;

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

[0030] The large-span flexible photovoltaic support provided with a flexible transverse connection system of the present invention has the following beneficial effects compared with the prior art:

[0031] (1) By setting a rigid connection frame and a flexible connection cable, multiple photovoltaic cable racks are associated in a rigid-flexible combination manner, which can not only maintain the overall spatial structural characteristics of the flexible photovoltaic bracket, allowing it to adapt to various complex environments, but also allow the photovoltaic cable racks at the ends to obtain a good support effect, thereby improving the overall wind resistance of the photovoltaic bracket. At the same time, it can also facilitate the installation of the flexible connection cable and the rigid connection frame, reducing the difficulty of installation;

[0032] (2) By arranging a fine-tuning wheel and a pulling 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 arranging multiple cable grooves in an arc shape, the influence of the slight rotation of the fine-tuning 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 a plurality of threaded holes and limiting the length of the arc groove, it is possible to ensure that the fine-tuning wheel can fully rotate and the structural strength of the machine body can be ensured. By setting two fine-tuning wheels, a toothed disc and a gear, it is possible to ensure the continuity of adjacent cable grooves and increase the adjustment range of the anti-loosening mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A top view of a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0036] Figure 2 It is a partial stereoscopic diagram of a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0037] Figure 3 A three-dimensional diagram of a rigid connection frame in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0038] Figure 4 It is a cross-sectional view of an anti-loosening mechanism in a large-span flexible photovoltaic support provided with a flexible transverse connection system of the present invention in a first state;

[0039] Figure 5 A cross-sectional view of an anti-loosening mechanism in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention, in a second state;

[0040] Figure 6 A three-dimensional diagram of a fine-tuning wheel in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0041] Figure 7 A cross-sectional view of a fine-tuning wheel in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0042] Figure 8 This is a three-dimensional diagram of the interior of an anti-loosening mechanism in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0043] Fig. 9 A three-dimensional diagram of a fixing part in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0044] Fig.10 A three-dimensional diagram of a gear in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0045] Fig.11 It is a side view of an anti-loosening mechanism in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention;

[0046] Fig.12 It is a side view of a locking frame in a large-span flexible photovoltaic support provided with a flexible transverse connection system according to the present invention.

[0047] Among them: 1. Photovoltaic cable rack; 11. Vertical frame; 12. Fixed cable; 13. Load-bearing cable; 14. Locking frame; 2. Rigid connecting frame; 3. Flexible connecting cable; 4. Reinforcement frame; 5. Anti-loosening mechanism; 51. Machine body; 52. Fine-tuning wheel; 53. Fixing part; 54. Toothed plate; 55. Gear; 56. Guide wheel; 57. Pulling block; 501. Line inlet; 502. Line outlet; 503. Cable groove; 504. Threaded hole; 505. Arc groove. DETAILED DESCRIPTION

[0048] The following will be combined with the specific implementation of the present invention to clearly and completely describe the technical solution in the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementation. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] like Figure 1-Figure 12 As shown, a large-span flexible photovoltaic support with a flexible transverse connection system of the present invention includes a photovoltaic cable rack 1, a rigid connection rack 2, a flexible connection cable 3, a plurality of reinforcement racks 4 and an anti-loosening mechanism 5.

[0050] like Figure 2 and Fig.12 As shown, the photovoltaic cable rack 1 includes two vertical frames 11, two fixed cables 12, a load-bearing cable 13 and multiple locking frames 14. The fixed cables 12 and the load-bearing cables 13 are both flexible steel wire ropes. Both ends of the fixed cables 12 and both ends of the load-bearing cables 13 are respectively fixed on the two vertical frames 11. After the two fixed cables 12 are tightened, the photovoltaic panel is installed between the two fixed cables 12. By utilizing the flexible support of the fixed cables 12, the photovoltaic bracket can be adapted to special installation environments such as complex terrain and scarce land resources. The two fixed cables 12 are arranged one high and one low, so that the photovoltaic panel can form a certain inclination angle with the horizontal plane, so as 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 fixing 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 line of the two fixed cables 12. The locking frame 14 is fixedly arranged between the two fixed cables 12 and the load-bearing cable 13. The locking frame 14 is a triangular structure. The stability of the locking frame 14 can provide more stable support for the two fixed cables 12 and the load-bearing cable 13 to enhance their wind resistance and avoid the risk of damage to the photovoltaic panels or deformation of the bracket due to excessive wind.

[0052] In remote areas such as mountainous areas, islands, or other areas suitable for installing photovoltaic power generation systems, in order to fully utilize solar energy resources, it is necessary to lay a large number of photovoltaic brackets to achieve efficient power generation. Figure 1 As shown, in this environment, it is necessary to set up multiple photovoltaic cable racks 1, and let multiple photovoltaic cable racks 1 be set in parallel and at intervals; in order to improve the correlation of multiple photovoltaic cable racks 1 and enhance the overall wind resistance of photovoltaic brackets, it is necessary to use related components to connect multiple photovoltaic cable racks 1. At present, there are two ways to associate multiple photovoltaic cable racks 1. The first way is to use steel structures to connect multiple photovoltaic cable racks 1. It is a rigid connection. Although this method has high structural stability and can withstand large wind forces and other external forces, it consumes more materials and is difficult to install. Not only does it require the use of a large amount of steel, but it also requires the use of professional construction teams and mechanical equipment to cooperate, resulting in poor terrain adaptability of this method; the second way is to use steel wire ropes to connect multiple photovoltaic cable racks 1. It is a flexible connection. Although this method is easy to install and has good terrain adaptability, as Figure 1 As shown, steel wire ropes are provided on both sides of the multiple photovoltaic cable racks 1 located in the middle position, while steel wire ropes are provided on only one side of the two photovoltaic cable racks 1 located at the upper and lower ends. When the steel wire ropes are subjected to stress, the two photovoltaic cable racks located at the two ends are subjected to uneven stress, which makes overturning more likely to occur, affecting the overall wind resistance of the photovoltaic bracket.

[0053] For a large-span flexible photovoltaic support, in order to improve its terrain adaptability and ensure its overall wind resistance, the present invention uses a rigid-flexible connection method to associate multiple photovoltaic cable racks 1. This connection method is applicable to a photovoltaic support with at least four photovoltaic cable racks 1. The rigid connecting racks 2 are respectively fixedly arranged between the photovoltaic cable racks 1 located at both ends of the multiple photovoltaic cable racks 1 and the photovoltaic cable racks 1 adjacent thereto, and the flexible connecting ropes 3 are fixedly arranged between the multiple photovoltaic cable racks 1 that are not located at both ends of the multiple photovoltaic cable racks 1. Figure 1 As shown in the figure, there are eight photovoltaic cable racks 1 in total, the two upper photovoltaic cable racks 1 are connected by a rigid connecting frame 2, the two lower photovoltaic cable racks 1 are connected by a rigid connecting frame 2, and the six middle photovoltaic cable racks 1 are connected by flexible connecting cables 3. By using this rigid-flexible combination, not only can the support effect of the photovoltaic cable racks 1 at the end positions be improved, and the overall wind resistance of the photovoltaic bracket can be enhanced, but also the rigid connecting frame 2 can be used to provide a connection fulcrum for the flexible connecting cable 3, thereby reducing the investment in the supporting structure and facilitating the installation of the flexible connecting cable 3.

[0054] The rigid connecting frame 2 and the flexible connecting rope 3 are both arranged on the locking frame 14, thereby avoiding the problem of hindering the installation of photovoltaic panels due to the connection between the rigid connecting frame 2 and the flexible connecting rope 3 and the fixed rope 12 and the load-bearing rope 13; since the rigid connecting frame 2 only connects the two photovoltaic cable racks 1 at the ends, and the multiple photovoltaic cable racks 1 in the middle are connected by the flexible connecting rope 3, this rigid-flexible combination can also be applicable to terrain with varying height differences; at the same time, the two photovoltaic cable racks 1 connected by the rigid connecting frame 2 are combined together, and their own vibration frequency is changed and no longer consistent with a single photovoltaic cable rack 1, therefore, the problem of resonance of multiple photovoltaic cable racks 1 can be avoided, thereby reducing resonance damage.

[0055] like Figure 1 As shown, multiple photovoltaic cable racks 1 are arranged along the width direction of the photovoltaic cable rack 1, and multiple groups of rigid connecting frames 2 and flexible connecting cables 3 are provided. The multiple groups of rigid connecting frames 2 and the multiple groups of flexible connecting cables 3 are arranged in parallel and at intervals along the length direction of the photovoltaic cable rack 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 the two photovoltaic cable racks 1 located at both ends of the multiple photovoltaic cable racks 1, thereby improving the association effect of the multiple photovoltaic cable racks 1, and is suitable for photovoltaic brackets with larger photovoltaic cable racks 1; similarly, as Figure 2 As shown, each group 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 is located in the middle position of the locking frame 14, and the other is located below the locking frame 14, which can form a stable structure with the locking frame 14 to enhance the wind resistance of the photovoltaic bracket.

[0056] For a photovoltaic support with a relatively large span, in order to improve the rigid connection effect of the photovoltaic cable racks 1 at both ends, multiple reinforcement racks 4 are set, specifically, Figure 1 As shown, the reinforcement frame 4 is fixedly arranged between two adjacent rigid connection frames 2 located at the same end of the flexible connection cable 3, and multiple reinforcement frames 4 located at the same end of the flexible connection cable 3 are arranged in a zigzag shape, thereby providing sufficient support for the photovoltaic cable frame 1 located at the end.

[0057] As the photovoltaic bracket is used for a longer time, it is affected by wind, vibration, etc., and the connection position of the flexible connecting cable 3 is prone to loosening, resulting in insufficient tension of the flexible connecting cable 3, which affects the wind resistance of the photovoltaic bracket. In order to eliminate this defect, Figure 3 As shown, the two ends of the flexible connecting cable 3 are respectively fixedly connected to the two photovoltaic cable racks 1 located at the two end positions thereof, the flexible connecting cable 3 is slidably connected to the multiple photovoltaic cable racks 1 located in the middle position thereof, and an anti-loosening mechanism 5 is sleeved on the flexible connecting cable 3 to tighten the flexible connecting cable 3 when the tensioning force of the flexible connecting cable 3 is reduced, thereby ensuring the normal operation of the photovoltaic bracket.

[0058] The anti-loosening mechanism 5 includes a body 51, a fine-tuning wheel 52, a fixing member 53, a toothed disc 54, a gear 55, a guide wheel 56 and a pulling block 57. The body 51 is provided with a line inlet 501 and a line outlet 502. The fine-tuning wheel 52 is rotatably arranged in the body 51. The fixing member 53 is connected to the fine-tuning wheel 52 through threaded cooperation and abuts against the body 51, so that the fine-tuning wheel 52 is abutted and fixed against the body 51, and the fine-tuning wheel 52 is fixed to the body 51 in a rotatable manner; Figure 6 and Figure 7 As shown, a plurality of cable grooves 503 are provided on the circumferential side of the fine-tuning wheel 52, and the distances from the inner walls of the plurality of cable grooves 503 to the rotation axis of the fine-tuning wheel 52 are different, that is, the distances from the inner walls of different cable grooves 503 to the rotation axis of the fine-tuning wheel 52 are not equal. The flexible connecting cable 3 slides and penetrates through the inlet 501 and the outlet 502, and is abutted in 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 abutted against different cable grooves 503, thereby adjusting the tension of the flexible connecting cable 3 to meet 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 of the fine-tuning wheel 52 and the body 51 by the fixing part 53 needs to be released first, and then the fine-tuning wheel 52 and the body 51 are fixed by the fixing part 53 after the fine-tuning wheel 52 is rotated to a suitable angle. Since the fixing part 53 and the fine-tuning wheel 52 are connected by threaded cooperation, when the fixing part 53 fixes the fine-tuning wheel 52, the fixing part 53 needs to be rotated, which will cause the fine-tuning wheel 52 to rotate at a very small angle, thereby causing a difference between the actual tension of the flexible connecting cable 3 and the preset tension, affecting the overall performance of the photovoltaic bracket.

[0060] In order to solve the above problem, each cable slot 503 is set to be in an arc shape, and the center of the cable slot 503 is located on the rotation axis of the fine-tuning wheel 52, that is, the distance from each position inside the same cable slot 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 abutted against different positions in the same cable groove 503, the tensioning force of the flexible connecting cable 3 is not affected, thereby reducing the installation error of the tensioning force of the flexible connecting cable 3.

[0061] The fine-tuning wheel 52 is only used to fine-tune the tension of the flexible connecting cable 3, and the pulling block 57 is used to roughly adjust the tension of the flexible connecting cable 3 by a large margin, such as Figure 8 and Fig.10 As shown, the pulling block 57 includes a bow block, a screw and a nut. The bow block is slidably set on the body 51, and the flexible connecting rope 3 is abutted on the bow block. The screw runs through the body 51, and the nut is connected to the screw by threaded fitting and abuts against the outside of the body 51. When the nut is rotated, the bow block can be moved, so that the pulling block 57 can be fixedly set on the body 51 in a slidable manner, thereby realizing the tightening or loosening operation of the flexible connecting rope 3, and quickly adjusting the tension of the flexible connecting rope 3, thereby improving its adjustment efficiency.

[0062] The guide wheel 56 is used to guide the flexible connecting cable 3 to prevent the flexible connecting cable 3 and the body 51 from being worn. Figure 4 and Fig.11 As shown, there are two guide wheels 56 , which are rotatably arranged in the machine body 51 , the flexible connecting rope 3 is supported on the peripheral side of the guide wheel 56 , and the two guide wheels 56 and the fine-tuning wheel 52 are respectively arranged on both sides of the flexible connecting rope 3 .

[0063] like Fig. 9 As shown, in order to connect the fixing member 53 with the fine-tuning wheel 52 through threaded cooperation, it is necessary to open a threaded hole 504 on the fine-tuning wheel 52 and open an arc groove 505 on the body 51. The arc groove 505 is an arc-shaped slot hole. The fixing member 53 passes through the arc groove 505 and is connected in the threaded hole 504 through threaded cooperation and abuts against the body 51. When the fixing member 53 is loosened so that the fixing member 53 is not separated from the threaded hole 504 but separated from the 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 circumference of the fine-tuning wheel 52 is covered with cable grooves 503. In order to allow the flexible connecting cable 3 to abut against the appropriate cable grooves 503, the fine-tuning wheel 52 needs to be able to fully rotate. To achieve this effect, the length of the arc groove 505 needs to be increased. However, the arc groove 505 with a large length will affect the structural firmness of the body 51. Figure 8 As shown, the present invention opens a plurality of threaded holes 504 on the fine-tuning wheel 52, and the plurality of threaded holes 504 are arranged around the circumference of the rotating shaft of the fine-tuning wheel 52, so that the length of the arc groove 505 is greater than the sum of the spacing between two adjacent threaded holes 504 and the inner diameter of the threaded hole 504, as shown in FIG. Fig. 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, and the two fixing members 53 are alternately connected to different threaded holes 504, and alternately drive the fine-tuning wheel 52 to rotate, so that the span of the arc groove 505 can be reduced 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 circumferential side 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 from small to large, and are arranged in sequence in a clockwise or counterclockwise direction. In order to ensure the continuity of the multiple cable grooves 503, it is necessary to make the differences between adjacent cable grooves 503 equal, and minimize the difference in the distances between two adjacent cable grooves 503 and the rotation axis of the fine-tuning wheel 52, 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 adjustment range of its tension force is relatively small. In order to expand the adjustment range of the tension force of the flexible connecting cable 3 by the fine-tuning wheel 52, as shown in FIG. Figure 8 and Fig.11As shown, two fine-tuning wheels 52 are provided, and the flexible connecting cable 3 is abutted 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 with each other. Since the tension F of the flexible connecting cable 3 = elastic modulus E×cross-sectional area A×(stretching amount δ / original length L), the stretching amount of the flexible connecting cable 3 is 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 of the flexible connecting cable 3 is proportional to the difference in the distance from the inner wall of the two cable grooves 503 to the rotation axis of the fine-tuning wheel 52. Ratio, that is, ΔF=n·Δr, wherein ΔF is the change in the tensioning force of the flexible connecting cable 3, Δr is the difference between the distance from the inner wall of the cable slot 503 where the flexible connecting cable 3 is located before movement and the distance from the inner wall of the cable slot 503 where the flexible connecting cable 3 is located to the rotation axis of the fine-tuning wheel 52 after movement, and n is a positive proportional coefficient. When one fine-tuning wheel 52 is used, the maximum value of ΔF is n(r8-r1), and when two fine-tuning wheels 52 are used, the maximum value of ΔF is 2n(r8-r1), thereby increasing its adjustment range.

[0067] A toothed disc 54 is fixedly disposed on each of the two fine-tuning wheels 52. Fig.10 As shown, a plurality of gears 55 are rotatably disposed on the body 51 and are located between the two toothed discs 54, and each gear 55 is meshed with the two toothed discs 54. Fig.11 As shown in FIG. 1 , when one fine-tuning wheel 52 is rotated and adjusted, the meshing of the gear 55 and the toothed disc 54 can drive the other fine-tuning wheel 52 to rotate, so that the two symmetrical fine-tuning wheels 52 rotate coaxially and in opposite directions. Fig.11 When relatively arranged as shown, the two coaxial fine-tuning wheels 52 rotating in opposite directions can simultaneously increase or decrease the tension of the flexible connecting rope 3, thereby eliminating the need to adjust the two fine-tuning wheels 52 one by one, and making the operation more convenient.

[0068] In actual operation, the initial positions of the two fine-tuning wheels 52 can also be adjusted. Fig.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 positions of the flexible connecting cable 3 against the two fine-tuning wheels 52 are the same. Therefore, the maximum value of ΔF is 2n(r8-r1), and the initial positions of the two fine-tuning wheels 52 are adjusted, such as Fig.11 As shown, if the fine-tuning wheel 52 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 amplitude of the release mechanism 5 and improving its adjustment accuracy to adapt to different actual needs.

[0069] The fixing member 53 can be directly selected from bolts, or can be selected from Fig. 9The structure of the screw and nut combined as shown can be adjusted twice compared to the bolt, thereby improving the adjustment richness of the fixing member 53 and achieving the effects of reducing wear and improving operational convenience.

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

[0071] S1, according to Figure 1 In the manner shown, multiple stands 11 are arranged at the construction location, and the fixing cables 12 are fixedly installed between the corresponding stands 11, wherein the two fixing cables 12 on the same stand 11 should be installed at an angle, and the planes where the two are located generally form an angle of 0-60 degrees with the horizontal plane, which is determined according to the actual environmental requirements, and the tensioning force of the fixing cables 12 should also match the design, span, load-bearing requirements and environmental conditions of the photovoltaic bracket;

[0072] S2, take out a flexible connecting cable 3, install a rigid connecting frame 2 at both ends of the flexible connecting cable, 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 to form a connecting body;

[0073] S3, putting the multiple locking frames 14 in the connecting body onto the corresponding fixing cables 12, and keeping the locking frames 14 and the fixing cables 12 slidably connected without being fixed;

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

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

[0076] S6, adjusting the tension of each flexible connecting cable 3 by rotating the fine-tuning wheel 52, and installing the reinforcement frame 4 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 in the protection scope of the present invention.

Claims

1. A large-span flexible photovoltaic support with a flexible transverse connection system, characterized in that: It comprises a photovoltaic cable rack (1), a rigid connection rack (2) and a flexible connection cable (3), wherein: At least four photovoltaic cable racks (1) are provided, and the plurality of photovoltaic cable racks (1) are arranged in parallel and at intervals; The rigid connecting frames (2) are respectively fixedly arranged between the photovoltaic cable racks (1) located at both ends of the plurality of photovoltaic cable racks (1) and the photovoltaic cable racks (1) adjacent thereto; The flexible connecting rope (3) is fixedly arranged between the plurality of photovoltaic cable racks (1) which are not located at the two ends of the plurality of photovoltaic cable racks (1).

2. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 1, characterized in that: A plurality of photovoltaic cable racks (1) are arranged along the width direction of the photovoltaic cable rack (1); The rigid connection frame (2) and the flexible connection cable (3) are both provided in multiple groups, and the multiple groups of the rigid connection frame (2) and the multiple groups of the flexible connection cable (3) are all arranged in parallel and at intervals along the length direction of the photovoltaic cable rack (1); Two rigid connection frames (2) are provided in each group, and the two rigid connection frames (2) in the same group are respectively connected to two photovoltaic cable racks (1) located at both ends of the plurality of photovoltaic cable racks (1).

3. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 2, characterized in that: It also comprises a plurality of reinforcement frames (4), wherein the reinforcement frames (4) are fixedly arranged between two adjacent rigid connection frames (2), and the plurality of reinforcement frames (4) located at the same end of the flexible connection rope (3) are arranged in a zigzag shape.

4. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 1, characterized in that: It also includes an anti-loosening mechanism (5), wherein the two ends of the flexible connecting cable (3) are respectively fixedly connected to the two photovoltaic cable racks (1) located at the two end positions thereof, and the flexible connecting cable (3) is slidably connected to the plurality of photovoltaic cable racks (1) located in the middle position thereof, and the anti-loosening mechanism (5) is sleeved on the flexible connecting cable (3) for tightening the flexible connecting cable (3).

5. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 4, characterized in that: The anti-loosening mechanism (5) comprises a body (51), a fine-tuning wheel (52) and a fixing member (53), wherein: The machine body (51) is provided with a line inlet (501) and a line outlet (502), and the flexible connecting rope (3) is slidably arranged to penetrate the line inlet (501) and the line outlet (502); The fine-tuning wheel (52) is rotatably arranged in the machine body (51), and a plurality of cable grooves (503) are provided on the circumference thereof. The cable grooves (503) are arc-shaped structures, and the center of the circle is located on the rotation axis of the fine-tuning wheel (52). The distances between the plurality of cable grooves (503) and the rotation axis of the fine-tuning wheel (52) are different, and the flexible connecting cable (3) is abutted and arranged in one of the cable grooves (503); The fixing member (53) is connected to the fine-tuning wheel (52) through threaded engagement, and is abutted against the machine body (51).

6. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 5, 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 around the circumference of the rotation axis of the fine-tuning wheel (52); The machine body (51) is provided with an arc groove (505), the length of the arc groove (505) being greater than the sum of the spacing between two adjacent threaded holes (504) and the inner diameter of the threaded holes (504), and two fixing members (53) are provided, each of which is arranged in one of the threaded holes (504).

7. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 6, characterized in that: Two fine-tuning wheels (52) are provided, the flexible connecting rope (3) abuts against one of the rope grooves (503) on each of the fine-tuning wheels (52), and the rotation axes of the two fine-tuning wheels (52) coincide with each other; The anti-loosening mechanism (5) further comprises two toothed discs (54) and a plurality of gears (55), wherein: The two toothed discs (54) are respectively fixedly arranged on the two fine-tuning wheels (52); The gear (55) is rotatably arranged on the machine body (51) and is located between the two toothed discs (54), and the gear (55) is meshed with the two toothed discs (54).

8. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 5, characterized in that: The anti-loosening mechanism (5) further comprises two guide wheels (56), wherein the guide wheels (56) are rotatably arranged in the machine body (51), the flexible connecting rope (3) is abutted against the circumference of the guide wheels (56), and the two guide wheels (56) and the fine-tuning wheel (52) are respectively arranged on both sides of the flexible connecting rope (3).

9. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 8, characterized in that: The anti-loosening mechanism (5) further comprises a pulling block (57), wherein the pulling block (57) is fixedly arranged on the machine body (51) in a slidable manner and abuts against the flexible connecting rope (3).

10. A large-span flexible photovoltaic support with a flexible transverse connection system as claimed in claim 1, characterized in that: The photovoltaic cable rack (1) comprises two vertical frames (11), two fixing cables (12), a load-bearing cable (13) and a plurality of locking frames (14), wherein: Both ends of the fixing cable (12) and both ends of the load-bearing cable (13) are respectively fixedly arranged on the two upright frames (11), and the center lines of the two fixing cables (12) and the center line of the load-bearing cable (13) are not coplanar; The locking frame (14) is fixedly arranged between the two fixing cables (12) and the load-bearing cable (13), and the rigid connecting frame (2) and the flexible connecting cable (3) are both arranged on the locking frame (14).

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