Beam string structure and flexible photovoltaic system

Abstract

The invention belongs to the field of photovoltaic supports, and discloses a beam string structure and a flexible photovoltaic system.The beam string structure is used for connecting multiple rows of flexible photovoltaic supports arranged at intervals in the first direction, each flexible photovoltaic support comprises a bearing cable assembly, each bearing cable assembly comprises a bearing cable extending in the second direction, and the first direction is perpendicular to the second direction; the beam string structure comprises at least two supporting columns which are arranged at intervals in the first direction; the beam string structure is fixedly arranged at the tops of the at least two supporting columns; one end of the string cable is fixedly connected with one end of the string beam, and the other end of the string cable is fixedly connected with the other end of the string beam; the at least one supporting assembly is fixedly arranged on the beam string structure, the upper end of the supporting assembly is used for being connected with the bearing cable, and the lower end of the supporting assembly is used for abutting against the beam string structure. The stability and the wind resistance of the flexible support are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic brackets, and in particular to a beam string structure and a flexible photovoltaic system. Background Art

[0002] Solar power generation is an important way to utilize solar energy. At present, the photovoltaic brackets used in photovoltaic power generation systems mainly include rigid photovoltaic brackets and flexible photovoltaic brackets. Flexible photovoltaic brackets are widely used in complex and diverse terrains such as agriculture, fisheries, mountains, and tidal flats due to their large span and strong ability to adapt to terrain.

[0003] However, the flexible photovoltaic bracket uses steel strands to install photovoltaic modules, and the span is large, which is prone to large deformation under wind loads. The steel strands will produce expansion and contraction deformation under various loads. The photovoltaic modules are directly installed on the steel strands and will deform along with the steel strands, resulting in damage to the photovoltaic modules. Therefore, how to improve the stability and wind resistance of the flexible photovoltaic bracket to ensure the safe operation of the photovoltaic modules under wind loads is a problem that needs to be solved urgently. Summary of the invention

[0004] The purpose of this application is to provide a beam string structure and a flexible photovoltaic system, which can improve the stability and wind resistance of the flexible photovoltaic system.

[0005] The technical solutions provided by this application are as follows:

[0006] In one aspect, a beam string structure is provided for connecting a plurality of rows of flexible photovoltaic brackets spaced apart along a first direction, wherein the flexible photovoltaic bracket comprises a load-bearing cable assembly, wherein the load-bearing cable assembly comprises a load-bearing cable extending along a second direction, wherein the first direction is perpendicular to the second direction, and the beam string structure comprises:

[0007] At least two support columns are spaced apart along the first direction;

[0008] A string beam fixedly disposed on top of at least two of the support columns;

[0009] A tension cable, disposed below the tension beam, with one end of the cable fixedly connected to one end of the tension beam, and the other end of the cable fixedly connected to the other end of the tension beam;

[0010] At least one support assembly is fixedly disposed on the beam string, the upper end of the support assembly is used to be connected to the load-bearing cable, and the lower end of the support assembly is used to abut against the beam string.

[0011] In some embodiments, the support assembly includes a first strut and a second strut, the upper end of the first strut is fixedly connected to the tension beam, the second strut is fixedly connected to the lower end of the first strut and tensions the tension beam, and the second strut is extended along the second direction.

[0012] In some embodiments, the support assembly also includes a third strut, the lower end of the third strut is fixedly connected to the second strut, the upper end of the third strut is used to connect the load-bearing cable assembly of the flexible photovoltaic support, and the number of the third struts is four, two of which are respectively fixedly connected to one end of the second strut and arranged in a V shape, and the other two are respectively fixedly connected to the other end of the second strut and arranged in a V shape, and the upper ends of the four third struts are respectively connected to the corresponding load-bearing cables.

[0013] In some embodiments, the four third struts are used to connect the load-bearing cables of two adjacent groups of the load-bearing cable assemblies; or, the four third struts are used to connect the load-bearing cables of the same group of the load-bearing cable assemblies.

[0014] In some embodiments, the third strut is an angle steel, square tube or round tube structure, and a limiting structure allowing the load-bearing cable to pass through is provided on the third strut, and the third strut is slidably connected to the load-bearing cable through the limiting structure.

[0015] In some embodiments, the limiting structure is a U-bolt, an eye bolt, or a semi-annular structure.

[0016] In some embodiments, a reinforcing plate is provided at a connection position between the beam string and the first strut; and / or;

[0017] A reinforcing rib is provided on the side wall of one end of the first brace connected to the beam string; and / or;

[0018] The second support rod is provided with a slot, and the string cable is arranged in the slot.

[0019] In some embodiments, a plurality of raised columns and limit ring assemblies are provided on the tension beam at intervals along the first direction, and a limit portion is provided on the raised column for the load-bearing cable to pass through, and the raised columns and the limit ring assemblies are alternately arranged in sequence along the first direction, and one raised column and one limit ring assembly are arranged correspondingly to one load-bearing cable assembly, wherein each limit ring assembly includes one or more limit rings arranged along the second direction.

[0020] In some embodiments, the support column is a lattice column, and a diagonal brace is provided between the support column and the beam-string, one end of the diagonal brace is fixedly connected to the beam-string, and the other end of the diagonal brace is fixedly connected to the support column.

[0021] On the other hand, a flexible photovoltaic system is also provided, comprising a plurality of rows of flexible photovoltaic supports and the beam-string structure described in any of the above embodiments, wherein the plurality of rows of flexible photovoltaic supports are arranged at intervals along a first direction, and the beam-string structure connects the plurality of rows of flexible photovoltaic supports.

[0022] The technical effect of the present application is that a stable spatial structure can be formed by interconnecting the tension beams, tension cables and supporting components to stably support the load-bearing cables, so that the photovoltaic components are stably supported on the load-bearing cables, reducing the deformation of the load-bearing cables and the damage to the photovoltaic components on the load-bearing cables under the influence of external strong winds, thereby greatly improving the stability and wind resistance of the flexible photovoltaic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present application is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0024] Figure 1 It is a structural schematic diagram of a flexible photovoltaic bracket provided in a specific embodiment of the present application;

[0025] Figure 2 It is a structural schematic diagram of a photovoltaic system provided in a specific embodiment of the present application;

[0026] Figure 3 is a structural schematic diagram of a beam string provided in a specific embodiment of the present application at a viewing angle;

[0027] Figure 4 is a structural schematic diagram of a beam string load from another perspective provided in a specific embodiment of the present application;

[0028] Figure 5 It is a partial schematic diagram of a flexible photovoltaic bracket provided in a specific embodiment of the present application;

[0029] Figure 6 It is a structural schematic diagram of a support assembly provided in a specific embodiment of the present application;

[0030] Figure 7 It is a structural schematic diagram of a support assembly supporting a load-bearing cable provided in a specific embodiment of the present application;

[0031] Figure 8 It is a schematic diagram of the structure of the cooperation between the U-bolt on the third support rod and the load-bearing cable provided in a specific embodiment of the present application;

[0032] Fig. 9 is a structural schematic diagram of a tapered connecting frame provided in a specific embodiment of the present application;

[0033] Fig.10 It is a structural schematic diagram of a zipper assembly and a tapered connecting frame provided in a specific embodiment of the present application;

[0034] Fig.11 yes Fig.10 A partial enlarged view of the .

[0035] Description of Figure Numbers:

[0036] 10. Photovoltaic modules;

[0037] 100, load-bearing cable assembly; 110, load-bearing cable; 111, first load-bearing cable; 112, second load-bearing cable; 113, third load-bearing cable; 120, conical connecting frame; 121, first vertex; 122, second vertex; 123, third vertex; 124, fourth vertex; 130, connecting rod; 140, stabilizing cable;

[0038] 200, support column; 201, first support column; 202, second support column; 203, third support column; 210, diagonal support;

[0039] 300, beam string; 310, limiting ring; 320, reinforcing plate; 330, raised column; 331, limiting portion;

[0040] 400, stringing rope;

[0041] 500, support assembly; 510, first support rod; 511, reinforcing rib; 512, fixing plate; 520, second support rod; 521, slot; 530, third support rod; 531, U-bolt; 540, first connecting plate;

[0042] 610, cross beam; 620, side column; 630, fixing cable;

[0043] 700, inter-row connection assembly; 710, first connecting rod; 720, second connecting rod; 730, cable assembly; 731, first cable; 732, second cable; 740, third connecting rod; 750, wind-resistant cable. DETAILED DESCRIPTION

[0044] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0045] In order to more clearly illustrate the application embodiments or technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0046] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0047] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0048] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the embodiments shown in the drawings, directional indications (such as up, down, left, right, front, and back, etc.) are not absolute but relative when describing the structure and movement of each component, and are not used to limit the direction of the product in actual use.

[0050] In addition, in the description of the present application, ordinal numbers, such as "first", "second", etc., are only used to distinguish and describe related objects, and cannot be understood as indicating or implying the relative importance or order between the related objects.

[0051] like Figures 1 to 4 As shown, in one or more embodiments, the present disclosure provides a flexible photovoltaic system, which includes multiple rows of flexible photovoltaic brackets and a beam-string structure. The multiple rows of flexible photovoltaic brackets are connected by the beam-string structure, and each row of flexible photovoltaic brackets includes a load-bearing cable assembly 100. The beam-string structure includes at least two support columns 200, a beam-string 300, a cable-string 400 and a plurality of support assemblies 500.

[0052] A plurality of load-bearing cable assemblies 100 of the flexible photovoltaic system are arranged at intervals along a first direction, each load-bearing cable assembly 100 includes two load-bearing cables 110 arranged at intervals, the load-bearing cables 110 are extended along a second direction, that is, the second direction is the length direction of the load-bearing cables 110, the first direction is perpendicular to the second direction, that is, the first direction is perpendicular to the length direction of the load-bearing cables 110, and a plurality of load-bearing cable assemblies 100 are arranged at intervals along the first direction perpendicular to the length direction of the load-bearing cables 110, forming a plurality of rows of flexible photovoltaic brackets, Figure 2 The direction indicated by arrow a is the first direction, and the direction indicated by arrow b is the second direction.

[0053] The photovoltaic assembly 10 is installed on the two load-bearing cables 110 of each load-bearing cable assembly 100, and multiple photovoltaic assemblies 10 can be arranged along the length direction of the load-bearing cable 110 to form a row of photovoltaic assemblies. When the photovoltaic assemblies 10 are arranged on multiple load-bearing cable assemblies 100, multiple rows of photovoltaic assemblies can be formed along the first direction, thereby forming a photovoltaic array, which can receive solar radiation over a larger area to improve the power generation efficiency of the photovoltaic system to a greater extent. The specific setting number of the load-bearing cable assembly 100 is not excessively restricted here, and can be flexibly set according to the actual application scenario, which is within the protection scope of this application and will not be excessively elaborated here.

[0054] like Figure 5 As shown, the flexible photovoltaic system also includes a crossbeam 610 and a side column 620. The crossbeam 610 is arranged at the upper end of the side column 620 and extends along the first direction. The two ends of the load-bearing cable 110 are respectively connected to the corresponding crossbeam 610 to fix the load-bearing cable 110. In this embodiment, the flexible photovoltaic system includes two crossbeams 610, which are arranged at intervals along the second direction, and the two crossbeams 610 extend along the first direction respectively, and are correspondingly arranged at the top of the side columns 620 of the multiple rows of flexible photovoltaic brackets, connecting the side columns 620 of the multiple rows of flexible photovoltaic brackets, and connecting the multiple rows of flexible photovoltaic brackets through two crossbeams 610, thereby increasing the strength of the flexible photovoltaic system, and improving the wind resistance and construction convenience of the flexible photovoltaic system.

[0055] Please continue to refer to Figure 5The flexible photovoltaic system also includes a plurality of fixing cable assemblies, which are arranged correspondingly to the plurality of load-bearing cable assemblies 100. A fixing cable assembly is arranged correspondingly at both ends of each load-bearing cable assembly 100. The fixing cable assembly includes two fixing cables 630, one end of the two fixing cables 630 is connected to the cross beam 610, and the other end is connected to the same pile foundation. The two fixing cables 630 are arranged in a V shape, and the two fixing cables 630 and the cross beam 610 cooperate to form a triangular structure. In this arrangement, the two fixing cables 630 share a pile foundation, which reduces the number of pile foundations and reduces costs; at the same time, a stable triangular structure is formed between the fixing cable assembly, the side column 620 and the ground, which improves the stability of the overall structure of the flexible photovoltaic support. Furthermore, the side column 620 is inclined on the ground, and the fixed cable assembly is vertically arranged on the ground. The angle between the side column 620 and the load-bearing cable assembly 100 is equal to the angle between the side column 620 and the fixed cable assembly. The side column 620 simultaneously bears the horizontal tension F1 from the load-bearing cable assembly 100 and the vertical downward tension F2 from the fixed cable assembly. When the angle between the side column 620 and the load-bearing cable assembly 100 is the same as the angle between the side column 620 and the fixed cable assembly, the direction of the resultant force F of the tension F1 and the tension F2 coincides with the axis of the side column 620. The side column 620 is an axially compressed member and is not affected by the horizontal shear force. The side column 620 can be designed without horizontal shear force, which can avoid the risk of damage to the vertical side column 620 caused by horizontal displacement of the foundation caused by excessive horizontal force. By setting two cross beams 610, and setting the side columns 620 obliquely on the ground, and setting the fixed cable assembly vertically on the ground, the angle between the side columns 620 and the load-bearing cable assembly 100 is equal to the angle between the side columns 620 and the fixed cable assembly, and the number of side columns 620 can also be reduced, and the support requirements for the load-bearing cable assembly 100 and the photovoltaic assembly 10 thereon can be met without setting side columns 620 at both ends of each row of flexible photovoltaic brackets. In this embodiment, Figure 5 As shown, in the multiple rows of flexible photovoltaic brackets arranged at intervals along the first direction, in every three rows of flexible photovoltaic brackets, only side columns 620 need to be set at both ends of the front and rear rows of flexible photovoltaic brackets, and the middle row of flexible photovoltaic brackets does not need to be set with side columns 620. This can greatly reduce the production and installation costs of the flexible photovoltaic system and improve the installation efficiency.

[0056] In other embodiments, each row of flexible photovoltaic supports includes two cross beams 610 and two side columns 620. The two cross beams 610 are respectively located at the upper ends of the two side columns 620 of each row of flexible photovoltaic supports, and are arranged one-to-one with the side columns 620. The cross beams 610 on the same side of adjacent rows of flexible photovoltaic supports are arranged at intervals.

[0057] In addition, it should be noted that in the present embodiment, each group of load-bearing cable assemblies 100 may also include three or more load-bearing cables 110, that is, three load-bearing cables 110 or more load-bearing cables 110 are used to jointly support a photovoltaic assembly 10, which can also achieve the purpose of supporting the photovoltaic assembly 10, but it will increase the material cost, which is not conducive to the promotion and application of the product. Therefore, preferably, each group of load-bearing cable assemblies 100 is provided with two load-bearing cables 110 to support the photovoltaic assembly 10, which can not only achieve stable support for the photovoltaic assembly 10, but also save material costs, which is conducive to the promotion and application of the product.

[0058] In this embodiment, the beam string structure includes two support columns 200, and the two support columns 200 of the beam string structure are arranged at intervals along the first direction; the two support columns 200 are respectively arranged on the outer sides of the outermost load-bearing cables 110 along the first direction, so that the support columns 200 do not occupy the space below the load-bearing cables 110, so that the space below the load-bearing cables 110 can be set up as needed. When other items (such as greenhouses) can be set up, the setting width can be increased. The support columns 200 use lattice columns to fully utilize their strong bending resistance and improve the structural strength of the support columns 200. Specifically, in the present embodiment, the support column 200 includes two first support columns 201 arranged opposite to each other and a second support column 202 connecting the two first support columns 201. Both ends of the second support column 202 are fixedly connected to the two first support columns 201 by riveting, welding or bolting. One end of the tension string beam 300 is arranged on the second support column 202 and fixedly connected to the second support column 202 by bolts. A reinforcing pad is further provided between the second support column 202 and the tension string beam 300. At the same time, a rib plate is provided at the corresponding lower part of the connection between the second support column 202 and the tension string beam 300. The rib plate and the reinforcing pad together increase the supporting strength of the second support column 202. One or more third support columns 203 are further provided below the second support column 202. In this embodiment, the number of the third support columns 203 is two, and the two third support columns 203 are arranged in parallel below the second support column 202, and the two ends of the third support column 203 are respectively fixedly connected to the two first support columns 201, so as to further improve the support strength of the support column 200 and ensure the stability of the beam string structure. It should be noted that in other embodiments, when the flexible photovoltaic system includes a large number of flexible brackets, the number of support columns 200 can be 3 or more, and the 3 or more support columns 200 are arranged in sequence along the extension direction of the beam string 300, that is, the first direction. By further arranging one or more support columns 200 between the support columns 200 at both ends, the support capacity of the beam string 300 is improved, thereby improving the strength and stability of the flexible photovoltaic system. In addition, by coordinating the support column 200 and the beam string 300, the number of intermediate columns in the prior art can be eliminated or reduced while ensuring structural stability, which not only reduces production costs but also provides a reliable solution for some areas and projects where intermediate columns cannot be installed due to installation environment restrictions.

[0059] Please refer to Figures 1 to 6, one end of the beam string 300 is fixedly arranged on a support column 200, and the other end is fixedly arranged on another support column 200. The support column 200 supports the beam string 300. The beam string 300 is located in the middle of the load-bearing cable 110 and runs through multiple rows of flexible photovoltaic brackets to support the middle of all the load-bearing cables 110. In addition, a diagonal brace 210 is added between the beam string 300 and the support column 200 to improve the overall stability. Specifically, one end of the diagonal brace 210 is fixed to the support column 200 by bolts, and the other end is fixed to the beam string 300 by bolts. Ear plates fixed to the diagonal brace 210 are respectively provided on the support column 200 and the beam string 300. One end of the diagonal brace 210 is fixedly connected to the ear plate on the support column 200 by bolts, and the other end of the diagonal brace 210 is fixedly connected to the ear plate on the beam string 300 by bolts. In this embodiment, two diagonal braces 210 are respectively provided at each end of the beam string 300, one end of the two diagonal braces 210 is connected to the two first support columns 201 of the support column 200, and the other end is respectively fixedly connected to the beam string 300. The provision of the diagonal braces 210 further enhances the strength of the beam string structure, and improves the stability and wind resistance of the beam string structure.

[0060] Please refer to Figures 3 to 9 A plurality of limit ring assemblies and a plurality of raised columns 330 are arranged at intervals along the first direction on the tension string beam 300, and the plurality of limit ring assemblies and the plurality of raised columns 330 are arranged alternately in sequence. One limit ring assembly and an adjacent raised column 330 correspond to a row of flexible photovoltaic brackets. The two load-bearing cables 110 of each flexible photovoltaic bracket respectively pass through the limit ring assembly and the raised column 330 adjacent to the limit ring assembly. The two load-bearing cables 110 of a row of flexible photovoltaic brackets are limited by the limit ring assembly and the raised column 330. At the same time, the tension string beam 300 can support the middle part of the load-bearing cable 110.

[0061] The protruding column 330 is provided with one or more limiting parts 331 for the load-bearing cable 110 to pass through. The protruding column 330 and the limiting ring assembly are alternately arranged in sequence along the first direction, and one protruding column 330 and one limiting ring assembly are arranged correspondingly to one load-bearing cable assembly 100. In this embodiment, each limiting ring assembly includes two limiting rings 310 arranged along the second direction. The arrangement of the two limiting rings 310 increases the support area of ​​the limiting ring assembly and the load-bearing cable 110, thereby improving the support stability of the load-bearing cable 110.

[0062] In this embodiment, the raised column 330 can be fixed to the tension string beam 300 by bolt connection, riveting or welding, and the limiting portion 331 on the raised column 330 can have the same structure as the limiting ring 310. For example, the limiting portion 331 and the limiting ring 310 can both be eye bolts, and the eye bolts are respectively fixed to the raised column 330 and the tension string beam 300 by bolt connection, riveting or welding, and the load-bearing cable 110 passes through the annular structure of the eye bolt and is limited in the annular structure.

[0063] In this embodiment, one protruding column 330 and one limiting ring assembly correspond to a group of load-bearing cable assemblies 100, each limiting ring assembly includes one or more limiting rings 310, and the multiple limiting rings 310 in each group of limiting ring assemblies are arranged at intervals along the second direction. Exemplarily, two load-bearing cables 110 in a group of load-bearing cable assemblies 100 are respectively a first load-bearing cable 111 and a second load-bearing cable 112, then the first load-bearing cable 111 passes through the limiting portion 331 on the protruding column 330, and the second load-bearing cable 112 passes through a limiting ring assembly, that is, the number of protruding columns 330 is the same as the number of load-bearing cable assemblies 100, and the number of limiting ring assemblies is also the same as the number of load-bearing cable assemblies 100; in other words, the number of protruding columns 330 is the same as the number of first load-bearing cables 111 of the flexible photovoltaic system, and the number of limiting ring assemblies is the same as the number of second load-bearing cables 112 of the flexible photovoltaic system.

[0064] The raised column 330 is protrudingly arranged on the tension string beam 300, and the height of the raised column 330 is higher than the height of the tension string beam 300. The first load-bearing cable 111 passes through the limiting portion 331 on the raised column 330, which can raise the height of the first load-bearing cable 111, that is, the height of the first load-bearing cable 111 is higher than the second load-bearing cable 112. The plane formed by the first load-bearing cable 111 and the second load-bearing cable 112 is at a certain angle to the horizontal plane. When the photovoltaic component 10 is installed on the first load-bearing cable 111 and the second load-bearing cable 112, the photovoltaic component 10 is at a certain angle to the horizontal plane, so that the photovoltaic component 10 can obtain more solar energy, thereby increasing the power generation.

[0065] In this embodiment, the beam string 300 can be made of H-shaped steel or square tube. The main features of H-shaped steel are high strength, good stability, and strong load-bearing capacity. It is often used for main beams and longitudinal supports in large-scale building structures. At the same time, since its shape is similar to the letter "H", H-shaped steel can effectively disperse the load at the bottom and improve the stability and life of the structure, but the cost of H-shaped steel is relatively high; square tubes have the advantages of simple structure, smooth surface, easy processing, and low cost. They are often used for beams and transverse supports in small-scale building structures. Compared with H-shaped steel, square tubes have relatively small load-bearing capacity. However, in some cases, the use of square tubes can effectively reduce costs and improve construction efficiency. Therefore, when the length of the beam string 300 is short, the beam string 300 can use rectangular square tubes. When the length of the beam string 300 is long, the beam string 300 is preferably H-shaped steel. In addition, since it is inconvenient to weld other components on the round tube, and the C-shaped steel is a thin-walled steel with low rigidity, asymmetry on both sides, and poor structural stability, the beam string 300 in this embodiment is preferably not made of a round tube or a C-shaped steel. However, in some special projects, if the requirements for the beam string 300 are not high, the beam string 300 may also be made of a round tube or a C-shaped steel.

[0066] The cable 400 is disposed below the beam string 300, and one end of the cable 400 is fixedly connected to one end of the beam string 300, and the other end of the cable 400 is fixedly connected to the other end of the beam string 300. At least one support assembly 500 is disposed below the beam string 300, and the beam string 300 and the cable 400 are connected through the support assembly 500. In this embodiment, the number of the support assemblies 500 is multiple, so as to further improve the stability of the connection between the beam string 300 and the cable 400. The multiple support assemblies 500 are fixedly disposed below the beam string 300 at intervals along the first direction, the upper end of the support assembly 500 is connected to the load-bearing cable 110, and the lower end of the support assembly 500 abuts against the cable 400 to tension the cable 400.

[0067] In this embodiment, the support assembly 500 connects the beam string 300, the load-bearing cable 110 and the string cable 400, so that the string cable 400, the support assembly 500 and the beam string 300 form a spatial structure to stably support the load-bearing cable 110 and improve the stability of the entire flexible photovoltaic support. The string cable 400 is tensioned by the support assembly 500, and the string cable 400 can form a lower arch structure to play a wind-resistant role. The number of the string cables 400 can be one or more. Preferably, in this embodiment, the number of the string cables 400 is two, and the two string cables 400 are both arranged vertically with the load-bearing cable 110, and are respectively located on both sides below the beam string 300 to improve the wind resistance effect, thereby improving the structural stability.

[0068] In this embodiment, a stable spatial structure can be formed by interconnecting the beam string 300, the cable string 400 and the support assembly 500 to stably support the load-bearing cable 110. While ensuring the stability of the structure, the original intermediate column is eliminated, which not only reduces the production cost, but also provides a reliable solution for some areas and projects where it is impossible to install the intermediate column.

[0069] In some embodiments, Figure 6 and Figure 7 As shown, the support assembly 500 includes a first support rod 510 and a second support rod 520. The upper end of the first support rod 510 is fixedly connected to the tension string beam 300, the lower end of the first support rod 510 is fixedly connected to the second support rod 520, the second support rod 520 is fixedly connected to the lower end of the first support rod 510, and both ends of the second support rod 520 are respectively connected to the tension string cable 400, so as to tension the tension string cable 400. The second support rod 520 is extended along the second direction.

[0070] Further, such as Figure 7 As shown, a reinforcing plate 320 is provided at the position where the beam string 300 is connected to the first strut 510; and / or, a reinforcing rib 511 is provided on the side wall of one end where the first strut 510 is connected to the beam string 300. Specifically, the beam string 300 and the first strut 510 can be fixedly connected by bolts or welding, and a reinforcing plate 320 is provided at the position where the beam string 300 and the first strut 510 are connected. Specifically, the beam string 300 is an H-shaped steel, and a fixing plate 512 is provided at the top of the upper end of the first strut 510. The fixing plate 512 is fixedly connected to the bottom of the beam string 300. The reinforcing plate 320 is provided on both sides above the connection between the beam string 300 and the fixing plate 512 of the first strut 510, which can increase the structural strength of the connection. Similarly, reinforcing ribs 511 are evenly distributed in the circumferential direction below the fixing plate 512 of the first strut 510 to further increase the strength and ensure the stability of the structure.

[0071] The lower end of the first support rod 510 is provided with a second support rod 520. In this embodiment, the first support rod 510 and the second support rod 520 are preferably round tubes, which have stronger axial pressure resistance. In addition to round tubes, the first support rod 510 and the second support rod 520 can also be square tubes or H-shaped steels.

[0072] A slot 521 is provided at the bottom of the second support rod 520, and the string cable 400 is disposed in the slot 521. When the number of the string cables 400 is more than two, a plurality of slots 521 are also provided at intervals along the second direction on the second support rod 520, and each string cable 400 is disposed in one slot 521. The slot 521 can limit the string cable 400 so that the string cable 400 is tensioned and prevents the string cable 400 from moving on the second support rod 520. In this embodiment, the number of the string cables 400 is two, and the two string cables 400 are correspondingly provided below the two ends of the second support rod 520, and slots 521 corresponding to the string cables 400 are provided at the two ends of the second support rod 520.

[0073] In some embodiments, a third support rod 530 is provided at both ends of the second support rod 520, one end of the third support rod 530 is connected to the second support rod 520, and the other end is connected to the load-bearing cable 110, so as to connect the load-bearing cable 110 and the tensioning cable 400. Figure 6 and Figure 7 As shown, there are four third braces 530, two of which are fixedly connected to one end of the second brace 520 and arranged in a V shape, and the other two third braces 530 are fixedly connected to the other end of the second brace 520 and arranged in a V shape. The four third braces 530 can be symmetrically arranged on both sides of the tension beam 300 to enhance the out-of-plane stability of the steel beam. The upper ends of the four third braces 530 are respectively connected to the corresponding load-bearing cables 110. In this embodiment, Figure 7 As shown, a first connecting plate 540 may be provided at one end of the second brace 520, and a second connecting plate may be provided at the other end of the second brace 520, wherein two third brace rods 530 are respectively fixedly connected to the first connecting plate 540, and the other two third brace rods 530 are respectively fixedly connected to the second connecting plate. The first connecting plate 540 and the second connecting plate are respectively fixedly connected to the third brace rod 530 by welding, and bending parts connected to the corresponding third brace rod 530 are respectively provided at both ends of the first connecting plate 540 and the second connecting plate. The third brace rod 530 is fixedly connected to the bending parts by welding, riveting or bolting, so that the third brace rod 530 is fixedly connected to the second brace rod 520 through the first connecting plate 540 and the second connecting plate, so that the string beam 300, the first brace rod 510, the second brace rod 520, the third brace rod 530 and the string cable 400 form a spatial structure, thereby improving the stability of the flexible photovoltaic system.

[0074] In one example, four third support rods 530 support one load-bearing cable 110 in each of two adjacent groups of load-bearing cable assemblies 100 to increase the stability of the entire flexible photovoltaic system. Exemplarily, the first load-bearing cable 111, the second load-bearing cable 112, the third load-bearing cable 113 and the fourth load-bearing cable are arranged adjacent to each other in sequence along the first direction, wherein the first load-bearing cable 111 and the second load-bearing cable 112 are two load-bearing cables 110 in one group of load-bearing cable assemblies 100, the third load-bearing cable 113 and the fourth load-bearing cable are two load-bearing cables 110 in another adjacent group of load-bearing cable assemblies 100, two of the four third support rods 530 support the second load-bearing cable 112, and the other two third support rods 530 support the third load-bearing cable 113.

[0075] In another example, four third support rods 530 can support two load-bearing cables 110 of the same group of load-bearing cable assemblies 100 to increase the stability of the single-row flexible photovoltaic support. Exemplarily, the two load-bearing cables 110 of each group of load-bearing cable assemblies 100 are respectively the first load-bearing cable 111 and the second load-bearing cable 112, two third support rods 530 support the first load-bearing cable 111, and the other two third support rods 530 support the second load-bearing cable 112.

[0076] In some embodiments, the third support rod 530 is slidably connected to the load-bearing cable 110, and a limiting structure is provided on the third support rod 530 to allow the load-bearing cable 110 to pass through, such as Figure 8As shown, for example, each third support rod 530 is an angle steel, and a U-bolt 531 is provided on the upper side wall of the third support rod 530 to allow the load-bearing cable 110 to pass through. The two legs of the U-bolt 531 pass through the side wall of the third support rod 530 and are fastened by nuts. The load-bearing cable 110 passes through the U-bolt 531 on the corresponding third support rod 530, and the load-bearing cable 110 is limited in the U-shaped groove of the U-bolt 531, and the load-bearing cable 110 is fixed in the U-shaped groove of the U-bolt 531. The bolt 531 can slide relative to the third support rod 530. The U-bolt 531 provided on the third support rod 530 is at the same height as the corresponding limiting ring 310 or limiting portion 331 on the protruding column 330 on the beam string 300, thereby ensuring that the load-bearing cable 110 passing through the U-bolt 531 and the limiting ring 310 or the load-bearing cable 110 passing through the U-bolt 531 and the limiting portion 331 remains horizontal, thereby reducing the bending deformation of the load-bearing cable 110. The third support rod 530 is provided to increase the upward support force of the load-bearing cable 110 on both sides of the beam string 300 and close to the beam string 300, thereby reducing the friction between the load-bearing cable 110 and the beam string 300 caused by the downward bending deformation of the load-bearing cable 110 due to the gravity of the photovoltaic module 10 above. The third support rod 530 is symmetrically provided on both sides of the beam string 300, thereby ensuring the balance of force on the load-bearing cable 110, thereby further improving the stability of the flexible photovoltaic system. In addition, the load-bearing cable 110 of this embodiment can slide relative to the third support rod 530, so that the load-bearing cable 110 can produce a certain displacement when affected by external factors such as strong wind, thereby avoiding the load-bearing cable 110 from being broken due to being unable to move, thereby increasing the service life of the load-bearing cable 110; at the same time, the third support rod 530 plays a supporting and limiting role for the load-bearing cable 110, thereby enhancing the structural stability; in addition, when the load-bearing cable 110 passes through the limiting ring 310 above the tension string beam 300 and the limiting portion 331 on the protruding column 330, under the action of external factors, the load-bearing cable 110 will be in contact with the limiting ring 310. The friction between the load-bearing cable 110 and the limiting part 331 on the protruding column 330 is generated by adding four third support rods 530 outside the tension string beam 300, and the load-bearing cable 110 slides relative to the four third support rods 530, which not only supports the load-bearing cable 110, but also further limits the range of motion of the load-bearing cable 110, thereby reducing the friction between the load-bearing cable 110 and the limiting ring 310 above the tension string beam 300, and between the load-bearing cable 110 and the limiting part 331 on the protruding column 330, thereby reducing the wear of the load-bearing cable 110 and increasing the service life of the load-bearing cable 110. In other embodiments, the U-bolt 531 can also be replaced by a lifting eye bolt structure, which is fixed on the third support rod 530, and the load-bearing cable 110 is limited in the lifting eye of the lifting eye bolt; in another embodiment, the U-bolt 531 can also be replaced by a semi-annular structure, which is directly welded to the third support rod 530. Similarly, the third support rod 530 may also be a square tube or a round tube structure, which can achieve the same technical effect and will not be described in detail here.

[0077] In some embodiments, Fig. 9 As shown, the flexible photovoltaic system further includes a plurality of conical connecting frames 120, the load-bearing cable assembly 100 further includes a stabilizing cable 140, the stabilizing cable 140 is arranged below the load-bearing cable 110, each flexible photovoltaic bracket includes a load-bearing cable 110 arranged above and a stabilizing cable 140 arranged below, and each flexible photovoltaic bracket is provided with a plurality of conical connecting frames 120 at intervals along the second direction, the conical connecting frames 120 connect the load-bearing cable 110 above and the stabilizing cable 140 below, thereby increasing the stability and wind resistance of the flexible photovoltaic bracket. The conical connecting frames 120 on adjacent rows of flexible photovoltaic brackets are arranged correspondingly in the first direction, the conical connecting frames 120 include a plurality of connecting rods 130, the plurality of connecting rods 130 are connected to each other to form a conical structure, the conical connecting frame 120 has at least four vertices, each load-bearing cable 110 and the stabilizing cable 140 are respectively connected to at least one vertex, and the number of vertices connected to the load-bearing cable 110 is not less than the number of vertices connected to the stabilizing cable 140.

[0078] Specifically, the conical connecting frame 120 is a triangular pyramid, a quadrangular pyramid, a pentagonal pyramid or other polygonal pyramid structure. In the present embodiment, the conical connecting frame 120 is a triangular pyramid structure. The conical connecting frame 120 includes a first vertex 121, a second vertex 122, a third vertex 123 and a fourth vertex 124. The first vertex 121, the second vertex 122 and the third vertex 123 are coplanar, and the first vertex 121 is connected to a load-bearing cable 110, the second vertex 122 and the third vertex 123 are respectively connected to another load-bearing cable 110, and the fourth vertex 124 is located below the load-bearing cable 110 and is connected to the stabilizing cable 140. The conical connecting frame 120 includes six connecting rods 130, and the six connecting rods 130 are interconnected by fasteners such as eye bolts to form a triangular pyramid structure. The six connecting rods 130 are connected to each other to form four vertices, namely the first vertex 121, the second vertex 122, the third vertex 123 and the fourth vertex 124. The first vertex 121, the second vertex 122 and the third vertex 123 are located on the same plane, and the fourth vertex 124 is located below the plane formed by the first vertex 121, the second vertex 122 and the third vertex 123. Assuming that each group of load-bearing cable assemblies 100 includes a first load-bearing cable 111 and a second load-bearing cable 112, the first vertex 121 is fixedly connected or slidably connected to the first load-bearing cable 111, and the second vertex 122 and the third vertex 123 are fixedly connected or slidably connected to the second load-bearing cable 112, respectively. Further, as Fig. 9As shown, it also includes a plurality of inter-row connection assemblies 700, which are arranged between two adjacent conical connecting frames 120 arranged along the first direction, and the inter-row connection assemblies 700 include a first connecting rod 710 and a second connecting rod 720, one end of the first connecting rod 710 and one end of the second connecting rod 720 are respectively connected to the fourth vertex 124 of one conical connecting frame 120, the other end of the first connecting rod 710 is connected to the second vertex 122 of the corresponding adjacent row of conical connecting frames 120, and the other end of the second connecting rod 720 is connected to the third vertex 123 of another conical connecting frame 120. By arranging the inter-row connection assemblies 700 between two adjacent conical connecting frames 120, the stability between the multiple rows of load-bearing cable assemblies 100 can be improved, and the wind resistance of the flexible photovoltaic system can be further improved.

[0079] For further information, please continue to refer to Fig. 9 As shown, the inter-row connection assembly 700 also includes a third link 740, both ends of which are respectively connected to the corresponding conical connecting frames 120 of adjacent rows of flexible photovoltaic supports, and one end of the third link 740 is connected to the load-bearing cable 110 of a flexible photovoltaic support, and the other end of the third link 740 is connected to the stabilizing cable 140 of another adjacent flexible photovoltaic support. The number of third links 740 between the corresponding conical connecting frames 120 of adjacent rows is one, one end of the third link 740 is connected to the first vertex 121 of one of the conical connecting frames 120, and the other end of the third link 740 is connected to the fourth vertex 124 of the adjacent row of conical connecting frames 120, and the third link 740 is located between the first link 710 and the second link 720.

[0080] The inter-row connection assembly 700 also includes an anti-wind cable 750, which extends along the first direction and sequentially connects the fourth vertices 124 of the corresponding conical connecting frames 120 of multiple rows of flexible photovoltaic brackets. Specifically, the anti-wind cable 750 sequentially passes through the lifting rings at the fourth vertices 124 of the corresponding conical connecting frames 120 of multiple rows of flexible photovoltaic brackets, and the two ends of the anti-wind cable 750 are fixed to the lifting rings at the fourth vertices 124 of the conical connecting frames 120 of the first and last rows of photovoltaic brackets. In this embodiment, the ends of the anti-wind cable 750 are folded and fixed after passing through the lifting rings. By connecting two adjacent conical connecting frames 120 along the first direction into a whole, and then sequentially connecting multiple conical connecting frames 120 to each other, it is possible to jointly resist wind force and improve the wind resistance of the entire flexible photovoltaic array in the second direction.

[0081] Further, such as Figure 1 and Figure 2As shown, the inter-row connection assembly 700 also includes a plurality of cable assemblies 730, which are arranged at the conical connection frame 120 of the first row and the last row of flexible photovoltaic brackets of the flexible photovoltaic system, and the cable assembly 730 includes a first cable assembly and a second cable assembly, one end of the first cable assembly and the second cable assembly are both connected to the same conical connection frame 120, and the other ends of the first cable assembly and the second cable assembly are respectively connected to a fixed point, the first cable assembly and the second cable assembly are symmetrically arranged relative to the conical connection frame 120, and the first cable assembly and the second cable assembly are arranged in an inverted V shape in the vertical direction, that is, the distance between the first cable assembly and the second cable assembly connected to the conical connection frame 120 is less than the distance between the other ends of the first cable assembly and the second cable assembly connected to the fixed point. In this embodiment, the fixed point is a pile foundation arranged on the ground, and in other embodiments, the fixed point can also be the ground. In this way, the conical connecting frame 120, the first connecting rod 710, the second connecting rod 720, the third connecting rod 740 and the wind-resistant cable 750 are indirectly connected and fixed to the ground along the first direction, and a stable triangular structure is formed between the first cable assembly, the second cable assembly and the ground, further improving the wind resistance of the entire flexible photovoltaic system in the first direction.

[0082] Specifically, see Figure 1 , Figure 2 , Fig.10 and Fig.11 As shown, in this embodiment, the first cable assembly includes two first cables 731, and the second cable assembly includes two second cables 732. The upper ends of the two first cables 731 are respectively connected to the second vertex 122 and the fourth vertex 124 of the conical connecting frame 120, and the lower ends of the two first cables 731 are connected to the same fixed point, and the two first cables 731 are arranged in a V shape in the vertical direction; the upper ends of the two second cables 732 are respectively connected to the third vertex 123 and the fourth vertex 124 of the conical connecting frame 120, and the lower ends of the two second cables 732 are connected to the same fixed point, and the two second cables 732 are arranged in a V shape in the vertical direction. In this way, the first cable assembly and the second cable assembly are symmetrically arranged, and a stable triangular structure is formed between the two first cables 731 and the conical connecting frame 120. A stable triangular structure is also formed between the two second cables 732 and the conical connecting frame 120, and the upper and lower ends of the conical connecting frame 120 are connected to the ground, which can withstand strong winds and provide effective support for the conical connecting frame 120 and the photovoltaic assembly 10, thereby enhancing the stability and wind resistance of the flexible photovoltaic array.

[0083] In other embodiments, the distance between one end of the first cable 731 and the second cable 732 connected to the conical connecting frame 120 is greater than the distance between the other ends of the first cable 731 and the second cable 732 connected to the fixed point. Furthermore, the other ends of the first cable 731 and the second cable 732 are connected to the same fixed point. In this way, the first cable 731 and the second cable 732 are arranged in a V shape, and a stable triangular structure is formed between the first cable 731, the second cable 732 and the conical connecting frame 120, which can also improve the stability and wind resistance of the flexible photovoltaic array. It should be noted that the fixed point mentioned above can be a pile foundation set on the ground, or it can be the ground. That is, the first cable assembly and the second cable assembly can be fixed on different pile foundations, or they can be directly fixed to different positions on the ground through connectors such as eye bolts.

[0084] The flexible photovoltaic system of this embodiment connects multiple rows of flexible photovoltaic brackets into a whole through a beam string structure, which reduces the deformation of the load-bearing cables and the damage of the photovoltaic components on the load-bearing cables under the influence of external strong winds, and greatly improves the stability and wind resistance of the flexible photovoltaic system. In addition, the self-balancing system of the beam string structure replaces the original center beam + center column structure, which not only greatly reduces the number of intermediate columns and reduces the overall project cost and construction cost, but also provides a reliable solution for some areas and projects where the center column cannot be installed.

[0085] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0086] It should be noted that the above embodiments can be freely combined as needed. The above is only the preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A beam string structure, used to connect multiple rows of flexible photovoltaic brackets spaced apart along a first direction, wherein the flexible photovoltaic bracket comprises a load-bearing cable assembly, wherein the load-bearing cable assembly comprises a load-bearing cable extending along a second direction, wherein the first direction is perpendicular to the second direction, and wherein: include: At least two support columns are spaced apart along the first direction; A string beam fixedly disposed on top of at least two of the support columns; A tension cable, disposed below the tension beam, with one end of the cable fixedly connected to one end of the tension beam, and the other end of the cable fixedly connected to the other end of the tension beam; At least one support assembly is fixedly disposed on the beam string, the upper end of the support assembly is used to be connected to the load-bearing cable, and the lower end of the support assembly is used to abut against the beam string.

2. The beam string structure according to claim 1, characterized in that: The support assembly includes a first strut and a second strut, the upper end of the first strut is fixedly connected to the tension beam, the second strut is fixedly connected to the lower end of the first strut, and the second strut is extended along the second direction.

3. The beam string structure according to claim 2, characterized in that: The support assembly also includes a third strut, the lower end of the third strut is fixedly connected to the second strut, and the upper end of the third strut is used to connect the load-bearing cable assembly of the flexible photovoltaic bracket; the number of the third struts is four, two of which are respectively fixedly connected to one end of the second strut and arranged in a V shape, and the other two are respectively fixedly connected to the other end of the second strut and arranged in a V shape, and the upper ends of the four third struts are respectively connected to the corresponding load-bearing cables.

4. The beam string structure according to claim 3, characterized in that: The four third struts are used to connect the load-bearing cables of two adjacent groups of the load-bearing cable assemblies; or, the four third struts are used to connect the load-bearing cables of the same group of the load-bearing cable assemblies.

5. The beam string structure according to claim 3, characterized in that: The third brace is an angle steel, square tube or round tube structure, and a limiting structure for allowing the load-bearing cable to pass through is provided on the third brace. The third brace is slidably connected to the load-bearing cable via the limiting structure.

6. The beam string structure according to claim 5, characterized in that: The limiting structure is a U-shaped bolt, a lifting eye bolt or a semi-annular structure.

7. The beam string structure according to claim 2, characterized in that: A reinforcing plate is provided at the connection position between the beam string and the first strut; and / or; A reinforcing rib is provided on the side wall of one end of the first brace connected to the beam string; and / or; The second support rod is provided with a slot, and the string cable is arranged in the slot.

8. The beam string structure according to any one of claims 1 to 7, characterized in that: A plurality of raised columns and limit ring assemblies are arranged on the tension beam at intervals along the first direction, and a limit portion is provided on the raised column for the load-bearing cable to pass through. The raised columns and the limit ring assemblies are alternately arranged in sequence along the first direction, and one raised column and one limit ring assembly are arranged correspondingly to one load-bearing cable assembly, wherein each limit ring assembly includes one or more limit rings arranged along the second direction.

9. The beam string structure according to claim 1, characterized in that: The support column is a lattice column, and an oblique brace is provided between the support column and the beam string, one end of the oblique brace is fixedly connected to the beam string, and the other end of the oblique brace is fixedly connected to the support column.

10. A flexible photovoltaic system, characterized in that: It comprises a plurality of rows of flexible photovoltaic supports and a beam string structure as claimed in any one of claims 1 to 9, wherein the plurality of rows of flexible photovoltaic supports are arranged at intervals along a first direction, and the beam string structure connects the plurality of rows of flexible photovoltaic supports.

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