A flexible photovoltaic support for channel topography

Abstract

The utility model relates to flexible photovoltaic support technical field, especially the flexible photovoltaic support for channel topography, including two end supports, a plurality of middle supports and upper support, wherein, end support is arranged at the first end and the terminal of channel respectively, a plurality of middle supports are arranged in the middle area of channel along the length direction interval, upper support includes a plurality of load cable groups along the length direction extension of channel and a plurality of connecting pieces along the width direction extension of channel, and connecting piece is fixedly connected with load cable group, forms the grid structure, and load cable group is fixed in middle support top, and its both ends are fixedly connected with an end support respectively, and its top is used for fixing photovoltaic module, the utility model provides a kind of flexible photovoltaic support for channel topography, it can effectively reduce support density, reduce the disturbance to channel bank under the premise of guaranteeing structure safety, adapt to channel width change, and give consideration to construction convenience and operation and maintenance demand.

Description

Technical Field

[0001] This utility model relates to the field of flexible photovoltaic support technology, and in particular to a flexible photovoltaic support for channel terrain. Background Technology

[0002] Flexible photovoltaic (PV) support structures utilize high-strength steel cables as the main load-bearing components. By applying prestress, they form a spatial cable system with a certain rigidity, enabling large spans and significantly reducing the number of intermediate support points. This makes them suitable for terrain obstacles such as lakes, fishponds, and valleys. For example, there is a flexible PV support structure in the prior art (authorization announcement number CN220511013U).

[0003] When applying existing flexible photovoltaic supports on narrow linear terrains such as channels, drainage ditches, and water conveyance corridors, the common arrangement is to arrange the load-bearing cables perpendicular to the channel direction and set up support structures on both sides of the channel to form a single-span or multi-span transverse span structure.

[0004] While this arrangement allows photovoltaic arrays to span channels, each span requires supporting structures and foundations on both banks of the channel, resulting in a large number of supports, high steel consumption, and a significant increase in foundation work, especially on long-distance channels where the workload is enormous. The insertion of numerous piles or independent foundations into the channel bank slopes can easily disturb the original soil structure, reduce the slope's anti-sliding stability, and pose safety hazards. Furthermore, the dense supporting structures hinder dredging and maintenance operations within the channel, and in some cases, restrict traffic flow along the channel banks, making it difficult to meet the operation and maintenance needs of water conservancy facilities. Utility Model Content

[0005] In view of this, this utility model proposes a flexible photovoltaic support for channel topography, which can effectively reduce support density, reduce disturbance to the channel bank, adapt to changes in channel width, and take into account both construction convenience and operation and maintenance needs, while ensuring structural safety. It solves the problems of existing flexible photovoltaic supports that are arranged vertically to the channel, resulting in a large number of support structures, large foundation engineering volume, impact on the stability of the channel bank slope, and hindrance to normal channel operation and maintenance.

[0006] The technical solution of this utility model is implemented as follows:

[0007] This utility model provides a flexible photovoltaic support for canal terrain, comprising two end supports, multiple middle supports, and an upper support, wherein...

[0008] The end supports are respectively disposed at the beginning and end of the channel, and a plurality of the middle supports are disposed at intervals along the length of the channel in the middle region of the channel, and the end supports and the middle supports span the channel;

[0009] The upper support includes multiple load-bearing cable groups extending along the length of the channel and multiple connectors extending along the width of the channel. The connectors are fixedly connected to the load-bearing cable groups to form a grid structure.

[0010] The load-bearing cable assembly is fixed to the top of the central support, and each end of the cable assembly is fixedly connected to an end support, the top of which is used to fix the photovoltaic module.

[0011] Based on the above technical solutions, preferably, the end support includes a concrete foundation and a gantry frame, wherein,

[0012] The gantry frame is fixed to the concrete foundation, and the load-bearing cable group is fixedly connected to its top.

[0013] The concrete foundation is fixed to the ground.

[0014] Based on the above technical solutions, preferably, the central support includes a central column and a crossbeam, wherein,

[0015] The crossbeam is fixed to the central column, and the top of the crossbeam is fixedly connected to the load-bearing cable group;

[0016] The central column is fixed to the ground.

[0017] Based on the above technical solutions, preferably, the crossbeam is a hollow plate-like structure.

[0018] Based on the above technical solutions, preferably, it also includes two side stabilizing cables, wherein,

[0019] The two side stabilizing cables are symmetrically arranged on both sides of the upper support with the channel as the axis of symmetry.

[0020] Each of the side stabilizing cables extends along the length of the channel and alternately connects the bottom of the end support, the outer edge of the upper support, and the bottom of the middle support in sequence, forming a spatial zigzag structure.

[0021] Based on the above technical solutions, preferably, each set of load-bearing cable groups includes three cables, wherein,

[0022] The three cables are arranged sequentially from top to bottom in a triangular pattern.

[0023] The three cables are fixedly connected to the end support and the middle support, and the tops of the two upper cables are used to fix the photovoltaic module.

[0024] Each of the connectors includes two connecting cables and multiple triangular retainers, wherein,

[0025] Each of the aforementioned triangular retainers corresponds to one of the multiple load-bearing cable assemblies;

[0026] The two connecting cables are spaced apart vertically and are fixedly connected by the triangular retainer.

[0027] The three cables in each load-bearing cable group pass through the triangular retainer at the corresponding positions.

[0028] Based on the above technical solution, preferably, the triangular retainer is provided with a through hole for the cable to pass through, wherein,

[0029] The through hole is provided with a threaded hole on its side, and a set screw is screwed into the threaded hole;

[0030] One end of the set screw abuts against the outer surface of the cable.

[0031] Based on the above technical solution, preferably, a soft bushing is provided between the cable and the through hole, wherein,

[0032] The soft bushing is embedded in the through hole, and the outer walls at both ends are fixedly connected to the hole wall of the through hole;

[0033] The set screw is pressed against the cable by the soft bushing.

[0034] Based on the above technical solutions, preferably, the outer diameter of the cable is smaller than the inner diameter of the soft bushing.

[0035] Based on the above technical solutions, preferably, a plastic gasket is fixed to one end of the top screw that abuts against the cable.

[0036] The flexible photovoltaic support for canal terrain proposed in this invention has the following advantages over the prior art:

[0037] (1) By arranging the load-bearing cable assemblies along the length of the channel, the load-bearing cable assemblies can achieve a longitudinal span of ultra-large span between the two end supports at the beginning and end of the channel, with only a small number of intermediate supports set at intervals along the channel direction required for support in the middle. This structure can significantly reduce the density of the support structure in the transverse direction of the channel bank, greatly reduce the number of supports, the amount of steel used and the amount of foundation engineering, effectively reduce the disturbance to the soil of the channel bank slope, and improve the anti-sliding stability of the slope. At the same time, the sparse support layout can also provide sufficient space for dredging, maintenance and other operation and maintenance work in the channel, as well as traffic on the channel bank.

[0038] (2) The upper support, end supports, and middle supports are tightly connected into a whole in the lateral direction by setting up a spatial broken line structure formed by stabilizing cables. This three-dimensional spatial constraint significantly enhances the lateral stiffness and overall stability of the entire support system in the direction perpendicular to the channel, effectively resists asymmetrical or lateral loads such as wind loads and snow loads, prevents lateral instability or torsional deformation of the structure, makes up for the lack of lateral stiffness of large-span flexible structures, and ensures the safe and reliable operation of the photovoltaic array.

[0039] (3) By setting the load-bearing cable group to include three cables arranged in a triangle, the structural stiffness and bending resistance of the load-bearing cable group in the vertical plane are improved, enabling it to more effectively bear the weight of the photovoltaic module and maintain good alignment. At the same time, the connecting cables and triangular retainers in the connectors are used to firmly integrate the connectors along the width direction with multiple sets of load-bearing cables along the length direction, forming a stable and reliable grid-like upper support. This integrated structure ensures the flatness and integrity of the photovoltaic module mounting surface, while the triangular retainers, as connecting nodes, ensure the accuracy and stability of the relative positions between the cables.

[0040] (4) By using the top screw to hold the cable, the slippage of the cable caused by vibration or stress relaxation during long-term operation can be effectively suppressed, which significantly improves the reliability and durability of the connection node. At the same time, a soft bushing or plastic gasket is set between the top screw and the cable to form a flexible protective layer, avoiding direct contact and squeezing of metal parts, effectively preventing wear and damage to the waterproof outer skin and anti-corrosion layer of the cable, thereby extending the service life of the cable. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a perspective view of a flexible photovoltaic support for canal terrain according to the present invention;

[0043] Figure 2 A three-dimensional view of the end support area;

[0044] Figure 3 A three-dimensional view of the central support area;

[0045] Figure 4 for Figure 1 A partial top view;

[0046] Figure 5 for Figure 1A partial front view;

[0047] Figure 6 This is a side view of the end support area;

[0048] Figure 7 This is a side view of the central support area;

[0049] Figure 8 This is a side view of the upper support area;

[0050] Figure 9 This is a schematic diagram of the force transmission path;

[0051] Figure 10 A three-dimensional view of the triangular cage region;

[0052] Figure 11 for Figure 10 A partial 3D view;

[0053] Figure 12 This is a schematic diagram of the set screw structure;

[0054] In the diagram: 1. End support; 2. Middle support; 3. Upper support; 4. Side stabilizing cable; 8. Photovoltaic module; 9. Channel; 11. Concrete foundation; 12. Gantry frame; 21. Central column; 22. Crossbeam; 31. Load-bearing cable assembly; 32. Connector; 311. Cable; 321. Connecting cable; 322. Triangular retainer; 32201. Through hole; 32202. Threaded hole; 3221. Set screw; 3222. Soft bushing; 32211. Plastic gasket. Detailed Implementation

[0055] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0056] like Figure 1-12 As shown, this utility model provides a flexible photovoltaic support for canal terrain, comprising two end supports 1, multiple middle supports 2, and an upper support 3.

[0057] The end supports 1 are respectively located at the beginning and end of the channel 9, and multiple middle supports 2 are spaced apart along the length of the channel 9 in the middle region of the channel 9. The end supports 1 and the middle supports 2 span the channel 9. The upper support 3 includes multiple load-bearing cable assemblies 31 extending along the length of the channel 9 and multiple connectors 32 extending along the width of the channel 9. The connectors 32 are fixedly connected to the load-bearing cable assemblies 31 to form a grid structure. The load-bearing cable assemblies 31 are fixed to the top of the middle supports 2, and each end is fixedly connected to an end support 1. The top of the end support 31 is used to fix the photovoltaic module 8.

[0058] In this structure, by arranging the load-bearing cable assemblies 31 along the length of the channel 9, the load-bearing cable assemblies 31 can achieve a longitudinal span of ultra-large span between the two end supports 1 at the beginning and end of the channel 9, with only a few intermediate supports 2 set at intervals along the direction of the channel 9 required for support in the middle. Therefore, in application, the density of the support structure in the transverse direction of the channel bank can be significantly reduced, greatly reducing the number of supports, steel consumption, and foundation engineering, effectively mitigating the disturbance to the soil of the channel bank slope, and improving the anti-sliding stability of the slope; at the same time, the sparse support layout provides ample space for dredging, maintenance and other operation and maintenance work in the channel, as well as for traffic on the channel bank, solving the problems of large engineering volume, safety hazards and operation and maintenance difficulties caused by dense supports in the existing technology.

[0059] In the aforementioned flexible photovoltaic support structure, the end support 1 includes a concrete foundation 11 and a gantry frame 12. The gantry frame 12 is fixed to the concrete foundation 11, and its top is fixedly connected to a load-bearing cable assembly 31. The concrete foundation 11 is fixed to the ground.

[0060] Among them, the end support 1, which is composed of concrete foundation 11 and gantry 12, is structurally stable and reliable. It can effectively withstand the huge longitudinal tension and bending moment applied by the load-bearing cable group 31, ensuring the structural safety of the entire support system at the two key anchor points at the beginning and end of the channel 9, and providing a solid foundation for achieving large-span longitudinal crossing.

[0061] In the aforementioned flexible photovoltaic support structure, the central support 2 includes a central column 21 and a crossbeam 22. The crossbeam 22 is fixed to the central column 21, and its top is fixedly connected to a load-bearing cable assembly 31. The central column 21 is fixed to the ground.

[0062] The central support 2 adopts a combined structure of central column 21 and crossbeam 22, which is simple in construction and easy to install. This structure can effectively support and position the load-bearing cable group 31, ensuring its elevation and alignment in the central area of ​​channel 9, while maintaining the sparseness of support points, effectively reducing the amount of work and facilitating maintenance.

[0063] Furthermore, the crossbeam 22 is a hollow plate-like structure, which significantly reduces its weight while ensuring its necessary load-bearing capacity, thereby lowering material costs and simplifying transportation and installation. Simultaneously, the hollow structure effectively reduces the lateral force of wind loads on the support system, improving the overall structure's wind resistance and reducing obstruction to water or air flow within the channel 9. Based on this effect, the main structure of the gantry frame 12 also adopts a hollow design, with its main body being a rectangular frame structure supported by column-like supports at both ends. The frame and supports together constitute the gantry frame 12, which is fixed to the concrete foundation 11.

[0064] In the structure of the upper support 3 described above, each set of load-bearing cable groups 31 includes three cables 311, which are arranged sequentially from top to bottom in a triangular pattern. The three cables 311 are fixedly connected to the end support 1 and the middle support 2, and the tops of the two upper cables 311 are used to fix the photovoltaic module 8.

[0065] Each connector 32 includes two connecting cables 321 and multiple triangular retainers 322, wherein the multiple triangular retainers 322 correspond one-to-one with multiple load-bearing cable assemblies 31. The two connecting cables 321 are arranged vertically at intervals and are fixedly connected by the triangular retainers 322. The three tension cables 311 in each load-bearing cable assembly 31 pass through the triangular retainers 322 at the corresponding positions, achieving rigid spatial integration.

[0066] In this structure, the three cables 311 are arranged in a triangular pattern, significantly improving the structural stiffness and bending resistance of the load-bearing cable group 31 in the vertical plane, enabling it to more effectively bear the weight of the photovoltaic module 8 and maintain good alignment. Simultaneously, the connecting cable 321 and the triangular retainer 322 in the connector 32 firmly integrate the connector 32 along the width direction with multiple load-bearing cable groups 31 along the length direction, forming a stable and reliable grid-like upper support 3. This ensures the flatness and integrity of the photovoltaic module 8 mounting surface, and the triangular retainer 322, as a key connection node, guarantees the accuracy and stability of the relative positions between the cables.

[0067] In addition, the two cables 311 above form a virtual mounting plane facing the direction of solar incidence. The photovoltaic module 8 is installed on this plane, which helps to improve the solar radiation reception efficiency of the photovoltaic module 8 and enhance its power generation performance.

[0068] In the structure of the aforementioned connector 32, the triangular retainer 322 has a through hole 32201 for the cable 311 to pass through. The through hole 32201 has a threaded hole 32202 on its side, and a set screw 3221 is screwed into the threaded hole 32202. One end of the set screw 3221 abuts against the outer surface of the cable 311. Similarly, the connecting cable 321 and the triangular retainer 322 are connected and fixed in the same manner.

[0069] This structure provides a simple, reliable, and adjustable method for fixing the cable 311. By tightening the set screw 3221, the cable 311 can be precisely pre-tightened and its position finely adjusted to ensure that the load-bearing cable assembly 31 reaches the design tension and guarantee structural performance. At the same time, the tightening effect of the set screw 3221 can effectively prevent the cable 311 from slipping due to vibration or slack during operation, thus improving the reliability and long-term stability of the connection.

[0070] Furthermore, a soft bushing 3222 is provided between the cable 311 and the through hole 32201. The soft bushing 3222 is made of either soft plastic or rubber and is embedded in the through hole 32201. The outer walls of its two ends are fixedly connected to the hole wall of the through hole 32201. The set screw 3221 is pressed against the cable 311 by the soft bushing 3222.

[0071] The soft bushing 3222 forms a protective barrier between the metal set screw 3221, through hole 32201, and cable 311. This not only effectively prevents the edges of the set screw 3221 and through hole 32201 from wearing and damaging the galvanized or anti-corrosion coating on the surface of the cable 311, extending the service life of the cable 311, but also plays a certain role in buffering and vibration reduction, reducing stress concentration, and further improving the durability of the connection node.

[0072] The outer diameter of the cable 311 is smaller than the inner diameter of the soft bushing 3222, allowing the cable 311 to have a small amount of room to move inside the soft bushing 3222. This facilitates the installation of the cable 311, adapts to the thermal expansion and contraction of the material caused by temperature changes, avoids excessive additional stress at the connection node, and can also absorb some structural vibration, making the entire connection system more flexible and more stable in operation.

[0073] In addition, a plastic washer 32211 is fixed to one end of the set screw 3221 that abuts against the cable 311. This further enhances the protection of the cable 311 surface. The plastic material has low hardness, which can more effectively disperse the tightening pressure and prevent the metal set screw 3221 from directly squeezing and damaging the cable 311. At the same time, the plastic washer 32211 also has good wear resistance and insulation properties, further improving the safety and durability of the connection.

[0074] When the above-mentioned flexible photovoltaic support is applied, firstly, the end supports 1 located at both ends of the channel 9 are installed to ensure that their concrete foundations 11 are firmly anchored to the ground; then, multiple middle supports 2 are installed sequentially along the length of the channel 9 at the designed spacing to reliably fix the central column 21 in the foundation, and a crossbeam 22 is installed at its top; after all the support structures are in place and have passed the acceptance inspection, the upper support 3 is erected, including tensioning and anchoring the load-bearing cable group 31 along the length of the channel 9, installing the connector 32, and realizing the grid integration of the load-bearing cable group 31 and the connector 32 through the triangular retainer 322, while arranging and tensioning the side stabilizing cables 4 on both sides in a "spatial broken line" manner; finally, the photovoltaic modules 8 are installed on the grid structure formed by the upper support 3 to complete the assembly of the entire system.

[0075] Among them, such as Figure 9 As shown, the force transmission path of this flexible photovoltaic support structure is as follows: the flexible photovoltaic support mainly bears its own structural weight, the self-weight of the photovoltaic modules 8, wind load, and snow load, and the cables 311 need to be pre-tensioned to form the initial stiffness of the structure. Except for the structural self-weight, all the above loads are transferred from the photovoltaic modules 8 to the load-bearing cable group 31, converted into cable force (tension), and the cable force is transmitted along the cable length to the supporting structures at both ends. Furthermore, the cable force is first transmitted to the gantry 12, and then to the concrete foundation 11 on the canal bank.

[0076] Since the construction technology of this type of flexible cable structure support is relatively mature, the specific construction details involved, such as cable tensioning, anchoring, and prestress control, are conventional technical means for those skilled in the art, and therefore will not be elaborated here.

[0077] During installation, two side stabilizing cables 4 are arranged symmetrically. Specifically, with the channel 9 as the axis of symmetry, two side stabilizing cables 4 are arranged symmetrically on both sides of the upper support 3. Each side stabilizing cable 4 extends along the length of the channel 9 and alternately connects the bottom of the end support 1, the outer edge of the upper support 3, and the bottom of the middle support 2 in sequence, forming a spatial broken line structure.

[0078] Taking one side as an example: Figure 2 As shown, the side stabilizing cable 4 is led out from the anchor point at the bottom of the end support 1 at the front end, as... Figure 3 and Figure 5 As shown, the cable is pulled upwards at an angle and connected to the lowest cable 311 located at the outer edge of the upper support 3. It then connects diagonally upwards to the highest cable 311, and then diagonally downwards again to the lowest cable 311. It then connects downwards to the central column 21 of the middle support 2. This alternating "up-up-down-down" connection pattern is repeated, extending along the length of the channel 9 to the end support 1, forming a continuous spatial zigzag structure. The side stabilizing cable 4 on the other side is installed in the same way.

[0079] In this structure, the "spatial broken line" structure formed by the lateral stabilizing cable 4 cleverly connects the upper support 3, end support 1, and middle support 2 into a tightly integrated whole in the lateral direction. This three-dimensional spatial constraint mechanism greatly enhances the lateral stiffness and overall stability of the entire support system in the direction perpendicular to the channel 9, effectively resisting asymmetrical or lateral loads such as wind loads and snow loads, preventing lateral instability or torsional deformation of the structure, compensating for the lack of lateral stiffness in large-span flexible structures, and ensuring the safe and reliable operation of the photovoltaic array.

[0080] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flexible photovoltaic support for canal terrain, characterized in that: It includes two end supports (1), multiple middle supports (2), and an upper support (3), wherein, The end supports (1) are respectively disposed at the beginning and end of the channel (9), and a plurality of the middle supports (2) are disposed at intervals along the length direction of the channel (9) in the middle region of the channel (9), and the end supports (1) and the middle supports (2) span the channel (9). The upper support (3) includes multiple load-bearing cable groups (31) extending along the length direction of the channel (9) and multiple connectors (32) extending along the width direction of the channel (9). The connectors (32) are fixedly connected to the load-bearing cable groups (31) to form a grid structure. The load-bearing cable group (31) is fixed to the top of the middle support (2), and each end of the cable group is fixedly connected to an end support (1), the top of which is used to fix the photovoltaic module (8). The end support (1) includes a concrete foundation (11) and a gantry (12), wherein the gantry (12) is fixed on the concrete foundation (11), and the load-bearing cable group (31) is fixedly connected to its top; the concrete foundation (11) is fixed to the ground; The central support (2) includes a central column (21) and a crossbeam (22), wherein the crossbeam (22) is fixed to the central column (21), and the top of the crossbeam is fixedly connected to the load-bearing cable group (31); the central column (21) is fixed to the ground.

2. The flexible photovoltaic support for channel topography as described in claim 1, characterized in that: The crossbeam (22) is a hollow plate-like structure.

3. A flexible photovoltaic support for channel topography as described in claim 1, characterized in that: It also includes two lateral stabilizing cables (4), wherein, The two side stabilizing cables (4) are symmetrically arranged on both sides of the upper support (3) with the channel (9) as the axis of symmetry; Each of the side stabilizing cables (4) extends along the length of the channel (9) and alternately connects the bottom of the end support (1), the outer edge of the upper support (3), and the bottom of the middle support (2) to form a spatial zigzag structure.

4. A flexible photovoltaic support for channel topography as described in claim 1, characterized in that: Each set of load-bearing cable groups (31) includes three cables (311), wherein, The three cables (311) are arranged sequentially from top to bottom in a triangular pattern; The three cables (311) are fixedly connected to the end support (1) and the middle support (2), and the top of the two upper cables (311) are used to fix the photovoltaic module (8). Each of the connectors (32) includes two connecting cables (321) and multiple triangular retainers (322), wherein, Each of the aforementioned triangular retainers (322) corresponds to one of the multiple load-bearing cable assemblies (31); The two connecting cables (321) are spaced apart vertically and are fixedly connected by the triangular retainer (322); The three cables (311) in each of the load-bearing cable assemblies (31) pass through the triangular retainer (322) at the corresponding positions.

5. A flexible photovoltaic support for channel topography as described in claim 4, characterized in that: The triangular retainer (322) is provided with a through hole (32201) for the cable (311) to pass through, wherein, The through hole (32201) is provided with a threaded hole (32202) on the side, and a set screw (3221) is screwed into the threaded hole (32202). One end of the top screw (3221) abuts against the outer surface of the cable (311).

6. A flexible photovoltaic support for channel terrain as described in claim 5, characterized in that: A soft bushing (3222) is provided between the cable (311) and the through hole (32201), wherein, The soft bushing (3222) is embedded in the through hole (32201), and the outer walls at both ends are fixedly connected to the hole wall of the through hole (32201); The top screw (3221) abuts against the cable (311) through the soft bushing (3222).

7. A flexible photovoltaic support for channel topography as described in claim 6, characterized in that: The outer diameter of the cable (311) is smaller than the inner diameter of the soft bushing (3222).

8. A flexible photovoltaic support for channel topography as described in claim 7, characterized in that: A plastic gasket (32211) is fixed to one end of the top screw (3221) that abuts against the cable (311).

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