Wind-resistant damping structure and photovoltaic flexible support thereof

Abstract

The utility model belongs to the technical field of flexible tracking support, specifically, relate to a wind resistance damper structure and photovoltaic flexible support, wherein the damper structure is arranged below the flexible photovoltaic support, is used for shock absorption and protection to the steel cable assembly on the flexible photovoltaic support, avoids the steel cable assembly because of the resonance causes the large -scale swing, including, damping cable, damping cable is arranged below the position of multiple rows of steel cable assembly, damping cable and steel cable assembly are perpendicular to the space arrangement, a plurality of dampers are fixedly installed on damping cable, the other end of damper is connected with steel cable assembly, and the both ends position of damping cable is opposite fixed, and damping cable has certain prestress, the utility model can avoid the steel cable because of the resonance causes the large -scale swing, avoids the component to be destroyed.

Description

Technical Field

[0001] This utility model belongs to the field of flexible tracking support technology, specifically, it relates to a wind-damping structure and its photovoltaic flexible support. Background Technology

[0002] In photovoltaic power generation systems, the supporting structures for photovoltaic panel modules include flexible photovoltaic brackets and steel frame structures. Compared with steel frame structures, flexible photovoltaic brackets have less requirement for site foundations and are more suitable for various large-span application sites such as ordinary mountains, barren slopes, and forests. During construction, they have the characteristics of less steel consumption, less load-bearing capacity, and lower cost, which can greatly shorten the construction period.

[0003] However, when flexible photovoltaic supports are subjected to external excitation, the support system will vibrate and deform. This will not only damage the structure of the photovoltaic panels and photovoltaic supports, but may also reduce the power generation efficiency of the photovoltaic system and cause fatigue failure. Therefore, based on the above problems, a variety of damping structures have emerged on the market to ensure that flexible photovoltaic supports have sufficient structural strength and stability to resist vibration problems.

[0004] Patent application number CN202411135930.8 discloses a damping cable structure for a flexible photovoltaic support and a flexible photovoltaic support. The damping cable structure includes a stabilizing cable and a damper in the middle. The upper end of the stabilizing cable is connected to the middle node of the flexible photovoltaic support, and the lower end is connected to the ground or a fixed component. The flexible photovoltaic support includes a column, multiple load-bearing cables for supporting photovoltaic panels, and a damping cable structure. The column is located at both ends of the load-bearing cable, and the transverse connection system is arranged perpendicular to the load-bearing cable. The stabilizing cable is located at the junction of the load-bearing cable and the transverse connection system in the middle position.

[0005] The aforementioned type of existing flexible photovoltaic support uses a damping cable structure to connect with the load-bearing cable on the flexible photovoltaic support, so as to reduce the vibration on the load-bearing cable and improve the support effect on the photovoltaic module.

[0006] However, the existing damping cable structures for flexible photovoltaic supports described above can only ensure the stability of the load-bearing cable and reduce vibration on the load-bearing cable. Furthermore, the photovoltaic modules installed on the load-bearing cable cannot be tilted, thus preventing the photovoltaic modules from adjusting their tilt angle with the movement of the sun, reducing their effectiveness. In addition, the damping effect of these existing damping cable structures is poor. Each row of flexible photovoltaic supports requires at least one corresponding row of stabilizing cables and damping cables, resulting in a complex structure and high construction difficulty, further reducing the effectiveness of the system. Utility Model Content

[0007] The main technical problem to be solved by this utility model is to provide a wind-resistant damping structure and its photovoltaic flexible support, which can avoid large-scale swaying of steel cables caused by resonance and prevent damage to the components.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A wind-resistant damping structure is disclosed, which is installed below a flexible photovoltaic support to absorb and protect the steel cable assemblies on the flexible photovoltaic support, preventing large-scale swaying of the steel cable assemblies due to resonance. The structure includes a damping cable, which is positioned below multiple rows of steel cable assemblies and is arranged perpendicularly to the steel cable assemblies in space. Multiple dampers are fixedly installed on the damping cable, and the other end of the dampers is connected to the steel cable assemblies. The two ends of the damping cable are relatively fixed, and the damping cable has a certain prestress.

[0009] The following are further optimizations of the above technical solution by this utility model: The two ends of the damping cable are fixedly installed on the damping column, and the lower end of the damping column is fixedly installed on the pile foundation or the ground foundation; the damping cable (1) can also be directly installed on the pile foundation or the ground foundation.

[0010] Further optimization: The upper end of the damping cable is spaced apart from the lower part of the cable assembly, and the distance between the gaps is greater than or equal to the initial length of the damper.

[0011] Further optimization: The lower end of the damper is hinged to the damping cable, and the upper end of the damper is hinged to the steel cable assembly.

[0012] Further optimization: The lower end of the damper is hinged to a first connecting plate, and an arc-shaped groove is provided at the middle of the lower surface of the first connecting plate. A positioning plate is arranged parallel below the first connecting plate, and the positioning plate and the first connecting plate are fixedly connected by bolts.

[0013] Further optimization: The upper end of the damper is hinged to a second connecting plate, and an arc-shaped groove is opened at the middle position of the upper surface of the second connecting plate. The second connecting plate is fixedly installed on the steel cable assembly by bolt pair.

[0014] Further optimization: The lower end of the damper is no longer connected to the damping cable, and a positioning column is set at the lower position of the damper. The lower end of the damper is hinged to a first connecting plate, which is fixedly installed on the positioning column by bolts. The upper end of the damper is hinged to a second connecting plate, which is fixedly connected to the steel cable assembly.

[0015] This utility model also provides a photovoltaic flexible support, including the above-mentioned wind-damping structure.

[0016] The present invention, by adopting the above-described technical solution, has at least the following beneficial effects: 1. The flexible tracking bracket in this utility model has a large span, and the component support structure is a steel cable, which is prone to swaying and resonance, thereby damaging the photovoltaic module; adding a windproof structure and a damping structure can prevent the steel cable from swaying significantly due to resonance and prevent the module from being damaged.

[0017] 2. The damping structure in this utility model is a damper, which can both follow the rotation, elongation and compression of the tracking bracket, and can also play a damping role when there is a large sway. Moreover, the structure is simple and easy to install.

[0018] 3. The damping structure in this utility model has an independent foundation, which can reduce the impact of wind vibration on the column and make the structure more stable.

[0019] 4. In this utility model, the multi-row tracking bracket is connected to the damping cable foundation through a damper. The damping cable is arranged perpendicular to the extension direction of the load-bearing cable. Compared with the damping cable arranged in the parallel extension direction, it is shorter and less expensive. Moreover, the magnitude and direction of the force transmitted to the damping cable by the multi-row tracking system are different, which can cancel each other out and improve the stability of the structure.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model; Figure 2 This is a partial enlarged view of the damper location in Embodiment 1 of this utility model; Figure 3 This is a partial enlarged view of the location of the second connecting plate in Embodiment 1 of this utility model; Figure 4 This is a partial enlarged view of the position of the first connecting plate in Embodiment 1 of this utility model; Figure 5 This is a partial enlarged view of the positioning plate location in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model; Figure 7 This is a partial enlarged view of the damper location in Embodiment 2 of this utility model.

[0022] In the diagram: 1-Damping cable; 2-Damper; 201-First connecting plate; 202-Positioning plate; 203-Second connecting plate; 3-Damping column; 4-Bearing cable; 5-Stabilizing cable; 6-Windproof structure; 7-Side column; 8-Side inclined beam; 9-Central column; 10-Central inclined beam; 11-Stay cable; 12-Positioning column; 13-Drive assembly. Detailed Implementation

[0023] Example 1: As Figure 1-5As shown: A wind-resistant damping structure is installed below a flexible photovoltaic support to absorb vibrations and protect the steel cable components on the flexible photovoltaic support, preventing large-scale swaying of the steel cable components due to resonance. The structure includes a damping cable 1, which is located below multiple rows of steel cable components. The damping cable 1 is arranged perpendicularly to the steel cable components in space. Multiple dampers 2 are fixedly installed on the damping cable 1, and the other end of the dampers 2 is connected to the steel cable components. The two ends of the damping cable 1 are relatively fixed, and the damping cable 1 has a certain prestress.

[0024] In this embodiment, the damping cable 1 can absorb vibration and protect multiple rows of flexible photovoltaic supports. The multiple rows of flexible photovoltaic supports are arranged in parallel, and the damping cable 1 is arranged along the arrangement direction of the multiple rows of flexible photovoltaic supports. The damping cable 1 and each steel cable assembly are arranged in a spatially perpendicular manner.

[0025] In this embodiment, as Figure 1 As shown, the damping cable 1 can absorb vibration and protect the three rows of flexible photovoltaic supports. The three rows of flexible photovoltaic supports are arranged in parallel and at equal intervals. The damping cable 1 is transversely inserted through the middle of the three rows of flexible photovoltaic supports. Each damping cable 1 is fixedly installed with three dampers 2, and the upper end of the three dampers 2 is fixedly connected to the corresponding steel cable assembly.

[0026] The two ends of the damping cable 1 are fixedly installed on the damping column 3, and the lower end of the damping column 3 is fixedly installed on the pile foundation or the ground foundation.

[0027] In this embodiment, the two ends of the damping cable 1 are respectively inserted into the ear plate through holes at the upper end of the damping column 3, and then the free end of the damping cable 1 is fastened by a wire rope clamp to achieve a fixed connection between the damping cable 1 and the damping column 3.

[0028] The two ends of the damping cable 1 are fixedly installed on the corresponding damping columns 3, and then the damping cable 1 is tensioned using professional equipment so that the damping cable 1 has a certain prestress.

[0029] This design allows the damping cable 1 to be fixedly installed below the steel cable assembly by setting the damping column 3, which facilitates the installation of the damping cable 1. It also allows the upper end of the damping cable 1 to be installed at an interval from the lower end of the steel cable assembly, and the interval distance is greater than or equal to the initial length of the damper 2.

[0030] In addition to this embodiment, the damping cable 1 can also be directly installed on the pile foundation or ground foundation.

[0031] The lower end of the damper 2 is hinged to the damping cable 1, and the upper end of the damper 2 is hinged to the steel cable assembly.

[0032] When the cable assembly rotates at a set speed to adjust the tilt angle of its bearing base, the damper 2 performs adaptive rotation and extension adjustment; when an instantaneous force occurs on the cable assembly, the damper 2 buffers and protects it based on the damping effect; thus preventing the cable assembly from swaying significantly due to resonance.

[0033] The lower end of the damper 2 is hinged to a first connecting plate 201. An arc-shaped groove is provided at the middle of the lower surface of the first connecting plate 201. The inner surface shape of the arc-shaped groove matches the outer surface shape of the damping cable 1.

[0034] A positioning plate 202 is arranged parallel to the bottom of the first connecting plate 201, and the positioning plate 202 is fixedly connected to the first connecting plate 201 by bolts.

[0035] With this design, during assembly, the first connecting plate 201 is first hinged to the lower end of the damper 2, and then the first connecting plate 201 is placed above the damping cable 1. At this time, the damping cable 1 is adapted to the arc groove on the first connecting plate 201. Then, the positioning plate 202 is placed below the damping cable 1, and the first connecting plate 201 and the positioning plate 202 are fixedly connected by bolts. At this time, the first connecting plate 201 and the positioning plate 202 can be fixedly installed on the damping cable 1, thereby realizing the hinged installation of the lower end of the damper 2 on the damping cable 1, which facilitates assembly and installation.

[0036] The upper end of the damper 2 is hinged to a second connecting plate 203. An arc-shaped groove is provided at the middle position of the upper surface of the second connecting plate 203. The second connecting plate 203 is fixedly installed on the steel cable assembly by bolt pairs.

[0037] With this design, during assembly, the second connecting plate 203 is first hinged to the upper end of the damper 2, and then the second connecting plate 203 is fixed to the steel cable assembly with bolts, thereby enabling the upper end of the damper 2 to be hinged to the steel cable assembly, which facilitates assembly and installation.

[0038] In this embodiment, the steel cable assembly consists of three parallel and spaced steel cables. Its specific structure includes two parallel and spaced load-bearing cables 4. A bearing base for installing photovoltaic modules is formed above the two load-bearing cables 4. A stabilizing cable 5 is provided below the two load-bearing cables 4. The stabilizing cable 5 and the two load-bearing cables 4 are distributed in a triangle. Multiple parallel and spaced windproof structures 6 are provided between the two load-bearing cables 4 and the stabilizing cable 5.

[0039] In this embodiment, the damper 2 is located below the windproof structure 6, and the second connecting plate 203 hinged to the upper end of the damper 2 is fixedly connected to the connecting piece at the bottom of the windproof structure 6 by bolts, so that the damper 2 is directly installed below the windproof structure 6.

[0040] The windproof structure 6 is a triangular frame consisting of three rods connected end to end. The three corners of the triangular frame are fixedly connected to the corresponding load-bearing cable 4 and stabilizing cable 5, respectively.

[0041] The three corner points of the triangular frame are all hinged with connectors, and the three connectors are fixedly connected to the corresponding load-bearing cable 4 and stabilizing cable 5 respectively.

[0042] The windproof structure 6 enables the load-bearing cable 4 and the stabilizing cable 5 to remain parallel to each other in space. At the same time, multiple windproof structures 6 are arranged at intervals along the length of the load-bearing cable 4, forming a triangular spatial truss with uniform tension in the middle of the load-bearing cable 4 and the stabilizing cable 5. This completely eliminates the drooping phenomenon in the middle section of the load-bearing cable 4. As a result, the structure can evenly distribute the load under wind load, avoid the buckling deformation caused by local tension overload, and significantly improve the ability to resist upwind winds.

[0043] In this embodiment, the overall structure of the flexible photovoltaic support is as follows: Figure 1 As shown, it includes two side columns 7, which are respectively located at both ends of the extension direction of the load-bearing cable 4. The upper ends of the two side columns 7 are respectively rotatably installed with side inclined beams 8, and the two ends of the load-bearing cable 4 are respectively fixedly connected to the side inclined beams 8.

[0044] At least one central column 9 is provided between the two side columns 7. The central column 9 and the side columns 7 are arranged parallel to each other on the same straight line and spaced apart. A central inclined beam 10 is rotatably installed on the upper end of the central column 9. The load-bearing cable 4 passes through the two ends of the central inclined beam 10. The two ends of the stabilizing cable 5 are fixedly connected to the corresponding side inclined beam 8 and central inclined beam 10, respectively.

[0045] In this embodiment, the side columns 7 and the central column 9 can be foundation structures such as concrete pile foundations or steel structure columns.

[0046] On the opposite sides of the two side columns 7, multiple inclined stay cables 11 are respectively provided. One end of the stay cable 11 is fixedly connected to the upper end of the corresponding side column 7, and the other end of the stay cable 11 is fixedly installed on the foundation or pile foundation.

[0047] In addition to this embodiment, the steel cable assembly can also consist of four parallel and spaced steel cables. The four steel cables are divided into two parallel load-bearing cables 4 and two stabilizing cables 5 located below the load-bearing cables 4. The load-bearing cables 4 and the stabilizing cables 5 are kept parallel to each other in space. In this case, the windproof structure 6 adopts a rigid frame composed of multiple rods, and the rigid frame has corner points corresponding to the number of steel cables. Each corner point is fixedly connected to the corresponding steel cable.

[0048] In addition to this embodiment, the damping column 3 can also be cast into a pile foundation structure by means of casting.

[0049] In this embodiment, drive components 13 are provided between the side column 7 and the side inclined beam 8, and between the middle column 9 and the middle inclined beam 10, to drive the corresponding side inclined beam 8 and the middle inclined beam 10 to rotate and adjust the tilt angle of the bearing base.

[0050] The drive assembly 13 is an electric push rod, which is arranged at an angle, and its two ends are respectively hinged to the side column 7 and the side inclined beam 8, or to the central column 9 and the central inclined beam 10.

[0051] In addition to this embodiment, the drive assembly 13 may also be one of a hydraulic cylinder, a gear motor, a linear motor, a wire rope winch, or a pneumatic cylinder.

[0052] With this design, the drive assembly 13 drives the side inclined beam 8 and the middle inclined beam 10 to rotate. At this time, the side inclined beam 8 and the middle inclined beam 10 synchronously drive the load-bearing cable 4 and the stabilizing cable 5 to rotate, thereby adjusting the tilt angle of the bearing base.

[0053] Example 2: Figure 6-7 As shown, based on the above embodiment 1, in this embodiment 2, the lower end of the damper 2 is no longer connected to the damping cable 1, that is, the structure of the damping cable 1 is eliminated. A positioning column 12 is provided at the lower position of the damper 2. The lower end of the damper 2 is hinged to a first connecting plate 201, which is fixedly installed on the positioning column 12 by bolts. The upper end of the damper 2 is hinged to a second connecting plate 203, which is fixedly connected to the steel cable assembly.

[0054] The lower end of the positioning column 12 is fixedly installed on the pile foundation or ground foundation on the bottom surface.

[0055] In addition to this embodiment, the positioning column 12 can also be cast into a pile foundation structure by means of casting.

[0056] In this embodiment, the damping cable 1 is made of steel strand or steel wire rope, or it can be a rigid tie rod; the damper 2 can be a spring or other retractable component.

[0057] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A wind-resistant damping structure, wherein the damping structure is disposed below a flexible photovoltaic support for absorbing and protecting the steel cable assembly on the flexible photovoltaic support, thereby preventing large-amplitude swaying of the steel cable assembly due to resonance, characterized in that: It includes a damping cable (1), which is located below the multi-row steel cable assembly. The damping cable (1) is arranged vertically in space with the steel cable assembly. Multiple dampers (2) are fixedly installed on the damping cable (1). The other end of the damper (2) is connected to the steel cable assembly. The two ends of the damping cable (1) are relatively fixed, and the damping cable (1) has a certain prestress.

2. The wind-damping structure according to claim 1, characterized in that: The two ends of the damping cable (1) are fixedly installed on the damping column (3), and the lower end of the damping column (3) is fixedly installed on the pile foundation or the ground foundation.

3. The wind-damping structure according to claim 2, characterized in that: The upper end of the damping cable (1) is spaced apart from the lower part of the cable assembly, and the distance between the gaps is greater than or equal to the initial length of the damper (2).

4. The wind-damping structure according to claim 3, characterized in that: The lower end of the damper (2) is hinged to the damping cable (1), and the upper end of the damper (2) is hinged to the steel cable assembly.

5. The wind-damping structure according to claim 4, characterized in that: The lower end of the damper (2) is hinged to a first connecting plate (201). An arc-shaped groove is provided at the middle of the lower surface of the first connecting plate (201). A positioning plate (202) is arranged parallel below the first connecting plate (201). The positioning plate (202) and the first connecting plate (201) are fixedly connected by bolts.

6. The wind-damping structure according to claim 5, characterized in that: The upper end of the damper (2) is hinged to a second connecting plate (203). An arc groove is provided at the middle position of the upper surface of the second connecting plate (203). The second connecting plate (203) is fixedly installed on the steel cable assembly by bolt pair.

7. A flexible photovoltaic support structure, characterized in that: Includes a wind-damping structure as described in any one of claims 1-6.

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