Center pillar structure of flexible photovoltaic support and flexible photovoltaic support

Abstract

The utility model relates to the technical field of photovoltaic power generation, in particular to a center pillar structure of a flexible photovoltaic support and the flexible photovoltaic support. The center pillar structure comprises a pillar foundation, the pillar foundation comprises at least two center pillars arranged at intervals in the transverse direction, each center pillar comprises a bottom pile foundation and an upper pillar, the lower end of each upper pillar is hinged to the upper end of the corresponding bottom pile foundation, the hinge axis of each upper pillar and the corresponding bottom pile foundation extends in the transverse direction, and the lower end of each bottom pile foundation is used for being fixed to the ground; top balance beams extending in the transverse direction are arranged at the upper ends of the upper supporting columns, installation positions used for installing longitudinal horizontal inhaul cables are arranged on the top balance beams, and horizontal connecting rods are connected between the two opposite ends of every two adjacent top balance beams. The two adjacent rows of supporting systems can be connected through horizontal connection, the lower ends of the upper supporting columns are hinged to the upper ends of the bottom pile foundations, bending moment generated by the longitudinal horizontal inhaul cables can be released, the fracture damage risk of the middle stand columns is reduced, and the overall lateral force resisting capacity of the flexible photovoltaic support system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, and in particular to a neutral column structure of a flexible photovoltaic bracket and a flexible photovoltaic bracket. Background Art

[0002] Photovoltaic power generation, as a mature renewable clean energy, has been widely favored by the market due to its good environmental protection and economic performance. With the rapid development of my country's photovoltaic industry, high-quality project construction land is rapidly exhausted. Therefore, the full development and utilization of non-high-quality space resources (such as tidal flats, abandoned mountains, etc.) will have broad market prospects. In order to meet the development needs, a flexible photovoltaic support structure based on a prestressed cable system has emerged in recent years.

[0003] The structure of a flexible photovoltaic bracket usually includes two supporting columns spaced apart in the longitudinal direction. A crossbeam extending in the transverse direction is arranged at the upper end of each supporting column. A longitudinal prestressed cable (i.e., longitudinal horizontal cable) is arranged between the two longitudinally opposite crossbeams. The two horizontal cables are used to install photovoltaic panels. Diagonal cables are usually arranged on the opposite sides of the two supporting columns to improve stability. In this way, prestress can be applied through the cables to achieve a large-span arrangement of photovoltaic modules.

[0004] In a flexible photovoltaic support, since the prestressed horizontal cables are arranged in multiple spans longitudinally, a center column is usually set between two supporting columns to improve stability. For example, in the prior art, the Chinese utility model patent with the authorization announcement number CN219124128U discloses a "flexible photovoltaic support with hinged columns", which includes at least three supporting columns, and the cross beams at the top of adjacent supporting columns are connected by a main cable. The supporting columns at both ends are steel side columns (i.e., supporting columns), and the middle supporting column is a precast concrete center column (i.e., center column). The cross beam at the top of the steel side column is connected to the main cable through an anchor, and the cross beam at the top of the precast concrete center column is hingedly connected to the main cable, and the precast concrete center column is a pile-column integrated structure.

[0005] The bottom of the neutral column in the prior art is usually fixed directly on the ground. In actual use, under the action of lateral wind vibration, a certain lateral force is easily formed, resulting in bending moment. Especially when the flexible photovoltaic bracket has a large number of longitudinal spans, it is easy to cause the neutral column to break, resulting in lateral instability of the structural system. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a center column structure of a flexible photovoltaic bracket and a flexible photovoltaic bracket. By hingedly connecting the lower end of the upper support column with the upper end of the bottom pile foundation, the hinge can be used to release the bending moment generated by the longitudinal lateral force of the longitudinal horizontal cable, thereby reducing the stress on the center column and reducing the risk of center column fracture damage. Horizontal connecting rods can be used to connect the opposite ends of adjacent top balance beams, and then the two adjacent rows of support systems can be laterally connected, thereby improving the lateral stiffness, improving the overall lateral force resistance of the flexible photovoltaic bracket system, and avoiding lateral instability of the structural system.

[0007] In response to the above technical problems, the technical solution provided by the utility model is a center column structure of a flexible photovoltaic bracket, including a column foundation, the column foundation includes at least two center columns arranged at intervals along the lateral direction, the center column includes a bottom pile foundation and an upper pillar, the lower end of the upper pillar is hingedly connected to the upper end of the bottom pile foundation, and the hinge axis of the two extends laterally, the lower end of the bottom pile foundation is used to be fixed on the ground, the upper end of the upper pillar is provided with a top balance beam extending laterally, the top balance beam is provided with an installation position for installing a longitudinal horizontal cable, and a horizontal connecting rod is connected between the two opposite ends of the adjacent top balance beams.

[0008] Furthermore, it also includes two groups of inclined cable mechanisms, which are symmetrically arranged on both lateral sides of the column foundation. The inclined cable mechanism includes a pile foundation and inclined cables connected between the pile foundation and the corresponding side top balance beam.

[0009] Furthermore, a connecting ear is provided on the top balance beam on the corresponding side of the inclined cable at one end facing the inclined cable, and a rocker arm is hingedly connected to the connecting ear. A U-shaped hanging ring is provided on the upper end of the inclined cable, and the upper end of the U-shaped hanging ring is hingedly connected to the rocker arm, and the lower end of the U-shaped hanging ring is connected to the inclined cable through a wedge-shaped fixed wire clamp.

[0010] Furthermore, the height of the upper end of the pile foundation is not higher than the height of the upper end of the bottom pile foundation.

[0011] Furthermore, a connecting ear is provided at one end of the top balance beam facing the horizontal connecting rod, and one end of the horizontal connecting rod facing the top balance beam is hingedly connected to the connecting ear.

[0012] Furthermore, the mounting position includes a flat through-ring arranged at the upper end of the top balance beam, the flat through-ring is provided with a through-hole extending in the longitudinal direction, the vertical height of the through-hole is used to adapt to the outer diameter of the longitudinal horizontal cable, and the transverse width of the through-hole is used to be larger than the outer diameter of the longitudinal horizontal cable.

[0013] Furthermore, two flat through rings are symmetrically arranged on both sides of the top balance beam.

[0014] Furthermore, a balance beam diagonal brace is provided between the top balance beam and the upper support column, and two balance beam diagonal braces are symmetrically provided in the transverse direction.

[0015] In response to the above technical problems, the utility model also provides a flexible photovoltaic bracket, comprising two supporting columns arranged at intervals along the longitudinal direction and a longitudinal horizontal cable passing through the two supporting columns, a center column structure is arranged between the two supporting columns, the upper end of the center column structure is connected to the longitudinal horizontal cable, the center column structure includes a column foundation, the column foundation includes at least two center columns arranged at intervals along the transverse direction, the center column includes a bottom pile foundation and an upper pillar, the lower end of the upper pillar is hingedly connected to the upper end of the bottom pile foundation, and the hinge axis of the two extends transversely, the lower end of the bottom pile foundation is used to be fixed to the ground, the upper end of the upper pillar is provided with a top balance beam extending transversely, the top balance beam is provided with a mounting position for installing the longitudinal horizontal cable, and a horizontal connecting rod is connected between the two opposite ends of the adjacent top balance beams.

[0016] Furthermore, it also includes two groups of inclined cable mechanisms, which are symmetrically arranged on both lateral sides of the column foundation. The inclined cable mechanism includes a pile foundation and inclined cables connected between the pile foundation and the corresponding side top balance beam.

[0017] Furthermore, a connecting ear is provided on the top balance beam on the corresponding side of the inclined cable at one end facing the inclined cable, and a rocker arm is hingedly connected to the connecting ear. A U-shaped hanging ring is provided on the upper end of the inclined cable, and the upper end of the U-shaped hanging ring is hingedly connected to the rocker arm, and the lower end of the U-shaped hanging ring is connected to the inclined cable through a wedge-shaped fixed wire clamp.

[0018] Furthermore, the height of the upper end of the pile foundation is not higher than the height of the upper end of the bottom pile foundation.

[0019] Furthermore, a connecting ear is provided at one end of the top balance beam facing the horizontal connecting rod, and one end of the horizontal connecting rod facing the top balance beam is hingedly connected to the connecting ear.

[0020] Furthermore, the mounting position includes a flat through-ring arranged at the upper end of the top balance beam, the flat through-ring is provided with a through-hole extending in the longitudinal direction, the vertical height of the through-hole is used to adapt to the outer diameter of the longitudinal horizontal cable, and the transverse width of the through-hole is used to be larger than the outer diameter of the longitudinal horizontal cable.

[0021] Furthermore, two flat through rings are symmetrically arranged on both sides of the top balance beam.

[0022] Furthermore, a balance beam diagonal brace is provided between the top balance beam and the upper support column, and two balance beam diagonal braces are symmetrically provided in the transverse direction.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) The lower end of the upper support is hingedly connected to the upper end of the bottom pile foundation, and the hinge axis of the two extends horizontally. The center column is a semi-rigid structure as a whole. In this way, when the longitudinal horizontal cable extending along the longitudinal direction is located on the installation position of the upper support, the hinge can be used to release the bending moment generated by the longitudinal lateral force of the longitudinal horizontal cable, thereby reducing the stress on the center column and reducing the risk of fracture and damage to the center column, which is beneficial to reducing the cross-section of the column and saving materials; the horizontal connecting rod can be used to connect the opposite ends of the adjacent top balance beams, and then the adjacent two rows of support systems are connected horizontally, thereby improving the lateral stiffness and the overall lateral force resistance of the flexible photovoltaic support system, and avoiding lateral instability of the structural system.

[0025] (2) A set of inclined cable mechanisms are arranged on both sides of the column foundation. The column foundation can be laterally anchored in the form of symmetrical inclined cables on both sides, thereby improving the overall anti-lateral overturning ability of the central column structure and improving the stability and constructability of the overall structure.

[0026] (3) A connecting ear is provided at one end of the top balance beam facing the horizontal connecting rod, and one end of the horizontal connecting rod facing the top balance beam is hingedly connected to the connecting ear. In this way, the horizontal connecting rod is used to realize a semi-rigid connection between adjacent top balance beams. In actual use, the two top balance beams can be relatively displaced, thereby avoiding rigid stress and improving structural stability.

[0027] (4) The installation position includes a flat through-ring. The flat through-ring can be used to enable the longitudinal horizontal cables of multiple spans to move in the flat through-ring when they are not in a straight line in the longitudinal direction or when there is a serpentine deviation, thereby releasing and adapting the lateral force of the longitudinal horizontal cables and reducing the adverse effects of installation deviation or prestressed lateral force on the lateral stability of the center column structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the center column structure in Example 1 of the utility model.

[0029] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0030] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle.

[0031] Figure 4 yes Figure 1 A partial enlarged view of point C in the middle.

[0032] In the figure: 1, pile foundation; 2, adjustable cable clamp; 3, inclined cable; 4, wedge-shaped fixed clamp; 5, U-shaped hanging ring; 6, flat through ring; 7, top balance beam; 8, upper support; 9, horizontal connecting rod; 10, balance beam diagonal brace; 11, bottom pile foundation; 12, longitudinal horizontal cable; 13, connecting ear; 14, swing rod; 15, center column; 16, column foundation; S, ground. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application: Specific embodiment 1:

[0035] refer to Figures 1 to 4 A flexible photovoltaic bracket includes two supporting columns (not shown in the figure) arranged at intervals along the longitudinal direction and a longitudinal horizontal cable 12 passing through the two supporting columns, a middle column structure is arranged between the two supporting columns, and the upper end of the middle column structure is connected to the longitudinal horizontal cable 12, so that the upper end of the longitudinal horizontal cable 12 arranged in multiple spans along the longitudinal direction can be seated on the middle column structure, and the middle column structure is used to provide support for the longitudinal horizontal cable 12 to meet the multi-span arrangement requirements of the longitudinal horizontal cable 12.

[0036] like Figure 1 As shown, the center column structure includes a column foundation 16, and the column foundation 16 includes at least two center columns 15 arranged at intervals along the lateral direction. In this embodiment, the column foundation 16 includes two center columns 15 arranged at intervals along the lateral direction. Of course, in other embodiments, the number of center columns 15 in the column foundation 16 can be set according to actual needs, such as 3 or 4 center columns 15 are set at intervals.

[0037] In this embodiment, the center column 15 includes a bottom pile foundation 11 and an upper support column 8. The lower end of the bottom pile foundation 11 extends into and is fixed on the ground S. The lower end of the upper support column 8 is hingedly connected to the upper end of the bottom pile foundation 11, and the hinge axis of the two extends laterally. A top balance beam 7 extending laterally is fixedly arranged at the upper end of the upper support column 8. The top balance beam 7 is provided with a mounting position for installing a longitudinal horizontal cable 12. A horizontal connecting rod 9 is connected between the two opposite ends of adjacent top balance beams 7.

[0038] Specifically, Figure 3As shown, the opposite ends of the adjacent top balance beams 7 are provided with connecting ears 13, that is, the connecting ear 13 is provided at one end of the top balance beam 7 facing the horizontal connecting rod 9, and the one end of the horizontal connecting rod 9 facing the top balance beam 7 is hingedly connected to the connecting ear 13. In this way, the two ends of the horizontal connecting rod 9 are respectively hingedly connected to the two opposite ends of the adjacent top balance beams 7, and the semi-rigid connection between the adjacent top balance beams 7 is realized by using the horizontal connecting rod 9. In actual use, the two top balance beams 7 can be relatively displaced to avoid rigid stress and improve structural stability. Of course, in other embodiments, when meeting actual needs, the horizontal connecting rod 9 can be fixedly connected to the top balance beam 7 on the corresponding side.

[0039] In this embodiment, if Figure 1 As shown, in the transverse direction, the upper support 8 is arranged at the midpoint of the top balance beam 7. Preferably, a balance beam diagonal brace 10 is arranged between the top balance beam 7 and the upper support 8, and two balance beam diagonal braces 10 are symmetrically arranged in the transverse direction, so that a triangular structure can be formed between the upper support 8, the top balance beam 7 and the balance beam diagonal brace 10 to improve the stability of the top balance beam 7.

[0040] In this embodiment, if Figure 1 , 2 As shown, preferably, the installation position on the top balance beam 7 for installing the longitudinal horizontal cable 12 includes a flat through ring 6, and two flat through rings 6 are symmetrically arranged in the transverse direction relative to the upper support 8. In this way, two longitudinal horizontal cables 12 can be symmetrically arranged on the top support beam, so that the top balance beam 7 is balanced in the transverse direction, and the center of gravity is at the position of the upper support 8, thereby improving stability.

[0041] Specifically, Figure 2 As shown, the flat through-ring 6 is provided with a through-hole extending in the longitudinal direction, the vertical height of the through-hole is used to match the outer diameter of the longitudinal horizontal cable 12, and the transverse width of the through-hole is used to be larger than the outer diameter of the longitudinal horizontal cable 12. In this way, the through-hole can be used to limit the longitudinal horizontal cable 12 in the longitudinal direction, and at the same time, it can be ensured that the longitudinal horizontal cable 12 can slide transversely in the through-hole. Then, when the longitudinal horizontal cables 12 arranged in multiple spans are not in a straight line in the longitudinal direction or there is a serpentine deviation, the longitudinal horizontal cables 12 can release the lateral force of the longitudinal horizontal cables 12 in the transverse direction by moving their positions in the through-holes, adapting to installation requirements and reducing the adverse effects of installation deviations or prestressed lateral forces on the lateral stability of the center column structure.

[0042] Of course, in other embodiments, when the actual installation requirements are met, the installation position can be designed as a fixed seat, and the longitudinal horizontal cable 12 is fixedly installed on the fixed seat. In other embodiments, the number of flat through-rings 6 on the top balance beam 7 can be set according to actual requirements, such as only one on the top balance beam 7, or three or four on the top balance beam 7 at intervals.

[0043] In this embodiment, preferably, Figure 1 As shown, the central column structure also includes a cable-stayed mechanism, and a group of the cable-stayed mechanisms are respectively provided on both sides of the column foundation 16 in the horizontal direction, and the two groups of the cable-stayed mechanisms are arranged symmetrically. The cable-stayed mechanism includes a pile foundation and a cable-stayed mechanism 3, and the lower end of the pile foundation 1 extends into and is fixed on the ground S, and the cable-stayed mechanism 3 is connected between the top balance beam 7 and the pile foundation 1 on the corresponding side of the column foundation 16. In this way, the cable-stayed mechanism 3 is used to provide flexible tension for the column foundation 16 on both sides in the horizontal direction, and the column foundation 16 is anchored in the horizontal direction in the form of the cable-stayed mechanisms 3 symmetrical on both sides, thereby improving the overall anti-lateral overturning ability of the central column structure, and improving the stability and constructability of the overall structure.

[0044] Preferably, in this embodiment, Figure 2 As shown, a connecting ear 13 is provided at one end of the top balance beam 7 on the corresponding side of the inclined cable 3 facing the inclined cable 3, and a swing rod 14 is hingedly connected to the connecting ear 13, and the hinge axis of the swing rod 14 extends in the longitudinal direction, so that the swing rod 14 can swing in the transverse section. A wedge-shaped fixed wire clamp 4 is provided at the upper end of the inclined cable 3, and the upper end of the inclined cable 3 is fixed on the wedge-shaped fixed wire clamp 4, and a U-shaped hanging ring 5 is fixedly connected to the upper end of the wedge-shaped fixed wire clamp 4, and the upper end of the U-shaped hanging ring 5 is opened and hingedly connected to the swing rod 14 through a hinge shaft, and the hinge axis is perpendicular to the hinge axis of the swing rod 14 and the connecting ear 13. In this way, the swing rod 14 and the U-shaped hanging ring 5 can be used to increase the rotation range of the upper end of the inclined cable 3, and improve the practicality of the inclined cable 3. Of course, in other embodiments, the upper end of the inclined cable 3 can be directly fixedly connected to the top balance beam 7 on the corresponding side.

[0045] In this embodiment, if Figure 4 As shown, the lower end of the inclined cable 3 is connected to the pile foundation 1, and an adjustable cable clamp 2 is provided at the end, so that the length of the inclined cable 3 can be adjusted by using the adjustable cable clamp 2 to improve practicality.

[0046] Preferably, in this embodiment, the height of the upper end of the pile foundation 1 is not higher than the height of the upper end of the bottom pile foundation 11. This ensures that the inclined cable 3 can pass through the entire upper support 8, thereby improving the pulling effect on the upper support 8 and improving stability.

[0047] In summary, the flexible photovoltaic bracket of the utility model can make the center column 15 as a whole have a semi-rigid structure by hingedly connecting the lower end of the upper support 8 with the upper end of the bottom pile foundation 11, and the hinge axis of the two extends laterally. When the longitudinal horizontal cable 12 extending in the longitudinal direction is seated on the installation position of the upper support 8, the hinge can be used to release the bending moment generated by the longitudinal lateral force from the longitudinal horizontal cable 12, thereby reducing the stress on the center column 15 and reducing the risk of fracture and damage of the center column 15, which is beneficial to reducing the cross-section of the column and saving materials; the horizontal connecting rod 9 can be used to connect the opposite ends of the adjacent top balance beams 7, and then the two adjacent rows of support systems are connected laterally, thereby improving the lateral stiffness, improving the overall lateral force resistance of the flexible photovoltaic bracket system, and avoiding lateral instability of the structural system.

[0048] An embodiment of a center column structure of a flexible photovoltaic bracket of the utility model, the center column structure of the flexible photovoltaic bracket of the utility model is the same as the structure of the center column structure of the flexible photovoltaic bracket in the above embodiment, and will not be described in detail here.

[0049] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0050] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0051] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

Claims

1. A neutral column structure of a flexible photovoltaic support, characterized in that: It includes a column foundation, which includes at least two center columns arranged at intervals along the transverse direction. The center column includes a bottom pile foundation and an upper support column. The lower end of the upper support column is hingedly connected to the upper end of the bottom pile foundation, and the hinge axis of the two extends along the transverse direction. The lower end of the bottom pile foundation is used to be fixed on the ground. The upper end of the upper support column is provided with a top balance beam extending along the transverse direction. The top balance beam is provided with a mounting position for installing a longitudinal horizontal cable, and a horizontal connecting rod is connected between two opposite ends of adjacent top balance beams.

2. The center column structure of the flexible photovoltaic support according to claim 1 is characterized in that: It also includes two groups of inclined cable mechanisms, which are symmetrically arranged on both lateral sides of the column foundation. The inclined cable mechanism includes a pile foundation and inclined cables connected between the pile foundation and the corresponding side top balance beam.

3. The center column structure of the flexible photovoltaic support according to claim 2 is characterized in that: A connecting ear is provided at one end of the top balance beam on the corresponding side of the inclined cable facing the inclined cable, and a swing rod is hingedly connected to the connecting ear. A U-shaped hanging ring is provided at the upper end of the inclined cable, and the upper end of the U-shaped hanging ring is hingedly connected to the swing rod, and the lower end of the U-shaped hanging ring is connected to the inclined cable through a wedge-shaped fixed wire clamp.

4. The center column structure of the flexible photovoltaic support according to claim 2, characterized in that: The height of the upper end of the pile foundation is not higher than the height of the upper end of the bottom pile foundation.

5. The center column structure of the flexible photovoltaic support according to claim 1, characterized in that: One end of the top balance beam facing the horizontal connecting rod is provided with a connecting ear, and one end of the horizontal connecting rod facing the top balance beam is hingedly connected to the connecting ear.

6. The center column structure of the flexible photovoltaic support according to claim 1, characterized in that: The mounting position includes a flat through-ring arranged at the upper end of the top balance beam, the flat through-ring is provided with a through-hole extending in the longitudinal direction, the vertical height of the through-hole is used to adapt to the outer diameter of the longitudinal horizontal cable, and the transverse width of the through-hole is used to be larger than the outer diameter of the longitudinal horizontal cable.

7. The center column structure of the flexible photovoltaic support according to claim 6, characterized in that: The flat through rings are symmetrically arranged on two lateral sides of the top balance beam.

8. The center column structure of the flexible photovoltaic support according to claim 1, characterized in that: A balance beam diagonal brace is arranged between the top balance beam and the upper support column, and two balance beam diagonal braces are symmetrically arranged in the transverse direction.

9. A flexible photovoltaic support, comprising two support columns arranged in a longitudinal interval and a longitudinal horizontal cable passing through the two support columns, a middle column structure is arranged between the two support columns, and the upper end of the middle column structure is connected to the longitudinal horizontal cable, characterized in that: The central column structure is the central column structure of the flexible photovoltaic bracket described in any one of claims 1 to 8.

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