Middle stand column system capable of adapting to photovoltaic flexible support in mountain land with super-large slope

Abstract

The utility model discloses a middle stand column system of a photovoltaic flexible support capable of adapting to a super-large slope mountain land, which comprises a support formed by a vertically arranged middle stand column and a horizontally arranged middle top beam, and the side face of the support is movably connected with an inner support. The flexible support has the advantages that the structure is more stable and reliable, stress is clear and reasonable, and the problem that a traditional flexible support is prone to large-scale collapse is effectively eradicated; the lateral stiffness is higher, the problem of prestress relaxation of the steel strand can be solved, and the deflection of the cable can be reduced; the matched foundation can be smaller in pile diameter and pile depth, so that the system construction cost is effectively saved; the root node is more stable and reliable under the complex crosswind working condition; the installation efficiency is high, the error-tolerant rate is high, and the adaptability is high under different slopes.

Description

Technical Field

[0001] The utility model relates to a neutral column system of a mountain photovoltaic flexible support, belonging to the technical field of photovoltaic supports. Background Art

[0002] With the rapid development of photovoltaic construction, construction land is becoming increasingly scarce, and the existing land conditions are getting worse and worse, mainly manifested in the worsening geological conditions and more complex terrain conditions. For mountain flexible support projects, the main challenges are the increasing slope terrain and drastic changes in terrain.

[0003] In view of the large slope conditions in mountainous areas, some traditional manufacturers have proposed the solution of using a swinging center column to adapt to the slope changes. This solution only requires the center column to be located at the bisector of the angles of the two adjacent span cables during installation to obtain the most ideal stress state. A smaller center column section and a smaller pile can be used to achieve the purpose of cost reduction. However, there are many problems in the implementation of the swing column solution. First, the installation is difficult. Because the swing column is a mobile structure, the on-site construction and installation are relatively rough, and it is difficult to achieve an accurate installation angle, which brings great safety hazards to the bracket. Second, the wind load borne by the bracket is a dynamic load with strong randomness. If the swing column is used in the slope-following solution, the center column head is prone to cumulative deformation along the cable direction. When the deformation is too large, the swing column will become unstable and cause the component to collapse. In severe cases, it will cause multiple spans to collapse continuously. At present, there have been many collapse accidents of the swing column solution. Third, the root of the swing column is connected by a pin shaft, which does not have sufficient bending resistance in the horizontal direction perpendicular to the cable direction. When crosswind occurs, the root of the swing column is prone to bending damage. Utility Model Content

[0004] The technical problems to be solved by the utility model are: ① the problem that the flexible bracket of the traditional swing column scheme has poor reliability and is prone to large-scale collapse on a mountainous area with a large slope; ② the problem that the root of the swing column is prone to failure; ③ the problem that the installation accuracy of the swing column is poor and the construction efficiency is low; ④ the problem that the swing column is difficult to flexibly adjust to follow the slope.

[0005] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:

[0006] A central column system of a photovoltaic flexible support that can adapt to extremely steep mountain slopes comprises a support composed of a vertically arranged central column and a horizontally arranged central top beam, and the sides of the support are movably connected with inner supports.

[0007] Preferably, the top of the center column is connected to the center top beam through a beam-column connecting plate.

[0008] Preferably, a center column bottom plate is provided at the bottom of the center column.

[0009] Preferably, the top of the center column is connected to the middle of the center top beam, and the bottom surfaces of the center top beam arranged on both sides of the center column are connected to the center column through a center column diagonal brace respectively.

[0010] More preferably, both ends of the central column diagonal brace are connected to the central top beam and the central column through a beam-column ear plate respectively.

[0011] Preferably, one end of the inner support is connected to the bracket through a column top ear plate, and the other end is provided with an inner support ear plate.

[0012] Preferably, the top of the center column is connected to the midpoint of the center top beam in the length direction, and the inner support is movably connected to the side of the connection.

[0013] Preferably, the inner support can rotate on a vertical plane perpendicular to the plane where the bracket is located.

[0014] Preferably, the length of the inner support is greater than the length of the center column.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The structure of the neutral column system with internal support is more stable and reliable, the force is clear and reasonable, and the problem of large-scale collapse that is prone to occur in traditional flexible supports is effectively eliminated;

[0017] 2. The central column system with internal support has greater lateral stiffness, which can not only improve the prestress relaxation problem of steel strands, but also reduce cable deflection;

[0018] 3. The foundation used in conjunction with the neutral column system with internal support can achieve a smaller pile diameter and pile depth, effectively saving the system construction cost;

[0019] 4. The root node of the central column system with internal support is more stable and reliable when facing complex crosswind conditions;

[0020] 5. The neutral column system with internal support has high installation efficiency, high fault tolerance, and strong adaptability under different slopes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A front view of the center column system provided by the utility model;

[0022] Figure 2 for Figure 1 Side view of

[0023] Figure 3 It is a schematic diagram of the utility model when in use. DETAILED DESCRIPTION

[0024] In order to make the present invention more obvious and easy to understand, preferred embodiments are described in detail as follows in conjunction with the accompanying drawings.

[0025] Example

[0026] like Figure 1 , 2 As shown, a central column system of a photovoltaic flexible support for mountainous areas with a large slope provided by the utility model is provided. The system includes a support composed of a vertically arranged central column 6 and a horizontally arranged central top beam 1. The top of the central column 6 is connected to the midpoint of the central top beam 1 in the length direction through a beam-column connecting plate 5, and a central column bottom plate 7 is provided at the bottom of the central column 6. The bottom surfaces of the central top beam 1 arranged on both sides of the central column 6 are respectively connected to the central column 6 through a central column diagonal brace 3, and the two ends of the central column diagonal brace 3 are respectively connected to the central top beam 1 and the central column 6 through a beam-column ear plate 2. Both sides of the beam-column connecting plate 5 extend outward from the connecting surface. An inner support 9 (the length of the inner support is greater than that of the central column) is movably connected to the side of the support. One end of the inner support 9 is movably connected to the column top ear plate 8, and the column top ear plate 8 is fixedly connected to the central column 6. The other end of the inner support 9 is provided with an inner support ear plate 4, and the inner support 9 can rotate on a vertical plane perpendicular to the plane where the support is located.

[0027] The installation process of this system is as follows:

[0028] The center column bottom plate 7 at the bottom of the center column 6 is bolted to the foundation embedded parts; the center top beam 1 is bolted to the center column 6 through the beam-column connecting plate 5; the center column diagonal brace 3 is bolted to the center top beam 1 and the center column 6 through the beam-column ear plate 2; one end of the inner support 9 is connected to the center column 6 through the column top ear plate 8, and the inner support ear plate 4 at the other end is connected to the inner support pile through the embedded parts. Install multiple center column systems as needed. After installation, Figure 3 shown.

Claims

1. A central column system for photovoltaic flexible support that can adapt to ultra-large slope mountain areas, characterized in that: The invention comprises a bracket composed of a vertically arranged middle column (6) and a horizontally arranged middle top beam (1), and the side surface of the bracket is movably connected with an inner support (9).

2. The center column system according to claim 1, characterized in that: The top of the middle column (6) is connected to the middle top beam (1) via a beam-column connecting plate (5).

3. The center column system according to claim 1, characterized in that: A center column bottom plate (7) is provided at the bottom of the center column (6).

4. The center column system according to claim 1, characterized in that: The top of the central column (6) is connected to the middle of the central top beam (1), and the bottom surfaces of the central top beam (1) arranged on both sides of the central column (6) are connected to the central column (6) through a central column diagonal brace (3) respectively.

5. The center column system according to claim 4, characterized in that: The two ends of the central column diagonal brace (3) are respectively connected to the central top beam (1) and the central column (6) via a beam-column ear plate (2).

6. The center column system according to claim 1, characterized in that: One end of the inner support (9) is connected to the bracket via a column top ear plate (8), and the other end is provided with an inner support ear plate (4).

7. The center column system according to claim 1, characterized in that: The top of the middle column (6) is connected to the midpoint of the middle top beam (1) in the length direction, and the inner support (9) is movably connected to the side of the connection.

8. The center column system according to claim 1, characterized in that: The length of the inner support (9) is greater than the length of the center column (6).

9. The center column system according to any one of claims 1 to 8, characterized in that: The inner support (9) can rotate on a vertical plane perpendicular to the plane where the bracket is located.

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