Photovoltaic support system suitable for mountain terrain

Abstract

The photovoltaic support system comprises single pile foundations which are linearly arranged from low to high along the slope direction of the mountain land, and an end anchoring pile is arranged in front of the single pile foundation at the highest point; pre-embedded connecting pieces are arranged in the single pile foundation and the end anchoring piles respectively; each single pile foundation is provided with a self-stabilization type photovoltaic supporting frame through an embedded connecting piece, and a purline is installed between the top ends of the adjacent self-stabilization type photovoltaic supporting frames. And end pile braces are arranged between the end anchoring piles and the adjacent self-stabilizing photovoltaic support frames. The photovoltaic support system is designed to be vertically arranged along the terrain single pile, the number of pile foundations of the support system is reduced, site construction is easier, the photovoltaic support system can be suitable for the construction environment under the large gradient, overall vertical arrangement is more flexible, occupied land is saved, adaptability to site conditions is higher, and application in the mountain environment is more economical and feasible.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic installation, and in particular to a photovoltaic support system suitable for mountainous terrain. Background Art

[0002] The traditional fixed-bracket photovoltaic construction scenarios are mainly based on relatively flat plains, deserts and grasslands. The resources of steep mountainous areas are affected by the terrain, the photovoltaic inclination angle is difficult to control, and the installation efficiency is low in steep mountainous terrain. The traditional fixed-bracket photovoltaic layout has limitations.

[0003] At present, there are two main types of support system designs used for photovoltaics in steep mountainous areas, namely fixed photovoltaic support and flexible support systems.

[0004] The design of fixed photovoltaic bracket is as follows: the whole string of components is arranged horizontally and transversely. The foundation of the string bracket is mostly made of two rows of piles (cast-in-place piles, spiral steel pipe piles, etc.) in front and back. The inclination angle of the component is adjusted by the height difference of the two rows of piles. The front and rear columns of the component bracket are fixed on the completed pile foundation with "C" steel or round steel. There is a certain height, and a certain distance needs to be reserved between the front and rear row of components in the string. This scheme has the following disadvantages: (1) The design of the front and rear columns increases the number of pile foundations, and the construction of pile foundations in steep mountainous areas is difficult and inefficient, which increases the construction cost; (2) The string of components is arranged horizontally and transversely. The front and rear row of components in the string need to reserve a certain distance to avoid obstruction to ensure power generation efficiency, but the land utilization rate is low; (3) The design of the fixed photovoltaic bracket system has certain requirements for the mountain slope. If the mountain slope is large (greater than 30°), the height difference between the front and rear columns increases, and the components cannot be installed. This scheme is difficult to apply.

[0005] The flexible bracket is designed as follows: the string of components can be arranged vertically or horizontally as a whole. The foundation adopts two forms: end piles and middle piles. The end piles and middle piles fix the round steel portal frame and are anchored with ground anchor ropes. The bracket uses flexible steel cables to be tensioned by the end piles, and the components are installed on the flexible steel cables. This scheme has the following disadvantages: (1) After the flexible steel cable bracket is installed, its expansion and deflection need to be re-measured regularly. If the expansion and deflection values ​​increase or the deflection values ​​of the two steel wire ropes in the same row of components are different, the flexible steel cable bracket needs to be tensioned for the second time until the expansion and deflection are stable; (2) The number of end piles and middle piles of the flexible bracket is still large, and the ground anchor construction is increased, which requires a large workload. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a photovoltaic support system suitable for mountainous terrain, which has good structural stability and is easy to install in mountainous terrain.

[0007] To solve the above technical problems, the technical solution of the utility model is: a photovoltaic support system applicable to mountainous terrains, including single-pile foundations arranged linearly from low to high along the mountain slope direction, and an end anchoring pile is arranged in front of the single-pile foundation at the highest point; embedded connecting pieces are respectively arranged in the single-pile foundations and the end anchoring piles; each single-pile foundation is respectively installed with a self-stabilizing photovoltaic support frame through the embedded connecting pieces, and purlins are respectively installed between the tops of adjacent self-stabilizing photovoltaic support frames; an end pile tie bar is arranged between the end anchoring pile and the adjacent self-stabilizing photovoltaic support frame.

[0008] As a preferred technical solution, the embedded connecting piece is a steel sleeve.

[0009] As a preferred technical solution, the self-stabilizing photovoltaic support frame includes a column embedded in the steel sleeve, a cross beam is fixedly connected to the top of the column, and diagonal braces are respectively fixedly connected between the two ends of the cross beam and the middle of the column; purlins are respectively fixedly installed on the left and right sides of the cross beam.

[0010] As a preferred technical solution, a front pile tie bar is arranged between two adjacent self-stabilizing photovoltaic support frames located at the front high end along the mountain slope direction.

[0011] As a preferred technical solution, there are two front pile tie bars arranged diagonally.

[0012] As a preferred technical solution, a rear pile tie bar is arranged between two adjacent self-stabilizing photovoltaic support frames located at the rear low end along the mountain slope direction.

[0013] As a preferred technical solution, there are two rear pile tie bars arranged diagonally.

[0014] As a preferred technical solution, the column and the steel sleeve are fastened by bolts.

[0015] As a preferred technical solution, a purlin tie bar is arranged between the purlins on the left and right sides.

[0016] Due to the adoption of the above technical solution, the utility model has at least the following beneficial effects: Combining the principles of hard connection of purlins, end pile ground anchor fixation and stability of the intermediate pile triangular system, the photovoltaic support system is designed with single piles arranged vertically along the terrain, reducing the number of pile foundations of the support system and making it easier for on-site construction. Under the condition of meeting the force of wind load, snow load, etc. of the support, the support system has good stability. This design of the photovoltaic support system is applicable to the construction environment with a large slope, and the overall vertical arrangement is more flexible, saving land, more adaptable to site conditions, and more economical and feasible in mountainous environments. Description of the Drawings

[0017] The following drawings are only intended to illustrate and explain the present utility model, and do not limit the scope of the present utility model. Among them:

[0018] Figure 1 is a side view schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 a partial enlarged view at I in

[0020] Figure 3 is a top view schematic diagram of an embodiment of the present utility model;

[0021] Figure 4 is Figure 3 a sectional structure schematic diagram in the A-A direction in

[0022] In the figure: 1 - single-pile foundation; 2 - end anchoring pile; 3 - embedded connecting piece; 4 - self-stabilizing photovoltaic support frame; 41 - column; 42 - cross beam; 43 - diagonal brace; 5 - purlin; 6 - end pile tie bar; 7 - front pile tie bar; 8 - rear pile tie bar; 9 - purlin tie bar; 10 - photovoltaic module. Specific embodiments

[0023] The present utility model will be further described below in conjunction with the drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. It is understood that those of ordinary skill in the art can recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present utility model. Therefore, the drawings and the description are illustrative in nature and are not used to limit the scope of protection of the claims.

[0024] As Figures 1 to 4 shown, a photovoltaic support system suitable for mountainous terrain includes single-pile foundations 1 arranged linearly from low to high along the mountain slope direction, that is, the foundation adopts a single-pile form (the pile foundation can adopt cast-in-place piles), and multiple single-pile foundations 1 are arranged in a line. An end anchoring pile 2 is provided in front of the single-pile foundation 1 at the highest point for the anchoring and reinforcement of the end pile in the later stage; embedded connecting pieces 3 are respectively arranged in the single-pile foundation 1 and the end anchoring pile 2, and the embedded connecting piece 3 is preferably a steel sleeve; each single-pile foundation 1 is respectively installed with a self-stabilizing photovoltaic support frame 4 through the embedded connecting piece 3, and purlins 5 are respectively installed between the tops of adjacent self-stabilizing photovoltaic support frames 4; an end pile tie bar 6 is arranged between the end anchoring pile 2 and the adjacent self-stabilizing photovoltaic support frame 4.

[0025] Refer to Figure 4, the self-stabilizing photovoltaic support frame 4 includes a column 41 embedded in the embedded connecting piece 3 (steel sleeve), and the column 41 is fastened to the steel sleeve by bolts. The column 41 can be made of steel pipe or round steel. The top of the column 41 is fixedly connected with a cross beam 42, and diagonal braces 43 are fixedly connected between the two ends of the cross beam 42 and the middle part of the column 41 respectively. In this way, the column 41, the cross beam 42, and the diagonal brace 43 form an inverted triangle, and the whole forms a self-stabilizing structure, which can transfer the top force to the root of the column 41 and the single-pile foundation 1; purlins 5 are fixedly installed on the upper left and right sides of the cross beam 42 respectively, and the photovoltaic modules 10 are horizontally fixed on the purlins 5. In this way, adjacent self-stabilizing photovoltaic support frames 4 are rigidly connected through the purlins 5 (the distance between adjacent columns is temporarily based on the width of three rows of horizontally installed photovoltaic modules, and subsequent adjustment design can be carried out according to the mountain slope and the force system of the support).

[0026] Reference Figure 3 , the distance span between adjacent self-stabilizing photovoltaic support frames 4 is relatively large. To ensure its stability, a purlin bracing bar 9 is erected in the middle part of the purlins 5 on the left and right sides between adjacent columns with a large span to ensure the overall stability of the photovoltaic support system. In this embodiment, the cross beam, the diagonal brace, the purlin, and the purlin bracing bar can all be made of "C" steel.

[0027] Reference Figure 1 and Figure 2 , an end anchoring pile 2 is arranged in front of the single-pile foundation 1 at the highest point. The end pile anchoring pile 2 is fixed to the top of the adjacent self-stabilizing photovoltaic support frame 4 by an end pile bracing bar 6 to form a triangular force system, sharing the force of the end pile and stabilizing the structure. To strengthen the stability of the support system, a front pile bracing bar 7 is arranged between two adjacent self-stabilizing photovoltaic support frames 4 located at the high end in the front along the mountain slope direction. The front pile bracing bar 7 is two and arranged diagonally for tensioning to stabilize the overall structure. By the same principle, a rear pile bracing bar 8 is arranged between two adjacent self-stabilizing photovoltaic support frames 4 located at the low end in the rear along the mountain slope direction. The rear pile bracing bar 8 is also two and arranged diagonally for tensioning to stabilize the overall structure. In this embodiment, the end pile bracing bar 6, the front pile bracing bar 7, and the rear pile bracing bar 8 can all be made of round steel or deformed steel.

[0028] The utility model combines the principles of purlin rigid connection, end pile ground anchor fixation, and intermediate pile triangular system stability, designs the photovoltaic support system as a single-pile vertical arrangement along the terrain, reduces the number of pile foundations of the support system, and is more conducive to on-site construction. Under the condition of meeting the force of the support such as wind load and snow load, the stability of the support system is good.

[0029] This design of the photovoltaic support system is applicable to the construction environment with a large slope, and the overall vertical arrangement is more flexible, saves land, has stronger applicability to site conditions, and is more economical and feasible in the mountain environment.

[0030] The above are only illustrative specific embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present utility model shall fall within the scope of protection of the present utility model.

Claims

1. Photovoltaic support system suitable for mountainous terrain, characterized by: It includes single pile foundations arranged in a line from low to high along the mountain slope, and an end anchor pile is arranged in front of the single pile foundation at the highest point; embedded connectors are respectively arranged in the single pile foundation and the end anchor pile; each of the single pile foundations is respectively installed with a self-stabilizing photovoltaic support frame through the embedded connector, and purlins are respectively installed between the top ends of adjacent self-stabilizing photovoltaic support frames; an end pile tie rod is arranged between the end anchor pile and the adjacent self-stabilizing photovoltaic support frame.

2. The photovoltaic support system suitable for mountainous terrain as claimed in claim 1, characterized in that: The embedded connecting piece is a steel sleeve.

3. The photovoltaic support system suitable for mountainous terrain as claimed in claim 2, characterized in that: The self-stabilizing photovoltaic support frame includes a column embedded in the steel sleeve, the top of the column is fixedly connected to a beam, and diagonal braces are fixedly connected between the two ends of the beam and the middle of the column respectively; purlins are fixedly installed on the left and right sides of the beam respectively.

4. The photovoltaic support system suitable for mountainous terrain as claimed in claim 3, characterized in that: A front pile tie bar is arranged between two adjacent self-stabilizing photovoltaic support frames located at the front high end along the mountain slope direction.

5. The photovoltaic support system suitable for mountainous terrain as claimed in claim 4, characterized in that: There are two front pile tie bars which are arranged diagonally.

6. The photovoltaic support system suitable for mountainous terrain as claimed in claim 3, characterized in that: A rear pile tie bar is arranged between two adjacent self-stabilizing photovoltaic support frames located at the rear lower end along the mountain slope direction.

7. The photovoltaic support system suitable for mountainous terrain as claimed in claim 6, characterized in that: There are two rear pile tie bars which are arranged diagonally.

8. The photovoltaic support system suitable for mountainous terrain as claimed in claim 3, characterized in that: The upright column and the steel sleeve are fastened by bolts.

9. The photovoltaic support system suitable for mountainous terrain according to any one of claims 3 to 8, characterized in that: Purlin braces are arranged between the purlins on the left and right sides.

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