Photovoltaic flexible support

Abstract

The invention belongs to the technical field of new energy power generation, and discloses a photovoltaic flexible support which comprises two supporting assemblies, a connecting assembly used for installing a photovoltaic assembly is arranged between the two supporting assemblies, and each supporting assembly comprises a concrete raft and a supporting frame body. The concrete raft plate is a beam type raft plate, a plurality of beam bodies are arranged in the length direction of the concrete raft plate, the concrete raft plate is cast on the ground, embedded parts are embedded in the beam bodies of the concrete raft plate, a plurality of supporting frame bodies are arranged, and the supporting frame bodies and the beam bodies are arranged in a one-to-one correspondence mode. The heights of the multiple supporting frame bodies are gradually increased or decreased in the length direction of the concrete raft, the supporting frame bodies are of a triangular cone structure, all the supporting frame bodies are connected with all the embedded parts on a beam body, first tensioning parts are connected between the adjacent supporting frame bodies, and second tensioning parts are connected between the connecting assemblies and the supporting frame bodies. The photovoltaic flexible support adopts a concrete raft as a foundation, and the width of the concrete raft is adaptively adjusted through the bearing capacity of the foundation to ensure the bearing capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy power generation, and in particular to a photovoltaic flexible bracket. Background Art

[0002] Photovoltaic brackets are used to support photovoltaic modules and secure them to protect them from damage by weather factors such as strong winds.

[0003] Ground photovoltaic brackets are mainly divided into three types: fixed brackets, tracking brackets and flexible brackets. Among them, fixed brackets use the maximum inclination angle of solar radiation in a year as the installation inclination angle of the bracket assembly. The angle is not adjustable or needs to be adjusted manually. It is widely used in mountains, hills, plains and other terrains; tracking brackets detect the sun's position and actively adjust the orientation of the bracket assembly to maximize the use of solar radiation under the same conditions. It is suitable for plains, mountainous areas with relatively flat terrain, and other terrains; the main feature of flexible brackets is that they have a wide range of applications and can maximize land space utilization in large spans, complex terrains, rugged mountainous areas, and slopes. Compared with fixed brackets and tracking brackets, they have fewer foundations, reduce earth excavation, and reduce the impact on the existing environment.

[0004] Existing photovoltaic flexible brackets transfer the gravity load of photovoltaic panels and the wind load and snow load acting on photovoltaic panels to spiral piles by using upper brackets; or, transfer the gravity load of photovoltaic panels and the wind load and snow load acting on photovoltaic panels to pipe piles through horizontal cables, and then transfer the horizontal force on the pipe piles to the ground anchors through inclined cables.

[0005] In complex sites such as backfill tailings and backfill soil, spiral piles are used. Due to uneven settlement, the upper components will be deformed, which may easily lead to hidden cracks in photovoltaic components. When the soil properties are poor, the interface size and length of the spiral piles need to be increased, which increases the economic cost. Pipe piles, inclined cables and anchors may fail due to uneven settlement, loosen the flexible support system, and eventually become unstable as a whole. When the soil properties are poor, there may be large negative friction and low horizontal bearing capacity, which requires increasing the cross-sectional size and length of the pipe piles, which increases the economic cost.

[0006] Therefore, it is urgent to design a new photovoltaic flexible bracket to improve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a photovoltaic flexible bracket to solve the technical problem of low structural stability caused by uneven settlement in complex sites such as backfill tailings and backfill soil.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] A photovoltaic flexible bracket includes a support assembly, wherein at least two groups of the support assemblies are provided, and a connecting assembly for installing a photovoltaic assembly is provided between the two groups of the support assemblies, and the support assembly includes:

[0010] Concrete raft slab, wherein the concrete raft slab is a beam-type raft slab and a plurality of beam bodies are arranged along the length direction of the concrete raft slab, the concrete raft slab is cast on the ground and embedded parts are embedded in the beam body;

[0011] A support frame, wherein a plurality of the support frames are provided, and the plurality of the support frames are arranged in one-to-one correspondence with the plurality of beam bodies, and the heights of the plurality of the support frames gradually increase or decrease along the length direction of the concrete raft slab, and the support frame is a triangular cone structure, and each of the support frames is connected to all the embedded parts on a beam body, a first tensioning member is connected between adjacent support frames, and a second tensioning member is connected between the connecting assembly and the support frame.

[0012] As a preferred solution for the photovoltaic flexible bracket, the beam of the concrete raft is arranged in an X-shape or a cross-shape, and a plurality of the embedded parts are respectively embedded in the four ends and the middle intersection of the beam.

[0013] As a preferred solution of the photovoltaic flexible bracket, the support frame body includes a first support frame, a second support frame and a third support frame, all of which are arranged in a triangular shape, the two ends of the first support frame are respectively connected to the two ends of the beam body, the two ends of the third support frame are respectively connected to the other two ends of the beam body, and one end of the second support frame is connected to the middle intersection of the beam body;

[0014] The other end of the first support frame is rotatably connected to one of the other two ends of the second support frame, and the other end of the third support frame is rotatably connected to the other of the other two ends of the second support frame;

[0015] A supporting height of the first supporting frame is lower than a supporting height of the third supporting frame.

[0016] As a preferred solution for the photovoltaic flexible support, the first support frame, the second support frame and the third support frame are all provided with reinforcing ribs.

[0017] As a preferred solution for a photovoltaic flexible bracket, the first tensioning member includes an inter-column steel tie rod, and the two ends of the inter-column steel tie rod are respectively connected to the second support frames of two adjacent support frames, and the connection points are the same as the connection points where the first support frame is connected to the second support frame and the third support frame is connected to the second support frame.

[0018] As a preferred solution for a photovoltaic flexible bracket, the connecting assembly includes load-bearing steel strands, and at least two load-bearing steel strands are arranged between the two corresponding support frames of the two groups of support assemblies, and the ends of the load-bearing steel strands are arranged on the second support frame through clamps.

[0019] As a preferred solution of the photovoltaic flexible bracket, a wind-resistant triangular brace is provided between the two load-bearing steel strands, and two wind-resistant triangular braces are provided;

[0020] The second tensioning member comprises a wind-resistant steel strand, and two ends of the wind-resistant steel strand are respectively connected to the wind-resistant triangle support and the connection between the second support frame and the beam body through wire clamps.

[0021] As a preferred solution for the photovoltaic flexible support, a steel strand clamp is provided on the load-bearing steel strand through a fastening bolt, a plurality of the steel strand clamps are provided, and the photovoltaic module is installed between two adjacent steel strand clamps.

[0022] As a preferred solution for the photovoltaic flexible support, a component side pressure block is provided on one side of the steel strand clamp installed at both ends of the load-bearing steel strand;

[0023] Alternatively, a component middle pressure block is respectively provided on both sides of the steel strand clamp installed in the middle of the load-bearing steel strand;

[0024] The component side pressing blocks or the component middle pressing blocks are connected to the photovoltaic components through fastening bolts.

[0025] As a preferred solution for the photovoltaic flexible bracket, the embedded parts include ear seats, and the ends of the first support frame, the second support frame, the third support frame and the inter-column steel pull rods are all provided with ear plates, and the ear plates are rotatably connected to the ear seats by bolts.

[0026] Beneficial effects of the present invention:

[0027] By casting concrete raft slabs on complex sites such as backfill tailings slag and backfill soil, using concrete raft slabs as the foundation, the width of the concrete raft slabs is adaptively adjusted according to the bearing capacity of the foundation to ensure the bearing capacity. The top of the concrete raft slab can use materials such as slag and backfill soil to improve the ability to resist overturning and sliding, so as to make full use of the existing resources of the site;

[0028] The triangular cone structure of the support frame is stable, and the first tensioning member is used to connect two adjacent support frames, which further improves the stability of the structure. In addition, before the concrete raft is poured, embedded parts are embedded in the beam body of the concrete raft, and the bottom of the support frame is connected to the embedded parts to disperse the load to the surrounding of the concrete raft, reducing the stress at the connection node. The load on the concrete raft is more dispersed and stable, giving full play to the material properties of the concrete extended foundation, reducing the requirements for the foundation, and having strong adaptability to the geological conditions of the site. In addition, the tilt angle of the photovoltaic module is adjusted by the tilt angle formed by the front and rear height difference of each support frame, and the versatility is good;

[0029] The connecting assembly is the upper load-bearing member of the photovoltaic assembly. A second tensioning member is connected between the connecting assembly and the supporting frame to decompose the load of the connecting assembly to the supporting frame, which is then transferred from the supporting frame to the concrete raft slab, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the structure of a photovoltaic flexible bracket provided by an embodiment of the present invention;

[0031] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0032] Figure 3 is a side view of a photovoltaic flexible bracket provided by an embodiment of the present invention;

[0033] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0034] Figure 5 It is a schematic diagram of the installation structure of the steel strand clamp and the load-bearing steel strand provided in an embodiment of the present invention.

[0035] In the figure:

[0036] 1. Concrete raft slab;

[0037] 2. Support frame; 21. First support frame; 22. Second support frame; 23. Third support frame; 24. Reinforcement ribs;

[0038] 3. Steel tie rods between columns;

[0039] 4. Load-bearing steel strands; 41. Wind-resistant triangular brace; 42. Wind-resistant steel strands;

[0040] 5. Steel strand clamp; 51. Component side pressure block; 52. Component middle pressure block. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0045] Existing photovoltaic flexible brackets transfer the gravity load of photovoltaic panels and the wind load and snow load acting on photovoltaic panels to spiral piles by using upper brackets; or, transfer the gravity load of photovoltaic panels and the wind load and snow load acting on photovoltaic panels to pipe piles through horizontal cables, and then transfer the horizontal force on the pipe piles to the ground anchors through inclined cables.

[0046] In complex sites such as backfill tailings and backfill soil, spiral piles are used. Due to uneven settlement, the upper components will be deformed, which may easily lead to hidden cracks in photovoltaic components. When the soil properties are poor, the interface size and length of the spiral piles need to be increased, which increases the economic cost. Pipe piles, inclined cables and anchors may fail due to uneven settlement, loosen the flexible support system, and eventually become unstable as a whole. When the soil properties are poor, there may be large negative friction and low horizontal bearing capacity, which requires increasing the cross-sectional size and length of the pipe piles, which increases the economic cost.

[0047] In order to solve the above problems, combined Figure 1-Figure 5 As shown, this embodiment provides a photovoltaic flexible bracket, including a support component and a connection component, the support component is provided with at least two groups, the connection component is arranged between the two groups of support components, and the photovoltaic component is installed on the connection component.

[0048] In this embodiment, the support assembly includes a concrete raft 1 and a support frame 2. The concrete raft 1 is a beam-type raft and multiple beams are arranged along the length direction of the concrete raft 1. The concrete raft 1 is cast on the ground and embedded parts are embedded in the beam.

[0049] By casting the concrete raft 1 on complex sites such as backfill tailings slag and backfill soil, the construction process is simple and the site application range is wide; the concrete raft 1 is used as the foundation, and the width of the concrete raft 1 is adaptively adjusted according to the bearing capacity of the foundation to ensure the bearing capacity. It is suitable for application in large-area scenes such as tailings ponds and has high operability.

[0050] In addition, the top of the concrete raft 1 can also use materials such as slag and backfill soil to improve the anti-overturning and anti-slip capabilities, so as to make full use of the existing resources of the site.

[0051] Optionally, the beam of the concrete raft 1 is arranged in an X shape or a cross shape. The beam of the present embodiment is in an X shape, and the ends of each two adjacent beams are connected in sequence. There are five embedded parts, which are respectively embedded in the four ends and the middle intersection of the beam to disperse the load to the surroundings and the middle of the concrete raft 1, thereby reducing the stress at the connection node. The load acting on the concrete raft 1 is more dispersed and stable, giving full play to the material properties of the concrete extended foundation, reducing the requirements for the foundation, and having strong adaptability to the geological conditions of the site.

[0052] In other embodiments, the beam body may also be in a straight line shape, a square shape, or a triangle shape, etc. This embodiment does not specifically limit the shape of the beam body.

[0053] Preferably, the embedded part includes an ear seat, and the bottom end of the ear seat is integrally cast with the concrete raft 1 to ensure the stability of the connection between the ear seat and the concrete raft 1 and to make the ear seat have strong pull-out resistance.

[0054] like Figure 1 and Figure 2 As shown, a plurality of support frames 2 are provided, and the plurality of support frames 2 are provided one by one corresponding to the plurality of beams. The heights of the plurality of support frames 2 gradually increase or decrease along the length direction of the concrete raft 1. The tilt angle of the photovoltaic module is adjusted by the tilt angle formed by the front and rear height difference of each support frame 2, and the versatility is good. Specifically, the support frame 2 is a triangular cone structure, and the bottom end of each support frame 2 is connected to five ear seats on a beam. The triangular cone structure of the support frame 2 is stable and has stronger wind resistance, which avoids the risk of the support frame 2 being damaged by natural environmental factors such as strong wind. The concrete raft 1 and the triangular cone structure are stably supported, which greatly reduces the impact of uneven settlement, optimizes the construction process of the structural system, and reduces the construction difficulty and construction cost.

[0055] Specifically, see Figure 2 The support frame body 2 includes a first support frame 21, a second support frame 22 and a third support frame 23, all of which are arranged in a triangular shape. The second support frame 22 is arranged in the vertical direction, and the two ends of the first support frame 21 are respectively connected to the two ends of the beam body, and the two ends of the third support frame 23 are respectively connected to the other two ends of the beam body. One end of the second support frame 22 is connected to the middle intersection of the beam body, and the other end of the first support frame 21 is rotatably connected to one of the other two ends of the second support frame 22, and the other end of the third support frame 23 is rotatably connected to the other end of the other two ends of the second support frame 22. The first support frame 21 and the third support frame 23 are obliquely arranged to be connected to the second support frame 22, and the support height of the first support frame 21 is lower than the support height of the third support frame 23.

[0056] Among them, the first support frame 21, the second support frame 22 and the third support frame 23 are all provided with reinforcing ribs 24, which extend in the horizontal direction, so that each support frame is arranged in an "A" shape, further strengthening the structural stability of the support frame body 2. The ends of the first support frame 21, the second support frame 22 and the third support frame 23 are all provided with ear plates, and the ear plates are rotatably connected to the ear seats by bolts, with a simple structure and a firm and reliable connection.

[0057] Further, see Figure 2 A first tensioning member is connected between adjacent support frames 2, and two adjacent support frames 2 are connected by the first tensioning member, which further improves the stability of the structure.

[0058] Specifically, the first tensioning member includes an inter-column steel tie rod 3, both ends of which are respectively connected to the second support frames 22 of two adjacent support frame bodies 2, and the connection is the same as the connection between the first support frame 21 and the second support frame 22, and the connection between the third support frame 23 and the second support frame 22, that is, both ends of the inter-column steel tie rod 3 are also provided with ear plates, which are also rotatably connected to the ear plates at the corresponding connections through bolts.

[0059] like Figure 3 and Figure 4 As shown, the connecting assembly includes a load-bearing steel strand 4, and at least two load-bearing steel strands 4 are arranged between the two supporting frames 2 corresponding to the two groups of supporting assemblies. The ends of the load-bearing steel strands 4 are arranged on the second supporting frame 22 through clamps. The flexible support of the load-bearing steel strands 4 is adopted to reduce the number of supports, which is suitable for use in large-span scenarios.

[0060] Further, see Figure 4 A second tensioning member is connected between the connecting assembly and the supporting frame 2. The connecting assembly is the upper load-bearing component of the photovoltaic assembly. The second tensioning member is connected between the connecting assembly and the supporting frame 2 to decompose the load of the connecting assembly to the supporting frame 2, and then transferred from the supporting frame 2 to the concrete raft 1, which has better stability.

[0061] Specifically, a wind-resistant triangular brace 41 is arranged between the two load-bearing steel strands 4, and two wind-resistant triangular braces 41 are arranged. The second tensioning member includes a wind-resistant steel strand 42, and both ends of the wind-resistant steel strand 42 are respectively connected to the wind-resistant triangular brace 41 and the connection between the second support frame 22 and the beam body through wire clamps.

[0062] Preferably, the wire clamp of this embodiment is an adjustable NUT wire clamp, one end of which is connected to the wind-resistant triangular support 41, and the other end is connected to the embedded part connected to the second support frame 22, and the tightness of the wind-resistant steel strand 42 is adjusted by adjusting the tightness of the nut of the adjustable NUT wire clamp. Since the adjustable NUT wire clamp is a prior art, it will not be described in detail here.

[0063] like Figure 5 As shown, a steel strand clamp 5 is provided on the load-bearing steel strand 4 by fastening bolts, and there are multiple steel strand clamps 5. The photovoltaic module is installed between two adjacent steel strand clamps 5, and a module side pressure block 51 is provided on one side of the steel strand clamps 5 installed at both ends of the load-bearing steel strand 4, or, a module middle pressure block 52 is provided on both sides of the steel strand clamp 5 installed in the middle of the load-bearing steel strand 4, respectively. The module side pressure block 51 or the module middle pressure block 52 are connected to the photovoltaic module by fastening bolts, so that the photovoltaic module is firmly fixed to the two parallel load-bearing steel strands 4 by fastening bolts, and the steel strand clamp 5, the module middle pressure block 52 and the module side pressure block 51 are fixed to the two parallel load-bearing steel strands 4.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A photovoltaic flexible bracket, characterized in that: The invention comprises a supporting assembly, wherein at least two groups of the supporting assembly are provided, and a connecting assembly for installing a photovoltaic assembly is provided between the two groups of the supporting assembly, and the supporting assembly comprises: A concrete raft slab (1), wherein the concrete raft slab (1) is a beam-type raft slab and a plurality of beam bodies are arranged along the length direction of the concrete raft slab (1); the concrete raft slab (1) is cast on the ground and embedded parts are embedded in the beam bodies; A support frame (2), wherein a plurality of the support frames (2) are provided, the plurality of the support frames (2) are provided in one-to-one correspondence with the plurality of beam bodies, the heights of the plurality of the support frames (2) gradually increase or decrease along the length direction of the concrete raft slab (1), the support frame (2) is a triangular pyramid structure, each of the support frames (2) is connected to all the embedded parts on a beam body, a first tensioning member is connected between adjacent support frames (2), and a second tensioning member is connected between the connecting assembly and the support frame (2).

2. The photovoltaic flexible bracket according to claim 1, characterized in that: The beam body of the concrete raft slab (1) is arranged in an X-shape or a cross-shape, and a plurality of embedded parts are respectively embedded in the four ends and the middle intersection of the beam body.

3. The photovoltaic flexible bracket according to claim 2, characterized in that: The support frame body (2) comprises a first support frame (21), a second support frame (22) and a third support frame (23) all arranged in a triangular shape, the two ends of the first support frame (21) are respectively connected to the two ends of the beam body, the two ends of the third support frame (23) are respectively connected to the other two ends of the beam body, and one end of the second support frame (22) is connected to the middle intersection of the beam body; The other end of the first support frame (21) is rotatably connected to one of the other two ends of the second support frame (22), and the other end of the third support frame (23) is rotatably connected to the other of the other two ends of the second support frame (22); The support height of the first support frame (21) is lower than the support height of the third support frame (23).

4. The photovoltaic flexible bracket according to claim 3, characterized in that: The first support frame (21), the second support frame (22) and the third support frame (23) are all provided with reinforcing ribs (24).

5. The photovoltaic flexible bracket according to claim 3, characterized in that: The first tensioning member includes an inter-column steel tie rod (3), both ends of which are respectively connected to the second support frames (22) of two adjacent support frames (2), and the connection points are the same as the connection points where the first support frame (21) is connected to the second support frame (22) and the third support frame (23) is connected to the second support frame (22).

6. The photovoltaic flexible bracket according to claim 3, characterized in that: The connection assembly comprises a load-bearing steel strand (4), at least two of the load-bearing steel strands (4) are arranged between two corresponding support frames (2) of the two groups of support assemblies, and the ends of the load-bearing steel strands (4) are arranged on the second support frame (22) via a clamp.

7. The photovoltaic flexible bracket according to claim 6, characterized in that: A wind-resistant triangular brace (41) is provided between the two load-bearing steel strands (4), and two wind-resistant triangular braces (41) are provided; The second tensioning member comprises a wind-resistant steel strand (42), and two ends of the wind-resistant steel strand (42) are respectively connected to the wind-resistant triangle support (41) and the connection between the second support frame (22) and the beam body through wire clamps.

8. The photovoltaic flexible bracket according to claim 6, characterized in that: The load-bearing steel strand (4) is provided with a steel strand clamp (5) via a fastening bolt, a plurality of the steel strand clamps (5) are provided, and a photovoltaic module is installed between two adjacent steel strand clamps (5).

9. The photovoltaic flexible bracket according to claim 8, characterized in that: An assembly edge pressing block (51) is provided on one side of the steel strand clamp (5) installed at both ends of the load-bearing steel strand (4); Alternatively, a component middle pressure block (52) is respectively provided on both sides of the steel strand clamp (5) installed in the middle of the load-bearing steel strand (4); The component side pressing block (51) or the component middle pressing block (52) is connected to the photovoltaic component via fastening bolts.

10. The photovoltaic flexible bracket according to claim 5, characterized in that: The embedded parts include ear seats, and the ends of the first support frame (21), the second support frame (22), the third support frame (23) and the inter-column steel tie rod (3) are all provided with ear plates, and the ear plates are rotatably connected to the ear seats by bolts.

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