Photovoltaic pile foundation based on photovoltaic power station

Abstract

The invention relates to a photovoltaic pile foundation based on a photovoltaic power station, and belongs to the technical field of photovoltaic power generation equipment.The photovoltaic pile foundation comprises a base embedded in a concrete foundation, a supporting pipe is inserted into the base, the bottom end of the supporting pipe is inserted into a mounting hole of the base, and the bottom end of the mounting hole is provided with an expanded inner expanding cavity; a plurality of hinge pieces are hinged to the bottom end of the supporting pipe in an annular array mode, a driving assembly is further coaxially installed in the supporting pipe and fixedly connected with the supporting pipe in a threaded fit mode, and in the process that the driving assembly is rotated to achieve fixed connection, the hinge pieces are hinged to the bottom end of the supporting pipe in an annular array mode. The sections, located outside the supporting pipe, of all the hinge pieces synchronously turn over towards the outer side of the supporting pipe and are tightly attached to the cavity wall of the inner expansion cavity to be fixedly connected with the supporting pipe. The photovoltaic pile foundation based on the photovoltaic power station is stable in structure, good in wind and snow resistance, capable of being quickly disassembled and assembled, capable of being directly recycled and convenient and fast to overhaul and replace.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation equipment, and in particular to a photovoltaic pile foundation based on a photovoltaic power station. Background Art

[0002] The pile foundation of a photovoltaic power generation system refers to the underlying structure used to support the photovoltaic mounting brackets and solar panels in a photovoltaic power generation system. The pile foundation's primary function is to withstand the weight of the photovoltaic modules, as well as external loads such as wind and snow, ensuring the safe operation and long-term stability of the photovoltaic power generation system.

[0003] Specifically, photovoltaic pile foundations are an integral part of solar photovoltaic systems. They are primarily constructed on-site through on-site piling, typically using reinforced concrete steel pipe piles or simple steel pipe piles. The photovoltaic pile foundation structure comprises steel pipes, pile bodies, reinforcement, and concrete, all of which together ensure high strength and durability. Currently, photovoltaic pile foundations are constructed using flexible methods, primarily aiming for secure installation, strong wind resistance, low construction costs, and long-term environmental durability.

[0004] To ensure reliable installation, existing pile foundations are complex, requiring numerous load-bearing structures such as reinforcing beams. Most are welded and installed on-site, or partially welded before shipment, followed by bolting and final assembly welding on-site. This is a complex operation requiring component-by-component assembly and splicing. Once installed, these structures cannot be disassembled, let alone effectively recycled or reused. Dismantling is often done violently, or simply left on-site for new pile foundation construction. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a photovoltaic pile foundation based on a photovoltaic power station. The photovoltaic pile foundation based on the photovoltaic power station adopts a modular design, can be quickly assembled and disassembled, can be recycled, is easy to maintain and repair, and has a very strong structure and good resistance to wind and snow.

[0006] The present invention is achieved through the following technical solutions:

[0007] A photovoltaic pile foundation based on a photovoltaic power station includes a base pre-buried in a concrete foundation, a support tube inserted in the base, the bottom end of the support tube inserted into the mounting hole of the base, the bottom end of the mounting hole having an enlarged inner expansion cavity; a plurality of hinged parts are hinged in a circular array at the bottom end of the support tube, and a drive assembly is also coaxially installed in the support tube, the drive assembly is fixedly connected to the support tube in the form of a threaded fit, and in the process of rotating the drive assembly to achieve a fixed connection, all the hinged parts located outside the support tube are synchronously flipped toward the outside of the support tube, and are tightly attached to the cavity wall of the inner expansion cavity and fixed to the support tube.

[0008] Furthermore, the base includes a base and a mounting tube perpendicular to the center of the base, the mounting hole is a tube hole of the mounting tube, the inner expansion cavity is arranged in the inner center of the base and has a frustum-shaped structure, and the inner expansion cavity is coaxially connected to the mounting hole.

[0009] Furthermore, a positioning collar is coaxially fixed on the support tube, and the positioning collar is in contact with the top end surface of the mounting tube so that the bottom end of the support tube does not contact the bottom surface of the inner expansion cavity.

[0010] Furthermore, the bottom end of the mounting tube has a plurality of notches, each of which is hinged with the hinge part, and the hinge part is a bent plate-like structure, which is hinged in the notch at the bend; the driving assembly includes a support platform, a driving column, and a moving block, the support platform includes a column coaxially located in the mounting tube and a mounting plate vertically connected to the column as a whole, the periphery of the connection between the support platform and the column is provided with a threaded sleeve portion, the threaded sleeve portion is threadedly engaged with the external thread at the top of the mounting tube and fixed, the column is coaxially connected to the upper section of the driving column, and they are temporarily connected to each other as a whole by a push spring, the lower section of the driving column axially passes through the moving block in the form of a threaded fit, and the moving block is installed in an axial sliding fit with the mounting hole, so that when the support platform is rotated:

[0011] The driving column rotates and moves downward therewith until the driving column contacts the bottom of the inner expansion cavity. The moving block moves downward through the threaded pair to squeeze the hinge, so that a section of the hinge is tightly attached to the wall of the inner expansion cavity. Then, the support platform is further squeezed axially and continues to rotate, so that the push spring is further compressed until the threaded sleeve is fastened to the mounting tube.

[0012] Furthermore, the bottom end of the column has a stepped hole, in which the push spring is axially installed. The upper section of the push spring is located at the bottom of the stepped hole, and the lower section extends out of the stepped surface at the bottom of the stepped hole and connects with the top end of the column.

[0013] Furthermore, a slide plate is connected to the end of the lower section of the push spring, and the top of the column is a frustum that is larger than the rest of the section, and the free end of the frustum fits with the end face of the slide plate.

[0014] Furthermore, the lower section of the driving column includes a threaded rod section, which is threadedly connected to the moving block and a fixed block at the same time. The fixed block is fixed in the mounting hole, and the lower end of the fixed block is coaxially docked with the moving block. The two opposite sides of the moving block each have a guide block, and the guide blocks are slidably connected to two guide grooves arranged opposite to each other in the mounting hole. When the two guide blocks are located in the two guide grooves, the threaded holes of the moving block and the fixed block respectively dock with each other to form a splicing hole that allows the threaded rod sections to be threadedly connected at the same time.

[0015] Furthermore, the movable block and the fixed block are connected together by an elastic element, and the elastic element firmly pulls the movable block to a position in contact with the bottom end surface of the fixed block, so that when the bottom end of the driving column does not contact the bottom of the inner expansion cavity, the movable block and the fixed block are not separated.

[0016] Furthermore, the driving column also includes a supporting plate located at the bottom end, which is vertically fixed to the driving column, and in the initial state, the supporting plate squeezes a section of the hinge located in the mounting hole until it contacts the bottom inner edge of the notch, so that the section of the hinge located outside the mounting tube is in a vertical state at this time, so that the hinge does not affect the insertion of the mounting tube into the mounting hole.

[0017] Furthermore, after the threaded sleeve portion is screwed to the limit on the top end of the support tube, the threaded sleeve portion and the support tube are screwed in and reinforced by radially arranged locking screws.

[0018] The beneficial effects of the present invention are:

[0019] The photovoltaic pile foundation based on the photovoltaic power station adopts a modular design. Through the pre-buried base, the support tube is inserted into the base. With the special structural design of the driving component in the support tube, the photovoltaic pile foundation can be installed quickly and the structure is very reliable. It has a triple fixing effect. The first is the extrusion support effect between the driving column or the pressure plate and the bottom of the inner expansion cavity. The second is the extrusion effect between the hinge and the side wall of the inner expansion cavity, which is fully and comprehensively stressed. The third is the threaded sleeve part of the support platform and the threaded bone of the mounting tube. The three fixing structures realize the connection contact of the corresponding components and jointly play the role of fixing the support platform, or are used to install photovoltaic panel brackets or photovoltaic panel mounting plates to ensure that photovoltaic equipment such as photovoltaic panels are firmly mounted on the mounting plate.

[0020] It is very convenient to install and disassemble. Reverse and loosen the support table, and the threaded sleeve can pop out of the top of the installation tube. Then continue to reverse the support table to allow the drive column or the load-bearing plate to separate from the bottom of the inner expansion cavity, and move the moving block upward, and then release the hinge, and let the hinge return to its initial state, and then directly take out the support tube. In this way, it can be recycled and only the base is lost, or it can be easy to maintain. After taking out the support tube and the drive assembly at the later time, you can directly replace them with new components. Because the base itself has a simple structure and is pre-buried and installed, it is not easy to be damaged and is not a wearing part.

[0021] This photovoltaic pile foundation not only saves installation time, but also reduces transportation costs. It has a stable structure and good wind resistance, cost-effectiveness and durability.

[0022] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a cross-sectional view of the present invention when the support tube is just inserted into the installation tube;

[0024] Figure 2 It is a partial cross-sectional view of the bearing plate following the driving column to the bottom of the inner expansion cavity;

[0025] Figure 3 This is a schematic diagram of the structure of the present invention after installation;

[0026] Figure 4 This is a diagram of the elastic connection structure of the movable block and the fixed block of the present invention.

[0027] In the figure: base 1, mounting tube 2, inner expansion cavity 3, support platform 4, column 401, threaded sleeve portion 402, mounting plate 403, support tube 5, guide groove 501, notch 502, positioning collar 6, drive column 7, frustum 701, cylindrical section 702, threaded rod section 703, moving block 8, fixed block 9, hinge 10, bearing plate 11, stepped hole 12, push spring 13, elastic element 14, guide block 15, slide plate 16. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0031] See also Figure 1 The present invention provides a technical solution: a photovoltaic pile foundation based on a photovoltaic power station, the main structure of which includes a base pre-buried in a concrete foundation. After the foundation pit is dug, the base can be buried in the foundation pit, poured with concrete to fix it, and the top end of the base can be exposed to the ground. Specifically, a support tube 5 is inserted into the base, and the support tube 5 is used to bear the bracket of the photovoltaic panel and its own weight. During installation, the bottom end of the support tube 5 is inserted into the mounting hole of the base, and there is an enlarged inner expansion cavity 3 at the bottom end of the mounting hole, that is, the horizontal dimension of the inner expansion cavity 3 is larger than the aperture of the mounting hole. In addition, a number of hinges 10 are hinged in a circular array at the bottom end of the support tube 5. These hinges 10 can be rod-shaped structures, plate-shaped structures, or tubular structures, but it is best to fit the cavity wall of the inner expansion cavity 3. At the same time, in this embodiment, a drive assembly is also coaxially installed in the support tube 5. This drive assembly is fixedly connected to the support tube 5 in the form of threaded cooperation, so as to be finally fixed as one. Moreover, in the process of rotating the drive assembly to achieve fixed connection in the form of threaded connection, all the hinges 10 are located outside the support tube 5. The section must be synchronously flipped toward the outside of the support tube 5, that is, opened, and tightly attached to the wall of the inner expansion cavity 3, so as to be fixed together with the support tube 5. The double fixed installation in the form of threaded fixing and extrusion contact improves the ability to resist external forces such as wind and optimizes the installation stability of the photovoltaic panels.

[0032] In this embodiment, Figure 1 The present base comprises a base 1 and a mounting tube 2 perpendicular to the center of the base 1. The aforementioned mounting hole is the hole of the mounting tube 2, while the aforementioned inner expansion cavity 3 is located in the center of the base 1 and has a truncated cone-shaped structure. The inner expansion cavity 3 and the mounting hole are coaxially connected and formed as a single piece. During specific production, a positioning collar 6 can be coaxially fixed to the support tube 5. The positioning collar 6 is in contact with the top surface of the mounting tube 2. The positioning collar 6 mainly restricts the installation position of the support tube 5, preventing the bottom end of the support tube 5 from contacting the bottom surface of the inner expansion cavity 3, thereby avoiding affecting the normal quick installation operation.

[0033] In this embodiment, the bottom end of the mounting tube 2 has a plurality of notches 502, and a hinge 10 is hinged in each notch 502. Specifically, the hinge 10 may have a connecting section (not shown in the figure) of suitable shape and size to be placed in the notch 502 for hinge connection. The corresponding hinge axis may span the notch 502, with both ends respectively installed in the two opposite side walls of the notch 502, and the above-mentioned connecting section can be rotatably installed on the hinge axis. As another specific implementation detail, Figure 1, the hinge 10 is a bent plate-like structure, and this plate-like structure can have a bending arc to adapt to the inner wall of the conical inner expansion cavity 3, and the bending part is hinged in the notch 502. As one of the specific implementation structures, the drive assembly includes a support platform 4, a drive column 7, and a moving block 8. The support platform 4 includes a column 401 coaxially located in the mounting tube 2, and a mounting plate 403 vertically connected to the column 401 as a whole, that is, the mounting plate 403 and the column 401 can be formed as one piece. The outer periphery of the connection between the support platform 4 and the column 401 has a threaded sleeve portion 402, and the threaded sleeve portion 402 is threadedly engaged with the external thread at the top of the mounting tube 2 to be fixed. At the end of the installation, the threaded sleeve and the mounting tube 2 are threadedly engaged to the extreme position to achieve a secure fixing effect. In addition, the column 401 is coaxially connected to the upper section of the drive column 7, and they are temporarily connected to each other as a whole by the push spring 13. It should be noted here that the purpose of this design is to connect the column 401 and the drive column 7 as a whole due to the elastic effect of the push spring 13. When the set torque value is reached between the two, they will rotate relative to each other, that is, they will be separated from the one-piece connection. Specifically, the lower section of the drive column 7 axially passes through the moving block 8 in the form of a threaded fit. The moving block 8 is installed in an axial sliding fit with the mounting hole. During operation, the support table 4 can be rotated to allow the drive column 7 to rotate and move downward. That is, the drive column 7 and the column 401 at this time become a whole due to the force of the push spring 13, and rotate synchronously until the drive column 7 contacts the bottom of the inner expansion cavity 3. At this time, the screw composed of the drive column 7 and the column 401 can no longer be screwed in. At this time, the screw-like structure composed of the drive column 7 and the column 401 rotates in place, causing the moving block 8 to move downward through the threaded pair to squeeze the now detached Figure 1 The hinge 10 in the initial position shown, that is, the hinge 10 at this time can be as shown in FIG. Figure 2 In the position shown, for example, if the hinge 10 is provided with a torsion spring for hinge connection, then the hinge 10 will be attached to the inner wall of the inner expansion cavity 3, or the hinge 10 is suspended below the above-mentioned notch 502. Because the moving block 8 moves downward through the threaded pair, the moving block 8 squeezes the hinge 10, so that a section of the hinge 10 is more firmly attached to the wall of the inner expansion cavity 3. Afterwards, when it is found that it is difficult to rotate the support platform 4, or when it is obvious that the support platform 4 is slipping due to relative rotation with respect to the driving column 7, the support platform 4 can be further squeezed axially and continued to rotate, so that the push spring 13 can be further compressed until it is as shown in FIG. Figure 3 As shown, the threaded sleeve portion 402 is fastened to the mounting tube 2 and the support platform 4 cannot be rotated any further, indicating that the support platform 4 has been firmly fixed to the mounting tube 2. Because a large torque is required to ensure that the support platform 4 cannot be rotated any further at this time, it can also be ensured that the support platform 4 is absolutely tightened.

[0034] Regarding the elastic integrated connection between the column 401 and the driving column 7, as shown in FIG. Figure 3 The bottom end of the column 401 has a stepped hole 12, within which a thrust spring 13 is axially mounted. The upper section of the thrust spring 13 is located at the bottom of the stepped hole 12, while the lower section extends out of the stepped hole 12, near the stepped surface at the bottom, and connects with the top end of the column 401. This prevents the thrust spring 13, which is always in a compressed state, from being overcompressed. To allow the column 401 and the drive column 7 to rotate relative to each other when necessary, a slide 16 is connected to the end of the lower section of the thrust spring 13. The top end of the column 401 is a circular table 701 that is larger than the rest of the column. For example, the lower portion of the circular table 701 is connected to a cylindrical section 702, and the free end of the circular table 701 is in contact with the end surface of the slide 16.

[0035] Continue reading Figure 3 The lower section of the driving column 7 includes a threaded rod section 703, which is threadedly connected to the moving block 8 and a fixed block 9 at the same time. The fixed block 9 is fixed in the mounting hole, and the lower end of the fixed block 9 is coaxially docked with the moving block 8. The two opposite sides of the moving block 8 each have a guide block 15, and the guide blocks 15 are slidably connected to the two guide grooves 501 arranged opposite to each other in the mounting hole. When the two guide blocks 15 are located in the two guide grooves 501, the threaded holes respectively provided by the moving block 8 and the fixed block 9 are docked with each other to form a splicing hole that allows the threaded rod section 703 to be threadedly connected at the same time, that is, the thread paths of the two threaded holes can be docked to form a continuous spiral line.

[0036] In order to prevent the moving block 8 from loosening, Figure 4 The movable block 8 and the fixed block 9 can be connected together by an elastic element 14. The elastic element 14 can be a cylindrical spring. The elastic element 14 firmly pulls the movable block 8 to a position in contact with the bottom end surface of the fixed block 9, so that when the bottom end of the driving column 7 does not contact the bottom of the inner expansion cavity 3, the movable block 8 and the fixed block 9 are not separated, that is, the movable block 8 and the fixed block 9 are a whole under normal conditions.

[0037] In this embodiment, in particular, the driving column 7 mentioned above further includes a supporting plate 11 at the bottom end. The supporting plate 11 is vertically fixed to the driving column 7, and in the initial state, the supporting plate 11 can be adjusted to the initial position by rotating the support platform 4, that is, Figure 1As shown, the bearing plate 11 squeezes the section of the hinge 10 located in the mounting hole until it contacts the bottom inner edge of the notch 502, so that the section of the hinge 10 located outside the mounting tube 2 is in a vertical state and remains fixed so that the hinge 10 does not affect the insertion of the mounting tube 2 into the mounting hole. When the column 401 and the drive column 7 of the support platform 4 are subsequently screwed in, the bearing plate 11 moves downward and the hinge 10 is released. Based on the above structure, an optimized design is that after the threaded sleeve portion 402 is screwed to the limit at the top of the support tube 5, the threaded sleeve portion 402 and the support tube 5 are screwed in with radially arranged locking screws to reinforce them. This ensures that the support platform 4 is not loosened, and the entire pile foundation can be firmly installed on the ground.

[0038] In the above description of the present invention, it should be noted that the terms "one side," "the other side," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0039] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic pile foundation based on a photovoltaic power station, comprising a base pre-buried in a concrete foundation, characterized by: A support tube (5) is inserted into the base, and the bottom end of the support tube (5) is inserted into the mounting hole of the base, and the bottom end of the mounting hole has an enlarged inner expansion cavity (3); a plurality of hinged parts (10) are hinged in a circular array at the bottom end of the support tube (5), and a drive assembly is coaxially installed in the support tube (5), and the drive assembly is fixedly connected to the support tube (5) in the form of threaded engagement, and in the process of rotating the drive assembly to achieve fixed connection, a section of all hinged parts (10) located outside the support tube (5) is synchronously turned toward the outside of the support tube (5), and is tightly attached to the cavity wall of the inner expansion cavity (3) and is fixedly connected to the support tube (5).

2. The photovoltaic pile foundation based on the photovoltaic power station according to claim 1, characterized in that: The base comprises a base (1) and a mounting tube (2) perpendicular to the center of the base (1); the mounting hole is a tube hole of the mounting tube (2); the inner expansion cavity (3) is arranged at the inner center of the base (1) and has a truncated cone structure; the inner expansion cavity (3) is coaxially connected to the mounting hole.

3. The photovoltaic pile foundation based on the photovoltaic power station according to claim 2, characterized in that: A positioning collar (6) is coaxially fixed on the support tube (5), and the positioning collar (6) is in contact with the top end surface of the mounting tube (2) so that the bottom end of the support tube (5) does not contact the bottom surface of the inner expansion cavity (3).

4. The photovoltaic pile foundation based on the photovoltaic power station according to claim 3, characterized in that: The bottom end of the mounting tube (2) has a plurality of notches (502), and the hinge (10) is hinged in each notch (502), and the hinge (10) is a bent plate-shaped structure, and the bent portion is hinged in the notch (502); the driving assembly comprises a support platform (4), a driving column (7), and a moving block (8); the support platform (4) comprises a column (401) coaxially located in the mounting tube (2) and a mounting plate (403) vertically connected to the column (401) as a whole; the support platform (4) and the column (401) are connected to each other. 1) The outer periphery of the connection part has a threaded sleeve part (402), and the threaded sleeve part (402) is fixed by threaded sleeve engagement with the external thread of the top end of the mounting tube (2). The column (401) is coaxially connected to the upper section of the driving column (7), and they are temporarily connected to each other as a whole through a push spring (13). The lower section of the driving column (7) axially passes through the moving block (8) in the form of threaded engagement. The moving block (8) is installed in an axial sliding engagement with the mounting hole, so that when the support platform (4) is rotated: The driving column (7) rotates and moves downward until the driving column (7) contacts the bottom of the inner expansion cavity (3). The moving block (8) moves downward through the threaded pair to squeeze the hinge (10), so that a section of the hinge (10) is tightly attached to the wall of the inner expansion cavity (3). Then, the support platform (4) is further axially squeezed and continues to rotate, so that the push spring (13) is further compressed until the threaded sleeve portion (402) is fastened to the mounting tube (2).

5. The photovoltaic pile foundation based on the photovoltaic power station according to claim 4, characterized in that: The bottom end of the column (401) has a stepped hole (12), and the push spring (13) is axially installed in the stepped hole (12). The upper section of the push spring (13) is located at the bottom of the stepped hole (12), and the lower section extends out of the stepped hole (12) and is connected to the top end of the column (401) after being close to the step surface at the bottom of the hole.

6. The photovoltaic pile foundation based on the photovoltaic power station according to claim 5, characterized in that: The end of the lower section of the push spring (13) is connected to a slide plate (16), and the top of the column (401) is a truncated cone (701) that is larger than the rest of the section, and the free end of the truncated cone (701) is in contact with the end surface of the slide plate (16).

7. The photovoltaic pile foundation based on the photovoltaic power station according to claim 4, characterized in that: The lower section of the driving column (7) comprises a threaded rod section (703), the threaded rod section (703) is simultaneously threadedly connected to the moving block (8) and a fixed block (9), the fixed block (9) is fixed in the mounting hole, the lower end of the fixed block (9) is coaxially docked with the moving block (8), the two opposite sides of the moving block (8) each have a guide block (15), the guide block (15) is slidably connected to two guide grooves (501) arranged oppositely in the mounting hole, and when the two guide blocks (15) are located in the two guide grooves (501), the threaded holes respectively provided by the moving block (8) and the fixed block (9) dock with each other to form a splicing hole that allows the threaded rod section (703) to be simultaneously threadedly connected.

8. The photovoltaic pile foundation based on the photovoltaic power station according to claim 7, characterized in that: The movable block (8) and the fixed block (9) are connected together via an elastic element (14), and the elastic element (14) firmly pulls the movable block (8) to a position where it fits in with the bottom end surface of the fixed block (9), so that when the bottom end of the driving column (7) does not contact the bottom of the inner expansion cavity (3), the movable block (8) and the fixed block (9) are not separated.

9. The photovoltaic pile foundation based on the photovoltaic power station according to claim 4, characterized in that: The driving column (7) further comprises a supporting plate (11) located at the bottom end, the supporting plate (11) being vertically fixed to the driving column (7), and in an initial state, the supporting plate (11) squeezes a section of the hinge (10) located in the mounting hole until it contacts the bottom inner edge of the notch (502), so that the section of the hinge (10) located outside the mounting tube (2) is in a vertical state at this time, so that the hinge (10) does not affect the insertion of the mounting tube (2) into the mounting hole.

10. The photovoltaic pile foundation based on the photovoltaic power station according to claim 4, characterized in that: After the threaded sleeve portion (402) is screwed to the limit on the top end of the support tube (5), the threaded sleeve portion (402) and the support tube (5) are screwed in and reinforced by radially arranged locking screws.

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