Adjustable screw pile and photovoltaic support

Abstract

The utility model discloses an adjustable spiral ground pile and photovoltaic support, solve the problem that the center position of standpipe deviates and cannot fall in the range of flange plate, and ensure long -term stable use after installation, the adjustable spiral ground pile includes the pile body that goes into the underground when installing and the flange plate of the standpipe connection of photovoltaic support, the pile body includes the pile tail, the upper portion of the pile tail is spaced apart and is distributed with at least two insertion slots along the circumference, the bottom of the flange plate is spaced apart and is distributed with at least two stiffening ribs along the circumference, and stiffening rib corresponds and inserts insertion slot, the center of the flange plate is equipped with fixed bolt hole, and the fixed bolt hole is equipped with fixed bolt between standpipe, the flange plate includes the first flange plate and the second flange plate of replaceable installation, the first flange plate connects the pile tail and standpipe when the center of standpipe and the center of flange plate are consistent, and the second flange plate connects the pile tail and standpipe when the center of standpipe and the center of flange plate produce deviation.

Description

[Technical Field]

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to spiral steel piles for photovoltaic supports. [Background Technology]

[0002] As an important component of the photovoltaic power generation industry, residential photovoltaic (PV) power generation has significant market demand and broad development prospects. However, due to the low level of professionalism and uneven skill levels among construction teams for residential PV power stations, significant deviations can occur between the location of the helical piles and the center of the column and the design drawings during actual power station construction. In some cases, the column may even deviate from the helical pile range. On-site solutions include welding square steel pipes to the lower part of the flange plate, adding new helical piles, and encasing the pile head with a concrete foundation. However, these methods are not always safe, involve complex reinforcement methods, and prolong the construction period.

[0003] Chinese invention patent CN102270680A discloses an adjustable eccentric helical ground pile for column installation, suitable as a support system for ground-mounted photovoltaic systems in various geological environments. It includes a helical ground pile anchor, a large rubber washer, a small rubber washer, and a steel ring. The top of the helical ground pile anchor has a circular tray. Both the large and small rubber washers are open eccentric rings, and the steel ring is an open circular ring. The large rubber washer is placed in the tray at the top of the helical ground pile anchor, the small rubber washer is placed inside the large rubber washer, and the steel ring is fitted around the outer circumference of the large rubber washer. Bolts are used to connect and lock the steel ring to the helical ground pile anchor. The use of the large and small rubber washers together can solve the problem of column eccentricity during installation and improve the assembly effect of the helical ground pile. However, it is difficult to guarantee long-term stable use after installation. [Utility Model Content]

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an adjustable spiral ground pile and photovoltaic support, which solves the problem that the center position of the column cannot fall within the flange plate range due to offset, and ensures long-term stable use after installation.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] First, an adjustable helical ground pile is provided, comprising a pile body that penetrates the ground during installation and a flange plate that connects to the column of a photovoltaic support. The pile body includes a pile tail, and at least two slots are distributed circumferentially at intervals on the upper part of the pile tail. At least two stiffening ribs are distributed circumferentially at intervals on the bottom of the flange plate, and the stiffening ribs are inserted into the slots. A fixing bolt hole is provided at the center of the flange plate, and a fixing bolt is provided between the fixing bolt hole and the column.

[0007] The flange plate includes a replaceable first flange plate and a second flange plate. The first flange plate is a circular plate with equally long stiffening ribs evenly distributed along the circumference. The second flange plate is circular in body and has an extended portion on one radial side. The second flange plate has an extended stiffening rib on the side corresponding to the extended portion. When the center of the column and the center of the flange plate are aligned, the first flange plate connects the pile tail to the column. When the center of the column and the center of the flange plate are offset, the second flange plate connects the pile tail to the column. The extended portion is located on the side offset from the center of the column.

[0008] Preferably, the flange plate and the stiffening rib are both steel plates and are welded together as one piece.

[0009] Preferably, the extended portion is an arc-shaped structure that protrudes radially outward from the main body of the second flange plate.

[0010] Preferably, the extended stiffening rib is a right-angled trapezoidal structure.

[0011] Preferably, the pile body further includes a helical pile head with helical blades and an intermediate pile body, wherein the pile tail is connected to the upper end of the intermediate pile body.

[0012] Preferably, the spiral pile head, the middle section of the pile body, and the pile tail are separately configured and fixed together as a whole by pile body connectors.

[0013] Preferably, the two ends of the middle section of the pile body, the upper end of the spiral pile head, and the lower end of the pile tail are all provided with external threads, and the pile body connector is provided with internal threads, with the external threads screwed into the internal threads.

[0014] Preferably, radial threaded holes are provided at both ends of the intermediate pile body, the upper end of the spiral pile head, and the lower end of the pile tail. Radial fixing holes are provided on the pile body connector, and radial locking screws are connected to the radial threaded holes and the radial fixing holes.

[0015] Preferably, a cross-shaped support rib is provided on the inner side of the top of the pile tail, and the fixing bolt hole is located at the cross intersection of the cross-shaped support rib.

[0016] Additionally, a photovoltaic support structure is provided, including the aforementioned helical ground pile.

[0017] The present invention adopts the above technical solution and has the following beneficial effects:

[0018] 1. The first and second flange plates are interchangeable depending on whether there is a misalignment between the column center and the flange plate center. The first flange plate connects the pile tail to the column when the column center and the flange plate center are aligned; the second flange plate connects the pile tail to the column when there is a misalignment between the column center and the flange plate center. The second flange plate is specifically designed to address column center misalignment. The main body of the second flange plate is circular with an extended section on one radial side. Corresponding to the extended section, the second flange plate has extended stiffening ribs. On one hand, the extended section ensures that even if the column center position is misaligned, the column can still be supported at a relatively central position within the range of the second flange plate. On the other hand, the extended stiffening ribs ensure the structural stability of the side of the second flange plate corresponding to the extended section, thus providing stable support for the column. Therefore, by assembling flange plates of different sizes and stiffening ribs, the problem of the column center position not falling within the flange plate range is solved, ensuring long-term stable use after installation.

[0019] Because the flange plate has stiffening ribs at the bottom that insert into slots at the top of the pile tail, when the flange plate and pile tail are assembled, the stiffening ribs and slots are aligned vertically. Then, the flange plate moves downwards so that the stiffening ribs are inserted into the slots. Finally, the flange plate is fixed to the column using bolts. This facilitates quick connection and assembly of the flange plate and pile tail, and also helps ensure that the extended section is always located on one side of the offset position from the center of the column.

[0020] The fixing bolts pass through the fixing bolt holes in the center of the flange plate and the fixing holes at the bottom of the column from bottom to top. Nuts are then connected above the fixing holes for easy bolt fixing.

[0021] 2. Both the flange plate and the stiffening rib are made of steel plates and are welded together to form a solid whole with high structural strength.

[0022] 3. The pile body includes a pile tail, a helical pile head with helical blades, and a middle pile body section. The pile tail is connected to the upper end of the middle pile body section. The helical pile head, middle pile body section, and pile tail are separately arranged but fixed together by pile body connectors. The lengths of the helical pile head and pile tail can be fixed, while the middle pile body section can be provided with various length specifications. The appropriate length of the middle pile body section can be selected as needed. The length of the helical pile can be combined arbitrarily, reducing inventory backlog during on-site assembly and simplifying packaging and transportation, thus reducing transportation difficulties.

[0023] 4. Since the helical pile head, the middle section of the pile body and the pile tail are connected to the pile body with external threads, it is convenient to assemble the helical pile head, the middle section of the pile body and the pile tail. In addition, radial locking screws are used to lock and prevent the threads from coming loose.

[0024] 5. A cross-shaped support rib is provided on the inner side of the top of the pile tail. The cross-shaped support rib has a central fixing hole at the intersection for connection with fixing bolts. The cross-shaped support rib enhances the structural strength of the pile tail, and the connection with the fixing bolts allows the pile tail, flange plate, and column to be fixed together as a whole, enhancing structural stability.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0026] The utility model will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the structure of an adjustable spiral ground pile according to the present invention;

[0028] Figure 2 A schematic diagram showing the connection between the helical pile head and the intermediate pile body via pile body connectors;

[0029] Figure 3 This is a schematic diagram of the pile tail structure;

[0030] Figure 4 This is a schematic diagram of the connection structure between the pile tail and the flange plate;

[0031] Figure 5 This is a top view of the second flange plate;

[0032] Reference numerals: 1. Pile body, 11. Spiral pile head, 12. Middle section of pile body, 13. Pile tail, 131. Slot, 132. Cross-shaped support rib, 133. Central fixing hole, 14. Pile body connector, 141. Internal thread, 142. Radial fixing hole, 15. Radial locking screw, 16. External thread, 17. Radial threaded hole, 2. Flange plate, 201. Extension, 202. Fixing bolt hole, 21. Equal length stiffening rib, 22. Column, 3. Fixing bolt, 4.

Detailed Implementation Methods

[0033] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0034] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0035] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "inner," and "outer," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Reference Figures 1 to 5 As shown, this embodiment provides an adjustable helical ground pile as a photovoltaic support foundation, which improves upon existing helical steel piles. It includes a pile body 1 that penetrates the ground during installation and a flange plate 2 that connects to the column 3 of the photovoltaic support. The pile body 1 includes a pile tail 13, and at least two slots 131 are distributed circumferentially at intervals on the upper part of the pile tail. At least two stiffening ribs are distributed circumferentially at intervals on the bottom of the flange plate 2, and the stiffening ribs are inserted into the slots 131 respectively. A fixing bolt hole 202 is provided in the center of the flange plate 2, and a fixing bolt 4 is provided between the fixing bolt hole 202 and the column 3. Fixing holes for connecting to the fixing bolt 4 are opened at the bottom of the column foot.

[0040] The flange plate 2 includes a first flange plate and a second flange plate, which are interchangeable depending on whether there is an offset between the center of the column and the center of the flange plate. Furthermore, the first and second flange plates have different structures. The first flange plate is a circular plate with equally long stiffening ribs 21 evenly distributed along its circumference. The second flange plate is mainly circular with an extended portion 201 on one radial side, and an extended stiffening rib 22 is provided on the side corresponding to the extended portion, while the remaining ribs are of equal length. Of course, the circular plate can also be a near-circular plate. Figure 4 As shown, the upper part of the pile tail 13 has four slots 131 evenly distributed circumferentially, and the bottom of the flange plate has four stiffening ribs evenly distributed circumferentially. For the first flange plate, all four stiffening ribs are equal-length stiffening ribs 21, while for the second flange plate, one of the four stiffening ribs is an extended stiffening rib 22, and the other three are equal-length stiffening ribs 21. The first flange plate connects the pile tail to the column when the center of the column and the center of the flange plate are aligned. When there is an eccentricity problem in the column installation, the second flange plate connects the pile tail to the column when the center of the column and the center of the flange plate are offset, and the extended part is located on the side offset from the center of the column.

[0041] In this embodiment, the first flange plate connects the pile tail to the column when the center of the column aligns with the center of the flange plate; the second flange plate connects the pile tail to the column when the center of the column deviates from the center of the flange plate. The second flange plate is specifically designed to address the deviation of the column's center position. Specifically, the main body of the second flange plate is circular with an extended section on one radial side. Corresponding to the extended section, the second flange plate has extended stiffening ribs. On one hand, the extended section ensures that even if the column's center position deviates, the column can still be supported at a relatively central position within the range of the second flange plate. On the other hand, the extended stiffening ribs ensure the structural stability of the side of the second flange plate corresponding to the extended section, thus providing stable support for the column. Therefore, by assembling flange plates of different sizes and stiffening ribs, the problem of the column's center position deviating from the flange plate's range is solved, ensuring long-term stable use after installation.

[0042] Because the flange plate has stiffening ribs at the bottom that insert into slots at the top of the pile tail, when the flange plate and pile tail are assembled, the stiffening ribs align vertically with the slots. Then, the flange plate moves downwards to allow the stiffening ribs to insert into the slots, and finally, the flange plate is secured to the column using bolts. This facilitates quick connection and assembly of the flange plate and pile tail, and also helps ensure that the extended section remains on the offset side of the column center. The bolts pass through the bolt holes in the center of the flange plate and the fixing holes at the bottom of the column from bottom to top, and nuts are connected above the fixing holes for easy bolt fixing.

[0043] Specifically, both the flange plate and the stiffening rib are steel plates and are welded together as a single unit, forming a robust whole with high structural strength. The slot 131 has a T-shaped cross-section, and the stiffening rib has a T-shaped portion that inserts into the slot 131. Specifically, a steel plate can be welded to the outside of the pile tail to form the slot.

[0044] like Figure 5 As shown, the extended portion 201 is an arc-shaped structure protruding radially outward from the main body of the second flange plate. The extended stiffening rib is a right-angled trapezoidal structure, and the equal-length stiffening rib is an isosceles trapezoidal structure. Therefore, the corners where it connects with the pile tail and the flange plate form triangular notches.

[0045] like Figure 1 As shown, the pile body can be divided into three sections from head to tail. The pile body 1 includes a spiral pile head 11 with spiral blades and a middle pile body 12. The pile tail is connected to the upper end of the middle pile body.

[0046] In some embodiments, the helical pile head 11, the intermediate pile body 12, and the pile tail 13 are separately arranged and fixed together by a pile body connector 14. Specifically, both ends of the intermediate pile body, the upper end of the helical pile head, and the lower end of the pile tail are provided with external threads 16, and the pile body connector is provided with internal threads 141, with the external threads screwed into the internal threads. Both ends of the intermediate pile body, the upper end of the helical pile head, and the lower end of the pile tail are provided with radial threaded holes 17, and the pile body connector is provided with radial fixing holes 142. Radial locking screws 15 are connected to the radial threaded holes and the radial fixing holes. The lengths of the helical pile head and the pile tail can be fixed, while the intermediate pile body can be provided with various length specifications. The corresponding length of the intermediate pile body can be selected as needed, and the length of the helical pile can be combined arbitrarily. On-site assembly reduces inventory backlog, facilitates packaging and transportation, and reduces transportation difficulties. Because the helical pile head, the middle section of the pile body, and the pile tail are connected to the pile body with external threads, it is convenient to assemble the helical pile head, the middle section of the pile body, and the pile tail. In addition, radial locking screws are used for locking to prevent the threads from coming loose.

[0047] Furthermore, a cross-shaped support rib plate 132 is provided on the inner side of the top of the pile tail. A central fixing hole 133 is provided at the intersection of the cross-shaped support rib plate for connection with the fixing bolt 4. The cross-shaped support rib plate enhances the structural strength of the pile tail, and the connection with the fixing bolt allows the pile tail, flange plate and column to be fixed together as a whole by the fixing bolt, thereby enhancing structural stability.

[0048] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. An adjustable helical ground pile, comprising a pile body inserted into the ground during installation and a flange plate connected to the column of a photovoltaic support, characterized in that, The pile body includes a pile tail, and at least two slots are distributed circumferentially at intervals on the upper part of the pile tail. At least two stiffening ribs are distributed circumferentially at intervals on the bottom of the flange plate, and the stiffening ribs are inserted into the slots accordingly. The flange plate has a fixing bolt hole at its center, and a fixing bolt is provided between the fixing bolt hole and the column. The flange plate includes a replaceable first flange plate and a second flange plate. The first flange plate is a circular plate with equally long stiffening ribs evenly distributed along the circumference. The second flange plate is circular in body and has an extended portion on one radial side. The second flange plate has an extended stiffening rib on the side corresponding to the extended portion. When the center of the column and the center of the flange plate are aligned, the first flange plate connects the pile tail to the column. When the center of the column and the center of the flange plate are offset, the second flange plate connects the pile tail to the column. The extended portion is located on the side offset from the center of the column.

2. An adjustable helical ground pile according to claim 1, characterized in that, The flange plate and stiffening ribs are both steel plates and are welded together as one unit.

3. An adjustable helical ground pile according to claim 1, characterized in that, The extended portion is an arc-shaped structure that protrudes radially outward from the main body of the second flange plate.

4. An adjustable helical ground pile according to claim 1, characterized in that, The extended stiffening ribs are right-angled trapezoidal structures.

5. An adjustable helical ground pile according to claim 1, characterized in that, The pile body also includes a helical pile head with helical blades and an intermediate pile body, with the pile tail connected to the upper end of the intermediate pile body.

6. An adjustable helical ground pile according to claim 5, characterized in that, The spiral pile head, the middle section of the pile body, and the pile tail are set separately, but are fixed together as one unit by the pile body connector.

7. An adjustable helical ground pile according to claim 6, characterized in that, The two ends of the middle section of the pile body, the upper end of the spiral pile head, and the lower end of the pile tail are all provided with external threads, and the pile body connector is provided with internal threads, with the external threads screwed into the internal threads.

8. An adjustable helical ground pile according to claim 7, characterized in that, The two ends of the middle section of the pile body, the upper end of the spiral pile head, and the lower end of the pile tail are provided with radial threaded holes. The pile body connector is provided with radial fixing holes, and the radial threaded holes and the radial fixing holes are connected with radial locking screws.

9. An adjustable helical ground pile according to claim 1, characterized in that, The top inner side of the pile tail is provided with a cross-shaped support rib plate, and the cross-shaped support rib plate is provided with a central fixing hole at the intersection of the cross.

10. A photovoltaic support structure, characterized in that, Includes the helical ground pile as described in any one of claims 1 to 9.

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