Photovoltaic support screw pile foundation structure

Abstract

The invention provides a photovoltaic support spiral pile foundation structure. The photovoltaic support spiral pile foundation structure comprises a spiral pipe pile with an anchoring hole, an anchor rod and a driving assembly capable of being placed in the spiral pipe pile. Wherein the driving assembly can drive the anchor rod to move between a first relative position and a second relative position relative to the spiral pipe pile, in the first relative position, the anchor rod extends out of the spiral pipe pile through the anchoring hole so as to enhance the foundation bearing capacity, and in the second relative position, the anchor rod is located in the spiral pipe pile so that the spiral pipe pile can be reversely pulled out. According to the technical scheme, the relative positions of the anchor rod and the spiral pipe pile are adjusted through the driving assembly, when the foundation needs to bear the photovoltaic support, the anchor rod extends out of the spiral pipe pile to enhance the bearing capacity, and when the foundation needs to be recycled, the anchor rod is recycled into the spiral pipe pile to be conveniently reversely pulled out; it is guaranteed that the foundation meets the bearing requirement in the poor geological environment, and meanwhile the recoverability is achieved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of photovoltaic support foundations, and in particular to a photovoltaic support spiral pile foundation structure. Background Art

[0002] As a basic form widely used in the photovoltaic field, spiral piles have the advantages of fast construction speed, small environmental disturbance and strong adaptability. When the photovoltaic panels reach their design life, the spiral piles can be reversed and pulled out to achieve material recycling and reuse. Their fast construction, low maintenance cost and recyclability give them good application prospects.

[0003] In the face of some geological environments with poor bearing capacity, spiral piles can also be flexibly modified to meet the bearing capacity requirements of photovoltaic brackets. For example, patent document CN 221741342 U discloses a photovoltaic bracket pile foundation for powdery soil. In order to improve the bearing capacity of the pile foundation in powdery soil, a fixed component that can extend out of the pile foundation body is set. After the pile foundation body is inserted, the fixed component is anchored into the soil, further enhancing the stability of the foundation. However, after the fixed component of this structure is anchored into the soil, the spiral pile is difficult to reverse and pull out, and is no longer recyclable. The long-term use cost is greatly increased, and it is not suitable for promotion and use. Summary of the invention

[0004] A technical problem to be solved by the present disclosure is: how to make the screw piles meet the bearing capacity in a poor geological environment and at the same time have recyclability.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a photovoltaic support spiral pile foundation structure, including a spiral pipe pile with an anchor hole, an anchor rod and a driving assembly that can be placed inside the spiral pipe pile; wherein the driving assembly can drive the anchor rod to move between a first relative position and a second relative position relative to the spiral pipe pile, in the first relative position, the anchor rod extends out of the spiral pipe pile through the anchor hole to strengthen the bearing capacity of the foundation, and in the second relative position, the anchor rod is located inside the spiral pipe pile, so that the spiral pipe pile can be reversed and pulled out.

[0006] In some embodiments, the spiral pipe pile includes a steel pipe pile and a plurality of spiral blades disposed on the steel pipe pile, and an anchor hole is disposed on the pipe wall of the steel pipe pile.

[0007] In some embodiments, the driving assembly includes a rod member that can be inserted into the steel pipe pile, and a telescopic member is provided on the rod member, and the telescopic member is used to drive the anchor rod to move between a first relative position and a second relative position relative to the spiral pipe pile.

[0008] In some embodiments, an accommodating cavity is provided on the outer circumferential surface of the rod, and the first end of the telescopic member is disposed in the accommodating cavity. The telescopic member can drive the anchor rod to move into the accommodating cavity to reach the second relative position.

[0009] In some embodiments, a first connecting block is provided at the second end of the telescopic member, and a second connecting block is provided at the first end of the anchor rod. The first connecting block and the second connecting block are detachably connected along the insertion direction of the rod; in the first relative position, the first connecting block and the second connecting block are located outside the accommodating cavity.

[0010] In some embodiments, the photovoltaic support spiral pile foundation structure further includes a limit block that can be placed inside the steel pipe pile, and the second connecting block abuts against the limit block to maintain the first relative position between the spiral pipe pile and the anchor rod.

[0011] In some embodiments, the size of the second connection block is larger than the size of the anchor hole.

[0012] In some embodiments, a mounting hole is provided on the upper portion of the steel pipe pile, and a positioning hole capable of cooperating with the mounting hole is provided on the rod.

[0013] In some embodiments, the second end of the anchor rod is provided with an insert portion.

[0014] In some embodiments, a plurality of anchor holes are provided on the pipe wall of the steel pipe pile, and the plurality of anchor holes are dispersedly arranged around the spiral blade along different heights.

[0015] Through the above technical scheme, the photovoltaic bracket spiral pile foundation structure provided by the present invention uses a driving assembly to adjust the relative positions of the anchor rod and the spiral pipe pile. When the foundation is needed to support the photovoltaic bracket, the anchor rod is extended out of the spiral pipe pile to enhance the bearing capacity. When the foundation needs to be recovered, the anchor rod is recovered into the spiral pipe pile for easy reversal and extraction, thereby ensuring that the foundation meets the bearing requirements in a poor geological environment while also being recyclable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a schematic diagram of the structure of the anchor rod extending out of the spiral pipe pile disclosed in the embodiment of the present disclosure; Figure 2 It is a schematic diagram of the structure of the spiral pipe pile disclosed in the embodiment of the present disclosure; Figure 3 The partial cross-section diagram of the anchor rod extending out of the spiral pipe pile disclosed in the embodiment of the present disclosure is shown in FIG. Figure 1 ; Figure 4 The partial cross-section diagram of the anchor rod extending out of the spiral pipe pile disclosed in the embodiment of the present disclosure is shown in FIG. Figure 2; Figure 5 is a schematic diagram of the structure of the anchor rod disclosed in the embodiment of the present disclosure; Figure 6 is a structural schematic diagram of the telescopic member and the first connecting block disclosed in an embodiment of the present disclosure; Figure 7 It is a partial structural schematic diagram of a spiral pipe pile and a driving assembly disclosed in an embodiment of the present disclosure; Figure 8 It is a schematic diagram of the partial structure of the spiral pipe pile and the photovoltaic support disclosed in the embodiment of the present disclosure.

[0018] Description of reference numerals: 1. Spiral pipe pile; 101. Anchor hole; 102. Steel pipe pile; 103. Spiral blade; 104. Mounting hole; 105; Sealing rubber ring; 106. Through bolt; 107. Reinforcement plate; 108. Locking nut; 2. Drive assembly; 201. Rod; 202. Telescopic member; 203. First connecting block; 204. Accommodating cavity; 3. Anchor rod; 301. Second connecting block; 302. Insertion part; 4. Limit block; 5. Photovoltaic bracket; 6. Ground. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0020] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0021] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0023] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0024] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0026] like Figures 1 to 8 As shown, the present disclosure provides a photovoltaic support spiral pile foundation structure, including a spiral pipe pile 1 with an anchor hole 101, an anchor rod 3 and a driving assembly 2 that can be placed inside the spiral pipe pile 1; wherein the driving assembly 2 can drive the anchor rod 3 to move between a first relative position and a second relative position relative to the spiral pipe pile 1. In the first relative position, the anchor rod 3 extends out of the spiral pipe pile 1 through the anchor hole 101 to strengthen the foundation bearing capacity. In the second relative position, the anchor rod 3 is located inside the spiral pipe pile 1, so that the spiral pipe pile 1 can be reversed and pulled out.

[0027] Specifically, in the early stage of construction of the photovoltaic support spiral pile foundation structure disclosed in the present invention, the spiral pipe pile 1 is first screwed into the ground for initial anchoring. After ensuring that the position size and horizontal height of the spiral pipe pile 1 after being screwed in are within the required dimensional tolerance range, the drive assembly 2 is then placed inside the spiral pipe pile 1, and the anchor rod 3 is driven to reach the first relative position, that is, the anchor rod 3 extends out of the pipe wall of the spiral pipe pile 1 and is anchored in the soil to achieve secondary anchoring. The bearing capacity of the foundation is strengthened, so that it can adapt to poor geological environments. After the anchoring is completed, the drive assembly 2 is taken out. Among them, the anchor rod 3 to be anchored in the soil can be placed in the spiral pipe pile 1 before the spiral pipe pile 1 is screwed in, or it can be placed inside the spiral pipe pile 1 together with the drive assembly 2 after the spiral pipe pile 1 is screwed in. In the later recycling stage of the spiral pile foundation structure of the photovoltaic support, when the photovoltaic power station reaches its service life or cannot be used any longer due to other reasons and the spiral pipe pile 1 needs to be recycled, the driving assembly 2 is placed inside the spiral pipe pile 1, and the anchor rod 3 is driven to reach the second relative position, that is, the anchor rod 3 is recovered to the inside of the spiral pipe pile 1, and the anchoring is released. At this time, the spiral pipe pile 1 can be smoothly reversed and pulled out to facilitate the recycling of materials.

[0028] At the same time, since the spiral pipe piles 1 and the anchor rods 3 are both prefabricated in the factory, the extension length and extension position of the anchor rods 3 are fixed values, and the driving assembly 2 can adjust the relative positions of multiple groups of spiral pipe piles 1 and anchor rods 3 in turn. In the early stage of construction, the construction method of flow operation is adopted. The first group of construction workers screw multiple spiral pipe piles 1 into the ground in turn, and the second group of construction workers use the driving assembly 2 to drive the anchor rods 3 inside the spiral pipe piles 1 to the first relative position, and perform secondary anchoring on the multiple spiral pipe piles 1 after screwing in one by one; during the later recovery, the construction method of flow operation is also adopted. The first group of construction workers use the driving assembly 2 to drive the anchor rods 3 anchored in the soil on the spiral pipe piles 1 to the second relative position, and release the anchoring of multiple spiral pipe piles 1 in turn. The second group of construction workers then reverse and pull out the multiple spiral pipe piles 1 in turn. The above construction process not only reduces equipment costs, but also shortens the construction period.

[0029] like Figure 1 and Figure 2 As shown, in some embodiments, the spiral pipe pile 1 includes a steel pipe pile 102 and a plurality of spiral blades 103 disposed on the steel pipe pile 102 , and an anchor hole 101 is disposed on the pipe wall of the steel pipe pile 102 .

[0030] In actual production, the steel pipe pile 102 with the anchor hole 101 and the spiral blade 103 are produced separately, and then the spiral blade 103 is welded to the outer periphery of the steel pipe pile 102 to form the spiral pipe pile 1. Among them, the parameters such as the inclination angle of the spiral blade 103 relative to the steel pipe pile 102 and the anchoring projection area should be adaptively adjusted according to the requirements of the vertical, pull-out and horizontal bearing capacity of the spiral pipe pile 1 and the soil conditions of different construction sites. After the relevant parameters are determined, the spiral blade 103 and the steel pipe pile 102 should be welded by factory standardized welding to avoid uneven foundation quality due to different technical levels and construction processes of construction personnel in the subsequent construction process.

[0031] like Figure 3 and Figure 7 As shown, in some embodiments, the driving assembly 2 includes a rod 201 that can be inserted into the steel pipe pile 102. The rod 201 is provided with a telescopic member 202, which is used to drive the anchor rod 3 to move between a first relative position and a second relative position relative to the spiral pipe pile 1.

[0032] Specifically, one end of the telescopic member 202 is connected to the rod 201, and the other end can be connected to the anchor rod 3. When the spiral pipe pile 1 is screwed into the ground, the rod 201 is used to insert into the steel pipe pile 102 along its length direction. The telescopic direction of the telescopic member 202 intersects with the length direction of the rod 201 itself, so as to drive the anchor rod 3 to extend to the outside of the spiral pipe pile 1. Here, the telescopic direction of the telescopic member 202 can be perpendicular to the length direction of the steel pipe pile 102, or it can form an angle of other angles with the length direction of the steel pipe pile 102, so that the anchor rod 3 can be inserted into the soil at an angle. For example Figure 3 As shown in , the anchor rod 3 is inserted obliquely so that it is arranged on both sides of the steel pipe pile 102 in an approximately symmetrical manner with the spiral blade 103 in the cross section, forming a cross-like intersection on the steel pipe pile 102 to enhance the overall anchoring effect of the spiral pipe pile 1.

[0033] In addition, a control switch capable of controlling the extension and retraction of the telescopic member 202 is provided at the top of the rod 201. When the relative positions of the spiral pipe pile 1 and the anchor rod 3 need to be adjusted, the construction personnel insert the rod 201 with the telescopic member 202 into the interior of the steel pipe pile 102, connect one end of the telescopic member 202 to the anchor rod 3, and adjust the extension and retraction of the telescopic member 202 through the control switch at the top of the rod 201, so that the anchor rod 3 can be driven to move between the first relative position and the second relative position. Usually, since the construction of the pile foundation does not require high telescopic accuracy and speed of the telescopic member 202, the telescopic member 202 preferably adopts a low-cost electric push rod. In other embodiments, a driving device such as an electric cylinder or a hydraulic cylinder can also be used according to actual construction needs.

[0034] like Figure 3As shown, in some embodiments, a receiving cavity 204 is provided on the outer circumferential surface of the rod 201, and the first end of the telescopic member 202 is disposed in the receiving cavity 204. The telescopic member 202 can drive the anchor rod 3 to move into the receiving cavity 204 to reach the second relative position.

[0035] Specifically, in the early construction stage of the photovoltaic support spiral pile foundation structure, before the drive assembly 2 is inserted into the spiral pipe pile 1, the anchor rod 3 is connected to the end of the telescopic member 202, and the telescopic member 202 is retracted so that the anchor rod 3 is placed in the accommodating chamber 204 of the drive assembly 2. After the spiral pipe pile 1 is screwed in, the construction personnel insert the rod 201 with the anchor rod 3 into the steel pipe pile 102, and then control the telescopic member 202 through the control switch at the top of the rod 201 to push the anchor rod 3 out of the anchor hole 101 to complete the secondary anchoring. In the later recovery stage of the photovoltaic support spiral pile foundation structure, the construction personnel insert the rod 201 into the steel pipe pile 102, and use the telescopic member 202 to recover the anchor rod 3 into the accommodating chamber 204 and take it out to release the anchoring. By providing a receiving cavity 204 capable of accommodating the anchor rod 3 on the rod member 201, the anchor rod 3 can be placed in the steel pipe pile 102 after the screwing-in operation of the spiral pipe pile 1 is completed, thereby avoiding the situation where the anchor rod 3 is pre-placed in the spiral pipe pile 1 and the vibration during the screwing-in operation causes the anchor rod 3 to be misaligned, thereby improving the construction reliability of the secondary anchoring operation.

[0036] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, a first connecting block 203 is provided at the second end of the telescopic member 202, and a second connecting block 301 is provided at the first end of the anchor rod 3. The first connecting block 203 and the second connecting block 301 are detachably connected along the insertion direction of the rod member 201; in the first relative position, the first connecting block 203 and the second connecting block 301 are located outside the accommodating cavity 204.

[0037] Specifically, taking the spiral pipe pile 1 vertically screwed into the ground as an example, the first connection block 203 has an insert or slot along the vertical direction, and the second connection block 301 has a slot or insert that matches the first connection block 203 along the vertical direction. In the early stage of construction of the photovoltaic support spiral pile foundation structure, after the telescopic member 202 drives the anchor rod 3 to move to the first relative position, the anchor rod 3 is anchored into the soil through the anchor hole 101, and the construction personnel pull out the rod 201 upward. At this time, the anchor rod 3 cannot move in the vertical direction due to the anchoring effect of the soil layer. The first connection block 203 and the second connection block 301 can be slid and separated in the vertical direction, and because the second connection block 301 is located outside the accommodating cavity 204, the upward movement of the rod 201 will not cause disturbance to the anchor rod 3. When there are multiple anchor rods 3 distributed along the height direction on the steel pipe pile 102, the multiple anchor rods 3 can be moved in batches from bottom to top. Anchoring operation method; in the later recovery stage of the photovoltaic support spiral pile foundation structure, the construction personnel control the extension of the telescopic member 202 to make the first connecting block 203 extend out of the accommodating cavity 204 and reach a position where it can be slidably connected with the second connecting block 301, and then insert the rod 201 downward. The first connecting block 203 and the second connecting block 301 are slidably inserted and connected in the vertical direction, and the anchor rod 3 is recovered to the inside of the accommodating cavity 204 through the telescopic member 202 to release the anchoring of the anchor rod 3. When there are multiple anchor rods 3 distributed along the height direction on the steel pipe pile 102, an operation method of releasing the anchoring of the multiple anchor rods 3 in batches from top to bottom can be adopted.

[0038] In some embodiments, a magnetic sheet is provided at the connection of the first connecting block 203 and / or the second connecting block 301 or an interference fit is achieved between the plug-in blocks and the slots of the two to prevent the anchor rod 3 from sliding off the telescopic member 202 during the movement of the rod 201 .

[0039] like Figure 4 As shown, in some embodiments, the photovoltaic support spiral pile foundation structure also includes a limit block 4 that can be placed inside the steel pipe pile 102, and the second connecting block 301 abuts against the limit block 4 to maintain the first relative position between the spiral pipe pile 1 and the anchor rod 3.

[0040] Specifically, after the anchor rod 3 is anchored, in order to prevent the anchor rod 3 from being squeezed back into the steel pipe pile 102 under the action of soil pressure, a stopper block 4 is placed in the steel pipe pile 102. The size of the stopper block 4 is set according to the inner diameter of the steel pipe pile 102 and the size of the second connection block 301, so that after the anchor rod 3 reaches the first relative position, the second connection block 301 at one end thereof can abut against the surface of the stopper block 4. When the spiral pipe pile 1 needs to be recovered, the stopper block 4 is taken out from the steel pipe pile 102 so that the drive assembly 2 can be inserted into the steel pipe pile 102. In order to save construction costs and facilitate large-scale construction, the stopper block 4 here is preferably a plain concrete column that can be prefabricated in batches.

[0041] like Figure 3 and Figure 4 As shown, in some embodiments, the size of the second connection block 301 is larger than the size of the anchor hole 101 .

[0042] Specifically, when reaching the first relative position, the anchor rod 3 is attached to the inner wall of the steel pipe pile 102 through the second connecting block 301 to avoid extending out of the spiral pipe pile 1. At the same time, the anchor rod 3, with the cooperation of the second connecting block 301 and the limit block 4, can be tightly attached to the inner wall of the steel pipe pile 102, so that the anchor rod 3 and the steel pipe pile 102 form a tightly connected whole that is subjected to common force, thereby achieving a better anchoring effect. like Figure 7 and Figure 8 As shown, in some embodiments, a mounting hole 104 is provided on the upper portion of the steel pipe pile 102 , and a positioning hole capable of cooperating with the mounting hole 104 is provided on the rod 201 .

[0043] The upper part of the steel pipe pile 102 is provided with a mounting hole 104 for mounting the photovoltaic bracket 5, and the mounting hole 104 can be used to assist in positioning the secondary anchoring and unanchoring operation process. Specifically, taking the spiral pipe pile 1 vertically screwed into the ground as an example, when the position of the anchor rod 3 is adjusted using the driving assembly 2, it is necessary to move the rod 201 in the vertical direction so that the first connecting block 203 and the second connecting block 301 are connected to each other. Since the spiral pipe piles 1 are all prefabricated in the factory, the anchor holes 101 on the multiple steel pipe piles 102 are distributed in the same position, and a positioning hole is opened at a designated position on the upper part of the rod 201, so that when the first connecting block 203 and the second connecting block 301 are connected to each other, the positioning hole and the mounting hole 104 coincide. At this time, insert the through bolt 106 into the mounting hole 104 and the positioning hole to temporarily fix the rod 201, and then perform the secondary anchoring or unanchoring operation. When a plurality of anchor holes 101 are provided on the wall surface of the steel pipe pile 102 along the height direction, a plurality of positioning holes cooperating with the mounting holes 104 are correspondingly provided on the rod body of the rod member 201 .

[0044] like Figure 8 As shown, in some embodiments, after the spiral pipe pile 1 completes secondary anchoring, a limit block 4 is placed inside the steel pipe pile 102, and then the photovoltaic bracket 5 is inserted into the steel pipe pile 102. An opening corresponding to the mounting hole 104 is provided on the photovoltaic bracket 5. The through bolt 106 is passed through the mounting hole 104 and the opening of the photovoltaic bracket 5, and reinforcement plates 107 and locking nuts 108 are installed at both ends of the through bolt 106 that extend beyond the steel pipe pile 102 to strengthen the connection, so that the photovoltaic bracket 5 can be stably set on the spiral pipe pile 1.

[0045] like Figure 1 and Figure 2As shown, in some embodiments, a sealing rubber ring 105 is provided on the top of the steel pipe pile 102. After the initial construction is completed and put into use, the photovoltaic bracket 5 and the steel pipe pile 102 are sealed by the sealing rubber ring 105 to prevent rainwater or other debris from entering the steel pipe pile 102 and causing equipment corrosion.

[0046] In some embodiments, a water dispersion slope may be provided at the root of the spiral pipe pile 1 where it meets the ground 6 to prevent rainwater from accumulating at the root of the spiral pipe pile 1 and seeping downward.

[0047] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the second end of the anchor rod 3 is provided with an insertion portion 302. Specifically, in order to facilitate the anchor rod 3 to be inserted into the soil layer more effortlessly under the push of the telescopic member 202, the insertion portion 302 is provided at the second end of the anchor rod 3. The insertion portion 302 can be as follows: Figure 5 In other embodiments, the inserting portion 302 may also be a flat head, which facilitates the anchor rod 3 to cut into the soil and increases the anchoring area of ​​the anchor rod 3.

[0048] like Figure 1 and Figure 2 As shown, in some embodiments, a plurality of anchor holes 101 are provided on the pipe wall of the steel pipe pile 102 , and the plurality of anchor holes 101 are dispersedly arranged around the spiral blade 103 at different heights.

[0049] Specifically, a group of anchor rods 3 with different bevel angles are evenly distributed around each spiral blade 103. The spiral blade 103 and the group of anchor rods 3 around it form a cross anchoring, so that the spiral pipe pile 1 has a better anchoring effect. At the same time, in order to avoid too many holes affecting the strength of the steel pipe pile 102 itself, only one anchor hole 101 is opened at the same height.

[0050] In some embodiments, in the photovoltaic support spiral pile foundation structure disclosed in the present invention, the outer periphery of the steel pipe pile 102 is welded with multiple spiral blades 103 in sequence along the height direction, and each spiral blade 103 is evenly distributed around a group of anchor holes 101, and the multiple anchor holes 101 are dispersed along the height direction. The rod 201 of the driving component 2 is also dispersed along the height direction with multiple telescopic parts 202 and accommodating cavities 204 corresponding to the group of anchor holes 101.

[0051] In the early stage of construction, after the first group of construction workers screwed the spiral pipe pile 1 into the construction, the second group of construction workers carried out secondary anchoring. The secondary anchoring operation process is as follows: S1, adjust the telescopic member 202 on the rod 201 to the outside of the accommodating cavity 204, connect the anchor rod 3 to the telescopic member 202 using the first connecting block 203 and the second connecting block 301 with magnetic sheets, and drive the telescopic member 202 to drive the anchor rod 3 to be retracted into the accommodating cavity 204; S2, insert the driving assembly 2 with the anchor rod 3 into the steel pipe pile 102, and when it corresponds to a group of anchor holes 101 near the lowest spiral blade 103, insert the through bolt 106 into the mounting hole 104 and the corresponding positioning hole, drive the telescopic member 202 to insert the anchor rod 3 from the anchor hole 101 into the soil to complete the anchoring of a group of anchor rods 3, and lift the rod 201 upward; S3, repeat S1 and S2 to complete the anchoring of the anchor rods 3 near all the spiral blades 103 from bottom to top. At this time, the spiral pipe pile 1 forms a cross anchoring at the position of each spiral blade 103; S4. Insert the limit block 4 into the steel pipe pile 102 to ensure the anchoring effect of the anchor rod 3.

[0052] In the later recovery stage, the anchor release operation process is as follows: S1, taking out the limit block 4 inside the steel pipe pile 102; S2, adjust the telescopic member 202 on the rod 201 to a position outside the accommodating cavity 204 where the first connecting block 203 and the second connecting block 301 can be slidably connected, insert the rod 201 downward so that the anchor rod 3 and the telescopic member 202 are connected to each other, drive the telescopic member 202 to retract the anchor rod 3 from the anchor hole 101 into the accommodating cavity 204 for contact anchoring, and lift the rod 201 upward; S3, the telescopic member 202 on the rod 201 is adjusted to the outside of the accommodating cavity 204, and the construction personnel remove the anchor rod 3; S4, repeat S2 and S3, and release the anchor rods 3 near all the spiral blades 103 from top to bottom. At this time, the spiral pipe pile 1 can be reversed and pulled out smoothly.

[0053] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0054] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A photovoltaic support screw pile foundation structure, characterized in that: It comprises a spiral pipe pile (1) with an anchor hole (101), an anchor rod (3), and a driving assembly (2) that can be placed inside the spiral pipe pile (1); The driving assembly (2) is capable of driving the anchor rod (3) to move between a first relative position and a second relative position relative to the spiral pipe pile (1); in the first relative position, the anchor rod (3) extends out of the spiral pipe pile (1) through the anchor hole (101) to strengthen the bearing capacity of the foundation; in the second relative position, the anchor rod (3) is located inside the spiral pipe pile (1), so that the spiral pipe pile (1) can be reversed and pulled out.

2. The photovoltaic support screw pile foundation structure according to claim 1, characterized in that: The spiral pipe pile (1) comprises a steel pipe pile (102) and a plurality of spiral blades (103) arranged on the steel pipe pile (102); the anchoring hole (101) is provided on the pipe wall of the steel pipe pile (102).

3. The photovoltaic support screw pile foundation structure according to claim 2, characterized in that: The driving assembly (2) comprises a rod (201) capable of being inserted into the steel pipe pile (102), the rod (201) being provided with a telescopic member (202), the telescopic member (202) being used to drive the anchor rod (3) to move between the first relative position and the second relative position relative to the spiral pipe pile (1).

4. The photovoltaic support screw pile foundation structure according to claim 3, characterized in that: An accommodating cavity (204) is provided on the outer peripheral surface of the rod member (201), the first end of the telescopic member (202) is arranged in the accommodating cavity (204), and the telescopic member (202) can drive the anchor rod (3) to move into the accommodating cavity (204) to reach the second relative position.

5. The photovoltaic support screw pile foundation structure according to claim 4, characterized in that: The second end of the telescopic member (202) is provided with a first connection block (203), the first end of the anchor rod (3) is provided with a second connection block (301), and the first connection block (203) and the second connection block (301) are detachably plugged in along the insertion direction of the rod member (201); In the first relative position, the first connection block (203) and the second connection block (301) are located outside the accommodating cavity (204).

6. The photovoltaic support screw pile foundation structure according to claim 5, characterized in that: The photovoltaic support spiral pile foundation structure further comprises a limit block (4) that can be placed inside the steel pipe pile (102), and the second connection block (301) abuts against the limit block (4) to maintain the first relative position between the spiral pipe pile (1) and the anchor rod (3).

7. The photovoltaic support screw pile foundation structure according to claim 5, characterized in that: The size of the second connection block (301) is larger than the size of the anchor hole (101).

8. The photovoltaic support screw pile foundation structure according to claim 3, characterized in that: The upper portion of the steel pipe pile (102) is provided with a mounting hole (104), and the rod (201) is provided with a positioning hole capable of cooperating with the mounting hole (104).

9. The photovoltaic support screw pile foundation structure according to claim 3, characterized in that: The second end of the anchor rod (3) is provided with an insertion portion (302).

10. The photovoltaic support screw pile foundation structure according to claim 2, characterized in that: A plurality of anchor holes (101) are provided on the tube wall of the steel tube pile (102), and the plurality of anchor holes (101) are dispersedly arranged at different heights around the spiral blade (103).

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