Square pile base assembly used for being connected with photovoltaic support

Abstract

The square pile base assembly comprises a square pile and a square-to-circle connecting part, the square-to-circle connecting part comprises a square hoop part, a transition part and a circular hoop part, the square hoop part is configured to be connected with the periphery of the square pile in an attached mode, the transition part is located between the circular hoop part and the square hoop part, and the circular hoop part is configured to be connected with the periphery of the square pile in an attached mode. The circular hoop piece and the square hoop piece are connected through the transition piece, so that the circular hoop piece surrounds the periphery of the square pile and the square hoop piece, and the circular hoop piece is further configured to be connected with a photovoltaic support. According to the square pile base assembly, large-scale application of the square pile in a centralized photovoltaic project is achieved, the bottleneck of material waste of a traditional pipe pile system is broken through, and the benefits of cost reduction and efficiency improvement are achieved on the premise that construction flexibility is guaranteed.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power generation technology, and in particular to a square pile base assembly for connection with a photovoltaic support. Background Technology

[0002] In current centralized photovoltaic power generation projects, high-strength prestressed concrete pipe piles have become the mainstream foundation support form due to their mature technology and convenient top connection method (often using a clamp-type node to adjust the inclination angle of the support). However, this structural system has significant mechanical compatibility issues.

[0003] Pipe piles are designed to withstand axial pressure (bearing piles). By strengthening the inter-segment connections through specific structures, they can also meet certain pull-out resistance requirements. However, their annular cross-section characteristics result in relatively low moments of inertia and section modulus. Furthermore, the material distribution within the cross-section is not far from the neutral axis, leading to poor bending efficiency. In contrast, with the same material usage (i.e., the same cross-sectional area), rectangular (square pile) cross-sections, whether solid or hollow, exhibit significantly better bending performance (section modulus) than circular cross-sections (see Table 1 below). This means that to achieve the same section modulus design target, square piles can use smaller cross-sectional dimensions (side length smaller than the diameter of a circular pile), thus significantly reducing material usage. Similarly, while meeting the same out-of-plane cracking moment and ultimate bending moment design values, the square pile scheme offers higher material utilization efficiency and economy.

[0004] Table 1

[0005]

[0006]

[0007] Therefore, from the perspective of structural mechanics optimization, using rectangular section piles, especially prestressed concrete hollow square piles (PHS square piles), can theoretically achieve the highest material utilization rate and structural efficiency (see...). Figure 1 However, the strict directionality of square piles constitutes a key constraint on their application in photovoltaic projects: the orientation requirements of the pile axis are high during construction, and when connected to the upper photovoltaic support array, the nodes cannot provide the flexible azimuth adjustment freedom that the circular pipe pile sleeve connection has, resulting in insufficient adaptability to on-site installation and limiting their large-scale application in photovoltaic support systems that require complex angle adjustments.

[0008] In summary, the prestressed concrete pipe piles currently in widespread use are prone to damage such as circumferential cracks when subjected to significant out-of-plane bending moments generated by photovoltaic supports. The fundamental reason lies in the inherently low bending resistance efficiency of their annular cross-section. Theoretically superior square pile solutions are limited by their directional nature, resulting in insufficient flexibility in construction and connection. This contradiction constitutes the core challenge in the optimized design of photovoltaic support foundations.

[0009] Therefore, the present invention provides a square pile base assembly for connection with photovoltaic brackets, enabling the large-scale application of square piles in centralized photovoltaic projects, breaking through the material waste bottleneck of traditional pipe pile systems, and achieving the benefits of "cost reduction and efficiency improvement" while ensuring construction flexibility. Summary of the Invention

[0010] The purpose of this application is to provide a square pile base assembly for connection with photovoltaic brackets, so as to realize the large-scale application of square piles in centralized photovoltaic projects, break through the material waste bottleneck of traditional pipe pile systems, and achieve the benefits of "cost reduction and efficiency improvement" while ensuring construction flexibility.

[0011] The first aspect of this application provides a square pile base assembly for connection with a photovoltaic support, comprising: a square pile and a square-to-round connecting component, the square-to-round connecting component comprising: a square clamp, a transition member, and a round clamp, wherein the square clamp is configured to fit snugly around the perimeter of the square pile, the transition member is located between the round clamp and the square clamp, and the transition member connects the round clamp and the square clamp, thereby causing the round clamp to surround the perimeter of the square pile and the square clamp, and the round clamp is further configured to connect with the photovoltaic support.

[0012] In another preferred embodiment, the square clamp includes four side panels for forming a square and a first fastener for fastening the square clamp to the outer periphery of the square pile.

[0013] In another preferred embodiment, the square clamp further includes a horizontal lower edge side wing plate extending outward from the bottom surface of the side panel, the horizontal lower edge side wing plate being used to support the circular clamp.

[0014] In another preferred embodiment, the horizontal lower edge side wing is crescent-shaped.

[0015] In another preferred embodiment, the side panel is rectangular in shape.

[0016] In another preferred embodiment, the number of the horizontal lower edge side panels is at least two, with the two horizontal lower edge side panels extending outward from the bottom surfaces of the two opposite side panels, respectively.

[0017] In another preferred embodiment, the transition member is a circular joint side plate, which includes at least two arc-shaped plates. The two ends of each arc-shaped plate are respectively connected to the connection points of two adjacent side plates of the square clamp member, and the inner surface of the arc-shaped plate faces the side plate. The two arc-shaped plates are arranged opposite to each other.

[0018] In another preferred embodiment, the inner surface of the arc-shaped plate is a concave surface.

[0019] In another preferred embodiment, in the radial direction of the circular clamp, the outer periphery of the horizontal lower edge side wing plate slightly extends beyond the arc-shaped plate, thereby supporting the circular clamp and preventing it from sliding down.

[0020] In another preferred embodiment, the circular clamp is fastened to the outer surface of the circular coupling side plate by a second fastener, thereby securing the circular clamp to the square clamp.

[0021] In another preferred embodiment, a plurality of horizontal ribs are provided in the space formed by the arc-shaped plate and the side panel, with one end of each horizontal rib connected to the arc-shaped plate and the other end connected to the side panel, thereby fastening the circular clamp to the square clamp.

[0022] In another preferred embodiment, the transition member is a shaped concrete molded member disposed around the square clamp member, the shaped concrete molded members being disposed opposite each other, the shaped concrete molded members filling the space between the side plate of the square clamp member and the circular clamp member, each shaped concrete molded member having a rectangular inner surface for connecting with the outer surface of the side plate of the square clamp member, and a curved outer surface for clamping the circular clamp member onto the concrete molded member.

[0023] In another preferred embodiment, the shaped concrete molded parts are 2 or 4.

[0024] In another preferred embodiment, the circular clamp is fastened to the curved outer surface of the concrete molding by a second fastener.

[0025] Preferably, the first fastener and the second fastener are bolt fasteners.

[0026] In another preferred embodiment, the shaped concrete molded part is disposed above the horizontal lower edge side wing plate.

[0027] In another preferred embodiment, the shaped concrete molded part further includes an upper surface and a lower surface, wherein the maximum width L1 of the lower surface is greater than the maximum width L of the upper surface.

[0028] In another preferred embodiment, the maximum width L1 of the lower surface is slightly larger than the maximum width L of the upper surface.

[0029] In another preferred embodiment, the square pile is a prestressed concrete hollow square pile.

[0030] A second aspect of this application provides a photovoltaic support connection node, which includes a photovoltaic support and the aforementioned square pile base assembly.

[0031] It should be understood that, within the scope of this invention, the above-described technical features of this invention and the technical features specifically described below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. It should be understood that the accompanying drawings described below are merely some implementation examples of the present invention, and those skilled in the art can obtain other implementation examples based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structural performance data of pipe piles and square piles in the existing technology;

[0034] Figure 2a This is a schematic diagram of the structure of the square-to-round connecting component according to the first embodiment of this application;

[0035] Figure 2b This is a top view of the square-to-round connecting component according to the first embodiment of this application;

[0036] Figure 3 This is an exploded structural diagram of the square-to-round connecting component according to the first embodiment of this application;

[0037] Figure 4 This is a partial structural schematic diagram of the square-to-round connecting component according to the second embodiment of this application;

[0038] Figure 5 This is an exploded view of the square-to-round connecting component according to the second embodiment of this application;

[0039] Figure 6 This is a schematic diagram of a square pile base assembly for connection with a photovoltaic support according to a second embodiment of this application;

[0040] Figure 7 This is a mid-longitudinal sectional view of the square pile foundation assembly according to the second embodiment of this application;

[0041] Figure 8 A schematic diagram showing the connection between the square pile base assembly and the photovoltaic support is presented.

[0042] In each of the attached figures, the markings are as follows:

[0043] 1-Square clamp piece

[0044] 11-Side panel

[0045] 12-First Fastener

[0046] 13-Horizontal lower edge side wing plate

[0047] 2-Transition component

[0048] 21-Circular joint side plate

[0049] 22-Concrete Molded Parts

[0050] 3- Circular clamp

[0051] 31-Second Fastener Detailed Implementation

[0052] Through extensive and in-depth research, the inventors have developed for the first time a square pile foundation assembly for connection with photovoltaic (PV) brackets. By using square piles as the base of the PV bracket, the load-bearing system of the PV foundation is reconstructed, releasing the bending potential of the rectangular cross-section and significantly improving material utilization. Simultaneously, this enables the large-scale application of square piles in centralized PV projects, overcoming the material waste bottleneck of traditional pipe pile systems, and achieving the benefits of "cost reduction + efficiency improvement" while ensuring construction flexibility.

[0053] In the following description, many technical details are presented to help the reader better understand this application. However, those skilled in the art will understand that the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0054] the term

[0055] As used in this article, the "square-to-round connecting component" and the "square-to-round clamping component" are interchangeable;

[0056] PHS square pile: prestressed concrete hollow square pile.

[0057] In this invention, all directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0058] This application has at least one of the following advantages:

[0059] (a) The square pile base assembly for connection with photovoltaic support in this application enables the large-scale application of PHS square piles in centralized photovoltaic projects (breaking through directional constraints), and its construction adaptability is comparable to that of pipe piles.

[0060] (b) The square pile base assembly for connection with photovoltaic brackets in this application reconstructs the photovoltaic foundation stress system by using square piles as the base of photovoltaic brackets, releasing the bending potential of rectangular cross sections and greatly improving material utilization.

[0061] (c) The square pile base assembly for connection with photovoltaic support in this application combines the construction flexibility of pipe piles with the mechanical advantages of square piles, achieving the effects of economic applicability and low carbon emission reduction.

[0062] To make the objectives, technical solutions, and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. It should be understood that these are merely examples provided to the reader of possible implementations of the present invention and are not intended to limit the scope of the invention.

[0063] Example 1

[0064] See Figure 2- Figure 3 as well as Figure 8 ,in, Figure 2a A schematic diagram of the square-to-round connecting component is shown. Figure 2b A top view of the square-to-round connecting component is shown. Figure 3 An exploded structural diagram of the square-to-round connecting component is shown. This embodiment provides a square pile base assembly for connection with a photovoltaic support, including: a square pile and a square-to-round connecting component. The square-to-round connecting component includes: a square clamp 1, a transition piece 2, and a round clamp 3. The square clamp 1 is configured to fit snugly around the square pile. The transition piece 2 is located between the round clamp 3 and the square clamp 1, and connects the round clamp 3 to the square clamp 1 through the transition piece 2, so that the round clamp 3 surrounds the square pile and the square clamp 1. The round clamp 3 is also configured to connect with the photovoltaic support, realizing seamless connection between the square pile and the support, which can easily adjust the installation angle and reduce the installation difficulty.

[0065] In this embodiment, the square clamp 1 includes four side panels 11 forming a square shape and a first fastener 12. The first fastener 12 is used to tightly clamp the square clamp 1 to the outer periphery of the square pile, that is, the square clamp 1 is securely connected to the square pile. Preferably, the side panels are rectangular in shape, and the side panels 11 include a first side panel, a second side panel, a third side panel, and a fourth side panel. The first and second side panels are arranged opposite to each other, and the third and fourth side panels are arranged opposite to each other.

[0066] The square clamp 1 also includes a horizontal lower edge side wing plate 13 extending outward from the bottom surface of the side panel 11. The horizontal lower edge side wing plate 13 is used to receive the circular clamp 3. Preferably, the horizontal lower edge side wing plate 13 is crescent-shaped. The outer periphery of the horizontal lower edge side wing plate 13 slightly extends beyond the arc-shaped plate, thereby receiving the circular clamp 3 and preventing the circular clamp 3 from slipping down. The number of horizontal lower edge side wing plates 13 is at least two, namely a first horizontal lower edge side wing plate and a second horizontal lower edge side wing plate, with the two horizontal lower edge side wing plates 13 extending outward from the bottom surface of two opposing side panels 11 (e.g., the first side panel and the second side panel, or the third side panel and the fourth side panel), respectively. In this embodiment, the transition member 2 is a circular connecting side plate 21. The circular connecting side plate 21 includes at least two arc-shaped plates, namely a first arc-shaped plate and a second arc-shaped plate. The two ends of each arc-shaped plate are respectively connected to the connection of two adjacent side plates 11 of the square clamp member 1, and the inner surface (i.e. concave surface) of the arc-shaped plate faces the side plate 11. The two arc-shaped plates are arranged opposite to each other, that is, the circular clamp member 3 is connected to the square clamp member 1 through the circular connecting side plate 2.

[0067] The circular clamp 3 is fastened to the outer surface of the circular joint side plate 21 by the second fastener 31, so that the circular clamp 3 and the square clamp 1 are fastened together.

[0068] Preferably, multiple horizontal ribs are provided in the space formed by the arc plate and the side plate 11. One end of each horizontal rib is connected to the arc plate and the other end is connected to the side plate 11, so that the connection between the circular clamp 3 and the square clamp 1 is more secure.

[0069] Preferably, the first fastener and the second fastener 31 are bolt fasteners. The square pile is a prestressed concrete hollow square pile.

[0070] Figure 8 A photovoltaic support connection node is shown, at which a schematic diagram of the connection between the square pile base assembly and the photovoltaic support is displayed.

[0071] Example 2

[0072] See Figure 4-7 , Figure 4 This is a partial structural diagram of the square-to-round connecting component; Figure 5 This is an exploded structural diagram of the square-to-round connecting component; Figure 6 This is a schematic diagram of a square pile base assembly used for connection with photovoltaic brackets; Figure 7 This is a mid-longitudinal sectional view of the square pile foundation assembly. Unlike Embodiment 1, the circular connecting side plate 21 is replaced by a plastic concrete molding 22, and the circular clamp 3 is fixed to the plastic concrete molding 22 by bolt fasteners (i.e., the second fastener 31), achieving the same connection method as the pipe pile.

[0073] Specifically, see Figure 4The transition piece 2 is a plastic concrete molding piece 22 disposed around the square clamp piece 1. The plastic concrete molding pieces 22 are disposed opposite each other and fill the space between the side plate 11 of the square clamp piece 1 and the circular clamp piece 3 (the circular clamp piece 3 opposite to the square clamp piece 1). Each plastic concrete molding piece 22 has a rectangular inner surface for connecting with the outer surface of the side plate 11 of the square clamp piece 1, and a curved outer surface for fastening the circular clamp piece 3 to the concrete molding piece 22.

[0074] Preferably, see Figure 5 and Figure 6 The transition component 2 consists of four shaped concrete moldings 22 arranged around the square clamp component 1, which fill the space between the square clamp component 1 and the circular clamp component 3.

[0075] See Figure 6 and 7 The circular clamp 3 is fastened to the curved outer surface of the concrete molding component by the second fastener 31. The shaped concrete molding component 22 is positioned above the horizontal lower edge side flange 13. See also Figure 7 The shaped concrete molding 22 also includes an upper surface and a lower surface, with the maximum width L1 of the lower surface being greater than the maximum width L of the upper surface. The maximum width L1 of the lower surface is slightly greater than the maximum width L of the upper surface to prevent the circular clamp 3 from slipping down.

[0076] It should be noted that in this patent application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to an element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

[0077] All documents mentioned in this application are considered to be incorporated in their entirety into the disclosure of this application so that they can serve as a basis for modifications if necessary. Furthermore, it should be understood that after reading the foregoing disclosure of this application, those skilled in the art can make various alterations or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. A square pile base assembly for connection with a photovoltaic support, characterized in that, include: A square pile and a square-to-round connecting component, the square-to-round connecting component including: a square clamp (1), a transition component (2) and a round clamp (3), wherein the square clamp (1) is configured to fit and connect with the square pile around its perimeter, the transition component (2) is located between the round clamp (3) and the square clamp (1), and the round clamp (3) is connected to the square clamp (1) through the transition component (2), so that the round clamp (3) surrounds the square pile and the square clamp (1), and the round clamp (3) is also configured to connect with the photovoltaic bracket.

2. The square pile foundation assembly as described in claim 1, characterized in that, The square clamp (1) includes four side panels (11) for forming a square and a first fastener (12), which is used to fasten the square clamp (1) to the outer periphery of the square pile.

3. The square pile foundation assembly as described in claim 2, characterized in that, The square clamp (1) also includes a horizontal lower edge side wing plate (13) extending outward from the bottom surface of the side panel (11), the horizontal lower edge side wing plate (13) being used to support the circular clamp (3).

4. The square pile foundation assembly as described in claim 3, characterized in that, The number of the horizontal lower edge side wing plates (13) is at least 2, and the two horizontal lower edge side wing plates (13) extend outward from the bottom surface of the two opposite side wing plates (11).

5. The square pile foundation assembly as described in claim 4, characterized in that, The transition piece (2) is a circular joint side plate (21), which includes at least two arc-shaped plates. The two ends of each arc-shaped plate are respectively connected to the connection of two adjacent side plates (11) of the square clamp (1), and the inner surface of the arc-shaped plate faces the side plate (11). The two arc-shaped plates are arranged opposite to each other.

6. The square pile foundation assembly as described in claim 5, characterized in that, The circular clamp (3) is fastened to the outer surface of the circular joint side plate (21) by the second fastener (31), thereby making the circular clamp (3) and the square clamp (1) securely connected together.

7. The square pile foundation assembly as described in claim 6, characterized in that, Multiple horizontal ribs are provided in the space formed by the arc plate and the side plate (11). One end of each horizontal rib is connected to the arc plate and the other end is connected to the side plate (11), so that the circular clamp (3) and the square clamp (1) are fastened together.

8. The square pile foundation assembly as described in claim 4, characterized in that, The transition piece (2) is a plastic concrete molding piece (22) disposed around the square clamp piece (1). The plastic concrete molding pieces (22) are disposed opposite each other. The plastic concrete molding pieces (22) fill the space between the side plate (11) of the square clamp piece (1) and the circular clamp piece (3). Each plastic concrete molding piece (22) has a rectangular inner surface for connecting with the outer surface of the side plate (11) of the square clamp piece (1) and a curved outer surface for clamping the circular clamp piece (3) onto the concrete molding piece (22).

9. The square pile foundation assembly as described in claim 8, characterized in that, The shaped concrete molding (22) also includes an upper surface and a lower surface, wherein the maximum width L1 of the lower surface is greater than the maximum width L of the upper surface.

10. A photovoltaic support connection node, characterized in that, The photovoltaic support connection node includes a photovoltaic support and a square pile base assembly as described in any one of claims 1-9.

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