Fixed connection device for offshore photovoltaic support and photovoltaic support

Abstract

The utility model provides a fixed connecting device for an offshore photovoltaic support and the photovoltaic support, and relates to the technical field of offshore photovoltaic supports. The device comprises a pile foundation with a connecting opening formed in the top end; the connecting base comprises a deviation rectifying mechanism, and the deviation rectifying mechanism is used for being inserted into the connecting opening during connection so as to achieve guiding and positioning of the connecting base at the mounting position of the pile foundation; the fastening assembly is arranged at the connecting position of the pile foundation and the connecting base and partially fixed to the top end of the pile foundation. Wherein the fastening assembly compresses and fixes the connecting base to the top end of the pile foundation in a fastening connection mode, and the photovoltaic support body of the photovoltaic support is fixedly connected to the connecting base. According to the technical scheme, the stability and reliability of connection between the support and the pile foundation can be improved, the efficiency of connection between the support and the pile foundation during offshore operation is improved, and therefore the safety of operators is improved.

Description

Technical Field

[0001] This utility model relates to the field of marine photovoltaic support technology, and in particular to a fixed connection device and a photovoltaic support for marine photovoltaic support. Background Technology

[0002] For fixed offshore photovoltaic systems, a large number of pile foundations need to be driven into the sea according to the design location, and then the upper photovoltaic support and modules are hoisted to the installation location as a whole, and the connecting device on the lower side of the photovoltaic support is welded to the top of the pile foundation.

[0003] However, the humid and salty marine environment can affect the stability and quality of the weld, potentially leading to defects in the weld joint. Furthermore, environmental loads such as wind and waves at sea can cause the lifting vessel to sway, and prolonged welding operations can affect the welding quality and reduce welding efficiency. In addition, offshore welding operations need to be carried out in confined spaces, which increases safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a fixed connection device and photovoltaic support for offshore photovoltaic support, thereby improving the connection stability and reliability between the support and the pile foundation, increasing the connection efficiency between the support and the pile foundation during offshore operations, and thus improving the safety of the operators.

[0005] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0006] According to one aspect of the present invention, a fixing connection device for offshore photovoltaic support is provided, comprising:

[0007] The pile foundation has a connection opening at the top.

[0008] The connecting base includes a correction mechanism, which is used to insert into the connecting opening during connection to guide and position the connecting base at the installation position of the pile foundation.

[0009] A fastening assembly is provided at the connection point between the pile foundation and the connecting base, and is partially fixed to the top of the pile foundation;

[0010] The fastening assembly presses and fixes the connecting base to the top of the pile foundation by a fastening connection, and the photovoltaic bracket of the photovoltaic bracket is fixedly connected to the connecting base.

[0011] According to one embodiment of the present invention, the pile foundation includes:

[0012] The pipe pile body is fixed at one end below the sea surface and extends out of the sea surface at the other end;

[0013] The top plate is fixedly installed at the end of the pipe pile body that extends out of the sea surface, and the connection opening is opened in the middle of the top plate;

[0014] A reinforcing plate is disposed inside the pipe pile body, extending in a direction perpendicular to the plane in which the top plate extends, and one side is fixedly connected to the inner wall surface of the pipe pile body, while the adjacent side is fixedly connected to the inner side of the top plate.

[0015] According to one embodiment of the present invention, a connecting protrusion is provided on the periphery of the top plate, the extending direction of the connecting protrusion is perpendicular to the plane of the top plate, and a first connecting inclined surface is formed on the connecting protrusion.

[0016] The fastening assembly is partially fixed to the top plate via the first connecting ramp, and the connecting base is pressed and fixed to the top of the pile foundation by the fastening assembly that is partially fixed to the top plate.

[0017] According to one embodiment of the present invention, the fastening assembly includes:

[0018] The first fastening ring is fitted onto one side of the connecting base;

[0019] The second fastening ring has a second connecting slope formed on the inner ring side, and the inclination angle of the second connecting slope is adapted to that of the first connecting slope. The second fastening ring is fixedly connected to the connecting protrusion wall through the first connecting slope and the second connecting slope, thereby achieving a partial fixed connection with the top plate.

[0020] Fasteners are used to pass through the corresponding connecting holes on the first and second fastening rings to fasten the first and second fastening rings together, and the connecting base is pressed and fixed between the first and second fastening rings.

[0021] According to one embodiment of the present invention, the connecting base includes a base plate, and the correction mechanism on the connecting base is disposed on one side of the base plate;

[0022] When the second fastening ring is fixedly connected to the connecting protruding wall through the first connecting inclined surface and the second connecting inclined surface, the second fastening ring and the side of the top plate away from the pipe pile body form a stepped surface, and the bottom plate can be fully embedded in the fixed cavity formed by the side of the first fastening ring and the stepped surface.

[0023] The diameter of the base plate is smaller than the inner ring diameter of the second fastening ring, but larger than the inner ring diameter of the first fastening ring.

[0024] According to one embodiment of the present invention, the correction mechanism includes at least two correction plates, which are disposed on one side of the base plate of the connecting base, and one side is fixedly connected to the surface of the base plate, with the extension direction perpendicular to the plane where the extension direction of the base plate is located.

[0025] The at least two correction plates are fixedly connected to each other at their respective central axes to form correction guide feet. When connected, the correction guide feet are inserted into the connection opening, and the connection base is guided and positioned to the installation position of the pile foundation through the waist edges of the at least two correction plates and the connection opening.

[0026] According to one embodiment of the present invention, after the guide foot is inserted into the connection opening, the waist edge of the at least two guide plates near the base plate is connected to the edge of the connection opening with a gap fit.

[0027] According to one embodiment of the present invention, the connecting base includes:

[0028] The connecting frame is located on the side away from the correction mechanism and is composed of multiple connecting stiffeners that are radially distributed along the outer edge of the base plate. One side of each connecting stiffener is fixedly connected to the surface of the base plate, and the extending direction is perpendicular to the plane where the extending direction of the base plate is located.

[0029] A ball joint is fixedly connected to the side of the connecting rib plate away from the base plate and is at least partially embedded in the recessed cavity formed by the connecting rib plate, for welding and fixing at least one support rod of a photovoltaic bracket.

[0030] According to one embodiment of the present invention, when the connecting base is pressed and fixed between the first fastening ring and the second fastening ring, the outer edges of the plurality of connecting ribs are gap-fitted with the inner ring edge of the first fastening ring.

[0031] According to another aspect of the present invention, a photovoltaic support frame is provided, which includes the fixing connection device for offshore photovoltaic support frames of the present invention.

[0032] As can be seen from the above technical solution, this utility model possesses at least one of the following advantages and positive effects:

[0033] This utility model provides a fixed connection device for offshore photovoltaic (PV) supports, which effectively improves the connection quality and reliability between PV supports and pile foundations. By setting up a correction mechanism to guide and position the connection base, the alignment operation during installation is simplified. Even with factors such as ship swaying during offshore construction, rapid and accurate docking can be achieved, significantly improving installation efficiency. Simultaneously, the device uses fastening components for mechanical connection, replacing traditional welding methods. This avoids the impact of the humid and salt spray environment at sea on weld quality, reducing the risk of structural failure due to welding defects, thereby improving the overall structural stability and durability. Furthermore, this connection method eliminates the need for high-risk offshore welding operations, enabling efficient installation within limited space, significantly reducing construction safety hazards, and adapting to complex offshore wind and wave environments. The fastening connection also has good disassembly, facilitating later maintenance and replacement, improving system maintainability and lifecycle management efficiency. Moreover, this device supports standardized and modular production of connection structures, facilitating the prefabrication of support components in the factory. On-site, only insertion and fastening operations are required, which is conducive to promoting the efficient and large-scale development of offshore PV support construction. Attached Figure Description

[0034] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0035] Figure 1 This is a structural schematic diagram of the fixed connection device for offshore photovoltaic support in the connected state according to this utility model.

[0036] Figure 2 This is a structural schematic diagram of the fixed connection device for offshore photovoltaic support in the present invention in the unconnected state.

[0037] Figure 3 yes Figure 1 A cross-sectional schematic diagram of the fixing connection device for offshore photovoltaic support in the mid-connection state.

[0038] Figure 4 yes Figure 3 A magnified view of a portion at point C.

[0039] Figure 5 This is a three-dimensional structural diagram of the connecting base in one embodiment of the present invention.

[0040] Figure 6 yes Figure 5 The front view of the connecting base.

[0041] Figure 7 yes Figure 5 A top view of the connecting base.

[0042] Figure 8 yes Figure 5 A top view of the connecting base.

[0043] Figure 9 This is a schematic diagram of the top of a pile foundation in one embodiment of this utility model.

[0044] Figure 10 yes Figure 9 Front view of the pile foundation.

[0045] Figure 11 yes Figure 10 Cross-sectional diagram at point AA

[0046] The annotations for the main components in the diagram are explained below:

[0047] 1. Pile foundation; 11. Connection opening; 12. Pipe pile body; 13. Top slab; 131. Connection protrusion; 14. Reinforcing plate;

[0048] 2. Connecting base; 21. Correction mechanism; 211. Correction plate; 22. Base plate; 23. Connecting frame; 231. Connecting stiffener; 24. Ball joint;

[0049] 3. Fastening assembly; 31. First fastening ring; 32. Second fastening ring; 33. Fastener;

[0050] 4. Photovoltaic support poles. Detailed Implementation

[0051] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0052] In this utility model, the terms "a", "one", "the", "the", and "at least one" are used to indicate the existence of one or more elements / components / etc.; the terms "comprising", "including", and "having" are used to indicate an open-ended inclusion meaning and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", and "third", etc., are used only as markings and are not a limitation on the number of objects.

[0053] This utility model proposes a fixing and connection device for offshore photovoltaic support structures. Firstly, it refers to... Figure 1As shown, the fixing and connection device for offshore photovoltaic support includes a pile foundation 1, a connecting base 2, and a fastening assembly 3. The pile foundation 1 has a connection opening 11 at its top. The connecting base 2 includes a correction mechanism 21, which is inserted into the connection opening 11 during connection to guide and position the connecting base 2 in the installation position on the pile foundation 1. The fastening assembly 3 is located at the connection point between the pile foundation 1 and the connecting base 2, and is partially fixed to the top of the pile foundation 1, pressing and fixing the connecting base 2 to the top of the pile foundation 1 through a fastening connection.

[0054] refer to Figures 1 to 3 , Figure 9 and Figure 11 As shown, the pile foundation 1 includes a pipe pile body 12, a top plate 13, and a reinforcing plate 14. Specifically: one end of the pipe pile body 12 is fixed below sea level, and the other end extends above sea level. The top plate 13 is fixedly installed at the end of the pipe pile body 12 extending above sea level, with a connecting opening 11 located in the middle of the top plate 13. The reinforcing plate 14 is installed inside the pipe pile body 12, extending perpendicularly to the plane containing the extension direction of the top plate 13, with one side fixedly connected to the inner wall surface of the pipe pile body 12, and the adjacent side fixedly connected to the inner side of the top plate 13.

[0055] refer to Figures 1 to 8 As shown, the correction mechanism 21 of the connecting base 2 includes at least two correction plates 211, which are disposed on one side of the base plate 22 of the connecting base 2, and one side is fixedly connected to the surface of the base plate 22, with the extension direction perpendicular to the plane where the extension direction of the base plate 22 is located. For example, the correction mechanism 21 can be composed of three correction plates 211 of different lengths, one of which is longer than the other two. The longer correction plate 211 is positioned in the middle of the connecting base 2, and the other two shorter correction plates 211 are vertically welded to both sides of the longer correction plate 211, forming correction guide feet on the connecting base 2. Alternatively, the correction mechanism 21 can be composed of two correction plates 211 of the same length. Each correction plate 211 has an insertion interface at its central axis. The correction plates 211 are inserted into each other at their respective central axes through the insertion interfaces and welded to the connecting base 2 to form correction guide feet. When connected, the correction guide feet are inserted into the connecting opening 11, and the connecting base 2 is guided and positioned to the installation position of the pile foundation 1 through the waist edges of at least two correction plates 211 and the connecting opening 11.

[0056] refer to Figures 1 to 3As shown, the fastening assembly 3 includes a first fastening ring 31, a second fastening ring 32, and a fastener 33. The first fastening ring 31 is sleeved on one side of the connecting base 2. The inner ring side of the second fastening ring 32 forms a second connecting inclined surface, and the inclination angle of the second connecting inclined surface matches that of the first connecting inclined surface. The second fastening ring 32 is fixedly connected to the connecting protrusion 131 through the first and second connecting inclined surfaces, achieving a partial fixed connection with the top plate 13. The fastener 33 is used to pass through the corresponding connecting holes on the first and second fastening rings 31 and 32, fastening the first and second fastening rings 31 and 32 together. The connecting base 2 is pressed and fixed between the first and second fastening rings 31 and 32.

[0057] The fixed connection device for offshore photovoltaic (PV) supports provided by this utility model can effectively improve the connection quality and reliability between the PV support and the pile foundation 1. By setting a correction mechanism 21 to guide and position the connecting base 2, the alignment operation during installation can be simplified. Even in the case of ship swaying during offshore construction, it can achieve rapid and accurate docking, significantly improving installation efficiency. At the same time, the device uses fastening components 3 for mechanical connection, replacing the traditional welding method, avoiding the impact of the humid and salt spray environment at sea on the weld quality, reducing the risk of structural failure caused by welding defects, thereby improving the stability and durability of the overall structure. In addition, this connection method does not require high-risk offshore welding operations, and can be installed efficiently in a limited space, significantly reducing construction safety hazards and adapting to complex offshore wind and wave environments. The fastening connection also has good disassembly, which facilitates later maintenance and replacement, improving the maintainability and life cycle management efficiency of the system. Moreover, this device can support the standardized and modular production of the connection structure, which facilitates the prefabrication of support components in the factory. On-site, only insertion and fastening operations are required, which is conducive to promoting the efficient and large-scale development of offshore PV support construction.

[0058] The following is combined with Figures 1 to 11 The fixing and connecting device for offshore photovoltaic support in this utility model is described in detail.

[0059] In one exemplary embodiment of this utility model, reference is made to Figures 1 to 3 , Figure 9 and Figure 11 As shown, the pile foundation 1 includes a pipe pile body 12, one end of which is fixed below the sea surface and the other end extends out of the sea surface; a top plate 13 is fixedly installed at the end of the pipe pile body 12 that extends out of the sea surface, and a connecting opening 11 is opened in the middle of the top plate 13; a reinforcing plate 14 is installed inside the pipe pile body 12, extending in a direction perpendicular to the plane where the extension direction of the top plate 13 is located, and one side is fixedly connected to the inner wall surface of the pipe pile body 12, and the adjacent side is fixedly connected to the inner side of the top plate 13.

[0060] Specifically, one end of the pipe pile body 12 is fixed below the sea surface to provide stable support, while the other end extends above the sea surface for easy connection to the connecting base 2. A top plate 13 is fixedly installed at the end of the pipe pile body 12 that extends above the sea surface, with a connecting opening 11 located in the middle of the top plate 13 to facilitate the insertion of the correction mechanism 21 of the connecting base 2 for guiding and positioning. A reinforcing plate 14 is installed inside the pipe pile body 12, extending perpendicularly to the plane containing the extension direction of the top plate 13. One side is fixedly connected to the inner wall surface of the pipe pile body 12, and the adjacent side is fixedly connected to the inner side of the top plate 13. This enhances the structural strength of the pipe pile body 12, providing localized reinforcement to the pile top and preventing damage from excessive impact during pile driving.

[0061] By installing the reinforcing plate 14, the structural strength of the pile top of the pipe pile body 12 is enhanced, improving the impact resistance of the pile top during pile driving and ensuring the stability and reliability of the pile foundation 1. Compared with related technologies, this solution improves the local strength of the pile top and its resistance to wind and waves while ensuring a stable connection between the connecting base 2 and the pile foundation 1, making it suitable for complex marine environments.

[0062] In one exemplary embodiment of this utility model, reference is made to Figure 3 , Figure 10 and Figure 11 As shown, a connecting protrusion 131 is provided on the periphery of the top plate 13. The extending direction of the connecting protrusion 131 is perpendicular to the plane where the top plate 13 is located, and a first connecting inclined surface is formed on the connecting protrusion 131. The fastening assembly 3 is partially fixedly connected to the top plate 13 through the first connecting inclined surface, and the connecting base 2 is pressed and fixed to the top of the pile foundation 1 by the fastening assembly 3 which is partially fixed to the top plate 13.

[0063] Specifically, the connection convex wall 131 makes the connection between the top plate 13 and the fastening assembly 3 more stable, and the design of the first connecting ramp further enhances the tightness of the connection. The fastening assembly 3 is fixedly connected to the top plate 13 through the first connecting ramp. This connection method not only improves the convenience of installation, but also ensures the stability and reliability of the connecting base 2 on the pile foundation 1. The connecting base 2 is pressed and fixed to the top of the pile foundation 1 by the fastening assembly 3. This fixing method effectively prevents the connecting base 2 from loosening and displacement in the marine environment.

[0064] As an optional implementation, the thickness of the connecting convex wall 131 can be adjusted according to actual needs to ensure that it can withstand various loads in the marine environment. The inclination angle of the first connecting ramp can also be optimized according to the design of the fastening assembly 3 to achieve the best connection effect. In addition, the material of the fastening assembly 3 can be selected as a material with corrosion resistance and strength. Of course, those skilled in the art will readily know that, in addition to the material itself, anti-corrosion measures can also be provided on the outside of the fastening assembly 3, such as coating the outer surface with an anti-corrosion coating to adapt to the humid and salty marine environment.

[0065] By setting the connecting convex wall 131 and the first connecting inclined surface, a stable connection between the top plate 13 and the fastening component 3 is achieved. The fastening component 3 presses and fixes the connecting base 2 to the top of the pile foundation 1. This design not only improves the convenience of installation and the reliability of the connection, but also effectively solves the stability and quality problems of welding operations in the marine environment and reduces safety hazards. Compared with related technologies, this solution simplifies the installation process and improves construction efficiency while ensuring connection stability.

[0066] In one exemplary embodiment of this utility model, reference is made to Figures 1 to 3 As shown, the fastening assembly 3 includes a first fastening ring 31, a second fastening ring 32, and a fastener 33. The first fastening ring 31 is sleeved on one side of the connecting base 2. The inner ring side of the second fastening ring 32 forms a second connecting slope, and the inclination angle of the second connecting slope matches that of the first connecting slope. The second fastening ring 32 is fixedly connected to the connecting protrusion 131 through the first and second connecting slopes, achieving a partial fixed connection with the top plate 13. The fastener 33 is used to pass through the corresponding connecting holes on the first fastening ring 31 and the second fastening ring 32, fastening the first fastening ring 31 and the second fastening ring 32 together, and the connecting base 2 is pressed and fixed between the first fastening ring 31 and the second fastening ring 32.

[0067] Specifically, the design of the first fastening ring 31 and the second fastening ring 32 allows the connecting base 2 to be securely fixed to the top of the pile foundation 1 by fasteners 33. The first fastening ring 31 is sleeved on one side of the connecting base 2, and the second fastening ring 32 is adapted to the first connecting inclined surface on the connecting protrusion 131 through the second connecting inclined surface on the inner ring side, thereby achieving a fixed connection with the top plate 13. The fasteners 33 are inserted into the connecting holes of the first fastening ring 31 and the second fastening ring 32, and the first fastening ring 31 and the second fastening ring 32 are pressed together by the fastening connection, so that the connecting base 2 is securely fixed between the first fastening ring 31 and the second fastening ring 32.

[0068] By using the first fastening ring 31, the second fastening ring 32, and the fastener 33, the problem of unstable connections caused by environmental factors such as wind and waves during the installation of offshore photovoltaic (PV) systems is solved. Compared with related technologies, this solution makes the installation of offshore PV systems more convenient, improves the installation efficiency, enhances the stability and wind and wave resistance of the connecting base 2, and reduces the risk of connection loosening or failure due to environmental factors.

[0069] In one exemplary embodiment of this utility model, reference is made to Figures 2 to 8 As shown, the connecting base 2 includes a base plate 22, and the correction mechanism 21 on the connecting base 2 is disposed on one side of the base plate 22. When the second fastening ring 32 is fixedly connected to the connecting protrusion 131 through the first connecting inclined surface and the second connecting inclined surface, the second fastening ring 32 and the side of the top plate 13 away from the pipe pile body 12 form a stepped surface, and the base plate 22 can be fully embedded in the fixed cavity formed by the side of the first fastening ring 31 and the stepped surface. The diameter of the base plate 22 is smaller than the inner ring diameter of the second fastening ring 32 and larger than the inner ring diameter of the first fastening ring 31.

[0070] Specifically, the design of the base plate 22 allows the connecting base 2 to be more stably embedded in the fixing cavity during installation, thereby improving the overall structural stability. The fit between the diameter of the base plate 22 and the inner ring diameters of the second fastening ring 32 and the first fastening ring 31 ensures a tight fit of the base plate 22 within the fixing cavity, further enhancing the reliability of the connection. Furthermore, the correction mechanism 21, located on one side of the base plate 22, provides guidance during installation, ensuring accurate positioning of the connecting base 2 and the pile foundation 1.

[0071] As an alternative implementation, the base plate 22 can be made of high-strength materials to enhance its load-bearing capacity and durability. Simultaneously, the surface of the base plate 22 can be treated with anti-corrosion measures to withstand the humidity and salt spray erosion of the marine environment, extending its service life. Furthermore, the edges of the base plate 22 can be designed with chamfers or rounded corners to reduce stress concentration and improve the structure's fatigue resistance.

[0072] By optimizing the design and installation method of the base plate 22, the problems of inaccurate positioning and unstable connection that easily occur during the installation of offshore photovoltaic (PV) brackets are solved. Through the embedded design of the base plate and the guiding action of the correction mechanism, precise docking and secure connection between the connecting base 2 and the pile foundation 1 are achieved, improving the overall structural stability and safety. Furthermore, the base plate 22 can undergo slight deformation or displacement within the fixing cavity, improving the stability of the fixed connection compared to direct welding. Compared with related technologies, this solution offers higher installation accuracy and connection reliability, effectively addressing the challenges of PV bracket installation in complex offshore environments.

[0073] In one exemplary embodiment of this utility model, reference is made to Figure 2 , Figures 5 to 8 As shown, the correction mechanism 21 includes at least two correction plates 211, which are disposed on one side of the base plate 22 of the connecting base 2, and one side is fixedly connected to the surface of the base plate 22, with the extension direction perpendicular to the plane containing the extension direction of the base plate 22. The at least two correction plates 211 are fixedly connected at their respective central axes to form correction guide feet. When connected, the correction guide feet are inserted into the connection opening 11, and the connecting base 2 is guided and positioned to the installation position of the pile foundation 1 through the waist edges of the at least two correction plates 211 and the connection opening 11.

[0074] The specific shape and size of the alignment plate 211 can be adjusted according to actual needs, such as using a trapezoidal or other polygonal shape. The thickness and material of the alignment plate 211 can also be optimized according to the stress conditions to ensure that it can provide sufficient guidance and positioning effect when inserted into the connecting opening 11.

[0075] Specifically, the design of the guide feet for correcting deviations allows the connecting base 2 to be more accurately positioned to the installation location of the pile foundation 1 during installation, thereby reducing installation errors. Through the cooperation of the waist edges of at least two correcting plates 211 with the connecting opening 11, the connecting base 2 can automatically adjust its position during insertion, ensuring a tighter and more stable connection with the pile foundation 1. Thus, this technical solution effectively solves the installation accuracy problem caused by external factors such as wind and waves in a marine environment, improving installation efficiency and reliability.

[0076] As an alternative implementation, the material of the correction plate 211 can be a material with strong corrosion resistance, such as stainless steel or aluminum alloy, to adapt to the humid and salty environment at sea.

[0077] By optimizing the design of the correction mechanism 21, the problems of installation accuracy and stability in the marine environment were solved, and the connection quality between the connecting base 2 and the pile foundation 1 was improved, thereby ensuring the stability and reliability of the entire photovoltaic support system.

[0078] In one exemplary embodiment of this utility model, reference is made to Figure 5 , Figure 6 and Figure 8 As shown, after the guide foot is inserted into the connection opening 11, the waist edge of at least two guide plates 211 near the base plate 22 is fitted with the edge of the connection opening 11 with a clearance.

[0079] Specifically, the correction guide foot consists of at least two correction plates 211. These correction plates 211 are disposed on one side of the base plate 22 of the connecting base 2, and one side is fixedly connected to the surface of the base plate 22, with the extension direction perpendicular to the plane containing the extension direction of the base plate 22. The at least two correction plates 211 are fixedly connected to each other at their respective central axes to form the correction guide foot. During connection, the correction guide foot is inserted into the connection opening 11, and the connecting base 2 is guided and positioned to the installation position of the pile foundation 1 by the sides of the at least two correction plates 211 and the connection opening 11.

[0080] The design of the guide feet effectively solves the problems of inaccurate positioning and weak connection that may occur when installing photovoltaic brackets in marine environments. Compared with related technologies, this solution not only improves installation efficiency but also significantly enhances the stability and reliability of the connection device, making it suitable for various complex marine environmental conditions.

[0081] In one exemplary embodiment of this utility model, reference is made to Figures 1 to 7 As shown, the connecting base 2 includes a connecting frame 23 and a ball joint 24. The connecting frame 23 is located on the side away from the correction mechanism 21 and is composed of multiple connecting stiffeners 231 radially distributed along the outer edge of the base plate 22. One side of the connecting stiffener 231 is fixedly connected to the surface of the base plate 22, and its extension direction is perpendicular to the plane containing the extension direction of the base plate 22. The ball joint 24 is fixedly connected to the side of the connecting stiffener 231 away from the base plate 22 and is at least partially embedded in the recess formed by the connecting stiffener 231, for welding and fixing multiple photovoltaic support rods 4.

[0082] Specifically, the structural design of the connecting frame 23, with multiple connecting stiffeners 231 radially distributed along the outer edge of the base plate 22, effectively disperses the force on the photovoltaic support rod 4, enhancing the overall structural stability. The ball joint 24 can be a welded ball or a bolted ball. The ball joint 24 and the connecting stiffeners 231 allow the photovoltaic support rod 4 to be fixedly connected to the connecting base 2. Furthermore, the connecting stiffeners 231 are positioned to avoid collisions with the photovoltaic support rod 4. The fixed position of the ball joint 24 is embedded within the recess formed by the connecting stiffeners 231, further improving the weld's strength and stability. The embedded design of the ball joint 24 helps reduce stress concentration during welding, lowering the risk of welding defects.

[0083] As an optional implementation, the outer edge of the connecting stiffener 231 is clearance-fitted with the inner ring edge of the first fastening ring 31 when the connecting base 2 is pressed and fixed between the first fastening ring 31 and the second fastening ring 32. This design allows for construction error, making the connecting base 2 more stable during fixing, improving construction and installation efficiency. It not only enhances the fixing effect of the connecting base 2, but also ensures close contact between the connecting stiffener 231 and the first fastening ring 31, further improving the stability and wave resistance of the overall structure.

[0084] The structural design of the connecting frame 23 and the ball joint 24 solves the problem of unstable welding and fixing of offshore photovoltaic (PV) supports in harsh environments. The radial distribution of the connecting stiffeners 231 and the embedded design of the ball joints 24 effectively disperse the stress, enhance the weld's strength, and reduce the risk of welding defects. Furthermore, the connecting stiffeners 231 can provide a certain degree of elastic deformation, alleviating the stress between the ball joints 24 and the connecting base 2. Compared with related technologies, this solution has significant advantages in improving weld quality and structural stability, and is particularly suitable for the fixed connection of offshore PV supports.

[0085] In one exemplary embodiment of this utility model, reference is made to Figure 3 As shown, when the connecting base 2 is pressed and fixed between the first fastening ring 31 and the second fastening ring 32, the outer edges of the multiple connecting ribs 231 are connected to the inner ring edge of the first fastening ring 31 with a clearance fit.

[0086] Specifically, the connecting base 2 includes a base plate 22 and a connecting frame 23. The connecting frame 23 is composed of multiple connecting stiffeners 231 radially distributed along the outer edge of the base plate 22. One side of the connecting stiffener 231 is fixedly connected to the surface of the base plate 22, and its extension direction is perpendicular to the plane containing the extension direction of the base plate 22. The outer side of the connecting stiffener 231 is fitted with the inner ring edge of the first fastening ring 31 with a clearance fit. This design allows for construction error, making the connecting base 2 more stable when fixed and improving construction and installation efficiency.

[0087] As an optional implementation, the outer edge of the connecting stiffener 231 can be fixedly connected to the inner ring edge of the first fastening ring 31 by welding or bolting to ensure the strength of the connection. Furthermore, the connecting stiffener 231 can be made of a highly corrosion-resistant material to cope with the humid and salty environment at sea, further extending the service life of the connection device.

[0088] By fitting the outer edge of the connecting stiffener 231 with the inner ring edge of the first fastening ring 31 with a clearance, a margin for construction error is allowed while ensuring the stable fixation of the connecting base 2, effectively solving the problem of the impact of the marine environment on welding quality and connection stability. Compared with related technologies, this solution not only improves the reliability of the connection but also reduces welding operation time and safety hazards, demonstrating significant practicality and superiority.

[0089] In one exemplary embodiment of this utility model, this application also proposes a photovoltaic support bracket, which includes a fixing connection device. The fixing connection device includes a pile foundation 1, a connecting base 2, and a fastening assembly 3. A connecting opening 11 is provided at the top of the pile foundation 1. The connecting base 2 includes a correction mechanism 21, which is used to guide and position the connecting base 2 at the installation position on the pile foundation 1 during connection. The fastening assembly 3 is disposed at the connection position between the pile foundation 1 and the connecting base 2, and is partially fixed to the top of the pile foundation 1, thereby pressing and fixing the connecting base 2 to the top of the pile foundation 1 through a fastening connection.

[0090] Specifically, the pile foundation 1 includes a pipe pile body 12, a top plate 13, and a reinforcing plate 14. One end of the pipe pile body 12 is fixed below the sea surface, and the other end extends above the sea surface. The top plate 13 is fixedly installed at the end of the pipe pile body 12 that extends above the sea surface, and a connecting opening 11 is opened in the middle of the top plate 13. The reinforcing plate 14 is installed inside the pipe pile body 12, extending perpendicularly to the plane containing the extending direction of the top plate 13, and one side is fixedly connected to the inner wall surface of the pipe pile body 12, while the adjacent side is fixedly connected to the inner side of the top plate 13. A connecting protrusion 131 is provided on the periphery of the top plate 13, extending perpendicularly to the plane containing the top plate 13, and a first connecting inclined surface is formed on the connecting protrusion 131. The fastening assembly 3 is partially fixedly connected to the top plate 13 through the first connecting inclined surface, and the connecting base 2 is pressed and fixed to the top of the pile foundation 1 by the fastening assembly 3 that is partially fixed to the top plate 13.

[0091] The fastening assembly 3 includes a first fastening ring 31, a second fastening ring 32, and a fastener 33. The first fastening ring 31 is sleeved on one side of the connecting base 2. The inner ring side of the second fastening ring 32 forms a second connecting slope, and the inclination angle of the second connecting slope matches that of the first connecting slope. The second fastening ring 32 is fixedly connected to the connecting protrusion 131 through the first and second connecting slopes, achieving a partial fixed connection with the top plate 13. The fastener 33 is used to pass through the corresponding connecting holes on the first and second fastening rings 31 and 32, fastening the first and second fastening rings 31 and 32 together, and pressing the connecting base 2 between the first and second fastening rings 31 and 32.

[0092] The connecting base 2 includes a base plate 22, and a correction mechanism 21 is disposed on one side of the base plate 22. When the second fastening ring 32 is fixedly connected to the connecting protrusion 131 via the first and second connecting inclined surfaces, the second fastening ring 32 and the side of the top plate 13 away from the pipe pile body 12 form a stepped surface. The base plate 22 can be fully embedded in the fixed cavity formed by the side of the first fastening ring 31 and the stepped surface, and the base plate 22 can undergo slight deformation or displacement within the fixed cavity. Compared with the direct welding connection, this can effectively reduce stress concentration and improve the stability of the fixed connection. The diameter of the base plate 22 is smaller than the inner ring diameter of the second fastening ring 32 and larger than the inner ring diameter of the first fastening ring 31.

[0093] The correction mechanism 21 includes at least two correction plates 211, which are disposed on one side of the base plate 22 of the connecting base 2, and one side is fixedly connected to the surface of the base plate 22, with the extension direction perpendicular to the plane containing the extension direction of the base plate 22. The at least two correction plates 211 are fixedly connected to each other at their respective central axes to form correction guide feet. During connection, the correction guide feet are inserted into the connection opening 11, guiding and positioning the connecting base 2 to the installation position of the pile foundation 1 through the waist edges of the at least two correction plates 211 and the connection opening 11. After the correction guide feet are inserted into the connection opening 11, the portions of the waist edges of the at least two correction plates 211 near the base plate 22 are clearance-fitted with the edge of the connection opening 11.

[0094] The connecting base 2 includes a connecting frame 23 and a ball joint 24. The connecting frame 23 is located on the side away from the correction mechanism 21 and consists of a plurality of connecting stiffeners 231 radially distributed along the outer edge of the base plate 22. One side of the connecting stiffener 231 is fixedly connected to the surface of the base plate 22, and the extending direction is perpendicular to the plane containing the extending direction of the base plate 22. The ball joint 24 is fixedly connected to the side of the connecting stiffener 231 away from the base plate 22 and is at least partially embedded in the recess formed by the connecting stiffener 231 for welding and fixing at least one photovoltaic support rod 4. When the connecting base 2 is pressed and fixed between the first fastening ring 31 and the second fastening ring 32, the outer sides of the plurality of connecting stiffeners 231 are gap-fitted with the inner ring edge of the first fastening ring 31.

[0095] Therefore, the photovoltaic support structure of this invention achieves stable installation in a marine environment through a fixed connection device. The fixed connection device, through the cooperation of the correction mechanism 21 and the fastening component 3, ensures the precise positioning and firm fixation of the connecting base 2 on the pile foundation 1, avoiding weld defects and safety hazards that may occur in a humid and salt spray environment using traditional welding methods. Furthermore, the design of the correction guide foot and the connecting protrusion 131 further improves the installation accuracy and stability, reducing the impact of environmental loads such as wind and waves on the installation process. Therefore, the technical solution of this invention effectively solves the technical problems existing in the installation of marine photovoltaic supports, improving installation efficiency and reliability.

[0096] It should be understood that this invention is not limited to the detailed structure and arrangement of the components proposed in this invention. This invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of this invention. The embodiments described herein illustrate the best known mode for implementing this invention and will enable those skilled in the art to utilize this invention.

Claims

1. A fixing and connecting device for offshore photovoltaic support structures, characterized in that, include: The pile foundation has a connection opening at the top. The connecting base includes a correction mechanism, which is used to insert into the connecting opening during connection to guide and position the connecting base at the installation position of the pile foundation. A fastening assembly is provided at the connection point between the pile foundation and the connecting base, and is partially fixed to the top of the pile foundation; The fastening assembly presses and fixes the connecting base to the top of the pile foundation by a fastening connection, and the photovoltaic bracket of the photovoltaic bracket is fixedly connected to the connecting base.

2. The fixed connection device according to claim 1, characterized in that, The pile foundation includes: The pipe pile body is fixed at one end below the sea surface and extends out of the sea surface at the other end; The top plate is fixedly installed at the end of the pipe pile body that extends out of the sea surface, and the connection opening is opened in the middle of the top plate; A reinforcing plate is disposed inside the pipe pile body, extending in a direction perpendicular to the plane in which the top plate extends, and one side is fixedly connected to the inner wall surface of the pipe pile body, while the adjacent side is fixedly connected to the inner side of the top plate.

3. The fixed connection device according to claim 2, characterized in that, The top plate is provided with a connecting protrusion on its periphery, the extending direction of the connecting protrusion is perpendicular to the plane of the top plate, and a first connecting inclined surface is formed on the connecting protrusion. The fastening assembly is partially fixed to the top plate via the first connecting ramp, and the connecting base is pressed and fixed to the top of the pile foundation by the fastening assembly that is partially fixed to the top plate.

4. The fixed connection device according to claim 3, characterized in that, The fastening assembly includes: The first fastening ring is fitted onto one side of the connecting base; The second fastening ring has a second connecting slope formed on the inner ring side, and the inclination angle of the second connecting slope is adapted to that of the first connecting slope. The second fastening ring is fixedly connected to the connecting protrusion wall through the first connecting slope and the second connecting slope, thereby achieving a partial fixed connection with the top plate. Fasteners are used to pass through the corresponding connecting holes on the first and second fastening rings to fasten the first and second fastening rings together, and the connecting base is pressed and fixed between the first and second fastening rings.

5. The fixed connection device according to claim 4, characterized in that, The connecting base includes a base plate, and the correction mechanism on the connecting base is disposed on one side of the base plate; When the second fastening ring is fixedly connected to the connecting protruding wall through the first connecting inclined surface and the second connecting inclined surface, the second fastening ring and the side of the top plate away from the pipe pile body form a stepped surface, and the bottom plate can be fully embedded in the fixed cavity formed by the side of the first fastening ring and the stepped surface. The diameter of the base plate is smaller than the inner ring diameter of the second fastening ring, but larger than the inner ring diameter of the first fastening ring.

6. The fixed connection device according to claim 1, characterized in that, The correction mechanism includes at least two correction plates, which are disposed on one side of the base plate of the connecting base, and one side is fixedly connected to the surface of the base plate, with the extension direction perpendicular to the plane where the extension direction of the base plate is located. The at least two correction plates are fixedly connected to each other at their respective central axes to form correction guide feet. When connected, the correction guide feet are inserted into the connection opening, and the connection base is guided and positioned to the installation position of the pile foundation through the waist edges of the at least two correction plates and the connection opening.

7. The fixed connection device according to claim 6, characterized in that, After the guide foot is inserted into the connection opening, the waist edges of the at least two guide plates near the base plate are fitted with the edge of the connection opening with a clearance.

8. The fixed connection device according to claim 6, characterized in that, The connecting base includes: The connecting frame is located on the side away from the correction mechanism and is composed of multiple connecting stiffeners that are radially distributed along the outer edge of the base plate. One side of each connecting stiffener is fixedly connected to the surface of the base plate, and the extending direction is perpendicular to the plane where the extending direction of the base plate is located. A ball joint is fixedly connected to the side of the connecting rib plate away from the base plate and is at least partially embedded in the recessed cavity formed by the connecting rib plate, for welding and fixing at least one support rod of a photovoltaic bracket.

9. The fixed connection device according to claim 8, characterized in that, When the connecting base is pressed and fixed between the first fastening ring and the second fastening ring, the outer edges of the plurality of connecting ribs are connected to the inner ring edge of the first fastening ring with a clearance fit.

10. A photovoltaic support structure, characterized in that, Includes the fixed connection device as described in any one of claims 1 to 9.

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