Ground-standing positioning device for pile driving from the pile foundation of offshore photovoltaic systems

Abstract

Ground-standing positioning device for pile driving from the pile foundation of offshore photovoltaic systems, consisting of a frame body structure and four groups of lifting devices for pile clamping, characterized in that that the plane of the frame body structure is rectangular and comprises an upper platform, a lower platform and an anti-sinking plate, which are placed from top to bottom on four corner support legs and two central support legs; wherein the four corners of the upper platform are each connected to a pile clamping platform by an outwardly projecting upper support; wherein the four corners of the lower platform are each connected to a positioning sleeve by an outwardly projecting support, the four positioning sleeves each corresponding to the four pile clamping platforms of the upper platform; The anti-sinking plate is in the form of a horizontal -sign and comprises a pair of longitudinally arranged anti-sink planks, a pair of transversely arranged anti-sink planks and an anti-sink plank which bridges between the centers of the pair of transversely arranged anti-sink planks; wherein a side-slip resistant structure is attached to the bottom surface of all the anti-sink planks, the side-slip resistant structure consisting of two side plates fastened parallel and continuously to the bottom surface of the anti-sink planks, two corresponding base plates which are fastened to the bottom surface of the two side plates, a plurality of inner reinforcing plates which are bridged at intervals between the inner side surfaces of the two side plates and fastened to the bottom surface of the anti-sink planks, and a plurality of pairs of outer reinforcing plates which are fastened between the outer side surfaces of the two side plates and the bottom surface of the anti-sink planks; where four groups of lifting devices for pile clamping are each mounted on four pile clamping platforms of the upper platform.

Description

Technical area

[0001] The utility model relates to a ground-standing positioning device for driving piles from the pile foundation of offshore photovoltaic systems. Background technology

[0002] With the ever-growing global demand for renewable energy, offshore photovoltaics is gaining increasing attention as an emerging clean energy technology. Offshore photovoltaics boasts abundant resources due to the vast ocean areas and intense solar radiation, especially in coastal areas, offering enormous potential for the development of this technology. Offshore photovoltaic projects construct solar systems in coastal marine areas and mudflats, effectively utilizing extensive marine resources, reducing the use of land resources, and minimizing environmental impact. Offshore photovoltaic systems are divided into fixed and floating systems.The permanently installed systems are based on pile foundations at sea and are characterized by high stability, strong resistance to wind and waves, and easy maintenance, while avoiding the use of land resources.

[0003] Currently, the main focus and challenges in the construction of offshore photovoltaic systems lie in the high accuracy requirements regarding the positioning and elevation of the pile foundations. Typically, the foundation of a single PV unit consists of four steel tubular piles connected in a rectangular array by central connecting axes. To ensure smooth pile installation, controlling the installation accuracy of the pile foundations represents a significant technical challenge. Conventional pile-driving vessels use a single-positioning method for driving piles. However, due to the complex maritime climate and working conditions at sea, significant deviations in the relative positioning of the pile foundation groups within an array can occur.Therefore, conventional on-water piling methods do not adequately meet the accuracy requirements, which is why reliable containment measures are required to ensure precise pile positioning. Content of the utility model

[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art and to provide a ground-based positioning device for piling from the pile foundation of offshore photovoltaic systems, which rests stably on the seabed, reduces the effects of surf on the sinking of the steel pipe piles, and can precisely control the sinking depth of the steel pipe piles.

[0005] A technical solution for realising the purpose of the present utility model is: a ground-based positioning device for piling from the pile foundation of offshore photovoltaic systems, consisting of a frame body structure and four groups of lifting devices for pile clamping, that the plane of the frame body structure is rectangular and comprises an upper platform, a lower platform and an anti-sinking plate, which are placed from top to bottom on four corner support legs and two central support legs; wherein the four corners of the upper platform are each connected to a pile clamping platform by an outwardly projecting upper support; wherein the four corners of the lower platform are each connected to a positioning sleeve by an outwardly projecting support, the four positioning sleeves each corresponding to the four pile clamping platforms of the upper platform; The anti-sinking plate is in the form of a horizontal -sign and comprises a pair of longitudinally arranged anti-sink planks, a pair of transversely arranged anti-sink planks and an anti-sink plank which bridges between the centers of the pair of transversely arranged anti-sink planks; wherein a side-slip resistant structure is attached to the bottom surface of all the anti-sink planks, the side-slip resistant structure consisting of two side plates fastened parallel and continuously to the bottom surface of the anti-sink planks, two corresponding base plates which are fastened to the bottom surface of the two side plates, a plurality of inner reinforcing plates which are bridged at intervals between the inner side surfaces of the two side plates and fastened to the bottom surface of the anti-sink planks and a plurality of pairs of outer reinforcing plates which are fastened between the outer side surfaces of the two side plates and the bottom surface of the anti-sink planks. where four groups of lifting devices for pile clamping are each mounted on four pile clamping platforms of the upper platform.

[0006] In the above-mentioned ground-based positioning device for pile driving from the pile foundation of offshore photovoltaic systems, the upper platform comprises a rectangular outer frame consisting of a pair of outer longitudinal rods and a pair of outer cross rods, a plurality of inner cross rods spanned between the pair of outer longitudinal rods, and a plurality of inner longitudinal rods spanned between the pair of outer cross rods; the structure of the lower platform corresponds to the structure of the upper platform.

[0007] In the above-mentioned ground-based positioning device for pile driving from the pile foundation of offshore photovoltaic systems, each positioning sleeve comprises a straight cylinder connected to the outer end of the support and an inverted conical cylinder coaxially connected to the top of the straight cylinder.

[0008] In the above-mentioned floor-standing positioning device for pile driving from the pile foundation of offshore photovoltaic systems, several water outlet openings are evenly distributed on all subsidence protection planks.

[0009] In the above-mentioned ground-based positioning device for pile driving from the pile foundation of offshore photovoltaic systems, the inner reinforcement plate is arched; the outer reinforcement plate is rectangular-triangular or inverted L-shaped.

[0010] In the above-mentioned ground-based positioning device for piling from the pile foundation of offshore photovoltaic systems, a lifting eye is attached to each of the four corners of the upper platform.

[0011] The ground-based positioning device for pile driving from the pile foundation of offshore photovoltaic systems in the present utility model has the following features: 1. The use of a side-slip-resistant structure ensures that the positioning device rests stably on the seabed. In adverse weather conditions and heavy waves, the side-slip-resistant structure can limit the slippage of the positioning device, mitigate the impact of waves on the installation of the steel pipe piles, and significantly reduce the sway of the steel pipe piles during lifting, thus significantly increasing the safety of the lifting operations of the steel pipe piles. At the same time, the piling accuracy of the piles is effectively controlled and the integrity of the piling is ensured. 2. By fine-tuning the position of each steel pipe pile using each group of the pile clamping jack, the position of the four foundation piles of a PV unit can be precisely restricted. This increases the relative positioning accuracy of the four foundation piles of each PV unit and ensures a more precise pile foundation position for the subsequent installation of the PV rack. 3. It is possible to install four foundation piles simultaneously, reducing the time lost due to switching between work steps. This significantly saves construction time and accelerates production progress. 4. It can provide an effective working platform for surveying work and use various surveying instruments in combination to increase measurement accuracy. Illustration of the attached drawings Fig. 1 shows a front view of the ground-based positioning device for driving piles from the pile foundation of offshore photovoltaic systems in the present utility model; Fig. 2 shows a plan view of the upper platform of the floor-standing positioning device in the present utility model; Fig. 3 shows a plan view of the sub-platform of the floor-standing positioning device in the present utility model; Fig. 4 shows a plan view of the anti-sinking plate of the floor-standing positioning device in the present utility model; Fig. 5 shows the view along the line AA in Fig. 4; Fig. 6 shows a front view of the small diameter positioning sleeve of the floor-standing positioning device in the present utility model; Fig. 7 shows a front view of the ground-standing positioning device in the present utility model during pile driving work. Specific embodiments

[0012] The present utility model is described in more detail below with reference to the attached drawings.

[0013] With reference to Fig. 1 to Fig. 7, the utility model discloses a ground-standing positioning device for driving piles from the pile foundation of offshore photovoltaic systems, consisting of a frame body structure and four groups of lifting devices for pile clamping 5.

[0014] The plane of the frame body structure is rectangular and comprises an upper platform 2, a lower platform 3 and an anti-sinking plate 4, which are placed from top to bottom on four corner support legs 11 and two middle support legs 12; where

[0015] The upper platform 2 comprises a rectangular outer frame consisting of a pair of outer longitudinal rods 21 and a pair of outer cross rods 22, a plurality of inner cross rods 23 spanned between the pair of outer longitudinal rods 21, and a plurality of inner longitudinal rods 24 spanned between the pair of outer cross rods 22; wherein the four corners of the upper platform 2 are each connected to a pile clamping platform 2A by an outwardly projecting upper support 2B; wherein the plane of each pile clamping platform 2A is U-shaped; wherein the distance between the centers of the four pile clamping platforms 2A is matched to the distance between the centers of the four foundation piles of a PV unit; wherein a lifting eye 25 is mounted at each of the four corners of the upper platform 2, which serves for lifting and placing the positioning device on the seabed by a lifting vessel.

[0016] The structure of the lower platform 3 corresponds to the structure of the upper platform 2, wherein the four corners of the lower platform 3 are each connected to a positioning sleeve 3A by an outwardly projecting lower support 3B, wherein the four positioning sleeves 3A respectively correspond to the four pile clamping platforms 2A of the upper platform 2; wherein each positioning sleeve 3A comprises a straight cylinder 31 connected to the outer end of the lower support 3B and an inverted conical cylinder 32 coaxially connected to the top of the straight cylinder 31; wherein the inverted conical cylinder 32 serves to insert the steel pipe pile 6 from top to bottom into the straight cylinder 31.

[0017] The anti-sinking plate 4 is in the form of a horizontal -sign and comprises a pair of longitudinally arranged anti-sinking planks 40, a pair of transversely arranged anti-sinking planks 40 and an anti-sinking plank 40 which bridges between the centers of the pair of transversely arranged anti-sinking planks 40; wherein on all anti-sinking planks 40 a plurality of water passage openings 400 are arranged evenly distributed; wherein a side-slip-resistant structure 4A is attached to the bottom surface of all anti-sinking planks 40.

[0018] The side-slip-resistant structure 4A consists of two side plates 41, two bottom plates 42, several inner reinforcement plates 43 and several pairs of outer reinforcement plates 44;wherein two side plates 41 are fastened parallel and continuously to the bottom surface of the anti-sinking planks 40, wherein two corresponding base plates 42 are fastened to the bottom surface of the two side plates 41, wherein a plurality of inner reinforcement plates 43 are arranged at intervals between the inner side surfaces of the two side plates 41 and fastened to the bottom surface of the anti-sinking planks 40, wherein the bottom surface of the inner reinforcement plates 43 is arc-shaped, wherein a plurality of pairs of outer reinforcement plates 44 are fastened between the outer side surfaces of the two side plates 41 and the bottom surface of the anti-sinking planks 40, corresponding to the inner reinforcement plates 43, wherein the outer reinforcement plates 44 have a right-angled triangular or inverted L-shape.;

[0019] Four groups of pile clamping lifting devices 5 are each mounted correspondingly on four pile clamping platforms 2A of the upper platform 2, wherein each group of pile clamping lifting devices 5 is formed by four pile clamping lifting devices, wherein four pile clamping lifting devices are arranged at an angle of 90° to each other.

[0020] The ground-based positioning device for driving piles from the pile foundation of offshore photovoltaic systems in the present utility model includes the following steps in operation: surveying the seabed → leveling the foundation → measurement and positioning → placement of the ground-based positioning device → successive driving of the four piles of the PV unit.

[0021] When installing the four pile foundations for the PV unit, a steel pipe pile is first lifted over the positioning device and aligned with a pile clamping platform 2A. The steel pipe pile 6 is then lowered so that this steel pipe pile 6 is inserted into the pile clamping platform 2A and the corresponding positioning sleeve 3A. The steel pipe pile 6 is then unhooked, allowing it to penetrate the seabed under its own weight. The position of the steel pipe pile 6 is then finely adjusted using a group of pile clamping jacks 5. Finally, the steel pipe pile 6 is sunk into the seabed to the specified depth using a vibrating hammer. The remaining three steel pipe piles are sunk one after the other in the same way.

[0022] The ground-based positioning device for driving piles from the pile foundation of offshore photovoltaic systems in the present utility model not only enables fine adjustment of the steel pipe piles using a group of jacks for pile clamping, but also adds a side-slip resistant structure to the bottom of the anti-sinking plate. This allows the positioning device to be stably positioned on the seabed. In adverse weather conditions and heavy waves, the side-slip resistant structure can limit the displacement of the positioning device, reduce the impact of waves on the installation of the steel pipe piles, limit the piling position of the four steel pipe piles of a PV unit, and significantly reduce the sway of the steel pipe piles during lifting, thus significantly improving the safety of the steel pipe pile lifting operations.At the same time, the construction accuracy of the piles is effectively controlled and the integrity of the pile driving is ensured.

[0023] The ground-based positioning device for driving pile foundations for offshore photovoltaic systems in the present utility model allows for the simultaneous installation of four foundation piles, thus reducing the time lost due to switching between work steps. This significantly saves construction time and accelerates production progress.

[0024] The ground-based positioning device for driving piles from the pile foundation of offshore photovoltaic systems in the present utility model also allows the installation of steel pipe piles of two different diameters. If a small-diameter steel pipe pile is to be driven, an internal positioning sleeve 30 is inserted into each of the four positioning sleeves 3A of the sub-platform 3. The internal positioning sleeve 30 also comprises a straight cylinder 31 and an inverted conical cylinder 32, with six reinforcing plates 33 evenly arranged and secured around the circumference between the outer surface of the straight cylinder 31 and the inverted conical cylinder 32. The outer diameter of the six reinforcing plates 33 is adapted to the inner diameter of the straight cylinder 31 of the positioning sleeve 3A.

[0025] The ground-based positioning device for pile driving from the pile foundation of offshore photovoltaic systems in the present utility model can further provide an effective working platform for surveying work and use various surveying instruments in combination to increase measurement accuracy.

[0026] The above-mentioned embodiments serve merely to illustrate the present utility model and do not constitute a limitation thereof. Those skilled in the relevant technical field may make various modifications or changes without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions should also fall within the scope of this utility model and be defined by the respective claims.

Claims

[1] Ground-based positioning device for pile driving from the pile foundation in offshore photovoltaic plants, consisting of a frame structure and four groups of lifting devices for pile clamping, characterized by , that the plane of the frame structure is rectangular and comprises an upper platform, a lower platform and a sinkage protection plate, which are placed from top to bottom on four corner support legs and two middle support legs; wherein the four corners of the upper platform are each connected to a pile clamping platform by an outwardly projecting upper support; wherein the four corners of the lower platform are each connected to a positioning sleeve by an outwardly projecting support, the four positioning sleeves each corresponding to the four pile clamping platforms of the upper platform; the anti-sinking plate is in the form of a horizontal -sign is executed and comprises a pair of longitudinally arranged anti-sinking barriers, a pair of transversely arranged anti-sinking barriers, and an anti-sinking barrier that bridges between the midpoints of the pair of transversely arranged anti-sinking barriers; wherein a laterally anti-slip structure is attached to the bottom surface of all anti-sinking barriers, the laterally anti-slip structure consisting of two parallel and continuous side plates attached to the bottom surface of the anti-sinking barriers, two correspondingly corresponding bottom plates attached to the bottom surface of the two side plates, several internal reinforcing plates bridged at intervals between the inner side surfaces of the two side plates and attached to the bottom surface of the anti-sinking barriers, and several pairs of external reinforcing plates attached between the outer side surfaces of the two side plates and the bottom surface of the anti-sinking barriers; wherein four groups of lifting devices for pile clamping are each mounted on four pile clamping platforms of the upper platform. [2] Ground-mounted positioning device for pile driving from the pile foundation in offshore photovoltaic plants according to claim 1, characterized by , that the upper platform comprises a rectangular outer frame consisting of a pair of outer longitudinal bars and a pair of outer transverse bars, several inner transverse bars spanned between the pair of outer longitudinal bars, and several inner longitudinal bars spanned between the pair of outer transverse bars; wherein the structure of the lower platform corresponds to the structure of the upper platform. [3] Ground-mounted positioning device for pile driving from the pile foundation in offshore photovoltaic plants according to claim 1, characterized by, that each positioning sleeve comprises a straight cylinder connected to the outer end of the support and an inverted conical cylinder connected coaxially to the top of the straight cylinder. [4] Ground-mounted positioning device for pile driving from the pile foundation in offshore photovoltaic plants according to claim 1, characterized by that several water drainage openings are evenly distributed on each of the sinkhole protection planks. [5] Ground-mounted positioning device for pile driving from the pile foundation in offshore photovoltaic plants according to claim 1, characterized by , that the inner reinforcing plate is curved; wherein the outer reinforcing plate is rectangular or in an inverted L-shape. [6] Ground-mounted positioning device for pile driving from the pile foundation in offshore photovoltaic plants according to claim 1, characterized bythat a lifting eye is attached to each of the four corners of the upper platform.

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