Construction platform for offshore wind power foundations

Abstract

The utility model discloses a construction platform for offshore wind power foundation, including lower module, upper module and four auxiliary piles. Lower module includes four lower sleeves, lower module upper layer structure, lower module lower layer structure, four anti -sinking boards, the top of four lower sleeves each fixedly sheathed one anti -sinking board, lower module upper layer structure includes upper layer frame and lower module walkway, and lower module lower layer structure includes lower layer frame and four small platforms, and four anti -sinking boards fixedly sheathed in the lower part of four lower sleeves, and upper module includes four upper sleeves, upper module upper layer platform and upper module lower layer platform, and the bottom of four upper sleeves each fixedly sheathed one upper flange plate, and upper module upper layer platform and lower layer platform each fixed in the upper and lower part of four upper sleeves, and four upper flange plates of upper module and four lower flange plates of lower module are through high -strength bolt butt joint, and four auxiliary piles are inserted into the seabed after passing four upper and lower sleeves in proper order. The utility model discloses can be combined flexibly according to the water depth of different sea areas.

Description

Technical Field

[0001] This utility model relates to a construction platform for offshore wind power foundations. Background Technology

[0002] With the rapid development of offshore wind power, construction platforms, as crucial facilities for wind turbine foundation construction, have a significant impact on construction efficiency, safety, and cost control due to their structural form and construction methods. Traditional integrated construction platforms are bulky, require high lifting capacity from construction vessels, and are difficult to adapt to varying water depths and complex sea conditions, limiting their application in certain marine areas. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a construction platform for offshore wind power foundations. It adopts a split upper and lower structure design, which can be flexibly combined according to different water depths, reducing the requirements for the lifting capacity of construction vessels and improving construction efficiency and safety.

[0004] The purpose of this utility model is achieved as follows: a construction platform for offshore wind power foundations, comprising a lower module, an upper module, and four auxiliary piles; The lower module includes four lower sleeves, an upper structure of the lower module, a lower structure of the lower module, and four anti-sinking plates; wherein... The center lines of the four lower sleeves are arranged in a rectangle, and each of the four lower sleeves has a lower flange plate fixedly fitted to its top. The upper structure of the lower module includes an upper frame and a lower module walkway; the upper frame is rectangular and fits the rectangle formed by connecting the centers of the four lower sleeves, and the upper frame is connected between the upper parts of the four lower sleeves; the lower module walkway is connected to the inner side of the upper frame. The lower module's lower structure includes a lower frame and four small platforms; the lower frame is rectangular and fits the rectangle formed by connecting the centers of the four lower sleeves, and the lower frame is connected between the lower parts of the four lower sleeves; the small platforms are rectangular, and the four small platforms are connected one-to-one to the two ends of the two long sides of the lower frame; the length of the lower frame plus the length of the two small platforms equals the width of the lower frame; The four anti-sinking plates are fixedly fitted to the lower part of the four lower sleeves and located below the lower structure of the lower module. The upper module includes four upper sleeves, an upper platform, and a lower platform; wherein... The rectangle formed by the center line of the four upper sleeves is matched with the rectangle formed by the center line of the four lower sleeves, and each of the four upper sleeves has an upper flange plate fixedly fitted at the bottom. The upper platform of the upper module is square and its length and width are equal to the width of the lower frame; the upper platform of the upper module is fixed to the upper part of the four upper sleeves; The lower platform of the upper module is a square with the same shape and size as the upper platform of the upper module; the lower platform of the upper module is fixed to the lower part of the four upper sleeves; The four upper sleeves of the upper module are connected to the four lower flanges of the lower module one by one through the upper flange plates, and are locked with high-strength bolts. Four auxiliary piles are inserted into the seabed one by one through four upper sleeves and four lower sleeves, so that the top of each auxiliary pile protrudes from the top of the upper sleeve.

[0005] The aforementioned construction platform for offshore wind power foundations includes a lower frame connected to an upper frame by four figure-eight diagonal braces; the upper frame contains a transverse connecting rod and two sets of X-shaped connecting rods; both the lower frame and the small platform are truss structures.

[0006] The aforementioned construction platform for offshore wind power foundations is wherein the upper platform of the upper module and the lower platform of the upper module are connected as one unit by multiple straight struts and multiple diagonal struts.

[0007] The aforementioned construction platform for offshore wind power foundations includes railings around the upper platform of the upper module.

[0008] The features of this utility model for the construction platform of offshore wind power foundations are:

[0009] 1. It adopts a split structure design of upper and lower modules, which can be flexibly combined according to different sea depths; 2. The connection between the upper and lower modules adopts a high-strength bolt connection method, which not only facilitates disassembly and reuse, but also reduces the requirements for the lifting capacity of the construction vessel; 3. It can be used as a rock-embedded platform or a driven guide platform for four-pile guide frames with different root openings, thereby improving construction efficiency and safety. Attached Figure Description

[0010] Figure 1 This is a perspective view of the construction platform for offshore wind power foundations according to this utility model; Figure 2 This is an elevation view of the construction platform for offshore wind power foundations according to this utility model; Figure 3 This is a plan view of the upper structure of the lower module in the construction platform of this utility model; Figure 4 This is a plan view of the lower module of the construction platform of this utility model; Figure 5This is a plan view of the upper platform of the upper module in the construction platform of this utility model; Figure 6 This is a plan view of the upper module and the lower platform in the construction platform of this utility model. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Please see Figures 1 to 6 The present invention relates to a construction platform for offshore wind power foundations, comprising a lower module 1, an upper module 2, and four auxiliary piles 3.

[0013] The lower module 1 includes four lower sleeves 11, an upper structure 1A, a lower structure 1B, and four anti-sinking plates 17; wherein, The center lines of the four lower sleeves 11 are arranged in a rectangular pattern, and each of the four lower sleeves 11 has a lower flange plate 12 fixedly mounted on its top. The upper structure 1A of the lower module includes an upper frame 13 and a lower module walkway 14; the upper frame 13 is rectangular and fits the rectangle formed by connecting the centers of the four lower sleeves 11; a transverse connecting rod 131 and two sets of X-shaped connecting rods 132 are provided inside the upper frame 13; the upper frame 13 is connected between the upper parts of the four lower sleeves 11; the lower module walkway 14 is connected to the inner side of the upper frame 13. The lower module's lower structure 1B includes a lower frame 15 and four small platforms 16. The lower frame 15 is rectangular and fits the rectangle formed by connecting the centers of the four lower sleeves 11. The lower frame 15 is a truss structure and is connected between the lower parts of the four lower sleeves 11. The small platforms 16 are rectangular and are truss structures. The four small platforms 16 are connected one-to-one to the two ends of the two long sides of the lower frame 15. The length of the lower frame 15 plus the length of the two small platforms 16 equals the width of the lower frame 15. The lower frame 15 and the upper frame 13 are connected as one unit by four sets of V-shaped diagonal braces 18. The four anti-sinking plates 17 are fixedly fitted to the lower part of the four lower sleeves 11 and located below the lower structure of the lower module.

[0014] Upper module 2 includes four upper sleeves 21, an upper platform 23, and a lower platform 25; wherein, The rectangle formed by the center line of the four upper sleeves 21 is adapted to the rectangle formed by the center line of the four lower sleeves 11, and each of the four upper sleeves 21 has an upper flange plate 22 fixedly fitted at the bottom. The upper platform of the upper module is square and its length and width are equal to the width of the lower frame 15; the upper platform 23 of the upper module is fixed to the upper part of the four upper sleeves 21; railings 24 are provided around the upper platform 23 of the upper module. The lower platform 25 of the upper module is a square with the same shape and size as the upper platform 23 of the upper module; the lower platform 25 of the upper module is fixed to the lower part of the four upper sleeves 21; The upper platform 23 of the upper module and the lower platform 25 of the upper module are connected as one unit by multiple straight struts 26 and multiple diagonal struts 27.

[0015] The four upper sleeves 21 of the upper module 2 are connected to the four lower flanges 12 of the lower module 1 one by one through the upper flanges 22, and are locked with high-strength bolts.

[0016] Four auxiliary piles 3 are inserted into the seabed after passing through four lower sleeves 21 and four lower sleeves 11 in a one-to-one correspondence, so that the top of each auxiliary pile 3 protrudes from the top of the upper sleeve 21. The top of each auxiliary pile 3 is conical, which facilitates the smooth and precise fitting of the upper module 2.

[0017] Several sets of upper pile insertion pipes 32 are evenly distributed on the upper module 2 according to the root opening size of the pile foundation. The outer surface of each upper pile insertion pipe 3 is provided with diagonal support between the bottom surface of the upper platform 23 and the bottom surface of the lower platform 25 of the upper module. Several sets of lower pile insertion limiting pipes 31 are also set in the four small platforms 16 of the lower module 1, corresponding one-to-one with the several sets of upper pile insertion limiting pipes 32 on the upper module 2. The upper pile insertion limiting pipes 32 and lower pile insertion limiting pipes 31 are used for driving engineering piles.

[0018] The construction platform for offshore wind power foundations of this utility model is first transported to the offshore construction site by a transport barge. A crane vessel then lifts the lower module 1 to the pile position and sinks the lower module 1 until it is supported by four anti-sinking plates 17, serving as a positioning platform for four auxiliary piles 3. Next, the four auxiliary piles 3 are driven into the seabed to a certain depth one by one through four lower sleeves 11. Then, the crane vessel lifts the upper module 2 above the four auxiliary piles 3, and the four upper sleeves 21 of the upper module 2 are fitted onto the four auxiliary piles 3 one by one until the four upper flange plates 22 contact the four lower flange plates 12. Workers use high-strength bolts to lock each upper flange plate 22 to the corresponding lower flange plate 12 on the lower module's walkway 14.

[0019] This utility model discloses a construction platform for offshore wind power foundations. The upper module 2 has a planar dimension of 39.2m × 39m and weighs approximately 600t. The lower frame 15 of the lower module 1 has a planar dimension of 22.5m × 39m, and the lower module 1 plus four auxiliary piles 3 weighs approximately 500t. The auxiliary piles 3 and the lower module 1 are integrated for transfer and hoisting, while the upper module 2 is transferred and hoisted separately, meeting the hoisting requirements of general crane vessels.

[0020] The construction platform for offshore wind power foundations of this utility model also includes a heightening module, which includes four heightening sleeves. Each heightening sleeve has a flange plate fixed at both ends and can be connected between the upper flange plate 22 and the lower flange plate 12 to correspond to different water depths.

[0021] This utility model relates to a construction platform for offshore wind power foundations. The upper module upper platform 23 is a construction operation platform. It can be used as a construction operation platform for single pile foundation rock-socketed piles, as well as a positioning platform for driven three-pile jackets and four-pile jackets. The positions of the upper pile-insertion limiting pipe 32 and the lower pile-insertion limiting pipe 31 can be locally adjusted according to the root opening requirements of the jacket. It can be used as a rock-socketed platform or a driven guide platform for four-pile jackets with different root openings.

[0022] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A construction platform for offshore wind power foundations, comprising a lower module, an upper module, and four auxiliary piles; characterized in that, The lower module includes four lower sleeves, an upper structure of the lower module, a lower structure of the lower module, and four anti-sinking plates; wherein... The center lines of the four lower sleeves are arranged in a rectangle, and each of the four lower sleeves has a lower flange plate fixedly fitted to its top. The upper structure of the lower module includes an upper frame and a lower module walkway; the upper frame is rectangular and fits the rectangle formed by connecting the centers of the four lower sleeves, and the upper frame is connected between the upper parts of the four lower sleeves; the lower module walkway is connected to the inner side of the upper frame. The lower module's lower structure includes a lower frame and four small platforms; the lower frame is rectangular and fits the rectangle formed by connecting the centers of the four lower sleeves, and the lower frame is connected between the lower parts of the four lower sleeves; the small platforms are rectangular, and the four small platforms are connected one-to-one to the two ends of the two long sides of the lower frame; the length of the lower frame plus the length of the two small platforms equals the width of the lower frame; The four anti-sinking plates are fixedly fitted to the lower part of the four lower sleeves and located below the lower structure of the lower module. The upper module includes four upper sleeves, an upper platform, and a lower platform; wherein... The rectangle formed by the center line of the four upper sleeves is matched with the rectangle formed by the center line of the four lower sleeves, and each of the four upper sleeves has an upper flange plate fixedly fitted at the bottom. The upper platform of the upper module is square and its length and width are equal to the width of the lower frame; the upper platform of the upper module is fixed to the upper part of the four upper sleeves; The lower platform of the upper module is a square with the same shape and size as the upper platform of the upper module; the lower platform of the upper module is fixed to the lower part of the four upper sleeves; The four upper sleeves of the upper module are connected to the four lower flanges of the lower module one by one through the upper flange plates, and are locked with high-strength bolts. Four auxiliary piles are inserted into the seabed one by one through four upper sleeves and four lower sleeves, so that the top of each auxiliary pile protrudes from the top of the upper sleeve.

2. The construction platform for offshore wind power foundations according to claim 1, characterized in that, The lower frame and the upper frame are connected as one unit by four figure-eight diagonal braces; the upper frame is provided with a horizontal connecting rod and two sets of X-shaped connecting rods; both the lower frame and the small platform are truss structures.

3. The construction platform for offshore wind power foundations according to claim 1, characterized in that, The upper platform of the upper module and the lower platform of the upper module are connected as one unit by multiple straight struts and multiple diagonal struts.

4. The construction platform for offshore wind power foundations according to claim 1 or 3, characterized in that, The upper platform of the upper module is surrounded by railings.

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