Helicopter platform and vessel

Abstract

The application relates to a helicopter platform and a ship, the helicopter platform is arranged on a deck of the ship and is used for taking off and landing, parking and mooring of a helicopter, and the helicopter platform comprises a first supporting platform, a second supporting platform, a reinforcing structure, a supporting structure and a drainage system, wherein the first supporting platform is polygonal, the number of outer sides is greater than or equal to twelve, adjacent outer side vertices are provided with arc transition zones, and the first supporting platform comprises a plurality of first supporting units which are detachable and are in sealed connection; the second supporting platform is polygonal, the number of outer sides is greater than or equal to twelve, adjacent outer side vertices are provided with arc transition zones, and the second supporting platform comprises a plurality of second supporting units which are detachable and are in sealed connection; the reinforcing structure is a grid-shaped supporting structure and is arranged between the first supporting platform and the second supporting platform; the supporting structure is arranged on the lower surface of the second supporting platform; the safety guardrail is arranged along the periphery of the first supporting platform; and the drainage system is arranged along the periphery of the first supporting platform. The application has the advantages of convenient polygonal machining and uniform stress of an approximate circle, and has high modularization degree, so that the helicopter platform is convenient to manufacture, transport, install and maintain.

Description

Technical Field

[0001] This invention relates to the field of large ship helicopter platform technology, and more specifically, to a helicopter platform and a ship. Background Technology

[0002] Currently, the mainstream form of large ship helicopter platforms is the circular platform. The circular platform is one of the earliest and most widely used forms. Its main outline is circular or nearly circular, typically composed of curved panels, annular reinforcing ribs, and radial support structures. The main advantages of a circular platform are: a smooth, continuous outline, good aerodynamic performance; relatively uniform stress distribution, no sharp corners; and easy identification of the platform's center from the air by the pilot. Problems and drawbacks of circular platforms include: 1. The curved panels, annular reinforcing ribs, and curved side beams of a circular platform require CNC cutting or contour cutting, resulting in long cutting paths, low material utilization, and numerous processing steps. For large platforms, the fabrication, forming, and welding of curved components are difficult, significantly increasing construction costs and time. 2. Circular platforms are difficult to divide into regular standard modules radially or circumferentially; the shapes and sizes of each module are inconsistent, leading to low standardization in manufacturing and installation, which is detrimental to mass production and rapid on-site assembly. 3. Navigation lights, communication equipment, mooring points, personnel passages, drainage ditches, etc., need to be arranged along the curved edge. The equipment installation bases require special design, and the drainage ditches need to be made into a ring shape, making construction complex. Moreover, the drainage slope of the curved section is difficult to control precisely, which can easily cause local water accumulation. 4. Curved guardrails require straight pipes to be bent into shape, which is difficult and costly to process. In addition, the folding mechanism of curved guardrails is complex to design. Summary of the Invention

[0003] This application provides a helicopter platform and a vessel that achieves superior technical performance in terms of manufacturing, equipment layout, structural stress, drainage performance, visual positioning, and aerodynamic performance.

[0004] This application provides a helicopter platform, installed on a ship's deck, for helicopter take-off, landing, parking, and mooring, comprising: a first support platform, polygonal in shape, the number of outer sides of the polygon being greater than or equal to twelve, with an arc transition area at the vertices of any two adjacent outer sides, including multiple first support units, the multiple first support units being detachable and sealed together; a second support platform, located below the first support platform, polygonal in shape, the number of outer sides of the polygon being greater than or equal to twelve, with an arc transition area at the vertices of any two adjacent outer sides, multiple second support units, the multiple second support units being detachable and sealed together; a reinforcing structure, a grid-like support structure, disposed between the first support platform and the second support platform; a support structure disposed on the lower surface of the second support platform; a safety railing disposed along the perimeter of the first support platform; and a drainage system disposed along the perimeter of the first support platform.

[0005] In some alternative embodiments, the projection of the first support platform onto the second support platform coincides with the second support platform.

[0006] In some optional embodiments, the lengths of the outer sides of the first support platform are equal, the lengths of the outer sides of the second support platform are equal, and the lengths of the outer sides of the first support platform are respectively equal to the lengths of the outer sides of the first support platform.

[0007] In some alternative embodiments, the plurality of outer sides of the first support platform are at least partially of unequal length, and the plurality of outer sides of the second support platform are at least partially of unequal length.

[0008] In some optional embodiments, the drainage system includes multiple drainage ditches, drainage channels, and drainage pipes. The drainage ditches extend along the outer side of the first support platform and include multiple straight drainage segments extending along the outer side of the first support platform. The drainage channels are located at the apex of the first support platform, and the drainage pipes are connected to the drainage channels. Each of the straight drainage segments has a preset slope along its length.

[0009] In some optional embodiments, each of the straight drainage sections has a preset slope of 0.5% to 1% along its length to guide water flow toward the drainage trough.

[0010] In some optional embodiments, each of the first support units is fan-shaped, with the radius sides of any two adjacent fan shapes abutting each other, a sealing gasket provided between the radius sides of one fan shape and the radius sides of the other fan shape, and side beams provided on any two adjacent radius sides of the fan shapes, with flange plates provided on the side beams, and any two adjacent flange plates being fixedly connected by bolts.

[0011] In some alternative embodiments, the reinforcing structure includes a plurality of triangular support frames, which are interconnected to form a grid-like support structure.

[0012] In some optional embodiments, the support structure includes a plurality of triangular and / or quadrilateral frames arranged circumferentially along the second support platform. The frames are connected to the second support platform by welding or high-strength bolts and fixed to the ship deck by pre-embedded bolts, welding or flange connections.

[0013] On the other hand, this application also provides a vessel including any of the helicopter platforms mentioned above.

[0014] Compared with the prior art, the present invention has the following technical advantages: The first and second support platforms each have at least twelve outer sides. This allows the platform outline to retain the advantages of polygonal straight sides for easy cutting, processing, and modularization, while being closer to a circle than polygons with fewer sides such as hexagons. The increased number of sides and vertices provides more equipment installation locations and mooring points, facilitating the placement of complex equipment such as navigation lights, communication equipment, and personnel access. At the same time, it makes the load distribution more uniform, reduces local stress concentration, improves the overall stress performance of the platform, and provides pilots with more continuous and clearer visual references. A circular arc transition zone is set at the vertices of any two adjacent outer edges to avoid stress concentration caused by sharp corners, reduce the peak stress in the vertex area, and improve the platform's durability and safety under the dynamic load of helicopter take-off and landing. The first support platform is composed of multiple detachable and sealed first support units, and the second support platform is composed of multiple detachable and sealed second support units. This significantly improves the modularity of the platform, making it easier to manufacture, transport, hoist and assemble in sections, and reducing construction difficulty and cycle. The detachable connection facilitates later maintenance and replacement of individual support units, reducing maintenance costs. The sealed connection ensures the watertightness of the platform in the marine environment, preventing rainwater or seawater from seeping into the platform. The reinforced structure is a grid-like support structure, which is set between the first support platform and the second support platform. This effectively improves the overall rigidity and load-bearing capacity of the platform and can evenly transfer the vertical and horizontal loads during helicopter take-off and landing to the lower support structure, reducing the deformation of the first and second support platforms. The support structure is located on the lower surface of the second support platform and is used to fix the platform to the ship deck and bear the helicopter take-off and landing loads, so that the loads are transferred to the hull through the second support platform and the reinforcing structure. Safety railings are installed around the perimeter of the first support platform to provide safety protection for deck personnel during helicopter take-off, landing and parking, preventing personnel from falling; The drainage system is installed around the first support platform to promptly remove rainwater or wash water from the platform, preventing water accumulation and avoiding water accumulation that could affect helicopter take-off and landing safety and cause corrosion of the platform structure. Attached Figure Description

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a first support platform provided in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a second support platform provided in one embodiment of the present invention; Figure 3 A schematic diagram of a reinforcing structure provided in one embodiment of the present invention; Figure 4 This is an installation diagram of a drainage system provided in one embodiment of the present invention; Figure 5 This is a schematic diagram of the installation of a drainage ditch according to one embodiment of the present invention.

[0016] in, Figures 1-5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-First support platform; 2-Second support platform; 5-Reinforcing structure; 6-First support unit; 7-Second support unit; 8-Drainage system; 81-Drainage ditch; 82-Drainage channel; 83-Drainage pipe. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0019] Currently, the mainstream form of large ship helicopter platforms is the circular platform. The circular platform is one of the earliest and most widely used forms. Its main outline is circular or nearly circular, typically composed of curved panels, annular reinforcing ribs, and radial support structures. The main advantages of a circular platform are: a smooth, continuous outline, good aerodynamic performance; relatively uniform stress distribution, no sharp corners; and easy identification of the platform's center from the air by the pilot. Problems and drawbacks of circular platforms include: 1. The curved panels, annular reinforcing ribs, and curved side beams of a circular platform require CNC cutting or contour cutting, resulting in long cutting paths, low material utilization, and numerous processing steps. For large platforms, the fabrication, forming, and welding of curved components are difficult, significantly increasing construction costs and time. 2. Circular platforms are difficult to divide into regular standard modules radially or circumferentially; the shapes and sizes of each module are inconsistent, leading to low standardization in manufacturing and installation, which is detrimental to mass production and rapid on-site assembly. 3. Navigation lights, communication equipment, mooring points, personnel passages, drainage ditches, etc., need to be arranged along the curved edge. The equipment installation bases require special design, and the drainage ditches need to be made into a ring shape, making construction complex. Moreover, the drainage slope of the curved section is difficult to control precisely, which can easily cause local water accumulation. 4. Curved guardrails require straight pipes to be bent into shape, which is difficult and costly to process. In addition, the folding mechanism of curved guardrails is complex to design.

[0020] Based on the above, there is an urgent need to provide a helicopter platform that achieves superior technical performance in terms of manufacturing, equipment layout, structural stress, drainage performance, visual positioning, and aerodynamics. The following refers to the accompanying drawings in the specification. Figures 1-5 A detailed description of the helicopter platform is provided.

[0021] This application provides a helicopter platform, installed on a ship's deck, for helicopter take-off, landing, parking, and mooring. The platform includes: a first support platform 1, polygonal in shape, with at least twelve outer sides, and a rounded transition area at the vertices of any two adjacent outer sides, comprising multiple first support units 6, which are detachable and sealed together; a second support platform 2, located below the first support platform 1, also polygonal in shape, with at least twelve outer sides, and a rounded transition area at the vertices of any two adjacent outer sides, comprising multiple second support units 7, which are detachable and sealed together; a reinforcing structure 5, a grid-like support structure, positioned between the first support platform 1 and the second support platform 2; a support structure, positioned on the lower surface of the second support platform 2; a safety railing, positioned along the perimeter of the first support platform 1; and a drainage system 8, positioned along the perimeter of the first support platform 1.

[0022] Specifically, the number of outer sides of both the first support platform 1 and the second support platform 2 is greater than or equal to twelve. This makes the platform outline closer to a circle than polygons with fewer sides, such as hexagons, while retaining the advantages of polygonal straight sides that facilitate cutting, processing, and modularization. The increased number of sides and vertices provides more equipment installation positions and mooring points, facilitating the arrangement of complex equipment such as navigation lights, communication equipment, and personnel passages. At the same time, it makes the load distribution more uniform, reduces local stress concentration, improves the overall stress performance of the platform, and provides pilots with more continuous and clearer visual references.

[0023] A circular arc transition zone is set at the vertices of any two adjacent outer edges to avoid stress concentration caused by sharp corners, reduce the peak stress in the vertex area, and improve the platform's durability and safety under the dynamic load of helicopter take-off and landing.

[0024] The first support platform 1 is composed of multiple first support units 6 that are detachable and sealed together, and the second support platform 2 is composed of multiple second support units 7 that are detachable and sealed together. This significantly improves the modularity of the platform, making it easier to manufacture, transport, hoist and assemble in sections, and reducing the construction difficulty and cycle. The detachable connection facilitates later maintenance and replacement of individual support units, reducing maintenance costs. The sealed connection ensures the watertightness of the platform in the marine environment, preventing rainwater or seawater from seeping into the platform.

[0025] The reinforcing structure 5 is a grid-like support structure, located between the first support platform 1 and the second support platform 2. It effectively improves the overall rigidity and load-bearing capacity of the platform, and can evenly transfer the vertical and horizontal loads during helicopter take-off and landing to the lower support structure, reducing the deformation of the first support platform 1 and the second support platform 2.

[0026] The support structure is located on the lower surface of the second support platform 2 and is used to fix the platform to the ship deck and bear the load of helicopter take-off and landing, so that the load is transferred to the hull through the second support platform 2 and the reinforcing structure 5.

[0027] Safety railings are installed around the perimeter of the first support platform 1 to provide safety protection for deck personnel during helicopter take-off, landing and parking, and to prevent personnel from falling.

[0028] The drainage system 8 is installed around the first support platform 1, which can promptly remove rainwater or wash water from the platform, prevent water accumulation on the platform, and prevent water accumulation from affecting the safety of helicopter take-off and landing and causing corrosion of the platform structure.

[0029] In some alternative embodiments, the projection of the first support platform 1 onto the second support platform 2 coincides with the projection of the second support platform 2.

[0030] Specifically, the first support platform 1 and the second support platform 2 are arranged one above the other. The projection of the first support platform 1 onto the second support platform 2 coincides with that of the second support platform 2. That is, the outlines and dimensions of the first support platform 1 and the second support platform 2 are basically the same in the horizontal direction, and their upper and lower edges are flush. With the outlines of the first support platform 1 and the second support platform 2 coinciding, the helicopter take-off and landing loads are transmitted vertically downwards through the first support platform 1, the reinforcing structure 5, the second support platform 2, and the support structure. This avoids additional bending moments and eccentric loads caused by misalignment of the upper and lower platforms, resulting in a more uniform load distribution, reduced local stress concentration, and improved platform load-bearing capacity and structural reliability.

[0031] Furthermore, the first supporting platform 1 is a dodecagon, with twelve vertices: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 111, and 112. The side between any two adjacent vertices is a side of the dodecagon. The first supporting platform 1 is a dodecagon, with twelve vertices: 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 211, and 212. The side between any two adjacent vertices is a side of the dodecagon.

[0032] In some optional embodiments, the lengths of the outer edges of the first support platform 1 are equal, the lengths of the outer edges of the second support platform 2 are equal, and the lengths of the outer edges of the first support platform 1 are equal to the lengths of the outer edges of the first support platform 2.

[0033] Specifically, both the first support platform 1 and the second support platform 2 are regular polygons with equal lengths on all sides and equal angles at all vertices. The platforms are structurally symmetrical in the circumferential direction. When helicopter take-off and landing loads, wind loads, and wave loads are applied, the loads are evenly distributed along more than twelve sides and more than twelve vertices, avoiding local stiffness and strength differences caused by unequal side lengths, reducing stress concentration, and improving the overall load-bearing capacity and fatigue durability of the platforms.

[0034] Furthermore, the outer edges of the first support platform 1 and the outer edges of the second support platform 2 are of equal length and correspond one-to-one, ensuring that the edges, vertices, and positions of the upper and lower platforms and the reinforcing structure 5 are completely aligned in the vertical direction. When the load is transferred from the first support platform 1 to the second support platform 2 through the reinforcing structure 5, the force transmission path is vertical and continuous, without generating eccentric bending moments, further improving load transmission efficiency and structural reliability.

[0035] Furthermore, both the upper and lower platforms are regular polygons with equal sides, allowing the platform panels, side beams, reinforcing ribs, support units, and other components to adopt uniform specifications and dimensions, reducing the types of components and the number of molds, and facilitating standardized design.

[0036] Furthermore, the regular polygon can be selected as a regular dodecagon. The sides of a regular dodecagon are of equal length and the angles of all vertices are equal. When viewed from the air, the outline is regular and symmetrical, which allows the pilot to quickly determine the center and orientation of the platform, thereby improving the safety and accuracy of helicopter take-off and landing.

[0037] In some alternative embodiments, the lengths of at least a plurality of outer sides of the first support platform 1 are not equal, and the lengths of at least a plurality of outer sides of the second support platform 2 are not equal.

[0038] Specifically, the outer sides of the first support platform 1 and the second support platform 2 are designed with unequal lengths. The length of each side can be flexibly adjusted according to the actual available space on the deck, so that the platform outline matches the deck space, making full use of the limited deck area and avoiding the inability to arrange or wasting space due to the use of regular polygons. The perimeter of the first platform needs to be equipped with various devices such as navigation lights, communication equipment, mooring points, personnel passages, fire-fighting equipment, and drainage ditches. The space and installation base requirements vary in different locations.

[0039] In some optional embodiments, the drainage system 8 includes a plurality of drainage ditches 81, drainage channels 82 and drainage pipes 83. The drainage ditches 81 extend along the outer side of the first support platform 1 and include a plurality of straight drainage segments extending along the outer side of the first support platform 1. The drainage channels 82 are located at the apex of the first support platform 1 and the drainage pipes 83 are connected to the drainage channels 82. Each straight drainage segment has a preset slope in its own length direction.

[0040] Specifically, the outer edge of the first support platform 1 is a straight edge, and the drainage ditch 81 extends along the outer edge and is composed of multiple straight drainage sections. Compared with the annular drainage ditch of the circular platform, the straight drainage sections can directly adopt straight trenches or prefabricated linear drainage channels. Each straight drainage section has a preset slope along its own length direction. Under the action of gravity, the water flows quickly along the straight section to the drainage channel 82 at the top. The drainage path is short and the direction is clear, avoiding long-distance detours or stagnation of water on the first support platform 1, improving drainage efficiency and reducing water accumulation on the platform.

[0041] Drainage trough 82 is located at the apex of the first support platform 1. Water from each straight drainage section converges at the drainage trough at the apex and is then discharged from the first support platform 1 through the connected drainage pipe. The apex, as the intersection of multiple sides, is naturally suitable as a water collection node, making the drainage system 8 compact and the pipe layout concentrated. When the number of outer sides is greater than or equal to twelve, the larger number of sides and the relatively shorter individual sides allow for a more even distribution of drainage ditches and a smaller water accumulation area. A larger number of apexes also results in a denser distribution of water collection points and more timely drainage. A preset slope ensures that the water flow does not stagnate in the middle of the straight drainage section, and the drainage trough 82 and drainage pipe 83 promptly discharge water from the first support platform 1, preventing water accumulation on the platform surface.

[0042] In some optional embodiments, each straight drainage section has a preset slope of 0.5% to 1% along its length to guide the water flow toward the drainage trough 82.

[0043] Specifically, a slope of 0.5% to 1% provides sufficient gravity-driven force for water flow, allowing rainwater or flushing water to flow continuously along the straight drainage section to the drainage ditch, preventing water from stagnating midway through the drainage section and reducing water accumulation on the platform surface and in the drainage ditch. When the slope is less than 0.5%, the water flow driving force is insufficient, and drainage is easily impeded by construction errors or obstructions; when the slope is too large, the platform surface tilts significantly, affecting the stability of personnel walking and helicopter take-off and landing. A slope of 0.5% to 1% ensures drainage effectiveness while keeping the tilt of the platform surface within a reasonable range, balancing drainage performance with walking and take-off / landing safety.

[0044] In some optional embodiments, each first support unit 6 is fan-shaped, with the radius sides of any two adjacent fan shapes abutting each other, and a sealing gasket is provided between the radius sides of one fan shape and the radius sides of another fan shape. Side beams are provided on the radius sides of any two adjacent fan shapes, and flange plates are provided on the side beams. Any two adjacent flange plates are fixedly connected by bolts.

[0045] Specifically, the first support platform 1 is a polygon with at least twelve outer sides. It is radially divided from the platform's center, with each sector corresponding to a vertex or an edge region. The radius side of each sector forms the joint between adjacent modules. The radius side of the sector module, pointing from the platform's center to its vertex, marks the location of the platform's radial force path. Adjacent sectors are joined along their radius sides, ensuring the joint direction aligns with the load transfer direction. A sealing gasket is placed between the radius sides of adjacent sectors to fill the gaps in the joint surfaces, preventing rainwater, seawater, or washing water from seeping into the platform's interior, protecting the internal structure and equipment, and preventing corrosion and electrical failures.

[0046] Side beams are installed on the radial side of adjacent sectors. The side beams serve as edge reinforcement members of the sector modules, which can improve the edge stiffness of the modules and prevent edge deformation. At the same time, the side beams serve as connecting carriers, transferring the load of the sector modules to the flange plates and bolts, so that the joints have sufficient load-bearing capacity to meet the dynamic load requirements of helicopter take-off and landing.

[0047] In some alternative embodiments, the reinforcing structure 5 includes multiple triangular support frames that are interconnected to form a grid-like support structure.

[0048] Specifically, the triangle is the most geometrically stable planar structural form. The reinforced structure 5, composed of multiple triangular support frames, is less prone to shape change when subjected to the vertical loads, horizontal loads, and torques of helicopter take-off and landing. It can effectively resist shear deformation and bending deformation, thereby improving the overall rigidity of the platform.

[0049] The grid structure formed by the triangular support frame has high overall rigidity, which can effectively limit the relative deformation between the first support platform 1 and the second support platform 2, reduce the vibration and deflection of the platform under the impact load of helicopter take-off and landing, ensure the flatness of the platform surface, and improve take-off and landing safety.

[0050] Furthermore, such as Figure 3 As shown, the support structure includes multiple support units, each including a quadrilateral support frame and diagonal support rods. The four vertices of the quadrilateral support frame are 31, 32, 41, and 42. The diagonal support rods are located inside the quadrilateral support frame, connecting vertices 31 and 42 to form two triangular support frames. The quadrilateral support frame includes two vertical support rods, 31-41 and 32-42. One of the vertical support rods, 31-41, also forms a quadrilateral support frame with the central rod 0-0 of the support structure. The diagonal support rod 31-0 is located inside the quadrilateral support frame, also forming two triangular support frames. Similarly, the other vertical support rod, 32-42, also forms a quadrilateral support frame with the central rod 0-0 of the support structure. The diagonal support rod 42-0 is located inside the quadrilateral support frame, also forming two triangular support frames.

[0051] In some alternative embodiments, the support structure includes a plurality of triangular and / or quadrilateral frames arranged circumferentially along the second support platform 2. The frames are connected to the second support platform 2 by welding or high-strength bolts and fixed to the ship deck by pre-embedded bolts, welding or flange connections.

[0052] Specifically, the support structure is arranged around the second support platform, so that the support points are distributed around the platform and correspond to the edges and vertices of the polygonal platform. The load is transferred downward from the platform edge and vertex areas. The support points are evenly distributed, avoiding excessively dense or sparse local support and improving the overall stability of the platform.

[0053] On the other hand, this application also provides a vessel including any of the helicopter platforms mentioned above.

[0054] In this invention, the term "multiple" refers to at least two or more, unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A helicopter platform, installed on a ship's deck, for the take-off, landing, parking, and mooring of helicopters, characterized in that, include: The first support platform (1) is polygonal, the number of outer sides of the polygon is greater than or equal to twelve, and any two adjacent vertices of the outer sides have an arc transition area, including multiple first support units (6), the multiple first support units (6) are detachable and sealed connected. The second support platform (2) is located below the first support platform (1) and is polygonal. The number of outer sides of the polygon is greater than or equal to twelve. Any two adjacent vertices of the outer sides have an arc transition area. Multiple second support units (7) are detachable and sealed. The reinforcing structure (5) is a grid-like support structure, which is located between the first support platform (1) and the second support platform (2); A support structure is provided on the lower surface of the second support platform (2); Safety railings are installed around the perimeter of the first support platform (1); A drainage system (8) is provided along the periphery of the first support platform (1).

2. The helicopter platform according to claim 1, characterized in that, The projection of the first support platform (1) onto the second support platform (2) coincides with the second support platform (2).

3. The helicopter platform according to claim 2, characterized in that, The lengths of the outer sides of the first support platform (1) are equal, the lengths of the outer sides of the second support platform (2) are equal, and the lengths of the outer sides of the first support platform (1) are equal to the lengths of the outer sides of the first support platform (1).

4. The helicopter platform according to claim 2, characterized in that, The lengths of at least some of the outer sides of the first support platform (1) are not equal, and the lengths of at least some of the outer sides of the second support platform (2) are not equal.

5. The helicopter platform according to claim 1, characterized in that, The drainage system (8) includes multiple drainage ditches (81), drainage channels (82), and drainage pipes (83). The drainage ditches (81) extend from the center of the first support platform (1) toward the outer side of the first support platform (1). The drainage ditches (81) include multiple straight drainage sections extending along the outer side of the first support platform (1). The drainage channels (82) are located at the apex of the first support platform (1). The drainage pipes (83) are connected to the drainage channels (82). Each of the straight drainage sections has a preset slope in its own length direction.

6. The helicopter platform according to claim 5, characterized in that, Each of the straight drainage sections has a preset slope of 0.5% to 1% along its length to guide the water flow toward the drainage trough.

7. The helicopter platform according to claim 1, characterized in that, Each of the first support units (6) is fan-shaped, with the radius sides of any two adjacent fan-shaped units joined together. A sealing gasket is provided between the radius sides of one fan-shaped unit and the radius sides of the other fan-shaped unit. Side beams are provided on any two adjacent fan-shaped units, and flange plates are provided on the side beams. Any two adjacent flange plates are fixedly connected by bolts.

8. The helicopter platform according to claim 1, characterized in that, The reinforcing structure (5) includes multiple triangular support frames, which are interconnected to form a grid-like support structure.

9. The helicopter platform according to claim 1, characterized in that, The support structure includes a plurality of triangular and / or quadrilateral frames arranged circumferentially along the second support platform (2). The frames are connected to the second support platform (2) by welding or high-strength bolts and are fixed to the ship deck by pre-embedded bolts, welding or flange connection.

10. A ship, characterized in that, Includes the helicopter platform as described in any one of claims 1-9.

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