A footbridge for connecting offshore platforms and transport ships

Abstract

This utility model provides a connecting walkway between an offshore platform and a transport ship, comprising a frame structure, a walkway panel on the upper surface of the frame structure, railing assemblies on the transverse sides of the frame structure, connecting hooks at the platform connection end of the frame structure, and a connection to the offshore platform's ladder beams via the connecting hooks; the ship-attached end of the frame structure rests directly on the transport ship without being secured. This utility model provides reliable strength, lightweight construction, and ensures personnel safety between the offshore platform and the transport ship.

Description

Technical Field

[0001] This utility model relates to the field of offshore wind power generation technology, specifically to a connecting bridge between an offshore platform and a transport ship. Background Technology

[0002] Offshore wind power is currently a hot topic in the global new energy industry. Vigorously developing offshore wind power is one of the powerful supports for my country to promote the infrastructure construction of the new energy industry and achieve the dual carbon goals of "carbon peaking" and "carbon neutrality." Offshore wind power projects often need to be built on offshore platforms, and with the increasing popularity of the offshore wind power industry, my country's offshore platforms have also entered a peak construction period.

[0003] Due to the operational and maintenance needs of offshore platforms, personnel must board them for related tasks. The harsh marine environment and high rescue difficulty necessitate effective measures to ensure the safety of personnel during offshore operations. The traditional method of boarding offshore platforms involves the transport ship mooring directly beside the platform, with personnel jumping or stepping onto the platform from the ship. However, because the transport ship is constantly swaying due to wind and waves, personnel are poorly protected during the boarding process, making it extremely dangerous. If the timing is not right, a serious accident involving personnel falling into the sea could occur.

[0004] Based on the above, this utility model proposes a connecting bridge between an offshore platform and a transport ship, which can effectively solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a connecting bridge between an offshore platform and a transport ship. This invention offers reliable strength, is lightweight and easy to use, and effectively ensures personnel safety between the offshore platform and the transport ship.

[0006] This utility model provides a connecting walkway between an offshore platform and a transport ship, including a frame structure, a walkway panel on the upper surface of the frame structure, railing assemblies on the lateral side of the frame structure, a connecting hook at the platform connection end of the frame structure, and a connection to the ladder beam of the offshore platform via the connecting hook, and the ship connection end of the frame structure is directly placed on the transport ship without being fixed.

[0007] In one embodiment, the connecting hook is configured as a horizontal L-shaped hook, and the offshore platform ladder beam is correspondingly provided with an L-shaped fixing hook; the vertical section of the L-shaped fixing hook is arranged perpendicular to the L-shaped hook, and its bottom is fixedly connected to the offshore platform ladder beam; the L-shaped hook is detachably hooked onto the vertical section of the L-shaped fixing hook.

[0008] In one embodiment, the pedestrian panel includes a plurality of longitudinal flat steel ribs arranged in parallel and spaced apart along the longitudinal direction of the frame structure, and the plurality of longitudinal flat steel ribs arranged in parallel and spaced apart are connected by transverse flat steel ribs arranged perpendicular to them.

[0009] In one embodiment, the railing assembly includes multiple railing posts arranged at intervals on the lateral side of the frame structure, and the multiple railing posts are fixedly connected at the top by railing handrails.

[0010] In one embodiment, the railing assembly further includes multiple railing tie rods, with the railing tie rods connecting adjacent railing posts and between railing posts and railing handrails.

[0011] In one embodiment, the frame structure is provided with a plurality of railing sleeves on its lateral side that are adapted to the railing posts.

[0012] In one embodiment, the frame structure includes several transverse main beams and longitudinal secondary beams, wherein the transverse main beams and longitudinal secondary beams are connected perpendicularly to each other to form a grid-like load-bearing skeleton structure.

[0013] The beneficial effects of the connecting bridge between the offshore platform and the transport ship provided in this embodiment of the utility model are as follows:

[0014] 1. The main structure of the connecting walkway of this utility model can be made of titanium alloy, which is lightweight and high-strength. The walkway is fixed to the L-shaped fixed hook of the boarding platform by movable hooks, ensuring a reliable connection while allowing a certain degree of displacement and rotation to adapt to the movement of the transport ship under the action of waves.

[0015] 2. The connecting frame structure of this utility model is arranged around the perimeter and mid-span of the pedestrian bridge. It can be made of aluminum alloy square steel and can effectively bear the upper load when people pass through. The pedestrian panel is made of longitudinal flat steel ribs and transverse flat steel ribs welded together. The upper surfaces of the longitudinal and transverse flat steel ribs are ground into a serrated shape to provide anti-slip function for pedestrians.

[0016] 3. This utility model's connecting bridge features a horizontal L-shaped hook at the platform connection end of the frame structure, and a similar L-shaped fixing hook is fabricated on the boarding platform. The movable hook and the L-shaped fixing hook only need to interlock to ensure that the connecting bridge will not detach from the L-shaped fixing hook, thus achieving convenient fixation of the connecting bridge.

[0017] 4. The connecting walkway of this utility model is equipped with sleeved railings arranged along the transverse side of the frame structure. The railing sleeves facilitate the overall assembly and disassembly of the railings. The railings provide protection when personnel enter the platform, preventing them from falling into the sea and improving the safety of the connecting walkway. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall layout of the connecting bridge provided in an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A magnified view of part A;

[0021] Figure 3 for Figure 2 A sectional view at BB;

[0022] Figure 4 This is a schematic diagram of the structure of the railing assembly provided in an embodiment of the present utility model;

[0023] Figure 5 A schematic diagram showing the arrangement of longitudinal and transverse flat steel ribs on the pedestrian panel provided in this embodiment of the utility model;

[0024] Figure 6 for Figure 5 A sectional view at point CC.

[0025] Reference numerals: 1. Offshore platform; 2. Transport vessel; 3. Walkway panel; 4. Longitudinal main beam; 5. L-shaped fixing hook; 6. L-shaped hook; 7. Sealing plate; 8. Handrail; 9. Handrail post; 10. Handrail sleeve; 11. Offshore platform ladder beam; 12. Handrail tie rod; 13. Transverse flat steel rib; 14. Longitudinal flat steel rib; 15. Transverse secondary beam; 16. Vertical section. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the present utility model. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present utility model.

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0028] like Figure 1 As shown, a connecting walkway between an offshore platform and a transport ship includes a frame structure, a walkway panel 3 laid on the upper surface of the frame structure, railing assemblies installed on the lateral sides of the frame structure, a connecting hook installed at the platform connection end of the frame structure and connected to the offshore platform ladder beam 11 through the connecting hook, and the ship overlap end of the frame structure rests directly on the transport ship 2 without being fixed.

[0029] In this embodiment, the frame structure, pedestrian panel, connecting hooks, and railing assembly are all made of titanium alloy.

[0030] like Figure 2 and Figure 3 As shown, the connecting hook is welded to the transverse secondary beam 15 of the frame structure. The connecting hook is set as a horizontal L-shaped hook 6. The offshore platform ladder beam 11 is provided with an L-shaped fixing hook 5. The L-shaped fixing hook 5 is welded to the offshore platform ladder beam 11. The vertical section 16 of the L-shaped fixing hook 5 is arranged perpendicular to the L-shaped hook 6, and its bottom is fixedly connected to the offshore platform ladder beam 11. The L-shaped hook 6 is detachably hooked onto the vertical section 16 of the L-shaped fixing hook 5.

[0031] The detachable hook connection between the L-shaped hook and the L-shaped fixed hook enables rapid installation and disassembly between the walkway bridge and the offshore platform. The unique design of the horizontal L-shaped hook 6 and the vertical L-shaped fixed hook 5 effectively prevents disengagement, ensuring the walkway bridge maintains stable positioning under wave loads. Furthermore, the hook connection method allows for a certain degree of freedom in the vertical direction, accommodating the irregular movement of the transport vessel 2 under waves.

[0032] In this embodiment, sealing plates 7 are provided at the ends of both the L-shaped fixing hook 5 and the L-shaped hook 6 to prevent seawater from entering and causing structural corrosion.

[0033] The pedestrian panel 3 includes multiple longitudinal flat steel ribs 14 arranged parallel to each other along the longitudinal direction of the frame structure. The multiple longitudinal flat steel ribs 14 are connected by transverse flat steel ribs 13 arranged perpendicular to them. In this embodiment, the longitudinal flat steel ribs 14 and the transverse flat steel ribs 13 are welded together, and the upper parts of the longitudinal flat steel ribs 14 and the transverse flat steel ribs 13 are ground into a serrated shape, which can play a role in anti-slip.

[0034] The railing assembly includes multiple railing posts 9 arranged at intervals on the lateral side of the frame structure, and the multiple railing posts 9 are fixedly connected at the top by railing handrails 8.

[0035] The railing assembly also includes multiple railing rods 12, with the railing rods 12 connecting adjacent railing posts 9 and between railing posts 9 and railing handrails 8.

[0036] The frame structure has several railing sleeves 10 on its lateral side that are adapted to the railing posts 9. The sleeves 10 and the posts 9 are connected by a loop, which allows for easy assembly and disassembly of the railing assembly. The components of the railing assembly are connected by welding to ensure the strength of the connection.

[0037] The frame structure includes several transverse main beams 4 and longitudinal secondary beams 15. The transverse main beams 4 and the longitudinal secondary beams 15 are connected perpendicularly to each other to form a grid-like load-bearing skeleton structure.

[0038] In this embodiment, both the longitudinal main beam 4 and the transverse secondary beam 15 are made of 80x50x5mm titanium alloy square steel, and the L-shaped fixing hook 5 and the connecting hook are both made of... The railing is constructed of round tubing, with a 5mm thick end cap 7 at each end. Both the handrail 8 and the railing posts 9 are made of... Round tube, railing sleeve 10 adopts Perforated round tube, railing tie rod 12 adopts The round tube has longitudinal flat steel ribs 14 and transverse flat steel ribs 13 made of -3x20mm flat steel, and the connection between the longitudinal flat steel ribs 14 and the transverse flat steel ribs 13 is welded.

[0039] In actual operation, after the transport ship 2 berths and approaches the offshore platform 1, the staff only needs to place one end of the walkway on the deck of the transport ship 2, and then slide the other end to fasten the L-shaped hook 6 onto the L-shaped fixing hook 5 to complete the installation of the walkway. When leaving, the device can be disassembled simply by sliding the connection part away from the transport ship 2. The designed walkway device is convenient and efficient, and can effectively ensure the safe passage of staff to and from the offshore platform.

[0040] Since the connecting walkway needs to be installed and dismantled manually when landing on the offshore platform 1, the structure designed in this invention is lightweight and simple, facilitating the work of personnel. At the same time, the connecting walkway of this invention has reliable structural strength, capable of withstanding the upper load when personnel move back and forth on the connecting walkway.

[0041] When the connecting bridge is placed between the transport ship 2 and the offshore platform 1, the ship will move back and forth due to the wind and waves. Therefore, this utility model can adapt to the vertical and horizontal movement of the ship, and while having a certain displacement and rotation space, the connection will not fall off.

[0042] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the connecting bridge of this utility model between an offshore platform and a transport ship, and can achieve the positive effects described in this utility model.

[0043] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0044] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A connecting gangway for use between an offshore platform and a transport vessel, characterized in that: It includes a frame structure, with a walkway panel laid on the upper surface of the frame structure, railing components installed on the lateral sides of the frame structure, and connecting hooks installed at the platform connection ends of the frame structure, which are connected to the ladder beams of the offshore platform through the connecting hooks. The ship-connecting ends of the frame structure are placed directly on the transport ship without being fixed.

2. A connecting gangway between a sea platform and a carrier vessel according to claim 1, characterized in that: The connecting hook is configured as a horizontal L-shaped hook, and the offshore platform ladder beam is correspondingly provided with an L-shaped fixing hook; the vertical section of the L-shaped fixing hook is arranged perpendicular to the L-shaped hook, and the bottom is fixedly connected to the offshore platform ladder beam; the L-shaped hook is detachably hooked onto the vertical section of the L-shaped fixing hook.

3. The connecting bridge between an offshore platform and a transport ship according to claim 1, characterized in that: The pedestrian panel includes multiple longitudinal flat steel ribs arranged parallel to each other along the longitudinal direction of the frame structure. The multiple longitudinal flat steel ribs arranged parallel to each other are connected by transverse flat steel ribs arranged perpendicular to them.

4. The connecting bridge between an offshore platform and a transport ship according to claim 1, characterized in that: The railing assembly includes multiple railing posts arranged at intervals on the lateral side of the frame structure, and the multiple railing posts are fixedly connected at the top by railing handrails.

5. The connecting bridge between an offshore platform and a transport ship according to claim 4, characterized in that: The railing assembly also includes multiple railing rods, which are connected between adjacent railing posts and between railing posts and railing handrails.

6. The connecting bridge between an offshore platform and a transport ship according to claim 4, characterized in that: The frame structure has several railing sleeves on its lateral side that are adapted to the railing posts.

7. The connecting bridge between an offshore platform and a transport ship according to claim 1, characterized in that: The frame structure includes several transverse main beams and longitudinal secondary beams, which are connected perpendicularly to each other to form a grid-like load-bearing skeleton structure.

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