A sloping ladder boarding facility for offshore platforms

Abstract

This invention provides a ramp-type boarding facility for offshore platforms, comprising a support frame fixed to a offshore jacket structure. Multiple boarding platforms are arranged along the height of the support frame, with adjacent platforms staggered horizontally. Adjacent platforms are connected by ramps, and railings are provided on the sides of the ramps and platforms. Each boarding platform has a short ladder at its base, the upper end of which connects to the platform. This invention is robust and reliable, adaptable to different water levels, meets the berthing needs of different types and heights of transport vessels, and effectively ensures the safe passage of personnel to and from offshore platforms.

Description

Technical Field

[0001] This utility model relates to the field of inclined ladder boarding facilities for offshore platforms. Background Technology

[0002] Offshore wind power boasts numerous advantages, including high efficiency, cleanliness, significant application potential, and strong sustainability, making it a crucial development direction in the new energy sector. Offshore wind power plant projects often require the construction of supporting offshore platforms, such as offshore substations. With the large-scale development of offshore wind power, the number of offshore platforms in my country is also increasing daily.

[0003] Due to the operational and maintenance needs of offshore platforms, personnel must board them for related work. Compared to land-based platforms, offshore platforms operate in harsher environments, making rescue operations more difficult and increasing the risk of accidents if not properly protected. The traditional method of accessing offshore platforms involves vertical ladders, which are difficult, time-consuming, and physically demanding. Furthermore, the use of ladders in the face of rough seas poses significant dangers to personnel traveling to and from the platform. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a sloping ladder-type boarding facility for offshore platforms. This invention is robust and reliable, adaptable to different water levels, meets the berthing needs of transport vessels of different models and heights, and effectively ensures the safe passage of personnel to and from offshore platforms.

[0005] This utility model provides a sloping ladder boarding facility for offshore platforms, including a support frame fixed to an offshore jacket, multiple boarding platforms arranged along the height direction on the support frame, adjacent boarding platforms staggered in the horizontal direction, adjacent boarding platforms connected by sloping ladders, railings provided on the sides of the sloping ladders and boarding platforms, and a short ladder provided below each boarding platform, the upper end of the short ladder being connected to the boarding platform.

[0006] In one embodiment, the support frame includes multiple vertical support members arranged at intervals, and the multiple vertical support members are connected to the offshore jacket by transverse support members. Adjacent vertical support members are connected by transverse connecting members.

[0007] In one embodiment, the boarding platform includes a platform frame consisting of vertical support members, horizontal support members, and platform beams at both ends mounted on adjacent horizontal support members. The bottom of the platform frame is covered with a platform steel grating, and a ladder handrail is provided on the platform frame, with its bottom connecting to the top of the short ladder.

[0008] In one embodiment, the short ladder includes ladder fixing members correspondingly arranged on the support frame, and the ladder steps are arranged between the two ladder fixing members.

[0009] In one embodiment, the boarding platform is provided with a detachable chain at the junction of the top of the short ladder and the boarding platform.

[0010] In one embodiment, the inclined ladder includes ladder beams arranged correspondingly between adjacent boarding platforms, stair treads are provided between the two ladder beams, and the stair treads include step steel gratings, with the two sides of the step steel gratings connected to the ladder beams by supporting flat steel.

[0011] In one embodiment, the railing is composed of multiple railing posts and railing rods connected together, with handrails connected to the top of the railing posts and kickboards installed at the bottom of the railing.

[0012] In one embodiment, the boarding platform is provided with an anti-slip rubber pad at the connection point with the top of the short ladder, and the anti-slip rubber pad is fixed to the platform frame by a rubber pad support flat steel.

[0013] In one embodiment, the bottom of each inclined ladder is equipped with a fall-prevention wire mesh, which is fixed to the bottom of the inclined ladder by a wire mesh support tube.

[0014] In one embodiment, rubber fenders and mooring bollards are provided on multiple of the vertical support members.

[0015] The beneficial effects of the inclined ladder-type boarding facility for offshore platforms provided in this embodiment of the invention are as follows:

[0016] 1. The boarding facility of this utility model is fixed on the offshore jacket structure and is mainly made of steel. Multiple boarding platforms at different heights are sequentially set up to accommodate changes in sea level. A short ladder is installed below each boarding platform to adapt to changes in sea level, ensuring that staff can access adjacent platforms under different water conditions. The boarding platforms are connected by inclined ladders, making personnel passage much easier than with ladder-type boarding facilities. Furthermore, railings and handrails are installed on both the boarding platforms and the inclined ladders to effectively ensure the safety of staff when moving between the offshore platforms.

[0017] 2. A support frame with sufficient structural strength is connected to the jacket, and its height range can meet the berthing requirements of different vessel types and fender heights. The overall structure has good structural strength, and rubber fenders are installed on the end faces of the vertical support members to absorb impact energy, thus effectively ensuring the structural reliability of the vessel during berthing.

[0018] 3. The inclined ladder of this utility model mainly consists of ladder beams, steel grating steps, and supporting flat steel bars. The steel grating steps are connected to the ladder beams on both sides by supporting flat steel bars. In addition to the railings on both sides of the inclined ladder, a fall-prevention wire mesh is installed at the bottom of the inclined ladder to prevent people from falling and causing accidents.

[0019] 4. Multiple boarding platforms are arranged from top to bottom. Each boarding platform consists of a platform frame composed of vertical and horizontal support members of the aforementioned support frame, and platform beams at both ends supported by adjacent horizontal support members. Lightweight, high-strength steel grating is laid on the platform frame to meet the needs of personnel boarding and short rest. Removable chains and anti-slip rubber mats are installed at the connection between the boarding platform and the top of the short ladder to further ensure the safety of personnel when moving across the platform. Attached Figure Description

[0020] 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.

[0021] Figure 1 A schematic diagram of the installation of the inclined ladder-type boarding facility on a marine jacket provided in an embodiment of this utility model;

[0022] Figure 2 A schematic diagram of the inclined ladder boarding facility provided in this embodiment of the utility model;

[0023] Figure 3 A top view of the short ladder provided in an embodiment of this utility model;

[0024] Figure 4 A front view of the handrail provided in an embodiment of this utility model;

[0025] Figure 5 A schematic diagram of the inclined ladder provided in an embodiment of this utility model;

[0026] Figure 6 for Figure 5 A magnified view of part A;

[0027] Figure 7 for Figure 5 Schematic diagram of the structure in the middle BB direction;

[0028] Figure 8 A schematic diagram illustrating the arrangement of the anti-fall wire mesh provided in this embodiment of the utility model;

[0029] Figure 9 A schematic diagram of the structure of the railing provided in an embodiment of this utility model;

[0030] Figure 10 A schematic diagram of chain installation provided for an embodiment of this utility model;

[0031] Figure 11This is a schematic diagram of the boarding platform provided in an embodiment of the present utility model;

[0032] Figure 12 This is a schematic diagram illustrating the installation of the anti-slip rubber pad provided in an embodiment of the present invention.

[0033] Reference numerals: 1. Offshore jacket; 2. Support frame; 3. Handrail; 4. Short ladder; 5. Ladder handrail; 6. Boarding platform; 7. Stair tread; 8. Ladder beam; 9. Platform beam; 10. Vertical support component; 11. Chain; 12. Rubber fender; 13. Ladder fixing component; 14. Ladder tread; 15. Mooring post; 16. Step steel grating; 17. Support flat steel; 18. Fall protection wire mesh; 19. Wire mesh support pipe; 20. Handrail post; 21. Handrail handrail; 22. Handrail tie rod; 23. Kickboard; 24. Platform steel grating; 25. Anti-slip rubber mat; 26. Rubber mat support flat steel; 27. Lateral support component; 28. Lateral connecting component. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] like Figures 1 to 2 As shown, a sloping ladder-type boarding facility for offshore platforms is provided. This facility is fixed to one side of a offshore jacket 1 and includes a support frame 2 fixed to the jacket 1. Multiple boarding platforms 6 are arranged along the height direction on the support frame 2 to adapt to changes in water level. Adjacent boarding platforms 6 are staggered horizontally and connected by sloping ladders. Railings 3 are provided on the sides of the ladders and boarding platforms 6, welded to the ladder beams 8 of the ladders and the platform beams 9 of the boarding platforms 6 to ensure worker safety. Each boarding platform 6 has a short ladder 4 at its bottom, with the upper end of the short ladder connected to the boarding platform 6 for workers to access the nearest platform 6. The short ladder 4 is short and easy to climb.

[0037] The support frame 2 includes multiple vertical support members 10 arranged at intervals. The multiple vertical support members 10 are connected to the offshore jacket 1 by a transverse support member 27. Adjacent vertical support members 10 are connected by a transverse connecting member 28.

[0038] Furthermore, the vertical support member 10 and the ladder fixing member 13 on the support frame 2 can be made of steel pipes. Therefore, the exposed ends of the vertical support member 10 and the ladder fixing member 13 must be sealed with plates to prevent corrosion of the steel structure caused by sea and salt spray.

[0039] like Figure 11 As shown, the boarding platform 6 is used for staff to take a short rest when boarding and passing through. The boarding platform 6 specifically includes a platform frame composed of vertical support members 10, horizontal support members 27 and platform beams 9 erected on adjacent horizontal support members 27 at both ends of the support frame 2. The bottom of the platform frame is covered with platform steel grating 24. The vertical support members 10, which are part of the platform frame, are provided with ladder handrails 5 whose bottoms are connected to the upper end of the short ladder 4, thereby facilitating staff to board the adjacent boarding platform 6.

[0040] like Figure 3 As shown, the short ladder 4 includes ladder fixing members 13 arranged correspondingly on two vertical support members 10 of the support frame 2, and the ladder steps 14 are arranged between the two ladder fixing members 13. In this embodiment, the ladder steps 14 are made of square steel.

[0041] The boarding platform 6 has a detachable chain 11 at the connection between the top of the short ladder 4 and the boarding platform 6. The two ends of the chain 11 are fixed to the railing 3 of the boarding platform 6. The chain 11 is normally in a looped state, which serves as a safety protection function. When staff board the ship, they can untie the chain 11 to enter.

[0042] like Figures 5-7 As shown, the inclined ladder includes ladder beams 8 arranged between adjacent boarding platforms 6, and stair steps 7 are set between the two ladder beams 8. The stair steps 7 include step steel grating 16, and the two sides of the step steel grating 16 are welded to the ladder beams 8 by supporting flat steel 17.

[0043] like Figure 9 and Figure 10 As shown, the railing 3 is composed of multiple railing posts 20 and railing rods 22 connected together. The railing posts 20 are connected to the railing handrails 21 at the top, and the railing 3 is equipped with a kick plate 23 at the bottom.

[0044] like Figure 12 As shown, the boarding platform 6 is provided with an anti-slip rubber pad 25 at the connection point with the top of the short ladder 4. The anti-slip rubber pad 25 is fixed to the platform frame by the rubber pad support flat steel 26, which further ensures safety.

[0045] like Figure 8 As shown, the bottom of each inclined ladder is equipped with a fall-prevention wire mesh 18, which is fixed to the bottom of the inclined ladder by a wire mesh support tube 19 to prevent accidents caused by falling people or objects.

[0046] like Figure 4 As shown, rubber fenders 12 and mooring bollards 15 are provided on the multiple vertical support members 10. Specifically, the rubber fenders 12 are provided on the side of the vertical support member 10 away from the offshore jacket 1. The rubber fenders 12 are used to absorb the impact energy generated when the transport ship berths, ensuring the structural reliability. The mooring bollards 15 are used to moor the transport ship when it docks, reducing the relative movement between the ship and the platform, facilitating personnel boarding, and improving safety.

[0047] In this implementation example, the elevation difference between adjacent boarding platforms 6 in the vertical direction is 1.4m. Ladder beams 8 and platform beams 9 are made of 219x12 steel pipes; vertical support components 10 are made of 356x20 steel pipes, all of which are made of Q335C steel; rubber fenders 12 are of model SA400HX3000L; step steel gratings 16 and platform steel gratings 24 are both of model G405 / 40 / 50WS, made of Q235B steel; railing posts 20 and railing handrails 21 are made of 45x5 steel pipes, and railing tie rods 22 are made of 32x4 steel pipes, all of which are made of 20# seamless steel pipes; supporting flat steel 17 is 13mm thick and made of Q235B steel; ladder steps 14 are made of 25x25 solid square steel, made of Q235B steel. The steel structure components are mainly fixed by welding connections.

[0048] After the inclined ladder boarding facility is completed, staff can operate the transport ship to approach the offshore platform and moor it through the mooring bollard 15. They can then climb onto the adjacent boarding platform 6 via the short ladder 4 and directly enter the upper structure of the offshore platform via the inclined ladder. Compared with the straight ladder boarding facility, this utility model is more time-saving, labor-saving, safe, convenient and reliable in structure.

[0049] Currently, the most common method for boarding offshore platforms is the straight ladder-type boarding facility. This method is difficult to climb, physically demanding, and the transport ship will move back and forth due to wind and waves, easily creating safety hazards. Therefore, the offshore platform boarding facility of this utility model needs to effectively ensure operational safety, facilitate the passage of personnel, and save time and effort.

[0050] Due to the influence of tides, the water level near the offshore platform varies within a certain range, therefore this invention is adaptable to different water levels. Furthermore, since transport ships vary in type and the chord height differs at different parts of the same ship, the boarding facilities must also be able to meet the berthing needs of vessels of different types and chord heights.

[0051] When a transport ship berths at an offshore platform, it will generate a certain impact load due to the impact. The boarding platform is equipped with appropriate devices to absorb the energy generated when the ship berths, and at the same time, it must have sufficient strength to ensure that the structure is not damaged when it receives the impact load.

[0052] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the inclined ladder boarding facility of this utility model for offshore platforms, and can produce the positive effects described in this utility model.

[0053] 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.

[0054] 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.

[0055] 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 ramp-type boarding facility for offshore platforms, characterized in that: The system includes a support frame fixed to a offshore jacket structure. Multiple boarding platforms are arranged along the height direction on the support frame. Adjacent boarding platforms are staggered in the horizontal direction and connected to each other by inclined ladders. The inclined ladders and the sides of the boarding platforms are equipped with railings. Each boarding platform is equipped with a short ladder below it, and the upper end of the short ladder is connected to the boarding platform.

2. The inclined ladder boarding facility for offshore platforms according to claim 1, characterized in that: The support frame includes multiple vertical support members arranged at intervals. The multiple vertical support members are connected to the offshore jacket by horizontal support members, and adjacent vertical support members are connected by horizontal connecting members.

3. The inclined ladder boarding facility for offshore platforms according to claim 2, characterized in that: The boarding platform includes a platform frame consisting of vertical support members, horizontal support members, and platform beams at both ends mounted on adjacent horizontal support members. The bottom of the platform frame is covered with a platform steel grating, and a ladder handrail is provided on the platform frame, with the bottom connecting to the top of the short ladder.

4. The inclined ladder boarding facility for offshore platforms according to claim 1, characterized in that: The short ladder includes ladder fixing components arranged on the support frame, and ladder steps are provided between the two ladder fixing components.

5. The inclined ladder boarding facility for offshore platforms according to claim 1, characterized in that: The boarding platform has a detachable chain at the connection point between the top of the short ladder and the boarding platform.

6. The inclined ladder boarding facility for offshore platforms according to claim 1, characterized in that: The inclined ladder includes ladder beams arranged correspondingly between adjacent boarding platforms, and stair treads are set between the two ladder beams. The stair treads include step steel gratings, and the two sides of the step steel gratings are connected to the ladder beams by supporting flat steel.

7. The inclined ladder boarding facility for offshore platforms according to claim 1, characterized in that: The railing is composed of multiple railing posts and railing rods connected together. The railing posts are connected to handrails at the top, and the railing is equipped with kickboards at the bottom.

8. The inclined ladder boarding facility for offshore platforms according to claim 3, characterized in that: The boarding platform is equipped with anti-slip rubber pads at the connection point with the top of the short ladder. The anti-slip rubber pads are fixed to the platform frame by rubber pad support flat steel.

9. The inclined ladder boarding facility for offshore platforms according to claim 1, characterized in that: The bottom of each inclined ladder is equipped with a fall-prevention wire mesh, which is fixed to the bottom of the inclined ladder by a wire mesh support tube.

10. The inclined ladder boarding facility for offshore platforms according to claim 2, characterized in that: Rubber fenders and mooring bollards are installed on the multiple vertical support members.

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