Portable metal embarkation ladder for offshore platform

Abstract

The utility model provides a portable metal embarkation ladder for an offshore platform, which relates to the technical field of ship equipment and is characterized in that a ladder assembly adopts a sectional type detachable structure and comprises an upper ladder assembly and a lower ladder assembly, the upper ladder assembly is fixed on the outer side of a ship board outer plate by adopting a detachable part, and the lower end part of the upper ladder assembly is fixedly connected with the lower ladder assembly; the detachable part comprises a hanging frame, the hanging frame is fixedly arranged on a ship board outer plate, and a plurality of ladder frame hooks are welded to the ladder frame. The metal ladder is simple in structure and manufacture, the sectional ladder assembly, the hanging frame and other structures are matched, the requirement of a metal ladder in a new specification is met, and the total length of the ladder assembly can meet the embarkation requirement; and meanwhile, dismounting and mounting can be conducted according to using requirements, convenience and rapidness are achieved, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of marine equipment technology, specifically to a portable metal boarding ladder for offshore platforms. Background Technology

[0002] With the rapid advancements in production technology, the extraction environment for oil and natural gas is becoming increasingly complex, especially for natural gas, where large deposits are primarily concentrated in cold regions. In frigid areas like Norway, the requirements for extraction equipment and supporting facilities differ from those in other regions when conducting onshore extraction. During rainy or snowy weather, especially blizzards, modules in large extraction facilities, such as electrical equipment rooms, face the risk of large amounts of rain and snow entering the equipment rooms on their entrance and exit platforms. This also causes significant inconvenience for workers entering and exiting, even for short periods. Furthermore, large amounts of snow and ice accumulate on the entrance and exit platforms, potentially blocking access and causing significant adverse effects on daily work and maintenance. Utility Model Content

[0003] The purpose of this utility model is to provide a portable metal boarding ladder for offshore platforms to solve one or more problems mentioned in the background art.

[0004] To achieve the above objectives, a portable metal boarding ladder for offshore platforms is proposed.

[0005] A portable metal boarding ladder for offshore platforms includes a ladder frame with a segmented, detachable structure. The ladder frame comprises an upper ladder frame and a lower ladder frame. The upper ladder frame is detachably fixed to the outer side of the ship's hull, and its lower end is fixedly connected to the lower ladder frame. The detachable component includes a hanger fixedly mounted on the outer side of the ship's hull, and several ladder frame hooks are welded onto the ladder frame. Therefore, the structure is simple, installation and disassembly are convenient, and the ladder frame can be detachably installed on the ship's hull. This design meets the requirements for rigid ladders as specified in regulations, while also ensuring the total length meets boarding requirements.

[0006] As a preferred feasible method, the upper end of the upper ladder frame is connected to the outer hull plating via a limiting assembly. The limiting assembly includes a limiting tube and a limiting pin adapted to the limiting tube. A circular hole adapted to the limiting pin is formed on the outer hull plating. The limiting tube is welded around the circular hole and transitioned using a gasket. The limiting pin passes sequentially through the limiting tube, the outer hull plating, and the upper ladder frame, and abuts against the upper end face of one of the ladder frame hooks. Thus, the limiting assembly further limits the hanger, preventing upward movement during use through the cooperation of the limiting pin and the limiting tube, and preventing downward movement through the ladder frame hooks.

[0007] As a feasible and preferred method, both the upper and lower ladders use square steps with a width of 22mm. The clear distance between the upper and lower ladders is 400mm, and the spacing between the rungs is no more than 300mm. This facilitates the movement of people up and down.

[0008] As a preferred and feasible approach, the ladder hooks are arranged at equal intervals along the length of the ladder, with a spacing of less than or equal to 2500 mm. This further ensures a secure connection between the hanger and the ship's outer plating.

[0009] As a preferred and feasible method, the ladder rack hooks are made of aluminum alloy, and the hook angle is between 20 and 30 degrees. This further ensures that the ladder rack hooks are stably hung on the rack and do not sway unnecessarily.

[0010] As a preferred and feasible method, the pylon is made of round steel with a diameter of 20mm, and a pad is placed between the pylon and the outer plating of the ship for transition. This ensures a safe connection between the pylon and the outer plating of the ship.

[0011] As a preferred feasible method, the pad has a diameter of 40 mm and a thickness of 10 mm.

[0012] As a preferred and feasible approach, the lower end of the upper ladder frame is connected to the lower ladder frame using a bolted structure, which includes bolts and nuts, both of which are made of stainless steel SUS316.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This utility model has a simple structure, which adopts a combination of segmented ladder frame and hanging frame to meet the requirements of metal ladders in the new specifications, and also ensures that the total length of the ladder frame meets the climbing requirements; at the same time, it can be disassembled and installed according to the needs of use, which is convenient, convenient and cost-effective. Attached Figure Description

[0015] Figure 1 A schematic diagram illustrating the application of a portable metal boarding ladder for offshore platforms to the hull of a ship, as provided by this utility model.

[0016] Figure 2 A front view of a portable metal boarding ladder for offshore platforms provided by this utility model;

[0017] Figure 3 A side view of a portable metal boarding ladder for offshore platforms provided by this utility model;

[0018] Figure 4 for Figure 3 Enlarged diagram of D in the middle;

[0019] Figure 5 for Figure 4 A cross-sectional view at angle AA;

[0020] Figure 6 A schematic diagram of the structure of the ladder frame hook in a portable metal boarding ladder for offshore platforms provided by this utility model;

[0021] Figure 7 This utility model provides a schematic diagram of the combination of the upper and lower ladder frames in a portable metal boarding ladder for offshore platforms. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all uses of "first", "second", "third" and "fourth" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first", "second", "third" and "fourth" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0024] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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, they should not be construed as limiting the scope of protection of this utility model.

[0025] like Figure 1 The diagram shown is a layout of a portable metal boarding ladder for offshore platforms, provided by this invention, applied to the hull of a ship. Figure 1C in this application refers to the metal boarding ladder, which includes a ladder frame made of aluminum alloy. Aluminum alloy ladder frames are lightweight and high-strength, making them easy to handle and move. Several ladder frame hooks 7 are welded onto the ladder frame. The ladder frame adopts a segmented, detachable structure, including an upper ladder frame 1 and a lower ladder frame 2. The upper ladder frame 1 is detachably fixed to the outside of the ship's outer plating 5. The lower end of the upper ladder frame 1 is connected to the lower ladder frame 2 using a bolt structure, which includes bolts 9 and nuts, both made of stainless steel SUS316. Therefore, the portable metal boarding ladder of this application adopts a two-section structure. The upper ladder section is detachably fixed to the outside of the hull, and the lower ladder section is bolted to the lower end of the upper ladder section. When needed, it is installed to the side of the ship with the assistance of a deck crane; when not in use, it can be disassembled and stored near the deck boarding position.

[0026] It should be noted that the detachable component includes a hanger 3, which is fixedly mounted on the outer plating 5 of the ship's hull. A pad 8 is also provided between the hanger 3 and the outer plating 5 for transition. Specifically, the pad 8 has a diameter of 40 mm and a thickness of 10 mm.

[0027] like Figure 4 As shown, D is an installation diagram of the fixed node on the ladder frame. The upper end of the upper ladder frame 1 is connected to the outer hull plate 5 via a limiting component. The limiting component includes a limiting circular tube 6 and a limiting pin 4 adapted to the limiting circular tube 6. A circular hole adapted to the limiting pin is opened on the outer hull plate 5. The limiting circular tube 6 is welded around the circular hole. The limiting pin 4 passes through the limiting circular tube 6, the outer hull plate 5, and the upper ladder frame 1 in sequence. The limiting pin 4 abuts against the upper end face of one of the ladder frame hooks 7. The diameter of the limiting pin is slightly smaller than the diameter of the limiting circular tube. Thus, the limiting component further limits the hanger. The cooperation of the limiting pin and the limiting circular tube prevents the hanger from moving upward during use, and the ladder frame hook prevents the hanger from moving downward during use.

[0028] As a preferred embodiment, the ladder hooks 7 of this application are arranged at equal intervals along the length of the ladder frame 3, with a spacing of less than or equal to 2500mm. The ladder hooks 7 are made of aluminum alloy, and the hook angle of the ladder hooks 7 is between 20 and 30 degrees. It should be noted that this application uses round steel with a diameter of 20mm to make the hanging frame 3, and the specific dimensions of the ladder hooks 7 are as follows: the width of the ladder hooks 7 is 50mm, the height is 85mm, the hook angle α of the ladder hooks 7 is 25°, and the radius of the hook angle arc of the ladder hooks is 5mm.

[0029] like Figure 4-5 As shown, both the upper ladder 1 and the lower ladder 2 use square steps with a width of 22mm. The net distance between the upper ladder 1 and the lower ladder 2 is 400mm, and the spacing between their steps is no more than 300mm.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable metal boarding ladder for offshore platforms, comprising a ladder frame, characterized in that, The ladder frame adopts a segmented disassembly structure, including an upper ladder frame (1) and a lower ladder frame (2). The upper ladder frame (1) is fixed to the outside of the ship's outer plate (5) with a detachable part, and the lower end of the upper ladder frame (1) is fixedly connected to the lower ladder frame (2). The detachable component includes a hanger (3), which is fixedly mounted on the outer plating (5) of the ship's side, and a number of ladder hooks (7) are welded onto the ladder.

2. The portable metal boarding ladder for offshore platforms according to claim 1, characterized in that: The upper end of the upper ladder frame (1) is connected to the outer plate of the ship's side (5) through a limiting component. The limiting component includes a limiting round tube (6) and a limiting pin (4) adapted to the limiting round tube (6). A round hole adapted to the limiting pin is opened on the outer plate of the ship's side (5). The limiting round tube (6) is welded around the round hole. The limiting pin (4) passes through the limiting round tube (6), the outer plate of the ship's side (5) and the upper ladder frame (1) in sequence. The limiting pin (4) is abutted against the upper end face of one of the ladder frame hooks (7).

3. A portable metal boarding ladder for offshore platforms according to claim 2, characterized in that: Both the upper ladder (1) and the lower ladder (2) adopt square steps with a width of 22mm. The net distance between the upper ladder (1) and the lower ladder (2) is 400mm, and the spacing between their steps is no more than 300mm.

4. A portable metal boarding ladder for offshore platforms according to claim 3, characterized in that: The ladder hooks (7) are arranged at equal intervals along the length of the ladder, with a spacing of less than or equal to 2500mm.

5. A portable metal boarding ladder for offshore platforms according to claim 4, characterized in that: The ladder hook (7) is made of aluminum alloy, and the hook angle of the ladder hook (7) is between 20 and 30 degrees.

6. A portable metal boarding ladder for offshore platforms according to claim 5, characterized in that: The bracket (3) is made of round steel with a diameter of 20mm. A pad (8) is provided between the bracket (3) and the outer plate of the ship's side (5) for transition.

7. A portable metal boarding ladder for offshore platforms according to claim 6, characterized in that: The pad (8) has a diameter of 40 mm and a thickness of 10 mm.

8. A portable metal boarding ladder for offshore platforms according to claim 7, characterized in that: The lower end of the upper ladder frame (1) is connected to the lower ladder frame (2) by a bolt structure. The bolt structure includes a bolt (9) and a nut. Both the bolt and the nut are made of stainless steel SUS316.

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