A spreader for offshore berthing platforms

Abstract

This utility model relates to the field of offshore pile foundation platform hoisting technology, and particularly to a lifting device for offshore berthing platforms, comprising: a lifting beam with first lifting holes at both ends; two lifting seats connected to the first lifting holes via first lifting straps; and two lifting rods detachably connected to the lifting seats; wherein the bottom surface of the lifting seats is inclined. The inclined design of the lifting seats allows for better geometric matching with the inclined upper surface of the berthing platform. Compared to the horizontal bottom design of traditional lifting devices, this inclined bottom surface effectively conforms to the non-horizontal top surface of the damaged berthing platform, enabling the lifting rods to be set like plumb bobs, ensuring more stable contact between the lifting device and the platform, and significantly improving the adaptability of the lifting device.

Description

Technical Field

[0001] This utility model relates to the field of offshore pile foundation platform hoisting technology, and in particular to a hoisting tool for offshore berthing platforms. Background Technology

[0002] Offshore berthing platforms are widely used in near-shore engineering, port terminals, and offshore operation areas, primarily for ship berthing, cargo loading and unloading, and operational support. However, after long-term operation or exposure to abnormal external forces (such as accidental ship collisions), berthing platforms may experience structural tilting or even partial damage. When a platform is damaged and requires dismantling, lifting equipment is typically used to remove the damaged platform entirely or in sections.

[0003] When lifting platforms at sea, to ensure stability and personnel safety, the conventional practice is to pre-drill holes in the platform and install lifting booms, using multiple lifting points to achieve balanced force distribution. During boom installation, a plumb bob is required to drill holes to ensure stable force distribution. However, damaged platforms are often not level, especially when tilted. Traditional spreader bases are designed with a horizontal surface, making it impossible to achieve adequate contact with the tilted platform. This geometric mismatch not only leads to unstable contact between the spreader and the platform, easily causing uneven force distribution and lifting sway, but also poses significant safety hazards, potentially leading to lifting failure or secondary accidents. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of traditional lifting tools, which cannot adapt to the lifting of inclined berthing platforms and are prone to safety hazards, and to provide a lifting tool for offshore berthing platforms.

[0005] In a first aspect, the present invention provides a spreading device for offshore berthing platforms, comprising:

[0006] A lifting beam, wherein a first lifting hole is provided at each of the two ends of the lifting beam;

[0007] Two lifting seats, each of which is connected to a corresponding first lifting hole via a first lifting strap;

[0008] Two booms, each of which is detachably connected to a corresponding mounting base;

[0009] The bottom surface of the hanging bracket is inclined.

[0010] The lifting device provided by this utility model for offshore berthing platforms features an inclined design on the bottom surface of its lifting base. This design allows for a better geometric fit with the inclined upper surface of the berthing platform. Compared to the horizontal bottom surface design of traditional lifting devices, this inclined bottom surface effectively conforms to the non-horizontal top surface of the damaged berthing platform, enabling the plumb bob to be set and ensuring more stable contact between the lifting device and the platform. This significantly improves the adaptability of the lifting device. The inclined bottom surface of the lifting base fully conforms to the platform, ensuring a stable connection during lifting and avoiding potential safety risks caused by uneven force on the bob.

[0011] Preferably, the angle between the bottom surface and the horizontal plane is 1° to 4°.

[0012] The preferred angle between the bottom surface and the horizontal plane is in the range of 1° to 4°, which can accurately match the actual tilt state of most damaged platforms and ensure the best geometric fit between the bottom surface of the mounting base and the platform surface.

[0013] Preferably, it further includes two second lifting holes, which are located at the bottom of the lifting beam, and both second lifting holes are located between the two first lifting holes.

[0014] The second lifting hole provides additional lifting connection points, allowing the spreader to flexibly select the combination of lifting points according to the specific conditions of the damaged berthing platform (such as weight distribution or tilt). At the same time, the second lifting hole is located between the two first lifting holes, making it suitable for handling smaller or partially damaged platforms, thus enhancing the spreader's adaptability to different platform structures.

[0015] Preferably, the top surface of the lifting beam is provided with two third lifting holes, and the second lifting strap is suspended from the third lifting holes.

[0016] The third lifting hole allows the lifting device to be connected to different types of lifting equipment (such as cranes) or different lifting point positions via the second lifting strap, adapting to the working needs of various lifting equipment and enhancing the versatility of the lifting device.

[0017] Preferably, the first sling is connected to the first lifting hole via a shackle, and the second sling is connected to the third lifting hole via the same shackle.

[0018] The first and second slings are connected to the first and third lifting holes respectively via shackles. As a standardized detachable connector, the shackle is easy to install and remove. In complex marine environments, it allows operators to quickly change or adjust the sling position according to actual needs without complicated tools, significantly shortening the preparation time for lifting operations and improving overall operational efficiency.

[0019] Preferably, the shackle is a 250t bow-shaped shackle.

[0020] Mooring platforms typically have significant weight and volume. The 250t bow-shaped shackle can easily handle the lifting tasks of damaged platforms, ensuring that the connecting parts remain stable under high loads and reducing the risk of connection failure or equipment damage due to overload.

[0021] Preferably, an enlarged portion is provided at the end of the boom away from the mounting base.

[0022] Before lifting the berthing platform, the boom needs to be passed through the drilled hole and connected to the lifting base. An enlarged part is set at the end of the boom away from the lifting base to increase the contact area between the boom and the bottom of the platform, effectively preventing slippage or detachment caused by external forces such as vibration and waves, thereby ensuring the safety of the lifting operation.

[0023] Preferably, the enlarged portion is in the shape of a downward-pointing arrow.

[0024] The expanded section is designed as a downward-pointing arrowhead structure. Its enlarged end can stably contact the bottom of the berthing platform, ensuring hoisting stability, while its narrowed end clearly indicates the plumb bob's position for easy observation by construction personnel. After the hoist passes through the drilled hole in the damaged berthing platform, the hoist can be rotated, for example, by 90°, so that the expanded section can stably lock onto the bottom of the berthing platform.

[0025] Preferably, the top surface of the enlarged portion is an inclined surface.

[0026] With this structural design, the boom can be connected to the base using a boom nut during installation. As the boom nut is rotated, the boom gradually tightens until the enlarged part abuts against the bottom of the damaged platform. The top surface of the enlarged part is sloped, which allows for more stable contact between the enlarged part and the damaged platform, reducing the risk of slippage or displacement.

[0027] Preferably, the lifting beam is equipped with several reinforcing ribs, and the extending direction of the reinforcing ribs is perpendicular to the extending direction of the lifting beam.

[0028] As the core load-bearing component of the lifting system, the lifting beam is equipped with several reinforcing ribs, and their extension direction is perpendicular to the extension direction of the lifting beam, forming a transverse arrangement. This can effectively increase the moment of inertia of the cross section, enhance the lifting beam's ability to resist bending deformation, and improve the durability of the lifting beam.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0030] This utility model provides a spreader for offshore berthing platforms. The bottom surface of the spreader base is designed with an inclination, which enables it to achieve a better geometric match with the upper surface of the inclined berthing platform. Compared with the horizontal bottom surface design of traditional spreaders, this inclination bottom surface can effectively fit the non-horizontal top surface of the damaged berthing platform, realize the plumb bob setting, ensure more stable contact between the spreader and the platform, and significantly improve the adaptability of the spreader. Attached Figure Description

[0031] Figure 1 Front view of the spreader used for berthing platforms at sea;

[0032] Figure 2 Side view of a spreader used for berthing platforms at sea;

[0033] Figure 3 for Figure 1 Enlarged diagram of section A in the middle;

[0034] Figure 4 This is a schematic diagram of a spreader used to lift a berthing platform at sea.

[0035] Marked in the image:

[0036] 1-Lifting beam, 11-First lifting hole, 12-Second lifting hole, 13-Third lifting hole, 14-Reinforcing rib, 2-Lifting seat, 21-Bottom surface, 3-First lifting strap, 4-Lifting rod, 41-Expansion part, 42-Lifting rod nut, 5-Second lifting strap, 6-Shackle. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0038] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0040] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0041] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0042] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0043] Example 1

[0044] When a offshore platform tilts due to an abnormal external impact, the damaged platform must be dismantled first. For example... Figures 1-4 As shown, this embodiment provides a spreader for offshore berthing platforms, including:

[0045] The lifting beam 1 has first lifting holes 11 at both ends; two lifting seats 2, such as... Figure 1 As shown, the lifting base 2 is connected to the corresponding first lifting hole 11 via the first lifting strap 3. In this embodiment, both the lifting beam 1 and the lifting base 2 can be made of Q355B material. The first lifting strap 3 can be a ring-eye lifting strap commonly used in industrial production.

[0046] Furthermore, the first sling 3 can be connected to the first lifting hole 11 via the shackle 6. The shackle 6 can be a 250t bow-shaped shackle.

[0047] The first sling 3 is connected to the first lifting hole 11 via a shackle 6. The shackle 6, as a standardized detachable connector, is easy to install and remove. In complex marine environments, it allows operators to quickly change or adjust the sling position as needed, without the need for complex tools, significantly shortening preparation time for lifting operations and improving overall operational efficiency. Mooring platforms typically have significant weight and volume; the 250t bow-shaped shackle can easily handle lifting tasks on damaged platforms, ensuring the connector remains stable under high loads and reducing the risk of connection failure or equipment damage due to overload.

[0048] Two booms 4, such as Figure 1 As shown, the boom 4 is detachably connected to the corresponding hanger 2.

[0049] Specifically, such as Figure 3 As shown, the boom 4 can be connected to the hanger 2 via the boom nut 42, and the relative position of the boom 4 and the hanger 2 can be adjusted by rotating the boom nut 42.

[0050] Furthermore, such as Figure 1 , Figure 2 , Figure 4 As shown, an enlarged portion 41 is provided at the end of the boom 4 furthest from the lifting base 2. Before lifting the berthing platform, the boom 4 needs to be passed through the drilled hole and connected to the lifting base 2. The enlarged portion 41 at the end of the boom 4 furthest from the lifting base 2 increases the contact area between the boom 4 and the bottom of the platform, effectively preventing slippage or detachment caused by external forces such as vibration and waves, thereby ensuring the safety of the lifting operation.

[0051] Furthermore, such as Figure 2 As shown, the enlarged portion 41 is shaped like a downward-pointing arrow. In this embodiment, the top surface of the enlarged portion 41 is a slope. The downward-pointing arrow-shaped structure of the enlarged portion 41 ensures stable contact between its expanded end and the bottom of the berthing platform, guaranteeing hoisting stability. Its narrowed end clearly indicates the plumb status of the boom 4, facilitating observation by construction personnel. After the boom 4 passes through the drilled hole in the damaged berthing platform, it can be rotated, for example, by 90°, so that the enlarged portion 41 can stably grip the bottom of the berthing platform.

[0052] In this embodiment, the drilled hole on the damaged docking platform can be a rectangular hole. When lowering the boom 4, the support can be lowered slowly first, allowing the boom 4 to descend until it passes through the rectangular hole and the bottom of the support 2 is completely placed on the concrete. At this point, a pry bar can be inserted into the hole of the boom nut 42, and the boom nut 42 can be rotated to raise the boom 4. Before the square section of the boom 4 is inserted into the square hole of the support 2, the boom 4 is rotated until the black paint mark on the boom 4 is aligned with the black paint mark on the support 2. At this point, the arrow-shaped enlargement 41 has rotated, for example, 90°. The boom 4 should be kept still, and the boom nut 42 should be rotated to allow the boom 4 to continue rising and be screwed into the square hole of the support 2. Finally, the boom nut 42 is rotated with a pry bar until the supporting slope of the boom 4 (because the top surface of the enlargement 41 is a slope, it allows the enlargement 41 to make more stable contact with the damaged platform, reducing the risk of sliding or displacement) is in complete contact with the concrete.

[0053] Furthermore, such as Figure 1 As shown, the top surface of the lifting beam 1 is provided with two third lifting holes 13, and the second lifting strap 5 is suspended from the third lifting holes 13. Specifically, the second lifting strap 5 is connected to the third lifting holes 13 via shackles 6. The provision of the third lifting holes 13 allows the lifting device to be connected to different types of lifting equipment (such as cranes) or different lifting point positions via the second lifting strap 5, adapting to the working needs of various lifting equipment and enhancing the versatility of the lifting device.

[0054] Furthermore, such as Figure 1 , Figure 2 As shown, the lifting beam 1 is equipped with several reinforcing ribs 14, the extension direction of which is perpendicular to the extension direction of the lifting beam 1. As the core load-bearing component of the lifting system, the lifting beam 1 is equipped with several reinforcing ribs 14, and their extension direction is perpendicular to the extension direction of the lifting beam 1, forming a transverse arrangement. This can effectively increase the moment of inertia of the cross section, enhance the lifting beam 1's ability to resist bending deformation, and improve the durability of the lifting beam 1.

[0055] The bottom surface 21 of the hanging bracket 2 is inclined, specifically, as shown in... Figure 3 As shown, Figure 3 In this embodiment, ∠α is the angle between the bottom surface 21 and the horizontal plane. The range of ∠α can be 1° to 4°. Preferably, the angle between the bottom surface 21 and the horizontal plane is in the range of 1° to 4°, which can accurately match the actual tilt state of most damaged platforms and ensure that the bottom surface 21 of the hanging base 2 achieves the best geometric fit with the platform surface.

[0056] Furthermore, in this embodiment, for example... Figure 4 As shown, the two hangers 2 can be located on the same horizontal plane. In other embodiments, the two hangers 2 can also be located on different horizontal planes, for example, by setting... Figure 4 The left-hand lifting seat is 2 low, and the right-hand lifting seat is 2 high.

[0057] Furthermore, in this embodiment, the inclination angles of the bottom surfaces 21 of the two hanging brackets 2 can be the same or different.

[0058] The lifting device provided in this embodiment for offshore berthing platforms features an inclined design on the bottom surface 21 of the lifting base 2, enabling better geometric matching with the inclined upper surface of the berthing platform. Compared to the horizontal bottom surface design of traditional lifting devices, this inclined bottom surface 21 can effectively fit the non-horizontal top surface of the damaged berthing platform, achieving a plumb bob setting for the boom 4. This ensures more stable contact between the lifting device and the platform, significantly improving the adaptability of the lifting device. With the inclined bottom surface 21 of the lifting base 2 fully fitting the platform, the lifting device can maintain a stable connection during the lifting process, avoiding potential safety risks caused by uneven force on the boom 4.

[0059] Example 2

[0060] Based on Example 1, this example provides a spreader for offshore berthing platforms, such as... Figure 1 As shown, it also includes two second lifting holes 12, located at the bottom of the lifting beam 1, with both second lifting holes 12 situated between the two first lifting holes 11. In this embodiment, the second lifting holes 12 can be arranged symmetrically along the central axis of the lifting beam 1, and similarly, the first lifting holes 11 can also be arranged symmetrically along the central axis of the lifting beam 1. The first lifting strap 3 can also be connected to the second lifting holes 12 via shackles 6. The setting of the second lifting holes 12 provides additional lifting connection points, allowing the lifting equipment to flexibly select the combination of lifting points according to the specific conditions of the damaged berthing platform (such as weight distribution or tilt); at the same time, the second lifting holes 12, located between the two first lifting holes 11, are suitable for handling smaller or partially damaged platforms, enhancing the adaptability of the lifting equipment to different platform structures.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spreader for a marine offshore platform, characterized in that, include: A lifting beam (1) is provided at both ends of the lifting beam (1); Two lifting seats (2), each of which is connected to the corresponding first lifting hole (11) via a first lifting strap (3); Two lifting rods (4), each of which is detachably connected to a corresponding lifting seat (2); The bottom surface (21) of the hanging bracket (2) is inclined.

2. A spreader for a marine access platform according to claim 1, characterised in that, The angle between the bottom surface (21) and the horizontal plane is 1°~4°.

3. A spreader for a marine access platform according to claim 1, characterised in that, It also includes two second lifting holes (12), which are located at the bottom of the lifting beam (1), and both second lifting holes (12) are located between the two first lifting holes (11).

4. A spreader for a marine access platform according to claim 1, characterised in that, Two third lifting holes (13) are provided on the top surface of the lifting beam (1), and the second lifting strap (5) is suspended from the third lifting holes (13).

5. A spreader for a marine access platform according to claim 4, characterised in that, The first sling (3) is connected to the first lifting hole (11) via a shackle (6), and the second sling (5) is connected to the third lifting hole (13) via the shackle (6).

6. A spreader for a marine access platform according to claim 5, characterised in that, The shackle (6) is a 250t bow-shaped shackle.

7. A spreader for a marine access platform according to claim 1, characterised in that, An enlarged portion (41) is provided at the end of the boom (4) away from the base (2).

8. A spreader for a marine access platform according to claim 7, characterised in that, The enlarged portion (41) is in the shape of a downward-pointing arrow.

9. A spreader for a marine landing platform according to claim 7, characterised in that, The top surface of the enlarged part (41) is an inclined surface.

10. A spreader for a marine landing platform according to claim 1, characterised in that, The lifting beam (1) is equipped with several reinforcing ribs (14), and the extension direction of the reinforcing ribs (14) is perpendicular to the extension direction of the lifting beam (1).

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