Marine transportation binding device for large-diameter single pile foundation

Abstract

The utility model discloses a marine transportation binding device for a large-diameter single pile foundation. According to the marine transportation binding device, the diameter adjustor is arranged, so that the marine transportation binding device can adapt to single pile foundations with different diameters, and overturning and sliding of the single pile foundations are resisted by replacing an original fixed steel inclined supporting piece with the turn buckle assembly; the welding workload of a single-pile foundation shipment site is reduced, the shipment period is shortened, construction is simple, meanwhile, repeated welding and dismounting of the inclined supporting pieces and the stopping pieces are avoided, and the repeated utilization rate of the marine transportation binding device is increased.

Description

Technical Field

[0001] The utility model relates to the field of marine transportation of single pile foundations, in particular to a marine lashing device for large-diameter single pile foundations. Background Art

[0002] The monopile foundation is the most widely used offshore wind turbine foundation type in the world. With the large-scale development of wind turbines and the deep-sea development trend of offshore wind farms, the diameter and weight of monopile foundations are constantly increasing. During the sea transportation process, the monopile foundation will be subject to loads such as its own gravity, wind load, and inertia caused by ship movement. At present, the maximum diameter of a single pile has reached 10m, and the maximum weight of a single pile is close to 2000t. In the future, the monopile foundation will be larger and heavier, which will undoubtedly bring challenges to the marine transportation of the monopile foundation.

[0003] Therefore, in order to ensure the safety of shipping, the marine transportation and tying devices of the monopile foundation must provide sufficient anti-slip and anti-overturning support in addition to sufficient vertical support. The existing technology uses steel stops and diagonal braces to resist the slip and overturning of the monopile foundation. These stops and diagonal braces need to be welded on site and subjected to welding flaw detection inspection after the monopile foundation is loaded and in place. In addition, when the next batch of monopiles is loaded, the stops and diagonal braces of the previous ship must be cut off and new ones welded. This results in a long entire loading period, low reuse rate of stops and diagonal braces, and high transportation costs. At the same time, the existing technology has poor adaptability to monopile foundations of different specifications with a large range of diameter variations, and cannot achieve perfect fit on the surfaces of monopiles of different diameters. Utility Model Content

[0004] The technical problem to be solved by the utility model is to solve the problems that the marine lashing device in the prior art cannot adapt to the single pile foundation with a large diameter range, the single pile foundation has a long loading period and the device has a low reuse rate, and to provide a marine lashing device for a large-diameter single pile foundation.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides a marine lashing device for a large-diameter single pile foundation. The marine lashing device comprises:

[0007] transport frame to support the monopile foundation;

[0008] A bolt assembly is arranged between the transport frame and the ship deck, the upper end of the bolt assembly is connected to the transport frame, and the lower end is connected to the ship deck, and the bolt assembly is used to support the transport frame on the ship deck to prevent overturning;

[0009] A diameter adjuster is arranged between the monopile foundation and the transport frame, and is used to adapt to the diameter change of the monopile foundation.

[0010] Preferably, the transport frame comprises:

[0011] Box-type load-sharing beams are arranged at intervals along the width direction of the ship deck;

[0012] A box-shaped cross beam, horizontally mounted on the box-shaped load-bearing beam;

[0013] Support members are vertically placed on both sides of the upper surface of the box-shaped beam;

[0014] A cushion layer is arranged between the support member and the single pile foundation.

[0015] Preferably, the bolt assembly comprises a basket bolt assembly, the upper end of the basket bolt assembly is connected to the box-type load-bearing beam, and the lower end is connected to the ship deck, and the two ends of the basket bolt assembly are respectively provided with an upper end shackle and a lower end shackle.

[0016] Preferably, a first D-shaped ring is provided on the outer side of the box-type load-sharing beam, a second D-shaped ring is provided on the ship deck, the first D-shaped ring is connected to the upper end shackle, and the second D-shaped ring is connected to the lower end shackle.

[0017] Preferably, the pad layer is fixed to the support member by bolts or rivets; and a rubber layer is provided on the upper surface of the pad layer to increase the surface friction of the pad layer.

[0018] Preferably, the marine lashing device further comprises a stopper, which comprises a welding plate and a plug plate; the welding plate is welded on the ship deck, and the plug plate is used to fill the gap between the welding plate and the box-type load-sharing beam.

[0019] Preferably, a plurality of ribs are provided on the box-shaped cross beam to disperse the force of the box-shaped cross beam.

[0020] Preferably, a plurality of vertical plates are provided on the support member, and the vertical plates are arranged in a vertical direction for aligning and fixing the support member.

[0021] The positive progressive effect of the utility model is that the utility model realizes that the marine lashing can adapt to single pile foundations of different diameters by arranging a diameter adjuster, and adopts a basket bolt assembly to replace the original fixed steel diagonal brace to resist the overturning and sliding of the single pile foundation and adopts a new type of stopper, thereby reducing the welding workload at the loading site of the single pile foundation, shortening the loading period, simplifying the construction, and avoiding repeated welding and removal of the diagonal brace and the stopper, thereby improving the reuse rate of the marine lashing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a cross-sectional front view of a marine lashing device with a diameter adjuster according to a specific embodiment of the utility model.

[0023] Figure 2 It is a side view of a marine lashing device according to a specific embodiment of the utility model.

[0024] Figure 3 It is a cross-sectional front view of a marine lashing device without a diameter adjuster according to a specific embodiment of the utility model.

[0025] Figure 4 It is a schematic diagram of a diameter adjuster according to a specific embodiment of the utility model.

[0026] Figure 5 It is a schematic diagram of a support member according to a specific embodiment of the utility model.

[0027] Figure 6 It is a schematic diagram of a stopper according to a specific embodiment of the utility model.

[0028] Legend: 0, ship deck; 1, transport frame; 2, single pile foundation; 3, bolt assembly; 4, stopper; 5, box-type load-sharing beam; 6, box-type cross beam; 7, support; 8, diameter adjuster; 9, pad layer; 101, first D-ring; 102, second D-ring; 311, upper end shackle; 312, lower end shackle; 611, rib plate; 711, vertical plate. DETAILED DESCRIPTION

[0029] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0030] Example

[0031] See also Figure 1 to Figure 2 This embodiment provides a marine lashing device for a large-diameter monopile foundation. The marine lashing device includes a transport frame 1 for supporting the monopile foundation; a bolt assembly 3 disposed between the transport frame 1 and the ship deck 0, the upper end of the bolt assembly 3 being connected to the transport frame 1 and the lower end being connected to the ship deck 0, the bolt assembly 3 being used to support the transport frame 1 on the ship deck 0 to prevent overturning; and a diameter adjuster 8 disposed between the monopile foundation 2 and the transport frame 1 for adapting to the diameter change of the monopile foundation 2.

[0032] In this embodiment, if Figure 1 As shown, the transport frame 1 includes a box-type load-bearing beam 5, which is arranged at intervals along the width direction of the ship deck 0; a box-type cross beam 6, which is horizontally mounted on the box-type load-bearing beam 5; a support member 7, which is vertically placed on both sides of the upper surface of the box-type cross beam 6; and a wooden layer 9, which is arranged between the support member 7 and the single pile foundation 2.

[0033] In this embodiment, the bolt assembly 3 includes a plurality of turnbuckle bolt assemblies, the upper end of the turnbuckle bolt assembly is connected to the box-type load-bearing beam 5, and the lower end is connected to the ship deck 0. The two ends of the turnbuckle bolt assembly are respectively provided with an upper end shackle 311 and a lower end shackle 312; a first D-shaped ring 101 is provided on the outer side of the box-type load-bearing beam 5, and a second D-shaped ring 102 is provided on the ship deck 0. The first D-shaped ring 101 is connected to the upper end shackle 311, and the second D-shaped ring 102 is connected to the lower end shackle 312. Specifically, the turnbuckle bolt assembly can adjust the length within a certain range, and the two ends thereof are respectively provided with shackles to connect with other objects, which is an effect that other bolt assemblies cannot achieve; in this embodiment, the upper end shackle 311 is connected to the first D-shaped ring 101 on the box-type load-bearing beam 5 and the lower end shackle 312 is connected to the second D-shaped ring 102 on the ship deck 0 and tightened to prevent the box-type load-bearing beam 5 from tipping over during transportation. This embodiment avoids the need for on-site welding and fixing of the steel bracing members after loading by using an adjustable basket bolt assembly, thereby reducing the workload of workers for on-site welding and increasing the reuse rate of the bolt assembly 3.

[0034] In this embodiment, if Figure 3 As shown, the cushion layer 9 is fixed to the support 7 by bolts or rivets, and a rubber layer is provided on the upper surface of the cushion layer 9 to increase the surface friction of the cushion layer 9; specifically, the upper surface of the cushion layer 9 is in an arc shape, and the diameter of the arc is consistent with the diameter of the monopile foundation 2, so as to ensure that the surface of the monopile foundation 2 and the cushion layer 9 are perfectly fitted, which helps to protect the monopile foundation 2 during the sea transportation. At the same time, in order to increase the surface friction of the cushion layer 9, the present embodiment also provides a rubber layer on the surface of the cushion layer 9 to increase the surface friction, which can prevent the monopile foundation 2 from moving and ensure the safety and stability of its transportation.

[0035] In actual situations, the diameters and weights of different monopile foundations 2 are different. In order to adapt to the marine transportation of different monopile foundations 2 and avoid the low reuse rate of marine lashing devices, this embodiment uses diameter adjusters 8 of different thicknesses to adapt to monopile foundations 2 of different diameters, such as Figure 4As shown, the diameter adjuster 8 is fixed to the support member 7 with bolts. Specifically, when the diameter of the single pile foundation 2 is small, in order to better fit the single pile foundation 2, the cushion layer 9 will become thicker. If the cushion layer 9 is too thick, the bolts or rivets fixing the cushion layer 9 will be subjected to excessive force, and the cushion layer 9 cannot be well fixed to the support member 7, thereby affecting the safety and stability of the single pile foundation 2 during marine transportation, and also increasing the construction workload of workers at the loading site. Therefore, in order to avoid the cushion layer 9 being too thick, the present embodiment can adapt to a smaller diameter by selecting a thicker diameter adjuster 8, without replacing the entire transport frame 1. When the diameter of the single pile foundation 2 is too large, a smaller diameter adjuster 8 can be used or the diameter adjuster 8 can be directly removed, so that the purpose of adapting to different diameters can be achieved by replacing the diameter adjuster 8, reducing the consumption of manpower and material resources, and improving the work efficiency of loading.

[0036] In this embodiment, a plurality of ribs 611 are provided on the box-type cross beam 6 to disperse the force acting on the box-type cross beam 6; Figure 5 As shown, a plurality of vertical plates 711 are provided on the support member 7, and the vertical plates 711 are arranged in a vertical direction, and are used to align and fix the support member 7. Specifically, the monopile foundation 2 will be subjected to loads such as its own gravity, wind load, and inertia force caused by ship movement during marine transportation. In order to avoid stress concentration, this embodiment provides a plurality of ribs 611 on the box-type beam 6 to disperse the force of the box-type beam 611; and a plurality of vertical plates are provided on the support member 7 to better transfer the load, disperse the force, and align and fix the support member 7 at the same time.

[0037] In this embodiment, if Figure 6 As shown, the marine lashing device also includes a stopper 4, which includes a welding plate 412 and a plug plate 411; the welding plate 412 is welded on the ship deck 0, and the plug plate 411 is used to fill the gap between the welding plate 412 and the box-type load-bearing beam 5. Specifically, the welding plate 412 is welded to the ship deck 0 in advance, and a plurality of grooves are designed on the welding plate 412 in order to increase the weld area and thus improve the bearing capacity of the stopper. The welding position of the welding plate 412 on the ship deck 0 can be determined according to the loading layout diagram, for example, it is welded in advance at a distance of about 100 mm from the box-type load-bearing beam 5. After the single pile foundation 2 is loaded on the ship, the plug plate 411 is plugged in the gap between the box-type load-bearing beam 5 and the welding plate 412. However, in actual situations, plug plate 411 cannot be exactly the same size as the gap. In this case, it is only necessary to find some thin steel sheets to fill the remaining gap and plug it tightly. There is no need to re-weld welding plate 412, which reduces the welding workload of workers, shortens the loading period, simplifies construction, and avoids repeated welding and removal of diagonal braces and stoppers, thereby improving the reuse rate of the device.

[0038] In this embodiment, a marine lashing device for a large-diameter monopile foundation is provided. The marine lashing device can adapt to monopile foundations of different diameters by setting a diameter adjuster, and by using a basket bolt assembly to replace the original fixed steel diagonal brace to resist the slippage of the monopile foundation and a new type of stopper to prevent slippage, the welding workload at the loading site of the monopile foundation is reduced, the loading period is shortened, the construction is simple, and the repeated welding and removal of the diagonal brace and the stopper are avoided, thereby improving the reuse rate of the marine lashing device.

[0039] The working principle of the utility model is: the transport frame 1 and the monopile foundation 2 are transported and shipped to the ship deck 0 by SPMT (Self-Propelled Modular Transporter), and the transport frame 1 is placed on the ship deck 0. According to the diameter of the monopile foundation 2, a corresponding size of pads 9 are placed on the support 7 on the transport frame 1 and fixed to the support 7 by bolts or rivets, and the monopile foundation 2 is placed on the pads 9. The marine lashing device is provided with a diameter adjuster 8 between the support 7 and the pads 9 of the transport frame 1. The diameter adjuster 8 can be adapted to the monopile foundation 2 of different diameters according to the different diameters of the monopile foundation 2, and the diameter adjuster 8 of different thicknesses can be used to ensure the transportation stability of the monopile foundation 2. After the monopile foundation 2 is loaded, the box-type load-sharing beam 5 and the ship deck 0 are tightened and connected by the basket bolt assembly 3 to provide a pre-tightening force to prevent the box-type load-sharing beam 5 from overturning. D-shaped rings 101 and 102 are pre-welded on the box-type sub-load beam 5 and the ship deck 0, and the two ends of the basket bolt assembly 3 are connected to the D-shaped rings 101 and 102 respectively; and then the gap between the box-type sub-load beam 5 and the welding plate 412 of the stopper 4 is filled with a plug plate 411, and the welding plate 412 is pre-welded on the ship deck 0. If there is still a gap, it is only necessary to find some thin steel plates to fill it up, so as to fix the transport frame 1 carrying the monopile foundation 2 on the ship deck 0 to prevent the transport frame 1 from moving on the ship deck 0.

[0040] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A marine lashing device for a large diameter single pile foundation, characterized in that: include: transport frame to support the monopile foundation; A bolt assembly is arranged between the transport frame and the ship deck, the upper end of the bolt assembly is connected to the transport frame, and the lower end is connected to the ship deck, and the bolt assembly is used to support the transport frame on the ship deck to prevent overturning; A diameter adjuster is arranged between the monopile foundation and the transport frame, and is used to adapt to the diameter change of the monopile foundation.

2. The marine lashing device for a large diameter single pile foundation according to claim 1, characterized in that: The transport framework comprises: Box-type load-sharing beams are arranged at intervals along the width direction of the ship deck; A box-shaped cross beam, horizontally mounted on the box-shaped load-bearing beam; Support members are vertically placed on both sides of the upper surface of the box-shaped beam; A cushion layer is arranged between the support member and the single pile foundation.

3. The marine lashing device for a large diameter single pile foundation according to claim 2, characterized in that: The bolt assembly comprises a basket bolt assembly, the upper end of the basket bolt assembly is connected to the box-type load-sharing beam, and the lower end is connected to the ship deck. The two ends of the basket bolt assembly are respectively provided with an upper end shackle and a lower end shackle.

4. The marine lashing device for a large diameter single pile foundation according to claim 3, characterized in that: A first D-shaped ring is disposed on the outer side of the box-type load-sharing beam, a second D-shaped ring is disposed on the ship deck, the first D-shaped ring is connected to the upper end shackle, and the second D-shaped ring is connected to the lower end shackle.

5. The marine lashing device for a large diameter single pile foundation according to claim 2, characterized in that: The pad layer is fixed on the support member by bolts or rivets; and a rubber layer is arranged on the upper surface of the pad layer to increase the surface friction of the pad layer.

6. The marine lashing device for a large diameter single pile foundation according to claim 2, characterized in that: The marine lashing device further comprises a stopper, wherein the stopper comprises a welding plate and a plug plate; The welding plate is welded to the ship deck, and the plug plate is used to fill the gap between the welding plate and the box-type load-sharing beam.

7. The marine lashing device for a large diameter single pile foundation according to claim 2, characterized in that: A plurality of ribs are arranged on the box-shaped cross beam to disperse the force of the box-shaped cross beam.

8. The marine lashing device for a large diameter single pile foundation according to claim 2, characterized in that: A plurality of vertical plates are arranged on the support member, and the vertical plates are arranged in a vertical direction and are used for aligning and fixing the support member.

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