Lifting device for offshore wind turbine foundation construction

Abstract

The utility model relates to the technical field of lifting devices, and discloses a lifting device for offshore wind turbine foundation construction, which comprises a ship body, a bearing platform is fixedly connected to the top of the ship body, a lifting assembly is arranged at the top of the bearing platform, supporting platforms are fixedly connected to two sides of the bearing platform, and balancing assemblies are arranged on the side walls of the supporting platforms. The balance assembly comprises a plurality of supporting arms, the side walls of the supporting arms are fixedly connected with second connecting bases, a power assembly is arranged between the supporting arms, a movable arm is arranged at the bottom of one end of each supporting arm, and a floating assembly is arranged at the bottom of each movable arm. In the utility model, the floating plate moves up and down along with the shaking of the ship body in stormy waves to drive the movable arm to extrude the push rod. A pressure sensor in the first hydraulic device monitors stress in real time, the telescopic length of the push rod is automatically adjusted, the self-adaptive leveling effect of the lifting device is achieved, the problems that the lifting device shakes and operation is unstable due to stormy waves are solved, and the safety and stability of offshore lifting operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and in particular to a lifting device for offshore wind turbine foundation construction. Background Technology

[0002] With the increasing global demand for clean energy, offshore wind power, as a highly promising renewable energy development method, has developed rapidly in recent years. In the construction of offshore wind turbine foundations, lifting equipment is an indispensable key piece of equipment, responsible for the hoisting and installation of wind turbine foundation components and parts. The offshore construction environment is complex and changeable, and factors such as wind, waves, and tides place extremely high demands on the safety and stability of lifting operations. Therefore, the development of reliable lifting equipment for offshore wind turbine foundation construction is of great significance for ensuring the smooth progress of offshore wind power projects and improving construction efficiency and quality.

[0003] Existing lifting devices used for offshore wind turbine foundation construction mostly employ traditional fixed support structures and simple hoisting systems. When facing complex sea conditions, they typically rely on increasing counterweights or expanding the base area to maintain stability. The protection of wind turbine components during hoisting is also relatively weak, often relying solely on simple rope binding for fixation. The mechanical structure of these lifting devices lacks self-adjusting capabilities, making it difficult to dynamically adjust balance in windy and wave environments. Furthermore, the protection measures for wind turbine components are insufficient, making it unable to effectively withstand the impact of sea winds.

[0004] However, current lifting devices used for offshore wind turbine foundation construction have significant drawbacks. Under complex sea conditions, traditional fixed structures cannot adjust the balance of the lifting device in real time according to changes in wind and waves, making them prone to swaying or even overturning, which seriously threatens operational safety and construction stability. At the same time, simple component fixing methods are difficult to withstand the strong impact of sea winds, frequently causing collisions, displacements, or even damage to components during hoisting. This not only increases construction costs but also greatly affects the construction progress and quality of offshore wind power projects. Therefore, a new lifting device for offshore wind turbine foundation construction is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a lifting device for offshore wind turbine foundation construction, which aims to improve the problem of swaying and unstable operation of the lifting device caused by wind and waves in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A lifting device for offshore wind turbine foundation construction includes a hull, a support platform fixedly connected to the top of the hull, a hoisting assembly on the top of the support platform, support platforms fixedly connected to both sides of the support platform, and balancing components on the side walls of the support platforms.

[0008] The balancing assembly includes multiple support arms arranged in a rectangular array on the side of the support platform. Each support arm has a connecting seat two fixedly connected to its side wall, and the side walls of the connecting seats two are also fixedly connected to the side wall of the support platform. A power assembly is arranged between the support arms to push the support arms to unfold. A movable arm is provided at the bottom of one end of each support arm. The top outer wall of the movable arm is rotatably connected between the side walls of the support arm, and the bottom end of each support arm is rotatably connected to the middle section of the outer wall of the movable arm. A floating assembly is provided at the bottom of the movable arm.

[0009] As a further description of the above technical solution:

[0010] The power assembly includes a hydraulic actuator, a connecting seat at the bottom of the hydraulic actuator, a side wall of the connecting seat fixedly connected to the side wall of the support platform, a bottom of the hydraulic actuator rotatably connected inside the connecting seat, and a push rod fixedly connected to the output end of the hydraulic actuator, with one end of the push rod rotatably connected between the top support arm side wall and the support arm side wall.

[0011] As a further description of the above technical solution:

[0012] The floating assembly includes a float plate, a rotating platform is fixedly connected to the top center of the float plate, and the bottom outer wall of the movable arm is rotatably connected to the inside of the rotating platform.

[0013] As a further description of the above technical solution:

[0014] The hoisting assembly includes a crane, the bottom of which is fixedly connected to the top of the support platform, and a boom is fixedly connected inside the crane, with a connecting platform provided at one end of the boom.

[0015] As a further description of the above technical solution:

[0016] A fixed box is fixedly connected to the bottom of the connecting platform. A hook is fixedly connected to the center of the bottom of the fixed box. A left-right symmetrical guide platform is fixedly connected to the top of the inner wall of the fixed box. A left-right symmetrical movable plate is slidably connected to the bottom of the guide platform.

[0017] As a further description of the above technical solution:

[0018] Hydraulic actuators are installed on both the left and right sides inside the fixed box. The bottom of the hydraulic actuators is fixedly connected to the top of the inner wall of the fixed box, and the output end of the movable plate is fixedly connected to one side of the side wall of the movable plate.

[0019] As a further description of the above technical solution:

[0020] A first connecting rod is rotatably connected to the center of the top of the inner wall of the fixed box. Both ends of the first connecting rod are rotatably connected to the second connecting rod, and the other end of the second connecting rod is rotatably connected to the center of the bottom of the movable plate.

[0021] As a further description of the above technical solution:

[0022] Support rods are fixedly connected to both sides of the bottom of the movable plate. The bottom of the fixed box is provided with symmetrical protective plates. The outer walls of the support rods are fixedly connected to the inside of the protective plates. Multiple turbulence grooves are opened on the side walls of the protective plates, and the turbulence grooves are distributed in an array.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the hydraulic actuator pushes the push rod forward, causing the support arm to deflect and the movable arm to unfold. The rotating platform causes the float to sink into the seawater, and the float cylinder inside the float floats on the sea surface. When encountering wind and waves, the float moves up and down with the hull, causing the movable arm to squeeze the push rod. The pressure sensor inside the hydraulic actuator monitors the force in real time and automatically adjusts the extension and retraction length of the push rod, achieving the effect of adaptive leveling of the lifting device. This solves the problem of swaying and instability of the lifting device caused by wind and waves, and improves the safety and stability of offshore lifting operations.

[0025] 2. In this utility model, the components are first fixed, and then the hydraulic device pulls the movable plate. Through the linkage transmission, the support rod drives the protective plate to move towards the middle and stops after contacting the components. During the hoisting process, the sea breeze flows away through the deflection groove of the protective plate, avoiding the sea breeze from directly blowing on the components and causing them to be damaged. This solves the problem that components are easily damaged by sea breeze during sea hoisting and improves the safety and integrity of component transportation. Attached Figure Description

[0026] Figure 1 This is a perspective view of a lifting device for offshore wind turbine foundation construction proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the support platform structure of a lifting device for offshore wind turbine foundation construction proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the support arm structure of a lifting device for offshore wind turbine foundation construction proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the protective plate structure of a lifting device for offshore wind turbine foundation construction proposed in this utility model;

[0030] Figure 5 This is a cross-sectional schematic diagram of the fixed box of a lifting device for offshore wind turbine foundation construction proposed in this utility model.

[0031] Legend:

[0032] 1. Hull; 2. Support platform; 3. Crane; 4. Boom; 5. Support platform; 6. Connecting seat one; 7. Hydraulic unit one; 8. Push rod; 9. Connecting seat two; 10. Support arm; 11. Movable arm; 12. Rotating platform; 13. Float; 14. Connecting platform; 15. Fixed box; 16. Hook; 17. Hydraulic unit two; 18. Movable plate; 19. Guide platform; 20. Connecting rod one; 21. Connecting rod two; 22. Support rod; 23. Protective plate; 24. Turbulence channel. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1-3 This utility model provides an embodiment of a lifting device for offshore wind turbine foundation construction, including a hull 1. The hull 1 is the carrier of the entire offshore wind turbine foundation construction lifting device. The hull 1 is existing technology and will not be described in detail here. A bearing platform 2 is fixedly connected to the top of the hull 1. The bearing platform 2 is made of low alloy high-strength structural steel and the surface is treated with anti-rust. It is used to install hoisting components and support balancing components to provide a stable working platform for lifting operations. The top of the bearing platform 2 is equipped with hoisting components for hoisting wind turbine foundation components. Support platforms 5 are fixedly connected to both sides of the bearing platform 2. The support platforms 5 are also made of low alloy high-strength structural steel and are used to install balancing components to enhance the stability of the lifting device during offshore operations. Balancing components are provided on the side walls of the support platforms 5.

[0035] The balancing assembly includes multiple support arms 10, which are made of high-strength alloy steel, possessing high strength and rigidity, and coated with anti-rust paint to transmit and distribute force. The support arms 10 are arranged in a rectangular array along the sides of the support platform 2. Each support arm 10 has a connecting seat 9 fixedly connected to its sidewall, providing a stable connection point. The connecting seat 9 is also fixedly connected to the sidewall of the support platform 2. A power assembly is installed between the support arms 10, employing a hydraulic drive system. This power assembly is used to extend the support arms 10, enabling the balancing assembly to switch between different working states. One end of each support arm 10... The unit is equipped with a movable arm 11, forged from alloy steel. The top outer wall of the movable arm 11 is rotatably connected to the side wall of the support arm 10, allowing it to rotate around the connection point. One end of each bottom support arm 10 is rotatably connected to the middle section of the outer wall of the movable arm 11, forming a movable connection structure that facilitates angle adjustment of the movable arm 11 according to working conditions. A floating component is installed at the bottom of the movable arm 11 to adapt to sea surface fluctuations. The power component includes a hydraulic actuator 7, which is a piston-type hydraulic pump with an internal pressure sensor. The hydraulic actuator 7 is existing technology and will not be described in detail here. A connecting seat is installed at the bottom of the hydraulic actuator 7. 6. The connecting seat 6 is fixedly connected to the side wall of the bearing platform 2, allowing the hydraulic actuator 7 to swing at a certain angle. The bottom of the hydraulic actuator 7 is rotatably connected inside the connecting seat 6. A push rod 8 is fixedly connected to the output end of the hydraulic actuator 7. The push rod 8 is made of high-strength alloy steel. One end of the push rod 8 is rotatably connected between the side walls of the top support arm 10 to transmit the power of the hydraulic actuator 7. The floating assembly includes a float 13, which is made of high-density polyethylene material and has a sealed float inside, providing good buoyancy and weather resistance. A rotating platform 12 is fixedly connected to the top center of the float 13. The bottom of the movable arm 11... The outer wall is rotatably connected inside the rotating platform 12, and can rotate flexibly to adapt to forces in different directions. The hoisting assembly includes a crane 3. The main body of the crane 3 is welded from high-strength steel and has multiple hydraulic and control systems inside. The bottom of the crane 3 is fixedly connected to the top of the bearing platform 2. The crane 3 has a boom 4 fixedly connected inside, which has telescopic and rotation functions. One end of the boom 4 is equipped with hoisting slings. The crane 3 and boom 4 are existing technologies and will not be described in detail here. One end of the boom 4 is equipped with a connecting platform 14, which is made of cast steel and steel cable and is used to connect the hoisting slings to realize the hoisting of wind turbine foundation components.

[0036] Reference Figure 4 and Figure 5A fixed box 15 is fixedly connected to the bottom of the connecting platform 14. The fixed box 15 is made of high-strength alloy steel and is used to house the internal protective components and provide installation support for the hook 16. The hook 16 is fixedly connected to the center of the bottom of the fixed box 15. The hook 16 is forged from special alloy steel and heat-treated to improve its strength and toughness. It is used to hook and hang fan components. A symmetrical guide platform 19 is fixedly connected to the top of the inner wall of the fixed box 15. The guide platform 19 is made of stainless steel and has a T-shaped groove machined on its bottom to constrain the movement trajectory of the movable plate 18 and ensure its smooth sliding. A symmetrical movable plate 18 is slidably connected to the bottom of the guide platform 19. The movable plate 18 is made of stainless steel and heat-treated with a wear-resistant surface. It is used to receive the driving force of the hydraulic actuator 17 and transmit the motion. Hydraulic actuators 17 are set on both the left and right sides inside the fixed box 15. The hydraulic actuator 17 is a double-acting hydraulic cylinder used to provide power to push the movable plate 18 to move. The hydraulic actuator 17 is existing technology and will not be described in detail here. The hydraulic actuator 17 is fixedly connected to the top of the inner wall of the fixed box 15 at its bottom. The output end of the movable plate 18 is fixedly connected to one side of the side wall of the movable plate 18. A connecting rod 20 is rotatably connected to the center of the top of the inner wall of the fixed box 15. Both ends of the connecting rod 20 are rotatably connected to the connecting rod 21. The other end of the connecting rod 21 is rotatably connected to the center of the bottom of the movable plate 18. The three of them form a linkage mechanism to achieve synchronous displacement of the movable plate 18. Support rods 22 are fixedly connected to both sides of the bottom of the movable plate 18. The support rods 22 are made of seamless steel pipes and are used to transmit the movement of the movable plate 18 and support the protective plate 23. The bottom of the fixed box 15 is provided with symmetrical protective plates 23. The protective plates 23 are made of weathering steel and have the ability to resist seawater corrosion and wind. The outer walls of the support rods 22 are fixedly connected to the inside of the protective plates 23. The side walls of the protective plates 23 are machined with multiple turbulence grooves 24. The turbulence grooves 24 are distributed in an array to change the direction of airflow and reduce the impact of sea wind on the hoisted parts.

[0037] Working principle: When using this offshore wind turbine foundation construction lifting device to hoist wind turbine components, the personnel first fix the wind turbine components and then connect the hook to the hook 16 below the connecting platform 14. Then, the hydraulic device 17 inside the fixing box 15 pulls the movable plates 18 on both sides to move towards the center. At the same time, the movable plates 18 move and pull the connecting rod 21 at the bottom to deflect, which in turn causes the connecting rod 20 in the center to rotate, thus achieving synchronous displacement at both ends. This drives the support rods 22 on both sides of the top to move towards the center. The displacement of the support rods 22 then drives the protective plate 23 to move towards the center as well. When the side wall of the protective plate 23 contacts the wind turbine components, the hydraulic device 17 stops working and the protective plate 23 stops moving. Then, the crane 3 drives the boom 4 to lift the wind turbine components. During the lifting process, the sea breeze blows onto the surface of the protective plate 23 and flows away through the turbulence channel 24, thus preventing the sea breeze from blowing the wind turbine components and causing damage.

[0038] In the early stages of hoisting, the output ends of hydraulic actuators 7 on the side walls of the support platforms 5 on both sides of the bearing platform 2 push the push rod 8 forward. The displacement of the push rod 8 then causes the connection point between it and the support arm 10 to move forward. The displacement of the connection point causes the support arm 10 to deflect around the connecting seat 9, which in turn causes the movable arm 11 to unfold. The rotating platform 12 at its bottom drives the float plate 13 to move downward. When the bottom of the float plate 13 contacts the seawater, the float inside floats on the sea surface. When encountering wind and waves that cause the hull 1 to sway, the float plate 13 will move up and down with the direction of swaying, which in turn causes the movable arm 11 to move up or down, thus squeezing the push rod 8. The pressure sensor inside the hydraulic actuator 7 monitors the force on the movable arm 11 in real time and automatically adjusts the extension and retraction length of the push rod 8, achieving adaptive leveling and stability of the lifting device and reducing the impact of wind and waves on the lifting operation.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 lifting device for offshore windmill foundation construction, comprising a hull (1), characterized in that: The top of the hull (1) is fixedly connected to a support platform (2), the top of the support platform (2) is provided with a hoisting assembly, and the two sides of the support platform (2) are fixedly connected to support platforms (5), and the side walls of the support platforms (5) are provided with balancing components. The balancing assembly includes multiple support arms (10), which are arranged in a rectangular array on the side of the support platform (2). Each support arm (10) has a connecting seat (9) fixedly connected to its side wall. The connecting seat (9) is fixedly connected to the side wall of the support platform (2). A power assembly is provided between the support arms (10) for pushing the support arms (10) to unfold. A movable arm (11) is provided at the bottom of one end of each support arm (10). The top outer wall of the movable arm (11) is rotatably connected between the side walls of the support arms (10). The bottom end of each support arm (10) is rotatably connected to the middle section of the outer wall of the movable arm (11). A floating assembly is provided at the bottom of the movable arm (11).

2. A lifting device for offshore windmill foundation construction according to claim 1, characterized in that: The power assembly includes a hydraulic actuator (7), a connecting seat (6) is provided at the bottom of the hydraulic actuator (7), the side wall of the connecting seat (6) is fixedly connected to the side wall of the support platform (2), the bottom of the hydraulic actuator (7) is rotatably connected inside the connecting seat (6), and a push rod (8) is fixedly connected to the output end of the hydraulic actuator (7), one end of the push rod (8) is rotatably connected between the side wall of the top support arm (10).

3. A lifting device for offshore windmill foundation construction according to claim 1, characterized in that: The floating assembly includes a float plate (13), a rotating platform (12) is fixedly connected to the top center of the float plate (13), and the bottom outer wall of the movable arm (11) is rotatably connected inside the rotating platform (12).

4. A lifting device for offshore windmill foundation construction according to claim 1, characterized in that: The hoisting assembly includes a crane (3), the bottom of which is fixedly connected to the top of the support platform (2), and a boom (4) is fixedly connected inside the crane (3), with a connecting platform (14) provided at one end of the boom (4).

5. A lifting device for offshore windmill foundation construction according to claim 4, characterized in that: The bottom of the connecting platform (14) is fixedly connected to a fixed box (15), and a hook (16) is fixedly connected to the center of the bottom of the fixed box (15). The top of the inner wall of the fixed box (15) is fixedly connected to a left-right symmetrical guide platform (19), and the bottom of the guide platform (19) is slidably connected to a left-right symmetrical movable plate (18).

6. A lifting device for offshore windmill foundation construction according to claim 5, characterized in that: Hydraulic actuators (17) are provided on both the left and right sides inside the fixed box (15). The bottom of the hydraulic actuators (17) is fixedly connected to the top of the inner wall of the fixed box (15), and the output end of the movable plate (18) is fixedly connected to one side of the side wall of the movable plate (18).

7. A lifting device for offshore windmill foundation construction according to claim 6, characterized in that: A connecting rod 1 (20) is rotatably connected to the top center of the inner wall of the fixed box (15). Both ends of the connecting rod 1 (20) are rotatably connected to the connecting rod 2 (21). The other end of the connecting rod 2 (21) is rotatably connected to the bottom center of the movable plate (18).

8. A lifting device for offshore windmill foundation construction according to claim 7, characterized in that: The movable plate (18) is fixedly connected to support rods (22) on both sides of the bottom. The fixed box (15) is provided with left and right symmetrical protective plates (23) at the bottom. The outer walls of the support rods (22) are fixedly connected to the inside of the protective plates (23). The side walls of the protective plates (23) are provided with multiple turbulence grooves (24), which are distributed in an array.

Images