A hoisting device for offshore wind power

Abstract

This utility model discloses a lifting device for offshore wind power, relating to the field of lifting device technology. The device includes an assembly platform, a main tower mounted on one side of the top of the assembly platform, a traveling mechanism mounted on the other side of the top of the assembly platform, a secondary tower mounted on top of the traveling mechanism, mounting frames mounted on top of both the main and secondary towers, and a winding mechanism mounted on top of each mounting frame. Steel strands are mounted on the outside of the winding mechanisms, with a lifting beam at one end of each steel strand. This utility model uses an assembly platform as a carrier to construct the tower body horizontally. Compared to traditional vertical construction, it eliminates the need for large-scale support structures erected at high altitudes, significantly reducing high-risk operations such as high-altitude welding and assembly, and lowering safety risks for construction workers. Simultaneously, the horizontal configuration makes it easier to position and align the tower sections, reducing rework caused by precision deviations in high-altitude operations and improving the stability and safety of the construction process.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, specifically a lifting device for offshore wind power. Background Technology

[0002] Offshore wind power lifting equipment is the core equipment for installing and maintaining offshore wind turbine generators. It is usually installed on the deck of large self-elevating or floating vessels (i.e., wind turbine installation vessels). In order to overcome the harsh offshore operating environment, it has extremely high lifting height (up to hundreds of meters above the deck) and lifting capacity (up to thousands of tons) to accurately lift huge towers, blades, nacelles and other components to designated positions at high altitudes.

[0003] Existing equipment mostly adopts vertical tower construction, which requires the construction of large high-altitude support structures. This results in a high proportion of high-risk operations such as high-altitude welding and assembly, posing significant safety risks to construction workers. Furthermore, the vertical tower structure is difficult to position and align in sections, which can easily lead to rework due to precision deviations in high-altitude operations, reducing construction stability and efficiency.

[0004] Based on this, a lifting device for offshore wind power is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this utility model is to provide a lifting device for offshore wind power, in order to solve the problem that the background technology mostly adopts vertical construction of tower bodies, which requires the construction of large high-altitude support structures, resulting in a high proportion of high-risk operations such as high-altitude welding and assembly, and high safety risks for construction personnel.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lifting device for offshore wind power includes an assembly platform, a main tower is provided on one side of the top of the assembly platform, a traveling mechanism is provided on the other side of the top of the assembly platform, and a secondary tower is provided on the top of the traveling mechanism.

[0008] Both the main tower and the secondary tower are equipped with mounting frames at their tops. Each mounting frame is equipped with a winding mechanism at its top. A steel strand is installed on the outside of the winding mechanism. A lifting beam is installed at one end of the steel strand, and a hook mechanism is installed at the bottom of the lifting beam.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative embodiment: the hook mechanism includes a hook body, which is fixedly installed at the bottom of the lifting beam. Slide grooves are provided on both outer sides of the hook body, and toothed rings are slidably installed on both outer sides of the hook body through the slide grooves. A first protective shell is provided on both outer sides of the hook body and outside the toothed rings.

[0011] In one alternative: a roller is rotatably mounted between one end of the two toothed rings.

[0012] In one alternative: a baffle is rotatably mounted on the outside of the hook body via a pin, and a handle is fixedly connected to the outside of the baffle.

[0013] In one alternative: a second gear is fixedly installed inside the baffle, and a first gear is rotatably installed on both sides of the hook body, with the first gear meshing with the gear ring and the first gear meshing with the second gear.

[0014] In one alternative: a second protective shell is fixedly installed on one side of the hook body, a spring is installed inside the second protective shell, a connecting rod is fixedly connected to the outside of the handle, and one end of the connecting rod extends into the inside of the second protective shell, and one end of the spring is fixedly connected to the connecting rod.

[0015] In one alternative: a first counterweight is provided on the top of the assembly platform and on one side of the main tower, a steel cable is provided on the top of the first counterweight, and one end of the steel cable is connected to the mounting frame on the top of the main tower.

[0016] In one alternative: a second counterweight is provided at the top of the walking mechanism and on one side of the secondary tower.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model uses an assembly platform as a carrier to construct the tower body horizontally. Compared with traditional vertical construction, it eliminates the need for large-scale support structures at high altitudes, significantly reducing high-risk operations such as high-altitude welding and assembly, and lowering the safety risks for construction personnel. At the same time, the horizontal state makes it easier to position and align the tower body segments, reducing rework caused by precision deviations in high-altitude operations and improving the stability and safety of the construction process. The dual-point lifting mode of the main tower crane at the top and the auxiliary tower crane at the bottom, combined with the precise control of the steel strand tension by the winding mechanism and the horizontal movement of the auxiliary tower by the traveling mechanism, enables the tower body to be smoothly rotated around the lifting point of the main tower, avoiding the tilting and swaying problems when lifting heavy tower bodies with a traditional single crane. The rotation process does not require frequent adjustment of the lifting points or replacement of equipment.

[0019] 2. The hook mechanism of this utility model uses the transmission cooperation of toothed ring-first gear-second gear, combined with the reset action of spring. Pressing the handle can quickly open the baffle, and after releasing it will automatically lock the hook opening, without the need for manual additional fixation; the toothed ring and the baffle provide double protection to prevent the tower lifting point from falling off during lifting and turning. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the main tower installation structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the secondary tower installation structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the hook mechanism of this utility model.

[0024] Figure 5 A structural schematic diagram of the groove of this utility model is provided.

[0025] Figure reference numerals: 1. Assembly platform; 2. Main tower; 3. Traveling mechanism; 4. Secondary tower; 5. Mounting frame; 6. Winding mechanism; 7. Steel strand; 8. Lifting beam; 9. Hook mechanism; 91. Hook body; 92. Slide groove; 93. Gear ring; 94. First protective shell; 95. Roller; 96. First gear; 97. Baffle; 98. Handle; 99. Second gear; 910. Second protective shell; 911. Spring; 912. Connecting rod; 10. First counterweight; 11. Steel rope; 12. Second counterweight. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] In one embodiment, such as Figures 1-5 As shown, a lifting device for offshore wind power includes an assembly platform 1, a main tower 2 is provided on one side of the top of the assembly platform 1, a traveling mechanism 3 is provided on the other side of the top of the assembly platform 1, and a secondary tower 4 is provided on the top of the traveling mechanism 3.

[0028] The main tower 2 and the secondary tower 4 are each equipped with a mounting frame 5. The top of each mounting frame 5 is equipped with a winding mechanism 6. A steel strand 7 is provided on the outside of the winding mechanism 6. A lifting beam 8 is provided at one end of the steel strand 7. A hook mechanism 9 is provided at the bottom of the lifting beam 8.

[0029] In this embodiment, the assembly platform 1 serves as the basic working platform, and the horizontal construction of the wind turbine tower is completed on top of it. Compared with traditional vertical construction, the horizontal method is more suitable for the segmented construction of heavy structures, reduces the risk of high-altitude operations, and facilitates early assembly and welding operations. After the tower is completed, the core lifting and turning mechanism of the device is activated. The main tower 2 uses the winding mechanism 6 on the top mounting frame 5 to wind up and unwind the steel strand 7, driving the lifting beam 8 and the bottom hook mechanism 9 to move down, so that the hook mechanism 9 connects to the preset lifting point at the top of the tower. At the same time, the auxiliary tower 4 connects to the bottom lifting point of the tower through the same components. A dual-point lifting mode is formed, with the main tower 2 lifting the top and the secondary tower 4 lifting the bottom. Subsequently, the tower body is turned over through the coordinated operation of the winding mechanism 6 and the traveling mechanism 3. The winding mechanism 6 of the main tower 2 maintains a stable lifting force on the top of the tower body, while the secondary tower 4 moves horizontally along the assembly platform 1 with the help of the traveling mechanism 3 at the bottom, driving the bottom of the tower body to move synchronously, so that the tower body slowly turns around the lifting point of the main tower 2. During this process, the first counterweight 10 on the side of the main tower 2 balances the force on the main tower 2 through the steel rope 11, and the second counterweight 12 on the side of the secondary tower 4 ensures the stability of the secondary tower 4 when it moves, avoiding tilting or deviation after turning over.

[0030] In one embodiment, such as Figure 4 and Figure 5As shown, the hook mechanism 9 includes a hook body 91, which is fixedly installed at the bottom of the lifting beam 8. Slide grooves 92 are provided on both outer sides of the hook body 91. Toothed rings 93 are slidably installed on both outer sides of the hook body 91 through the slide grooves 92. A first protective shell 94 is provided on both outer sides of the hook body 91 and outside the toothed rings 93. A roller 95 is rotatably installed between one end of the two toothed rings 93. A baffle 97 is rotatably installed on the outside of the hook body 91 via a pin. A handle 98 is fixedly connected to the outside of the baffle 97. A second gear 99 is fixedly installed inside the baffle 97. A first gear 96 is rotatably installed on both outer sides of the hook body 91, and the first gear 96 meshes with the toothed rings 93. The first gear 96 meshes with the second gear 99. A second protective shell 910 is fixedly installed on one side of the hook body 91. A spring 911 is installed inside the second protective shell 910. A connecting rod 912 is fixedly connected to the outside of the handle 98, and one end of the connecting rod 912 extends into the inside of the second protective shell 910. One end of the spring 911 is fixedly connected to the connecting rod 912. When the hook mechanism 9 needs to be connected to the tower body, first press the handle 98, the baffle 97 flips open, and at the same time the second gear 99 rotates, driving the first gear 96 to rotate. The first gear 96 drives the gear ring 93 to rotate, so that the gear ring 93 releases the obstruction of the opening of the hook body 91. The connecting rod 912 rotates, driving the spring 911 to compress, so that the hook body 91 is put on the outside of the tower body. Slowly loosen the handle 98. Due to the reset action of the spring 911, the connecting rod 912 drives the handle 98 to reset and rotate. The hook mechanism 9 blocks the opening of the hook body 91. At the same time, the second gear 99 drives the first gear 96 to rotate, so that the gear ring 93 resets and blocks the opening of the hook body 91, improving stability.

[0031] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, a first counterweight 10 is provided on the top of the assembly platform 1 and on one side of the main tower 2. A steel cable 11 is provided on the top of the first counterweight 10, and one end of the steel cable 11 is connected to the mounting frame 5 on the top of the main tower 2. A second counterweight 12 is provided on the top of the walking mechanism 3 and on one side of the secondary tower 4. The first counterweight 10 on the side of the main tower 2 balances the force on the main tower 2 through the steel cable 11, and the second counterweight 12 on the side of the secondary tower 4 ensures the stability of the secondary tower 4 when it moves, and avoids it from tilting or shifting.

[0032] The above embodiments disclose a lifting device for offshore wind power, wherein the assembly platform 1 serves as the basic working carrier, and the wind turbine tower is constructed horizontally on top of it. Compared with traditional vertical construction, the horizontal method is more suitable for the segmented construction of heavy structures, reduces the risk of high-altitude operations, and facilitates early assembly and welding operations. After the tower is constructed, the core lifting and turning mechanism of the device is activated. The main tower 2 uses the winding mechanism 6 on the top mounting frame 5 to wind and unwind the steel strand 7, driving the lifting beam 8 and the bottom hook mechanism 9 to move down, so that the hook mechanism 9 connects with the preset lifting point on the top of the tower. At the same time, the auxiliary tower 4 connects with the main tower through the same components. The bottom lifting points are connected to form a dual-point lifting mode where the main tower 2 lifts the top and the auxiliary tower 4 lifts the bottom. Then, the tower body is turned over through the coordinated operation of the winding mechanism 6 and the traveling mechanism 3. The winding mechanism 6 of the main tower 2 maintains a stable lifting force on the top of the tower body, while the auxiliary tower 4 moves horizontally along the assembly platform 1 with the help of the traveling mechanism 3 at the bottom, driving the bottom of the tower body to move synchronously, so that the tower body slowly turns around the lifting point of the main tower 2. During this process, the first counterweight 10 on the side of the main tower 2 balances the force on the main tower 2 through the steel rope 11, and the second counterweight 12 on the side of the auxiliary tower 4 ensures the stability of the auxiliary tower 4 when it moves, avoiding tilting or deviation after turning over.

[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lifting device for offshore wind power, comprising an assembly platform (1), wherein a main tower (2) is provided on one side of the top of the assembly platform (1), a traveling mechanism (3) is provided on the other side of the top of the assembly platform (1), and a secondary tower (4) is provided on the top of the traveling mechanism (3). characterized in that The main tower (2) and the secondary tower (4) are each provided with a mounting frame (5) at the top. The two mounting frames (5) are each provided with a winding mechanism (6) at the top. The winding mechanism (6) is provided with a steel strand (7) on the outside. One end of the steel strand (7) is provided with a lifting beam (8). The bottom of the lifting beam (8) is provided with a hook mechanism (9).

2. A hoisting device for offshore wind power according to claim 1, characterized in that The hook mechanism (9) includes a hook body (91), which is fixedly installed at the bottom of the lifting beam (8). Slide grooves (92) are provided on both outer sides of the hook body (91). Toothed rings (93) are slidably installed on both outer sides of the hook body (91) through the slide grooves (92). A first protective shell (94) is provided on both outer sides of the hook body (91) and outside the toothed rings (93).

3. A hoisting device for offshore wind power according to claim 2, characterized in that A roller (95) is rotatably mounted between one end of the two toothed rings (93).

4. A hoisting device for offshore wind power according to claim 3, characterized in that A baffle (97) is rotatably mounted on the outside of the hook body (91) via a pin, and a handle (98) is fixedly connected to the outside of the baffle (97).

5. A hoisting device for offshore wind power according to claim 4, characterized in that The baffle (97) is fixedly installed inside the baffle (99), and the hook body (91) is rotatably installed on both sides of the outside of the first gear (96), and the first gear (96) meshes with the toothed ring (93), and the first gear (96) meshes with the second gear (99).

6. A hoisting device for offshore wind power according to claim 5, characterized in that A second protective shell (910) is fixedly installed on one side of the hook body (91). A spring (911) is installed inside the second protective shell (910). A connecting rod (912) is fixedly connected to the outside of the handle (98), and one end of the connecting rod (912) extends into the inside of the second protective shell (910). One end of the spring (911) is fixedly connected to the connecting rod (912).

7. A hoisting device for offshore wind power according to claim 1, characterized in that A first counterweight (10) is provided on the top of the assembly platform (1) and on one side of the main tower (2). A steel rope (11) is provided on the top of the first counterweight (10), and one end of the steel rope (11) is connected to the mounting frame (5) on the top of the main tower (2).

8. A hoisting device for offshore wind power according to claim 1, characterized in that A second counterweight (12) is provided on the top of the walking mechanism (3) and on one side of the secondary tower (4).

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