Interference-preventing lifting lug structure for offshore wind turbine jackets

Abstract

To provide an interference-preventing lifting lug structure for an offshore wind power generator jacket, which reduces the risk of collision during lifting, enables quick positioning, improves stability during lifting, and improves the stability of the lifting lug and the service life of the lifting hole. [Solution] The anti-interference lifting lug structure for an offshore wind turbine jacket comprises a jacket (1), a lifting hole, and a reinforcing ring (9). Four lifting lugs are attached to the inner wall of the jacket, arranged symmetrically in a ring shape. The lifting lugs have two rub plates (2) and welded plates (4) arranged vertically in three layers along a straight line. Two welded plates are provided for each layer, and the two welded plates are welded to the outside of the rub plates, which are welded to the jacket. Lifting holes are opened on the inner upper end side of the rub plates, and wear-resistant bushings are fitted into the lifting holes. Reinforcement rings are installed on both outer ends of the lifting holes.

Description

[Technical Field]

[0001] The present invention relates to the technical field of lifting lug structures, and more particularly to an anti-interference lifting lug structure for an offshore wind turbine jacket. [Background technology]

[0002] With the continuous increase in global demand for clean energy, the offshore wind power industry has entered a period of rapid development. The jacket lifting process, a key step in the installation of offshore wind power generation equipment, is directly related to the safety and efficiency of the project. The lifting lug structure is the core component of the jacket lifting process, and its rational design is extremely important.

[0003] The lifting lug designs of conventional wind power jackets generally adopt symmetrical arrangements and simplified configurations, but in practical applications, these designs reveal many drawbacks.

[0004] First, the lifting lugs are located too close to the jacket's internal platform, columns, and other complex components, which makes it highly likely that a collision will occur during lifting, resulting in stress concentration and damage to the jacket structure.

[0005] Furthermore, in the four-point lifting arrangement, the distribution of the jacket's center of gravity is not fully considered, causing the jacket to obviously sway during lifting. This not only affects the lifting efficiency but also poses a significant safety risk. Therefore, we propose an interference-prevention lifting lug structure for offshore wind turbine jackets. Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the shortcomings of the prior art, the present invention provides an anti-interference lifting lug structure for an offshore wind turbine jacket to solve the problems presented in the background art mentioned above. [Means for solving the problem]

[0007] To achieve the above objectives, the present invention provides a technical solution for an anti-interference lifting lug structure for an offshore wind turbine jacket, comprising a jacket, a lifting hole, and a reinforcing ring. Four lifting lugs are attached to the inner wall of the jacket, arranged symmetrically in a ring shape. The lifting lugs have two rub plates and welded plates arranged vertically in three layers along a straight line, with two welded plates for each layer, and the two welded plates are welded to the outer side of the rub plates, which are welded to the jacket. The lifting holes are opened at the inner upper end of the rub plates, and wear-resistant bushings are fitted into the lifting holes. The reinforcing rings are attached to both outer ends of the lifting holes.

[0008] Preferably, limiting rings are provided on both the left and right ends of the outside of the suspension hole of the wear-resistant bushing, and the limiting rings are integrally molded with the wear-resistant bushing. By providing the limiting rings, the mounting of the wear-resistant bushing becomes more stable.

[0009] Preferably, the outer diameter of the limiting ring is larger than the inner diameter of the hanging hole, and the outer diameter of the wear-resistant bushing is larger than the inner diameter of the hanging hole, and the wear-resistant bushing serves to protect the inner wall of the hanging hole.

[0010] Preferably, the hanging hole is integrally formed with the love plate, the reinforcing ring is concentric with the hanging hole and is integrally formed with the love plate, and the hanging hole passes through the reinforcing ring, which improves the mechanical strength of the hanging hole.

[0011] Preferably, both edges of the lifting hole are provided with arc-shaped anti-collision chamfers, which are integrally formed with the lifting hole, to prevent the lifting wire rope from directly rubbing against the edges of the lifting hole, thereby preventing stress concentration.

[0012] Preferably, a cross-shaped reinforcing rib is provided on the side of the love plate opposite the weld plate, and the cross-shaped reinforcing rib is integrally formed with the love plate and has a thickness of 30 mm. By increasing the cross-sectional moment of inertia of the love plate, bending deformation of the love plate during lifting is reduced, and the load is distributed to the main support legs via the rib plate, improving structural rigidity. [Effects of the Invention]

[0013] Compared with the prior art, the present invention provides an anti-interference lifting lug structure for offshore wind turbine jackets, and has the following beneficial effects:

[0014] This invention provides four lifting lugs inside the jacket to avoid complex components, thereby reducing the risk of collision during lifting; the four symmetrically installed lifting lugs allow for quick positioning and further improve stability when lifting the jacket; the welded plate increases the welding area between the lifting lugs and the jacket, improving the fixing stability of the lifting lugs; and the wear-resistant bushings installed inside the lifting holes improve the service life of the lifting holes and reduce wear on the lifting holes, thereby solving the problems cited in the background art. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view of the overall configuration of the present invention. [Figure 2] FIG. 2 is a perspective view of the lifting lug structure of the present invention. [Figure 3] FIG. 3 is a perspective view of the wear-resistant bushing and the hanging hole in the present invention in a separated state. DETAILED DESCRIPTION OF THE INVENTION

[0016] The technical solutions in the embodiments of the present invention will be described below clearly and completely with reference to the drawings of the embodiments of the present invention, but it is clear that the described embodiments are only some of the embodiments of the present invention and not all of the embodiments. All other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without any creative ingenuity fall within the scope of protection of the present invention.

[0017] As shown in Figures 1, 2 and 3, the present invention provides an anti-interference lifting lug structure for an offshore wind turbine jacket, comprising a jacket 1, a lifting hole 3 and a reinforcing ring 9. Four lifting lugs are attached to the inner wall of the jacket 1, arranged symmetrically in a ring shape. The lifting lugs have two rub plates 2 and welded plates 4 arranged vertically in three layers along a straight line. Two welded plates 4 are provided in each layer, and the two welded plates 4 are welded to the outer side of the rub plates 2, which are welded to the jacket 1. A lifting hole 3 is opened at the inner upper end of the rub plates 2. A wear-resistant bushing 5 is fitted into the lifting hole 3, and reinforcing rings 9 are provided on both outer ends of the lifting hole 3.

[0018] 2 and 3, limit rings 6 are provided on both the left and right ends of the wear-resistant bushing 5 outside the hanging hole 3, and the limit rings 6 are molded integrally with the wear-resistant bushing 5. By providing the limit rings 6, the attachment of the wear-resistant bushing 5 becomes more stable.

[0019] 2 and 3, the outer diameter of the limit ring 6 is larger than the inner diameter of the hanging hole 3, and the outer diameter of the wear-resistant bushing 5 is larger than the inner diameter of the hanging hole 3. The wear-resistant bushing 5 serves to protect the inner wall of the hanging hole 3.

[0020] As shown in Figures 1, 2 and 3, the hanging hole 3 is integrally molded with the love plate 2, and the reinforcing ring 9 is provided concentrically with the hanging hole 3 and is integrally molded with the love plate 2, and the hanging hole 3 passes through the reinforcing ring 9. The reinforcing ring 9 improves the mechanical strength of the hanging hole 3.

[0021] As shown in Figure 3, arc-shaped anti-collision chamfers 8 are provided on both end edges of the lifting hole 3, and the arc-shaped anti-collision chamfers 8 are integrally formed with the lifting hole 3. The arc-shaped anti-collision chamfers 8 prevent the lifting wire rope from directly rubbing against the edges of the lifting hole 3, which would cause stress concentration.

[0022] As shown in Figures 2 and 3, a cross-shaped reinforcing rib 7 is provided on the side of the love plate 2 opposite the welded plate 4. The cross-shaped reinforcing rib 7 is integrally formed with the love plate 2 and has a thickness of 30 mm. By increasing the cross-sectional moment of inertia of the love plate 2, bending deformation of the love plate 2 during lifting is reduced, and the load is distributed to the main support legs via the rib plate, improving structural rigidity.

[0023] This invention provides a four-lug lifting structure inside the jacket 1, positioning the lifting lugs to avoid complex components inside the jacket 1 and reducing the risk of collision during lifting. The wear-resistant bushing 5 can be adjusted by crushing and deforming it and inserting it into the lifting hole 3, and two limit rings 6 are located on both sides of the lifting hole 3, which loosen the wear-resistant bushing 5 and restore it to its original shape, allowing it to engage inside the lifting hole 3. Periodic replacement of the wear-resistant bushing 5 improves the service life of the lifting lugs.

[0024] It should be noted that, as used herein, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another and do not necessarily require or imply that such an actual relationship or order exists between those entities or operations. Furthermore, the terms "comprise," "comprises," or any other variation thereof imply an inclusion that is not exclusive. Thus, a process, method, article, or facility that includes a set of elements includes not only those elements but also other elements not expressly listed or that are inherent in such process, method, article, or facility.

[0025] Although the embodiments of the present invention have been shown and described above, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments of the present invention without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the appended claims and their equivalents. [Explanation of symbols]

[0026] 1 jacket 2 Love Plate 3 Hanging hole 4 Welded Plates 5. Wear-resistant bushings 6 Restriction Ring 7 Cross reinforcement rib 8. Circular arc anti-collision chamfer 9 Reinforcement ring

Claims

1. An interference-preventing lifting lug structure for an offshore wind turbine jacket, Jacket (1) and A hanging hole (3), a reinforcing ring (9); Equipped with Four lifting lugs are attached to the inner wall of the jacket (1) and are arranged symmetrically in a ring shape. Each lifting lug has two rub plates (2) and three layers of weld plates (4) arranged vertically along a straight line. Two weld plates (4) are provided for each layer. The two weld plates (4) are welded and fixed to the outer sides of the rub plates (2), and the weld plates (4) are welded and fixed to the jacket (1). The hanging hole (3) is opened at the upper end side of the interior of the love plate (2), and a wear-resistant bush (5) is fitted into the hanging hole (3). An interference-preventing lifting lug structure for an offshore wind power generator jacket, characterized in that the reinforcing rings (9) are provided on both outer ends of the suspension hole (3).

2. The interference-preventing lifting lug structure for an offshore wind power generator jacket according to claim 1, An interference-preventing lifting lug structure for an offshore wind turbine jacket is characterized in that limiting rings (6) are provided on both the left and right ends of the exterior of the suspension hole (3) in the wear-resistant bushing (5), and the limiting rings (6) are integrally molded with the wear-resistant bushing (5).

3. The interference-preventing lifting lug structure for an offshore wind power generator jacket according to claim 2, The outer diameter of the limiting ring (6) is larger than the inner diameter of the suspension hole (3), and the outer diameter of the wear-resistant bushing (5) is larger than the inner diameter of the suspension hole (3).

4. The interference-preventing lifting lug structure for an offshore wind power generator jacket according to claim 1, The hanging hole (3) is integrally formed with the love plate (2), The reinforcing ring (9) is provided concentrically with the hanging hole (3) and is integrally molded with the love plate (2). The anti-interference lifting lug structure for an offshore wind power generator jacket is characterized in that the suspension hole (3) passes through a reinforcing ring (9).

5. The interference-preventing lifting lug structure for an offshore wind power generator jacket according to claim 1, An interference-preventing lifting lug structure for an offshore wind turbine jacket, characterized in that arc-shaped anti-collision chamfers (8) are provided on both end edges of the hanging hole (3), and the arc-shaped anti-collision chamfers (8) are integrally molded with the hanging hole (3).

6. The interference-preventing lifting lug structure for an offshore wind power generator jacket according to claim 1, A cross reinforcing rib (7) is provided on the opposite side of the love plate (2) from the welding plate (4), An interference-preventing lifting lug structure for an offshore wind power generator jacket, characterized in that the cross-shaped reinforcing rib (7) is integrally molded with the rub plate (2).

Images