Dovetail slot structure and integrated cage

Abstract

This utility model provides a dovetail groove structure and an integrated cage. The dovetail groove structure includes a dovetail groove plate and a cage support that are assembled and connected. The dovetail groove plate has a dovetail groove with a square cross-sectional shape at the top. A first anti-wear plate is fixedly installed on the inner side of the dovetail groove. The inner end of the cage support is fixedly connected to the side wall of a monopile. A second anti-wear plate is fixedly installed on both the side and top surfaces of the cage support. Reinforcing plates are fixedly installed at both ends of the outer side of the dovetail groove plate. A ring beam is fixedly connected above the reinforcing plates. The bottom of the dovetail groove plate is engaged with the cage support. This utility model reduces the concentrated stress experienced by the dovetail groove structure during use and improves its durability.

Description

Technical Field

[0001] This utility model relates to the field of integrated cage technology, and in particular to a dovetail slot structure and an integrated cage. Background Technology

[0002] With the continuous development of offshore wind power, the single-unit capacity of wind turbines is constantly increasing, and the operating water depth is also gradually increasing, resulting in a gradual increase in the diameter of monopile foundations, with the largest diameter currently reaching 10 meters. Most monopile foundation auxiliary components in China adopt the integrated cage type. A schematic diagram of an existing integrated cage structure is attached. Figure 1 As shown, the integrated cage is equipped with mooring equipment, J-tubes, an external platform, and a cathodic protection system to meet operation and maintenance needs. The integrated cage is fixed by dovetail grooves welded to the ring beam and corbels welded to the piles (generally six sets), while fasteners are used to prevent the integrated cage from shaking. However, as the pile diameter continues to increase, the size of the cage also increases. The traditional dovetail groove design (a schematic diagram of the traditional dovetail groove structure is attached) is no longer suitable. Figure 2 As shown, this places extremely high demands on the assembly precision of the dovetail groove and the bracket. Furthermore, the traditional dovetail groove assembly method involves line contact, resulting in a small contact area and a tendency for stress concentration. Utility Model Content

[0003] The purpose of this utility model is to provide a dovetail groove structure and an integrated cage to reduce the concentrated stress on the dovetail groove structure during use and improve the durability of the dovetail groove structure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a dovetail groove structure, characterized in that it includes a dovetail groove plate and a cage support that are assembled and connected. The dovetail groove plate is provided with a dovetail groove. The cross-sectional shape of the top of the dovetail groove is square. A first anti-wear plate is fixedly provided on the inner side of the dovetail groove.

[0005] The inner end of the cage support is fixedly connected to the side wall of the single pile, and a second anti-wear plate is fixedly provided on the side and top surfaces of the cage support.

[0006] The dovetail slot plate has reinforcing plates fixed at both ends of its outer side. A ring beam is fixedly connected above the reinforcing plates. The bottom of the dovetail slot plate is engaged with the cage support.

[0007] Furthermore, the cage support is a square steel pipe, and a sealing plate is provided at the outer end of the cage support.

[0008] Furthermore, a support plate is provided below the cage support, and the inner end of the support plate is fixedly connected to the side wall of the monopile.

[0009] Furthermore, the fixed overlap length between the dovetail groove plate and the ring beam is 250mm-350mm.

[0010] Furthermore, the top width of the dovetail groove is greater than the width of the cage support, and the difference between the top width of the dovetail groove and the width of the cage support is 20mm-30mm.

[0011] Based on the same inventive concept, this utility model also provides an integrated cage, which includes a single pile, a ring beam placed horizontally around the outer ring of the single pile, and multiple dovetail slot structures arranged in equal circumferences below the ring beam and around the side wall of the single pile. The structural feature is that the dovetail slot structure is the aforementioned dovetail slot structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model changes the cage support to a rectangular support, and the dovetail groove changes accordingly. At the same time, a certain gap is left during assembly. A reinforcing support plate is installed below the cage support. Through the above innovative design, the construction precision can be reduced to a certain extent, making it easier to manufacture. During installation, the ring beam can be protected from damage, and stress concentration can be reduced during operation, ensuring the safety of the structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an existing integrated cage structure;

[0014] Figure 2 This is a schematic diagram of a traditional dovetail groove structure;

[0015] Figure 3 This is a three-dimensional structural diagram of one embodiment of the present utility model;

[0016] Figure 4 This is a front view of one embodiment of the present invention;

[0017] Figure 5 This is a cross-sectional view of one embodiment of the present utility model;

[0018] Figure 6 This is a schematic diagram illustrating the manufacturing and installation process of one embodiment of the present invention.

[0019] In the diagram: 1. Dovetail groove plate; 101. Dovetail groove; 2. Reinforcing plate; 3. First wear-resistant plate; 4. Support plate; 5. Sealing plate; 6. Cage support; 7. Second wear-resistant plate; 8. Ring beam; 9. Single pile; L1. Top width of the dovetail groove; L2. Width of the cage support; B. Gap. Detailed Implementation

[0020] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0021] like Figures 3-5 As shown, a dovetail slot structure in this embodiment includes a dovetail slot plate 1 and a cage support 4 that are assembled and connected. A dovetail slot 101 is provided on the dovetail slot plate 1. The top cross-sectional shape of the dovetail slot 101 is square. A first anti-wear plate 3 is fixedly provided on the inner side of the dovetail slot 101.

[0022] The inner end of the cage support 4 is fixedly connected to the side wall of the monopile 9, and a second abrasion plate 6 is fixedly provided on both the side and top surfaces of the cage support 4. The abrasion plate can prevent damage to the anti-corrosion coating of the cage support when the structure comes into contact with it.

[0023] The dovetail slot plate 1 has reinforcing plates 2 fixedly installed at both ends of its outer side. A ring beam 8 is fixedly connected above the reinforcing plate 2. The bottom of the dovetail slot plate 1 is engaged with the cage support 4.

[0024] like Figures 3-5 As shown, in this embodiment, the cage support 4 is a square steel pipe, and a sealing plate 5 is provided at the outer end of the cage support 4. The sealing plate serves to strengthen the structure and prevent corrosion of the inner surface of the cage support.

[0025] like Figures 3-5 As shown, in this embodiment, a support plate 7 is provided below the cage support 4, and the inner end of the support plate 7 is fixedly connected to the side wall of the monopile 9. This support plate has two functions: firstly, it supports the cage support, increasing the shear area of ​​the cage support structure; secondly, for cages where the cage support is located in the middle ring beam, it protects the cage when the ring beam passes through the cage support, preventing the cage from being damaged. Specifically, the ring beam is fitted around the outer periphery of the cage. When the ring beam is lowered or raised, its vertical movement may cause it to collide with the cage support. At this time, the cage support will be subjected to vertical shear force from the ring beam. Because this embodiment provides the support plate 7, when the cage support is subjected to vertical shear force, the support plate 7 can support the cage support, offsetting part of the shear force, thereby preventing the cage from being damaged.

[0026] like Figures 3-5 As shown, in this embodiment, the fixed overlap length between the dovetail groove plate 1 and the ring beam 8 is 250mm-350mm. This design helps to alleviate the stress concentration problem of the ring beam in this area.

[0027] like Figures 3-5As shown, in this embodiment, the top width L1 of the dovetail groove 101 is greater than the width L2 of the cage support 4, and the difference between the top width L1 of the dovetail groove 101 and the width L2 of the cage support 4 is 20mm-30mm. This design facilitates surface contact between the dovetail groove and the cage support, while allowing for some errors during manufacturing and installation, greatly simplifying the manufacturing process.

[0028] like Figures 3-5 As shown, this embodiment also provides an integrated cage, which includes a single pile 9, a ring beam 8 placed horizontally around the outer ring of the single pile 9, and a plurality of dovetail slot structures arranged in equal circumferences below the ring beam 8 and surrounding the side wall of the single pile 9. The dovetail slot structures are the dovetail slot structures described above.

[0029] like Figure 6 As shown, the manufacturing process of this embodiment is as follows: First, the square cage support, stainless steel wear-resistant plate, and sealing plate are manufactured and welded together; then, the cage support and accessories are welded onto the monopile; next, the support plate is welded; then, the dovetail slot plate, ring beam, reinforcing plate, and wear-resistant plate are manufactured and welded; then, the dovetail slot is assembled with the cage support; when the dovetail slot plate is in complete contact with the upper surface of the cage support, the installation is complete.

[0030] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the embodiments by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

Claims

1. A dovetail groove structure, characterized in that, It includes a dovetail slot plate (1) and a cage support (4) for assembly and connection. The dovetail slot plate (1) is provided with a dovetail slot (101). The top cross-sectional shape of the dovetail slot (101) is square. The inner side of the dovetail slot (101) is fixedly provided with a first anti-wear plate (3). The inner end of the cage support (4) is fixedly connected to the side wall of the single pile (9), and the side and top surfaces of the cage support (4) are both fixedly provided with a second anti-wear plate (6). The dovetail slot plate (1) has reinforcing plates (2) fixedly installed at both ends of its outer side. A ring beam (8) is fixedly connected above the reinforcing plate (2). The bottom of the dovetail slot plate (1) is engaged with the cage support (4).

2. The dovetail groove structure according to claim 1, characterized in that, The cage support (4) is a square steel pipe, and the outer end of the cage support (4) is provided with a sealing plate (5).

3. The dovetail groove structure according to claim 1, characterized in that, A support plate (7) is provided below the cage support (4), and the inner end of the support plate (7) is fixedly connected to the side wall of the single pile (9).

4. A dovetail groove structure according to any one of claims 1-3, characterized in that, The fixed overlap length between the dovetail groove plate (1) and the ring beam (8) is 250mm-350mm.

5. A dovetail groove structure according to any one of claims 1-3, characterized in that, The top width (L1) of the dovetail groove (101) is greater than the width (L2) of the cage support (4), and the difference between the top width (L1) of the dovetail groove (101) and the width (L2) of the cage support (4) is 20mm-30mm.

6. An integrated cage, the integrated cage comprising a single pile (9), a ring beam (8) horizontally placed around the outer ring of the single pile (9), and a plurality of dovetail slot structures arranged in equal circumferences below the ring beam (8) and surrounding the side wall of the single pile (9), characterized in that, The dovetail slot structure is the dovetail slot structure according to any one of claims 1-5.

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