A reinforcement structure for a multi-fairlead base

Abstract

The present invention provides a reinforcement structure for a multi-fairlead base, the reinforcement structure is provided with at least two reinforcement plates connected between adjacent fairlead bases, the reinforcement plates are vertically welded to the upper surface of the deck and the two ends are welded and fixed to the side walls of the fairlead base; the upper surface of each reinforcement plate is provided with a concave semi-waisted circular groove, the semi-waisted circular groove is formed by the arc edge close to the fairlead bases on both sides and the horizontal straight edge connecting the two arcs; any two reinforcement plates between the two fairlead bases are reinforced and connected by steel bars, the cross section of the steel bars is a right triangle, and the side edges and bottom edges of the steel bars at right angles to each other are respectively welded to the side walls of the fairlead base and the deck. The reinforcement structure of the present invention can effectively improve the rigidity between fairlead bases with small spacing, can effectively improve the stress distribution at the corner points of the fairlead hole base, reduce the plate thickness of the fairlead base, reduce the production cost, and at the same time have a more beautiful appearance.

Description

Technical Field

[0001] The invention relates to a ship fairlead, and in particular to a reinforcement structure of a multi-fairlead base. Background Art

[0002] The ship fairlead usually needs to be placed on a fairlead base 1. The conventional fairlead base 1 is a rectangular box structure without a bottom plate. In order to ensure its strength, a flat steel reinforcement rib 2 is provided on the lower surface of the bottom plate of the fairlead base 1. Figure 1 As shown. In general, the fairlead base is relatively low, that is, the height is less than 300mm, which can effectively ensure the safety of the fairlead base during mooring operations. When the deck platform where the fairlead hole is placed is low, or there is a requirement for equipment collision avoidance, the height of the fairlead base needs to be increased, sometimes as high as 600mm-1000mm, such as Figure 2 During mooring operations, the corners of the fairlead base will generate greater stress concentration due to bending. Figure 3 As shown, in severe cases, it will cause structural damage. To address this problem, the traditional solution is to increase the thickness of the fairlead base to improve strength. However, the effect of improving strength is not ideal and is not proportional to the increased cost of the fairlead base. Therefore, it is necessary to re-optimize the reinforcement method of the fairlead base. Summary of the invention

[0003] The present invention provides a reinforcement structure of multiple fairlead bases, wherein a plurality of fairlead bases are welded in a row on the upper surface of a deck, the fairlead bases are closed cubic box structures without bottom plates welded on the deck, the height of the fairlead bases is 0.6-1m, and a spacing of less than 1m is left between adjacent fairlead bases, and flat steel reinforcing ribs are arranged on the lower surface of the top plate of the fairlead bases.

[0004] The reinforcement structure is provided with at least two reinforcement plates connected between adjacent fairlead bases, the reinforcement plates are vertically welded to the upper surface of the deck and the two ends are welded and fixed to the side walls of the fairlead bases;

[0005] The upper surface of each reinforcing plate is provided with a concave semi-waisted circular groove, the semi-waisted circular groove is formed by an arc edge close to the base of the fairlead on both sides and a horizontal straight edge connecting the two arcs, the radius of the arc is greater than 100 mm, and the distance between the lower surface of the reinforcing plate and the lowest point of the semi-waisted circular groove is at least 50 mm;

[0006] Any two reinforcing plates between the two fairlead bases are reinforced and connected by steel bars, the cross section of the steel bars is a right triangle, and the sides and bottom sides of the steel bars at right angles to each other are welded to the side walls of the fairlead base and the deck respectively.

[0007] Furthermore, the reinforcing plate is a hollow beam with a partition plate arranged inside, and the partition plate is a vertical plate inside the hollow beam.

[0008] Furthermore, a hollow beam is connected between any two reinforcing plates between the two fairlead bases, the end of the hollow beam is connected to the reinforcing plate below the horizontal straight edge, and the bottom edge of the hollow beam is welded to the deck;

[0009] The height of the hollow beam is less than 50 mm.

[0010] Furthermore, the reinforcing plate is fixed to the deck and the side wall of the fairlead base by full welding;

[0011] The steel bars are fixedly connected to the deck, the side wall of the fairlead base and the reinforcement plate by full welding;

[0012] The hollow beam is fixedly connected to the deck by full welding.

[0013] This patent provides a method for connecting fairlead bases. When the distance between two fairlead bases is close (less than 1m), the fairlead bases connected according to this method can effectively improve the stress distribution at the corner points of the fairlead base, reduce the plate thickness of the fairlead base, reduce production costs, and at the same time have a more beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of a fairlead base with a height of 0.3m in the prior art, and a flat steel reinforcement rib is provided on the lower surface of the top plate;

[0016] Figure 2 It is a schematic diagram of the base of the fairlead with a height of 0.6m;

[0017] Figure 3 It is a schematic diagram of the stress concentration corner point at the junction of the side wall of the fairlead base and the deck;

[0018] Figure 4 is a side view of a reinforcement structure of the present invention connected between two fairlead bases in one embodiment;

[0019] Figure 5 for Figure 4 Stereoscopic image of

[0020] Figure 6For Figure 4 Based on the scheme, a side cross-sectional view of a hollow steel plate is also connected between the two reinforcement plates;

[0021] Figure 7 for Figure 6 Stereoscopic diagram. DETAILED DESCRIPTION

[0022] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0023] In order to fully understand the present invention, detailed steps and detailed structures will be proposed in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0024] The present invention provides a reinforcement structure of a multi-fairlead base 1, such as Figure 4-5 As shown, multiple fairlead bases 1 are welded to the upper surface of the deck in a straight line. The fairlead base 1 is a closed cubic box structure without a bottom plate welded on the deck, the height of the fairlead base 1 is 0.6-1m, and a spacing of less than 1m is left between adjacent fairlead bases 1. Flat steel reinforcement ribs 2 are arranged on the lower surface of the top plate of the fairlead base 1.

[0025] The reinforcement structure of the present invention is provided with at least two reinforcing plates 10 connected between adjacent fairlead bases 1. The reinforcing plates 10 are vertically welded to the upper surface of the deck and the two ends are welded and fixed to the side walls of the fairlead bases 1. The upper surface of each reinforcing plate 10 is provided with a concave semi-waisted circular groove, which is formed by the arc edge close to the fairlead bases 1 on both sides and the horizontal straight edge connecting the two arcs. The radius R of the arc is greater than 100 mm, and the distance H between the lower surface of the reinforcing plate 10 and the lowest point of the semi-waisted circular groove is at least 50 mm. Any two reinforcing plates 10 between the two fairlead bases 1 are reinforced and connected by steel bars 11. The cross section of the steel bars 11 is a right triangle. The side edges and bottom edges of the steel bars 11 that are at right angles to each other are welded to the side walls of the fairlead base 1 and the deck respectively.

[0026] It should be noted that, as shown in Figures 4-7, two reinforcing plates 10 are arranged between the two fairlead bases 1. In actual situations, the number of reinforcing plates 10 can be increased as required to further improve the strength. In another optional embodiment, the semi-circular groove can also be replaced by a semicircular or semi-elliptical groove.

[0027] In an optional embodiment of the present invention, the reinforcing plate 10 is a hollow beam with a partition plate inside, and the partition plate is a vertical plate inside the hollow beam. The reinforcing plate 10 with a hollow interior and a partition plate has high strength and light weight, and reduces the weight burden on the hull under the premise of reinforcing the base of the fairlead.

[0028] In an optional embodiment of the present invention, Figure 6-7 As shown, a hollow steel plate 12 is connected between any two reinforcing plates 10 between the two fairlead bases 1, and the two reinforcing plates 10 are connected by the hollow steel plate 12 to further improve stability. The ends of the hollow steel plates 12 are connected to the reinforcing plates 10 located below the horizontal straight edge, and the bottom edge of the hollow steel plates 12 is welded to the deck; the height of the hollow steel plates 12 is less than 50 mm, so as to be lower than the groove of the reinforcing plate.

[0029] In an optional embodiment of the present invention, the reinforcing plate 10 is fixed to the deck and the side wall of the fairlead base 1 by full welding; the steel bar 11 is fixedly connected to the deck, the side wall of the fairlead base 1 and the reinforcing plate 10 by full welding; the hollow beam 12 is fixedly connected to the deck by full welding.

[0030] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A reinforcement structure of multiple fairlead bases, wherein a plurality of fairlead bases (1) are welded in a row on the upper surface of a deck, wherein the fairlead bases (1) are closed cubic box structures without bottom plates welded on the deck, wherein the height of the fairlead bases (1) is 0.6-1 m and a spacing of less than 1 m is left between adjacent fairlead bases (1), and flat steel reinforcing ribs (2) are arranged on the lower surface of the top plate of the fairlead bases (1), characterized in that: The reinforcement structure is provided with at least two reinforcement plates (10) connected between adjacent fairlead bases (1); the reinforcement plates (10) are vertically welded to the upper surface of the deck and the two ends of the reinforcement plates are welded and fixed to the side walls of the fairlead bases (1); The upper surface of each reinforcing plate (10) is provided with a concave semi-waisted circular groove, the semi-waisted circular groove is formed by an arc edge close to the fairlead base (1) on both sides and a horizontal straight edge connecting the two arcs, the radius of the arc is greater than 100 mm, and the distance between the lower surface of the reinforcing plate (10) and the lowest point of the semi-waisted circular groove is at least 50 mm; Any two reinforcing plates (10) between the two fairlead bases (1) are reinforced and connected by a steel bar (11), wherein the cross section of the steel bar (11) is a right-angled triangle, and the side edges and bottom edges of the steel bar (11) that are at right angles to each other are welded to the side wall and deck of the fairlead base (1), respectively.

2. The reinforcement structure of the multi-fairlead base according to claim 1, characterized in that: The reinforcing plate (10) is a hollow beam with a partition plate arranged inside, and the partition plate is a vertical plate inside the hollow beam.

3. The reinforcement structure of the multi-fairlead base (1) according to claim 2, characterized in that: A hollow steel plate (12) is also connected between any two reinforcing plates (10) between the two fairlead bases (1), the end of the hollow steel plate (12) is connected to the reinforcing plate (10) located below the horizontal straight edge, and the bottom edge of the hollow steel plate (12) is welded to the deck; The height of the hollow steel plate (12) is less than 50 mm.

4. The reinforcement structure of the multi-fairlead base according to claim 3, characterized in that: The reinforcing plate (10) is fixed to the deck and the side wall of the fairlead base (1) by full welding. The steel bar (11) is fixedly connected to the deck, the side wall of the fairlead base (1) and the reinforcing plate (10) by a full welding method; The hollow beam is fixedly connected to the deck by full welding.

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