Composite spliced i-beam structure for airfoil sail

Abstract

The utility model belongs to shipbuilding technical field especially relates to a kind of composite material splicing i-beam structure for airfoil sail, in the utility model, beam base is main force component, and two groups of first reinforcing components are symmetrically fixed on its both sides, effectively enhance the overall bending stiffness and lateral stability;On this basis, second reinforcing structure is further fixed with first reinforcing component, forms local reinforcement, significantly improves the buckling resistance of structure and carrying efficiency.Compared with traditional steel component, the utility model uses composite material, significantly reduces the dead weight of beam body, thereby helps to improve the boost efficiency of sail and the economy of ship, while the inherent corrosion resistance of composite material also prolongs the service life in marine environment.The splicing i-beam structure also has the modularization feature, and is convenient for production and manufacture and on-site installation and maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of shipbuilding technology, and in particular relates to a composite material splicing I-beam structure for airfoil sails. Background Technology

[0002] Since the late 20th century, many countries have successively carried out research and development on sail-assisted vessels, achieving significant progress. In terms of technological approaches, some studies focused on a "sail-master-slave" model, with the sail as the primary power source and the engine as an auxiliary power source, while others primarily adopted a "engine-master-sail-slave" approach, where the engine is the primary power source and the sail provides secondary propulsion. Against this backdrop, the world's first sail-assisted vessel was built, marking the entry of sail-assisted propulsion technology into the practical application stage.

[0003] Early sails mostly used a composite structure of steel and polyester fiber, with the steel component accounting for a large proportion of the weight. With the continuous development of sail technology, newer, more efficient wing sails gradually replaced traditional sail types. Modern airfoil sails generally have the characteristics of high strength, large thrust, and better working efficiency than traditional drag sails, but they also have the limitation of relatively large overall weight. Utility Model Content

[0004] The purpose of this invention is to provide a composite material splicing I-beam structure for airfoil sails to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A composite material splicing I-beam structure for airfoil sails includes:

[0007] Beam foundation;

[0008] The first reinforcing structure includes two first reinforcing components, which are respectively disposed on opposite sides of the beam foundation and fixedly connected to the beam foundation;

[0009] The second reinforcing structure is fixedly attached to the first reinforcing component.

[0010] In the composite material splicing I-beam structure for airfoil sails of this utility model, the beam foundation includes a composite material main support plate, and the composite material main support plate is provided with at least one.

[0011] In the composite material splicing I-beam structure for airfoil sails of this utility model, the first reinforcing component includes two composite material L-shaped corner pieces. Both composite material L-shaped corner pieces are fixed to one side of the composite material main support plate. The composite material L-shaped corner pieces are arranged along the length direction of the composite material main support plate. The two composite material L-shaped corner pieces of the same first reinforcing component are close to each other, and the outer corner of the composite material L-shaped corner piece is flush with one edge of the composite material main support plate.

[0012] In the composite material splicing I-beam structure for airfoil sails of this utility model, the second reinforcing structure includes composite material connecting corner pieces. The composite material connecting corner pieces are on two composite material L-shaped corner pieces within the same first reinforcing component, and the composite material connecting corner pieces are perpendicular to the length direction of the composite material main support plate.

[0013] In the composite material splicing I-beam structure for airfoil sails of this utility model, at least one composite material connecting corner piece is provided within the same first reinforcing component.

[0014] In the composite material splicing I-beam structure for airfoil sails of this utility model, the composite material main support plate and the composite material L-shaped angle piece, the composite material connecting angle piece and the composite material main support plate, and the composite material L-shaped angle piece are all fixedly connected by connecting bolts.

[0015] In the composite material splicing I-beam structure for airfoil sails of this utility model, a notch is provided on the main support plate of the composite material, the notch penetrates one of the composite material L-shaped corner pieces of the first reinforcing component, and the composite material connecting corner piece is close to the notch.

[0016] In the composite material splicing I-beam structure for airfoil sails of this utility model, the distance from the end of the composite material L-shaped angle member on the side with the notch to the main composite material support plate is greater than the distance from the end of the composite material L-shaped angle member on the side without the notch to the main composite material support plate.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects:

[0018] In this invention, the beam foundation, as the main load-bearing component, has two sets of first reinforcing components symmetrically fixed to both sides, effectively enhancing the overall bending stiffness and lateral stability. Based on this, a second reinforcing structure is further fixed to the first reinforcing components, forming localized reinforcement and significantly improving the structure's buckling resistance and load-bearing efficiency. Compared to traditional steel components, this invention uses composite materials, significantly reducing the beam's self-weight, thereby helping to improve the propulsion efficiency of sails and the ship's economy. Simultaneously, the inherent corrosion resistance of composite materials extends its service life in marine environments. This modular I-beam structure also features modularity, facilitating manufacturing and on-site installation and maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an isometric view of the present invention;

[0021] Figure 2 This is the front view of the present invention;

[0022] Figure 3 This is a bottom view of the present invention;

[0023] Figure 4 This is a side view of the present invention;

[0024] The components include: 1. Composite material main support plate; 2. Composite material L-shaped corner piece; 3. Composite material connecting corner piece; 4. Connecting bolts. Detailed Implementation

[0025] 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.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figures 1 to 4 This utility model discloses a composite material splicing I-beam structure for airfoil sails, comprising:

[0028] Beam foundation;

[0029] The first reinforcing structure includes two first reinforcing components, which are respectively disposed on opposite sides of the beam foundation and fixedly connected to the beam foundation;

[0030] The second reinforcing structure is fixedly attached to the first reinforcing component.

[0031] In this invention, the beam foundation, as the main load-bearing component, has two sets of first reinforcing components symmetrically fixed to both sides, effectively enhancing the overall bending stiffness and lateral stability. Based on this, a second reinforcing structure is further fixed to the first reinforcing components, forming localized reinforcement and significantly improving the structure's buckling resistance and load-bearing efficiency. Compared to traditional steel components, this invention uses composite materials, significantly reducing the beam's self-weight, thereby helping to improve the propulsion efficiency of sails and the ship's economy. Simultaneously, the inherent corrosion resistance of composite materials extends its service life in marine environments. This modular I-beam structure also features modularity, facilitating manufacturing and on-site installation and maintenance.

[0032] In one alternative, the beam foundation includes a composite material main support plate 1, which is provided with at least one composite material main support plate.

[0033] In one alternative embodiment, the first reinforcing component includes two composite L-shaped corner pieces 2, both of which are fixed to one side of the composite main support plate 1. The composite L-shaped corner pieces 2 are arranged along the length of the composite main support plate 1. The two composite L-shaped corner pieces 2 of the same first reinforcing component are close to each other, and the outer corner of the composite L-shaped corner piece 2 is flush with one edge of the composite main support plate 1.

[0034] In one alternative, the second reinforcing structure includes a composite material connecting corner piece 3, which is attached to two composite material L-shaped corner pieces 2 within the same first reinforcing component, and the composite material connecting corner piece 3 is perpendicular to the length direction of the composite material main support plate 1.

[0035] In one alternative, at least one composite material connecting corner piece 3 is provided within the same first reinforcing component.

[0036] In one alternative, the composite material main support plate 1 and the composite material L-shaped angle 2, the composite material connecting angle plate 3 and the composite material main support plate 1 and the composite material L-shaped angle 2 are all fixedly connected by connecting bolts 4.

[0037] In one alternative, a notch is provided on the composite material main support plate 1, the notch penetrates one of the composite material L-shaped corner pieces 2 of the first reinforcing component, and the composite material connecting corner piece 3 is close to the notch.

[0038] In one alternative, the distance from the end of the composite L-shaped angle 2 on the notched side to the composite main support plate 1 is greater than the distance from the end of the composite L-shaped angle 2 on the side without the notched side to the composite main support plate 1.

[0039] In one alternative, the composite material main support plate 1, the composite material L-shaped corner piece 2, and the composite material connecting corner piece 3 are all made of carbon fiber composite material.

[0040] A method for fabricating a composite material spliced ​​I-beam structure for airfoil sails, comprising the following steps:

[0041] Raw materials were processed according to design requirements to produce beam foundations, the first reinforcing component, and the second reinforcing component;

[0042] The beam foundation, the first reinforcing component, and the second reinforcing component are fixed according to the design requirements. Structural adhesive is applied to the joints for bonding and curing. Through holes are drilled according to the design dimensions, and connecting bolts 4 are inserted into the through holes to fix the beam foundation, the first reinforcing component, and the second reinforcing component. The preparation is complete.

[0043] Specific preparation method:

[0044] First, the components are prepared. According to the dimensions and layup sequence in the drawings, carbon fiber prepreg is used to lay and cure composite material main support plate 1, multiple composite material L-shaped corner pieces 2, and composite material connecting corner pieces 3. The composite material main support plate 1 can be a finished carbon fiber pultruded plate or a carbon fiber layup plate. After the parts are cured, they are cut to the required dimensions. Then, the product is assembled. All parts are positioned and fixed using an assembly jig. The composite material L-shaped corner pieces 2 are installed on the composite material main support plate 1, one above the other, to form an I-shaped structure. Composite material connecting corner pieces 3 are used to connect and reinforce the joints of the composite material L-shaped corner pieces 2. After that, structural adhesive is applied and cured. Holes are drilled according to the drawings. Finally, connecting bolts 4 are used for connection. The connecting bolts 4 are stainless steel bolts, and sealing caps are made on the exposed surface of the connecting bolts 4 to prevent corrosion.

[0045] The technical advantages of this utility model are mainly reflected in the following aspects: First, the composite material splicing I-beam structure of the airfoil sail is entirely made of carbon fiber composite material, achieving lightweighting and effectively resisting marine environmental corrosion. Second, the I-beam design, formed by composite material L-shaped angle members 2 and composite material connecting angle pieces 3, and connected to the sail skin, can effectively withstand local aerodynamic forces, support the overall sail panel, and transfer the load to the main beam. Its maximum supporting force can withstand wind speeds of up to level 10, providing assistance for ocean voyages. Finally, the splicing structure allows its length, height, and thickness to be adjusted according to actual needs, possessing good adaptability and ultimately achieving the application effects of saving fuel consumption and reducing carbon emissions.

[0046] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A composite material splicing I-beam structure for airfoil sails, characterized in that, include: Beam foundation; The first reinforcing structure includes two first reinforcing components, which are respectively disposed on opposite sides of the beam foundation and fixedly connected to the beam foundation; The second reinforcing structure is fixedly attached to the first reinforcing component.

2. The composite material splicing I-beam structure for airfoil sails according to claim 1, characterized in that: The beam foundation includes a composite material main support plate (1), and the composite material main support plate (1) is provided with at least one.

3. The composite material splicing I-beam structure for airfoil sails according to claim 2, characterized in that: The first reinforcing component includes two composite material L-shaped corner pieces (2). Both composite material L-shaped corner pieces (2) are fixed to one side of the composite material main support plate (1). The composite material L-shaped corner pieces (2) are arranged along the length direction of the composite material main support plate (1). The two composite material L-shaped corner pieces (2) of the same first reinforcing component are close to each other. The outer corner of the composite material L-shaped corner piece (2) is flush with one edge of the composite material main support plate (1).

4. The composite material splicing I-beam structure for airfoil sails according to claim 3, characterized in that: The second reinforcing structure includes a composite material connecting corner piece (3), which is attached to two composite material L-shaped corner pieces (2) within the same first reinforcing component, and the composite material connecting corner piece (3) is perpendicular to the length direction of the composite material main support plate (1).

5. The composite material splicing I-beam structure for airfoil sails according to claim 4, characterized in that: At least one composite material connecting corner piece (3) is provided within the same first reinforcing component.

6. The composite material splicing I-beam structure for airfoil sails according to claim 4, characterized in that: The composite material main support plate (1) and the composite material L-shaped angle (2), the composite material connecting angle piece (3) and the composite material main support plate (1) and the composite material L-shaped angle (2) are all fixedly connected by connecting bolts (4).

7. The composite material splicing I-beam structure for airfoil sails according to claim 4, characterized in that: The composite material main support plate (1) has a notch, which penetrates one of the composite material L-shaped corner pieces (2) of the first reinforcing component, and the composite material connecting corner piece (3) is close to the notch.

8. The composite material splicing I-beam structure for airfoil sails according to claim 7, characterized in that: The distance between the end of the composite L-shaped angle (2) located on the side of the notch and the composite main support plate (1) is greater than the distance between the end of the composite L-shaped angle (2) on the side without the notch and the composite main support plate (1).

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