Adjustable hydrofoil assembly for hydrofoil ship and motorboat
By designing adjustable hydrofoil components on the hydrofoil boat and automatically adjusting the angle of the hydrofoil plate using electric push rods and displacement sensors, the problem that existing hydrofoil boats cannot adjust the hydrofoil angle according to the speed is solved, and navigation speed, fuel economy and handling are improved.
Patent Information
- Application Number
- CN202411791430.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-03-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The hydrofoil angle of existing hydrofoil ships cannot be adjusted in real time according to speed and other factors, resulting in the inability to achieve optimal lift at different speeds, affecting speed, fuel economy and handling.
An adjustable hydrofoil assembly is designed to automatically adjust the angle of the hydrofoil plate through electric push rods and displacement sensors, and adjust the angle and depth of the hydrofoil in real time according to the state of the ship.
The optimal adjustment of the hydrofoil at different speeds is achieved, which improves navigation speed and fuel economy, enhances handling and stability, and reduces bumps in the hull.
Smart Images

Figure CN119551129A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a hydrofoil assembly, in particular to an adjustable hydrofoil assembly for a hydrofoil boat or motorboat. Background Art
[0002] Hydrofoil boats rely on the lift generated by the hydrofoils to lift part or all of the hull off the water surface, thereby reducing water resistance and increasing speed. The early design ideas of hydrofoils were derived from the principles of aircraft wings. The wing generates lift through the pressure difference between the upper and lower surfaces, and the hydrofoil is similar.
[0003] The existing technology mainly has the following defects:
[0004] 1. Poor adaptability to different speeds: During the travel of a hydrofoil ship, the speed is constantly changing. A constant hydrofoil angle means that the working state of the hydrofoil cannot be optimally adjusted at different speeds. For example, when traveling at low speeds, if the hydrofoil angle remains unchanged, it may not generate enough lift to lift the hull, resulting in greater water resistance, affecting the acceleration performance and fuel economy of the ship; while when traveling at high speeds, a fixed hydrofoil angle may cause excessive lift, causing excessive stress on the hull structure, affecting the safety and stability of the ship.
[0005] 2. Limited hydrodynamic efficiency: The design angle of the hydrofoil has a significant impact on hydrodynamic efficiency. Ideally, the hydrofoil angle should be adjusted in real time according to factors such as the ship's speed, load, and water flow to achieve optimal hydrodynamic efficiency. However, a constant hydrofoil angle cannot achieve this, resulting in the hydrofoil being unable to fully utilize the energy of the water flow under certain operating conditions, reducing the ship's propulsion efficiency and increasing energy consumption.
[0006] 3. Reduced steering flexibility: The constant angle of the hydrofoil will affect the steering performance of the ship. When turning, the hydrofoil needs to generate lateral lift to help the ship turn, but the fixed hydrofoil angle may not provide enough lateral lift, which increases the turning radius of the ship, reduces the steering flexibility, and affects the controllability and safety of the ship. Summary of the invention
[0007] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an adjustable hydrofoil assembly for hydrofoil boats and motorboats, which has a reasonable structural design and can adjust the angle of the hydrofoil board, thereby increasing the sailing speed and fuel economy, improving the maneuverability and reducing the hull bumps.
[0008] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: an adjustable hydrofoil assembly for a hydrofoil boat and a motorboat, comprising a front hydrofoil fixing cover plate, a front hydrofoil column, a front hydrofoil board, a cup head hexagon socket plug bolt, a hexagon nut, a first clamping plate nut set, a second clamping plate nut set, a cover and a front hydrofoil top rod, a front hydrofoil fixing cover plate is arranged on the top of the front hydrofoil column, a front hydrofoil board is arranged below the front hydrofoil column, the front hydrofoil fixing cover plate is fixed to the upper end of the front hydrofoil column by the cup head hexagon socket plug bolt and the hexagon nut, a cover is arranged on the outside of the front hydrofoil fixing cover plate, an electric push rod, a displacement sensor, a displacement sensor mounting frame and a stroke displacement member are arranged inside the front hydrofoil fixing cover plate, a displacement sensor is installed on the displacement sensor mounting frame, the electric push rod is connected to the front hydrofoil top rod through the stroke displacement member, the lower end of the front hydrofoil top rod is connected to the front hydrofoil board through the second clamping plate nut set, and the left side of the front hydrofoil column is hinged to the front hydrofoil board through the first clamping plate nut set.
[0009] Preferably, the front hydrofoil panel is an angle-adjustable hydrofoil panel.
[0010] The present invention has the following beneficial effects:
[0011] 1. Same speed requirement: When traveling at low speed, the angle of the hydrofoil can be adjusted to a state where a certain lift is generated but not too large, so that the hull can sail smoothly in the water, reduce water resistance and avoid excessive ups and downs of the hull due to excessive lift. When the ship accelerates to high speed, changing the angle of the hydrofoil can further increase the lift, lift the hull out of the water more efficiently, minimize the friction resistance of water to the hull, and improve the sailing speed and fuel economy.
[0012] 2. Improve maneuverability: When a ship is turning or making a U-turn, lateral forces in different directions can be generated by changing the angle of the hydrofoil, helping the ship to turn more flexibly.
[0013] 3. Reduce hull bumps: During navigation, the variable hydrofoil angle can be automatically adjusted according to the wave conditions, so that the hull always maintains a relatively stable state, reducing the up and down bumps and left and right shaking of the hull. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;
[0015] Figure 1 It is a front view of the present invention;
[0016] Figure 2 is a side view of the present invention;
[0017] Figure 3 A partial cross-sectional view of
[0018] Figure 4 for Figure 3A magnified schematic diagram of part A;
[0019] Figure 5 It is a stereogram of the present invention. DETAILED DESCRIPTION
[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0021] Reference Figure 1 , this specific embodiment adopts the following technical scheme: an adjustable hydrofoil assembly for a hydrofoil boat motorboat, comprising a front hydrofoil fixing cover plate 1, a front hydrofoil column 2, a front hydrofoil plate 3, a cup head hexagon socket plug bolt 4, a hexagon nut 5, a first clamping plate nut set 6, a second clamping plate nut set 7, a cover 8 and a front hydrofoil top rod 9, a front hydrofoil fixing cover plate 1 is arranged on the top of the front hydrofoil column 2, a front hydrofoil plate 3 is arranged under the front hydrofoil column 2, and the front hydrofoil fixing cover plate 1 is connected to the front hydrofoil column through the cup head hexagon socket plug bolt 4 and the hexagon nut 5. 2, a cover 8 is arranged on the outer side of the front hydrofoil fixed cover plate 1, an electric push rod 10, a displacement sensor 11, a displacement sensor mounting frame 12 and a stroke displacement member 13 are arranged inside the front hydrofoil fixed cover plate 1, the displacement sensor mounting frame 12 is mounted with the displacement sensor 11, the electric push rod 10 is connected to the front hydrofoil top rod 9 through the stroke displacement member 13, the lower end of the front hydrofoil top rod 9 is connected to the front hydrofoil plate 3 through the second clamping plate nut set 7, and the left side of the front hydrofoil column 2 is hinged to the front hydrofoil plate 3 through the first clamping plate nut set 6.
[0022] It is worth noting that the front hydrofoil panel 3 is an angle-adjustable hydrofoil panel.
[0023] The electric push rod 10 of this specific embodiment is connected to the front hydrofoil top rod 9 through the stroke displacement member 13. When the electric push rod 10 is extended or retracted, it will push or pull the stroke displacement member 13, thereby driving the front hydrofoil top rod 9 to move up and down. The lower end of the front hydrofoil top rod 9 is connected to the front hydrofoil plate 3 through the second clamping plate nut set 7. When the front hydrofoil top rod 9 moves up and down, it will change the angle of the front hydrofoil plate 3 relative to the front hydrofoil column 2. The left side of the front hydrofoil column 2 is hinged to the front hydrofoil plate 3 through the first clamping plate nut set 6. This hinge point allows the front hydrofoil plate 3 to rotate around this point, thereby achieving angle adjustment. The displacement sensor 11 is installed on the displacement sensor mounting frame 12 to monitor the angle change of the front hydrofoil plate 3. The displacement sensor 11 can provide real-time displacement data to ensure that the telescopic action of the electric push rod 10 accurately controls the angle of the front hydrofoil plate 3.
[0024] The adjustment mechanism of this specific embodiment can automatically adjust the angle, depth and other parameters of the hydrofoil according to the state of the ship. For example, when the load of the ship changes, the sensor senses the change in the draft of the hull, and then the electric push rod device automatically adjusts the hydrofoil so that the lift remains relatively stable, ensuring that the ship can sail smoothly. At the same time, in rough seas, the mechanism can also compensate for the ups and downs caused by the waves to maintain the stable posture of the hull.
[0025] The adjustable angle hydrofoil of this specific embodiment can adjust the angle according to the driver's habits, experience and specific navigation tasks to meet personalized needs. For example, some experienced drivers may prefer a steeper hydrofoil angle for more flexible maneuverability, while in tasks that require higher stability, such as transporting goods, it may be necessary to adjust to a more stable angle. Improve the adaptability and versatility of ships: ships with adjustable angle hydrofoils can be used in more different waters and environments, whether it is narrow rivers, shallow waters, or vast oceans and complex sea conditions, they can adapt by adjusting the hydrofoil angle. Ships with non-adjustable angle hydrofoils have relatively poor adaptability to waters and environments, and may not be able to perform at their best under certain conditions.
[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. An adjustable hydrofoil assembly for a hydrofoil boat, characterized in that: The invention comprises a front hydrofoil fixing cover plate (1), a front hydrofoil column (2), a front hydrofoil plate (3), a cup head inner hexagon plug bolt (4), a hexagon nut (5), a first clamping plate nut set (6), a second clamping plate nut set (7), a cover (8) and a front hydrofoil top rod (9). The front hydrofoil fixing cover plate (1) is arranged on the top of the front hydrofoil column (2), and the front hydrofoil plate (3) is arranged below the front hydrofoil column (2). The front hydrofoil fixing cover plate (1) is fixed to the upper end of the front hydrofoil column (2) by means of the cup head inner hexagon plug bolt (4) and the hexagon nut (5). A cover (8) is arranged on the side, an electric push rod (10), a displacement sensor (11), a displacement sensor mounting frame (12) and a stroke displacement member (13) are arranged inside the front hydrofoil fixed cover plate (1), the displacement sensor mounting frame (12) is mounted on the displacement sensor (11), the electric push rod (10) is connected to the front hydrofoil top rod (9) through the stroke displacement member (13), the lower end of the front hydrofoil top rod (9) is connected to the front hydrofoil plate (3) through a second clamping plate nut set (7), and the left side of the front hydrofoil column (2) is hinged to the front hydrofoil plate (3) through a first clamping plate nut set (6).
2. The adjustable hydrofoil assembly for a hydrofoil boat according to claim 1, characterized in that: The front hydrofoil plate (3) is an angle-adjustable hydrofoil plate.