Waterplane angle of attack self-adaptable hydrofoil ship

Abstract

The application discloses a hydrofoil boat with self-adaptable attack angle of hydrofoil, which comprises a hull, a support frame and a plurality of hydrofoils, the support frame is fixedly arranged at the bottom of the hull, the plurality of hydrofoils are distributed along the length direction of the hull, the hydrofoils are eccentrically and rotationally arranged at the bottom end of the support frame with a defined angle, and when the hydrofoils are located at initial positions, the connection positions of the hydrofoils and the support frame are located between the center of the end surface of the hydrofoils and the bow of the hull. In the hydrofoil boat with self-adaptable attack angle of hydrofoil, the hydrofoils are eccentrically and rotationally arranged at the bottom end of the support frame with a defined angle, so that the hydrofoils can be driven by waves to passively and self-adaptively adjust the attack angle, compared with the active adjustment mode in the prior art, the attack angle can be timely adjusted according to the state of the waves, so that the hydrofoils have sufficient lift to lift the hull, and the consequences, such as speed reduction and posture inclination of the hull under the influence of waves, are avoided.

Description

Technical Field

[0001] This invention relates to the field of hydrofoil technology, and more particularly to a hydrofoil with adaptively adjustable angle of attack. Background Technology

[0002] A hydrofoil is a type of vessel that uses the pressure difference between the upper and lower surfaces of a hydrofoil to elevate the hull, thereby achieving high-speed navigation. Since its invention, the hydrofoil has attracted widespread attention in the international maritime community. As part of the movement towards high technology, high performance, and cutting-edge technology, research on hydrofoils will continue to deepen.

[0003] Patent application number 202211318063.2 discloses a hydrofoil fishing boat with adjustable angle of attack. In this design, the angle of attack of the hydrofoil is adjusted by an adaptive angle of attack control system. The adjustment steps are as follows: the attitude sensor is used to acquire the heave of the boat; the controller determines the change of the angle of attack of the hydrofoil based on the heave of the boat; the actuator controls the first motor and the second motor to adjust the extension and retraction of the first telescopic shaft and the second telescopic shaft according to the change of the angle of attack of the hydrofoil, so as to increase / decrease the angle of attack of the hydrofoil.

[0004] The above solution uses an electric motor to actively adjust the hydrofoil's angle of attack. However, due to the lag in active adjustment (the hydrofoil's angle of attack is adjusted after the hull begins to heave), the hydrofoil may experience a decrease in speed and tilting under the influence of waves, and may even be at risk of capsizing. Therefore, it is necessary to improve the hydrofoil's wave resistance. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a hydrofoil boat with adaptively adjustable angle of attack. This solves the technical problem that the angle of attack adjustment method of the existing hydrofoil fishing boat is active adjustment. Due to the lag of the active adjustment method, under the influence of waves, it may lead to the hydrofoil boat's speed decrease, attitude tilting, and even the risk of capsizing.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a hydrofoil boat with adaptively adjustable angle of attack, comprising:

[0007] hull;

[0008] The support frame is fixedly installed at the bottom of the hull;

[0009] Multiple hydrofoils are distributed along the length of the hull; the hydrofoils are eccentrically mounted at the bottom of the support frame at a defined angle, and when the hydrofoils are in their initial position, the connection point between the hydrofoils and the support frame is located between the center of the hydrofoil end face and the bow of the ship.

[0010] Furthermore, the hydrofoil includes two sub-hydrofoils symmetrically distributed on both sides of the hull, one end of which is eccentrically mounted at a defined angle at the bottom end of the support frame.

[0011] Furthermore, the hydrofoil boat with adaptively adjustable angle of attack also includes a hydrofoil connection mechanism, one end of which is rotatably connected to the bottom end of the support frame at a defined angle, and the other end is eccentrically fixedly connected to the end face of the sub-hydrofoil.

[0012] Furthermore, the hydrofoil boat with adaptively adjustable angle of attack also includes a matching outer ring and an inner ring. The inner ring is rotatably fitted inside the outer ring at a limited angle. The outer ring is fixedly mounted on the support frame. One end of the hydrofoil connecting mechanism is fixedly connected to the inner ring.

[0013] Furthermore, the hydrofoil boat with adaptively adjustable angle of attack also includes a limiting component, which includes a limiting protrusion fixedly disposed on the outer surface of the inner ring, and a limiting groove is formed in the side wall of the outer ring to limit the swing angle of the limiting protrusion when the inner ring rotates.

[0014] Furthermore, when the sub-hydrofoil is in its initial position, the limiting protrusion is located in the middle of the limiting groove.

[0015] Furthermore, the limiting component also includes an elastic element, and the elastic element is fixedly connected to both sides of the limiting protrusion, and the end of the elastic element away from the limiting protrusion abuts against or is fixedly connected to the groove wall of the limiting groove.

[0016] Furthermore, the hydrofoil connection mechanism includes a rotating shaft, a coupling, and a connecting shaft connected in sequence. The end of the rotating shaft away from the coupling is fixedly connected to the inner ring, and the end of the connecting shaft away from the coupling is fixedly connected to the sub-hydrofoil.

[0017] Furthermore, the two sub-hydrofoils in the same hydrofoil share a single shaft, and one end of the shaft passes through the inner ring and connects to the coupling on the other side.

[0018] Furthermore, the coupling is a flexible coupling.

[0019] Furthermore, the hydrofoil boat with adaptively adjustable angle of attack also includes multiple shock absorbers, which are disposed between the hull and the support frame.

[0020] Compared with the prior art, the beneficial effects of the present invention include:

[0021] In the hydrofoil boat with adaptively adjustable angle of attack, the hydrofoil is eccentrically mounted at the bottom of the support frame and rotated at a limited angle, so that the hydrofoil can be passively and adaptively adjusted by the water waves. Compared with the active adjustment method in the prior art, this solution can adjust the angle of attack in a timely manner according to the state of the water waves, so as to ensure that the hydrofoil has sufficient lift to support the hull, thereby avoiding the consequences of the hull slowing down or tilting under the influence of waves. Attached Figure Description

[0022] Figure 1 This is a first-view structural diagram of a hydrofoil boat with adaptively adjustable angle of attack provided by the present invention;

[0023] Figure 2 This is a schematic diagram showing the position of the connection between the hydrofoil and the support frame on the end face of the hydrofoil in this embodiment;

[0024] Figure 3 yes Figure 1 Enlarged schematic diagram of part A in the middle;

[0025] Figure 4 yes Figure 3 Enlarged schematic diagram of part B in the middle;

[0026] Figure 5 This is a structural schematic diagram of a hydrofoil boat with adaptively adjustable angle of attack, provided by the present invention, from a second perspective. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] This invention provides a hydrofoil boat with adaptively adjustable angle of attack, the structure of which is as follows: Figure 1 and Figure 2 As shown, the system includes a hull 1, a support frame 2, and multiple hydrofoils 3. The support frame 2 is fixedly installed at the bottom of the hull 1. The multiple hydrofoils 3 are distributed along the length of the hull 1. The hydrofoils 3 are eccentrically mounted at the bottom end of the support frame 2 at a defined angle. When the hydrofoils 3 are in their initial position, the connection point between the hydrofoils 3 and the support frame 2 is located between the center of the end face of the hydrofoil 3 and the bow of the ship. Specifically, when the hydrofoils 3 are in their initial position, the angle of attack of the hydrofoils 3 is 0 to 12°, and the angle of rotation of the hydrofoils 3 to the left or right does not exceed 5°, that is, the defined angle does not exceed 10°.

[0029] In the hydrofoil boat with adaptively adjustable angle of attack, the hydrofoil 3 is eccentrically mounted at the bottom of the support frame 2 by rotating it at a limited angle. This allows the hydrofoil 3 to be driven by the water waves to passively and adaptively adjust its angle of attack. Compared with the active adjustment method in the prior art, this solution can adjust the angle of attack in a timely manner according to the state of the water waves, so as to ensure that the hydrofoil 3 has sufficient lift to lift the hull 1, thereby avoiding the consequences of the hull slowing down or tilting under the influence of waves.

[0030] Specifically, the hydrofoil 3 includes two sub-hydrofoils 30 symmetrically distributed on both sides of the hull 1. One end of the sub-hydrofoil 30 is eccentrically mounted at the bottom of the support frame 2 at a limited angle.

[0031] It is understandable that by setting the hydrofoil 3 to include two sub-hydrofoils symmetrically distributed on both sides of the hull 1, the connection and installation of the hydrofoil 3 and the support frame 2 can be facilitated.

[0032] To facilitate the connection between the sub-hydrofoil 30 and the support frame 2, in a preferred embodiment, the hydrofoil boat with adaptively adjustable hydrofoil angle of attack further includes a hydrofoil connection mechanism 4. One end of the hydrofoil connection mechanism 4 is rotatably connected to the bottom end of the support frame 2 at a limited angle, and the other end is eccentrically fixedly connected to the end face of the sub-hydrofoil 30.

[0033] like Figure 3 What is shown is Figure 1 In the enlarged schematic diagram of part A in the middle, in order to realize the rotational connection between the hydrofoil connecting mechanism 4 and the support frame 2, as a preferred embodiment, the hydrofoil boat with adaptively adjustable hydrofoil angle of attack also includes a matching outer ring 5 and inner ring 6. The inner ring 6 is rotatably sleeved inside the outer ring 5 at a limited angle. The outer ring 5 is fixedly set on the support frame 2. One end of the hydrofoil connecting mechanism 4 is fixedly connected to the inner ring 6.

[0034] It is understandable that by setting an outer ring 5 and an inner ring 6 for rotational engagement, and fixing the outer ring 5 and the inner ring 6 to the support frame 2 and the hydrofoil connecting mechanism 4 respectively, the hydrofoil connecting mechanism 4 and the support frame 2 can be quickly connected.

[0035] like Figure 4 What is shown is Figure 3 In the enlarged schematic diagram of part B in the middle, in order to enable the inner ring 6 to rotate relative to the outer ring 5 at a limited angle, as a preferred embodiment, the hydrofoil with adaptively adjustable angle of attack also includes a limiting component 7. The limiting component 7 includes a limiting protrusion 71 fixedly disposed on the outer surface of the inner ring 6, and a limiting groove 50 is formed in the side wall of the outer ring 5 to limit the swing angle of the limiting protrusion 71 when the inner ring 6 rotates.

[0036] Furthermore, when the sub-hydrofoil 30 is in the initial position, the limiting protrusion 71 is located in the middle of the limiting groove 50.

[0037] It is understood that by opening the limiting groove 50 on the side wall of the outer ring 5 and fixing the limiting protrusion 71 on the outer surface of the inner ring 6, when the inner ring 6 rotates relative to the outer ring 5, the limiting protrusion 71 can swing within the limiting groove 50, and the limiting groove 50 can limit the swing angle of the limiting groove 50, thereby realizing that the inner ring 6 rotates relative to the outer ring 5 at a limited angle.

[0038] In a preferred embodiment, the limiting component 7 further includes an elastic element 72, which is fixedly connected to both sides of the limiting protrusion 71, and the end of the elastic element 72 away from the limiting protrusion 71 abuts against or is fixedly connected to the groove wall of the limiting groove 50; specifically, the elastic element 72 is a spring.

[0039] It is understandable that when the sub-hydrofoil 30 is driven to rotate by the water waves, it can drive the inner ring 6 to rotate relative to the outer ring 5, and drive the limiting protrusion 71 to swing within the limiting groove 50. During this process, the elastic element 72 will be compressed. Under the elastic force of the elastic element 72, the limiting protrusion 71 will be pushed back to the middle position of the limiting groove 50, thereby realizing the reset of the sub-hydrofoil 30.

[0040] Please continue to refer to Figure 3 In a preferred embodiment, the hydrofoil connecting mechanism 4 includes a rotating shaft 41, a coupling 42, and a connecting shaft 43 connected in sequence. The end of the rotating shaft 41 away from the coupling 42 is fixedly connected to the inner ring 6, and the end of the connecting shaft 43 away from the coupling 42 is fixedly connected to the sub-hydrofoil 30. In a specific embodiment, the coupling 42 is a flexible coupling.

[0041] To simplify the structure, in a preferred embodiment, the two sub-hydrofoils 30 in the same hydrofoil 3 share a single shaft 41, and one end of the shaft 41 passes through the inner ring 6 and is connected to the coupling 42 on the other side.

[0042] like Figure 5The diagram shown is a second-view structural schematic of a hydrofoil boat with adaptively adjustable angle of attack provided by the present invention. In order to buffer the vibration generated during operation and improve comfort, as a preferred embodiment, the hydrofoil boat with adaptively adjustable angle of attack also includes multiple shock absorbers 8, which are disposed between the hull 1 and the support frame 2. Specifically, the shock absorbers 8 can be spring shock absorbers, hydraulic shock absorbers, or shock absorbers made of special shock-absorbing materials to achieve the shock absorption effect.

[0043] To facilitate understanding of the present invention, the following is combined with... Figures 1-5 The working principle of this solution will be explained in detail:

[0044] When a hydrofoil is sailing on water and encounters waves, the sub-hydrofoil 30 is driven by the waves and rotates at a certain angle, thereby adaptively adjusting its angle of attack. Specifically, when the hull 1 rises with the waves, the sub-hydrofoil 30 is driven by the waves and its angle of attack decreases; when the hull 1 falls with the waves, the sub-hydrofoil is driven by the waves and its angle of attack increases.

[0045] Furthermore, when the torque generated by the elastic force of the elastic member 72 on the limiting protrusion 71 is greater than the torque of the water wave on the sub-hydrofoil 30, the sub-hydrofoil 30 will gradually return to its original position so that it can lift the hull 1 at a suitable angle of attack.

[0046] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A hydrofoil boat with adaptively adjustable angle of attack, characterized in that, include: hull; The support frame is fixedly installed at the bottom of the hull; Multiple hydrofoils are distributed along the length of the hull; the hydrofoils are eccentrically mounted at the bottom of the support frame at a defined angle, and when the hydrofoils are in their initial position, the connection point between the hydrofoils and the support frame is located between the center of the hydrofoil end face and the bow of the ship. The hydrofoil includes two sub-hydrofoils symmetrically distributed on both sides of the hull; It also includes a hydrofoil connecting mechanism, one end of which is rotatably connected to the bottom end of the support frame at a defined angle, and the other end is eccentrically fixed to the end face of the sub-hydrofoil. It also includes a matching outer ring and an inner ring, wherein the inner ring is rotatably fitted inside the outer ring at a limited angle, the outer ring is fixedly mounted on the support frame, and one end of the hydrofoil connecting mechanism is fixedly connected to the inner ring; It also includes a limiting component, which includes a limiting protrusion fixedly disposed on the outer surface of the inner ring, and a limiting groove is formed in the side wall of the outer ring to limit the swing angle of the limiting protrusion when the inner ring rotates; Furthermore, when the sub-hydrofoil is in its initial position, the limiting protrusion is located in the middle of the limiting groove; The hydrofoil can rotate to the left or right at an angle not exceeding 5°, so as to adjust the angle of attack according to the state of the waves, so that the hydrofoil has sufficient lift to support the hull.

2. The hydrofoil boat with adaptively adjustable angle of attack according to claim 1, characterized in that, The limiting component also includes an elastic element, and the elastic element is fixedly connected to both sides of the limiting protrusion. The end of the elastic element away from the limiting protrusion abuts against or is fixedly connected to the groove wall of the limiting groove.

3. A hydrofoil boat with adaptively adjustable angle of attack according to claim 1, characterized in that, The hydrofoil connection mechanism includes a rotating shaft, a coupling, and a connecting shaft connected in sequence. The end of the rotating shaft away from the coupling is fixedly connected to the inner ring, and the end of the connecting shaft away from the coupling is fixedly connected to the sub-hydrofoil.

4. A hydrofoil boat with adaptively adjustable angle of attack according to claim 3, characterized in that, Two sub-hydrofoils in the same hydrofoil share a single shaft, and one end of the shaft passes through the inner ring and connects to the coupling on the other side.

5. A hydrofoil boat with adaptively adjustable angle of attack according to claim 3, characterized in that, The coupling is a flexible coupling.

6. A hydrofoil boat with adaptively adjustable angle of attack according to claim 1, characterized in that, It also includes multiple shock absorbers, which are disposed between the hull and the support frame.

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