Hydrofoil craft and using method thereof

Abstract

The invention relates to the technical field of ship engineering, in particular to a hydrofoil craft and a using method of the hydrofoil craft, the hydrofoil craft comprises a craft body, swing pieces, floating bodies, a first power generation mechanism and propellers, the swing pieces are connected to the left side and the right side of the craft body in an up-down rotating mode, and the floating bodies are connected to the ends, away from the craft body, of the swing pieces; the floating body comprises a resistance reducing part and a floating increasing part, the front end of the resistance reducing part is sharp, the section of the resistance reducing part is gradually increased from front to back, and the floating increasing part is connected to the rear end of the resistance reducing part; the first power generation mechanism comprises hydraulic cylinders and a hydraulic power generation device, the hydraulic power generation device is arranged on the boat body, the hydraulic cylinders are hinged to the left side and the right side of the boat body correspondingly, and the ends, away from the boat body, of the hydraulic cylinders are hinged to the corresponding swing parts correspondingly. Hydraulic oil in the hydraulic cylinder drives the hydraulic power generation device to generate power; the hydraulic power generation device supplies power to the propellers, and the cruising ability of the hydrofoil craft is improved.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a hydrofoil and a method of using a hydrofoil. Background Technology

[0002] Hydrofoils utilize the hydrodynamic lift generated by hydrofoils to raise most of the hull above the water surface, reducing drag and overcoming the water resistance limitations of traditional ships to achieve high-speed navigation. However, hydrofoils are powered by an engine driving a propeller, which requires frequent refueling or charging, making it difficult to meet long-range requirements. Summary of the Invention

[0003] Based on this, the object of the present invention is to provide a hydrofoil, comprising: Hull; The oscillating components are rotatably connected to both the left and right sides of the hull. The float is connected to one end of each of the swinging members away from the hull. The float includes a drag-reducing part and a buoyancy-enhancing part. The front end of the drag-reducing part is pointed and the cross-section of the drag-reducing part gradually increases from front to back. The buoyancy-enhancing part is connected to the rear end of the drag-reducing part. The first power generation mechanism includes a hydraulic cylinder and a hydraulic power generation device. The hydraulic power generation device is located on the hull. The hydraulic cylinder is hinged to both the left and right sides of the hull. The end of the hydraulic cylinder away from the hull is respectively hinged to the corresponding swing member. The swing member swings to drive the hydraulic cylinder to extend and retract, so that the hydraulic oil in the hydraulic cylinder drives the hydraulic power generation device to generate electricity. A propulsion unit is connected to the hull, and a hydraulic power generation device is electrically connected to the propulsion unit.

[0004] In some embodiments, the drag-reducing portion is a tapered shape that is tapered from front to back and gradually increases in width.

[0005] In some embodiments, the cross-section of the buoyancy-enhancing section decreases continuously from front to back, and the front end of the buoyancy-enhancing section is connected to the rear end of the drag-reducing section.

[0006] In some embodiments, the buoyancy-enhancing section and the drag-reducing section enclose a receiving cavity, and the hydrofoil further includes a second power generation mechanism disposed in the receiving cavity; The second power generation mechanism includes a guide column, a mass block, a first elastic element, a first gear, and a first generator. The guide column is arranged vertically, and the mass block is slidably sleeved on the guide column. One end of the first elastic element is connected to the mass block, and the other end is connected to the cavity wall of the receiving cavity. A first rack portion is provided on one side of the guide column, and the first gear meshes with the first rack portion. The first generator is connected to the cavity wall of the receiving cavity, and the input shaft of the first generator is drivenly connected to the first gear. The first generator is electrically connected to the thruster.

[0007] In some embodiments, the second power generation mechanism includes a first rotating shaft, a second gear, and a third gear. The first rotating shaft is rotatably connected to the cavity wall of the receiving cavity. The first gear is anti-rotatingly connected to the first rotating shaft. The second gear is anti-rotatingly connected to the first rotating shaft. The third gear is connected to the input shaft of the first generator. The second gear and the third gear mesh. The number of teeth of the second gear is greater than the number of teeth of the third gear.

[0008] In some embodiments, the second power generation mechanism further includes a second rack, a fourth gear, and a second generator. The second rack is disposed on the guide post and arranged symmetrically with the first rack. The fourth gear meshes with the second rack. The second generator is connected to the cavity wall of the receiving cavity, and the input shaft of the second generator is drivenly connected to the fourth gear.

[0009] In some embodiments, the second power generation mechanism further includes a second rotating shaft, a fifth gear, and a sixth gear. The second rotating shaft is rotatably connected to the cavity wall of the receiving cavity. The fifth gear is anti-rotatingly connected to the second rotating shaft. The sixth gear is anti-rotatingly connected to the input shaft of the second generator. The sixth gear and the fifth gear mesh, and the number of teeth of the fifth gear is greater than the number of teeth of the sixth gear.

[0010] In some embodiments, the second power generation mechanism further includes a second elastic element, which is arranged symmetrically above and below the first elastic element, and the second elastic element connects the mass block and the cavity wall of the receiving cavity.

[0011] In some embodiments, the hydrofoil further includes a sail and a sail adjustment mechanism, the sail being rotatably connected to the hull, the sail adjustment mechanism being connected to the hull and drively connected to the sail, and the sail adjustment mechanism being configured to drive the sail to rotate.

[0012] This application also provides a method of using a hydrofoil, employing the aforementioned hydrofoil, wherein the hydrofoil further includes an energy storage device electrically connected to a first power generation mechanism, and the hydrofoil has a mission mode and a charging mode; in the mission mode, if the energy storage device's charge is higher than a first set value, the hydrofoil is propelled forward by a sail, and / or the energy storage device supplies power to a propeller to propel the hydrofoil forward; if the energy storage device's charge is lower than the first set value, the mission mode is exited and the charging mode is entered; in the charging mode, the course is adjusted to navigate in a course that maximizes the power generation efficiency of the first power generation mechanism.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The hydrofoil of the present invention includes a hull, a oscillating element, a float, a first power generation mechanism, and a propeller. Oscillating elements are rotatably connected to the left and right sides of the hull. Each oscillating element has a float connected to its end furthest from the hull. The float includes a drag-reducing section and a buoyancy-enhancing section. The drag-reducing section has a pointed front end and its cross-section gradually increases from front to rear. The buoyancy-enhancing section is connected to the rear end of the drag-reducing section. The first power generation mechanism includes a hydraulic cylinder and a hydraulic power generation device. The hydraulic power generation device is located on the hull. Hydraulic cylinders are hinged to the left and right sides of the hull, and the ends of the hydraulic cylinders furthest from the hull are respectively hinged to corresponding... The oscillating component, when the hydrofoil is in motion, guides the water flow smoothly around its surface, minimizing flow separation and vortex generation. The oscillating component reduces the drag generated by the float. Moreover, when the hydrofoil is in motion, the impact force of the waves can lift the float, causing the oscillating component to swing up and down. The swinging component causes the hydraulic cylinder to extend and retract, so that the hydraulic oil in the hydraulic cylinder drives the hydraulic generator to generate electricity. The propeller is connected to the hull, and the hydraulic generator is electrically connected to the propeller, supplying power to the propeller, thus improving the hydrofoil's endurance. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of the hydrofoil used in this application; Figure 2 This is a top view of the hydrofoil of this application; Figure 3 This is a side view of the hydrofoil of this application; Figure 4 This is a front view of the hydrofoil of this application; Figure 5 This is a side view of the floating body; Figure 6 for Figure 5 Sectional view along line AA; Figure 7 for Figure 5 Sectional view along the BB direction; Figure 8 for Figure 7 Enlarged view of a section at point E in the middle; Figure 9 for Figure 5 C-axis sectional view; Figure 10 for Figure 9 Enlarged view of a section at point D; In the diagram, 1. Hull, 11. Main body of the hull, 111. Connecting bridge, 112. Portal hull, 113. Starboard hull, 12. Fore hydrofoil, 13. Rear hydrofoil, 2. Oscillating component, 3. Float, 31. Drag reduction section, 32. Buoyancy enhancement section, 33. Receiving cavity, 4. Hydraulic cylinder, 5. Propeller, 611. Guide column, 612. First rack section, 613. Second rack section, 62. Mass block, 631. First elastic element, 632. Second elastic element, 641. First gear, 642. Second gear, 643. Third gear, 644. Fourth gear, 645. Fifth gear, 646. Sixth gear, 651. First power generation mechanism, 652. Second power generation mechanism, 661. First shaft, 662. Second shaft, 7. Sail. Detailed Implementation

[0015] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0016] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, 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 the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0017] like Figures 1 to 10As shown, a preferred embodiment of the hydrofoil of this application includes a hull 1, a swaying member 2, a float 3, a first power generation mechanism 651, and a propeller 5. Swaying members 2 are rotatably connected to the left and right sides of the hull 1. Each swaying member 2 has a float 3 connected to its end furthest from the hull 1. The float 3 includes a drag-reducing section 31 and a buoyancy-enhancing section 32. The drag-reducing section 31 has a pointed front end and its cross-section gradually increases from front to back. The buoyancy-enhancing section 32 is connected to the rear end of the drag-reducing section 31. The first power generation mechanism 651 includes a hydraulic cylinder 4 and a hydraulic power generation device. The hydraulic power generation device is located on the hull 1. Hydraulic cylinders 4 are hinged to the left and right sides of the hull 1. The ends of the hydraulic cylinders 4 furthest from the hull 1 are respectively hinged to the corresponding swaying members 2. When the hydrofoil is in motion, the float 3... Due to its pointed conical structure and gradually changing cross-section design, the drag-reducing section 31 can guide the water flow to smoothly bypass the surface of the float 3, significantly suppressing flow separation and vortex generation, thereby effectively reducing the hydrodynamic resistance experienced by the float 3 during navigation. Moreover, when the hydrofoil is sailing, the impact force of the waves can lift the float 3, causing it to bounce up and down, which in turn drives the oscillating component 2 to swing up and down. The swinging component 2 drives the hydraulic cylinder 4 to extend and retract, causing the hydraulic oil in the hydraulic cylinder 4 to drive the hydraulic generator to generate electricity. The propeller 5 is connected to the hull 1, and the hydraulic generator is electrically connected to the propeller 5, supplying power to the propeller 5. This improves the hydrofoil's endurance and solves the technical problem of insufficient endurance caused by the reliance on a single power source in traditional hydrofoils. Furthermore, the core principle of traditional wave energy generation devices, such as oscillating floats, pendulums, and nodding ducks, is to design the device's natural frequency to be close to or consistent with the wave frequency of the target sea area. This resonance effect amplifies the device's motion amplitude, thereby improving energy capture efficiency. However, traditional wave energy generation devices only achieve high power generation efficiency within the resonant frequency range. Once the wave frequency deviates from the natural frequency, the energy capture efficiency drops sharply. This results in poor adaptability to wave conditions, making them unsuitable for handling multi-frequency waves in complex sea areas, such as low-frequency large waves near the shore and high-frequency small waves in the open sea, leading to insufficient power generation stability in practical applications. In this application, the float 3 is connected to the hull 1 via swinging components 2 hinged to both sides of the hull 1 and hydraulic cylinders 4 hinged to the swinging components 2. The rotation angle of the swinging components 2 and the extension / retraction stroke of the hydraulic cylinders 4 are not limited by a fixed frequency. Even with small-amplitude, high-frequency waves or large-amplitude, low-frequency waves, as long as the float 3 produces a perceptible up-and-down movement, it can drive the hydraulic cylinders 4 to extend and retract, thereby driving the hydraulic power generation device to generate electricity, without needing to resonate with the natural frequency of the float 3 / swinging components 2. Therefore, the first power generation unit 651 of this application does not need to be optimized for wave frequency in a specific sea area, and can generate electricity stably in complex wave conditions with multiple frequencies and amplitudes.

[0018] In some embodiments of this application, such as Figure 5As shown, the drag-reducing section 31 is a tapered shape with a pointed front and a gradually tapering rear. Specifically, the axis of the drag-reducing section 31 is aligned with the direction of navigation. The pointed tip of the drag-reducing section 31 can cleave the water flow, reducing the pressure drag generated by the water flow impact. At the same time, the gradually tapering cross-section avoids sudden separation of the water flow on the surface of the drag-reducing section 31, suppresses the generation of vortices, and ensures the stability of the drag reduction effect. The drag-reducing section 31 and the rear end are smoothly connected to the buoyancy-enhancing section 32.

[0019] In some embodiments of this application, the cross-section of the buoyancy-enhancing part 32 decreases continuously from front to back, and the front end of the buoyancy-enhancing part 32 is connected to the rear end of the drag-reducing part 31, forming a teardrop-shaped structure. In some embodiments of this application, the buoyancy-enhancing part 32 is hemispherical, with the spherical surface of the buoyancy-enhancing part 32 facing rearward. The planar section of the buoyancy-enhancing part 32 is connected to the rear end of the drag-reducing part 31. The rearward design of the hemispherical buoyancy-enhancing part 32 allows the water flow to naturally converge along the spherical surface, avoiding the formation of a large-area vortex at the tail of the float 3. Moreover, the hemispherical structure has the characteristics of large volume and uniform force distribution, which can provide sufficient buoyancy in a limited space, ensuring that the float 3 maintains a stable draft in waves of different frequencies and heights, providing a stable force basis for wave capture. The surface of the float 3 is smooth and continuous, reducing the viscous friction damping of the float 3 when it bounces up and down.

[0020] In some embodiments of this application, such as Figures 6 to 10As shown, the buoyancy-enhancing part 32 and the drag-reducing part 31 enclose the receiving cavity 33. The hydrofoil also includes a second power generation mechanism 652 disposed in the receiving cavity 33. The second power generation mechanism 652 includes a guide post 611, a mass block 62, a first elastic element 631, a first gear 641, and a first generator 651. The guide post 611 is arranged vertically. The mass block 62 is slidably sleeved on the guide post 611. The mass block 62 has a through hole in the middle, and the guide post 611 passes through the through hole. One end of the first elastic element 631 is connected to the mass block 62, and the other end is connected to the cavity wall of the receiving cavity 33. A first rack part 612 is provided on one side of the guide post 611. The first gear 641 meshes with the first rack part 612. The first generator 651 is connected to the cavity wall of the receiving cavity 33, and the input shaft of the first generator 651 is connected to the first gear 641 for transmission. During the hydrofoil's operation, the float 3 bounces up and down, causing the guide column 611 and the first rack 612 to move synchronously. Due to inertia, the mass block 62 slides vertically relative to the guide column 611. The relative motion between the mass block 62 and the first rack 612 causes the first gear 641 meshing with the first rack 612 to rotate. The first gear 641 drives the input shaft of the first generator 651 to rotate through the transmission structure, enabling the first generator 651 to convert mechanical energy into electrical energy. At the same time, the first elastic element 631 undergoes expansion and contraction deformation during the movement of the mass block 62. On the one hand, it buffers the collision impact between the mass block 62 and the wall of the cavity 33. On the other hand, it assists the mass block 62 to quickly reset through elastic restoring force, increasing its reciprocating motion frequency and enhancing power generation efficiency. The first generator 651 is electrically connected to the propeller 5, and the second power generation mechanism 652 can also supply power to the propeller 5. The setting of the second power generation mechanism 652 further improves the endurance of the hydrofoil of this application.

[0021] In some embodiments of this application, the second power generation mechanism 652 includes a first rotating shaft 661, a second gear 642, and a third gear 643. The first rotating shaft 661 is rotatably connected to the cavity wall of the receiving cavity 33. The first gear 641 is anti-rotatingly connected to the first rotating shaft 661, and the second gear 642 is also anti-rotatingly connected to the first rotating shaft 661. The third gear 643 is connected to the input shaft of the first generator 651. The second gear 642 and the third gear 643 mesh, and the number of teeth on the second gear 642 is greater than the number of teeth on the third gear 643. Because the number of teeth on the second gear 642 is greater than the number of teeth on the third gear 643, they form a speed-increasing transmission mechanism when meshing. The low-speed rotation of the second gear 642 is converted into the high-speed rotation of the third gear 643. The third gear 643 drives the input shaft of the first generator 651 to rotate at high speed, enabling the generator to generate electricity efficiently within its rated speed range.

[0022] In some embodiments of this application, the second power generation mechanism 652 further includes a second rack portion 613, a fourth gear 644, and a second generator 652. The second rack portion 613 is disposed on the guide post 611 and symmetrically arranged with the first rack portion 612. The fourth gear 644 meshes with the second rack portion 613. The second generator 652 is connected to the cavity wall of the receiving cavity 33, and the input shaft of the second generator 652 is drively connected to the fourth gear 644. The second rack portion 613 and the first rack portion 612 move vertically reciprocally synchronously with the guide post 611. The fourth gear 644 rotates in the opposite direction to the first gear 641, but both can independently drive the corresponding generator to generate electricity. The symmetrically arranged rack portion and gear set make the left and right meshing forces on the mass block 62 cancel each other out when it slides, avoiding problems such as tilting of the guide post 611 and increased wear caused by unilateral force, improving the service life and operational stability of the overall transmission structure, and also improving the power generation efficiency.

[0023] In some embodiments of this application, the second power generation mechanism 652 further includes a second rotating shaft 662, a fifth gear 645, and a sixth gear 646. The second rotating shaft 662 is rotatably connected to the cavity wall of the receiving cavity 33. The fifth gear 645 is anti-rotatingly connected to the second rotating shaft 662, and the sixth gear 646 is anti-rotatingly connected to the input shaft of the second generator 652. The sixth gear 646 and the fifth gear 645 mesh, and the number of teeth of the fifth gear 645 is greater than the number of teeth of the sixth gear 646. Specifically, the sixth gear 646 and the fifth gear 645 constitute a speed-increasing mechanism. The second rotating shaft 662 and the first rotating shaft 661 are symmetrically arranged, the fourth gear 644 and the first gear 641 are symmetrically arranged and have the same number of teeth, the fifth gear 645 and the second gear 642 are symmetrically arranged and have the same number of teeth, and the sixth gear 646 and the third gear 643 are symmetrically arranged and have the same number of teeth.

[0024] In some embodiments of this application, the second power generation mechanism 652 further includes a second elastic element 632, which is arranged symmetrically with the first elastic element 631. The second elastic element 632 connects the mass block 62 and the cavity wall of the receiving cavity 33. When the float 3 bounces up and down, causing the mass block 62 to slide upward along the guide post 611, the first elastic element 631 is compressed and the second elastic element 632 is stretched, with both elastic elements jointly storing elastic potential energy. When the mass block 62 slides downward along the guide post 611, the compressive restoring force of the first elastic element 631 and the tensile restoring force of the second elastic element 632 act synchronously, driving the mass block 62 to quickly reset and increasing its reciprocating sliding frequency. The symmetrical reset action of the two elastic elements enables the mass block 62 to maintain a stable reciprocating sliding amplitude at any vibration frequency.

[0025] In some embodiments of this application, the hydrofoil also includes a sail 7 and a sail adjustment mechanism. The sail 7 is rotatably connected to the hull 1, and the sail adjustment mechanism is connected to the hull 1 and driven by the sail 7. The sail adjustment mechanism is configured to drive the sail 7 to rotate. Based on the navigation direction and real-time wind direction, the sail adjustment mechanism drives the sail 7 to rotate around a rotation axis, adjusting the windward angle of the sail 7. This decomposes the wind force on the sail 7 into a propulsive component along the navigation direction, assisting the propeller 5 in propelling the hydrofoil forward and reducing the power consumption of the propeller 5.

[0026] In some embodiments of this application, the hydrofoil also includes a photovoltaic power generation device, which is mounted on the hull 1 and electrically connected to the propeller 5. Specifically, the hydrofoil also includes an energy storage device. The photovoltaic power generation device includes photovoltaic panels, a combiner box, and a charging controller. The photovoltaic panel assembly is laid on the deck surface of the hull 1. The photovoltaic panel assembly absorbs solar energy and converts it into direct current. After being collected by the combiner box and regulated by the charging controller, the direct current is stored in the energy storage device. The output terminals of the first power generation mechanism 651 and the second power generation mechanism 652 are both connected to the storage device. The propeller 5 includes a propeller and a drive motor, which is electrically connected to the energy storage device.

[0027] In some embodiments of this application, the hull 1 includes a hull body 11, a front hydrofoil 12, and a rear hydrofoil 13. The hull body 11 is a catamaran structure, including a connecting bridge 111, a left hull 112 connected to the left side of the connecting bridge 111, and a right hull 113 connected to the right side of the connecting bridge 111. Front hydrofoils 12 are provided at the front of both the left hull 112 and the right hull 113, and rear hydrofoils 13 are provided at the rear of both the left hull 112 and the right hull 113. The two front hydrofoils 12 are T-shaped hydrofoils, providing the main lift for the hull; the two rear hydrofoils 13 are L-shaped hydrofoils, providing secondary lift for the hull 1. The front hydrofoils 12 can be rotated by a servo motor. Rotating the front hydrofoils 12 can change the direction of travel of the hull 1, providing good maneuverability. The sail 7 is mounted on the connecting bridge 111, and sensors for monitoring wind speed and direction are arranged on the sail 7. In some embodiments of this application, the sail 7 is a rigid sail 7, which adopts a NACA symmetrical airfoil.

[0028] This application also provides an embodiment of the above-mentioned method of using a hydrofoil. The hydrofoil further includes an energy storage device electrically connected to the first power generation mechanism 651. The hydrofoil has a mission mode and a charging mode. In mission mode: if the power of the energy storage device is higher than a first set value, the hydrofoil is propelled forward by the sail 7, and / or the energy storage device supplies power to the propeller 5 to propel the hydrofoil forward. If the power of the energy storage device is lower than the first set value, the mission mode is exited and the charging mode is entered. In charging mode, the course is adjusted to navigate in a course that maximizes the power generation efficiency of the first power generation mechanism 651. The hydrofoil's navigation modes include mission mode and charging mode.

[0029] Specifically, the goal of mission mode is to efficiently execute navigation tasks. If wind energy is sufficient: it uses pure sail 7 for navigation, and the wave energy device generates electricity normally. If wind energy is insufficient: it activates the electric auxiliary propulsion unit, and the wave energy device generates electricity normally. If the battery is extremely low: it immediately exits mission mode and enters charging mode.

[0030] The goal of the charging mode is to prioritize restoring the battery power to a safe level. In charging mode, the course is adjusted to find crosswinds or tailwinds, maximizing the power generation efficiency of the wave energy generator or achieving the optimal sail angle. If wind power is sufficient: pure sail 7 navigation is maintained, utilizing wave energy for charging; when the battery power is restored to a moderate level, the charging mode is exited, and the mission mode is returned. If wind power is insufficient: depending on the current battery power, if it is not extremely low, the electric auxiliary propulsion unit is activated to maintain a course and speed conducive to power generation; if the battery power is extremely low, pure sail 7 navigation is used, and when the battery power is restored to a moderate or higher level, the charging mode is exited, and the mission mode is returned. The battery power is measured in six levels: high, medium-high, medium, medium-low, low, and extremely low. These six levels correspond to battery power ratios of 80%-100%, 60%-79%, 40-59%, 20%-39%, 10%-19%, and 0%-9%, respectively; the first set value corresponds to a battery power value of 10%.

[0031] In summary, the hydrofoil of the present invention includes a hull 1, a oscillating element 2, a float 3, a first power generation mechanism 651, and a propeller 5. The oscillating element 2 is rotatably connected to both the left and right sides of the hull 1. Each oscillating element 2 has a float 3 connected to its end furthest from the hull 1. The float 3 includes a drag-reducing section 31 and a buoyancy-enhancing section 32. The drag-reducing section 31 has a pointed front end and its cross-section gradually increases from front to back. The buoyancy-enhancing section 32 is connected to the rear end of the drag-reducing section 31. The first power generation mechanism 651 includes a hydraulic cylinder 4 and a hydraulic power generation device. The hydraulic power generation device is located on the hull 1. The hydraulic cylinder 4 is hinged to both the left and right sides of the hull 1. The hydraulic cylinder 4 is furthest from the hull 1. One end of each component is hinged to the corresponding swinging component 2. When the hydrofoil is sailing, the drag reduction part 31 can guide the water flow to smoothly bypass its surface, minimizing flow separation and vortex generation. The drag reduction part 31 reduces the travel resistance generated by the float 3. Moreover, when the hydrofoil is sailing, the impact force of the waves can lift the float 3, causing the swinging component 2 to swing up and down. The swinging component 2 causes the hydraulic cylinder 4 to extend and retract, so that the hydraulic oil in the hydraulic cylinder 4 drives the hydraulic generator to generate electricity. The propeller 5 is connected to the hull 1, and the hydraulic generator is electrically connected to the propeller 5. The hydraulic generator supplies power to the propeller 5, improving the hydrofoil's endurance.

[0032] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A hydrofoil, characterized in that, include: Hull (1); The swinging component (2) is connected to the left and right sides of the hull (1) in a vertical rotational manner. The float (3) is connected to one end of each of the swing members (2) away from the hull (1). The float (3) includes a drag-reducing part (31) and a buoyancy-enhancing part (32). The front end of the drag-reducing part (31) is pointed and the cross section of the drag-reducing part (31) gradually increases from front to back. The buoyancy-enhancing part (32) is connected to the rear end of the drag-reducing part (31). The first power generation mechanism (651) includes a hydraulic cylinder (4) and a hydraulic power generation device. The hydraulic power generation device is located on the hull (1). The hydraulic cylinder (4) is hinged to both the left and right sides of the hull (1). The end of the hydraulic cylinder (4) away from the hull (1) is respectively hinged to the corresponding swing member (2). The swing member (2) swings to drive the hydraulic cylinder (4) to extend and retract, so that the hydraulic oil in the hydraulic cylinder (4) drives the hydraulic power generation device to generate electricity. The thruster (5) is connected to the hull (1), and the hydraulic power generation device is electrically connected to the thruster (5).

2. The hydrofoil according to claim 1, characterized in that, The drag-reducing section (31) is a cone shape that is tapered from front to back and gradually increases in thickness.

3. The hydrofoil according to claim 1, characterized in that, The cross-section of the buoyancy-enhancing section (32) decreases continuously from front to back, and the front end of the buoyancy-enhancing section (32) is connected to the rear end of the drag-reducing section (31).

4. The hydrofoil according to claim 1, characterized in that, The buoyancy-enhancing part (32) and the drag-reducing part (31) enclose the receiving cavity (33), and the hydrofoil also includes a second power generation mechanism (652) disposed in the receiving cavity (33). The second power generation mechanism (652) includes a guide post (611), a mass block (62), a first elastic element (631), a first gear (641), and a first generator (651). The guide post (611) is arranged vertically. The mass block (62) is slidably sleeved on the guide post (611). One end of the first elastic element (631) is connected to the mass block (62), and the other end is connected to the cavity wall of the receiving cavity (33). A first rack portion (612) is provided on one side of the guide post (611). The first gear (641) meshes with the first rack portion (612). The first generator (651) is connected to the cavity wall of the receiving cavity (33), and the input shaft of the first generator (651) is drivenly connected to the first gear (641). The first generator (651) is electrically connected to the thruster (5).

5. The hydrofoil according to claim 4, characterized in that, The second power generation mechanism (652) includes a first rotating shaft (661), a second gear (642), and a third gear (643). The first rotating shaft (661) is rotatably connected to the cavity wall of the receiving cavity (33). The first gear (641) is anti-rotating connected to the first rotating shaft (661). The second gear (642) is anti-rotating connected to the first rotating shaft (661). The third gear (643) is connected to the input shaft of the first generator (651). The second gear (642) and the third gear (643) mesh. The number of teeth of the second gear (642) is greater than the number of teeth of the third gear (643).

6. The hydrofoil according to claim 4, characterized in that, The second power generation mechanism (652) further includes a second rack (613), a fourth gear (644), and a second generator (652). The second rack (613) is disposed on the guide post (611) and is symmetrically arranged with the first rack (612). The fourth gear (644) meshes with the second rack (613). The second generator (652) is connected to the cavity wall of the receiving cavity (33), and the input shaft of the second generator (652) is drivenly connected to the fourth gear (644).

7. The hydrofoil according to claim 6, characterized in that, The second power generation mechanism (652) further includes a second rotating shaft (662), a fifth gear (645), and a sixth gear (646). The second rotating shaft (662) is rotatably connected to the cavity wall of the receiving cavity (33). The fifth gear (645) is anti-rotatingly connected to the second rotating shaft (662). The sixth gear (646) is anti-rotatingly connected to the input shaft of the second generator (652). The sixth gear (646) and the fifth gear (645) mesh. The number of teeth of the fifth gear (645) is greater than the number of teeth of the sixth gear (646).

8. The hydrofoil according to claim 4, characterized in that, The second power generation mechanism (652) further includes a second elastic element (632), which is arranged symmetrically above and below the first elastic element (631). The second elastic element (632) connects the mass block (62) and the cavity wall of the receiving cavity (33).

9. The hydrofoil according to claim 1, characterized in that, The hydrofoil also includes a sail (7) and a sail adjustment mechanism. The sail (7) is rotatably connected to the hull (1). The sail adjustment mechanism is connected to the hull (1) and is drively connected to the sail (7). The sail adjustment mechanism is configured to drive the sail (7) to rotate.

10. A method of using a hydrofoil, characterized in that, The hydrofoil described in claim 9 further includes an energy storage device electrically connected to the first power generation mechanism (651). The hydrofoil has a navigation mode with a mission mode and a charging mode. In the mission mode, if the power of the energy storage device is higher than a first set value, the hydrofoil is propelled forward by the sail (7) and / or the energy storage device is used to supply power to the propeller (5) to propel the hydrofoil forward. If the power of the energy storage device is lower than the first set value, the mission mode is exited and the charging mode is entered. In the charging mode, the heading is adjusted to navigate in a heading that maximizes the power generation efficiency of the first power generation mechanism (651).

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