Hydrofoil device and ship

Abstract

The invention discloses a hydrofoil device and a ship, and relates to the technical field of hydrofoil ships. The supporting frame comprises a supporting frame, and the supporting frame is fixedly arranged at the bottom of the ship body; the transmission assembly is arranged in the supporting frame, the end, away from the ship body, of the transmission assembly is exposed out of the supporting frame and connected with a hydrofoil assembly and a rotating mechanism, and the rotating mechanism is in transmission connection with the transmission assembly so as to be used for driving the transmission assembly to rotate; therefore, the hydrofoil assembly rotates in the first direction along with the transmission assembly. According to the hydrofoil device and the ship provided by the invention, the height of the stem or the ship body can be adjusted when the ship is berthed at a port wharf, so that the height difference between the stem or the ship body and the shore or the port wharf is reduced or avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrofoil ships, and in particular to a hydrofoil device and a ship. Background Art

[0002] During the shipping process, there is a certain correlation between the matching of ships and corresponding port terminals. There is a saying that ships need to rely on specific corresponding terminals within a specific navigation area. Therefore, a hydrofoil device that can rotate at multiple angles is particularly needed.

[0003] However, due to the differences in water levels in my country's coastal ports and the influence of dry and flood seasons on inland ports, there will be a large difference in the water levels in the two periods of the year, that is, the water level drops in the dry season and rises in the flood season. The difference between the two is too large, so when a ship enters the port terminal with the same draft, there will be a certain height difference between the main deck of the ship and the platform of the port terminal. In addition, the design of different ship types and the height design of the ship's freeboard will also affect the height difference between the ship and the terminal when it is docked. This will limit the ports and terminals suitable for ships to dock and the suitable time for docking to a certain extent. Summary of the invention

[0004] The object of the present invention is to provide a hydrofoil device and a ship, which can adjust the height of the bow or hull when the ship is docked at a port terminal to reduce or avoid the height difference between the bow or hull and the shore or port terminal.

[0005] In order to solve the above technical problems, the present invention provides a hydrofoil device, which is used to be installed on the bottom of a hull, and includes:

[0006] A support frame, the support frame is fixedly arranged on the bottom of the hull;

[0007] A transmission assembly, wherein the transmission assembly is arranged in the support frame, one end of the transmission assembly away from the hull is exposed from the support frame and is connected to a hydrofoil assembly,

[0008] A rotating mechanism, the rotating mechanism is in driving connection with the transmission assembly, and is used to drive the transmission assembly to rotate, so that the hydrofoil assembly follows the transmission assembly to rotate around a first direction;

[0009] Wherein, the first direction is the direction of the central axis of the transmission assembly.

[0010] Optionally, the hydrofoil assembly has at least a first state and / or a second state.

[0011] The first state refers to: the relatively curved arc surface of the hydrofoil assembly is close to the bottom of the hull, and the relatively straight surface of the hydrofoil assembly is away from the bottom of the hull. When the hydrofoil assembly rotates around the first direction, the water flow velocity of the arc surface is faster than that of the straight surface, so as to provide an upward lift for the hull;

[0012] The second state refers to: the relatively curved arc surface of the hydrofoil assembly is away from the bottom of the hull, and the relatively straight surface of the hydrofoil assembly is close to the bottom of the hull. When the hydrofoil assembly rotates around the first direction, the water flow velocity on the curved surface is faster than the water flow velocity on the straight surface, so as to provide downward pulling force for the hull.

[0013] Optionally, the hydrofoil assembly is connected to the transmission assembly via an angle adjustment device, and the angle adjustment device is used to adjust an angle α between the hydrofoil assembly and the second plane, wherein the range of α is 0-360°;

[0014] Wherein, the second plane refers to a plane perpendicular to the first direction;

[0015] Optionally, the angle α ranges from 0 to 180°.

[0016] Optionally, the transmission assembly is a transmission shaft, one end of the transmission shaft is transmission-connected to the rotating mechanism, the other end of the transmission shaft is provided with a rotating shaft, the axial direction of the rotating shaft is perpendicular to the first direction, the rotating shaft is fixedly connected to the hydrofoil assembly, and the angle adjustment device is used to drive the rotating shaft to rotate to adjust the angle α.

[0017] Optionally, the angle adjustment device includes a servo motor, and an output shaft of the servo motor is drivingly connected to the rotating shaft to control the rotation of the rotating shaft.

[0018] Optionally, the transmission assembly includes a transmission member, one end of which is transmission-connected to the rotating mechanism, and the transmission member is also provided with a crank-connecting rod mechanism, the crank-connecting rod mechanism includes a connecting rod and a crank, one end of the connecting rod is slidingly connected to the transmission member, the other end of the connecting rod is hinged to the crank, and the hydrofoil assembly is fixedly connected to the crank.

[0019] Optionally, the crank-connecting rod mechanism also includes a slider and a slider position control device, the slider is arranged between one end of the connecting rod and the transmission member, one end of the connecting rod is hinged to the slider so that one end of the connecting rod slides on the transmission member through the slider, and the slider position control device is transmission-connected to the slider for controlling the sliding position of the slider on the transmission member.

[0020] Optionally, the slider position control device adopts any one of motor drive control, piston drive control, and hydraulic drive control.

[0021] Wherein, the motor drive control adopts a servo motor or a stepper motor, and the output shaft of the servo motor or the stepper motor is transmission-connected with the slider to drive and control the sliding position of the slider on the transmission member;

[0022] The piston drive control adopts a piston cylinder and a piston rod, and the piston rod is transmission-connected with the slider to drive and control the sliding position of the slider on the transmission member;

[0023] The hydraulic drive control uses a hydraulic cylinder to drive and control the sliding position of the slider on the transmission member.

[0024] Optionally, the support frame is a streamlined structure.

[0025] The present invention also provides a ship, comprising a hull, wherein a hydrofoil device as described in any of the above embodiments is arranged at the bottom of the hull.

[0026] The present invention provides a hydrofoil device and a ship, wherein a support frame is provided at the bottom of the ship, a transmission assembly is provided in the support frame, an end of the transmission assembly away from the ship body extends out of the support frame and is connected to the hydrofoil assembly, and the transmission assembly is driven to rotate by a rotating mechanism, so that the hydrofoil assembly can follow the transmission assembly to rotate around a first direction, so that when the ship is stationary, the hydrofoil assembly can still move relative to the water body, so that a flow velocity difference is generated between the water flow velocity on one side of the relatively curved arc surface of the hydrofoil assembly and the relatively straight surface, so that a pressure difference is generated between the water body on the one side of the relatively curved arc surface and the relatively straight surface, thereby providing the ship body with corresponding upward lift or downward pulling force, and the height of the ship body can be adjusted, so that when the ship is docked at a port terminal, the height of the bow or the hull can be adjusted to reduce or avoid the height difference between the bow or the hull and the shore or the port terminal.

[0027] The hydrofoil device and the ship provided by the present invention have the advantages that the hydrofoil device can be used not only during normal navigation of the ship, but also when the ship is moored at the shore.

[0028] During normal navigation of the ship, the rotating mechanism of the hydrofoil device does not work. Relying on the speed difference between the hull and the water flow when sailing, when the hydrofoil assembly is in the first state, the hydrofoil device provides an upward lift for the hull to reduce the draft of the hull, thereby reducing the resistance of the water flow to the hull and increasing the speed of the ship; when the hydrofoil assembly is in the second state, it can also provide a downward pulling force for the hull to increase the draft of the hull, thereby increasing the hull's wind resistance.

[0029] After the ship docks, the rotating mechanism of the hydrofoil device works to drive the hydrofoil assembly to rotate through the transmission assembly, and a speed difference is formed between the hydrofoil assembly and the water body by relying on the rotation of the hydrofoil assembly itself. When the hydrofoil assembly is in the first state, the hydrofoil device provides an upward lift for the hull (or bow) to reduce the draft of the hull (or bow), and the hull (or bow) is lifted until it is flush with the shore or the height difference is reduced to a certain extent to achieve stability, which is convenient for passengers to disembark; when the hydrofoil assembly is in the second state, the hydrofoil device provides a downward pulling force for the hull (or bow) to increase the draft of the hull (or bow), and the hull (or bow) is lowered until it is flush with the shore or the height difference is reduced to a certain extent to achieve stability, which is convenient for passengers to disembark. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the prior art and the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic structural diagram of a hydrofoil device provided by the present invention;

[0032] Figure 2 It is a schematic structural diagram of a transmission assembly of a hydrofoil device in one embodiment of the present invention;

[0033] Figure 3 is a schematic structural diagram of a hydrofoil device in another embodiment of the present invention;

[0034] Figure 4 for Figure 3 The schematic structural diagram of the hydrofoil assembly of the hydrofoil device shown is in a first state;

[0035] Figure 5 for Figure 3 A schematic structural diagram of a hydrofoil assembly of the hydrofoil device shown in the second state;

[0036] Figure 6 for Figure 3 A schematic structural diagram of a hydrofoil assembly of the hydrofoil device shown in the second state;

[0037] Figure 7 is a schematic structural diagram of a hydrofoil device in another embodiment of the present invention;

[0038] Figure 8 for Figure 7 A schematic structural diagram of a partial cross-section of a support frame of a hydrofoil device is shown.

[0039] Reference numerals:

[0040] Support frame 1, transmission assembly 2, rotating mechanism 3, hydrofoil assembly 4, arc surface 41, flat surface 42, angle adjustment device 5, transmission shaft 21, rotating shaft 211, transmission member 22, crank connecting rod mechanism 51, connecting rod 511, crank 512, slider 513, slider position control device 515 DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Please refer to Figure 1-Figure 8 , Figure 1 A schematic diagram of the structure of a hydrofoil device provided by the present invention. The hydrofoil device includes a support frame 1, a transmission assembly 2, a rotating mechanism 3 and a hydrofoil assembly 4. The hydrofoil device is used to be installed at the bottom of a hull (not shown in the figure). The support frame 1 is fixedly arranged at the bottom of the hull, and optionally, the support frame 1 is sealed and connected to the bottom of the hull. The support frame 1 is a hollow structural member, and a transmission assembly 2 is arranged inside it. One end of the transmission assembly 2 away from the hull is exposed from the support frame 1 and is connected to the hydrofoil assembly 4. The rotating mechanism 3 is connected to the transmission assembly 2 in transmission connection. The rotating mechanism 3 can be installed in the hull, or between the hull and the support frame 1. The rotating mechanism 3 is used to drive the transmission assembly 2 to rotate, so that the hydrofoil assembly 4 rotates around a first direction following the transmission assembly 2. The first direction is the direction of the central axis of the transmission assembly 2. In Figure 1 The first direction is the OZ direction, and the hydrofoil assembly 4 can rotate in the XOY plane.

[0043] The hydrofoil device provided by the present invention can be used not only in normal navigation of a ship, but also when the ship is moored at a shore. The working process is as follows:

[0044] During normal navigation of the ship, the rotating mechanism 3 of the hydrofoil device does not work. Relying on the speed difference between the hull and the water flow when sailing, a velocity difference is generated between the water flow velocity on one side of the relatively curved arc surface 41 of the hydrofoil assembly and the relatively straight surface 42. According to Bernoulli's principle, a pressure difference is generated between the arc surface 41 and the straight surface 42, thereby providing an upward lift for the hull to reduce the draft of the hull, thereby reducing the resistance of the water flow to the hull and increasing the speed of the ship.

[0045] After the ship docks, the rotating mechanism 3 of the hydrofoil device works to drive the hydrofoil assembly 4 to rotate through the transmission assembly 2. Relying on the rotation of the hydrofoil assembly 4 itself, a speed difference is formed between the hydrofoil assembly 4 and the water body, so that a velocity difference is generated between the water flow velocity on one side of the relatively curved arc surface 41 of the hydrofoil assembly and the relatively straight surface 42. According to Bernoulli's principle, a pressure difference is generated between the arc surface 41 and the straight surface 42, thereby providing an upward lift for the hull to reduce the draft of the hull. The hull (or bow) is lifted until it is flush with the shore or the height difference is reduced to a certain extent and reaches stability, which is convenient for passengers to disembark.

[0046] In a specific embodiment, the hydrofoil assembly 4 has at least a first state and / or a second state. The first state refers to: the relatively curved arc surface 41 of the hydrofoil assembly 4 is close to the bottom of the hull, and the relatively straight flat surface 42 of the hydrofoil assembly 4 is away from the bottom of the hull. When the hydrofoil assembly 4 rotates around the first direction, the water flow velocity of the curved surface 41 is faster than the water flow velocity of the straight surface 42, so as to provide an upward lift for the hull; the second state refers to: the relatively curved arc surface 41 of the hydrofoil assembly 4 is away from the bottom of the hull, and the relatively straight flat surface 42 of the hydrofoil assembly 4 is close to the bottom of the hull. When the hydrofoil assembly 4 rotates around the first direction, the water flow velocity of the curved surface 41 is faster than the water flow velocity of the straight surface 42, so as to provide a downward pull for the hull.

[0047] Optionally, the hydrofoil assembly 4 can be fixedly connected to the end of the transmission assembly 2 away from the hull. When fixedly connected, the angle of attack of the hydrofoil assembly 4 cannot be adjusted, and it can be rotated at a fixed angle of attack, thereby providing lift or downward pulling force for the hull. For example, when the hydrofoil assembly 4 is fixedly connected, the hydrofoil assembly 4 can be in either the first state or the second state. At this time, two hydrofoil devices can be installed at the bottom of the hull, one of which is in the first state and the other is in the second state. In this way, when upward lift is needed, the hydrofoil device in the first state can be controlled to work, and when downward pulling force is needed, the hydrofoil device in the second state can be controlled to work.

[0048] Preferably, the hydrofoil assembly 4 can also be rotatably connected to the end of the transmission assembly 2 away from the hull. In this case, the angle of attack or tilt angle of the hydrofoil assembly 4 can be controlled and adjusted according to actual conditions, which can better provide lift or descending pulling force for the hull. Figure 2-Figure 8 That is, it is a schematic diagram of several embodiments of rotatable angle connection.

[0049] Specifically, the hydrofoil assembly 4 is connected to the transmission assembly 2 via an angle adjustment device 5. The angle adjustment device 5 is used to adjust the angle α between the hydrofoil assembly and the second plane. The second plane refers to a plane perpendicular to the first direction; that is, the second plane is Figure 1In the present invention, the angle α is the angle between the flat surface 42 of the hydrofoil assembly 4 and the XOY plane. Optionally, the angle α ranges from 0 to 360°, and the hydrofoil assembly 4 can rotate to any angle and can stay and stabilize at any angle. Figure 3 As shown, the angle α is 0°, and the hydrofoil assembly 4 is in the first state. Figure 5 As shown, the angle α is 180°, and the hydrofoil assembly 4 is in the second state.

[0050] In another embodiment, the angle α ranges from 0-180°, that is, the hydrofoil assembly 4 can rotate from a first state where α is 0°3 to a second state where α is 180°, and can rotate to any angle between the two states, and can stay and stabilize at any angle.

[0051] In a specific embodiment, Figure 2 As shown, the transmission assembly 2 is a transmission shaft 21. One end of the transmission shaft 21 is transmission-connected to the rotating mechanism 3, and the other end of the transmission shaft 21 is provided with a rotating shaft 211. The axial direction of the rotating shaft 211 is perpendicular to the first direction. The rotating shaft 211 is fixedly connected to the hydrofoil assembly 4, and the angle adjustment device 5 is used to drive the rotating shaft 211 to rotate to adjust the angle α. The angle adjustment device 5 includes a servo motor. The output shaft of the servo motor is transmission-connected to the rotating shaft 211 to control the rotation of the rotating shaft 211. Figure 2 In the embodiment, the output shaft of the servo motor is connected to the rotating shaft 211 by gear meshing. Of course, it can also be connected by other means, such as belts, chains, etc. The purpose is to control the rotation angle of the rotating shaft 211 by controlling the input current and voltage of the servo motor, as well as the time, so as to accurately control the angle α of the hydrofoil assembly 4. By controlling the angle α of the hydrofoil assembly 4, the angle of attack and the tilt angle of the hydrofoil assembly 4 can be controlled, so that the hydrofoil assembly 4 can provide greater lift or tension according to the actual water conditions.

[0052] In another specific embodiment, Figure 3-Figure 8 As shown, the transmission assembly 2 includes a transmission member 22. One end of the transmission member 22 is in transmission connection with the rotating mechanism 3. A crank-connecting rod mechanism 51 is also provided on the transmission member 22. The crank-connecting rod mechanism 51 includes a connecting rod 511 and a crank 512. One end of the connecting rod 511 is slidably connected to the transmission member 22, and the other end of the connecting rod 511 is hinged to the crank 512. The hydrofoil assembly 4 is fixedly connected to the crank 512. The angle adjustment device 5 can control the sliding of the connecting rod 511, so that the crank 512 can be driven to rotate through the crank-connecting rod mechanism 51, that is, the angle α of the hydrofoil assembly 4 is controlled.

[0053] Specifically, the crank-connecting rod mechanism 51 further includes a slider 513 and a slider position control device 515. The slider 513 is disposed between the transmission member 22 and one end of the connecting rod 511. One end of the connecting rod 511 is hinged to the slider 513 so that one end of the connecting rod 511 slides on the transmission member 22 through the slider 513. The slider position control device 515 is transmission-connected to the slider 513. The slider position control device 515 is used to control the sliding position of the slider 513 on the transmission member 22. The purpose of the slider position control device 515 is to drive the slider 513 to slide, and it can be any power source known to those skilled in the art, for example, the slider position control device 515 can be controlled by a motor drive, a piston drive, or a hydraulic drive.

[0054] When the motor drive control is adopted, the motor can be a servo motor or a stepper motor. The output shaft of the servo motor or the stepper motor is connected to the slider 513 in driving connection to drive and control the sliding position of the slider 513 on the transmission member 22.

[0055] When piston drive control is adopted, a piston cylinder and a piston rod may be adopted. The piston rod is connected to the slider 513 in a transmission manner to drive and control the sliding position of the slider 513 on the transmission member 22.

[0056] When hydraulic drive control is adopted, a hydraulic cylinder can be used to drive and control the sliding position of the slider 513 on the transmission member 22.

[0057] Preferably, a motor drive control method is adopted, and the position of the slider 513 can be accurately controlled by a servo motor or a stepper motor, thereby achieving precise control of the angle α of the hydrofoil assembly 4. At the same time, the hydrofoil assembly 4 can also be stably fixed at any angle α to achieve high working efficiency (such as a better angle of attack and tilt angle).

[0058] like Figure 7 As shown, in a specific embodiment, the support frame 1 is a streamlined structure. The side of the support frame 1 facing the bow is arc-shaped, and the side of the support frame 1 facing the stern is pointed, that is, the support frame 1 is round in front and pointed in the back with a smooth surface, so as to reduce the resistance between the support frame 1 and the water body during the navigation of the hull and increase the navigation speed.

[0059] It should be understood that when the hydrofoil device provided by the present invention has only the first state, that is, it can only provide lift for the hull. At this time, its working process is: when the hull is sailing normally, the rotating mechanism 3 does not work, and the hydrofoil device provides upward lift for the hull to reduce the draft of the hull, thereby reducing the resistance of the water flow to the hull and increasing the speed of the ship; after the ship is moored at the shore, the rotating mechanism 3 works, drives the hydrofoil assembly 4 to rotate through the transmission assembly 2, and relies on the rotation of the hydrofoil assembly 4 itself to form a speed difference between the hydrofoil assembly 4 and the water body, thereby providing upward lift for the hull to reduce the draft of the hull, and the hull (or bow) is lifted until it is flush with the shore or the height difference is reduced to a certain extent to achieve stability, which is convenient for passengers to disembark. At this time, it is suitable for the situation where the ship is moored at the shore and the bow is too low.

[0060] When the hydrofoil device provided by the present invention has only the second state, that is, it can only provide downward pulling force for the hull. At this time, its working process is: when the hull is sailing normally, the rotating mechanism 3 does not work, and the hydrofoil device provides downward pulling force for the hull to increase the draft of the hull, thereby increasing the wind resistance of the hull; after the ship is moored at the shore, the rotating mechanism 3 works, drives the hydrofoil assembly 4 to rotate through the transmission assembly 2, and relies on the rotation of the hydrofoil assembly 4 itself to form a speed difference between the hydrofoil assembly 4 and the water body, thereby providing downward pulling force for the hull to increase the draft of the hull, and the hull (or bow) descends until it is flush with the shore or the height difference is reduced to a certain extent to achieve stability, which is convenient for passengers to disembark. At this time, it is suitable for the situation where the ship is moored at the shore and the bow is too high.

[0061] When the hydrofoil device provided by the present invention adopts the angle adjustment device 5, its hydrofoil assembly 4 can be switched between a first state and a second state, and the angle of attack and the angle of inclination of each state can be controlled, so that the applicability to different situations (normal navigation, ship berthing with the bow too high, ship berthing with the bow too low) can be achieved by one hydrofoil device.

[0062] The present invention also provides a ship, comprising a hull, the bottom of which is provided with a hydrofoil device as described in any of the above-mentioned embodiments.

[0063] A hydrofoil device and a ship provided by the present invention innovatively combine a hydrofoil assembly 4 with a transmission assembly 2 and a rotating mechanism 3, so that when the ship is stationary (or the water flow velocity is very small relative to the ship), the hydrofoil assembly 4 can rotate by itself, thereby generating a speed difference between the hydrofoil assembly 4 and the water body, thereby generating the required upward lift or downward pulling force, that is, its advantage is that the hydrofoil device can not only be used for normal navigation of the ship, but also can be used when the ship is moored at the shore.

[0064] It should be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0065] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrofoil device for installation on a ship hull, characterized in that: include: A support frame, the support frame is fixedly arranged on the bottom of the hull; A transmission assembly, wherein the transmission assembly is arranged in the support frame, one end of the transmission assembly away from the hull is exposed from the support frame and is connected to a hydrofoil assembly, A rotating mechanism, the rotating mechanism is in driving connection with the transmission assembly, and is used to drive the transmission assembly to rotate, so that the hydrofoil assembly follows the transmission assembly to rotate around a first direction; Wherein, the first direction is the direction of the central axis of the transmission assembly.

2. The hydrofoil device according to claim 1, characterized in that: The hydrofoil assembly has at least a first state and / or a second state, The first state refers to: the relatively curved arc surface of the hydrofoil assembly is close to the bottom of the hull, and the relatively straight surface of the hydrofoil assembly is away from the bottom of the hull. When the hydrofoil assembly rotates around the first direction, the water flow velocity of the arc surface is faster than that of the straight surface, so as to provide an upward lift for the hull; The second state refers to: the relatively curved arc surface of the hydrofoil assembly is away from the bottom of the hull, and the relatively straight surface of the hydrofoil assembly is close to the bottom of the hull. When the hydrofoil assembly rotates around the first direction, the water flow velocity on the curved surface is faster than the water flow velocity on the straight surface, so as to provide downward pulling force for the hull.

3. The hydrofoil device according to claim 2, characterized in that: The hydrofoil assembly is connected to the transmission assembly via an angle adjustment device, and the angle adjustment device is used to adjust an angle α between the hydrofoil assembly and the second plane, wherein the range of α is 0-360°; Wherein, the second plane refers to a plane perpendicular to the first direction; Optionally, the angle α ranges from 0 to 180°.

4. The hydrofoil device according to claim 3, characterized in that: The transmission assembly is a transmission shaft, one end of which is transmission-connected to the rotating mechanism, and the other end of the transmission shaft is provided with a rotating shaft, the axial direction of the rotating shaft is perpendicular to the first direction, the rotating shaft is fixedly connected to the hydrofoil assembly, and the angle adjustment device is used to drive the rotating shaft to rotate so as to adjust the angle α.

5. The hydrofoil device according to claim 4, characterized in that: The angle adjustment device comprises a servo motor, and an output shaft of the servo motor is drivingly connected to the rotating shaft to control the rotation of the rotating shaft.

6. The hydrofoil device according to claim 3, characterized in that: The transmission assembly includes a transmission member, one end of which is transmission-connected to the rotating mechanism, and the transmission member is also provided with a crank-connecting rod mechanism, which includes a connecting rod and a crank, one end of the connecting rod is slidingly connected to the transmission member, and the other end of the connecting rod is hinged to the crank, and the hydrofoil assembly is fixedly connected to the crank.

7. The hydrofoil device according to claim 6, characterized in that: The crank-connecting rod mechanism also includes a slider and a slider position control device. The slider is arranged between one end of the connecting rod and the transmission member. One end of the connecting rod is hinged to the slider so that one end of the connecting rod slides on the transmission member through the slider. The slider position control device is transmission-connected to the slider for controlling the sliding position of the slider on the transmission member.

8. The hydrofoil device according to claim 7, characterized in that: The slider position control device adopts any one of motor drive control, piston drive control and hydraulic drive control. Wherein, the motor drive control adopts a servo motor or a stepper motor, and the output shaft of the servo motor or the stepper motor is transmission-connected with the slider to drive and control the sliding position of the slider on the transmission member; The piston drive control adopts a piston cylinder and a piston rod, and the piston rod is transmission-connected with the slider to drive and control the sliding position of the slider on the transmission member; The hydraulic drive control uses a hydraulic cylinder to drive and control the sliding position of the slider on the transmission member.

9. The hydrofoil device according to any one of claims 1 to 8, characterized in that: The support frame is a streamlined structure.

10. A ship, characterized in that: The invention comprises a hull, the bottom of which is provided with a hydrofoil device as claimed in any one of claims 1 to 9.

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