A hydrofoil device and a ship

Abstract

This invention discloses a hydrofoil device and a vessel, relating to the field of hydrofoil technology. It includes a support frame fixedly mounted on the bottom of the hull; a transmission assembly disposed within the support frame, with one end of the transmission assembly away from the hull protruding from the support frame and connected to the hydrofoil assembly; and a rotating mechanism connected to the transmission assembly for driving the transmission assembly to rotate, thereby causing the hydrofoil assembly to rotate around a first direction following the transmission assembly. The hydrofoil device and vessel provided by this invention can adjust the height of the bow or hull when the vessel is docked at a port, thereby reducing or avoiding the height difference between the bow or hull and the shore or port dock.

Description

Technical Field

[0001] This invention relates to the field of hydrofoil technology, and in particular to a hydrofoil device and a vessel. Background Technology

[0002] During shipping, there is a certain correlation between the matching between ships and corresponding port terminals. Therefore, there is a saying that ships need to rely on specific corresponding terminals in a specific navigation area. Hence, there is a particular need for a hydrofoil device that can rotate at multiple angles.

[0003] However, existing hydrofoil devices have limitations. Due to differences in water levels at coastal ports in my country, and the influence of dry and wet seasons at inland river ports, water levels can vary significantly within the same year. Specifically, water levels drop during the dry season and rise during the wet season. This large difference can lead to a height difference between the main deck of a ship and the platform of the port pier when the ship enters the port with the same draft. In addition, the design of different ship types and the height of the ship's freeboard can also affect the height difference between the ship and the pier when it is berthed. This, to some extent, limits the ports and piers that ships can berth at and the time they can berth at. Summary of the Invention

[0004] The purpose of this invention is to provide a hydrofoil device and a vessel that can adjust the height of the bow or hull when the vessel is docked at a port, so as to reduce or avoid the height difference between the bow or hull and the shore or port.

[0005] To solve the above-mentioned technical problems, the present invention provides a hydrofoil device for installation on the bottom of a ship's hull. The hydrofoil device includes:

[0006] A support frame, which is fixedly installed at the bottom of the hull;

[0007] A transmission assembly is disposed within the support frame, with one end of the transmission assembly, furthest from the hull, protruding from the support frame and connected to a hydrofoil assembly.

[0008] A rotating mechanism is connected to the transmission assembly to drive the transmission assembly to rotate, thereby causing the hydrofoil assembly to rotate around a first direction following the transmission assembly.

[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 following: the relatively curved arc surface of the hydrofoil assembly is close to the bottom of the hull, and the relatively flat straight surface of the hydrofoil assembly is far away from the bottom of the hull. When the hydrofoil assembly rotates around the first direction, the water flow velocity on the arc surface is faster than that on the flat surface, so as to provide upward lift to the hull.

[0012] The second state refers to the following: the relatively curved arc surface of the hydrofoil assembly is away from the bottom of the hull, and the relatively flat 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 arc surface is faster than that on the flat surface, so as to provide a downward pull on the hull.

[0013] Optionally, the hydrofoil assembly and the transmission assembly are connected by an angle adjustment device, which is used to adjust the 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 component is a transmission shaft, one end of which is connected to the rotating mechanism, and the other end of which is provided with a rotating shaft. The axis of the rotating shaft is perpendicular to the first direction, and the rotating shaft is fixedly connected to the hydrofoil assembly. The angle adjustment device is used to drive the rotating shaft to rotate in order to adjust the angle α.

[0017] Optionally, the angle adjustment device includes a servo motor, the output shaft of which is connected to the rotating shaft for controlling the rotation of the rotating shaft.

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

[0019] Optionally, the crank-connecting rod mechanism further includes a slider and a slider position control device. The slider is disposed 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 via the slider. The slider position control device is drivenly connected to the slider to control 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] The motor drive control uses a servo motor or a stepper motor, and the output shaft of the servo motor or stepper motor is connected to the slider to drive and control the sliding position of the slider on the transmission component.

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

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

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

[0025] The present invention also provides a vessel, including a hull, wherein the bottom of the hull is provided with a hydrofoil device as described in any of the foregoing embodiments.

[0026] This invention provides a hydrofoil device and a vessel, the bottom of which is equipped with a support frame, and a transmission component is installed inside the support frame. The end of the transmission component away from the hull extends out of the support frame and is connected to the hydrofoil component. The transmission component is driven to rotate by a rotating mechanism, so that the hydrofoil component can rotate around a first direction with the transmission component. Thus, when the vessel is stationary, the hydrofoil component can still generate relative movement with the water, so that a velocity difference is generated between the relatively curved arc surface of the hydrofoil component and the relatively straight flat surface of the water, and a pressure difference is generated between the relatively curved arc surface and the relatively straight flat surface of the water, thereby providing the hull with corresponding upward lift or downward pull. This allows for adjustment of the hull height, so that when the vessel is docked at a port, the height of the bow or hull can be adjusted to reduce or avoid the height difference between the bow or hull and the shore or port.

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

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

[0029] After the vessel docks, the hydrofoil's rotating mechanism activates, driving the hydrofoil assembly to rotate via a transmission component. This rotation creates a speed difference between the hydrofoil assembly and the water. In the first state, the hydrofoil provides upward lift to the hull (or bow), reducing its draft. The hull (or bow) rises until it is level with the shore or the height difference decreases to a certain extent, facilitating passenger disembarkation. In the second state, the hydrofoil provides downward pull to the hull (or bow), increasing its draft. The hull (or bow) descends until it is level with the shore or the height difference decreases to a certain extent, facilitating passenger disembarkation. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0032] Figure 2 This is a schematic diagram of the transmission assembly of a hydrofoil device according to one embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of a hydrofoil device according to another embodiment of the present invention;

[0034] Figure 4 for Figure 3 A schematic diagram of the hydrofoil assembly of the hydrofoil device in its first state;

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

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

[0037] Figure 7 This is a schematic diagram of a hydrofoil device according to another embodiment of the present invention;

[0038] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the support frame of the hydrofoil device.

[0039] Figure label:

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

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please refer to Figures 1-8 , Figure 1 This is a schematic diagram 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 for installation on the bottom of a hull (not shown in the figure). The support frame 1 is fixedly installed on the bottom of the hull; optionally, the support frame 1 is sealed to the bottom of the hull. The support frame 1 is a hollow structure, and the transmission assembly 2 is disposed inside it. The end of the transmission assembly 2 away from the hull protrudes from the support frame 1 and is connected to the hydrofoil assembly 4. The rotating mechanism 3 is driven by the transmission assembly 2. The rotating mechanism 3 can be installed inside the hull or between the hull and the support frame 1. The rotating mechanism 3 drives the transmission assembly 2 to rotate, thereby causing the hydrofoil assembly 4 to rotate around a first direction following the transmission assembly 2. The first direction is the direction of the central axis of the transmission assembly 2. Figure 1 The first direction is the OZ direction, and the hydrofoil assembly 4 can rotate in the XOY plane.

[0043] This invention provides a hydrofoil device that can be used not only during normal navigation but also when the ship is moored at shore. Its working process is as follows:

[0044] During normal navigation, the rotating mechanism 3 of the hydrofoil device does not operate. Relying on the speed difference between the ship and the water flow, a speed difference is generated between the curved surface 41 of the hydrofoil assembly and the water flow on the relatively straight surface 42. According to Bernoulli's law, a pressure difference is generated between the curved surface 41 and the straight surface 42, thereby providing upward lift to the ship, reducing the ship's draft, thereby reducing the resistance of the water flow to the ship and increasing the ship's speed.

[0045] After the ship docks, the rotating mechanism 3 of the hydrofoil device operates, driving the hydrofoil assembly 4 to rotate via the transmission component 2. The rotation of the hydrofoil assembly 4 creates a speed difference between the hydrofoil assembly 4 and the water, resulting in a speed difference between the curved surface 41 of the hydrofoil assembly and the water flow on the relatively straight surface 42. According to Bernoulli's principle, a pressure difference is generated between the curved surface 41 and the straight surface 42, thereby providing upward lift to the hull to reduce the hull's draft. The hull (or bow) rises until it is level with the shore or the height difference decreases to a certain extent to achieve stability, at which point it is convenient for passengers to disembark.

[0046] In one specific embodiment, the hydrofoil assembly 4 has at least a first state and / or a second state. The first state refers to the following: the relatively curved arcuate 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 far away from the bottom of the hull. When the hydrofoil assembly 4 rotates around a first direction, the water flow velocity on the arcuate surface 41 is faster than the water flow velocity on the flat surface 42, thereby providing upward lift to the hull. The second state refers to the following: the relatively curved arcuate surface 41 of the hydrofoil assembly 4 is far 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 on the arcuate surface 41 is faster than the water flow velocity on the flat surface 42, thereby providing downward pull to the hull.

[0047] Optionally, the hydrofoil assembly 4 can be fixedly connected to the end of the transmission assembly 2 furthest from the hull. When fixedly connected, the angle of attack of the hydrofoil assembly 4 cannot be adjusted, and it can rotate at a fixed angle of attack to provide lift or drag for the hull. For example, when the hydrofoil assembly 4 is fixedly connected, it can be in either a first state or a second state. In this case, two hydrofoil devices can be installed on the bottom of the hull, one in the first state and the other in the second state. Thus, when upward lift is needed, the hydrofoil device in the first state is controlled to operate; when downward drag is needed, the hydrofoil device in the second state is controlled to operate.

[0048] Preferably, the hydrofoil assembly 4 can also be rotatably connected to the end of the transmission assembly 2 furthest 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, providing better lift or descent force to the hull. Figures 2-8 This is a schematic diagram of several embodiments of rotatable angle connections.

[0049] Specifically, the hydrofoil assembly 4 and the transmission assembly 2 are connected 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 1The XOY plane is shown in the diagram. In this invention, 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°, allowing the hydrofoil assembly 4 to rotate arbitrarily at any angle and remain stable at any angle. Figure 3 As shown, when angle α is 0°, hydrofoil assembly 4 is in its first state. Figure 5 As shown, when the angle α is 180°, the hydrofoil assembly 4 is in the second state.

[0050] In another embodiment, the angle α ranges from 0 to 180°, meaning that 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 at any angle between the two states, and can stay and stabilize at any angle.

[0051] In one specific implementation, such as Figure 2 As shown, the transmission assembly 2 is a transmission shaft 21. One end of the transmission shaft 21 is 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, thereby adjusting the angle α. The angle adjustment device 5 includes a servo motor. The output shaft of the servo motor is connected to the rotating shaft 211 to control the rotation of the rotating shaft 211. Figure 2 In this configuration, the output shaft of the servo motor and the rotating shaft 211 are connected by gear meshing. Of course, other methods, such as belts or chains, can also be used. The purpose is to control the rotation angle of the rotating shaft 211 by controlling the input current, voltage, and time of the servo motor, thereby precisely controlling the angle α of the hydrofoil assembly 4. Controlling the angle α of the hydrofoil assembly 4 controls its angle of attack and tilt angle, allowing it to provide greater lift or thrust according to the actual water conditions.

[0052] In another specific implementation, such as Figures 3-8 As shown, the transmission assembly 2 includes a transmission member 22. One end of the transmission member 22 is connected to the rotating mechanism 3. The transmission member 22 is also equipped with a crank-connecting rod mechanism 51. 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, thereby driving the crank 512 to rotate through the crank-connecting rod mechanism 51, thus achieving control of the angle α of the hydrofoil assembly 4.

[0053] Specifically, the crank-connecting rod mechanism 51 also 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, allowing one end of the connecting rod 511 to slide on the transmission member 22 via the slider 513. The slider position control device 515 is drively 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; it can be any power source known to those skilled in the art, such as motor drive control, piston drive control, or hydraulic drive control.

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

[0055] When piston-driven control is used, a piston cylinder and a piston rod can be employed. The piston rod is driven and connected to the slider 513 to control the sliding position of the slider 513 on the transmission component 22.

[0056] When hydraulic drive control is used, the sliding position of slider 513 on transmission component 22 can be controlled by a hydraulic cylinder.

[0057] Preferably, a motor-driven control method is adopted. The position of the slider 513 can be precisely 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 be stably fixed at any angle α, achieving high working efficiency (such as a better angle of attack and tilt angle).

[0058] like Figure 7 As shown, in one specific embodiment, the support frame 1 has 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 has a smooth shape with a rounded front and a pointed back, so as to reduce the resistance between the support frame 1 and the water during the hull's navigation and increase the navigation speed.

[0059] It is important to understand that when the hydrofoil device provided by this invention is only in its first state, it can only provide lift to the hull. In this state, its operation is as follows: When the hull is sailing normally, the rotating mechanism 3 is not working, and the hydrofoil device provides upward lift to the hull, reducing its draft and thus reducing water resistance and increasing speed. After the vessel is moored at shore, the rotating mechanism 3 operates, driving the hydrofoil assembly 4 to rotate via the transmission component 2. The rotation of the hydrofoil assembly 4 creates a speed difference between it and the water, providing upward lift to the hull and reducing its draft. The hull (or bow) rises until it is level with the shore or the height difference decreases to a certain extent, achieving stability, making it easier for passengers to disembark. This is suitable for situations where the vessel is moored at shore but the bow is too low.

[0060] When the hydrofoil device provided by this invention only has the second state, that is, it can only provide downward pulling force to the hull. In this state, its operation is as follows: When the hull is sailing normally, the rotating mechanism 3 is not working, and the hydrofoil device provides downward pulling force to the hull to increase the hull's draft, thereby increasing the hull's wind resistance; after the ship docks, the rotating mechanism 3 works, driving the hydrofoil assembly 4 to rotate through the transmission component 2. Relying on the rotation of the hydrofoil assembly 4 itself, a speed difference is created between the hydrofoil assembly 4 and the water, thereby providing downward pulling force to the hull to increase the hull's draft. The hull (or bow) descends until it is level with the shore or the height difference decreases to a certain extent to achieve stability, at which point it is convenient for passengers to disembark. This is suitable for situations where the ship is docked 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 switch between the first state and the second state, and can control the angle of attack and tilt angle of each state, so that it can be adapted to different situations (normal navigation, ship docking at the shore with the bow too high, ship docking at the shore with the bow too low) with one hydrofoil device.

[0062] The present invention also provides a vessel comprising a hull. The bottom of the hull is provided with a hydrofoil device as described in any of the preceding embodiments.

[0063] The present invention provides a hydrofoil device and a ship, which innovatively combines the hydrofoil assembly 4 with the transmission assembly 2 and the rotating mechanism 3. Thus, when the ship is stationary (or the water velocity relative to the ship is very low), the hydrofoil assembly 4 can rotate on its own, thereby creating a speed difference between the hydrofoil assembly 4 and the water, and thus generating the required upward lift or downward pull. Its advantage is that the hydrofoil device can be used not only for normal ship navigation, but also for ship mooring at the shore.

[0064] It should be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrofoil device for mounting to a hull, characterised in that, The water wing device comprises: a support frame fixedly arranged on the bottom of the ship body; a transmission assembly arranged in the support frame, an end of the transmission assembly away from the ship body being exposed from the support frame and connected with a water wing assembly, a rotating mechanism in transmission connection with the transmission assembly for driving the transmission assembly to rotate so that the water wing assembly rotates around a first direction along with the transmission assembly; wherein the first direction is the central axis direction of the transmission assembly; the water wing assembly has at least a first state and / or a second state, the first state refers to that the relatively curved arc surface of the water wing assembly is close to the bottom of the ship body, the relatively flat flat surface of the water wing assembly is away from the bottom of the ship body, and when the water wing assembly rotates around the first direction, the water flow velocity of the arc surface is faster than that of the flat surface, so as to provide upward lift for the ship body; the second state refers to that the relatively curved arc surface of the water wing assembly is away from the bottom of the ship body, the relatively flat flat surface of the water wing assembly is close to the bottom of the ship body, and when the water wing assembly rotates around the first direction, the water flow velocity of the arc surface is faster than that of the flat surface, so as to provide downward pull for the ship body; the water wing assembly and the transmission assembly are connected through an angle adjusting device, the angle adjusting device is used for adjusting the angle α of the water wing assembly and a second plane, and the range of the angle α is 0-360°; wherein the second plane refers to a plane perpendicular to the first direction.

2. Hydrofoil device according to claim 1, characterized in that The range of the angle α is 0-180°.

3. The water wing device according to claim 2, wherein the transmission assembly is a transmission shaft, one end of the transmission shaft is in transmission connection with the rotating mechanism, the other end of the transmission shaft is provided with a rotating shaft, the axis direction of the rotating shaft is perpendicular to the first direction, the rotating shaft is fixedly connected with the water wing assembly, and the angle adjusting device is used for driving the rotating shaft to rotate so as to adjust the angle α.

4. The water wing device according to claim 3, wherein the angle adjusting device comprises a servo motor, an output shaft of the servo motor is in transmission connection with the rotating shaft, so as to control the rotation of the rotating shaft.

5. The water wing device according to claim 3, wherein the transmission assembly comprises a transmission member, one end of the transmission member is in transmission connection with the rotating mechanism, the transmission member is further provided with a crank connecting rod mechanism, the crank connecting rod mechanism comprises a connecting rod and a crank, one end of the connecting rod is in sliding connection with the transmission member, the other end of the connecting rod is hinged with the crank, and the water wing assembly is fixedly connected with the crank.

6. The water wing device according to claim 5, wherein The crank connecting rod mechanism further comprises a slider and a slider position control device, the slider is arranged between the end of the connecting rod and the transmission member, the end of the connecting rod is hinged with the slider, so that the end of the connecting rod slides on the transmission member through the slider, and the slider position control device is in transmission connection with the slider for controlling the sliding position of the slider on the transmission member.

7. The hydrofoil device according to claim 6, characterized in that, The slider position control device adopts any one of motor drive control, piston drive control and hydraulic drive control, The motor drive control adopts a servo motor or a stepper motor, the output shaft of the servo motor or the stepper motor is in transmission connection 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, the piston rod is in transmission connection with the slider to drive and control the sliding position of the slider on the transmission member; The hydraulic drive control adopts a hydraulic cylinder to drive and control the sliding position of the slider on the transmission member.

8. The hydrofoil device according to any one of claims 1-7, characterized in that, The support frame is a streamline structure.

9. A vessel, characterized in that A ship body is included, the bottom of the ship body is provided with the hydrofoil device according to any one of claims 1-8.

Images