Adjustable hydrofoil for a hydrofoil boat

Abstract

The utility model relates to the technical field of marine hydrofoil, concretely is a kind of adjustable hydrofoil for hydrofoil ship, including main mast, the side end of main mast is symmetrically equipped with shaft sleeve, rotationally installs rotating plate at the end of shaft sleeve away from main mast, the end of rotating plate away from shaft sleeve is fixedly installed with connecting rod, the end of connecting rod away from rotating plate is rotationally installed with hydrofoil, the utility model is moved by water flow to promote adjusting plate, makes adjusting cable rope pull water foil rotation, effectively promotes power to speed up, by starting motor drive gear, makes lifting cable rope pull sliding plate, drives water foil to be parallel to main mast and be retracted, make hydrofoil ship avoid hydrofoil to touch bottom or impact underwater sundries when landing, cause hydrofoil damage, its technical key points are: propeller promotes ship body to advance, water flow enters adjusting box, and thrust makes adjusting plate move to the rear end of adjusting box, and drive hydrofoil to rotate with connecting rod as center point, when water flow thrust is greater, the distance of adjusting plate movement is farther, the angle of water foil rotation is greater.

Description

Technical Field

[0001] This utility model relates to the field of marine hydrofoils, specifically an adjustable hydrofoil for marine applications. Background Technology

[0002] Hydrofoils are essentially underwater wings. Because their cross-sectional shape is the same as or similar to that of an airfoil, they generate upward lift during high-speed movement in water. This lifts the hull or skid plate to some extent, reducing its underwater volume and thus decreasing overall drag during underwater navigation. As hydrofoils move in water, the waves they create generate lift drag; and the spray generated by the hydrofoil cutting through the water creates splash drag. To reduce this drag, hydrofoils often operate very close to the water surface. However, the closer the hydrofoil is to the surface, the less lift it generates. Therefore, the effects of changes in water level and current direction on the hydrofoil's lift and drag must be considered.

[0003] A search revealed prior art publication number CN214356551U, which discloses a hydrofoil structure including a mast, a main body, a front wing, and a rear wing; the front wing and the rear wing are respectively connected and fixed at the head and tail ends of the main body; a surfboard and the main body are respectively connected and fixed at the upper and lower ends of the mast; the front wing, the rear wing, and the mast all include a rigid outer shell and an internal structure disposed within the outer shell; the internal structure is mainly hollow, and the outer shell corresponding to the internal structure has a structural thickness of 0.6mm to 7mm, and the overall stability is improved by adding longitudinally arranged ailerons.

[0004] A search revealed that prior art publication number CN219361253U discloses a hydrofoil adjustment structure for a hydrofoil boat, including a working box. A support block is rotatably connected to one side of the inner cavity of the working box. An electric telescopic rod is fixedly connected to the top of the support block. A transmission frame is fixedly connected to the output end of the electric telescopic rod. A transmission plate is rotatably connected to the inner cavity of the transmission frame. A rotating tube is fixedly connected to one side of the transmission plate. The surface of the rotating tube is rotatably connected to the working box. One side of the rotating tube extends to the outside of the working box and is fixedly connected to two symmetrically arranged connecting rods. This utility model has the advantage of multi-angle adjustment. In actual use, the angle of the hydrofoil can be adjusted independently. Without adjusting the boat's swimming trajectory, the user can change the hydrofoil's movement trajectory by adjusting the angle of the hydrofoil according to the observed situation.

[0005] The existing hydrofoils mentioned above have insufficient lift under light wind and wave conditions, resulting in increased energy consumption and a significant decrease in speed. Furthermore, when hydrofoils approach the shore, the water depth is relatively shallow, and the unretracted hydrofoils may cause the hull to touch the bottom or collide with underwater debris. Therefore, based on the above research and in combination with the existing problems, an adjustable hydrofoil for hydrofoils is provided. Utility Model Content

[0006] The purpose of this invention is to provide an adjustable hydrofoil for marine applications to solve the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable hydrofoil for a boat, comprising a main mast, characterized in that: bushings are symmetrically installed on the side ends of the main mast, rotating plates are rotatably installed on the ends of the bushings away from the main mast, connecting rods are fixedly installed on the ends of the rotating plates away from the bushings, hydrofoils are rotatably installed on the ends of the connecting rods away from the rotating plates, adjusting rings are fixedly installed on the lower ends of the hydrofoils, and an adjusting box is fixedly installed on the lower end of the main mast, the adjusting box containing an adjusting plate for adjusting the angle of the hydrofoils according to the speed of the boat's movement.

[0008] Furthermore, a front filter screen is fixedly installed at the front end of the regulating box, and a rear filter screen is fixedly installed at the rear end of the regulating box. A sliding rod is slidably installed on the inner wall of the regulating box near the rear filter screen. A limit ring is fixedly installed at the end of the regulating plate away from the sliding rod. A rotating rod is rotatably installed on the inner wall of the regulating box. A rotating winding tube is rotatably installed on the outer wall of the center of the rotating rod. An regulating plate cable is wound around the outer wall of the rotating winding tube, and the other end of the regulating plate cable is wound and connected to the limit ring.

[0009] Furthermore, adjusting winding tubes are symmetrically installed at both ends of the rotating rod, and adjusting cables are wound around the outer wall of the adjusting winding tubes. An adjusting fixing ring is fixedly connected to the other end of the adjusting cable. Fixing blocks are symmetrically installed on the inner wall of the adjusting box, and springs are fixedly connected between the rotating winding tubes and the fixing blocks.

[0010] Furthermore, a housing is fixedly installed at the upper end of the main mast, a motor is fixedly installed at the upper end of the main mast, a drive gear is fixedly installed at the output end of the motor, a worm gear is rotatably installed on the inner wall of the housing, a driven gear is fixedly installed at the side end of the worm gear, and lifting winding tubes are symmetrically installed at both ends of the worm gear.

[0011] Furthermore, a lifting cable is wound and installed on the outer wall of the lifting winding tube, and a sliding plate is fixedly connected to the other end of the lifting cable.

[0012] Furthermore, symmetrical storage and fixing rings are installed on the upper end of the hydrofoil, and a storage cable is wound around the upper end of the storage and fixing ring. The other end of the storage cable is fixedly connected to the lower end of the sliding plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses water flow into the regulating box to push the regulating plate to move, which causes the regulating cable to pull the hydrofoil to rotate, so that the hydrofoil boat can increase the angle of attack and reduce the speed required for takeoff under small wind and waves, effectively improving power and speed.

[0015] 2. This utility model uses a starting motor to drive the drive gear to rotate. The drive gear drives the lifting winding tubes at both ends to rotate through a worm gear, which in turn causes the lifting cable to pull the sliding plate. The sliding plate, through the retracting cable, drives the hydrofoil to rotate until it is parallel to the main mast and retracts. This prevents the hydrofoil from touching the bottom or hitting underwater debris when the hydrofoil boat is docked, thus avoiding damage to the hydrofoil. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the regulating box of this utility model;

[0018] Figure 3 This is a schematic diagram of the hydrofoil structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the storage structure of this utility model;

[0020] Figure 5 This is a rear view schematic diagram of the overall structure of this utility model.

[0021] In the diagram: 1. Main mast; 2. Hydrofoil; 3. Thruster; 4. Adjustment box; 5. Rotating plate; 6. Bushing; 7. Retractable cable; 8. Retractable retaining ring; 9. Housing; 10. Front filter; 11. Adjusting winding tube; 12. Rotating winding tube; 13. Rotating rod; 14. Sliding rod; 15. Spring; 16. Adjustment plate; 17. Adjusting retaining ring; 18. Adjustment cable; 19. Motor; 20. Drive gear; 21. Driven gear; 22. Worm gear; 23. Lifting winding tube; 24. Sliding plate; 25. Lifting cable; 26. Fixing block; 27. Connecting rod; 28. Limiting ring; 29. ​​Rear filter; 30. Adjustment plate cable. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Please refer to Figures 1-5An adjustable hydrofoil for marine use includes a main mast 1. A housing 9 is fixedly mounted on the upper end of the main mast 1. Bushings 6 are symmetrically mounted on the side ends of the main mast 1. Rotating plates 5 for retracting the hydrofoil are rotatably mounted on the ends of the bushings 6 away from the main mast 1. Connecting rods 27 for adjusting the angle of attack of the hydrofoil are fixedly mounted on the ends of the rotating plates 5 away from the bushings 6. Hydrofoils 2 are rotatably mounted on the ends of the connecting rods 27 away from the rotating plates 5. Adjustment rings 17 are fixedly mounted on the lower ends of the hydrofoils 2. A thruster 3 is fixedly mounted on the rear end of the main mast 1. The thruster 3 is prior art and will not be described in detail here. Adjustment rings 17 are fixedly mounted on the lower ends of the main mast 1. The regulating box 4 contains an adjusting plate 16 that adjusts the angle of the hydrofoil 2 according to the speed of the ship. Specifically, as the speed of the ship changes, the resistance on the adjusting plate 16 changes, causing the moving distance of the adjusting plate 16 to change. This allows the adjusting plate 16 to control the rotation angle of the hydrofoil 2 to be proportional to the speed of the ship. Specifically, when the propeller 3 propels the ship forward, water flows into the regulating box 4, and the thrust causes the adjusting plate 16 to move towards the rear end of the regulating box 4, driving the hydrofoil 2 to rotate around the connecting rod 27. The greater the thrust of the water flow, the farther the adjusting plate 16 moves, and the greater the rotation angle of the hydrofoil 2.

[0024] Please see Figure 1 , Figure 2 The regulating box 4 has filter screens fixedly installed at both its front and rear ends, namely a front filter screen 10 and a rear filter screen 29. During the ship's transportation, the front filter screen 10 and the rear filter screen 29 push away debris in the water to prevent debris from entering the regulating box 4. The inner wall of the regulating box 4 is symmetrically provided with slide rails. A sliding rod 14 is slidably installed on the inner wall of the regulating box 4 near the rear filter screen 29, and the sliding rod 14 is slidably set in the slide rail on the inner wall of the regulating box 4. The regulating plate 16 is fixedly sleeved on the outer wall of the sliding rod 14. A limit ring 28 is fixedly installed on the end of the regulating plate 16 away from the sliding rod 14. A rotating rod 13 is rotatably installed on the inner wall of the regulating box 4. A rotating winding tube 12 is rotatably mounted on the outer wall of the center. An adjusting plate cable 30 is wound around the outer wall of the rotating winding tube 12, and the other end of the adjusting plate cable 30 is wound and connected to a limit ring 28. Specifically, the propeller 3 propels the hull forward, causing water to flow from the front filter screen 10 into the regulating box 4. The thrust generated by the water flow causes the adjusting plate 16 to move along the slide rail on the inner wall of the regulating box 4 with the sliding rod 14 and the limit ring 28 until it stops at one end of the rear filter screen 29. The limit ring 28 pulls the adjusting plate cable 30, causing the rotating winding tube 12 to rotate, which extends the adjusting plate cable 30 wound on its outer wall and causes the rotating winding tube 12 to drive the rotating rod 13 to rotate.

[0025] Please see Figures 1-3The two ends of the rotating rod 13 are symmetrically equipped with adjusting winding tubes 11. Adjusting cables 18 are wound around the outer wall of the adjusting winding tubes 11, and the other end of the adjusting cables 18 is fixedly connected to adjusting fixing rings 17. Fixing blocks 26 are symmetrically installed on the inner wall of the adjusting box 4. Springs 15 are fixedly connected between the rotating winding tubes 12 and the fixing blocks 26. Specifically, when the rotating winding tubes 12 rotate, the springs 15 rotate and store force. At the same time, the rotating winding tubes 12 drive the 11s at both ends of the rotating rod 13 to rotate. The 11s wind the 18s around the outer wall, shortening the length of the adjusting cables 18. The adjusting cables 18 pull the adjusting fixing rings 17, causing them to move downwards and drive the hydrofoil 2 to rotate around the connecting rod 27 as the center point, completing the angle of attack adjustment of the hydrofoil 2. When the thruster 3 stops working... During operation, the hydrofoil begins to decelerate and glide. The speed of the water flow entering the 4 from the front filter 10 decreases. When the elastic force of the spring 15 is greater than the thrust of the water flow, the spring 15 rotates in the opposite direction and extends, causing the rotating winding tube 12 to rotate in the opposite direction. This causes the regulating plate cable 30 to wrap around the outer wall of the rotating winding tube 12. The regulating plate cable 30 pulls the limiting ring 28 and the regulating plate 16 to move along the slide rail on the inner wall of the regulating box 4 towards the end closer to the rotating winding tube 12, which has a certain deceleration effect. At the same time, the rotating winding tube 12 causes the regulating winding tube 11 to rotate in the opposite direction, causing the regulating cable 18 wrapped around the outer wall of the regulating winding tube 11 to extend. The water flow pushes the hydrofoil 2 to rotate in the opposite direction with the connecting rod 27 as the center point, so that the hydrofoil 2 remains parallel to the water surface and allows the hydrofoil to glide smoothly on the water surface.

[0026] Please see Figure 4 A motor 19 is fixedly installed at the upper end of the main mast 1. The motor 19 is existing technology and will not be described in detail here. A drive gear 20 is fixedly installed at the output end of the motor 19. A worm gear 22 is rotatably installed on the inner wall of the housing 9. A driven gear 21 is fixedly installed at the side end of the worm gear 22, and the driven gear 21 is meshed with the drive gear 20. Lifting winding tubes 23 are symmetrically installed at both ends of the worm gear 22. When the motor 19 starts, it drives the drive gear 20 to rotate. The drive gear 20 drives the driven gear 21 to rotate in the opposite direction. The driven gear 21 drives the worm gear 22 to rotate. The worm gear 22 drives the lifting winding tubes 23 at both ends to rotate.

[0027] Please see Figure 1 , Figure 4 A lifting cable 25 is wound and installed on the outer wall of the lifting winding tube 23. The other end of the lifting cable 25 is fixedly connected to a sliding plate 24, and the sliding plate 24 is slidably set on the outer wall of the main mast 1. When the lifting winding tube 23 rotates, it winds the lifting cable 25 on the outer wall, shortens the length of the lifting cable 25, and pulls the sliding plate 24 to move upward.

[0028] Please see Figure 1 , Figure 5The upper end of the hydrofoil 2 is symmetrically equipped with a storage fixing ring 8. The upper end of the storage fixing ring 8 is wound with a storage cable 7. The other end of the storage cable 7 is fixedly connected to the lower end of the sliding plate 24. When the sliding plate 24 moves upward, it pulls the storage cable 7 to move upward. The storage cable 7 drives the hydrofoil 2 and the rotating plate 5 to rotate around the bushing 6 as the center point and retract parallel to the main mast 1 through the storage fixing ring 8. At the same time, the hydrofoil 2 pulls the adjusting cable 18 wound on the outer wall of the adjusting winding tube 11 through the adjusting fixing ring 17, so that the length of the adjusting cable 18 is extended and the adjusting winding tube 11 is rotated. The adjusting winding tube 11 drives the rotating rod 13 to rotate. The rotating rod 13 drives the rotating winding tube 12 to rotate, so that the adjusting plate cable 30 wound on its outer wall is shortened. This pulls the adjusting plate 16 and the sliding rod 14 to move along the slide rail on the inner wall of the adjusting box 4 towards the end closer to the rotating winding tube 12, and also has a certain deceleration effect.

[0029] Working principle: The propeller 3 propels the hull, and the water flows through the front filter 10 into the regulating box 4, generating thrust that moves the regulating plate 16, sliding rod 14, and limiting ring 28 along the slide rail to stop at the rear filter 29. The limiting ring 28 pulls the regulating plate cable 30, rotating the winding tube 12, extending the regulating plate cable 30, and storing the force to rotate the spring 15. The rotating rod 13 drives the regulating winding tube 11 to rotate, shortening the regulating cable 18, pulling the regulating fixing ring 17 and the hydrofoil 2 to rotate, completing the angle of attack adjustment. The increased water thrust allows the regulating plate to move a greater distance and the hydrofoil to rotate at a larger angle.

[0030] When the thruster 3 decelerates or stops working, the hydrofoil begins to decelerate and glide. The speed of the water flowing from the front filter 10 into the regulating box 4 decreases, the thrust on the regulating plate 16 decreases, and the torque applied to the spring 15 by the rotation of the rotating winding tube 12 is greater than the restoring torque generated inside the spring 15, causing the spring 15 to twist. When the torsional force of the spring 15 is greater than the torque applied to the spring 15 by the rotation of the rotating winding tube 12, the spring 15 restores the torque and releases the torque, rotating in the opposite direction and driving the rotating winding tube 12 to rotate in the opposite direction, causing the regulating plate cable 30 to wrap around the outer wall of the rotating winding tube 12. When spring 15 fully returns to its original untorted state, the internal stress disappears, the restoring torque becomes zero, spring 15 stops moving, and the adjusting plate cable 30 pulls the limiting ring 28 and the adjusting plate 16 along the slide rail on the inner wall of the adjusting box 4 towards the end closer to the rotating winding tube 12, which has a certain deceleration effect. At the same time, the rotating winding tube 12 drives the adjusting winding tube 11 to rotate in the opposite direction, causing the adjusting cable 18 wound on the outer wall of the adjusting winding tube 11 to extend. The water flow pushes the hydrofoil 2 to rotate in the opposite direction with the connecting rod 27 as the center point, so that the hydrofoil 2 remains parallel to the water surface and the hydrofoil boat can glide smoothly on the water surface.

[0031] When the hydrofoil is ready to dock, the motor 19 is started, driving the drive gear 20 to rotate. The drive gear 20 drives the driven gear 21 to rotate in the opposite direction. The driven gear 21 drives the worm gear 22 to rotate, which in turn drives the lifting winding tubes 23 at both ends to rotate. When the lifting winding tubes 23 rotate, they wind the lifting cable 25 around the outer wall, shortening the length of the lifting cable 25 and pulling the sliding plate 24 upward. When the sliding plate 24 moves upward, it pulls the retractable cable 7 upward. The retractable cable 7, through the retractable fixing ring 8, drives the hydrofoil 2 and the rotating plate 5 to rotate around the bushing 6 as the center point until they are aligned with the main mast 1. When the hydrofoil is retracted in parallel, the adjusting cable 18 wound around the outer wall of the adjusting winding tube 11 is pulled by the adjusting fixing ring 17, which lengthens the adjusting cable 18 and drives the adjusting winding tube 11 to rotate. The adjusting winding tube 11 drives the rotating rod 13 to rotate, and the rotating rod 13 drives the rotating winding tube 12 to rotate, which shortens the adjusting plate cable 30 wound around its outer wall. This pulls the adjusting plate 16 and the sliding rod 14 to move along the slide rail on the inner wall of the adjusting box 4 towards the end closer to the rotating winding tube 12, thus preventing the hydrofoil 2 from colliding with rocks and other debris on the shore and causing damage to the hydrofoil 2, and also achieving a certain deceleration effect.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A marine adjustable hydrofoil, comprising a main mast (1), characterized in that: The main mast (1) is symmetrically equipped with bushings (6) on its side ends. A rotating plate (5) is rotatably installed on the end of the bushing (6) away from the main mast (1). A connecting rod (27) is fixedly installed on the end of the rotating plate (5) away from the bushing (6). A hydrofoil (2) is rotatably installed on the end of the connecting rod (27) away from the rotating plate (5). An adjusting ring (17) is fixedly installed on the lower end of the hydrofoil (2). An adjusting box (4) is fixedly installed on the lower end of the main mast (1). An adjusting plate (16) is provided inside the adjusting box (4) to adjust the angle of the hydrofoil (2) according to the speed of the ship's movement. A front filter screen (10) is fixedly installed at the front end of the regulating box (4), and a rear filter screen (29) is fixedly installed at the rear end of the regulating box (4). A sliding rod (14) is slidably installed on the inner wall of the regulating box (4) near the rear filter screen (29). A limit ring (28) is fixedly installed on the end of the regulating plate (16) away from the sliding rod (14). A rotating rod (13) is rotatably installed on the inner wall of the regulating box (4). A rotating winding tube (12) is rotatably installed on the outer wall of the center of the rotating rod (13). An regulating plate cable (30) is wound on the outer wall of the rotating winding tube (12), and the other end of the regulating plate cable (30) is wound and connected to the limit ring (28).

2. The adjustable hydrofoil for marine use according to claim 1, characterized in that: The two ends of the rotating rod (13) are symmetrically equipped with adjusting winding tubes (11). An adjusting cable (18) is wound around the outer wall of the adjusting winding tube (11), and the other end of the adjusting cable (18) is fixedly connected to an adjusting fixing ring (17). A fixing block (26) is symmetrically installed on the inner wall of the adjusting box (4). A spring (15) is fixedly connected between the rotating winding tube (12) and the fixing block (26). A housing (9) is fixedly installed at the upper end of the main mast (1). A motor (19) is fixedly installed at the upper end of the main mast (1). A drive gear (20) is fixedly installed at the output end of the motor (19). A worm gear (22) is rotatably installed on the inner wall of the housing (9). A driven gear (21) is fixedly installed at the side end of the worm gear (22). Lifting winding tubes (23) are symmetrically installed at both ends of the worm gear (22).

3. The adjustable hydrofoil for marine use according to claim 2, characterized in that: A lifting cable (25) is wound and installed on the outer wall of the lifting winding tube (23). The other end of the lifting cable (25) is fixedly connected to a sliding plate (24). A storage fixing ring (8) is symmetrically installed on the upper end of the hydrofoil (2). A storage cable (7) is wound and connected to the upper end of the storage fixing ring (8). The other end of the storage cable (7) is fixedly connected to the lower end of the sliding plate (24).

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