Hidden turnover hydrofoil

Abstract

A hydrofoil is arranged at the bottom of a sheet body of a catamaran, a cavity is formed in the sheet body, a hydrofoil head is arranged at an opening of the cavity, a steering shaft is arranged in the hydrofoil head and arranged in the longitudinal direction of the sheet body, and the two ends of the steering shaft extend out of the hydrofoil head to be connected with the cavity. A connecting end is arranged at the end, opposite to the opening side of the cavity, of the hydrofoil, and the connecting end is connected with the lower end of the hydrofoil head; a groove is formed in the bottom and / or the side face of the sheet body, the groove is formed in the transverse direction of the sheet body, and the hydrofoil head is connected with a hydraulic driving system located in the cavity. According to the reversible hydrofoil, the structure of a catamaran can be effectively utilized, the space advantage of the catamaran can be exerted, and the rotatable hydrofoil can be located at different positions when meeting different navigation conditions so as to adapt to different sea conditions.

Description

Technical Field

[0001] The invention relates to the technical field of boat hydrofoils, and in particular to a hidden flip hydrofoil. Background Art

[0002] A yacht with hydrofoils can lift up the hull through the hydrofoils during sailing, greatly reducing the resistance of the yacht and improving the turbulence of the yacht during sailing. However, most of the hydrofoils in the prior art are fixed, and especially when the hydrofoils are installed on a catamaran, the structure and space of the hull itself are not well utilized to retract and deploy the hydrofoils, so the advantages of the structure and space of the catamaran itself cannot be effectively utilized to retract and hide the hydrofoils, so that the yacht with hydrofoils will affect the draft of the yacht when encountering different environments and different sea conditions, resulting in poor adaptability. Summary of the invention

[0003] The object of the present invention is to provide a hydrofoil which can be turned over so as to be hidden on a catamaran.

[0004] To this end, the present invention adopts the following technical solutions:

[0005] A hidden flip hydrofoil, wherein the hydrofoil is arranged at the bottom of the sheet body of a catamaran, a cavity is opened inside the sheet body, a hydrofoil head is arranged at the opening of the cavity, a steering shaft is arranged on the hydrofoil head, the steering shaft is arranged along the longitudinal direction of the sheet body, and the end portion extends to the outside of the hydrofoil head and is connected to the cavity, a connecting end is arranged at the end of the hydrofoil opposite to the opening side of the cavity, and the connecting end is connected to the lower end of the hydrofoil head; a groove matching the hydrofoil is arranged in the bottom of the sheet body and / or its side surface, the groove is opened in the lateral direction of the sheet body, the hydrofoil head is connected to a hydraulic drive system located in the cavity, and can make the hydrofoil be stored in the groove and close to the sheet body when it is flipped upward to the extreme position.

[0006] Further: the hydraulic drive system includes a hydraulic pump arranged on or inside the sheet body and a telescopic arm arranged in the cavity, the hydraulic pump and the telescopic arm are connected through a hydraulic joint, a fixing part connected to the fixed end of the telescopic arm is connected to the cavity wall of the cavity, and the telescopic end of the telescopic arm is hingedly connected to the hydrofoil head.

[0007] Furthermore: a fixing plate is provided in the cavity wall of the cavity, and the fixing plate is arranged on both sides of the hydrofoil head along the longitudinal direction of the sheet body, and the end of the steering shaft is rotatably connected to the fixing plate.

[0008] Furthermore: an intermediate piece is arranged between the fixing plate and the hydrofoil head, the bottom of the intermediate piece is connected to the cavity wall of the cavity, and a hole is opened inside the intermediate piece for the steering shaft to pass through.

[0009] Further: a supporting plate connected to the steering shaft is arranged on the side wall of the fixing plate,

[0010] Furthermore: the material of the hydrofoil is carbon fiber.

[0011] Furthermore: the projection of the hydrofoil in the longitudinal direction is V-shaped, and the angle between the protruding sections on both sides thereof is consistent with the outer shape angle formed by the sheet body.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The flippable hydrofoil of the present invention can effectively utilize the structure of the catamaran itself and give play to its spatial advantages. When encountering different sailing conditions, the hydrofoil can be placed in different positions to adapt to different sea conditions. When the hydrofoil is flipped upward to the extreme position, the hydrofoil can be hidden in the hull when folded, so that the yacht can sail to shallower waters. The hydrofoil in the hidden state can reduce the resistance of the yacht during sailing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the present invention in the sheet cavity;

[0016] Figure 3 It is a schematic diagram of the structure of the connection between the hydrofoil and the hydrofoil head of the present invention;

[0017] Figure 4 It is a schematic diagram of the hydrofoil folding structure on the double hull of the present invention.

[0018] The markings in the accompanying drawings are: hydrofoil 1, hydrofoil head 2, steering shaft 21, hydraulic drive system 3, hydraulic pump 31, telescopic arm 32, fixing part 33, fixing plate 4, sheet body 5, cavity 6. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0020] like Figure 1-4As shown, a hidden flip hydrofoil, a hydrofoil 1 is arranged at the bottom of a sheet 5 of a catamaran, a cavity 6 is opened inside the sheet 5, a hydrofoil head 2 is arranged at the opening of the cavity 6, a steering shaft 21 is fixedly arranged on the side end surface of the hydrofoil head 2, the steering shaft 21 is arranged on both sides of the hydrofoil head 2 along the longitudinal direction of the sheet 5, and the end of the steering shaft 21 away from the side of the hydrofoil head 2 extends to the outside of the hydrofoil head 2 and is connected to the cavity 6, and a connecting end is arranged at the end of the hydrofoil 1 opposite to the opening side of the cavity 6, and the connecting end is connected to the lower end of the hydrofoil head 2; Grooves are provided at the bottom and / or the sides of the sheet 5. When grooves matching the hydrofoil 1 are provided at the bottom and sides of the sheet 5, the grooves are provided in the lateral direction of the sheet 5. The hydrofoil head 2 is connected to a hydraulic drive system 3 located in the cavity 6, and can make the hydrofoil 1 flip upward to the extreme position. The hydrofoil 1 turns toward the center of the catamaran and is stored in the groove and close to the sheet 5. The hydrofoil 1 can be completely hidden on the sheet 5 after being stored, thereby further reducing the disturbance of the catamaran during navigation.

[0021] In this embodiment, the steering shaft 21 is arranged in the middle part of the hydrofoil head 2, and the upper end parts of the two side ends of the hydrofoil head 2 are connected to the telescopic arm 32, and the lower end part is connected to the hydrofoil 1. The hydrofoil head 2 provides a steering reference for the steering of the hydrofoil 1 by using the steering shaft 21 as the rotation axis, thereby performing upward or downward steering under the driving action of the hydraulic drive system 3.

[0022] like Figure 1-2 As shown, specifically, the hydraulic drive system 3 includes a hydraulic pump 31 disposed in the sheet body 5 and a telescopic arm 32 disposed in the cavity 6. The hydraulic pump 31 is connected to the telescopic arm 32 through a hydraulic joint. A fixing piece 33 connected to the fixed end of the telescopic arm 32 is connected to the cavity wall of the cavity 6. The telescopic end of the telescopic arm 32 is hingedly connected to the hydrofoil head 2. The hydraulic drive system 3 can realize the free rotation of the hydrofoil 1 when flipping the hydrofoil 1 to any angle, so as to adjust different angles to meet the needs of different environments and water conditions of different waters when the yacht is sailing.

[0023] Specifically, a fixing plate 4 is provided in the cavity wall of the cavity 6 , and the fixing plate 4 is arranged on both sides of the hydrofoil head 2 along the longitudinal direction of the sheet body 5 , and the end of the steering shaft 21 is rotatably connected to the fixing plate 4 .

[0024] A supporting plate 8 connected to the steering shaft 21 is disposed on the side wall of the fixing plate 4 , and a hole matching with the steering shaft 21 is opened in the supporting plate 8 .

[0025] Among them, an intermediate piece 7 is arranged between the support plate 8 and the hydrofoil head 2, the bottom of the intermediate piece 7 is connected to the cavity wall of the cavity 6, and a hole is opened inside for the steering shaft 21 to pass through, thereby enhancing the supporting effect of the hydrofoil 1 on the steering shaft 21 when turning.

[0026] like Figure 1-4 As shown, in this embodiment, the projection of the hydrofoil 1 in the longitudinal direction is V-shaped, and the angle between the protruding sections on both sides is consistent with the outer angle formed by the sheet 5, so that the hydrofoil 1 can be fully and tightly fitted with the sheet 5. Among them, the middle part of the hydrofoil 1 connecting the protruding sections on both sides is preferably projected in an arc shape in the longitudinal direction.

[0027] When the hydraulic drive system 3 pushes outward, the hydrofoil head 2 and the hydrofoil 1 are driven to flip downward to the extreme position, the flip angle is 0°, and the hydrofoils 1 on both sides are horizontal and flush with each other, as shown in FIG. Figure 1 When the hydraulic drive system 3 is folded, it drives the hydrofoil head 3 and the hydrofoil 1 to flip upward to the extreme position, the flipping angle can reach 85°, and the hydrofoils 1 on both sides are close to the outer surface of the sheet body 5.

[0028] In this embodiment, the hydrofoil 1 is made of carbon fiber, which is strong and light. Compared with the hydrofoil made of aluminum alloy, it is more resistant to high temperature, radiation, and chemicals, and has higher strength. At the same time, the hydrofoil 1 made of carbon fiber can better prevent the attachment of marine microorganisms, which attach to the surface of marine facilities, and can avoid increasing the roughness and weight of the hull, thereby increasing the sailing resistance and fuel consumption.

[0029] The above embodiment is only a preferred technical solution of the present invention. Those skilled in the art should understand that the technical solutions or parameters in the embodiments can be modified or replaced without departing from the principle and essence of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. A hidden flip hydrofoil, characterized in that: A hydrofoil (1) is arranged at the bottom of a sheet body (5) of a catamaran, a cavity (6) is provided inside the sheet body (5), a hydrofoil head (2) is arranged at the opening of the cavity (6), a steering shaft (21) is arranged on the hydrofoil head (2), the steering shaft (21) is arranged along the longitudinal direction of the sheet body (5), and the end of the steering shaft (21) extends to the outside of the hydrofoil head (2) and is connected to the cavity (6), and a connecting end is arranged at the end of the hydrofoil (1) opposite to the opening side of the cavity (6), and the connecting end is connected to the lower end of the hydrofoil head (2); A groove is provided in the bottom and / or side of the sheet body (5), and the groove is opened in the lateral direction of the sheet body (5). The hydrofoil head (2) is connected to a hydraulic drive system (3) located in the cavity (6), and can enable the hydrofoil (1) to be stored in the groove and closely attached to the sheet body (5) when the hydrofoil (1) is flipped upward to an extreme position.

2. The hidden flip hydrofoil according to claim 1, characterized in that: The hydraulic drive system (3) comprises a hydraulic pump (31) arranged on or inside the sheet body (5) and a telescopic arm (32) arranged in the cavity (6); the hydraulic pump (31) and the telescopic arm (32) are connected via a hydraulic joint; a fixing member (33) connected to a fixed end of the telescopic arm (32) is connected to the cavity wall of the cavity (6); and the telescopic end of the telescopic arm (32) is hingedly connected to the hydrofoil head (2).

3. The hidden flip hydrofoil according to claim 1, characterized in that: A fixing plate (4) is provided in the cavity wall of the cavity (6), and the fixing plate (4) is arranged on both sides of the hydrofoil head (2) along the longitudinal direction of the sheet body (5), and the end of the steering shaft (21) is rotatably connected to the fixing plate (4).

4. The hidden flip hydrofoil according to claim 3, characterized in that: An intermediate piece (7) is provided between the fixing plate (4) and the hydrofoil head (2); the bottom of the intermediate piece (7) is connected to the cavity wall of the cavity (6), and a hole is provided inside the intermediate piece for the steering shaft (21) to pass through.

5. The hidden flip hydrofoil according to claim 3, characterized in that: A supporting plate (8) connected to the steering shaft (21) is arranged on the side wall of the fixing plate (4).

6. The hidden flip hydrofoil according to claim 1, characterized in that: The material of the hydrofoil (1) is carbon fiber.

7. The hidden flip hydrofoil according to claim 1, characterized in that: The projection of the hydrofoil (1) in the longitudinal direction is V-shaped, and the angle between the protruding sections on both sides thereof is consistent with the outer shape angle formed by the sheet body (5).

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