Energy-saving twist rudder

Abstract

The utility model discloses an energy -conserving twist rudder belongs to the field of rudder, including the rudder blade, the outer end of rudder blade is connected with the self -adaptation flow guide subassembly, the outside of self -adaptation flow guide subassembly is provided with the anti -winding subassembly, the self -adaptation flow guide subassembly includes the flow guide fin body, connecting shaft and mounting seat, the mounting seat fixed mounting is in the leading edge of rudder blade, the connecting shaft rotation is connected in the front end of mounting seat, the flow guide fin body fixed mounting is in the front end of connecting shaft, its technical scheme main point is, through flow guide fin body to the water flow carries out the pre -flow guide, has improved the inflow condition of rudder blade, has reduced the vortex and the pressure difference resistance to reduce the total sailing resistance of ship, utilize a by torsion spring pre -tension, the flow guide fin of adaptive deflection, according to different speed and the water flow impact force under the rudder angle, automatically adjust its angle to provide optimal inflow condition for the main rudder blade of rear always, reach the purpose of reducing the resistance, improving the efficiency, reducing the vibration, energy -conserving.

Description

Technical Field

[0001] This utility model relates to the field of ship rudders, and in particular to an energy-saving twisting rudder. Background Technology

[0002] A rudder is a device installed at the stern of a ship to control its direction of travel; it is equivalent to a steering wheel. In the existing technology, the angle of attack of the fixed guide fin of the energy-saving twist rudder is fixed, and its optimal working efficiency is only for a specific speed and load condition. When the ship's speed, load or propeller operating conditions change, the fixed guide fin may not be at the optimal working angle, and may even generate resistance in some cases, resulting in unstable energy-saving effect. Therefore, we propose an energy-saving twist rudder. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide an energy-saving twisted rudder. By pre-guiding the water flow through a guide fin, the inflow conditions of the rudder blade are improved, reducing eddy currents and pressure drag, thereby reducing the overall sailing resistance of the ship. A guide fin, pre-tensioned by a torsion spring and capable of adaptive deflection, automatically adjusts its angle according to the water flow impact force at different speeds and rudder angles, thus always providing optimal inflow conditions for the main rudder blade behind it, achieving the goals of reducing resistance, improving efficiency, reducing vibration, and saving energy.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: An energy-saving twisted rudder includes a rudder blade, the outer end of which is connected to an adaptive flow guide component, and an anti-winding component is provided on the outside of the adaptive flow guide component. The adaptive flow guiding assembly includes a flow guiding fin, a connecting shaft, and a mounting base. The mounting base is fixedly mounted on the leading edge of the rudder blade. The connecting shaft is rotatably connected to the front end of the mounting base. The flow guiding fin is fixedly mounted on the front end of the connecting shaft. The adaptive flow guiding assembly also includes an angle adjustment mechanism, which includes a torsion spring and an angle limiting block. The torsion spring is sleeved on the connecting shaft. One end of the torsion spring is fixedly connected to the mounting base, and the other end of the torsion spring is fixedly connected to the connecting shaft. The angle limiting block is fixedly connected to the front end of the mounting base.

[0005] By pre-guiding the water flow through the guide fin, the inflow conditions of the rudder blade are improved, reducing eddy currents and pressure drag, thereby reducing the overall sailing resistance of the ship. A guide fin that is pre-tensioned by a torsion spring and can adaptively deflect can automatically adjust its angle according to the water flow impact force at different speeds and rudder angles, thus always providing the optimal inflow conditions for the main rudder blade behind it, achieving the purpose of reducing drag, improving efficiency, reducing vibration, and saving energy. The guiding effect generated by the guide fin is equivalent to sorting the water flow of the main rudder blade, which enables the rudder blade to generate lift more efficiently at different speeds and rudder angles, improving the rudder's response speed and stability. Its adaptive characteristics enable it to maintain good rudder performance at both low and high speeds. The angle adjustment mechanism allows the device to operate automatically without external power or control system, relying entirely on fluid dynamics and mechanical structure. It has a simple structure, high reliability, and requires no maintenance. The torsion spring and angle limit block ensure that the system is both flexible and safe, and will not fail due to excessive deflection.

[0006] Furthermore, the angle adjustment mechanism enables the guide fin to have an initial pre-tightening angle under the impact of water flow, and can automatically deflect within a certain angle range as the water flow velocity changes.

[0007] Furthermore, the torsion spring provides an initial preload to the guide fin, maintaining the guide fin at its initial angle of attack, and the angle limiting block is used to limit the maximum and minimum deflection angles of the guide fin.

[0008] Furthermore, the initial angle of attack is 3° to 8°, and the deflection angle is limited to ±5°.

[0009] Furthermore, the guide fin is a hollow structure, and the interior of the guide fin is filled with foam.

[0010] Furthermore, the anti-winding component includes a sealing cover, which is fixedly connected to the front end of the mounting base, and the sealing cover has a streamlined structure.

[0011] Furthermore, the connecting shaft passes through the sealing cover and is rotatably disposed with the sealing cover, and the guide fin is rotatably disposed at the front end of the sealing cover.

[0012] Furthermore, a rudder stick is fixedly connected to the upper end of the rudder blade.

[0013] In summary, this utility model has the following beneficial effects: 1. By pre-guiding the water flow through the guide fin, the inflow conditions of the rudder blade are improved, reducing eddy currents and pressure drag, thereby reducing the overall navigation resistance of the ship. A guide fin that is pre-tensioned by a torsion spring and can adaptively deflect can automatically adjust its angle according to the water flow impact force at different speeds and rudder angles, so as to always provide the optimal inflow conditions for the main rudder blade behind it, thereby achieving the purpose of reducing resistance, improving efficiency, reducing vibration, and saving energy. 2. The guiding effect generated by the guide fin is equivalent to sorting the water flow of the main rudder blade, so that the rudder blade can generate lift more efficiently at different speeds and rudder angles, improving the rudder's response speed and stability. Its adaptive characteristics enable it to maintain good rudder performance at both low and high speeds. 3. The angle adjustment mechanism enables the device to operate automatically without external power and control system, relying entirely on fluid mechanics and mechanical structure. It has a simple structure, high reliability, and is maintenance-free. The torsion spring and angle limit block ensure that the system is both flexible and safe, and will not fail due to excessive deflection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure in this embodiment; Figure 2 This is a rear-view structural schematic diagram in this embodiment; Figure 3 This is a schematic diagram of the adaptive flow guiding component and the anti-entanglement component in this embodiment; Figure 4 This is a schematic diagram of the angle adjustment mechanism in this embodiment; Figure 5 This is a structural diagram showing the separation of the adaptive flow guiding component and the anti-entanglement component in this embodiment.

[0015] In the diagram, 1 is the rudder blade; 2 is the adaptive flow guide assembly; 201 is the flow guide fin; 202 is the connecting shaft; 203 is the mounting base; 204 is the angle adjustment mechanism; 2041 is the torsion spring; 2042 is the angle limit block; 3 is the anti-winding assembly; 301 is the sealing cover; and 4 is the rudder stock. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0018] Reference Figures 1-5 As shown, an energy-saving twisted rudder is provided in a preferred embodiment of the present invention, including a rudder blade 1, an adaptive flow guide component 2 connected to the outer end of the rudder blade 1, and an anti-winding component 3 provided on the outside of the adaptive flow guide component 2. The adaptive flow guiding assembly 2 includes a flow guiding fin 201, a connecting shaft 202, and a mounting base 203. The mounting base 203 is fixedly mounted on the leading edge of the rudder blade 1. The connecting shaft 202 is rotatably connected to the front end of the mounting base 203. The flow guiding fin 201 is fixedly mounted on the front end of the connecting shaft 202. The adaptive flow guiding assembly 2 also includes an angle adjustment mechanism 204. The angle adjustment mechanism 204 includes a torsion spring 2041 and an angle limiting block 2042. The torsion spring 2041 is sleeved on the connecting shaft 202. One end of the torsion spring 2041 is fixedly connected to the mounting base 203, and the other end of the torsion spring 2041 is fixedly connected to the connecting shaft 202. The angle limiting block 2042 is fixedly connected to the front end of the mounting base 203.

[0019] The guide fin 201 pre-guides the water flow, improving the inflow conditions of the rudder blade 1 and reducing eddy currents and pressure drag, thereby reducing the ship's total sailing resistance. A guide fin, pre-tensioned by a torsion spring 2041 and capable of adaptive deflection, automatically adjusts its angle according to the water flow impact force at different speeds and rudder angles, thus always providing optimal inflow conditions for the main rudder blade 1 behind it, achieving the goals of reducing resistance, improving efficiency, reducing vibration, and saving energy. The guiding effect generated by the guide fin 201 is equivalent to sorting the water flow of the main rudder blade 1, so that the rudder blade 1 can generate lift more efficiently at different speeds and rudder angles, improving the rudder's response speed and stability. Its adaptive characteristics enable it to maintain good rudder performance at both low and high speeds. The angle adjustment mechanism 204 enables the device to operate automatically without external power and control system, relying entirely on fluid mechanics and mechanical structure. It has a simple structure, high reliability, and is maintenance-free. The torsion spring 2041 and the angle limit block 2042 ensure that the system is both flexible and safe and will not fail due to excessive deflection. By improving the flow field, the low-pressure area on the back surface of rudder blade 1 was reduced, effectively delaying or eliminating the generation of cavitation bubbles, thereby reducing cavitation damage, lowering vibration and noise, and improving comfort and component life.

[0020] Reference Figures 1-5 As shown, the angle adjustment mechanism 204 enables the guide fin 201 to have an initial pre-tightening angle under the impact of water flow, and can automatically deflect within a certain angle range as the water flow speed changes.

[0021] Reference Figures 1-5 As shown, the torsion spring 2041 provides an initial preload to the guide fin 201, keeping the guide fin 201 at its initial angle of attack, and the angle limiting block 2042 is used to limit the maximum and minimum deflection angle of the guide fin 201.

[0022] Reference Figures 1-5 As shown, the initial angle of attack is 3° to 8°, and the deflection angle is limited to ±5°.

[0023] Reference Figures 1-5 As shown, the guide fin 201 is a hollow structure, and the interior of the guide fin 201 is filled with foam.

[0024] The guide fin 201 is hollow and filled with foam, which reduces weight and lowers the load on the connecting shaft 202 and the mounting base 203. On the other hand, it provides additional buoyancy, which can partially offset the weight of the rudder system and reduce the burden on the rudder bearing.

[0025] Reference Figures 1-5 As shown, the anti-winding component 3 includes a sealing cover 301, which is fixedly connected to the front end of the mounting base 203. The sealing cover 301 has a streamlined structure.

[0026] The streamlined sealing cover 301 encloses the rotating parts, forming a smooth surface that prevents ropes, fishing nets, etc. from getting caught, greatly reducing the risk of entanglement. It is especially suitable for small and medium-sized vessels working in complex environments.

[0027] Reference Figures 1-5 As shown, the connecting shaft 202 passes through the sealing cover 301 and is rotatably mounted with the sealing cover 301, and the guide fin 201 is rotatably mounted at the front end of the sealing cover 301.

[0028] Reference Figures 1-5 As shown, the upper end of the rudder blade 1 is fixedly connected to the rudder stick 4.

[0029] Specific implementation process: When the ship is sailing straight, the torsion spring 2041 provides the guide fin 201 with an initial angle of attack of 3° to 8°. At this time, the water flow impacts the guide fin 201 at this angle of attack, which will generate a small lift force on the guide fin 201. This lift force attempts to push the guide fin 201 to rotate around the connecting shaft 202, but due to the preload of the torsion spring 2041, the guide fin 201 is firmly held in the initial position. When the ship is sailing at low speed or the rudder blade 1 rotates at a small angle, the impact force of the water flow on the guide fin 201 is not enough to completely overcome the preload of the torsion spring 2041. At this time, the guide fin 201 basically maintains its initial angle of attack, like a fixed guide fin, to guide the water flow for the main rudder blade 1 behind it, so that it flows towards the rudder blade 1 at a better angle and flow state, thereby significantly improving the rudder effect at low speed and solving the problem of sluggish rudder effect at low speed. When the ship is sailing at high speed or the rudder blade 1 rotates at a large angle, the water flow speed increases sharply, and the impact force on the guide fin 201 also becomes very large. When the torque generated by this impact force is greater than the preload torque of the torsion spring 2041, the guide fin 201 will begin to overcome the spring force and deflect backward, reducing its actual angle of attack. The faster the water flow, the greater the impact force, and the greater the deflection angle of the guide fin 201, thereby automatically reducing the angle of attack and avoiding excessive drag and unnecessary lift. The angle limiting block 2042 ensures that the deflection angle of the guide fin 201 is limited to a safe range of ±5°, preventing excessive deflection that could damage the mechanism or produce adverse effects. Throughout the process, the streamlined sealing cover 301 always isolates the internal connecting shaft 202 and torsion spring 2041 and other mechanisms from external water flow and debris. Its smooth surface prevents any object that might get tangled from grabbing the rotating parts and can only slide past the cover surface, thus achieving anti-tangling.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving twisting rudder, characterized in that: It includes a rudder blade (1), the outer end of which is connected to an adaptive flow guide component (2), and an anti-winding component (3) is provided on the outside of the adaptive flow guide component (2). The adaptive flow guiding assembly (2) includes a flow guiding fin (201), a connecting shaft (202), and a mounting base (203). The mounting base (203) is fixedly installed on the leading edge of the rudder blade (1). The connecting shaft (202) is rotatably connected to the front end of the mounting base (203). The flow guiding fin (201) is fixedly installed on the front end of the connecting shaft (202). The adaptive flow guiding assembly (2) also includes an angle adjustment mechanism (204). The angle adjustment mechanism (204) includes a torsion spring (2041) and an angle limiting block (2042). The torsion spring (2041) is sleeved on the connecting shaft (202). One end of the torsion spring (2041) is fixedly connected to the mounting base (203), and the other end of the torsion spring (2041) is fixedly connected to the connecting shaft (202). The angle limiting block (2042) is fixedly connected to the front end of the mounting base (203).

2. The energy-saving twisting rudder according to claim 1, characterized in that: The angle adjustment mechanism (204) enables the guide fin (201) to have an initial pre-tightening angle under the impact of water flow, and can automatically deflect within a certain angle range as the water flow speed changes.

3. The energy-saving twisting rudder according to claim 1, characterized in that: The torsion spring (2041) provides an initial preload to the guide fin (201) to maintain the initial angle of attack of the guide fin (201), and the angle limiting block (2042) is used to limit the maximum and minimum deflection angle of the guide fin (201).

4. An energy-saving twisting rudder according to claim 3, characterized in that: The initial angle of attack is 3° to 8°, and the deflection angle is limited to ±5°.

5. An energy-saving twisting rudder according to claim 1, characterized in that: The guide fin (201) is a hollow structure, and the interior of the guide fin (201) is filled with foam.

6. The energy-saving twisting rudder according to claim 1, characterized in that: The anti-winding component (3) includes a sealing cover (301), which is fixedly connected to the front end of the mounting base (203) and has a streamlined structure.

7. An energy-saving twisting rudder according to claim 6, characterized in that: The connecting shaft (202) passes through the sealing cover (301) and is rotatably disposed with the sealing cover (301), and the guide fin (201) is rotatably disposed at the front end of the sealing cover (301).

8. An energy-saving twisting rudder according to claim 1, characterized in that: The upper end of the rudder blade (1) is fixedly connected to the rudder rod (4).

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