CN113602464A

CN113602464A - Ship lifting and propelling device based on flapping wings

Info

Publication number: CN113602464A
Application number: CN202110710125.3A
Authority: CN
Inventors: 徐立; 章义平; 刘越; 陈森杨; 夏梦寒
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-11-05

Abstract

Disclosed is a vessel lifting and propulsion arrangement comprising: a plurality of flapping wings (5); actuating mechanism, actuating mechanism makes flapping wing (5) up-and-down motion produces boats and ships propulsive force and lift in aqueous, actuating mechanism includes: a crankshaft (2); the power system drives the crankshaft (2) to rotate; the two ends of each connecting rod (3) are respectively movably connected with the crankshaft (2) and one thrust rod (3) so as to convert the torque of the crankshaft (2) into power for driving the thrust rod (4) to move up and down, and one end, far away from the connecting rods, of the thrust rod (4) is connected with the flapping wing (5); and the attack angle control system is used for controlling the attack angle of the flapping wings (5). The device generates power for driving the ship to advance and supporting force for lifting the ship by treading the flapping wings (5) in water in a reciprocating manner, and lifts the ship away from the water surface to eliminate water resistance of the ship, so that the energy consumption of the ship is reduced.

Description

Ship lifting and propelling device based on flapping wings

Technical Field

The invention belongs to the field of ship power and energy conservation and resistance reduction, and particularly relates to a ship lifting and propelling device based on flapping wings.

Background

Ships mainly use diesel engines as power plants, which consume large amounts of fossil fuels and whose emissions pollute the environment. The pollution problem caused by the consumption of fossil fuel by the shipping industry is not negligible, nitrogen oxides and sulfides in the exhaust gas discharged by ships can cause soil acidification and seriously damage the ecological environment, and the exhaust gas can also influence the health of terrestrial organisms. Researchers are trying to find solutions to reduce ship emissions and save energy, such as hull lubrication drag reduction, ship deceleration, green fuel usage, etc. The lubricating resistance reduction of the ship body only can reduce the friction resistance coefficient between the ship body and water, and the effect of energy conservation and emission reduction on the ship is limited. The requirement of rapid logistics for economic globalization development is violated by ship deceleration. When the green fuel is adopted as a ship emission reduction scheme, the consumed fuel is also a non-renewable resource.

Disclosure of Invention

The invention provides a ship lifting and propelling device based on flapping wings, which is used for reducing water resistance of a ship during navigation. The device generates power for driving the ship to advance and supporting force for lifting the ship by the reciprocating water treading motion of the flapping wings in water, and lifts the ship body off the water surface to eliminate water resistance of the ship body, so that the energy consumption of the ship is reduced.

According to an aspect of an embodiment of the present invention, there is provided a vessel lifting and propulsion device comprising:

a plurality of flapping wings;

actuating mechanism, actuating mechanism makes flapping wing up-and-down motion produces boats and ships propulsive force and lift in aqueous, actuating mechanism includes: a crankshaft; the power system drives the crankshaft to rotate; the two ends of each connecting rod are respectively and movably connected with the crankshaft and one thrust rod so as to convert the torque of the crankshaft into power for driving the thrust rods to move up and down, and one end, far away from the connecting rods, of each thrust rod is connected with the flapping wings;

and the attack angle control system is used for controlling the attack angle of the flapping wings.

In some examples, the angle of attack control system provides zonal control of the angle of attack of the flapping wings on the vessel.

In some examples, the angle of attack control system controls the angle of attack of the flapping wings in a front left region, a front right region, a rear left region, and a rear right region of the vessel, respectively.

In some examples, the position where the thrust rod contacts the ship body is provided with a plurality of supporting parts for ensuring that the vertical movement of the thrust rod transmits the propulsive force generated by the flapping wings to the ship body.

In some examples, the support is a roller.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

Fig. 1 is a schematic view of a flapping wing based vessel lifting and propulsion arrangement.

Figure 2 is a side view of a thrust bar and a roller on the hull supporting the thrust bar.

Figure 3 is a top view of a thrust bar and rollers on the hull supporting the thrust bar.

FIG. 4 is a diagram of an angle of attack control grouping for a flapping wing based vessel lift and propulsion system.

Fig. 5 is a vessel equipped with a vessel lifting and propulsion device.

Description of reference numerals:

1-a flywheel;

2-a crankshaft;

3-a connecting rod;

4-a thrust rod;

5-flapping wings;

6-a roller;

i, controlling a left front area attack angle of a ship;

II, controlling a right front area attack angle of the ship;

III, controlling a left rear area attack angle of the ship;

IV, controlling a group of attack angles of the right rear region of the ship.

Detailed Description

Fig. 1 is a schematic view of a ship lifting and propelling device based on flapping wings according to an embodiment of the present invention. As shown in fig. 1, the apparatus includes a flywheel 1, a crankshaft 2, a plurality of connecting rods 3, a plurality of thrust rods 4, a plurality of flapping wings 5, and an angle of attack control system. Two ends of the crankshaft 2 are fixedly provided with flywheels 1, the flywheels 1 can be driven to rotate by a motor on a ship, and the flywheels 1 drive the crankshaft 2 to rotate. Two ends of the connecting rod 3 are respectively movably connected with the crankshaft 2 and the thrust rod 4. When the crankshaft 2 rotates, the connecting rod 3 converts the torque of the crankshaft 2 into power for driving the thrust rod 4 to move up and down, and the thrust rod 4 moves up and down to drive the flapping wings 5 connected with the thrust rod to move up and down in water. When the flapping wings 5 move up and down in water, the attack angle control system adjusts the attack angle of each flapping wing 5, so that the flapping wings 5 generate power for lifting and propelling the ship. The angle of attack control system adjusts the angle of attack of each flapping wing 5 in real time according to the weight of the ship and the required advancing speed of the ship. When the flapping wing 5 moves downwards, a larger ship lifting force and a larger ship thrust force can be obtained by increasing the attack angle of the flapping wing 5, and when the flapping wing 5 moves upwards, the ship lifting force cannot be generated but the ship thrust force can be generated, so that the attack angle when the flapping wing 5 moves upwards is smaller or zero. In a possible embodiment, an electric motor is connected to the flapping wing 5, and the angle of attack control system adjusts the angle of attack of each zone of the flapping wing 5 via the electric motor. Furthermore, the present application does not limit the specific number of flapping wings 5, which can be determined by the amount of weight of the vessel and the desired forward speed of the vessel.

As shown in fig. 2 and 3, both the propulsive force and the lifting force of the ship generated on the flapping wings 5 are transmitted to the hull by the thrust rod 4, so that a plurality of rollers 6 are installed in the gap between the thrust rod 4 and the hull, and the rollers 6 are installed around the surface of the thrust rod 4 to ensure the vertical movement of the thrust rod 4. In the process that the thrust rod 6 slides up and down, the roller 6 is used for reducing the friction force between the thrust rod 4 and the ship body on one hand, and transmitting the ship propelling force generated by the flapping wings 5 to the ship body on the other hand.

FIG. 4 is a block diagram of an embodiment of an angle of attack control assembly for an ornithopter. After the device is installed on a ship, the control of ship surging, swaying, heaving, rolling, pitching and yawing is realized. In order to realize stable control of the degree of freedom of the ship 6, all the flapping wings 5 are divided into four areas, namely a front area, a rear area, a left area and a right area, and the attack angle of the flapping wings is controlled in a subarea mode, so that the maneuvering performance of the ship is improved. In fig. 4, all the flapping wings 5 on the ship are divided into four areas I, II, III, and IV, and the angle-of-attack control system performs different angle-of-attack settings for the four areas to realize stable control of the ship. When the ship rolls or rolls, the ship obtains a roll moment by adjusting the difference of attack angles between the left area (I, III) and the right area (II, IV) of the ship. When the ship is pitching or pitching, the ship obtains the roll reducing moment by adjusting the difference of attack angles between the ship fore area (I, II) and the ship stern areas (III, IV).

Figure 5 shows a vessel equipped with the flapping wing based vessel lifting and propulsion unit. After the device of the invention is mounted to a vessel, the flapping wings 5 are thus subjected to repeated stepping motions in the water and generate forces that lift and propel the vessel.

The hydrofoil ship can lift the ship body off the water surface through the hydrofoil only at a certain navigational speed, and the device can lift the ship on the water surface to achieve the effect of eliminating the resistance of the ship body when the ship is at a low navigational speed. Besides, the hydrofoil ship needs to be provided with a propeller as power, and the device generates ship power through the water treading motion of the flapping wings in water, so that the device has smaller noise.

The device lifts the ship body off the water surface through the treading motion of the flapping wings. After the ship body is lifted out of the water surface, the wet surface area of the ship body becomes zero, and the water resistance of the ship body becomes zero. Therefore, the device can well realize the energy conservation and emission reduction of the ship.

The power for advancing the ship and the lifting force of the ship are generated by the treading motion of the flapping wings, and compared with the ship driven by a propeller power device, the ship has lower vibration and noise.

The course of the ship is controlled by controlling the attack angle difference of the port side flapping wing and the starboard side flapping wing of the ship, and the turning around of the ship can be realized when the ship has zero navigational speed, so that the ship provided with the device has good maneuverability.

Claims

1. A vessel lifting and propulsion device, comprising:

a plurality of flapping wings;

2. The marine lift and propulsion device of claim 1, wherein the angle of attack control system provides zonal control of the angle of attack of the flapping wings on a marine vessel.

3. The vessel lifting and propulsion device according to claim 2, wherein the angle of attack control system controls the angle of attack of the flapping wings in the front left, front right, rear left and rear right regions of the vessel, respectively.

4. The ship lifting and propelling device of claim 1 or 2, wherein the thrust rod is in contact with the ship body at a position where the thrust rod is provided with a plurality of supports for ensuring that the vertical movement of the thrust rod transmits the propelling force generated by the flapping wings to the ship body.

5. The marine lifting and propulsion device of claim 4, wherein the support portions are rollers.