Ship rotary drum sail device with anti-rolling function and method

Abstract

The invention discloses a ship rotating cylinder sail device with a stabilization function and a method, and relates to the technical field of ships, the ship rotating cylinder sail device comprises a rotating cylinder, the rotating cylinder comprises an inner cylinder and an outer cylinder, a water storage bin is formed between the inner cylinder and the outer cylinder, a water level control frame is arranged in the water storage bin, and a sealing air bag is arranged in the water level control frame; an inner cylinder limiting plate is arranged in the water storage bin, a plurality of limiting holes are evenly formed in the inner cylinder limiting plate in an up-down array mode, a circular rack is movably arranged at the upper end of the water level control frame, and the circular rack is controlled by a limiting mechanism to be inserted into the limiting holes to limit the water level control unit. A circular rack is driven by a limiting mechanism to be inserted into a limiting hole, the water level control frame is fixed, the water storage amount in the water storage bin can be more accurately adjusted by forming a plurality of limiting holes with different heights, and therefore the mass of a rotating cylinder is accurately adjusted, and the swing amplitude of a ship can be more finely adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ship technology, in particular to a ship rotating cylinder wind sail device with a stabilizing function and a method. BACKGROUND

[0002] The ship rotating cylinder wind sail is a wind-assisted propulsion device based on the Magnus effect. When the motor drives the rotating cylinder to rotate, the air pressure on the side of the rotating cylinder facing the wind increases, and the air pressure on the side of the rotating cylinder facing away from the wind decreases. As a result, a force perpendicular to the airflow direction is generated, which is projected onto the forward direction of the ship to provide a forward thrust. This principle is consistent with the force exerted by a football player kicking a ball in the air to draw an arc.

[0003] A ship rotating cylinder wind sail device with a stabilizing function and an application method are disclosed in Chinese patent CN117885881A. The device includes air vents, high-level air vents, middle-level water vents, low-level water vents, high-level water storage tanks, middle-level water storage tanks, low-level water storage tanks, bearings, high-level liquid sensors, middle-level liquid sensors, low-level liquid sensors, drain pipes, three-way valves, water pumps, central shafts, rotating cylinders, water delivery pipes, and water inlet pipes. The invention is based on the problem of affecting the stability of the ship during the application of the rotating cylinder wind sail. By utilizing the hollow feature of the rotating cylinder wind sail, the mass of the entire rotating cylinder wind sail is increased, thereby improving the rotational inertia of the rotating cylinder wind sail and the stability of the ship during navigation. However, the invention has the following defects: the high-level water storage tank, the middle-level water storage tank, and the low-level water storage tank are provided, and water is supplied to the inside of the high-level water storage tank, the middle-level water storage tank, and the low-level water storage tank in sequence to increase the mass of the rotating cylinder wind sail. This results in only three changes in the mass of the rotating cylinder wind sail, and the difference between the three masses is large. Therefore, the ship's swing amplitude cannot be adjusted more finely. SUMMARY

[0004] The present application aims to provide a ship rotating cylinder wind sail device with a stabilizing function to solve the problems mentioned in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a ship rotating cylinder wind sail device with a stabilizing function, comprising a base, a central shaft is arranged at the middle of the upper end of the base, a rotating cylinder is rotatably installed outside the central shaft, the rotating cylinder comprises an inner cylinder and an outer cylinder, and a water storage compartment is formed between the inner cylinder and the outer cylinder, the water storage compartment is annular in shape.

[0006] The bottom of the water storage compartment is provided with a water supply and drainage unit for storing and draining water in the water storage compartment.

[0007] The water storage bin is internally provided with a water level control unit for controlling water level height, and the water level control unit is floated in the interior of the water storage bin by water buoyancy;

[0008] The water level control unit comprises a water level control frame, and the water level control frame is internally provided with a sealing air bag for sealing water level;

[0009] The water storage bin is internally provided with an outer cylinder limiting plate and an inner cylinder limiting plate for limiting the water level control frame, and a sliding groove is arranged between the outer cylinder limiting plate and the inner cylinder limiting plate, the water level control frame is movably connected in the sliding groove, and a plurality of limiting holes are uniformly arranged on the inner cylinder limiting plate;

[0010] A round rack is movably arranged on the upper end of the water level control frame, and the round rack is located on one side of the limiting hole, and the round rack is controlled by a limiting mechanism to be inserted into the limiting hole to limit the water level control unit;

[0011] A laser range finder is arranged on the upper end in the interior of the water storage bin for monitoring the distance of the water level control frame, and the laser range finder controls the height of the water level control frame to make the round rack and one of the limiting holes coaxial.

[0012] Preferably, the outer cylinder limiting plate and the inner cylinder limiting plate are provided in two groups and symmetrically distributed in the interior of the water storage bin;

[0013] The outer cylinder limiting plate is fixedly connected with the outer cylinder, and the inner cylinder limiting plate is fixedly connected with the inner cylinder.

[0014] Preferably, the limiting mechanism comprises a bidirectional telescopic rod fixed on the upper end of the water level control frame, straight racks are arranged at both ends of the bidirectional telescopic rod, two straight racks are respectively meshingly connected with two gear wheels I, and the two gear wheels I are rotatably installed on the upper end of the water level control frame through a rotating shaft;

[0015] A fixed plate II is arranged on one side of the limiting hole, the round rack is slidably connected with the fixed plate II, and the round rack is meshingly connected with a gear wheel II;

[0016] An arc-shaped guide column is slidably connected with the water level control frame through a support on the upper end of the water level control frame, arc-shaped racks I and II are respectively arranged at both ends of the arc-shaped guide column, the arc-shaped rack I is meshingly connected with the gear wheel I, and the arc-shaped rack II is meshingly connected with the gear wheel II.

[0017] Preferably, a fixed plate I is arranged on the upper end of the water level control frame and located on the other side of the limiting hole, and a pressure sensor is arranged on one side of the fixed plate I for detecting whether the round rack is inserted into the interior of the limiting hole.

[0018] Preferably, the water level control frame comprises an upper ring and a lower ring, and the upper ring and the lower ring are fixedly connected through a plurality of connecting columns;

[0019] The upper ring and the lower ring are symmetrically provided with two groups of sliding blocks which are connected with the sliding grooves in an up-down sliding mode.

[0020] Preferably, the sealing air bag comprises two groups of notches corresponding to the two groups of outer cylinder limiting plates and inner cylinder limiting plates.

[0021] The sealing air bag is inflated by the air pump.

[0022] Preferably, the water level control frame is provided with a floating ring at the bottom for improving the buoyancy of the water level control unit.

[0023] Preferably, the rotating cylinder is provided with air holes near the upper end for stabilizing the internal air pressure of the water storage bin.

[0024] Preferably, the central shaft is externally provided with a plurality of bearings, the rotating cylinder is rotatably connected with the central shaft through the bearings, and the rotating cylinder is driven to rotate by the motor.

[0025] A ship rotating cylinder wind sail with a roll reduction function and a use method thereof, which are used in cooperation with a ship rotating cylinder wind sail device with a roll reduction function, and comprise the following steps:

[0026] S1, water is supplied to the water storage bin through the water supply and drainage unit, the mass of the rotating cylinder is increased, the moment of inertia is improved, and the rolling amplitude is suppressed.

[0027] S2, after the water storage bin is filled with water, the water level control unit floats at the upper end of the water level, the height of the water level control frame is monitored in real time by the laser range finder, when the water level control frame reaches the predetermined height, the water supply and drainage unit stops supplying water, the circular rack is inserted into the limiting hole through the limiting mechanism, the water level control frame is fixed, and whether the circular rack is completely inserted into the limiting hole can be detected by the pressure sensor.

[0028] S3, the sealing air bag is inflated by the air pump, so that the sealing air bag is inflated in the water level control frame, and the water level is sealed.

[0029] S4, the motor drives the rotating cylinder to rotate to improve the ship thrust and reduce the rolling amplitude.

[0030] Compared with the prior art, the beneficial effects of the present application are:

[0031] The water storage bin can be supplied with water by the water supply and drainage unit, the mass of the rotating cylinder can be increased after the water storage bin is filled with water, the moment of inertia can be improved, and the rolling amplitude can be suppressed.

[0032] When the water storage warehouse is supplied with water by the water supply and drainage unit, the water supply and drainage unit is floated at the upper end of the water level through the floating ring. With the rising of the water level inside the water storage warehouse, the slider on the water level control frame slides upward in the sliding groove. The laser range finder can monitor the height of the water level control frame in real time. When the water level control frame reaches the predetermined height, the water supply and drainage unit stops supplying water. The limit mechanism drives the round rack to insert into the limit hole to fix the water level control frame. The round rack inserted into the limit hole with different heights represents different water storage in the water storage warehouse. By setting several limit holes with different heights, the water storage in the water storage warehouse can be more accurately adjusted, so that the mass of the rotating drum can be accurately adjusted, and the ship swing amplitude can be more finely adjusted.

[0033] When the water level control frame is fixed, the air pump inflates the sealing air bag, so that the sealing air bag is inflated in the water level control frame, the water level is sealed, and the water in the water storage warehouse is in a relatively stable state. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the application;

[0035] Figure 2 It is a front view of the application;

[0036] Figure 3 It is a top view of the application;

[0037] Figure 4 It is a schematic diagram of the internal structure of the application;

[0038] Figure 5 It is a schematic diagram of the water level control unit structure of the application Figure 1 ;

[0039] Figure 6 It is a schematic diagram of the water level control unit structure of the application Figure 2 ;

[0040] Figure 7 It is a schematic diagram of the water level control frame structure of the application;

[0041] Figure 8 It is a schematic diagram of the sealing air bag structure of the application.

[0042] In the figure: 1, base; 11, central shaft; 2, rotating cylinder; 21, inner cylinder; 22, outer cylinder; 23, water storage compartment; 24, outer cylinder limiting plate; 25, inner cylinder limiting plate; 26, sliding groove; 27, limiting hole; 28, air hole; 3, water supply and drainage unit; 4, water level control frame; 41, fixed plate one; 42, fixed plate two; 43, upper ring; 44, lower ring; 45, connecting column; 46, sliding block; 5, sealing air bag; 51, notch; 6, limiting mechanism; 61, circular rack; 62, bidirectional telescopic rod; 63, straight rack; 64, gear one; 65, gear two; 66, arc-shaped guide column; 67, arc-shaped rack one; 68, arc-shaped rack two; 7, laser range finder; 8, pressure sensor; 9, floating ring; 10, bearing. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0044] Please refer to Figures 1-8 The present application provides a technical solution: a ship rotating cylinder wind sail device with a roll reduction function, comprising a base 1, a central shaft 11 is arranged at the middle of the upper end of the base 1, a rotating cylinder 2 is rotatably arranged outside the central shaft 11, a plurality of bearings 10 are arranged outside the central shaft 11, the rotating cylinder 2 is rotatably connected with the central shaft 11 through the bearings 10, and the rotating cylinder 2 is driven to rotate by a motor.

[0045] The rotating cylinder 2 comprises an inner cylinder 21 and an outer cylinder 22, and a water storage compartment 23 is formed between the inner cylinder 21 and the outer cylinder 22, the water storage compartment 23 is annular in shape, a water supply and drainage unit 3 for supplying and draining water to the water storage compartment 23 is arranged at the bottom of the water storage compartment 23, and the rotating cylinder 2 is provided with an air hole 28 near the upper end for stabilizing the air pressure inside the water storage compartment 23.

[0046] The water supply and drainage unit 3 can supply water to the water storage compartment 23, and the water stored in the water storage compartment 23 can increase the mass of the rotating cylinder 2, thereby increasing the moment of inertia and suppressing the rolling amplitude. When the water supply and drainage unit 3 supplies water to the water storage compartment 23, the air inside the water storage compartment 23 can be discharged through the air hole 28, so that the air pressure inside and outside the water storage compartment 23 is in a stable state.

[0047] A water level control unit for controlling the water level height is arranged inside the water storage compartment 23, and the water level control unit floats in the water storage compartment 23 by the buoyancy of water;

[0048] The water level control unit comprises a water level control frame 4, the inside of the water storage bin 23 is provided with outer cylinder limiting plates 24 and inner cylinder limiting plates 25 for limiting the water level control frame 4, the outer cylinder limiting plates 24 and the inner cylinder limiting plates 25 are provided with two groups and are symmetrically distributed inside the water storage bin 23, the outer cylinder limiting plates 24 are fixedly connected with the outer cylinder 22, the inner cylinder limiting plates 25 are fixedly connected with the inner cylinder 21, a sliding groove 26 is arranged between the outer cylinder limiting plates 24 and the inner cylinder limiting plates 25, the water level control frame 4 is movably connected in the sliding groove 26, and a plurality of limiting holes 27 are uniformly arranged on the inner cylinder limiting plates 25 in the up-down direction;

[0049] The water level control frame 4 comprises upper rings 43 and lower rings 44, the upper rings 43 and the lower rings 44 are fixedly connected through a plurality of connecting columns 45, the upper rings 43 and the lower rings 44 are symmetrically provided with two groups of sliding blocks 46, and the sliding blocks 46 are movably connected with the sliding groove 26 in the up-down direction;

[0050] The water level control frame 4 is provided with a floating ring 9 at the bottom for improving the buoyancy of the water level control unit;

[0051] The water level control frame 4 is movably provided with a circular rack 61 at the upper end, and the circular rack 61 is located on one side of the limiting hole 27, the circular rack 61 is controlled by the limiting mechanism 6 to be inserted into the limiting hole 27 to limit the water level control unit;

[0052] The water level control frame 4 is provided with a fixed plate one 41 at the upper end, and the fixed plate one 41 is located on the other side of the limiting hole 27, one side of the fixed plate one 41 is provided with a pressure sensor 8 for detecting whether the circular rack 61 is inserted into the limiting hole 27;

[0053] The inside of the water storage bin 23 is provided with a laser range finder 7 at the upper end for monitoring the distance of the water level control frame 4, the laser range finder 7 controls the height of the water level control frame 4 so that the circular rack 61 and one of the limiting holes 27 are coaxial.

[0054] When the water supply and drainage unit 3 supplies water to the water storage compartment 23, the water supply and drainage unit 3 is floated at the upper end of the water level by the floating ring 9. As the water level in the water storage compartment 23 rises, the sliding block 46 on the water level control frame 4 slides upward in the sliding groove 26, and the laser range finder 7 can monitor the height of the water level control frame 4 in real time. When the water level control frame 4 reaches the predetermined height, the water supply and drainage unit 3 stops supplying water. The circular rack 61 is driven by the limiting mechanism 6 to insert into the limiting hole 27 to fix the water level control frame 4. The different insertion heights of the circular rack 61 in the limiting hole 27 represent different water storage amounts in the water storage compartment 23. By setting several limiting holes 27 with different heights, the water storage amount in the water storage compartment 23 can be more accurately adjusted, so that the mass of the rotating cylinder 2 can be accurately adjusted, and the ship swing amplitude can be more finely adjusted. The pressure sensor 8 can detect whether the circular rack 61 is completely inserted into the limiting hole 27. When the circular rack 61 is completely inserted into the limiting hole 27, the circular rack 61 will press the pressure sensor 8 through the limiting hole 27, so the system can prompt that the water level control frame 4 has been fixed, and the next step can be performed.

[0055] The limiting mechanism 6 includes a bidirectional telescopic rod 62 fixed to the upper end of the water level control frame 4. The bidirectional telescopic rod 62 is provided with a straight rack 63 at both ends. The two straight racks 63 are respectively meshed and connected with two gear wheels I 64. The two gear wheels I 64 are rotatably installed on the upper end of the water level control frame 4 through a rotating shaft. One side of the limiting hole 27 is provided with a fixed plate II 42. The circular rack 61 is slidably connected with the fixed plate II 42, and the circular rack 61 is meshed and connected with a gear wheel II 65. The upper end of the water level control frame 4 is slidably connected with an arc-shaped guide column 66 through a support. The arc-shaped guide column 66 is provided with an arc-shaped rack I 67 and an arc-shaped rack II 68 at both ends. The arc-shaped rack I 67 is meshed and connected with the gear wheel I 64, and the arc-shaped rack II 68 is meshed and connected with the gear wheel II 65.

[0056] When the limiting mechanism 6 works, the bidirectional telescopic rod 62 drives the straight racks 63 at both ends to move, so that the two gear wheels I 64 rotate, the two arc-shaped racks I 67 move in an arc shape, the arc-shaped guide column 66 slides on the support at the upper end of the water level control frame 4, the two arc-shaped racks II 68 drive the two gear wheels II 65 to rotate, and the two circular racks 61 move and insert into the limiting hole 27, so as to fix the water level control frame 4.

[0057] The water level control frame 4 is provided with a sealing air bag 5 for sealing the water level. The sealing air bag 5 includes two groups of notches 51, and the two groups of notches 51 correspond to the two groups of outer cylinder limiting plates 24 and inner cylinder limiting plates 25.

[0058] The sealing air bag 5 is inflated by the air pump (not shown in the figure), when the water level control frame 4 is fixed, the air pump inflates the sealing air bag 5, so that the sealing air bag 5 is inflated inside the water level control frame 4, the water level is sealed, so that the water in the water storage room 23 is in a relatively stable state.

[0059] A ship rotating cylinder wind sail with a function of reducing the swing is used according to a ship rotating cylinder wind sail device with a function of reducing the swing, and the method comprises the following steps:

[0060] S1, the water storage room 23 is supplied with water by the water supply and drainage unit 3, the mass of the rotating cylinder 2 is increased, the moment of inertia is increased, and the swing amplitude is suppressed;

[0061] S2, after the water storage room 23 is filled with water, the water level control unit floats on the upper end of the water level, the height of the water level control frame 4 is monitored in real time by the laser range finder 7, when the water level control frame 4 reaches the predetermined height, the water supply and drainage unit 3 stops supplying water, the limit mechanism 6 drives the circular rack 61 to insert into the limit hole 27, the water level control frame 4 is fixed, and whether the circular rack 61 is completely inserted into the limit hole 27 can be detected by the pressure sensor 8;

[0062] S3, the sealing air bag 5 is inflated by the air pump, so that the sealing air bag 5 is inflated inside the water level control frame 4, and the water level is sealed;

[0063] S4, the motor drives the rotating cylinder 2 to rotate, so as to increase the ship thrust and reduce the swing amplitude.

[0064] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A ship cyclone wind sail device with a function of reducing the rocking, comprising a base (1), a central shaft (11) is arranged in the middle of the upper end of the base (1), and a cyclone (2) is rotatably arranged outside the central shaft (11), characterized in that: The rotating drum (2) comprises an inner drum (21) and an outer drum (22), and a water storage bin (23) is formed between the inner drum (21) and the outer drum (22), wherein the water storage bin (23) is annular in shape; The bottom of the water storage bin (23) is provided with a water supply and drainage unit (3) for storing and draining water in the water storage bin (23); The water storage bin (23) is internally provided with a water level control unit for controlling the water level, and the water level control unit is floated in the water storage bin (23) by the buoyancy of water; The water level control unit comprises a water level control frame (4), and the water level control frame (4) is internally provided with a sealing air bag (5) for sealing the water level; The water storage bin (23) is internally provided with an outer drum limiting plate (24) and an inner drum limiting plate (25) for limiting the water level control frame (4), and a sliding groove (26) is arranged between the outer drum limiting plate (24) and the inner drum limiting plate (25), wherein the water level control frame (4) is movably connected in the sliding groove (26), and a plurality of limiting holes (27) are uniformly arranged on the inner drum limiting plate (25) in up and down directions; A circular rack (61) is movably arranged on the upper end of the water level control frame (4), and the circular rack (61) is located on one side of the limiting hole (27), and the circular rack (61) is controlled by a limiting mechanism (6) to be inserted into the limiting hole (27) to limit the water level control unit; A laser range finder (7) is arranged on the upper end of the water storage bin (23) for monitoring the distance of the water level control frame (4), and the laser range finder (7) controls the height of the water level control frame (4) to make the circular rack (61) and one of the limiting holes (27) coaxial.

2. A ship rotating cylinder wind sail device with a function of reducing yaw according to claim 1, characterized in that: The outer drum limiting plate (24) and the inner drum limiting plate (25) are provided in two groups and symmetrically arranged in the water storage bin (23); The outer drum limiting plate (24) is fixedly connected with the outer drum (22), and the inner drum limiting plate (25) is fixedly connected with the inner drum (21).

3. A ship rotating cylinder wind sail device with a function of reducing yaw according to claim 1, characterized in that: The limiting mechanism (6) comprises a bidirectional telescopic rod (62) fixedly arranged on the upper end of the water level control frame (4), and straight racks (63) are arranged at both ends of the bidirectional telescopic rod (62), two gears (64) are respectively meshingly connected with the two straight racks (63), and the two gears (64) are rotatably arranged on the upper end of the water level control frame (4) through rotating shafts; A fixed plate (42) is arranged on one side of the limiting hole (27), the circular rack (61) is slidably connected with the fixed plate (42), and the circular rack (61) is meshingly connected with a gear (65); An arc-shaped guide column (66) is slidably connected with the water level control frame (4) through a support on the upper end of the water level control frame (4), arc-shaped racks (67) and (68) are respectively arranged at both ends of the arc-shaped guide column (66), the arc-shaped rack (67) is meshingly connected with the gear (64), and the arc-shaped rack (68) is meshingly connected with the gear (65).

4. A ship rotating cylinder wind sail device with a function of reducing yaw according to claim 1, characterized in that: A fixed plate (41) is arranged on the upper end of the water level control frame (4), and the fixed plate (41) is located on the other side of the limiting hole (27), and a pressure sensor (8) is arranged on one side of the fixed plate (41) for detecting whether the circular rack (61) is inserted into the limiting hole (27).

5. A ship rotary cylinder wind sail device with a stabilizing function according to claim 1, characterized in that: The water level control frame (4) comprises an upper ring (43) and a lower ring (44), which are fixedly connected by a plurality of connecting columns (45); The upper ring (43) and the lower ring (44) are symmetrically provided with two groups of sliding blocks (46), which are connected with the sliding grooves (26) in an up-down sliding manner.

6. A ship rotary cylinder wind sail device with a stabilizing function according to claim 1, characterized in that: The sealing air bag (5) comprises two groups of notches (51) corresponding to the two groups of outer cylinder limiting plates (24) and inner cylinder limiting plates (25). The sealing air bag (5) is inflated by a gas pump.

7. A ship rotating cylinder wind sail device with a function of reducing yaw according to claim 1, characterized in that: The water level control frame (4) is provided at the bottom with a floating ring (9) for improving the buoyancy of the water level control unit.

8. A ship rotating cylinder wind sail device with a function of reducing yaw according to claim 1, characterized in that: The rotating cylinder (2) is provided near the upper end with an air hole (28) for stabilizing the internal air pressure of the water storage bin (23).

9. A ship rotating cylinder wind sail device with a function of reducing yaw according to claim 1, characterized in that: The center shaft (11) is provided on the outside with a plurality of bearings (10), and the rotating cylinder (2) is rotatably connected with the center shaft (11) through the bearings (10), and the rotating cylinder (2) is driven to rotate by the motor.

10. A method for using a ship rotating cylinder wind sail with a function of reducing rolling, characterized in that, the method is used in combination with the ship rotating cylinder wind sail device with a function of reducing rolling according to any one of claims 1-9. The method comprises the following steps: S1, the water storage bin (23) is supplied with water by the water supply and drainage unit (3), the mass of the rotating cylinder (2) is increased, the rotational inertia is improved, and the swing amplitude is suppressed; S2, after the water storage bin (23) is filled with water, the water level control unit floats on the upper end of the water level, the height of the water level control frame (4) is monitored in real time by the laser range finder (7), when the water level control frame (4) reaches the predetermined height, the water supply and drainage unit (3) stops supplying water, the circular rack (61) is inserted into the limiting hole (27) by the limiting mechanism (6), the water level control frame (4) is fixed, and whether the circular rack (61) is completely inserted into the limiting hole (27) can be detected by the pressure sensor (8); S3, the sealing air bag (5) is inflated by the gas pump, so that the sealing air bag (5) is inflated in the water level control frame (4), and the water level is sealed; S4, the motor drives the rotating cylinder (2) to rotate to improve the ship thrust and reduce the swing amplitude.

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