Ship capable of automatically cleaning propeller blades

Abstract

The ship comprises a ship body, the tail of the ship body is provided with a propeller assembly, the propeller assembly comprises the propeller blades and an automatic blade cleaning device, and the spiral face of each propeller blade is provided with a micro-texture and a cover plate capable of being opened and closed. The automatic blade cleaning device is arranged on the cover plate and is arranged to be accommodated in the propeller blade when the cover plate is closed and exposed out of the surface of the propeller blade when the cover plate is opened; the automatic blade cleaning device comprises an air cylinder, a telescopic support, an elastic piece and a cleaning head. The air cylinder is fixed to the inner side of the cover plate, the driving end of the air cylinder is connected with one end of the telescopic support, the cleaning head is arranged at the other end of the telescopic support, and the two ends of the elastic piece are connected with the telescopic support and the cleaning head respectively. According to the invention, the rotation efficiency and propulsive force of the propeller in water are ensured.

Description

Technical Field

[0001] The present invention relates to the field of ships, and more particularly to a ship with a self-cleaning propeller blade. Background Art

[0002] A ship is a commonly used water vehicle. Currently, most ships commonly use propellers as the driving power. A propeller refers to a device that rotates the blades in water and converts the rotational power of the engine into propulsion force. It can have two or more blades connected to the hub, and the back side of the blade is a helical surface or a propeller similar to a helical surface.

[0003] In practical applications, since the propeller is exposed to water for a long time and needs to keep rotating, a large amount of waterweeds or roots will be entangled around the propeller shaft. Over time, this will increase the power output of the motor, and even affect the rotation of the propeller, resulting in the obstruction of the ship's power. In addition, the current propeller blade surface is mostly a smooth surface, with a small friction force with water, which affects the propulsion effect of the ship. Summary of the Invention

[0004] The purpose of the present invention is to provide a ship with a self-cleaning propeller blade, which can ensure that the rotation of the ship's propeller will not be entangled by a large amount of waterweeds or roots around the propeller shaft, thus affecting the rotation of the propeller and resulting in the obstruction of the ship's power. The specific solutions are as follows: A ship with a self-cleaning propeller blade includes a hull. A propeller assembly is mounted at the tail of the hull. The propeller assembly includes propeller blades and a blade automatic cleaning device. The helical surface of the propeller blade is provided with micro-textures and an openable and closable cover plate. The blade automatic cleaning device is arranged on the cover plate and is configured to be accommodated inside the propeller blade when the cover plate is closed and exposed on the surface of the propeller blade when the cover plate is opened. Among them, the blade automatic cleaning device includes a cylinder, a telescopic bracket, an elastic member and a cleaning head. The cylinder is fixed inside the cover plate, and its driving end is connected to one end of the telescopic bracket. The cleaning head is arranged at the other end of the telescopic bracket. The two ends of the elastic member are respectively connected to the telescopic bracket and the cleaning head.

[0005] Preferably, the cover plate is arranged at the position near the shaft of the helical surface of the propeller blade, and is configured to be in a closed state when the propeller blade rotates in the first direction, and in an open state when the propeller blade rotates in the second direction opposite to the first direction.

[0006] Preferably, the surface of the cleaning head is provided with water flow holes.

[0007] Preferably, the blade automatic cleaning device further includes a cleaning head limit block fixed at the other end of the telescopic bracket. The propeller blade is provided with a cover plate limit block corresponding to the cover plate.

[0008] Preferably, the micro-texture is arranged at a position near the middle of the helical surface of the propeller blade to increase the frictional force between the propeller blade and water.

[0009] Preferably, the micro-texture is one or a combination of more of a microporous structure, a groove structure, or a coating structure.

[0010] Preferably, wing plate structures are mounted on both sides of the hull, and solar cells are mounted inside the hull; a solar panel electrically connected to the solar cells is arranged on the upper surface of the wing plate structure, and after converting solar energy into electric energy, the solar panel supplies power to the propeller assembly through the solar cells.

[0011] Preferably, the tail of the hull and the rudder surface are made of a shape memory alloy material and configured to change the shape of the hull according to the acquired temperature and speed information so as to improve the propulsion efficiency and stability of the ship; the structural part of the hull adopts a variable stiffness material and is configured to enhance or weaken the load-bearing capacity of the hull by adjusting the material stiffness.

[0012] Preferably, the propeller blade is disassembled and replaced through a slide rail structure in cooperation with rivets.

[0013] By providing the self-cleaning device and the micro-texture, the present invention ensures the rotation efficiency of the propeller, improves the propulsion force of the ship in water, and enhances the navigation stability and safety of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of the propeller micro-texture in the ship embodiment of the self-cleaning propeller blade of the present invention.

[0016] Figure 2 It is a schematic diagram of the disassembled propeller blade in the ship embodiment of the self-cleaning propeller blade of the present invention.

[0017] Figure 3 It is a schematic diagram of the wing plate structure in the ship embodiment of the self-cleaning propeller blade of the present invention.

[0018] Figure 4 It is a schematic diagram of the positional relationship in the ship embodiment of the self-cleaning propeller blade of the present invention.

[0019] Figure 5 In the embodiment of the ship with a self-cleaning propeller blade of the present invention, the automatic cleaning device is in the position of the propeller.

[0020] Figure 6 Structural diagram of the automatic cleaning device in the embodiment of the ship with a self-cleaning propeller blade of the present invention.

[0021] In the figure: 1 - Left-wing solar panel; 2 - Left-wing plate; 3 - Propeller blade; 4 - Micro-texture; 5 - Slide rail structure; 6 - Rivet hole; 7 - Hull; 8 - Right-wing plate; 9 - Right-wing solar panel; 10 - Main body solar panel; 11 - Motor; 12 - Rack; 13 - Cover plate; 14 - Cylinder; 15 - Telescopic bracket; 16 - Cover plate limit block; 17 - Elastic member; 18 - Cleaning head limit block; 19 - Cleaning head; 20 - Water flow hole. Detailed implementation manners

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment The following are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the following embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention.

[0024] Refer to the attached specification Figure 1, A ship with self - cleaning propeller blades, including a hull 7. A propeller assembly is carried at the tail of the hull. The propeller assembly includes propeller blades 3 and a blade automatic cleaning device. A micro - texture 4 and an openable and closable cover plate 13 are arranged on the helical surface of the propeller blades 3. The blade automatic cleaning device is arranged on the cover plate 13 and is configured to be accommodated inside the propeller blades 3 when the cover plate 13 is closed and to be exposed on the surface of the propeller blades 3 when the cover plate 13 is opened. Among them, the blade automatic cleaning device includes a cylinder 14, a telescopic bracket 15, a cover plate limit block 16, an elastic member 17, a cleaning head limit block 18, and a cleaning head 19. The cylinder 14 is fixed inside the cover plate 13, and its driving end is connected to one end of the telescopic bracket 15. The cleaning head 19 is arranged at the other end of the telescopic bracket 15. Both ends of the elastic member 17 are respectively connected to the telescopic bracket 15 and the cleaning head 19. The cleaning head limit block 18 is fixed at the other end of the telescopic bracket. Water flow holes 20 are arranged on the surface of the cleaning head 19 to allow water to pass through during cleaning. The cover plate limit block 16 arranged on the propeller blades 3 corresponds to the cover plate 13 and is used to limit the cover plate 13.

[0025] Refer to the attached drawings of the specification Figure 1-2 , On the surface of the propeller blade 3 in the figure, a micro - texture 4 is adopted, which can be in the form of micropores, grooves, coatings, etc., and the arrangement form of the micro - texture can also be adjusted according to the actual situation. Specifically, the micro - texture 4 is arranged at a position near the middle of the helical surface of the propeller blade 3. The micro - texture 4 is used to enhance the frictional force between the propeller blade 3 and water. Specifically, the surface of the micro - texture 4 can generate more microscopic contact points between the propeller blade and the water flow, increasing the frictional force. This frictional force can, to a certain extent, "grab" the water flow, making the water flow pass through the blade surface more stably, thereby improving the propulsion efficiency. Reducing vortex formation: When the surface of the propeller blade is smooth, the water flow may form separation vortices on the blade surface, and such vortices will reduce the propulsion force and increase energy consumption. However, the surface of the micro - texture 4 reduces the separation and vortex formation of the water flow by changing the interaction between the fluid and the blade, ensuring a more stable flow of the water flow and reducing energy loss. Optimizing the water flow direction: The micro - texture 4 can also guide the water flow on the propeller blade in a more appropriate direction, reducing unnecessary energy waste. Through the design of the micro - structure, the path of the water flow on the blade surface can be changed, making the water flow more evenly distributed, reducing the generation of vortices and turbulence.

[0026] By optimizing the design of the micro - texture 3, the propeller can generate greater propulsion force at a lower power output, thereby improving energy utilization efficiency and reducing energy loss during navigation. The design of the micro - texture 3 should be optimized according to the use of the ship and the navigation environment to ensure the best propulsion efficiency. The micro - texture 4 adopts the following three design methods (i.e., three embodiments): The micro-texture 4 is designed as micropores: The micropore design creates a series of tiny holes on the blade surface. By changing the way water flow contacts, the water flow no longer directly contacts the smooth blade surface, but is "screened" and "guided" through these micropores. In this way, the contact area between the water flow and the blade increases, the friction force is enhanced, effectively avoiding the energy waste generated when a large area of water flow slides over the blade. Principle: The micropores enable the water flow to flow through these tiny pores or micro-channels, thus creating more friction surfaces and increasing the propulsive force output. The size, distribution density and depth of the micropores need to be precisely calculated and experimentally optimized to increase the friction force without causing excessive water flow resistance and maintaining low energy consumption. The micro-texture 4 is designed as grooves: The groove (or trench) design makes fine grooves arranged along the water flow direction on the surface of the propeller blade. By guiding the water flow to pass through the blade surface more stably, the formation of eddy currents is reduced. The groove design can make the water flow form a more uniform flow on the blade surface, reducing the disorder and separation of the water flow. The grooves can guide the water flow to flow uniformly along the blade surface and change the water flow direction through the grooves, making the water flow fit the blade surface better and reducing the energy loss during the flow process. The depth, width and spacing of the grooves have an important impact on the propulsion efficiency. It must be continuously optimized in experiments to ensure that the propulsive force can be increased without increasing excessive water flow resistance. The micro-texture 4 is designed as a coating: The coating design is to coat a specific material on the surface of the propeller blade, such as a coating with high surface roughness or hydrophilicity, to increase the friction between the water flow and the blade surface. The use of the coating helps to change the surface characteristics of the blade, enabling the water flow to contact the blade better and improving the propulsion efficiency. The surface micro-texture and material of the coating will affect the contact and flow mode of the water flow. The friction coefficient of the coating is relatively high, which can enhance the interaction with water, thus improving the propulsion efficiency. The thickness, material and surface characteristics (such as roughness) of the coating need to be strictly experimentally verified to ensure that they can improve the thrust under different environments while avoiding excessive friction loss.

[0027] To ensure that the micro-texture can achieve the best propulsion efficiency, the design scheme needs to take into account the following aspects: Combined application of multiple micro-textures 4: In actual design, multiple micro-texture designs such as micropores, grooves, and coatings can be combined. By optimizing the combination of different micro-textures, the best propulsion effect can be achieved under different water conditions. For example, when sailing at high speed, the micropore and coating designs can reduce resistance, and when sailing at low speed, the groove design can increase the propulsive force. Adjustability of the micro-texture: Considering that different sea conditions have different requirements for the propulsion system, the design of the micro-texture can be adjusted according to the actual situation. For example, the micro-texture 4 of the propeller blade 3 can be designed in an adjustable form (such as variable aperture or adjustable groove depth), and automatically adjusted through system feedback under different loads and speeds to ensure the best matching of thrust and efficiency. See the attached​Figure 2 The propeller blade 3 adopts a quick-disassembly design, and the crew can choose to install different numbers of blades according to specific needs. Specifically, the propeller blade 3 is disassembled and replaced through the slide rail structure 5 in cooperation with the rivet holes 6 (through the rivet holes). The common configuration is 3 to 8 blades, and each blade is fixed by a simple quick-connection structure, such as the slide rail structure 5 and the rivet holes 6 shown in the figure, which is convenient for disassembly and replacement. The detachable design not only improves the adaptability of the ship, but also facilitates the maintenance and repair process, reducing the maintenance cost of the ship.

[0028] See the attached instruction Figure 3 , the wing plates are meshed with the gears on the motor 11 through the racks 12, and the crew can quickly adjust the extension lengths of the left wing plate 2 and the right wing plate 8 according to needs. The left wing plate 2 and the right wing plate 8 can be adjusted in real time according to conditions such as sailing speed, sea current, and wind force to optimize the fuel efficiency and sailing performance of the ship. This design improves the sailing adaptability and maintenance convenience of the ship.

[0029] See the attached instruction Figure 4 , the solar panels are installed on the surfaces such as the deck and superstructure of the ship, which can maximize the utilization of sunlight and convert solar energy into electrical energy. The electrical energy is stored in the battery pack for use by the ship when needed. The left-wing solar panel 1 and the right-wing solar panel 9 can provide auxiliary power for the ship, reduce fuel consumption, and lower carbon emissions, which is especially suitable for environments with sufficient sunlight. Specifically, wing plate structures (the left wing plate 2 and the right wing plate 8) are carried on both sides of the hull 7, and solar batteries are carried inside the hull 7; the left-wing solar panel 1 and the right-wing solar panel 9 electrically connected to the solar batteries are arranged on the upper surfaces of the wing plate structures, and after the left-wing solar panel 1 and the right-wing solar panel 9 convert solar energy into electrical energy, the propeller assembly is powered through the solar batteries.

[0030] See the attached instruction Figure 5 for the cover plate 13 of the automatic cleaning device in the attached instruction. The direction marked in the figure is the clockwise direction, indicating the rotation direction of the propeller when the hull is moving forward normally. The cover plate 13 is arranged at a position close to the shaft part on the helical surface of the propeller blade 3, and is configured to be in a closed state when the propeller blade 3 rotates in the first direction (clockwise), and in an open state when the propeller blade rotates in the second direction opposite to the first direction (counterclockwise).

[0031] See the attached instruction Figure 6 , the specific operation process of this self-cleaning device is as follows: (1) Water flow controls the opening and closing of the cover plate: When the propeller rotates clockwise (pushing the hull forward), the water flow direction is from left to right. At this time, the cover plate 13 remains closed, and the cleaning device does not work, reducing unnecessary resistance. When the propeller rotates counterclockwise (the water flow direction is from right to left), the cover plate automatically opens due to the change in surface flow velocity, triggering the cleaning mechanism.

[0032] (2) The cleaning head automatically opens: The cylinder 14 pushes the telescopic bracket 15 to extend, driving the cleaning head 19 to contact the surface of the propeller for cleaning. The cleaning head is connected to the telescopic bracket 15 through an elastic member 17 (such as a spring). During the working process, when the telescopic bracket 15 opens, the elastic member 17 is tightened, causing the cleaning head 19 to open and clean the surface of the propeller. With the expansion and contraction of the cylinder 14, the cleaning head limit block 18 on the cleaning head and the elastic member 17 interact with each other, enabling the cleaning head 19 to clean the surface of the propeller.

[0033] (3) The cylinder 14 drives the cleaning action: The telescopic movement of the cylinder 14 drives the entire cleaning device to move on the surface of the propeller blade 3 to complete the cleaning operation. The cleaning head 19 wipes and removes dirt from the surface of the propeller as the cylinder 14 moves, maintaining the performance and efficiency of the propeller.

[0034] In this embodiment, furthermore, the tail of the hull and the rudder surface are made of shape memory alloy materials and are configured to be able to change the shape of the hull according to the acquired temperature and speed information to improve the propulsion efficiency and stability of the ship; the structural part of the hull uses variable stiffness materials and is configured to be able to enhance or weaken the load-bearing capacity of the hull by adjusting the material stiffness.

[0035] In this embodiment, through the intelligent adaptive material control system configured on the ship or on the cloud platform, combining intelligent materials and intelligent algorithms, it is possible to realize self-adjustment and optimization of the characteristics of the hull according to the navigation environment and working conditions of the ship. The system dynamically adjusts the physical properties of the materials on the surface or inside the ship through a feedback control mechanism by real-time monitoring data such as sea conditions, hull attitude, speed, and pressure, thereby optimizing the navigation performance and energy efficiency.

[0036] Among them, the intelligent materials include: Shape memory alloy (SMA), which is used in key parts of the ship (such as the tail, rudder surface, etc.) with shape memory alloy materials. When the ship operates at different speeds or sea conditions, the shape memory alloy material can automatically change its shape according to the environmental temperature change, optimizing the contact between the water flow and the hull, thereby improving the propulsion efficiency and stability of the ship.

[0037] Piezoelectric material: Used for vibration monitoring and adjustment on the ship's surface. The piezoelectric material can convert mechanical stress into electrical energy. When the hull encounters wave impacts, the piezoelectric material can adjust the ship's control system through electrical signal feedback to reduce the impact of waves on the hull.

[0038] Variable stiffness material: Applied to the structural parts of the ship. By adjusting the material stiffness, it can enhance or weaken the load-bearing capacity of the hull. The stiffness of the material can be automatically adjusted in real time according to the ship's load, sea current, etc., to maintain the optimal performance of the ship's structure.

[0039] In this embodiment, furthermore, a real-time perception and feedback system can also be configured. By installing a sensor network, it can monitor information such as the force on the hull, waves, wind speed, ship speed, rudder angle, etc. in real time. All data is transmitted to the cloud platform through the Internet of Things (IoT). The intelligent algorithm analyzes the data in real time and transmits the control signal to the actuators on the ship (such as shape memory alloy rudder surfaces, piezoelectric material systems, etc.). The intelligent algorithm can perform fuzzy processing on the real-time data and calculate the changes in material properties that are most suitable for the current navigation conditions.

[0040] For example, the intelligent algorithm can self-learn how to achieve the best navigation performance through intelligent material adjustment by using the deep reinforcement learning algorithm. The system will gradually optimize the material adjustment strategy based on the feedback after each voyage to adapt to various sea conditions and loads. For example, the automatic adjustment of shape memory alloy can reduce the water flow resistance, thereby improving the propulsion efficiency and reducing fuel consumption. Reduce structural fatigue. Through the application of variable stiffness materials, the hull can adjust its stiffness according to different loads, effectively reducing the fatigue damage of the hull and extending the service life of the ship.

[0041] The following details the specific working process of the intelligent adaptive material control system: 1. Conduct real-time data collection (using the following sensors): Hull stress sensor (Strain Gauge): Just like "tactile sense", it senses the magnitude of the force on key parts of the hull, accuracy: ±0.1 MPa; Wave sensor (accelerometer): Just like "sense of balance", it senses the wave impacts on the ship, range: ±5g, accuracy: ±0.01g; Wind speed sensor (ultrasonic anemometer): Just like "sensing wind force", it measures the wind speed magnitude, range: 0 - 50m / s, accuracy: ±0.1m / s; Ship speed sensor (Doppler log): Just like "sensing speed", it measures the navigation speed of the ship, accuracy: ±0.1 knot; Rudder angle sensor (potentiometer): Just like "sensing direction", it measures the angle of the rudder. Accuracy: ±0.1 degree; The data collection frequency is to collect 10 times of data per second (10Hz) to ensure real-time performance.

[0042] 2. Perform data transmission and processing: Sensor data is transmitted to the cloud platform via the MQTT protocol for preprocessing, which specifically includes the following processing methods: Kalman filter noise reduction: Use the Kalman filter algorithm to eliminate noise interference in sensor data and improve data accuracy. The Kalman filter is like a "filter" that filters out inaccurate information; Normalization processing: Scale sensor data between 0 and 1 to facilitate subsequent calculations. Normalization is like unifying different units for easier comparison; Fuzzy logic judgment: Input variable fuzzification: Hull stress: Divided into three levels: "low", "medium", and "high". Use the triangular membership function to quantify this "fuzzy" degree. For example, a stress of 50 MPa is considered to have a "low" degree of 0.8 and a "medium" degree of 0.2. Wave height: Divided into three levels: "small", "medium", and "large", just like judging "small waves", "medium waves", and "large waves". Ship speed: Divided into three levels: "slow", "medium", and "fast"; Fuzzy rule base: The system presets a series of "if... then..." rules. For example: If the hull stress is "high", the wave is "large", and the ship speed is "fast", then "stronger" support is required and the rudder angle is adjusted to the "right". These rules are the summary of expert experience and the basis for the system's intelligent decision-making; Fuzzy reasoning: Based on the current sensor data, activate the corresponding fuzzy rules and calculate the "strength" of each rule.

[0043] 3. Adjust the hull state according to the processed data fed back, including the following steps: (1) Variable stiffness material adjustment: According to the result of fuzzy reasoning, adjust the stiffness of the variable stiffness material in the hull structure. If "stronger" support is required, increase the stiffness of the material, and vice versa. The variable stiffness material is controlled by a hydraulic actuator, and the actuator accepts a voltage signal of 0 - 10V, corresponding to a stiffness range of 0 - 15 GPa. (2) Shape memory alloy rudder angle adjustment: Shape memory alloy can change its shape according to temperature. The system controls the heater to change the temperature of the shape memory alloy, thereby adjusting the rudder angle. The heater accepts a voltage signal of 0 - 10V, corresponding to a rudder angle range of -10 to +10 degrees.

[0044] 4. Strengthen the learning optimization for data processing during navigation. Specifically, the Q-learning algorithm can be adopted: Using the Q-learning algorithm, let the system continuously learn during actual navigation to optimize the fuzzy rules. The Q-learning algorithm is optimized through the following parameters: State space: Discretize factors such as hull stress, wave height, and ship speed into different levels as the states of the Q-learning algorithm; Action space: Material stiffness adjustment (increase, maintain, decrease), rudder angle adjustment (left, middle, right) are used as the actions of the Q-learning algorithm; Reward function: The reward function is used to evaluate the quality of each action. For example, reducing energy consumption, improving navigation stability, and reducing deviation from the course will all obtain positive rewards; Q-value update: Continuously update the Q-table according to the reward function to enable the system to learn how to select the best action under different states.

[0045] 5. Conduct navigation feedback: The system records various data of each navigation (sensor data, control parameters, energy consumption, navigation stability, etc.).

[0046] Regularly use this data to update the fuzzy rules and Q-table, enabling the system to adapt to different sea conditions and loads and continuously improve the navigation performance.

[0047] All in all, the intelligent adaptive material control system senses environmental changes through sensors, makes decisions using fuzzy logic, controls intelligent materials to adjust the hull characteristics, and continuously optimizes the control strategy through reinforcement learning, ultimately achieving the intelligence and high efficiency of the ship.

[0048] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A ship with self-cleaning propeller blades, comprising a hull, and a propeller assembly is mounted at the tail of the hull, characterized in that, The propeller assembly includes propeller blades and a blade automatic cleaning device disposed near the shaft portion on the helical surface of the propeller blades. The helical surface of the propeller blades is provided with micro-textures and an openable and closable cover plate. The blade automatic cleaning device is disposed on the cover plate and is configured to be accommodated inside the propeller blades when the cover plate is closed and to be exposed on the surface of the propeller blades when the cover plate is opened. Among them, the blade automatic cleaning device includes a cylinder, a telescopic bracket, an elastic member, and a cleaning head. The cylinder is fixed inside the cover plate, and its driving end is connected to one end of the telescopic bracket. The cleaning head is disposed at the other end of the telescopic bracket, and the two ends of the elastic member are respectively connected to the telescopic bracket and the cleaning head.

2. The ship with a self-cleaning propeller blade according to claim 1, characterized in that, The cover plate is configured to be in a closed state when the propeller blades rotate in the first direction and to be in an open state when the propeller blades rotate in the second direction opposite to the first direction.

3. The ship with self-cleaning propeller blades according to claim 1, characterized in that, The surface of the cleaning head is provided with water flow holes.

4. The ship with a self-cleaning propeller blade according to claim 1, characterized in that, The blade automatic cleaning device further includes a cleaning head limit block fixed to the other end of the telescopic bracket. The propeller blade is provided with a cover plate limit block corresponding to the cover plate.

5. The ship with self-cleaning propeller blades according to claim 1, characterized in that, The micro-textures are disposed at a position near the middle of the helical surface of the propeller blades to increase the friction between the propeller blades and water.

6. The ship with self-cleaning propeller blades according to claim 5, characterized in that, The micro-textures are one or a combination of a microporous structure, a groove structure, or a coating structure.

7. The ship with a self-cleaning propeller blade according to claim 1, characterized in that, Both sides of the hull are equipped with wing plate structures, and a solar cell is installed inside the hull. The upper surface of the wing plate structure is provided with a solar panel electrically connected to the solar cell. After converting solar energy into electrical energy, the solar panel supplies power to the propeller assembly through the solar cell.

8. The ship with self-cleaning propeller blades according to claim 1, characterized in that, The tail and rudder surface of the hull are made of shape memory alloy materials and are configured to be able to change the hull shape according to the acquired temperature and speed information so as to improve the propulsion efficiency and stability of the ship. The structural part of the hull uses variable stiffness materials and is configured to be able to enhance or weaken the bearing capacity of the hull by adjusting the material stiffness.

9. The ship with a self-cleaning propeller blade according to any one of claims 1 to 8, characterized in that, The propeller blades are disassembled and replaced through a slide rail structure in cooperation with rivets.

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