Hull protection device for ship

Abstract

The invention provides a ship body protection device for a ship, and relates to the technical field of ship body protection, the ship body protection device comprises a ship bottom, an anti-collision column is fixed on the surface of the bottommost part of the ship bottom, an anti-collision assembly is arranged in the anti-collision column, the anti-collision assembly comprises a storage frame, and a rolling shaft is rotatably mounted in the storage frame through a bearing and a torsion spring; a plurality of air bags are wound on the winding shaft, every two adjacent air bags are fixedly connected, the air bag at the bottommost part of the storage frame is fixed to the interior of the anti-collision column, and a driving assembly is arranged at the top of the ship bottom slope. The anti-collision assembly can achieve the anti-collision effect on the two sides of the ship, the anti-collision assembly can be opened when used and closed when not used, normal traveling and the size of the ship cannot be affected, the anti-collision assembly can clean the slope of the ship when unfolded, and manual cleaning of algae and shells is replaced.

Description

Technical Field

[0001] This invention relates to the field of ship hull protection technology, specifically to a ship hull protection device. Background Technology

[0002] Ships fall under the category of marine engineering equipment manufacturing, such as semi-submersible transport vessels. When ships are sailing or docked, they are prone to collisions and scrapes, which can not only damage the hull but also pose safety hazards. To reduce the losses caused by collisions, existing ships usually place some discarded rubber tires around the hull. Although this method can have a certain anti-collision effect, it will increase the lateral width of the hull, and the tires are also prone to damage or falling off after long-term use, gradually weakening the anti-collision effect of the ship. In addition, because the boat is submerged in water for a long time, algae and shells tend to accumulate on the sloping bottom. Excessive accumulation not only increases the burden on the boat but also easily damages its structure, and it is also quite inconvenient to clean. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a ship hull protection device to solve the problems mentioned in the background art. The invention has a novel structure. By cooperating with the drive component and the anti-collision component, the airbag can be deployed and inflated to provide anti-collision effect on both sides of the ship. This function can be turned on when in use and turned off when not in use, without affecting the normal navigation and volume of the ship. When the anti-collision component is deployed, it will also clean the sloping surface of the ship, replacing manual cleaning of algae and shells.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a ship hull protection device, comprising a hull bottom, with a crash bar fixed to the bottommost surface of the hull bottom. The crash bar contains a crash protection assembly, which includes a storage frame. Inside the storage frame, a winding shaft is rotatably mounted via bearings and a torsion spring. Multiple airbags are wound onto the winding shaft, with adjacent airbags fixedly connected. The bottommost airbag of the storage frame is fixed to the interior of the crash bar. A driving assembly is located at the top of the sloping surface of the hull bottom, and the driving assembly includes a shaft. The shaft has pull ropes wound at both ends, and the storage frame is connected to the pull ropes at both ends. An inflation assembly is provided at the top of the middle position of the shaft. The inflation assembly includes an air cylinder. There are two sets of air cylinders with opposite outlet directions. A push plate is slidably connected inside the air cylinder. A transmission belt is installed at the outer end of the air cylinder. The transmission belt includes a driving pulley and a driven pulley. The driving pulley is sleeved on the shaft, and the driven pulley is rotatably mounted on the outer surface of the air cylinder through a bearing. Guide rails are fixed at equal intervals on the inclined surface of the bottom of the boat, and the storage frame slides along the guide rails.

[0005] Furthermore, the lower end of the storage frame is provided with an opening parallel to the side of the ship's bottom, and the top of the anti-collision post is provided with a storage groove parallel to the sloping surface of the ship's bottom, and the storage frame can enter the storage groove.

[0006] Furthermore, the drive assembly also includes mounting seats, with mounting seats rotatably mounted on both ends of the shaft via bearings. The mounting seats are fixed on both sides of the bottom of the boat. First winding seats are fixed at the same straight line position on both ends of the shaft and the storage groove, and the two ends of the pull rope are respectively wound inside the first winding seats on the same straight line between the shaft and the storage groove.

[0007] Furthermore, a motor is fixed to the outer end of the first take-up holder, the output end of the motor is fixedly connected to the take-up shaft of the first take-up holder, and the outer surface of the motor is provided with a waterproof seal.

[0008] Furthermore, the anti-collision component also includes fixing rings, with fixing rings fixed on both sides of the storage frame, and the fixing rings are fixedly sleeved on the surface of the pull rope.

[0009] Furthermore, a rotating frame is fixed at equal intervals on the top of the storage frame, and a sweeping frame is rotatably installed inside the rotating frame via bearings. The sweeping frame consists of three rubber plates, and a brush is fixed on the surface of the storage frame corresponding to the sloping bottom of the boat, and the brush slides in contact with the sloping bottom of the boat.

[0010] Furthermore, connectors are fixed on both sides of the airbag, and second winding seats are fixed at both ends of the shaft located inside the first winding seat. An air tube is wound on the winding shaft of the second winding seat, and the air tube is fixedly connected to the connector of each airbag in the same straight line.

[0011] Furthermore, the inflation assembly also includes a mounting plate. One end of the air cylinder is fixed to the mounting plate, and the driving pulley and driven pulley of the air cylinder's drive belt are rotatably mounted on the mounting plate via bearings. The shaft slides out of the mounting plate, and the mounting plate is fixed to the bottom surface of the boat. A fixing plate is fixed to the shaft at the position corresponding to the driving pulley, and an electric push rod is fixed to the surface of the fixing plate. An insertion hole is opened on the surface of the driving pulley corresponding to the electric push rod, and the extended end of the electric push rod can be inserted into the insertion hole.

[0012] Furthermore, a screw is rotatably mounted inside the air cylinder via a bearing, and a screw sleeve is fixed to the position of the push plate corresponding to the screw. The screw sleeve is threaded onto the surface of the screw, and one end of the screw is fixedly connected to the driven pulley.

[0013] Furthermore, a connecting valve is fixed at the bottom of the air cylinder, and the connecting valve is connected to the air pipe on the corresponding side. The outer surface of the air pipe is encapsulated with soft plastic.

[0014] The beneficial effects of this invention are: 1. In this invention, each airbag is connected to an air tube via a connector. There are two sets of air cylinders with air inlets facing opposite directions. Air is injected and drawn from both sides of the airbag to improve the efficiency of airbag expansion or contraction. The purpose of encapsulating the air tube with soft plastic is to protect the air tube while avoiding the problem of air tubes squeezing each other and causing air pressure obstruction, thus maintaining the smooth flow of gas inside the cylinder.

[0015] 2. In this invention, when the extended end of the electric push rod is inserted into the insertion hole of the drive pulley, the rotation of the shaft driven by the drive motor can simultaneously drive the drive pulley to rotate. Through the transmission of the belt, the driven pulley drives the screw to rotate. The push plate slides along the inside of the air cylinder through the threaded engagement of the screw sleeve and the screw, pushing out the gas inside the air cylinder and delivering it to the air bladder through the air pipe. It can also be used to extract the gas from the air bladder and store it inside the air cylinder, making it convenient for the air bladder to be stored inside the storage frame. When the electric push rod is disconnected from the drive pulley, the rotation of the shaft will not drive the screw to rotate. At this time, the air injection component will not continue to inject gas into the air bladder. This state can be used to adjust the height of the vessel in shallow or deep water areas, or under underground reefs, etc. It is not necessary to fully deploy and fill the air bladder with gas every time it is used, making it versatile in use.

[0016] 3. As the storage frame moves with the pull rope, the present invention uses a sweeping frame and brush inside the rotating frame to scrape and clean the side wall of the boat bottom, thereby preventing algae and shells from accumulating on the side of the boat bottom and corroding it.

[0017] 4. The present invention has a first winding seat installed inside the shaft and the anti-collision post, and both are driven by a waterproof motor. The two are driven in opposite ways, one unwinding the pull rope and the other winding it up. Then, through the connection between the fixing ring and the pull rope, the storage frame can be driven to slide along the surface of the guide rail, so that the airbag can be deployed and the side of the bottom of the boat can be scraped and cleaned at the same time.

[0018] 5. Compared with the prior art, the present invention, through the cooperation of the drive component and the anti-collision component, can prevent the airbag from being deployed and inflated, thereby providing anti-collision protection for both sides of the vessel. This function can be turned on when in use and turned off when not in use, without affecting the normal navigation and size of the vessel. When the anti-collision component is deployed, it will also clean the sloping surface of the vessel, replacing manual cleaning of algae and shellfish. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a ship hull protection device according to the present invention; Figure 2 This is a schematic diagram of the front structure of the bottom of a ship's hull protection device according to the present invention; Figure 3 This is a schematic diagram showing the installation position of the drive assembly of a ship hull protection device according to the present invention. Figure 4 This is a schematic diagram of the drive assembly structure of a ship hull protection device according to the present invention; Figure 5 This is a schematic diagram showing the connection between the drive assembly and the inflation assembly of a ship hull protection device according to the present invention; Figure 6 This is a schematic diagram of the internal structure of the air-filled clamping assembly of a ship hull protection device according to the present invention. Figure 7 This is a schematic diagram showing the connection between the anti-collision component and the drive component of a ship hull protection device according to the present invention; Figure 8 This is a schematic diagram of the anti-collision component structure of a ship hull protection device according to the present invention.

[0020] In the diagram: 1. Bottom of the boat; 11. Guide rail; 2. Anti-collision post; 21. Storage slot; 3. Drive assembly; 31. Shaft; 32. Mounting base; 33. Motor; 34. First winding seat; 35. Second winding seat; 36. Pull rope; 37. Air pipe; 38. Connecting valve; 4. Inflation assembly; 41. Air cylinder; 42. Mounting plate; 43. Driven pulley; 44. Drive pulley; 45. Electric push rod; 46. Fixing plate; 47. Screw; 48. Push plate; 49. Screw sleeve; 5. Anti-collision assembly; 51. Storage frame; 52. Airbag; 53. Connector; 54. Fixing ring; 55. Winding shaft; 56. Brush; 57. Rotating frame; 58. Broom frame. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 8This invention provides a technical solution: a ship hull protection device, including a hull bottom 1, with a crash bar 2 fixed to the bottommost surface of the hull bottom 1. The crash bar 2 has a crash protection component 5 inside, which includes a storage frame 51. A winding shaft 55 is rotatably mounted inside the storage frame 51 via bearings and a torsion spring. Multiple airbags 52 are wound onto the winding shaft 55, with adjacent airbags 52 fixedly connected. The bottommost airbag 52 of the storage frame 51 is fixed to the interior of the crash bar 2. The top of the sloping surface of the hull 1 is provided with a drive assembly 3. The drive assembly 3 includes a shaft 31, with pull ropes 36 wound at both ends of the shaft 31. Both ends of the storage frame 51 are connected to the pull ropes 36. An inflation assembly 4 is provided at the top of the middle position of the shaft 31. The inflation assembly 4 includes air cylinders 41. There are two sets of air cylinders 41, with the outlet ends of the two sets of air cylinders 41 facing opposite directions. A push plate 48 is slidably connected inside the air cylinder 41. A transmission belt is installed at the outer end of the air cylinder 41. The transmission of the air cylinder 41... The drive belt includes a driving pulley 44 and a driven pulley 43. The driving pulley 44 is sleeved on the shaft 31, and the driven pulley 43 is rotatably mounted on the outer surface of the air cylinder 41 via a bearing. Guide rails 11 are fixed at equal intervals on the inclined surface of the hull bottom 1, and the storage frame 51 slides along the guide rails 11. When using the device, the anti-collision posts 2, anti-collision components 5, drive components 3, and inflation components 4 are installed on both sides of the hull bottom 1. When the vessel approaches the shore or travels to an area with reefs, the drive components 3 move the storage frame 51 along the inclined surface of the hull bottom 1. The airbag 52 is deployed by moving upwards and inflated by the inflation component 4. It works in conjunction with the anti-collision post 2 to protect the vessel from collisions. When not in use, the gas inside the airbag 52 is extracted and the airbag 52 is rolled up. The movement of the storage frame 51 will scrape and clean the sloping surface of the bottom 1 of the ship, preventing algae and shells from adhering to the surface of the bottom 1. This solution mainly involves the technical fields of casting or welding equipment for light alloy motor housings, welding equipment for subsea pipelines, and manufacturing of marine engineering equipment such as drilling ships (barges) and semi-submersible transport vessels.

[0023] In this embodiment, the lower end of the storage frame 51 is provided with an opening parallel to the side of the bottom of the ship 1, and the top of the anti-collision post 2 is provided with a storage groove 21 parallel to the inclined surface of the bottom of the ship 1. The storage frame 51 can enter the storage groove 21 and can be stored inside the storage groove 21 of the anti-collision post 2, thereby reducing the size of the device and avoiding excessive size affecting the normal operation of the ship.

[0024] In this embodiment, the drive assembly 3 further includes a mounting base 32. The two ends of the shaft 31 are rotatably mounted with mounting bases 32 via bearings. The mounting bases 32 are fixed to both sides of the bottom of the boat 1. First winding seats 34 are fixed at the same straight line position at both ends of the shaft 31 and the storage groove 21. The two ends of the pull rope 36 are respectively wound inside the first winding seats 34, which are aligned with the shaft 31 and the storage groove 21. A motor 33 is fixed to the outer end of the first winding seat 34. The output end of the motor 33 is fixedly connected to the winding shaft 55 of the first winding seat 34. The outer surface of the motor 33... The surface is provided with a waterproof seal. The anti-collision component 5 also includes a fixing ring 54. The two sides of the storage frame 51 are fixed with fixing rings 54, and the fixing rings 54 are fixedly sleeved on the surface of the pull rope 36. The shaft 31 and the anti-collision post 2 are both equipped with a first winding seat 34, and both are driven by a waterproof motor 33. The driving methods of the two are opposite, one unwinds the pull rope 36 and the other winds it up. Then, through the connection between the fixing ring 54 and the pull rope 36, the storage frame 51 can be driven to slide along the surface of the guide rail 11, so that the airbag 52 can be deployed and the side of the bottom of the boat 1 can be scraped and cleaned at the same time.

[0025] In this embodiment, a rotating frame 57 is fixed at equal intervals on the top of the storage frame 51, and a sweeping frame 58 is rotatably installed inside the rotating frame 57 via bearings. The sweeping frame 58 consists of three rubber plates. A brush 56 is fixed on the surface of the storage frame 51 corresponding to the inclined surface of the bottom 1, and the brush 56 slides in contact with the inclined surface of the bottom 1. When the storage frame 51 moves with the pull rope 36, the sweeping frame 58 and the brush 56 inside the rotating frame 57 scrape and clean the side wall of the bottom 1, thereby preventing algae and shells from accumulating on the side of the bottom 1 and corroding the bottom 1.

[0026] In this embodiment, connectors 53 are fixed to both sides of the airbag 52. Second take-up seats 35 are fixed to both ends of the shaft 31 located inside the first take-up seat 34. An air tube 37 is wound onto the take-up shaft 55 of the second take-up seat 35. The air tube 37 is fixedly connected to the connectors 53 of each airbag 52 in a straight line. The inflation assembly 4 also includes a mounting plate 42. One end of the air cylinder 41 is fixed to the mounting plate 42. The drive pulley 44 and driven pulley 43 of the air cylinder 41 are rotatably mounted on the mounting plate 42 via bearings. The shaft 31 slides through the mounting plate 42, and the mounting plate 42 is fixed to the surface of the bottom of the boat 1. A fixing plate 46 is fixed to the position of the shaft 31 corresponding to the drive pulley 44, and a fixing plate 46 is fixed to the surface of the fixing plate 46. An electric push rod 45 has an insertion hole on the surface of the driving pulley 44 corresponding to the electric push rod 45, and the extended end of the electric push rod 45 can be inserted into the insertion hole. A screw 47 is rotatably mounted inside the air cylinder 41 via a bearing, and a threaded sleeve 49 is fixed to the position of the push plate 48 corresponding to the screw 47. The threaded sleeve 49 is threaded onto the surface of the screw 47. One end of the screw 47 is fixedly connected to the driven pulley 43. A connecting valve 38 is fixed to the bottom of the air cylinder 41 and is connected to an air pipe 37 on the corresponding side. The outer surface of the air pipe 37 is encapsulated with soft plastic. Each air bladder 52 is connected to the air pipe 37 via a connector 53. There are two sets of air cylinders 41 with air inlets in opposite directions, allowing air to be injected into the air bladders 52 from both sides. To improve the efficiency of airbag 52 expansion or contraction, the air cylinder 41 is connected to the air pipe 37 via a connecting valve 38. When the storage frame 51 moves from the side of the anti-collision post 2 towards the upper end of the bottom 1, the airbag 52 components are unwound and deployed. At the same time, the rotation of the shaft 31 drives the rotation of the second winding seat 35. In essence, winding seats for winding the air pipe 37 are also installed at both ends of the winding shaft 55 of the storage frame 51. This part is for individually winding the air pipe 37 that connects to the connector 53 of each airbag 52. It is connected to the air pipe 37 of the second winding seat 35 on the shaft 31. In this way, when the storage frame 51 moves, the second winding seat 35 on the shaft 31 rotates, and the winding or unwinding of the air pipe 37 is only to maintain the connection with the air pipe 37 inside the storage frame 51. The airbag 52 unfolds and retracts by the winding seats at both ends of the winding shaft 55 of the storage frame 51 winding and unwinding the air tube 37 of the connector 53. This process is controlled by the winding shaft 55 and the torsion spring, and is synchronized with the airbag 52. When the extended end of the electric push rod 45 is inserted into the insertion hole of the drive pulley 44, the drive motor 33 drives the shaft 31 to rotate, which in turn drives the drive pulley 44 to rotate. Through the belt drive, the driven pulley 43 drives the screw 47 to rotate. The push plate 48 slides along the inside of the air cylinder 41 through the threaded engagement of the screw 47 with the screw sleeve 49, pushing out the gas inside the air cylinder 41 and delivering it to the airbag 52 through the air tube 37. The gas inside the airbag 52 can also be extracted in this way and stored inside the air cylinder 41.The airbag 52 is conveniently stored inside the storage frame 51. When the electric push rod 45 is disengaged from the drive pulley 44, the rotation of the shaft 31 will not drive the screw 47 to rotate. At this time, the inflation assembly will not continue to inject gas into the airbag 52. This state can be used to adjust the airbag 52 when the vessel is in shallow or deep water, or when encountering underground reefs or other different depths. It is not necessary to fully deploy and inflate the airbag 52 every time it is used. The purpose of encapsulating the air tube 37 with soft plastic is to protect the air tube 37 and prevent the air tubes from being squeezed together, thus avoiding inflation obstruction and maintaining smooth gas flow inside the cylinder.

[0027] When using the device, the anti-collision posts 2, anti-collision components 5, drive components 3, and inflation components 4 are installed on both sides of the bottom of the boat 1. The air cylinder 41 is connected to the air pipe 37 through the connecting valve 38. When the storage frame 51 moves from the side of the anti-collision post 2 towards the upper end of the bottom of the boat 1, the airbag 52 will be unrolled and unfolded. At the same time, the rotation of the shaft 31 will drive the rotation of the second winding seat 35. In fact, winding seats for winding the air pipe 37 are also installed at both ends of the winding shaft 55 of the storage frame 51. This part is for individually winding the air pipe 37 that connects to the connector 53 of each airbag 52, and then connecting it to the second winding seat on the shaft 31. The air tube 37 is connected to the storage frame 51. When the storage frame 51 moves, the second winding seat 35 on the shaft 31 rotates, winding or unwinding the air tube 37 to maintain its connection with the air tube 37 inside the storage frame 51. The deployment and retraction of the airbag 52 are controlled by the winding seats at both ends of the winding shaft 55 of the storage frame 51, which wind and unwind the air tube 37 of the connector 53. This process is controlled by the winding shaft 55 and the torsion spring, and is synchronized with the airbag 52. When the extended end of the electric push rod 45 is inserted into the insertion hole of the drive pulley 44, the drive motor 33 drives the shaft 31. The rotation of the drive pulley 44 can simultaneously drive the drive pulley 43 to rotate. Through the belt drive, the driven pulley 43 drives the screw 47 to rotate. The push plate 48 slides along the inside of the air cylinder 41 through the threaded engagement of the screw sleeve 49 and the screw 47, pushing out the gas inside the air cylinder 41 and delivering it to the air bag 52 through the air pipe 37. Alternatively, the gas inside the air bag 52 can be extracted in this way and stored inside the air cylinder 41, making it convenient for the air bag 52 to be stored inside the storage frame 51. When the connection between the electric push rod 45 and the drive pulley 44 is disengaged, the rotation of the shaft 31 will no longer drive the screw 47 to rotate. At this time, air injection... The component will not continue to inject gas into the airbag 52. This state can be used to adjust the height of the vessel in shallow or deep water areas, or under underground reefs. It is not necessary to fully deploy and fill the airbag 52 with gas every time it is used. The deployed and inflated airbag 52 works with the anti-collision post 2 to protect the vessel from collisions. When not in use, the gas in the airbag 52 is extracted and the airbag 52 is rolled up. When the storage frame 51 moves with the pull rope 36, the sweeping frame 58 and brush 56 in the rotating frame 57 scrape and clean the side wall of the bottom 1, thereby preventing algae and shells from accumulating on the side of the bottom 1 and corroding the bottom 1.

[0028] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ship hull protection device, comprising a hull bottom (1), characterized in that: A crash barrier post (2) is fixed to the bottom surface of the hull (1). A crash barrier assembly (5) is provided inside the crash barrier post (2). The crash barrier assembly (5) includes a storage frame (51). A winding shaft (55) is rotatably mounted inside the storage frame (51) via bearings and a torsion spring. Multiple airbags (52) are wound on the winding shaft (55). Adjacent airbags (52) are fixedly connected. The airbag (52) at the bottom of the storage frame (51) is fixed to the inside of the crash barrier post (2). A drive assembly (3) is provided at the top of the sloping surface of the hull (1). The drive assembly (3) includes a shaft (31). Pull ropes (36) are wound at both ends of the shaft (31). The two ends of the storage frame (51) are connected to the pull ropes. (36) Connection, the top of the middle position of the shaft (31) is provided with an inflation assembly (4), the inflation assembly (4) includes an air cylinder (41), the air cylinder (41) is provided with two sets, the outlet ends of the two sets of air cylinders (41) are opposite, and a push plate (48) is slidably connected inside the air cylinder (41). A transmission belt is installed at the outer end of the air cylinder (41), the transmission belt of the air cylinder (41) includes a driving pulley (44) and a driven pulley (43). The driving pulley (44) is sleeved on the shaft (31), and the driven pulley (43) is rotatably installed on the outer surface of the air cylinder (41) through a bearing. Guide rails (11) are fixed at equal intervals on the inclined surface of the bottom (1), and the storage frame (51) slides along the guide rails (11).

2. A ship hull protection device according to claim 1, characterized in that: The storage frame (51) has an opening at the bottom parallel to the side of the bottom (1), and the top of the anti-collision post (2) has a storage groove (21) parallel to the slope of the bottom (1), and the storage frame (51) can enter the storage groove (21).

3. A ship hull protection device according to claim 2, characterized in that: The drive assembly (3) also includes a mounting base (32). The two ends of the shaft (31) are rotatably mounted with the mounting base (32) via bearings. The mounting base (32) is fixed on both sides of the bottom of the boat (1). The two ends of the shaft (31) and the storage groove (21) are both fixed with a first winding seat (34) at the same straight line position. The two ends of the pull rope (36) are respectively wound inside the first winding seat (34) at the same straight line between the shaft (31) and the storage groove (21).

4. A ship hull protection device according to claim 3, characterized in that: A motor (33) is fixed to the outer end of the first take-up holder (34). The output end of the motor (33) is fixedly connected to the take-up shaft (55) of the first take-up holder (34). The outer surface of the motor (33) is provided with a waterproof seal.

5. A ship hull protection device according to claim 4, characterized in that: The anti-collision component (5) also includes a fixing ring (54), which is fixed on both sides of the storage frame (51) and is fixedly sleeved on the surface of the pull rope (36).

6. A ship hull protection device according to claim 5, characterized in that: The storage frame (51) is fixed with rotating frames (57) at equal intervals on the top, and a sweeping frame (58) is installed inside the rotating frame (57) by rotating bearings. The sweeping frame (58) is composed of three rubber plates. A brush (56) is fixed on the surface of the storage frame (51) corresponding to the inclined surface of the bottom (1), and the brush (56) slides in contact with the inclined surface of the bottom (1).

7. A ship hull protection device according to claim 5, characterized in that: Connectors (53) are fixed on both sides of the airbag (52). The shaft (31) is located inside the first winding seat (34) and the two ends are fixed with second winding seats (35). An air tube (37) is wound on the winding shaft (55) of the second winding seat (35). The air tube (37) is fixedly connected to the connector (53) of each airbag (52) in the same straight line.

8. A ship hull protection device according to claim 1, characterized in that: The inflation assembly (4) also includes a mounting plate (42). One end of the air cylinder (41) is fixed to the mounting plate (42). The drive pulley (44) and driven pulley (43) of the air cylinder (41) are rotatably mounted on the mounting plate (42) through bearings. The shaft (31) slides out of the mounting plate (42). The mounting plate (42) is fixed on the surface of the bottom (1). The shaft (31) is fixed with a fixing plate (46) at the position corresponding to the drive pulley (44). An electric push rod (45) is fixed on the surface of the fixing plate (46). An insertion hole is opened on the surface of the drive pulley (44) corresponding to the electric push rod (45). The extended end of the electric push rod (45) can be inserted into the insertion hole.

9. A ship hull protection device according to claim 8, characterized in that: Inside the air cylinder (41), a screw (47) is rotatably mounted via a bearing, and a screw sleeve (49) is fixed on the push plate (48) at the position corresponding to the screw (47). The screw sleeve (49) is threaded onto the surface of the screw (47), and one end of the screw (47) is fixedly connected to the driven pulley (43).

10. A ship hull protection device according to claim 9, characterized in that: The bottom of the air cylinder (41) is fixed with a connecting valve (38), and the connecting valve (38) is connected to the air pipe (37) on the corresponding side. The outer surface of the air pipe (37) is provided with a soft plastic encapsulation.

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