Underwater cleaning equipment for yachts

Abstract

The present invention discloses an underwater yacht cleaning device, which belongs to the field of yacht cleaning, and includes a port, a first servo motor is fixedly connected to one side of the bottom of the port, a fixed plate is fixedly connected to the other side of the bottom of the port, a threaded rod is fixedly connected to the output end of the first servo motor, a moving block is threadedly connected to the outer surface of the threaded rod, side plates are fixedly connected to both sides of the port, and a second electric push rod is fixedly connected to one side of the side plate. The cleaning plate can slide back and forth on the arc-shaped slide rail, and then the first servo motor and the threaded rod drive the moving block to slide back and forth inside the port, so that the cleaning plate slides left and right and moves back and forth at the same time, effectively increasing the cleaning area of ​​the cleaning plate, so that the bottom of the yacht can be fully cleaned, ensuring that every area of ​​the bottom of the yacht can be cleaned, and effectively improving the efficiency of yacht cleaning.

Description

Technical Field

[0001] The invention relates to the field of yacht cleaning, and more particularly to an underwater yacht cleaning device. Background Art

[0002] Yachts are high-end durable consumer goods for water entertainment. They integrate functions such as navigation, sports, entertainment, and leisure, and meet the needs of individuals and families to enjoy life. As they are water products, yachts will be on the water for a long time. The bottom of the boat that has been immersed in water for a long time is prone to the attachment of shellfish and algae that are difficult to remove, and causes more rust and rust spots on the bottom of the ship's hull and other parts, increasing the resistance of the ship. The bottom of the boat must be cleaned regularly.

[0003] In order to solve the above problems, the prior art proposes relevant solutions. For example, a Chinese patent with authorization announcement number CN 111776160B discloses an underwater yacht cleaning device, which cleans the yacht floor by moving two cleaning blocks hinged on a cleaning plate forward, backward, and up and down at the bottom of the yacht. However, in the actual process of cleaning the yacht, since the cleaning blocks are always in an inclined hinged state, there will be a part of the cleaning blocks that cannot contact the bottom of the yacht, and the area cannot be cleaned, thereby affecting the cleaning effect of the entire yacht. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide an underwater yacht cleaning device.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A yacht underwater cleaning device, comprising a port, a first servo motor is fixedly connected to one side of the bottom of the port, a fixed plate is fixedly connected to the other side of the bottom of the port, a threaded rod is fixedly connected to the output end of the first servo motor, a moving block is threadedly connected to the outer surface of the threaded rod, side plates are fixedly connected to both sides of the port, a second electric push rod is fixedly connected to one side of the side plate, a clamping plate is fixedly connected to the output end of the second electric push rod, and a displacement component for all-round cleaning of the lower surface of the yacht is connected to the upper surface of the moving block;

[0007] The displacement assembly includes an arc-shaped slide rail fixed on the upper surface of the moving block, a first groove is provided on both sides of the arc-shaped slide rail, a second groove is provided on the inner surface of the arc-shaped slide rail, a driving component is slidably connected to the outer surface of the second groove, the driving component is connected to a mounting plate, the upper surface of the mounting plate is connected to a fitting assembly, the fitting assembly is connected to a driving motor, the output end of the driving motor is fixedly connected to a rotating sleeve, and the outer surface of the rotating sleeve is fixedly connected to a cleaning plate.

[0008] Further, the driving component includes a U-shaped plate sleeved on the outer surface of the arc-shaped slide rail and a rack fixed on one side of the inner surface of the second groove. A support roller is rotatably connected to the inner surface of the U-shaped plate. An installation plate is fixedly connected to the upper surface of the U-shaped plate. A second servo motor is fixedly connected to the lower surface of the installation plate. The output end of the second servo motor is fixedly connected with a gear, and the gear meshes with the rack. The support roller slides inside the first groove, and the second servo motor is fixedly connected with the U-shaped plate.

[0009] Further, the fitting component includes support slide rods fixed at the four corners of the upper surface of the installation plate. Springs are sleeved on the outer surfaces of the support slide rods, and a movable plate is sleeved on the outer surfaces of the four support slide rods together.

[0010] Further, the driving motor is located on the lower surface of the movable plate. The rotating sleeve penetrates through the inside of the movable plate. An auxiliary cleaning component is connected to the upper surface of the movable plate. A limiting plate is fixedly connected to the top of the support slide rod, and scraping components are fixedly connected to both sides of the movable plate.

[0011] Further, the auxiliary cleaning component includes an elliptical guide rail fixed on the upper surface of the movable plate and four slots opened on the outer surface of the cleaning plate. A secondary cleaning brush plate is slidably connected inside the slot. A connecting rod is fixedly connected to the lower surface of the secondary cleaning brush plate. A connecting plate is fixedly connected to the bottom of the connecting rod, and a convex rod is fixedly connected to the top of the connecting plate.

[0012] Further, the top of the convex rod extends into the inside of the elliptical guide rail and is slidably adapted to each other, and the connecting rod is located inside the elliptical guide rail.

[0013] Further, the scraping component includes first electric push rods fixed on both sides of the movable plate and four first through slots opened inside the cleaning plate. The output end of the first electric push rod is fixedly connected with an L-shaped plate. A ring is sleeved on the outer surface of the L-shaped plate. A connecting groove is opened on the outer surface of the ring. Four crushing knives are fixedly connected to the top of the ring, and a limiting component is connected to the inner surface of the ring.

[0014] Further, the positions of the crushing knives correspond to the first through slots one by one. The crushing knives are located inside the first through slots and are adapted, and the L-shaped plate slides inside the connecting groove.

[0015] Further, the limiting component includes two second through slots opened on the outer surface of the rotating sleeve. A transmission rod is slidably connected inside the second through slot. A telescopic shaft is fixedly connected to the upper surface of the transmission rod. A ball is rotatably connected to the top of the telescopic shaft. Both sides of the transmission rod are fixedly connected with the ring.

[0016] Furthermore, the transmission rod passes through two second through grooves, the telescopic shaft is located inside the rotating sleeve and slides, and the horizontal height of the ball is higher than the top of the crushing knife.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This solution is provided with a displacement component to realize the back and forth sliding of the cleaning plate on the arc-shaped slide rail, and then cooperates with the first servo motor and the threaded rod to drive the moving block to slide back and forth inside the port, so that the cleaning plate slides left and right and moves back and forth at the same time, effectively increasing the cleaning area of ​​the cleaning plate, so that the bottom of the yacht can be fully cleaned, ensuring that every area of ​​the bottom of the yacht can be cleaned, and effectively improving the efficiency of yacht cleaning.

[0019] 2. This solution is provided with a fitting component. When the cleaning plate gradually separates from the yacht, the cleaning plate is always in contact with the surface of the yacht under the action of the spring. When the cleaning plate gradually approaches the yacht, the movable plate is pushed to slide on the outer side of the supporting slide rod to squeeze and contract the spring. At the same time, the elastic force of the spring is finally applied to the surface of the cleaning plate and the yacht, which can improve the cleaning effect.

[0020] 3. This solution is equipped with an auxiliary cleaning component. When the cleaning plate rotates at high speed, the auxiliary cleaning brush plate moves in a circular motion and reciprocates in a horizontal direction at the same time. Compared with the traditional back and forth wiping method, it can wipe and clean the moss, algae and other stains on the bottom of the yacht more thoroughly and achieve a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0022] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0023] Figure 3 The displacement assembly structure of the present invention is schematically shown in FIG. Figure 1 ;

[0024] Figure 4 The displacement assembly structure of the present invention is schematically shown in FIG. Figure 2 ;

[0025] Figure 5 The auxiliary cleaning component structure of the present invention is schematically shown in FIG. Figure 1 ;

[0026] Figure 6 The auxiliary cleaning component structure of the present invention is schematically shown in FIG. Figure 2 ;

[0027] Figure 7It is a schematic diagram of the structure of the scraping component of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the limiting component of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Port; 2. First servo motor; 3. Threaded rod; 4. Side panel;

[0031] 5. displacement assembly; 51. arc-shaped slide rail; 52. first groove; 53. second groove; 54. second servo motor;

[0032] 55, fitting assembly; 551, supporting slide bar; 552, spring; 553, movable plate;

[0033] 554, auxiliary cleaning assembly; 5541, slot; 5542, auxiliary cleaning brush plate; 5543, connecting rod; 5544, elliptical guide rail; 5545, connecting plate; 5546, convex rod;

[0034] 56, mounting plate; 57, shaped plate; 58, supporting roller; 59, driving motor; 510, rotating sleeve; 511, cleaning plate; 512, rack; 513, gear;

[0035] 6. scraping assembly; 61. first through groove;

[0036] 62, limit assembly; 621, telescopic shaft; 622, second through slot; 623, ball bearing; 624, transmission rod;

[0037] 63. L-shaped plate; 64. circular ring; 65. connecting groove; 66. crushing knife; 67. first electric push rod;

[0038] 7. Second electric push rod; 8. Clamping plate; 9. Fixed plate; 10. Moving block. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 8, A yacht underwater cleaning device, including a port 1. On one side of the inner bottom of the port 1, a first servo motor 2 is fixedly connected. On the other side of the inner bottom of the port 1, a fixing plate 9 is fixedly connected. The output end of the first servo motor 2 is fixedly connected with a threaded rod 3. A moving block 10 is threadedly connected to the outer surface of the threaded rod 3. On both sides of the port 1, side plates 4 are fixedly connected. On one side of the side plate 4, a second electric push rod 7 is fixedly connected. The output end of the second electric push rod 7 is fixedly connected with a clamping plate 8. The upper surface of the moving block 10 is connected with a displacement component 5 for comprehensively cleaning the lower surface of the yacht.

[0041] As Figure 3 and Figure 4 shown, the displacement component 5 includes an arc-shaped slide rail 51 fixed on the upper surface of the moving block 10. On both sides of the arc-shaped slide rail 51, first grooves 52 are opened. On the inner surface of the arc-shaped slide rail 51, a second groove 53 is opened. A driving component is slidably connected to the outer surface of the second groove 53. The driving component is connected with a mounting plate 56. The upper surface of the mounting plate 56 is connected with a fitting component 55. A driving motor 59 is connected to the fitting component 55. The output end of the driving motor 59 is fixedly connected with a rotating sleeve 510. The outer surface of the rotating sleeve 510 is fixedly connected with a cleaning plate 511.

[0042] The driving component includes a U-shaped plate 57 sleeved on the outer surface of the arc-shaped slide rail 51, and a rack 512 fixed on one side of the inner surface of the second groove 53. A support roller 58 is rotatably connected to the inner surface of the U-shaped plate 57. The upper surface of the U-shaped plate 57 is fixedly connected with a mounting plate 56. The lower surface of the mounting plate 56 is fixedly connected with a second servo motor 54. The output end of the second servo motor 54 is fixedly connected with a gear 513. The gear 513 meshes with the rack 512. The support roller 58 is located inside the first groove 52 and slides. The second servo motor 54 is fixedly connected with the U-shaped plate 57.

[0043] When the yacht enters the interior of Port 1, the yacht can be fixed through the cooperation of the second electric push rod 7 and the clamping plate 8 to ensure stability during cleaning. The two first servo motors 2 drive the threaded rods 3 to rotate, and the two threaded rods 3 drive the moving blocks 10 to move downward inside Port 1 towards the yacht, so that the two cleaning plates 511 come into contact with the surface of the yacht. The drive motor 59 is turned on to drive the cleaning plate 511 to rotate at high speed through the rotating sleeve 510, and the cleaning plate 511 cleans the stains on the surface of the yacht. At the same time, the second servo motor 54 starts to work, driving the gear 513 to rotate. The gear 513 meshes with the rack 512, thereby driving the mounting plate 56 and the C-shaped plate 57 to slide on the surface of the arc-shaped slide rail 51. The gear 513 rotates forward and backward, driving the cleaning plate 511 to slide back and forth on the arc-shaped slide rail 51. Coupled with the action of the first servo motor 2 and the threaded rod 3, the moving block 10 slides back and forth inside Port 1, so that the cleaning plate 511 slides left and right and moves back and forth at the same time, effectively increasing the cleaning area of the cleaning plate 511, thereby enabling a comprehensive cleaning of the bottom of the yacht, ensuring that each area of the bottom surface of the yacht can be cleaned, and effectively improving the cleaning efficiency of the yacht.

[0044] As Figure 5 shown, the fitting assembly 55 includes support slide rods 551 fixed at the four corners of the upper surface of the mounting plate 56. A spring 552 is sleeved on the outer surface of the support slide rod 551, and a movable plate 553 is sleeved on the outer surfaces of the four support slide rods 551 together.

[0045] The drive motor 59 is located on the lower surface of the movable plate 553. The rotating sleeve 510 penetrates through the interior of the movable plate 553. An auxiliary cleaning assembly 554 is connected to the upper surface of the movable plate 553. A limit plate is fixedly connected to the top of the support slide rod 551, and scraping assemblies 6 are fixedly connected to both sides of the movable plate 553.

[0046] However, when the cleaning plate 511 moves on the arc-shaped slide rail 51, the curvature of the arc-shaped slide rail 51 and the curvature of the bottom surface of the yacht may not be the same, which will cause the cleaning plate 511 to gradually separate from or gradually approach the bottom surface of the yacht during the movement. If the cleaning plate 511 separates from the yacht, it cannot be cleaned. If the cleaning plate 511 approaches the yacht, it will get stuck, causing damage to the equipment.

[0047] By providing the fitting component 55, when the cleaning plate 511 moves along the arc-shaped slide rail 51, if the cleaning plate 511 gradually separates from the yacht, the compressed spring 552 will gradually release and expand, pushing the movable plate 553 as a whole to approach the bottom surface of the yacht, so that the cleaning plate 511 is always in contact with the surface of the yacht. When the cleaning plate 511 gradually approaches the yacht, the cleaning plate 511 pushes the movable plate 553 by rotating the sleeve 510, so that the movable plate 553 slides on the outer side of the supporting slide rod 551 to squeeze and contract the spring 552. At the same time, the elastic force of the spring 552 is finally applied to the surface of the cleaning plate 511 and the yacht, which can improve the cleaning effect.

[0048] like Figure 5 and Figure 6 As shown, the auxiliary cleaning assembly 554 includes an elliptical guide rail 5544 fixed on the upper surface of the movable plate 553 and four slots 5541 opened on the outer surface of the cleaning plate 511, the interior of the slot 5541 is slidably connected to an auxiliary cleaning brush plate 5542, the lower surface of the auxiliary cleaning brush plate 5542 is fixedly connected to a connecting rod 5543, the bottom of the connecting rod 5543 is fixedly connected to a connecting plate 5545, and the top of the connecting plate 5545 is fixedly connected to a protruding rod 5546.

[0049] The top of the protruding rod 5546 extends to the inside of the elliptical guide rail 5544 and slidably fits with each other, and the connecting rod 5543 is located inside the elliptical guide rail 5544.

[0050] Since the cleaning plate 511 rotates in the same direction, the cleaning effect will be poor. Therefore, when the cleaning plate 511 rotates, it drives the four auxiliary cleaning brush plates 5542 to rotate synchronously, thereby driving the connecting rod 5543, the connecting plate 5545 and the convex rod 5546 to rotate synchronously. The convex rod 5546 rotates inside the elliptical guide rail 5544. Since the elliptical guide rail 5544 is elliptical, the convex rod 5546 will continuously move away from and approach the rotating sleeve 510 when moving, and drive the auxiliary cleaning brush plates 5542 to continuously approach and move away from the rotating sleeve 510 through transmission, so that the auxiliary cleaning brush plates 5542 continuously rotate and reciprocate inside the slot 5541. When the cleaning plate 511 rotates at a high speed, the auxiliary cleaning brush plates 5542 move in a circular motion and simultaneously move reciprocatingly in a horizontal direction. Compared with the traditional back and forth wiping method, the moss, algae and other stains on the bottom of the yacht are wiped clean more thoroughly, and the cleaning effect is better.

[0051] like Figure 7 and Figure 8As shown, the scraping assembly 6 includes a first electric push rod 67 fixed on both sides of the movable plate 553 and four first through grooves 61 opened inside the cleaning plate 511. The output end of the first electric push rod 67 is fixedly connected to an L-shaped plate 63. The outer surface of the L-shaped plate 63 is sleeved with a circular ring 64. The outer surface of the circular ring 64 is provided with a connecting groove 65. Four crushing knives 66 are fixedly connected to the top of the circular ring 64. The inner surface of the circular ring 64 is connected to a limiting assembly 62.

[0052] The crushing blade 66 corresponds to the first through slot 61 in one-to-one position. The crushing blade 66 is located inside the first through slot 61 and fits in it. The L-shaped plate 63 is located inside the connecting slot 65 and slides therein.

[0053] When a yacht stays in the sea for a long time, barnacles attached to the bottom of the yacht cannot be completely eradicated by wiping with the cleaning plate 511. It is necessary to clean shellfish, barnacles and other shell organisms attached to the bottom of the yacht beforehand.

[0054] Open the first electric push rod 67 to push the ring 64 upward as a whole through the L-shaped plate 63. The ring 64 drives the four sets of crushing knives 66 to extend from the inside of the first through groove 61, so that the crushing knives 66 come into contact with the bottom surface of the yacht. The cleaning plate 511 is driven to rotate by the driving motor 59 and the rotating sleeve 510, and then the four crushing knives 66 are driven to rotate at high speed, so that the shellfish attached to the bottom surface of the yacht can be broken and scraped off, and then wiped and cleaned by the cleaning plate 511, thereby effectively ensuring that the shellfish on the bottom surface of the yacht are thoroughly removed, avoiding the obstruction of the cleaning plate 511 caused by the shellfish during the subsequent cleaning.

[0055] like Figure 8 As shown, the limiting assembly 62 includes two second through grooves 622 opened on the outer surface of the rotating sleeve 510, and the inside of the second through grooves 622 is slidably connected with a transmission rod 624, the upper surface of the transmission rod 624 is fixedly connected with a telescopic shaft 621, the top of the telescopic shaft 621 is rotatably connected with a ball 623, and the two sides of the transmission rod 624 are fixedly connected to the ring 64.

[0056] The transmission rod 624 passes through the two second through slots 622 , the telescopic shaft 621 is located inside the rotating sleeve 510 and slides, and the horizontal height of the ball 623 is higher than the top of the crushing knife 66 .

[0057] In practice, the rotation of the crushing blade 66 will damage the paint surface of the yacht, causing the yacht to corrode and rust faster, thus reducing the service life of the yacht.

[0058] When the first electric push rod 67 drives the ring 64 to move upward through the L-shaped plate 63, it simultaneously drives the transmission rod 624 to move upward inside the second through groove 622, driving the telescopic shaft 621 to move out of the inside of the rotating sleeve 510. The telescopic shaft 621 drives the ball 623 to first contact the surface of the yacht, creating a slight gap between the crushing knife 66 and the yacht. Therefore, when the crushing knife 66 is working, it will only crush the shellfish, avoiding direct damage to the surface of the yacht by the crushing knife 66.

[0059] Usage method: First, through the cooperation between the gear 513 and the rack 512, the cleaning plate 511 slides along the arc-shaped slide rail 51 through the C-shaped plate 57, and the threaded rod 3 and the first servo motor 2 cooperate to drive the moving block 10 to move back and forth, thereby increasing the cleaning area of the cleaning plate 511. Through the cooperation of the components of the fitting assembly 55, it can be ensured that the cleaning plate 511 always contacts the surface of the yacht during movement, avoiding the phenomenon of the cleaning plate 511 getting stuck. At the same time, while the auxiliary cleaning brush plate 5542 rotates with the cleaning plate 511, it can move back and forth left and right under the cooperation of the elliptical guide rail 5544 and the convex rod 5546, greatly improving the cleaning effect.

[0060] Then, the crushing knife 66 can break and remove the shellfish barnacles attached to the surface of the yacht, avoiding obstacles during subsequent cleaning by the cleaning plate 511 and ensuring thorough cleaning. At the same time, under the action of the ball 623, the ball 623 first contacts the yacht, preventing the crushing knife 66 from directly contacting the yacht and preventing the surface of the yacht from being scratched by the crushing knife 66.

[0061] The above is only a preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A yacht underwater cleaning device, comprising a port (1), a first servo motor (2) is fixedly connected to one side of the bottom of the port (1), a fixing plate (9) is fixedly connected to the other side of the bottom of the port (1), a threaded rod (3) is fixedly connected to the output end of the first servo motor (2), a moving block (10) is threadedly connected to the outer surface of the threaded rod (3), side plates (4) are fixedly connected to both sides of the port (1), a second electric push rod (7) is fixedly connected to one side of the side plate (4), and a clamping plate (8) is fixedly connected to the output end of the second electric push rod (7); Features: The upper surface of the moving block (10) is connected with a displacement component (5) for cleaning the lower surface of the yacht in all directions; The displacement assembly (5) comprises an arc-shaped slide rail (51) fixed on the upper surface of the moving block (10), first grooves (52) are provided on both sides of the arc-shaped slide rail (51), a second groove (53) is provided on the inner surface of the arc-shaped slide rail (51), a driving component is slidably connected to the outer surface of the second groove (53), the driving component is connected to a mounting plate (56), a fitting assembly (55) is connected to the upper surface of the mounting plate (56), a driving motor (59) is connected to the fitting assembly (55), an output end of the driving motor (59) is fixedly connected to a rotating sleeve (510), and the outer surface of the rotating sleeve (510) is fixedly connected to a cleaning plate (511); The fitting assembly (55) comprises support slide bars (551) fixed at four corners of the upper surface of the mounting plate (56), the outer surface of the support slide bars (551) is sleeved with springs (552), and the outer surfaces of the four support slide bars (551) are sleeved with a movable plate (553); The driving motor (59) is located on the lower surface of the movable plate (553), the rotating sleeve (510) passes through the interior of the movable plate (553), the upper surface of the movable plate (553) is connected to an auxiliary cleaning component (554), the top of the supporting slide bar (551) is fixedly connected to a limiting plate, and both sides of the movable plate (553) are fixedly connected to scraping components (6); The auxiliary cleaning assembly (554) comprises an elliptical guide rail (5544) fixed on the upper surface of the movable plate (553) and four slots (5541) formed on the outer surface of the cleaning plate (511); an auxiliary cleaning brush plate (5542) is slidably connected inside the slot (5541); a connecting rod (5543) is fixedly connected to the lower surface of the auxiliary cleaning brush plate (5542); a connecting plate (5545) is fixedly connected to the bottom of the connecting rod (5543); and a protruding rod (5546) is fixedly connected to the top of the connecting plate (5545); The top of the protruding rod (5546) extends to the inside of the elliptical guide rail (5544) and is slidably adapted to each other, and the connecting rod (5543) is located inside the elliptical guide rail (5544); The scraping assembly (6) includes a first electric push rod (67) fixed on both sides of the movable plate (553) and four first through grooves (61) formed inside the cleaning plate (511). The output end of the first electric push rod (67) is fixedly connected to an L-shaped plate (63). A circular ring (64) is sleeved on the outer surface of the L-shaped plate (63). A connection groove (65) is formed on the outer surface of the circular ring (64). Four crushing knives (66) are fixedly connected to the top of the circular ring (64). A limiting component (62) is connected to the inner surface of the circular ring (64). The positions of the crushing knives (66) correspond to those of the first through grooves (61) one by one. The crushing knives (66) are located inside the first through grooves (61) and are adapted to them. The L-shaped plate (63) slides inside the connection groove (65).

2. The yacht underwater cleaning device according to claim 1, characterized in that: The driving component includes a U-shaped plate (57) sleeved on the outer surface of the arc-shaped slide rail (51), and a rack (512) fixed on one side of the inner surface of the second groove (53). A support roller (58) is rotatably connected to the inner surface of the U-shaped plate (57). An installation plate (56) is fixedly connected to the upper surface of the U-shaped plate (57). A second servo motor (54) is fixedly connected to the lower surface of the installation plate (56). The output end of the second servo motor (54) is fixedly connected to a gear (513). The gear (513) meshes with the rack (512). The support roller (58) slides inside the first groove (52). The second servo motor (54) is fixedly connected to the U-shaped plate (57).

3. The yacht underwater cleaning device according to claim 2, characterized in that: The limiting component (62) includes two second through grooves (622) formed on the outer surface of the rotating sleeve (510). A transmission rod (624) is slidably connected inside the second through grooves (622). A telescopic shaft (621) is fixedly connected to the upper surface of the transmission rod (624). A ball (623) is rotatably connected to the top of the telescopic shaft (621). Both sides of the transmission rod (624) are fixedly connected to the circular ring (64).

4. The yacht underwater cleaning device according to claim 3, characterized in that: The transmission rod (624) penetrates through the two second through grooves (622). The telescopic shaft (621) slides inside the rotating sleeve (510). The horizontal height of the ball (623) is higher than the top of the crushing knife (66).

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