A polishing device for ship maintenance

Abstract

The present application relates to the technical field of polishing device, specifically relates to a kind of polishing device for ship maintenance, including maintenance seat, the top of maintenance seat both sides is provided with hydraulic rod, the telescopic end of hydraulic rod is provided with top seat, the top of maintenance seat is provided with the placement tray for placing cylinder sleeve, the inside of placement tray is provided with the limiting assembly for limiting cylinder sleeve, the top of top seat is provided with driving motor, the output shaft of driving motor is provided with suction frame, the inside of suction frame is provided with the suction assembly for suctioning debris, the bottom of suction frame is provided with rotating disc, further drive outer rotating lever and driving wheel rotation by the rotation of circular gear, then drive inner rotating lever rotation by driving wheel cooperation driven wheel work, while outer polishing roller outside outer rotating lever and inner polishing roller outside inner rotating lever also rotate, that is, outer polishing roller and inner polishing roller move around cylinder sleeve, while, the outer wall and inner wall of cylinder sleeve can also be polished simultaneously, improve the overall repair polishing efficiency.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, specifically to a polishing equipment for ship repair. Background Technology

[0002] Ships are primarily powered by diesel engines. After a period of use, the cylinder liners of diesel engines will develop stepped wear at the dead center of the first piston ring. Given the high cost of cylinder liners for large ship diesel engines, maintenance personnel must perform regular inspections and grinding in order to save costs and extend their service life.

[0003] Chinese Patent Publication No. CN215201276U discloses a cylinder liner step grinding device for ship repair. It includes a vertically arranged sleeve, a support ring fitted on the upper part of the sleeve, and several support frames evenly and horizontally arranged along the circumference of the outer wall of the support ring. A centering mechanism is provided at the bottom of the sleeve, and a cylinder is vertically positioned at the center of the bottom of the centering mechanism. The axis of the cylinder piston rod is collinear with the axis of the sleeve. A support rod is hinged to the bottom of the cylinder piston rod, and a steering mechanism is provided on the support rod. An elongated hole is vertically provided at the outer end of the support rod along its length. This device can precisely achieve the alignment process with the cylinder liner, ensuring that the pneumatic grinder always rotates along the circumference of the inner wall of the cylinder liner, resulting in consistent groove depth. The device is firmly fixed, providing stable support for the pneumatic grinder during grinding and preventing it from deviating from its original rotation path, thus solving the problems existing in the prior art.

[0004] However, the aforementioned device can only grind the inner wall of the cylinder liner, not the outer wall. This can easily lead to inconsistent wear between the inner and outer walls of the cylinder liner. If grinding of the outer wall of the cylinder liner is required, other equipment needs to be replaced, resulting in a reduction in overall grinding efficiency. Summary of the Invention

[0005] To address the aforementioned problems, a grinding device for ship repair is provided. By activating a hydraulic rod, the top seat moves downwards, simultaneously causing the inner and outer ring blocks on the outer wall of the mounting cylinder to move downwards as well. This moves the inner and outer ring blocks to the inside and outside of the cylinder liner, respectively. At this point, the inner grinding roller at the top of the inner ring block contacts the inner wall of the cylinder liner, while the outer grinding roller at the top of the outer ring block contacts the outer wall of the cylinder liner. Then, a drive motor is activated, rotating the adsorption frame and the turntable. Simultaneously, the rotation of the turntable also moves the mounting cylinder, the outer rotating rod, the inner ring block, and the outer ring block. When the rotating rod moves, its external sprocket also moves. The sprocket works in conjunction with the gear ring at the bottom of the top seat, allowing the sprocket to rotate while moving. The rotation of the sprocket further drives the outer rotating rod and the drive wheel to rotate. The drive wheel, in conjunction with the driven wheel, drives the inner rotating rod to rotate. At the same time, the outer grinding roller outside the outer rotating rod and the inner grinding roller outside the inner rotating rod also rotate. That is, while the outer grinding roller and the inner grinding roller move around the cylinder liner, they can also grind the outer and inner walls of the cylinder liner simultaneously, improving the overall repair and grinding efficiency.

[0006] To address the problems of existing technologies, this invention provides a grinding device for ship repair, comprising a repair base, hydraulic rods on both sides of the top of the repair base, a top seat at the telescopic end of the hydraulic rods, a placement plate for placing cylinder liners on the top of the repair base, a limiting component for limiting the cylinder liners inside the placement plate, a drive motor on the top of the top seat, an adsorption frame on the output shaft of the drive motor, an adsorption component for adsorbing debris inside the adsorption frame, a turntable at the bottom of the adsorption frame, a mounting cylinder at the bottom of the turntable, an inner ring block outside the mounting cylinder, an inner rotating rod rotatably mounted on the top of the inner ring block, an inner grinding roller for grinding the inner wall of the cylinder liner outside the inner rotating rod, symmetrical connecting rods at the bottom of the turntable, an outer ring block at the bottom of the connecting rods, an outer rotating rod rotatably mounted on the top of the outer ring block, and an outer grinding roller for grinding the outer wall of the cylinder liner outside the outer rotating rod.

[0007] Preferably, the outer rotating rod is provided with a driving wheel and a spur gear on its exterior, and the inner rotating rod is provided with a driven wheel that meshes with the driving wheel on its exterior.

[0008] Preferably, the bottom of the top seat is provided with a toothed ring that meshes with a spur gear, the top of the outer rotating rod is rotatably provided with a roller, and the bottom of the top seat is provided with an annular groove for the roller to move.

[0009] Preferably, the limiting component includes multiple electric grippers disposed inside the placement plate, and one side of each electric gripper is provided with an anti-slip pad to prevent the cylinder liner from sliding.

[0010] Preferably, the adsorption assembly includes a filter box, a vacuum pump, and a conversion box disposed on the top of the turntable. The input end of the vacuum pump is connected to the interior of the filter box through a pipe, and the output end of the vacuum pump is connected to the interior of the conversion box through a pipe.

[0011] Preferably, one side of the filter box is connected to an h-shaped adsorption tube, and both sides of the h-shaped adsorption tube are connected to multiple adsorption nozzles for adsorbing debris.

[0012] Preferably, an impeller is rotatably mounted inside the conversion box, a first rotating rod is rotatably mounted at the bottom of the impeller, the bottom of the first rotating rod is rotatably connected to the top of the inner ring block, and a cleaning roller for cleaning debris from the inner wall of the cylinder liner is mounted outside the first rotating rod.

[0013] Preferably, a plurality of spring telescopic rods are provided on one inner wall of the filter box, and a filter plate for filtering debris is provided at the telescopic end of the spring telescopic rods.

[0014] Preferably, a second rotating rod is rotatably provided inside the filter box, the bottom of the second rotating rod is rotatably connected to the top of the turntable, and the outside of the second rotating rod is provided with extrusion protrusions for extruding the filter plate.

[0015] Preferably, a first synchronous pulley is provided on the outside of the first rotating rod, and a second synchronous pulley is provided on the outside of the second rotating rod. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt drive.

[0016] The advantages of this invention compared to the prior art are:

[0017] 1. By activating the hydraulic rod, the top seat moves downwards. Simultaneously, the inner and outer ring blocks on the outer wall of the mounting cylinder also move downwards, causing the inner and outer ring blocks to move to the inside and outside of the cylinder liner, respectively. At this point, the inner grinding roller at the top of the inner ring block will contact the inner wall of the cylinder liner, while the outer grinding roller at the top of the outer ring block will contact the outer wall of the cylinder liner. Then, the drive motor is activated to rotate the adsorption frame and the turntable. Simultaneously, the rotation of the turntable also moves the mounting cylinder, the outer rotating rod, the inner ring block, and the outer ring block. As the outer rotating rod moves, its outer... The sprocket also moves, and when it moves, it works in conjunction with the gear ring at the bottom of the top seat, so that the sprocket can rotate while moving. The rotation of the sprocket further drives the outer rotating rod and the drive wheel to rotate. Then, the drive wheel works in conjunction with the driven wheel to drive the inner rotating rod to rotate. At the same time, the outer grinding roller outside the outer rotating rod and the inner grinding roller outside the inner rotating rod also rotate. That is, while the outer grinding roller and the inner grinding roller move around the cylinder liner, they can also grind the outer wall and the inner wall of the cylinder liner at the same time, which improves the overall repair and grinding efficiency.

[0018] 2. By using a dust pump in conjunction with an H-shaped suction tube, the debris generated during grinding can be adsorbed into the filter box. The filter plate inside the filter box then filters out some impurities from the debris. After that, the filtered gas is discharged into the conversion box, and finally discharged again. Using a dust pump in conjunction with an H-shaped suction tube can collect the debris generated during the grinding of the cylinder liner inner wall, avoiding the large amount of debris pushed into the cylinder liner's interior and inner wall, which would require secondary cleaning later. Filtering the impurities in the debris before discharge reduces the wear of the dust pump during operation. When the gas is discharged, the airflow passes through the conversion box, which also drives the impeller inside the conversion box to rotate. This further drives the first rotating rod and cleaning roller at the bottom of the impeller to rotate. The rotating cleaning roller can clean the debris adhering to the inner wall of the cylinder liner, making it easier for the debris to be adsorbed by the H-shaped suction tube. The cleaning roller also moves with the inner ring block, facilitating a comprehensive cleaning of the inner wall of the cylinder liner.

[0019] 3. The first synchronous pulley, in conjunction with the synchronous belt, drives the second synchronous pulley and the second rotating rod to rotate, which in turn drives the pressing protrusions on the outside of the second rotating rod to rotate. The pressing protrusions continuously press the filter plate, causing the filter plate to vibrate under the action of the spring telescopic rod, thus preventing the filter pores inside the filter plate from being blocked by impurities, thereby affecting the speed of gas flow. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a grinding device for ship repair.

[0021] Figure 2 This is a schematic diagram of the structure of a grinding device for ship repair, in which a disc is placed.

[0022] Figure 3 This is a schematic diagram of the limiting component in a grinding device for ship repair.

[0023] Figure 4 This is a schematic diagram of the toothed ring in a grinding device used for ship repair.

[0024] Figure 5 yes Figure 4 A magnified structural diagram of point A in the middle.

[0025] Figure 6 This is a schematic diagram of the internal structure of the mounting cylinder in a grinding device for ship repair.

[0026] Figure 7 This is a schematic diagram of the structure of an h-type adsorption tube in a grinding device for ship repair.

[0027] Figure 8 This is a schematic diagram of the adsorption component in a grinding device for ship repair.

[0028] Figure 9 This is a schematic diagram of the internal structure of a filter frame in a grinding device used for ship repair.

[0029] Figure 10 This is a schematic diagram of the structure of a grinding device for ship repair during cylinder liner grinding.

[0030] Figure 11 This is a cross-sectional view of a cylinder liner being ground in a grinding device used for ship repair.

[0031] The following components are labeled in the diagram: 1. Maintenance seat; 2. Placement tray; 3. Hydraulic rod; 4. Top seat; 5. Drive motor; 6. Adsorption frame; 7. Turntable; 8. Mounting cylinder; 9. Electric gripper; 10. Anti-slip pad; 11. Gear ring; 12. Inner ring block; 13. Outer ring block; 14. Outer grinding roller; 15. Inner grinding roller; 16. Outer rotating rod; 17. Drive wheel; 18. Driven wheel; 19. Inner rotating rod; 20. First rotating rod; 21. Cleaning roller; 22. H-shaped adsorption tube; 23. Adsorption nozzle; 24. Filter box; 25. Dust pump; 26. Conversion box; 27. Impeller; 28. First synchronous pulley; 29. ​​Synchronous belt; 30. Filter plate; 31. Second rotating rod; 32. Second synchronous pulley; 33. Spring telescopic rod; 34. Extrusion protrusion; 35. Connecting rod; 36. Circular gear; 37. Roller. Detailed Implementation

[0032] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 11 As shown, the present invention provides:

[0034] A grinding device for ship repair includes a repair base 1. Hydraulic rods 3 are mounted on both sides of the top of the repair base 1. A top seat 4 is mounted at the telescopic end of each hydraulic rod 3. A placement plate 2 for placing cylinder liners is mounted on the top of the repair base 1. A limiting component for limiting the movement of the cylinder liners is installed inside the placement plate 2. A drive motor 5 is mounted on the top of the top seat 4. An adsorption frame 6 is mounted on the output shaft of the drive motor 5. An adsorption component for adsorbing debris is installed inside the adsorption frame 6. A turntable is mounted at the bottom of the adsorption frame 6. 7. A mounting cylinder 8 is provided at the bottom of the turntable 7. An inner ring block 12 is provided outside the mounting cylinder 8. An inner rotating rod 19 is rotatably provided at the top of the inner ring block 12. An inner grinding roller 15 for grinding the inner wall of the cylinder liner is provided outside the inner rotating rod 19. A symmetrical connecting rod 35 is provided at the bottom of the turntable 7. An outer ring block 13 is provided at the bottom of the connecting rod 35. An outer rotating rod 16 is rotatably provided at the top of the outer ring block 13. An outer grinding roller 14 for grinding the outer wall of the cylinder liner is provided outside the outer rotating rod 16.

[0035] Driven by the hydraulic rod 3, the top seat 4 moves downward. Simultaneously, the inner ring block 12 and outer ring block 13 on the outer wall of the mounting cylinder 8 also move downward along with the top seat 4. This synchronized downward movement causes the inner ring block 12 and outer ring block 13 to move to the inside and outside of the cylinder liner, respectively. When the inner ring block 12 moves inside the cylinder liner, its top inner grinding roller 15 comes into close contact with the inner wall of the cylinder liner; while when the outer ring block 13 moves outside the cylinder liner, its top outer grinding roller 14 also comes into close contact with the outer wall of the cylinder liner. This allows the inner grinding roller 15 and outer grinding roller 14 to simultaneously grind both the inner and outer walls of the cylinder liner. This dual-sided simultaneous grinding method improves the efficiency and effectiveness of cylinder liner maintenance and grinding.

[0036] like Figure 6 and Figure 7 As shown, the outer rotating rod 16 is provided with a driving wheel 17 and a spur gear 36 on its exterior, and the inner rotating rod 19 is provided with a driven wheel 18 that meshes with the driving wheel 17 on its exterior.

[0037] Through the coordinated operation of the driving wheel 17 and the driven wheel 18, the inner rotating rod 19 and the outer rotating rod 16 can be effectively driven to rotate. At the same time, the outer grinding roller 14 outside the outer rotating rod 16 and the inner grinding roller 15 outside the inner rotating rod 19 will also rotate, thereby achieving efficient maintenance and grinding operations on the inner and outer walls of the cylinder liner.

[0038] like Figure 4 and Figure 5 As shown, the bottom of the top seat 4 is provided with a toothed ring 11 that meshes with the spur gear 36, the top of the outer rotating rod 16 is rotatably provided with a roller 37, and the bottom of the top seat 4 is provided with an annular groove for the roller 37 to move.

[0039] By precisely engaging with the gear ring 11 at the bottom of the top seat 4 during movement, the spur gear 36 can rotate while moving. This allows the spur gear 36 to effectively drive the outer rotating rod 16 to rotate. Simultaneously, the roller 37 outside the outer rotating rod 16 moves smoothly within the annular groove, significantly reducing wear that may occur during movement.

[0040] like Figure 3 As shown, the limiting component includes multiple electric grippers 9 disposed inside the placement plate 2, and an anti-slip pad 10 is provided on one side of the electric grippers 9 to prevent the cylinder liner from sliding.

[0041] The cylinder liner can be clamped by the electric gripper 9 inside the placement plate 2 to prevent slippage during grinding, which would reduce the efficiency of maintenance and grinding. At the same time, the anti-slip pad 10 on the side wall of the electric gripper 9 can increase the friction with the outer wall of the cylinder liner, further ensuring the stability of the cylinder liner during grinding. Once the cylinder liner is placed stably,

[0042] like Figure 8 As shown, the adsorption assembly includes a filter box 24, a vacuum pump 25, and a conversion box 26 disposed on the top of the turntable 7. The input end of the vacuum pump 25 is connected to the inside of the filter box 24 through a pipe, and the output end of the vacuum pump 25 is connected to the inside of the conversion box 26 through a pipe.

[0043] By using the vacuum pump 25, we can effectively suck the debris generated during the grinding process into the internal space of the filter box 24. Inside the filter box 24, impurities in these debris are carefully filtered out by the filtration system. The filtered gas is then guided into the internal area of ​​the conversion box 26, and finally, this gas is safely discharged into the external environment.

[0044] like Figure 6 and Figure 7 As shown, an h-shaped adsorption tube 22 is connected to one side of the filter box 24, and multiple adsorption nozzles 23 for adsorbing debris are connected to both sides of the h-shaped adsorption tube 22.

[0045] By using the H-type adsorption tube 22, the debris generated by the inner grinding roller 15 during operation can be effectively adsorbed and treated. The H-type adsorption tube 22 is designed to perform two functions simultaneously: on the one hand, it can adsorb and remove the debris generated during the grinding process to ensure the cleanliness of the working area; on the other hand, it can also effectively adsorb the debris detached from the cleaning roller 21 during the cleaning process, further maintaining the cleanliness and working efficiency of the equipment.

[0046] like Figure 7 and Figure 8 As shown, an impeller 27 is rotatably mounted inside the conversion box 26, and a first rotating rod 20 is rotatably mounted at the bottom of the impeller 27. The bottom of the first rotating rod 20 is rotatably connected to the top of the inner ring block 12, and a cleaning roller 21 for cleaning debris from the inner wall of the cylinder liner is mounted outside the first rotating rod 20.

[0047] During the exhaust process, the airflow passes through the conversion chamber 26, causing the impeller 27 inside the chamber to rotate. This rotation further drives the first rotating rod 20 at the bottom of the impeller 27 and the cleaning roller 21 to rotate as well. This rotation effectively removes various debris adhering to the inner wall of the cylinder liner. Once this debris is removed, it becomes easily adsorbed by the H-shaped suction tube 22, ensuring a smooth and efficient cleaning process.

[0048] like Figure 9 As shown, a plurality of spring telescopic rods 33 are provided on one inner wall of the filter box 24, and a filter plate 30 for filtering debris is provided at the telescopic end of the spring telescopic rod 33.

[0049] The filter plate 30 installed inside the filter box 24 effectively filters impurities from the debris. This pre-filtration step, performed before discharge, reduces wear on the vacuum pump 25 during operation. This not only extends the service life of the vacuum pump 25 but also ensures efficient operation of the entire system, thereby reducing maintenance costs and improving operational efficiency.

[0050] like Figure 9 As shown, a second rotating rod 31 is rotatably arranged inside the filter box 24. The bottom of the second rotating rod 31 is rotatably connected to the top of the turntable 7. A pressing protrusion 34 for pressing the filter plate 30 is provided on the outside of the second rotating rod 31.

[0051] The continuous action of the pressing protrusion 34 achieves continuous compression of the filter plate 30. This compression action keeps the filter plate 30 in a state of vibration under the action of the spring telescopic rod 33. Such vibration helps prevent impurities from clogging the filter pores inside the filter plate 30, thereby ensuring that the gas flow speed is not affected by blockage.

[0052] like Figure 8 and Figure 9 As shown, a first synchronous pulley 28 is provided on the outside of the first rotating rod 20, and a second synchronous pulley 32 is provided on the outside of the second rotating rod 31. The first synchronous pulley 28 and the second synchronous pulley 32 are connected by a synchronous belt 29.

[0053] Through the precise engagement of the first synchronous pulley 28 and the efficient transmission of the synchronous belt 29, the second synchronous pulley 32 and the second rotating rod 31 can be driven. As the second rotating rod 31 rotates, the external pressing protrusion 34 also rotates accordingly. This makes the process of pressing the filter plate 30 more convenient and efficient.

[0054] Working Principle: When grinding and repairing the cylinder liner of a marine diesel engine, the operator first removes the cylinder liner and places it inside the placement plate 2. The electric grippers 9 inside the placement plate 2 then hold the cylinder liner in place, preventing slippage during grinding and reducing grinding efficiency. The anti-slip pads 10 on the sidewalls of the electric grippers 9 increase friction with the outer wall of the cylinder liner, further ensuring stability during grinding. Once the cylinder liner is stable, the hydraulic rod 3 is activated, moving the top seat 4 downwards. Simultaneously, the inner ring block 12 and outer ring block 13 on the outer wall of the mounting cylinder 8 also move downwards, placing them inside and outside the cylinder liner respectively. At this point, the inner ring block 12 at the top of the inner ring block 12... The grinding roller 15 contacts the inner wall of the cylinder liner, while the outer grinding roller 14 on the top of the outer ring block 13 contacts the outer wall of the cylinder liner. Then, the drive motor 5 is started, driving the adsorption frame 6 and the turntable 7 to rotate. Simultaneously, the rotation of the turntable 7 also moves the mounting cylinder 8, the outer rotating rod 16, the inner ring block 12, and the outer ring block 13. When the outer rotating rod 16 moves, its external sprocket 36 also moves. The sprocket 36 engages with the gear ring 11 at the bottom of the top seat 4, allowing it to rotate while moving. This rotation further drives the outer rotating rod 16 and the drive wheel 17 to rotate. The drive wheel 17, in conjunction with the driven wheel 18, drives the inner rotating rod 19 to rotate. Simultaneously, the outer grinding roller 14 on the outside of the outer rotating rod 16 and the outer grinding roller 14 on the outside of the inner rotating rod 19... The inner grinding roller 15 also rotates, meaning that while the outer grinding roller 14 and the inner grinding roller 15 move around the cylinder liner, they can simultaneously grind both the outer and inner walls of the cylinder liner, improving the overall repair and grinding efficiency. During the repair and grinding of the inner wall of the cylinder liner, the generated debris easily falls into the inside of the cylinder liner and adheres to the inner wall. Therefore, when grinding the cylinder liner, the dust pump 25 is activated. Using the dust pump 25 in conjunction with the H-type suction tube 22, the debris generated during grinding can be adsorbed into the filter box 24. Then, the filter plate 30 inside the filter box 24 filters some impurities from the debris. Afterward, the filtered gas is discharged into the conversion box 26, and finally, the filtered gas is discharged again. Using the dust pump 25 in conjunction with the H-type suction tube 22... The debris generated during the grinding of the cylinder liner inner wall is collected to prevent a large amount of debris from being pushed into the cylinder liner's interior and inner wall, requiring secondary cleaning later. Filtering impurities from the debris before discharge reduces wear on the dust pump 25 during operation. During exhaust, the airflow passes through the conversion box 26, simultaneously rotating the impeller 27 inside the conversion box 26. This further rotates the first rotating rod 20 and cleaning roller 21 at the bottom of the impeller 27. The rotating cleaning roller 21 cleans the debris adhering to the cylinder liner inner wall, making it easier for the debris to be adsorbed by the H-shaped suction tube 22. The cleaning roller 21 also moves with the inner ring block 12, facilitating comprehensive cleaning of the cylinder liner's inner wall. When the first rotating rod 20 rotates, its external first synchronous pulley 28 also rotates.The first synchronous pulley 28, in conjunction with the synchronous belt 29, drives the second synchronous pulley 32 and the second rotating rod 31 to rotate. This, in turn, drives the pressing protrusion 34 on the outside of the second rotating rod 31 to rotate. The pressing protrusion 34 continuously presses against the filter plate 30, causing the filter plate 30 to vibrate under the action of the spring telescopic rod 33. This prevents impurities from clogging the filter holes inside the filter plate 30, thus affecting the gas flow rate. Finally, after grinding, the cylinder liner can be removed.

[0055] The above embodiments merely illustrate one or several implementations of the grinding device for ship repair according to the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

[0056] In this invention, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A grinding device for ship repair, characterized in that, Includes a maintenance seat (1), on both sides of the top of the maintenance seat (1) are provided hydraulic rods (3), the telescopic ends of the hydraulic rods (3) are provided with top seats (4), the top of the maintenance seat (1) is provided with a placement plate (2) for placing cylinder liners, the interior of the placement plate (2) is provided with a limiting component for limiting the cylinder liners, the top of the top seat (4) is provided with a drive motor (5), the output shaft of the drive motor (5) is provided with an adsorption frame (6), the interior of the adsorption frame (6) is provided with an adsorption component for adsorbing debris, the bottom of the adsorption frame (6) is provided with a turntable (7), the turntable ( 7) has an installation cylinder (8) at its bottom, an inner ring block (12) on the outside of the installation cylinder (8), an inner rotating rod (19) on the top of the inner ring block (12), an inner grinding roller (15) for grinding the inner wall of the cylinder liner on the outside of the inner rotating rod (19), a symmetrical connecting rod (35) at the bottom of the turntable (7), an outer ring block (13) at the bottom of the connecting rod (35), an outer rotating rod (16) on the top of the outer ring block (13), and an outer grinding roller (14) for grinding the outer wall of the cylinder liner on the outside of the outer rotating rod (16). The outer rotating rod (16) is provided with a driving wheel (17) and a spur gear (36) on its outside, and the inner rotating rod (19) is provided with a driven wheel (18) that meshes with the driving wheel (17) on its outside. The bottom of the top seat (4) is provided with a toothed ring (11) that meshes with the spur gear (36), the top of the outer rotating rod (16) is rotatably provided with a roller (37), and the bottom of the top seat (4) is provided with an annular groove that moves in cooperation with the roller (37). The adsorption assembly includes a filter box (24), a dust pump (25) and a conversion box (26) disposed on the top of the turntable (7). The input end of the dust pump (25) is connected to the inside of the filter box (24) through a pipe, and the output end of the dust pump (25) is connected to the inside of the conversion box (26) through a pipe. The converter box (26) is rotatably equipped with an impeller (27), and a first rotating rod (20) is rotatably equipped at the bottom of the impeller (27). The bottom of the first rotating rod (20) is rotatably connected to the top of the inner ring block (12), and a cleaning roller (21) for cleaning debris from the inner wall of the cylinder liner is provided on the outside of the first rotating rod (20). The filter box (24) has a plurality of spring telescopic rods (33) on one side of its inner wall, and the telescopic ends of the spring telescopic rods (33) are provided with filter plates (30) for filtering debris. The filter box (24) is rotatably provided with a second rotating rod (31), the bottom of the second rotating rod (31) is rotatably connected to the top of the turntable (7), and the outside of the second rotating rod (31) is provided with a pressing protrusion (34) for pressing the filter plate (30). The first rotating rod (20) is provided with a first synchronous pulley (28) on its outside, and the second rotating rod (31) is provided with a second synchronous pulley (32) on its outside. The first synchronous pulley (28) and the second synchronous pulley (32) are connected by a synchronous belt (29).

2. The grinding device for ship repair according to claim 1, characterized in that, The limiting component includes multiple electric grippers (9) disposed inside the placement plate (2), and one side of the electric grippers (9) is provided with an anti-slip pad (10) to prevent the cylinder liner from sliding.

3. The grinding device for ship repair according to claim 1, characterized in that, The filter box (24) is connected to an h-shaped adsorption tube (22) on one side, and multiple adsorption nozzles (23) for adsorbing debris are connected to both sides of the h-shaped adsorption tube (22).

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