Marine propeller polishing device

Abstract

The marine propeller polishing device comprises a base, a positioning table and a polishing mechanism, the positioning table comprises a driving motor and a rotating table, the polishing mechanism comprises an adjusting frame and a polishing disc, a mounting frame is arranged on the adjusting frame, and a clamping plate used for clamping the end of a propeller blade is vertically and slidably connected to the mounting frame; the clamping plates are symmetrically distributed up and down, a clamping cavity is formed between the clamping plates, a driving block is horizontally and slidably connected to the position, corresponding to the clamping cavity, of the mounting frame, a transmission part for transmitting the driving block and the clamping plates is arranged between the driving block and the clamping plates, the paddle abuts against the driving block to horizontally move to drive the clamping plates to oppositely move to clamp the paddle, and the paddle penetrates through the position between the upper polishing disc and the lower polishing disc. The upper surface and the lower surface of the paddle can be polished at the same time through the polishing disc, in the process that the paddle penetrates into the mounting frame, the end of the paddle pushes the driving block to move and is in linkage with the clamping plate for clamping and fixing, the paddle is not prone to deformation and shaking in the polishing process, and the polishing quality and precision are effectively improved.

Description

Technical Field

[0001] The invention relates to the field of propeller processing equipment, in particular to a marine propeller polishing device. Background Art

[0002] A marine propeller is a propulsion device installed at the stern of a ship (or other location, such as a thruster) that converts the torque generated by the ship's main engine (such as a diesel engine, gas turbine, electric motor, etc.) into axial thrust through rotational motion, thereby propelling the ship forward or backward in the water.

[0003] The actual production process of propellers involves polishing their surfaces. The polished propeller surface is smoother and can reduce the friction resistance of the water flow, thereby improving the propulsion efficiency. Currently, many methods of polishing are done manually, which has low polishing efficiency. In addition, due to the large size of the propeller itself, it is difficult to position it, which affects the polishing accuracy and needs to be further improved. Summary of the invention

[0004] In order to further improve the polishing accuracy and efficiency, the present application provides a marine propeller polishing device.

[0005] The present application provides a marine propeller polishing device, which adopts the following technical solution: A marine propeller polishing device comprises a base, a positioning platform and a polishing mechanism, the positioning platform comprises a driving motor and a rotating platform, the rotating platform is provided with a positioning column which is sleeved and positioned with a propeller hub, the driving motor drives the rotating platform to rotate, the polishing mechanism comprises an adjusting frame and a polishing disc, the adjusting frame is provided with a mounting frame, the polishing disc is symmetrically arranged on the mounting frame, the mounting frame is provided with a first motor which drives the polishing disc to rotate, a spacing is formed between the symmetrical polishing discs, a clamping plate for clamping an end of a blade is vertically slidably connected to the mounting frame, the clamping plates are symmetrically distributed up and down, a clamping cavity is formed between the clamping plates, a driving block is horizontally slidably connected to the mounting frame corresponding to the clamping cavity, a transmission member for transmitting the two is provided between the driving block and the clamping plate, the blade presses the driving block to move horizontally, and the transmission clamping plates move toward each other to clamp the blade.

[0006] Optionally, the transmission member includes a connecting rod, two of which are symmetrically arranged, and a sliding rod is arranged on the clamping plate and is vertically slidably connected to the mounting frame. The middle part of the connecting rod is rotatably connected to the mounting frame, one end of the connecting rod is movably hinged on the driving block, and the other end of the connecting rod is movably hinged on the sliding rod.

[0007] Optionally, the mounting frame includes an upper plate and a vertical plate, the upper plate is provided with a downward suction port, the suction port is connected to the suction fan, the driving block is connected to the vertical plate, and a button for turning on the suction fan is provided on the vertical plate corresponding to the moving stroke of the driving block. When the driving block moves the transmission clamping plate to clamp the end of the blade, the driving block presses the button to turn on the suction fan.

[0008] Optionally, the mounting frame further comprises a lower plate, the lower plate is provided with a vertically penetrating chip removal hole, and a chip receiving box is arranged below the mounting frame corresponding to the chip removal hole.

[0009] Optionally, both sides of the chip receiving box are suspended at the bottom of the lower plate by suspension ropes, and the air outlet of the suction fan is connected to the chip receiving box.

[0010] Optionally, a partition is provided in the chip box, the partition divides the chip box into an upper chamber and a lower chamber, and the air outlet of the suction fan is connected to the lower chamber.

[0011] Optionally, a second motor is provided on the adjustment frame, an output end of the second motor is connected to the middle of the vertical plate, the second motor drives the mounting frame to rotate, and the rotation center line of the mounting frame is parallel to the line connecting the lifting points on both sides of the chip receiving box.

[0012] Optionally, a chip outlet is provided at the bottom of one side of the chip box, and the chip outlet is connected to the lower cavity. A cover plate is hingedly connected to the chip box at the corresponding chip outlet to close it. The top of the cover plate is hinged to the chip box. The top of the chip box has a connecting column, and the bottom of the lower plate has a protruding column. A connecting sleeve is threadedly connected to the connecting column, and the end of the connecting sleeve away from the connecting column is used for threading connection to the protruding column.

[0013] Optionally, a slide plate is horizontally slidably connected to the partition, and corresponding and spaced through grooves are formed on the slide plate and the partition.

[0014] Optionally, one end of the first motor away from the polishing disk is ball-jointed on the mounting frame, a connecting ball is provided at one end of the first motor, a connecting seat is provided on the mounting frame, the connecting seat has an arc surface for adapting to the surface of the connecting ball, the connecting ball is magnetic, an electromagnet is embedded in the connecting seat, and the electromagnet is energized to adsorb and fix the connecting ball.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. During processing, the propeller hub is mounted on a rotating table for positioning. The propeller blade passes between the upper and lower polishing discs, and the upper and lower surfaces of the propeller blade can be polished at the same time with the help of the polishing discs. The position of the polishing disc is adjusted with the help of the adjustment frame to achieve polishing of different areas of the propeller blade. In the process of the propeller blade passing through the mounting frame, the end of the propeller blade pushes the drive block to move and links the clamping plate to clamp and fix it. The clamping plate supports and clamps the free end of the propeller blade. During the polishing process, the propeller blade is not prone to deformation and shaking, which effectively improves the polishing quality and accuracy. This polishing method has the advantage of high efficiency. 2. The design of the air suction port and the chip collecting box. When the blade is clamped by the clamping plate, the button is automatically triggered to start the suction fan for suction. The air suction port can suck away the debris generated during the polishing process and finally collect it in the chip collecting box. Some of the debris that falls can enter the chip collecting box through the chip collecting box, thereby realizing the automatic collection of the debris generated by polishing and keeping the processing environment clean. 3. The chip box is connected to the bottom of the mounting frame by a flexible hoisting method. In this way, even if the mounting frame rotates, the chip box can still be kept vertically directly below to maintain a good receiving effect. When it is necessary to remove chips from the chip box, just rotate the connecting sleeve and connect it with the convex column on the mounting frame. At this time, the chip box can tilt with the rotation of the mounting frame. After tilting, the cover plate opens under the action of gravity, and the internal debris can be discharged from the chip outlet. The chip removal operation of the chip box is simple and convenient; 4. One end of the first motor is connected to the mounting frame by a ball joint, so that the polishing disc can better adapt to the arc surface area of ​​the blade during the polishing process, and after the polishing disc is adjusted to a good angle, the current angle of the polishing disc can be locked with the help of the magnetic force of the electromagnet, thereby ensuring a better polishing effect. After the suction of the electromagnet is disconnected, the polishing disc can freely adjust the angle, which is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall structural diagram of an embodiment of the present application.

[0017] Figure 2 It is a structural diagram of the mounting frame in the embodiment of the present application.

[0018] Figure 3 It is a cross-sectional view of the chip box in the embodiment of the present application.

[0019] Figure 4 This is a structural diagram of the first motor connection in the embodiment of the present application. Description of reference numerals: 1. Base; 2. Positioning table; 3. Polishing mechanism; 4. Driving motor; 5. Rotating table; 6. Positioning column; 7. Adjusting frame; 8. Polishing plate; 9. Horizontal frame; 10. Vertical frame; 11. First screw rod; 12. Horizontal motor; 13. Mounting frame; 14. Second screw rod; 15. Vertical motor; 16. Base; 17. Vertical plate; 18. Upper plate; 19. Lower plate; 20. Adjusting cylinder; 21. Vertical cylinder; 22. First motor; 23. Second motor; 24. Driving block; 25. Clamping plate; 26. Slide rod; 27, connecting rod; 28, hinge groove; 29, slide groove; 30, return spring; 31, air suction port; 32, button; 33, chip box; 34, chip discharge hole; 35, partition; 36, upper cavity; 37, lower cavity; 38, air outlet pipe; 39, lifting rope; 40, chip discharge port; 41, cover plate; 42, connecting column; 43, convex column; 44, connecting sleeve; 45, slide plate; 46, through groove; 47, connecting seat; 48, connecting ball; 49, arc surface; 50, electromagnet; 51, propeller hub; 52, propeller blade. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 This application is described in further detail.

[0021] A marine propeller polishing device, such as Figure 1 and Figure 2 As shown, it includes a base 1, a positioning platform 2 and a polishing mechanism 3. The positioning platform 2 includes a driving motor 4 and a rotating platform 5. The driving motor 4 is arranged vertically upward. The output end of the driving motor 4 is connected to the rotating platform 5 and drives the rotating platform 5 to rotate circumferentially. The top of the rotating platform 5 is provided with a positioning column 6 for the hub 51 to be sleeved and positioned. The polishing mechanism 3 is arranged on one side of the base 1 for polishing the blades 52 of the propeller. After completing the polishing of one of the blades 52, it is only necessary to drive the propeller to rotate to switch the position of the blade 52 to realize the polishing process of another blade 52. It is convenient and quick, and the sequential polishing process of each blade 52 can be quickly realized.

[0022] like Figure 1 and Figure 2As shown, the polishing mechanism 3 includes an adjusting frame 7 and a polishing disc 8, wherein the adjusting frame 7 includes a horizontal frame 9 and a vertical frame 10, the horizontal frame 9 is horizontally fixed on the base 1, the vertical frame 10 is horizontally slidably connected to the horizontal frame 9, the horizontal frame 9 is provided with a first screw rod 11 passing through the vertical frame 10, the first screw rod 11 is threadedly connected to the horizontal frame 9, the end of the first screw rod 11 is provided with a horizontal motor 12 for driving it to rotate, the first screw rod 11 is driven to rotate by the horizontal motor 12 to realize the vertical and horizontal position movement adjustment, the vertical frame 10 is provided with a mounting frame 13 and a second screw rod 14, the second screw rod 14 is vertically arranged, the end of the second screw rod 14 is provided with a vertical motor 15 for driving it to rotate, one side of the mounting frame 13 has a seat body 16 vertically slidably connected to the vertical frame 10, the second screw rod 14 passes through the seat body 16 and is threadedly connected thereto, so that the vertical height position adjustment of the mounting frame 13 can be realized by driving the second screw rod 14 to rotate with the help of the vertical motor 15.

[0023] like Figure 1 and Figure 2 As shown, the mounting frame 13 includes a vertical plate 17, an upper plate 18 and a lower plate 19, the upper plate 18 and the lower plate 19 are arranged in parallel, and an adjusting cylinder 20 is arranged on the vertical plate 17 to drive the upper plate 18 and the lower plate 19 to move horizontally toward the propeller hub 51. Two polishing discs 8 are symmetrically arranged up and down, the upper polishing disc 8 is arranged on the upper plate 18, and the lower polishing disc 8 is arranged on the lower plate 19. Relative vertical cylinders 21 are respectively arranged on the upper plate 18 and the lower plate 19, and the vertical cylinders 21 are arranged one by one with the polishing discs 8. The vertical cylinders 21 drive the two polishing discs 8 to move toward each other. Or move back and forth, a first motor 22 is provided on the polishing disc 8 to drive it to rotate, and the driving end of the vertical cylinder 21 is connected to the first motor 22, so that the distance between the two polishing discs 8 can be adjusted, which can be suitable for polishing blades 52 of different thicknesses and has better applicability; in addition, a second motor 23 is fixedly provided on the seat body 16 to drive the mounting frame 13 to rotate, so as to realize the position adjustment of the polishing disc 8 on the mounting frame 13 in the rotation direction, and the position of the polishing disc 8 can be more comprehensively adjusted to meet the polishing requirements of more different blades 52.

[0024] In this way, in actual use, one of the blades 52 is placed between the polishing discs 8, and then the vertical cylinder 21 drives the polishing disc 8 to abut against the upper and lower surfaces of the blade 52, the first motor 22 drives the polishing disc 8 to rotate, and then the horizontal and vertical positions of the polishing disc 8 are continuously moved and adjusted, so that the entire surface of the blade 52 can be polished, which is convenient and quick, effectively improves the polishing efficiency of the propeller, and improves production efficiency.

[0025] like Figure 1 and Figure 2As shown, the vertical plate 17 is horizontally slidably connected with a driving block 24 at the middle position of the two polishing discs 8. The driving block 24 is used to be pushed by the end of the paddle 52. At the same time, clamping plates 25 for clamping the end of the paddle 52 are symmetrically arranged on the upper and lower sides of the vertical plate 17 corresponding to the end of the paddle 52. The clamping plate 25 is vertically slidably connected to the vertical plate 17 by means of a slide bar 26. A transmission member for transmitting the two is arranged between the driving block 24 and the clamping plate 25. The paddle 52 presses the driving block 24 to move horizontally, and the transmission clamping plate 25 moves toward each other to clamp the end of the paddle 52. In this way, the clamping support for the end of the paddle 52 can be automatically achieved, thereby improving the stability of the paddle 52 during polishing, and can effectively improve the quality and uniformity of polishing; the transmission member includes a connecting rod 27, and two connecting rods 27 are symmetrically arranged. The middle part of the connecting rod 27 is rotatably connected to the vertical plate 17. One end of the connecting rod 27 is movably hinged on the slide bar 26, and the other end of the connecting rod 27 is movably hinged on the driving block 24. The driving block 24 and the slide bar 26 are both provided with a hinge groove 28 for the end of the connecting rod 27 to be movably hinged. In addition, a slide groove 29 for the driving block 24 to slide horizontally is provided on the vertical plate 17, and the bottom wall of the slide groove 29 is provided with a return spring 30 for driving the end of the driving block 24 to move out of the slide groove 29 appropriately; in this way, the end of the driving block 24 protrudes out of the slide groove 29 in the initial state, and when the paddle 52 is installed, its end presses the driving block 24 to drive it to move inward. During the inward movement of the driving block 24, the clamping plate 25 is driven to move toward each other with the help of the connecting rod 27 to realize automatic clamping and fixing of the end of the paddle 52. After the polishing process is completed, when the paddle 52 is pulled out, the driving block 24 returns to its original position under the action of the return spring 30, and the transmission clamping plate 25 moves in the opposite direction to automatically realize loosening.

[0026] like Figure 1 and Figure 2 As shown, a plurality of evenly distributed suction ports 31 are provided on the bottom wall of the upper plate 18, and the suction ports 31 are connected to a suction fan. Since debris and dust are generated during the polishing process, the generated debris can be sucked away in time with the help of the suction ports 31, effectively reducing the dust phenomenon and improving the surrounding environment of the polishing process; a button 32 for being pressed and triggered by the drive block 24 is provided on the bottom wall of the slide groove 29, and the button 32 is used to start the suction fan. In this way, the button 32 is triggered after the drive block 24 moves horizontally to complete the clamping of the clamping plate 25, so that the suction fan is automatically turned on for suction, without the need for manual operation, which is simple and convenient, compact and practical.

[0027] like Figure 1 and Figure 3As shown, a chip box 33 is suspended at the bottom of the lower plate 19, and a plurality of evenly distributed chip removal holes 34 are vertically opened on the lower plate 19. During the polishing process, some chips that fall can fall into the chip box 33 through the chip removal holes 34 and are collected, which is convenient for the subsequent unified collection and processing of the chips. A partition 35 is horizontally arranged in the chip box 33, and the partition 35 divides the interior of the chip box 33 into an upper chamber 36 and a lower chamber 37. The upper chamber 36 is connected to the chip removal holes 34, and the air outlet duct 38 of the suction fan is connected to the lower chamber 37. In this way, the falling chips can be received while the chips sucked away by the suction port 31 are also collected in the chip box 33, so that the chips are uniformly collected. In the meantime, the partition 35 is used to separate the upper chamber 36 and the lower chamber 37, so as to avoid the situation where the wind force of the suction fan causes the chips in the chip box 33 to be blown out.

[0028] like Figure 1 and Figure 3 As shown, the top of the chip box 33 is hoisted on the bottom of the lower plate 19 by means of hanging ropes 39 on both sides, and the connecting line of the hanging points of the two hanging ropes 39 is arranged parallel to the rotation center line of the vertical plate 17, and a chip outlet 40 connected to the lower cavity 37 is provided at the bottom of the side wall of one side of the chip box 33, and a cover plate 41 for closing it is hinged at the chip outlet 40, and the top of the cover plate 41 is hinged on the chip box 33, and a connecting column 42 is fixedly provided on the top of the chip box 33, and a convex column 43 is correspondingly provided on the vertical cylinder 21 of the lower plate 19, and a connecting sleeve 44 is threadedly connected to the connecting column 42, and the top of the connecting sleeve 44 is used for threading connection with the convex column 43. When the chips in the chip box 33 do not need to be discharged, the connecting sleeve 44 is not connected to the convex column 43 is connected, at this time, the chip box 33 is hoisted and connected to the lower plate 19 by means of a hoisting rope 39. Even if the mounting frame 13 rotates during polishing, the chip box 33 is still located directly below under the action of its own gravity, and always maintains a good chip receiving state; when the debris in the chip box 33 needs to be discharged and cleaned, the connecting sleeve 44 is rotated to make it threadedly connected to the boss 43, and then the mounting frame 13 is driven to rotate and tilt with the help of the second motor 23, driving the chip box 33 to tilt. After the tilt, the cover plate 41 flips down under the action of its own gravity to open the chip outlet 40, thereby realizing automatic chip discharge of the chip box 33, which is simple and convenient. After the chip discharge is completed, the chip box 33 is driven to rotate to a horizontal state, and the cover plate 41 flips down to automatically close the chip outlet 40.

[0029] like Figure 1 and Figure 3As shown, a slide plate 45 is horizontally slidably connected above the corresponding partition plate 35 inside the chip box 33, and corresponding and spaced through grooves 46 are provided on the slide plate 45 and the partition plate 35. Initially, the chip box 33 is in a hoisted horizontal state, and the slide plate 45 and the through grooves 46 on the partition plate 35 are misaligned and not connected. When the chip box 33 is rigidly connected to the lower plate 19 by means of a connecting sleeve 44 and tilts as the mounting frame 13 rotates, the slide plate 45 moves to one end, at which time the through grooves 46 correspond and are connected, and the debris in the upper cavity 36 falls into the lower cavity 37 through the through grooves 46 and is finally discharged through the chip outlet 40, thereby realizing the unified discharge of the debris in the upper cavity 36, which is more convenient and quick.

[0030] like Figure 4 As shown, the end of the first motor 22 away from the polishing disk 8 is connected to a connecting seat 47, and the connecting seat 47 is used to connect to the output end of the vertical cylinder 21. A connecting ball 48 for connection is fixedly provided at the end of the first motor 22, and the connecting ball 48 is hinged on the connecting seat 47. The connecting seat 47 is provided with an arc surface 49 adapted to the surface of the connecting ball 48, wherein the connecting ball 48 is magnetic and the connecting ball 48 can be made of metal iron. An electromagnet 50 is embedded in the connecting seat 47, and the electromagnet 50 is energized to generate magnetic force to adsorb and fix the connecting ball 48, thereby realizing locking for the angle adjustment of the polishing disk 8; in this way, the polishing disk 8 can better adapt to the arc surface 49 area of ​​the blade 52 during the polishing process, and after the polishing disk 8 is adjusted to a good angle, the current angle of the polishing disk 8 can be locked by means of the magnetic adsorption of the electromagnet 50, thereby ensuring a better polishing effect. After the suction of the electromagnet 50 is disconnected, the polishing disk 8 can freely adjust its angle, which is simple and practical.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A marine propeller polishing device, characterized in that: The invention comprises a base (1), a positioning platform (2) and a polishing mechanism (3), wherein the positioning platform (2) comprises a driving motor (4) and a rotating platform (5), wherein the rotating platform (5) is provided with a positioning column (6) which is sleeved and positioned with a propeller hub (51), wherein the driving motor (4) drives the rotating platform (5) to rotate, and the polishing mechanism (3) comprises an adjusting frame (7) and a polishing disc (8), wherein the adjusting frame (7) is provided with a mounting frame (13), wherein the polishing disc (8) is symmetrically arranged on the mounting frame (13), and wherein the mounting frame (13) is provided with a first motor (16) for driving the polishing disc (8) to rotate. 22), there is a spacing between the symmetrical polishing discs (8) to form a spacing groove, the mounting frame (13) is vertically slidably connected with a clamping plate (25) for clamping the end of the blade (52), the clamping plates (25) are symmetrically distributed up and down, and a clamping cavity is formed between the clamping plates (25), the mounting frame (13) is horizontally slidably connected with a driving block (24) corresponding to the clamping cavity, and a transmission member for transmitting the two is arranged between the driving block (24) and the clamping plate (25), and the blade (52) presses the driving block (24) to horizontally move the transmission clamping plate (25) to move toward each other and clamp the blade (52).

2. A marine propeller polishing device according to claim 1, characterized in that: The transmission member comprises a connecting rod (27), two of which are symmetrically arranged, a sliding rod (26) vertically slidably connected to the mounting frame (13) is arranged on the clamping plate (25), the middle part of the connecting rod (27) is rotatably connected to the mounting frame (13), one end of the connecting rod (27) is movably hinged on the driving block (24), and the other end of the connecting rod (27) is movably hinged on the sliding rod (26).

3. A marine propeller polishing device according to claim 2, characterized in that: The mounting frame (13) comprises an upper plate (18) and a vertical plate (17); the upper plate (18) is provided with a downwardly facing air suction port (31); the air suction port (31) is connected to a suction fan; the driving block (24) is connected to the vertical plate (17); a button (32) for starting the suction fan is provided on the vertical plate (17) corresponding to the moving stroke of the driving block (24); when the driving block (24) moves the transmission clamping plate (25) to clamp the end of the paddle (52), the driving block (24) presses the button (32) to start the suction fan.

4. A marine propeller polishing device according to claim 3, characterized in that: The mounting frame (13) further comprises a lower plate (19), the lower plate (19) being provided with a chip removal hole (34) penetrating vertically, and a chip receiving box (33) being arranged below the mounting frame (13) corresponding to the chip removal hole (34).

5. A marine propeller polishing device according to claim 4, characterized in that: The two sides of the chip receiving box (33) are suspended on the bottom of the lower plate (19) by means of suspension ropes (39), and the air outlet of the suction fan is connected to the inside of the chip receiving box (33).

6. A marine propeller polishing device according to claim 5, characterized in that: A partition (35) is provided in the chip receiving box (33), and the partition (35) divides the chip receiving box (33) into an upper chamber (36) and a lower chamber (37). The air outlet of the suction fan is connected to the lower chamber (37).

7. A marine propeller polishing device according to claim 6, characterized in that: The adjusting frame (7) is provided with a second motor (23), the output end of the second motor (23) is connected to the middle of the vertical plate (17), the second motor (23) drives the mounting frame (13) to rotate, and the rotation center line of the mounting frame (13) is parallel to the line connecting the lifting points on both sides of the chip receiving box (33).

8. A marine propeller polishing device according to claim 7, characterized in that: A chip outlet (40) is provided at the bottom of one side of the chip receiving box (33), and the chip outlet (40) is communicated with the lower chamber (37). A cover plate (41) is hingedly connected to the chip receiving box (33) at the chip outlet (40) corresponding to the chip outlet. The top of the cover plate (41) is hingedly connected to the chip receiving box (33). The top of the chip receiving box (33) has a connecting column (42). The bottom of the lower plate (19) has a convex column (43). A connecting sleeve (44) is threadedly connected to the connecting column (42). The end of the connecting sleeve (44) away from the connecting column (42) is used for being threadedly connected to the convex column (43).

9. A marine propeller polishing device according to claim 8, characterized in that: A slide plate (45) is horizontally slidably connected to the partition plate (35), and corresponding and spaced through grooves (46) are provided on the slide plate (45) and the partition plate (35).

10. A marine propeller polishing device according to claim 1, characterized in that: One end of the first motor (22) away from the polishing disc (8) is spherically hinged on the mounting frame (13); a connecting ball (48) is provided at one end of the first motor (22); a connecting seat (47) is provided on the mounting frame (13); the connecting seat (47) has an arc surface (49) for matching with the surface of the connecting ball (48); the connecting ball (48) is magnetic; an electromagnet (50) is embedded in the connecting seat (47); the electromagnet (50) is energized to adsorb and fix the connecting ball (48).

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