A polishing device for marine deck castings

Abstract

The present invention belongs to the technical field of polishing, and is a polishing device for marine deck castings. A position adjustment device drives a transmission device to rotate through an output device, and the rotating transmission device drives a grinding and polishing device to rotate, and the directions of the grinding and polishing device and the position adjustment device are opposite to each other, thereby enhancing the polishing effect. A height adjustment device adjusts the height of the grinding and polishing device so that the grinding and polishing device is in close contact with the surface of the polished part, and then the position adjustment device drives the height adjustment device to move, and the height adjustment device drives the grinding and polishing device to move. In the process of the position adjustment device driving the grinding and polishing device to move, the position adjustment device drives the grinding and polishing device to rotate through the output device and the transmission device, and the direction of rotation of the grinding and polishing device is opposite to the direction of movement of the height adjustment device, thereby improving the polishing efficiency. The position adjustment device increases the range of polishing, and when the position adjustment device stops moving, the grinding and polishing device also stops polishing, thereby avoiding different degrees of polishing.

Description

Technical Field

[0001] The invention belongs to the technical field of polishing, and in particular relates to a polishing device for ship deck castings. Background Art

[0002] Castings on ship decks, if left unmaintained for extended periods, can oxidize and produce rust, making the surface rough. Polishing is a process that uses mechanical action to reduce the surface roughness of a workpiece, resulting in a bright, smooth surface.

[0003] The main polishing method now is to polish manually with a small polishing machine. The polishing effect of this method is not smooth enough. Another method is to fix the casting with a tooling and then move the casting and then polish it with a fixed polishing device. This polishing method cannot polish large castings. Summary of the Invention

[0004] The present invention aims to provide a marine deck casting polishing device to solve the problem that large castings cannot be polished.

[0005] To achieve the above-mentioned purpose, the specific technical solution of a marine deck casting polishing device of the present invention is as follows:

[0006] A polishing device for marine deck castings comprises a position adjustment device, a height adjustment device and a grinding and polishing device, wherein the position adjustment device is provided with a height adjustment device, and the grinding and polishing device is arranged on the height adjustment device, the position adjustment device is provided with an output device, and the height adjustment device is provided with a transmission device, the position adjustment device drives the transmission device to rotate via the output device, and the rotating transmission device drives the grinding and polishing device to rotate, and the directions of the grinding and polishing device and the position adjustment device are opposite to each other to enhance the polishing effect.

[0007] Furthermore, the position adjustment device includes a slide, a rotating screw and a movable slider. The movable slider slides inside the slide. The rotating screw is arranged inside the slide. The rotating screw and the movable slider cooperate. The rotating screw is provided with a matching servo motor. The output device is arranged on the slide. The rotating screw and the output device are connected. The movable slider drives the height adjustment device to move.

[0008] Furthermore, the output device includes a first output gear, a transmission column and a receiving gear. The first output gear is arranged on the rotating screw, the transmission column is arranged on the slideway, the receiving gear is arranged on the transmission column, the receiving gear and the first output gear are engaged, and the transmission column drives the transmission device.

[0009] Furthermore, the height adjustment device includes a fixed column, a servo motor, a threaded rod, a movable column, a first sliding groove, a center column, a threaded hole and an extrusion device, the fixed column is arranged on the movable slider, the servo motor is arranged inside the fixed column, the threaded rod is arranged on the servo motor, the movable column is provided with a first sliding groove and a center column, the movable column slides on the fixed column through the first sliding groove, the center column is provided with a threaded hole matching the threaded rod, the center column slides inside the fixed column, the extrusion device is arranged on the movable column, the transmission device is arranged on the movable column and the fixed column, and the grinding and polishing device is arranged on the extrusion device.

[0010] Furthermore, the extrusion device includes a second sliding groove, a first spring, a connecting sliding column and a mounting plate. The extrusion device is arranged inside the fixed column, the connecting sliding column slides inside the second sliding groove, the first spring is arranged between the connecting sliding column and the second sliding groove, the mounting plate is arranged on the connecting sliding column, and a grinding and polishing device is provided on the connecting sliding column.

[0011] Further, the transmission device includes a transmission output device, a first belt, a first tensioning device, a first transmission pulley, a first connecting shaft, a first bevel gear, a second connecting shaft, a second bevel gear, a second transmission pulley, a second transmission belt, a second tensioning device, a third connecting shaft, a third transmission pulley and a second output gear. The transmission output device is arranged on a fixed column, the first tensioning device is arranged on a movable column, the first transmission pulley is arranged on the movable column, the first transmission pulley is connected to the first bevel gear through the first connecting shaft, the second bevel gear is connected to the second transmission pulley through the second connecting shaft, the second bevel gear and the first bevel gear are meshed, the second tensioning device is arranged on a mounting plate, the third connecting shaft is arranged on the mounting plate, the third transmission pulley and the second output gear are provided on the third connecting shaft, the first belt is arranged on the transmission output device, the first tensioning device and the first transmission pulley, the second transmission belt is arranged on the second transmission pulley, the second tensioning device and the third transmission pulley, the transmission column drives the transmission output device to rotate, and the second output gear drives the grinding and polishing device.

[0012] Furthermore, the transmission output device includes a mounting seat, a mounting ring and a second pulley, the mounting seat is set on the fixed column, the mounting ring is set on the mounting seat, the second pulley is set on the mounting ring, the second pulley slides on the transmission column, and the second pulley drives the first transmission pulley to rotate through the first belt.

[0013] Furthermore, the first tensioning device includes an installation sliding seat, a second spring, a sliding push plate and a first transmission pulley. The installation sliding seat is arranged on a movable column, the sliding push plate slides inside the installation sliding seat, a second spring is provided between the sliding push plate and the installation sliding seat, the first transmission pulley is arranged on the sliding push plate, and the first transmission pulley pushes the first belt to maintain the tension of the first belt.

[0014] Further, the second tensioning device includes a fixed mounting cylinder, a sliding mounting plate, a connecting mounting seat, a third spring and a fourth transmission pulley. The fixed mounting cylinder is arranged on the mounting plate, the sliding mounting plate slides inside the fixed mounting cylinder, the connecting mounting seat is arranged on the sliding mounting plate, the third spring is arranged on the connecting mounting seat and is placed inside the fixed mounting cylinder, the fourth transmission pulley is arranged on the connecting mounting seat, and the fourth transmission pulley tensions the second transmission belt. When the mounting plate and the movable column are fitted together, the third spring can no longer keep the second transmission belt tensioned through the fourth transmission pulley.

[0015] Furthermore, the grinding and polishing device includes a mounting cover, a second gear, a driving grinding wheel, a third gear, a transmission pulley group and a driven grinding wheel, the mounting cover is arranged on the mounting plate, the second gear is arranged on the mounting plate, the driving grinding wheel and the driven grinding wheel are arranged on the mounting cover, the third gear is arranged on the driving grinding wheel and meshes with the second gear, and the transmission pulley group is arranged on the driving grinding wheel and the driven grinding wheel.

[0016] The advantages of the present invention are:

[0017] The present invention adjusts the height of the grinding and polishing device through a height adjustment device, so that the grinding and polishing device is closely attached to the surface of the workpiece to be polished, and then the position adjustment device drives the height adjustment device to move, and the height adjustment device drives the grinding and polishing device to move. In the process of the position adjustment device driving the grinding and polishing device to move, the position adjustment device drives the grinding and polishing device to rotate through the output device and the transmission device, and the direction of rotation of the grinding and polishing device is opposite to the direction of movement of the height adjustment device to improve the polishing efficiency. The position adjustment device increases the polishing range. When the position adjustment device stops moving, the grinding and polishing device also stops polishing, thereby avoiding different degrees of polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0020] Figure 3 Schematic diagram of the structure of the position adjustment device of the present invention;

[0021] Figure 4 is a cross-sectional view of the position adjustment device of the present invention;

[0022] Figure 5 is a cross-sectional view of the height adjustment device of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the transmission device of the present invention;

[0024] Figure 7is a cross-sectional view of the transmission device of the present invention;

[0025] Figure 8 for Figure 7 Partially enlarged schematic diagram A;

[0026] Figure 9 It is a schematic structural diagram of the grinding and polishing device of the present invention;

[0027] Figure 10 is a cross-sectional view of the grinding and polishing device of the present invention;

[0028] Description of the marks in the figure:

[0029] Position adjustment device 1; slideway 1-1; rotating screw 1-2; moving slider 1-3; output device 2; first output gear 2-1; transmission column 2-2; receiving gear 2-3; height adjustment device 3; fixed column 3-1; servo motor 3-2; threaded rod 3-3; moving column 3-4; first sliding groove 3-5; center column 3-6; threaded hole 3-7; extrusion device 3-8; second sliding groove 3-8-1; first spring 3-8-2; connecting sliding column 3-8-3; mounting plate 3-8-4; transmission device 4; transmission output device 4-1; mounting seat 4-1-1; mounting ring 4-1-2; second pulley 4-1-3; first belt 4-2; first tensioning device 4-3; mounting sliding seat 4-3-1; second spring 4-3- 2; sliding push plate 4-3-3; first transmission pulley 4-3-4; first transmission pulley 4-4; first connecting shaft 4-5; first bevel gear 4-6; second connecting shaft 4-7; second bevel gear 4-8; second transmission pulley 4-9; second transmission belt 4-10; second tensioning device 4-11; fixed mounting cylinder 4-11-1; sliding mounting plate 4-11-2; connecting mounting seat 4-11-3; third spring 4-11-4; fourth transmission pulley 4-11-5; third connecting shaft 4-12; third transmission pulley 4-13; second output gear 4-14; grinding and polishing device 5; mounting cover 5-1; second gear 5-2; active grinding wheel 5-3; third gear 5-4; transmission pulley group 5-5; driven grinding wheel 5-6. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] like Figure 1-10 As shown, a polishing device for marine deck castings includes a position adjustment device 1, a height adjustment device 3 and a grinding and polishing device 5. The position adjustment device 1 is provided with a height adjustment device 3, and the grinding and polishing device 5 is arranged on the height adjustment device 3. The position adjustment device 1 is provided with an output device 2, and the height adjustment device 3 is provided with a transmission device 4. The position adjustment device 1 drives the transmission device 4 to rotate through the output device 2, and the rotating transmission device 4 drives the grinding and polishing device 5 to rotate, and the directions of the grinding and polishing device 5 and the position adjustment device 1 are opposite to enhance the polishing effect.

[0033] The height adjustment device 3 adjusts the height of the grinding and polishing device 5 so that the grinding and polishing device 5 is close to the surface of the polished workpiece, and then the position adjustment device 1 drives the height adjustment device 3 to move, and the height adjustment device 3 drives the grinding and polishing device 5 to move. In the process of the position adjustment device 1 driving the grinding and polishing device 5 to move, the position adjustment device 1 drives the grinding and polishing device 5 to rotate through the output device 2 and the transmission device 4, and the direction of rotation of the grinding and polishing device 5 is opposite to the direction of movement of the height adjustment device 3 to improve the polishing efficiency. The position adjustment device 1 increases the polishing range. When the position adjustment device 1 no longer moves, the grinding and polishing device 5 also stops polishing to avoid different degrees of polishing.

[0034] Among them, such as Figure 1-10 As shown, the position adjustment device 1 includes a slide 1-1, a rotating screw 1-2 and a movable slider 1-3. The movable slider 1-3 slides inside the slide 1-1. The rotating screw 1-2 is arranged inside the slide 1-1. The rotating screw 1-2 and the movable slider 1-3 cooperate with each other. The rotating screw 1-2 is provided with a matching servo motor. The output device 2 is arranged on the slide 1-1. The rotating screw 1-2 and the output device 2 are connected. The movable slider 1-3 drives the height adjustment device 3 to move.

[0035] The screw 1-2 is rotated to drive the movable slider 1-3 to slide inside the slideway 1-1.

[0036] Among them, such as Figure 1-10As shown, the output device 2 includes a first output gear 2-1, a transmission column 2-2 and a receiving gear 2-3. The first output gear 2-1 is arranged on the rotating screw 1-2, the transmission column 2-2 is arranged on the slide 1-1, and the receiving gear 2-3 is arranged on the transmission column 2-2. The receiving gear 2-3 and the first output gear 2-1 are engaged, and the transmission column 2-2 drives the transmission device 4.

[0037] The rotating screw 1-2 drives the receiving gear 2-3 to rotate through the first output gear 2-1, and the receiving gear 2-3 drives the transmission column 2-2 to rotate.

[0038] Among them, such as Figure 1-10 As shown, the height adjustment device 3 includes a fixed column 3-1, a servo motor 3-2, a threaded rod 3-3, a movable column 3-4, a first sliding groove 3-5, a center column 3-6, a threaded hole 3-7 and an extrusion device 3-8, the fixed column 3-1 is arranged on the movable slider 1-3, the servo motor 3-2 is arranged inside the fixed column 3-1, the threaded rod 3-3 is arranged on the servo motor 3-2, the movable column 3-4 is provided with a first sliding groove 3-5 and a center column 3-6, the movable column 3-4 slides on the fixed column 3-1 through the first sliding groove 3-5, the center column 3-6 is provided with a threaded hole 3-7 that cooperates with the threaded rod 3-3, the center column 3-6 slides inside the fixed column 3-1, the extrusion device 3-8 is arranged on the movable column 3-4, the transmission device 4 is arranged on the movable column 3-4 and the fixed column 3-1, and the grinding and polishing device 5 is arranged on the extrusion device 3-8.

[0039] The servo motor 3-2 drives the movable column 3-4 to slide on the fixed column 3-1 through the threaded rod 3-3, and the fixed column 3-1 drives the extrusion device 3-8 to move. The extrusion device 3-8 maintains a certain pressure between the grinding and polishing device 5 and the polished part.

[0040] Among them, such as Figure 1-10 As shown, the extrusion device 3-8 includes a second sliding groove 3-8-1, a first spring 3-8-2, a connecting sliding column 3-8-3 and a mounting plate 3-8-4. The extrusion device 3-8 is arranged inside the fixed column 3-1, the connecting sliding column 3-8-3 slides inside the second sliding groove 3-8-1, the first spring 3-8-2 is arranged between the connecting sliding column 3-8-3 and the second sliding groove 3-8-1, the mounting plate 3-8-4 is arranged on the connecting sliding column 3-8-3, and a grinding and polishing device 5 is provided on the connecting sliding column 3-8-3.

[0041] The first spring 3-8-2 applies pressure to the mounting plate 3-8-4 via the connecting sliding column 3-8-3.

[0042] Among them, such as Figure 1-10As shown, the transmission device 4 includes a transmission output device 4-1, a first belt 4-2, a first tensioning device 4-3, a first transmission pulley 4-4, a first connecting shaft 4-5, a first bevel gear 4-6, a second connecting shaft 4-7, a second bevel gear 4-8, a second transmission pulley 4-9, a second transmission belt 4-10, a second tensioning device 4-11, a third connecting shaft 4-12, a third transmission pulley 4-13 and a second output gear 4-14. The transmission output device 4-1 is arranged on the fixed column 3-1, the first tensioning device 4-3 is arranged on the movable column 3-4, the first transmission pulley 4-4 is arranged on the movable column 3-4, the first transmission pulley 4-4 is connected to the first bevel gear 4-6 through the first connecting shaft 4-5, and the second bevel gear 4- 8 is connected through the second connecting shaft 4-7 and the second transmission pulley 4-9, the second bevel gear 4-8 is meshed with the first bevel gear 4-6, the second tensioning device 4-11 is arranged on the mounting plate 3-8-4, the third connecting shaft 4-12 is arranged on the mounting plate 3-8-4, the third connecting shaft 4-12 is provided with the third transmission pulley 4-13 and the second output gear 4-14, the first belt 4-2 is arranged on the transmission output device 4-1, the first tensioning device 4-3 and the first transmission pulley 4-4, the second transmission belt 4-10 is arranged on the second transmission pulley 4-9, the second tensioning device 4-11 and the third transmission pulley 4-13, the transmission column 2-2 drives the transmission output device 4-1 to rotate, and the second output gear 4-14 drives the grinding and polishing device 5.

[0043] The moving fixed column 3-1 drives the transmission output device 4-1 to move together, and then the rotating transmission column 2-2 drives the transmission output device 4-1 to rotate. The transmission output device 4-1 drives the first transmission pulley 4-4 to rotate through the first belt 4-2. The first tensioning device 4-3 keeps the first belt 4-2 taut when the height adjustment device 3 is adjusted. The rotating first transmission pulley 4-4 drives the first bevel gear 4-6 to rotate through the first connecting shaft 4-5. The first bevel gear 4-6 is rotated through the second bevel gear 4-8 drives the second connecting shaft 4-7 to rotate, the second connecting shaft 4-7 drives the second transmission pulley 4-9 to rotate, the second transmission pulley 4-9 drives the third transmission pulley 4-13 to rotate through the second transmission belt 4-10, the third transmission pulley 4-13 drives the second output gear 4-14 to rotate through the third connecting shaft 4-12, the rotating second output gear 4-14 drives the grinding and polishing device 5 to polish the casting, and the second tensioning device 4-11 keeps the second transmission belt 4-10 tensioned when the extrusion device 3-8 contracts.

[0044] Among them, such as Figure 1-10As shown, the transmission output device 4-1 includes a mounting seat 4-1-1, a mounting ring 4-1-2 and a second pulley 4-1-3, the mounting seat 4-1-1 is arranged on the fixed column 3-1, the mounting ring 4-1-2 is arranged on the mounting seat 4-1-1, the second pulley 4-1-3 is arranged on the mounting ring 4-1-2, the second pulley 4-1-3 slides on the transmission column 2-2, and the second pulley 4-1-3 drives the first transmission pulley 4-4 to rotate through the first belt 4-2.

[0045] The mounting seat 4-1-1 drives the second pulley 4-1-3 to move through the mounting ring 4-1-2, and the transmission column 2-2 drives the second pulley 4-1-3 to rotate.

[0046] Among them, such as Figure 1-10 As shown, the first tensioning device 4-3 includes a mounting sliding seat 4-3-1, a second spring 4-3-2, a sliding push plate 4-3-3 and a first transfer pulley 4-3-4, the mounting sliding seat 4-3-1 is arranged on the moving column 3-4, the sliding push plate 4-3-3 slides inside the mounting sliding seat 4-3-1, a second spring 4-3-2 is provided between the sliding push plate 4-3-3 and the mounting sliding seat 4-3-1, the first transfer pulley 4-3-4 is arranged on the sliding push plate 4-3-3, and the first transfer pulley 4-3-4 pushes the first belt 4-2 to keep the first belt 4-2 tensioned.

[0047] The second spring 4-3-2 gives a thrust to the first transfer pulley 4-3-4 through the sliding push plate 4-3-3, and the first transfer pulley 4-3-4 pushes the first belt 4-2.

[0048] Among them, such as Figure 1-10 As shown, the second tensioning device 4-11 includes a fixed mounting cylinder 4-11-1, a sliding mounting plate 4-11-2, a connecting mounting seat 4-11-3, a third spring 4-11-4 and a fourth transmission pulley 4-11-5, the fixed mounting cylinder 4-11-1 is set on the mounting plate 3-8-4, the sliding mounting plate 4-11-2 slides inside the fixed mounting cylinder 4-11-1, and the connecting mounting seat 4-11-3 is set on the sliding mounting plate 4-11-2 The third spring 4-11-4 is arranged on the connecting mounting seat 4-11-3 which is placed inside the fixed mounting cylinder 4-11-1, and the fourth transmission pulley 4-11-5 is arranged on the connecting mounting seat 4-11-3. The fourth transmission pulley 4-11-5 makes the second transmission belt 4-10 tensioned. When the mounting plate 3-8-4 and the movable column 3-4 are fitted together, the third spring 4-11-4 can no longer keep the second transmission belt 4-10 tensioned through the fourth transmission pulley 4-11-5.

[0049] The third spring 4-11-4 pushes the connecting mounting seat 4-11-3 downwards, and the connecting mounting seat 4-11-3 pulls the second transmission belt 4-10 downwards through the fourth transmission pulley 4-11-5.

[0050] Among them, such as Figure 1-10 As shown, the grinding and polishing device 5 includes a mounting cover 5-1, a second gear 5-2, a driving grinding wheel 5-3, a third gear 5-4, a transmission pulley group 5-5 and a driven grinding wheel 5-6, the mounting cover 5-1 is arranged on the mounting plate 3-8-4, the second gear 5-2 is arranged on the mounting plate 3-8-4, the driving grinding wheel 5-3 and the driven grinding wheel 5-6 are arranged on the mounting cover 5-1, the third gear 5-4 is arranged on the driving grinding wheel 5-3 and meshed with the second gear 5-2, and the transmission pulley group 5-5 is arranged on the driving grinding wheel 5-3 and the driven grinding wheel 5-6.

[0051] The rotating output gear 4-14 drives the second gear 5-2 to rotate, the second gear 5-2 drives the third gear 5-4 to rotate, the third gear 5-4 drives the active grinding wheel 5-3 to rotate, and the active grinding wheel 5-3 drives the driven grinding wheel 5-6 to rotate through the transmission pulley group 5-5 for grinding and polishing.

[0052] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A polishing device for a marine deck casting, comprising a position adjustment device (1), a height adjustment device (3) and a grinding and polishing device (5), wherein the position adjustment device (1) is provided with the height adjustment device (3), and the grinding and polishing device (5) is provided on the height adjustment device (3), and is characterized in that: The position adjustment device (1) is provided with an output device (2), and the height adjustment device (3) is provided with a transmission device (4). The position adjustment device (1) drives the transmission device (4) to rotate through the output device (2). The rotating transmission device (4) drives the grinding and polishing device (5) to rotate. The grinding and polishing device (5) and the position adjustment device (1) rotate in opposite directions to enhance the polishing effect. The position adjustment device (1) includes a slideway (1-1), a rotating lead screw (1-2) and a movable slider (1-3); the movable slider (1-3) slides inside the slideway (1-1); the rotating lead screw (1-2) is arranged inside the slideway (1-1); the rotating lead screw (1-2) and the movable slider (1-3) cooperate; the rotating lead screw (1-2) is provided with a matching servo motor; the output device (2) is arranged on the slideway (1-1); the rotating lead screw (1-2) and the output device (2) are connected; and the movable slider (1-3) drives the height adjustment device (3) to move; The output device (2) comprises a first output gear (2-1), a transmission column (2-2) and a receiving gear (2-3); the first output gear (2-1) is arranged on the rotating screw (1-2); the transmission column (2-2) is arranged on the slideway (1-1); the receiving gear (2-3) is arranged on the transmission column (2-2); the receiving gear (2-3) and the first output gear (2-1) are meshed; and the transmission column (2-2) drives the transmission device (4); The height adjustment device (3) comprises a fixed column (3-1), a servo motor (3-2), a threaded rod (3-3), a movable column (3-4), a first sliding groove (3-5), a center column (3-6), a threaded hole (3-7) and an extrusion device (3-8), wherein the fixed column (3-1) is arranged on the movable slider (1-3), the servo motor (3-2) is arranged inside the fixed column (3-1), the threaded rod (3-3) is arranged on the servo motor (3-2), and the movable column (3-4) is provided with a first sliding groove ( 3-5) and a center column (3-6), the movable column (3-4) slides on the fixed column (3-1) through the first sliding groove (3-5), the center column (3-6) is provided with a threaded hole (3-7) that matches the threaded rod (3-3), the center column (3-6) slides inside the fixed column (3-1), the extrusion device (3-8) is arranged on the movable column (3-4), the transmission device (4) is arranged on the movable column (3-4) and the fixed column (3-1), and the grinding and polishing device (5) is arranged on the extrusion device (3-8); The transmission device (4) comprises a transmission output device (4-1), a first belt (4-2), a first tensioning device (4-3), a first transmission pulley (4-4), a first connecting shaft (4-5), a first bevel gear (4-6), a second connecting shaft (4-7), a second bevel gear (4-8), a second transmission pulley (4-9), a second transmission belt (4-10), a second tensioning device (4-11), a third connecting shaft (4-12), a third transmission pulley (4-13) and a second output gear (4-14). The transmission output device (4-1) is arranged on a fixed column (3-1), the first tensioning device (4-3) is arranged on a movable column (3-4), the first transmission pulley (4-4) is arranged on the movable column (3-4), the first transmission pulley (4-4) is connected to the first bevel gear (4-6) via the first connecting shaft (4-5), and the second bevel gear (4-8) is connected to the second transmission pulley (4-9). 8) connected via a second connecting shaft (4-7) and a second transmission pulley (4-9), the second bevel gear (4-8) and the first bevel gear (4-6) are meshed, the second tensioning device (4-11) is arranged on the mounting plate (3-8-4), the third connecting shaft (4-12) is arranged on the mounting plate (3-8-4), the third connecting shaft (4-12) is provided with a third transmission pulley (4-13) and a second output gear (4-14), the first belt (4-2) is arranged on the transmission output device (4-1), the first tensioning device (4-3) and the first transmission pulley (4-4), the second transmission belt (4-10) is arranged on the second transmission pulley (4-9), the second tensioning device (4-11) and the third transmission pulley (4-13), the transmission column (2-2) drives the transmission output device (4-1) to rotate, and the second output gear (4-14) drives the grinding and polishing device (5); The grinding and polishing device (5) comprises a mounting cover (5-1), a second gear (5-2), a driving grinding wheel (5-3), a third gear (5-4), a transmission pulley set (5-5) and a driven grinding wheel (5-6); the mounting cover (5-1) is arranged on a mounting plate (3-8-4); the second gear (5-2) is arranged on the mounting plate (3-8-4); the driving grinding wheel (5-3) and the driven grinding wheel (5-6) are arranged on the mounting cover (5-1); the third gear (5-4) is arranged on the driving grinding wheel (5-3) and meshes with the second gear (5-2); and the transmission pulley set (5-5) is arranged on the driving grinding wheel (5-3) and the driven grinding wheel (5-6).

2. A marine deck casting polishing device according to claim 1, characterized in that: The extrusion device (3-8) comprises a second sliding groove (3-8-1), a first spring (3-8-2), a connecting sliding column (3-8-3) and a mounting plate (3-8-4); the extrusion device (3-8) is arranged inside the fixed column (3-1); the connecting sliding column (3-8-3) slides inside the second sliding groove (3-8-1); the first spring (3-8-2) is arranged between the connecting sliding column (3-8-3) and the second sliding groove (3-8-1); the mounting plate (3-8-4) is arranged on the connecting sliding column (3-8-3); and the connecting sliding column (3-8-3) is provided with a grinding and polishing device (5).

3. A marine deck casting polishing device according to claim 1, characterized in that: The transmission output device (4-1) comprises a mounting seat (4-1-1), a mounting ring (4-1-2) and a second pulley (4-1-3); the mounting seat (4-1-1) is arranged on a fixed column (3-1); the mounting ring (4-1-2) is arranged on the mounting seat (4-1-1); the second pulley (4-1-3) is arranged on the mounting ring (4-1-2); the second pulley (4-1-3) slides on the transmission column (2-2); and the second pulley (4-1-3) drives the first transmission pulley (4-4) to rotate via the first belt (4-2).

4. A marine deck casting polishing device according to claim 1, characterized in that: The first tensioning device (4-3) comprises a mounting sliding seat (4-3-1), a second spring (4-3-2), a sliding push plate (4-3-3) and a first transmission pulley (4-3-4); the mounting sliding seat (4-3-1) is arranged on a movable column (3-4); the sliding push plate (4-3-3) slides inside the mounting sliding seat (4-3-1); a second spring (4-3-2) is provided between the sliding push plate (4-3-3) and the mounting sliding seat (4-3-1); the first transmission pulley (4-3-4) is arranged on the sliding push plate (4-3-3); and the first transmission pulley (4-3-4) pushes the first belt (4-2) to maintain the tension of the first belt (4-2).

5. The marine deck casting polishing device according to claim 1, characterized in that: The second tensioning device (4-11) includes a fixed mounting cylinder (4-11-1), a sliding mounting plate (4-11-2), a connecting mounting seat (4-11-3), a third spring (4-11-4) and a fourth transmission pulley (4-11-5), wherein the fixed mounting cylinder (4-11-1) is arranged on the mounting plate (3-8-4), the sliding mounting plate (4-11-2) slides inside the fixed mounting cylinder (4-11-1), the connecting mounting seat (4-11-3) is arranged on the sliding mounting plate (4-11-2), and the third spring (4-11-4) and the fourth transmission pulley (4-11-5) are provided. Three springs (4-11-4) are arranged on the connecting mounting seat (4-11-3) and are placed inside the fixed mounting cylinder (4-11-1). The fourth transmission pulley (4-11-5) is arranged on the connecting mounting seat (4-11-3). The fourth transmission pulley (4-11-5) tensions the second transmission belt (4-10). When the mounting plate (3-8-4) and the movable column (3-4) are fitted together, the third spring (4-11-4) can no longer keep the second transmission belt (4-10) tensioned through the fourth transmission pulley (4-11-5).

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