A multi-axis linkage polishing device for a piston rod of a marine diesel engine

Abstract

The utility model discloses a marine large -scale diesel engine piston rod multiaxis linkage polishing device, including frame, the inner wall rotation of frame is connected with the crankshaft, one end of crankshaft extends to the outside of frame and is fixedly connected with first gear, the lateral wall of frame is fixedly connected with the fixed frame, the lateral wall of fixed frame is fixedly connected with motor. The utility model discloses motor is installed in the lateral wall of frame through fixed frame, and the output shaft drives second gear rotation after starting, and through the meshing drive of first gear and second gear, drive the rotation of crank in frame, and the rotary motion of crank is converted into the compound motion of multiple rotary cylinders, and the rotary cylinder is hinged through the hinged structure of connecting plate and connecting seat simultaneously, drives the reciprocating linear motion of polishing sleeve along piston rod axial, forms multiaxis linkage track, ensures that polishing ring is fully covered polishing to the surface of piston rod, can make line multiple piston rod synchronous polishing processing, can improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of marine large diesel engine piston rod processing technology, specifically a multi-axis linkage polishing device for marine large diesel engine piston rods. Background Technology

[0002] The piston rod of a large marine diesel engine is one of the important components of a crosshead diesel engine. It is usually made of forged steel and has sufficient compressive strength and rod stability to withstand the pressure during operation. During the operation of the diesel engine, the pressure generated by the combustion gas at the top of the piston is transmitted to the piston rod through the internal mechanism of the piston. The piston rod then transmits this force to the crosshead, and then through the crosshead and connecting rod and other components, the power is transmitted to the crankshaft, and finally converted into the rotational motion of the crankshaft, realizing the conversion of the heat energy generated by combustion into mechanical energy output.

[0003] In the prior art, during the processing of piston rods for large marine diesel engines, the piston rod body needs to be polished to reduce wear during subsequent use. However, the polishing process is inefficient and affects processing efficiency. Therefore, this application designs a multi-axis linkage polishing device for piston rods of large marine diesel engines. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-axis linkage polishing device for piston rods of large marine diesel engines, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution.

[0006] This utility model provides a multi-axis linkage polishing device for piston rods of large marine diesel engines, including a frame. A crankshaft is rotatably connected to the inner wall of the frame. One end of the crankshaft extends to the outer side of the frame and is fixedly connected to a first gear. A fixing frame is fixedly connected to the side wall of the frame. A motor is fixedly connected to the side wall of the fixing frame. The output shaft of the motor extends into the interior of the fixing frame and is fixedly fitted with a second gear. The first gear and the second gear are meshed with each other. Multiple rotating cylinders are rotatably fitted on the shaft of the crankshaft. Connecting plates are respectively hinged to the cylinder walls of the multiple rotating cylinders. Connecting seats are respectively hinged to the ends of the multiple connecting plates away from the rotating cylinders. Polishing sleeves are fixedly connected to the ends of the multiple connecting seats away from the connecting plates. Multiple polishing rings are fixedly connected to the inner wall of the polishing sleeves.

[0007] Preferably, the inner walls of the plurality of polishing rings are respectively provided with rounded corners.

[0008] Preferably, a connecting sleeve is slidably fitted on the wall of each of the plurality of polishing sleeves, and a connecting frame is fixedly connected to both sides of the connecting sleeve, and the connecting frame is fixedly connected to the inner wall of the frame.

[0009] Preferably, the frame has a rectangular slot on the inner wall of the connecting frame, and a vibration damping rubber pad is placed on the inner wall of the rectangular slot. The side wall of the vibration damping rubber pad is attached to the side wall of the connecting frame.

[0010] Preferably, the inner wall of the connecting frame has a strip-shaped opening.

[0011] Preferably, the crankshaft has rounded corners on both the upper and lower sides.

[0012] Preferably, the crankshaft has an annular groove on its shaft body, and a stabilizing slip ring is fixedly connected to the inner wall of the rotating cylinder, the stabilizing slip ring being slidably disposed on the inner wall of the annular groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This marine large diesel engine piston rod multi-axis linkage polishing device is mounted on the side wall of the frame via a motor and a fixed bracket. After starting, the output shaft drives the second gear to rotate. Through the meshing transmission of the first and second gears, the crankshaft is driven to rotate within the frame. The rotational motion of the crankshaft is converted into the compound motion of multiple rotating drums. The rotating drums, through the hinged structure of the connecting plate and the connecting seat, drive the polishing sleeve to reciprocate linearly along the piston rod axis, forming a multi-axis linkage trajectory. This ensures that the polishing ring fully covers the surface of the piston rod, allowing multiple piston rods to be polished simultaneously, thus improving work efficiency.

[0015] 2. The multi-axis linkage polishing device for the piston rod of the large marine diesel engine features multiple polishing rings on the inner wall of the polishing sleeve with rounded corners, which reduces stress concentration during polishing and prevents scratches on the piston rod surface. When the polishing sleeve swings with the connecting plate, the polishing rings flexibly contact the piston rod. The polishing pressure and precision are controlled by adjusting the crankshaft speed and swing amplitude. The connecting sleeve is fitted outside the polishing sleeve and fixed to the frame by the connecting frame, providing guide support for the polishing sleeve and ensuring its smooth movement along the piston rod axis.

[0016] 3. The marine large diesel engine piston rod multi-axis linkage polishing device uses a rectangular slot on the inner wall of the frame to place vibration damping rubber pads that fit against the side wall of the connecting frame, absorbing the vibration generated during the polishing process, reducing equipment shaking and noise. The rounded corners on the upper and lower sides of the crankshaft reduce air resistance and mechanical impact during rotation, improve the smoothness of crankshaft rotation, and ensure the synchronization accuracy of multi-axis linkage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0019] Figure 3 In this utility model Figure 2 A magnified schematic diagram of part A of the structure;

[0020] Figure 4 for Figure 1 A partial structural cross-sectional view of the crankshaft.

[0021] In the diagram: 1. Frame, 2. Crankshaft, 3. First gear, 4. Fixing frame, 5. Motor, 6. Second gear, 7. Rotary drum, 8. Connecting plate, 9. Connecting seat, 10. Polishing sleeve, 11. Polishing ring, 12. Connecting sleeve frame, 13. Connecting frame, 14. Vibration damping rubber pad, 15. Stabilizing slip ring. Detailed Implementation

[0022] A multi-axis linkage polishing device for piston rods of large marine diesel engines, such as Figures 1-4 As shown, the machine includes a frame 1, a crankshaft 2 rotatably connected to the inner wall of the frame 1, one end of the crankshaft 2 extending to the outer side of the frame 1 and fixedly connected to a first gear 3, a fixed frame 4 fixedly connected to the side wall of the frame 1, a motor 5 fixedly connected to the side wall of the fixed frame 4, the output shaft of the motor 5 extending into the interior of the fixed frame 4 and fixedly fitted with a second gear 6, the first gear 3 and the second gear 6 meshing with each other, a plurality of rotating cylinders 7 rotatably fitted on the shaft of the crankshaft 2, connecting plates 8 respectively hinged to the cylinder walls of the plurality of rotating cylinders 7, connecting seats 9 respectively hinged to the ends of the plurality of connecting plates 8 away from the rotating cylinders 7, polishing sleeves 10 fixedly connected to the ends of the plurality of connecting seats 9 away from the connecting plates 8, and a plurality of polishing rings 11 fixedly connected to the inner wall of the polishing sleeves 10.

[0023] The inner walls of multiple polishing rings 11 are respectively provided with rounded corners. The walls of multiple polishing sleeves 10 are respectively slidably fitted with connecting sleeves 12. Connecting frames 13 are respectively fixedly connected to both sides of the connecting sleeves 12. The connecting frames 13 are fixedly connected to the inner wall of the frame 1. The inner wall of the frame 1 located on the connecting frame 13 is provided with a rectangular slot. The inner wall of the frame 1 located on the rectangular slot is provided with a vibration damping rubber pad 14. The side wall of the vibration damping rubber pad 14 is fitted to the side wall of the connecting frame 13. The inner wall of the connecting frame 13 is provided with a strip-shaped opening. The upper and lower sides of the crankshaft 2 are respectively provided with rounded corners.

[0024] In summary: The motor 5 is mounted on the side wall of the frame 1 via the fixed bracket 4. After startup, the output shaft drives the second gear 6 to rotate. Through the meshing transmission of the first gear 3 and the second gear 6, the crankshaft 2 is driven to rotate within the frame 1. The rotational motion of the crankshaft 2 is converted into the compound motion of multiple rotating drums 7. The rotating drums 7 simultaneously drive the polishing sleeve 10 to reciprocate linearly along the piston rod axis through the hinge structure of the connecting plate 8 and the connecting seat 9, forming a multi-axis linkage trajectory. This ensures that the polishing ring 11 fully covers the surface of the piston rod for polishing, allowing multiple piston rods to be polished simultaneously, thus improving work efficiency.

[0025] The polishing rings 11 on the inner wall of the polishing sleeve 10 are rounded to reduce stress concentration during polishing and avoid scratching the piston rod surface. When the polishing sleeve 10 swings with the connecting plate 8, the polishing rings 11 flexibly contact the piston rod. The polishing pressure and precision are controlled by adjusting the rotation speed and swing amplitude of the crankshaft 2. The connecting sleeve 12 is sleeved on the outside of the polishing sleeve 10 and fixed to the frame 1 by the connecting frame 13 to provide guide support for the polishing sleeve 10 and ensure that it moves smoothly along the piston rod axis.

[0026] Vibration-damping rubber pads 14 are placed in the rectangular slots on the inner wall of the frame 1, which fit against the side wall of the connecting frame 13 to absorb the vibration generated during the polishing process, reduce equipment shaking and noise. The rounded corners on the upper and lower sides of the crankshaft 2 reduce air resistance and mechanical impact during rotation, improve the smoothness of crankshaft 2 rotation, and ensure the synchronization accuracy of multi-axis linkage.

[0027] To improve the stability of the rotating drum 7 on the crankshaft 2, such as Figures 1-4 As shown, an annular groove is provided on the shaft of crankshaft 2, and a stabilizing slip ring 15 is fixedly connected to the inner wall of the rotating cylinder 7. The stabilizing slip ring 15 is slidably disposed on the inner wall of the annular groove.

[0028] The rotating drum 7 slides in conjunction with the annular groove of the crankshaft 2 through the stabilizing slip ring 15 on its inner wall, and moves in a circular motion around its axis as the crankshaft 2 rotates, which can improve the stability of the rotating drum 7 on the crankshaft 2.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-axis linkage polishing device for piston rods of large marine diesel engines, comprising a frame (1), characterized in that: A crankshaft (2) is rotatably connected to the inner wall of the frame (1). One end of the crankshaft (2) extends to the outside of the frame (1) and is fixedly connected to a first gear (3). A fixed frame (4) is fixedly connected to the side wall of the frame (1). A motor (5) is fixedly connected to the side wall of the fixed frame (4). The output shaft of the motor (5) extends into the interior of the fixed frame (4) and is fixedly fitted with a second gear (6). The first gear (3) and the second gear (6) mesh with each other. Multiple rotating cylinders (7) are rotatably fitted on the shaft of the crankshaft (2). Connecting plates (8) are respectively hinged on the cylinder walls of the multiple rotating cylinders (7). Connecting seats (9) are respectively hinged to the ends of the multiple connecting plates (8) away from the rotating cylinders (7). Polishing sleeves (10) are fixedly connected to the ends of the multiple connecting seats (9) away from the connecting plates (8). Multiple polishing rings (11) are fixedly connected to the inner wall of the polishing sleeves (10).

2. The multi-axis linkage polishing device for marine large diesel engine piston rods according to claim 1, characterized in that: The inner walls of the plurality of polishing rings (11) are respectively provided with rounded corners.

3. The multi-axis linkage polishing device for marine large diesel engine piston rods according to claim 1, characterized in that: A connecting sleeve (12) is slidably fitted on the cylinder wall of a plurality of polishing sleeves (10), and a connecting frame (13) is fixedly connected to both sides of the connecting sleeve (12), and the connecting frame (13) is fixedly connected to the inner wall of the frame (1).

4. The multi-axis linkage polishing device for marine large diesel engine piston rods according to claim 1, characterized in that: The frame (1) has a rectangular slot on the inner wall of the connecting frame (13), and a vibration damping rubber pad (14) is placed on the inner wall of the rectangular slot of the frame (1). The side wall of the vibration damping rubber pad (14) is attached to the side wall of the connecting frame (13).

5. The multi-axis linkage polishing device for marine large diesel engine piston rods according to claim 3, characterized in that: The inner wall of the connecting frame (13) has a strip-shaped opening.

6. The multi-axis linkage polishing device for piston rods of large marine diesel engines according to claim 1, characterized in that: The crankshaft (2) has rounded corners on both the upper and lower sides.

7. The multi-axis linkage polishing device for marine large diesel engine piston rods according to claim 1, characterized in that: The crankshaft (2) has an annular groove on its shaft body, and a stabilizing slip ring (15) is fixedly connected to the inner wall of the rotating cylinder (7). The stabilizing slip ring (15) is slidably disposed on the inner wall of the annular groove.

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