A device and method for assisting in the removal of a marine engine piston ring

Abstract

The application relates to an auxiliary dismounting device and method for a marine engine piston ring. The dismounting device comprises a movable base, a driving assembly arranged on the movable base, a rotating shaft connected with the driving assembly, and a toothed roller fixedly sleeved on the rotating shaft; a first limiting piece and a second limiting piece are arranged on the movable base, a plurality of first sliding blocks are movably arranged on the first limiting piece from top to bottom, a plurality of second sliding blocks are movably arranged on the second limiting piece from top to bottom, and the first sliding blocks and the second sliding blocks one-to-one correspond to form a plurality of dismounting assemblies; the opening position of the piston ring can be adjusted during the dismounting process, so that the dismounting of a plurality of piston rings on the piston can be completed at one time, the automatic degree of the dismounting process is high, and manual operation is easy.

Description

Technical Field

[0001] This invention belongs to the field of marine engine technology, specifically relating to an auxiliary disassembly device and method for marine engine piston rings. Background Technology

[0002] Marine engines, as the power plant of ships, directly affect the navigational safety of vessels. During the use of marine engines, piston ring wear and damage are common problems. When piston rings need replacement, disassembly is an important step in the maintenance process.

[0003] Piston ring removal is usually done with hand-held calipers. This tool is suitable for removing piston rings from small engines. However, because the piston rings of large marine engines are larger, small tools are more laborious, and the piston rings are also heavier. Sometimes, lifting equipment is needed, making the removal of piston rings from large engines more difficult. Summary of the Invention

[0004] The purpose of this invention is to provide an auxiliary disassembly device and method for marine engine piston rings in order to solve the problems mentioned in the background art.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] An auxiliary disassembly device for marine engine piston rings includes a movable base, a drive assembly on the movable base, a rotating shaft connected to the drive assembly, and a toothed roller fixedly sleeved on the rotating shaft.

[0007] The movable base is provided with a first limiting component and a second limiting component. The first limiting component has several first sliders that move from top to bottom. The second limiting component has several second sliders that move from top to bottom. The first sliders and second sliders correspond one-to-one to form several disassembly combinations.

[0008] Both the first and second sliders have continuous toothed grooves on one side corresponding to the toothed roller, and the ends of the first and second sliders are fixed with a first limiting head.

[0009] Place the movable base on one side of the marine engine piston. Use the drive assembly to move sliders one and two to surround the piston. Use the two limit heads on sliders one and two to hold the opening of the piston ring. Rotate sliders one and two in the opposite direction to widen the opening of the piston ring. Move sliders one and two to disengage the piston ring from the piston.

[0010] Preferably, the first limiting component and the second limiting component each include a first limiting rod and a second limiting rod, and the first limiting rod and the second limiting rod are movably provided with a plurality of locking blocks from top to bottom, and the first slider and the second slider are movably connected to the corresponding locking blocks.

[0011] Preferably, the drive assembly includes a speed reducer fixedly mounted on a movable base, the rotating shaft is connected to the output shaft of the speed reducer, and the input end of the speed reducer is connected to a drive motor.

[0012] Preferably, the height of slider 1 in the same combination is higher than the height of slider 2, and the sum of the thickness values ​​of slider 1 and slider 2 is less than the thickness value of piston ring.

[0013] Preferably, two support plates are rotatably mounted on the movable base, and the two support plates are rotatably connected to the first limit rod and the second limit rod respectively, and the locking block is rotatably sleeved on the first limit rod / second limit rod.

[0014] Preferably, the ends of both the first slider and the second slider are fixed with a second limiting head. When the first slider and the second slider surround the piston, the second limiting head enters the opening of the piston ring, so that the piston ring rotates synchronously with the first slider / second slider.

[0015] Preferably, a rotating wheel is rotatably mounted on the locking block, and a crank is rotatably connected to the non-center position of the rotating wheel. An impact member is rotatably connected to the crank. A track for limiting the impact member is fixed on the locking block. When the first slider / second slider moves relative to the locking block, it drives the rotating wheel to rotate, causing the crank to drive the impact member to reciprocate and impact the piston ring, causing the piston ring to loosen between the piston and the piston, and causing the piston ring to be squeezed towards the direction where the first slider and second slider collide.

[0016] Preferably, the impact element is a telescopic rod.

[0017] Preferably, a load-bearing plate is rotatably mounted on the block, and a coil spring is provided between the load-bearing plate and the block. After the piston ring is separated from the piston, it contacts the load-bearing plate to prevent the piston ring from falling off.

[0018] A method for assisted removal of piston rings for marine engines includes the following steps:

[0019] S1: Place the piston vertically and move the movable base to one side of the piston so that sliders one and two are facing the piston.

[0020] S2: The drive assembly drives the toothed roller to rotate, which in turn drives the first and second sliders to rotate, so that the first and second sliders surround the piston, and the first limit head on the first and second sliders enters the opening of the piston ring.

[0021] S3: Reverse rotation of the toothed roller causes sliders one and two to widen the opening of the piston ring and move the piston ring away from the piston.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. This invention can adjust the opening position of the piston rings during the disassembly process, thereby enabling the disassembly of multiple piston rings on the piston in one go. The disassembly process is highly automated and easy to operate manually.

[0024] 2. This invention is designed for piston rings of large marine engines and can be adjusted according to different diameters of the piston rings, making it highly adaptable.

[0025] 3. This invention can support the piston rings after disassembly, preventing them from falling off and being damaged. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the second perspective structure of the present invention;

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the working principle of the present invention in a top-down view;

[0030] Figure 5 This is a schematic diagram illustrating the working principle of the invention in the side-view state.

[0031] In the diagram: 1. Movable base; 2. Toothed roller; 3. Limiting rod 1; 4. Limiting rod 2; 5. Locking block; 6. Slider 1; 7. Slider 2; 8. Tooth groove; 9. Limiting head 1; 10. Reducer; 11. Drive motor; 12. Support plate; 13. Limiting head 2; 14. Rotary wheel; 15. Crank; 16. Impact component; 17. Track; 18. Load-bearing plate; 19. Piston ring. Detailed Implementation

[0032] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] Example 1

[0034] like Figure 1-5As shown, an auxiliary disassembly device for marine engine piston rings includes a movable base 1, which includes a base plate, and casters are provided at the four corners of the bottom of the base plate. A bracket is fixedly mounted on the base plate.

[0035] A drive assembly is mounted on the support frame. The drive assembly includes a reducer 10 fixedly mounted on the support frame, and a rotating shaft is fixedly connected to the output shaft of the reducer 10. A drive motor 11 is fixedly connected to the input end of the reducer 10. The drive motor 11 drives the toothed roller 2 to rotate through the reducer 10. The reducer 10 reduces the speed of the drive motor 11, which can increase the torque of the toothed roller 2. The toothed roller 2 is fixedly sleeved on the rotating shaft. The toothed roller 2 can be composed of several gears arranged together, or it can be made by cutting teeth from a single roller.

[0036] Two support plates 12 are rotatably mounted on the bracket. A first limiting rod 3 and a second limiting rod 4 are rotatably mounted on each support plate 12. Several locking blocks 5 are movably arranged from top to bottom on the first limiting rod 3 and the second limiting rod 4. A first slider 6 slides on the locking block 5 on the first limiting rod 3, and a second slider 7 slides on the locking block 5 on the second limiting rod 4. From top to bottom, one first slider 6 and one second slider 7 are matched one-to-one to form several detachable combinations. The position of the locking blocks 5 can be controlled by rotating the support plate 12, and the angle of the first slider 6 / second slider 7 can be controlled by rotating the locking blocks 5, thus allowing the device to be used with pistons of different diameters.

[0037] Both slider 6 and slider 7 have continuous toothed grooves 8 on one side corresponding to the toothed roller 2, and a limiting head 9 is fixedly provided at the end of slider 6 and slider 7. When the toothed roller 2 rotates, it drives slider 6 and slider 7 to move relative to the locking block 5 through the toothed grooves 8, so that slider 6 and slider 7 in the same group surround the piston.

[0038] It should be noted that the piston is placed vertically, and this device is placed to one side of the piston, so that slider 6 and slider 7 are directly opposite the piston. By adjusting the position of slider 6 and slider 7, they can be adapted to fit the size of the piston.

[0039] Next, move the locking block 5 up and down to adjust the height of slider 6 and slider 7 so that each disassembly assembly corresponds to a different piston ring 19. After adjustment, tighten the locking block 5 using the fastening bolts on the locking block 5.

[0040] During disassembly, the drive assembly uses sliders 6 and 7 to surround the piston. The rotation centers of sliders 6 and 7 are not aligned with the piston's axis, and sliders 6 and 7 possess a degree of elasticity, causing deformation during the process of surrounding the piston ring 19. When the two limiting heads 9 on sliders 6 and 7 move to the opening of the piston ring 19, the deformation of sliders 6 and 7 decreases, and the two limiting heads 9 enter and lock the opening of the piston ring 19. Reversing the rotation of sliders 6 and 7 further expands the opening of the piston ring 19. At this point, the size of the piston ring 19 is larger than the size of the piston groove, allowing it to be freely removed from the piston. The piston ring 19 can be disengaged from the piston by moving the base plate.

[0041] Furthermore, the height of slider 6 in the same combination is higher than that of slider 7, and there is no interference between slider 6 and slider 7, which can be applied to piston rings 19 of different diameters.

[0042] The sum of the thicknesses of slider 6 and slider 7 is less than the thickness of piston ring 19. Slider 6 and slider 7 can enter the piston groove where piston ring 19 is installed at the same time, allowing limit head 9 to smoothly enter the opening of piston ring 19.

[0043] Furthermore, the ends of both slider 6 and slider 7 are fixed with limit heads 13.

[0044] It is important to note that because the opening positions of each piston ring 19 are different, if multiple piston rings 19 are to be removed simultaneously, their opening positions need to be moved to the same position. With the second limiting head 13 in place, when the first slider 6 and the second slider 7 surround the piston, the second limiting head 13 enters the opening of the piston ring 19, causing the piston ring 19 to rotate within the piston groove until all the openings of the piston ring 19 are rotated to the same position. At this point, after the first slider 6 and the second slider 7 collide, the first limiting head 9 enters the opening of the piston ring 19, exerting a pulling force on the opening of the piston ring 19.

[0045] Furthermore, a rotating wheel 14 is rotatably mounted on the locking block 5. A crank 15 is rotatably connected to the non-central position of the rotating wheel 14. An impact member 16 is rotatably connected to the crank 15. A track 17 is fixedly mounted on the locking block 5 to limit the impact member 16. When the first slider 6 and the second slider 7 move relative to the locking block 5, they drive the rotating wheel 14 to rotate, causing the crank 15 to drive the impact member 16 to reciprocate and impact the piston ring 19. This loosens the piston ring 19 from the piston, facilitating the adjustment of the piston ring 19's position. The impact of the impact member 16 also causes the piston ring 19 to collide with the first slider 6 and the second slider 7, facilitating the smooth entry of the first limiting head 9 into the opening.

[0046] Among them, the impact member 16 is a telescopic rod, and a return spring is provided inside the telescopic rod, which can provide a certain buffer during the impact with the piston ring 19, so as to avoid damage to the piston ring 19. Moreover, it can avoid frequent replacement of the telescopic rod when dealing with piston rings 19 of different sizes, thus improving the applicability of this device.

[0047] At the same time, the extension and retraction direction of the telescopic rod is biased towards the movement direction of slider 6 and slider 7, forming a side impact with piston ring 19, which further facilitates the rotation of piston ring 19.

[0048] Furthermore, a load-bearing plate 18 is rotatably mounted on the block 5, and a coil spring is provided between the load-bearing plate 18 and the block 5. After the piston ring 19 is separated from the piston, it moves downward due to its own gravity and comes into contact with the load-bearing plate 18.

[0049] The coil spring allows the load-bearing plate 18 to be rotated to control its position when in contact with the piston, providing vertical load-bearing force without causing lateral impact with the piston and avoiding damage to the piston.

[0050] A method for assisted removal of piston rings for marine engines includes the following steps:

[0051] S1: Place the piston vertically and move the movable base 1 to one side of the piston so that slider 6 and slider 7 are facing the piston.

[0052] S2: The drive assembly drives the toothed roller 2 to rotate, and the toothed roller 2 drives each of the first slider 6 and the second slider 7 to rotate, so that the first slider 6 and the second slider 7 surround the piston, and the first limit head 9 on the first slider 6 and the second slider 7 enters the opening of the piston ring.

[0053] S3: Rotate the toothed roller 2 in the opposite direction. Slider 6 and slider 7 will widen the opening of the piston ring and drive the piston ring away from the piston.

[0054] The embodiments described above are merely examples of several implementations of 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 modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An auxiliary device for disassembling piston rings of a marine engine, characterized in that, Includes a movable base (1), on which a drive assembly is provided, the drive assembly is connected to a rotating shaft, and a toothed roller (2) is fixedly sleeved on the rotating shaft. The movable base (1) is provided with a first limiting component and a second limiting component. The first limiting component is provided with a number of first sliders (6) moving from top to bottom. The second limiting component is provided with a number of second sliders (7) moving from top to bottom. The number of first sliders (6) and second sliders (7) correspond one-to-one to form a number of disassembly combinations. Among them, the first slider (6) and the second slider (7) are provided with continuous tooth grooves (8) on one side of the toothed roller (2), and the ends of the first slider (6) and the second slider (7) are fixedly provided with a first limiting head (9). Place the movable base (1) on one side of the marine engine piston. Use the drive assembly to drive the first slider (6) and the second slider (7) to surround the piston. Use the two first limit heads (9) on the first slider (6) and the second slider (7) to lock the opening of the piston ring. Rotate the first slider (6) and the second slider (7) in the opposite direction to expand the opening of the piston ring. Move the first slider (6) and the second slider (7) to make the piston ring separate from the piston. The first limiting component and the second limiting component respectively include a first limiting rod (3) and a second limiting rod (4). The first limiting rod (3) and the second limiting rod (4) are movably provided with several locking blocks (5) from top to bottom. The first slider (6) and the second slider (7) are movably connected to the corresponding locking blocks (5). The height of slider 1 (6) in the same combination is higher than the height of slider 2 (7), and the sum of the thickness values ​​of slider 1 (6) and slider 2 (7) is less than the thickness value of piston ring; Two support plates (12) are rotatably installed on the mobile base (1). The two support plates (12) are rotatably connected to the first limiting rod (3) and the second limiting rod (4) respectively. The locking block (5) is rotatably sleeved on the first limiting rod (3) or the second limiting rod (4). The ends of the first slider (6) and the second slider (7) are both fixed with a second limiting head (13). When the first slider (6) or the second slider (7) surrounds the piston, the second limiting head (13) enters the opening of the piston ring, so that the piston ring rotates synchronously with the first slider (6) or the second slider (7). A rotating wheel (14) is rotatably mounted on the block (5). A crank (15) is rotatably connected to the non-center position of the rotating wheel (14). An impact member (16) is rotatably connected to the crank (15). A track (17) for limiting the impact member (16) is fixedly mounted on the block (5). When the first slider (6) or the second slider (7) moves relative to the block (5), it drives the rotating wheel (14) to rotate, causing the crank (15) to drive the impact member (16) to reciprocate and impact the piston ring, causing the piston ring to loosen between the piston and the piston, and causing the piston ring to be squeezed towards the direction where the first slider (6) and the second slider (7) collide.

2. The auxiliary disassembly device for marine engine piston rings according to claim 1, characterized in that, The drive assembly includes a speed reducer (10) fixed on a movable base (1), the rotating shaft is connected to the output shaft of the speed reducer (10), and the input end of the speed reducer (10) is connected to a drive motor (11).

3. The auxiliary disassembly device for marine engine piston rings according to claim 1, characterized in that, The impact component (16) is a telescopic rod.

4. The auxiliary disassembly device for marine engine piston rings according to claim 1, characterized in that, A load-bearing plate (18) is rotatably mounted on the block (5). A coil spring is provided between the load-bearing plate (18) and the block (5). After the piston ring is separated from the piston, it contacts the load-bearing plate (18) to prevent the piston ring from falling off.

5. A method for disassembling piston rings using an auxiliary disassembly device for marine engine piston rings as described in any one of claims 1-4, characterized in that, Includes the following steps: S1: Place the piston vertically and move the movable base (1) to one side of the piston so that the first slider (6) and the second slider (7) are facing the piston. S2: The drive assembly drives the toothed roller (2) to rotate, and the toothed roller (2) drives each of the first slider (6) and the second slider (7) to rotate, so that the first slider (6) and the second slider (7) surround the piston, and the first limiting head (9) on the first slider (6) and the second slider (7) enters the opening of the piston ring. S3: Rotate the toothed roller (2) in the opposite direction. The first slider (6) and the second slider (7) will widen the opening of the piston ring and drive the piston ring away from the piston.

Images