Special tool for assembling and disassembling piston ring of large marine diesel engine

Abstract

The utility model relates to the technical field of piston rings, and discloses a large marine diesel engine piston ring assembling and disassembling special tool which comprises a shell, an air cylinder is fixedly installed in the shell, the telescopic end of the air cylinder is fixedly connected with a locking sleeve, and the end, away from the air cylinder, of the locking sleeve is connected with a first connecting base through an installing base. A first connecting rod is mounted at the end, away from the mounting seat, of the first connecting seat and connected with a guide block, a second connecting seat is mounted at the top of the guide block, and a second connecting rod is mounted at the bottom of the guide block. According to the special tool for assembling and disassembling the piston ring of the large marine diesel engine, the telescopic end of the air cylinder is fixedly connected with the locking sleeve, the locking sleeve is fixed to the first connecting base through the nut, the air cylinder can be prevented from falling off due to vibration, the jackscrew on the outer side of the locking sleeve can prevent relative rotation between the air cylinder and the locking sleeve, and stability is improved; the first connecting rod and the second connecting rod can guide the guide block, and the stability of the structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of piston ring technology, specifically a special tool for assembling and disassembling piston rings for large marine diesel engines. Background Technology

[0002] With the increasing demands on ship power and the development of technology, the requirements for the precision and efficiency of diesel engine maintenance are becoming more stringent. Developing specialized piston ring installation and removal tools can significantly improve the efficiency of piston ring installation and removal and reduce the risk of damage caused by manual operation errors by workers.

[0003] Traditional assembly and disassembly tools can easily damage piston rings during use, potentially causing deformation or breakage, which can affect the normal operation of the diesel engine. Furthermore, traditional tools may not have been designed with safety precautions in mind, increasing the risk of injury to workers during operation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a special tool for assembling and disassembling piston rings for large marine diesel engines, thereby solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a special tool for installing and removing piston rings of large marine diesel engines, including a housing, a cylinder fixedly installed inside the housing, a locking sleeve fixedly connected to the telescopic end of the cylinder, a first connecting seat connected to the end of the locking sleeve away from the cylinder via a mounting seat, a first connecting rod installed at the end of the first connecting seat away from the mounting seat, a guide block connected to the first connecting rod, a second connecting seat installed at the top of the guide block, and a second connecting rod installed at the bottom of the guide block.

[0008] Preferably, a set screw is installed on the side of the locking sleeve near the cylinder, and the set screw passes through the locking sleeve and fits against the telescopic end of the cylinder.

[0009] Preferably, the locking sleeve has a groove on its surface, and the top of the mounting base is fixed to the first connecting base by a nut.

[0010] Preferably, a first spring is connected to the bottom of the mounting base, the first spring is fixedly installed inside the first connecting base, and a second spring is installed inside the two second connecting rods.

[0011] Preferably, the second connecting seat is connected to two guide blocks via a first sliding column, the two guide blocks are symmetrically distributed, and there are two of each of the first and second connecting rods, the two first connecting rods and the two second connecting rods are symmetrically distributed.

[0012] Preferably, the second connecting seat has a first groove at one end near the guide block, the first sliding column is slidably connected to the inside of the first groove, the second connecting seat has a second groove and a third groove on the side near the first connecting seat, the two first connecting rods are slidably connected to the inside of the second groove through the second sliding column, the end of the first connecting rod away from the second sliding column is rotatably connected to the rear side of the guide block through a rotating shaft, and the two second connecting rods are slidably connected to the inside of the third groove through the third sliding column.

[0013] Preferably, a number of baffles are installed on the front side of the guide block, and a hook is installed on the side of the guide block near the first sliding column. The baffles and the hook are both L-shaped.

[0014] Compared with the prior art, this utility model provides a special tool for installing and removing piston rings of large marine diesel engines, which has the following beneficial effects: The cylinder's telescopic end is fixedly connected to a locking sleeve, which is fixed to the first connecting seat by a nut, preventing the cylinder from falling off due to vibration. The set screw on the outside of the locking sleeve prevents relative rotation between the cylinder and the locking sleeve, improving stability. The first and second connecting rods provide guidance to the guide block, improving the stability of the structure. The combined use of the first sliding groove 14 and the first sliding column 15, the second sliding groove 18 and the second sliding column 17, and the third sliding groove 19 and the third sliding column 20 limits the movement range of each component, ensuring that the components do not exceed the predetermined trajectory under normal working conditions. A first spring is connected to the bottom of the mounting seat, and second springs are installed on the inner sides of the two second connecting rods. The first and second springs can absorb vibration, improving the stability of the structure during use. The L-shaped baffle and hook on the guide block prevent the piston rings from falling off due to accidents during disassembly and installation, improving the stability of piston ring installation and removal. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the cylinder structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the first connecting rod structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the second link structure of this utility model.

[0019] In the diagram: 1. Outer shell; 2. First connecting seat; 3. First connecting rod; 4. Guide block; 5. Baffle; 6. Hook; 7. Second connecting seat; 8. Mounting seat; 9. Nut; 10. Cylinder; 11. Set screw; 12. Locking sleeve; 13. First spring; 14. First slide groove; 15. First slide column; 16. Rotating shaft; 17. Second slide column; 18. Second slide groove; 19. Third slide groove; 20. Third slide column; 21. Second connecting rod; 22. Second spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-4 As shown, this utility model provides a technical solution: a special tool for installing and removing piston rings of large marine diesel engines, including a housing 1, a cylinder 10 fixedly installed inside the housing 1, a locking sleeve 12 fixedly connected to the telescopic end of the cylinder 10, a first connecting seat 2 connected to the end of the locking sleeve 12 away from the cylinder 10 through a mounting seat 8, a first connecting rod 3 installed at the end of the first connecting seat 2 away from the mounting seat 8, a guide block 4 connected to the first connecting rod 3, a second connecting seat 7 installed at the top of the guide block 4, and a second connecting rod 21 installed at the bottom of the guide block 4.

[0022] Furthermore, a set screw 11 is installed on the side of the locking sleeve 12 near the cylinder 10, and the set screw 11 passes through the locking sleeve 12 and fits against the telescopic end of the cylinder 10.

[0023] Specifically, the set screw 11 can prevent loosening caused by movement or vibration during the operation of the cylinder 10, and ensure that the locking sleeve 12 remains stable at the extension and retraction end of the cylinder 10.

[0024] Furthermore, the locking sleeve 12 has a groove on its surface, and the top of the mounting base 8 is fixed to the first connecting base 2 by a nut 9.

[0025] Specifically, the groove on the locking sleeve 12 can be used with the nut 9 to adjust the position of the mounting seat 8, and can adjust the extension distance of the mounting seat 8 through the cylinder 10 to prevent excessive clamping that could damage the piston rings.

[0026] Furthermore, a first spring 13 is connected to the bottom of the mounting base 8. The first spring 13 is fixedly installed inside the first connecting base 2, and a second spring 22 is installed inside the two second connecting rods 21.

[0027] Specifically, the first spring 13 and the second spring 22 provide cushioning and absorb vibration, which can improve the stability of the special tool when installing and removing piston rings.

[0028] Furthermore, the second connecting seat 7 is connected to two guide blocks 4 via the first sliding column 15. The two guide blocks 4 are symmetrically distributed. There are two first connecting rods 3 and two second connecting rods 21. The two first connecting rods 3 and the two second connecting rods 21 are symmetrically distributed.

[0029] Specifically, the symmetrical design improves balance during operation, reduces unilateral stress, and helps improve the durability and stability of the tool.

[0030] Furthermore, the second connecting seat 7 has a first sliding groove 14 at one end near the guide block 4, and the first sliding column 15 is slidably connected to the inside of the first sliding groove 14. The second connecting seat 7 has a second sliding groove 18 and a third sliding groove 19 at one side near the first connecting seat 2. The two first connecting rods 3 are slidably connected to the inside of the second sliding groove 18 through the second sliding column 17. The end of the first connecting rod 3 away from the second sliding column 17 is rotatably connected to the rear side of the guide block 4 through the rotating shaft 16. The two second connecting rods 21 are slidably connected to the inside of the third sliding groove 19 through the third sliding column 20.

[0031] Specifically, the combined use of the first slide groove 14 and the first slide column 15, the second slide groove 18 and the second slide column 17, and the third slide groove 19 and the third slide column 20 ensures the directionality of the movement of each component, enabling the special tool to achieve smooth and controllable movement, and improving its flexibility and adaptability.

[0032] Furthermore, several baffles 5 are installed on the front side of the guide block 4, and a hook 6 is installed on the side of the guide block 4 near the first sliding column 15. Both the baffles 5 and the hook 6 are L-shaped.

[0033] Specifically, the hook 6 can hook into the groove of the piston ring, expand it within a certain range and remove it using a special tool, and the baffle 5 can prevent the piston ring from falling off due to accidental slippage, limit its displacement and improve safety.

[0034] Working principle: First, a cylinder 10 is fixedly installed inside the outer casing 1. A locking sleeve 12 is fixedly connected to the telescopic end of the cylinder 10. The locking sleeve 12 is fixed to the first connecting seat 2 by a nut 9, which can prevent the cylinder 10 from falling off due to vibration. A first connecting rod 3 is installed at the end of the first connecting seat 2 away from the mounting seat 8. The first connecting rod 3 is connected to a guide block 4. A second connecting seat 7 is installed on the top of the guide block 4, and a second connecting rod 21 is installed on the bottom of the guide block 4. The first connecting rod 3 and the second connecting rod 21 can provide guidance for the guide block 4. Second, a first sliding groove 14, a second sliding groove 18, and a third sliding groove 19 are opened on the surface of the second connecting seat 7. A first sliding post 15 on the top of the guide block 4 is slidably connected to the inner side of the first sliding groove 14. The two first connecting rods 3 are connected through the second sliding post 17. The first connecting rod 3 is slidably connected to the inner side of the second slide groove 18. The end of the first connecting rod 3 away from the second slide column 17 is rotatably connected to the rear side of the guide block 4 through the rotating shaft 16. The two second connecting rods 21 are slidably connected to the inner side of the third slide groove 19 through the third slide column 20. This structure limits the range of movement and ensures that the component will not exceed the predetermined trajectory under normal working conditions. Finally, the bottom of the mounting base 8 is connected to the first spring 13, and the inner side of the two second connecting rods 21 is equipped with the second spring 22. The first spring 13 and the second spring 22 can absorb vibration and improve the stability of the device. Several baffles 5 are installed on the front side of the guide block 4, and a hook 6 is installed on the side of the guide block 4 near the first slide column 15. The baffles 5 and the hook 6 can prevent the piston rings from falling off due to accidents when disassembling and installing the piston rings.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special tool for installing and removing piston rings of large marine diesel engines, including a housing (1), characterized in that: A cylinder (10) is fixedly installed inside the outer shell (1). A locking sleeve (12) is fixedly connected to the telescopic end of the cylinder (10). The end of the locking sleeve (12) away from the cylinder (10) is connected to a first connecting seat (2) through a mounting seat (8). A first connecting rod (3) is installed at the end of the first connecting seat (2) away from the mounting seat (8). A guide block (4) is connected to the first connecting rod (3). A second connecting seat (7) is installed at the top of the guide block (4). A second connecting rod (21) is installed at the bottom of the guide block (4).

2. The special tool for installing and removing piston rings of large marine diesel engines according to claim 1, characterized in that: The locking sleeve (12) is fitted with a set screw (11) on the side near the cylinder (10). The set screw (11) passes through the locking sleeve (12) and fits against the telescopic end of the cylinder (10).

3. The special tool for installing and removing piston rings of large marine diesel engines according to claim 1, characterized in that: The locking sleeve (12) has a groove on its surface, and the top of the mounting base (8) is fixed to the first connecting base (2) by a nut (9).

4. The special tool for installing and removing piston rings of large marine diesel engines according to claim 1, characterized in that: The bottom of the mounting base (8) is connected to a first spring (13), the first spring (13) is fixedly installed on the inner side of the first connecting base (2), and the inner side of the two second connecting rods (21) is equipped with a second spring (22).

5. The special tool for installing and removing piston rings of large marine diesel engines according to claim 1, characterized in that: The second connecting seat (7) is connected to two guide blocks (4) via the first sliding column (15). The two guide blocks (4) are symmetrically distributed. There are two of each of the first connecting rod (3) and the second connecting rod (21). The two first connecting rods (3) and the two second connecting rods (21) are symmetrically distributed.

6. The special tool for installing and removing piston rings of large marine diesel engines according to claim 5, characterized in that: The second connecting seat (7) has a first groove (14) at one end near the guide block (4), and the first sliding column (15) is slidably connected to the inside of the first groove (14). The second connecting seat (7) has a second groove (18) and a third groove (19) at one side near the first connecting seat (2). The two first connecting rods (3) are slidably connected to the inside of the second groove (18) through the second sliding column (17). The end of the first connecting rod (3) away from the second sliding column (17) is rotatably connected to the rear side of the guide block (4) through the rotating shaft (16). The two second connecting rods (21) are slidably connected to the inside of the third groove (19) through the third sliding column (20).

7. The special tool for installing and removing piston rings of large marine diesel engines according to claim 1, characterized in that: Several baffles (5) are installed on the front side of the guide block (4), and a hook (6) is installed on the side of the guide block (4) near the first sliding column (15). The baffles (5) and the hook (6) are both L-shaped.

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