Marine main engine cylinder sleeve and water jacket dismounting tool

Abstract

The invention relates to the technical field of ship maintenance, and discloses a ship main engine cylinder sleeve and water jacket disassembling tool which comprises a main engine cylinder sleeve body, a water jacket body, cooling holes formed in the two sides of the water jacket body, two positioning barrels, a cross beam and two jacks. A conical block is fixedly connected to one end of the threaded cylinder, arc-shaped supporting plates are fixedly connected to the positions, located outside the positioning cylinder, of the four supporting rods, and spherical beads are fixedly connected to the ends, away from the arc-shaped supporting plates, of the supporting rods. The positioning barrel is inserted into the cooling hole of the water jacket body, the supporting plate and the boss are connected through the double-end lead screw, the jack is arranged between the cross beam and the main engine cylinder jacket body, the water jacket body is dismantled through force application of the jack, and compared with a traditional technology, the strength is improved while a threaded hole of the water jacket body is protected; and the dismounting efficiency of the cylinder sleeve and the water jacket is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ship maintenance, in particular to a ship main engine cylinder liner water jacket disassembly tool. Background Art

[0002] The ship's main engine cylinder liner is an important component of large ship diesel engines. Its main function is to provide a working surface with less friction for the piston to move in it, while dissipating the heat generated by combustion to the cooling system. When repairing the ship, it is necessary to remove the water jacket in the main engine cylinder liner and replace the sealing ring.

[0003] In the prior art, when using a tool for disassembling a cylinder liner water jacket, a bolt is usually screwed into an internal threaded hole on the water jacket, and force is applied to the bolt to disassemble the cylinder liner water jacket. In this process, the bolts used to withstand shear force are easily broken when the bolts are used for disassembly. In addition, the internal threaded hole on the water jacket is deformed, resulting in damage to the internal thread, making it unusable later. Therefore, a tool for disassembling the cylinder liner water jacket of a ship main engine is proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a ship main engine cylinder liner water jacket disassembly tool to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ship main engine cylinder liner water jacket disassembly tool, comprising a main engine cylinder liner body, a water jacket body, cooling holes opened on both sides of the water jacket body, two positioning cylinders, a crossbeam and two jacks, the two jacks are arranged between the crossbeam and the main engine cylinder liner body, the top outer surface of the positioning cylinder is fixedly connected with two reinforcing ribs, the top outer surfaces of the two reinforcing ribs are fixedly connected with bosses, two support plates are arranged inside the crossbeam, and a double-headed screw is arranged between the two support plates and the two bosses; An adjusting screw is rotatably penetrated through the outer surface of the positioning cylinder, and a plum blossom groove is provided at one end of the adjusting screw located outside the positioning cylinder. The outer surface of the adjusting screw is threadedly connected to a threaded cylinder, and one end of the threaded cylinder is fixedly connected to a conical block. Four support rods are movably inserted in a circular array on the outer surface of the positioning cylinder, and the four support rods are located outside the positioning cylinder and are fixedly connected to an arc support plate, and a spherical ball is fixedly connected to one end of the support rod away from the arc support plate.

[0006] As a further explanation of the present invention, a turntable is fixedly provided on the outer surface of the adjusting screw, a rectangular rod is movably inserted into the outer surface of the positioning cylinder away from the cooling hole, a limiting disk is fixedly provided on one side of the rectangular rod located inside the positioning cylinder, and a plurality of limiting teeth are provided on the outer surfaces of the limiting disk and the turntable, and the limiting teeth on the surface of the limiting disk and the surface of the turntable are meshed with each other.

[0007] As a further explanation of the present invention, a positioning sleeve is fixedly connected to the outer surface of the positioning cylinder away from the cooling hole, the rectangular rod is movably inserted in the interior of the positioning sleeve, a receiving groove is provided inside the rectangular rod, a first spring is fixedly connected to the interior of the receiving groove, a limiting block is fixedly connected to the top outer surface of the first spring, the limiting block has an inclined surface facing the side of the positioning cylinder, and a first limiting hole and a second limiting hole are provided on the outer surface of the positioning sleeve.

[0008] As a further explanation of the present invention, a forward and reverse screw rod is rotatably connected between the left and right inner walls of the beam, and the forward and reverse screw rod rotates through the right outer surface of the beam. A knob is fixedly connected to one side of the forward and reverse screw rod located outside the beam.

[0009] As a further illustration of the present invention, a second spring is fixedly connected between the spherical ball and the inner wall of the positioning tube.

[0010] As a further explanation of the present invention, the outer surface of the threaded cylinder is fixedly sleeved with a vertical plate, the top inner surface and the bottom inner surface of the positioning cylinder are fixedly connected to a U-shaped frame, and the vertical plate is movably sleeved on the outer surface of the U-shaped frame.

[0011] As a further explanation of the present invention, the outer surfaces of the boss and the support plate are both provided with through holes, the double-headed screw rod passes through the through holes, and the double-headed screw rod is located on the top and bottom outer surfaces of the boss and the support plate and is threadedly connected with nuts.

[0012] As a further illustration of the present invention, a third spring is fixedly connected between the inner wall of the positioning cylinder and the limiting plate.

[0013] As a further explanation of the present invention, the front and rear outer surfaces of the support plate are fixedly connected with connecting blocks, the two connecting blocks on the rear side are threadedly connected to the two ends of the positive and negative screw rods respectively, the inside of the cross beam is fixedly connected with a sliding rod, and the two connecting blocks on the front side are movably sleeved on the outer surface of the sliding rod.

[0014] As a further explanation of the present invention, through grooves are provided on the top outer surface and the bottom outer surface of the cross beam, and the double-headed screw rod is movably connected to the inside of the through grooves.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In a ship main engine cylinder liner water jacket disassembly tool provided by the present invention, a positioning cylinder is inserted into the cooling hole of the water jacket body, a double-headed screw is used to connect the support plate and the boss, and a jack is arranged between the crossbeam and the main engine cylinder liner body. The water jacket body is removed by applying force with the jack. Compared with the traditional technology, the threaded holes of the water jacket body are protected while the strength is increased, and the disassembly efficiency of the cylinder liner water jacket is improved.

[0016] 2. In a ship main engine cylinder jacket water jacket disassembly tool provided by the present invention, an adjusting screw cooperates with a threaded barrel to drive a conical block and a spherical ball to adjust the position of the arc support plate, so that the tool can be suitable for cooling holes of different apertures, and by setting a turntable, a limit plate and a limit tooth, in conjunction with a rectangular rod, a limit block, a first spring, a first limit hole and a second limit hole, the adjusting screw can be limited, so that the adjusting screw cannot rotate, thereby increasing stability.

[0017] 3. In a ship main engine cylinder jacket water jacket disassembly tool provided by the present invention, rotating the knob drives the forward and reverse screws to rotate, adjusts the position between the two support plates, and thus adjusts the position between the two positioning cylinders, so that the work can be applied to the disassembly of water jacket bodies of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the explosion structure of the crossbeam and the main engine cylinder sleeve body of the present invention; Figure 3 It is a schematic diagram of the positioning tube structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the positioning tube of the present invention; Figure 5 It is a schematic diagram of the crossbeam and related structures of the present invention; Figure 6 It is a cross-sectional schematic diagram of the crossbeam and related structures of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle; Figure 8 It is a schematic diagram of the internal structure of the positioning sleeve of the present invention.

[0019] In the figure: 1. main engine cylinder liner body; 2. water jacket body; 3. cooling hole; 4. positioning cylinder; 5. adjusting screw; 6. threaded cylinder; 7. conical block; 8. spherical bead; 9. arc support plate; 10. crossbeam; 11. jack; 12. support plate; 13. boss; 14. double-headed screw; 15. turntable; 16. limit plate; 17. limit tooth; 18. rectangular rod; 19. positioning sleeve; 20. accommodating groove; 21. first spring; 22. limit block; 23. first limit hole; 24. second limit hole; 25. plum blossom slot; 26. forward and reverse screw; 27. knob. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: Please refer to Figure 1-Figure 8 The present invention provides a technical solution: a ship main engine cylinder liner water jacket disassembly tool, comprising a main engine cylinder liner body 1, a water jacket body 2, cooling holes 3 opened on both sides of the water jacket body 2, two positioning cylinders 4, a crossbeam 10 and two jacks 11, the two jacks 11 are arranged between the crossbeam 10 and the main engine cylinder liner body 1, the top outer surface of the positioning cylinder 4 is fixedly connected with two reinforcing ribs, the top outer surfaces of the two reinforcing ribs are fixedly connected with bosses 13, two support plates 12 are arranged inside the crossbeam 10, and a double-headed screw 14 is arranged between the two support plates 12 and the two bosses 13. Specifically, The positioning cylinder 4 is inserted into the cooling hole 3, and the arc-shaped support plate 9 is abutted against the inner wall of the cooling hole 3, and the crossbeam 10 is placed above the main engine cylinder liner body 1, so that the two ends of the double-headed screw rod 14 are respectively connected to the boss 13 and the support plate 12, and the jack 11 is placed between the top of the main engine cylinder liner body 1 and the crossbeam 10. The water jacket body 2 is taken out by applying force through the jack 11, so that the cooling hole 3 of the water jacket body 2 is used in conjunction with the arc-shaped support plate 9 to remove the water jacket body 2. Compared with the traditional technology, the threaded holes of the water jacket body 2 are protected while the strength is increased, and the disassembly efficiency of the cylinder liner water jacket is improved.

[0022] An adjusting screw 5 is rotatably penetrated through the outer surface of the positioning cylinder 4, and a plum blossom groove 25 is provided at one end of the adjusting screw 5 located outside the positioning cylinder 4. The outer surface of the adjusting screw 5 is threadedly connected to a threaded cylinder 6, and one end of the threaded cylinder 6 is fixedly connected to a conical block 7. The outer surface of the positioning cylinder 4 is movably inserted with four support rods in a circular array, and the four support rods are located outside the positioning cylinder 4 and are fixedly connected to an arc support plate 9, and one end of the support rod is fixedly connected to the arc support plate 9. A spherical bead 8 is fixedly connected. Specifically, when disassembling water jacket bodies 2 of different models, the position of the arc support plate 9 can be adjusted according to cooling holes 3 of different diameters. At this time, the plum blossom groove 25 is aligned with the plum blossom screwdriver, and the plum blossom screwdriver is used to drive the adjusting screw 5 to rotate, thereby driving the threaded cylinder 6 to move, so that the threaded cylinder 6 squeezes the conical block 7 so that the diameter formed by the arc support plate 9 can be adapted to the cooling hole 3, thereby increasing the applicability of the tooling.

[0023] In this embodiment, through holes are provided on the outer surfaces of the boss 13 and the support plate 12, and the double-headed screw 14 passes through the through holes, and the double-headed screw 14 is located on the top and bottom outer surfaces of the boss 13 and the support plate 12 and is threadedly connected with nuts. Specifically, the double-headed screw 14 is inserted into the corresponding through holes of the boss 13 and the support plate 12, and the nuts are respectively screwed into the surfaces of the double-headed screw 14 located on the boss 13 and the support plate 12 to fix the double-headed screw 14 to the boss 13 and the support plate 12.

[0024] In this embodiment, through grooves are provided on the top outer surface and the bottom outer surface of the cross beam 10, and the double-headed screw rod 14 is movably connected to the inside of the through grooves. Specifically, the through grooves are provided to provide a channel for the movement of the double-headed screw rod 14.

[0025] In the specific implementation process, the positioning cylinder 4 is inserted into the cooling hole 3, and the arc support plate 9 is abutted against the inner wall of the cooling hole 3, the crossbeam 10 is placed above the main engine cylinder liner body 1, so that the two ends of the double-headed screw rod 14 are respectively connected to the boss 13 and the support plate 12, and the jack 11 is placed between the top of the main engine cylinder liner body 1 and the crossbeam 10. The water jacket body 2 is taken out by applying force through the jack 11, so that the cooling hole 3 of the water jacket body 2 is used in conjunction with the arc support plate 9 to remove the water jacket body 2. Compared with the traditional technology, The invention relates to a method for disassembling the water jacket body 2 and protecting the threaded holes of the water jacket body 2 while increasing the strength thereof. The invention also improves the disassembly efficiency of the cylinder water jacket. When disassembling water jacket bodies 2 of different models, the position of the arc support plate 9 can be adjusted according to the cooling holes 3 of different diameters. At this time, the plum blossom screwdriver is aligned with the plum blossom slot 25, and the plum blossom screwdriver is used to drive the adjusting screw 5 to rotate, thereby driving the threaded barrel 6 to move, so that the threaded barrel 6 squeezes the conical block 7 so that the diameter formed by the arc support plate 9 can be adapted to the cooling hole 3, thereby increasing the applicability of the tooling.

[0026] Embodiment 2: Please refer to Figure 1-Figure 8 The present invention provides a technical solution: a turntable 15 is fixedly sleeved on the outer surface of the adjusting screw 5, a rectangular rod 18 is movably inserted into the outer surface of the side of the positioning cylinder 4 away from the cooling hole 3, and a limiting disk 16 is fixedly sleeved on the side of the rectangular rod 18 located inside the positioning cylinder 4. A plurality of limiting teeth 17 are provided on the outer surfaces of the limiting disk 16 and the turntable 15. The limiting teeth 17 on the surface of the limiting disk 16 and the limiting teeth 17 on the surface of the turntable 15 are meshed with each other. Specifically, the limiting teeth 17 on the limiting disk 16 are meshed with the limiting teeth 17 on the turntable 15 to limit the turntable 15 and prevent the adjusting screw 5 from rotating.

[0027] In this embodiment, a positioning sleeve 19 is fixedly connected to the outer surface of the positioning cylinder 4 away from the cooling hole 3, and the rectangular rod 18 is movably inserted in the interior of the positioning sleeve 19. A receiving groove 20 is provided in the interior of the rectangular rod 18, and a first spring 21 is fixedly connected to the interior of the receiving groove 20. A limiting block 22 is fixedly connected to the top outer surface of the first spring 21, and a first limiting hole 23 and a second limiting hole 24 are provided on the outer surface of the positioning sleeve 19. Specifically, the rectangular rod 18 is pushed inward, and the positioning sleeve 19 squeezes the limiting block 22 to deform the first spring 21, so that the limiting block 22 is received in the interior of the receiving groove 20. When the limiting block 22 contacts the second limiting hole 24, the first spring 21 is reset, driving the limiting block 22 to be inserted into the second limiting hole 24, thereby limiting the rectangular rod 18 and the positioning sleeve 19. In this embodiment, the side of the limit block 22 facing the positioning cylinder 4 is an inclined surface. Specifically, the side of the limit block 22 facing the positioning cylinder 4 is an inclined surface so that when the movable rod is pushed, the limit block 22 can be driven to deform the first spring 21, thereby driving the limit block 22 to be stored in the interior of the accommodating groove 20.

[0028] In this embodiment, a second spring is fixedly connected between the spherical bead 8 and the inner wall of the positioning tube 4. Specifically, when the conical block 7 is separated from the surface of the spherical bead 8, the second spring drives the spherical bead 8 to reset the arc support plate 9.

[0029] In this embodiment, a vertical plate is fixedly sleeved on the outer surface of the threaded tube 6, the top inner surface and the bottom inner surface of the positioning tube 4 are fixedly connected to a U-shaped frame, and the vertical plate is movably sleeved on the outer surface of the U-shaped frame. Specifically, when the adjusting screw 5 drives the threaded tube 6 to move, the threaded tube 6 drives the vertical plate to move on the surface of the U-shaped frame, thereby preventing the threaded tube 6 from rotating with the rotation of the adjusting screw 5.

[0030] In this embodiment, a third spring is fixedly connected between the inner wall of the positioning cylinder 4 and the limit plate 16. Specifically, when the movable rod is pushed, the limit plate 16 is driven to reset the third spring. When the limit block 22 is pressed downward so that the limit block 22 is disengaged from the second limit hole 24, the third spring drives the limit plate 16 to reset.

[0031] In the specific implementation process, before the adjusting screw 5 needs to be rotated, the rectangular rod 18 is pushed inward, and the positioning sleeve 19 squeezes the limit block 22 to deform the first spring 21, so that the limit block 22 is received in the inside of the accommodating groove 20. When the limit block 22 contacts the second limit hole 24, the first spring 21 is reset, driving the limit block 22 to be inserted into the second limit hole 24, thereby limiting the position between the rectangular rod 18 and the positioning sleeve 19. When the rectangular rod 18 is pushed, the limit plate 16 is driven to move , so that the limiting teeth 17 on the limiting plate 16 are disengaged from the limiting teeth 17 on the rotating disk 15, thereby releasing the limit of the rotating disk 15, so that the adjusting screw 5 can rotate. After the adjustment is completed, the limiting block 22 is pressed downward so that the limiting block 22 is stored in the accommodating groove 20. At this time, the rectangular rod 18 is pulled outward so that the rectangular rod 18 drives the limiting plate 16 to move to the corresponding position of the rotating disk 15, and the limiting teeth 17 are meshed with each other, so that the adjusting screw 5 cannot rotate, thereby increasing stability.

[0032] Embodiment 3: Please refer to Figure 1-Figure 8 The present invention provides a technical solution: a forward and reverse screw rod 26 is rotatably connected between the left and right inner walls of the beam 10, the forward and reverse screw rod 26 rotates and penetrates the right outer surface of the beam 10, and a knob 27 is fixedly connected to one side of the forward and reverse screw rod 26 located outside the beam 10. Specifically, the forward and reverse screw rod 26 is driven to rotate by the knob 27 to adjust the positions of the two support plates 12, thereby adjusting the distance between the two positioning cylinders 4 on the left and right sides, so that this work can be applicable to the disassembly of water jacket bodies 2 of different sizes.

[0033] In this embodiment, the front and rear outer surfaces of the support plate 12 are fixedly connected with connecting blocks, the two rear connecting blocks are respectively threadedly connected to the two ends of the forward and reverse screw rods 26, the interior of the cross beam 10 is fixedly connected with a sliding rod, and the two front connecting blocks are movably sleeved on the outer surface of the sliding rod. Specifically, when the forward and reverse screw rods 26 rotate, the connecting blocks are driven to move, thereby moving the support plate 12, and the front connecting blocks slide on the outer surface of the sliding rod to prevent the support plate 12 from rotating with the rotation of the sliding rod.

[0034] In the specific implementation process, by rotating the knob 27, the knob 27 drives the forward and reverse screw rods 26 to rotate, and the forward and reverse screw rods 26 respectively drive the two support plates 12 to move, thereby adjusting the distance between the two positioning cylinders 4 on the left and right sides, so that this work can be suitable for the disassembly of water jacket bodies 2 of different sizes.

[0035] Working principle: When the present invention is used, the positioning cylinder 4 is inserted into the cooling hole 3, and the arc support plate 9 is abutted against the inner wall of the cooling hole 3, the crossbeam 10 is placed above the main engine cylinder liner body 1, so that the two ends of the double-headed screw rod 14 are respectively connected to the boss 13 and the support plate 12, and the jack 11 is placed between the top of the main engine cylinder liner body 1 and the crossbeam 10. The jack 11 is used to apply force to remove the water jacket body 2, so that the cooling hole 3 of the water jacket body 2 is used in conjunction with the arc support plate 9 to remove the water jacket body 2. Compared with the conventional The traditional technology protects the threaded holes of the water jacket body 2 while increasing the strength and improving the disassembly efficiency of the cylinder liner water jacket. When disassembling water jacket bodies 2 of different models, the position of the arc support plate 9 can be adjusted according to the cooling holes 3 of different diameters. At this time, the plum blossom screwdriver is aligned with the plum blossom slot 25, and the plum blossom screwdriver is used to drive the adjusting screw 5 to rotate, thereby driving the threaded barrel 6 to move, so that the threaded barrel 6 squeezes the conical block 7 so that the diameter formed by the arc support plate 9 can be adapted to the cooling hole 3, thereby increasing the applicability of the tooling.

[0036] When the adjusting screw 5 needs to be rotated, the rectangular rod 18 is pushed inwardly, and the positioning sleeve 19 squeezes the limit block 22 to deform the first spring 21 so that the limit block 22 is received in the receiving groove 20. When the limit block 22 contacts the second limit hole 24, the first spring 21 is reset, driving the limit block 22 to be inserted into the second limit hole 24, thereby limiting the rectangular rod 18 and the positioning sleeve 19. When the rectangular rod 18 is pushed, the limit plate 16 is driven to move, so that the limit teeth 17 on the limit plate 16 are disengaged from the limit teeth 17 on the rotating disk 15, thereby releasing the limit of the rotating disk 15, so that the adjusting screw 5 can be rotated. After the adjustment is completed, the limit block 22 is pressed downward so that the limit block 22 is received in the receiving groove 20. At this time, the rectangular rod 18 is pulled outward so that the rectangular rod 18 drives the limit plate 16 to move to the corresponding position with the rotating disk 15, and the limit teeth 17 are meshed with each other, so that the adjusting screw 5 cannot rotate, thereby increasing stability.

[0037] By rotating the knob 27, the knob 27 drives the forward and reverse screw rods 26 to rotate, and the forward and reverse screw rods 26 respectively drive the two support plates 12 to move, thereby adjusting the distance between the two positioning cylinders 4 on the left and right sides, so that this work can be applicable to the disassembly of water jacket bodies 2 of different sizes.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship main engine cylinder liner water jacket disassembly tool, comprising a main engine cylinder liner body (1), a water jacket body (2), cooling holes (3) provided on both sides of the water jacket body (2), two positioning cylinders (4), a crossbeam (10) and two jacks (11), characterized in that: The two jacks (11) are arranged between the crossbeam (10) and the main engine cylinder sleeve body (1); the top outer surface of the positioning cylinder (4) is fixedly connected to two reinforcing ribs; the top outer surfaces of the two reinforcing ribs are fixedly connected to bosses (13); two support plates (12) are arranged inside the crossbeam (10); and a double-headed screw (14) is arranged between the two support plates (12) and the two bosses (13); An adjusting screw (5) is rotatably inserted through the outer surface of the positioning cylinder (4); one end of the adjusting screw (5) located outside the positioning cylinder (4) is provided with a hexagram groove (25); the outer surface of the adjusting screw (5) is threadedly connected to a threaded cylinder (6); one end of the threaded cylinder (6) is fixedly connected to a conical block (7); four supporting rods are movably inserted in a circular array on the outer surface of the positioning cylinder (4); the four supporting rods are located outside the positioning cylinder (4) and are fixedly connected to an arc support plate (9); one end of the supporting rod away from the arc support plate (9) is fixedly connected to a spherical bead (8).

2. A ship main engine cylinder jacket water jacket disassembly tool according to claim 1, characterized in that: A rotating disk (15) is fixedly sleeved on the outer surface of the adjusting screw (5); a rectangular rod (18) is movably inserted into the outer surface of a side of the positioning cylinder (4) away from the cooling hole (3); a limiting disk (16) is fixedly sleeved on the side of the rectangular rod (18) located inside the positioning cylinder (4); a plurality of limiting teeth (17) are provided on the outer surfaces of the limiting disk (16) and the rotating disk (15); the limiting teeth (17) on the surface of the limiting disk (16) and the limiting teeth (17) on the surface of the rotating disk (15) mesh with each other.

3. A ship main engine cylinder jacket water jacket disassembly tool according to claim 2, characterized in that: A positioning sleeve (19) is fixedly connected to the outer surface of the positioning cylinder (4) on the side away from the cooling hole (3); the rectangular rod (18) is movably inserted into the interior of the positioning sleeve (19); a receiving groove (20) is provided inside the rectangular rod (18); a first spring (21) is fixedly connected to the interior of the receiving groove (20); a limiting block (22) is fixedly connected to the top outer surface of the first spring (21); a side of the limiting block (22) facing the positioning cylinder (4) is an inclined surface; and a first limiting hole (23) and a second limiting hole (24) are provided on the outer surface of the positioning sleeve (19).

4. The ship main engine cylinder jacket water jacket disassembly tool according to claim 1, characterized in that: A forward and reverse screw rod (26) is rotatably connected between the left and right inner walls of the cross beam (10), the forward and reverse screw rod (26) rotatably penetrates the right outer surface of the cross beam (10), and a knob (27) is fixedly connected to one side of the forward and reverse screw rod (26) located outside the cross beam (10).

5. The ship main engine cylinder jacket water jacket disassembly tool according to claim 1, characterized in that: A second spring is fixedly connected between the spherical bead (8) and the inner wall of the positioning cylinder (4).

6. The ship main engine cylinder jacket water jacket disassembly tool according to claim 1, characterized in that: The outer surface of the threaded cylinder (6) is fixedly sleeved with a vertical plate, the top inner surface and the bottom inner surface of the positioning cylinder (4) are both fixedly connected to a U-shaped frame, and the vertical plate is movably sleeved on the outer surface of the U-shaped frame.

7. The ship main engine cylinder jacket water jacket disassembly tool according to claim 1, characterized in that: The outer surfaces of the boss (13) and the support plate (12) are both provided with through holes, the double-headed screw rod (14) passes through the through holes, and the double-headed screw rod (14) is located on the top and bottom outer surfaces of the boss (13) and the support plate (12) and is threadedly connected with nuts.

8. The ship main engine cylinder jacket water jacket disassembly tool according to claim 2, characterized in that: A third spring is fixedly connected between the inner wall of the positioning cylinder (4) and the limiting plate (16).

9. The ship main engine cylinder jacket water jacket disassembly tool according to claim 4, characterized in that: The front and rear outer surfaces of the support plate (12) are both fixedly connected with connection blocks, the two connection blocks on the rear side are respectively threadedly connected to the two ends of the forward and reverse screw rods (26), the interior of the crossbeam (10) is fixedly connected with a sliding rod, and the two connection blocks on the front side are movably sleeved on the outer surface of the sliding rod.

10. The ship main engine cylinder jacket water jacket disassembly tool according to claim 1, characterized in that: The top outer surface and the bottom outer surface of the cross beam (10) are both provided with through grooves, and the double-headed screw rod (14) is movably connected to the inside of the through grooves.

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