Sealing structure of marine ship tail shaft

Abstract

The utility model discloses a sealing structure of a tail shaft of a maritime work ship, which relates to the technical field of tail shafts of maritime work ships, is suitable for sealing the tail shaft of the maritime work ship, and comprises a connecting valve I, the sealing unit is arranged on one side of the first connecting valve; the lubricating unit is arranged on the other side of the sealing unit and is used for lubricating; the sealing column is arranged on the other side of the lubricating unit and used for connection, the sealing unit comprises a connecting assembly and a maintenance assembly arranged on the outer surface of the connecting assembly, and the lubricating unit comprises a lubricating assembly arranged in the sealing unit and an oil injection assembly arranged on the outer surface of the lubricating assembly. Internal elements of the sealing structure can be conveniently replaced through mutual cooperation of the connecting pipe, the first fixing ring, the connecting ring and the maintenance assembly, the interior of the ship stern shaft can be conveniently lubricated through mutual cooperation of the lubricating oil pipe, the oil injection pipe and the sealing plug, and then the practicability of the sealing structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a stern shaft of an offshore ship, in particular to a sealing structure of a stern shaft of an offshore ship. Background Art

[0002] When the stern shaft of an offshore vessel is in use, there is no all-round protective structure, which makes it impossible to seal it and provide impact protection at the same time, which limits its use. At the same time, it lacks a buffer positioning structure when hit, which further makes it prone to loosening, resulting in insufficient overall sealing and greatly reducing its overall service life.

[0003] In the prior art, a sealing structure for the stern shaft of an offshore vessel is proposed in a patent document with the announcement number CN216789225U, which relates to the field of ship technology. The sealing structure is intended to solve the technical problem that the sealing structure cannot play an anti-impact protection role while sealing it, and lacks a buffer positioning structure when it is hit. The sealing structure includes a stern shaft body, a propeller module installed on the stern shaft body, and an installation module connected to the stern shaft body and used for fastening and installation; a sealing connection cover module for connection is arranged inside the propeller module, an outer protection module for anti-impact protection is arranged outside the stern shaft body, and a first sealing sleeve for sealing and connecting the front end is arranged inside the outer protection module. The sealing structure can play an anti-impact protection role through the outer protection module, and can play a sealing effect on both ends through the first sealing sleeve and the second sealing sleeve, and can play a buffering role by using elastic elements.

[0004] The existing technology has the following problems:

[0005] The existing sealing structure is not convenient for lubrication of the interior during use, and it is also not convenient for replacement of the internal components during use, thereby reducing the practicality of the sealing structure. Utility Model Content

[0006] The utility model aims to provide a sealing structure for a stern shaft of an offshore vessel to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A sealing structure for a stern shaft of an offshore vessel, suitable for sealing the stern shaft of an offshore vessel, comprises a connecting valve; a sealing unit arranged on one side of the connecting valve; a lubricating unit arranged on the other side of the sealing unit for lubrication; and a sealing column arranged on the other side of the lubricating unit for connection, wherein the sealing unit comprises a connecting component and a maintenance component arranged on the outer surface of the connecting component, and the lubricating unit comprises a lubricating component arranged inside the sealing unit and an oil injection component arranged on the outer surface of the lubricating component.

[0009] A further improvement of the technical solution of the utility model is that the connecting assembly includes a connecting pipe, one side of the connecting pipe is fixedly connected to the outer surface of the connecting valve one, the other side of the connecting pipe is fixedly connected to a fixing ring one, and the other side of the fixing ring one is fixedly connected to a connecting ring.

[0010] By adopting the above technical solution, the components inside the stern shaft of the ship can be easily replaced by using the cooperation between the connecting pipe, the fixing ring 1 and the connecting ring.

[0011] A further improvement of the technical solution of the utility model is that: the maintenance assembly includes a maintenance box, the bottom surface of the maintenance box is fixedly connected to the outer surface of the fixing ring, one side of the maintenance box is rotatably connected to a sealing cover plate, the outer surface of the sealing cover plate is detachably connected to an installation sealing sleeve, and the outer surface of the installation sealing sleeve is threadedly connected to a fixing bolt.

[0012] A further improvement of the technical solution of the utility model is that: the outer surface of the maintenance box is fixedly connected to a limiting slide rod, the outer surface of the limiting slide rod is slidably connected to a buckle that is slidably connected to the inner wall of the installation sealing sleeve, the inner wall of the buckle is movably connected to one end of the fixing bolt, the outer surface of the buckle is fixedly connected to a limiting spring, and the other end of the limiting spring is fixedly connected to the outer surface of the maintenance box.

[0013] By adopting the above technical solution, the sealing cover plate can be conveniently sealed and fixed by the cooperation of the maintenance box, the sealing cover plate, the installation sealing sleeve, the fixing bolts, the buckle, the limiting slide rod and the limiting spring.

[0014] A further improvement of the technical solution of the utility model is that the lubrication assembly includes a lubricating oil pipe, a thread group is provided on one end surface of the lubricating oil pipe, one end of the lubricating oil pipe is threadedly connected to the inner wall of the connecting ring through the thread group, and a lubricating oil groove is provided on the inner wall of the lubricating oil pipe.

[0015] A further improvement of the technical solution of the utility model is that the lubrication assembly includes an oil filling pipe, one end of which extends to the interior of the lubricating oil tank, and a sealing plug is detachably connected to the top of the oil filling pipe.

[0016] By adopting the above technical solution, the interior of the stern shaft of the ship can be lubricated conveniently by using the cooperation of the lubricating oil pipe, the oil filling pipe and the sealing plug.

[0017] A further improvement of the technical solution of the utility model is that: the sealing column includes a sealing ring, one side of the sealing ring is fixedly connected to the outer surface of the lubricating oil pipe, and the other end of the sealing ring is fixedly connected to a connecting valve 2.

[0018] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0019] The utility model provides a sealing structure for a stern shaft of an offshore vessel. The internal components of the sealing structure can be easily replaced by cooperating with each other through a connecting pipe, a fixing ring, a connecting ring and a maintenance assembly, thereby increasing the functionality of the sealing structure.

[0020] The utility model provides a sealing structure for a stern shaft of an offshore ship. The lubricating oil pipe, an oil injection pipe and a sealing plug cooperate with each other to facilitate lubrication of the interior of the stern shaft, thereby increasing the practicability of the sealing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the maintenance component of the utility model;

[0024] Figure 4 For the utility model Figure 3 A magnified schematic diagram of point A;

[0025] Figure 5 This is a schematic diagram of the structure of the lubrication unit of the utility model.

[0026] In the figure: 1. Connecting valve 1; 2. Sealing unit; 21. Connecting pipe; 22. Fixing ring 1; 23. Connecting ring; 24. Maintenance assembly; 241. Maintenance box; 242. Sealing cover plate; 243. Installing sealing sleeve; 244. Fixing bolt; 245. Buckle; 246. Limiting slide rod; 247. Limiting spring; 3. Lubricating unit; 31. Lubricating oil pipe; 311. Thread group; 312. Lubricating oil groove; 32. Oil filling pipe; 33. Sealing plug; 4. Sealing column; 41. Sealing ring; 42. Connecting valve 2. DETAILED DESCRIPTION

[0027] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 The utility model provides a technical solution: a sealing structure for a stern shaft of a marine engineering vessel, comprising a connecting valve 1; a sealing unit 2 arranged on one side of the connecting valve 1; a lubricating unit 3 arranged on the other side of the sealing unit 2 for lubrication; and a sealing column 4 arranged on the other side of the lubricating unit 3 for connection, the sealing unit 2 comprising a connecting component and a maintenance component 24 arranged on the outer surface of the connecting component, the lubricating unit 3 comprising a lubricating component arranged inside the sealing unit 2 and an oiling component arranged on the outer surface of the lubricating component.

[0029] The connecting assembly includes a connecting pipe 21, one side of the connecting pipe 21 is fixedly connected to the outer surface of the connecting valve 1, the other side of the connecting pipe 21 is fixedly connected to a fixing ring 22, and the other side of the fixing ring 22 is fixedly connected to a connecting ring 23.

[0030] The maintenance assembly 24 includes a maintenance box 241, the bottom surface of which is fixedly connected to the outer surface of the fixing ring 22, and one side of the maintenance box 241 is rotatably connected to a sealing cover plate 242, the outer surface of the sealing cover plate 242 is detachably connected to an installation sealing sleeve 243, and the outer surface of the installation sealing sleeve 243 is threadedly connected to a fixing bolt 244.

[0031] The outer surface of the maintenance box 241 is fixedly connected to a limiting slide rod 246, and the outer surface of the limiting slide rod 246 is slidably connected to a buckle 245 that is slidably connected to the inner wall of the installation sealing sleeve 243. The inner wall of the buckle 245 is movably connected to one end of the fixing bolt 244, and the outer surface of the buckle 245 is fixedly connected to a limiting spring 247, and the other end of the limiting spring 247 is fixedly connected to the outer surface of the maintenance box 241.

[0032] When using the sealing structure, if it is necessary to replace the internal components of the stern shaft, by rotating the fixing bolt 244, the buckle 245 can slide freely inside the installation sealing sleeve 243, thereby facilitating the opening of the sealing cover plate 242, and then facilitating the replacement of the components in the stern shaft. After the replacement is completed, the sealing cover plate 242 can be sealed again using the buckle 245 and the installation sealing sleeve 243.

[0033] The lubrication assembly includes a lubrication oil pipe 31 , one end surface of which is provided with a thread group 311 , one end of the lubrication oil pipe 31 is threadedly connected to the inner wall of the connecting ring 23 through the thread group 311 , and the inner wall of the lubrication oil pipe 31 is provided with a lubrication oil groove 312 .

[0034] The lubrication assembly includes an oil filling pipe 32 , one end of which extends to the interior of the lubricating oil groove 312 , and a sealing plug 33 is detachably connected to the top of the oil filling pipe 32 .

[0035] The sealing column 4 includes a sealing ring 41 , one side of the sealing ring 41 is fixedly connected to the outer surface of the lubricating oil pipe 31 , and the other end of the sealing ring 41 is fixedly connected to a connecting valve 2 42 .

[0036] When the stern shaft sealing structure is used and lubricating oil needs to be added to the stern shaft component, the sealing plug 33 is opened and the oil filling pipe 32 is used in conjunction with the lubricating oil groove 312 to lubricate the interior of the stern shaft, thereby facilitating lubrication of the stern shaft.

[0037] The following is a detailed description of the working principle of the sealing structure of the stern shaft of the offshore vessel.

[0038] like Figure 1-5 As shown, when the sealing structure is used, if it is necessary to replace the internal components of the stern shaft, by rotating the fixing bolt 244, the buckle 245 can slide freely inside the mounting sealing sleeve 243, so as to facilitate the opening of the sealing cover plate 242, and then facilitate the replacement of the components in the stern shaft. After the replacement is completed, the sealing cover plate 242 can be sealed again using the buckle 245 and the mounting sealing sleeve 243. When the stern shaft sealing structure is used, when it is necessary to add lubricating oil to the stern shaft components, the sealing plug 33 is opened, and the oil filling pipe 32 is used to cooperate with the lubricating oil groove 312 to lubricate the inside of the stern shaft, so as to facilitate the lubrication of the stern shaft.

[0039] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A sealing structure for a stern shaft of an offshore vessel, suitable for sealing a stern shaft of an offshore vessel, comprising a connecting valve 1 (1); A sealing unit (2) disposed on one side of the connecting valve (1); A lubrication unit (3) provided on the other side of the sealing unit (2) for lubrication; and a sealing column (4) arranged on the other side of the lubrication unit (3) for connection, characterized in that: The sealing unit (2) comprises a connecting component and a maintenance component (24) arranged on the outer surface of the connecting component, and the lubricating unit (3) comprises a lubricating component arranged inside the sealing unit (2) and an oil injection component arranged on the outer surface of the lubricating component.

2. The sealing structure of the stern shaft of an offshore vessel according to claim 1, characterized in that: The connection assembly comprises a connection pipe (21), one side of the connection pipe (21) being fixedly connected to the outer surface of the connection valve 1 (1), the other side of the connection pipe (21) being fixedly connected to a fixing ring 1 (22), and the other side of the fixing ring 1 (22) being fixedly connected to a connection ring (23).

3. The sealing structure of the stern shaft of an offshore vessel according to claim 1, characterized in that: The maintenance assembly (24) comprises a maintenance box (241), the bottom surface of the maintenance box (241) is fixedly connected to the outer surface of the fixing ring (22), one side of the maintenance box (241) is rotatably connected to a sealing cover plate (242), the outer surface of the sealing cover plate (242) is detachably connected to a mounting sealing sleeve (243), and the outer surface of the mounting sealing sleeve (243) is threadedly connected to a fixing bolt (244).

4. The sealing structure of the stern shaft of an offshore vessel according to claim 3, characterized in that: The outer surface of the maintenance box (241) is fixedly connected to a limit slide bar (246), the outer surface of the limit slide bar (246) is slidably connected to a buckle (245) slidably connected to the inner wall of the installation sealing sleeve (243), the inner wall of the buckle (245) is movably engaged with one end of a fixing bolt (244), the outer surface of the buckle (245) is fixedly connected to a limit spring (247), and the other end of the limit spring (247) is fixedly connected to the outer surface of the maintenance box (241).

5. The sealing structure of the stern shaft of an offshore vessel according to claim 1, characterized in that: The lubrication assembly comprises a lubrication oil pipe (31), one end surface of the lubrication oil pipe (31) is provided with a thread group (311), one end of the lubrication oil pipe (31) is threadedly connected to the inner wall of the connection ring (23) via the thread group (311), and the inner wall of the lubrication oil pipe (31) is provided with a lubrication oil groove (312).

6. The sealing structure of the stern shaft of an offshore vessel according to claim 5, characterized in that: The lubrication assembly comprises an oil filling pipe (32), one end of the oil filling pipe (32) extends into the interior of the lubricating oil groove (312), and a sealing plug (33) is detachably connected to the top of the oil filling pipe (32).

7. The sealing structure of the stern shaft of an offshore vessel according to claim 1, characterized in that: The sealing column (4) comprises a sealing ring (41), one side of the sealing ring (41) is fixedly connected to the outer surface of the lubricating oil pipe (31), and the other end of the sealing ring (41) is fixedly connected to a second connecting valve (42).

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