Precise sealing copper sleeve for ship tail shaft

Abstract

The utility model provides a precise sealing copper bush for a ship stern shaft, which comprises a body, an oil storage cavity is arranged in the body, lubricating oil is filled in the oil storage cavity, a plurality of oil outlet holes are arranged on the inner wall of the body, the oil outlet holes are uniformly arranged at equal intervals, the inner wall of the whole body is filled with the oil outlet holes, and the oil outlet holes are communicated with the oil storage cavity. The side edge of the body is provided with an oil injection channel, the oil injection channel is communicated with the oil storage cavity, the oil storage cavity is formed in the body, the oil injection plug is opened to inject lubricating oil into the body, the oil injection plug is installed back into the counter bore after injection, and in the using process, the lubricating oil flows out of the oil storage cavity and finally flows out of the oil outlet to lubricate the device. Hard contact between the copper sleeve and the device is prevented, abrasion of the copper sleeve is greatly reduced, and the service life of the copper sleeve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of copper sleeves, in particular to a precision sealing copper sleeve for a ship stern shaft. Background Art

[0002] A copper sleeve is a cylindrical part, usually made of copper alloy, used to reduce friction during mechanical movement and play a role in lubrication and protection. In heavy machinery and equipment such as electric shovels, copper sleeves can be used for bushings, bearings or other parts that require reduction of wear and friction. Using copper sleeves in electric shovels can improve the operating efficiency and reliability of the equipment, reduce maintenance costs. At the same time, copper sleeves are also easy to install and replace in machinery, which helps to keep the machinery running normally and extend its service life.

[0003] The existing Chinese patent document CN202222127072.5 discloses a new type of graphite copper sleeve, including a first copper sleeve and a second copper sleeve. The first copper sleeve and the second copper sleeve are connected. One end of the first copper sleeve is fixedly welded with a first connecting piece, and one end of the second copper sleeve close to the first copper sleeve is fixedly welded with a second connecting piece. The first connecting piece and the second connecting piece are connected through an adapter; reinforcing ribs and reinforcing rings are arranged in both the first copper sleeve and the second copper sleeve. A plurality of the reinforcing ribs are arranged relatively parallel, the reinforcing ring is of an annular structure, the reinforcing ribs are fixedly connected with the reinforcing ring, the first copper sleeve and the second copper sleeve are integrally formed, the first copper sleeve and the second copper sleeve are both of a cylindrical hollow structure, and through holes are arranged on both the first connecting piece and the second connecting piece. Through the design of the reinforcing ribs and the reinforcing rings, the strength of the first copper sleeve and the second copper sleeve can be improved, thereby extending the service life of the first copper sleeve and the second copper sleeve.

[0004] However, there are certain defects in the use of the above patent. This copper sleeve lacks lubrication and will be severely worn after long-term use, greatly reducing its service life.

[0005] Therefore, a precision sealing copper sleeve for a ship stern shaft is proposed here to solve the above problems. Content of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a precision sealing copper sleeve for a ship stern shaft.

[0007] The utility model is realized by adopting the following technical solutions:

[0008] A precision sealing copper sleeve for a ship stern shaft includes a body. An oil storage cavity is arranged inside the body, the oil storage cavity is filled with lubricating oil, a plurality of oil outlet holes are arranged on the inner wall of the body, the oil outlet holes are evenly and equidistantly arranged and cover the entire inner wall of the body, and the oil outlet holes are communicated with the oil storage cavity;

[0009] An oil injection channel is provided on the side of the body, and the oil injection channel is communicated with the oil storage cavity.

[0010] Through the above technical solution, the problem of severe wear inside the copper sleeve is solved. The lubricating oil is stored in the oil storage chamber and eventually flows out from the oil outlet to lubricate the device, which greatly reduces the degree of wear of the device and increases the service life of the device.

[0011] A plurality of mounting holes are arranged on the outer peripheral wall of the body, and the mounting holes are evenly and equidistantly distributed over the entire outer surface of the body. Graphite columns are arranged in the mounting holes, and the graphite columns are interference-fitted with the mounting holes.

[0012] Through the above technical solution, the wear on the surface of the copper sleeve is effectively reduced, and the contact between the graphite column and other devices reduces the wear on the outer surface of the copper sleeve, thereby extending the service life of the copper sleeve.

[0013] The outer peripheral wall of the body is provided with a sealing groove, and two sealing grooves are provided, symmetrically arranged at the two ends of the body, and a sealing ring is arranged inside the sealing groove;

[0014] Through the above technical solution, the sealing effect of the copper sleeve is improved.

[0015] The cross section of the sealing groove is trapezoidal.

[0016] Through the above technical solution, the sealing ring is confined in the sealing groove, which further improves the sealing performance of the copper sleeve.

[0017] A countersunk hole is arranged at one end of the oil filling passage away from the oil storage cavity, a thread is arranged on the outer peripheral wall of the countersunk hole, and an oil filling plug is arranged in the countersunk hole.

[0018] The oil filling plug comprises a threaded column, a column head and a hexagonal hole. The column head is arranged at the top end of the threaded column and is connected therewith as a whole. The hexagonal hole is arranged on the upper surface of the column head.

[0019] The above technical solution makes it easy to add lubricating oil, allows repeated addition, is easy to install and maintain, and ensures a stable lubrication effect.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. An oil storage chamber is set inside the main body, and the oil filling plug is opened to fill the lubricating oil inside. After filling, the oil filling plug is installed back into the countersunk hole. During use, the lubricating oil flows out of the oil storage chamber and finally flows out through the oil outlet hole to lubricate the device, preventing the copper sleeve from hard contact with the device, greatly reducing the wear of the copper sleeve and extending the service life of the copper sleeve;

[0022] 2. By setting a sealing groove and a sealing ring, with the cross-section of the sealing groove being trapezoidal, after installing the sealing ring into the sealing groove, the displacement of the sealing ring is restricted, greatly improving the sealing effect of the copper bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the whole of the present utility model;

[0024] Figure 2 is an exploded three-dimensional structural schematic diagram of the whole of the present utility model;

[0025] Figure 3 is a front structural schematic diagram of the present utility model;

[0026] Figure 4 is a sectional structural schematic diagram of the present utility model;

[0027] Figure 5 is the present utility model Figure 4 a magnified schematic diagram of the structure at A in;

[0028] Figure 6 is a structural schematic diagram of the oil filling plug of the present utility model;

[0029] In the figure: 1. Body; 11. Oil storage cavity; 12. Countersunk hole; 13. Oil injection channel; 2. Oil filling plug; 21. Threaded post; 22. Hexagonal hole; 23. Plug head; 3. Sealing groove; 4. Sealing ring; 5. Oil outlet hole; 6. Graphite post. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, in combination with the drawings and specific embodiments, the present utility model will be further described. It should be noted that on the premise of no conflict, any combination can be formed between the following described embodiments or technical features to form new embodiments.

[0031] The present utility model will be further described below with reference to the drawings.

[0032] As Figures 1 to 3 shown, a precision sealing copper bushing for a ship's stern shaft includes a body 1. An oil storage cavity 11 is provided inside the body 1. The oil storage cavity 11 is filled with lubricating oil. A plurality of oil outlet holes 5 are provided on the inner wall of the body 1. The oil outlet holes 5 are evenly and equidistantly arranged and cover the entire inner wall of the body 1. The oil outlet holes 5 are communicated with the oil storage cavity 11;

[0033] An oil injection channel 13 is provided on the side of the body 1. The oil injection channel 13 is communicated with the oil storage cavity 11. Lubricating oil is injected into the oil storage cavity 11 through the oil injection channel 13. During use, it finally flows out from the oil outlet holes 5 to lubricate the device, greatly reducing the wear degree of the device and improving the service life of the device.

[0034] A plurality of mounting holes are provided on the outer peripheral wall of the body 1. The mounting holes are evenly and equidistantly distributed over the entire outer surface of the body 1. A graphite column 6 is provided in the mounting hole. The graphite column 6 is in interference fit with the mounting hole. The graphite column 6 has a lubricating effect, effectively reducing the wear on the surface of the copper sleeve. Through the contact between the graphite column 6 and the rest of the device, the wear on the outer surface of the copper sleeve is reduced, and the service life of the copper sleeve is extended. When the graphite column 6 is worn, it can be directly replaced. Since it is provided on the surface of the copper sleeve, the installation and disassembly are relatively convenient, greatly improving the work efficiency.

[0035] Sealing grooves 3 are provided on the outer peripheral wall of the body 1. There are two sealing grooves 3, which are symmetrically arranged at both ends of the body 1. A sealing ring 4 is provided inside the sealing groove 3. The sealing ring 4 is made of wear-resistant rubber and two are provided, improving the sealing effect of the copper sleeve.

[0036] As Figure 5 shown, the cross-section of the sealing groove 3 is trapezoidal, with the upper diameter of the sealing groove 3 being smaller and the lower diameter being larger. After the sealing ring 4 is installed in the sealing groove 3, the problem of the sealing ring 4 shifting is effectively avoided, and the sealing ring 4 is restricted in the sealing groove 3, further improving the sealing performance of the copper sleeve.

[0037] As Figure 4 shown, a counterbore 12 is provided at one end of the oil injection channel 13 away from the oil storage cavity 11. Threads are provided on the outer peripheral wall of the counterbore 12. An oil injection plug 2 is provided in the counterbore 12.

[0038] The oil injection plug 2 includes a threaded column 21, a plug head 23 and a hexagonal hole 22. The plug head 23 is provided at the top of the threaded column 21 and is integrally connected thereto. The hexagonal hole 22 is provided on the upper surface of the plug head 23. The oil injection plug 2 is provided in the counterbore 12 and can be disassembled and installed at will, which greatly facilitates the filling of lubricating oil. The lubricating oil can be added repeatedly, and the installation and maintenance are convenient, ensuring the stability of the lubricating effect.

[0039] The working principle of the present utility model is as follows: When in use, the sealing ring 4 is installed in the sealing groove 3, and the graphite column 6 is installed in the mounting holes on the outer surface. The oil injection plug 2 is opened to fill lubricating oil inside, and after filling, the oil injection plug 2 is installed back into the counterbore 12. During the use process, the lubricating oil flows out from the oil storage cavity 11 and finally flows out through the oil outlet hole 5 to lubricate the device, preventing the hard contact between the copper sleeve and the device, greatly reducing the wear of the copper sleeve, and extending the service life of the copper sleeve.

[0040] The above embodiments are only the preferred embodiments of the present utility model and cannot be used to limit the scope of protection of the present utility model. Any non-substantive changes and substitutions made by those skilled in the art based on the present utility model belong to the scope required to be protected by the present utility model.

Claims

1. A precision sealing copper sleeve for a ship's stern shaft, comprising a body (1), characterized in that: An oil storage cavity (11) is provided inside the body (1). The oil storage cavity (11) is filled with lubricating oil. A plurality of oil outlet holes (5) are provided on the inner wall of the body (1). The oil outlet holes (5) are arranged evenly at equal intervals and cover the entire inner wall of the body (1). The oil outlet holes (5) communicate with the oil storage cavity (11). An oil injection channel (13) is provided on the side of the body (1). The oil injection channel (13) communicates with the oil storage cavity (11). A counterbore (12) is provided at one end of the oil injection channel (13) away from the oil storage cavity (11). Threads are provided on the outer peripheral wall of the counterbore (12). An oil injection plug (2) is provided in the counterbore (12). The oil injection plug (2) includes a threaded post (21), a plug head (23) and a hexagonal hole (22). The plug head (23) is provided at the top end of the threaded post (21) and is integrally connected thereto. The hexagonal hole (22) is provided on the upper surface of the plug head (23). Sealing grooves (3) are provided on the outer peripheral wall of the body (1). There are two sealing grooves (3), which are symmetrically arranged at both ends of the body (1). Sealing rings (4) are provided inside the sealing grooves (3). The cross-section of the sealing groove (3) is trapezoidal.

2. The precision sealing copper sleeve for the stern shaft of a ship according to claim 1, wherein: A plurality of mounting holes are provided on the outer peripheral wall of the body (1). The mounting holes are evenly and equidistantly distributed on the entire outer surface of the body (1). Graphite columns (6) are provided in the mounting holes. The graphite columns (6) are in interference fit with the mounting holes.

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