Coal mining machine drum shaft sealing structure

Abstract

The utility model relates to the technical field of sealing, and discloses a sealing structure for a drum shaft of a coal mining machine, comprising an outer ring, the inner cavity of the outer ring is provided with a rolling body, the outer side of the outer ring is fixedly connected with a mounting threaded ring, the inner cavity of the mounting threaded ring is meshed with a threaded rod, the surface of the threaded rod is meshed with a disassembly threaded ring, the side of the disassembly threaded ring close to the center of the outer ring is fixedly connected with a movable protective shell, the side of the movable protective shell close to the outer ring is fixedly connected with a sliding ring, and the surface of the sliding ring is slidably connected with an inner ring. In this way, dust generated by the coal mining machine during the coal mining process is prevented from entering the inner cavity of the outer ring to affect the smoothness of the rolling body, and the movable protective shell can be quickly disassembled through the threaded rod, so that the rolling body can be replaced, which is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing, and more specifically to a sealing structure of a drum shaft of a coal mining machine. Background Art

[0002] Coal is mined using a coal mining machine, and the drum shaft of the coal mining machine is connected to a driving device, which drives the drum to rotate via the drum shaft. The drum shaft needs to be sealed using a sealing structure, and the sealing structure in the prior art generally has a bearing, through which the sealed drum shaft can rotate stably. However, the operating environment of the coal mining machine is relatively harsh, with a lot of dust. This causes dust to enter the bearing during use, thereby affecting the rotation performance of the sealing structure. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a coal mining machine drum shaft sealing structure, which has the advantage of avoiding affecting the rotation performance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mining machine drum shaft sealing structure, comprising an outer ring, a rolling body is placed in the inner cavity of the outer ring, a mounting threaded ring is fixedly connected to the outer side of the outer ring, a threaded rod is meshed in the inner cavity of the mounting threaded ring, a disassembly threaded ring is meshed on the surface of the threaded rod, a movable protective shell is fixedly connected to one side of the disassembly threaded ring near the center of the outer ring, a sliding ring is fixedly connected to one side of the movable protective shell near the outer ring, and an inner ring is slidably connected to the surface of the sliding ring.

[0005] As an optimal technical solution of the utility model, a fixed protective shell is fixedly connected to the right side of the outer ring, an oil seal ring is fixedly connected to the right side of the fixed protective shell, a blocking rod is fixedly connected to the top of the oil seal ring, and a flow groove is opened in the inner cavity of the inner ring.

[0006] As a preferred technical solution of the utility model, there are two mounting threaded rings, and the two mounting threaded rings are respectively fixedly connected to the upper and lower sides of the outer ring.

[0007] As a preferred technical solution of the utility model, a sliding groove is provided on the left side of the inner ring, and the sliding ring is slidably connected to the inner cavity of the sliding groove.

[0008] As a preferred technical solution of the utility model, an O-ring is fixedly connected to a side of the oil seal ring away from the fixed protective shell.

[0009] As a preferred technical solution of the utility model, the top of the oil seal ring is fixedly connected with a threaded pipe, and the blocking rod is threadedly connected to the inner cavity of the threaded pipe.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model uses a threaded rod to thread the installation threaded ring and the disassembly threaded ring, thereby fixing the movable protective shell, and then slidingly connecting with the inner ring through the sliding ring, so that the inner cavity of the outer ring is protected by the movable protective shell, thereby preventing the coal mining machine from generating dust in the process of coal mining, which enters the inner cavity of the outer ring and affects the smoothness of the rolling body, and the movable protective shell can be quickly disassembled through the threaded rod, so that the rolling body can be replaced simply and conveniently.

[0012] 2. The utility model seals the roller shaft through the lubricating oil in the inner cavity of the oil seal ring, and then guides the lubricating oil in the inner cavity of the oil seal ring through the flow groove, so that the lubricating oil can enter between the inner ring and the roller shaft to lubricate them, thereby ensuring sealing while maintaining lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the oil seal ring connection structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the outer ring connection of the utility model structure;

[0016] Figure 4 For this utility model Figure 3 The connection diagram at A is enlarged;

[0017] Figure 5 This is a schematic diagram of the threaded ring connection for installing the structure of the utility model.

[0018] In the figure: 1. Outer ring; 2. Rolling element; 3. Fixed protective shell; 4. Inner ring; 5. Install threaded ring; 6. Threaded rod; 7. Remove threaded ring; 8. Move protective shell; 9. Sliding ring; 10. Sliding groove; 11. Oil seal ring; 12. Blocking rod; 13. Flow groove; 14. O-ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] like Figures 1 to 5As shown, the utility model provides a coal mining machine drum shaft sealing structure, comprising an outer ring 1, a rolling body 2 is placed in the inner cavity of the outer ring 1, a mounting threaded ring 5 is fixedly connected to the outer side of the outer ring 1, a threaded rod 6 is meshed in the inner cavity of the mounting threaded ring 5, a disassembly threaded ring 7 is meshed on the surface of the threaded rod 6, a movable protective shell 8 is fixedly connected to the side of the disassembly threaded ring 7 close to the center of the outer ring 1, a sliding ring 9 is fixedly connected to the side of the movable protective shell 8 close to the outer ring 1, and an inner ring 4 is slidably connected to the surface of the sliding ring 9;

[0021] The installation threaded ring 5 and the disassembly threaded ring 7 are threadedly connected through the threaded rod 6, thereby fixing the movable protective shell 8, and then slidingly connected with the inner ring 4 through the sliding ring 9, so that the inner cavity of the outer ring 1 is protected by the movable protective shell 8, thereby preventing the coal mining machine from generating dust during the coal mining process. The dust enters the inner cavity of the outer ring 1 and affects the smoothness of the rolling element 2, and the movable protective shell 8 can be quickly disassembled through the threaded rod 6, so that the rolling element 2 can be replaced simply and conveniently.

[0022] Among them, the right side of the outer ring 1 is fixedly connected with a fixed protective shell 3, the right side of the fixed protective shell 3 is fixedly connected with an oil seal ring 11, the top of the oil seal ring 11 is fixedly connected with a blocking rod 12, and the inner cavity of the inner ring 4 is provided with a flow groove 13;

[0023] The roller shaft is sealed by the lubricating oil in the inner cavity of the oil seal ring 11, and then the lubricating oil in the inner cavity of the oil seal ring 11 is guided through the flow groove 13, so that the lubricating oil can enter between the inner ring 4 and the roller shaft to lubricate them, thereby ensuring sealing while maintaining lubrication.

[0024] There are two mounting thread rings 5, and the two mounting thread rings 5 ​​are fixedly connected to the upper and lower sides of the outer ring 1 respectively;

[0025] By disposing two mounting threaded rings 5 ​​, the threaded rod 6 can be connected to the mounting threaded ring 5 , thereby fixing the movable protective shell 8 , and then protecting the inner cavity of the outer ring 1 through the movable protective shell 8 .

[0026] The left side of the inner ring 4 is provided with a sliding groove 10, and the sliding ring 9 is slidably connected to the inner cavity of the sliding groove 10;

[0027] Through the sliding groove 10 on the left side of the inner ring 4, the sliding groove 10 can fix and support the sliding ring 9, thereby allowing the inner ring 4 to rotate stably.

[0028] Among them, an O-ring 14 is fixedly connected to the side of the oil seal ring 11 away from the fixed protective shell 3;

[0029] By disposing the O-ring 14, the O-ring 14 can wrap and seal the roller shaft, thereby improving the sealing performance.

[0030] Among them, the top of the oil seal ring 11 is fixedly connected with a threaded pipe, and the blocking rod 12 is threadedly connected to the inner cavity of the threaded pipe;

[0031] By setting the threaded tube, the blocking rod 12 can be threadedly connected to the inner cavity of the threaded tube, thereby blocking the inner cavity of the oil seal ring 11, thereby preventing the lubricating oil in the inner cavity of the oil seal ring 11 from leaking out.

[0032] The working principle and use process of the utility model are as follows: the inner ring 4 is sleeved on the surface of the roller shaft, and then the roller shaft drives the inner ring 4 to rotate through the rolling body 2, and the lubricating oil in the inner cavity of the oil seal ring 11 enters the space between the inner ring 4 and the roller shaft along the flow groove 13 for lubrication, and the roller shaft is sealed through the O-ring 14 and the inner ring 4;

[0033] When the lubricating oil in the inner cavity of the oil seal ring 11 is used up, it can be added by unscrewing the blocking rod 12, and then the threaded rod 6 is engaged with the installation threaded ring 5 and the removal threaded ring 7 to install the movable protective shell 8 so that the movable protective shell 8 protects the rolling element 2.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] 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 coal mining machine drum shaft sealing structure, comprising an outer ring (1), characterized in that: A rolling body (2) is placed in the inner cavity of the outer ring (1); a mounting threaded ring (5) is fixedly connected to the outer side of the outer ring (1); a threaded rod (6) is meshed in the inner cavity of the mounting threaded ring (5); a disassembly threaded ring (7) is meshed on the surface of the threaded rod (6); a movable protective shell (8) is fixedly connected to the side of the disassembly threaded ring (7) close to the center of the outer ring (1); a sliding ring (9) is fixedly connected to the side of the movable protective shell (8) close to the outer ring (1); and the inner ring (4) is slidably connected to the surface of the sliding ring (9).

2. A coal mining machine drum shaft sealing structure according to claim 1, characterized in that: The right side of the outer ring (1) is fixedly connected to a fixed protective shell (3), the right side of the fixed protective shell (3) is fixedly connected to an oil seal ring (11), the top of the oil seal ring (11) is fixedly connected to a blocking rod (12), and the inner cavity of the inner ring (4) is provided with a flow groove (13).

3. A coal mining machine drum shaft sealing structure according to claim 1, characterized in that: There are two mounting threaded rings (5) in total, and the two mounting threaded rings (5) are respectively fixedly connected to the upper and lower sides of the outer ring (1).

4. A coal mining machine drum shaft sealing structure according to claim 1, characterized in that: A sliding groove (10) is provided on the left side of the inner ring (4), and the sliding ring (9) is slidably connected to the inner cavity of the sliding groove (10).

5. A coal mining machine drum shaft sealing structure according to claim 2, characterized in that: An O-type sealing ring (14) is fixedly connected to the side of the oil sealing ring (11) away from the fixed protective shell (3).

6. A coal mining machine drum shaft sealing structure according to claim 2, characterized in that: The top of the oil seal ring (11) is fixedly connected with a threaded pipe, and the blocking rod (12) is threadedly connected to the inner cavity of the threaded pipe.

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