Novel oilless bearing

Abstract

The novel oilless bearing comprises an outer copper sleeve, an inner copper sleeve and a positioning end cover, a positioning table is arranged at one end of the outer copper sleeve, the inner copper sleeve is arranged in the outer copper sleeve in a sliding mode, one end of the inner copper sleeve is placed on the positioning table, a connecting protruding ring is arranged on the other end face of the outer copper sleeve, and internal threads are arranged on the connecting protruding ring. A connecting groove is formed in one side of the positioning end cover, an external thread corresponding to the internal thread is arranged on the inner wall of the positioning end cover, positioning and locking of the outer copper sleeve and the inner copper sleeve are achieved through matching of the internal thread and the external thread, and meanwhile disassembly, replacement and maintenance are facilitated; and after the inner copper sleeve is positioned, a hollow heat dissipation cavity is formed between the inner copper sleeve and the inner wall of the outer copper sleeve, so that heat dissipation is facilitated. The utility model relates to the technical field of oilless bearings, and particularly provides a novel oilless bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-free bearings, in particular to a novel oil-free bearing. Background Art

[0002] Oil-free bearings do not require lubrication during operation to avoid oil contamination. They are generally self-lubricated through self-lubricating materials or special structures. They have the advantages of simple maintenance and long service life. They are suitable for food processing, medical equipment and other fields with high requirements for cleanliness.

[0003] Most oil-free bearings on the market now use a copper sleeve embedded in a graphite column design to achieve self-lubrication, without the need for grease. However, this lacks a certain heat dissipation effect in high ambient temperatures. At the same time, the inner or outer wall of the oil-free bearing needs to be replaced as a whole after wear, which increases costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing oil-free bearings are generally copper sleeves embedded in graphite columns, and the heat dissipation effect of the integral design is general. At the same time, after wear, the entire bearing needs to be replaced, and the replacement cost is high.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention proposes a new type of oil-free bearing, comprising an outer copper sleeve, an inner copper sleeve and a positioning end cover, one end of the outer copper sleeve is provided with a positioning platform, the inner copper sleeve is slidably arranged in the outer copper sleeve and one end is placed on the positioning platform, the other end surface of the outer copper sleeve is provided with a connecting convex ring and the connecting convex ring is provided with an internal thread, one side of the positioning end cover is provided with a connecting groove and the inner wall is provided with an external thread corresponding to the internal thread, the positioning and locking of the outer copper sleeve and the inner copper sleeve are achieved through the cooperation of the internal thread and the external thread, and it is convenient for disassembly, replacement and maintenance.

[0006] Preferred technical solution 1: The positioning platform is provided with a limiting concave platform, and after the inner copper sleeve is positioned, a hollow heat dissipation cavity is formed between the inner wall of the outer copper sleeve to facilitate heat dissipation.

[0007] Preferred technical solution two: A heat dissipation ring network is provided on the positioning end cover to assist in removing heat from the hollow heat dissipation cavity and further enhance the heat dissipation effect.

[0008] Preferred technical solution three: four groups of positioning protrusions are provided on the limiting recess, and one end of the inner copper sleeve is provided with a positioning groove corresponding to the positioning protrusions.

[0009] Preferred technical solution four: the surface of the outer copper sleeve is evenly distributed with multiple groups of self-lubricating holes 1, and a graphite column 1 is installed in the self-lubricating hole 1; the surface of the inner copper sleeve is evenly distributed with multiple groups of self-lubricating holes 2, and a graphite column 2 is installed in the self-lubricating hole 2.

[0010] Preferred technical solution five: the outer layer of the outer copper sleeve and the inner layer of the inner copper sleeve are both provided with a polytetrafluoroethylene coating.

[0011] The utility model proposes a novel oil-free bearing, which has the following beneficial effects by adopting the above structure:

[0012] (1) This solution includes an outer copper sleeve, an inner copper sleeve and a positioning end cover. The split design makes it easy to replace and maintain the outer copper sleeve or inner copper sleeve when a part is severely worn, thereby reducing maintenance and replacement costs.

[0013] (2) A hollow heat dissipation cavity is formed between the inner copper sleeve and the outer copper sleeve to facilitate heat dissipation. A heat dissipation ring net is provided on the positioning end cover to further increase the heat dissipation effect and improve the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of a new oil-free bearing proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure of a new oil-free bearing proposed in this utility model. Figure 1 ;

[0017] Figure 3 This is a schematic diagram of the explosion structure of a new oil-free bearing proposed in this utility model. Figure 2 ;

[0018] Figure 4 This is a schematic diagram of the internal structure of a new oil-free bearing proposed in this utility model. Figure 1 ;

[0019] Figure 5 This is a schematic diagram of the internal structure of a new oil-free bearing proposed in this utility model. Figure 2 .

[0020] Among them, 1. outer copper sleeve, 2. inner copper sleeve, 3. positioning end cover, 4. positioning platform, 5. connecting convex ring, 6. connecting groove, 7. limiting concave platform, 8. heat dissipation ring net, 9. positioning protrusion, 10. positioning groove, 11. self-lubricating hole one, 12. graphite column one, 13. self-lubricating hole two, 14. graphite column two. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figures 1 to 5 As shown, the technical solution adopted by the utility model is as follows: a new type of oil-free bearing, comprising an outer copper sleeve 1, an inner copper sleeve 2 and a positioning end cover 3, one end of the outer copper sleeve 1 is provided with a positioning platform 4, the inner copper sleeve 2 is slidably arranged in the outer copper sleeve 1 and one end is placed on the positioning platform 4, the other end face of the outer copper sleeve 1 is provided with a connecting convex ring 5 and the connecting convex ring 5 is provided with an internal thread, one side of the positioning end cover 3 is provided with a connecting groove 6 and the inner wall is provided with an external thread corresponding to the internal thread, the positioning and locking of the outer copper sleeve 1 and the inner copper sleeve 2 are achieved by cooperation of the internal thread and the external thread, and it is convenient for disassembly, replacement and maintenance.

[0024] like Figure 4 As shown, a limiting recess 7 is provided on the positioning platform 4. After the inner copper sleeve 2 is positioned, a hollow heat dissipation cavity is formed between the inner wall of the outer copper sleeve 1 to facilitate heat dissipation. A heat dissipation ring network 8 is provided on the positioning end cover 3 to assist in removing heat from the hollow heat dissipation cavity and further increase the heat dissipation effect.

[0025] like Figure 4 As shown, four groups of positioning protrusions 9 are provided on the limiting recess 7 , and one end of the inner copper sleeve 2 is provided with a positioning groove 10 corresponding to the positioning protrusions 9 .

[0026] The surface of the outer copper sleeve 1 is uniformly provided with multiple groups of self-lubricating holes 11, and graphite columns 12 are installed in the self-lubricating holes 11. The surface of the inner copper sleeve 2 is uniformly provided with multiple groups of self-lubricating holes 13, and graphite columns 14 are installed in the self-lubricating holes 13. The outer layer of the outer copper sleeve 1 and the inner layer of the inner copper sleeve 2 are both provided with polytetrafluoroethylene coating.

[0027] During specific use, graphite column 12 is installed in self-lubricating hole 11, and the outer wall is turned to the designed size. Graphite column 2 14 is installed in self-lubricating hole 2 13, and the inner wall is turned to the designed size. One end of the inner copper sleeve 2 is installed on the limiting recess 7 of the positioning platform 4. Positioning is achieved by cooperating with four groups of positioning protrusions 9 and positioning grooves 10. Then, the positioning end cover 3 is connected and fixed by cooperating with the external thread of the connecting groove 6 and the internal thread on the connecting protruding ring 5. The heat generated during use is accumulated in the hollow heat dissipation cavity between the inner copper sleeve 2 and the outer copper sleeve 1, and can be dissipated through the heat dissipation ring network 8.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, material, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, material, or apparatus.

[0029] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel oil-free bearing, comprising an outer copper sleeve (1), an inner copper sleeve (2) and a positioning end cover (3), characterized in that: One end of the outer copper sleeve (1) is provided with a positioning platform (4), the inner copper sleeve (2) is slidably arranged in the outer copper sleeve (1) and one end is placed on the positioning platform (4), the other end surface of the outer copper sleeve (1) is provided with a connecting convex ring (5) and the connecting convex ring (5) is provided with an internal thread, one side of the positioning end cover (3) is provided with a connecting groove (6) and the inner wall is provided with an external thread corresponding to the internal thread, and the positioning and locking of the outer copper sleeve (1) and the inner copper sleeve (2) are achieved by the cooperation of the internal thread and the external thread.

2. A novel oil-free bearing according to claim 1, characterized in that: The positioning platform (4) is provided with a limiting recessed platform (7), and after the inner copper sleeve (2) is positioned, a hollow heat dissipation cavity is formed between the inner wall of the outer copper sleeve (1).

3. A novel oil-free bearing according to claim 2, characterized in that: The positioning end cover (3) is provided with a heat dissipation ring network (8).

4. The novel oil-free bearing according to claim 3 is characterized in that: The limiting recess (7) is provided with four groups of positioning protrusions (9), and one end of the inner copper sleeve (2) is provided with a positioning groove (10) corresponding to the positioning protrusions (9).

5. The novel oil-free bearing according to claim 4 is characterized in that: The surface of the outer copper sleeve (1) is uniformly provided with a plurality of groups of self-lubricating holes (11), and a graphite column (12) is installed in the self-lubricating hole (11). The surface of the inner copper sleeve (2) is uniformly provided with a plurality of groups of self-lubricating holes (13), and a graphite column (14) is installed in the self-lubricating hole (13).

6. The novel oil-free bearing according to claim 5, characterized in that: The outer layer of the outer copper sleeve (1) and the inner layer of the inner copper sleeve (2) are both provided with a polytetrafluoroethylene coating.

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