Bearing sleeve of roller bearing

Abstract

The utility model relates to the technical field of bearing sleeves, in particular to a bearing sleeve of a roller bearing, which comprises an aluminum alloy bearing outer sleeve, four annular heat dissipation grooves are arranged on the outer surface of the aluminum alloy bearing outer sleeve, high-thermal-conductivity glue is filled in the four annular heat dissipation grooves, a ceramic coating is coated on the inner wall of the aluminum alloy bearing outer sleeve, and the ceramic coating is coated on the outer wall of the aluminum alloy bearing outer sleeve. A positioning clamping sleeve is movably sleeved with the aluminum alloy bearing outer sleeve, a roller fixing frame is movably sleeved with the middle of the inner wall of the positioning clamping sleeve, a plurality of roller bodies are movably connected to the upper end of the roller fixing frame in a penetrating mode, and a plurality of through rectangular through openings are formed in the middle of the inner wall of the roller fixing frame. According to the bearing sleeve of the roller bearing, the aluminum alloy outer sleeve, the heat dissipation grooves, the high-thermal-conductivity glue, the ceramic coating and other structures are adopted, so that the bearing sleeve has good heat dissipation and abrasion resistance, precise lubrication can be achieved, the bearing sleeve can operate stably, and the service life can be further prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bearing sleeve technology, and in particular to a bearing sleeve for a roller bearing. Background Technology

[0002] Roller bearings are crucial in mechanical transmission systems. Their bearing sleeves support and position the rollers, ensuring they roll along specific tracks. In industrial production, they are widely used in machine tool spindles, automobile wheel hubs, and motor rotors. Taking machine tool spindles as an example, their high-speed rotation requires a high-precision bearing system to ensure machining accuracy. Roller bearing sleeves can stably support the rollers, helping the main bearing withstand complex loads such as cutting forces and maintain good rotational accuracy to meet precision machining requirements. However, traditional bearing sleeves have drawbacks. In terms of materials, long-term friction leads to severe wear. In terms of structural design, heat dissipation is insufficient. At high speeds or high loads, the heat generated by friction between the rollers and the bearing sleeve cannot be dissipated in time, causing a sudden rise in internal temperature and a decline in material properties, such as reduced hardness and expansion deformation. Utility Model Content

[0003] The main objective of this invention is to provide a bearing sleeve for roller bearings, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A roller bearing sleeve includes an aluminum alloy bearing outer sleeve. Four annular heat dissipation grooves are formed on the outer surface of the aluminum alloy bearing outer sleeve, and each of the four annular heat dissipation grooves is filled with a highly thermally conductive adhesive. The inner wall of the aluminum alloy bearing outer sleeve is coated with a ceramic coating. A positioning sleeve is movably fitted inside the aluminum alloy bearing outer sleeve. A roller retainer is movably fitted at the center of the inner wall of the positioning sleeve. Several roller bodies are movably connected to the upper end of the roller retainer. Several [unclear text - possibly related to a design or feature] are formed at the center of the inner wall of the roller retainer. A rectangular through-hole is provided, and several rectangular through-holes correspond one-to-one with the positions of several rollers. Several rollers are movably fitted into a positioning sleeve. The upper and lower ends of several rollers are tightly but not fixed to the inner upper and inner lower walls of the positioning sleeve, respectively. A lubricating graphite holding frame is movably fitted inside the roller fixing frame. A high-carbon chromium bearing steel inner sleeve is fixedly connected to the inner wall of the lubricating graphite holding frame. Several through-holes for lubricating material are opened on the outer surface of the lubricating graphite holding frame.

[0006] Preferably, the inner diameter area of ​​the aluminum alloy bearing sleeve is equal to the outer diameter area of ​​the positioning sleeve, and the ceramic coating is tightly abutted against the outer surface of the positioning sleeve but not fixed.

[0007] By adopting the above technical solution: the aluminum alloy outer sleeve and the positioning sleeve are of the same diameter, the installation is precise and stable, the ceramic coating is wear-resistant and reduces damage and abuts against the positioning sleeve, which not only protects the outer sleeve but also assists in positioning, which is conducive to the smooth operation of the rollers and improves the overall performance and life of the bearing.

[0008] Preferably, the plurality of rollers and the plurality of rectangular openings are arranged in a circular array.

[0009] By adopting the above technical solution—the circular array of rollers and rectangular openings—the stress is evenly distributed, reducing local stress concentration, which can enhance bearing stability and improve load-bearing and operational performance.

[0010] Preferably, the inner diameter area of ​​the roller holder is equal to the outer diameter area of ​​the lubricating graphite container.

[0011] By adopting the above technical solution, the roller fixing frame and the lubricating graphite holding frame are matched with the same diameter to ensure a compact and stable structure, which is conducive to the uniform distribution of graphite for lubrication. Together with other components, it ensures the smooth and low-friction operation of the bearing.

[0012] Preferably, several of the rollers are in close contact with, but not fixed to, the outer surface of the lubricated graphite container.

[0013] By adopting the above technical solution, the roller body is in close contact with the lubricating graphite container, which can make full use of graphite lubrication, reduce friction and wear, cooperate with various components, maintain the bearing's efficient operation, and extend its service life.

[0014] Preferably, the lubricating graphite container is connected to the interior of the positioning sleeve through several lubricant outlet holes.

[0015] By adopting the above technical solution: the lubricating graphite holding frame is connected to the positioning sleeve through the lubricant outlet hole, so that the graphite can accurately lubricate the rollers. Combined with other accessories, it reduces frictional heat and improves the working stability and accuracy of the bearing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In this utility model, the ceramic coating inside the aluminum alloy outer sleeve provides wear resistance and reduces frictional damage to the rollers. The high-carbon chromium bearing steel inner sleeve has high strength and excellent wear resistance. The lubricating graphite container and outlet holes allow the graphite to effectively lubricate the rollers, reducing the coefficient of friction and greatly reducing wear. In addition, the tight fit and reasonable layout of the rollers and positioning sleeves ensure stable movement and uniform force distribution, reducing excessive local friction. Therefore, the coordinated operation of all components, from material selection to structural design, reduces wear in multiple ways, significantly extends the service life of the bearing sleeve, and improves overall performance and reliability.

[0018] 2. In this utility model, the annular heat dissipation groove of the aluminum alloy jacket is combined with high thermal conductivity adhesive, which greatly increases the heat dissipation area and efficiency, and can quickly dissipate the heat generated by friction. The rollers are closely fitted with each component and the layout is reasonable, which reduces the generation of frictional heat. Under high-speed or high-load conditions, the good heat dissipation design can effectively avoid heat accumulation and prevent the internal temperature from rising sharply, thereby ensuring the stability of material performance and avoiding problems such as reduced hardness and expansion deformation caused by temperature rise. This ensures that the bearing sleeve can still operate reliably under harsh conditions, extend its service life and maintain a high-precision working state. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the bearing sleeve of a roller bearing according to the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the aluminum alloy bearing sleeve of a roller bearing according to the present invention.

[0021] Figure 3 This is a schematic diagram of the connection structure between the positioning sleeve, the roller fixing frame, and the roller body of a roller bearing according to the present invention.

[0022] Figure 4 This is a schematic diagram of the connection structure between the lubricating graphite holding frame and the high-carbon chromium bearing steel inner sleeve of a roller bearing according to this utility model.

[0023] In the diagram: 1. Aluminum alloy bearing outer sleeve; 2. Annular heat dissipation groove; 3. High thermal conductivity adhesive; 4. Positioning sleeve; 5. Roller body; 6. Lubricating graphite container frame; 7. High carbon chromium bearing steel inner sleeve; 8. Ceramic coating; 9. Roller fixing frame; 10. Rectangular through-hole; 11. Lubricating material outlet. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Please see Figure 1-4 This utility model provides a technical solution:

[0028] A roller bearing sleeve includes an aluminum alloy bearing outer sleeve 1. The outer surface of the aluminum alloy bearing outer sleeve 1 has four annular heat dissipation grooves 2, each filled with a highly thermally conductive adhesive 3. The inner wall of the aluminum alloy bearing outer sleeve 1 is coated with a ceramic coating 8. A positioning sleeve 4 is movably fitted inside the aluminum alloy bearing outer sleeve 1. A roller retainer 9 is movably fitted into the middle of the inner wall of the positioning sleeve 4. Several roller bodies 5 are movably connected to the upper end of the roller retainer 9. Several through-holes are formed in the middle of the inner wall of the roller retainer 9. A rectangular opening 10, several rectangular openings 10 correspond one-to-one with the positions of several rollers 5, several rollers 5 are movably fitted into the positioning sleeve 4, the upper and lower ends of several rollers 5 are tightly but not fixed to the inner upper and inner lower walls of the positioning sleeve 4 respectively, a lubricating graphite holding frame 6 is movably fitted inside the roller fixing frame 9, a high carbon chromium bearing steel inner sleeve 7 is fixedly connected to the inner wall of the lubricating graphite holding frame 6, and several through lubricating material outlet holes 11 are opened on the outer surface of the lubricating graphite holding frame 6.

[0029] In this embodiment, the inner diameter area of ​​the aluminum alloy bearing outer sleeve 1 is equal to the outer diameter area of ​​the positioning sleeve 4. The ceramic coating 8 is tightly abutted against the outer surface of the positioning sleeve 4 but not fixed. Several rollers 5 and several rectangular through holes 10 are arranged in a ring array. The inner diameter area of ​​the roller fixing frame 9 is equal to the outer diameter area of ​​the lubricating graphite holding frame 6. Several rollers 5 are tightly attached to the outer surface of the lubricating graphite holding frame 6 but not fixed. The lubricating graphite holding frame 6 communicates with the interior of the positioning sleeve 4 through several lubricating material outlet holes 11.

[0030] Through the above solution: the aluminum alloy bearing outer sleeve 1 is made of aluminum alloy to reduce weight and facilitate heat dissipation. The four annular heat dissipation grooves 2 on its outer surface and the high thermal conductivity adhesive 3 filling it significantly improve heat dissipation efficiency and effectively solve the problem of insufficient heat dissipation. The inner wall of the aluminum alloy bearing outer sleeve 1 is coated with a ceramic coating 8 to resist wear and reduce the damage caused by friction between the rollers 5 and the outer sleeve, thus alleviating the severe wear of the material. The positioning sleeve 4 fits tightly with the aluminum alloy bearing outer sleeve 1 to ensure structural stability. The annular array of rollers 5 is interlocked with the roller fixing frame 9 to ensure uniform force distribution. The roller fixing frame 9 is sleeved with the lubricating graphite holding frame 6 with the same diameter. The rollers 5 are in close contact with the lubricating graphite holding frame 6. Through the lubricating material outlet hole 11, graphite can seep out to lubricate the rollers 5, reduce the coefficient of friction, and reduce the generation of frictional heat. At high speed or high load, this structure can effectively control the generation and dissipation of heat, prevent the material performance from deteriorating due to a sudden increase in internal temperature, ensure the stable operation of the bearing sleeve for a long time, and improve the overall service life and working performance.

[0031] It should be noted that this utility model is a bearing sleeve for a roller bearing. During use, firstly, the rollers 5 roll within the positioning sleeve 4, ensuring stable motion and load transmission by tightly adhering to the upper and lower walls of the positioning sleeve 4. The rollers 5 are arranged in a ring array and are interlocked with the roller fixing frame 9, ensuring even force distribution. Four annular heat dissipation grooves 2 are formed on the outer surface of the aluminum alloy bearing sleeve 1, and each of the four annular heat dissipation grooves 2 is filled with high thermal conductivity adhesive 3, which efficiently dissipates heat and reduces operating temperature. Furthermore, a ceramic coating 8 is applied to the inner wall of the aluminum alloy bearing sleeve 1. The roller 5 and the outer surface of the positioning sleeve 4 are tightly abutted together, which can reduce the friction between the roller 5 and the outer sleeve and improve wear resistance. In addition, the graphite in the lubricating graphite holding frame 6 seeps out through the lubricant outlet hole 11. Because the roller 5 is in close contact with its outer surface, the roller 5 is effectively lubricated, reducing the coefficient of friction, reducing frictional heat generation and further reducing wear. The positioning sleeve 4 is precisely fitted inside the aluminum alloy bearing outer sleeve 1. The size matching of the two ensures a compact and stable structure. The equal diameter fit between the roller fixing frame 9 and the lubricating graphite holding frame 6 makes the cooperation of each component smoother and jointly ensures the efficient and stable operation of the roller bearing sleeve.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bearing sleeve for a roller bearing, comprising an aluminium alloy bearing sleeve (1), characterised in that: The outer surface of the aluminum alloy bearing outer sleeve (1) has four annular heat dissipation grooves (2), each of which is filled with high thermal conductivity adhesive (3). The inner wall of the aluminum alloy bearing outer sleeve (1) is coated with a ceramic coating (8). A positioning sleeve (4) is movably fitted inside the aluminum alloy bearing outer sleeve (1). A roller fixing frame (9) is movably fitted in the middle of the inner wall of the positioning sleeve (4). Several roller bodies (5) are movably connected to the upper end of the roller fixing frame (9). Several through rectangular openings (10) are opened in the middle of the inner wall of the roller fixing frame (9). Several rectangular openings (10) correspond one-to-one with the positions of several rollers (5). Several rollers (5) are movably fitted into the positioning sleeve (4). The upper and lower ends of several rollers (5) are tightly but not fixed to the inner upper and inner lower walls of the positioning sleeve (4). A lubricating graphite holding frame (6) is movably fitted inside the roller fixing frame (9). A high carbon chromium bearing steel inner sleeve (7) is fixedly connected to the inner wall of the lubricating graphite holding frame (6). Several through lubricating material outlet holes (11) are opened on the outer surface of the lubricating graphite holding frame (6).

2. A bearing sleeve for a roller bearing according to claim 1, characterized in that: The inner diameter area of ​​the aluminum alloy bearing sleeve (1) is equal to the outer diameter area of ​​the positioning sleeve (4), and the ceramic coating (8) is tightly abutted against the outer surface of the positioning sleeve (4) but not fixed.

3. A bearing sleeve for a roller bearing according to claim 1, characterized in that: Several rollers (5) and several rectangular openings (10) are arranged in a ring array.

4. A bearing sleeve for a roller bearing according to claim 1, characterized in that: The inner diameter area of ​​the roller holder (9) is equal to the outer diameter area of ​​the lubricating graphite container (6).

5. A bearing sleeve for a roller bearing according to claim 1, characterized in that: Several rollers (5) are in close contact with but not fixed to the outer surface of the lubricating graphite container (6).

6. A bearing sleeve for a roller bearing according to claim 1, characterized in that: The lubricating graphite container (6) is connected to the interior of the positioning sleeve (4) through several lubricant outlet holes (11).

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