Precise self-aligning roller bearing

Abstract

The utility model relates to the field of bearings, and discloses a precise self-aligning roller bearing, which comprises an outer ring, an oil duct at the center of the outer side wall of the outer ring, three oil injection ports annularly arranged on the outer side wall of the oil duct, an oil groove at the center of the inside of the outer ring, an inner ring at the inner side of the outer ring, and an isolation block at the center of the outer side wall of the inner ring. Raceways are arranged on the inner side wall of the outer ring and the outer side wall of the inner ring, hard coatings are arranged on the outer side walls of the two raceways, a plurality of balls are annularly arranged in the two raceways on the two sides of the isolation block, and a reinforced protection structure is arranged on the inner side wall of the inner ring. According to the utility model, through the reinforced protection structure of the aluminum alloy reinforced layer and the carbon fiber reinforced plastic reinforced layer, and the threads arranged on the inner side wall, the connection and the fixation are convenient, so that the structural strength of the inner ring is increased, the inner ring can bear larger load and impact force, the overall weight is reduced, and the stability and the practicability are improved.

Description

Technical Field

[0001] The utility model relates to the field of bearings, in particular to a precision spherical roller bearing. Background Art

[0002] Precision spherical roller bearings are rolling bearings with self-aligning capabilities. They can withstand heavy loads and impact loads, and can still work normally when there is a certain angular deviation between the shaft and the bearing seat. This type of bearing is widely used in various industrial fields, such as papermaking machinery, rolling mills, mining machinery, lifting machinery, etc.

[0003] Since traditional precision spherical roller bearings usually use steel as the main material, which makes them heavy, increasing the burden on the mechanical system, especially in applications that require lightweight design, their performance will degrade in high temperature environments, which limits their application in high temperature working environments. Therefore, technical personnel in this field provide a precision spherical roller bearing to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a precision spherical roller bearing is proposed. The reinforced protection structure of the aluminum alloy reinforcement layer and the carbon fiber reinforced plastic reinforcement layer is provided, and the inner wall is also provided with a thread for easy connection and fixation. This structure not only increases the structural strength of the inner ring, enabling it to withstand greater loads and impact forces, but also reduces the overall weight, improves stability and practicality. A ceramic coating is provided on the outer wall of the raceway as a hard coating. The ceramic coating has the characteristics of high hardness, high temperature resistance and low friction coefficient, which can reduce the friction and wear between the ball and the raceway, and improve the surface hardness and wear resistance of the raceway, thereby improving the working efficiency and reliability of the bearing. An oil channel is provided at the center of the outer wall of the outer ring, and the outer wall is provided with three oil filling ports arranged in a ring shape, and an oil groove is provided at the inner center. This oil filling design can provide lubricating oil to the bearing more evenly and conveniently, effectively reduce friction and wear, and improve the service life and performance of the bearing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precision spherical roller bearing, comprising an outer ring, an oil passage at the center of the outer wall of the outer ring, three oil filling ports arranged in an annular manner on the outer wall of the oil passage, an oil groove at the center of the inner part of the outer ring, an inner ring arranged on the inner side of the outer ring, an isolation block at the center of the outer wall of the inner ring, raceways are arranged on the inner wall of the outer ring and the outer wall of the inner ring, hard coatings are arranged on the outer walls of the two raceways, multiple balls are arranged in an annular manner on the inside of the two raceways on both sides of the isolation block, a reinforced protection structure is arranged on the inner wall of the inner ring, and threads are arranged on the inner wall of the reinforced protection structure;

[0006] Through the above technical scheme, through the reinforced protection structure of the aluminum alloy reinforcement layer and the carbon fiber reinforced plastic reinforcement layer, the inner wall is also provided with threads for easy connection and fixation. This structure not only increases the structural strength of the inner ring, enabling it to withstand greater loads and impact forces, but also reduces the overall weight, improves stability and practicality. The outer wall of the raceway is provided with a ceramic coating as a hard coating. The ceramic coating has the characteristics of high hardness, high temperature resistance and low friction coefficient. It can reduce the friction and wear between the ball and the raceway, and improve the surface hardness and wear resistance of the raceway, thereby improving the working efficiency and reliability of the bearing. An oil channel is provided at the center of the outer wall of the outer ring, and the outer wall is provided with three oil filling ports arranged in a ring shape, and an oil groove is provided at the center of the inner wall. This oil filling design can provide lubricating oil to the bearing more evenly and conveniently, effectively reduce friction and wear, and improve the service life and performance of the bearing.

[0007] Further, the enhanced protection structure comprises an enhanced layer and a strengthening layer, the enhanced layer is sleeved on the inner side wall of the inner ring, the strengthening layer is sleeved on the inner side wall of the enhanced layer, and the thread is arranged on the inner side wall of the enhanced layer;

[0008] Through the above technical solution, the reinforcement layer is tightly sleeved on the inner wall of the inner ring, which can increase the structural strength of the inner ring and withstand greater loads and impact forces. The reinforcement layer is sleeved on the inner wall of the reinforcement layer to further improve the overall strength and stability of the inner ring. The thread is set on the inner wall of the reinforcement layer to facilitate connection and fixation with other components.

[0009] Furthermore, the reinforcement layer is made of aluminum alloy;

[0010] Through the above technical solution, the aluminum alloy has good strength and toughness. The reinforcement layer is made of aluminum alloy, which can effectively share the load borne by the inner ring and resist external pressure and impact when the bearing is running.

[0011] Furthermore, the reinforcement layer is made of carbon fiber reinforced plastic;

[0012] Through the above technical solution, carbon fiber reinforced plastic has the characteristics of high strength, high modulus and light weight. The reinforcement layer uses this material to further enhance the structural strength of the inner ring while reducing the overall weight. When the bearing is working, it can effectively resist torsional and tensile stresses.

[0013] Furthermore, a plurality of the balls are rotatably connected at both sides of the inner center of the raceway;

[0014] Through the above technical solution, the balls rotate at the positions on both sides of the inner center of the raceway. When the inner ring and the outer ring move relatively, the balls roll at specific positions, thereby realizing rolling friction and reducing friction.

[0015] Furthermore, the hard coating material is a ceramic coating;

[0016] Through the above technical solution, the ceramic coating has the characteristics of high hardness, high temperature resistance and low friction coefficient. After being coated on the raceway surface, it can reduce the friction and wear between the ball and the raceway during the operation of the bearing, while improving the surface hardness and wear resistance of the raceway.

[0017] Furthermore, a protective cover is provided between the inner ring and the outer ring of the two side walls of the plurality of balls;

[0018] Through the above technical solution, the protective cover is installed between the inner ring and the outer ring of the two side walls of the ball, forming a closed space to prevent external dust, impurities and moisture from entering the area where the ball is located.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, the precision spherical roller bearing has an enhanced protection structure with an aluminum alloy reinforcement layer and a carbon fiber reinforced plastic reinforcement layer, and the inner wall is also provided with threads for easy connection and fixation. This structure not only increases the structural strength of the inner ring, enabling it to withstand greater loads and impact forces, but also reduces the overall weight and improves stability and practicality.

[0021] 2. In the utility model, a ceramic coating is provided on the outer wall of the raceway as a hard coating. The ceramic coating has the characteristics of high hardness, high temperature resistance and low friction coefficient, which can reduce the friction and wear between the ball and the raceway, improve the surface hardness and wear resistance of the raceway, thereby improving the working efficiency and reliability of the bearing.

[0022] 3. In the utility model, an oil channel is provided at the center of the outer wall of the outer ring, three oil filling ports are arranged in a ring shape on the outer wall, and an oil groove is provided at the center of the interior. This oil filling design can provide lubricating oil to the bearing more evenly and conveniently, effectively reduce friction and wear, and improve the service life and performance of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a precision spherical roller bearing proposed by the utility model;

[0024] Figure 2 A side sectional view of a precision spherical roller bearing proposed by the utility model;

[0025] Figure 3 This is a front cross-sectional view of a precision spherical roller bearing proposed by the utility model;

[0026] Figure 4 The utility model is a three-dimensional cross-sectional view of a precision spherical roller bearing.

[0027] Legend:

[0028] 1. Outer ring; 2. Oil filling port; 3. Oil groove; 4. Ball; 5. Inner ring; 6. Enhanced protection structure; 601. Reinforcement layer; 602. Strengthening layer; 7. Protective cover; 8. Thread; 9. Oil channel; 10. Raceway; 11. Isolation block; 12. Hard coating. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1-4 The utility model provides an embodiment: a precision spherical roller bearing, comprising an outer ring 1, an oil passage 9 at the center of the outer wall of the outer ring 1, the outer wall of the oil passage 9 is provided with three oil filling ports 2 arranged in a ring shape, an oil groove 3 is provided at the center of the inner part of the outer ring 1, an inner ring 5 is provided on the inner side of the outer ring 1, an isolation block 11 is provided at the center of the outer wall of the inner ring 5, raceways 10 are provided on the inner wall of the outer ring 1 and the outer wall of the inner ring 5, hard coatings 12 are provided on the outer walls of the two raceways 10, multiple balls 4 are arranged in a ring shape inside the two raceways 10 on both sides of the isolation block 11, a reinforced protection structure 6 is provided on the inner wall of the inner ring 5, and a thread 8 is provided on the inner wall of the reinforced protection structure 6.

[0031] When the outer ring 1 and the inner ring 5 rotate relative to each other, the balls 4 roll in the raceway 10 to achieve force transmission and motion conversion. Lubricating oil can be injected into the oil channel 9 through the oil filling port 2. After the lubricating oil enters the oil groove 3, it can lubricate the balls 4 and the raceway 10 during the operation of the bearing to reduce friction and wear. The isolation block 11 separates the balls 4 on both sides to make the movement of the balls 4 more stable and orderly. The enhanced protection structure 6 of the inner wall of the inner ring 5 provides additional strength and protection for the inner ring 5. The thread 8 of the inner wall is used to connect with other components. The hard coating 12 on the outer wall of the raceway 10 can improve the wear resistance and corrosion resistance of the raceway 10. Multiple balls 4 are rotatably connected to the inner center of the raceway 10 on both sides. The balls 4 are on the raceway 10. The inner center rotates at the positions on both sides. When the inner ring 5 and the outer ring 1 move relative to each other, the ball 4 rolls at a specific position, thereby realizing rolling friction and reducing friction. The hard coating 12 is made of ceramic coating. The ceramic coating has the characteristics of high hardness, high temperature resistance and low friction coefficient. After being coated on the surface of the raceway 10, during the operation of the bearing, it can reduce the friction and wear between the ball 4 and the raceway 10, and at the same time improve the surface hardness and wear resistance of the raceway 10. Protective covers 7 are provided between the inner ring 5 and the outer ring 1 on both side walls of the multiple balls 4. The protective covers 7 are installed between the inner ring 5 and the outer ring 1 on both side walls of the ball 4 to form a closed space to prevent external dust, impurities and moisture from entering the area where the ball 4 is located.

[0032] The enhanced protection structure 6 includes a reinforcement layer 601 and a strengthening layer 602. The reinforcement layer 601 is sleeved on the inner wall of the inner ring 5, the reinforcement layer 602 is sleeved on the inner wall of the reinforcement layer 601, and the thread 8 is arranged on the inner wall of the reinforcement layer 602. The reinforcement layer 601 is tightly sleeved on the inner wall of the inner ring 5, which can increase the structural strength of the inner ring 5 and withstand greater loads and impact forces. The reinforcement layer 602 is sleeved on the inner wall of the reinforcement layer 601, which further improves the overall strength and stability of the inner ring 5. The thread 8 is arranged on the inner wall of the reinforcement layer 602, which is convenient for connection and fixation with other components.

[0033] The reinforcement layer 601 is made of aluminum alloy, which has good strength and toughness. The reinforcement layer 601 is made of aluminum alloy, which can effectively share the load borne by the inner ring 5 and resist external pressure and impact when the bearing is running. The reinforcement layer 602 is made of carbon fiber reinforced plastic, which has the characteristics of high strength, high modulus and light weight. The reinforcement layer 602 is made of this material, which can further enhance the structural strength of the inner ring 5 and reduce the overall weight. When the bearing is working, it can effectively resist torsional and tensile stresses.

[0034] Working principle: When the outer ring 1 and the inner ring 5 rotate relative to each other, the ball 4 rolls in the raceway 10 to achieve force transmission and motion conversion. Lubricating oil can be injected into the oil channel 9 through the oil filling port 2. After the lubricating oil enters the oil groove 3, it can lubricate the ball 4 and the raceway 10 during the operation of the bearing to reduce friction and wear. The isolation block 11 separates the ball 4 on both sides to make the movement of the ball 4 more stable and orderly. The reinforced protection structure 6 on the inner wall of the inner ring 5 provides additional strength and protection for the inner ring 5. The thread 8 on the inner wall is used to connect with other components. The hard coating 12 on the outer wall of the raceway 10 can improve the wear resistance and corrosion resistance of the raceway 10. The reinforcement layer 601 is tightly mounted on the inner wall of the inner ring 5, which can increase the structural strength of the inner ring 5 and withstand greater loads and impact forces. The reinforcement layer 602 is mounted on the inner wall of the reinforcement layer 601 to further improve the overall strength and stability of the inner ring 5. The thread 8 is arranged on the inner wall of the reinforcement layer 602 to facilitate connection and fixation with other components.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A precision spherical roller bearing, comprising an outer ring (1), characterized in that: An oil passage (9) is provided at the center of the outer wall of the outer ring (1), and the outer wall of the oil passage (9) is provided with three oil filling ports (2) arranged in a ring shape. An oil groove (3) is provided at the center of the inner wall of the outer ring (1). An inner ring (5) is provided inside the outer ring (1), and an isolation block (11) is provided at the center of the outer wall of the inner ring (5). The inner wall of the outer ring (1) and the outer wall of the inner ring (5) are both provided with raceways (10), and the outer walls of the two raceways (10) are both provided with a hard coating (12). A plurality of balls (4) are arranged in a ring shape inside the two raceways (10) on both sides of the isolation block (11), and the inner wall of the inner ring (5) is provided with a reinforced protection structure (6), and the inner wall of the reinforced protection structure (6) is provided with a thread (8).

2. A precision spherical roller bearing according to claim 1, characterized in that: The reinforced protection structure (6) comprises a reinforcement layer (601) and a reinforcement layer (602), wherein the reinforcement layer (601) is sleeved on the inner wall of the inner ring (5), the reinforcement layer (602) is sleeved on the inner wall of the reinforcement layer (601), and the thread (8) is arranged on the inner wall of the reinforcement layer (602).

3. A precision spherical roller bearing according to claim 2, characterized in that: The reinforcement layer (601) is made of aluminum alloy.

4. A precision spherical roller bearing according to claim 2, characterized in that: The reinforcement layer (602) is made of carbon fiber reinforced plastic.

5. The precision spherical roller bearing according to claim 1, characterized in that: The plurality of balls (4) are rotatably connected to the inner center of the raceway (10) on both sides.

6. The precision spherical roller bearing according to claim 1, characterized in that: The hard coating (12) is made of a ceramic coating.

7. The precision spherical roller bearing according to claim 1, characterized in that: A protective cover (7) is provided between the inner ring (5) and the outer ring (1) on both side walls of the plurality of balls (4).

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