Bearing with good sealing performance

Abstract

The utility model relates to the technical field of bearings, and discloses a bearing with good sealing performance, which comprises an inner ring, an outer ring, two sealing covers, two ball retainers and a plurality of balls, the outer ring is arranged on the outer side of the inner ring, and the balls are arranged between the inner ring and the outer ring. The two ball retainers are arranged at the upper ends and the lower ends of the multiple balls correspondingly, and the two sealing covers are arranged at the upper ends of the ball retainers close to the upper portion and the lower ends of the ball retainers close to the lower portion correspondingly. And extending seats are arranged at the lower part of the outer side wall of the sealing cover close to the upper part, the lower part of the inner side wall of the sealing cover close to the upper part, the upper part of the outer side wall of the sealing cover close to the lower part and the upper part of the inner side wall of the sealing cover close to the lower part. According to the utility model, the four adsorption structures enable the four extension seats on one sides of the two sealing covers to be tightly attached to the interior of the storage groove, so that the sealing performance is improved, the friction is reduced, the service life is prolonged, the limiting strips are plugged into the limiting grooves, and the friction force between the limiting strips and connecting pieces is conveniently improved during connection.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a bearing with good sealing performance. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. Existing bearings are generally composed of an outer ring, a sealing ring, and an inner ring.

[0003] Existing bearing seals are generally divided into two types: contact and non-contact. During use, contact seals can easily reduce the rotational speed of the bearing and easily cause wear of the seals. Therefore, those skilled in the art provide a bearing with good sealing performance 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 of the prior art and to propose a bearing with good sealing performance. Four dynamic magnetic sealing rings are attracted by four static magnetic sealing rings, so that the four self-lubricating layers on the outside of the two sealing covers made of rubber are respectively attached to the outside of the four static magnetic sealing rings. When the inner ring and the outer ring rotate relative to each other, the four self-lubricating layers generate an oil film through friction, which improves the sealing performance while reducing wear and increasing the service life.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bearing with good sealing performance, comprising an inner ring, an outer ring, two sealing covers, two ball retainers and a plurality of balls, wherein the outer ring is arranged on the outside of the inner ring, the plurality of balls are arranged between the inner ring and the outer ring, the two ball retainers are respectively arranged at the upper and lower ends of the plurality of balls, the two sealing covers are respectively arranged at the upper end of the upper ball retainer and the lower end of the lower ball retainer, the outer side wall of the upper sealing cover is at the lower end, the inner side wall of the upper sealing cover is at the lower end, An extension seat is provided at the upper part of the outer wall of the lower sealing cover and at the upper part of the inner wall of the lower sealing cover, and an adsorption structure is provided at the upper ends of the two extension seats at the upper part and the lower ends of the two extension seats at the lower part. A limiting groove is provided at the upper part of the center of the rear inner wall of the inner ring and the upper part of the center of the front end surface of the outer ring, and a limiting strip is provided inside the two limiting grooves. Two grooves are arranged laterally at both sides of the upper end surface of the sealing cover at the upper part and at both sides of the lower end surface of the sealing cover at the lower part, and storage grooves are provided at the upper and lower ends of the outer wall of the inner ring and the upper and lower ends of the inner wall of the outer ring;

[0006] Through the above technical solution, the four extension seats on one side of the two sealing covers are pressed against the inside of the storage tank through four adsorption structures, which improves the sealing while reducing friction and prolongs the service life. The limiting strips are then inserted into the limiting grooves to increase the friction between the connecting parts during connection. The two sealing covers are then easily removed through the eight grooves, which facilitates later disassembly, maintenance and installation.

[0007] Furthermore, the adsorption structure includes a dynamic magnetic sealing ring, a self-lubricating layer and a static magnetic sealing ring, wherein the dynamic magnetic sealing ring is arranged on the end surface of the extension seat, the self-lubricating layer is arranged on one end surface of the dynamic magnetic sealing ring, and the static magnetic sealing ring is arranged inside the storage tank;

[0008] Through the above technical solution, when the self-lubricating layer and the static magnetic sealing ring rotate against each other and friction occurs, an oil film appears on the surface of the self-lubricating layer. When the passive magnetic sealing ring presses the self-lubricating layer against the static magnetic sealing ring to improve the sealing performance, the friction is reduced, thereby reducing wear.

[0009] Furthermore, the dynamic magnetic sealing ring and the static magnetic sealing ring are magnetically attracted to each other;

[0010] The above technical solution facilitates magnetic adsorption when the inner ring and the outer ring rotate, thereby improving the sealing performance.

[0011] Furthermore, the end surfaces of the two limiting strips away from the two limiting grooves are both provided with inclined surfaces;

[0012] The above technical solution makes it convenient to connect with parts by fitting the two inclined surfaces on the parts, thereby increasing the friction between the parts and the stability of the equipment installation.

[0013] Furthermore, the two sealing covers are made of rubber;

[0014] Through the above technical solution, the two rubber sealing covers are more flexible and convenient for disassembly and assembly. The adsorption structure has a certain adsorption force, which can also prevent the rubber sealing covers from bending and affecting the sealing.

[0015] Furthermore, the material of the self-lubricating layer is a polymer-based self-lubricating composite material;

[0016] Through the above technical solution, the polymer-based self-lubricating composite material has a certain flexibility, which is convenient for installation, disassembly and maintenance.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the present invention, the four dynamic magnetic sealing rings of the bearing with good sealing performance are attracted by the four static magnetic sealing rings, so that the four self-lubricating layers on the outside of the two rubber sealing covers are respectively attached to the outside of the four static magnetic sealing rings. When the inner ring and the outer ring rotate relative to each other, the four self-lubricating layers produce an oil film through friction, which improves the sealing performance while reducing wear and extending the service life.

[0019] 2. In the present invention, during installation, by inserting the two limit strips into the two limit grooves, the friction between the inner wall of the inner ring and the outer wall of the outer ring and the connecting piece can be increased. Limit grooves can also be opened on the connecting piece for installation to ensure the stability of the installation.

[0020] 3. In the present invention, during installation, the outer and inner extension seats of the two rubber sealing covers are respectively inserted into the four storage slots, and a screwdriver or a pointed object is inserted into the four grooves and pushed inward. The two rubber sealing covers are bent inward, making it convenient to take out the two sealing covers for maintenance and also convenient for later installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of a bearing with good sealing performance proposed by the utility model;

[0022] Figure 2 This is a three-dimensional cross-sectional view of a bearing with good sealing performance proposed by the utility model;

[0023] Figure 3 for Figure 1 A magnified schematic diagram of point A in the middle;

[0024] Figure 4 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0025] Legend:

[0026] 1. Inner ring; 2. Sealing cover; 3. Limiting strip; 4. Outer ring; 5. Sphere; 6. Adsorption structure; 601. Dynamic magnetic sealing ring; 602. Self-lubricating layer; 603. Static magnetic sealing ring; 7. Ball cage; 8. Limiting groove; 9. Storage groove; 10. Groove; 11. Extension seat. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Reference Figure 1-4 The utility model provides an embodiment of a bearing with good sealing performance, comprising an inner ring 1, an outer ring 4, two sealing covers 2, two ball retainers 7 and a plurality of balls 5. The outer ring 4 is arranged on the outside of the inner ring 1, and the plurality of balls 5 are arranged between the inner ring 1 and the outer ring 4. The two ball retainers 7 are respectively arranged at the upper and lower ends of the plurality of balls 5. The two sealing covers 2 are respectively arranged at the upper end of the upper ball retainer 7 and the lower end of the lower ball retainer 7. An extension seat 11 is provided at the lower part of the outer wall of the upper sealing cover 2, the lower part of the inner wall of the upper sealing cover 2, the upper part of the outer wall of the lower sealing cover 2 and the upper part of the inner wall of the lower sealing cover 2. The upper ends of the two upper extension seats 11 and the lower ends of the two lower extension seats 11 are both provided with an adsorption structure. 6. A limiting groove 8 is provided at the upper center of the rear inner wall of the inner ring 1 and the upper center of the front end face of the outer ring 4. A limiting strip 3 is provided inside the two limiting grooves 8, and the limiting strip 3 is inserted into the limiting groove 8 to increase the friction between the connecting parts during connection. Two grooves 10 are arranged horizontally on both sides of the upper end face of the upper sealing cover 2 and on both sides of the lower end face of the lower sealing cover 2. The eight grooves 10 are used to facilitate the removal of the two sealing covers 2, which is convenient for later disassembly, maintenance and installation. Storage grooves 9 are provided at the upper and lower ends of the outer wall of the inner ring 1 and the upper and lower ends of the inner wall of the outer ring 4. The four extension seats 11 on one side of the two sealing covers 2 are pressed against the inside of the storage groove 9 through four adsorption structures 6, which is convenient for improving the sealing while reducing friction and increasing the service life.

[0029] The adsorption structure 6 includes a dynamic magnetic sealing ring 601, a self-lubricating layer 602 and a static magnetic sealing ring 603. The dynamic magnetic sealing ring 601 is arranged on the end face of the extension seat 11, the self-lubricating layer 602 is arranged on one end face of the dynamic magnetic sealing ring 601, and the static magnetic sealing ring 603 is arranged inside the storage tank 9. When the self-lubricating layer 602 and the static magnetic sealing ring 603 rotate with each other and friction occurs, an oil film appears on the surface of the self-lubricating layer 602. When the dynamic magnetic sealing ring 601 presses the self-lubricating layer 602 against the static magnetic sealing ring 603 to improve the sealing performance, the friction force is reduced and the wear is reduced. The dynamic magnetic sealing ring 601 and the static magnetic sealing ring 603 are magnetically adsorbed to each other, which is convenient for magnetic adsorption when the inner ring 1 and the outer ring 4 rotate, thereby improving the sealing performance. The material of the self-lubricating layer 602 is a polymer-based self-lubricating composite material. The polymer-based self-lubricating composite material has a certain flexibility and is convenient for installation, disassembly and maintenance.

[0030] The two limiting strips 3 are provided with inclined surfaces on one end surface away from the two limiting grooves 8, which makes it convenient to fit on the components through the two inclined surfaces when connecting with the components, thereby increasing the friction between the components and the stability of the equipment installation. The two sealing covers 2 are made of rubber. The two rubber sealing covers 2 are more flexible and convenient for disassembly and assembly. The adsorption structure 6 has a certain adsorption force, which can also prevent the rubber sealing cover 2 from bending and affecting the sealing.

[0031] Working principle: When in use, the outer side and inner extension seat 11 of the two rubber sealing covers 2 are respectively inserted into the four storage grooves 9, and the four dynamic magnetic sealing rings 601 are attracted by the four static magnetic sealing rings 603, so that the four self-lubricating layers 602 on the outer side of the two rubber sealing covers 2 are respectively attached to the outer side of the four static magnetic sealing rings 603. When the inner ring 1 and the outer ring 4 rotate relative to each other, the four self-lubricating layers 602 generate an oil film through friction, which improves the sealing while reducing wear and increasing the service life. When installing, the two limit strips 3 are inserted into the two limit grooves 8 to facilitate the increase of the friction between the inner wall of the inner ring 1 and the outer wall of the outer ring 4 and the connecting part. The limit groove 8 can also be opened on the connecting part for installation, and then a screwdriver or a pointed object is used to insert it into the four grooves 10 and push it inward. The two rubber sealing covers 2 are bent inward, which is convenient for removing the two sealing covers 2 and also convenient for later installation.

[0032] 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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bearing with good sealing performance, comprising an inner ring (1), an outer ring (4), two sealing covers (2), two ball retainers (7) and a plurality of balls (5), wherein the outer ring (4) is arranged outside the inner ring (1), the plurality of balls (5) are arranged between the inner ring (1) and the outer ring (4), the two ball retainers (7) are respectively arranged at the upper and lower ends of the plurality of balls (5), and the two sealing covers (2) are respectively arranged at the upper end of the upper ball retainer (7) and the lower end of the lower ball retainer (7), characterized in that: Extension seats (11) are provided at the lower part of the outer wall of the upper sealing cover (2), the lower part of the inner wall of the upper sealing cover (2), the upper part of the outer wall of the lower sealing cover (2) and the upper part of the inner wall of the lower sealing cover (2). Adsorption structures (6) are provided at the upper ends of the two extension seats (11) at the upper part and the lower ends of the two extension seats (11) at the lower part. Limiting grooves (8) are provided at the upper part of the center of the rear inner wall of the inner ring (1) and the upper part of the center of the front end face of the outer ring (4). Limiting strips (3) are provided inside the two limiting grooves (8). Two grooves (10) are arranged transversely at both sides of the upper end face of the upper sealing cover (2) and at both sides of the lower end face of the lower sealing cover (2). Storage grooves (9) are provided at the upper and lower ends of the outer wall of the inner ring (1) and the upper and lower ends of the inner wall of the outer ring (4).

2. A bearing with good sealing performance according to claim 1, characterized in that: The adsorption structure (6) comprises a dynamic magnetic sealing ring (601), a self-lubricating layer (602) and a static magnetic sealing ring (603); the dynamic magnetic sealing ring (601) is arranged on the end face of the extension seat (11); the self-lubricating layer (602) is arranged on one end face of the dynamic magnetic sealing ring (601); and the static magnetic sealing ring (603) is arranged inside the storage tank (9).

3. A bearing with good sealing performance according to claim 2, characterized in that: The dynamic magnetic sealing ring (601) and the static magnetic sealing ring (603) are magnetically attracted to each other.

4. A bearing with good sealing performance according to claim 1, characterized in that: The end surfaces of the two limiting strips (3) away from the two limiting grooves (8) are both provided with inclined surfaces.

5. The bearing with good sealing performance according to claim 1, characterized in that: The two sealing covers (2) are both made of rubber.

6. A bearing with good sealing performance according to claim 2, characterized in that: The material of the self-lubricating layer (602) is a polymer-based self-lubricating composite material.

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