Novel wear-resistant bearing

Abstract

The utility model discloses a novel wear-resistant bearing, which comprises a bearing outer ring, a bearing inner ring, a metal sealing ring and symmetrically arranged retainers, the two sides of the bearing outer ring are symmetrically provided with mounting grooves, the inner walls of the mounting grooves are provided with threaded grooves, the two sides of a ball groove on the outer surface of the bearing inner ring are symmetrically provided with annular sealing grooves, and the annular sealing grooves are communicated with the threaded grooves. A plurality of ball racks are arranged on the retainer, a plurality of grooves are formed in the inner walls of the ball racks, a metal connecting ring is fixedly arranged on the inner surface of the sealing ring, an arc-shaped groove is formed in the outer surface of the connecting ring, and a rubber ring is fixedly arranged in the arc-shaped groove. According to the utility model, the plurality of grooves are formed in the inner wall of the ball rack, so that the contact area between the ball rack and the ball body can be reduced, lubricating grease can enter the grooves, and the ball body can be better lubricated, thereby reducing the abrasion between the ball body and the bearing outer ring as well as between the ball body and the bearing inner ring, and prolonging the service life of the bearing.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and particularly relates to a new type of wear-resistant bearing. Background Art

[0002] A bearing is a mechanical component used to support a rotating shaft, reduce friction and wear, and improve mechanical efficiency. They are usually made of metal or plastic and are divided into an inner ring, an outer ring, and rolling elements. The rolling elements roll between the inner and outer rings, which can reduce friction and wear while bearing loads. There are many types of bearings, which can be divided into various types according to their structures and application scenarios, such as deep groove ball bearings, cylindrical roller bearings, tapered roller bearings, angular contact bearings, thrust bearings, etc. In various machines, bearings are widely used in various rotating mechanisms, such as motors, pumps, compressors, gearboxes, etc. By using bearings, the reliability, stability, and mechanical efficiency of the machine can be improved.

[0003] In the prior art, as disclosed in Chinese Patent Publication No.: CN212003940U, a wear-resistant bearing includes an outer ring, an inner ring, a plurality of ball bearings, and a cage for fixing the plurality of ball bearings. A plurality of mounting holes are formed in the cage, and the number of the mounting holes is the same as the number of the ball bearings. Rolling grooves for embedding the ball bearings are formed on the inner side walls of the outer ring and the inner ring. Wear-resistant layers are provided between the rolling grooves of the outer ring and the ball bearings and between the rolling grooves of the inner ring and the ball bearings. The cage is split and consists of a first cage and a second cage that are cooperatively connected. A locking device for locking or separating the first cage and the second cage is provided on the first cage, and a mounting groove for the locking device to extend into and be fixedly installed is formed on the second cage.

[0004] During the operation of the bearing, the wear between the ball and the cage is an important problem. If the contact area between the cage and the surface of the ball is too large and the lubrication is poor, it will lead to an increase in the frictional torque and accelerate the wear of the cage. In the above wear-resistant bearing, the cage adopts the ordinary cage structure in the prior art, and the friction with the surface of the ball is large, which will reduce the service life. Summary of the Utility Model

[0005] In order to overcome the deficiency of the large friction between the cage and the ball in the prior art, the utility model provides a new type of wear-resistant bearing.

[0006] In order to achieve the above object, the utility model provides the following technical solution: A new type of wear-resistant bearing includes a bearing outer ring, a bearing inner ring, a metal seal ring, and symmetrically arranged cages.

[0007] Mounting grooves are symmetrically formed on both sides of the bearing outer ring, and threaded grooves are formed on the inner walls of the mounting grooves.

[0008] Annular sealing grooves are symmetrically formed on both sides of the raceway on the outer surface of the inner ring of the bearing.

[0009] A number of ball holders are arranged on the cage, and a number of grooves are formed on the inner wall of the ball holder.

[0010] A metal connecting ring is fixedly arranged on the inner surface of the sealing ring. An arc-shaped groove is formed on the outer surface of the connecting ring, and a rubber ring is fixedly arranged in the arc-shaped groove.

[0011] Optionally, a number of balls are installed between the raceways of the outer ring and the inner ring of the bearing, and the shapes and numbers of the ball holders correspond to those of the balls.

[0012] Optionally, a number of through holes are annularly formed on the surface of the cage.

[0013] Optionally, the sealing ring is in threaded fit with the installation groove.

[0014] Optionally, the size of the rubber ring corresponds to that of the sealing groove.

[0015] Optionally, the inner diameter of the sealing ring is larger than the outer wall diameter of the inner ring of the bearing.

[0016] In summary, compared with the prior art, a novel wear-resistant bearing provided by the present utility model has the following beneficial effects:

[0017] 1. In the present utility model, through a number of grooves formed on the inner wall of the ball holder, the contact area between the ball holder and the ball can be reduced, and at the same time, grease can enter the grooves, so as to better lubricate the ball, thereby reducing the wear between the ball and the outer ring and the inner ring of the bearing and prolonging the service life of the bearing;

[0018] 2. In the present utility model, in order to facilitate the installation of the sealing ring to the outside of the outer ring of the bearing, screwing grooves are symmetrically formed on the outer surface of the sealing ring, and corresponding tools can be used to screw the sealing ring so that it is installed in the installation groove. This method is convenient for replacing the sealing ring and the inner cage and is convenient for the maintenance of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded view of the components in the present utility model;

[0020] Figure 2 is in the present utility model Figure 1 of the cross-sectional view;

[0021] Figure 3 is in the present utility model Figure 2 of the enlarged detail view at A;

[0022] Figure 4 is in the present utility model Figure 2Enlarged view of the details at position B;

[0023] Figure 5 Cross-sectional view of the present utility model;

[0024] Figure 6 The present utility model Figure 5 Enlarged view of the details at position C;

[0025] Figure 7 Overall structural schematic diagram of the present utility model;

[0026] In the figure: 1. Outer ring of the bearing; 11. Installation groove; 2. Inner ring of the bearing; 21. Sealing groove; 3. Sealing ring; 31. Turning groove; 32. Connecting ring; 321. Rubber ring; 4. Cage; 41. Through hole; 42. Ball holder; 43. Groove; 44. Bolt; 45. Nut; 5. Sphere. Specific implementation manner

[0027] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0028] Refer to Figure 1-2 , A new type of wear-resistant bearing, including an outer ring 1 of the bearing and an inner ring 2 of the bearing. A number of rolling spheres 5 are installed in the raceways of the inner ring 2 of the bearing and the outer ring 1 of the bearing. A cage 4 is symmetrically installed on the outer sides of the rolling spheres 5. The cage 4 is used to stabilize the spheres 5. Metal sealing rings 3 are symmetrically installed on both sides of the outer ring 1 of the bearing. The sealing rings 3 are used to prevent the leakage of the grease between the outer ring 1 of the bearing and the inner ring 2 of the bearing, and at the same time to prevent foreign dust and debris from entering.

[0029] Refer to Figure 1-2 , The cage 4 is provided with ball holders 42 corresponding to the number and shape of the spheres 5, and a number of grooves 43 are opened on the inner walls of the ball holders 42. The grooves 43 can reduce the contact area between the ball holders 42 and the spheres 5, and at the same time enable the grease to enter the grooves 43, so as to better lubricate the spheres 5, thereby reducing the wear between the spheres 5 and the outer ring 1 of the bearing and the inner ring 2 of the bearing.

[0030] Refer to Figure 1-2 , A number of through holes 41 are annularly formed on the surface of the cage 4. After combining the two cages 4, the bolts 44 can pass through the through holes 41 and be connected to the nuts 45, so that the two cages 4 limit the spheres 5.

[0031] Specifically, after the sphere 5 is sequentially placed into the bearing outer ring 1 and the bearing inner ring 2, the cage 4 on both sides is combined together so that the ball holder 42 corresponds to the sphere 5, and then the two cages 4 are fixed using bolts 44 and nuts 45. This connection method can facilitate the disassembly of the cage 4, thus facilitating replacement and repair.

[0032] Reference Figure 3-4 , on both sides of the bearing outer ring 1, mounting grooves 11 for installing the sealing ring 3 are symmetrically provided, and threaded grooves are provided on the inner wall of the mounting grooves 11 for threaded connection with the sealing ring 3.

[0033] Reference Figure 3-4 , in order to facilitate the installation of the sealing ring 3 to the outside of the bearing outer ring 1, screwing grooves 31 are symmetrically provided on the outer surface of the sealing ring 3, and corresponding tools can be used to screw the sealing ring 3 so that it is installed into the mounting groove 11.

[0034] Reference Figure 4 , a metal connection ring 32 is fixedly provided on the inner surface of the sealing ring 3. An arc-shaped groove is provided on the outer surface of the connection ring 32, and a rubber ring 321 is fixedly provided in the arc-shaped groove.

[0035] Reference Figure 5-6 , annular sealing grooves 21 are symmetrically provided on both sides of the raceway on the outer surface of the bearing inner ring 2. The size of the rubber ring 321 corresponds to that of the sealing groove 21. After the sealing ring 3 is installed, the rubber ring 321 will enter the sealing ring 3 to effectively seal the grease inside the bearing, effectively reducing the internal wear of the bearing.

[0036] Specifically, the inner diameter of the inner ring of the sealing ring 3 is larger than the outer wall diameter of the bearing inner ring 2. After the sealing ring 3 is screwed into the mounting groove 11, there will be a gap between the inner wall of the sealing ring 3 and the outer wall of the bearing inner ring 2. This gap is to prevent the metal sealing ring 3 from coming into contact with the outer wall of the bearing inner ring 2 during rotation, affecting the rotation of the bearing inner ring 2. At the same time, it can also facilitate the rubber ring 321 to enter the sealing groove 21, and grease has been applied to the surface of the rubber ring 321 before the rubber ring 321 enters the sealing groove 21 to reduce the influence of the rotation of the bearing inner ring 2 on the rubber ring 321.

[0037] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but rather use the difference in functions of the components as the criterion for distinction. As used throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0038] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent in such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the said element.

[0039] The above description shows and describes several preferred embodiments of the present application. However, as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present application should fall within the protection scope of the appended claims of the present application.

Claims

1. A new type of wear-resistant bearing, characterized in that, It includes an outer bearing ring (1), an inner bearing ring (2), a metal sealing ring (3), and symmetrically arranged cages (4). On both sides of the outer bearing ring (1), mounting grooves (11) are symmetrically provided, and threaded grooves are provided on the inner walls of the mounting grooves (11). On both sides of the raceway on the outer surface of the inner bearing ring (2), annular sealing grooves (21) are symmetrically provided. A number of ball holders (42) are provided on the cage (4), and a number of grooves (43) are provided on the inner walls of the ball holders (42). On the inner surface of the sealing ring (3), a metal connecting ring (32) is fixedly provided. An arc-shaped groove is provided on the outer surface of the connecting ring (32), and a rubber ring (321) is fixedly provided in the arc-shaped groove.

2. A novel wear-resistant bearing according to claim 1, characterized in that, A number of balls (5) are installed between the raceways of the outer bearing ring (1) and the inner bearing ring (2). The shapes and numbers of the ball holders (42) correspond to those of the balls (5).

3. A novel wear-resistant bearing according to claim 1, characterized in that, A number of through holes (41) are annularly provided on the surface of the cage (4).

4. A novel wear-resistant bearing according to claim 1, characterized in that, The sealing ring (3) is in threaded fit with the mounting groove (11).

5. A novel wear-resistant bearing according to claim 1, characterized in that, The size of the rubber ring (321) corresponds to that of the sealing groove (21).

6. A novel wear-resistant bearing according to claim 1, characterized in that, The inner diameter of the sealing ring (3) is larger than the outer wall diameter of the inner bearing ring (2).

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