Ball bearing structure

Abstract

The utility model provides a ball bearing structure which comprises a bearing main body sleeved on a shaft body in an interference manner, an annular base is arranged on the axial end face of the bearing main body, and at least one axial threaded hole is formed in the axial end face, far away from the bearing main body, of the annular base; the axial threaded hole is used for being in threaded connection with a screw, and axial force is exerted by screwing in the screw so that the bearing body can be detached from the shaft body. According to the utility model, by optimizing the structure of the bearing, the core problems that the traditional ball bearing is difficult to disassemble and the shaft body and the bearing are easy to damage are solved, and the equipment maintenance efficiency is obviously improved and the maintenance cost is reduced while the bearing capacity and the rotating precision are ensured.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and more specifically, to a ball bearing structure. Background Technology

[0002] In the field of modern mechanical transmission, ball bearings are widely used in key components such as automotive engines, industrial automation equipment, and aerospace machinery due to their excellent load-bearing capacity and rotational accuracy. When a ball bearing is fitted onto a shaft with an interference fit, the two form a stable mechanical connection that can effectively support radial loads. However, during equipment maintenance, repair, or component replacement, bearing disassembly becomes a critical step that restricts work efficiency and equipment reliability.

[0003] Currently, traditional methods for disassembling ball bearings mainly rely on specialized tools such as pullers and hydraulic disassemblies. These tools forcibly separate the bearing from the shaft by applying tension or pressure, requiring operators with high levels of professional skills and experience, and the disassembly process is cumbersome. During disassembly, uneven force and poor tool size compatibility can easily cause scratches and deformation on the shaft surface, or lead to bearing ball breakage and inner ring damage, thus affecting the shaft's fitting accuracy and the bearing's reusability. Furthermore, the complex disassembly procedure often consumes significant time and labor costs, severely reducing equipment maintenance efficiency and increasing downtime losses, especially in scenarios with extremely high requirements for continuous equipment operation, such as assembly line production. In addition, specialized disassembly tools are usually large and inconvenient to carry, and multiple models are needed for different bearing and shaft specifications, further increasing equipment maintenance costs. Utility Model Content

[0004] The purpose of this application is to provide a ball bearing structure that has the advantages of simplifying the disassembly process, improving disassembly efficiency, and reducing damage to the shaft and bearing.

[0005] This application provides a ball bearing structure, including a bearing body for interference fitting onto a shaft, an annular base on the axial end face of the bearing body, and at least one axial threaded hole on the axial end face of the annular base away from the bearing body; the axial threaded hole is used for screw thread connection, and axial force is applied by screwing in the screw to disassemble the bearing body from the shaft.

[0006] Compared with existing technologies, the ball bearing structure disclosed in this application has the following advantages: By setting an annular base on the axial end face of the bearing body and opening an axial threaded hole in the annular base, the bearing body is disassembled by applying axial force through a screw thread connection. Compared with traditional disassembly methods using specialized tools such as pullers and hydraulic disassemblies, no highly skilled or experienced operators are required, making the disassembly process much simpler. It avoids problems such as scratches and deformation of the shaft surface, as well as bearing ball breakage and inner ring damage caused by uneven force and poor dimensional fit due to the use of specialized tools. This ensures the fitting accuracy of the shaft and the reusability of the bearing, while saving time and labor costs and improving equipment maintenance efficiency.

[0007] In one possible implementation, the annular base is integrally formed with the inner ring of the bearing body. Compared with the prior art, the integral forming of the annular base and the inner ring of the bearing body enhances the connection strength between the annular base and the bearing body, making the overall structure more stable and reliable. During use, it can better withstand the action of various forces, reduce the risk of failure due to loose structural connections, and extend the service life of the ball bearing structure.

[0008] In one possible implementation, there are multiple axial threaded holes, evenly spaced around the annular base. Compared to existing technologies, the evenly spaced axial threaded holes around the annular base allow for the simultaneous application of axial force through multiple screws during bearing body disassembly, resulting in more uniform stress distribution on the bearing body. Compared to single or unevenly distributed axial threaded holes, this method more effectively avoids damage to the shaft or bearing caused by excessive localized stress, further improving the safety and reliability of disassembly.

[0009] In one possible implementation, the outer ring wall of the annular base is provided with a sealing ring groove for inserting a sealing ring. Compared with the prior art, the sealing ring groove on the outer ring wall of the annular base effectively prevents external dust, impurities, and other foreign objects from entering the bearing, avoiding wear and corrosion of the bearing's balls, raceways, and other components. This ensures the normal operation and service life of the bearing and improves the sealing performance of the ball bearing structure.

[0010] In one possible implementation, the annular base is provided with a radially inwardly extending limiting step, the end face of which abuts against the end of the shaft to limit axial displacement of the shaft. Compared with the prior art, the radially inwardly extending limiting step on the annular base, with its end face abutting against the end of the shaft to limit axial displacement, provides reliable axial positioning for the shaft and enhances the stability of the entire mechanical transmission system. During equipment operation, it effectively prevents unnecessary axial movement of the shaft, ensuring the operating accuracy and reliability of the equipment.

[0011] In one possible implementation, the axial threaded hole is a blind hole. Compared with the prior art, the blind hole prevents foreign objects from penetrating through the axial threaded hole and entering the bearing during use, thus avoiding interference with the normal operation of the bearing. Moreover, the blind hole structure increases the strength of the axial threaded hole to a certain extent, improves the reliability of the threaded connection, and ensures the smooth operation of disassembling the bearing body using screws. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of this application. Figure 2 ;

[0014] Figure 3 This is a schematic diagram showing the connection between the bearing shaft and the shaft.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Bearing body; 11. Inner ring; 2. Annular base; 21. Axial threaded hole; 22. Sealing ring groove; 23. Limiting step; 10. Shaft. Detailed Implementation

[0017] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0018] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] See Figures 1 to 3 This application discloses a ball bearing structure, including a bearing body 1 for interference fitting onto a shaft 10. An annular base 2 is provided on the axial end face of the bearing body 1. At least one axial threaded hole 21 is provided on the axial end face of the annular base 2 away from the bearing body 1. The axial threaded hole 21 is used for screw thread connection. By screwing in the screw, an axial force is applied to disassemble the bearing body 1 from the shaft 10.

[0022] Specifically, the bearing body 1 is securely connected to the shaft 10 via an interference fit, effectively supporting radial loads. The annular base 2 is located on the axial end face of the bearing body 1, and an axial threaded hole 21 is provided on the end face away from the bearing body 1 for screws to be screwed in. After the screws are screwed in, the bearing body 1 can be disassembled from the shaft 10 by applying axial force. The number of axial threaded holes 21 can be adjusted according to actual needs, for example, eight axial threaded holes 21 can be provided to provide sufficient disassembly force. The positions of the axial threaded holes 21 are evenly distributed around the circumference of the annular base 2 to ensure uniform force during disassembly and avoid damage to the shaft 10 or the bearing. The annular base 2 is integrally formed with the inner ring 11 of the bearing body 1 to improve the integrity and strength of the structure, for example, by integral casting of high-strength alloy steel.

[0023] In this embodiment, a sealing ring groove 22 is provided on the outer ring wall of the annular base 2, which is used for inserting a sealing ring. The cross-section of the sealing ring groove 22 can be rectangular or arc-shaped, and the specific shape is selected according to the design requirements of the sealing ring. As a preferred embodiment, the depth and width of the sealing ring groove 22 should match the size of the sealing ring to ensure that the sealing ring can be securely embedded in the groove, thereby achieving an effective sealing effect. Therefore, the sealing ring groove 22 allows the bearing body 1 to be isolated from the external environment after installation through the sealing ring, preventing dust and other impurities from entering the bearing, thereby extending the bearing's service life.

[0024] In this embodiment, the annular base 2 is provided with a radially inwardly extending limiting step 23. The end face of the limiting step 23 is used to abut against the end of the shaft 10 to limit the axial displacement of the shaft 10. The design of the limiting step 23 can effectively prevent the shaft 10 from displacing in the axial direction, thereby ensuring a stable connection between the bearing and the shaft 10. Specifically, the radially inwardly extending structure of the limiting step 23 allows its end face to directly contact the end of the shaft 10. Through this contact, the axial displacement of the shaft 10 is limited to a controllable range, restricting the displacement of the shaft 10 in the axial direction, thereby avoiding loosening or failure between the bearing and the shaft 10 due to the displacement of the shaft 10.

[0025] In this embodiment, the axial threaded hole 21 is a blind hole. The depth of the blind hole is not less than the effective depth required for the screw to be screwed in, so as to prevent the screw from passing through the axial threaded hole 21 when it is unscrewed and affecting the disassembly operation; the design of the blind hole allows the screw to apply sufficient axial force when screwed in, thereby removing the bearing body 1 from the shaft 10; at the same time, the blind hole can prevent foreign objects from entering the bearing.

[0026] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0027] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A ball bearing structure, comprising a bearing body for interference fitting onto a shaft, characterized in that, The bearing body is provided with an annular base on its axial end face, and at least one axial threaded hole is provided on the axial end face of the annular base away from the bearing body; the axial threaded hole is used for screw thread connection, and the bearing body is disassembled from the shaft by screwing in the screw and applying axial force.

2. The ball bearing structure according to claim 1, characterized in that, The annular base is integrally formed with the inner ring of the bearing body.

3. The ball bearing structure according to claim 1, characterized in that, There are multiple axial threaded holes, which are evenly spaced around the circumference of the annular base.

4. The ball bearing structure according to claim 1, characterized in that, The outer ring wall of the annular base is provided with a sealing ring groove, which is used for inserting a sealing ring.

5. The ball bearing structure according to claim 1, characterized in that, The annular base is provided with a radially inwardly extending limiting step, the end face of which is used to abut against the end of the shaft to limit the axial displacement of the shaft.

6. The ball bearing structure according to claim 1, characterized in that, The axial threaded hole is a blind hole.

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