A bearing structure that is easy to install and remove and allows for adjustment of axial movement and radial clearance.

Abstract

This invention provides a bearing structure that facilitates installation and removal and allows for adjustment of axial movement and radial clearance. It includes an outer ring assembly and an inner ring assembly, with the inner ring assembly located inside the outer ring assembly. A roller assembly is located between the inner and outer ring assemblies, and the inner bore of the inner ring assembly has a conical surface. A double-semi-locking bushing is also included, located inside the inner ring assembly, with its outer surface also having a conical surface and abutting against the inner surface of the inner ring assembly. A locking nut is fitted onto the outer side of the end of the double-semi-locking bushing. By employing a double-semi-locking bushing, this invention facilitates bearing installation into the crankshaft diameter. Furthermore, during the tightening of the locking nut, the double-semi-locking bushing moves axially relative to the conical surface of the inner bore of the inner ring assembly, effectively adjusting the bearing's radial clearance and axial movement to meet operational requirements and lifespan expectations.

Description

Technical Field

[0001] This utility model relates to the field of bearing design technology, and in particular to a bearing structure that is easy to install and remove and allows for adjustment of axial movement and radial clearance. Background Technology

[0002] The radial clearance and axial runout of conventional single-row cylindrical roller bearings are determined by design and cannot be adjusted according to operating conditions, resulting in a significant reduction in bearing life. When the bearing is used in the crankshaft bore, it is difficult to install due to the limitations of the crankshaft structure.

[0003] Furthermore, due to their structural design, traditional single-row cylindrical roller bearings often have double flanges on the outer or inner ring, making the raceway difficult to machine and limiting machining accuracy. Additionally, except for flangeless or single-flange rings, the outer ring, inner ring, and roller assemblies cannot be directly disassembled axially. This leads to inconvenience in later bearing maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a bearing structure that is easy to install and remove and allows for adjustment of axial movement and radial clearance. By adjusting the axial movement and radial clearance of the bearing, under the premise of meeting the working conditions, the bearing can be subjected to uniform force on the rollers, control the axial positioning accuracy, and ensure flexible operation, both of which can improve the service life of the bearing.

[0005] This utility model provides a bearing structure that is easy to install and remove and allows for adjustment of axial movement and radial clearance, comprising: an outer ring assembly and an inner ring assembly, wherein the inner ring assembly is located inside the outer ring assembly, and a roller assembly is located between the inner ring assembly and the outer ring assembly, and the inner hole of the inner ring assembly is a conical surface; a double semi-locking bushing, wherein the double semi-locking bushing is located inside the inner ring assembly, and the outer side of the double semi-locking bushing is a conical surface and abuts against the inner side of the inner ring assembly; and a locking nut, wherein the locking nut is sleeved on the outer side of the end of the double semi-locking bushing.

[0006] Furthermore, the outer ring assembly includes a single-sided outer ring and an outer retaining ring, the outer retaining ring being connected to the side of the single-sided outer ring without a retaining edge.

[0007] Furthermore, the inner ring assembly includes a single-sided inner ring.

[0008] Furthermore, the locking nut is connected to the side of the inner ring of the single-sided flange that is not flanged.

[0009] Furthermore, the outer diameter of the locking nut is consistent with the outer diameter of the flange of the single flange inner ring.

[0010] Furthermore, the locking nut and the outer retaining ring are located at the two axial ends of the bearing, respectively.

[0011] Furthermore, the locking nut is provided with an anti-loosening groove and a screw hole, with the screw hole passing through the anti-loosening groove axially.

[0012] Furthermore, it also includes a screw, which is screwed into the screw hole.

[0013] Furthermore, the outer end face of the locking nut is provided with a loading and unloading groove.

[0014] Furthermore, the outer conical surface portion of the double semi-locking bushing and the inner conical surface portion of the inner ring assembly are mutually mating conical surfaces.

[0015] The technical solution of this utility model, by employing a double semi-locking bushing, facilitates the installation of the bearing into the crankshaft diameter. Furthermore, during the tightening of the lock nut, the double semi-locking bushing moves axially relative to the inner ring assembly's inner conical surface, effectively adjusting the bearing's radial clearance and axial runout to meet operational requirements. Adjusting the bearing's axial runout and radial clearance ensures uniform roller stress, controls axial positioning accuracy, and guarantees flexible operation. Both of these factors contribute to improving bearing lifespan. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a bearing assembly drawing of this utility model;

[0018] Figure 2 This is a cross-sectional view of the locking nut of this utility model;

[0019] Figure 3 This is a front view of the locking nut of this utility model;

[0020] Explanation of reference numerals in the attached figures:

[0021] 1- Locking nut; 2- Single-sided outer ring; 3- Outer ring; 4- Single-sided inner ring; 5- Double semi-locking bushing; 6- Screw; 7- Screw hole; 8- Anti-loosening groove; 9- Loading / unloading groove. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "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; they can refer to the internal connection of 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.

[0025] Example 1

[0026] like Figures 1-3 As shown, this utility model provides a bearing structure that is easy to install and remove and allows for adjustment of axial movement and radial clearance. It includes: an outer ring assembly and an inner ring assembly, the inner ring assembly being located inside the outer ring assembly, and a roller assembly located between the inner and outer ring assemblies. The inner bore of the inner ring assembly is a conical surface; a double semi-locking bushing 5, located inside the inner ring assembly, with its outer side being a conical surface and abutting against the inner side of the inner ring assembly; and a locking nut 1, fitted onto the outer side of the end of the double semi-locking bushing 5. The outer conical surface portion of the double semi-locking bushing 5 and the conical portion of the inner bore of the inner ring assembly form mutually mating conical surfaces.

[0027] Specifically, as a single-row cylindrical roller bearing, the roller assembly consists of rollers and a cage, positioned between the outer ring assembly and the inner ring assembly. This is existing technology in the field and will not be described further. In this invention, the inner ring assembly has a tapered inner bore, fitted with a locking nut 1 and a double semi-locking bushing 5. Tightening the locking nut 1 directly adjusts the axial movement of the bearing, while simultaneously moving the double semi-locking bushing 5 axially, indirectly adjusting the radial clearance of the bearing. Ultimately, this achieves the required operating conditions. Adjusting the axial movement and radial clearance of the bearing ensures uniform force distribution on the rollers, controls axial positioning accuracy, and guarantees flexible operation. Both can improve bearing life. Furthermore, the design of the double semi-locking bushing 5 facilitates bearing installation into the crankshaft diameter.

[0028] Example 2

[0029] The outer ring assembly includes a single-flange outer ring 2 and an outer retaining ring 3, with the outer retaining ring 3 connected to the unflange side of the single-flange outer ring 2. The inner ring assembly includes a single-flange inner ring 4. A lock nut 1 is connected to the unflange side of the single-flange inner ring 4. The outer diameter of the lock nut 1 is the same as the outer diameter of the flange of the single-flange inner ring 4. The lock nut 1 and the outer retaining ring 3 are located at opposite axial ends of the bearing.

[0030] Specifically, to address the limited machining accuracy of the raceway caused by double flanges on the outer or inner ring, and the fact that, except for flangeless or single-flange rings, the outer ring, inner ring, and roller assemblies cannot be directly disassembled axially, leading to inconvenience in later bearing maintenance, this embodiment designs both the inner and outer rings as single-flange rings. It includes an outer retaining ring 3 (which is directly assembled onto the single-flange outer ring 2 during installation) and a locking nut 1 (which acts as the other flange on the inner ring). The locking nut 1 has a mounting and disassembly groove 9 for easy installation and removal. Since the locking nut 1 replaces the other fixed flange on the inner ring, the inner ring changes from double fixed flanges to a single flange, optimizing the inner ring raceway machining process and improving its machining accuracy. Furthermore, because the locking nut 1 acts as the other flange on the inner ring, the side of the locking nut 1 closest to the inner ring (the assembly side) must be hardened using medium-frequency quenching.

[0031] Example 3

[0032] The locking nut 1 has an anti-loosening groove 8 and a screw hole 7, with the screw hole 7 passing through the anti-loosening groove 8 axially. It also includes a screw 6, which is screwed into the screw hole 7. A loading / unloading groove 9 is provided on the outer end face of the locking nut 1.

[0033] Specifically, to prevent the locking nut 1 from loosening and causing unstable control of the bearing's axial movement and radial clearance, this embodiment provides an anti-loosening groove 8 (radially at a certain angle) and a screw hole 7 (axially) on the locking nut 1. During assembly, after the locking nut 1 is adjusted to the appropriate position, a screw 6 is screwed into the anti-loosening groove 8. During the screwing process, the thread pitch on the inner diameter of the locking nut 1 near the anti-loosening groove 8 decreases, thereby preventing the locking nut 1 from loosening.

[0034] The working principle of this utility model:

[0035] The inner ring bore is designed with a tapered surface, fitted with a lock nut 1 and a double semi-locking bushing 5. During the tightening of the lock nut 1, the axial clearance is adjusted to directly control the axial movement of the bearing. Simultaneously, the axial movement of the double semi-locking bushing 5 indirectly adjusts the radial clearance of the bearing. Adjusting both the axial movement and radial clearance ensures uniform force distribution on the rollers, controls axial positioning accuracy, and guarantees flexible operation. Furthermore, the design of the double semi-locking bushing 5 facilitates bearing installation into the crankshaft bore.

[0036] In addition, both the inner and outer rings are designed with a single retaining edge, and an outer retaining ring 3 and an inner retaining ring (the locking nut 1 acts as the retaining edge on the other side of the bearing inner ring) are designed, which can facilitate the direct axial installation and disassembly of each component; and by replacing the fixed retaining edge on the other side of the inner ring with the locking nut 1, the inner ring changes from the original double-sided fixed retaining edge to a single retaining edge, which can optimize the inner ring raceway machining process and improve the raceway machining accuracy.

[0037] During assembly, after the locking nut 1 is adjusted to the appropriate position, screw 6 is screwed into the anti-loosening groove 8. During the screwing process, the thread pitch on the inner diameter of the locking nut 1 near the anti-loosening groove 8 becomes smaller, which can prevent the locking nut 1 from loosening.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bearing structure that is easy to install and remove and allows for adjustment of axial movement and radial clearance, characterized in that, include: An outer ring assembly and an inner ring assembly, wherein the inner ring assembly is located inside the outer ring assembly, and a roller assembly is located between the inner ring assembly and the outer ring assembly, and the inner hole of the inner ring assembly is a conical surface; A double semi-locking bushing, wherein the double semi-locking bushing is located inside the inner ring assembly, and the outer side of the double semi-locking bushing is a conical surface and abuts against the inner side of the inner ring assembly. A locking nut is fitted onto the outer side of the end of the double semi-locking bushing.

2. The loadable and adjustable axial runout and radial play bearing structure of claim 1, wherein, The outer ring assembly includes a single-sided outer ring and an outer retaining ring, wherein the outer retaining ring is connected to the side of the single-sided outer ring without a retaining edge.

3. The loadable and adjustable axial runout and radial play bearing structure of claim 2, wherein, The inner ring assembly includes a single-sided inner ring.

4. The loadable and adjustable axial runout and radial play bearing structure of claim 3, wherein, The locking nut is connected to the side of the inner ring of the single-sided flange that is not flanged.

5. The loadable and adjustable axial runout and radial play bearing structure of claim 4, wherein, The outer diameter of the locking nut is the same as the outer diameter of the flange of the single flange inner ring.

6. The loadable and adjustable axial runout and radial play bearing structure of claim 4, wherein, The locking nut and the outer retaining ring are located at the two axial ends of the bearing, respectively.

7. The bearing structure according to claim 1, which is easy to install and remove and allows for adjustment of axial movement and radial clearance, is characterized in that... The locking nut has an anti-loosening groove and a screw hole, with the screw hole passing through the anti-loosening groove axially.

8. The loadable and adjustable axial runout and radial play bearing structure of claim 7, wherein, It also includes screws, which are screwed into screw holes.

9. The load-eaεily mounted and axial play and radial play adjustable bearing construction according to claim 1, characterized in that The outer end face of the locking nut is provided with a loading and unloading groove.

10. The load handling bearing assembly of claim 1, wherein, The outer conical surface portion of the double semi-locking bushing and the inner conical surface portion of the inner ring assembly are divided into mutually mating conical surfaces.

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