Anti-falling sealing structure for conical bearing of automobile hub

Abstract

The invention discloses an automobile hub conical bearing anti-falling sealing structure which comprises an outer ring, a plurality of conical rollers are arranged on the inner wall of the outer ring at equal intervals, an inner ring is arranged on the inner sides of the conical rollers, a clamping groove is annularly formed in the inner ring, a first limiting groove and a second limiting groove are formed in the two ends of the clamping groove, and the clamping groove is connected with a locking block in a clamped mode. The centripetal end faces of the multiple locking blocks are connected with an axle outer ring, and the first limiting groove and the second limiting groove are slidably connected with the two ends of the locking blocks. Meanwhile, dust enters due to poor lubrication, abrasion of a retainer and a rolling body is aggravated, the retainer is broken, the rollers are scattered, a single tapered roller is seriously abraded, the tapered rollers cannot revolve along an inner ring, a gap between the inner ring and an outer ring goes wrong, and the tapered rollers fall off.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and particularly to an anti-drop-off sealing structure for an automotive wheel hub tapered bearing. Background Art

[0002] In a patent application with the publication number CN222391769U, a cylindrical roller bearing with an anti-drop-off function is disclosed, belonging to the technical field of cylindrical roller bearings, to solve the problem that the inner ring of the bearing may be disengaged from the cylindrical rollers; it includes an inner ring of the bearing and cylindrical rolling elements; an outer ring structure of the bearing is fitted on the outer side of the cylindrical rolling elements, and auxiliary components are fixedly arranged on both sides of the outer ring structure; a dust-proof component is fixedly arranged on the outer side of the inner ring of the bearing; by providing an anti-drop-off groove and two groups of anti-drop-off protrusions, after the outer ring structure, the cylindrical rolling elements, and the inner ring of the bearing are assembled, the cylindrical rolling elements will be blocked by the anti-drop-off groove and the two groups of anti-drop-off protrusions; it can prevent the disengagement between the inner ring of the bearing and the cylindrical rolling elements; by the mutual cooperation between the threaded cylinder, the connecting hole, and the bolt rod, the outer ring frame A and the outer ring frame B can be quickly fixed; it can ensure that the inner ring of the bearing and the cylindrical rollers cannot be disengaged on the premise of facilitating assembly.

[0003] Existing automotive tapered shaft roller bearings can better withstand radial forces, axial forces, and combined loads. However, if the existing automotive wheel hub tapered bearings are improperly installed, such as improper control of the coaxiality error and clearance during the assembly of the tapered bearings, the rollers will be unevenly stressed and drop off during use; at the same time, poor lubrication and dust ingress will exacerbate the wear between the cage and the rolling elements, ultimately leading to the fracture of the cage and the scattering of the rollers. At the same time, individual tapered rollers are severely worn, resulting in the inability of the overall tapered rollers to revolve along the inner ring, and ultimately causing problems with the clearance between the inner and outer rings, resulting in the drop-off of the tapered rollers.

[0004] Therefore, an anti-drop-off sealing structure for an automotive wheel hub tapered bearing is needed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-drop-off sealing structure for an automotive wheel hub tapered bearing to solve the technical problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: an anti-drop-off sealing structure for an automotive wheel hub tapered bearing, including an outer ring, a plurality of tapered rollers are equidistantly arranged on the inner wall of the outer ring, an inner ring is arranged inside the plurality of tapered rollers, a clamping groove is annularly formed on the inner ring, a first limiting groove and a second limiting groove are formed at both ends of the clamping groove, and the clamping groove is clamped with a locking block.

[0007] Furthermore, the centripetal end surfaces of the plurality of locking blocks are connected to the outer ring of the axle, and the first limiting groove and the second limiting groove are slidably connected to both ends of the locking block.

[0008] Furthermore, a first annular groove and a second annular groove are formed on the inner wall of the outer ring, and the first annular groove and the second annular groove are respectively slidably connected to one end of the locking block.

[0009] Furthermore, a clamping hole is provided at one end of the tapered roller, the inner ring is fixedly connected to a clamping block which is equidistantly arranged in a ring shape, and the clamping hole is rotatably connected to the clamping block.

[0010] Furthermore, the plurality of tapered rollers are rotatably connected to a retaining frame, and the retaining frame includes a locking cover and a limiting frame, and the locking cover and the limiting frame are connected by bolts.

[0011] Furthermore, the outer wall of the lock cover is rotatably connected to a first right-angle groove formed on the inner wall of the outer ring, and one end of the limit frame away from the lock rod is rotatably connected to a second right-angle groove formed on the inner wall of the inner ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects: During assembly, the axle will clamp the locking block into the slot, and then the two ends of the locking block will enter the first limiting slot and the second limiting slot, and finally the two ends of the locking block will clamp into the first ring groove and the second ring groove for sliding clamping. This method of locking by the axle first ensures the fixation of the outer ring and the inner ring. When rotating at high speed, the wear of the tapered roller or the wear of the end of the locking block will not cause the outer ring and the inner ring to separate, and the locking block can further share the wear of the tapered roller. The clamping hole at one end of the tapered roller is rotatably connected to the clamping block to ensure that each tapered roller can be driven to revolve around the inner ring during the rotation process, and can also rotate on its own. Therefore, the revolution can ensure that no single tapered roller is worn and placed at the lower end, causing the single tapered roller to wear more seriously, and all tapered rollers cannot revolve, which will cause problems in the gap between the outer ring and the inner ring for a long time, resulting in the phenomenon of tapered roller falling off; The first right-angle groove and the second right-angle groove can further fix the lock cover and the limit frame, and deformation between the lock cover and the limit frame can be avoided as much as possible, ensuring that the position of the tapered roller is fixed. The first right-angle groove and the second right-angle groove can ensure that dust does not directly enter between the lock cover and the limit frame, causing the lubricating oil to wear more severely. At the same time, the lock cover and the limit frame are rotatably connected to the first right-angle groove and the second right-angle groove respectively, which can avoid the loss of lubricating oil as much as possible and aggravate the wear of the tapered roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 An exploded view of the present invention; Figure 3 It is a schematic diagram of the structure of the locking block and the outer ring in the present invention; Figure 4Schematic structural diagram of the locking block and the inner ring in the present invention; Figure 5 Schematic structural diagram of the tapered roller and the inner ring in the present invention; Figure 6 is Figure 5 the enlarged view at position A in Figure 7 Schematic structural diagram of the cage in the present invention; Figure 8 Schematic structural diagram of the lock cover and the limit frame in the present invention.

[0014] In the figure: 1 - outer ring, 11 - first annular groove, 12 - second annular groove, 2 - inner ring, 21 - clamping groove, 211 - first limit groove, 212 - second limit groove, 22 - clamping block, 3 - locking block, 4 - cage, 41 - lock cover, 42 - limit frame, 5 - tapered roller, 51 - clamping hole. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figure 1-8 , a technical solution provided by the present invention: an anti - shedding and sealing structure for a tapered bearing of an automotive wheel hub, including an outer ring 1. A plurality of tapered rollers 5 are equidistantly arranged on the inner wall of the outer ring 1. An inner ring 2 is arranged inside the plurality of tapered rollers 5. The inner ring 2 is provided with a clamping groove 21 in a circular shape. The two ends of the clamping groove 21 are provided with a first limit groove 211 and a second limit groove 212. The clamping groove 21 is clamped with a locking block 3. The centripetal end faces of the plurality of locking blocks 3 are connected to the outer ring 1 of the axle. The first limit groove 211 and the second limit groove 212 are slidably connected to both ends of the locking block 3. The inner wall of the outer ring 1 is provided with a first annular groove 11 and a second annular groove 12. The first annular groove 11 and the second annular groove 12 are respectively slidably connected to one end of the locking block 3. During assembly, the axle will snap the locking block 3 into the clamping groove 21. Then, both ends of the locking block 3 will enter the first limit groove 211 and the second limit groove 212. Finally, both ends of the locking block 3 are snapped into the first annular groove 11 and the second annular groove 12 for sliding connection. This method of locking by the axle first ensures the fixation of the outer ring 1 and the inner ring 2. When rotating at high speed, neither the wear of the tapered rollers 5 nor the wear of the end portions of the locking blocks 3 will cause the outer ring 1 and the inner ring 2 to disengage, and the locking blocks 3 can further share the wear of the tapered rollers 5.

[0017] One end of the tapered roller 5 is provided with a clamping hole 51. The inner ring 2 is fixedly connected with clamping blocks 22 arranged at equal intervals in a ring shape. The clamping hole 51 is rotatably connected with the clamping blocks 22. The fact that the clamping hole 51 opened at one end of the tapered roller 5 is rotatably connected with the clamping blocks 22 can ensure that each tapered roller 5 can be driven to revolve around the inner ring 2 during the rotation process, and at the same time, it can also rotate on its own axis. Thus, the revolution can ensure that no single tapered roller 5 is worn and placed at the lower end. When a single tapered roller 5 is severely worn and all the tapered rollers 5 cannot revolve, in the long term, problems will occur in the clearance between the outer ring 1 and the inner ring 2, resulting in the phenomenon that the tapered rollers 5 fall off.

[0018] A plurality of tapered rollers 5 are rotatably connected with a cage 4. The cage 4 includes a lock cover 41 and a limit frame 42. The lock cover 41 and the limit frame 42 are connected by bolts. Through the cage 4 and the lock cover 41, the distance between the tapered rollers 5 can be further restricted, avoiding the phenomenon of extrusion and wear between them.

[0019] The outer wall of the lock cover 41 is rotatably connected with a first right-angle groove opened on the inner wall of the outer ring 1. One end of the limit frame 42 away from the lock rod is rotatably connected with a second right-angle groove opened on the inner wall of the inner ring 2. Through the first right-angle groove and the second right-angle groove, the lock cover 41 and the limit frame 42 can be further fixed. The first right-angle groove and the second right-angle groove can prevent the lock cover 41 and the limit frame 42 from deforming, ensuring the position of the tapered rollers 5 is fixed. Moreover, the first right-angle groove and the second right-angle groove can ensure that dust does not directly enter between the lock cover 41 and the limit frame 42, causing the lubricating oil to wear more severely. At the same time, the lock cover 41 and the limit frame 42 are respectively rotatably connected with the first right-angle groove and the second right-angle groove, which can minimize the loss of lubricating oil and prevent the wear of the tapered rollers 5 from being aggravated.

[0020] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A cone bearing anti-drop-off sealing structure for an automobile wheel hub, comprising an outer ring (1), characterized in that: A plurality of tapered rollers (5) are equidistantly arranged on the inner wall of the outer ring (1). An inner ring (2) is arranged inside the plurality of tapered rollers (5). The inner ring (2) is provided with a clamping groove (21) in a circular shape. First limiting grooves (211) and second limiting grooves (212) are formed at both ends of the clamping groove (21). The clamping groove (21) is clamped with a locking block (3).

2. The anti-detachment and sealing structure of a conical bearing for an automotive wheel hub according to claim 1, characterized in that: The centripetal end faces of the plurality of locking blocks (3) are connected to the outer ring (1) of the axle. The first limiting groove (211) and the second limiting groove (212) are slidably connected to both ends of the locking block (3).

3. The anti-detachment and sealing structure of a conical bearing for an automobile wheel hub according to claim 1, wherein: First annular grooves (11) and second annular grooves (12) are formed on the inner wall of the outer ring (1). The first annular grooves (11) and the second annular grooves (12) are respectively slidably connected to one end of the locking block (3).

4. A cone bearing anti-drop-off sealing structure for an automotive wheel hub according to claim 1, characterized in that: A clamping hole (51) is formed at one end of the tapered roller (5). The inner ring (2) is fixedly connected to clamping blocks (22) arranged equidistantly in a circular shape. The clamping hole (51) is rotatably connected to the clamping block (22).

5. The anti-detachment sealing structure of a conical bearing for an automobile wheel hub according to claim 1, wherein: The plurality of tapered rollers (5) are rotatably connected to a cage (4). The cage (4) includes a lock cover (41) and a limiting frame (42). The lock cover (41) and the limiting frame (42) are connected by bolts.

6. A cone bearing anti-drop-off sealing structure for an automobile wheel hub according to claim 1, characterized in that: The outer wall of the lock cover (41) is rotatably connected to a first right-angle groove formed on the inner wall of the outer ring (1). One end of the limiting frame (42) far from the lock rod is rotatably connected to a second right-angle groove formed on the inner wall of the inner ring (2).

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