CN220850365U - Tapered roller bearings that effectively reduce tapered roller wear - Google Patents

Abstract

The utility model belongs to the field of tapered roller bearings, and proposes a tapered roller bearing that effectively reduces the wear of the tapered roller, including an outer ring, an inner ring, a retainer, a tapered roller and a sealing cover, wherein the retainer includes a frame body and an installation opening, a center convex is arranged at the center of the small end of the installation opening, and the center convex is matched with a top groove arranged on the tapered roller, an axial hole is arranged at the center of the large end, a convex lip platform is arranged on the inner edge of the large end side of the frame body, and the outer wall of the convex lip platform is concentrically contacted with the inner wall of the sealing cover, and a plurality of top cones corresponding to the axial holes are arranged on the sealing cover, and a top made of wear-resistant hard alloy is arranged on the top of the top cone, and a folding edge folded toward the end face of the outer ring is arranged on the side of the sealing cover away from the convex lip platform, and the folding edge is tightly matched with the annular groove arranged on the outer ring. The device is orderly assembled, reasonably designed, has good wear resistance, good sealing and long service life, and is suitable for large-scale promotion.

Description

Tapered roller bearings that effectively reduce tapered roller wear

Technical Field

The utility model belongs to the field of tapered roller bearings, and in particular relates to a tapered roller bearing which can effectively reduce the wear of tapered rollers.

Background technique

Bearings are components that fix and reduce the friction coefficient of loads during mechanical transmission. Bearings are an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce its friction coefficient during movement, and ensure its rotation accuracy. According to the different friction properties of the moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Rolling bearings include deep groove ball bearings, cylindrical roller bearings, and tapered roller bearings. Among them, tapered roller bearings also include single-row, double-row, and even multi-row roller bearings.

At present, tapered roller bearings generally consist of four parts: an outer ring, an inner ring, a tapered roller and a cage, and some bearings also have a sealing cover. Patent CN202122115868.4 discloses a tapered roller bearing that effectively reduces the wear of tapered rollers, and relates to a tapered roller bearing, wherein the inner edge formed by multiple tapered rollers is sleeved on the inner ring, and the inner edges formed by multiple tapered rollers are respectively in contact with the outer wall of the inner ring, the expanded neck end of the tapered roller is located at the expanded neck end of the outer wall of the inner ring, the end of the expanded neck end of the tapered roller is against the annular protrusion, the support ring is located at the necking end of the outer wall of the inner ring, the outer ring is sleeved on the outside of multiple tapered rollers, and the expanded neck end of the inner wall of the outer ring is located at the expanded neck end of the tapered roller. The bearing reduces the friction between the retaining frame and the tapered roller by setting multiple inclined pins as the axis of the tapered roller on the retaining frame. However, in the actual operation of the tapered roller, the root of the pins is subjected to a large shear force, which has a heat concentration effect. Once a break occurs, the resistance of the tapered roller in the dynamic balance direction will increase, affecting the working performance of the bearing. Secondly, the sealing of the bearing needs to be improved to reduce the amount of grease extruded.

Utility Model Content

The utility model aims at the technical problems existing in the above-mentioned tapered roller bearings and proposes a tapered roller bearing which has reasonable design, good wear resistance, good sealing performance and long service life and can effectively reduce the wear of the tapered rollers.

In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the utility model provides a tapered roller bearing that effectively reduces the wear of the tapered roller, including an outer ring and an inner ring, a retaining frame is arranged between the outer ring and the inner ring, the retaining frame includes a frame body, a plurality of mounting openings are arranged on the frame body, and tapered rollers are arranged in the mounting openings, the mounting openings include a small opening end corresponding to the small bottom end of the tapered roller and a large opening end corresponding to the large bottom end of the tapered roller, a sealing cover is arranged at one end of the outer ring and the inner ring, and a A center circular convex is provided, and the center circular convex cooperates with the top groove arranged on the tapered roller. An axial hole is arranged at the center of the large end. A convex lip platform is provided on the inner edge of the large end side of the frame. The outer wall of the convex lip platform is concentrically contacted with the inner wall of the sealing cover. The sealing cover is provided with a plurality of top cones corresponding to the axial holes one by one. The top of the top cone is provided with a tip made of wear-resistant cemented carbide. The sealing cover is provided with a rim folded toward the end face of the outer ring on the side away from the convex lip platform, and the rim is tightly matched with the annular groove arranged on the outer ring.

Preferably, the thickness of the central circular convexity is less than 2.00 mm.

Preferably, a plurality of evenly distributed arc-shaped slots are arranged on the outer side of the convex lip platform, and the arc-shaped slots are engaged with the arc-shaped clips arranged on the inner wall of the sealing cover.

Preferably, a V-shaped compression seam is provided in the middle of the hemming.

Preferably, the outer end surface of the sealing cover is provided with a plurality of arc-shaped structural plate grooves.

Compared with the prior art, the advantages and positive effects of the utility model are:

1. The utility model provides a tapered roller bearing that effectively reduces the wear of the tapered roller. The tapered roller and the center convex phase frictionally enter the assembly position, and the center convex is used to center the small bottom end of the tapered roller. The tapered roller and the sealing cover with the top cone are successively installed on the retaining frame. The top cone supports the center of the large bottom end of the tapered roller, thereby improving the coaxiality of its rotation and reducing the friction between it and the retaining frame. In addition, the utility model has orderly assembly, reasonable design, good wear resistance, good sealing and long service life, and is suitable for large-scale promotion.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic structural diagram of a tapered roller bearing that effectively reduces tapered roller wear provided by an embodiment;

FIG2 is a cross-sectional view of a tapered roller bearing that effectively reduces tapered roller wear provided by an embodiment;

FIG3 is an enlarged schematic diagram of structure A in FIG1 ;

FIG4 is a perspective view of a retainer provided in an embodiment;

FIG5 is an isometric view of a tapered roller bearing that effectively reduces tapered roller wear according to an embodiment;

FIG6 is a bottom view of a tapered roller bearing that effectively reduces tapered roller wear according to an embodiment;

In the above figures, 1, outer ring; 2, inner ring; 3, retaining frame; 31, frame body; 32, mounting opening; 33, center circular convex; 34, axial hole; 35, convex lip platform; 4, tapered roller; 5, sealing cover; 51, top cone; 52, top; 53, edging; 54, compression seam; 55, arc-shaped clamping strip; 56, structural plate groove.

Detailed ways

In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

Embodiment, as shown in Figures 1 to 6, the utility model provides a tapered roller bearing that effectively reduces the wear of tapered rollers, including an outer ring 1 and an inner ring 2, a retaining frame 3 is arranged between the outer ring 1 and the inner ring 2, the retaining frame 3 includes a frame body 31, a plurality of mounting openings 32 are arranged on the frame body 31, and tapered rollers 4 are arranged in the mounting openings 32, the mounting openings 32 include a small opening end corresponding to the small bottom end of the tapered roller 4 and a large opening end corresponding to the large bottom end of the tapered roller 4, and a sealing cover 5 is arranged at one end of the outer ring 1 and the inner ring 2. On this basis, the utility model is provided with a center circular protrusion 33 at the center of the small mouth end, and the center circular protrusion 33 cooperates with the top groove provided on the tapered roller 4, and an axial hole 34 is provided at the center of the large mouth end. A convex lip platform 35 is provided on the inner edge of the frame body 31 on the side where the large mouth end is located. The outer wall of the convex lip platform 35 is concentrically contacted with the inner wall of the sealing cover 5. The sealing cover 5 is provided with a plurality of top cones 51 corresponding to the axial hole 34 one by one, and a top 52 made of wear-resistant cemented carbide is provided on the top of the top cone 51. The top 52 has a high hardness, good wear resistance, and good impact resistance. The side of the sealing cover 5 away from the convex lip platform 35 is provided with a folded edge 53 folded toward the end face of the outer ring 1, and the folded edge 53 is tightly matched with the annular groove provided on the outer ring 1.

Specifically, the tapered roller 4 will rub against the center convex 33 during the process of being installed into the mounting hole, but it will not affect the tapered roller 4 entering the assembly position. The center convex 33 centers the small bottom end of the tapered roller 4, and will not fall out of the mounting port 32 under normal working pressure. Since the top cone 51 has a certain height, the tapered roller 4 and the sealing cover 5 with the top cone 51 are installed on the retaining frame 3 in sequence. The top cone 51 supports the center of the large bottom end of the tapered roller 4. Under the action of the center convex 33 and the top cone 51, the coaxiality of the tapered roller 4 can be effectively guaranteed, and the friction between the tapered roller 4 and the retaining frame 3 can be reduced. The wear resistance is good, and the assembly is orderly. The sealing cover 5 cooperates with the lip platform 35 of the retaining frame 3 to seal one end of the bearing, which is conducive to improving the working sealing of the bearing and has a good maintenance-free (adding grease) effect.

In order not to affect the tapered roller 4 from completely entering the assembly station, the thickness of the central circular protrusion 33 provided by the utility model is less than 2.00 mm, so that the tapered roller 4 can be squeezed into the cage 3 under a certain pressure.

In order to improve the matching stability between the lip platform 35 and the sealing cover 5 , the utility model provides a plurality of evenly distributed arc-shaped grooves on the outer side of the lip platform 35 , and the arc-shaped grooves are engaged with the arc-shaped clamping strips 55 provided on the inner wall of the sealing cover 5 .

In order to improve the assembly stability of the sealing cover 5, the utility model provides a V-shaped compression seam 54 in the middle of the edging 53. When the edging 53 is in a fully plug-in relationship with the annular groove, the compression seam 54 can shrink accordingly to improve the connection reliability between the edging 53 and the outer ring 1, thereby improving the assembly stability of the sealing cover 5.

In order to improve the heat dissipation performance of the bearing, the utility model is provided with a plurality of arc-shaped structural plate grooves 56 on the outer end surface of the sealing cover 5. The structural plate grooves 56 increase the surface area of the sealing cover 5, the actual heat dissipation area is larger, the heat dissipation effect is better and the sealing reliability is not affected.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims (5)

1. The utility model provides an effectively reduce tapered roller bearing of tapered roller wearing and tearing, includes outer lane and inner circle, be provided with the holder between outer lane and the inner circle, the holder includes the support body, be provided with a plurality of installing ports and installing the mouth in be provided with the tapered roller on the support body, the installing port includes the tip that corresponds with the tip of tapered roller and the big end of tapered roller corresponds, the one end of outer lane and inner circle is provided with sealed lid, its characterized in that, the center of tip is provided with the central circle protruding, the protruding roof groove cooperation that sets up on the tapered roller of central circle, the center of big end is provided with the axle center hole, the support body is provided with protruding lip platform on the inner edge of the side that the big end is located, the outer wall of protruding lip platform is concentric contact cooperation with the inner wall of sealed lid, be provided with a plurality of tip that correspond with axle center hole one-to-one, the top that the tip was made of tip cone is provided with wear-resistant hard alloy, one side that the sealed lid kept away from protruding lip platform is provided with the edge of wrapping, the edge that turns over on the annular groove that the edge is located.

2. The tapered roller bearing effective to reduce tapered roller wear as recited in claim 1, wherein the central lobe has a thickness of less than 2.00mm.

3. The tapered roller bearing for effectively reducing tapered roller wear according to claim 2, wherein a plurality of arc-shaped clamping grooves which are uniformly distributed are arranged on the outer side of the lip table, and the arc-shaped clamping grooves are clamped with arc-shaped clamping strips arranged on the inner wall of the sealing cover.

4. A tapered roller bearing effective to reduce tapered roller wear as recited in claim 3, wherein a V-shaped compression seam is provided in the middle of the binding.

5. The tapered roller bearing effective for reducing tapered roller wear as recited in claim 4, wherein the outer end surface of the seal cap is provided with a plurality of arcuate structural plate grooves.