CN219529574U - Double-row aligning cylindrical roller bearing - Google Patents

Abstract

The utility model discloses a double-row aligning cylindrical roller bearing, which comprises an aligning ring, an outer ring and an inner ring, wherein the outer ring is adapted to the inner side of the aligning ring, the outer ring is provided with a convex spherical surface, and the aligning ring is provided with a concave spherical surface adapted to the convex spherical surface; the outer ring is in rolling fit with the inner ring through the retainer component and the cylindrical roller component; the pocket Kong Nashi of the cage assembly is provided with a cylindrical roller assembly including a long cylindrical roller and a short cylindrical roller; the adjacent two pockets Kong Nachang are staggered with the short cylindrical rollers. The utility model can lead the bearing to have certain aligning performance, effectively increase the number of the cylindrical rollers, improve the rated load and the service life of the bearing, effectively improve the stress distribution and reduce the rotation indentation of the cylindrical rollers on the roller path; the weight of the retainer can be reduced, the material cost is saved, the strength of the retainer is effectively increased, and the phenomenon of fracture in the traditional rivet connection is avoided.

Description

Double-row aligning cylindrical roller bearing

Technical Field

The utility model relates to the technical field of roller bearings, in particular to a double-row self-aligning cylindrical roller bearing.

Background

The cylindrical roller bearing belongs to a split bearing, is convenient to install and detach, can bear larger radial load and is suitable for being used in high-speed operation occasions. The cylindrical roller bearing is widely applied to the fields of motors, speed reducers, precision machine tools, metallurgical rolling mills, papermaking machines, engineering machines, radar antennas, wind power generation and the like. Along with the development of scientific technology, the application field of the bearing is wider and wider, the requirement of a host on the bearing is higher and higher, and the bearing is developed towards the directions of high precision, high bearing, high rotating speed, low friction, long service life, high adaptability and the like. The general cylindrical roller bearing can only bear radial load and a small amount of axial load, and can only realize axial movement, and when the mounting shaft is too long, the shaft generates deflection deformation, the aligning performance cannot be realized. Although the aligning roller bearing or the aligning ball bearing can realize aligning performance, the aligning roller bearing or the aligning ball bearing cannot adapt to axial displacement caused by expansion and contraction of the shaft, and a roller path on one side of the bearing is stressed to cause advanced failure.

One patent with the publication number CN201083232Y discloses a double-row cylindrical roller bearing with a centering ring, wherein the parts of the double-row cylindrical roller bearing comprise the centering ring (1), an outer ring (2), rollers (3), an inner ring (4), a retainer (5) and a retainer cover (6), the centering ring (1) is a broken circular ring, an oil groove (8) is formed in the center of the outer diameter, oil holes (9) are uniformly distributed in the oil groove (8), and the inner diameter is a concave spherical surface; the outer surface of the outer ring (2) is a convex sphere which is communicated with the concave sphere of the centering ring (1); the rollers of the bearing are two rows of rollers with the same specification, the stress distribution of the roller path is uneven, in addition, the retainer is connected by adopting a traditional rivet, the connection strength is low, the roller friction and the external load are subject to fracture phenomena, and the service life of the bearing is influenced.

Disclosure of Invention

The utility model aims to overcome the existing defects, and provides the double-row aligning cylindrical roller bearing, which can enable the bearing to have certain aligning performance, effectively increase the number of cylindrical rollers, improve the rated load and the service life of the bearing, effectively improve the stress distribution and reduce the rotation indentation of the cylindrical rollers on a roller path; the weight of the retainer can be reduced, the material cost is saved, the strength of the retainer is effectively increased, the occurrence of the fracture phenomenon of the traditional rivet connection is avoided, and the problem in the background technology can be effectively solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the double-row aligning cylindrical roller bearing comprises an aligning ring, an outer ring and an inner ring, wherein the outer ring is adapted to the inner side of the aligning ring, the outer ring is provided with a convex spherical surface, and the aligning ring is provided with a concave spherical surface adapted to the convex spherical surface; the outer ring is in rolling fit with the inner ring through the retainer component and the cylindrical roller component; the pocket Kong Nashi of the cage assembly is provided with a cylindrical roller assembly including a long cylindrical roller and a short cylindrical roller; the adjacent two pockets Kong Nachang are staggered with the short cylindrical rollers.

Preferably, the cage assembly comprises two cage beams and struts, the two cage beams being connected by a plurality of struts.

Preferably, the support column is a stepped cylinder, two ends of the support column are positioning sections correspondingly matched with the two retainer beams, and the diameter of the middle section of the support column is larger than that of the positioning end.

Preferably, the retainer beam is provided with a strut aperture adapted to the locating section of the strut.

Preferably, a plurality of the strut holes are uniformly distributed around the center of the retainer beam, two pockets are arranged between two adjacent strut holes, and the strut holes are arranged at the wide section of the retainer beam.

Compared with the prior art, the utility model has the beneficial effects that: the aligning ring is matched with the spherical surface of the outer ring, so that the bearing has certain aligning performance; the cylindrical roller assembly adopts long cylindrical rollers and short cylindrical rollers which are different in length and distributed in a staggered manner, so that the number of the cylindrical rollers is effectively increased, the rated load and the service life of the bearing are improved, the stress distribution is effectively improved, and the rotary indentation of the cylindrical rollers on a roller path is reduced; the retainer assembly adopts two retainer beams and a pillar to be fixedly connected, so that the weight of the retainer can be reduced, the material cost is saved, the pocket length of the retainer is reduced, friction is reduced, the starting friction moment is reduced, the working speed of the bearing is improved, the pillar adopts a stepped cylinder, the diameter and the connection strength of the pillar can be effectively increased, and the original rivet fracture phenomenon is prevented.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a cage beam structure of the present utility model;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a schematic diagram of a strut structure.

In the figure: 1 aligning ring, 2 outer ring, 3 inner ring, 4 cage, 4.1 cage beam, 4.11 pillar hole, 4.12 pocket hole, 4.2 pillar, 5 long cylindrical roller, 6 short cylindrical roller.

Detailed Description

In the description, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., the drawings merely correspond to the drawings of the present utility model, and in order to facilitate description of the present utility model, it is not indicated or implied that the device or element referred to must have a specific azimuth:

referring to fig. 1-4, the present utility model provides a technical solution: the double-row aligning cylindrical roller bearing comprises an aligning ring 1, an outer ring 2 and an inner ring 3, wherein the outer ring 2 is adapted to the inner side of the aligning ring 1, the outer ring 2 is provided with a convex spherical surface, and the aligning ring 1 is provided with a concave spherical surface adapted to the convex spherical surface; the outer ring 2 is in rolling fit with the inner ring 3 through a retainer component 4 and a cylindrical roller component; a cylindrical roller assembly is adapted in the pocket 4.12 of the retainer assembly 4, and comprises a long cylindrical roller 5 and a short cylindrical roller 6; the long cylindrical rollers 5 and the short cylindrical rollers 6 in the two adjacent pockets 4.12 are distributed in a staggered way; the long cylindrical rollers 5 and the short cylindrical rollers 6 are distributed in the pockets 4.12 of the retainer assembly 4 in a staggered manner, and the number of the cylindrical rollers is effectively increased by adopting the cylindrical rollers with different lengths and staggered distribution, so that the rated load and the service life of the bearing are improved, the stress distribution is effectively improved, and the rotary indentation of the cylindrical rollers on the roller path is reduced;

as shown in fig. 2, 3 and 4, the cage assembly 4 comprises two cage beams 4.1 and struts 4.2, the two cage beams 4.1 being connected by a plurality of struts 4.2; the retainer assembly 4 adopts two separated retainer beams 4.1 and a strut 4.2, so that the weight of the traditional retainer can be reduced, and the material cost can be saved, thereby reducing the pocket length of the retainer, reducing friction, reducing the starting friction moment and improving the working rotation speed of the bearing;

further, the support column 4.2 is a stepped cylinder, two ends of the support column 4.2 are positioning sections correspondingly matched with the two retainer beams 4.1, and the diameter of the middle section of the support column 4.2 is larger than that of the positioning end; the two retainer beams 4.1 are connected by adopting the support column 4.2 with the steps, so that the diameter and the connection strength of the support column 4.2 can be effectively increased, and the traditional rivet connection fracture phenomenon is prevented;

furthermore, the cage beam 4.1 is provided with a strut hole 4.11 adapted to the positioning section of the strut 4.2; the plurality of strut holes 4.11 are uniformly distributed around the center of the retainer beam 4.1, two pockets 4.12 are arranged between two adjacent strut holes 4.11, and the strut holes 4.11 are arranged at the wide section of the retainer beam 4.1 to ensure the strength of struts and beam width; the two retainer beams 4.1 have the same structure and size, and are connected by a group of struts 4.2 with steps at the middle and are separated by a certain distance, so that the cylindrical roller assembly can flexibly rotate in the pocket 4.12; the struts 4.2 are arranged in the strut holes 4.11 of the retainer beams 4.1, the distance between the two retainer beams 4.1 is ensured by the middle section of the struts 4.2, and the positioning sections at the two ends of the struts 4.2 are locked by cold riveting or hot riveting.

The utility model has not been described in detail in the prior art, and it is apparent to those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the above-described embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (5)

1. The utility model provides a biserial aligning cylindrical roller bearing, includes aligning circle (1), outer lane (2) and inner circle (3), its characterized in that: the outer ring (2) is adapted to the inner side of the aligning ring (1), the outer ring (2) is provided with a convex spherical surface, and the aligning ring (1) is provided with a concave spherical surface adapted to the convex spherical surface; the outer ring (2) is in rolling fit with the inner ring (3) through the retainer component (4) and the cylindrical roller component; a cylindrical roller assembly is fit in the pocket (4.12) of the retainer assembly (4), and comprises a long cylindrical roller (5) and a short cylindrical roller (6); the long cylindrical rollers (5) and the short cylindrical rollers (6) in two adjacent pockets (4.12) are distributed in a staggered mode.

2. A double row self aligning cylindrical roller bearing according to claim 1, wherein: the cage assembly (4) comprises two cage beams (4.1) and struts (4.2), the two cage beams (4.1) being connected by a plurality of struts (4.2).

3. A double row self aligning cylindrical roller bearing according to claim 2, wherein: the support column (4.2) is a stepped cylinder, two ends of the support column (4.2) are positioning sections correspondingly matched with the two retainer beams (4.1), and the diameter of the middle section of the support column (4.2) is larger than that of the positioning end.

4. A double row self aligning cylindrical roller bearing according to claim 3, wherein: the cage beam (4.1) is provided with a strut hole (4.11) adapted to the positioning section of the strut (4.2).

5. A double row self aligning cylindrical roller bearing according to claim 4, wherein: the strut holes (4.11) are uniformly distributed around the center of the retainer beam (4.1), two pockets (4.12) are arranged between two adjacent strut holes (4.11), and the strut holes (4.11) are arranged at the wide section of the retainer beam (4.1).