Large wide-series self-aligning roller bearing

Abstract

The utility model discloses a large wide-series self-aligning roller bearing and relates to the technical field of bearings. In order to solve the problem that when a large self-aligning roller bearing is assembled, a plurality of rollers need to be mounted in pockets in a retainer firstly, then the retainer with the rollers is sleeved on an inner ring, and the rollers on the retainer fall off in the process, so that the assembly efficiency is low. By adopting the split structure, the design size of the retainer can be increased, a larger rolling body can be assembled, and the bearing capacity of the bearing is improved; a notch is formed in the outer surface of the retainer, and three pockets are formed in the notch of the retainer during assembly, so that the maximum outer diameter of the retainer and a roller assembly can be reduced and is lower than the minimum diameter of the end surface of the retainer, and the assembly efficiency is improved when the inner ring, the retainer, the roller and the outer ring are assembled; and finally, a roller is arranged in each of the three pockets formed in the retainer, so that the assembling operation of the bearing can be completed. The self-aligning roller bearing is suitable for the technical field of wide-series self-aligning roller bearings.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a large-scale wide series spherical roller bearing. Background Art

[0002] At present, spherical roller bearings have good self-aligning performance, can automatically compensate for a certain angle deviation between the shaft and the bearing seat and the flexural deformation of the shaft, so that the shaft can run smoothly; the load-bearing capacity is high, and it can withstand a large radial load and a certain axial load; the rollers are longer and the contact area with the raceway is larger, which can disperse the load and improve the load-bearing capacity and life; they usually have larger sizes and are suitable for large mechanical equipment.

[0003] Large spherical roller bearings are widely used in various large industrial equipment, such as mining machinery, metallurgical equipment, large fans, papermaking machinery, cement equipment, etc., and play an important role under heavy load, low speed and complex operating conditions.

[0004] However, large spherical roller bearings are relatively wide. When the bearings are assembled, the cage assembly is equipped with too many rollers to fit into the outer ring. Ultimately, most of the rollers need to be hammered into the cage little by little with copper rods, which is very inefficient.

[0005] In summary, the existing large spherical roller bearings adopt a traditional cage structure. When assembling the bearings, it is necessary to first install multiple rollers into the pockets on the cage, and then put the cage with rollers on the inner ring. During this process, the rollers on the cage may fall off, resulting in low assembly efficiency. Utility Model Content

[0006] The utility model proposes a large wide series spherical roller bearing to solve the problem that during the assembly of a large spherical roller bearing, a plurality of rollers need to be installed in the pockets on the cage first, and then the cage with the rollers is mounted on the inner ring. During this process, the rollers on the cage may fall off, resulting in low assembly efficiency.

[0007] The utility model discloses a large-scale wide series spherical roller bearing, which comprises an inner ring 1, an outer ring 2, a roller 3 and two retaining frames 4;

[0008] Two roller channels are evenly processed on the circumferential outer surface of the inner ring 1 along the axial direction. A retainer 4 is sleeved on both ends of the outer surface of the inner ring 1, and one end surface of each retainer 4 is processed with multiple pockets along the circumferential direction. The closed end surfaces of the two retainers 4 are arranged in contact, and a roller 3 is arranged inside each pocket of the retainer 4. The outer surface of the retainer 4 is sleeved with the outer ring 2;

[0009] Furthermore, the outer surface of the roller 3 is in rolling contact with the inner bottom surface of the roller channel on the inner ring 1;

[0010] Furthermore, a notch is machined on the outer surface of the retainer 4, and the notch is coaxially arranged with one of the pockets;

[0011] Furthermore, the diameter of the notch on the retainer 4 is the same as the diameter of the pocket;

[0012] Furthermore, the depth of the pocket on the retainer 4 is one quarter of the pocket radius;

[0013] Furthermore, the retaining frame 4 is in a conical ring shape.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model overcomes the shortcomings of the prior art. Large-scale self-aligning roller bearings of this structure are generally used in large-scale mechanical equipment. The split structure is adopted, which can increase the design size of the cage, assemble larger rolling elements, and improve the bearing capacity of the bearing. In addition, a notch is processed on the outer surface of the cage. During assembly, three pockets are emptied at the notch on the cage, which can reduce the maximum outer diameter of the cage and roller assembly to be lower than the minimum diameter of the cage end face. When the inner ring, cage, roller and outer ring are assembled, it is finally necessary to respectively install a roller in the three vacated pockets on the cage to complete the transfer operation of the bearing. If the bearing width is wider, the pockets at the symmetrical positions of the notch on the cage can be emptied, which can further reduce the maximum outer diameter of the cage and roller assembly, and finally the vacated pockets can be hammered into the cage one by one. The bearing of this structure can avoid the phenomenon of rollers on the cage falling off during assembly, thereby improving the assembly efficiency of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main sectional view of a large wide series spherical roller bearing described in the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of two retainers in a large-scale wide series spherical roller bearing described in the utility model in an assembled state;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of an inner ring of a large-scale wide series spherical roller bearing described in the utility model. DETAILED DESCRIPTION

[0019] Specific implementation method 1: Combination Figures 1 to 3The present embodiment is described as follows: a large-scale wide-series spherical roller bearing comprises an inner ring 1, an outer ring 2, rollers 3 and two retainers 4;

[0020] Two roller channels are evenly processed on the circumferential outer surface of the inner ring 1 along the axial direction. A retainer 4 is sleeved on both ends of the outer surface of the inner ring 1, and one end surface of each retainer 4 is processed with multiple pockets along the circumferential direction. The closed end surfaces of the two retainers 4 are arranged in contact, and a roller 3 is arranged inside each pocket of the retainer 4. The outer surface of the retainer 4 is sleeved with the outer ring 2;

[0021] This specific implementation method adopts a split structure, which can increase the design size of the cage, assemble larger rolling elements, and improve the bearing capacity of the bearing; and a notch is machined on the outer surface of the cage, and three pockets are emptied at the notch on the cage during assembly, which can reduce the maximum outer diameter of the cage and roller assembly to less than the minimum diameter of the cage end face. When the inner ring, cage, roller and outer ring are assembled, it is finally necessary to respectively install a roller in the three vacant pockets on the cage to complete the bearing transfer operation; if the bearing width is wider, the pockets at the symmetrical positions of the notch on the cage can be emptied to further reduce the maximum outer diameter of the cage and roller assembly, and finally the vacated pockets can be hammered into the cage one by one; the bearing with this structure can avoid the phenomenon of rollers on the cage falling off during assembly, thereby improving the assembly efficiency of the bearing;

[0022] Large spherical roller bearings with this structure are mainly used in large equipment such as metallurgical mines. They can automatically compensate for a certain angle deviation between the shaft and the bearing seat and the flexural deformation of the shaft, and provide high load-bearing capacity. When the bearing width is wider, the overall cage occupies a large space, the internal aligning angle is too large, and the radial load-bearing capacity of the bearing is affected. The use of a split cage can optimize the internal structure and improve the load-bearing capacity. The ordinary series of spherical roller bearings consider the bearing installation problem when designing. The wider the width of the spherical roller bearing, the more difficult it is to install. After optimizing the cage, the cage assembly diameter is reduced, which can reduce the difficulty of cage assembly.

[0023] Specific implementation method 2: Combination Figures 1 to 3 The present embodiment is described as a further limitation of the bearing described in the first embodiment. The present embodiment describes a large-scale wide series spherical roller bearing, wherein the outer surface of the roller 3 is in rolling contact with the inner bottom surface of the roller channel on the inner ring 1.

[0024] Specific implementation method three: Combination Figures 1 to 3The present embodiment is described as a further limitation of the bearing described in the first embodiment. The present embodiment describes a large wide series spherical roller bearing, wherein a notch is machined on the outer surface of the retaining frame 4, and the notch is coaxially arranged with one of the pockets.

[0025] Specific implementation method four: Combination Figures 1 to 3 This embodiment is described as a further limitation of the bearing described in the third embodiment. In the large wide series spherical roller bearing described in this embodiment, the diameter of the notch on the retaining frame 4 is the same as the diameter of the pocket.

[0026] Specific implementation method five: Combination Figures 1 to 3 This embodiment is described as a further limitation of the bearing described in the fourth embodiment. In the large wide series spherical roller bearing described in this embodiment, the depth of the pocket on the retaining frame 4 is one quarter of the radius of the pocket.

[0027] Specific implementation method six: Combination Figures 1 to 3 This embodiment is described as a further limitation of the bearing described in the fifth embodiment. This embodiment describes a large-scale wide-series spherical roller bearing, and the retainer 4 is a tapered ring.

Claims

1. A large wide series spherical roller bearing, characterized by: It includes an inner ring (1), an outer ring (2), rollers (3) and two cages (4); Two roller channels are evenly processed on the circumferential outer surface of the inner ring (1) along the axial direction. A retainer (4) is respectively sleeved on both ends of the outer surface of the inner ring (1), and one end face of each retainer (4) is processed with a plurality of pockets along the circumferential direction. The closed end faces of the two retainers (4) are arranged in contact with each other, and a roller (3) is arranged inside each pocket of the retainer (4). The outer surface of the retainer (4) is sleeved with an outer ring (2).

2. A large wide series spherical roller bearing according to claim 1, characterized in that: The outer surface of the roller (3) is in rolling contact with the inner bottom surface of the roller channel on the inner ring (1).

3. A large-scale wide-series spherical roller bearing according to claim 1, characterized in that: A notch is machined on the outer surface of the retaining frame (4), and the notch is coaxially arranged with one of the pocket holes.

4. A large-scale wide-series spherical roller bearing according to claim 3, characterized in that: The diameter of the notch on the retaining frame (4) is the same as the diameter of the pocket hole.

5. A large-scale wide-series spherical roller bearing according to claim 4, characterized in that: The depth of the pocket hole on the retaining frame (4) is one quarter of the pocket hole radius.

6. A large-scale wide-series spherical roller bearing according to claim 5, characterized in that: The retaining frame (4) is in the shape of a cone ring.

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