Sealed self-aligning roller bearing
Patent Information
- Application Number
- CN202421767776.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The existing center-aligning roller bearings lack sufficient performance when they bear pure axial loads, and the lack of sealing mechanisms leads to the lubricating oil being easily thrown out, affecting the service life.
Change the drum roller to a spherical roller, and install an arc ring groove on the inner ring to increase the contact surface between the roller and the inner ring. At the same time, a convex ring and arc ring groove are provided on the inner wall of the outer ring to match the gap design to Ensure sealability.
It increases the load capacity and lubricity of the spherical rollers, prevents lubricating oil from being thrown out, and extends the service life of the bearing.
Smart Images
Figure CN222254720U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a spherical roller bearing, in particular to a sealed spherical roller bearing. Background Art
[0002] Spherical roller bearings are bearings with drum-shaped rollers assembled between an inner ring with two raceways and an outer ring with a spherical raceway. Spherical roller bearings have two rows of rollers and mainly bear radial loads, but can also bear axial loads in any direction. They have high radial load capacity and are particularly suitable for working under heavy loads or vibration loads, but cannot bear pure axial loads. The outer ring raceway of this type of bearing is spherical, so it has good self-aligning performance and can compensate for coaxiality errors. Spherical roller bearings are generally used in papermaking machinery, reduction gears, railway vehicle axles, rolling mill gearbox bearing seats, rolling mill rollers, crushers, vibrating screens, printing machinery, woodworking machinery, various industrial reducers, vertical seated spherical bearings, etc. Existing spherical roller bearings are generally provided with a cage, and the rollers are generally drum-shaped, which is effective in absorbing vibration loads. However, spherical roller bearings with spherical rollers are rare. Existing spherical roller bearings with spherical rollers also require a cage to support the spherical rollers. The contact surface between the spherical rollers and the inner and outer rings is too small, which affects the load, and there is no sealing mechanism. Utility Model Content
[0003] In order to overcome the deficiencies in the background technology, the utility model discloses a sealed spherical roller bearing, which increases the contact surface between the spherical roller and the inner ring by setting the traditional drum roller as a spherical roller and fully loading the spherical roller into two arc-shaped ring grooves provided on the inner ring, and the two protruding rings provided on the inner ring are both matched with the inner wall clearance of the outer ring, ensuring that the bearing oil is not easily thrown out, thereby achieving the purpose of increasing the load and lubrication of the spherical roller.
[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:
[0005] A sealed self-aligning roller bearing comprises an outer ring, a spherical roller and an inner ring. The inner wall of the outer ring of the outer ring is spherical. Protruding rings are respectively arranged at both ends of the inner ring outer wall of the inner ring. Inclined arcuate ring grooves are arranged between the tops of the opposite side walls of the two protruding rings and the outer wall of the inner ring. The curvature of the two arcuate ring grooves is slightly greater than 180 degrees. Two groups of spherical rollers are fully loaded in the two arcuate ring grooves respectively. The outer ring is sleeved on the outside of the two groups of spherical rollers. The outer edges of the two groups of spherical rollers are in contact with the inner wall of the outer ring. The outer edge surfaces of the two protruding rings and the corners of the two protruding rings facing the back are clearance-matched with the inner wall of the outer ring.
[0006] The sealed spherical roller bearing has notches at the mouths of the two arc-shaped ring grooves located at the outer edges of the two protruding rings.
[0007] In the sealed spherical roller bearing, the inner ring inner wall of the inner ring is an annular plane structure.
[0008] In the sealed spherical roller bearing, chamfered transitions are respectively arranged between the inner ring inner wall of the inner ring and the two end surfaces of the inner ring.
[0009] The sealed spherical roller bearing has an outer ring outer wall of an outer ring of a ring-shaped plane structure.
[0010] In the sealed spherical roller bearing, chamfered transitions are respectively arranged between the outer ring outer wall of the outer ring and the two end surfaces of the outer ring.
[0011] The sealed spherical roller bearing has an inclination angle between two sides of the arc-shaped annular groove of 25 to 35 degrees.
[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:
[0013] The sealed spherical roller bearing described in the utility model increases the contact surface between the spherical roller and the inner ring by setting the traditional drum roller as a spherical roller and fully filling the spherical roller in the two arc-shaped ring grooves provided on the inner ring. The two protruding rings provided on the inner ring are both matched with the inner wall of the outer ring in a clearance, ensuring that the bearing oil is not easily thrown out, thereby achieving the purpose of increasing the load and lubrication of the spherical roller. The utility model is simple and practical, has strong adaptability, and effectively prolongs the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a three-dimensional structural schematic diagram of the outer ring of the utility model;
[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the inner ring of the utility model.
[0017] In the figure: 1. Outer wall of outer ring; 2. Outer ring; 3. Inner wall of outer ring; 4. Outer wall of inner ring; 5. Inner ring; 6. Inner wall of inner ring; 7. Arc ring groove; 8. Spherical roller; 9. Protruding ring; 10. Notch. DETAILED DESCRIPTION
[0018] The present invention can be explained in more detail through the following embodiments. The present invention is not limited to the following embodiments. The purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention.
[0019] Combined with Figures 1 to 3The sealed spherical roller bearing comprises an outer ring 2, spherical rollers 8 and an inner ring 5. The inner ring inner wall 3 of the outer ring 2 is spherical. Protruding rings 9 are respectively provided at both ends of the inner ring outer wall 4 of the inner ring 5. Inclined arcuate annular grooves 7 are provided between the tops of the opposite side walls of the two protruding rings 9 and the inner ring outer wall 4. The arcs of the two arcuate annular grooves 7 are slightly greater than 180 degrees. Two groups of spherical rollers 8 are respectively fully loaded in the two arcuate annular grooves 7. The outer ring 2 is sleeved on the outside of the two groups of spherical rollers 8. The outer edges of the two groups of spherical rollers 8 are in contact with the inner ring inner wall 3. The two protruding rings 9 are arranged on the outer ring 3 of the outer ring 2. The outer edge surface of 9 and the corners of the two protruding rings 9 facing the back are both clearance-matched with the inner wall 3 of the outer ring. Notches 10 are provided at the mouths of the two arcuate annular grooves 7 located at the outer edges of the two protruding rings 9. The inner ring inner wall 6 of the inner ring 5 is an annular plane structure. Chamfered transitions are respectively provided between the inner ring inner wall 6 of the inner ring 5 and the two end surfaces of the inner ring 5. The outer ring outer wall 1 of the outer ring 2 is an annular plane structure. Chamfered transitions are respectively provided between the outer ring outer wall 1 of the outer ring 2 and the two end surfaces of the outer ring 2. The inclination angles on both sides of the notch of the arcuate annular groove 7 are 25 to 35 degrees respectively.
[0020] When implementing the sealed spherical roller bearing described in the utility model, the outer ring 2 is sleeved on the outside of the inner ring 5, and the inner ring 5 is rotated so that part of the arcuate ring groove 7 is located outside the outer ring 2. The spherical rollers 8 that match the two arcuate ring grooves 7 are fully coated with bearing oil, and the two groups of spherical rollers 8 are sequentially installed into the two arcuate ring grooves 7 from the two notches 10. The inner ring 5 is rotated so that the inner ring 5 is completely placed in the outer ring 2. At this time, the outer edge surfaces of the two protruding rings 9 and the corners of the two protruding rings 9 facing the back are both clearance-matched with the inner wall 3 of the outer ring, and the assembly is completed.
[0021] The parts not described in detail in this utility model are prior art.
Claims
1. A sealed spherical roller bearing, characterized by: The invention comprises an outer ring (2), spherical rollers (8) and an inner ring (5). The inner wall (3) of the outer ring (2) is spherical. Protruding rings (9) are respectively provided at both ends of the inner ring outer wall (4) of the inner ring (5). Inclined arcuate annular grooves (7) are provided between the tops of the two opposite side walls of the two protruding rings (9) and the inner ring outer wall (4). The arcs of the two arcuate annular grooves (7) are slightly greater than 180 degrees. Two groups of spherical rollers (8) are respectively fully loaded in the two arcuate annular grooves (7). The outer ring (2) is sleeved on the outside of the two groups of spherical rollers (8). The outer edges of the two groups of spherical rollers (8) are in contact with the inner wall (3) of the outer ring. The outer edge surfaces of the two protruding rings (9) and the corners of the two protruding rings (9) facing the back are both clearance-matched with the inner wall (3) of the outer ring.
2. The sealed spherical roller bearing according to claim 1 is characterized in that: The mouths of the two arc-shaped annular grooves (7) located at the outer edges of the two protruding rings (9) are both provided with notches (10).
3. The sealed spherical roller bearing according to claim 1, characterized in that: The inner ring inner wall (6) of the inner ring (5) is an annular plane structure.
4. The sealed spherical roller bearing according to claim 3 is characterized in that: Chamfered transitions are provided between the inner ring inner wall (6) of the inner ring (5) and the two end surfaces of the inner ring (5).
5. The sealed spherical roller bearing according to claim 1, characterized in that: The outer ring outer wall (1) of the outer ring (2) is an annular plane structure.
6. The sealed spherical roller bearing according to claim 5, characterized in that: Chamfered transitions are provided between the outer ring outer wall (1) of the outer ring (2) and the two end surfaces of the outer ring (2).
7. The sealed spherical roller bearing according to claim 1, characterized in that: The inclination angles between the two sides of the arc-shaped annular groove (7) are respectively 25 to 35 degrees.