Double-row angular contact bearing capable of long-acting lubrication
By designing a clearance fit between the protruding ring and the outer wall of the inner ring, combined with the setting of the oil reservoir ring, a closed lubrication system is formed, which solves the problem of insufficient lubrication in traditional bearings and achieves long-term lubrication and improved load-bearing capacity.
Patent Information
- Application Number
- CN202520310098.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Traditional double-row angular contact bearings suffer from insufficient lubrication, causing the spherical rollers to lose lubrication. This necessitates frequent addition of bearing oil, and the lubricant is prone to loss.
The design incorporates a clearance fit protruding ring and an inner ring outer wall, with an oil reservoir ring positioned within the ring groove. The bearing oil stored within the oil reservoir ring continuously lubricates the spherical rollers, forming a closed lubrication system through an arc transition into contact with the spherical rollers.
This achieves long-term lubrication of the bearing, reduces lubricant loss and replenishment frequency, improves load-bearing capacity, and reduces roller oscillation.
Smart Images
Figure CN223578527U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a double row angular contact bearing, especially a double row angular contact bearing capable of long-acting lubrication. BACKGROUND
[0002] The double row angular contact ball bearing can bear the radial and axial combined load and torque load mainly by the large radial load, and limits the axial displacement of the shaft in two directions. The tilting angle between the inner and outer rings of the double row angular contact ball bearing is limited, and the allowed tilting angle depends on the internal clearance of the bearing, the bearing size, the internal design and the force and torque acting on the bearing. The maximum allowed tilting angle should ensure that the additional stress in the bearing is not too high. The traditional double row angular contact bearing uses a retainer, which makes the contact surface between the spherical roller and the outer ring and the inner ring too small, and there is a large gap between the outer ring and the inner ring. The added bearing oil is easy to lose, which causes the spherical roller to lose lubrication and swing too much. In order to lubricate, the bearing oil needs to be added continuously. SUMMARY
[0003] In order to overcome the deficiencies in the background art, the utility model discloses a double row angular contact bearing capable of long-acting lubrication. The convex ring A and the inner wall of the outer ring are set as a clearance fit, the two convex rings B and the inner wall of the outer ring are set as a clearance fit, and the oil storage ring is arranged in the ring groove A. The bearing oil stored in the oil storage ring continuously lubricates the spherical roller, effectively seals the raceway of the utility model and continuously lubricates.
[0004] In order to achieve the purpose of the application, the utility model adopts the following technical scheme:
[0005] A double row angular contact bearing capable of long-acting lubrication, comprising an outer ring, a spherical roller, a half inner ring and a sleeve ring, wherein a convex ring A is arranged in the middle of the inner wall of the outer ring, an arc-shaped transition A is arranged at the intersection between the convex ring A and the inner wall of the outer ring on the opposite sides, a half ring groove is arranged at one end of the outer wall of the half inner ring, a convex ring B is arranged at the other end of the outer wall of the half inner ring, an arc-shaped transition B is arranged at the intersection between the convex ring B and the outer wall of the half inner ring on the side close to the half ring groove, a ring groove A is arranged in the middle of the outer wall of the sleeve ring, the half inner ring is two, the two half inner rings are oppositely buckled in the outer ring to form an inner ring, the outer walls of the two half inner rings are in contact to form an inner wall of the inner ring, the two half ring grooves are in contact to form a ring groove B, the sleeve ring is sleeved in the ring groove B, an oil storage ring is arranged in the ring groove A, and the two annular spaces formed between the two arc-shaped transitions A and the two arc-shaped transitions B are respectively filled with spherical rollers in a head-to-tail manner, so that one side of each spherical roller is in contact with the arc-shaped transition A, and the other side of each spherical roller is in contact with the arc-shaped transition B.
[0006] The outer edge surface of the convex ring A and the inner wall of the outer ring are in clearance fit.
[0007] The outer edge surface of the two convex rings B and the inner wall of the outer ring are in clearance fit.
[0008] The curvature of the arc transition A and the arc transition B is the same as that of the spherical roller.
[0009] The sleeve ring and the ring groove B are in interference fit.
[0010] The material of the oil storage ring is oil absorbing cotton.
[0011] The application has the following beneficial effects:
[0012] The application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 It is a structural schematic view of the application;
[0014] Fig. 2 It is a structural schematic view of the outer ring of the application;
[0015] Fig. 3 It is a structural schematic view of the half inner ring of the application;
[0016] Fig. 4 It is a structural schematic view of the inner ring of the application;
[0017] Fig. 5 It is a structural schematic view of the sleeve ring of the application;
[0018] Fig. 6 It is a structural schematic view of the oil storage ring of the application.
[0019] In the figure: 1, outer ring; 2, inner wall of the outer ring; 3, arc transition A; 4, spherical roller; 5, convex ring A; 6, sleeve ring; 7, ring groove A; 8, half inner ring; 9, oil storage ring; 10, outer wall of the half inner ring; 11, arc transition B; 12, convex ring B; 13, half ring groove; 14, ring groove B. Detailed Implementation
[0020] 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.
[0021] Combined with appendix Figs. 1-6 The aforementioned long-lasting lubrication double-row angular contact bearing includes an outer ring 1, spherical rollers 4, a semi-inner ring 8, and a collar 6. A protruding ring A5 is provided in the middle of the inner wall 2 of the outer ring 1. Arc-shaped transitions A3 are provided at the junctions of the protruding ring A5 and the inner wall 2 of the outer ring 2 on opposite sides. A semi-annular groove 13 is provided at one end of the outer wall 10 of the semi-inner ring 8, and a protruding ring B12 is provided at the other end. An arc-shaped transition B11 is provided at the junction of the protruding ring B12 (close to the semi-annular groove 13) and the outer wall 10 of the semi-inner ring 8. An annular groove A7 is provided in the middle of the outer wall of the collar 6. There are two semi-inner rings 8, which are fastened together by the two ends of the outer ring 1 to form an inner ring. The outer walls 10 of the two semi-inner rings are in contact. Afterwards, the inner ring outer wall is formed. After the two halves of the annular groove 13 come into contact, an annular groove B14 is formed. The collar 6 is fitted into the annular groove B14. The collar 6 and the annular groove B14 are interference fit. An oil storage ring 9 is provided in the annular groove A7. The material of the oil storage ring 9 is oil-absorbing cotton. In the two annular spaces formed between the two arc transitions A3 and the two arc transitions B11, spherical rollers 4 are filled with each other end to end. One side of each spherical roller 4 is in contact with the arc transition A3, and the other side of each spherical roller 4 is in contact with the arc transition B11. The curvature of the arc transition A3 and the arc transition B11 are the same as the curvature of the spherical roller 4. The outer edge of the protruding ring A5 is clearance fit with the outer wall of the inner ring. The outer edge of the two protruding rings B12 is clearance fit with the inner wall 2 of the outer ring.
[0022] The double-row angular contact bearing capable of long-acting lubrication is used, one end of the collar 6 is sleeved on the half-ring groove 13 arranged on one half inner ring 8, the oil storage ring 9 is sleeved in the ring groove A7 (since the oil absorbing cotton is soft, the oil storage ring 9 can be sleeved in the ring groove A7 after being slightly stretched), the appropriate bearing oil is injected on the oil storage ring 9, the outer ring 1 is laid flat, a group of spherical rollers 4 smeared with bearing oil are filled at the arc-shaped transition A3 at one end of the top of the outer ring 1, the half inner ring 8 is inserted into the outer ring 1 from the top of the outer ring 1 according to the one end provided with the half-ring groove 13, the arc-shaped transition B11 arranged on the half inner ring 8 is contacted with the spherical roller 4, the outer ring 1 is turned over, another group of spherical rollers 4 smeared with bearing oil are filled at the other arc-shaped transition A3 at one end of the top of the outer ring 1, the other half inner ring 8 is inserted into the outer ring 1 from the top of the outer ring 1 according to the one end provided with the half-ring groove 13, the arc-shaped transition B11 arranged on the other half inner ring 8 is contacted with the other group of spherical rollers 4, the clearance fit between the convex ring A5 and the inner wall of the outer ring during the operation of the utility model effectively slows down the outflow speed of the bearing oil in the oil storage ring 9, so that the two groups of spherical rollers 4 can be long-acting lubricated, the clearance fit between the two convex rings B12 and the inner wall 2 of the outer ring effectively slows down the dissipation speed of the bearing oil during the operation of the utility model, the bearing oil stored in the oil storage ring 9 continuously lubricates the two groups of spherical rollers 4, and the purpose of effectively sealing and continuously lubricating the raceway of the utility model is achieved.
[0023] The part not described in detail in the utility model is prior art.
Claims
1. A double-row angular contact bearing capable of long-term lubrication, characterized in that: The application relates to a spherical roller bearing, which comprises an outer ring (1), spherical rollers (4), half inner rings (8) and a sleeve ring (6), wherein a convex ring A (5) is arranged in the middle of an outer ring inner wall (2) of the outer ring (1), arc-shaped transitions A (3) are arranged at the intersections between the opposite sides of the convex ring A (5) and the outer ring inner wall (2), a half ring groove (13) is arranged at one end of a half inner ring outer wall (10) of the half inner ring (8), a convex ring B (12) is arranged at the other end of the half inner ring outer wall (10) of the half inner ring (8), an arc-shaped transition B (11) is arranged at the intersection between the convex ring B (12) on the side close to the half ring groove (13) and the half inner ring outer wall (10), a ring groove A (7) is arranged in the middle of an outer wall of the sleeve ring (6), the half inner ring (8) is two, the two half inner rings (8) are buckled in the outer ring (1) from the opposite ends of the outer ring (1) to form an inner ring, the two half inner ring outer walls (10) are in contact to form an inner ring outer wall, the two half ring grooves (13) are in contact to form a ring groove B (14), the sleeve ring (6) is sleeved in the ring groove B (14), an oil storage ring (9) is arranged in the ring groove A (7), spherical rollers (4) are arranged in the two annular spaces formed between the two arc-shaped transitions A (3) and the two arc-shaped transitions B (11) in a head-to-tail mode, one side of each spherical roller (4) is in contact with the arc-shaped transition A (3), and the other side of each spherical roller (4) is in contact with the arc-shaped transition B (11).
2. The long-life lubricated double-row angular contact bearing of claim 1, wherein: The outer edge surface of the convex ring A (5) is in clearance fit with the inner ring outer wall.
3. The long-life lubricated double-row angular contact bearing of claim 1, wherein: The outer edge surfaces of the two convex rings B (12) are in clearance fit with the outer ring inner wall (2).
4. The long-life lubricated double-row angular contact bearing of claim 1, wherein: The curvatures of the arc-shaped transitions A (3) and the arc-shaped transitions B (11) are the same as the curvature of the spherical rollers (4).
5. The long-life lubricated double-row angular contact bearing of claim 1, wherein: The sleeve ring (6) and the ring groove B (14) are in interference fit.
6. The long-life lubricated double-row angular contact bearing of claim 1, wherein: The material of the oil storage ring (9) is oil-absorbing cotton.