Double-row angular contact bearing with self-sealing lubricating function
By setting a clearance-fitting protruding ring and an oil reservoir ring in a double-row angular contact bearing, a closed lubrication structure is formed, which solves the problem of lubricating oil loss and achieves high load-bearing capacity and long-term lubrication.
Patent Information
- Application Number
- CN202520309986.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Traditional double-row angular contact bearings are prone to lubricant loss during use, requiring frequent replenishment, and they cannot effectively seal the raceway, affecting the bearing's lubrication performance and load-bearing capacity.
A clearance-fitting protruding ring and an oil reservoir ring are installed between the outer and inner rings of the bearing. The bearing oil stored in the oil reservoir ring continuously lubricates the spherical rollers, and a closed lubrication structure is formed through the arc transition and the contact between the spherical rollers.
It achieves the self-sealing lubrication function of the bearing, reduces the loss of lubricating oil, improves the load-bearing capacity and prolongs the lubrication effect, reduces oscillation, and ensures the long-term operation of the bearing.
Smart Images
Figure CN223594738U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a double row angular contact bearing, especially a double row angular contact bearing with self-sealing lubrication function. 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 can cause a large gap between the outer ring and the inner ring, and the added bearing oil is easy to lose, causing the spherical rollers 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 with self-sealing lubrication function, which is characterized by the following technical solutions: the gap fit is arranged between the two sides of the slot opening of the ring groove B and the inner wall of the outer ring, the gap fit is arranged between the two convex rings B and the outer wall of the inner ring, the oil storage ring is arranged in the ring groove B, and the bearing oil stored in the oil storage ring is used to continuously lubricate the spherical rollers.
[0004] In order to achieve the purpose of the application, the utility model adopts the following technical solutions:
[0005] A double row angular contact bearing with self-sealing lubrication function, comprising an outer ring, spherical rollers and an inner ring, a convex ring B is arranged on the inner wall of the outer ring at one end of the outer ring, a ring groove A is arranged on the end face at the other end of the outer ring, an arc-shaped transition B is arranged at the junction of the convex ring B and the inner wall of the outer ring on the side close to the ring groove A, a convex ring A is arranged in the middle of the outer wall of the inner ring, a ring groove B is arranged in the middle of the outer edge face of the convex ring A, an oil storage ring is arranged in the ring groove B, arc-shaped transitions A are arranged at the junctions of the opposite sides of the convex ring A and the outer wall of the inner ring, the outer ring is two, the two outer rings are oppositely buckled on the outside of the outer ring by the two ends of the inner ring, the end faces of the other ends of the two outer rings are in contact, the two ring grooves A form a connecting cavity after being in contact, a connecting ring is arranged in the connecting cavity, spherical rollers are filled in the two annular spaces formed between the two arc-shaped transitions A and the two arc-shaped transitions B 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 B on one side of the slot B and the inner wall of one of the outer rings are in clearance fit, and the outer edge surface of the convex ring B on the other side of the slot B and the inner wall of the other outer ring are in clearance fit.
[0007] The outer edge surface of the convex ring B on one side of the slot B and the inner wall of one of the outer rings are in clearance fit, and the outer edge surface of the convex ring B on the other side of the slot B and the inner wall of the other outer ring are in clearance fit.
[0008] The curvature of the arc transition A and the arc transition B are similar to the curvature of the spherical roller.
[0009] The connecting ring and the connecting cavity are in interference fit.
[0010] The material of the oil storage ring is oil absorbing cotton.
[0011] The technical scheme has the following beneficial effects:
[0012] The two outer edges of the slot B and the inner wall of the two outer rings are in clearance fit, the two convex rings B and the outer wall of the inner ring are in clearance fit, and the oil storage ring is arranged in the slot B, so that the spherical roller is continuously lubricated by the bearing oil stored in the oil storage ring, the raceway is effectively closed and continuously lubricated, the bearing has the characteristics of high load capacity and long-term lubrication, and the swing during use is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 The figure is a structural schematic diagram of the utility model;
[0014] Fig. 2 The figure is a structural schematic diagram of the utility model outer ring;
[0015] Fig. 3 The figure is a structural schematic diagram of the utility model inner ring;
[0016] Fig. 4 The figure is a structural schematic diagram of the utility model connecting ring;
[0017] Fig. 5 The figure is a structural schematic diagram of the utility model oil storage ring.
[0018] In the figure: 1, connecting ring; 2, outer ring; 3, oil storage ring; 4, spherical roller; 5, convex ring A; 6, inner ring; 7, inner ring outer wall; 8, arc transition A; 9, arc transition B; 10, ring groove A; 11, convex ring B; 12, outer ring inner wall; 13, ring groove B. DETAILED DESCRIPTION
[0019] The utility model can be explained in more detail by the following examples, and the utility model is not limited to the following examples, and the purpose of disclosing the utility model is to protect all changes and improvements within the scope of the utility model;
[0020] In combination with the drawings Figs. 1-5 The double-row angular contact bearing with self-sealing lubrication function comprises an outer ring 2, a spherical roller 4 and an inner ring 6, a convex ring B 11 is arranged on the outer ring inner wall 12 of one end of the outer ring 2, a ring groove A 10 is arranged on the end face of the other end of the outer ring 2, an arc transition B 9 is arranged at the junction of the convex ring B 11 and the outer ring inner wall 12 on the side close to the ring groove A 10, a convex ring A 5 is arranged in the middle of the inner ring outer wall 7 of the inner ring 6, a ring groove B 13 is arranged in the middle of the outer edge face of the convex ring A 5, an oil storage ring 3 is arranged in the ring groove B 13, the material of the oil storage ring 3 is oil-absorbing cotton, arc transitions A 8 are arranged at the junctions of the opposite sides of the convex ring A 5 and the inner ring outer wall 7, the outer ring 2 is two, the two outer rings 2 are oppositely buckled outside the outer ring 2 from the two ends of the inner ring 6, the end faces of the other ends of the two outer rings 2 are in contact, the two ring grooves A 10 form a connecting cavity after being in contact, a connecting ring 1 is arranged in the connecting cavity, the connecting ring 1 and the connecting cavity are in interference fit, spherical rollers 4 are filled in the two annular spaces formed between the two arc transitions A 8 and the two arc transitions B 9 in a head-to-tail manner, one side of each spherical roller 4 is in contact with the arc transition A 8, the other side of each spherical roller 4 is in contact with the arc transition B 9, the curvatures of the arc transition A 8 and the arc transition B 9 are the same as the curvature of the spherical roller 4, the outer edge faces of the two convex rings B 11 are in clearance fit with the inner ring outer wall 7, the outer edge face of the convex ring A 5 on one side of the ring groove B 13 is in clearance fit with the outer ring inner wall 12 of one of the outer rings 2, and the outer edge face of the convex ring A 5 on the other side of the ring groove B 13 is in clearance fit with the outer ring inner wall 12 of the other outer ring 2.
[0021] The double-row angular contact bearing with self-closing lubricating function has the following advantages that when in use, one outer ring 2 is laid horizontally with the ring groove A10 upward, one end of the connecting ring 1 is inserted into the ring groove A10 provided in the outer ring 2, a group of spherical rollers 4 coated with bearing oil are filled at the arc-shaped transition B9 of the outer ring 2, the oil storage ring 3 is sleeved in the ring groove B13 (as the oil absorbing cotton is soft, the oil storage ring 3 can be slightly stretched and then sleeved in the ring groove B13), an appropriate amount of bearing oil is injected into the oil storage ring 3, one end of the inner ring 6 is inserted into the outer ring 2, the arc-shaped transition A8 provided at the lower part of the inner ring 6 is in contact with the group of spherical rollers 4, another group of spherical rollers 4 coated with bearing oil are filled at the arc-shaped transition A8 provided at the upper part of the inner ring 6, another outer ring 2 is sleeved outside the inner ring 6 with the ring groove A10 downward, the other end of the connecting ring 1 is inserted into the ring groove A10 provided in the other outer ring 2, the arc-shaped transition B9 provided in the other outer ring 2 is in contact with the other group of spherical rollers 4, the ring grooves A10 provided in the two outer rings 2 are in contact, the gap cooperation between the outer edge surface of the protruding ring A5 located at one side of the ring groove B13 and the inner wall 12 of one of the outer rings 2, and the gap cooperation between the outer edge surface of the protruding ring A5 located at the other side of the ring groove B13 and the inner wall 12 of the other outer ring 2 effectively slow down the outflow speed of the bearing oil in the oil storage ring 3, so that the two groups of spherical rollers 4 can be effectively lubricated, the gap cooperation between the outer edge surfaces of the two protruding rings B11 and the outer wall 7 of the inner ring 7 effectively slows down the loss speed of the bearing oil when the double-row angular contact bearing with self-closing lubricating function runs, the bearing oil stored in the oil storage ring 3 continuously lubricates the two groups of spherical rollers 4, and the raceway of the double-row angular contact bearing with self-closing lubricating function is effectively closed and continuously lubricated.
[0022] The part not described in the utility model is prior art.
Claims
1. A double-row angular contact bearing having a self-sealing lubrication function, characterized in that: The application relates to a spherical roller bearing, which comprises an outer ring (2), spherical rollers (4) and an inner ring (6), wherein a convex ring B (11) is arranged on the inner wall (12) of the outer ring (2) at one end, a ring groove A (10) is arranged on the end face of the other end of the outer ring (2), an arc-shaped transition B (9) is arranged at the joint of the convex ring B (11) and the inner wall (12) on the side close to the ring groove A (10), a convex ring A (5) is arranged in the middle of the outer wall (7) of the inner ring (6), a ring groove B (13) is arranged in the middle of the outer edge face of the convex ring A (5), an oil storage ring (3) is arranged in the ring groove B (13), arc-shaped transitions A (8) are arranged at the joints of the convex ring A (5) and the outer wall (7) on the opposite sides, the outer ring (2) is provided with two outer rings (2), the two outer rings (2) are oppositely buckled on the outside of the outer ring (2) by the two ends of the inner ring (6), the end faces of the other ends of the two outer rings (2) are in contact, the two ring grooves A (10) are connected to form a connecting cavity, a connecting ring (1) is arranged in the connecting cavity, spherical rollers (4) are arranged in the two annular spaces formed between the two arc-shaped transitions A (8) and the two arc-shaped transitions B (9) in a first-end-to-last-end mode, and one side of each spherical roller (4) is in contact with the arc-shaped transition A (8), and the other side of each spherical roller (4) is in contact with the arc-shaped transition B (9).
2. The double-row angular contact bearing with self-sealing lubrication function according to claim 1, characterized in that: The outer edge faces of the two convex rings B (11) are in clearance fit with the outer wall (7) of the inner ring.
3. The double-row angular contact bearing with self-sealing lubrication function according to claim 1, characterized in that: The outer edge face of the convex ring A (5) on one side of the ring groove B (13) is in clearance fit with the inner wall (12) of one of the outer rings (2), and the outer edge face of the convex ring A (5) on the other side of the ring groove B (13) is in clearance fit with the inner wall (12) of the other outer ring (2).
4. The double-row angular contact bearing with self-sealing lubrication function according to claim 1, characterized in that: The curvatures of the arc-shaped transitions A (8) and B (9) are the same as that of the spherical rollers (4).
5. The double-row angular contact bearing with self-sealing lubrication function according to claim 1, characterized in that: The connecting ring (1) and the connecting cavity are in interference fit.
6. The double-row angular contact bearing with self-sealing lubrication function according to claim 1, characterized in that: The material of the oil storage ring (3) is oil-absorbing cotton.