Asymmetric angular contact ball bearing

Abstract

The utility model relates to the technical field of bearings, in particular to an asymmetric angular contact ball bearing, which is characterized in that a seam of an outer raceway of the asymmetric angular contact ball bearing is blocked by an outer steel ring, so that the outer raceway of an integral outer ring is smooth, the abrasion of rolling body steel balls is reduced, and the reliability is improved; the bearing further comprises an inner ring, a first outer ring, a second outer ring, a plurality of balls and a retainer, an inner raceway is arranged on the outer wall of the inner ring, the first outer ring and the second outer ring form an integral outer ring, an outer raceway is arranged on the inner wall of the integral outer ring, and the balls are installed between the inner raceway and the outer raceway in a rolling mode. The retainer is positioned between the inner ring and the integral outer ring formed by the first outer ring and the second outer ring; the bearing further comprises an outer steel ring, an outer raceway of the whole outer ring formed by the first outer ring and the second outer ring expands outwards, the outer steel ring is installed in the space where the outer raceway expands outwards, the inner wall of the outer steel ring is provided with a second outer raceway matched with the balls, and the second outer raceway of the outer steel ring is in rolling contact with the balls.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bearing, in particular to a kind of asymmetric angular contact ball bearings. BACKGROUND

[0002] Angular contact ball bearing can simultaneously bear radial load and axial load, contact angle is the angle between the perpendicular line of bearing axis and the connecting line of the contact point of radial plane ball and raceway. The asymmetric four-point angular contact ball bearing of the prior art patent with publication number CN220668138U is disclosed, the asymmetric four-point angular contact ball bearing includes four-point angular contact ball bearing body, the width of the first outer ring of four-point angular contact ball bearing body is greater than the width of the second outer ring. The asymmetric four-point angular contact ball bearing provided by the utility model increases the width of the force outer ring, forms asymmetric structure, to enhance the strength of force outer ring.

[0003] But the outer ring of the above asymmetric four-point angular contact ball bearing adopts asymmetric first outer ring and second outer ring to constitute an integral outer ring, so that joint is inevitably formed at the butt joint of first outer ring and second outer ring, and the joint is in the outer raceway of rolling body steel ball, which reduces the flatness of outer raceway and causes great wear of rolling body steel ball, reducing reliability. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides an asymmetric angular contact ball bearing, the joint of outer raceway is blocked by outer steel ring, the flatness of integral outer raceway is reduced, the wear of rolling body steel ball is reduced, and the reliability is improved.

[0005] The utility model discloses an asymmetric angular contact ball bearing, still includes inner ring, first outer ring, second outer ring, a plurality of ball bearings and retainer, is provided with the inner raceway on the outer wall of inner ring, and first outer ring and second outer ring constitute integral outer ring, and is provided with the outer raceway on the inner wall of integral outer ring, and a plurality of ball bearings are installed between inner raceway and outer raceway and roll, and retainer is located between the integral outer ring of inner ring and first outer ring and second outer ring, and retainer sets up a plurality of limit hole, and retainer is positioned and supported to a plurality of ball bearings through a plurality of limit hole, still includes outer steel ring, and the outer raceway of integral outer ring of first outer ring and second outer ring constitutes outward expansion, and outer steel ring is installed in the space of the outward expansion of outer raceway, and the inner wall of outer steel ring sets up the second outer raceway matched with a plurality of ball bearings, and the second outer raceway of outer steel ring is in rolling contact with a plurality of ball bearings, outer steel ring is made of bearing steel, controls the wall thickness of outer steel ring, makes outer steel ring have certain elasticity, when assembling, inner ring is laid flat, and first outer ring is sleeved in the lower outer side of inner ring and is laid flat to make its outer raceway face upwards, and retainer is sleeved between inner ring and first outer ring and positions a plurality of ball bearings in a plurality of limit holes of retainer respectively, and the lower part of outer steel ring is embedded in the outer raceway expansion space of first outer ring, makes outer steel ring sleeve to the outer side of a plurality of ball bearings, makes the outer surface of a plurality of ball bearings and the second outer raceway of outer steel ring rolling contact, and outer steel ring holds a plurality of ball bearings on the outer side of inner ring, and the concentric installation of second outer ring on first outer ring makes the upper part of outer steel ring be embedded in the outer raceway expansion space of second outer ring, completes the assembly of bearing, and the width of first outer ring and second outer ring is different, realizes asymmetric angular contact ball bearing structure, makes the part of width increase be the weighing part, and outer steel ring is located in the expansion space of the outer raceway of the integral outer ring of first outer ring and second outer ring and forms new second outer raceway, makes the joint of first outer ring and second outer ring be blocked by outer steel ring, makes the flatness of the outer raceway of integral outer ring, avoids the collision with a plurality of ball bearings, avoids the relatively big abrasion to rolling element steel ball, improves the reliability.

[0006] Preferably, it further comprises a positioning block and a positioning groove, the positioning block is installed on the outer wall of the outer steel ring, the positioning groove is arranged on the outer raceway of the integral outer ring of the first outer ring and the second outer ring, and the positioning groove is used for positioning the positioning block; the outer steel ring is positioned through the matching of the positioning block and the positioning groove, the installation precision of the outer steel ring is improved, and the stability of the outer steel ring is improved.

[0007] Preferably, it further comprises a lubricating wheel and a rotating shaft, the retainer is provided with a mounting hole, the mounting hole is located between two limit holes, the lubricating wheel is rotatably installed in the mounting hole of the retainer through the rotating shaft, and the wheel surface of the lubricating wheel is in rolling contact with the inner raceway of the inner ring or the second outer raceway of the outer steel ring; the lubricating wheel is of a sponge structure and adsorbs lubricating oil, a plurality of lubricating wheels are arranged, a part of the lubricating wheels are in rolling contact with the inner raceway of the inner ring, and the other part of the lubricating wheels are in rolling contact with the second outer raceway of the outer steel ring, so that the lubricating oil adsorbed on the plurality of lubricating wheels lubricates the inner raceway and the second outer raceway, and the smoothness of bearing operation is improved.

[0008] Preferably, the retainer is two annular structures which are buckled and clamped, and the abutting parts of the two annular structures are provided with notches, the notches abut to form limiting holes for the balls and mounting holes for the lubricating wheels; the above structure facilitates the installation of the retainer, and the thickness of the two annular outer sides of the retainer is adjusted to fill the gaps between the inner ring and the first outer ring and between the inner ring and the second outer ring, respectively, so that the retainer forms a dust cover structure and improves reliability.

[0009] Preferably, the first outer ring and the second outer ring are concentrically installed by a plurality of bolts; the first outer ring and the second outer ring are installed by a plurality of bolts, which facilitates installation and disassembly for maintenance.

[0010] Preferably, the application further comprises a thrust ring, a plurality of balls two and a retainer two, the thrust ring is concentrically installed on the outer side of the end of the inner ring, the thrust ring is provided with an annular raceway, the annular raceway is arranged around the inner ring, the end of the first outer ring is provided with a side annular raceway, the side annular raceway is arranged opposite to the annular raceway, the plurality of balls two are rollingly installed between the side annular raceway and the annular raceway, and the retainer two is used for limiting and positioning the plurality of balls two; the thrust ring, the plurality of balls two, the retainer two and the first outer ring form a thrust bearing structure, which improves the axial stress capacity of the bearing.

[0011] Compared with the prior art, the beneficial effects of the application are as follows: the outer steel ring is made of bearing steel, the wall thickness of the outer steel ring is controlled, the outer steel ring has a certain elasticity, during assembly, the inner ring is placed horizontally, the first outer ring is sleeved on the outer side of the lower part of the inner ring and is placed horizontally so that the outer raceway faces upward, the retainer is sleeved between the inner ring and the first outer ring and positions and limits the plurality of balls in the plurality of limiting holes of the retainer, the lower part of the outer steel ring is embedded in the outer raceway expansion space of the first outer ring, the outer steel ring is sleeved on the outer side of the plurality of balls, the outer surface of the plurality of balls is in rolling contact with the second outer raceway of the outer steel ring, the outer steel ring holds the plurality of balls on the outer side of the inner ring, the second outer ring is concentrically installed on the first outer ring, the upper part of the outer steel ring is embedded in the outer raceway expansion space of the second outer ring, the assembly of the bearing is completed, the widths of the first outer ring and the second outer ring are different, the asymmetric angular contact ball bearing structure is realized, the part with increased width is the weighting part, the outer steel ring is located in the expansion space of the outer raceway of the whole outer ring of the first outer ring and the second outer ring to form a new second outer raceway, the joint of the first outer ring and the second outer ring is blocked by the outer steel ring, the outer raceway of the whole outer ring is flat, collision between the plurality of balls and the outer raceway is avoided, the rolling element steel balls are not easily worn, and reliability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic view of the application;

[0013] Figure 2Is the side section structure schematic diagram of the utility model;

[0014] Figure 3 Is the front section structure schematic diagram of the utility model;

[0015] Figure 4 Is the isometric structure schematic diagram of the utility model;

[0016] Figure 5 Is the structure schematic diagram of the exploded state of the utility model;

[0017] Figure 6 Is the structure schematic diagram of the exploded state of the first outer ring, second outer ring, outer steel ring and positioning block structure;

[0018] Figure 7 Is the structure schematic diagram of the ball, retainer, lubricating wheel and rotating shaft structure.

[0019] Markings in the drawings: 1, inner ring;2, first outer ring;3, second outer ring;4, ball;5, retainer;6, outer steel ring;7, positioning block;8, positioning groove;9, lubricating wheel;10, rotating shaft;11, thrust ring;12, ball two;13, retainer two. Specific implementation

[0020] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Example 1

[0022] As Figures 1 to 6As shown, the asymmetric angular contact ball bearing further comprises an inner ring 1, a first outer ring 2, a second outer ring 3, a plurality of balls 4 and a retainer 5, an inner raceway is arranged on the outer wall of the inner ring 1, the first outer ring 2 and the second outer ring 3 form a whole outer ring, an outer raceway is arranged on the inner wall of the whole outer ring, the plurality of balls 4 are rollingly installed between the inner raceway and the outer raceway, the retainer 5 is located between the inner ring 1 and the whole outer ring formed by the first outer ring 2 and the second outer ring 3, the retainer 5 is provided with a plurality of limiting holes, and the retainer 5 limits and supports the plurality of balls 4 through the plurality of limiting holes; further comprising an outer steel ring 6, the outer raceway of the whole outer ring formed by the first outer ring 2 and the second outer ring 3 is expanded outward, the outer steel ring 6 is installed in the space expanded outward by the outer raceway, the inner wall of the outer steel ring 6 is provided with a second outer raceway matched with the plurality of balls 4, and the second outer raceway of the outer steel ring 6 is in rolling contact with the plurality of balls 4; further comprising a positioning block 7 and a positioning groove 8, the positioning block 7 is installed on the outer wall of the outer steel ring 6, the outer raceway of the whole outer ring of the first outer ring 2 and the second outer ring 3 is provided with the positioning groove 8, and the positioning groove 8 is used for positioning the positioning block 7; and the first outer ring 2 and the second outer ring 3 are concentrically installed through a plurality of bolts.

[0023] The outer steel ring 6 is made of bearing steel, the wall thickness of the outer steel ring 6 is controlled, the outer steel ring 6 has a certain elasticity, in assembly, the inner ring 1 is laid flat, the first outer ring 2 is sleeved on the lower outer side of the inner ring 1 and laid flat so that the outer raceway thereof faces upward, the retainer 5 is sleeved between the inner ring 1 and the first outer ring 2 and positions and limits the plurality of balls 4 in the plurality of limiting holes of the retainer 5, the lower part of the outer steel ring 6 is embedded in the expansion space of the outer raceway of the first outer ring 2, the outer steel ring 6 is positioned through the matching of the positioning block 7 and the positioning groove 8, the installation precision of the outer steel ring 6 is improved, the stability of the outer steel ring 6 is improved, the outer steel ring 6 is sleeved to the outer side of the plurality of balls 4, the outer surface of the plurality of balls 4 is in rolling contact with the second outer raceway of the outer steel ring 6, the plurality of balls 4 are held by the outer steel ring 6 to the outer side of the inner ring 1, the first outer ring 2 and the second outer ring 3 are concentrically installed through the plurality of bolts, the upper part of the outer steel ring 6 is embedded in the expansion space of the outer raceway of the second outer ring 3, the assembly of the bearing is completed, the widths of the first outer ring 2 and the second outer ring 3 are different, the asymmetric angular contact ball bearing structure is realized, the part with increased width is a counterweight part, the outer steel ring 6 is located in the expansion space of the outer raceway of the whole outer ring of the first outer ring 2 and the second outer ring 3 to form a new second outer raceway, the joint of the first outer ring 2 and the second outer ring 3 is blocked by the outer steel ring 6, the outer raceway of the whole outer ring is flat, collision with the plurality of balls 4 is avoided, great wear of the rolling body steel balls is avoided, and the reliability is improved.

[0024] Embodiment 2

[0025] As Figure 1 , Figure 3 , Figure 5 and Figure 7As shown, based on Embodiment 1, it also includes a lubricating wheel 9 and a rotating shaft 10. The retainer 5 is provided with a mounting hole, which is located between two limiting holes. The lubricating wheel 9 is rotatably mounted in the mounting hole of the retainer 5 through the rotating shaft 10. The wheel surface of the lubricating wheel 9 rolls in contact with the inner raceway of the inner ring 1 or the second outer raceway of the outer steel ring 6. The retainer 5 consists of two annular mechanisms that are snapped together. The part where the two annular structures meet is provided with a groove. The grooves meet to form the limiting hole of the ball 4 and the mounting hole of the lubricating wheel 9.

[0026] The above structure facilitates the installation of the cage 5. The thickness of the two outer rings of the cage 5 is adjusted so that the two outer rings of the cage 5 fill the gaps between the inner ring 1 and the first outer ring 2 and between the inner ring 1 and the second outer ring 3, respectively. This makes the cage 5 a dust cover structure. The lubricating wheels 9 are sponge structures that absorb lubricating grease. Multiple lubricating wheels 9 are provided, and some of the lubricating wheels 9 roll in contact with the inner raceway of the inner ring 1, while the other part of the lubricating wheels 9 rolls in contact with the second outer raceway of the outer steel ring 6. This allows the lubricating grease absorbed on the multiple lubricating wheels 9 to lubricate the inner raceway and the second outer raceway, improving the smoothness of the bearing operation.

[0027] Example 3

[0028] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, based on Embodiment 1, it further includes a thrust ring 11, multiple balls 12, and a cage 13. The thrust ring 11 is concentrically mounted on the outer side of the end of the inner ring 1. An annular raceway is provided on the thrust ring 11, which surrounds the inner ring 1. A side annular raceway is provided at the end of the first outer ring 2, which is arranged opposite to the annular raceway. Multiple balls 12 are rolled between the side annular raceway and the annular raceway. The cage 13 is used to limit and position the multiple balls 12. The thrust ring 11, multiple balls 12, cage 13, and the first outer ring 2 constitute a thrust bearing structure, which improves the axial force capacity of the bearing.

[0029] like Figures 1 to 7As shown, the asymmetric angular contact ball bearing of the utility model, when working, first, the inner ring 1 is laid flat, the thrust ring 11 is placed on the desktop, a plurality of ball 12 is rollingly installed on the annular raceway of the thrust ring 11, the cage 13 is used for limiting and positioning a plurality of ball 12, the first outer ring 2 is sleeved on the lower outer side of the inner ring 1 and laid flat so that the outer raceway faces upward, so that the end side annular raceway of the first outer ring 2 is in rolling contact with the upper part of a plurality of ball 12, then the annular structure of the cage 5 is sleeved between the inner ring 1 and the first outer ring 2, a plurality of ball 4 and a plurality of lubricating wheels 9 are respectively loaded into the notches of the first annular structure of the cage 5, the other annular structure of the cage 5 is clamped to the first annular structure, and a plurality of ball 4 and a plurality of lubricating wheels 9 are respectively positioned and limited in a plurality of limiting holes and mounting holes of the cage 5, then the lower part of the outer steel ring 6 is embedded in the outer raceway expansion space of the first outer ring 2, the positioning block 7 and the positioning groove 8 cooperate to position the outer steel ring 6, the outer steel ring 6 is sleeved to the outer side of a plurality of ball 4, so that the outer surface of a plurality of ball 4 is in rolling contact with the second outer raceway of the outer steel ring 6, and the outer steel ring 6 holds a plurality of ball 4 on the outer side of the inner ring 1, finally, the second outer ring 3 is concentrically installed on the first outer ring 2, so that the upper part of the outer steel ring 6 is embedded in the outer raceway expansion space of the second outer ring 3, and the assembly of the bearing is completed.

[0030] The main functions realized by the utility model are as follows:

[0031] 1. The width of the first outer ring 2 and the second outer ring 3 is different, the asymmetric angular contact ball bearing structure is realized, and the part with increased width is the weighting part;

[0032] 2. The joint of the outer raceway is blocked by the outer steel ring 6, the outer raceway of the whole outer ring is flat, the wear of the rolling element steel ball is reduced, and the reliability is improved;

[0033] 3. The lubricating oil smearing structure is arranged to lubricate the raceway, and the smoothness of the bearing operation is improved;

[0034] 4. The thrust bearing structure is additionally arranged, and the axial stress capacity of the bearing is improved.

[0035] The asymmetric angular contact ball bearing of the utility model is installed, connected or arranged in the common mechanical mode, as long as the beneficial effects can be achieved, and the implementation can be carried out; the inner ring 1, the first outer ring 2, the second outer ring 3, the ball 4, the cage 5, the lubricating wheel 9, the rotating shaft 10, the ball 12 and the cage 13 of the asymmetric angular contact ball bearing of the utility model are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0036] All the technical and scientific terms used herein have the same meanings as those commonly understood by the person skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0037] The above is only the preferred embodiment of the present application, and it should be pointed out that for the person skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. An asymmetric angular contact ball bearing, further comprising an inner ring (1), a first outer ring (2), a second outer ring (3), a plurality of balls (4) and a retainer (5), an inner raceway is arranged on the outer wall of the inner ring (1), the first outer ring (2) and the second outer ring (3) constitute a whole outer ring, an outer raceway is arranged on the inner wall of the whole outer ring, the plurality of balls (4) are rollingly installed between the inner raceway and the outer raceway, the retainer (5) is located between the inner ring (1) and the whole outer ring constituted by the first outer ring (2) and the second outer ring (3), the retainer (5) is provided with a plurality of limiting holes, and the retainer (5) limits and supports the plurality of balls (4) through the plurality of limiting holes; characterized in that, It also includes an outer steel ring (6), the outer race of the whole outer ring composed of the first outer ring (2) and the second outer ring (3) is expanded outward, the outer steel ring (6) is installed in the space expanded outward by the outer race, the inner wall of the outer steel ring (6) is provided with a second outer race matched with the plurality of balls (4), and the second outer race of the outer steel ring (6) is in rolling contact with the plurality of balls (4).

2. A non-symmetrical angular contact ball bearing as claimed in claim 1, characterized in that It also includes positioning blocks (7) and positioning grooves (8), the positioning blocks (7) are installed on the outer wall of the outer steel ring (6), the positioning grooves (8) are arranged on the outer race of the whole outer ring of the first outer ring (2) and the second outer ring (3), and the positioning grooves (8) are used for positioning the positioning blocks (7).

3. A non-symmetrical angular contact ball bearing as claimed in claim 1, wherein, It also includes a lubricating wheel (9) and a rotating shaft (10), the retaining ring (5) is provided with a mounting hole between the two limiting holes, the lubricating wheel (9) is rotatably installed in the mounting hole of the retaining ring (5) through the rotating shaft (10), and the wheel surface of the lubricating wheel (9) is in rolling contact with the inner race (1) or the second outer race of the outer steel ring (6).

4. A non-symmetrical angular contact ball bearing as claimed in claim 3, wherein, The retaining ring (5) is two annular mechanisms connected by buckling, the abutting part of the two annular mechanisms is provided with a notch, and the notches are abutted to form the limiting hole of the ball (4) and the mounting hole of the lubricating wheel (9).

5. A non-symmetrical angular contact ball bearing as claimed in claim 1, wherein, The first outer ring (2) and the second outer ring (3) are concentrically installed by a plurality of bolts.

6. A non-symmetrical angular contact ball bearing as claimed in claim 1, wherein, It also includes a thrust ring (11), a plurality of balls (12) and a retaining ring (13), the thrust ring (11) is concentrically installed outside the end of the inner race (1), the thrust ring (11) is provided with an annular raceway, the annular raceway is arranged around the inner race (1), the end of the first outer ring (2) is provided with a side annular raceway, the side annular raceway is arranged opposite to the annular raceway, the plurality of balls (12) are rotatably installed between the side annular raceway and the annular raceway, and the retaining ring (13) is used for limiting and positioning the plurality of balls (12).

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