CN214196950U

CN214196950U - Outer ring-guided shaft-connected double-row angular contact roller bearing

Info

Publication number: CN214196950U
Application number: CN202023331254.1U
Authority: CN
Inventors: 陈庆熙; 王冰; 赵荣多; 陈太平; 李洁梅; 刘静; 刘双喜; 吴明
Original assignee: Tcb Bearing Manufacturing Co ltd
Current assignee: Tcb Bearing Manufacturing Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-14
Anticipated expiration: 2030-12-30

Abstract

The invention discloses an outer ring-guided shaft-connected double-row angular contact roller bearing which at least comprises an outer ring, an inner ring and two rows of rolling bodies arranged between the outer ring and the inner ring, wherein an included angle formed by a connecting line of the centers of the rolling bodies and contact points of annular channels of the inner ring and the outer ring and a radial plane of the bearing is a contact angle beta, a guide groove which extends inwards along the radial direction of the outer ring and is used for being matched with a guide rail in a rolling way is arranged on the outer surface of the outer ring, the guide groove comprises a left cambered surface and a right cambered surface which are crossed mutually and have the same curvature radius, the joint of the left cambered surface and the right cambered surface is in arc transition, and the left cambered surface and the right cambered surface are tangent to the guide rail when the guide groove is matched with the guide rail in a rolling way. The left cambered surface and the right cambered surface are arranged, so that the axial stability of guiding is improved, and the rigidity of the support is improved; wherein, the bearing can bear large axial load and overturning moment through double-row angular contact.

Description

Outer ring-guided shaft-connected double-row angular contact roller bearing

[ technical field ] A method for producing a semiconductor device

The application relates to a roller, in particular to an outer ring-guided shaft-connection double-row angular contact roller bearing.

[ background of the invention ]

The guide roller is a roller matched with the guide rail. The guide groove of the existing guide roller is tangent to the single point of the guide rail, and the axial stability and the supporting rigidity are not ideal.

[ summary of the invention ]

The invention provides an outer ring-guided shaft-connected double-row angular contact roller bearing aiming at the defects of the existing guide roller, which at least comprises an outer ring, an inner ring and two rows of rolling bodies arranged between the outer ring and the inner ring, wherein the included angle formed by the connecting line of the centers of the rolling bodies and the contact points of the annular channels of the inner ring and the outer ring and the radial plane of the bearing is a contact angle beta, the outer surface of the outer ring is provided with a guide groove which extends inwards along the radial direction of the outer ring and is used for being matched with a guide rail in a rolling way, the guide groove comprises a left cambered surface and a right cambered surface which are mutually crossed and have the same curvature radius, the joint of the left cambered surface and the right cambered surface is in arc transition, and the left cambered surface and the right cambered surface are tangent to the guide rail when the guide groove is matched with the guide rail in a rolling way.

As an improvement of the above outer ring guide type shaft-connected double-row angular contact roller bearing, the inner ring is a shaft-connected inner ring with a central bolt hole, and a bolt hole shaft is arranged on the axial right side of the inner ring.

As an improvement of the above-mentioned outer ring guided double row angular contact roller bearing, the contact angle β is: 20 to 30 degrees.

As an improvement of the outer ring guide double-row axial angular contact roller bearing, a first dustproof structure is arranged on the axial left side of the inner ring, and a second dustproof structure is arranged on the axial right side of the inner ring.

As an improvement of the outer ring-guided double-row angular contact roller bearing, the first dust-proof structure comprises an annular dust-proof check ring which is embedded and matched with the outer ring, and a dust-proof cover which is connected with the dust-proof check ring in a buckling manner.

As an improvement of the above outer ring guide double row axial contact angular contact roller bearing, the dust-proof retainer ring includes a base portion parallel to a radial plane of the bearing and a connecting portion provided on the base portion and caulked to the outer ring.

As an improvement of the above outer ring guided double row angular contact roller bearing, the second dust prevention structure includes a seal ring disposed between the outer ring and the inner ring.

As an improvement of the above outer ring guided double row angular contact roller bearing, the sealing ring includes a fixture block fitted in the outer ring and a sealing lip elastically abutting against the inner ring.

Compared with the prior art, the invention has the following advantages:

the invention provides an outer ring-guided shaft-connected double-row angular contact roller bearing, which comprises an outer ring and a guide groove arranged on the outer ring, wherein the guide groove comprises a left cambered surface and a right cambered surface which are intersected with each other and have the same curvature radius, the joint of the left cambered surface and the right cambered surface adopts circular arc transition to avoid stress concentration, and the left cambered surface and the right cambered surface are tangent to a guide rail when the guide groove is in rolling fit with the guide rail.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic structural view of an outer ring guided double row angular contact roller bearing of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a schematic diagram of the outer ring guided double row angular contact roller bearing of the present application in rolling engagement with a guide rail;

fig. 5 is a partially enlarged view of C in fig. 4.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1-4, the outer ring-guided double-row angular contact roller bearing includes at least an outer ring 1, an inner ring 2, and two rows of rolling elements 3 disposed between the outer ring 1 and the inner ring 2, an included angle formed by a connection line of centers of the rolling elements 3 and contact points of annular channels of the inner and outer rings and a radial plane of the bearing is a contact angle β, a guide groove 4 extending inward along a radial direction of the outer ring 1 and adapted to be in rolling fit with a guide rail 100 is disposed on an outer surface of the outer ring 1, the guide groove 4 includes a left arc surface 42 and a right arc surface 43 which are crossed and have the same curvature radius, a connection part between the left arc surface 42 and the right arc surface 43 is in arc transition, and the left arc surface 42 and the right arc surface 43 are tangent to the guide rail when the guide groove 4 is in rolling fit with the guide rail. The joint of the left cambered surface 42 and the right cambered surface 43 adopts arc transition to avoid stress concentration, wherein the arrangement of the left cambered surface 42 and the right cambered surface 43 improves the axial stability of guiding and simultaneously improves the rigidity of supporting; wherein, the bearing can bear large axial load and overturning moment through double-row angular contact.

Further, as a preferred embodiment of the present invention, but not limited thereto, the plurality of arc surfaces 41 includes a left arc surface 42 and a right arc surface 43 which are sequentially connected in the axial direction of the outer ring 1. As can be seen, the guide rail 100 is tangent to the left arc surface 42 and the right arc surface 43. This construction improves the axial stability of the guide and at the same time improves the rigidity of the bearing.

Further, as a preferred embodiment of the present invention, but not limited thereto, the inner ring 2 is a shaft coupling inner ring with a central bolt hole, and the bolt hole shaft 5 is provided on the right side in the axial direction of the inner ring 2. Through the bolt hole shaft 5 on the shaft connection inner ring 2, the bearing can be quickly and easily installed on equipment.

Further, as a preferred embodiment of the present invention, but not limited thereto, the inner ring is a shaft coupling inner ring with a central bolt hole, and when the shaft coupling inner ring is installed, a fastening screw is fastened with the shaft coupling inner ring through the central bolt hole.

Further, as a preferred embodiment of the present invention, but not limited thereto, the magnitude of the contact angle β is: 20 ° to 30 °, preferably, the contact angle β is 25 °. The structure ensures that the bearing can bear large axial load and overturning moment.

Further, as a preferred embodiment of the present invention, but not limited thereto, a first dustproof structure 20 is provided on the axial left side of the inner ring 2, and a second dustproof structure 30 is provided on the axial right side of the inner ring 2. The first dustproof structure 20 and the second dustproof structure 30 are arranged on the left side and the right side of the inner ring 2, so that the sealing performance and the dustproof effect of the bearing are improved, and the bearing can adapt to a dusty working environment.

Further, as a preferred embodiment of the present invention, the first dust-proof structure 20 includes an annular dust-proof retainer 21 fitted into the outer ring 1, and a dust-proof cover 22 snap-connected to the dust-proof retainer 21. As can be seen from the figure, the outer side of the dust-proof retainer ring 21 is fitted into the outer ring 1, and the inner side of the dust-proof retainer ring 21 is snap-fitted into the dust-proof cover 22. Specifically, the dust cap 22 is plastic. Simple structure and good dustproof effect.

Further, as a preferred embodiment of the present invention, the dust-proof retainer ring 21 includes a base portion 211 parallel to a radial plane of the bearing, and a connecting portion 212 provided on the base portion 211 and caulked to the outer ring 1. Simple structure and good sealing effect.

Further, as a preferred embodiment of the present invention, but not limited thereto, the second dust-proof structure 30 includes a seal ring 31 disposed between the outer ring 1 and the inner ring 2. Specifically, the seal ring 31 includes a latch 311 fitted into the outer ring 1 and a seal lip 312 elastically abutting against the inner ring 2. Simple structure and good sealing effect.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.

Claims

1. An outer ring-guided shaft-connected double-row angular contact roller bearing is characterized by at least comprising an outer ring (1), an inner ring (2) and two rows of rolling bodies (3) arranged between the outer ring (1) and the inner ring (2), the included angle formed by the connecting line of the centers of the rolling bodies (3) and the contact points of the inner ring channel and the outer ring channel and the radial plane of the bearing is a contact angle beta, the outer surface of the outer ring (1) is provided with a guide groove (4) which extends inwards along the radial direction and is used for rolling and matching with the guide rail, the guide groove (4) comprises a left cambered surface (42) and a right cambered surface (43) which are mutually crossed and have the same curvature radius, the joint of the left cambered surface (42) and the right cambered surface (43) is in arc transition, the left cambered surface (42) and the right cambered surface (43) are tangent to the guide rail when the guide groove (4) is in rolling fit with the guide rail.

2. An outer ring guided double row angular contact roller bearing according to claim 1, wherein the inner ring (2) is a shaft inner ring with a central bolt hole, and the bolt hole shaft (5) is provided on the axial right side of the inner ring (2).

3. An outer ring guided double row angular contact roller bearing according to claim 1, wherein the contact angle β is: 20 to 30 degrees.

4. An outer ring guided double row angular contact roller bearing according to claim 1, wherein a first dust protection (20) is provided on the axial left side of the inner ring (2) and a second dust protection (30) is provided on the axial right side of the inner ring (2).

5. An outer ring guided double row angular contact roller bearing according to claim 4, wherein the first dust-proof structure (20) comprises an annular dust-proof retainer ring (21) fitted into the outer ring (1) and a dust-proof cover (22) snap-fitted to the dust-proof retainer ring (21).

6. An outer ring guided double row angular contact roller bearing according to claim 5, wherein the dust retainer ring (21) comprises a base portion (211) parallel to the radial plane of the bearing and a connecting portion (212) provided on the base portion (211) to be riveted to the outer ring (1).

7. An outer ring guided double row angular contact roller bearing according to claim 4, wherein the second dust protection (30) comprises a sealing ring (31) arranged between the outer ring (1) and the inner ring (2).

8. An outer ring guided double row angular contact roller bearing according to claim 7, wherein the sealing ring (31) comprises a latch (311) engaging with the outer ring (1) and a sealing lip (312) elastically abutting against the inner ring (2).