CN2361899Y

CN2361899Y - Two-row large angle contact ball bearing

Info

Publication number: CN2361899Y
Application number: CN 98239811
Authority: CN
Inventors: 徐百瀛; 刘洪富
Original assignee: WAFANGDIAN HEAVY MILL BEARING FACTORY
Current assignee: WAFANGDIAN HEAVY MILL BEARING FACTORY
Priority date: 1998-12-24
Filing date: 1998-12-24
Publication date: 2000-02-02
Anticipated expiration: 2008-12-24

Abstract

The utility model relates to a two-row large angle contact ball bearing; primarily, the width of two-half abutting symmetrical inner ring at the middle is same with the width of an outer ring; both sides of a concave surface of each inner ring are provided with two channels which are symmetrical and have the same arc with the channel of the outer ring. A spacing ring is respectively arranged between each half inner ring and the outer ring; two spacing rings are symmetrical; the axial sections form a big opening which is toward the outer ring, the shape of which is like the Chinese character 'ba'. Both ends of each spacing ring body are respectively positioned in a space between the inner ring and the outer ring; the extension lines and a bearing axis form acute angles within 60 to 70DEG; each spacing ring is provided with uniformly distributed through holes in which balls are built-in. The utility model can bear bigger axial load, long service life and easy manufacture and installation.

Description

The big angular contact ball bearing of biserial

The utility model relates to a kind of rolling bearing.

The double-row angular contact bal bearing kind is a lot of at present, and can bear larger axis and have only 45 ° to its wrapping angle maximum of bearing of power, but bidirectional propulsion corner connection ball bearing (former model 268000 series), its wrapping angle can reach more than 60 °.Its main structure is that inner ring is two, and the outer ring is an one, but width is less than two inner race width, and cage ring is two bodies, and shape is with the L type behind its structural profile, and steel ball is contained in the U type hole, mouthful sealing of open cutter.Though this structure wrapping angle is bigger, can bear larger axis to load than other angular contact ball bearing, but its deficiency is: open cage ring intensity is low, for determining that axial internal clearance need increase an annex, because the outer ring width is still needed when installing less than two inner race width and is enclosed the width both sides outside and respectively increase a spherical annex, so just, caused this bearing part many, complex structure, manufacturing and install and use all and make troubles.

The purpose of this utility model is to provide a kind of larger axis that can bear to simple in structure, the processing of load and install and be relatively easy to the big angular contact ball bearing of biserial.

The purpose of this utility model can realize by following measure: the big angular contact ball bearing of a kind of biserial, the arcuation raceway groove that the center of circle is positioned at two symmetries on the gyration center circular diameter is established in the both sides of its middle part, outer ring projection, the inner race width of two hemihedry of middle butt joint is identical with the outer ring, the raceway groove identical with the outer ring raceway radian that the center of circle is positioned at two symmetries on the gyration center circular diameter established in the both sides of this inner ring concave surface, it is characterized in that: between per half inner ring and outer ring, establish a cage ring, both symmetries, and axial cross section is the splayed shape of big opening towards the outer ring, each cage ring monomer two ends lays respectively in the space folded between the Internal and external cycle, the folded acute angle of their elongation line and bearing axis is 60～70 °, all is provided with the uniform through hole of ball on above-mentioned each cage ring.Be provided with linking to each other at an angle with cage ring and being positioned at the isolation ring support of Internal and external cycle institute clip space of symmetry in the cage ring one or both ends.

The utility model mainly includes outer ring, inner ring, cage ring and ball.Wherein the outer ring makes the approximate T shape that is symmetry of axial cross section of this outer ring towards the middle part of inner ring projection.Tu Qi both sides are provided with the arcuation raceway groove of two symmetries in the middle, and their center of circle is positioned on the anchor ring of gyration center circular diameter formation.Inner ring is the two halves of symmetry, middle butt joint.The inner ring of forming by them identical with the outer ring width, it is towards the middle part of outer ring indent, make that the axial cross section of this inner ring is approximate to be Qian shape, establish the arcuation raceway groove identical with the outer ring raceway radian of two symmetries in the both sides of its concave surface, their center of circle also is positioned on the anchor ring of gyration center circular diameter formation.So two raceway grooves of outer ring and two groups of rotating spaces of ball of the relative formation of two raceway grooves of two halves inner ring.

For ball is spaced from each other, between per half inner ring and outer ring, establish a rotating ring bodies cage ring of independence.The cage ring of this two symmetry, their axial cross section is splayed shape, and big opening is towards the outer ring.Each cage ring monomer two ends lays respectively in the space folded between the Internal and external cycle, and the folded acute angle of their elongation line and bearing axis is 60～70 °.Be to increase the intensity of cage ring, be preferably in the one or both ends of cage ring, be provided with linking to each other at an angle with cage ring and being positioned at the isolation ring support of Internal and external cycle institute clip space of symmetry.All be provided with the uniform through hole corresponding with ball diameter and number on each cage ring ring bodies, spin places in the above-mentioned through hole.Symmetry described in the utility model all is to be symmetry with the plane of crossing the bearing width center.

The utility model has following advantage compared to existing technology:

1, the utility model can make wrapping angle increase to 70 °, thereby can bear larger axis to load, long service life.

2, the utility model parts are few, and simple in structure, manufacturing is installed all than being easier to.

Drawing is described as follows:

Fig. 1 is the utility model example 1 axial section schematic representation.

Fig. 2 is the utility model example 2 axial section schematic representation.

Fig. 3 is the utility model example 3 axial section schematic representation.

The utility model is described in further detail to utilize the example shown in the accompanying drawing.In the axial section schematic representation of the big angular contact ball bearing of biserial shown in Figure 1, approximate T-shaped outer ring 1, the both sides of its middle part projection are provided with the arcuation raceway groove 2 of two symmetries, and their center of circle is positioned on the anchor ring of gyration center circular diameter formation.The two halves inner ring 3 of the symmetry of middle butt joint is similar to and is Qian shape, and the both sides of its concave surface are provided with the arcuation raceway groove 4 identical with the outer ring raceway radian of two symmetries, and their center of circle also is positioned on the anchor ring of gyration center circular diameter formation.Establish a rotating ring bodies cage ring 5 of independence between per half inner ring and outer ring, the cage ring of this two symmetry is splayed shape, and big opening is towards the outer ring.Each cage ring monomer two ends lays respectively in the space folded between the Internal and external cycle, the folded acute angle of their elongation line and bearing axis is 60～70 °, all be provided with the uniform through hole corresponding with ball diameter and number on each cage ring ring bodies, ball 6 places in the above-mentioned through hole.

In the axial section schematic representation of the big angular contact ball bearing of biserial shown in Figure 2, its structure is basic identical with example 1, just is provided with the isolation ring support 7 of symmetry at cage ring one end.

In the axial section schematic representation of the big angular contact ball bearing of biserial shown in Figure 3, its structure is identical with example substantially, just is provided with the isolation ring support of symmetry at the cage ring two ends.

Claims

1, the big angular contact ball bearing of a kind of biserial, the arcuation raceway groove (2) that the center of circle is positioned at two symmetries on the gyration center circular diameter is established in the both sides of middle part, its outer ring (1) projection, inner ring (3) width of two hemihedry of middle butt joint is identical with the outer ring, the raceway groove (4) identical with the outer ring raceway radian that the center of circle is positioned at two symmetries on the gyration center circular diameter established in the both sides of this inner ring concave surface, it is characterized in that: between per half inner ring and outer ring, establish a cage ring (5), both symmetries, and axial cross section is the splayed shape of big opening towards the outer ring, each cage ring monomer two ends lays respectively in the space folded between the Internal and external cycle, the folded acute angle of their elongation line and bearing axis is 60～70 °, all is provided with the uniform through hole of ball (6) on above-mentioned each cage ring.

2, the big angular contact ball bearing of biserial according to claim 1 is characterized in that: be provided with linking to each other at an angle with cage ring and being positioned at the isolation ring support (7) of Internal and external cycle institute clip space of symmetry in the cage ring one or both ends.