CN206582241U

CN206582241U - Roller bearing

Info

Publication number: CN206582241U
Application number: CN201621042138.9U
Authority: CN
Inventors: 周新
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2016-09-07
Filing date: 2016-09-07
Publication date: 2017-10-24
Anticipated expiration: 2026-09-07

Abstract

The application is related to a kind of roller bearing, the roller bearing includes the first ring, the second ring and the roller being limited between first ring and second ring, first ring and second ring have the raceway contacted with the roller rolls, it is characterised in that：The roller bearing also includes rib ring, in the outside of the raceway, and first ring and/or second ring have for being adapted to the rib ring, and prevent the auxiliary section of abjection on the outside of the rib ring.Stress concentration can be prevented effectively from using the split rib ring of technical scheme, bearing load carrying capacity is improved, and then improve bearing life.

Description

Roller bearing

Technical field

The application is related to a kind of bearing, especially a kind of roller bearing.

Background technology

Cylinder roller bearing can bear larger radial load, when Internal and external cycle all carries rib simultaneously, can also hold By certain axial load, therefore it is widely used in the fields such as rolling mill, generator and railway.

Fig. 1 shows a kind of typical cylinder roller bearing 1, and the bearing outer ring 10 has two ribs 11, and inner ring 12 has There is a rib 13, based on the reason for manufacturing process, as shown in Fig. 2 in the inner side of rib 13 of inner ring 12 and raceway junction shape Camber escape 14, based on the radius size of the escape 14, can produce larger stress concentration herein, when cylindrical roller with During larger axial force impact rib, the stress near escape 14 can be very big, and this may result in the broken of rib Damage or be broken.

In order to reduce the stress at the escape, it usually needs increase escape radius size or cause escape with Transition between raceway is more smooth, but nonetheless, as long as escape is present, still can there is stress concentration, and this certainly will The loaded capability of bearing will be influenceed.

Utility model content

The problem of the application is solved is to provide a kind of roller bearing, and to solve, existing roller bearing load capacity is relatively low to ask Topic.

To solve the above problems, the application provides a kind of roller bearing, the roller bearing includes the first ring, the second ring And the roller between first ring and second ring is limited at, first ring and second ring have The raceway contacted with the roller rolls, it is characterised in that：The roller bearing also includes rib ring, in the outer of the raceway Side, first ring and/or second ring, which have, to be used to be adapted to the rib ring, and is prevented on the outside of the rib ring The auxiliary section of abjection.

Preferably, the auxiliary section is more than the auxiliary section with the outside diameter that the rib ring coordinates and coordinated with the rib ring Inside diameter.

Specifically, the auxiliary section includes the cooperation section with following characteristics：In the rotary shaft by the roller bearing On section, the cooperation section relative to corresponding first ring or the raceway of the second ring extended line further away from raceway and the rolling The distance in the face that the rotary shaft of son is determined is smaller.

Further, the roller bearing is centripetal cylinder roller bearing, and the cooperation section is generally conical shape.

Preferably, the cone angle of the taper is 1~5 degree.

Alternatively, the rib ring is adapted to the auxiliary section of the first ring of the roller bearing, and first ring is Inner ring.

Alternatively, the roller is taper roller or cylindrical roller.

Preferably, the rib ring is assembled with the auxiliary section by press-fit.

Preferably, the rib ring has groove of at least one opening towards relative the first ring or the second ring, Deformation space for providing direction along ng a path.

Further, the channel section is semiellipse type groove, V-groove, U-type groove or rectangular channel.

Compared with prior art, the application has advantages below：The application roller bearing includes rib ring, in the raceway Outside, first ring and/or second ring, which have, to be used to be adapted to the rib ring, and prevents the rib ring The auxiliary section of outside abjection, stress concentration can be prevented effectively from using the split rib ring of technical scheme, improve bearing Bearing capacity, and then bearing life is improved, groove of the opening towards relative ring is set on the split rib ring in addition, can Axial force of the part from roller direction along ng a path is effectively absorbed, the bearing capacity of whole bearing is improved.

Brief description of the drawings

Fig. 1 is the schematic diagram of existing cylinder roller bearing；

Fig. 2 is the close-up schematic view of cylinder roller bearing in Fig. 1；

Fig. 3 is the schematic diagram of the application roller bearing embodiment 1；

Fig. 4 is the partial structural diagram of roller bearing shown in Fig. 3；

Fig. 5 is the schematic diagram of the application roller bearing embodiment 2；

Fig. 6 is the partial structural diagram of roller bearing shown in Fig. 5；

Fig. 7 shows the corresponding stressing conditions schematic diagram of different groove profiles.

Embodiment

It is understandable to enable the above-mentioned purpose of the application, feature and advantage to become apparent, below in conjunction with the accompanying drawings to the application Specific embodiment be described in detail.

Embodiment 1

The application roller bearing embodiment 1 is as shown in figure 3, the roller bearing 2 is cylinder roller bearing, including the first ring 21st, the second ring 22 and the roller 23 being limited between first ring and second ring, first ring 21 There is the raceway 211,222 being in rolling contact with the roller 23 respectively with second ring 22, wherein the first ring 21 is outer Circle, the second ring 22 is inner ring, in addition, the roller bearing 2 also includes the rib ring 24 for backstop roller 23, is used as inner ring Second ring 22 has the auxiliary section 223 for being used for being adapted to the rib ring 24 in the outside of raceway 222, and the auxiliary section 223 has Following characteristics：On the section of the rotary shaft by the roller bearing 2, the auxiliary section 223 is relative to corresponding second ring The extended line A-A of 22 raceway 222 is determined further away from the rotary shaft O-O of raceway (i.e. along direction D shown in figure) and the roller Face it is smaller apart from H, specifically, visible with reference to Fig. 4, the auxiliary section is tapered.Wherein, for the cylindrical roller shown in Fig. 3 Corresponding for bearing, the extended line of raceway 222 is straight line, and the straight line parallel is in the rotation axis and roller of roller bearing Rotation axis, Fig. 3 is shown in which a section by the rotary shaft of bearing.

Understandably, the auxiliary section 223 for the second ring 22 illustrated in Fig. 3 has following characteristics on the whole：By institute On the section for the rotary shaft for stating roller bearing 2, cooperation section prolonging relative to the raceway of corresponding first ring or the second ring The distance in the face that long line is determined further away from the rotary shaft of raceway and the roller is smaller.Understandably, the rotary shaft of roller and rolling The rotary shaft of sub- bearing is different.Convertiblely, the auxiliary section 223 can also have the cooperation section for partly meeting features described above, The effect of cooperation section or auxiliary section is that behind auxiliary section 223 and the progress press-fit of rib ring 24, rib ring will not be because of rolling Son axial force or axial thrust load or direction along ng a path load and depart from auxiliary section.

For the ease of realizing the press-fit between auxiliary section 223 and rib ring 24, as shown in figure 4, the cone angle of auxiliary section 223 Can not be excessive, specifically rational cone angle can be selected according to the two material and bearing capacity, it is preferable that the cone angle is 1~5 Degree.

Embodiment 2

The application roller bearing embodiment 2 is as shown in figure 5, the roller bearing 3 is also cylinder roller bearing, including first lap Ring 31, the second ring 32, the roller 33 and rib ring 34 being limited between first ring and second ring, with The difference of embodiment 1 is that the rib ring 34 has groove 341 of the opening towards the second relative ring 32, when When the rib ring 34 is power vertically by the direction along ng a path from roller 33, the groove 341 can provide direction along ng a path Deformation space, absorb vibration of the part from roller 33 or power, the further anti-stop edge on the basis of taper fit portion 323 Ring 34 departs from auxiliary section 323, and effectively improves the bearing capacity of whole roller bearing 3.

With reference to shown in Fig. 6, it is seen then that groove 341 is in half elliptic type in the profile shown in Fig. 4, Fig. 5.

In addition, convertiblely, the groove 341 can also have other cross sectional shapes, such as V-type, U-shaped or square type.

Applicant show that different channel section shapes can bring different distribution of force by simulation flowchart, tool Body, as shown in Figure 7：Under identical well width and groove depth size and same boundary condition and Axial Loads, half The maximum stress that oval type groove is shown is minimum, therefore the Blanking cavity design has higher load-carrying ability.

Both examples above is illustrated by taking cylinder roller bearing as an example, can alternatively, present techniques side Case is applicable to roller in cylindrical type or cone, needs to bear the specific operation of the power along raceway direction particularly with roller The lower roller bearing used.

The application roller bearing includes split rib ring, in the outside of the raceway, first ring and/or described the Two rings, which have, to be used to be adapted to the rib ring, and prevents the auxiliary section of abjection on the outside of the rib ring, in order to prevent split Rib ring is deviate from from outside, and a variety of backstop modes can be used between auxiliary section and rib ring, such as friction lock, material is sealed Or shape sealed, the fit structure of taper is employed in both examples above, specifically, the auxiliary section and the rib The outside diameter that ring coordinates is more than the inside diameter that the auxiliary section coordinates with the rib ring, and auxiliary section is implemented except that can use Outside straight line pyramidal structure in example, it would however also be possible to employ the pyramidal structure with curved profile realizes the work of anti-stop edge ring abjection With.Specifically, in the above-described embodiments, the auxiliary section includes the cooperation section with following characteristics：Passing through the roller bearing Rotary shaft section on, the cooperation section relative to corresponding first ring or the raceway of the second ring extended line further away from rolling The distance in the face that the rotary shaft of road and the roller is determined is smaller.Can be effective using the split rib ring of technical scheme Stress concentration is avoided, bearing load carrying capacity is improved, and then improves bearing life, opening court is set on the split rib ring in addition To the groove of relative ring, axial force of the part from roller direction along ng a path can effectively be absorbed by the deformation of rib, Improve the bearing capacity of whole bearing.

Although the application is only described with regard to some exemplary embodiments, these descriptions should be only as example without structure Into limitation.In the range of appended claims record, in the case of the application spirit and scope are not departed from, various change is equal It is possible.

Claims

1. a kind of roller bearing, the roller bearing includes the first ring, the second ring and is limited at first ring and institute The roller between the second ring is stated, first ring and second ring have the raceway contacted with the roller rolls, It is characterized in that：The roller bearing also includes rib ring, in the outside of the raceway, first ring and/or described the Two rings, which have, to be used to be adapted to the rib ring, and prevents the auxiliary section of abjection on the outside of the rib ring.

2. roller bearing as claimed in claim 1, it is characterised in that：The outside diameter that the auxiliary section coordinates with the rib ring The inside diameter coordinated more than the auxiliary section and the rib ring.

3. roller bearing as claimed in claim 1, it is characterised in that：The auxiliary section includes the cooperation section with following characteristics： On the section of the rotary shaft by the roller bearing, rolling of the cooperation section relative to corresponding first ring or the second ring The distance in the face that the extended line in road is determined further away from the rotary shaft of raceway and the roller is smaller.

4. roller bearing as claimed in claim 2 or claim 3, it is characterised in that：The roller bearing is centripetal cylinder roller bearing, The cooperation section is generally conical shape.

5. roller bearing as claimed in claim 4, it is characterised in that：The cone angle of the taper is 1~5 degree.

6. roller bearing as claimed in claim 1, it is characterised in that：First ring of the rib ring and the roller bearing Auxiliary section adaptation, first ring be inner ring.

7. roller bearing as claimed in claim 1, it is characterised in that：The roller is taper roller or cylindrical roller.

8. roller bearing as claimed in claim 1, it is characterised in that：The rib ring is charge-coupled by being press-fitted with the auxiliary section Dress.

9. roller bearing as claimed in claim 1, it is characterised in that：The rib ring has at least one opening towards relatively The first ring or the second ring groove, the deformation space for providing direction along ng a path.

10. roller bearing as claimed in claim 9, it is characterised in that：The channel section is semiellipse type groove, V-groove, U Type groove or rectangular channel.