CN203979121U - The radially ball-type slewing bearing of arc raceway - Google Patents
The radially ball-type slewing bearing of arc raceway Download PDFInfo
- Publication number
- CN203979121U CN203979121U CN201420441874.6U CN201420441874U CN203979121U CN 203979121 U CN203979121 U CN 203979121U CN 201420441874 U CN201420441874 U CN 201420441874U CN 203979121 U CN203979121 U CN 203979121U
- Authority
- CN
- China
- Prior art keywords
- raceway
- steel ball
- outer ring
- arc
- inner ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses the radially ball-type slewing bearing of arc raceway, it comprises inner ring and outer ring, inner ring and outer ring are ring part, on the inner headed face of outer ring, single, two row and above arc raceways are offered at interval, in the periphery correspondence of inner ring, offer single, two row and above arc raceways, between inside and outside circle raceway, correspondence has formed complete steel ball rolling channel, described steel ball rolling channel is upper and lower symmetrical, left-right asymmetry structure, and outer ring arc raceway radius of curvature is larger than inner ring arc raceway radius of curvature.The radially ball-type slewing bearing of the arc raceway that the utility model proposes, simple in structure, easy to use, meet the usage requirement bear large radial force or to bear less axial force, rotating speed is lower, structural requirement is compact workplace simultaneously, improved radially bearing capacity of pivoting support, thus the working life of having improved pivoting support.
Description
Technical field
The utility model relates to a kind of pivoting support, and concrete is a kind of radially ball-type slewing bearing of arc raceway.
Background technique
Pivoting support, as the important foundation element of engineering machinery and building machinery, is the necessary important force transfer element of machinery that needs to do relative revolution between all two-part, needs to bear again axial force, radial force, tilting moment.
Pivoting support is divided into by its structural type: single-row ball type, three organ timbering formulas, crossed pin roller type, double eight point contact ball formulas, bowling pin combination type.The most frequently used ball-type slewing bearing structure is mainly inside and outside cast formula, raceway is upper and lower symmetrical, Internal and external cycle is symmetrical, can bear axial force, radial force, tilting moment simultaneously, but when only bearing large radial force or bearing large radial force, less axial force simultaneously, and under radial dimension, height dimension is limited and rotating speed is lower workplace, be that bearing capacity or configuration aspects all cannot meet usage requirement.Inside and outside circle raceway can bear while using thrust load that wherein single-row ball type slewing bearing is actual is limited, and inner ring is all on the low side compared with the bearing capacity of outer ring, life-span; The radial load that double eight point contact ball formulas and three row's central pest slewing rings can bear is larger, but sectional dimension is too large, cannot meet the demands.
Summary of the invention
Technical problem to be solved in the utility model is to provide the radially ball-type slewing bearing of arc raceway, meet the usage requirement bear large radial force or to bear less axial force, rotating speed is lower, structural requirement is compact workplace simultaneously, improve radially bearing capacity of pivoting support, thus the working life of improving pivoting support.The radially ball-type slewing bearing of the arc raceway of the utility model indication is that rolling element is single, two row and above pivoting supports.
For achieving the above object, the radially ball-type slewing bearing of the utility model arc raceway, it comprises inner ring and outer ring, inner ring and outer ring are ring part, on the inner headed face of outer ring, single, two row and above arc raceways are offered at interval, in the periphery correspondence of inner ring, offer single, two row and above arc raceways, between inside and outside circle raceway, correspondence has formed complete steel ball rolling channel, described steel ball rolling channel is upper and lower symmetrical, left-right asymmetry structure, and outer ring arc raceway radius of curvature is larger than inner ring arc raceway radius of curvature; For the pivoting support of two rows and above arc raceway, steel ball is arranged in steel ball rolling channel, and the steel ball in every row's raceway adopts isolation mounting evenly to separate; During use, between external agency and this pivoting support, by inside and outside circle, be located by connecting, radially ball-type slewing bearing is achieved the relative revolution of mechanism top and the bottom by overcoming the frictional force of radial force generation.
For further improving the radial force bearing capacity of the radially ball-type slewing bearing of the arc raceway that the utility model proposes, running in the steel ball rolling channel of assurance steel ball is stable, outer ring raceway radius of curvature is 1.04 ~ 1.1 times of steel ball radius, inner ring raceway radius of curvature is 1.01 ~ 1.08 times of steel ball radius, inner ring raceway radius of curvature is less than outer ring raceway radius of curvature, the wrapping angle of steel ball and outer ring raceway is less than the wrapping angle of steel ball and inner ring raceway, the span of the wrapping angle of the wrapping angle of steel ball and outer ring raceway and steel ball and inner ring raceway is 10o ~ 30 °, be advisable for 20 °.
The radially ball-type slewing bearing of the arc raceway that the utility model proposes, simple in structure, easy to use, meet the usage requirement bear large radial force or to bear less axial force, rotating speed is lower, structural requirement is compact workplace simultaneously, improved radially bearing capacity of pivoting support, thus the working life of having improved pivoting support.
Accompanying drawing explanation
Fig. 1 is the radially ball-type slewing bearing structural representation of the arc raceway that proposes of the utility model.
Fig. 2 is that steel ball rolling channel structural representation is I portion concrete structure schematic diagram in Fig. 1.
Embodiment
Referring to accompanying drawing, the radially ball-type slewing bearing of arc raceway, it comprises inner ring 1 and outer ring 2, inner ring and outer ring are ring part, on the inner headed face of outer ring, single, two row and above arc raceways are offered at interval, in the periphery correspondence of inner ring, offer single, two row and above arc raceways, between inside and outside circle raceway, correspondence has formed complete steel ball rolling channel, described steel ball rolling channel is upper and lower symmetrical, left-right asymmetry structure, and outer ring arc raceway radius of curvature R 1 is larger than inner ring arc raceway radius of curvature R 2; For the pivoting support of two rows and above arc raceway, steel ball is arranged in steel ball rolling channel, and the steel ball in every row's raceway adopts isolation mounting evenly to separate; During use, between external agency and this pivoting support, by inside and outside circle, be located by connecting, radially ball-type slewing bearing is achieved the relative revolution of mechanism top and the bottom by overcoming the frictional force of radial force generation.
For further improving the radial force bearing capacity of the radially ball-type slewing bearing of the arc raceway that the utility model proposes, running in the steel ball rolling channel of assurance steel ball is stable, outer ring raceway radius of curvature R 1 is 1.04 ~ 1.1 times of steel ball radius r, inner ring raceway radius of curvature R 2 is 1.01 ~ 1.08 times of steel ball radius r, inner ring raceway radius of curvature R 2 is less than outer ring raceway radius of curvature R 1, the wrapping angle β 1 of steel ball and outer ring raceway is less than the wrapping angle β 2 of steel ball and inner ring raceway, β 1 and β 2 spans are 10o ~ 30 °, be advisable for 20 °, now, the outer ring raceway circular arc center of circle and steel ball center-diameter to, axially offset is respectively e1, e2, the inner ring raceway circular arc center of circle and steel ball center-diameter to, axially offset is respectively e3, e4:
e1=（R1-r）*cosβ1；
e2=（R1-r）*sinβ1；
e3=（R2-r）*cosβ2；
e4=（R2-r）*sinβ2；
Wherein: R1---outer ring raceway radius of curvature;
R2---inner ring raceway radius of curvature;
R---steel ball radius;
β 1---the wrapping angle of steel ball and outer ring raceway;
β 2---the wrapping angle of steel ball and inner ring raceway.
Wrapping angle β 1, β 2 values are 20 °, the outer ring raceway circular arc center of circle and steel ball center radially, axially eccentric amount e 1=0.03759r, e2=0.01368 r, the inner ring raceway circular arc center of circle and steel ball center-diameter to, axial eccentric amount e 3=0.01879r, e4=0.00684r.
The radially ball-type slewing bearing of the arc raceway that the utility model proposes, simple in structure, easy to use, meet the usage requirement bear large radial force or to bear less axial force, rotating speed is lower, structural requirement is compact workplace simultaneously, improved radially bearing capacity of pivoting support, thus the working life of having improved pivoting support.
Claims (3)
1. the radially ball-type slewing bearing of arc raceway, it comprises inner ring and outer ring, it is characterized in that inner ring and outer ring are ring part, on the inner headed face of outer ring, single, two row and above arc raceways are offered at interval, in the periphery correspondence of inner ring, offer single, two row and above arc raceways, between inside and outside circle raceway, correspondence has formed complete steel ball rolling channel, and described steel ball rolling channel is upper and lower symmetrical, left-right asymmetry structure, and outer ring arc raceway radius of curvature is larger than inner ring arc raceway radius of curvature.
2. the radially ball-type slewing bearing of arc raceway according to claim 1, it is characterized in that outer ring raceway radius of curvature is 1.04 ~ 1.1 times of steel ball radius, inner ring raceway radius of curvature is 1.01 ~ 1.08 times of steel ball radius, inner ring raceway radius of curvature is less than outer ring raceway radius of curvature, the wrapping angle of steel ball and outer ring raceway is less than the wrapping angle of steel ball and inner ring raceway, and the span of the wrapping angle of the wrapping angle of steel ball and outer ring raceway and steel ball and inner ring raceway is 10 degree to 30 degree.
3. the radially ball-type slewing bearing of arc raceway according to claim 2, is characterized in that the wrapping angle of steel ball and outer ring raceway and the wrapping angle of steel ball and inner ring raceway are 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441874.6U CN203979121U (en) | 2014-08-07 | 2014-08-07 | The radially ball-type slewing bearing of arc raceway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441874.6U CN203979121U (en) | 2014-08-07 | 2014-08-07 | The radially ball-type slewing bearing of arc raceway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979121U true CN203979121U (en) | 2014-12-03 |
Family
ID=51976571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420441874.6U Active CN203979121U (en) | 2014-08-07 | 2014-08-07 | The radially ball-type slewing bearing of arc raceway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203979121U (en) |
-
2014
- 2014-08-07 CN CN201420441874.6U patent/CN203979121U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2570240C1 (en) | Large rolling bearing | |
| CN202348971U (en) | High-precision heavy-load turntable bearing with combination of cross roller and four point spheres | |
| CN202520801U (en) | Die for assembling double row angular contact bearings | |
| CN203009568U (en) | Full two-row ball bearing | |
| CN204828280U (en) | Height bears type two -row ball bearing | |
| CN206754153U (en) | A kind of double outer ring floating bearings | |
| CN202031981U (en) | Cross roller and ball combined slewing bearing | |
| CN203979121U (en) | The radially ball-type slewing bearing of arc raceway | |
| CN103244552B (en) | Large-scale multi-roller bearing | |
| CN201739343U (en) | Elliptical raceway double-row eight-point contact type slewing bearing | |
| CN206754170U (en) | A kind of double wire roller pivoting support | |
| CN203404237U (en) | Double-column double-row ball type slewing bearing | |
| CN208024711U (en) | Double-row angular contact bal bearing | |
| CN202659723U (en) | Six-row rolling-cone type slewing bearing | |
| CN112178048A (en) | Slewing bearing with three-row-column combined structure | |
| CN202937624U (en) | Angular contact ball bearing | |
| CN201739342U (en) | Multi-volleyball pivoting support | |
| CN202165437U (en) | Rolling body provided with extension posts at two ends | |
| CN201973089U (en) | Double-track slewing bearing | |
| CN202451597U (en) | Double row thrust ball type slewing bearing | |
| CN201513472U (en) | Novel single-row self-aligning roller bearing | |
| CN203463489U (en) | Novel single-row angular contact ball bearing | |
| CN207454563U (en) | A kind of combined type outer ring of double row ball bearing | |
| CN201926375U (en) | Slewing bearing for emission device | |
| CN202451598U (en) | Three-column thrust ball type slewing bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |