CN203670467U - Self-aligningroller bearing - Google Patents
Self-aligningroller bearing Download PDFInfo
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- CN203670467U CN203670467U CN201420003918.7U CN201420003918U CN203670467U CN 203670467 U CN203670467 U CN 203670467U CN 201420003918 U CN201420003918 U CN 201420003918U CN 203670467 U CN203670467 U CN 203670467U
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- bearing
- spherical roller
- self
- rolling surface
- inner ring
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- 238000005096 rolling process Methods 0.000 claims abstract description 31
- 230000003746 surface roughness Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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Abstract
The utility model provides a self-aligningroller bearing and can inhibit heating of the self-aligningroller bearing. Theself-aligningroller bearing is characterized in that relations between a curvature radius ra of an outer ring rolling surface in an axial direction, a curvature radius rb of an inner ring rolling surfacein an axial direction and a curvature radius rc of a rolling surface of each spherical rollerin an axial direction satisfy all following formulas: (1) rc/ra is larger than or equal to 0.945 and smaller than or equal to 0.995; (2) rc/rb is larger than or equal to 0.945 and smaller than or equal to 0.995; and (3) the rc/rb is smaller than or equal to the rc/ra.
Description
Technical field
The utility model relates to the rolling bearing take spherical roller as rolling element.
Background technique
In recent years, along with speed up and the maximization of elevator, the bearing that requirement reduction is supported the elevator axle of elevator hoist sound and vibration in the running.In patent documentation 1, the improvement of the retainer structure to bearing is disclosed as reducing the countermeasure of bearing impulsive sound for example.
But except elevator is with the reducing noise of bearing, the life-span of improving bearing also becomes problem.Not only take inside as starting point is peeled off and the peeling off the life-span that can affect bearing as starting point take surface, and in two self-aligning roller bearings of the axle both sides that are installed on elevator (so-called fixed side and free side), use the both sides that can bear axial load and radial load at the self-aligning roller bearing of fixed side, thus, be easy to produce heating, thereby make the possibility of the lost of life of bearing higher because of sintering.
Patent documentation 1: TOHKEMY 2012-237445 patent Publication
Model utility content
In order to solve above-mentioned problem, the utility model provides following technological scheme.
(1) provide a kind of self-aligning roller bearing, it has: the outer ring on inner peripheral surface with outer race track face; On outer circumferential face, there is the inner ring of inner race track face; With multiple spherical rollers, roll and be disposed in freely between outer race track face and inner race track face, and there is the rolling surface relative with outer race track face and inner race track face, it is characterized in that, relation between radius of curvature rc in radius of curvature rb in radius of curvature ra in the axial direction of outer ring rolling surface, the axial direction of inner ring raceway face and the axial direction of above-mentioned rolling surface, meets whole following formula (1)～(3):
0.945≤rc/ra≤0.995…（1）
0.945≤rc/rb≤0.995…（2）
rc/rb≤rc/ra…（3）。
Above-mentioned formula (1)～(3) are described.In order to extend the life-span of self-aligning roller bearing, need to be suppressed at skidding and reducing tangential force of producing between spherical roller and inner ring, and reduce interface pressure.In order to reduce interface pressure, as long as increase the area of contact producing in the time that spherical roller contact with Internal and external cycle, and make radius of curvature in the axial direction of inner ring and outer ring, and the axial direction of spherical roller on radius of curvature approaching.Thus, it is more than 0.945 making the ratio rc/ra between spherical roller and outer ring, and to make the ratio rc/rb between spherical roller and inner ring be more than 0.945.On the other hand, if the area of contact producing when spherical roller contacts with Internal and external cycle is excessive, acting on skidding between spherical roller and Internal and external cycle can become large and increase tangential force, thus, produce and can reduce the inhibition of skidding that the above-mentioned surface roughness of passing through increasing outer ring rolling surface obtains, and, can be created in the problem of surface of contact heating etc.Thus, making the ratio rc/ra between spherical roller and outer ring is below 0.995, and to make the ratio rc/rb between spherical roller and inner ring be below 0.995.And, for retainer shaft friction equilibrium of forces upwards, and make rc/rb≤rc/ra.
(2) according to the self-aligning roller bearing described in technological scheme 1, it is characterized in that, the aperture surface diameter of inner ring is more than 60mm but not enough 140mm, the inner play of bearing is 50～120 μ m, the circularity of spherical roller is 0.1～1.7 μ m, and the rolling surface arithmetic mean surface roughness of spherical roller is 0.01～0.16 μ m.
(3) according to the self-aligning roller bearing described in technological scheme 1, it is characterized in that, the aperture surface diameter of inner ring is more than 140mm but not enough 300mm, the inner play of bearing is 80～180 μ m, the circularity of spherical roller is 0.1～2.2 μ m, and the rolling surface arithmetic mean surface roughness of spherical roller is 0.02～0.20 μ m.
(4) according to the self-aligning roller bearing described in technological scheme 1, it is characterized in that, the aperture surface diameter of inner ring is 300mm～450mm, the inner play of bearing is 100～300 μ m, the circularity of spherical roller is 0.2～3.5 μ m, and the rolling surface arithmetic mean surface roughness of spherical roller is 0.05～0.28 μ m.
Self-aligning roller bearing of the present utility model, by the relation between the radius of curvature in the axial direction of restriction outer ring rolling surface, inner ring rolling surface, roller rolling surface, and reduced the tangential force acting between spherical roller and Internal and external cycle, thus, can suppress heating generation and improve the life-span.
Accompanying drawing explanation
Fig. 1 is the self-aligning roller bearing with cutting retainer of mode of execution of the present utility model.
Fig. 2 is the self-aligning roller bearing with pressing cage of mode of execution of the present utility model.
Embodiment
The retainer 4 that the self-aligning roller bearing of present embodiment has outer ring 1, has the inner ring 2 of a pair of raceway, is located at the multiple spherical rollers 3 between outer ring 1 and inner ring 2 and spherical roller 3 is kept in the mode of rolling freely along two row.Retainer 4 can adopt the cutting retainer shown in Fig. 1, also can adopt the pressing cage shown in Fig. 2.
In the present embodiment, the relation between the radius of curvature rc in the radius of curvature rb in the radius of curvature ra in the axial direction of outer ring rolling surface, the axial direction of inner ring raceway face and the axial direction of above-mentioned rolling surface, meets whole following formula (1)～(3):
0.945≤rc/ra≤0.995…（1）
0.945≤rc/rb≤0.995…（2）
rc/rb≤rc/ra…（3）。
Above-mentioned formula (1)～(3) are described.In order to extend the life-span of self-aligning roller bearing, need to be suppressed at skidding and reducing tangential force of producing between spherical roller and inner ring, and reduce interface pressure.In order to reduce interface pressure, as long as increase the area of contact producing in the time that spherical roller contact with Internal and external cycle, and make radius of curvature in the axial direction of inner ring and outer ring, and the axial direction of spherical roller on radius of curvature approaching.Thus, it is more than 0.945 making the ratio rc/ra between spherical roller and outer ring, and to make the ratio rc/rb between spherical roller and inner ring be more than 0.945.On the other hand, if the area of contact producing when spherical roller contacts with Internal and external cycle is excessive, acting on skidding between spherical roller and Internal and external cycle can become large and increase tangential force, thus, produce and can reduce the inhibition of skidding that the above-mentioned surface roughness of passing through increasing outer ring rolling surface obtains, and, can be created in the problem of surface of contact heating etc.Thus, making the ratio rc/ra between spherical roller and outer ring is below 0.995, and to make the ratio rc/rb between spherical roller and inner ring be below 0.995.And, for retainer shaft friction equilibrium of forces upwards, and make rc/rb≤rc/ra.
In addition, be preferably, the aperture surface diameter of inner ring is more than 60mm but not enough 140mm, and the inner play of bearing is 50～120 μ m, and the circularity of spherical roller is 0.1～1.7 μ m, and the rolling surface arithmetic mean surface roughness of spherical roller is 0.01～0.16 μ m.
In addition, be preferably, the aperture surface diameter of inner ring is more than 140mm but not enough 300mm, and the inner play of bearing is 80～180 μ m, and the circularity of spherical roller is 0.1～2.2 μ m, and the rolling surface arithmetic mean surface roughness of spherical roller is 0.02～0.20 μ m.
And, being preferably, the aperture surface diameter of inner ring is 300mm～450mm, and the inner play of bearing is 100～300 μ m, and the circularity of spherical roller is 0.2～3.5 μ m, and the rolling surface arithmetic mean surface roughness of spherical roller is 0.05～0.28 μ m.
According to self-aligning roller bearing of the present utility model, by the relation between the radius of curvature in the axial direction of restriction outer ring rolling surface, inner ring rolling surface, roller rolling surface, and reduce the tangential force acting between spherical roller and Internal and external cycle, thus, can suppress the generation of heating and improve the life-span.
Claims (4)
1. a self-aligning roller bearing, it has: the outer ring on inner peripheral surface with outer race track face; On outer circumferential face, there is the inner ring of inner race track face; With multiple spherical rollers, roll and be disposed in freely between described outer race track face and described inner race track face, and there is the rolling surface relative with described outer race track face and described inner race track face, it is characterized in that,
Relation between radius of curvature rc in the axial direction of the radius of curvature rb in the radius of curvature ra in the axial direction of described outer ring rolling surface, the axial direction of described inner ring raceway face and the rolling surface of described spherical roller, meets whole following formula (1)～(3):
0.945≤rc/ra≤0.995…（1）
0.945≤rc/rb≤0.995…（2）
rc/rb≤rc/ra…（3）。
2. self-aligning roller bearing according to claim 1, it is characterized in that, the aperture surface diameter of described inner ring is more than 60mm but not enough 140mm, the inner play of bearing is 50～120 μ m, the circularity of described spherical roller is 0.1～1.7 μ m, and the rolling surface arithmetic mean surface roughness of described spherical roller is 0.01～0.16 μ m.
3. self-aligning roller bearing according to claim 1, it is characterized in that, the aperture surface diameter of described inner ring is more than 140mm but not enough 300mm, the inner play of bearing is 80～180 μ m, the circularity of described spherical roller is 0.1～2.2 μ m, and the rolling surface arithmetic mean surface roughness of described spherical roller is 0.02～0.20 μ m.
4. self-aligning roller bearing according to claim 1, it is characterized in that, the aperture surface diameter of described inner ring is 300mm～450mm, the inner play of bearing is 100～300 μ m, the circularity of described spherical roller is 0.2～3.5 μ m, and the rolling surface arithmetic mean surface roughness of described spherical roller is 0.05～0.28 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003918.7U CN203670467U (en) | 2014-01-03 | 2014-01-03 | Self-aligningroller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003918.7U CN203670467U (en) | 2014-01-03 | 2014-01-03 | Self-aligningroller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670467U true CN203670467U (en) | 2014-06-25 |
Family
ID=50966769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420003918.7U Expired - Lifetime CN203670467U (en) | 2014-01-03 | 2014-01-03 | Self-aligningroller bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911528A (en) * | 2020-07-28 | 2020-11-10 | 山东华工轴承有限公司 | Vibrating screen self-aligning roller bearing |
| WO2022051878A1 (en) * | 2020-09-08 | 2022-03-17 | 远景能源有限公司 | Self-aligning roller bearing of asymmetric structure |
-
2014
- 2014-01-03 CN CN201420003918.7U patent/CN203670467U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911528A (en) * | 2020-07-28 | 2020-11-10 | 山东华工轴承有限公司 | Vibrating screen self-aligning roller bearing |
| WO2022051878A1 (en) * | 2020-09-08 | 2022-03-17 | 远景能源有限公司 | Self-aligning roller bearing of asymmetric structure |
| CN114502851A (en) * | 2020-09-08 | 2022-05-13 | 远景能源有限公司 | Self-aligning roller bearing with asymmetric structure |
| GB2612486A (en) * | 2020-09-08 | 2023-05-03 | Envision Energy Co Ltd | Self-aligning roller bearing of asymmetric structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |