CN205978124U - Pair angular contact bearing's location pre -tightening structure - Google Patents
Pair angular contact bearing's location pre -tightening structure Download PDFInfo
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- CN205978124U CN205978124U CN201620847572.8U CN201620847572U CN205978124U CN 205978124 U CN205978124 U CN 205978124U CN 201620847572 U CN201620847572 U CN 201620847572U CN 205978124 U CN205978124 U CN 205978124U
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- angular contact
- contact bearing
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- outer ring
- spacer
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Abstract
The utility model relates to a bearing application technical field discloses a pair angular contact bearing's location pre -tightening structure, and it includes that in pivot (1) two of pivot (1) and suit pair angular contact bearing (2), is provided with between two angular contact bearing (2) to be used for supporting respectively the inner circle of two angular contact bearing (2) and inner ring spacer (3) and outer ring spacer (4) that coefficient of linear expansion is different of outer lane, this structure still include one through lock nut (5) of thread tightening in pivot (1), terminal surface of this lock nut (5) tightly touches with the terminal surface that inner ring spacer (3) and outer ring spacer (4) were kept away from in one of them angular contact bearing (2). Pair pretightning force between the angular contact bearing through the adjustable and locking of lock nut (5), through the temperature back that risees, the elongation of inner ring spacer (3) and outer ring spacer (4) is different, and the pretightning force of automatically regulated bearing improves bearing performance to increase substantially and pair the limit speed of bearing.
Description
Technical field
This utility model is related to bearing applied technical field, specifically a kind of positioning pretension of pairing angular contact bearing
Structure.
Background technology
Pairing angular contact bearing in use can be by applying along its axis direction on bearing inner race or outer ring
One constant power, and keep this power to make inside and outside circle produce relative movement vertically, on the one hand can eliminate the trip of Bearing inner
Gap, on the other hand can force rolling element and inside and outside circle to be in close contact again simultaneously, and produce certain deformation in contact position, make to join
Angular contact bearings reach increase bearing rigidity, reduce noise level, improve the purposes such as running accuracy.
But in the prior art, pairing angular contact bearing using positioning pretension after can reach capacity rotating speed relatively
Low, after this limit speed, easily serious heating and stuck phenomenon in bearing, causes bearing life to be greatly lowered, its
Reason is：Bearing in use can fever expansion, at high speeds, rolling element has " throw outward " trend simultaneously, due to
Positioning pretension largely limits the relative movement between bearing, therefore causes the pretension amount of bearing to increase, and then rubs
Heating aggravation, thus lead to the damage of bearing.
Utility model content
This utility model aims to provide a kind of positioning pre-pressing structure of pairing angular contact bearing, can have ensureing bearing
In the case of sufficiently rigid, increase substantially the limit speed of pairing bearing.
For solving above technical problem, a kind of positioning pre-pressing structure of pairing angular contact bearing of the present utility model includes turning
Axle and be sleeved in rotating shaft two pairing angular contact bearings, is provided between described two angular contact bearings for supporting two
The cone spacer of the inner ring of individual angular contact bearing and for support two angular contact bearings outer ring outer ring spacer, and this cone spacer and
The linear expansion coefficient of outer ring spacer is different；This structure also includes a locking nut being threadedly secured in rotating shaft, this lock
One end face and one of angular contact bearing of jack panel tightly touch away from the end face of cone spacer and outer ring spacer.
As a kind of embodiment of the present utility model, two described angular contact bearings adopt back-to-back matching form, institute
The linear expansion coefficient stating outer ring spacer is less than the linear expansion coefficient of cone spacer.
As a kind of embodiment of the present utility model, described cone spacer is made of copper, and outer ring spacer adopts austenite not
Rust steel is made.
As another embodiment of the present utility model, two described angular contact bearings are using face-to-face or the joining of series connection
To form, the linear expansion coefficient of described outer ring spacer is more than the linear expansion coefficient of cone spacer.
As another embodiment of the present utility model, described cone spacer material is made using austenitic stainless steel, outward
Spacer ring is made of copper.
Beneficial effect
In prior art, after matching angular contact bearing operating temperature and raise, setting equal inside and outside of linear expansion coefficient
The pretension amount of spacer ring or the pairing bearing being not provided with inside and outside spacer ring dramatically increases, and leads to bearing heating more serious, thus occurring
Adverse effect.And after increasing the inside and outside spacer ring that linear expansion coefficient does not wait, after being raised due to temperature, the elongation of inside and outside spacer ring
Difference, thus the pretension amount of self-aligning bearing, thus improving the operating condition of bearing, improves bearing performance.It is arranged on rotating shaft
On locking nut can according to the model of different speed demand and different angular contact bearings to pairing angular contact bearing enter
The positioning pretension of row axial direction and locking, using very convenient.To sum up, using a kind of pairing angular contact bearing of the present utility model
Positioning pre-pressing structure, can ensure pairing angular contact bearing possess sufficiently rigid in the case of, increase substantially pairing axle
The limit speed holding.
Brief description
Fig. 1 is a kind of generalized section of the positioning pre-pressing structure of pairing angular contact bearing of the present utility model；
In figure labelling：1st, rotating shaft, 2, angular contact bearing, 3, cone spacer, 4, outer ring spacer, 5, locking nut.
Specific embodiment
As shown in figure 1, a kind of positioning pre-pressing structure of pairing angular contact bearing of the present utility model includes rotating shaft 1 and set
It is contained in two pairing angular contact bearings 2 in rotating shaft 1, be provided between described two angular contact bearings 2 for supporting two angles
The cone spacer 3 of the inner ring of contact bearing 2 and for support two angular contact bearings（2）Outer ring outer ring spacer 4, and this cone spacer
3 and outer ring spacer 4 linear expansion coefficient different；This structure also includes a locking nut 5, and rotating shaft 1 offers external screw thread, should
Locking nut 5 is threadedly secured in rotating shaft 1, and an end face of this locking nut 5 is remote with one of angular contact bearing 2
End face from cone spacer 3 and outer ring spacer 4 tightly touches, and the radius of locking nut 5 is corresponding to the bearing inner race of angular contact bearing 2, can root
Model according to different speed demand and different bearings is joined to one of them by displacement in rotating shaft 1 for the locking nut 5
The bearing inner race of angular contact bearings 2 apply axial force so that cone spacer 3 and outer ring spacer 4 respectively with two angular contact bearings
Inner ring and outer ring keep certain pretightning force, realize positioning pretension and locking to this pairing angular contact bearing structure.
As a kind of embodiment of the present utility model, two angular contact bearings 2 adopt back-to-back matching form, cone spacer
3 materials are copper, and outer ring spacer 4 material is austenitic stainless steel.
As another embodiment of the present utility model, two angular contact bearings 2 are using face-to-face or series connection pairing
Form, cone spacer 3 material is austenitic stainless steel, and outer ring spacer 4 material is copper.
Two embodiments of the present utility model are only the cone spacers according to done by angular contact bearing difference matching form
And the adjustment of outer ring spacer material, be all raised using temperature after, the elongation of cone spacer and outer ring spacer is different, can automatically adjust
The pretension amount of bearing, thus improving the operating condition of bearing, improving bearing performance, so that pairing angular contact bearing structure is had simultaneously
The advantages of rigidity of positioning firmly beforehand meanses is strong, noise is low, running accuracy is high, can be greatly improved pairing angular contact bearing structure again
Limit speed.
The relatively low austenitic stainless steel of the linear expansion coefficient taken and of a relatively high copper are as present embodiment
Middle cone spacer or the material of outer ring spacer, only describe specific embodiment of the present utility model in detail, not to this utility model
Cone spacer and outer ring spacer make restriction in material, as long as therefore using the different material of two kinds of different linear expansion coefficients, such as
The cone spacer of making and the outer ring spacers such as metal, alloy or chemical industry material, all fall within protection domain of the present utility model.
Claims (5)
1. a kind of positioning pre-pressing structure of pairing angular contact bearing, this structure includes rotating shaft（1）And it is sleeved on rotating shaft（1）On
Two pairing angular contact bearings（2）It is characterised in that：Described two angular contact bearings（2）Between be provided with for support two
Angular contact bearing（2）Inner ring cone spacer（3）With for support two angular contact bearings（2）Outer ring outer ring spacer（4）, and
This cone spacer（3）And outer ring spacer（4）Linear expansion coefficient different；This structure also includes one and is threadedly secured to rotating shaft
（1）On locking nut（5）, this locking nut（5）An end face and one of angular contact bearing（2）Away from cone spacer
（3）And outer ring spacer（4）End face tightly touch.
2. according to claim 1 a kind of pairing angular contact bearing positioning pre-pressing structure it is characterised in that：Described in two
Angular contact bearing（2）Using back-to-back matching form, described outer ring spacer（4）Linear expansion coefficient be less than cone spacer（3）Line
The property coefficient of expansion.
3. according to claim 2 a kind of pairing angular contact bearing positioning pre-pressing structure it is characterised in that：Described interior every
Circle（3）It is made of copper, outer ring spacer（4）Made using austenitic stainless steel.
4. according to claim 1 a kind of pairing angular contact bearing positioning pre-pressing structure it is characterised in that：Described in two
Angular contact bearing（2）Using face-to-face or series connection matching form, described outer ring spacer（4）Linear expansion coefficient be more than cone spacer
（3）Linear expansion coefficient.
5. according to claim 4 a kind of pairing angular contact bearing positioning pre-pressing structure it is characterised in that：Described interior every
Circle（3）Made using austenitic stainless steel, outer ring spacer（4）It is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620847572.8U CN205978124U (en) | 2016-08-08 | 2016-08-08 | Pair angular contact bearing's location pre -tightening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620847572.8U CN205978124U (en) | 2016-08-08 | 2016-08-08 | Pair angular contact bearing's location pre -tightening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205978124U true CN205978124U (en) | 2017-02-22 |
Family
ID=58030222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620847572.8U Active CN205978124U (en) | 2016-08-08 | 2016-08-08 | Pair angular contact bearing's location pre -tightening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205978124U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931377A (en) * | 2018-06-21 | 2018-12-04 | 洛阳轴承研究所有限公司 | A kind of precision bearing system internal space ring and external space ring quantifies polishing method |
| CN109139719A (en) * | 2017-06-27 | 2019-01-04 | 斯凯孚公司 | Preload in bearing assembly is adjusted |
| CN109163018A (en) * | 2018-10-12 | 2019-01-08 | 西安交通大学 | A kind of main shaft pretightning force adaptive regulation method based on negative poisson's ratio structure |
| CN113294432A (en) * | 2021-04-27 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group |
| CN113294431A (en) * | 2021-04-27 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group of series connection matched stack |
-
2016
- 2016-08-08 CN CN201620847572.8U patent/CN205978124U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139719A (en) * | 2017-06-27 | 2019-01-04 | 斯凯孚公司 | Preload in bearing assembly is adjusted |
| CN108931377A (en) * | 2018-06-21 | 2018-12-04 | 洛阳轴承研究所有限公司 | A kind of precision bearing system internal space ring and external space ring quantifies polishing method |
| CN109163018A (en) * | 2018-10-12 | 2019-01-08 | 西安交通大学 | A kind of main shaft pretightning force adaptive regulation method based on negative poisson's ratio structure |
| CN109163018B (en) * | 2018-10-12 | 2020-02-14 | 西安交通大学 | Main shaft pre-tightening force self-adaptive adjusting method based on negative Poisson ratio structure |
| CN113294432A (en) * | 2021-04-27 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group |
| CN113294431A (en) * | 2021-04-27 | 2021-08-24 | 洛阳轴承研究所有限公司 | Thrust bearing group of series connection matched stack |
| CN113294431B (en) * | 2021-04-27 | 2022-08-30 | 洛阳轴承研究所有限公司 | Thrust bearing group of series connection matched stack |
| CN113294432B (en) * | 2021-04-27 | 2022-09-02 | 洛阳轴承研究所有限公司 | Thrust bearing group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180521 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: Luoyang Bearing Research Institute Address before: 471000 Fenghua Road 6, Luoyang hi tech Development Zone, Luoyang, Henan Patentee before: Zhouyan Science and Technology Co., Ltd., Luoyang |
|
| TR01 | Transfer of patent right |