CN204387128U - Bearing pre-tightening structure - Google Patents
Bearing pre-tightening structure Download PDFInfo
- Publication number
- CN204387128U CN204387128U CN201420779715.7U CN201420779715U CN204387128U CN 204387128 U CN204387128 U CN 204387128U CN 201420779715 U CN201420779715 U CN 201420779715U CN 204387128 U CN204387128 U CN 204387128U
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- bearing
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- spring
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Abstract
Bearing pre-tightening structure, comprise bearing support, rotating shaft, bearing, rotating shaft is provided with one for the step surface of spring bearing inner ring lower end surface, rotating shaft is bolted with one for pushing up the locking nut of pressure bearing inner race upper-end surface downwards, there is between locking nut and bearing outer ring upper-end surface a gap, be provided with one in bearing support and be actively socketed on rotating shaft outside and the pad be positioned at below bearing outer ring, multiple spring is provided with between the lower surface of pad and bearing support, the plurality of spring central shaft circumference array around the shaft, bearing support is provided with and spring mounting groove one to one, spring to be embedded in mounting groove and to be clamped between pad and the diapire of mounting groove, pad is upwards pushed up pressure to make pad support in the elastic stress of bearing outer ring lower end surface for providing one by the plurality of spring.The utility model overcomes the impact that rotating shaft heats up on bearing, while enough ensureing that rotating shaft has higher machining accuracy, can also extend the working life of bearing.
Description
Technical field
The utility model relates to a kind of bearing pre-tightening structure.
Background technique
What rotating shaft normally utilized bearing pivotable to coordinate is arranged on bearing support, can work normally in order to ensure bearing, also needs to install in bearing support the parts that location card mandrel holds, and applies axial clamping force to bearing; Traditional bearing location card locking structure only can be applicable to the rotating shaft slowly run usually, and bearing can be caused to occur the defects such as heating value is large, working life is short.
Model utility content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of bearing pre-tightening structure, and it effectively can extend the working life of bearing.
For achieving the above object, the utility model adopts following technological scheme:
Bearing pre-tightening structure, comprise bearing support, the rotating shaft of cross-under in bearing support, and bearing rotating shaft is articulated in bearing support, rotating shaft is provided with one for the step surface of spring bearing inner ring lower end surface, rotating shaft is bolted with one for pushing up the locking nut of pressure bearing inner race upper-end surface downwards, there is between locking nut and bearing outer ring upper-end surface a gap, be provided with one in bearing support and be actively socketed on rotating shaft outside and the pad be positioned at below bearing outer ring, multiple spring is provided with between the lower surface of pad and bearing support, the plurality of spring central shaft circumference array around the shaft, bearing support is provided with and spring mounting groove one to one, spring to be embedded in mounting groove and to be clamped between pad and the diapire of mounting groove, pad is upwards pushed up pressure to make pad support in the elastic stress of bearing outer ring lower end surface for providing one by the plurality of spring.
Locking nut lower surface is provided with near the position of rotating shaft the flange that a top is pressed on bearing inner race upper-end surface.
Pad top surface edge is provided with the lug boss that top is pressed on bearing outer ring lower end surface.
The beneficial effects of the utility model are:
Compared to prior art, the utility model can meet the high speed rotating requirement of rotating shaft, when rotating shaft heats up, the pretightening force of bearing can be adjusted accordingly by the extending amount of spring, thus under any circumstance, bearing can both be made to be in desirable Pre strained state, overcome the impact that rotating shaft heats up on bearing, while enough ensureing that rotating shaft has higher machining accuracy, the working life of bearing can also be extended.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Wherein: 10, bearing support; 11, mounting groove; 20, rotating shaft; 21, step surface; 30, bearing; 31, outer ring; 32, inner ring; 40, locking nut; 41, flange; 50, pad; 60, spring.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
As shown in Figure 1, for a kind of bearing pre-tightening structure of the present utility model, it comprises bearing support 10, rotating shaft 20, bearing 30, locking nut 40, pad 50 and spring 60, its shaft 20 cross-under is in bearing support 10, bearing 30 is for being articulated in bearing support 10 by rotating shaft 20, rotating shaft 20 is provided with a step surface 21, inner ring 32 lower end surface of bearing 30 is supported by this step surface 21, locking nut 40 is screwed onto in rotating shaft 20, it is for pushing up pressure downwards by inner ring 32 upper-end surface of bearing 30, and this locking nut 40 forms a gap with the upper-end surface, outer ring 31 of bearing 30, that is, locking nut 40 does not contact with the upper-end surface, outer ring 31 of bearing 30, pad 50 be positioned at the inner and activity of bearing support 10 to be socketed in rotating shaft 20 outside, and, this pad 50 is positioned at below the outer ring 31 of bearing 30, the upper surface of pad 50 is supported in the lower end surface of outer ring 31, spring 60 is installed between the lower surface of pad 50 and bearing support 10, pad 50 is upwards pushed up pressure by the elastic stress that this spring 60 provides, support force outer ring 31 upwards being pushed up pressure can be formed to make pad 50.
The utility model operationally, locking nut 40 pushes up the inner ring 32 that last item holds 30, the downward pretightening force of an axis is applied to inner ring 32,60, spring is by promoting pad 50, axis elastic pre-stress is upwards applied to the outer ring 31 of bearing 30, and this elastic pre-stress is identical with the pretightening force that above-mentioned locking nut 40 pairs of bearing inner races 32 apply all the time, thus bearing 30 is made to be in a correct Pre strained state all the time.
In addition, the utility model is when assembling, and by changing spring 60 or pad 50, adjust the pretightening force to bearing 30 outer ring 31, after rotating shaft 20, bearing 30 and bearing support 10 are in place, spring 60 is compressed, and its elastic stress produced makes bearing 30 pretension; When rotating shaft 20 high speed rotating, rotating shaft 20 temperature raises, under the principle of expanding with heat and contract with cold, rotating shaft 20 produces small extending amount, now, what spring 60 also can be synchronous is flexible, thus makes bearing 30 be in desirable Pre strained state all the time, this can not only ensure that rotating shaft 20 has higher machining accuracy, can also extend the working life of bearing 30 simultaneously.
The utility model arranges multiple spring 60 altogether, the plurality of spring 60 around the shaft 20 central shaft circumference array, bearing support 10 is provided with and spring 60 mounting groove 11 one to one, spring 60 to be embedded in mounting groove 11 and to be held between pad 50 and the diapire of mounting groove, and equally distributed multiple spring 60 can make pretightening force be distributed in the lower end surface of outer ring 31 uniformly.Owing to spring 60 being placed in the mounting groove 11 of axially setting, the flexible of mounting groove 11 pairs of springs 60 is utilized to play the effect axially limited, thus the elastic stress of multiple spring 60 is evenly distributed on pad 50, guarantee that pad 50 can better support outer ring 31.
In order to avoid locking nut 40 contacts with the upper-end surface, outer ring 31 of bearing 30, at locking nut 40 lower surface, the position of rotating shaft 20 is provided with the flange 41 that a top is pressed on inner ring 32 upper-end surface of bearing 30.Same reason, in order to avoid pad 50 contacts with inner ring 32 lower surface of bearing 30, is provided with in pad 50 top surface edge the lug boss that top is pressed on the lower end surface, outer ring 31 of bearing 30.
To one skilled in the art, according to technological scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (3)
1. bearing pre-tightening structure, comprise bearing support, the rotating shaft of cross-under in bearing support, and bearing rotating shaft is articulated in bearing support, it is characterized in that, rotating shaft is provided with one for the step surface of spring bearing inner ring lower end surface, rotating shaft is bolted with one for pushing up the locking nut of pressure bearing inner race upper-end surface downwards, there is between locking nut and bearing outer ring upper-end surface a gap, be provided with one in bearing support and be actively socketed on rotating shaft outside and the pad be positioned at below bearing outer ring, multiple spring is provided with between the lower surface of pad and bearing support, the plurality of spring central shaft circumference array around the shaft, bearing support is provided with and spring mounting groove one to one, spring to be embedded in mounting groove and to be clamped between pad and the diapire of mounting groove, pad is upwards pushed up pressure to make pad support in the elastic stress of bearing outer ring lower end surface for providing one by the plurality of spring.
2. bearing pre-tightening structure as claimed in claim 1, it is characterized in that, locking nut lower surface is provided with near the position of rotating shaft the flange that a top is pressed on bearing inner race upper-end surface.
3. bearing pre-tightening structure as claimed in claim 1, is characterized in that, pad top surface edge is provided with the lug boss that top is pressed on bearing outer ring lower end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779715.7U CN204387128U (en) | 2014-12-10 | 2014-12-10 | Bearing pre-tightening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779715.7U CN204387128U (en) | 2014-12-10 | 2014-12-10 | Bearing pre-tightening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204387128U true CN204387128U (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420779715.7U Active CN204387128U (en) | 2014-12-10 | 2014-12-10 | Bearing pre-tightening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204387128U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366686A (en) * | 2017-07-24 | 2017-11-21 | 南通山口精工机电有限公司 | A kind of axle and bearing jointing structure |
| CN107643172A (en) * | 2017-10-30 | 2018-01-30 | 南京磁谷科技有限公司 | A kind of mounting structure of upper angular contact bearing in overspeed test bench main frame |
| CN107701596A (en) * | 2017-10-30 | 2018-02-16 | 南京磁谷科技有限公司 | A kind of top chock in overspeed test bench main frame |
| CN107830065A (en) * | 2017-12-04 | 2018-03-23 | 洛阳理工学院 | Paired thrust ball bearing pre-tightening apparatus |
| CN110065031A (en) * | 2019-04-30 | 2019-07-30 | 中国航发南方工业有限公司 | Bearing assembling tooling and bearing assembly method |
| CN110145548A (en) * | 2019-06-13 | 2019-08-20 | 南通山口精工机电有限公司 | A kind of rotor component construction |
| CN110319123A (en) * | 2018-03-29 | 2019-10-11 | 通用电气全球采购有限责任公司 | Bearing assembly, method and system |
| CN111082594A (en) * | 2019-12-31 | 2020-04-28 | 中国科学院空间应用工程与技术中心 | Space linear motion mechanism and on-orbit inspection device |
| CN112503080A (en) * | 2020-12-09 | 2021-03-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Guiding, positioning, connecting and locking integrated device |
| CN113483026A (en) * | 2021-07-01 | 2021-10-08 | 厦门势拓伺服科技股份有限公司 | Electric main shaft lower bearing pressing spacer structure |
| CN114087272A (en) * | 2021-11-29 | 2022-02-25 | 中国航发哈尔滨轴承有限公司 | Pre-tightening washer |
-
2014
- 2014-12-10 CN CN201420779715.7U patent/CN204387128U/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366686A (en) * | 2017-07-24 | 2017-11-21 | 南通山口精工机电有限公司 | A kind of axle and bearing jointing structure |
| CN107643172A (en) * | 2017-10-30 | 2018-01-30 | 南京磁谷科技有限公司 | A kind of mounting structure of upper angular contact bearing in overspeed test bench main frame |
| CN107701596A (en) * | 2017-10-30 | 2018-02-16 | 南京磁谷科技有限公司 | A kind of top chock in overspeed test bench main frame |
| CN107643172B (en) * | 2017-10-30 | 2023-11-24 | 南京磁谷科技有限公司 | Mounting structure of upper angular contact bearing in overspeed test stand host |
| CN107830065A (en) * | 2017-12-04 | 2018-03-23 | 洛阳理工学院 | Paired thrust ball bearing pre-tightening apparatus |
| CN110319123A (en) * | 2018-03-29 | 2019-10-11 | 通用电气全球采购有限责任公司 | Bearing assembly, method and system |
| CN110319123B (en) * | 2018-03-29 | 2022-07-05 | Ip传输控股公司 | Bearing assembly, method and system for detecting anomalies in a bearing assembly |
| CN110065031A (en) * | 2019-04-30 | 2019-07-30 | 中国航发南方工业有限公司 | Bearing assembling tooling and bearing assembly method |
| CN110145548A (en) * | 2019-06-13 | 2019-08-20 | 南通山口精工机电有限公司 | A kind of rotor component construction |
| CN111082594A (en) * | 2019-12-31 | 2020-04-28 | 中国科学院空间应用工程与技术中心 | Space linear motion mechanism and on-orbit inspection device |
| CN111082594B (en) * | 2019-12-31 | 2021-07-27 | 中国科学院空间应用工程与技术中心 | Space linear motion mechanism and on-orbit inspection device |
| CN112503080A (en) * | 2020-12-09 | 2021-03-16 | 中国空气动力研究与发展中心高速空气动力研究所 | Guiding, positioning, connecting and locking integrated device |
| CN113483026A (en) * | 2021-07-01 | 2021-10-08 | 厦门势拓伺服科技股份有限公司 | Electric main shaft lower bearing pressing spacer structure |
| CN114087272A (en) * | 2021-11-29 | 2022-02-25 | 中国航发哈尔滨轴承有限公司 | Pre-tightening washer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |