CN204387130U - A kind of novel bearing pre-pressing structure - Google Patents
A kind of novel bearing pre-pressing structure Download PDFInfo
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- CN204387130U CN204387130U CN201420778360.XU CN201420778360U CN204387130U CN 204387130 U CN204387130 U CN 204387130U CN 201420778360 U CN201420778360 U CN 201420778360U CN 204387130 U CN204387130 U CN 204387130U
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- bearing
- bearing support
- end surface
- pressing structure
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Abstract
A kind of novel bearing pre-pressing structure, comprise bearing support, the cross-under rotating shaft in bearing support and bearing rotating shaft be articulated in bearing support, rotating shaft being bolted with one for pushing up the bearing lock nuts of pressure bearing inner race upper-end surface downwards, rotating shaft being provided with one for the step surface of spring bearing inner ring lower end surface; Bearing support diapire is provided with the top splenium held for upwards pushing up last item; Bearing support outer surface is arranged with bearing support overcoat, puts the elastic member be provided with for upwards pushing up last item bearing outside bearing support.The purpose of this utility model is to provide a kind of novel bearing pre-pressing structure, can provide the pretightening force providing bearing required in the running flexibly, increase the service life.
Description
Technical field
The utility model relates to field of machining, is specifically related to a kind of novel bearing pre-pressing structure.
Background technique
When rotating shaft operates, bearing produces heat because of rotation, and rotating shaft will extend shortening due to the effect of expanding with heat and contract with cold, the bearing be articulated in rotating shaft can move up and down, and bearing can not be run well, and even seize phenomenon occurs, cause shorten the working life of bearing, reduce the running accuracy of main shaft.
Model utility content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of novel bearing pre-pressing structure, can provide the pretightening force providing bearing required in the running flexibly, increase the service life.
For achieving the above object, the utility model adopts following technological scheme:
A kind of novel bearing pre-pressing structure, comprise bearing support, the cross-under rotating shaft in bearing support and bearing rotating shaft be articulated in bearing support, rotating shaft being bolted with one for pushing up the bearing lock nuts of pressure bearing inner race upper-end surface downwards, rotating shaft being provided with one for the step surface of spring bearing inner ring lower end surface; Bearing support diapire is provided with the top splenium held for upwards pushing up last item; Bearing support outer surface is arranged with bearing support overcoat, puts the elastic member be provided with for upwards pushing up last item bearing outside bearing support.
Preferably, top splenium is arranged the jut for pushing up last item bearing outer-ring.
Preferably, put and be provided with equally distributed axial blind hole outside bearing support, elastic member is installed between blind hole diapire and bearing support.
Preferably, elastic member is spring.
Preferably, steel ball sleeve is provided with between bearing support and bearing support overcoat.
Preferably, the top and bottom of steel ball sleeve are equipped with seal ring.
Preferably, be provided with upper bearing (metal) and lower bearing in bearing support, bearing lock nuts is arranged at the upper-end surface of upper bearing (metal) inner ring, and step surface is arranged at the lower end surface of lower bearing inner ring.
Preferably, between the lower end surface of upper bearing (metal) inner ring and the upper-end surface of lower bearing inner ring, be provided with inner ring spacer, between the lower end surface of upper bearing (metal) outer ring and the upper-end surface of lower bearing outer ring, be provided with the outer shroud spacer matched with inner ring spacer.
Preferably, the upper end of upper bearing (metal) is provided with the bearing gland for pushing up the upper-end surface pressing bearing outer ring.
The beneficial effects of the utility model are:
Novel bearing pre-pressing structure of the present utility model, arranges some elastic member, rotating shaft, bearing be in place after by overlapping at bearing support outward, bearing support abuts with elastic member, elastic member is compressed, and to bearing support generation thrust upwards, makes bearing produce pretension; Carry out free adjusting pretightening force by reducing or increase elastic member in pairs simultaneously; In addition, this device is also provided with steel ball sleeve and seal ring, when rotating shaft rotates, can reduce the shock between bearing support and bearing support overcoat and friction, bearing support is moved more flexible, improves the running accuracy of main shaft, extend the working life of bearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Reference character: 10, rotating shaft; 11, bearing lock nuts; 20, upper bearing (metal); 21, bearing gland; 22, bearing gland; 30, bearing support; 40, bearing support overcoat; 41, elastic member; 50, steel ball sleeve; 60, seal ring.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
A kind of novel bearing pre-pressing structure as shown in Figure 1, comprises rotating shaft 10, bearing, bearing support 30 and bearing support overcoat 40.Rotating shaft 10 is connected in bearing support, bearing is used for rotating shaft 10 to be articulated in bearing support 30, rotating shaft 10 is bolted with bearing lock nuts 11, bearing lock nuts 11 is for pushing up the upper-end surface of pressure bearing inner race downwards, rotating shaft 10 is also provided with one for the step surface of spring bearing inner ring lower end surface, bearing inner race is clamped between bearing lock nuts 11 and step surface, is fixed in rotating shaft 10.Bearing support 30 diapire is provided with the top splenium held for upwards pushing up last item, preferably, top splenium is provided with the jut for pushing up last item bearing outer-ring, the setting of jut enables bearing inner race and bearing support diapire form gap, is convenient to move up and down in process at bearing support drive bearing outer ring to move up and down relative to bearing inner race.
Bearing support 30 outer surface is arranged with bearing support overcoat 40, bearing support overcoat 40 is provided with elastic member 41, and elastic member 41, for upwards pushing up last item bearing 30, drives bearing support 30 upwards to push up last item bearing outer-ring, pretightening force required when providing bearing operation then.Preferably, bearing support overcoat 40 upper-end surface is evenly distributed with bearing blind hole, and blind hole can be set to contour blind hole herein, guarantees that the pretension effect of the elastic member generation be installed on wherein is consistent.Elastic member 41 is arranged between blind hole diapire and bearing support, this structure facilitates adjustable elastic part count, can pretightening force needed for flexible modulation bearing operation, in the present embodiment, elastic member is preferably spring, can select other elastic elements in other embodiments.
Preferably, steel ball sleeve 50 is provided with between bearing support 30 and bearing support overcoat 40, when rotating shaft 10 operates, bearing support 30 can move up and down, the steel ball sleeve 50 be now arranged between bearing support 30 and bearing support overcoat 40 just can play the effect of the friction reduced between bearing support and bearing support overcoat, bearing support 30 is moved more flexible; Further, be provided with seal ring 60 at the upper and lower end of steel ball sleeve 50, the shock between steel ball sleeve 50 and bearing support overcoat 40 can be slowed down, reduce the wearing and tearing between bearing support 30 and bearing support overcoat 40, improve the running accuracy of main shaft.
Preferably, in this device, upper bearing (metal) 20 and lower bearing 22 can be set in bearing support, inner ring spacer and outer shroud spacer are set between upper bearing (metal) 20 and lower bearing 22, inner ring spacer is arranged between the lower end surface of upper bearing (metal) 20 inner ring and the upper-end surface of lower bearing 22 inner ring, outer shroud spacer is arranged between the lower end surface of upper bearing (metal) 20 outer ring and the upper-end surface of lower bearing 22 outer ring, overcoat spacer and inner ring spacer match, for strengthening the operation rigidity of two bearings.Preferably, upper bearing (metal) upper end is also provided with bearing gland 21, and bearing gland 21 is connected to the upper-end surface of upper bearing (metal) 20 outer ring, bearing 20 outer ring is pressed for top, ensure that when bearing operation metal (upper upper and lower displacement is consistent, the Pre strained state be consistent, to reach better pretensioning effect.
Operationally, first elastic member is installed in the blind hole of bearing support overcoat, whole bearing support is placed in bearing support overcoat and fixes, now, the upper end of elastic member abuts with bearing support, and spring is compressed, to bearing support applying thrust upwards, bearing support moves upward, and the lower end surface of bearing outer ring also by the thrust upwards of the jut bottom bearing support, can make bearing pre-tightened; And when rotating shaft entry into service, certain heat can be produced, rotating shaft can produce small extending amount due to the effect of expanding with heat and contract with cold, and elastic member also can synchronization telescope, bearing is operated all the time under suitable Pre strained state, ensures the precision of bearing operation.
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 (9)
1. a novel bearing pre-pressing structure, comprise bearing support, the cross-under rotating shaft in bearing support and bearing rotating shaft be articulated in bearing support, it is characterized in that, rotating shaft being bolted with one for pushing up the bearing lock nuts of pressure bearing inner race upper-end surface downwards, rotating shaft being provided with one for the step surface of spring bearing inner ring lower end surface; Bearing support diapire is provided with the top splenium held for upwards pushing up last item; Bearing support outer surface is arranged with bearing support overcoat, puts the elastic member be provided with for upwards pushing up last item bearing outside bearing support.
2. novel bearing pre-pressing structure as claimed in claim 1, is characterized in that, top splenium is arranged the jut for pushing up last item bearing outer-ring.
3. novel bearing pre-pressing structure as claimed in claim 1, it is characterized in that, put outside bearing support and be provided with equally distributed axial blind hole, elastic member is installed between blind hole diapire and bearing support.
4. novel bearing pre-pressing structure as claimed in claim 1, it is characterized in that, elastic member is spring.
5. novel bearing pre-pressing structure as claimed in claim 1, is characterized in that, be provided with steel ball sleeve between bearing support and bearing support overcoat.
6. novel bearing pre-pressing structure as claimed in claim 5, it is characterized in that, the top and bottom of steel ball sleeve are equipped with seal ring.
7. novel bearing pre-pressing structure as claimed in claim 1, it is characterized in that, be provided with upper bearing (metal) and lower bearing in bearing support, bearing lock nuts is arranged at the upper-end surface of upper bearing (metal) inner ring, and step surface is arranged at the lower end surface of lower bearing inner ring.
8. novel bearing pre-pressing structure as claimed in claim 7, it is characterized in that, be provided with inner ring spacer between the lower end surface of upper bearing (metal) inner ring and the upper-end surface of lower bearing inner ring, between the lower end surface of upper bearing (metal) outer ring and the upper-end surface of lower bearing outer ring, be provided with the outer shroud spacer matched with inner ring spacer.
9. novel bearing pre-pressing structure as claimed in claim 7, it is characterized in that, the upper end of upper bearing (metal) is provided with the bearing gland for pushing up the upper-end surface pressing bearing outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420778360.XU CN204387130U (en) | 2014-12-10 | 2014-12-10 | A kind of novel bearing pre-pressing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420778360.XU CN204387130U (en) | 2014-12-10 | 2014-12-10 | A kind of novel bearing pre-pressing structure |
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| Publication Number | Publication Date |
|---|---|
| CN204387130U true CN204387130U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420778360.XU Active CN204387130U (en) | 2014-12-10 | 2014-12-10 | A kind of novel bearing pre-pressing structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465193A (en) * | 2015-12-30 | 2016-04-06 | 苏州钛盟科技精密模具有限公司 | Steel ball bushing for shock absorber of bicycle |
| CN108163598A (en) * | 2018-01-24 | 2018-06-15 | 上海宗力印刷包装机械有限公司 | A kind of high-precision roller |
| CN113513543A (en) * | 2021-03-16 | 2021-10-19 | 中国航发哈尔滨东安发动机有限公司 | Flange connection overtorque protection device |
| CN115711262A (en) * | 2021-08-23 | 2023-02-24 | 中国科学院理化技术研究所 | Main shaft supporting structure of rotating machinery and rotating machinery |
-
2014
- 2014-12-10 CN CN201420778360.XU patent/CN204387130U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465193A (en) * | 2015-12-30 | 2016-04-06 | 苏州钛盟科技精密模具有限公司 | Steel ball bushing for shock absorber of bicycle |
| CN108163598A (en) * | 2018-01-24 | 2018-06-15 | 上海宗力印刷包装机械有限公司 | A kind of high-precision roller |
| CN113513543A (en) * | 2021-03-16 | 2021-10-19 | 中国航发哈尔滨东安发动机有限公司 | Flange connection overtorque protection device |
| CN115711262A (en) * | 2021-08-23 | 2023-02-24 | 中国科学院理化技术研究所 | Main shaft supporting structure of rotating machinery and rotating machinery |
| CN115711262B (en) * | 2021-08-23 | 2023-06-16 | 中国科学院理化技术研究所 | Main shaft supporting structure of rotary machine and rotary machine |
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| GR01 | Patent grant |