CN109505872A - Bearing pre-tightening device - Google Patents
Bearing pre-tightening device Download PDFInfo
- Publication number
- CN109505872A CN109505872A CN201710828851.9A CN201710828851A CN109505872A CN 109505872 A CN109505872 A CN 109505872A CN 201710828851 A CN201710828851 A CN 201710828851A CN 109505872 A CN109505872 A CN 109505872A
- Authority
- CN
- China
- Prior art keywords
- bearing
- tightening device
- elastic yarn
- elastic
- elastic element
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/061—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing mounting a plurality of bearings side by side
Abstract
The present invention provides a kind of bearing pre-tightening devices comprising bearing block, two bearings and axle sleeve, the bearing are mounted in the bearing block, and are installed by the axle sleeve to axis, carry out axially position to the bearing；Pressing device is provided on the bearing block, the pressing device compresses the outer ring of the bearing, is arranged between two bearings and has elastic component, and by the elastic element compressive deformation, compresses the outer ring of the bearing, Xiang Suoshu bearing applies pretightning force.Bearing pre-tightening device of the present invention includes integrated elastic element, and structure is simple, is easily installed, and elastic element has the characteristics that range in stiffness is wide, by designing a variety of different rigidity, can apply a variety of different pretightning forces.
Description
Technical field
The present invention relates to aero-engine field, in particular to a kind of bearing pre-tightening device.
Background technique
In all kinds of rotating machineries, including aero-engine, rolling bearing is of wide application.In order to prevent compared with
Rotor operating caused by big bearing clearance is unstable, reduces rotor oscillation, and prevent axis caused by rolling bearing light load slipping
Hold damage, it usually needs apply pretightning force to rolling bearing.However, in the prior art, generalling use wire spring, disc spring etc. and applying
Add axial pre tightening force.
Traditional wire spring only has an elastic yarn, and the rigidity of spring is weaker, is unsatisfactory for the case where applying larger pretightning force,
And usually need to design spring base, so that structure is complex.Another common spring is disk spring, disc spring rigidity compared with
Greatly, larger pretightning force can be applied.But disc spring is usually multiple to be used together, and biggish installation space, and the shape of component are needed
Formula will increase installation workload.
Bearing pre-tightening device is typically necessary configuration elastic element, and the stiffness effect of elastic element can apply the big of pretightning force
Small, the structure type of elastic element influences the size etc. of pre-tightening apparatus installation space.If traditional bearing pre-tightening device using
Cylindrically coiled spring, since spring rate is less than normal, the pretightning force that can apply is smaller, usually also needs to configure spring base, pre-tightens dress
It sets structure and its installation is complex.If using disk spring, it is desirable that installation space is larger；If using metal ring conduct
Elastic element, rigidity is excessive, resilient force stroke very little.
Therefore, in view of the foregoing, those skilled in the art urgently develop a kind of novel bearing pre-tightening device.
Summary of the invention
The technical problem to be solved by the present invention is to the conventional axial pre-tightening apparatus structures in order to overcome prior art middle (center) bearing
The defects of complexity, installation workload is big, provides a kind of bearing pre-tightening device.
The present invention is to solve above-mentioned technical problem by following technical proposals:
A kind of bearing pre-tightening device, it is characterized in that, the bearing pre-tightening device includes bearing block, two bearings and axis
Set, the bearing is mounted in the bearing block, and is installed by the axle sleeve to axis, and it is axial fixed to carry out to the bearing
Position；
Pressing device is provided on the bearing block, the pressing device compresses the outer ring of the bearing, two axis
Setting has elastic component between holding, and by the elastic element compressive deformation, compresses the outer ring of the bearing, Xiang Suoshu bearing is applied
Add pretightning force.
According to one embodiment of present invention, the elastic element includes two end circular loops and a plurality of elastic yarn, a plurality of
The elastic yarn is connected in parallel between two end circular loops.
According to one embodiment of present invention, the end circular loop forms a cylindrical surface, and the elastic yarn is in circumference side
It is evenly distributed in the cylindrical surface upwards.
According to one embodiment of present invention, the elastic yarn is V-shaped.
According to one embodiment of present invention, the elastic yarn is in " W " shape.
According to one embodiment of present invention, the elastic yarn is in coherent waveform.
According to one embodiment of present invention, the elastic element includes an end circular loop and a plurality of elastic yarn, each
One end of the elastic yarn is connect with the end circular loop, and a plurality of elastic yarn is parallel with one another.
According to one embodiment of present invention, the elastic yarn is V-shaped.
According to one embodiment of present invention, the elastic element includes a plurality of elastic yarn, the every two adjacent bullet
Sex pilus is connected with each other, and forms an annulus.
According to one embodiment of present invention, the elastic yarn is V-shaped.
The positive effect of the present invention is that:
Bearing pre-tightening device of the present invention is directed to the deficiency of traditional pre-tightening apparatus, especially elastic element, proposes a kind of preload
Device, including integrated elastic element, structure is simple, is easily installed, and elastic element has the characteristics that range in stiffness is wide, leads to
It crosses and designs a variety of different rigidity, a variety of different pretightning forces can be applied.The elastic element of this integral type cage structure occupies
Space is smaller, is easily installed, and range in stiffness is wide, generates large-scale axial force, realizes the application of bearing pre-fastening.
Detailed description of the invention
The above and other feature of the present invention, property and advantage will pass through description with reference to the accompanying drawings and examples
And become apparent, identical appended drawing reference always shows identical feature in the accompanying drawings, in which:
Fig. 1 is the structural schematic diagram of bearing pre-tightening device of the present invention.
Fig. 2 is the structural schematic diagram of one elastic element of embodiment of bearing pre-tightening device of the present invention.
Fig. 3 is the structural schematic diagram of two elastic element of embodiment of bearing pre-tightening device of the present invention.
Fig. 4 is the structural schematic diagram of three elastic element of embodiment of bearing pre-tightening device of the present invention.
Fig. 5 is the structural schematic diagram of the example IV elastic element of bearing pre-tightening device of the present invention.
Specific embodiment
For the above objects, features and advantages of the present invention can be clearer and more comprehensible, below in conjunction with attached drawing to tool of the invention
Body embodiment elaborates.
The embodiment of the present invention is described with detailed reference to attached drawing now.Now with detailed reference to preferred implementation of the invention
Example, its example is shown in the drawings.In the case of any possible, phase will be indicated using identical label in all the appended drawings
Same or similar part.
In addition, the present invention is said although term used in the present invention is selected from public term
Some terms mentioned in bright book may be that applicant is judged to carry out selection as his or her, and detailed meanings are retouched this paper's
Illustrate in the relevant portion stated.
Furthermore, it is desirable that not only by used actual terms, and be also to the meaning contained by each term
To understand the present invention.
Embodiment one:
Fig. 1 is the structural schematic diagram of bearing pre-tightening device of the present invention.Fig. 2 is the embodiment one of bearing pre-tightening device of the present invention
The structural schematic diagram of elastic element.
As depicted in figs. 1 and 2, the invention discloses a kind of bearing pre-tightening devices 10 comprising 11, two bearings of bearing block
12 and axle sleeve 13.Wherein, bearing 12 is mounted in bearing block 11, and is installed by axle sleeve 13 to axis 14, with this to bearing 12
Carry out axially position.Meanwhile pressing device 15 is provided on bearing block 11, the outer of bearing 12 is compressed by pressing device 15
Circle, setting has elastic component 16 between two bearings 12, by 16 compressive deformation of elastic element, to compress the outer of bearing 12
Circle applies pretightning force to bearing 12.
Preferably, the present embodiment elastic element 16 includes two end circular loops 161 and a plurality of elastic yarn 162, a plurality of bullet
Sex pilus 162 is connected in parallel between two end circular loops 161.End circular arc 161 is mainly used for fixed elastic yarn 162, and two
End circular loop 161 forms a cylindrical surface, and elastic yarn 162 is evenly distributed in a circumferential direction in the cylindrical surface.This
The elastic yarn 162 at place is V-shaped.Certainly, the shape of elastic yarn 162 can also be using other shapes, such as " C " shape etc., this
Place is only for example.
The elastic element of this integral type cage structure takes up space smaller, is easily installed, and range in stiffness is wide, generates big
The axial force of range realizes the application of bearing pre-fastening, a variety of occasions different suitable for deflection, pretightning force.
It is described according to above structure, enumerates specific embodiment further below:
For example, the specific size of elastic element 16 can be set to outer diameter 158mm, width 28mm, elasticity modulus of materials E is
2E11Pa, Poisson's ratio 0.3.
The advantages of this structure first is that not changing construction profile key dimension in the case where, can be by adjusting spring wire
The adjustment of the realization rigidity such as sectional area, spring wire warp architecture, spring wire number n.
By Finite Element and Hooke theorem, the rigidity of elastic element, calculated result can be calculated are as follows:
Spring wire number n=3, when spring wire section is 2mm × 8mm, rigidity 2.6E6N/m；
Spring wire number n=54, when spring wire section is 2mm × 8mm, rigidity 4.67E7N/m；
Spring wire number n=54, when spring wire section is 4mm × 8mm, rigidity 6.69E8N/m；
It can be seen that the range in stiffness of bearing pre-tightening device elastic element of the present invention are as follows: 2.6E6N/m~6.69E8N/
m。
Elastic element compared with cylindrically coiled spring in the prior art, butterfly spring, in bearing pre-tightening device of the present invention
Range in stiffness is larger, and pretightning force is applied widely, and due to being integral type, and structure takes up space small, keeps device structure tight
It gathers, and is easily installed.
Embodiment two:
Fig. 3 is the structural schematic diagram of two elastic element of embodiment of bearing pre-tightening device of the present invention.
As shown in figure 3, the structure of the present embodiment is basically the same as the first embodiment, and the difference is that: the present embodiment axis
The elastic yarn 162 of pre-tightening apparatus elastic element 16 is held in " W " shape.Alternatively, on this basis, elastic yarn 162 also can be set
For in coherent waveform.
The elastic element of this integral type cage structure takes up space smaller, is easily installed, and range in stiffness is wide, generates big
The axial force of range realizes the application of bearing pre-fastening, a variety of occasions different suitable for deflection, pretightning force.
Embodiment three:
Fig. 4 is the structural schematic diagram of three elastic element of embodiment of bearing pre-tightening device of the present invention.
As shown in figure 4, the structure of the present embodiment is basically the same as the first embodiment, and the difference is that: the present embodiment axis
Holding pre-tightening apparatus elastic element 16 includes an end circular loop 161 and a plurality of elastic yarn 162, and end circular arc 161 is mainly used for
Fixed elastic yarn 162, one end of each elastic yarn 162 is connect with end circular loop 161, and a plurality of elastic yarn 162 is parallel with one another.This
The elastic yarn 162 at place is V-shaped.Certainly, the shape of elastic yarn 162 can also be using other shapes, such as " C " shape etc., this
Place is only for example.
The elastic element of this integral type cage structure takes up space smaller, is easily installed, and range in stiffness is wide, generates big
The axial force of range realizes the application of bearing pre-fastening, a variety of occasions different suitable for deflection, pretightning force.
Example IV:
Fig. 5 is the structural schematic diagram of the example IV elastic element of bearing pre-tightening device of the present invention.
As shown in figure 5, the structure of the present embodiment is basically the same as the first embodiment, and the difference is that: the present embodiment axis
Holding pre-tightening apparatus elastic element 16 includes a plurality of elastic yarn 162, and every two adjacent elastic yarn 162 is connected with each other, and forms one
A annulus.Particularly, elastic yarn 162 is V-shaped herein.Certainly, the shape of elastic yarn 162 can also use other shapes, example
Such as " C " shape, is only for example herein.
The elastic element of this integral type cage structure takes up space smaller, is easily installed, and range in stiffness is wide, generates big
The axial force of range realizes the application of bearing pre-fastening, a variety of occasions different suitable for deflection, pretightning force.
In conclusion bearing pre-tightening device of the present invention is directed to the deficiency of traditional pre-tightening apparatus especially elastic element, propose
A kind of pre-tightening apparatus including integrated elastic element, structure is simple, is easily installed, and elastic element has range in stiffness
Wide feature can apply a variety of different pretightning forces by designing a variety of different rigidity.
Elastic element involved in bearing pre-tightening device of the present invention has a plurality of elastic yarn, and a plurality of elastic yarn is in parallel, a plurality of
Elastic yarn is uniformly distributed in circumferencial direction, and a plurality of elastic yarn is in cylindrical surface, can realize under the premise of overall dimensions are constant just
The adjustment of degree, adjusting parameter include the number for increasing and decreasing elastic yarn, the thickness for changing elastic yarn, adjust " V " shape structure on elastic yarn
Quantity and size etc..
Each elastic yarn end of elastic element involved in bearing pre-tightening device of the present invention is connected, to be integrally formed formula
The axial pretightening under the bearings different loads such as angular contact bearings, deep groove ball bearing may be implemented in cage type spring.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
Under the premise of from the principle and substance of the present invention, various changes or modifications can be made to these embodiments, but these are changed
Protection scope of the present invention is each fallen with modification.
Claims (10)
1. a kind of bearing pre-tightening device, which is characterized in that the bearing pre-tightening device includes bearing block, two bearings and axle sleeve,
The bearing is mounted in the bearing block, and is installed by the axle sleeve to axis, carries out axially position to the bearing；
Be provided with pressing device on the bearing block, the pressing device compresses the outer ring of the bearing, two bearings it
Between be arranged and have elastic component, by the elastic element compressive deformation, compress the outer ring of the bearing, Xiang Suoshu bearing applies pre-
Clamp force.
2. bearing pre-tightening device as described in claim 1, which is characterized in that the elastic element include two end circular loops and
A plurality of elastic yarn, a plurality of elastic yarn are connected in parallel between two end circular loops.
3. bearing pre-tightening device as claimed in claim 2, which is characterized in that the end circular loop forms a cylindrical surface, institute
Elastic yarn is stated to be evenly distributed in a circumferential direction in the cylindrical surface.
4. bearing pre-tightening device as claimed in claim 3, which is characterized in that the elastic yarn is V-shaped.
5. bearing pre-tightening device as claimed in claim 3, which is characterized in that the elastic yarn is in " W " shape.
6. bearing pre-tightening device as claimed in claim 3, which is characterized in that the elastic yarn is in coherent waveform.
7. bearing pre-tightening device as described in claim 1, which is characterized in that the elastic element include end circular loop and
One end of a plurality of elastic yarn, each elastic yarn is connect with the end circular loop, and a plurality of elastic yarn is parallel with one another.
8. bearing pre-tightening device as claimed in claim 7, which is characterized in that the elastic yarn is V-shaped.
9. bearing pre-tightening device as described in claim 1, which is characterized in that the elastic element includes a plurality of elastic yarn, often
Two adjacent elastic yarns are connected with each other, and form an annulus.
10. bearing pre-tightening device as claimed in claim 9, which is characterized in that the elastic yarn is V-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710828851.9A CN109505872A (en) | 2017-09-14 | 2017-09-14 | Bearing pre-tightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710828851.9A CN109505872A (en) | 2017-09-14 | 2017-09-14 | Bearing pre-tightening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109505872A true CN109505872A (en) | 2019-03-22 |
Family
ID=65744534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710828851.9A Pending CN109505872A (en) | 2017-09-14 | 2017-09-14 | Bearing pre-tightening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109505872A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542609A (en) * | 2022-02-15 | 2022-05-27 | 大连理工大学 | Automatic control device for pretightening force of space bearing |
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|---|---|---|---|---|
| CN2786355Y (en) * | 2005-04-06 | 2006-06-07 | 王志宏 | Elastic spacer bush |
| US20080203633A1 (en) * | 2007-02-23 | 2008-08-28 | Koehler Frederick B | Linear filament compression and torsion spring |
| CN102588449A (en) * | 2012-03-08 | 2012-07-18 | 中国南方航空工业(集团)有限公司 | Axial uniform load device of bearing and matching method thereof |
| CN105114452A (en) * | 2015-08-21 | 2015-12-02 | 洛阳轴研科技股份有限公司 | Bearing pair and bearing pair assembly |
| CN206190756U (en) * | 2016-11-08 | 2017-05-24 | 山东华准机械有限公司 | Double stretching pretension profile shaft bearing |
| CN206320189U (en) * | 2016-12-29 | 2017-07-11 | 人本集团有限公司 | A kind of non-maintaining hub bearing of truck and wherein spacer |
-
2017
- 2017-09-14 CN CN201710828851.9A patent/CN109505872A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2786355Y (en) * | 2005-04-06 | 2006-06-07 | 王志宏 | Elastic spacer bush |
| US20080203633A1 (en) * | 2007-02-23 | 2008-08-28 | Koehler Frederick B | Linear filament compression and torsion spring |
| CN102588449A (en) * | 2012-03-08 | 2012-07-18 | 中国南方航空工业(集团)有限公司 | Axial uniform load device of bearing and matching method thereof |
| CN105114452A (en) * | 2015-08-21 | 2015-12-02 | 洛阳轴研科技股份有限公司 | Bearing pair and bearing pair assembly |
| CN206190756U (en) * | 2016-11-08 | 2017-05-24 | 山东华准机械有限公司 | Double stretching pretension profile shaft bearing |
| CN206320189U (en) * | 2016-12-29 | 2017-07-11 | 人本集团有限公司 | A kind of non-maintaining hub bearing of truck and wherein spacer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542609A (en) * | 2022-02-15 | 2022-05-27 | 大连理工大学 | Automatic control device for pretightening force of space bearing |
| CN114542609B (en) * | 2022-02-15 | 2023-02-03 | 大连理工大学 | Automatic control device for pretightening force of space bearing |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190322 |
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| RJ01 | Rejection of invention patent application after publication |