CN208294938U - A kind of floating bearing with oil leak hole - Google Patents
A kind of floating bearing with oil leak hole Download PDFInfo
- Publication number
- CN208294938U CN208294938U CN201820848543.2U CN201820848543U CN208294938U CN 208294938 U CN208294938 U CN 208294938U CN 201820848543 U CN201820848543 U CN 201820848543U CN 208294938 U CN208294938 U CN 208294938U
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- Prior art keywords
- leak hole
- oil
- oil leak
- floating bearing
- hole
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Abstract
The utility model discloses a kind of floating bearings with oil leak hole, including oil leak hole and radial direction oil hole, the oil leak hole and the angled setting of floating bearing axis, the floating bearing end face is led in described oil leak hole one end, the other end leads to the floating bearing inner cylinder face, the radial direction oil hole is disposed radially and leads to the floating bearing inner surface, and the oil leak hole is not communicated with the radial direction oil hole, and the oil leak hole is not communicated with the floating bearing outer surface.This has the floating bearing of oil leak hole, can be effectively reduced the vibration of bearing arrangement, reduces the noise that bearing arrangement vibration generates, reduces temperature when bearing arrangement operation, and improve the floating bearing service life.
Description
Technical field
The utility model relates to floating bearing of turbo-charger field more particularly to a kind of floating axles with oil leak hole
It holds.
Background technique
Technology for Turbocharger Manufacturing can effectively improve the power density of engine, reduce complete vehicle weight, improve fuel oil warp
Ji property, plays an important role to the energy-saving and emission-reduction of automobile.As energy problem is increasingly urgent tight with adding for emission regulation, turbine increases
Depressor technology is gradually popularized on a large scale.Vehicular engine dynamic property, economy, exhaust gas discharge and in terms of want
The continuous improvement asked proposes higher challenge to technology for Turbocharger Manufacturing.
Since the revolving speed of turbocharger is high, floating bearing is mainly used at present.Existing typical bearing arrangement cloth
It sets as shown in Figure 1, two floating bearings are placed in intermediate, is used to support entire rotor.The rotor-support-foundation system of rotation includes whirlpool
Wheel, pressure impeller, main shaft and other auxiliary components for being used for axially position include bearing body.Arrow in Fig. 1 indicates lubricating oil
Flow direction, booster rotation when, the dynamic pressure of lubricating oil can be respectively formed oil film in the interior lateral gap of floating bearing,
To support rotor-support-foundation system.
The floating bearing that most booster uses currently on the market has on floating bearing as shown in Fig. 3, Fig. 4 and Fig. 5
Several radial direction oil holes (being 6 in Fig. 3, Fig. 4, Fig. 5 example), the lubricating oil come is flowed into from intermediate oilhole, and radially oilhole inflow is floating
The medial gap of dynamic bearing forms interior oil film.The flow path of lubricating oil is as denoted by the arrows in fig. 2.
The cooperation of floating bearing and main shaft as shown in fig. 6, the direction A-A view as shown in fig. 7, the direction B-B cross-sectional view
As shown in Figure 8.Lubricating oil between floating bearing and main shaft will form oil film support rotor-support-foundation system.
(being to rotate in Fig. 7, Fig. 8 counterclockwise, actual conditions are also likely to be to rotate clockwise) as the spindle turns, main shaft
The axis of axis and floating bearing can generate a degree of bias.The interior oil film of floating bearing there are the lesser gap in side and
The biggish gap in side, thus the oil film between main shaft and floating bearing is divided into two parts: along direction of rotation, thickness is gradually reduced
Convergence wedge (Fig. 7 and Fig. 8 lower left side) and the diverging wedge (upper right side Fig. 7 and Fig. 8) that is gradually increased along direction of rotation thickness.But
The flowing velocity of lubricating oil circumferential direction at different gap is essentially identical, therefore the lubrication in the section by the smaller side of oil clearance
Oil stream amount is greater than the flow of lubrication in the section of the larger side of oil clearance.The lubricating oil for eventually leading to convergence wedge region increases,
The lubricating oil for dissipating wedge region is reduced, and pushes main shaft while along the axis rotation of main shaft, and the axis around floating bearing is public
Turn, this phenomenon is known as oil whirl in sliding bearing.Oil whirl problem can generate noise problem, even destroy when serious
The stability of bearing arrangement.
Due to the characteristic of floating bearing system, oil whirl can be generated at work, and then can cause noise problem, sternly
The stability of bearing arrangement is even destroyed when weight.
In order to solve the vibration and noise problem of oil whirl generation, each producer proposes different solutions.
Technical solution one as described in patent No. CN104583620A, by the gap for changing main shaft surface and bearing hole
Amount makes rotor generate centering effect in the slow-speed of revolution and high-revolving frictional resistance is inhibited to rise, to reduce noise.
Technical solution two as described in patent No. CN105940229A opens circumferential oil groove in bearing outside surface, by changing
The static pressure distribution for becoming lubricating oil, inhibits the unstable vibration of rotor.
Existing technology, or basic bearing arrangement is used, improvement is not made for oil whirl problem, or use
Above-mentioned several schemes: the profile of the technical solution one as described in patent No. CN104583620A, brearing bore is controlled in a μm grade
Not, part processing cost certainly will be greatly improved, while it is also unobvious to the improvement effect of vibration；Such as the patent No.
Technical solution two described in CN105940229A does not directly improve the vibration of oil whirl generation, then inhibits vibration to axis
The conduction of body is held, although making moderate progress to the vibration and noise that are transmitted to vehicle, without fundamentally solving rotor-support-foundation system
Vibration problem.
Therefore, those skilled in the art is dedicated to developing a kind of floating bearing with oil leak hole, can effectively drop
The vibration of low bearing arrangement reduces the noise that bearing arrangement vibration generates, reduces temperature when bearing arrangement operation, and improves floating
The dynamic bearing service life.
Utility model content
In view of the above drawbacks of the prior art, technical problem to be solved in the utility model is fundamentally to solve to turn
The vibration problem of subsystem, does not bring other side effects, has not only maintained the integrality of oil film inside and outside floating bearing, but save at
Originally it and is easily achieved.
To achieve the above object, the utility model provides a kind of floating bearing with oil leak hole, including oil leak hole and
Radial direction oil hole, the oil leak hole and the angled setting of floating bearing axis, the floating axle is led in described oil leak hole one end
Socket end face, the other end lead to the floating bearing inner cylinder face, and the radial direction oil hole is disposed radially and leads to the floating axle
Inner surface is held, the oil leak hole is not communicated with the radial direction oil hole, and the oil leak hole is not communicated with the floating bearing outer surface.
Further, the radial direction oil hole is using cylindrical.
Further, the oil leak hole is using cylindrical or non-cylindrical.
Further, the internal diameter of the cylindrical or described non-cylindrical oil leak hole is greater than 0 and is less than the floating bearing
The difference of internal-and external diameter.
Further, the variation range of the draining hole number is 1 to 12.
Further, the oil leak hole can be staggered in circumferencial direction with the radial direction oil hole, described oil leak hole one end
Lead to the end face of the floating bearing, the other end leads to the floating bearing inner cylinder face.
Further, the oil leak hole is not communicated with the radial direction oil hole.
The utility model makes oil leak hole one end and floating bearing end by adding inclined oil leak hole on floating bearing
Face communicates, and the other end is communicated with floating bearing inner cylinder face, significantly reduces vibration when rotor-support-foundation system operation, and then reduce
Resulting noise, while bearing temperature when operation is effectively reduced, improve the floating bearing service life.
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Detailed description of the invention
Fig. 1 is existing exemplary turbocharger bearing arrangement layout drawing；
Fig. 2 is simplified existing exemplary turbocharger bearing arrangement layout drawing；
Fig. 3 is typical floating bearing of turbo-charger figure currently on the market；
Fig. 4 is typical floating bearing of turbo-charger meridian plane cross-sectional view currently on the market；
Fig. 5 is typical floating bearing of turbo-charger longitudinal section view currently on the market；
Fig. 6 is typical floating bearing of turbo-charger and spindle mounted meridian plane cross-sectional view currently on the market；
Fig. 7 is typical floating bearing of turbo-charger and spindle mounted A direction view currently on the market；
Fig. 8 is typical floating bearing of turbo-charger and spindle mounted B-B section plan currently on the market；
Fig. 9 is the floating bearing figure with oil leak hole of one preferred embodiment of the utility model；
Figure 10 is the floating bearing meridian plane cross-sectional view with oil leak hole of one preferred embodiment of the utility model；
Figure 11 is the floating bearing longitudinal section view with oil leak hole of one preferred embodiment of the utility model；
Figure 12 is that the floating bearing with oil leak hole of one preferred embodiment of the utility model is cutd open with spindle mounted meridian plane
View；
Figure 13 is the floating bearing with oil leak hole and spindle mounted A direction view of one preferred embodiment of the utility model；
Figure 14 is that the floating bearing with oil leak hole of one preferred embodiment of the utility model and spindle mounted B-B plane are cutd open
View；
Figure 15 is the floating bearing figure with oil leak hole of the utility model another preferred embodiment；
Figure 16 is that the floating bearing with oil leak hole of the utility model another preferred embodiment crosses the meridian plane of radial direction oil hole
Cross-sectional view；
Figure 17 is that the floating bearing with oil leak hole of the utility model another preferred embodiment is crossed the meridian plane of oil leak hole and cutd open
View；
Figure 18 is that the floating bearing with oil leak hole of the utility model another preferred embodiment and spindle mounted meridian plane cut open
View；
Figure 19 is that the floating bearing with oil leak hole of the utility model another preferred embodiment is crossed the meridian plane of oil leak hole and cutd open
View；
Figure 20 is that the floating bearing with oil leak hole of the utility model another preferred embodiment and spindle mounted meridian plane cut open
View；
Wherein, 1- floating bearing, 2- turbine, 3- bearing body, 4- press impeller, 5- main shaft, 6- internal layer oil film, 7- outer oil
Film, 8- radial direction oil hole, 9- main-shaft axis, 10- floating bearing axis, 11- restrain wedge, and 12- dissipates wedge, the section 13-A, and 14-B is cut
Face, 15- oil leak hole.
Specific embodiment
Multiple preferred embodiments that the utility model is introduced below with reference to Figure of description, keep its technology contents clearer
Be easy to understand.The utility model can be emerged from by many various forms of embodiments, the protection of the utility model
Range is not limited only to the embodiment mentioned in text.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and the utility model is not
Limit the size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
As shown in figure 9, a kind of floating bearing 1 with oil leak hole 15 of the utility model, including oil leak hole 15 and radial direction
Oilhole 8, the angled setting of axis of the oil leak hole 15 and the floating bearing 1, the radial direction oil hole 8 are disposed radially
And lead to 1 inner surface of floating bearing, the oil leak hole 15 is not communicated with the radial direction oil hole 8.Figure 10 is the utility model
A kind of embodiment the floating bearing meridian plane cross-sectional view with oil leak hole；Figure 11 is the band of an embodiment of the present invention
The floating bearing longitudinal section view of oil leak hole.Non-cylindrical, oil leak hole 15 and diameter can also be used using cylinder in oil leak hole 15
All be to the size of oilhole 8 it is variable, can be chosen according to concrete application situation.The axis of floating bearing 1 is arranged in radial direction oil hole 8
To middle position.
Figure 12 is the floating bearing with oil leak hole and spindle mounted meridian plane section view of an embodiment of the present invention
Figure；Figure 13 is the floating bearing with oil leak hole and spindle mounted A direction view of an embodiment of the present invention；Figure 14 is this
The floating bearing with oil leak hole and spindle mounted B-B section plan of a kind of embodiment of utility model；Floating bearing 1 and master
Lubricating oil between axis 5 will form oil film support rotor-support-foundation system.
A kind of floating bearing with oil leak hole 15 of the utility model is suitable for existing typical bearing arrangement arrangement
As shown in Figure 1, two floating bearings 1 are placed in intermediate, it is used to support entire rotor.The rotor-support-foundation system of rotation includes turbine
2, pressing impeller 4, main shaft 5 and other auxiliary components for being used for axially position includes bearing body 3.Arrow in Fig. 1 indicates lubrication
The flow direction of oil, in booster rotation, the dynamic pressure of lubricating oil can be respectively formed oil in the interior lateral gap of floating bearing
Film, including internal layer oil film 6 and outer layer oil film 7, to support rotor-support-foundation system.
For ease of description, the floating bearing system in Fig. 1 is reduced to Fig. 2, it should be noted that Fig. 2 only contains floating
Main parts size in bearing arrangement, and its dimension scale does not reflect time of day.
It is main when main shaft 5 rotates (being to rotate in Figure 13, Figure 14 counterclockwise, actual conditions are also likely to be to rotate clockwise)
Axis axis 9 and floating bearing axis 10 can generate a degree of bias.That there are sides is lesser for the internal layer oil film 6 of floating bearing
The biggish gap in gap and side, thus the oil film between main shaft 5 and floating bearing 1 is divided into two parts: along direction of rotation thickness
The convergence wedge 11 (Figure 13 and Figure 14 lower left side) being gradually reduced and the diverging wedge 12 being gradually increased along direction of rotation thickness (Figure 13 and
The upper right side Figure 14).But the flowing velocity of the lubricating oil circumferential direction at different gap is essentially identical, therefore smaller by oil clearance
The flow of lubrication in the section A 13 of side is greater than the flow of lubrication of the B-section 14 of the larger side of oil clearance.Eventually lead to receipts
The lubricating oil for holding back 11 region of wedge increases, and the lubricating oil in diverging 12 region of wedge is reduced, and pushes main shaft 5 along 9 rotation of main-shaft axis
Meanwhile it is 10 turns public around floating bearing axis, this phenomenon is known as oil whirl in sliding bearing.Oil whirl problem can produce
Raw noise problem, even destroys the stability of bearing arrangement when serious.The utility model is by being arranged draining on floating bearing 1
Hole 15 will be restrained a part of extra lubricating oil in wedge 11 and be discharged as shown in Figure 12 arrow, reduces oil whirl problem to reach
Purpose.And then it is effectively reduced the vibration of bearing arrangement, the noise that bearing arrangement vibration generates is reduced, bearing arrangement fortune is reduced
Temperature when row improves the floating bearing service life.
In another embodiment of the utility model, oil leak hole 15 and radial direction oil hole 8 interlaced arrangement in the circumferential.
In another embodiment of the utility model, as shown in Figure 15, Figure 16, Figure 17, Figure 18, oil leak hole 15 and radial oil
The end face of floating bearing 1 is led in the interlaced arrangement in the circumferential direction of floating bearing 1 of hole 8,15 one end of oil leak hole, and the other end leads to floating
1 inner cylinder face of bearing, and oil leak hole 15 is not communicated with radial direction oil hole 8, oil leak hole 15 is arranged in the two sides of radial direction oil hole 8, can also
To be arranged in the unilateral such as Figure 19 and Figure 20 of radial direction oil hole 8.The tilt angle of oil leak hole 15 can adjust according to the actual situation.It lets out
The size of oilhole 15, quantity can adjust according to the actual situation.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that this field ordinary skill without
It needs creative work according to the present utility model can conceive and makes many modifications and variations.Therefore, it is all in the art
Technical staff passes through logical analysis, reasoning, or a limited experiment according to the design of the utility model on the basis of existing technology can
It, all should be within the scope of protection determined by the claims with obtained technical solution.
Claims (7)
1. a kind of floating bearing with oil leak hole, which is characterized in that including oil leak hole and radial direction oil hole, the oil leak hole and floating
The floating bearing end face is led in the angled setting of moving axis bearing axis, described oil leak hole one end, and the other end leads to described floating
Dynamic bearing inner cylinder face, the radial direction oil hole are disposed radially and lead to the floating bearing inner surface, the oil leak hole and institute
It states radial direction oil hole to be not communicated with, the oil leak hole is not communicated with the floating bearing outer surface.
2. having the floating bearing of oil leak hole as described in claim 1, which is characterized in that the radial direction oil hole uses cylinder
Shape.
3. having the floating bearing of oil leak hole as described in claim 1, which is characterized in that the oil leak hole using cylindrical or
Non-cylindrical.
4. having the floating bearing of oil leak hole as claimed in claim 3, which is characterized in that the cylindrical or described non-cylindrical
The internal diameter of shape oil leak hole is greater than the difference for the internal-and external diameter that 0 is less than the floating bearing.
5. having the floating bearing of oil leak hole as described in claim 1, which is characterized in that the variation model of the draining hole number
Enclose is 1 to 12.
6. having the floating bearing of oil leak hole as described in claim 1, which is characterized in that the oil leak hole can in circumferencial direction
It is staggered with the radial direction oil hole, the end face of the floating bearing is led in described oil leak hole one end, and the other end leads to described floating
Dynamic bearing inner cylinder face.
7. having the floating bearing of oil leak hole as claimed in claim 6, which is characterized in that the oil leak hole and the radial oil
Hole is not communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820848543.2U CN208294938U (en) | 2018-05-25 | 2018-05-25 | A kind of floating bearing with oil leak hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820848543.2U CN208294938U (en) | 2018-05-25 | 2018-05-25 | A kind of floating bearing with oil leak hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208294938U true CN208294938U (en) | 2018-12-28 |
Family
ID=64722621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820848543.2U Active CN208294938U (en) | 2018-05-25 | 2018-05-25 | A kind of floating bearing with oil leak hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208294938U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506334A (en) * | 2018-05-25 | 2018-09-07 | 奕森科技（上海）有限公司 | A kind of floating bearing with oil leak hole |
-
2018
- 2018-05-25 CN CN201820848543.2U patent/CN208294938U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506334A (en) * | 2018-05-25 | 2018-09-07 | 奕森科技（上海）有限公司 | A kind of floating bearing with oil leak hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201027 Address after: 215506 No. 1150, Southeast Avenue, Dongnan street, Changshu, Suzhou, Jiangsu Province Patentee after: Eason Technology (Jiangsu) Co., Ltd Address before: 201703 Shanghai city Qingpu District No. 518 Songhui Road Building 1 layer 1 Patentee before: ISEM TECHNOLOGIES (SHANGHAI) Co. |
|
| TR01 | Transfer of patent right |