CN209654129U - Rolling bearing, rotor-support-foundation system and engine - Google Patents
Rolling bearing, rotor-support-foundation system and engine Download PDFInfo
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- CN209654129U CN209654129U CN201822271435.6U CN201822271435U CN209654129U CN 209654129 U CN209654129 U CN 209654129U CN 201822271435 U CN201822271435 U CN 201822271435U CN 209654129 U CN209654129 U CN 209654129U
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- rolling bearing
- oil
- oil leab
- inner ring
- leab
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Abstract
The utility model relates to a kind of rolling bearing, rotor-support-foundation system and engines.Wherein, the rolling bearing can self-locking, inner ring offers oil leab, for lubricating oil to be guided into the rolling element of rolling bearing；The oil leab, which is tilted from one end that it is located at the inner peripheral surface of the inner ring to the rolling element, to be extended.Above-mentioned rolling bearing lubricates good, stable and reliable operation, long service life during the work time, and the mechanical efficiency of rotor-support-foundation system and engine, reliability also can be improved and prolong its service life.
Description
Technical field
The utility model relates to rotating machinery field more particularly to a kind of rolling bearing, rotor-support-foundation system and including its
Engine.
Background technique
Rotating machinery, such as the rotor-support-foundation system of aero-engine, be related to pneumatic, thermal technology, Structure & Intensity, control, test,
A variety of subjects such as computer, manufacturing technology and material have more than ten of component and system and ten hundreds of zero in one engine
Part, the operating conditions such as temperature, pressure, stress, revolving speed, vibration, gap and corrosion are complicated and severe more than other subsystems of aircraft
It carves, and has high requirement again to performance, weight, applicability, reliability, durability and environmental characteristics etc..Therefore, traditional
Development process is the successive ignition process an of design, manufacture, test, modification design.Aero-engine includes many systems,
In, oil system is most important to the lubrication and cooling effect of bearing, directly affects the reliability or even complete machine of bearing working
Safety.
The bearing lubrication mode of traditional engine rotor system mainly include lubrication under ring, lubricating end surface, drip lubrication,
Bath lubrication etc., wherein lubricated under ring using more and more extensive.Since the fuel feeding highway route design lubricated under ring is by engine knot
Structure limitation, thus lubricating oil hardly enters Bearing inner in most situations, lubricating oil utilization rate is lower, causes the profit of bearing
Sliding and cooling effect is low, and bearing takes place frequently because of initial failure caused by insufficient lubrication.
The lubricating oil flow path structure lubricated under the ring of the prior art is as shown in Figure 1, lubricating oil is sprayed from atomizer is (not shown)
Enter third oil collection part 100, third oil collection part 100 provides lubricating oil and is input to the first lubrication axially extending in clamp nut 200
Oil duct 210, lubricating oil is after the first oil leab 210, until the 4th oil collection part 500 between bearing 300 and shaft 400, then
It is input to the radial oil leab 310 of bearing 300, from the 4th oil collection part 500 to lubricate its rolling element.It will be seen from figure 1 that In
In the flow path of entire lubricating oil, due to lacking the power of axial advancement, thus lubricating oil hardly enters the inside profit of bearing 300
Sliding rolling element, so as to cause its insufficient lubrication, operational reliability difference and the lost of life.Further result in engine rotor system
Mechanical efficiency reduce, and increase additional repair and maintenance, part exchanging cost.
Therefore, this field needs a kind of rolling bearing, rotor-support-foundation system and engine, to improve the lubrication of rolling bearing,
Reduce the failure rate of bearing；And the mechanical efficiency of rotor-support-foundation system and engine is improved, reduce its maintenance cost.
Utility model content
One purpose of the utility model is to provide a kind of rolling bearing.
One purpose of the utility model is to provide a kind of rotor-support-foundation system.
One purpose of the utility model is to provide a kind of engine.
According to a kind of rolling bearing of the utility model one aspect, the rolling bearing can self-locking, inner ring opens up
There is oil leab, for lubricating oil to be guided into the rolling element of rolling bearing；The oil leab is located in the inner ring from it
The arrival end of circumferential surface is tilted to the rolling element to be extended
In one or more embodiments, the oil leab extends from arrival end to outlet end along same straight incline.
In one or more embodiments, the inclination angle that the inclination of the oil leab extends include the straight line with
The axis of rolling bearing is in >=30 ° of acute angle.
In one or more embodiments, the inclination angle that the inclination of the oil leab extends further includes the straight line
Sagittal plane with rolling bearing is in the angle between -45 ° to+45 °.
In one or more embodiments, the diameter of the oil leab is between 1mm-5mm.
In one or more embodiments, there are multiple oil leabs along the circumferentially distributed of the inner ring.
In one or more embodiments, the inclination angle that the inclination of each of the multiple oil leab extends includes phase
The angle of the axis of the same straight line and rolling bearing and the equally distributed straight line and rolling between -45 ° to+45 °
The angle of the sagittal plane of dynamic bearing.
In one or more embodiments, the outlet end of the oil leab is located at the outer peripheral surface of the inner ring, it is described go out
Mouth end is connected with the first oil collection part, and first oil collection part is used to collect the lubricating oil of the oil leab output.
According to a kind of rotor-support-foundation system of the utility model other side, including rolling described in shaft, any of the above one
Dynamic bearing and the second oil collection part, second oil collection part between the shaft and rolling bearing, and with the lubricating oil
The arrival end that road is located at the inner peripheral surface of the inner ring is connected.
According to a kind of engine of the utility model another aspect, including above-mentioned rotor-support-foundation system and stator system,
The stator system includes being fixedly connected with the mounting base of the outer ring of the rolling bearing, the line expansion of the inner ring of the rolling bearing
Coefficient is lower than the linear expansion coefficient of the shaft, and the linear expansion coefficient of the outer ring of the rolling bearing is higher than the line of the mounting base
The coefficient of expansion
The progress effect of the utility model is that the inner circumferential using arrival end in inner ring tilts the profit extended towards rolling element
The setting of grease way provides the power of axial advancement for lubricating oil, so that lubricating oil easily enters the rolling element of Bearing inner, mentions
The lubrication and cooling effect of high bearing, significantly reduce the failure rate of bearing, make its stable and reliable operation, long service life,
Also the mechanical efficiency of engine rotor system, reliability can be improved and prolong its service life.
Detailed description of the invention
The above and other feature, property and advantage of the utility model will be by with reference to the accompanying drawings and examples
Description and become readily apparent from, it should be noted that attached drawing only as an example, its be not be to be drawn according to the condition of equal proportion
System, and should not be construed as limiting in this, as the protection scope to the utility model actual requirement, in which:
Fig. 1 be the prior art ring under the schematic diagram of lubricating oil flow path structure that lubricates.
Fig. 2 be an embodiment of the present invention ring under the schematic diagram of lubricating oil flow path structure that lubricates.
Fig. 3 be another embodiment of the utility model ring under the schematic diagram of lubricating oil flow path structure that lubricates.
Part appended drawing reference:
1- rolling bearing
2- shaft
3- inner ring
4- rolling element
5- retainer
6- outer ring
7- mounting base
8- axle sleeve
9- oil leab
The second oil collection part of 10-
Specific embodiment
It is following to disclose the embodiment or embodiment of subject technology scheme described in a variety of different implementations.For simplification
The specific example of each element and arrangement is described below in disclosure, and certainly, these are only example, is not to this
The protection scope of utility model is limited.Such as the fisrt feature then recorded in the description above second feature or
It is formed above, may include the embodiment that the first and second features are formed by way of directly contacting, also be included in
The embodiment that supplementary features are formed between one and second feature, to can not directly be contacted between the first and second features.
In addition, in these disclosures may in different examples repeat reference numerals and/or letter.The repetition is in order to brief
With it is clear, itself do not indicate each embodiment being discussed and/or interstructural relationship.Further, when first element is
It is described with the mode for being connected with second element or combining, which includes that the first and second elements are connected directly or are bonded to each other
Embodiment, also include made using one or more other intervening elements additions the first and second interelements ground connection be connected or that
This is combined.
In addition, it is necessary to understand, the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, vertical, vertical, horizontal " and
Orientation or positional relationship indicated by " top, bottom " etc. is normally based on orientation or positional relationship shown in the drawings, merely to just
In description the utility model and simplify description, in the absence of explanation to the contrary, these nouns of locality do not indicate that and imply institute
The device or element of finger must have a particular orientation or be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of utility model protection range.Meanwhile the application has used particular words to describe embodiments herein.The noun of locality
" inside and outside " refers to inside and outside the profile relative to each component itself, limits components using the words such as " first ", " second ",
It is intended merely to facilitate and corresponding components is distinguished, there is no Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore
It can not be interpreted as the limitation to scope of protection of the utility model.Such as " one embodiment ", " embodiment ", and/or " some realities
Apply example " mean a certain feature relevant at least one embodiment of the application, structure or feature.Therefore, it should be emphasized that and pay attention to
It is " embodiment " or " one embodiment " or " the alternative reality referred to twice or repeatedly in this specification in different location
Apply example " it is not necessarily meant to refer to the same embodiment.In addition, certain features, structure in one or more embodiments of the application or
Feature can carry out combination appropriate.
In following embodiments, engine rotor system is by taking the rotor-support-foundation system of aero-engine as an example.
With reference to Fig. 2 and Fig. 3, in some embodiments, under the ring of aircraft engine rotor system lubrication system include can
The rolling bearing 1 of self-locking, shaft 2, rolling bearing 1 are set between shaft 2 and the casing of engine stator system, the axis of rolling
Holding 1 includes inner ring 3, rolling element 4, retainer 5 and outer ring 6, and the mounting base 7 of casing is connected with outer ring 6, to fix outer ring 6, and
Shaft 2 is connected by axle sleeve 8 with inner ring, and rolling bearing 1 is supported.Can the form of rolling element 4 of rolling bearing 1 of self-locking can be with
It is roller, is also possible to ball or other forms.The self-locking of rolling bearing 1 can be carried out by the material to rolling bearing 1
Selection realizes that the linear expansion coefficient of 1 inner ring 3 of rolling bearing is lower than the linear expansion coefficient of shaft 2, the line of the outer ring 6 of rolling bearing 1
The coefficient of expansion is higher than the linear expansion coefficient of mounting base 7.Linear expansion coefficient is also referred to as linear elasticity coefficient, indicates material expansion or shrinkage
Degree.During rotor-support-foundation system work, in-engine temperature is gradually risen, the inner ring 3 and shaft 2 of rolling bearing 1,
Cooperation tightness between outer ring 6 and mounting base 7 is in increase tendency, to guarantee that rolling bearing 1 will not generate loose phenomenon, to realize
Self-locking to rolling bearing 1.Realize the method and structure of self-locking, it is not above give an account of to continue be limited.It is self-locking due to using
Tight rolling bearing 1, the clamp nut in the prior art 200 that no setting is required as shown in Figure 1, lubricating oil can be outspoken from oil spout
Connect the second oil collection part 10 being sprayed between shaft 2 and rolling bearing 1, the lubricating oil that the second oil collection part 10 is collected, by with
The arrival end 91 of its connected oil leab 9 inputs the oil leab 9 for guiding rolling element 4 into that the inner ring 3 of rolling bearing 1 opens up,
To lubricate rolling element 4.The junction of the arrival end 91 of oil leab 9 and the second oil collection part 10 can be set as shown in Figure 2
The gap of shaft 2 in one embodiment and rolling bearing 1, also can be set axle sleeve 8 in an embodiment as shown in Figure 3 with
The gap of rolling bearing 1.Such as Fig. 2 and Fig. 3, the structure of oil leab 9 is that inclination extends from its arrival end 91 to rolling element 4
Structure.The beneficial effect is that tilting the setting of extension, the power of axial advancement is provided for lubricating oil, so that lubricating oil is easy to
Into the rolling element of Bearing inner, the lubrication and cooling effect of bearing are improved, the failure rate of bearing is significantly reduced, makes its fortune
The reliable and stable, long service life of row, also can be improved the mechanical efficiency of engine rotor system, reliability and extends it and use the longevity
Life.
Specifically, the specific structure for tilting extension may include that the arrival end 91 of oil leab 9 is to outlet end 92 along same
Straight incline extends, so can be in order to the processing of oil leab 9.In some embodiments, the inclination angle of extension is tilted, it can be with
Acute angle including with the axis of rolling bearing 1 being in >=30 °, i.e., some embodiments as shown in Figure 2 or Figure 3, the axis of oil leab 9
Line is including the projection of the sagittal plane of straight line where the axis of rolling bearing 1 and the radius of rolling bearing, with the axis of rolling
The axis for holding 1 is in >=30 ° of acute angle, and the beneficial effect that acquisition is arranged such is, can be further in this angular range
Increase the axial power for lubricating oil.Further, inclination angle can also include that the axis of oil leab 9 and above-mentioned radial direction are put down
Face in the angle between -45 ° to+45 °, some embodiments of Fig. 2 or shown in Fig. 3 are the axis of oil leab 9 and radial put down
The form that the angle in face is 0 °.
In some embodiments, the range of the diameter of oil leab 9 is set between 1mm-5mm, so can be preferably
Balance the intensity of inner ring 3 and the flow of lubricating oil.
In some embodiments, inner ring 3 can open up multiple oil leabs 9 along its circumferential direction, to advanced optimize lubrication
Effect.The quantity of oil leab 9 can be 3-10, determine according to specific lubricating requirement and the intensity requirement of bearing.Specifically
Ground, in multiple oil leabs 9, the inclination angle that the inclination of each oil leab 9 extends includes identical with rolling bearing 1 axis
The angle of line and the equally distributed angle with the sagittal plane of rolling bearing between -45 ° to+45 °, it is assumed for example that lubrication
The quantity of oil duct is 10, and the inclination angle that the inclination of each oil leab 9 extends includes being with the axis of rolling bearing 1
The angle of the above-mentioned sagittal plane of 30 ° of angles, each oil leab 9 and rolling bearing 1 is uniformly distributed between -45 ° to+45 °,
Each oil leab 9 and the angle of sagittal plane are followed successively by -45 °, -36 °, -27 ° ... ,+36 ° ,+45 °, and such setting can be with
It adapts to various working and provides lubrication circumstances of the enough axial power to optimize rolling element 4 for lubricating oil.Specifically, either singly
A or multiple oil leabs 9, can oil leab 9 be located at inner ring 3 outer peripheral surface outlet end 92, be arranged the first oil collection part
(not shown) is coupled, and first oil collection part is used to collect the lubricating oil of the output of oil leab 9, first oil collection part
The outer peripheral surface that specific structure can be inner ring 3 opens up annular groove, collects the lubricating oil that oil leab 9 exports.
To sum up, using the beneficial effect of the rolling bearing of above-described embodiment and engine rotor system including the use of entrance
The setting for holding the oil leab extended in the inner circumferential of inner ring towards rolling element inclination, provides the power of axial advancement for lubricating oil,
So that lubricating oil easily enters the rolling element of Bearing inner, the lubrication and cooling effect of bearing are improved, bearing is significantly reduced
Failure rate, make its stable and reliable operation, long service life, mechanical efficiency, the reliability of engine rotor system also can be improved
And it prolongs its service life.
Although the utility model is disclosed as above with above-described embodiment, its be not for limiting the utility model, it is any
Those skilled in the art without departing from the spirit and scope of the utility model, can make possible variation and modification.Example
Aircraft engine rotor system in embodiment is such as used for the rotor-support-foundation system of ground gas turbine.Therefore, all without departing from this
The content of utility model technical solution, it is made by the above technical examples according to the technical essence of the present invention it is any modification, etc.
With variation and modification, each fall within the protection scope that the utility model claims are defined.
Claims (10)
1. a kind of rolling bearing, which is characterized in that the rolling bearing can self-locking, inner ring offers oil leab, is used for
Lubricating oil is guided into the rolling element of rolling bearing；The oil leab is located at the arrival end of the inner peripheral surface of the inner ring to institute from it
Rolling element inclination is stated to extend.
2. rolling bearing as described in claim 1, which is characterized in that the oil leab is from arrival end to outlet end along same
Straight incline extends.
3. rolling bearing as claimed in claim 2, which is characterized in that the inclination angle that the inclination of the oil leab extends
Axis including the straight line and rolling bearing is in >=30 ° of acute angle.
4. rolling bearing as claimed in claim 3, which is characterized in that the inclination angle that the inclination of the oil leab extends
It further include the sagittal plane of the straight line and rolling bearing in the angle between -45 ° to+45 °.
5. rolling bearing as described in claim 1, which is characterized in that the diameter of the oil leab is between 1mm-5mm.
6. rolling bearing as claimed in claim 2, which is characterized in that circumferentially distributed along the inner ring has multiple lubricating oil
Road.
7. rolling bearing as claimed in claim 6, which is characterized in that the inclination of each of the multiple oil leab extends
Inclination angle include the identical straight line and rolling bearing axis angle and be uniformly distributed between -45 ° to+45 °
The straight line and rolling bearing sagittal plane angle.
8. rolling bearing as described in claim 1 or 6, which is characterized in that the outlet end of the oil leab is located in described
The outer peripheral surface of ring, the outlet end are connected with the first oil collection part, and first oil collection part is for collecting the oil leab output
Lubricating oil.
9. a kind of rotor-support-foundation system, which is characterized in that including rolling bearing described in shaft, claim 1-8 any one and
Second oil collection part, second oil collection part are located at the oil leab described between the shaft and rolling bearing
The arrival end of the inner peripheral surface of inner ring is connected.
10. a kind of aero-engine, which is characterized in that including rotor-support-foundation system as claimed in claim 9 and stator system,
The stator system includes being fixedly connected with the mounting base of the outer ring of the rolling bearing, the line expansion of the inner ring of the rolling bearing
Coefficient is lower than the linear expansion coefficient of the shaft, and the linear expansion coefficient of the outer ring of the rolling bearing is higher than the line of the mounting base
The coefficient of expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822271435.6U CN209654129U (en) | 2018-12-29 | 2018-12-29 | Rolling bearing, rotor-support-foundation system and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822271435.6U CN209654129U (en) | 2018-12-29 | 2018-12-29 | Rolling bearing, rotor-support-foundation system and engine |
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| Publication Number | Publication Date |
|---|---|
| CN209654129U true CN209654129U (en) | 2019-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822271435.6U Active CN209654129U (en) | 2018-12-29 | 2018-12-29 | Rolling bearing, rotor-support-foundation system and engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734672A (en) * | 2020-07-02 | 2020-10-02 | 中国航发常州兰翔机械有限责任公司 | Tangential injection lubricating system for turboshaft engine and using method thereof |
-
2018
- 2018-12-29 CN CN201822271435.6U patent/CN209654129U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734672A (en) * | 2020-07-02 | 2020-10-02 | 中国航发常州兰翔机械有限责任公司 | Tangential injection lubricating system for turboshaft engine and using method thereof |
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