CN108869532A - Novel kinetic pressure gas thrust bearing based on centripetal pressurization principle - Google Patents
Novel kinetic pressure gas thrust bearing based on centripetal pressurization principle Download PDFInfo
- Publication number
- CN108869532A CN108869532A CN201811063465.6A CN201811063465A CN108869532A CN 108869532 A CN108869532 A CN 108869532A CN 201811063465 A CN201811063465 A CN 201811063465A CN 108869532 A CN108869532 A CN 108869532A
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- CN
- China
- Prior art keywords
- bearing
- main shaft
- thrust disc
- centripetal
- pressure gas
- 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.)
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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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention relates to the technical field of rotating machinery, the specifically axial direction positioning device in rotating machinery field more particularly to a kind of aero dynamic bearing for balance rotating machinery axial thrust.The method of the present invention, including：Main shaft, bearing shell and thrust disc；Main shaft and thrust disc are integration processing or are assembled into one；The identical tapered recesses of multiple specifications are uniformly provided on the positive and negative surface of thrust disc, for main axis direction, the molded line of tapered recesses axial cross section is in bending forward；For axle bush sleeve loaded on main shaft, respectively there are a bearing shell in the top and bottom of thrust disc.Technical solution of the present invention solves the technical issues of oil film hydrodynamic bearing in the prior art can not work under the operating condition that high temperature, ultrahigh speed rotate.
Description
Technical field
The present invention relates to the technical field of rotating machinery, the specifically axial direction positioning device in rotating machinery field, especially
It is related to a kind of aero dynamic bearing for balance rotating machinery axial thrust.
Background technique
High-speed rotating machine, gas turbine, express pump etc. are for balancing axial thrust, in addition to being arranged symmetrically, being arranged
Also carry out balancing axial thrust commonly using thrust bearing or thrust bearing shoe valve outside through flow hole.Conventional bearing of moving will receive limit speed
Limitation, can make to generate high temperature between rubbing surface when revolving speed is excessively high, influence lubricant function, oil film be destroyed, so as to cause body of moving
Tempering or element scuffing failure.In large-size steam turbine, oil film is formed between thrust bearing shoe valve and thrust disc at runtime, oil film both rose
To lubricating action, and play conductive force heat transfer effect.But this system needs complicated fuel feeding, oil return filter and cooling
System.
In the case where certain special occasions such as high temperature, ultrahigh speed rotary work, oil film hydrodynamic bearing can not be competent at.So
And since air viscosity is low and it is small to vary with temperature, air bearing shows big advantage at this time.Air bearing is made with air
For the sliding bearing of lubricant, have many advantages, such as small viscosity, high temperature resistant and it is pollution-free high-speed grinding head, high-speed blower,
It is applied in the equipment such as gyroscope instrument.
Compared with hydrostatic bearing, hydrodynamic bearing does not need external air source, but leans on itself rotation of thrust disc by air generation
Enter to be formed air film in wedge gap to provide thrust.
In current research, hydrodynamic bearing is also fewer in the research of air thrust bearing based on spring bearing, and
And in air thrust bearing, bearing departure rotary speed is higher when rotor start and stop, and thrust disc and thrust bearing, which are in, before taking off rubs
It wipes or therefore boundary friction state proposes harsh requirement to thrust disc and bearing material abrasion resistance.So, if energy
Departure rotary speed is enough greatly lowered, reduces thrust disc and bearing wear time, will lengthen the life and increase maintenance cycle to thrust bearing
Have great importance.
For it is above-mentioned the problems of in the prior art, researching and designing is a kind of novel based on the new of centripetal pressurization principle
Type kinetic pressure gas pushes bearing, so that it is very necessary for overcoming the problems of in the prior art.
Summary of the invention
The technical issues of can not being worked under the operating condition that high temperature, ultrahigh speed rotate according to oil film hydrodynamic bearing set forth above,
And provide a kind of novel kinetic pressure gas promotion bearing based on centripetal pressurization principle.The present invention is not needed using hydrodynamic bearing mainly
External air source, but itself rotation by thrust disc substitutes into air in wedge gap, to form air film to provide thrust.
The technological means that the present invention uses is as follows：
A kind of contracted based on the centripetal novel kinetic pressure gas impeller-hub for being pressurized principle is included：Main shaft, bearing shell and thrust disc；
Further, main shaft and thrust disc are integration processing or are assembled into one；
Further, the identical tapered recesses of multiple specifications are uniformly provided on the positive and negative surface of thrust disc, main shaft is turned
For dynamic direction, the molded line of tapered recesses axial cross section is in bending forward；
Further, for axle bush sleeve loaded on main shaft, respectively there are a bearing shell in the top and bottom of thrust disc.
Further, tapered recesses extend to the place away from main shaft certain distance from outer diameter, and with smooth thrust disk
Natural transition.
Further, it is tapered to prolong radial centripetal for tapered recesses circumferential cross-section；Tapered recesses axial cross section prolongs radial centripetal gradually
Contracting；It is tapered that tapered recesses radial section prolongs circumferential movement opposite direction；So that by the air that circumferentially enters rotating gravure drive
Under centripetal compression.
Further, inner surface of bearing bush is between smooth mirror surface, with thrust disc there are air film gap, inner surface of bearing bush with it is close
Main shaft side is machined with bearing shell sealing gland chamfering.
Further, thrust disc sealing gland chamfering, the chamfering and inner surface of bearing bush and master are provided between thrust disc and main shaft
The bearing shell sealing gland chamfering of axis contact side is mutually agreed with, and sealing gland is formed, and when thrust disc bears load, gap reduces, and forms sealing gland, benefit
In pressure maintaining.
Compared with the prior art, the present invention has the following advantages that：
The configuration of the present invention is simple is reliable, and departure rotary speed is low, thrust disc and thrust bearing shoe valve when can be greatly lowered or avoid start and stop
Abrasion, maintenance period it is long, biggish bearing capacity can be obtained under relatively low revolving speed, is suitable for popularization and application to rotation
In machinery.
To sum up, apply the technical scheme of the present invention solve oil film hydrodynamic bearing in the prior art can not be in high temperature, super
The technical issues of working under high-speed rotating operating condition.
The present invention can be widely popularized in rotating machinery field based on the above reasons.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is main view of the present invention；
Fig. 2 is axonometric drawing of the present invention；
Fig. 3 is solid bearing liner cutaway view of the present invention；
Fig. 4 is main shaft and thrust disc top view；
Fig. 5 is the D-D view of Fig. 4；
Fig. 6 is the A-A view of Fig. 4；
Fig. 7 is the B-B view of Fig. 4；
Fig. 8 is the C-C view of Fig. 4；
Fig. 9 is bearing shell top view；
Figure 10 is the E-E view of Fig. 9.
In figure：1, main shaft 2, bearing shell 3, thrust disc 4, thrust disc sealing gland chamfering 5, bearing shell sealing gland chamfering 6, tapered recessed
Slot.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.It is real to the description of at least one exemplary embodiment below
It is merely illustrative on border, never as to the present invention and its application or any restrictions used.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be clear that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.Technology known for person of ordinary skill in the relevant, side
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, appointing should be construed as merely illustratively to occurrence, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is limiting the scope of the invention：The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under its device or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of invention protection scope.
As shown in Figure 1-3, the present invention provides a kind of novel kinetic pressure gas based on centripetal pressurization principle to push bearing,
It is characterized in that, the novel kinetic pressure gas impeller-hub based on centripetal pressurization principle, which is contracted, to be included：Main shaft 1, bearing shell 2 and thrust disc
3；Main shaft 1 and thrust disc 3 are integration processing or are assembled into one；Multiple rule are uniformly provided on the positive and negative surface of thrust disc 3
The identical tapered recesses 6 of lattice, for 1 rotation direction of main shaft, the molded line of 6 axial cross section of tapered recesses is in bending forward；Axis
Watts 2 are set on main shaft 1, and respectively there are a bearing shell 2 in the top and bottom of thrust disc 3.
As shown in Figure 4-8, tapered recesses 6 extend to the place away from main shaft certain distance from outer diameter, and with smooth thrust
Disk nature transition.
As shown in Figure 4-8, tapered recesses 6, it is tapered that circumferential cross-section prolongs radial centripetal；Its axial cross section prolongs radial centripetal gradually
Contracting；It is tapered that its radial section prolongs circumferential movement opposite direction.
As shown in Fig. 1-3 and 9-10, there are air film gap, bearing shells 2 between smooth mirror surface, with thrust disc 3 for 2 inner surface of bearing shell
Inner surface and close 1 side of main shaft are machined with bearing shell sealing gland chamfering 5.
As shown in Fig. 2, thrust disc sealing gland chamfering 4 is provided between thrust disc 3 and main shaft 1, the chamfering and 2 inner surface of bearing shell
5 phase of bearing shell sealing gland chamfering for contacting side with main shaft 1 is agreed with, and sealing gland is formed.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that：Its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of novel kinetic pressure gas based on centripetal pressurization principle pushes bearing, which is characterized in that described based on centripetal increasing
The novel kinetic pressure gas impeller-hub of pressure principle, which is contracted, to be included：Main shaft (1), bearing shell (2) and thrust disc (3)；
The main shaft (1) and thrust disc (3) is integration processing or is assembled into one；
The identical tapered recesses of multiple specifications (6) are uniformly provided on the positive and negative surface of the thrust disc (3), with regard to main shaft (1)
For rotation direction, the molded line of tapered recesses (6) axial cross section is in bending forward；
The bearing shell (2) is set on main shaft (1), and respectively there are a bearing shell (2) in the top and bottom of thrust disc (3).
2. the novel kinetic pressure gas according to claim 1 based on centripetal pressurization principle pushes bearing, which is characterized in that institute
The tapered recesses (6) stated extend to the place away from main shaft certain distance from outer diameter, and with smooth thrust disk nature transition.
3. the novel kinetic pressure gas according to claim 1 based on centripetal pressurization principle pushes bearing, which is characterized in that institute
The tapered recesses (6) stated, it is tapered that circumferential cross-section prolongs radial centripetal.
4. the novel kinetic pressure gas according to claim 1 based on centripetal pressurization principle pushes bearing, which is characterized in that institute
The tapered recesses (6) stated, it is tapered that axial cross section prolongs radial centripetal.
5. the novel kinetic pressure gas according to claim 1 based on centripetal pressurization principle pushes bearing, which is characterized in that institute
The tapered recesses (6) stated, it is tapered that radial section prolongs circumferential movement opposite direction.
6. the novel kinetic pressure gas according to claim 1 based on centripetal pressurization principle pushes bearing, which is characterized in that institute
Bearing shell (2) inner surface stated is between smooth mirror surface, with thrust disc (3) there are air film gap, bearing shell (2) inner surface and close to main shaft
(1) side is machined with bearing shell sealing gland chamfering (5).
7. the novel kinetic pressure gas according to claim 1 based on centripetal pressurization principle pushes bearing, which is characterized in that institute
Thrust disc sealing gland chamfering (4), the chamfering and bearing shell (2) inner surface and main shaft are provided between the thrust disc (3) stated and main shaft (1)
(1) the bearing shell sealing gland chamfering (5) for contacting side is mutually agreed with, and forms sealing gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811063465.6A CN108869532A (en) | 2018-09-12 | 2018-09-12 | Novel kinetic pressure gas thrust bearing based on centripetal pressurization principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811063465.6A CN108869532A (en) | 2018-09-12 | 2018-09-12 | Novel kinetic pressure gas thrust bearing based on centripetal pressurization principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108869532A true CN108869532A (en) | 2018-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811063465.6A Pending CN108869532A (en) | 2018-09-12 | 2018-09-12 | Novel kinetic pressure gas thrust bearing based on centripetal pressurization principle |
Country Status (1)
| Country | Link |
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| CN (1) | CN108869532A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886767A (en) * | 2018-12-30 | 2020-03-17 | 湖南崇德工业科技有限公司 | Gas suspension thrust bearing |
| TWI705189B (en) * | 2019-08-27 | 2020-09-21 | 建準電機工業股份有限公司 | Bearing system |
| CN112160981A (en) * | 2020-08-26 | 2021-01-01 | 珠海格力电器股份有限公司 | Axial bearing rotor, axial bearing, motor and compressor |
| CN113330225A (en) * | 2019-02-04 | 2021-08-31 | 伊格尔工业股份有限公司 | Sliding component |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1558203A (en) * | 1976-01-10 | 1979-12-19 | Skf Kugellagerfabriken Gmbh | Self-pressurising plain thrust bearing |
| JPH01166820U (en) * | 1988-04-28 | 1989-11-22 | ||
| JPH0961742A (en) * | 1995-08-24 | 1997-03-07 | Copal Electron Co Ltd | Dynamic air bearing type optical deflector |
| JPH1182487A (en) * | 1997-09-11 | 1999-03-26 | Hitachi Powdered Metals Co Ltd | Porous bearing |
| JP2001012456A (en) * | 1999-07-02 | 2001-01-16 | Sumitomo Electric Ind Ltd | Thrust dynamic pressure bearing |
| JP2002070866A (en) * | 2000-09-01 | 2002-03-08 | Nippon Densan Corp | Hydrodynamic thrust bearing and spindle motor provided with the same |
| JP2003113837A (en) * | 2001-10-05 | 2003-04-18 | Nippon Densan Corp | Dynamic pressure bearing device and spindle motor using it |
| CN102261374B (en) * | 2011-06-15 | 2014-04-09 | 罗立峰 | Dynamic pressure gas thrust ceramic bearing |
| CN104736904A (en) * | 2013-01-16 | 2015-06-24 | 伊格尔工业股份有限公司 | Sliding part |
| CN104895917A (en) * | 2015-05-19 | 2015-09-09 | 罗立峰 | Hybrid type dynamic-pressure gas thrust bearing |
-
2018
- 2018-09-12 CN CN201811063465.6A patent/CN108869532A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1558203A (en) * | 1976-01-10 | 1979-12-19 | Skf Kugellagerfabriken Gmbh | Self-pressurising plain thrust bearing |
| JPH01166820U (en) * | 1988-04-28 | 1989-11-22 | ||
| JPH0961742A (en) * | 1995-08-24 | 1997-03-07 | Copal Electron Co Ltd | Dynamic air bearing type optical deflector |
| JPH1182487A (en) * | 1997-09-11 | 1999-03-26 | Hitachi Powdered Metals Co Ltd | Porous bearing |
| JP2001012456A (en) * | 1999-07-02 | 2001-01-16 | Sumitomo Electric Ind Ltd | Thrust dynamic pressure bearing |
| JP2002070866A (en) * | 2000-09-01 | 2002-03-08 | Nippon Densan Corp | Hydrodynamic thrust bearing and spindle motor provided with the same |
| JP2003113837A (en) * | 2001-10-05 | 2003-04-18 | Nippon Densan Corp | Dynamic pressure bearing device and spindle motor using it |
| CN102261374B (en) * | 2011-06-15 | 2014-04-09 | 罗立峰 | Dynamic pressure gas thrust ceramic bearing |
| CN104736904A (en) * | 2013-01-16 | 2015-06-24 | 伊格尔工业股份有限公司 | Sliding part |
| CN104895917A (en) * | 2015-05-19 | 2015-09-09 | 罗立峰 | Hybrid type dynamic-pressure gas thrust bearing |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886767A (en) * | 2018-12-30 | 2020-03-17 | 湖南崇德工业科技有限公司 | Gas suspension thrust bearing |
| CN113330225A (en) * | 2019-02-04 | 2021-08-31 | 伊格尔工业股份有限公司 | Sliding component |
| CN113330225B (en) * | 2019-02-04 | 2023-08-22 | 伊格尔工业股份有限公司 | Sliding member |
| TWI705189B (en) * | 2019-08-27 | 2020-09-21 | 建準電機工業股份有限公司 | Bearing system |
| US11181142B2 (en) | 2019-08-27 | 2021-11-23 | Sunonwealth Electric Machine Industry Co., Ltd. | Bearing system |
| CN112160981A (en) * | 2020-08-26 | 2021-01-01 | 珠海格力电器股份有限公司 | Axial bearing rotor, axial bearing, motor and compressor |
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Application publication date: 20181123 |
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