CN1434224A - Ultrasonic bearing - Google Patents
Ultrasonic bearing Download PDFInfo
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- CN1434224A CN1434224A CN 03111074 CN03111074A CN1434224A CN 1434224 A CN1434224 A CN 1434224A CN 03111074 CN03111074 CN 03111074 CN 03111074 A CN03111074 A CN 03111074A CN 1434224 A CN1434224 A CN 1434224A
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- bearing
- ultrasonic
- bearing shell
- luffing bar
- supersonic transducer
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Abstract
The present invention relates to a new-type bearing, specially, it utilizes the ultrasonic vibration to form suspension support or bearing shell to support axle neck and improve lubrication to create a sliding bearing. Said ultrasonic bearing includes two forms of radial form and thrust form. In the radial ultrasonic bearing the ultrasonic transducer is fixedly connected on the external diameter of bearing shell by means of amplitude-change level, its axis and axis of the bearing shell are vertically crossed, two electrodes of the ultrasonic transducer are electrically connected with output end of ultrasonic generator, and an axial oil-storing cavity is set on the internal diameter of the bearing shell, and is communicated with oil-storing hole on the wall of bearing shell.
Description
Technical field
The present invention relates to a kind of novel bearing, it is lubricated with the structure sliding bearing to the suspension support and the improvement of axle journal specifically to utilize ultrasonic vibration to form bearing shell.
Background technique
Suspension support that the ultrasonic vibration surface is had and antifriction ability, promptly be studied many years ago and confirm and obtained practical application, adopt ultrasonic vibration to reduce the surface friction drag of the auxiliary fulcrum of astrovehicle as US Airways space flight department, people such as ThomasSkare utilize hyperacoustic acoustic levitation and extruding air film that drop is freely suspended in medium, open-birth professor in bear field thinks that ultrasound can make surface friction drag be reduced to original about 1/10 to 1/30, the loyal row professor of last plumage confirms the flat board with 40KHz frequency 2 μ m amplitude vibrations, and its surperficial kinetic pressure can reach 0.75MPa.
The working procedure of tradition sliding bearing, as shown in Figure 4: when bearing is static (among the figure shown in a), contact between axle journal and the bearing shell, the bearing play is full of lubricant oil; When bearing is started working (among the figure shown in the b), the axle journal rotating speed is also smaller, axle journal slowly climbs to the right along the bearing shell inwall, bring lubricant oil into oil film wedge, because the lubricant oil in bringing between bearing does not also form complete lubricant film, have serious friction and wear between axle journal and the bearing shell, this phenomenon is called the mixed friction state; Along with the raising of journal velocity ω, the lubricant oil in the oil film wedge increases and forms gradually complete lubricant film gradually, and axle journal is offset and is stabilized in certain eccentric position (among the figure shown in the c) left.Process as can be seen thus, (exist too in the out-of-work process of bearing when friction and wear mainly concentrates on bearing and starts working between axle journal and the bearing shell, its process similarly, solve the friction and wear problem of bearing, improve the operating life and the service behaviour of bearing, will avoid bearing shell and axle journal to be in contact with one another in the course of the work exactly as far as possible.
Summary of the invention
The suspension support ability lubricated with forming improvement that the present invention utilizes the ultrasonic vibration surface to be had constructed bearing, and promptly ultrasonic bearing avoids bearing axle journal when work to contact with bearing shell, reaches the purpose that improves bearing working life-span and service behaviour.
Above-mentioned purpose of the present invention is achieved in that accompanying drawings is as follows:
A kind of radial ultrasonic ripple bearing of the present invention, form by ultrasonic generator 1, supersonic transducer 18, luffing bar 5, bearing shell 7, supersonic transducer 18 is fixedly connected on the external diameter of bearing shell 7 by luffing bar 5, the shaft axis of its shaft axis and bearing shell 7 intersects vertically, two electrodes of supersonic transducer 18 are electrically connected with the output terminal of ultrasonic generator 1, be provided with axial shoe cream room 8 on the internal diameter of bearing shell 7, shoe cream room 8 is connected with oil supply hole 13 on being arranged on bearing shell 7 walls.
A kind of thrust ultrasonic bearing of the present invention, form by ultrasonic generator 1, supersonic transducer 18, luffing bar 5, bearing (ball) cover 22, luffing bar 5 is fixedly connected on the front shroud 4 of supersonic transducer 18 by double-screw bolt, the end face of luffing bar 5 is provided with cone shape hole 19, promptly as bearing shell, be provided with annular shoe cream room 20 at the base angle of luffing bar cone shape hole 19, sidewall is provided with oil supply hole; Luffing bar 5 upper ends are equipped with flinger ring 23 by screw 24 fixedly connected bearing (ball) covers 22 on the internal diameter of bearing (ball) cover 22; Two electrodes of supersonic transducer 18 are electrically connected with the output terminal of ultrasonic generator 1.
Described supersonic transducer 18 is a Langevin oscillator structure, and the usefulness screw is fastening forms by front shroud 4 piezoelectric constant 3 and back shroud 2 for it, and copper sheet is made electrode on folder between the piezoelectric ceramic wafer, and its nodal section 17 is located on the interface of front shroud 4 and piezoelectric constant 3.Also can be piezoelectric stack, twin lamella oscillator.
The ultrasonic bearing working principle is to produce high-frequency signal by ultrasonic generator to give supersonic transducer, make supersonic transducer be in resonant condition, produce the little amplitude of high frequency (μ m level) vibration, amplitude is amplified and pass to bearing shell by the luffing bar, make inner surface of bearing bush be in the ultrasonic vibration state, because suspension support and hydrodynamic lubrication ability that the ultrasonic vibration surface is had, axle journal just are suspended in the central position and form stable hydrodynamic lubrication oil film in the bearing play.
Shown in working procedure Fig. 5 of ultrasonic bearing: when bearing is static (among the figure shown in the d), axle journal and bearing shell are in contact condition, are full of lubricant oil in the bearing play; When bearing working, the bearing shell surface is under the ultrasonic vibration state, the suspending power of utilizing the bearing shell vibration surface to be had suspends axle journal because action of ultrasonic waves, between bearing in the stable hydrodynamic lubrication oil film of formation (among the figure shown in the e); During bearing working (among the figure shown in the f), during ultrasonic bearing work, avoided the friction and wear between axle journal and the bearing shell, do not had the mixed friction state, thereby improved the operating life and the service behaviour of bearing.
Description of drawings
Fig. 1 is a radial ultrasonic ripple bearing master pseudosection.
Fig. 2 is that A-A shown in Figure 1 is to sectional view.
Fig. 3 looks generalized section for thrust ultrasonic bearing master.
Fig. 4 is traditional sliding bearing working procedure schematic representation.
Fig. 5 is a radial ultrasonic ripple bearing working process schematic representation.
Embodiment
As mentioned above, the present invention utilizes ultrasonic vibration structure bearing, and its form is varied, and in general, ultrasonic bearing mainly is made up of supersonic transducer, ultrasonic generator, luffing bar, bearing shell etc.Can construct our needed bearing according to inventive concept, be that example is illustrated with radial ultrasonic ripple bearing and thrust ultrasonic bearing mainly here.
Embodiment 1: radial ultrasonic ripple bearing
With reference to Fig. 1, Fig. 2, radial ultrasonic ripple bearing is by being made up of ultrasonic generator 1, supersonic transducer 18, luffing bar 5, bearing shell 7, supersonic transducer 18 is fixedly connected on the external diameter of bearing shell 7 by luffing bar 5, the shaft axis of its shaft axis and bearing shell 7 intersects vertically, two electrodes of supersonic transducer 18 are electrically connected with the output terminal of ultrasonic generator 1, be provided with axial shoe cream room 8 on the internal diameter of bearing shell 7, shoe cream room 8 is connected with oil supply hole 13 on being arranged on bearing shell 7.
Supersonic transducer 18 is a Langevin oscillator structure, and usefulness screw is fastening forms by front shroud 4 piezoelectric constant heap 3 and back shroud 2 for it, makes electrode pressing from both sides copper sheet between the piezoelectric ceramic wafer.
This radial ultrasonic ripple bearing is symmetrically fixedly connected 4 supersonic transducers 18 on the external diameter of bearing shell 7, and the nodal section 17 usefulness screws 15 of transducer 18 are fixedly connected on the housing 9,10, and housing 9,10 is connected and fixed by bolt 11.
The circular groove 14 that housing 10 is provided with oil guiding hole 12 and is connected with oil supply hole 13 on the bearing shell 7.6 is axle journal among the figure, during use, bearing housing is fixed on the bearing support.
In the present embodiment, be fastenedly connected with double-screw bolt between the front shroud 4 of luffing bar 5 and supersonic transducer 18, the effect of luffing bar 5 is that the particle displacement of mechanical vibration or vibration velocity are amplified, can also mate the impedance between supersonic transducer 18 and the bearing shell 7 in addition, make energy be delivered in the load well; Fixedly connected with double-screw bolt between luffing bar 5 and the bearing shell 7.Supersonic transducer 18, luffing bar 5, bearing shell 7 have constituted the vibration system of ultrasonic bearing together, and they convert electric energy to mechanical energy, and the particle vibration displacement is amplified, and pass to bearing shell 7, make bearing shell 7 surfaces be in the ultrasonic vibration state.
Because supersonic transducer 18 and luffing bar 5 mounting points are in the axial neutral position of bearing shell 7, do not leak and can in time unimpededly not be full of shoe cream room 8 for guaranteeing lubricant oil, the oil supply hole 13 on the bearing shell 7 can not be positioned at the axial neutral position of bearing shell 7; Owing to the particularity of ultrasonic bearing structure, circular groove 14 leaves on the second bearing housing part 10 simultaneously, to guarantee that not having the ground of leakage by circular groove 14 after lubricant oil enters from oil guiding hole 12 be full of shoe cream room 8 from each oil supply hole 13.Be full of lubricant oil in the shoe cream room 8 of bearing, guarantee in the bearing working fully lubricated.Because the working surface of bearing shell 7 is in the ultrasonic vibration state, can initiatively form the hydrodynamic lubrication oil film, experiment shows, after the ultrasonic transducer generating vibration, lubricant oil can launch and form the oil film with certain pressure along bearing shell and journal surface, thereby guarantee the stable of dynamic pressure oil film, the formation of dynamic pressure oil film was distinguishing when this and traditional sliding bearing were worked.The formation ability of ultrasonic bearing dynamic pressure oil film and the movement velocity of axle journal are irrelevant, and relevant with the vibration situation on bearing shell surface.
Radial ultrasonic ripple bearing structure is simpler than hydrostatic bearing, more can work under low speed than hydraulic bearing.Thereby ultrasonic bearing is with a wide range of applications.
Embodiment 2: the thrust ultrasonic bearing
With reference to Fig. 3, the thrust ultrasonic bearing is made up of ultrasonic generator 1, supersonic transducer 18, luffing bar 5, bearing (ball) cover 22, luffing bar 5 is fixedly connected on the front shroud 4 of supersonic transducer 18 by double-screw bolt, the end face of luffing bar 5 is provided with cone shape hole 19, promptly as bearing shell, be provided with annular shoe cream room 20 at the base angle of luffing bar cone shape hole 19, sidewall is provided with oil supply hole 21; Luffing bar 5 upper ends are equipped with flinger ring 23 by screw 24 fixedly connected bearing (ball) covers 22 on the internal diameter of bearing (ball) cover 22; Two electrodes of supersonic transducer 18 are electrically connected with the output terminal of ultrasonic generator 1.
Described supersonic transducer 18 is a Langevin oscillator structure, and usefulness screw is fastening forms by front shroud 4 piezoelectric constant heap 3 and back shroud 2 for it, and copper sheet is made electrode on folder between the piezoelectric ceramic wafer, and its nodal section 17 is located at front shroud 4 and piezoelectric constant and is piled on 3 the interface.25 is axle journal among the figure.During use, supersonic transducer nodal section 17 is fixed on the bearing support.
Ultrasonic generator 1 produces high-frequency signal and gives supersonic transducer 18, when making it be in resonant condition, become spacer bar 5 transmitting vibrations and amplitude is amplified, this moment, the cone shape hole surface of luffing bar was in the ultrasonic vibration state, produced acoustic levitation ability and hydrodynamic lubrication ability, and axle suspension is floated, lubricant oil in the shoe cream room 20 forms stable dynamic pressure oil film under the ultrasonic vibration effect simultaneously, reach lubrication effect, play the effect that resistance falls in antifriction, to reach the purpose that improves bearing working life-span and service behaviour.
The thrust ultrasonic bearing can be used for constructing middle or small bearing, long working life, rotating speed height.
Claims (6)
1. radial ultrasonic ripple bearing, it is characterized in that forming by ultrasonic generator 1, supersonic transducer 18, luffing bar 5, bearing shell 7, supersonic transducer 18 is fixedly connected on the external diameter of bearing shell 7 by luffing bar 5, the shaft axis of its shaft axis and bearing shell 7 intersects vertically, two electrodes of supersonic transducer 18 are electrically connected with the output terminal of ultrasonic generator 1, be provided with axial shoe cream room 8 on the internal diameter of bearing shell 7, shoe cream room 8 is connected with oil supply hole 13 on being arranged on bearing shell 7.
2. a kind of radial ultrasonic ripple bearing according to claim 1 is characterized in that supersonic transducer 18 is Langevin oscillator structure, and usefulness screw is fastening forms by front shroud 4 piezoelectric constant heap 3 and back shroud 2 for it, makes electrode pressing from both sides copper sheet between the piezoelectric ceramic wafer.
3. according to claim 1,2 described a kind of radial ultrasonic ripple bearings, it is characterized in that fixedly connected 4 supersonic transducers 18 symmetrically on the external diameter of bearing shell 7, the nodal section 17 usefulness screws 15 of transducer 18 are fixedly connected on the housing 9,10, and housing 9,10 is connected and fixed by bolt 11.
4. according to claim 1,3 described a kind of radial ultrasonic ripple bearings, the circular groove 14 that the housing 10 under it is characterized in that is provided with oil guiding hole 12 and is connected with oil supply hole 13 on the bearing shell 7.
5. thrust ultrasonic bearing, it is characterized in that forming by ultrasonic generator 1, supersonic transducer 18, luffing bar 5, bearing (ball) cover 22, luffing bar 5 is fixedly connected on the front shroud 4 of supersonic transducer 18 by double-screw bolt, the end face of luffing bar 5 is provided with cone shape hole 19, promptly as bearing shell, be provided with annular shoe cream room 20 at the base angle of luffing bar cone shape hole 19, sidewall is provided with oil supply hole 21; Luffing bar 5 upper ends are equipped with flinger ring 23 by screw 24 fixedly connected bearing (ball) covers 22 on the internal diameter of bearing (ball) cover 22; Two electrodes of supersonic transducer 18 are electrically connected with the output terminal of ultrasonic generator 1.
6. a kind of thrust ultrasonic bearing according to claim 5, it is characterized in that described supersonic transducer 18 is Langevin oscillator structure, the usefulness screw is fastening forms by front shroud 4, piezoelectric constant 3 and back shroud 2 for it, and copper sheet is made electrode on folder between the piezoelectric ceramic wafer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03111074 CN1201097C (en) | 2003-02-25 | 2003-02-25 | Ultrasonic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03111074 CN1201097C (en) | 2003-02-25 | 2003-02-25 | Ultrasonic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1434224A true CN1434224A (en) | 2003-08-06 |
| CN1201097C CN1201097C (en) | 2005-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03111074 Expired - Fee Related CN1201097C (en) | 2003-02-25 | 2003-02-25 | Ultrasonic bearing |
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|---|---|
| CN (1) | CN1201097C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823576A (en) * | 2009-03-02 | 2010-09-08 | 克罗内斯股份公司 | Wrapping machine and control method thereof |
| CN101976990A (en) * | 2010-10-25 | 2011-02-16 | 南京航空航天大学 | Near field ultrasonic suspension bearing system and electric excitation manner thereof |
| CN102242769A (en) * | 2011-05-27 | 2011-11-16 | 大连交通大学 | Radial contained squeeze-film aerostatic bearing |
| CN102713484A (en) * | 2009-10-13 | 2012-10-03 | 艾伯纳工业筑炉有限公司 | Device for heat-treating sheet metal strips |
| CN104454986A (en) * | 2014-10-28 | 2015-03-25 | 湖南大学 | Ultrasonic aerodynamic bearing |
| CN104675859A (en) * | 2015-03-16 | 2015-06-03 | 湖南大学 | Ultrasonic thrust air bearing with curve grooves |
| CN104895827A (en) * | 2015-06-19 | 2015-09-09 | 湖南大学 | Air compressor with ultrasonic bearings |
| CN106370349A (en) * | 2016-08-29 | 2017-02-01 | 大连理工大学 | Gyro rotor mass center position accurate adjustment device and method based on ultrasonic antifriction effect |
| CN107152456A (en) * | 2017-07-25 | 2017-09-12 | 顺德职业技术学院 | Porous ultrasonic bearing |
| CN108223574A (en) * | 2018-01-15 | 2018-06-29 | 大连交通大学 | A kind of bullet train radial ultrasonic suspension bearing |
| CN109780056A (en) * | 2019-01-15 | 2019-05-21 | 浙江大学 | Can adaptive stabilizing bearing inner race position ultrasound suspending transverse bearing |
| AT522030A1 (en) * | 2018-12-21 | 2020-07-15 | Anton Paar Gmbh | Measuring drive with ultrasound bearing shaft, measuring device, method and use |
-
2003
- 2003-02-25 CN CN 03111074 patent/CN1201097C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823576A (en) * | 2009-03-02 | 2010-09-08 | 克罗内斯股份公司 | Wrapping machine and control method thereof |
| CN101823576B (en) * | 2009-03-02 | 2013-03-13 | 克罗内斯股份公司 | Packaging machine and control method thereof |
| CN102713484A (en) * | 2009-10-13 | 2012-10-03 | 艾伯纳工业筑炉有限公司 | Device for heat-treating sheet metal strips |
| CN101976990A (en) * | 2010-10-25 | 2011-02-16 | 南京航空航天大学 | Near field ultrasonic suspension bearing system and electric excitation manner thereof |
| CN102242769A (en) * | 2011-05-27 | 2011-11-16 | 大连交通大学 | Radial contained squeeze-film aerostatic bearing |
| CN104454986A (en) * | 2014-10-28 | 2015-03-25 | 湖南大学 | Ultrasonic aerodynamic bearing |
| CN104675859A (en) * | 2015-03-16 | 2015-06-03 | 湖南大学 | Ultrasonic thrust air bearing with curve grooves |
| CN104895827A (en) * | 2015-06-19 | 2015-09-09 | 湖南大学 | Air compressor with ultrasonic bearings |
| CN106370349A (en) * | 2016-08-29 | 2017-02-01 | 大连理工大学 | Gyro rotor mass center position accurate adjustment device and method based on ultrasonic antifriction effect |
| CN106370349B (en) * | 2016-08-29 | 2019-01-01 | 大连理工大学 | A kind of gyrorotor centroid position precision adjustment unit and method based on ultrasonic antifriction effect |
| CN107152456A (en) * | 2017-07-25 | 2017-09-12 | 顺德职业技术学院 | Porous ultrasonic bearing |
| CN107152456B (en) * | 2017-07-25 | 2023-04-18 | 顺德职业技术学院 | Porous ultrasonic bearing |
| CN108223574A (en) * | 2018-01-15 | 2018-06-29 | 大连交通大学 | A kind of bullet train radial ultrasonic suspension bearing |
| AT522030A1 (en) * | 2018-12-21 | 2020-07-15 | Anton Paar Gmbh | Measuring drive with ultrasound bearing shaft, measuring device, method and use |
| AT522030B1 (en) * | 2018-12-21 | 2022-07-15 | Anton Paar Gmbh | Measuring drive with ultrasonic bearing shaft, rheometer, method and use |
| US11747253B2 (en) | 2018-12-21 | 2023-09-05 | Anton Paar Gmbh | Measuring drive having ultrasound-mounted shaft, measuring device, method and use |
| CN109780056A (en) * | 2019-01-15 | 2019-05-21 | 浙江大学 | Can adaptive stabilizing bearing inner race position ultrasound suspending transverse bearing |
| CN109780056B (en) * | 2019-01-15 | 2023-10-31 | 浙江大学 | Ultrasonic suspension radial bearing capable of self-adaptively stabilizing position of bearing inner ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1201097C (en) | 2005-05-11 |
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Granted publication date: 20050511 Termination date: 20130225 |