CN102589882A - Radial bearing static and dynamic excitation device consisting of spring and piezoelectric actuator - Google Patents
Radial bearing static and dynamic excitation device consisting of spring and piezoelectric actuator Download PDFInfo
- Publication number
- CN102589882A CN102589882A CN2012100078172A CN201210007817A CN102589882A CN 102589882 A CN102589882 A CN 102589882A CN 2012100078172 A CN2012100078172 A CN 2012100078172A CN 201210007817 A CN201210007817 A CN 201210007817A CN 102589882 A CN102589882 A CN 102589882A
- Authority
- CN
- China
- Prior art keywords
- dynamic
- bearing
- load
- static
- static load
- 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.)
- Granted
Links
Images
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a radial bearing static and dynamic excitation device consisting of a spring and a piezoelectric actuator. The radial bearing static and dynamic excitation device consists of a static load applying device, a dynamic load excitation device, a bearing lower tile body, a cylindrical supporting block and a forcing tile, wherein the static load applying device can apply a static load to a test bearing, can adjust a static load screw to compress a static load disc spring, and can transfer static load force to the forcing tile through the cylindrical supporting block; the dynamic load excitation device can apply dynamic excitation such as sine-wave excitation, step excitation, pulse excitation, random excitation and pseudorandom excitation to the test bearing; a dynamic load screw can adjust an initial position of the piezoelectric actuator; under the action of a control signal, the piezoelectric actuator is correspondingly deformed to compress a dynamic load disc spring; and dynamic excitation force is transferred to the forcing tile through the cylindrical supporting block. The radial bearing static and dynamic excitation device consisting of the spring and the piezoelectric actuator can simultaneously apply the static load and the dynamic excitation to the test bearing and can serve as a test bearing loading and excitation device for a novel bearing testing platform, and the defect that the static load and the dynamic excitation are required to be applied to a bearing by using different devices on the conventional bearing testing platform is overcome.
Description
Technical field:
The invention belongs to the sliding bearing technical field, particularly bearing test-bed applies static load and dynamic exciting to bearing, also reaches the so-called quiet dynamic exciting device of transverse bearing that is made up of spring and piezo-activator.
Background technology:
Sliding bearing stiffness and damping dynamic coefficients is the important parameter that characterizes bearing military service performance.In traditional bearing test, adopt corrugated tube that bearing is applied static load usually, the actual bearer operating mode when being on active service with the simulation bearing; Adopt vibrator that bearing is applied dynamic exciting, with the disturbance under the operating condition under arms of simulation bearing.Adopt different devices that test bearing is applied static load and dynamic exciting in traditional bearing test, numerous instruments that use in the test and operating condition of test have all that each Unit Installation all has error unavoidably on accidental instability and the testing table; Because the linear requirement of oil film generally can only be about 10 μ m with the displacement disturbance that vibrator evokes, the unavoidable signal to noise ratio (S/N ratio) of so little signal is low, and this just makes measuring accuracy be difficult to guarantee (Yuan Xiaoyang, Xi'an Communications University's master thesis, 1985).Therefore; Adopt the quiet dynamic exciting device of transverse bearing that constitutes by spring and piezo-activator that can apply static load and dynamic exciting in a kind of bearing test simultaneously; To simplify the bearing test-bed structure and to reduce testing equipment; Improving bearing rigidity damping dynamic coefficients accuracy of identification, is the important development requirement of sliding bearing dynamic characteristic identification test technology.
Summary of the invention:
The objective of the invention is to overcome the traditional bearing testing table and need adopt different device respectively bearing to be applied the deficiency of static load and dynamic exciting, propose a kind of quiet dynamic exciting device of transverse bearing that constitutes by spring and piezo-activator.
The objective of the invention is to realize like this, it is made up of static load charger, dynamic load exciting device, cylinder back-up block, and the lower half bearing body of transverse bearing is radially passed on the top of static load charger; It is inner that the dynamic load exciting device is installed on the static load charger; The cylinder back-up block is positioned at static load charger top, and contacts with the dynamic load exciting device; The cylinder back-up block equally radially passes the lower half bearing body of transverse bearing; The cylinder back-up block supports the reinforcing watt in the transverse bearing under the effect of static load charger and dynamic load exciting device.
The static load charger can apply static load to test bearing, regulates the static load screw and makes its compression static load disk spring, through the cylinder back-up block static load power is passed on afterburning watt; The dynamic load exciting device can apply dynamic exciting to test bearing; Comprise string wave excitation, step exciting, pulse excitation, exciting, pseudorandom exciting etc. at random; The initial position of dynamic load screw adjustable piezoelectric actuator; Piezo-activator produces corresponding distortion compression dynamic load disk spring under the control signal effect, through the cylinder back-up block dynamic exciting force is passed on afterburning watt.This bearing loads exciting device can apply static load and dynamic exciting to test bearing simultaneously, therefore is referred to as the quiet dynamic exciting device of transverse bearing that is made up of spring and piezo-activator.
The invention has the beneficial effects as follows: can apply static load and dynamic exciting to test bearing simultaneously, thereby simplify the bearing test-bed structure and reduce testing equipment, improve bearing dynamic coefficients accuracy of identification.
Description of drawings:
Fig. 1 is the structural representation of first kind of embodiment proposing of the present invention.
Fig. 2 is the structural representation of second kind of embodiment proposing of the present invention.
Fig. 3 is the structural representation of the third embodiment of proposing of the present invention.
Wherein: 1 is afterburning watt; 2 is the lower half bearing body; Revolve key till 3; 4 is the cylinder back-up block; 5 is the static load butterfly spring; 6 only revolve the bearing dish for static load; 7 only revolve bearing for static load; 8 is the static load screw; 9 is the dynamic load screw; 10 only revolve bearing for dynamic load; 11 only revolve the bearing dish for dynamic load; 12 is piezo-activator; 13 is the dynamic load butterfly spring; 14 is dynamic load butterfly spring groove; 15 is feather key.
Embodiment:
Below in conjunction with accompanying drawing the present invention is done further detailed description:
Referring to accompanying drawing 1, propose according to the present invention the first kind embodiment by the quiet dynamic exciting device of transverse bearing that spring and piezo-activator constitute is the quiet dynamic exciting device of so-called tilting-pad radial bearing.It is made up of static load charger, dynamic load exciting device, lower half bearing body, cylinder back-up block and afterburning watt.Afterburning watt 1 is tilting pad; The arc surface retention wire of the face of cylinder push rod of its back groove arc surface and cylinder back-up block 4 contacts; Under the effect of bearing film power, can freely swing around the face of cylinder of cylinder back-up block 4 push rod fulcrum for afterburning watt 1, the arc surface radius-of-curvature of the face of cylinder push rod through designing reinforcing watt 1 back groove arc surface and cylinder back-up block 4 can reasonably be arranged contact stress.Cylinder back-up block 4 face of cylinder push rod opposites are processed with cycle spring seat and inner ring spring base.The static load charger can apply static load to test bearing, it by lower half bearing body 2, only revolve key 3, static load butterfly spring 5, static load and only revolve that bearing dish 6, static load are only revolved bearing 7 and static load screw 8 constitutes.Static load load screw 8 can be rotated in the threaded hole of lower half bearing body 2, makes its compression static load disk spring 5 change static loading force through regulating static load load screw 8, and the maximum static lotus that the static load charger can apply is 200KN.Static load is only revolved bearing 7 can adopt thrust bearing, radial bearing etc., and it is installed in static load and only revolves between bearing dish 6 and the static load screw 8, and it act as and transmits the static load spring force.Cycle spring seat and static load that static load butterfly spring 5 is installed in cylinder back-up block 4 are only revolved between the bearing dish 6, and the static load spring force that its compression is produced through rotation static load screw 8 is passed on afterburning watt 1 through cylinder back-up block 4.Only revolve key 3 and be assemblied in cylinder back-up block 4 respectively and only revolve in the keyway of bearing dish 6 with static load, it act as and prevents that cylinder back-up block 4 and static load from only revolving rotating in a circumferential direction of bearing dish 6 and to their axially-movable guiding.The dynamic load exciting device can apply dynamic exciting to test bearing; Comprise string wave excitation, step exciting, pulse excitation, exciting, pseudorandom exciting etc. at random; It only revolves bearing 10, dynamic load by dynamic load screw 9, dynamic load and only revolves bearing dish 11, piezo-activator 12, dynamic load butterfly spring 13, dynamic load butterfly spring groove 14 and constitute, and the maximal value of exciting force is more than or equal to 2000N.Dynamic load load screw 9 can be rotated in the threaded hole of static load screw 8 to regulate the initial compression amount of piezo-activator 12.Dynamic load is only revolved bearing 10 can adopt thrust bearing, radial bearing etc., and it is installed in dynamic load and only revolves between bearing dish 11 and the dynamic load screw 9, and dynamic load screw 9 roots are processed with the bearing seat that matches.The bearing saddle bore opposite that dynamic load is only revolved bearing dish 11 is processed with the face of cylinder, and it is interference fitted in the cylindrical hole of piezo-activator 12, and the cylindrical hole opposite of piezo-activator 12 is processed with the face of cylinder, and it is interference fitted in the endoporus of dynamic load disk spring groove 14.Dynamic load butterfly spring 13 is installed between the inner ring spring base and dynamic load disk spring groove 14 of cylinder back-up block 4; Piezo-activator 12 produces distortion compression dynamic load disk spring 13 and produces the corresponding dynamic exciting force under the control signal effect, dynamically exciting force is delivered on afterburning watt 1 through cylinder back-up block 4.Feather key 15 is installed in the dynamic load disk spring groove external cylindrical surface keyway, and it act as to piezo-activator axially-movable and leads and prevent that it from rotating in a circumferential direction.In order to eliminate the influence of the rigidity of structure to the bearing dynamic characteristic test, the composite rigidity of static load disk spring 5, dynamic load butterfly spring 13 and piezo-activator 12 needs less than 5% of bearing film rigidity.The quiet dynamic exciting device of this tilting-pad radial bearing can apply static load and dynamic exciting to test bearing simultaneously, and simplifies the bearing test-bed structure, improves bearing dynamic coefficients accuracy of identification.
Secondly, with reference to the structural representation shown in the accompanying drawing 2.The embodiment of propose according to the present invention the second kind quiet dynamic exciting device of transverse bearing that is made up of spring and piezo-activator is the quiet dynamically exciting device by force of so-called tilting-pad radial bearing.It is made up of static load charger, dynamic load exciting device, lower half bearing body, cylinder back-up block and afterburning watt.The static load charger of accompanying drawing 2, cylinder back-up block, lower half bearing body and afterburning watt are identical with static load charger, cylinder back-up block, lower half bearing body and the afterburning tile structure shown in the above-mentioned accompanying drawing 1; The dynamic load exciting device of accompanying drawing 2 and the dynamic load exciting device structure similar shown in the above-mentioned accompanying drawing 1, difference is that the dynamic load exciting device of accompanying drawing 2 cancelled dynamic load disk spring, dynamic load butterfly spring groove and feather key.The straight pin head of piezo-activator 11 is interference fitted on the cylinder back-up block 4.Adopt the characteristics of the dynamic load exciting device of this structure to be to strengthen the rigidity of dynamic exciting device; Therefore the exciting force that the dynamic exciting force of its generation produces greater than the dynamic exciting device shown in the accompanying drawing 1 under identical control signal effect is called the quiet dynamically strong exciting device of tilting-pad radial bearing.
At last, with reference to the structural representation shown in the accompanying drawing 3.The third that proposes according to the present invention is the so-called fixing quiet dynamic exciting device of watt transverse bearing by the embodiment of the quiet dynamic exciting device of transverse bearing that spring and piezo-activator constitute.It is made up of static load charger, dynamic load exciting device, lower half bearing body, cylinder back-up block and afterburning watt.Static load charger shown in static load charger shown in the accompanying drawing 3, dynamic load exciting device, lower half bearing body, cylinder back-up block and the above-mentioned accompanying drawing 1, dynamic load exciting device, lower half bearing body, cylinder back-up block structure similar; Difference is that afterburning watt 1 is fixing watt; Under moment loading, can not prop up spot wobble for afterburning watt 1, therefore be called the fixing quiet dynamic exciting device of watt transverse bearing around cylinder back-up block 4 face of cylinder push rods.This fixing quiet dynamic exciting device of watt transverse bearing can be used in the loading exciting of fixedly pad bearing test that circular journal bearing, elliptic bearing, dislocation circle or elliptic bearing, three lobe bearing, ladder bearing and some have complicated molded lines or structure; To simplify the bearing test-bed structure and to reduce testing equipment, improve bearing rigidity damping dynamic coefficients accuracy of identification.
Claims (7)
1. the quiet dynamic exciting device of transverse bearing that constitutes by spring and piezo-activator, it is characterized in that: it is made up of static load charger, dynamic load exciting device, cylinder back-up block, and the lower half bearing body of transverse bearing is radially passed on the top of static load charger; It is inner that the dynamic load exciting device is installed on the static load charger; The cylinder back-up block is positioned at static load charger top, and contacts with the dynamic load exciting device; The cylinder back-up block equally radially passes the lower half bearing body of transverse bearing; The cylinder back-up block supports the reinforcing watt in the transverse bearing under the effect of static load charger and dynamic load exciting device.
2. device according to claim 1; It is characterized in that: the static load charger comprises that static load screw, static load only revolve bearing, static load and only revolve bearing dish, static load disk spring and only revolve key, makes its compression static load disk spring change static loading force through regulating the static load load screw.
3. device according to claim 1 and 2; It is characterized in that: the dynamic load charger comprises that dynamic load screw, dynamic load only revolve bearing, dynamic load and only revolve bearing dish, piezo-activator, dynamic load disk spring, dynamic load disk spring groove and feather key; The initial compression amount of dynamic load screw adjustable piezoelectric actuator produces distortion compression dynamic load disk spring through piezo-activator and produces the corresponding dynamic exciting force under the control signal effect.
4. device according to claim 3 is characterized in that: the composite rigidity of static load disk spring, dynamic load butterfly spring and piezo-activator needs less than 5% of bearing film rigidity.
5. device according to claim 2 is characterized in that: the maximum static lotus that the static load charger can apply is 200KN.
6. device according to claim 3 is characterized in that: test bearing is applied dynamic exciting: comprise string wave excitation, step exciting, pulse excitation, exciting, pseudorandom exciting etc. at random, the maximal value of exciting force is more than or equal to 2000N.
7. device according to claim 1 is characterized in that: afterburning watt tile fragment type can be can incline watt, the tile fragment of fixing watt or other form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007817.2A CN102589882B (en) | 2012-01-11 | 2012-01-11 | Radial bearing static and dynamic excitation device consisting of spring and piezoelectric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007817.2A CN102589882B (en) | 2012-01-11 | 2012-01-11 | Radial bearing static and dynamic excitation device consisting of spring and piezoelectric actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102589882A true CN102589882A (en) | 2012-07-18 |
| CN102589882B CN102589882B (en) | 2014-04-23 |
Family
ID=46478829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210007817.2A Expired - Fee Related CN102589882B (en) | 2012-01-11 | 2012-01-11 | Radial bearing static and dynamic excitation device consisting of spring and piezoelectric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102589882B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809488A (en) * | 2012-08-09 | 2012-12-05 | 浙江传媒学院 | Loading mechanism of mute life testing machine of rolling bearing |
| CN103543012A (en) * | 2013-10-14 | 2014-01-29 | 西安交通大学 | Rolling bearing stiffness testing experiment device and experiment method thereof |
| CN104568443A (en) * | 2015-01-27 | 2015-04-29 | 四川大学 | Space rolling bearing comprehensive performance experiment device |
| CN105352730A (en) * | 2015-12-14 | 2016-02-24 | 上海联合滚动轴承有限公司 | Bearing testing machine |
| CN106015314A (en) * | 2016-07-28 | 2016-10-12 | 西安交通大学 | Rigidity adjustable radial sliding bearing with spring of tile block supporting point |
| CN110132553A (en) * | 2019-03-25 | 2019-08-16 | 沈阳透平机械股份有限公司 | The determination method, apparatus and computer equipment of tilting-pad bearing watt support stiffness |
| CN110549165A (en) * | 2018-06-01 | 2019-12-10 | 乔治费歇尔加工方案公司 | system and method for determining structural characteristics of a machine tool |
| CN110567718A (en) * | 2019-08-29 | 2019-12-13 | 西安理工大学 | Rolling bearing radial dynamic stiffness testing device based on piezoelectric actuator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3411807B2 (en) * | 1997-12-19 | 2003-06-03 | 株式会社三協精機製作所 | Life testing device and testing method for hydrodynamic bearing device |
| CN101865772A (en) * | 2010-06-03 | 2010-10-20 | 西安交通大学 | Test device for testing performance of compliant foil gas journal bearing |
-
2012
- 2012-01-11 CN CN201210007817.2A patent/CN102589882B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3411807B2 (en) * | 1997-12-19 | 2003-06-03 | 株式会社三協精機製作所 | Life testing device and testing method for hydrodynamic bearing device |
| CN101865772A (en) * | 2010-06-03 | 2010-10-20 | 西安交通大学 | Test device for testing performance of compliant foil gas journal bearing |
Non-Patent Citations (2)
| Title |
|---|
| 姜歌东 等: "一种基于CAT的滑动轴承特性测试方法", 《润滑与密封》 * |
| 姜歌东 等: "全尺寸径向滑动轴承试验台上轴承油膜参数识别", 《润滑与密封》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809488A (en) * | 2012-08-09 | 2012-12-05 | 浙江传媒学院 | Loading mechanism of mute life testing machine of rolling bearing |
| CN103543012A (en) * | 2013-10-14 | 2014-01-29 | 西安交通大学 | Rolling bearing stiffness testing experiment device and experiment method thereof |
| CN103543012B (en) * | 2013-10-14 | 2015-10-28 | 西安交通大学 | A kind of rolling bearing rigidity test experimental provision and experimental technique thereof |
| CN104568443A (en) * | 2015-01-27 | 2015-04-29 | 四川大学 | Space rolling bearing comprehensive performance experiment device |
| CN104568443B (en) * | 2015-01-27 | 2017-05-03 | 四川大学 | Space rolling bearing comprehensive performance experiment device |
| CN105352730A (en) * | 2015-12-14 | 2016-02-24 | 上海联合滚动轴承有限公司 | Bearing testing machine |
| CN106015314A (en) * | 2016-07-28 | 2016-10-12 | 西安交通大学 | Rigidity adjustable radial sliding bearing with spring of tile block supporting point |
| CN106015314B (en) * | 2016-07-28 | 2019-04-12 | 西安交通大学 | A kind of stiffness-adjustable bush(ing) bearing of the tile fragment fulcrum with spring |
| CN110549165A (en) * | 2018-06-01 | 2019-12-10 | 乔治费歇尔加工方案公司 | system and method for determining structural characteristics of a machine tool |
| CN110132553A (en) * | 2019-03-25 | 2019-08-16 | 沈阳透平机械股份有限公司 | The determination method, apparatus and computer equipment of tilting-pad bearing watt support stiffness |
| CN110132553B (en) * | 2019-03-25 | 2020-12-29 | 沈阳透平机械股份有限公司 | Method and device for determining support rigidity of tilting pad bearing bush and computer equipment |
| CN110567718A (en) * | 2019-08-29 | 2019-12-13 | 西安理工大学 | Rolling bearing radial dynamic stiffness testing device based on piezoelectric actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102589882B (en) | 2014-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102589882B (en) | Radial bearing static and dynamic excitation device consisting of spring and piezoelectric actuator | |
| CN109519346B (en) | Thrust bearing for a wind turbine | |
| CN103698118B (en) | A kind of rotary micro radial displacement loading fatigue test equipment | |
| GB2546190A (en) | Aircraft engine rotor-stator assembly and five degrees of freedom adjustment and positioning measurement method and device | |
| Hwang et al. | Development of automatic variable preload device for spindle bearing by using centrifugal force | |
| CN204128889U (en) | A kind of beam bending experiment loading unit | |
| CN201421396Y (en) | Rolling bearing testing device | |
| CN113218659B (en) | Rolling mill bearing fault diagnosis and life evaluation simulation test bed | |
| CN109855870A (en) | A kind of bearing test device | |
| JP6571669B2 (en) | Improved roller bearing with enhanced stress bearing capacity | |
| CN206862649U (en) | Balanced suspension for heavy-duty vehicle axle rubber bushing Combined Loading endurancing mechanism | |
| CN111337172B (en) | Bearing internal load distribution calibration structure and detection method | |
| JP2013181960A (en) | Bearing testing device and method for controlling bearing testing device | |
| CN110399628A (en) | Consider that the level pressure that vibration influences pre-tightens angular contact bearing rigidity data calibration method | |
| CN113405791A (en) | Fatigue test device for elastic support of aero-engine | |
| CN108593204B (en) | Dynamic balance precision improving device and method for ultra-precise spindle | |
| CN112016170A (en) | Wind power main shaft bearing design calculation and model selection method and device | |
| CN110529493A (en) | It is a kind of to carry thrust bearing | |
| CN107606052A (en) | Vibration damping support device | |
| CN205479200U (en) | Cam constant force mechanism | |
| CN103292996B (en) | Utilize the installation method of the tapering bearing of tapering bearing test tool | |
| CN109900402A (en) | A kind of bearing frictional torque measurement tooling | |
| CN207540749U (en) | Rigidity of fixation simulator | |
| CN107764470B (en) | Lever type mechanical standard machine | |
| CN202433153U (en) | Static balance testing device for rotor of bulb tubular turbine generator unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20170111 |