CN109708892A - A kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing - Google Patents
A kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing Download PDFInfo
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- CN109708892A CN109708892A CN201910119176.1A CN201910119176A CN109708892A CN 109708892 A CN109708892 A CN 109708892A CN 201910119176 A CN201910119176 A CN 201910119176A CN 109708892 A CN109708892 A CN 109708892A
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Abstract
The invention discloses a kind of dynamic rate of foil dynamical pressure air transverse bearing and dynamic antivibration testboards, this testboard is by analyzing different static loads, different exciting forces, the displacement and load of the bearing measured under the conditions of different rotating speeds, to obtain the dynamic rate and dynamic antivibration of respective conditions lower bearing, solve the problems, such as that bearing performance testboard only measures bearing static rigidity on the market at present, improve the accuracy of rotor dynamics Theoretical Design, reduce the overall design difficulty supported by foil dynamical pressure air bearing, research and development cost and lead time are saved well.
Description
Technical field
The present invention relates to foil dynamical pressure air bearing testing fields, more particularly, to a kind of foil dynamical pressure air transverse bearing
Dynamic rate and dynamic antivibration testboard.
Background technique
A kind of air self-lubricating bearing of foil dynamical pressure air bearing, in the turbomachinery and high-speed motor of high power density
On be widely used；Foil dynamical pressure air bearing develops the perfect stage also in a technology at present, this bearing
The performance parameter predicted of theoretical model and actual parameter still have larger gap, therefore, can only by experiment measurement come
Obtain the performance parameter of bearing；The performance test of foil dynamical pressure air bearing is essentially all in static load item on the market at present
Its static rigidity is measured under part, but in actual use, the load that bearing is subject to is dynamic load, therefore, is passed through
Static rigidity carries out rotor dynamics design, and to will lead to rotor actual motion state widely different with Theoretical Design, eventually leads to turn
The failure of subsystem.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provide a kind of foil dynamical pressure air transverse bearing dynamic rate and
Dynamic antivibration testboard.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing, including experimental bench electro spindle,
Diametral tests bearing block, the static load loading device before diametral tests bearing block, position being placed on experimental bench electro spindle
Dynamic load loading device in diametral tests bearing block two sides；It is sensed on the diametral tests bearing block equipped with current vortex displacement
Device, static load loading device end are equipped with pull pressure sensor.
As a preference, the through-hole passed through for experimental bench electro spindle is equipped in the middle part of the diametral tests bearing block,
Diametral tests bearing block top is symmetrically arranged with installation recess, be provided on the periphery of diametral tests bearing block top with it is quiet
The fixation hole that state load charger, dynamic load loading device cooperate.
As a preference, equipped with the mounting rack being connect with eddy current displacement sensor on the installation recess.
As a preference, the static load loading device includes connecting rope, and the connecting rope bypasses pulley bracket
One end is connect with load counterweight afterwards, the other end and pull pressure sensor connect, and the pull pressure sensor is fixed in fixation hole.
As a preference, the dynamic load loading device includes electromagnetic exciter, exciter support, the electromagnetism
Vibration excitor connects by the way that exciter support is oblique loaded on experiment bearing block two sides, the electromagnetic exciter end and pull pressure sensor
It connects, the pull pressure sensor is fixed in fixation hole.
The beneficial effects of the present invention are: this testboard is by analyzing different static loads, different exciting forces, different rotating speeds item
The displacement and load of the bearing measured under part solve to obtain the dynamic rate and dynamic antivibration of respective conditions lower bearing
It has determined current the problem of bearing performance testboard only measures bearing static rigidity on the market, has improved rotor dynamics Theoretical Design
Accuracy reduces the overall design difficulty supported by foil dynamical pressure air bearing, saves research and development cost and development well
Period.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is stereoscopic schematic diagram of the invention；
Fig. 2 is static load loading device schematic diagram of the invention；
Fig. 3 is diametral tests bearing block schematic diagram of the invention.
Specific embodiment
- Fig. 3 referring to Fig.1, a kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing, including reality
Test platform electro spindle 1, the diametral tests bearing block 2 that is placed on experimental bench electro spindle 1, the static state before diametral tests bearing block 2
Load charger 3, the dynamic load loading device 4 positioned at 2 two sides of diametral tests bearing block, experimental bench electro spindle 1 pass through quiet
Pressure air bearing, which supports and passes through threephase asynchronous machine, directly to be driven, and threephase asynchronous machine has running accuracy high, and stability is strong
The characteristics of, greatly reduction shaft itself operates the influence to bearing performance parameter measurement；Equipped with electricity on diametral tests bearing block 2
Eddy displacement sensor 5,3 end of static load loading device are equipped with pull pressure sensor 6.
The through-hole 21 passed through for experimental bench electro spindle 1, diametral tests bearing are equipped in the middle part of above-mentioned diametral tests bearing block 2
2 tops of seat are symmetrically arranged with installation recess 22, be provided on 2 top periphery of diametral tests bearing block with static load loading device 3,
The fixation hole 23 that dynamic load loading device 4 cooperates, diametral tests bearing block 2 include the top foil and wave foil of measurement performance in need
Structure, top are equipped with mounting frame for sensor, guarantee the distribution rationality and installation accuracy of sensor；It is filled on installation recess 22
There is the mounting rack 24 connecting with eddy current displacement sensor 5；Static load loading device 3 include connecting rope 31, connecting rope 31 around
Cross after pulley bracket 32 that one end connect with load counterweight 33, the other end and pull pressure sensor 6 connect, pull pressure sensor 6 is consolidated
Due in fixation hole 23；Dynamic load loading device 4 includes electromagnetic exciter 41, exciter support 42, and electromagnetic exciter 41 is logical
It is oblique loaded on experiment 2 two sides of bearing block to cross exciter support 42,41 end of electromagnetic exciter is connect with pull pressure sensor 6, institute
Pull pressure sensor 6 is stated to be fixed in fixation hole 23.
In actual test, steps are as follows:
(1) experimental bench electro spindle 1, static load loading device 3, dynamic load loading device 4 are mounted on cast iron platform
On, diametral tests bearing block 2 is set on experimental bench electro spindle 1, by dynamic load loading device 4 and diametral tests bearing block
2 sets of connections；
(2) installation eddy current displacement sensor 5 is put on to diametral tests bearing block 2, pull pressure sensor 6 is connected to quiet
In connecting rope 31 in state load charger 3, and pull pressure sensor 6 is put on loaded on diametral tests bearing block 2；And it needs
Power supply line and signal wire connect with eddy current displacement sensor 5, pull pressure sensor 6；
(3) weight of control load counterweight 33, controls the exciting force of electromagnetic exciter 41, experiment is controlled by frequency converter
The revolving speed of platform electro spindle 1 is measured under different static load conditions, different exciting forces, different rotating speeds lower bearing displacement and
Load；
(4) displacement and load obtained using Four i er transform analysis measurement, so that different static loads can be obtained
Under the conditions of, the dynamic rate and dynamic antivibration of different exciting forces, different rotating speeds lower rotary shaft.
According to above-mentioned principle, the present invention can also be made appropriate changes and modifications to the above embodiments.Therefore, this hair
It is bright to be not limited to specific embodiment disclosed and described above, some modifications and changes of the invention should also be as to fall into this
In the scope of protection of the claims of invention.
Claims (5)
1. the dynamic rate and dynamic antivibration testboard of a kind of foil dynamical pressure air transverse bearing, which is characterized in that including experiment
Platform electro spindle (1), the diametral tests bearing block (2) being placed on experimental bench electro spindle (1), be located at diametral tests bearing block (2) before
Static load loading device (3), be located at diametral tests bearing block (2) two sides dynamic load loading device (4)；The radial direction
It tests and eddy current displacement sensor (5) is housed on bearing block (2), static load loading device (3) end is sensed equipped with pressure
Device (6).
2. the dynamic rate and dynamic antivibration testboard of a kind of foil dynamical pressure air transverse bearing according to claim 1,
It is characterized in that, being equipped with the through-hole (21) passed through for experimental bench electro spindle (1), institute in the middle part of the diametral tests bearing block (2)
It states diametral tests bearing block (2) top and is symmetrically arranged with installation recess (22), on the periphery of diametral tests bearing block (2) top
It is provided with the fixation hole (23) with static load loading device (3), dynamic load loading device (4) cooperation.
3. the dynamic rate and dynamic antivibration testboard of a kind of foil dynamical pressure air transverse bearing according to claim 2,
It is characterized in that, equipped with the mounting rack (24) being connect with eddy current displacement sensor (5) on installation recess (22).
4. the dynamic rate and dynamic antivibration of a kind of foil dynamical pressure air transverse bearing according to claim 1 or 2 are tested
Platform, which is characterized in that the static load loading device (3) includes connecting rope (31), and the connecting rope (31) bypasses pulley branch
One end is connect frame (32) with load counterweight (33) afterwards, the other end and pull pressure sensor (6) connect, the pull pressure sensor
(6) it is fixed in fixation hole (23).
5. the dynamic rate and dynamic antivibration of a kind of foil dynamical pressure air transverse bearing according to claim 1 or 2 are tested
Platform, which is characterized in that the dynamic load loading device (4) includes electromagnetic exciter (41), exciter support (42), the electricity
Magnet exciter (41) is oblique loaded on experiment bearing block (2) two sides, electromagnetic exciter (41) end by exciter support (42)
End is connect with pull pressure sensor (6), and the pull pressure sensor (6) is fixed in fixation hole (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910119176.1A CN109708892A (en) | 2019-02-18 | 2019-02-18 | A kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910119176.1A CN109708892A (en) | 2019-02-18 | 2019-02-18 | A kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109708892A true CN109708892A (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910119176.1A Pending CN109708892A (en) | 2019-02-18 | 2019-02-18 | A kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525508A (en) * | 2020-11-24 | 2021-03-19 | 北京航空航天大学 | Quasi-static radial rigidity testing device and method for circular metal rubber damper |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN205175693U (en) * | 2015-11-10 | 2016-04-20 | 上海电气凯士比核电泵阀有限公司 | A sound load loading device for test of bearing dynamic characteristics |
| CN209589477U (en) * | 2019-02-18 | 2019-11-05 | 佛山特博科技有限公司 | A kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing |
-
2019
- 2019-02-18 CN CN201910119176.1A patent/CN109708892A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN205175693U (en) * | 2015-11-10 | 2016-04-20 | 上海电气凯士比核电泵阀有限公司 | A sound load loading device for test of bearing dynamic characteristics |
| CN209589477U (en) * | 2019-02-18 | 2019-11-05 | 佛山特博科技有限公司 | A kind of dynamic rate and dynamic antivibration testboard of foil dynamical pressure air transverse bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525508A (en) * | 2020-11-24 | 2021-03-19 | 北京航空航天大学 | Quasi-static radial rigidity testing device and method for circular metal rubber damper |
| CN112525508B (en) * | 2020-11-24 | 2021-09-03 | 北京航空航天大学 | Quasi-static radial rigidity testing device and method for circular metal rubber damper |
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