CN108918070A - A kind of vibration fatigue test device for high frequency stress blade - Google Patents
A kind of vibration fatigue test device for high frequency stress blade Download PDFInfo
- Publication number
- CN108918070A CN108918070A CN201810986301.4A CN201810986301A CN108918070A CN 108918070 A CN108918070 A CN 108918070A CN 201810986301 A CN201810986301 A CN 201810986301A CN 108918070 A CN108918070 A CN 108918070A
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- China
- Prior art keywords
- blade
- clamp body
- fatigue test
- test device
- high frequency
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of vibration fatigue test devices for high frequency high stress blade, it is arranged on vibratory equipment, including be fixed on vibratory equipment and in the amplification body of inverted u-shaped, the fixture unit put generally is set, the opening of the amplification body be arranged towards the vibratory equipment, the fixture unit include for blade described in clamping clamp body, be arranged on the clamp body and be used to adjust the balance weight assembly of the relatively described blade resonance frequency of the clamp body.The present invention has at least the following advantages：Additional additional frequency is not will increase, and the frequency that can be generated to single unit system is adjusted.
Description
Technical field
The present invention relates to fatigue test technology field more particularly to a kind of vibration fatigue tests for high frequency stress blade
Device.
Background technique
The characteristics of wide driving frequency of electric vibration table and big exciting force, allows to complete the fatigue test of most of blade.
However for high frequency high stress blade, shake table reaches full thrust rating, and blade is but not achieved in the maximum vibration stress on blade
Fatigue strength, lead to not using blade generate fatigue rupture.Such as application No. is：CN203519294U, one kind are applied to
The high acceleration generation device of vibration rig, structure use cantilever beam structure, can produce biggish acceleration, but
It is also easy to produce the asymmetry of structure in use process, system is caused to generate additional additional frequency, error shadow is caused to bulk testing
It rings.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of vibration fatigue test device for high frequency stress blade,
Additional additional frequency is not will increase, and the frequency that can be generated to single unit system is adjusted.
In order to solve the above-mentioned technical problems, the present invention provides a kind of vibration fatigue tests for high frequency high stress blade
Device is arranged on vibratory equipment, including being fixed on vibratory equipment and in the amplification body of inverted u-shaped, setting described
Fixture unit generally is put, the opening of the amplification body is arranged towards the vibratory equipment, and the fixture unit includes being used for
The clamp body of blade described in clamping is arranged on the clamp body and for adjusting the relatively described blade resonance frequency of the clamp body
The balance weight assembly of rate.
Further, it is provided with the briquetting for blade described in clamping on the clamp body, is offered on the clamp body
Accommodate the accommodation groove of the briquetting.
Further, the tongue-and-groove of the tangible cooperation blade is opened up on the briquetting.
Further, lock-screw is provided on the clamp body, the lock-screw extends in the accommodation groove simultaneously
Compress the briquetting.
Further, the balance weight assembly includes the muti-piece clump weight being detachably connected with the clamp body.
Further, the clump weight is locked on the clamp body by screw.
Further, the amplification body and clamp body are provided directly with the connecting column of both connections.
Further, the connecting column is put generally by nut check described.
By above-mentioned technical proposal, the present invention has at least the following advantages：Amplify body by setting, is generated using girder construction
Amplification, and preferably vibrational energy can be transmitted on clamp body；By being provided with clamp body, can have so that blade can
It is straight to obtain bigger exciting force, up to 25 times；By being provided with balance weight assembly, by replacing the clump weight of different quality, energy
Enough different resonant frequencies for effectively changing clamp body, and then realize and vibration fatigue test, structure are carried out to different frequency blade
Optimization.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
In the figures above：1, vibratory equipment；2, amplify body；3, clamp body；4, briquetting；5, accommodation groove；6, tongue-and-groove；7, it locks
Screw；8, clump weight；9, screw；10, connecting column；11, nut.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
In conjunction with described in Fig. 1, the invention discloses a kind of vibration fatigue test device for high frequency high stress blade, settings
On vibratory equipment 1, including being fixed on vibratory equipment 1 and in the amplification body 2 of inverted u-shaped, setting in the amplification body 2
On fixture unit.In the present invention, the opening of the amplification body 2 is arranged towards the vibratory equipment 1, amplifies body 2 by setting,
Amplification is generated using girder construction, and preferably vibrational energy can be transmitted on fixture unit.
The fixture unit include for blade described in clamping clamp body 3, be arranged on the clamp body 3 and for adjusting
The balance weight assembly of the relatively described blade resonance frequency of the whole clamp body 3.In the present invention, it is provided with and is used on the clamp body 3
The briquetting 4 of blade described in clamping offers the accommodation groove 5 for accommodating the briquetting 4 on the clamp body 3, opens up on the briquetting 4
The tongue-and-groove 6 of the tangible cooperation blade.In clamping process, the tenon portion of the blade tip is inserted into the tongue-and-groove 6.Pass through setting
Have clamp body 3, can have so that blade to can get bigger exciting force straight, up to 25 times.
In the present invention, lock-screw 7 is provided on the preferably described clamp body 3, the lock-screw 7 extends to the appearance
It sets in slot 5 and compresses the briquetting 4.By above-mentioned set-up mode, can preferably be locked to blade.
In the present invention, the balance weight assembly includes the muti-piece clump weight 8 being detachably connected with the clamp body, the counterweight
Block 8 is locked on the clamp body 3 by screw 9.By being provided with balance weight assembly, by replacing the clump weight 8 of different quality,
The different resonant frequencies of clamp body 3 can effectively be changed, and then realize and vibration fatigue test, knot are carried out to different frequency blade
Structure optimization.
In the present invention, the preferably described amplification body 2 and clamp body 3 are provided directly with the connecting column 10 for connecting the two.It is described
Connecting column 10 is locked on the amplification body 2 by nut 11.In the present invention, the preferably described connecting column 10 and the clamp body
3 are integrated setting.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (8)
1. a kind of vibration fatigue test device for high frequency high stress blade is arranged on vibratory equipment, which is characterized in that packet
It includes and is fixed on the vibratory equipment and is in the amplification body of inverted u-shaped, the fixture unit put generally, institute are set
State amplification body opening be arranged towards the vibratory equipment, the fixture unit include for blade described in clamping clamp body,
Balance weight assembly on the clamp body and for adjusting the relatively described blade resonance frequency of the clamp body is set.
2. being used for the vibration fatigue test device of high frequency high stress blade as described in claim 1, which is characterized in that the folder
It is particularly provided with the briquetting for blade described in clamping, the accommodation groove for accommodating the briquetting is offered on the clamp body.
3. being used for the vibration fatigue test device of high frequency high stress blade as claimed in claim 2, which is characterized in that the pressure
The tongue-and-groove of the tangible cooperation blade is opened up on block.
4. being used for the vibration fatigue test device of high frequency high stress blade as claimed in claim 3, which is characterized in that the folder
It is particularly provided with lock-screw, the lock-screw extends in the accommodation groove and compresses the briquetting.
5. being used for the vibration fatigue test device of high frequency high stress blade as described in claim 1, which is characterized in that described to match
Recombinating part includes the muti-piece clump weight being detachably connected with the clamp body.
6. being used for the vibration fatigue test device of high frequency high stress blade as claimed in claim 5, which is characterized in that described to match
Pouring weight is locked on the clamp body by screw.
7. being used for the vibration fatigue test device of high frequency high stress blade as described in claim 1, which is characterized in that described to put
The connecting column of both connections is substantially provided directly with clamp body.
8. being used for the vibration fatigue test device of high frequency high stress blade as claimed in claim 7, which is characterized in that the company
Column is connect to put generally by nut check described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810986301.4A CN108918070A (en) | 2018-08-28 | 2018-08-28 | A kind of vibration fatigue test device for high frequency stress blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810986301.4A CN108918070A (en) | 2018-08-28 | 2018-08-28 | A kind of vibration fatigue test device for high frequency stress blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918070A true CN108918070A (en) | 2018-11-30 |
Family
ID=64407224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810986301.4A Pending CN108918070A (en) | 2018-08-28 | 2018-08-28 | A kind of vibration fatigue test device for high frequency stress blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108918070A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231231A (en) * | 2019-06-28 | 2019-09-13 | 东北大学 | The vibration fatigue test device and its installation method of metal material axial direction varying stress ratio |
| CN111256935A (en) * | 2020-03-31 | 2020-06-09 | 中国航发动力股份有限公司 | Blade vibration test method and vibration test tool |
| CN112113731A (en) * | 2019-06-19 | 2020-12-22 | 中国航发商用航空发动机有限责任公司 | Rotor blade high-frequency vibration fatigue test fixture and design method thereof |
| CN112665809A (en) * | 2020-12-11 | 2021-04-16 | 中国航发贵阳发动机设计研究所 | Fixture and method suitable for variable natural frequency and adjustable angle of turbine blade |
| CN115855414A (en) * | 2023-02-23 | 2023-03-28 | 西安航天动力研究所 | Mechanical environment test magnitude-adjustable heterogeneous vibration system and control method thereof |
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| CN208818452U (en) * | 2018-08-28 | 2019-05-03 | 苏州长菱测试技术有限公司 | A kind of vibration fatigue test device for high frequency high stress blade |
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| JP2016121928A (en) * | 2014-12-25 | 2016-07-07 | 株式会社日立製作所 | Fatigue testing device |
| CN204719556U (en) * | 2015-06-21 | 2015-10-21 | 沈阳工程学院 | A kind of fan blade vibration detection based on MEMS sensor and control device |
| CN105414021A (en) * | 2015-12-25 | 2016-03-23 | 常州市金坛翰广科技有限公司 | Eccentric vibrating device for reciprocating mechanism |
| CN205300883U (en) * | 2016-01-13 | 2016-06-08 | 中国航空动力机械研究所 | High all fatigue test devices of aeroengine centrifugation impeller blade and fixture device thereof |
| CN105865736A (en) * | 2016-06-08 | 2016-08-17 | 中国航空动力机械研究所 | Calibration system and calibration method for blade vibration stress distribution |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113731A (en) * | 2019-06-19 | 2020-12-22 | 中国航发商用航空发动机有限责任公司 | Rotor blade high-frequency vibration fatigue test fixture and design method thereof |
| CN110231231A (en) * | 2019-06-28 | 2019-09-13 | 东北大学 | The vibration fatigue test device and its installation method of metal material axial direction varying stress ratio |
| CN110231231B (en) * | 2019-06-28 | 2021-07-09 | 东北大学 | Vibration fatigue test device for axial variable stress ratio of metal material and mounting method thereof |
| CN111256935A (en) * | 2020-03-31 | 2020-06-09 | 中国航发动力股份有限公司 | Blade vibration test method and vibration test tool |
| CN111256935B (en) * | 2020-03-31 | 2022-04-26 | 中国航发动力股份有限公司 | Blade vibration test method and vibration test tool |
| CN112665809A (en) * | 2020-12-11 | 2021-04-16 | 中国航发贵阳发动机设计研究所 | Fixture and method suitable for variable natural frequency and adjustable angle of turbine blade |
| CN115855414A (en) * | 2023-02-23 | 2023-03-28 | 西安航天动力研究所 | Mechanical environment test magnitude-adjustable heterogeneous vibration system and control method thereof |
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