CN203502187U - High-damping vibration test fixture for engineering - Google Patents
High-damping vibration test fixture for engineering Download PDFInfo
- Publication number
- CN203502187U CN203502187U CN201320604396.1U CN201320604396U CN203502187U CN 203502187 U CN203502187 U CN 203502187U CN 201320604396 U CN201320604396 U CN 201320604396U CN 203502187 U CN203502187 U CN 203502187U
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- CN
- China
- Prior art keywords
- fixture
- web joint
- connecting plate
- vibration test
- damping
- 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.)
- Expired - Fee Related
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Abstract
An object of the utility model is to provide a high-damping vibration test fixture for engineering. The fixture is characterized in that: the fixture comprises a first connecting plate and a second connecting plate, the second connecting plate is fixed to the first connecting plate through a reinforcing rib, the first connecting plate and the second connecting plate are respectively provided with bolt holes, and surfaces of the first connecting plate, the second connecting plate and the reinforcing rib except for positions of the bolt holes are coated with free damping layers. The surfaces of the fixture are coated with the damping layers, so that the damping ratio of the fixture is increased, and a transmission characteristic of the fixture can be effectively improved.
Description
Technical field
The utility model relates to a kind of fixture, specifically vibration test fixture.
Background technology
In vibration environment test, fixture transmits medium as the link between shaking table and equipment under test and energy, and its dynamics directly affects the confidence level of vibration test, so the designing technique of fixture is also one of gordian technique of vibration environment test.
Due to the singularity of vibration test fixture, ideally, wish that it does not resonate in frequency range in test, with can be by the vibration signal of the shaking table distortionless test specimen that passes to completely.The large-scale jig required to main equipment, this condition is difficult to reach sometimes, and this just requires fixture enough little at test frequency range internal resonance peak, in order to avoid affect the control accuracy of shaking table, avoids feedback open loop.The span of having stipulated the quality factor of vibration tong in U.S. < < Boeing technical conditions > >, requires vibration tong to have enough large damping.Due to comprehensive standard of domestic shortage vibration test fixture aspect, at present a lot of research institutions all carry out vibration test fixture design with reference to this standard.Traditional vibration test fixture is used the material welding such as steel, aluminium alloy or casting to form conventionally, and the damping ratio of similar structures is conventionally not high.
Summary of the invention
The purpose of this utility model is to provide a kind of engineering high damping vibration test fixture that can overcome the shortcoming that conventional brace damping ratio is little.
The purpose of this utility model is achieved in that
A kind of engineering of the utility model high damping vibration test fixture, it is characterized in that: comprise the first web joint, the second web joint, the second web joint is fixed on the first web joint by stiffening rib, on the first web joint and the second web joint, have bolt hole, the position except bolt hole on the surface of the first web joint, the second web joint, stiffening rib all applies free damping layer.
Advantage of the present utility model is: chucking surface has applied one deck damping layer, thereby has increased the damping ratio of fixture, can effectively improve the transmission characteristic of fixture.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, for example the utility model is described in more detail:
In conjunction with Fig. 1, the utility model is mainly comprised of four parts, comprises web joint 1, web joint 2, stiffening rib 3 and free damping layer 4; Wherein on web joint 1, have bolt hole 5, for jockey and shaking table platen; Welding between web joint 1 and web joint 2 and stiffening rib 3; Free damping layer 4 is evenly coated on the non-installed surface of whole vibration tong; On web joint 2, have bolt hole 6, for equipment under test is installed.The utility model applies free damping layer on non-installed surface, thereby fixture damping is improved greatly, has effectively improved the transmission characteristic of fixture.
Claims (1)
1. an engineering high damping vibration test fixture, it is characterized in that: comprise the first web joint, the second web joint, the second web joint is fixed on the first web joint by stiffening rib, on the first web joint and the second web joint, have bolt hole, the position except bolt hole on the surface of the first web joint, the second web joint, stiffening rib all applies free damping layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604396.1U CN203502187U (en) | 2013-09-29 | 2013-09-29 | High-damping vibration test fixture for engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604396.1U CN203502187U (en) | 2013-09-29 | 2013-09-29 | High-damping vibration test fixture for engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203502187U true CN203502187U (en) | 2014-03-26 |
Family
ID=50333158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320604396.1U Expired - Fee Related CN203502187U (en) | 2013-09-29 | 2013-09-29 | High-damping vibration test fixture for engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203502187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987800A (en) * | 2015-02-03 | 2016-10-05 | 南车株洲电力机车研究所有限公司 | Vibration test fixture and installation method thereof |
| CN109001034A (en) * | 2018-08-10 | 2018-12-14 | 同济大学 | A kind of test method damped after Damage for Brittle Material |
-
2013
- 2013-09-29 CN CN201320604396.1U patent/CN203502187U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987800A (en) * | 2015-02-03 | 2016-10-05 | 南车株洲电力机车研究所有限公司 | Vibration test fixture and installation method thereof |
| CN105987800B (en) * | 2015-02-03 | 2018-09-07 | 南车株洲电力机车研究所有限公司 | A kind of vibration test fixture and its installation method |
| CN109001034A (en) * | 2018-08-10 | 2018-12-14 | 同济大学 | A kind of test method damped after Damage for Brittle Material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20160929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |