CN105136416B - A kind of low frequency vibration isolation testing stand for carrying out micro-vibration experiment - Google Patents
A kind of low frequency vibration isolation testing stand for carrying out micro-vibration experiment Download PDFInfo
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- CN105136416B CN105136416B CN201410248334.0A CN201410248334A CN105136416B CN 105136416 B CN105136416 B CN 105136416B CN 201410248334 A CN201410248334 A CN 201410248334A CN 105136416 B CN105136416 B CN 105136416B
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- Prior art keywords
- ball float
- low frequency
- testing stand
- vibration isolation
- out micro
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000002474 experimental method Methods 0.000 title claims abstract description 26
- 238000002955 isolation Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000155 melt Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of low frequency vibration isolation testing stand for carrying out micro-vibration experiment, including：Melt pit, water is housed in the melt pit；Oil film waterborne；Ball float submerged in water, the ball float bottom opening；Counterweight positioned at melt pit bottom, the counterweight tie up to ball float bottom by cord；Table top is tested, the ball float supports the experiment table top by least three hollow support rails；The hollow support rails are communicated with ball float, and hollow support rails side wall is provided with aperture, and the aperture is connected with external air source by inflated hose.The present invention realizes low frequency vibration isolation on the premise of " small deformation ".
Description
Technical field
The present invention relates to mechanical field, more particularly to a kind of low frequency vibration isolation testing stand for carrying out micro-vibration experiment.
Background technology
At present, in order to the precision to spacecraft requirement, it is necessary to carry out ground micro-vibration experiment.Relative to traditional vibration
Experiment, due to micro-vibration experiment stimulus magnitude it is extremely low, it is necessary under super quiet environment measure micro-vibration signal, it is necessary to every
From the pulsation of the earth.But according to vibration isolation principle, the frequency of isolation is lower, and the quiet deflection caused by gravity is bigger, traditional
" supporting methods ", " suspension method " etc. are limited by material, it is difficult to and realize large deformation and vibration isolation efficiency is difficult to ensure that, unconventional " Gao Jing
It is low dynamic ", the operating difficulties such as " air supporting vibration isolation " and be difficult to, while be respectively provided with safety issue.
The content of the invention
The present invention solves the problems, such as it is to lack one kind in the prior art to be applied to spacecraft, for carrying out micro-vibration experiment
Testing stand, to solve described problem, the present invention provides a kind of low frequency vibration isolation testing stand for carrying out micro-vibration experiment.
Low frequency vibration isolation testing stand provided by the present invention for carrying out micro-vibration experiment, including：Melt pit, fill in the melt pit
There is water；Ball float submerged in water, the ball float bottom opening；Counterweight positioned at melt pit bottom, the counterweight pass through thin
Rope ties up to ball float bottom；Table top is tested, the ball float supports the experiment table top by least three hollow support rails；The sky
Heart support bar is communicated with ball float, and hollow support rails side wall is provided with aperture, and the aperture is connected with external air source by inflated hose.
Further, sponge is posted in described melt pit inwall and bottom.
Further, the melt pit surrounding ground is provided with shock-absorbing spring.
Further, the ball float forms assembly with counterweight, and the barycenter of the assembly is less than buoyancy described in assembly
Application point.
Further, covered with oil film on the water surface.
Further, hollow support rails are provided with valve with inflated hose junction, after the completion of inflation, close valve.
Brief description of the drawings
Fig. 1 is the structural representation of the low frequency vibration isolation testing stand of progress micro-vibration experiment provided in an embodiment of the present invention.
Embodiment
Hereinafter, the present invention is further elaborated in conjunction with the accompanying drawings and embodiments.
As shown in figure 1, the low frequency vibration isolation testing stand provided by the present invention for carrying out micro-vibration experiment, including：Melt pit 14,
Water is housed in the melt pit 14；Ball float 16 submerged in water, the bottom opening of ball float 16；Counterweight positioned at the bottom of melt pit 14
Part 17, the counterweight 17 tie up to the bottom of ball float 16 by cord；Table top 11 is tested, the ball float 16 is hollow by least three
Table top 11 is tested described in they sup-port；The hollow support rails communicate with ball float 16, and hollow support rails side wall is provided with aperture, institute
Aperture is stated to be connected by inflated hose 12 with external air source.
When without experiment, water is full of in ball float 16, whole experiment table top 11 passes through ground supports.It is first when being tested
First test products are fixed on experiment table top, then hollow support rails and the valve of inflated hose junction installation, pass through sky
Air is imported into ball float by gas flexible pipe by hollow support rails, and the water in ball float is arranged by the aperture of ball float bottom；Production
Raw " available buoyancy ".With the continuous injection of air, finally by the buoyancy of ball float by testing stand（Including test products）Float, its
In, ball float is still fully immersed in water.After experiment table top and test products float, valve is closed, inflated hose is withdrawn, waits to try
Test after platform rocks and tend to be steady, then tested.After off-test, valve is slowly opened, whole pilot system is slowly landed
On the ground, test products, off-test are withdrawn.
In a preferred embodiment of the invention, shock-absorbing spring is installed on the ground around melt pit；Occur when ball float ruptures
When " falling from power ", experiment table top falls on shock-absorbing spring, and shock-absorbing spring can directly play a protective role, and prevent testing stand from directly hitting
Hit the safety on ground, protection test platform and test products.
By the weight for adjusting counterweight so that the barycenter for the assembly that ball float and counterweight are formed is less than suffered by assembly
The application point of buoyancy, to ensure the autostability of whole testing stand, it ensure that the safety of test products；
In a preferred embodiment of the invention, one layer of oil film is filled on the melt pit water surface, the material of the oil film can select
The oil that any density is less than water is selected, the oil film can prevent water from volatilizing well, and then prevent at the trial, and steam is to experiment
Product damages.
In a preferred embodiment of the invention, sponge is posted on melt pit surface, the sponge can play a part of absorbing,
Further reduce the pulsation that the earth is delivered in water.
The present invention utilizes the buoyancy and shock-absorbing properties of water, on the premise of " small deformation ", realizes low frequency vibration isolation, adds simultaneously
The absorbing of sponge, it is ensured that low frequency vibration isolation, while using autostability design and protection device, it is ensured that the safety of test products
Property；And the test products of various weight can be applied to by adjusting the amount of the water in ball float, scheme behaviour provided by the invention
Make simply, easily to realize.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical scheme makes possible variation and modification, therefore, every content without departing from technical solution of the present invention, according to the present invention
Any simple modifications, equivalents, and modifications made to above example of technical spirit, belong to technical solution of the present invention
Protection domain.
Claims (6)
- A kind of 1. low frequency vibration isolation testing stand for carrying out micro-vibration experiment, it is characterised in that including：Melt pit, it is equipped with the melt pit Water；Oil film waterborne；Ball float submerged in water, the ball float bottom opening；Counterweight positioned at melt pit bottom, the counterweight Part ties up to ball float bottom by cord；Table top is tested, the ball float supports the testing stand by least three hollow support rails Face；The hollow support rails communicate with ball float, and hollow support rails side wall is provided with aperture, and the aperture passes through inflation with external air source Flexible pipe connects.
- 2. the low frequency vibration isolation testing stand according to the carry out micro-vibration experiment described in claim 1, it is characterised in that described melt pit Sponge is posted in inwall and bottom.
- 3. the low frequency vibration isolation testing stand according to the carry out micro-vibration experiment described in claim 1, it is characterised in that the melt pit four All ground is provided with shock-absorbing spring.
- 4. the low frequency vibration isolation testing stand according to the carries out micro-vibration experiment described in claim 1, it is characterised in that the ball float and Counterweight forms assembly, and the barycenter of the assembly is less than the application point of assembly buoyancy.
- 5. the low frequency vibration isolation testing stand according to the carry out micro-vibration experiment described in claim 1, it is characterised in that covered on the water surface There is oil film.
- 6. the low frequency vibration isolation testing stand according to the carry out micro-vibration experiment described in claim 1, it is characterised in that hollow support rails Valve is installed with inflated hose junction, after the completion of inflation, closes valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248334.0A CN105136416B (en) | 2014-06-06 | 2014-06-06 | A kind of low frequency vibration isolation testing stand for carrying out micro-vibration experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410248334.0A CN105136416B (en) | 2014-06-06 | 2014-06-06 | A kind of low frequency vibration isolation testing stand for carrying out micro-vibration experiment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105136416A CN105136416A (en) | 2015-12-09 |
| CN105136416B true CN105136416B (en) | 2018-03-16 |
Family
ID=54721848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410248334.0A Expired - Fee Related CN105136416B (en) | 2014-06-06 | 2014-06-06 | A kind of low frequency vibration isolation testing stand for carrying out micro-vibration experiment |
Country Status (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2607209B1 (en) * | 1986-11-26 | 1990-04-27 | Vibrachoc Sa | SUSPENSION DEVICE FOR ISOLATING IMPACT SENSITIVE OR VIBRATION EQUIPMENT |
| CN1487217A (en) * | 2003-07-30 | 2004-04-07 | 上海理工大学附属工厂 | Combined pendulum type pneumatic vibration isolator |
| CN101382178A (en) * | 2008-10-16 | 2009-03-11 | 上海微电子装备有限公司 | Active vibration damping and vibration isolating device and active vibration damping and vibration isolating system |
| CN101398636A (en) * | 2008-09-17 | 2009-04-01 | 华中科技大学 | Precision vibration damping assembly and vibration damping platform composed of the assembly |
| CN202392036U (en) * | 2011-11-17 | 2012-08-22 | 东南大学 | Large-damping vertical viscoelastic vibration isolating and damping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01275929A (en) * | 1988-04-22 | 1989-11-06 | Fujitsu Ltd | Vibration-free table |
-
2014
- 2014-06-06 CN CN201410248334.0A patent/CN105136416B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2607209B1 (en) * | 1986-11-26 | 1990-04-27 | Vibrachoc Sa | SUSPENSION DEVICE FOR ISOLATING IMPACT SENSITIVE OR VIBRATION EQUIPMENT |
| CN1487217A (en) * | 2003-07-30 | 2004-04-07 | 上海理工大学附属工厂 | Combined pendulum type pneumatic vibration isolator |
| CN101398636A (en) * | 2008-09-17 | 2009-04-01 | 华中科技大学 | Precision vibration damping assembly and vibration damping platform composed of the assembly |
| CN101382178A (en) * | 2008-10-16 | 2009-03-11 | 上海微电子装备有限公司 | Active vibration damping and vibration isolating device and active vibration damping and vibration isolating system |
| CN202392036U (en) * | 2011-11-17 | 2012-08-22 | 东南大学 | Large-damping vertical viscoelastic vibration isolating and damping device |
Non-Patent Citations (1)
| Title |
|---|
| 高精度航天器微振动力学环境分析;张振华等;《航天器环境工程》;20091231;第26卷(第6期);第528-534页 * |
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| Publication number | Publication date |
|---|---|
| CN105136416A (en) | 2015-12-09 |
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Granted publication date: 20180316 |