CN105136416A - Low-frequency vibration isolation test stand for micro-vibration tests - Google Patents
Low-frequency vibration isolation test stand for micro-vibration tests Download PDFInfo
- Publication number
- CN105136416A CN105136416A CN201410248334.0A CN201410248334A CN105136416A CN 105136416 A CN105136416 A CN 105136416A CN 201410248334 A CN201410248334 A CN 201410248334A CN 105136416 A CN105136416 A CN 105136416A
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- CN
- China
- Prior art keywords
- vibration isolation
- frequency vibration
- ball float
- low frequency
- micro
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 67
- 238000002955 isolation Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000000694 effects Effects 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
- 239000000155 melt Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 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 low-frequency vibration isolation test stand for micro-vibration tests. The low-frequency vibration isolation test stand for micro-vibration tests comprises a ground pit filled with water, a waterborne oil film, a floating ball immersed in the water, a counterweight arranged at the bottom portion of the ground pit, and a test stand table, wherein the bottom portion of the floating ball is provided with a hole, the counterweight is tied at the bottom portion of the floating ball through a fine rope, the test stand table is supported by the floating ball through at least three hollow supporting rods, the hollow supporting rods are communicated with the floating ball, side walls of the hollow supporting rods are provided with small holes, and the small holes are connected with an external air source through soft inflation pipes. The low-frequency vibration isolation test stand realizes low-frequency vibration isolation under the condition of small change.
Description
Technical field
The present invention relates to mechanical field, particularly a kind of low frequency vibration isolation testing table carrying out micro-vibration test.
Background technology
At present, in order to the requirement of the precision to spacecraft, need to carry out the micro-vibration test in ground.Relative to traditional vibration test, because the test signal magnitude of micro-vibration test is extremely low, need to measure micro-vibration signal under super quiet environment, need the pulsation of isolation the earth.But according to vibration isolation principle, the frequency of isolation is lower, the quiet deflection that gravity causes is larger, traditional " supporting methods ", " suspension method " etc. limit by material, be difficult to realize large deformation and vibration isolation efficiency be difficult to ensure, the operating difficulties such as unconventional " high quiet low dynamic ", " air supporting vibration isolation " and be difficult to realize, all has safety issue simultaneously.
Summary of the invention
The problem that the present invention solves lacks one in prior art to be applicable to spacecraft, for carrying out the testing table of micro-vibration test, for solving described problem, the invention provides a kind of low frequency vibration isolation testing table carrying out micro-vibration test.
Low frequency vibration isolation testing table for carrying out micro-vibration test provided by the invention, comprising: melt pit, in described melt pit, water is housed; Be immersed in the ball float in water, described ball float bottom opening; Be positioned at the counterweight bottom melt pit, described counterweight ties up to bottom ball float by cord; Test table top, described ball float supports described test table top by least three hollow support rails; Described hollow support rails communicates with ball float, and hollow support rails sidewall has aperture, and described aperture is connected by inflated hose with external air source.
Further, sponge is posted in described melt pit inwall and bottom.
Further, described melt pit surrounding ground is provided with shock-absorbing spring.
Further, described ball float and counterweight form assembly, and the barycenter of described assembly is lower than the application point of buoyancy described in assembly.
Further, the described water surface is coated with oil film.
Further, hollow support rails and inflated hose junction are provided with valve, after having inflated, and valve-off.
Accompanying drawing explanation
Fig. 1 is the structural representation carrying out the low frequency vibration isolation testing table of micro-vibration test that the embodiment of the present invention provides.
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 table for carrying out micro-vibration test provided by the invention, comprising: melt pit 14, and described melt pit 14 li is equipped with water; Be immersed in the ball float 16 in water, described ball float 16 bottom opening; Be positioned at the counterweight 17 bottom melt pit 14, described counterweight 17 ties up to bottom ball float 16 by cord; Test table top 11, described ball float 16 supports described test table top 11 by least three hollow support rails; Described hollow support rails communicates with ball float 16, and hollow support rails sidewall has aperture, and described aperture is connected by inflated hose 12 with external air source.
Without test time, be full of water in ball float 16, whole test table top 11 pass through ground supports.When testing, first test products is fixed on test table top, then the valve installed of hollow support rails and inflated hose junction, is imported to ball float in by air by hollow support rails by air hose, is arranged by the water in ball float by the aperture bottom ball float; Produce " available buoyancy ".Along with the continuous injection of air, finally floated by testing table (comprising test products) by the buoyancy of ball float, wherein, ball float is still all immersed in water.Test table top and after test products floats, valve-off, withdraws inflated hose, to be tested rock and tend to be steady after, then to test.After off-test, slowly open valve, whole pilot system is slowly landed on the ground, withdraws test products, off-test.
In a preferred embodiment of the invention, shock-absorbing spring is installed on the ground around melt pit; When ball float break generation " fall from power " time, test table top drop on shock-absorbing spring, shock-absorbing spring can directly play a protective role, and prevents the direct colliding surface of testing table, the safety of protection test platform and test products.
By adjusting the weight of counterweight, the barycenter of the assembly that ball float and counterweight are formed, lower than the application point of buoyancy suffered by assembly, to ensure the autostability of whole testing table, ensure that the safety of test products;
In a preferred embodiment of the invention, one deck oil film that the melt pit water surface is annotated, the material of described oil film can select any density to be less than the oil of water, and described oil film can volatilize by anti-sealing well, and then prevents at the trial, and steam damages test products.
In a preferred embodiment of the invention, post sponge on melt pit surface, described sponge can play the effect of absorbing, reduces the pulsation be greatly delivered in water further.
The present invention utilizes buoyancy of water and shock-absorbing properties, under the prerequisite of " small deformation ", realizes low frequency vibration isolation, and the absorbing of additional sponge, ensure that low frequency vibration isolation simultaneously, adopts autostability design and protective device simultaneously, ensure that the security of test products; And can by the test products regulating the amount of the water in ball float to be applicable to various weight, scheme provided by the invention is simple to operate, very easily realizes.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection domain of technical solution of the present invention.
Claims (6)
1. carry out a low frequency vibration isolation testing table for micro-vibration test, it is characterized in that, comprising: melt pit, in described melt pit, water is housed; Oil film waterborne; Be immersed in the ball float in water, described ball float bottom opening; Be positioned at the counterweight bottom melt pit, described counterweight ties up to bottom ball float by cord; Test table top, described ball float supports described test table top by least three hollow support rails; Described hollow support rails communicates with ball float, and hollow support rails sidewall has aperture, and described aperture is connected by inflated hose with external air source.
2. according to the low frequency vibration isolation testing table carrying out micro-vibration test according to claim 1, it is characterized in that, sponge is posted in described melt pit inwall and bottom.
3. according to the low frequency vibration isolation testing table carrying out micro-vibration test according to claim 1, it is characterized in that, described melt pit surrounding ground is provided with shock-absorbing spring.
4. according to the low frequency vibration isolation testing table carrying out micro-vibration test according to claim 1, it is characterized in that, described ball float and counterweight form assembly, and the barycenter of described assembly is lower than the application point of buoyancy described in assembly.
5., according to the low frequency vibration isolation testing table carrying out micro-vibration test according to claim 1, it is characterized in that, the described water surface is coated with oil film.
6. according to the low frequency vibration isolation testing table carrying out micro-vibration test according to claim 1, it is characterized in that, hollow support rails and inflated hose junction are provided with valve, after having inflated, and valve-off.
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 true CN105136416A (en) | 2015-12-09 |
| CN105136416B CN105136416B (en) | 2018-03-16 |
Family
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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)
| Country | Link |
|---|---|
| CN (1) | CN105136416B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01275929A (en) * | 1988-04-22 | 1989-11-06 | Fujitsu Ltd | Vibration-free table |
| 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 |
-
2014
- 2014-06-06 CN CN201410248334.0A patent/CN105136416B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| JPH01275929A (en) * | 1988-04-22 | 1989-11-06 | Fujitsu Ltd | Vibration-free table |
| 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 |
|---|
| 张振华等: "高精度航天器微振动力学环境分析", 《航天器环境工程》 * |
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| Publication number | Publication date |
|---|---|
| CN105136416B (en) | 2018-03-16 |
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Granted publication date: 20180316 |