CN103837595B - For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level - Google Patents
For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level Download PDFInfo
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- CN103837595B CN103837595B CN201210474095.1A CN201210474095A CN103837595B CN 103837595 B CN103837595 B CN 103837595B CN 201210474095 A CN201210474095 A CN 201210474095A CN 103837595 B CN103837595 B CN 103837595B
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Abstract
For testing a device and method for preventing stone hitting, splash-proof material restraint speckle level, it comprises exemplar, sample piece clamp, clamping fixture seat, steel ball, falling sphere track, rail bed, microphone; Described exemplar is for carrying tested material, and described sample piece clamp clamps exemplar edge, and is arranged on clamping fixture seat, and exemplar and horizontal plane are arranged; Described falling sphere track installation is in rail bed, and falling sphere race orthogonal is arranged in ground, lower central area of rectifying exemplar; Described steel ball is used for freely falling along falling sphere track, impact exemplar center; Does is described microphone arranged on steel ball impact place dead ahead and side horizontal direction, and is connected to Head? DIC6B gathers front end (or other Noise Acquisition front ends), for acquisition noise data.Test is carried out in whole elimination room or semianechoic room, is freely fallen by the steel ball of approrpiate wts, impact in exemplar center along falling sphere track, simultaneously acquisition noise data.This apparatus structure is simple, assembling easily, good stability, little to exemplar interference, adopt this method to be convenient to adopting the exemplar of different preventing stone hitting, splash-proof material and different arrangement to carry out noise testing.<!--1-->
Description
Technical field
The present invention relates to the automobile noise control field, be specifically related to the technology of testing preventing stone hitting, splash-proof material restraint speckle level.
Background technology
Along with the development of Hyundai Motor technology, vibration noise performance one of important performance indexes becoming automobile of automobile.The rubble that doughnut tread is rolled knocks noise that lower body produces and tire and dabbles and have a strong impact on passenger's comfortableness to the impact noise of lower body, preventing stone hitting, splash-proof material (as PVC coating, the damping glue etc.) application on vehicle body can cushion rubble and current to the impact of lower body, effectively reduce stone and hit sound and splash.But in the design process of car load, due to large in vehicle body enterprising line correlation test difficulty, disturbing factor is many, different preventing stone hitting, splash-proof material and the different arrangements of evaluation being difficult to quantize is to the suppression level of noise.
Summary of the invention
Technical matters to be solved by this invention is to provide the device and method of a kind of rational test preventing stone hitting, splash-proof material restraint speckle level.
For solving the problems of the technologies described above, the present invention takes following technical scheme;
For testing a device for preventing stone hitting, splash-proof material restraint speckle level, it comprises exemplar, sample piece clamp, clamping fixture seat, steel ball, falling sphere track, rail bed, microphone; Described exemplar is for carrying tested material, and described sample piece clamp clamps exemplar edge, and is arranged on clamping fixture seat, and exemplar and horizontal plane are arranged; Described falling sphere track installation is in rail bed, and falling sphere race orthogonal is arranged in ground, lower central area of rectifying exemplar; Described steel ball is used for freely falling along falling sphere track, impact exemplar center; Described microphone is arranged on steel ball impact place dead ahead and side horizontal direction, and is connected to Noise Acquisition front end, as HeadDIC6B gathers front end, for acquisition noise data.
Described sample piece clamp is arranged in the chute of clamping fixture seat by the bolt of both sides, according to circumstances adjusts the height of sample piece clamp and angle.
Described exemplar and horizontal plane layout angle are at 30 ° ~ 60 °.
The mode described clamping exemplar carrying tested material is that PVC material is sprayed at exemplar front, and damping glue sticks in the exemplar back side.
Described microphone one is arranged in horizontal range 200mm place, steel ball impact place dead ahead, is highly equal to steel ball impact place, and another is arranged in horizontal range 200mm place on the left of steel ball impact place, is highly equal to steel ball impact place.
Described microphone adopts microphone, and described falling sphere track adopts hollow pvc pipe.
Further, the present invention proposes the method utilizing above device to test preventing stone hitting, splash-proof material restraint speckle level, and described test is carried out in whole elimination room or semianechoic room, and step is as follows:
(1) tested material is set on exemplar, by sample piece clamp, exemplar is fixed,
(2) sample piece clamp having clamped exemplar is secured by bolts in the chute of clamping fixture seat, and adjusts the angle of inclination on fixture and ground as required;
(3) falling sphere track is fixed in rail bed, and rectifies exemplar central area under making falling sphere track;
(4) microphone is arranged in steel ball impact place dead ahead horizontal level, is highly equal to steel ball impact place; Be arranged in horizontal level on the left of steel ball impact place through another microphone, be highly equal to steel ball impact place, microphone is by signal wire connecting test front end;
(5) steel ball choosing appropriate mass according to test material is put into from falling sphere track top, and steel ball does movement of falling object impact at exemplar center, records noise data, and carries out aftertreatment and analysis.
In described method, the set-up mode of concrete tested material is: PVC material is sprayed at exemplar front, and damping glue sticks in the exemplar back side; Described exemplar and horizontal plane layout angle are at 30 ° ~ 60 °.The position of microphone is: one is arranged in horizontal range 200mm place, steel ball impact place dead ahead, and another is arranged in horizontal range 200mm place on the left of steel ball impact place.Choosing of steel ball chooses according to test material, and quality is 2g ~ 8g.
Adopt that apparatus structure of the present invention is simple, assembling easily, good stability, little to exemplar interference, adopt this device and method to be convenient to adopting the exemplar of different preventing stone hitting, splash-proof material and different arrangement to carry out noise testing.
Accompanying drawing explanation
Fig. 1 is the structure drawing of device of test preventing stone hitting, splash-proof material restraint speckle level:
Fig. 2 is the structural representation of holder part;
Fig. 3 is the schematic diagram of exemplar;
Fig. 4 A and Fig. 4 B is microphone arrangement position view.
In figure: 1 exemplar, 2 sample piece clamp, 3 clamping fixture seats, 4 steel balls, 5 falling sphere tracks, 6 track supports, 7 rail bed; 8 first microphones, 9 second microphones.
Embodiment
Below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 A and Fig. 4 B, the invention process is described in detail.
When carrying out preventing stone hitting, the horizontal checkout of splash-proof material noise, carry out in semianechoic room or whole elimination room.
First exemplar 1(PVC material spraying is clamped in exemplar front by sample piece clamp 2, damping glue sticks in the exemplar back side), the uniform spacing of sample piece clamp 2 surrounding is the dormant bolt hole (bolt hole spacing 50mm is simulation body in white spot pitch) of 50mm, uses the hexagon socket head cap screw of 20 Φ 10mm to carry out exemplar and grips.
Further the sample piece clamp 2 having clamped exemplar 1 is secured by bolts in the chute in clamp base 3, and adjusts the angle of inclination on fixture and ground as required, angular setting scope 30 ° ~ 60 °.
Be fixed on track support 6 by bolt by falling sphere track 5 further, then be fixed in rail bed 7 by falling sphere track support 6, vertical ground wanted by falling sphere track 5, and moves on to position as shown in the figure, and namely falling sphere track is rectified exemplar 1 center for 5 times.
Further the first microphone 8 is arranged in horizontal range 200mm place, steel ball impact place dead ahead, guarantee steel ball 4 impact upspring on exemplar after can not damage microphone, be highly equal to steel ball impact place; Second microphone 9 is arranged in horizontal range 200mm place on the left of steel ball impact place, is highly equal to steel ball impact place (microphone is just to steel ball impact place).Connect HeadDIC6B and gather front end, for acquisition noise data.
The steel ball 4 choosing appropriate mass is further put into from falling sphere track 5 top, and steel ball 4 does movement of falling object impact at exemplar 1 center, records noise data and carries out aftertreatment and analysis.
Wherein, falling sphere track 5 adopts length to be the hollow pvc pipe of Φ 25mm of 2m, and choosing quality according to test material is 2g ~ 8g steel ball.
Claims (11)
1., for testing a device for preventing stone hitting, splash-proof material restraint speckle level, it is characterized in that, comprise exemplar, sample piece clamp, clamping fixture seat, steel ball, falling sphere track, rail bed, microphone; Described exemplar is for carrying tested material, and described sample piece clamp clamps exemplar edge, and is arranged on clamping fixture seat, and exemplar and horizontal plane are arranged; Described falling sphere track installation is in rail bed, and falling sphere race orthogonal is arranged in ground, lower central area of rectifying exemplar; Described steel ball is used for freely falling along falling sphere track, impact exemplar center; Described microphone is arranged on steel ball impact place dead ahead and side horizontal direction, and is connected to Noise Acquisition front end, for acquisition noise data.
2. the device for testing preventing stone hitting, splash-proof material restraint speckle level according to claim 1, it is characterized in that, described sample piece clamp is arranged in the chute of clamping fixture seat by the bolt of both sides, and the height of sample piece clamp and angle are adjustable.
3. the device for testing preventing stone hitting, splash-proof material restraint speckle level according to claim 2, it is characterized in that, described exemplar and horizontal plane layout angle are at 30 ° ~ 60 °.
4. the device for testing preventing stone hitting, splash-proof material restraint speckle level according to claim 1,2 or 3, it is characterized in that, the mode described clamping exemplar carrying tested material is that PVC material is sprayed at exemplar front, and damping glue sticks in the exemplar back side.
5. the device for testing preventing stone hitting, splash-proof material restraint speckle level according to claim 1,2 or 3, it is characterized in that, described microphone one is arranged in horizontal range 200mm place, steel ball impact place dead ahead, highly be equal to steel ball impact place, another is arranged in horizontal range 200mm place on the left of steel ball impact place, is highly equal to steel ball impact place.
6. the device for testing preventing stone hitting, splash-proof material restraint speckle level according to claim 5, is characterized in that, described microphone adopts microphone.
7. the device for testing preventing stone hitting, splash-proof material restraint speckle level according to claim 5, it is characterized in that, described falling sphere track adopts hollow pvc pipe.
8. utilize the method for the device to test preventing stone hitting described in claim 1,2 or 3, splash-proof material restraint speckle level, described test is carried out in whole elimination room or semianechoic room, and step is as follows:
(1) tested material is set on exemplar, by sample piece clamp, exemplar is fixed,
(2) sample piece clamp having clamped exemplar is secured by bolts in the chute of clamping fixture seat, and adjusts the angle of inclination on fixture and ground as required;
(3) falling sphere track is fixed in rail bed, and rectifies exemplar central area under making falling sphere track;
(4) microphone is arranged in steel ball impact place dead ahead horizontal level, is highly equal to steel ball impact place; Be arranged in horizontal level on the left of steel ball impact place through another microphone, be highly equal to steel ball impact place, microphone is by signal wire connecting test front end;
(5) steel ball choosing appropriate mass according to test material is put into from falling sphere track top, and steel ball does movement of falling object impact at exemplar center, records noise data, and carries out aftertreatment and analysis.
9. method according to claim 8, is characterized in that, the set-up mode of described tested material is: PVC material is sprayed at exemplar front, and damping glue sticks in the exemplar back side; Described exemplar and horizontal plane layout angle are at 30 ° ~ 60 °.
10. method according to claim 8, is characterized in that, described microphone one is arranged in horizontal range 200mm place, steel ball impact place dead ahead, and another is arranged in horizontal range 200mm place on the left of steel ball impact place.
11. methods according to claim 9, is characterized in that, choose according to test material the steel ball that quality is 2g ~ 8g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210474095.1A CN103837595B (en) | 2012-11-20 | 2012-11-20 | For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210474095.1A CN103837595B (en) | 2012-11-20 | 2012-11-20 | For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level |
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| Publication Number | Publication Date |
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| CN103837595A CN103837595A (en) | 2014-06-04 |
| CN103837595B true CN103837595B (en) | 2016-03-02 |
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| CN201210474095.1A Active CN103837595B (en) | 2012-11-20 | 2012-11-20 | For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683983A (en) * | 2018-07-09 | 2018-10-19 | 无锡吉兴汽车声学部件科技有限公司 | A kind of automobile bottom backplate impact noise test device |
| CN111208200B (en) * | 2020-02-28 | 2020-10-20 | 北京理工大学 | Ti-Al alloy liner structure consistency detection device and detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589635A (en) * | 1994-08-08 | 1996-12-31 | Aerospatiale Societe Nationale Industrielle | Automated tapping process for complex parts used for detecting shallow faults |
| EP1531330A2 (en) * | 2003-11-13 | 2005-05-18 | IST Ingenieurdienst für sichere Technik GmbH | Method and device for monitoring changes or damages of pressurised containers during or after pressure testing |
| DE102011100370A1 (en) * | 2011-05-03 | 2012-11-08 | Bundesanstalt für Wasserbau | Method for non-damaging testing of bollard, particularly of platform bollard of port or sluice system, about its damage or its anchoring strength, involves contactless measuring vibration of bollard with microphone |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012017998A (en) * | 2010-07-06 | 2012-01-26 | Shin Etsu Chem Co Ltd | Polycrystalline silicon rod, inspection method of polycrystalline silicon rod, and manufacturing method of polycrystalline silicon rod |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589635A (en) * | 1994-08-08 | 1996-12-31 | Aerospatiale Societe Nationale Industrielle | Automated tapping process for complex parts used for detecting shallow faults |
| EP1531330A2 (en) * | 2003-11-13 | 2005-05-18 | IST Ingenieurdienst für sichere Technik GmbH | Method and device for monitoring changes or damages of pressurised containers during or after pressure testing |
| DE102011100370A1 (en) * | 2011-05-03 | 2012-11-08 | Bundesanstalt für Wasserbau | Method for non-damaging testing of bollard, particularly of platform bollard of port or sluice system, about its damage or its anchoring strength, involves contactless measuring vibration of bollard with microphone |
Non-Patent Citations (1)
| Title |
|---|
| 汽车降噪非织造材料的研发与测试;齐烨;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20091015;全文 * |
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| CN103837595A (en) | 2014-06-04 |
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