CN201429494Y - Elastic supporting device for modal test - Google Patents
Elastic supporting device for modal test Download PDFInfo
- Publication number
- CN201429494Y CN201429494Y CN2009200937606U CN200920093760U CN201429494Y CN 201429494 Y CN201429494 Y CN 201429494Y CN 2009200937606 U CN2009200937606 U CN 2009200937606U CN 200920093760 U CN200920093760 U CN 200920093760U CN 201429494 Y CN201429494 Y CN 201429494Y
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- China
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- air spring
- modal test
- anchor clamps
- test
- air
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
An elastic supporting device for modal test is characterized in that the elastic supporting device comprises an air spring, a clamp, an air valve, limited posts and a base, wherein a plane clamp is connected to the upper end of the air spring; the air valve for the air inflation and deflation of the air spring extends out of the lower part of the clamp; limited posts are mounted in four holes formed at the four corners of the clamp; and a larger disc base is connected to the lower end of the air spring. The utility model has the characteristics of portability, novelty and strong practicability, so that the system installation in the modal test is very convenient, the adjustment is easy, and the precision of the test result is high.
Description
Technical field
The utility model belongs to the technical field of modal parameter measurement mechanism, particularly the modal test resilient supporting unit.
Background technology
Big assembly of automobile such as truck cap, vehicle frame, bridge, the isostructural inherent characteristic of passenger car vehicle body (or body in white) have very important influence to performances such as the vibration of automobile integral body, noise, comfortablenesses, on stream, these big assemblies must carry out the modal test analysis, thereby dynamic perfromances such as its issuable vibration, noise are estimated, for the vibration noise performance of optimizing car load provides reference frame.And important techniques of modal test require to be exactly the vibration frequency of the vibrational system formed of tested structure and bracing or strutting arrangement must be low as much as possible (1～4hz), otherwise influence test findings.Because the weight and volume of these assemblies is relatively large, traditional test unit normally is placed on these structures on the air tube of inflation or with spring/elastic string and hangs up.When supporting with pneumatic tyre, though can adjust the rigidity of tire by filling, exitting, make tested structural vibrations frequency lower, the contact area of surface of tyre and structure is excessive, and rubber damping has considerable influence to the mode of structure contact site; Hang with spring/elastic string and can only satisfy structure and have certain elastic vibration in vertical direction, elasticity in the horizontal is but very little, and the vibration frequency of this suspending way is difficult for adjusting simultaneously, and structure also can produce bigger local stress at sling point.Number of test results shows that the effect of this dual mode is all undesirable.Therefore for a long time, the modal test supporting way of the big assembly of automobile is technological difficulties of automobile research and development industry always.
Summary of the invention
The utility model purpose provides a kind of modal test resilient supporting unit.
The utility model has solved the boundary condition input problem of the big assembly modal test of automobile, can set up test-bed fast, has reduced test preliminary work amount, has shortened the test period.
The technical solution of the utility model is achieved in that
The modal test resilient supporting unit, it is characterized by: it comprises air spring, anchor clamps, air valve, limited post and base, air spring is equipped with the air valve that fills, exits, upper end at air spring, connect plane anchor clamps, there are four holes at four angles on anchor clamps, and limited post is installed herein, connect a disc base in the lower end of air spring.
The utlity model has characteristics such as light, novel, practical, the system during modal test installs very convenient, is easy to adjust the stringency of test height.
Description of drawings
Fig. 1 is the single-stage air spring structural representation that is equipped with of the present utility model.
Fig. 2 is the two-stage air-spring structure synoptic diagram that is equipped with of the present utility model.
Specific embodiments
Describe specific embodiments of the present utility model in detail below in conjunction with accompanying drawing.
The modal test resilient supporting unit, it is characterized by: it comprises air spring, anchor clamps, air valve, limited post and base, upper end at air spring 4, connect plane anchor clamps 2, the air valve 3 that air spring fills, exits stretches out from the anchor clamps below, there are four holes at four angles on anchor clamps, and limited post 1 is installed herein, connect a bigger disc base 5 in the lower end of air spring 4.
The modal test resilient supporting unit is characterized by: described air spring 4 can be installed together for single-stage or the air spring more than the single-stage 4.
Embodiment:
The utility model adopts high resiliency, high-durability, can fill separately, venting, the less air spring 4 of volume, and the maximum compressive resistance of air spring 4 reaches 7bar, the support requirement in the time of can satisfying greater weight automobile assembly or structure and carry out modal test.According to different tested structures, air spring 4 can be selected single-stage, also can select twin-stage.In the upper end of air spring 4, connect the plane anchor clamps of making of aluminium alloy 2 of the lighter about 160mm * 100mm of weight, be convenient to place tested structure.The air valve 3 that fills, exits for air spring stretches out from the anchor clamps below, and there are four holes at four angles on anchor clamps, herein limited post 1 can be installed, when preventing to test, and structure landing from the anchor clamps; Lower end at air spring 4 connects a bigger disc base 5, to increase the stability of device, also can air spring 4 be connected to other bases as on iron square chest or the iron floor by this disk 5.
During modal test, be inflated to the specified air pressure in 80% left and right sides, then tested structure freely be placed on the plane anchor clamps 2 of air spring upper end, load onto limited post 1 earlier at the air spring 4 of the arranged beneath requirement of tested structure, and with air spring 4.Bleed off the part air in the air spring 4, turn down the vibration frequency of system, up to the test specification that satisfies 1～4Hz, to note making tested structure maintenance level simultaneously, finish adjustment after, promptly can carry out modal test, after test finishes, tested structure taken off from air spring get final product.
Claims (5)
1, modal test resilient supporting unit, it is characterized by: it comprises air spring (4), anchor clamps (2), air valve (3), limited post (1) and base (5), air spring (4) is equipped with the air valve (3) that fills, exits, upper end jockey (2) at air spring (4), go up installation limited post (1) at anchor clamps (2), at the lower end of air spring (4) clutch disk base (5).
2, modal test resilient supporting unit according to claim 1 is characterized by: described anchor clamps (2) are the plane anchor clamps.
3, modal test resilient supporting unit according to claim 1 is characterized by: described air valve (3) stretches out from the below of anchor clamps (2).
4, modal test resilient supporting unit according to claim 1 is characterized by: there are four holes at four angles on the described anchor clamps (2), and limited post (1) is installed herein.
5, modal test resilient supporting unit according to claim 1 is characterized by: described air spring (4) can be installed together for single-stage or the air spring more than the single-stage (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200937606U CN201429494Y (en) | 2009-06-05 | 2009-06-05 | Elastic supporting device for modal test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200937606U CN201429494Y (en) | 2009-06-05 | 2009-06-05 | Elastic supporting device for modal test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201429494Y true CN201429494Y (en) | 2010-03-24 |
Family
ID=42033233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200937606U Expired - Lifetime CN201429494Y (en) | 2009-06-05 | 2009-06-05 | Elastic supporting device for modal test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201429494Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376201A (en) * | 2012-04-19 | 2013-10-30 | 南车青岛四方机车车辆股份有限公司 | Experimental method for simulating failure process of air spring and experimental apparatus thereof |
| CN103868667A (en) * | 2012-12-12 | 2014-06-18 | 重庆长安汽车股份有限公司 | Automobile plate constraint mode test fixture and method |
| CN104251763A (en) * | 2014-08-28 | 2014-12-31 | 北京新能源汽车股份有限公司 | Power battery vibration testing system for electric automobile |
-
2009
- 2009-06-05 CN CN2009200937606U patent/CN201429494Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376201A (en) * | 2012-04-19 | 2013-10-30 | 南车青岛四方机车车辆股份有限公司 | Experimental method for simulating failure process of air spring and experimental apparatus thereof |
| CN103376201B (en) * | 2012-04-19 | 2016-05-25 | 中车青岛四方机车车辆股份有限公司 | Air spring failure procedure analogue experiment method and device |
| CN103868667A (en) * | 2012-12-12 | 2014-06-18 | 重庆长安汽车股份有限公司 | Automobile plate constraint mode test fixture and method |
| CN104251763A (en) * | 2014-08-28 | 2014-12-31 | 北京新能源汽车股份有限公司 | Power battery vibration testing system for electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA FAW CO., LTD. Free format text: FORMER OWNER: CHINESE AUTO GROUP CO NO.1 Effective date: 20111201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111201 Address after: 130011 Changchun Province, West New Economic and Technological Development Zone, Dongfeng Street, No. 2259, No. Patentee after: China FAW Group Corporation Address before: 130011 Dongfeng Street, Jilin, Changchun, No. 2259 Patentee before: China FAW Group Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100324 |