CN201707128U - Noise detecting device of shock absorber - Google Patents
Noise detecting device of shock absorber Download PDFInfo
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- CN201707128U CN201707128U CN2010202388536U CN201020238853U CN201707128U CN 201707128 U CN201707128 U CN 201707128U CN 2010202388536 U CN2010202388536 U CN 2010202388536U CN 201020238853 U CN201020238853 U CN 201020238853U CN 201707128 U CN201707128 U CN 201707128U
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- shock absorber
- noise
- judgement
- noises
- detecting device
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Abstract
The utility model provides a noise detecting device of a shock absorber, comprising a power indicator as well as a sensor, a signal collecting system and a signal analyzing system which are sequentially connected. The noise detecting device of shock absorber carries out data collection, conversion and aftertreatment of multiple signals comprising accelerated speed, displacement, sound pressure and the like under the sine excitation of certain temperature and amplitude and frequencies on the shock absorber to obtain the judgement limit values of noises of the shock absorber under different conditions, and uses the judgement limit values as the judgement basis of the noise level of the shock absorber. The method for detecting and judging the noises of the shock absorber not only can determine the judgement standard of the noises, but also carry out noise screening to the same type of shock absorber products on production lines in the same method after determining the judgement standard without verification on the whole vehicle so as to accumulate basis data and control basis for the noise control of the shock adsorber and point out the optimization direction.
Description
Technical field
The utility model relates to a kind of device that is applied to the vehicular shock absorber walkaway.
Background technology
Shock absorber noise perplexs vibroshock enterprise and whole-car firm always, also is the chronic disease of whole industry, and the mass loss that causes every year is huge, directly has influence on the prestige of product on market.Because suitable detection technique and the evaluation method of neither one causes shock absorber noise control to be shot at random, effect is little at present.
The utility model content
Technical problem to be solved in the utility model provides a kind of shock absorber noise detection device.
The technical scheme that the utility model technical solution problem is adopted is: the shock absorber noise pick-up unit, comprise dynamometer machine, and also comprise the sensor, signal acquiring system and the Signal Analysis System that connect successively.
The beneficial effects of the utility model are: shock absorber noise pick-up unit of the present utility model at vibroshock under the sinusoidal excitation of uniform temperature and certain amplitude, frequency, carry out data acquisition, conversion and the aftertreatment of multiple signals such as acceleration, displacement, acoustic pressure, obtain the judge limit value of shock absorber noise under different condition, with this judging basis as the shock absorber noise level.Shock absorber noise of the present utility model detects and evaluation method, not only can determine the judge standard (limit value) of noise, and after the judge standard is determined, adopting uses the same method can also carry out the noise screening to the vibroshock product of the same type on the production line, and need not on car load, to verify, thereby, and indicated the optimization direction for shock absorber noise control has accumulated basic data and control foundation.
Description of drawings
Fig. 1 is the scheme of installation of I type of the present utility model walkaway.
Fig. 2 is the scheme of installation of II type of the present utility model walkaway.
Fig. 3 is the scheme of installation of III type of the present utility model walkaway.
Fig. 4 is a testing result process decision chart of the present utility model.
Embodiment
Shock absorber noise detection system of the present utility model is made up of dynamometer machine and signal acquiring processing system, wherein, signal acquiring processing system adopts sensor, signal acquiring system and Signal Analysis System are connected in sequence, under the uniform temperature condition, dynamometer machine applies certain amplitude to vibroshock, the sinusoidal excitation of frequency, and vibroshock is carried out acceleration by sensor and signal acquiring system, displacement, the data acquisition of multiple signal such as acoustic pressure, and these signals are transferred to Signal Analysis System handle, obtain the judge limit value of shock absorber noise under different condition, with this judging basis as the shock absorber noise level.Wherein, the sensor can be selected sound pressure sensor 4, acceleration transducer 5 and displacement transducer 6 respectively according to the signal type of concrete needs detection.
Concrete detection method of the present utility model is as follows:
1) I type walkaway
As shown in Figure 1, vibroshock 1 is installed between the crossbeam 2 and hydraulic cylinder 3 on the dynamometer machine, and directly over the piston rod part of vibroshock 1 and the side of fuel tank a sound pressure sensor 4 is set respectively, a displacement transducer 6 is set in the dynamometer machine lower end, under the different temperature conditions of vibroshock fuel tank, dynamometer machine is exported certain amplitude, the sinusoidal excitation of frequency, acoustic pressure by 2 sound pressure sensors, 4 induction vibroshocks 1, the displacement of displacement transducer 6 induction dynamometer machine lower ends, and this displacement and sound pressure signal be transferred to signal acquiring system, vibroshock is carried out the data acquisition of displacement and sound pressure signal, and, obtain the achievement data of shock absorber noise under different condition by the Signal Analysis System processing.On the other hand, go out I type noise level limit on the vibroshock according to such achievement data statistical inductions of a large amount of accumulation again.
2) II type walkaway
As shown in Figure 2, vibroshock 1 is installed between the crossbeam 2 and hydraulic cylinder 3 on the dynamometer machine, and an acceleration transducer 5 is set directly over the piston rod part of vibroshock 1, a displacement transducer 6 is set in the dynamometer machine lower end, under the different temperature conditions of vibroshock fuel tank, dynamometer machine is exported certain amplitude, the sinusoidal excitation of frequency, acceleration by acceleration transducer 5 induction vibroshocks 1, the displacement of displacement transducer 6 induction dynamometer machine lower ends, and this acceleration and displacement signal be transferred to signal acquiring system, carry out the data acquisition of acceleration and displacement signal, and, obtain the achievement data of shock absorber noise under different condition by the Signal Analysis System processing.On the other hand, go out II type noise level limit on the vibroshock according to such achievement data statistical inductions of a large amount of accumulation again.
3) III type walkaway
As shown in Figure 3, vibroshock 1 is installed between the crossbeam 2 and hydraulic cylinder 3 on the dynamometer machine, and an acceleration transducer 5 is set directly over the piston rod part of vibroshock 1, an acceleration transducer 5 is set in the dynamometer machine lower end, under the different temperature conditions of vibroshock fuel tank, dynamometer machine is exported certain amplitude, the sinusoidal excitation of frequency, respond to the acceleration of vibroshock 1 and dynamometer machine lower end respectively by 2 acceleration transducers 5, and these acceleration signals are transferred to signal acquiring system, carry out the data acquisition of acceleration signal, and, obtain the achievement data of shock absorber noise under different condition by the Signal Analysis System processing.On the other hand, go out III type noise level limit on the vibroshock according to such achievement data statistical inductions of a large amount of accumulation again.
Fig. 4 is the testing result process decision chart of acceleration of the present utility model or acoustic pressure, other vibroshock product of the same type is carried out the similar detection analysis, the data that obtain compare with the judge limit value in the certain frequency scope, judge whether can accept, decision method is: passing judgment on is unacceptable on the limit value line, is passing judgment under the limit value to accepting.
Claims (2)
1. the shock absorber noise pick-up unit comprises dynamometer machine, it is characterized in that: also comprise the sensor, signal acquiring system and the Signal Analysis System that connect successively.
2. shock absorber noise pick-up unit as claimed in claim 1 is characterized in that: described sensor is sound pressure sensor (4), acceleration transducer (5) and displacement transducer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202388536U CN201707128U (en) | 2010-06-28 | 2010-06-28 | Noise detecting device of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202388536U CN201707128U (en) | 2010-06-28 | 2010-06-28 | Noise detecting device of shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201707128U true CN201707128U (en) | 2011-01-12 |
Family
ID=43444291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202388536U Expired - Fee Related CN201707128U (en) | 2010-06-28 | 2010-06-28 | Noise detecting device of shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201707128U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871810A (en) * | 2010-06-28 | 2010-10-27 | 四川宁江山川机械有限责任公司 | Shock absorber noise detection device and method |
| CN109211594A (en) * | 2018-09-18 | 2019-01-15 | 苏州道捷电子科技有限公司 | A kind of automobile absorber test device |
| CN111351661A (en) * | 2018-12-24 | 2020-06-30 | 观致汽车有限公司 | Method for evaluating knocking noise of steering column by using vibration exciter |
-
2010
- 2010-06-28 CN CN2010202388536U patent/CN201707128U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871810A (en) * | 2010-06-28 | 2010-10-27 | 四川宁江山川机械有限责任公司 | Shock absorber noise detection device and method |
| CN101871810B (en) * | 2010-06-28 | 2013-03-13 | 四川宁江山川机械有限责任公司 | Shock absorber noise detection device and method |
| CN109211594A (en) * | 2018-09-18 | 2019-01-15 | 苏州道捷电子科技有限公司 | A kind of automobile absorber test device |
| CN111351661A (en) * | 2018-12-24 | 2020-06-30 | 观致汽车有限公司 | Method for evaluating knocking noise of steering column by using vibration exciter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20130628 |