CN103278340B - A kind of dynamic assembly suspension vibration and noise test system and method for testing thereof - Google Patents
A kind of dynamic assembly suspension vibration and noise test system and method for testing thereof Download PDFInfo
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- CN103278340B CN103278340B CN201310160554.3A CN201310160554A CN103278340B CN 103278340 B CN103278340 B CN 103278340B CN 201310160554 A CN201310160554 A CN 201310160554A CN 103278340 B CN103278340 B CN 103278340B
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Abstract
The invention provides a kind of dynamic assembly suspension vibration and noise test system and method for testing thereof, problem to be solved is: nacelle space is less, and the power hammer needed during test or vibrator are difficult to arrange usually, very difficult when test operation; Technical essential of the present invention is that the overarm brace at supporting traverse two ends is plugged on the sway brace of bearing, and supporting traverse downward vertical is provided with two mounting brackets, is fixed with dynamic assembly suspension device below mounting bracket, is bolt and connects between above-mentioned parts; Be provided with base support assembly below dynamic assembly suspension device, base support assembly and bearing fix on the ground; Can obtain the contribution degree of power assembly suspension system vibration to car internal vibration noise, the test-bed structure of the method application is simple, is easy to processing, has very strong versatility, and only need to regulate mounting bracket position according to different automobile types, experimentation cost is cheap.
Description
Technical field
The present invention relates to automobile dynamic system acoustical behavior field tests, especially a kind of dynamic assembly suspension vibration and noise test system and method for testing thereof.
Background technology
Along with the development of society, automobile has become an indispensable part in people's daily life, and automobile noise pollution problem is following, and corresponding the automobile noise control regulation is also more and more stricter.
One of main source of power assembly automobile vibration noise, power assembly vibration is delivered in car mainly through power assembly suspension system.Therefore, the vibration isolation capability of power assembly suspension system directly has influence on automobile vibration noise level.
At present, under car load condition, automobile industry mainly adopts the method measuring suspension mounting points vibratory output to power assembly suspension system evaluation.Although the method is more convenient, because each subsystem of automobile all has impact to car internal vibration noise, be difficult to determine the contribution of power assembly suspension system to car internal vibration noise.Although bang path method can test the contribution of suspension system to car internal vibration noise, because nacelle space is less, the power hammer needed during test or vibrator are difficult to arrange usually, very difficult when test operation.
Summary of the invention
The object of this invention is to provide a kind of dynamic assembly suspension vibration and noise test system and method for testing thereof.
Technical scheme of the present invention is: the overarm brace at supporting traverse two ends is plugged on the sway brace of bearing, and supporting traverse downward vertical is provided with two mounting brackets, is fixed with dynamic assembly suspension device below mounting bracket; Be provided with base support assembly below dynamic assembly suspension device, base support assembly and bearing fix on the ground; The sway brace installed surface of described bearing is evenly equipped with adjusting hole, and the installed surface of supporting traverse is evenly equipped with adjusting hole, and sway brace and supporting traverse are all with " work " shaped sections; Described base support assembly comprises lower carriage, trimmer, base crossbeam, installs lower carriage in base crossbeam center, and on lower carriage, cover has trimmer.The sway brace installed surface of described bearing is evenly equipped with ten adjusting holes, and supporting traverse installed surface is evenly equipped with at least six adjusting holes.
Suspension system noise testing method testing process is:
1, vehicle is installed on anechoic room chassis dynamometer;
2, arrange near driver's auris dextra and arrange microphone near the left ear position of microphone and rear row occupant and be connected with data collector; Near pilot set slide rail, bearing circle ten two positions, accelerator pedal bracket position, shift handle upper end arrange a vibration transducer respectively and be connected with data collector, and carrying out Initialize installation to data collector;
3, start vehicle and keep vehicle fixation idling operation, keeping this operating mode, by data collector to vibration transducer record data, after record 2 to 4 group test figures, completing test;
4, start vehicle and keep automobile gear level to be in 2 grades, data collector starts to record data, make vehicle throttle be in full-gear, until stop record data when engine speed reaches engine peak speed, after record 2 to 4 group test figures, complete test;
5, start vehicle and keep automobile gear level to be in 3 grades, data collector starts to record data, make vehicle throttle be in full-gear, until stop record data when engine speed reaches engine peak speed, after record 2 to 4 group test figures, complete test;
6, start vehicle and keep automobile gear level to be in 2 grades, engine speed remains on engine peak speed, data collector starts to record data, being totally released gas pedal makes vehicle keep sliding state, until vehicle motor rotating speed reaches stablize constant stopping record test figure, after record 2 to 4 group test figures, complete test;
7, start vehicle and keep automobile gear level to be in 3 grades, engine speed remains on engine peak speed, data collector starts to record data, being totally released gas pedal makes vehicle keep sliding state, until vehicle motor rotating speed reaches stablize constant stopping record test figure, after record 2 to 4 group test figures, complete test;
8, dynamic assembly suspension device is connected on mounting bracket and base support assembly;
9, bearing, base support assembly are connected with ground;
10, bearing is connected by overarm brace with supporting traverse;
11, mounting bracket is connected with supporting traverse, ensures that dynamic assembly suspension device position is consistent with disengaging car load front position;
12, repeat step 3), 4), 5), 6), 7);
13, in analysis software, depart from front and back car internal vibration noise level to dynamic assembly suspension to analyze, calculate power assembly suspension system to car internal vibration noise contribution degree.
The invention has the beneficial effects as follows that the method can obtain the contribution degree of power assembly suspension system vibration to car internal vibration noise, the test-bed structure of the method application is simple, is easy to processing, has very strong versatility, only need to regulate mounting bracket position according to different automobile types, experimentation cost is cheap.
Accompanying drawing explanation
Fig. 1 is that testing apparatus of the present invention arranges schematic diagram;
Fig. 2 is the structural representation of suspension system noise measuring system of the present invention;
Fig. 3 is seat structure schematic diagram in Fig. 2;
Fig. 4 is Fig. 3 vertical view;
Fig. 5 supports transverse cross girder construction schematic diagram in Fig. 2;
Fig. 6 is Fig. 5 side view;
Fig. 7 is base support assembly structural representation in Fig. 2.
Embodiment
See Fig. 1, the two ends of supporting traverse 13 are connected with overarm brace 12 bolt respectively, and use overarm brace to insert bearing 9; Be disposed with mounting bracket 11, dynamic assembly suspension device 10 below beam support, be bolt between above-mentioned parts and connect, be provided with base support assembly 8 below dynamic assembly suspension device, base support assembly and bearing fix on the ground; The sway brace installed surface of described bearing is evenly equipped with at least ten adjusting holes 14, and supporting traverse installed surface is evenly equipped with at least six adjusting holes, and the cross section of sway brace and supporting traverse is " work " font; Lower carriage 17 is installed in base crossbeam 19 center of described base support assembly, and on lower carriage, cover has trimmer 18.According to dynamic assembly suspension device position adjustment base support assembly 8 and bearing 9 position, lower carriage 17 setting height(from bottom) is adjusted by trimmer 18, the horizontal installation site of mounting bracket 11 is regulated by adjusting hole 14, bearing 9 is provided with adjusting hole 14, for adjusting mounting bracket 11 vertical height, according to dynamic assembly suspension device car load installation site adjusting supporting device, make dynamic assembly suspension device depart from front and back position and remain unchanged.
Dynamic assembly suspension vibration and noise test system detection method, before test, test vehicle is parked on anechoic room chassis dynamometer, advancing equipment 3 near driver's auris dextra, advancing equipment 1 near the rear left ear position of row occupant, advancing equipment 4 near pilot set slide rail, bearing circle 12 location arrangements equipment 5, accelerator pedal bracket location arrangements equipment 6, shift handle upper end advancing equipment 7, carries out experimental test according to following steps:
(1) start vehicle and keep vehicle fixation idling operation, keeping this operating mode, by data collector to vibration transducer record data, after record 2 to 4 group test figures, completing test;
(2) start vehicle and keep automobile gear level to be in 2 grades, data collector starts to record data, make vehicle throttle be in full-gear, until stop record data when engine speed reaches engine peak speed, after record 2 to 4 group test figures, complete test;
(3) start vehicle and keep automobile gear level to be in 3 grades, data collector starts to record data, make vehicle throttle be in full-gear, until stop record data when engine speed reaches engine peak speed, after record 2 to 4 group test figures, complete test;
(4) start vehicle and keep automobile gear level to be in 2 grades, engine speed remains on engine peak speed, data collector starts to record data, being totally released gas pedal makes vehicle keep sliding state, until vehicle motor rotating speed reaches stablize constant stopping record test figure, after record 2 to 4 group test figures, complete test;
(5) start vehicle and keep automobile gear level to be in 3 grades, engine speed remains on engine peak speed, data collector starts to record data, being totally released gas pedal makes vehicle keep sliding state, until vehicle motor rotating speed reaches stablize constant stopping record test figure, after record 2 to 4 group test figures, complete test;
(6) dynamic assembly suspension device is connected on mounting bracket and base support assembly;
(7) bearing, base support assembly are connected with ground;
(8) bearing is connected by overarm brace with supporting traverse;
(9) mounting bracket is connected with supporting traverse, ensures that dynamic assembly suspension device position is consistent with disengaging car load front position;
(10) repeat step 1), 2), 3), 4), 5);
(11) in analysis software, depart from front and back car internal vibration noise level to dynamic assembly suspension to analyze, calculate power assembly suspension system to car internal vibration noise contribution degree.
Claims (3)
1. a dynamic assembly suspension vibration and noise test system, it comprises the middle bearing with supporting traverse, it is characterized in that: the overarm brace at supporting traverse two ends is plugged on the sway brace of bearing, supporting traverse downward vertical is provided with two mounting brackets, is fixed with dynamic assembly suspension device below mounting bracket; Be provided with base support assembly below dynamic assembly suspension device, base support assembly and bearing fix on the ground; The installed surface of described supporting traverse is evenly equipped with adjusting hole, and sway brace and supporting traverse are all with " work " shaped sections; Described base support assembly comprises lower carriage, trimmer, base crossbeam, installs lower carriage in base crossbeam center, and on lower carriage, cover has trimmer.
2. dynamic assembly suspension vibration and noise test system according to claim 1, is characterized in that: the sway brace installed surface of described bearing is evenly equipped with ten adjusting holes, and supporting traverse installed surface is evenly equipped with at least six adjusting holes.
3. a suspension system noise testing method, the method adopts dynamic assembly suspension device, vibration transducer, microphone, data collector and dynamic assembly suspension vibration and noise test system to realize, and it is characterized in that:
(1) vehicle is installed on anechoic room chassis dynamometer;
(2) two microphones are arranged in vehicle drive position to be connected with data collector with on the clinodiagonal back row seats of operator seat; Vibration transducer is arranged in operator seat surrounding and is connected with data collector, and carries out Initialize installation to data collector;
(3) start vehicle and keep vehicle fixation idling operation, keeping this operating mode, by data collector to vibration transducer record data, after record 2 to 4 group test figures, completing test;
(4) start vehicle and keep automobile gear level to be in 2 grades, data collector starts to record data, make vehicle throttle be in full-gear, until stop record data when engine speed reaches engine peak speed, after record 2 to 4 group test figures, complete test;
(5) start vehicle and keep automobile gear level to be in 3 grades, data collector starts to record data, make vehicle throttle be in full-gear, until stop record data when engine speed reaches engine peak speed, after record 2 to 4 group test figures, complete test;
(6) start vehicle and keep automobile gear level to be in 2 grades, engine speed remains on engine peak speed, data collector starts to record data, being totally released gas pedal makes vehicle keep sliding state, until vehicle motor rotating speed reaches stablize constant stopping record test figure, after record 2 to 4 group test figures, complete test;
(7) start vehicle and keep automobile gear level to be in 3 grades, engine speed remains on engine peak speed, data collector starts to record data, being totally released gas pedal makes vehicle keep sliding state, until vehicle motor rotating speed reaches stablize constant stopping record test figure, after record 2 to 4 group test figures, complete test;
(8) dynamic assembly suspension device is connected on mounting bracket and base support assembly;
(9) bearing, base support assembly are connected with ground;
(10) bearing is connected by overarm brace with supporting traverse;
(11) mounting bracket is connected with supporting traverse, ensures that dynamic assembly suspension device position is consistent with disengaging car load front position;
(12) repeat step 3), 4), 5), 6), 7);
(13) in analysis software, depart from front and back car internal vibration noise level to dynamic assembly suspension to analyze, calculate power assembly suspension system to car internal vibration noise contribution degree.
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| CN201310160554.3A CN103278340B (en) | 2013-05-03 | 2013-05-03 | A kind of dynamic assembly suspension vibration and noise test system and method for testing thereof |
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| CN104515661B (en) * | 2014-12-29 | 2017-04-05 | 安徽江淮汽车集团股份有限公司 | A kind of method of the vibration contribution amount of measurement suspension point |
| CN106033027A (en) * | 2015-03-09 | 2016-10-19 | 陕西重型汽车有限公司 | Rigid modal testing device and rigid modal testing method of heavy type automotive power assembly suspension system |
| CN105628186B (en) * | 2015-12-30 | 2019-02-01 | 华晨汽车集团控股有限公司 | A kind of automobile rolling noise test macro and noise testing method |
| BR112018015685A2 (en) * | 2016-04-21 | 2018-12-26 | Nsk Ltd. | abnormal noise detection method of steering system and steering system evaluation device |
| CN106383032A (en) * | 2016-09-19 | 2017-02-08 | 东风汽车公司 | Power assembly fixing clamp for speeding up interior noise contribution removal test |
| CN108122560A (en) * | 2016-11-28 | 2018-06-05 | 华晨汽车集团控股有限公司 | A kind of system and method for extracting engine noise tone degree |
| CN106644512B (en) * | 2016-12-22 | 2019-04-30 | 北京汽车股份有限公司 | Noise analysis approach and system based on power assembly load |
| CN109696237B (en) * | 2017-10-24 | 2021-09-21 | 上海汽车集团股份有限公司 | Vibration noise test device for automobile power assembly suspension system |
| CN108195596A (en) * | 2017-12-24 | 2018-06-22 | 中山市得高行知识产权中心（有限合伙） | A kind of new-energy automobile power assembly test platform |
| CN109357831A (en) * | 2018-11-30 | 2019-02-19 | 上海上汽马瑞利动力总成有限公司 | A kind of heavy vehicle power assembly vibration tong |
| CN110146263A (en) * | 2019-05-14 | 2019-08-20 | 江阴圣世杰机械制造有限公司 | Cab of heavy truck suspension system assembly quality detection device and detection method |
| CN111896276A (en) * | 2020-07-24 | 2020-11-06 | 东风商用车有限公司 | Test bench of power assembly suspension system idle speed vibration |
| CN113418723A (en) * | 2021-06-21 | 2021-09-21 | 哈尔滨东安汽车动力股份有限公司 | Method for measuring vibration isolation rate of finished automobile suspension |
| CN113984404B (en) * | 2021-09-23 | 2023-07-25 | 东风汽车集团股份有限公司 | Commercial car power assembly suspension vibration isolation test stand |
| CN113959734A (en) * | 2021-10-18 | 2022-01-21 | 中国第一汽车股份有限公司 | Method, device, medium and equipment for separating noise source in vehicle |
| CN114674515B (en) * | 2022-03-22 | 2023-04-07 | 苏州信科检测技术有限公司 | Vibration noise test system |
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