CN100434334C - Noise reduction method for balancing rotation system of car - Google Patents
Noise reduction method for balancing rotation system of car Download PDFInfo
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- CN100434334C CN100434334C CNB2006101560519A CN200610156051A CN100434334C CN 100434334 C CN100434334 C CN 100434334C CN B2006101560519 A CNB2006101560519 A CN B2006101560519A CN 200610156051 A CN200610156051 A CN 200610156051A CN 100434334 C CN100434334 C CN 100434334C
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- transmission shaft
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- back axle
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Abstract
A balancing and noise-reducing method for the drive system of car includes such steps as finding out the most light point by measuring and calculation, finding out the maxima sectional jump point and the maximal radial jump point on the cross-section at the connection position between main speed reducer and drive axle, vector synthesis to obtain a maximal point, determining the most unbalance point by crossing the connection line between the maximal point and the circle center of cross-section with the circumference of cross-section, and assembling in such manner that the distance between said the most light point and the most unbalance point is as short as possible.
Description
Technical field
The present invention relates to a kind of method that reduces car noise, relate in particular to a kind of method that reduces automotive transmission noise balancing.
Background technology
The change speed gear box of rear drive vehicle is connected by transmission shaft with rear driving axle, because transmission shaft itself has a unbalancing value in the course of processing, in the process of moving, the transmission shaft of high speed revolution will be delivered to back axle with this amount of unbalance, cause the vibration of back axle gear meshing, produce noise.The method that reduces the transmission system noise at present mainly is to detect the kinetic balance maximum point with method of inspection, assembles with the kinetic balance maximum point.Though this kind method has certain effect, because the kinetic balance maximum point can not be the truest, the unbalancing value of actv. reaction transmission shaft is so the balancing noise-reduction method effect of utilizing this point to determine is also not satisfactory.
Summary of the invention
The present invention is directed to the kinetic balance maximum point can not be the truest, the deficiency of actv. reaction transmission shaft unbalancing value, has adopted a kind of method of utilizing the emphasis of back axle amount of unbalance to solve the balancing rotation system noise reduction.
The present invention is achieved by the following technical solutions:
A kind of method of balancing rotation system of car noise reduction, at first, according to the automobile industry standard QC/T290821992 of People's Republic of China (PRC) vehicle driving shaft assembly engineering factor, and the quality of transmission shaft can calculate this transmission shaft design allowable amount of unbalance, under the condition of this design allowable amount of unbalance, mark the position of the maximum amount of unbalance of transmission shaft in the flange outer rim of transmission shaft, promptly dub most.
Secondly, on the section of rear-end gear reduction and transmission shaft junction, find out the beat maximum point of maximum point and radial runout of section, with radial runout maximum point and the section maximum point of beating, can get maximum point through behind the vector resultant, the line in the maximum point and the section center of circle hands over the section circumference in a bit, and this point is the emphasis of back axle amount of unbalance.
At last, the emphasis of back axle amount of unbalance is showed on the back axle flange flange, in assembling, utilize to dub most on the transmission shaft and assemble, get final product with 2 minimum principles of distance with the emphasis of back axle amount of unbalance.
Transmission shaft is in rotary course, because the quality of whole transmission shaft is not that the centre of form that is distributed in transmission shaft fully is on the axial line, transmission shaft will produce a unbalancing value in rotary course like this, and in like manner the back axle master subtracts also produce a unbalancing value in rotation process.Being connected with four special bolts of transmission shaft and back axle connects, be equivalent to be rigidly connected, if the maximum unbalancing value position of transmission shaft and back axle is at the homonymy of die joint, the main unbalancing value that subtracts increases in the same way before the unbalancing value of transmission shaft and the back axle like this, the main vector unbalancing value that subtracts increases before the back axle, and noise increases thereupon; If incorgruous the subtracting each other of unbalancing value that subtracts at the heteropleural of die joint, led like this in the maximum unbalancing value position of transmission shaft and back axle before the unbalancing value of transmission shaft and the back axle, the main vector unbalancing value that subtracts reduces before the back axle, and noise decreases; According to the automobile industry standard QC/T29082-1992 of People's Republic of China (PRC) vehicle driving shaft assembly engineering factor, and the quality of transmission shaft can calculate this transmission shaft design allowable amount of unbalance, under the condition of this design allowable amount of unbalance, mark the position of the maximum amount of unbalance of transmission shaft in the flange outer rim of transmission shaft, promptly dub most.Find out the main emphasis that subtracts amount of unbalance at the blue place of back axle master subtraction equally.So, the emphasis that dubs with back axle of transmission shaft mates in Near Range, can reach the unbalancing value minimum of transmission system, reaches the purpose that noise reduces.
After utilizing the method assembling,, made following automobile test in order to check the effect of this noise-reduction method:
The noise figure tabulation that microphone is measured under the each point friction speed compares.
(1) comparison of right position microphone before and after each speed pairing behind the back axle
| Speed Km/h | 30 | 50 | 70 | 90 | 100 | 110 |
| materearaxleright(dB) | 69.5 | 69.5 | 70.0 | 68.7 | 69.3 | 68.7 |
| nomaterearaxleright (dB) | 72.8 | 72.4 | 71.9 | 71.7 | 75.9 | 71.7 |
(2) comparison of left position microphone before and after each speed pairing behind the back axle
| Speed Km/h | 30 | 50 | 70 | 90 | 100 | 110 |
| materearaxleleft(dB) | 85.6 | 92.3 | 98.4 | 100.6 | 103.4 | 105.4 |
| nomaterearaxleleft (dB) | 86.6 | 94.2 | 98.6 | 101.6 | 103.6 | 106.7 |
(3) the main comparison that subtracts the position microphone in each speed pairing front and back before the back axle
| Speed Km/h | 30 | 50 | 70 | 90 | 100 | 110 |
| materearaxleleft(dB) | 86.9 | 93.1 | 98.5 | 101.0 | 103.6 | 107.1 |
| nomaterearaxleleft (dB) | 88.1 | 95.3 | 99.4 | 102.1 | 103.2 | 106.9 |
(4) comparison of transmission shaft after poppet position transmission shaft noise figure before and after pairing
| Speed Km/h | 30 | 50 | 70 | 90 | 100 | 110 |
| materearaxleleft(dB) | 85.8 | 92.6 | 97.6 | 101.0 | 103.6 | 105.6 |
| nomaterearaxleleft (dB) | 86.7 | 93.7 | 98.6 | 101.9 | 103.5 | 107.0 |
(5) comparison of transmission shaft front frame position transmission shaft noise figure before and after pairing
| Speed Km/h | 30 | 50 | 70 | 90 | 100 | 110 |
| materearaxleleft(dB) | 85.4 | 91.3 | 98.1 | 101.4 | 103.0 | 105.9 |
| nomaterearaxleleft (dB) | 85.0 | 91.9 | 97.5 | 102.0 | 103.9 | 106.7 |
(6) comparison of change speed gear box position noise value before and after pairing
| Speed Km/h | 30 | 50 | 70 | 90 | 100 | 110 |
| matetransmission(dB) | 88.2 | 93.1 | 100.1 | 104.1 | 105.4 | 108.0 |
| nomatetransmission (dB) | 89.0 | 95.3 | 100.6 | 104.5 | 106.9 | 108.6 |
Correlation data from above-mentioned six forms can find out that the method effect of utilizing the emphasis of back axle amount of unbalance to solve the balancing rotation system noise reduction is more accurate and effective.
Description of drawings
Fig. 1 is transmission shaft and back axle connecting assembly structural representation.
Fig. 2 is the section static balance scheme drawing of rear-end gear reduction and transmission shaft junction.
The specific embodiment
Referring to Fig. 1,2.
The method of balancing rotation system of car noise reduction, at first, according to the automobile industry standard QC/T29082-1992 of People's Republic of China (PRC) vehicle driving shaft assembly engineering factor, and the quality of transmission shaft (3) can calculate this transmission shaft (3) design allowable amount of unbalance, under the condition of this design allowable amount of unbalance, mark the position of the maximum amount of unbalance of transmission shaft (3) in the flange outer rim of transmission shaft (3), promptly dub most.
Secondly, on the section of the junction (2) of rear-end gear reduction (1) and transmission shaft (3), find out the beat maximum point B point of maximum point A point and radial runout of section, with radial runout maximum point B point and the section maximum point A point of beating, can get maximum point C point through behind the vector resultant, the line in the maximum point C point and the section center of circle hands over the section circumference in 1 D point, and the D point is the emphasis of back axle amount of unbalance.
At last, the emphasis D point of back axle amount of unbalance is showed on the back axle flange flange, in assembling, utilize to dub most on the transmission shaft (3) and assemble, get final product with the principle of 2 o'clock distance minimums with emphasis D o'clock of back axle amount of unbalance.
Claims (1)
1, a kind of method of balancing rotation system of car noise reduction, at first, according to the automobile industry standard QC/T29082-1992 of People's Republic of China (PRC) vehicle driving shaft assembly engineering factor, and the quality of transmission shaft can calculate this transmission shaft design allowable amount of unbalance, under the condition of this design allowable amount of unbalance, mark the position of the maximum amount of unbalance of transmission shaft in the flange outer rim of transmission shaft, promptly dub most;
It is characterized in that further comprising the steps of:
(1) on the section of rear-end gear reduction and transmission shaft junction, finds out section beat maximum point and radial runout maximum point, with radial runout maximum point and the section maximum point of beating, can get maximum point through behind the vector resultant, the line in the maximum point and the section center of circle hands over the section circumference in a bit, and this point is the emphasis of back axle amount of unbalance;
(2) the emphasis of back axle amount of unbalance is showed on the back axle flange flange, in assembling, utilize to dub most on the transmission shaft and assemble with 2 minimum principles of distance with the emphasis of back axle amount of unbalance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101560519A CN100434334C (en) | 2006-12-31 | 2006-12-31 | Noise reduction method for balancing rotation system of car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101560519A CN100434334C (en) | 2006-12-31 | 2006-12-31 | Noise reduction method for balancing rotation system of car |
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| Publication Number | Publication Date |
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| CN101003291A CN101003291A (en) | 2007-07-25 |
| CN100434334C true CN100434334C (en) | 2008-11-19 |
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| CNB2006101560519A Active CN100434334C (en) | 2006-12-31 | 2006-12-31 | Noise reduction method for balancing rotation system of car |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE546357T1 (en) * | 2008-10-20 | 2012-03-15 | Mactaggart Scott | DEVICE AND METHOD FOR ROTATING A SHAFT |
| CN102221402B (en) * | 2011-06-26 | 2013-06-12 | 北京理工大学 | Design method for rear drive axle of micro-surface automobile with low noise |
| CN102303481B (en) * | 2011-06-26 | 2014-06-04 | 北京理工大学 | Low-noise microbus rear drive axle |
| CN106763487B (en) * | 2016-12-21 | 2019-02-15 | 桐乡市瑞远纺织有限公司 | A kind of flywheel buffer gear of multi-line |
| CN107918702B (en) * | 2017-11-10 | 2021-04-06 | 上海纳铁福传动系统有限公司 | Method for evaluating initial unbalance amount of transmission shaft |
| CN112081899A (en) * | 2020-09-15 | 2020-12-15 | 株洲齿轮有限责任公司 | Method for improving NVH performance of pure electric vehicle drive assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4302966A (en) * | 1979-01-30 | 1981-12-01 | Bridgestone Tire Company Limited | Method of assembling a wheel tire |
| US4887989A (en) * | 1987-12-28 | 1989-12-19 | A. O. Smith Corporation | Dynamically balanced driveshaft and method of producing the same |
| DE4120197A1 (en) * | 1991-06-19 | 1992-12-24 | Audi Ag | Balancing coupled rotors with numerical eccentricity measurement - using balance wt. calculation and positioning from prod. of eccentricity and empirical sum of rotating masses |
| US5203740A (en) * | 1990-01-29 | 1993-04-20 | Nissan Motor Co., Ltd. | Drive shaft assembly |
| CN2148209Y (en) * | 1993-01-20 | 1993-12-01 | 李力丰 | Reducing steel pipe type transmission shaft |
| CN1573160A (en) * | 2003-05-15 | 2005-02-02 | 达纳公司 | System and method for balancing a driveline system |
-
2006
- 2006-12-31 CN CNB2006101560519A patent/CN100434334C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4302966A (en) * | 1979-01-30 | 1981-12-01 | Bridgestone Tire Company Limited | Method of assembling a wheel tire |
| US4887989A (en) * | 1987-12-28 | 1989-12-19 | A. O. Smith Corporation | Dynamically balanced driveshaft and method of producing the same |
| US5203740A (en) * | 1990-01-29 | 1993-04-20 | Nissan Motor Co., Ltd. | Drive shaft assembly |
| DE4120197A1 (en) * | 1991-06-19 | 1992-12-24 | Audi Ag | Balancing coupled rotors with numerical eccentricity measurement - using balance wt. calculation and positioning from prod. of eccentricity and empirical sum of rotating masses |
| CN2148209Y (en) * | 1993-01-20 | 1993-12-01 | 李力丰 | Reducing steel pipe type transmission shaft |
| CN1573160A (en) * | 2003-05-15 | 2005-02-02 | 达纳公司 | System and method for balancing a driveline system |
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| CN101003291A (en) | 2007-07-25 |
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Patentee before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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