CN105701069B - The estimated mileage evaluation method of tire based on unit wear - Google Patents
The estimated mileage evaluation method of tire based on unit wear Download PDFInfo
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Abstract
The present invention provides a kind of tire based on unit wear estimated mileage evaluation method, being worn away with toe shape for decorative pattern ditch depth and pattern block is measured respectively, wherein pattern block takes to wear away adjacent lugs with toe shape after intermediate value with the abrasion of toe shape carries out average computation, then obtain each groove and remove the ditch depth value after being influenceed with the abrasion of toe shape, decorative pattern ditch depth value is computed repeatedly based on different distance travelleds, the unit wear repeatedly measured is subjected to average computation, mean unit abrasion are obtained, and then estimate estimated mileage.Invention introduces being worn away with toe shape for pattern block and calculated, and is influenceed by elimination with the measurement that toe shape is worn away on decorative pattern ditch depth and estimates estimated mileage using unit wear, improves the efficiency and precision of estimated mileage calculation analysis.
Description
Technical field
The present invention relates to tyre technology, and in particular to a kind of estimated mileage estimation side of tire based on unit wear
Method.
Background technology
With requirement more and more higher of the market to tire, the development efficiency of new product is also improving, while evaluates tire
Can mode it is also diversified, wherein tire road test be before launch and market condition closest to and maximally effective evaluation side
Formula, so effective processing of tire path test result is also most important.There is not the road test processing method of detail specification also at present, and
Each tire producer or tire engineer have a respective processing method, but not system and comprehensively.Existing computational methods are directly logical
After distance travelled divided by grind off ditch depth and obtain tire wear data, not in view of the different mill situation of tire, cause the pre- of tire
Count the not accurate enough influence discriminatory analysis of mileage.
The content of the invention
In order to fast and effectively calculate the estimated mileage of tire, it is estimated that the present invention provides a kind of tire based on unit wear
Mileage evaluation method.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of estimated mileage evaluation method of tire based on unit wear, comprises the following steps：
1) along tire circumferentially divide equally measure n tyre surface position, choose have abrasion mark groove and to tire radial direction according to
The ditch depth of m groove of secondary measurement, wherein n >=3, m >=3, is denoted as respectively：
hs1-1, hs1-2... hs1-m；
hs2-1, hs2-2... hs2-m；
…
hsn-1, hsn-2... hsn-m；
2) n measured value of same groove is subjected to average computation, be denoted as respectively：
AVERAGE(hs1-1,hs2-1,…hsn-1)；
AVERAGE(hs1-2,hs2-2,…hsn-2)；
…
AVERAGE(hs1-m,hs2-m,hsn-m)；
3) being worn away with toe shape in measurement groove depth identical position measurement pattern block, and radially surveyed successively along tire
K pattern block is measured, each pattern block radially takes j measurement point, wherein k >=m+1 along tire, j >=3, is denoted as respectively：
D1-1-1, D1-1-2... D1-1-j；D1-2-1, D1-2-2... D1-2-j；…D1-k-1, D1-k-2... D1-k-j；
D2-1-1, D2-1-2... D2-1-j；D2-2-1, D2-2-2... D2-2-j；…D2-k-1, D2-k-2... D2-k-j；
…
Dn-1-1, Dn-1-2... Dn-1-j；Dn-2-1, Dn-2-2... Dn-2-j；…Dn-k-1, Dn-k-2... Dn-k-j；
4) intermediate value for taking j measurement point pattern block to be worn away with toe shape, the intermediate value with the abrasion of toe shape of adjacent lugs is entered
Row average computation, is denoted as respectively：
AVERAGE(D1-1-Me,D1-2-Me,D2-1-Me,D2-2-Me,…Dn-1-Me,Dn-2-Me)；
AVERAGE(D1-2-Me,D1-3-Me,D2-2-Me,D2-3-Me,…Dn-2-Me,Dn-3-Me)；
…
AVERAGE(D1-(k-1)-Me,D1-k-Me,D2-(k-1)-Me,D2-k-Me,…Dn-(k-1)-Me,Dn-k-Me)；
5) calculated value of step 2) is subtracted to the calculated value of step 4), each groove is obtained and removes with the abrasion influence of toe shape
Ditch depth value afterwards, carry out average computation and obtain the decorative pattern ditch depth value hs1 measured for the first time；
6) the unit wear A of tire is calculated1, formula is as follows：
Wherein L1For the distance travelled measured for the first time, H is new tyre ditch depth；
7) different distance travelled repeat steps 1 are based on) to step 6), the unit wear of N-1 measurement after obtaining, wherein
N is integer, is denoted as respectively：A2, A3... AN；
8) unit wear by n times measurement carries out average computation, obtains mean unit abrasion A0；
9) estimated mileage L is calculated0, formula is as follows：
L0=A0*(H-h)
Wherein h is tire wear indicator depth.
Preferably, in step 1), the ditch depth of groove is measured using depth gauge rule, during measurement the cantilever of the depth gauge rule ride over by
Survey the high point position of groove both sides pattern block.
Preferably, in step 3), pattern block is measured with the abrasion of toe shape using depth gauge rule, the cantilever of depth gauge rule during measurement
Ride over the high point position of front and rear pattern block.
Preferably, in step 3), pattern block radially takes 3 measurement points along tire, respectively the flex point of pattern block both sides and
The middle part of pattern block.
From above technical scheme, wear away and calculate with toe shape present invention introduces pattern block, ground by eliminating with toe shape
Consuming the measurement on decorative pattern ditch depth influences and estimates estimated mileage using unit wear, improves the effect of estimated mileage calculation analysis
Rate and precision.
Brief description of the drawings
Fig. 1 is the distribution situation of pattern block and groove in the preferred embodiment of the present invention；
Fig. 2 is the schematic diagram that groove ditch depth is measured in the preferred embodiment of the present invention；
Fig. 3 is the schematic diagram that measurement pattern block is worn away with toe shape in the preferred embodiment of the present invention；
Fig. 4 is the location drawing of the pattern block along tire radially 3 measurement points in the preferred embodiment of the present invention.
Embodiment
A kind of preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the estimated mileage evaluation method of tire of the present invention is applied to driving position pattern type, have crisscross
Groove, and pattern block is shaped as rectangle or polygon.
Measured firstly the need of to decorative pattern ditch depth, circumferentially divide equally along tire and measure 3 tyre surface positions, selection there are abrasion to mark
The groove of note and the ditch depth for radially measuring 4 grooves successively to tire, are denoted as respectively：
hs1-1, hs1-2, hs1-3, hs1-4；
hs2-1, hs2-2, hs2-3, hs2-4；
hs3-1, hs3-2, hs3-3, hs3-4；
Then same groove is subjected to average computation in 3 circumferential measured values of tire, be denoted as respectively：
Due to block-type tread, pattern block elder generation ground end is contacted with ground and is deformed in the rolling, and this deformation is with pattern block
Rolling be gradually transferred to the liftoff end of pattern block, the strain energy of distortion of pattern block discharges from liftoff end when liftoff, so liftoff
The pattern block part at end and ground produce Relative sliding thus produce abrasion, so as to phenomenon low after height before producing, i.e. pattern block
With toe shape wear away.Therefore need to use depth gauge rule in decorative pattern ditch depth measurement, the cantilever of the depth gauge rule rides over tested flower during measurement
The high point position of groove both sides pattern block, reference picture 2.
In being worn away with toe shape for measurement 3 position measurement pattern blocks of groove depth identical, and along tire radial direction successively
6 pattern blocks are measured, each pattern block radially takes the flex point and pattern block of 3 measurement points, respectively pattern block both sides along tire
Middle part, reference picture 4.The result of measurement is denoted as respectively：
D1-1-1, D1-1-2, D1-1-3；D1-2-1, D1-2-2, D1-2-3；D1-3-1, D1-3-2, D1-3-3；
D1-4-1, D1-4-2, D1-4-3；D1-5-1, D1-5-2, D1-5-3；D1-6-1, D1-6-2, D1-6-3；
D2-1-1, D2-1-2, D2-1-3；D2-2-1, D2-2-2, D2-2-3；D2-3-1, D2-3-2, D2-3-3；
D2-4-1, D2-4-2, D2-4-3；D2-5-1, D2-5-2, D2-5-3；D2-6-1, D2-6-2, D2-6-3；
D3-1-1, D3-1-2, D3-1-3；D3-2-1, D3-2-2, D3-2-3；D3-3-1, D3-3-2, D3-3-3；
D3-4-1, D3-4-2, D3-4-3；D3-5-1, D3-5-2, D3-5-3；D3-6-1, D3-6-2, D3-6-3；
The intermediate value for taking 3 measurement point pattern blocks to be worn away with toe shape, the intermediate value with the abrasion of toe shape of adjacent lugs is carried out
Average computation, it is denoted as respectively：
As a result of 3 measurement points, pattern block takes the value of middle size with the intermediate value that toe shape is worn away.Pattern block with toe
Shape abrasion are measured using depth gauge rule, and the cantilever of the depth gauge rule rides over the high point position of front and rear pattern block, reference picture 3 during measurement.
The calculated value of formula (1) is subtracted to the calculated value of formula (2), each groove is obtained and removes with after the abrasion influence of toe shape
Ditch depth value, carry out average computation and obtain the decorative pattern ditch depth value hs1 measured for the first time, calculate the unit wear for measuring tire for the first time
A1, formula is as follows：
Wherein L1For the distance travelled measured for the first time, H is new tyre ditch depth.
Repeated the above steps based on different distance travelleds, the unit wear of 5 measurements, is denoted as respectively after obtaining：A2、A3、
A4、A5、A6。
The unit wear of 6 measurements is subjected to average computation, obtains mean unit abrasion A0, calculate estimated mileage L0, formula
It is as follows：
L0=A0*(H-h)
Wherein h is tire wear indicator depth.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (4)
1. the estimated mileage evaluation method of a kind of tire based on unit wear, it is characterised in that comprise the following steps：
1) circumferentially divide equally along tire and measure n tyre surface position, choose the groove for there are abrasion to mark and radially surveyed successively to tire
The ditch depth of m groove is measured, wherein n >=3, m >=3, is denoted as respectively：
hs1-1, hs1-2... hs1-m；
hs2-1, hs2-2... hs2-m；
…
hsn-1, hsn-2... hsn-m；
2) n measured value of same groove is subjected to average computation, be denoted as respectively：
AVERAGE(hs1-1,hs2-1,…hsn-1)；
AVERAGE(hs1-2,hs2-2,…hsn-2)；
…
AVERAGE(hs1-m,hs2-m,hsn-m)；
3) being worn away with toe shape in measurement groove depth identical position measurement pattern block, and k is radially measured successively along tire
Individual pattern block, each pattern block radially take j measurement point, wherein k >=m+1 along tire, j >=3, are denoted as respectively：
D1-1-1, D1-1-2... D1-1-j；D1-2-1, D1-2-2... D1-2-j；…D1-k-1, D1-k-2... D1-k-j；
D2-1-1, D2-1-2... D2-1-j；D2-2-1, D2-2-2... D2-2-j；…D2-k-1, D2-k-2... D2-k-j；
…
Dn-1-1, Dn-1-2... Dn-1-j；Dn-2-1, Dn-2-2... Dn-2-j；…Dn-k-1, Dn-k-2... Dn-k-j；
4) intermediate value for taking the pattern block of j measurement point to be worn away with toe shape, the intermediate value with the abrasion of toe shape of adjacent lugs is carried out
Average computation, it is denoted as respectively：
AVERAGE(D1-1-Me,D1-2-Me,D2-1-Me,D2-2-Me,…Dn-1-Me,Dn-2-Me)；
AVERAGE(D1-2-Me,D1-3-Me,D2-2-Me,D2-3-Me,…Dn-2-Me,Dn-3-Me)；
…
AVERAGE(D1-(k-1)-Me,D1-k-Me,D2-(k-1)-Me,D2-k-Me,…Dn-(k-1)-Me,Dn-k-Me)；
5) calculated value of step 2) is subtracted to the calculated value of step 4), each groove is obtained and removes with after the abrasion influence of toe shape
Ditch depth value, carry out average computation and obtain the decorative pattern ditch depth value hs measured for the first time1；
6) the unit wear A of tire is calculated1, formula is as follows：
<mrow>
<msub>
<mi>A</mi>
<mn>1</mn>
</msub>
<mo>=</mo>
<mfrac>
<msub>
<mi>L</mi>
<mn>1</mn>
</msub>
<mrow>
<mi>H</mi>
<mo>-</mo>
<msub>
<mi>hs</mi>
<mn>1</mn>
</msub>
</mrow>
</mfrac>
</mrow>
Wherein L1For the distance travelled measured for the first time, H is new tyre ditch depth；
7) different distance travelled repeat steps 1 are based on) to step 6), the unit wear of N-1 measurement, wherein N are after obtaining
Integer, it is denoted as respectively：A2, A3... AN；
8) unit wear by n times measurement carries out average computation, obtains mean unit abrasion A0；
9) estimated mileage L is calculated0, formula is as follows：
L0=A0*(H-h)
Wherein h is tire wear indicator depth.
2. the estimated mileage evaluation method of tire according to claim 1, it is characterised in that in step 1), the ditch of groove
Deep to be measured using depth gauge rule, the cantilever of the depth gauge rule rides over the high point position of tested groove both sides pattern block during measurement.
3. the estimated mileage evaluation method of tire according to claim 1, it is characterised in that in step 3), pattern block with
The abrasion of toe shape are measured using depth gauge rule, and the cantilever of the depth gauge rule rides over the high point position of front and rear pattern block during measurement.
4. the estimated mileage evaluation method of tire according to claim 1, it is characterised in that in step 3), pattern block edge wheel
Tire radially takes 3 measurement points, the respectively middle part of the flex point of pattern block both sides and pattern block.
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| CN108437706A (en) * | 2018-01-26 | 2018-08-24 | 安徽佳通乘用子午线轮胎有限公司 | It is a kind of based on road test groove measurement data to the evaluation method of tire eccentric wear degree |
| CN109459250B (en) * | 2018-08-30 | 2020-09-18 | 中汽研汽车检验中心（天津）有限公司 | Test evaluation method for car tire abrasion |
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| US6532811B2 (en) * | 2001-01-26 | 2003-03-18 | Bridgestone/Firestone North American Tire, Llc | Method of wear testing a tire |
| US20100139383A1 (en) * | 2006-11-17 | 2010-06-10 | Treadcheck Limited | Apparatus and method for monitoring tyre wear |
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2016
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| US6034596A (en) * | 1998-09-15 | 2000-03-07 | Smith; Julian | Motor vehicle tire pressure and temperature sensing system |
| CN101620031A (en) * | 2008-07-03 | 2010-01-06 | 施耐宝仪器股份有限公司 | Apparatus for determining the condition of a tire tread of a vehicle wheel |
| CN102201132A (en) * | 2011-03-09 | 2011-09-28 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal and travel prompt method |
| CN103208139A (en) * | 2013-03-01 | 2013-07-17 | 浙江吉利汽车研究院有限公司杭州分公司 | Method for recording travel distance of vehicle tire and recording instrument for implementing the method |
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