WO2011118667A1 - Procédé de mesure et dispositif de mesure des propriétés au sol d'un pneu - Google Patents

Procédé de mesure et dispositif de mesure des propriétés au sol d'un pneu Download PDF

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Publication number
WO2011118667A1
WO2011118667A1 PCT/JP2011/057066 JP2011057066W WO2011118667A1 WO 2011118667 A1 WO2011118667 A1 WO 2011118667A1 JP 2011057066 W JP2011057066 W JP 2011057066W WO 2011118667 A1 WO2011118667 A1 WO 2011118667A1
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WIPO (PCT)
Prior art keywords
tire
measuring
shear stress
direction shear
rotating drum
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PCT/JP2011/057066
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English (en)
Japanese (ja)
Inventor
勲 桑山
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株式会社ブリヂストン
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Publication date
Application filed by 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Publication of WO2011118667A1 publication Critical patent/WO2011118667A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • G01M17/022—Tyres the tyre co-operating with rotatable rolls

Definitions

  • the present invention relates to a method and an apparatus for measuring contact characteristics of a tire, and more specifically, a measuring method and an apparatus for measuring at least the contact pressure, width direction shear stress and circumferential direction shear stress of a rolling tire, By measuring the ground contact characteristics of tires at various speeds, camber angles and slip angles with high efficiency, high accuracy and high reproducibility, for example, quantitative determination of the ground contact state with the tire road surface during cornering and acceleration / deceleration
  • the present invention relates to a measurement method and a measurement apparatus for tire contact pressure characteristics, which can be easily obtained with high resolution and can also provide tire contact characteristics during high-speed running.
  • a tire tread pattern measuring device comprising: a tire pressing plate having a tire pressing plate attached between a tire and a drum so as to be movable in a drum axial direction; and a pressure-sensitive sensor attached to a tire contact surface of the tire pressing plate.
  • a tire pressing plate having a tire pressing plate attached between a tire and a drum so as to be movable in a drum axial direction
  • a pressure-sensitive sensor attached to a tire contact surface of the tire pressing plate.
  • the present invention measures the ground contact characteristics of tires at various speeds, camber angles and slip angles with high efficiency, high accuracy, and high reproducibility, so that cornering, acceleration / deceleration, etc.
  • a method and an apparatus for measuring the contact pressure characteristic of a tire which can quantitatively and easily obtain the contact state with the road surface of the tire and which can also measure the contact characteristic of the tire during high speed running For the purpose.
  • the gist configuration of the present invention that solves the above problems is as follows.
  • the method for measuring the contact characteristics of a tire according to the present invention is a method for measuring the contact characteristics of a rolling tire, and includes at least measuring means capable of measuring the contact pressure, width direction shear stress and circumferential direction shear stress of the tire. In a state where a tire as a measurement object having a required camber angle and slip angle is brought into contact with a rotary drum embedded in a peripheral surface and capable of being driven to rotate, the rotary drum and the tire are both rotated.
  • the tire in the contact area with the rotation drum is measured. And obtaining a ground pressure distribution, a widthwise shear stress distribution, and a circumferential shear stress distribution.
  • “required camber angle and slip angle” includes 0 °.
  • the rotational speed of the tire and the rotational speed of the rotary drum may be different.
  • the measuring means is a three-component force sensor capable of measuring tire contact pressure, width direction shear stress and circumferential direction shear stress.
  • the apparatus for measuring the ground contact characteristics of a tire is an apparatus for measuring the ground contact characteristics of a rolling tire, and includes at least measuring means capable of measuring the ground contact pressure, the widthwise shear stress, and the circumferential shear stress of the tire.
  • a rotating drum embedded in a peripheral surface, drum driving means for controlling the rotating speed of the rotating drum, and a tire as a measurement object are moved toward and away from the rotating drum in the direction of the rotating shaft and the rotating drum.
  • a tire control stand that displaces the tire in a direction to rotate, a tire drive unit that controls the rotation speed of the tire, and a tire angle control unit that gives a required camber angle and slip angle to the tire. .
  • the measuring means is a three-component force sensor capable of measuring tire contact pressure, width direction shear stress and circumferential direction shear stress.
  • the measuring means is embedded in the circumferential surface of the rotatable rotating drum, and the tire is axially rotated while rotating together with the tire in contact with the rotating drum.
  • the measuring means embedded in the circumferential surface of the rotating drum is moved relative to the grounding area in the direction of the rotation axis of the rotating drum with a constant pitch width, the grounding area is repeatedly Therefore, the ground contact characteristics of the tire at each pitch through which the measuring means passes can be quickly measured sequentially from the end of the ground contact region in the drum axial direction.
  • this measurement method does not maneuver the vehicle, the measurement can be performed indoors without using a large test site, and since only the rotating drum and the tire are moved, the air resistance is reduced. And is less susceptible to external factors such as unevenness on the test road surface, so that the ground contact characteristics of the tire can be measured with high accuracy and high reproducibility.
  • the measurement limit in measuring the ground contact characteristics of the tire can be greatly improved. Specifically, it is possible to measure up to about 400 km / h in speed and up to about 50 kN in load.
  • the ground contact state of the tire during cornering can be accurately reproduced.
  • the rotation speed and rotation of the tire If the rotational speed of the drum is different, it is possible to reproduce the ground contact state of the tire when the vehicle is braking / driving at various speeds.
  • At least the ground contact pressure, the width direction shear stress and the circumferential direction shear stress of the tire are simultaneously measured at the same location on the tire.
  • the method for measuring the ground contact characteristics of the tire according to the present invention it is possible to easily know where the axial force of the tire is generated on the road surface when the vehicle is traveling under various conditions. It is possible to quantitatively grasp the tire slip phenomenon and the distribution of the friction coefficient in the ground contact area and verify them.
  • the tire ground contact property measuring apparatus of the present invention in particular, a drum in which the measuring means is embedded in the peripheral surface, and a tire angle control means for giving a required camber angle and strip angle to the tire as a measurement symmetry.
  • the measuring means is a three-component force sensor capable of measuring the contact pressure, width direction shear stress and circumferential direction shear stress of the tire. Unlike the case of separately measuring contact pressure, width direction shear stress and circumferential direction shear stress, it is possible to measure the stress state at the same point on the tire surface, and to strictly evaluate the correlation between the three. Is possible.
  • the apparatus for measuring contact characteristics of a tire includes at least measurement means 1 that can measure the contact pressure P, width direction shear stress ⁇ x and circumferential direction shear stress ⁇ y of the tire T.
  • a rotary drum 2 that is embedded in the surface
  • the drum drive means 3 for controlling the rotational speed V d of the rotary drum 2, the tire T as measured, the direction of the rotation axis a of the rotary drum 2, and the rotary drum against (in the illustrated example, the direction perpendicular to the rotation axis a of the rotary drum 2) direction toward and away from the tire control stand 4 for displacing the, the tire driving means 5 for controlling the rotational speed V t of the tire T
  • tire angle control means 6 for providing the tire T with the required camber angle CA and slip angle SA.
  • the measurement means 1 is a small three-component force sensor. According to the three-component force sensor, the ground pressure P, the width direction shear stress ⁇ x and the circumferential direction shear stress ⁇ of the tire T are measured. y can be measured.
  • the tire angle control means 6 When measuring the ground contact characteristics, the tire angle control means 6 gives a camber angle CA, a slip angle SA, or a camber angle CA to the tire T as shown in FIG. In addition to this, if the grounding force of the tire T to be brought into contact with the rotating drum 2 is adjusted, the state of the tire during cornering or the like is reproduced, and the grounding is achieved. Characteristics can be obtained. It is also possible to measure the camber angle CA and the slip angle SA applied to the tire both at 0 °, and in this case, the ground contact characteristic when the vehicle is traveling straight is measured.
  • the tire T is gradually displaced in the direction of the rotation axis A of the rotating drum 2, and the ground pressure P, the width direction shear stress ⁇ x and the circumferential direction shear stress of the tire T are ⁇ y is measured.
  • the measuring means 1 passes through the ground contact area 7 of the tire T every time the rotary drum 2 rotates, and the path of the measuring means 1 on the ground contact area 7 is the tire Along with the gradual displacement of T in the direction of the rotation axis A, the T is displaced with a pitch width P of each circumference.
  • ground contact characteristics of the tire are obtained by using the data of the ground contact pressure P, the width direction shear stress ⁇ x and the circumferential direction shear stress ⁇ y obtained by the method for measuring the contact pressure of the tire T of the present invention. Can be obtained.
  • the contact pressure distribution, the width direction shear stress distribution and the circumferential direction shear stress distribution of the tire T in the contact region 7 can be expressed.
  • the processing apparatus is not particularly limited and includes a general-purpose numerical analysis program “MATLAB” (Mathworks).
  • the friction coefficient ⁇ can be calculated by the following equation (1) using the contact pressure P, the width direction shear stress ⁇ x and the circumferential direction shear stress ⁇ y .
  • the pitch P can be adjusted by adjusting the rotational speed V d of the rotary drum 2, and a displacement speed of the rotational axis A of the tire T. That is, if slow displacement speed of the tire T with respect to the rotational speed V d, the pitch width P is reduced, it is possible to obtain more measurement data, clearly represent the contact region of the tire at high resolution On the other hand, if the displacement speed of the tire T is increased, the measurement can be completed earlier, so that the measurement efficiency can be improved.
  • the pitch width P is usually preferably around 2 mm, and more preferably in the range of 1 to 4 mm.
  • the rotation axis A of the rotary drum 2 and the rotation axis of the tire T are equal to each other. According to this, in particular, the camber angle CA of the tire T is set. Further, since there is an advantage that the slip angle SA can be more accurately reflected on the contact surface, a more accurate measurement can be realized.
  • the number of the measuring means 1 is not particularly limited to one, and if necessary, for example, in the direction of the rotation axis A of the rotating drum 2 or A plurality of them may be embedded by arranging them in the circumferential direction.
  • a caramel block tire T having a tire size of 205 / 55R16 was manufactured, and the tire T was mounted on the tire control stand 4 according to the position shown in FIG.
  • the camber angle CA 0 °
  • the rotational speed V t of the tire T 100 km / h
  • the rotational speed V d of the rotating drum 2 100 km / h
  • the pitch width P 2 mm
  • the circumferential resolution 1/3 mm.
  • the contact pressure P, the width direction shear stress ⁇ x and the circumferential direction shear stress ⁇ y of the tire T were measured.
  • Tire 1 Measuring means Rotating drum 3 Drum driving means 4 Tire control stand 5 Tire driving means 6 Tire angle control means 7 Grounding area A Rotating drum rotation axis CA Camber angle SA Slip angle P Pitch width

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tires In General (AREA)

Abstract

La présente invention concerne un procédé de mesure des propriétés au sol d'un pneu mobile. Un pneu (T) est mis en contact avec des angles de carrossage et des angles de chasse à l'intérieur d'un tambour tournant (2) en dessous d'un moyen de mesure (1), et est tourné dans les deux directions. La pression de contact au sol, la contrainte de cisaillement dans le sens de la largeur, et la contrainte de cisaillement dans le sens circonférentiel du pneu (T) sont mesurées simultanément lorsque le pneu (T) est déplacé au moyen de la direction axiale de rotation du tambour tournant (2).
PCT/JP2011/057066 2010-03-26 2011-03-16 Procédé de mesure et dispositif de mesure des propriétés au sol d'un pneu WO2011118667A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-073266 2010-03-26
JP2010073266A JP2011203207A (ja) 2010-03-26 2010-03-26 タイヤの接地特性の測定方法及び測定装置

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WO2011118667A1 true WO2011118667A1 (fr) 2011-09-29

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2876423A4 (fr) * 2012-07-20 2016-06-15 Bridgestone Corp Procédé de mesure de propriétés de contact de pneumatiques et dispositif de mesure
CN109932312A (zh) * 2018-07-19 2019-06-25 中国石油大学(华东) 管道清管器密封橡胶盘摩擦系数测试装置及测试方法
EP3543674A4 (fr) * 2016-11-15 2019-11-06 Toyo Tire Corporation Procédé et dispositif de mesure des propriétés de contact au sol d'un pneu
CN113167688A (zh) * 2018-12-10 2021-07-23 株式会社普利司通 车辆动作模拟方法和车辆动作模拟系统
CN113167686A (zh) * 2018-12-04 2021-07-23 株式会社普利司通 轮胎接地特性测量方法、轮胎接地特性测量装置以及轮胎接地特性测量系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6042844B2 (ja) * 2014-05-07 2016-12-14 株式会社ブリヂストン タイヤの接地特性の測定方法及び測定装置
JP6467104B1 (ja) * 2018-09-21 2019-02-06 株式会社エー・アンド・デイ タイヤ試験装置
JP6467103B1 (ja) * 2018-09-21 2019-02-06 株式会社エー・アンド・デイ タイヤ試験装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0926382A (ja) * 1995-07-11 1997-01-28 Sumitomo Rubber Ind Ltd 台上摩耗エネルギー測定試験機
DE19704605C1 (de) * 1997-02-07 1998-06-10 Continental Ag Vorrichtung zur Bestimmung und/oder zur Demonstration der auf die Profilelemente eines Fahrzeugrads wirkenden Kräfte
JPH11142265A (ja) * 1997-11-07 1999-05-28 Mitsubishi Heavy Ind Ltd タイヤ接地面荷重計測装置
JP2002502963A (ja) * 1998-02-04 2002-01-29 ザ・グッドイヤー・タイヤ・アンド・ラバー・カンパニー ３軸力ピンセンサアレイ
JP2005214860A (ja) * 2004-01-30 2005-08-11 Bridgestone Corp タイヤ踏面の接地部測定装置、及びタイヤ踏面の接地部測定方法
US20060123897A1 (en) * 2002-12-20 2006-06-15 Carlo Monguzzi Properties of a tire with sensor signals of speed of deformation
JP2006226778A (ja) * 2005-02-16 2006-08-31 Sumitomo Rubber Ind Ltd タイヤの接地圧分布測定装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56137107A (en) * 1980-03-28 1981-10-26 Sumitomo Metal Ind Ltd Measuring device for bending of tube-shaped metallic material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0926382A (ja) * 1995-07-11 1997-01-28 Sumitomo Rubber Ind Ltd 台上摩耗エネルギー測定試験機
DE19704605C1 (de) * 1997-02-07 1998-06-10 Continental Ag Vorrichtung zur Bestimmung und/oder zur Demonstration der auf die Profilelemente eines Fahrzeugrads wirkenden Kräfte
JPH11142265A (ja) * 1997-11-07 1999-05-28 Mitsubishi Heavy Ind Ltd タイヤ接地面荷重計測装置
JP2002502963A (ja) * 1998-02-04 2002-01-29 ザ・グッドイヤー・タイヤ・アンド・ラバー・カンパニー ３軸力ピンセンサアレイ
US20060123897A1 (en) * 2002-12-20 2006-06-15 Carlo Monguzzi Properties of a tire with sensor signals of speed of deformation
JP2005214860A (ja) * 2004-01-30 2005-08-11 Bridgestone Corp タイヤ踏面の接地部測定装置、及びタイヤ踏面の接地部測定方法
JP2006226778A (ja) * 2005-02-16 2006-08-31 Sumitomo Rubber Ind Ltd タイヤの接地圧分布測定装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2876423A4 (fr) * 2012-07-20 2016-06-15 Bridgestone Corp Procédé de mesure de propriétés de contact de pneumatiques et dispositif de mesure
EP3543674A4 (fr) * 2016-11-15 2019-11-06 Toyo Tire Corporation Procédé et dispositif de mesure des propriétés de contact au sol d'un pneu
CN109932312A (zh) * 2018-07-19 2019-06-25 中国石油大学(华东) 管道清管器密封橡胶盘摩擦系数测试装置及测试方法
CN109932312B (zh) * 2018-07-19 2021-05-28 中国石油大学(华东) 管道清管器密封橡胶盘摩擦系数测试装置及测试方法
CN113167686A (zh) * 2018-12-04 2021-07-23 株式会社普利司通 轮胎接地特性测量方法、轮胎接地特性测量装置以及轮胎接地特性测量系统
CN113167688A (zh) * 2018-12-10 2021-07-23 株式会社普利司通 车辆动作模拟方法和车辆动作模拟系统
US11879809B2 (en) 2018-12-10 2024-01-23 Bridgestone Corporation Vehicle action simulation method and vehicle action simulation system

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