WO2009116513A1 - Dispositif d'essai de pneus et procédé d'essai de pneus - Google Patents

Dispositif d'essai de pneus et procédé d'essai de pneus Download PDF

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Publication number
WO2009116513A1
WO2009116513A1 PCT/JP2009/055124 JP2009055124W WO2009116513A1 WO 2009116513 A1 WO2009116513 A1 WO 2009116513A1 JP 2009055124 W JP2009055124 W JP 2009055124W WO 2009116513 A1 WO2009116513 A1 WO 2009116513A1
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WO
WIPO (PCT)
Prior art keywords
spindle shaft
tire
testing machine
bearing
torque
Prior art date
Application number
PCT/JP2009/055124
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English (en)
Japanese (ja)
Inventor
浩一 本家
Original Assignee
株式会社神戸製鋼所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社神戸製鋼所 filed Critical 株式会社神戸製鋼所
Publication of WO2009116513A1 publication Critical patent/WO2009116513A1/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 tire testing machine and a tire testing method capable of measuring tire characteristics such as rolling resistance with high accuracy.
  • a tire testing machine as disclosed in Patent Document 1 is known as a tire testing machine capable of measuring tire characteristics (uniformity) such as rolling resistance.
  • the tire testing machine shown in Patent Document 1 includes a main frame, a spindle shaft that is rotatably held around an axis in the vertical direction, a rim that is provided on the spindle shaft and on which a tire can be mounted, And a drum that is pressed against the tire mounted on the rim while rotating. The tangential or normal force generated in the rotating tire is measured by pressing the drum.
  • rolling resistance (tractive load) generated toward the tangential direction of the tire is one of the most important tire characteristics. This rolling resistance is obtained based on the force generated on the spindle shaft, and the force is measured by a load cell provided on the main frame.
  • an object of the present invention is to provide a tire testing machine capable of measuring the rolling resistance with high accuracy regardless of the torsion torque generated in the spindle shaft when measuring the rolling resistance of the tire.
  • the present inventors have conceived that the torsional torque generated in the spindle shaft due to the bearing resistance is detected simultaneously with the measurement of the rolling resistance. Specifically, by providing a torque detector around the spindle shaft, it is possible to accurately detect the torsional torque of the spindle shaft, and this torsional torque detection accurately corrects the measured value of rolling resistance. To improve the measurement accuracy.
  • the present invention provides a tire testing machine capable of measuring the rolling resistance of a tire with high accuracy.
  • the tire testing machine includes a spindle shaft on which the tire is mounted, a bearing housing that rotatably supports the spindle shaft via a bearing portion, an outer housing that supports the bearing housing from the outside, and the bearing housing.
  • a load cell provided between the outer housing and outputting a measurement signal corresponding to the rolling resistance of the tire, and provided around the spindle shaft, and is generated in the spindle shaft due to the rotational resistance of the bearing portion.
  • a torque detection unit that outputs a detection signal corresponding to the torsion torque; and a correction unit that corrects a rolling resistance corresponding to the measurement signal of the load cell based on the detection signal output by the torque detection unit.
  • the present invention also provides a spindle shaft on which a tire is mounted, a bearing housing that rotatably supports the spindle shaft via a bearing portion, an outer housing that supports the bearing housing, the bearing housing and the outer housing,
  • a test method for measuring the rolling resistance of a tire is provided using a tire testing machine including a load cell provided between the two.
  • a value corresponding to the rolling resistance of the tire is measured by the load cell, and a torque detection unit is provided around the axis of the spindle shaft. And detecting a value corresponding to the torsional torque generated in the spindle shaft, and correcting a value corresponding to the rolling resistance measured by the load cell based on the value detected by the torque detector.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is explanatory drawing which showed typically the twist which generate
  • FIG. 1 schematically shows a tire testing machine 1 according to this embodiment.
  • the tire testing machine 1 measures the uniformity of the tire T (uniformity of the tire T), and includes a main frame 2 erected in a bowl shape, and a drum 3 rotatably supported by the main frame 2.
  • the spindle shaft 4 is provided.
  • a tire T is mounted on the spindle shaft 4 so as to be in contact with the drum 3.
  • the spindle shaft 4 has a pair of an upper spindle shaft 5 and a lower spindle shaft 6 that are arranged vertically.
  • the vertical direction of the paper surface in FIG. 1 is defined as the vertical direction of the tire testing machine 1. Further, the direction away from the axis of the spindle shaft 4 in FIG. 1 along the radial direction is described as the radially outward direction of the tire testing machine 1, and the direction approaching the axis of the spindle shaft 4 along the radial direction is described. It is described as the inward direction of the tire testing machine 1, and the direction around the axis of the spindle shaft 4 in FIG. 1 is described as the circumferential direction. These directions coincide with the directions when the tire testing machine 1 is actually used.
  • the main frame 2 is a gate-type frame erected on the ground, and a guide frame 8 is provided at an upper portion thereof, and a tire platform 9 that can be moved up and down is provided at a lower portion thereof. On the tire platform 9, a tire T for measuring uniformity is placed.
  • the drum 3 is formed in a cylindrical shape, and is attached to the lower part of the main frame 2 so as to be rotatable around a vertical rotation axis O.
  • the drum 3 is rotationally driven by a motor (not shown), and the outer peripheral surface of the drum 3 forms a road surface on which the tire T rolls.
  • a lifting rod 11 extending in the vertical direction is fixed to the central portion of the guide frame 8.
  • An elevating cylinder 10 is interposed between the guide frame 8 and the upper end of the main frame 2, and the elevating cylinder 10 expands and contracts to move the guide frame 8 and the elevating rod 11 up and down.
  • the upper spindle shaft 5 is detachably connected to the lower end of the lifting rod 11.
  • the upper spindle shaft 5 is formed in a rod shape with a lower end 5a protruding downward, and an upper rim 12 for pressing the tire T from above is provided at an intermediate position in the vertical direction of the upper spindle shaft 5. .
  • the lower spindle shaft 6 is provided in the lower part of the main frame 2 at a position coaxial with the upper spindle shaft 5 and away from the upper spindle shaft 5.
  • a shaft hole 13 into which the lower end 5a of the upper spindle shaft 5 can be inserted from above is formed at the center of the lower spindle shaft 6, and a lower rim 14 is formed at an intermediate position in the vertical direction of the lower spindle shaft 6. Yes.
  • the upper and lower rims 12 and 14 sandwich the tire T from above and below while the lower end 5a of the upper spindle shaft 5 is inserted into the shaft hole 13 of the lower spindle shaft 6 from above.
  • the spindle shaft 5 and the lower spindle shaft 6 are coupled so as to be rotatable integrally with each other.
  • the support structure of the spindle shaft 4 includes a bearing portion 23 that holds the lower spindle shaft 6 of the spindle shaft 4, a bearing housing 15 that rotatably supports the spindle shaft 4 by the bearing portion 23, and this It includes an outer housing 16 that supports the bearing housing 15 from the outside, and a load cell 17 provided between the bearing housing 15 and the outer housing 16.
  • the bearing housing 15 includes the bearing portion 23, a cylindrical body 18 positioned coaxially with the spindle shaft 4, and a plurality of arm portions 19 that connect the cylindrical body 18 and the bearing portion 23. .
  • the cylindrical body 18 is coaxial with the spindle shaft 4 and is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the spindle shaft 4.
  • An eaves-shaped flange portion 20 is formed at the upper end of the cylindrical body 18 so as to protrude radially outward from the other portions.
  • the flange portion 20 has an insertion hole 22 into which a fastener 21 described later can be inserted.
  • a plurality of locations (four locations in the present embodiment) arranged around the axis of the shaft 4 are formed.
  • Each arm portion 19 extends in the radial direction so as to be integrally connected to the inner peripheral surface of the cylindrical body 18 and the outer peripheral surface of the bearing portion 23, and the width dimension (dimension along the circumferential direction) is high. It has a shape smaller than the dimension (vertical dimension). This shape promotes the bending of the arm portion 19 in the circumferential direction by the torsional torque acting on the spindle shaft 4 (that is, elastic deformation in the bending direction).
  • the bearing portion 23 has an annular shape coaxial with the spindle shaft 4, and holds the lower spindle shaft 6 from the outside.
  • the bearing portion 23 is held from the outside by the arm portions 19 and the cylindrical body 18, and allows relative rotation of the lower spindle shaft 6 with respect to the arm portion 19. That is, the bearing housing 15 including the arm portion 19 rotatably supports the spindle shaft 4 via the bearing portion 23.
  • the arm portion 19 is provided at a plurality of locations (four locations in this embodiment) arranged in the circumferential direction at equal intervals around the axis of the bearing housing 15 (spindle shaft 4). This makes it possible to secure the support rigidity of the spindle shaft 4 by all the arm portions 19 and thus the rigidity of the spindle shaft 4 and to prevent the breakage of each arm portion 19 and the eccentric rotation of the spindle shaft 4.
  • the outer housing 16 is formed in a cylindrical shape coaxial with the spindle shaft 4 and has an inner diameter larger than the outer diameter of the bearing housing 15 to support the bearing housing 15 from the outside of the diameter.
  • the outer housing 16 is disposed below the flange portion 20 of the bearing housing 15, and the fastener 21 with the flange portion 20 and the upper end portion of the outer housing 16 sandwiching the load cell 17 therebetween. It is concluded by.
  • the load cell 17 measures the force acting on the outer housing 16 from the spindle shaft 4 through the bearing housing 15 by being sandwiched between the outer housing 16 and the flange portion 20 of the bearing housing 15.
  • the load cell 17 of the present embodiment is a six-component force meter that measures a force acting in the radial direction, a force acting in the lateral direction, a force acting in the tractive direction (rolling resistance), and the like on the tire T.
  • the tire testing machine 1 is provided around the spindle shaft 4 and has a plurality of torsional torques generated on the spindle shaft 4 due to the rotational resistance of the bearing portion 23.
  • a torque detection unit 24 and a correction unit 25 that corrects the rolling resistance measured by the load cell 17 based on the torsional torque detected by the torque detection unit 24 are provided.
  • the torque detectors 24 are attached to the radial positions of the arm portions 19 and output signals for measuring the torsional torque of the spindle shaft 4.
  • the torque detection unit 24 is a strain gauge attached to the side surface of each arm unit 19. When the spindle shaft 4 is rotated, the arm portions 19 are pulled by the spindle shaft 4 by the rotational resistance of the bearing portion 23, and the arm portions 19 are bent in the direction of rotation as indicated by the dotted lines in FIG. Will occur.
  • Each strain gauge is an electric signal corresponding to the distortion of the surface of the arm portion 19 due to the bending (bending deformation) generated in each arm portion 19, in other words, the torsion caused by the rotational resistance of the bearing portion 23.
  • a signal (voltage) corresponding to the torque is output to the correction unit 25.
  • the correction unit 25 receives a detection signal corresponding to the torsional torque output from the torque detection unit 24 and a detection signal output from the load cell 17 and corresponding to the rolling resistance of the tire T.
  • the correction unit 25 corrects the rolling resistance measured by the load cell 17 based on the torsional torque obtained from the detection signal from the torque detection unit 24, and outputs a signal corresponding to the corrected rolling resistance. .
  • the correction unit 25 is configured by a computer, for example.
  • the tire mount 9 When measuring the uniformity of the tire T with the tire testing machine 1, first, the tire mount 9 is operated so as to descend toward the lower spindle shaft 6, and the tire T is mounted on the lower rim 14 provided on the lower spindle shaft 6. Is installed. Then, the elevating cylinder 10 lowers the upper spindle shaft 5 to cause the upper and lower rims 12 and 14 to grip the tire T. Thereafter, after the upper spindle shaft 5 and the upper rim 12 are separated from the lifting rod 11 side, the drum 3 disposed in the main frame 2 is pressed against the tire T and is rotationally driven.
  • the force generated in the rotating tire T due to the contact with the drum 3 that is driven to rotate is transmitted to the bearing housing 15 via the spindle shaft 4, and a load cell 17 provided between the bearing housing 15 and the outer housing 16 is provided. , and it outputs a measurement signal for tractive force F Z applied to the tire T. This measurement signal is input to the correction unit 25.
  • the torsional torque Ms as indicated by the dotted line in FIG. 4 is generated in the spindle shaft 4 along the rotation direction of the spindle shaft 4 due to the rotational resistance of the bearing portion 23.
  • This torsional torque Ms can be measured as a bending moment acting on the arm portion 19 along the rotation direction of the spindle shaft 4, and the bending of each arm portion 19 corresponding to the bending moment is detected by each torque. Detected by the unit 24. Signals output from these torque detectors 24, that is, detection signals corresponding to the torsion torque Ms are input to the correction unit 25.
  • the tire testing machine 1 measures the uniformity of the tire T, but the tire testing machine according to the present invention may measure tire characteristics other than the uniformity.
  • Each arm portion 19 according to the embodiment is formed integrally with the outer portion of the cylindrical body 18 and the bearing portion 23, but the arm portion according to the present invention is a member different from the cylindrical body 18 or the bearing portion 23, for example. May be joined to the cylindrical body 18 or the bearing portion 23 after being molded. Moreover, the said arm part 19 may be rib shape extended along an up-down direction.
  • load cell 17 according to the embodiment is provided between the bearing housing 15 and the outer housing 16
  • the load cell according to the present invention may be provided on the drum 3 side.
  • the present invention provides a tire testing machine capable of measuring the rolling resistance of a tire with high accuracy.
  • the tire testing machine includes a spindle shaft on which the tire is mounted, a bearing portion that holds the spindle shaft, a bearing housing that rotatably supports the spindle shaft by the bearing portion, and the bearing An outer housing that supports the housing from the outside; a load cell that is provided between the bearing housing and the outer housing and that outputs a measurement signal corresponding to the rolling resistance of the tire; and that is provided around the spindle shaft, A torque detection unit that outputs a detection signal corresponding to a torsion torque generated in the spindle shaft due to the rotational resistance of the unit, and a measurement signal of the load cell based on the detection signal output by the torque detection unit A correction unit that corrects rolling resistance.
  • the present invention also includes a spindle shaft on which a tire is mounted, a bearing portion that holds the spindle shaft, a bearing housing that rotatably supports the spindle shaft by the bearing portion, and an external that supports the bearing housing.
  • a test method for measuring the rolling resistance of a tire using a tire testing machine including a housing and a load cell provided between the bearing housing and the outer housing.
  • a value corresponding to the rolling resistance of the tire is measured by the load cell, and a torque detection unit is provided around the axis of the spindle shaft. And detecting a value corresponding to the torsional torque generated in the spindle shaft, and correcting a value corresponding to the rolling resistance measured by the load cell based on the value detected by the torque detector.
  • the accurate detection of the torsion torque generated on the spindle shaft during the measurement of the rolling resistance and the correction of the rolling resistance based on the detected torsion torque can measure the rolling resistance with high accuracy.
  • a cylindrical body positioned outside the bearing portion at a position coaxial with the spindle shaft, and a plurality of positions aligned in a circumferential direction of rotation of the spindle shaft, the bearing portion and the cylinder are provided.
  • An arm part that is elastically deformed so as to allow the bearing part to be displaced relative to the cylindrical body in the circumferential direction by the torsional torque. It is preferable that each arm portion is provided to detect its elastic strain.
  • each arm portion extends in a radial direction of rotation of the spindle shaft, and has a shape capable of bending so as to allow the bearing portion to be relatively displaced in the circumferential direction with respect to the cylindrical body. If it has, the rolling resistance can be easily calculated while using a simple one such as a strain gauge, for example, which detects the deflection of each arm portion caused by the torsional torque.
  • each arm portion has a shape in which the dimension in the circumferential direction of the rotation of the spindle shaft is smaller than the dimension in the radial direction of the rotation. This shape promotes the bending of each arm portion due to the torsional torque caused by the rotational resistance of the bearing portion, and the acceleration of the bending enhances the detection accuracy of the torsional torque and consequently the measurement accuracy of the rolling resistance.
  • the arm portions may be provided at a plurality of positions arranged at equal intervals around the spindle axis. Such an arrangement increases the support rigidity of the spindle shaft by each arm portion, and effectively suppresses breakage of the arm portion and rotation of the spindle shaft.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Testing Of Balance (AREA)
  • Tires In General (AREA)

Abstract

L'invention concerne un dispositif d'essai de pneus dans lequel la résistance au roulement peut être mesurée avec grande précision. Le dispositif d'essai de pneus (1) comprend: un arbre à broche (4) auquel le pneu (T) est fixé; un corps de palier (15) pour recevoir en rotation l'arbre à broche (4) à travers un module palier (23); un boîtier externe (16) pour recevoir le corps de palier (15); un dynamomètre piézoélectrique (17) installé entre le corps de palier (15) et le boîtier externe (16); un module de détection de couple (24) installé autour de l'arbre à broche (4) pour détecter le couple de torsion généré dans l'arbre à broche (4) du fait de la résistance au roulement du palier; et un module de correction (25) pour corriger la résistance au roulement mesurée par le dynamomètre piézoélectrique (17) en fonction du couple de torsion détecté par le module de détection de couple (24).
PCT/JP2009/055124 2008-03-18 2009-03-17 Dispositif d'essai de pneus et procédé d'essai de pneus WO2009116513A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-069127 2008-03-18
JP2008069127A JP2009222639A (ja) 2008-03-18 2008-03-18 タイヤ試験装置及びタイヤ試験方法

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WO2009116513A1 true WO2009116513A1 (fr) 2009-09-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9618416B2 (en) 2010-12-15 2017-04-11 Kobe Steel, Ltd. Method of calibrating multi component force detector provided in rolling resistance testing machine
DE102016209325A1 (de) * 2016-05-30 2017-11-30 Zf Friedrichshafen Ag Prüfsystem zur Prüfung des Rollwiderstands mindestens eines Fahrzeugreifens sowie ein Verfahren zur Prüfung des Rollwiderstandes des Fahrzeugreifens
CN110146306A (zh) * 2019-06-18 2019-08-20 上海钧正网络科技有限公司 一种滚动阻力测试装置及滚动阻力测试方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5191521B2 (ja) 2010-10-05 2013-05-08 株式会社神戸製鋼所 タイヤ試験機に用いられる多分力計測スピンドルユニットの校正方法
JP5735903B2 (ja) * 2010-11-29 2015-06-17 住友ゴム工業株式会社 車輪体を用いたタイヤの転がり抵抗測定方法
JP5780994B2 (ja) * 2012-03-22 2015-09-16 株式会社神戸製鋼所 タイヤ試験機の多分力計測スピンドルユニット
JP5784533B2 (ja) * 2012-03-22 2015-09-24 株式会社神戸製鋼所 タイヤ試験機の多分力計測スピンドルユニット

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997441U (ja) * 1982-12-20 1984-07-02 三菱重工業株式会社 摩擦トルク検出装置
JPS6011134A (ja) * 1983-06-29 1985-01-21 イリノイ　ツール　ワークス　インコーポレーテッド タイヤの転がり抵抗測定装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997441U (ja) * 1982-12-20 1984-07-02 三菱重工業株式会社 摩擦トルク検出装置
JPS6011134A (ja) * 1983-06-29 1985-01-21 イリノイ　ツール　ワークス　インコーポレーテッド タイヤの転がり抵抗測定装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9618416B2 (en) 2010-12-15 2017-04-11 Kobe Steel, Ltd. Method of calibrating multi component force detector provided in rolling resistance testing machine
DE102016209325A1 (de) * 2016-05-30 2017-11-30 Zf Friedrichshafen Ag Prüfsystem zur Prüfung des Rollwiderstands mindestens eines Fahrzeugreifens sowie ein Verfahren zur Prüfung des Rollwiderstandes des Fahrzeugreifens
JP2019519771A (ja) * 2016-05-30 2019-07-11 ツェットエフ、フリードリッヒスハーフェン、アクチエンゲゼルシャフトＺｆ Ｆｒｉｅｄｒｉｃｈｓｈａｆｅｎ Ａｇ 少なくとも１つの車両タイヤの転がり抵抗を試験する試験システム及び車両タイヤの転がり抵抗を試験する方法
US11035757B2 (en) 2016-05-30 2021-06-15 Zf Friedrichshafen Ag Testing system for testing the rolling resistance of at least one vehicle tire and method for testing the rolling resistance of the vehicle tire
CN110146306A (zh) * 2019-06-18 2019-08-20 上海钧正网络科技有限公司 一种滚动阻力测试装置及滚动阻力测试方法
CN110146306B (zh) * 2019-06-18 2024-02-27 上海钧正网络科技有限公司 一种滚动阻力测试装置及滚动阻力测试方法

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