JPH04181142A - Testing method for durability of tire - Google Patents
Testing method for durability of tireInfo
- Publication number
- JPH04181142A JPH04181142A JP2309996A JP30999690A JPH04181142A JP H04181142 A JPH04181142 A JP H04181142A JP 2309996 A JP2309996 A JP 2309996A JP 30999690 A JP30999690 A JP 30999690A JP H04181142 A JPH04181142 A JP H04181142A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- shaft
- tires
- treads
- contact
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 11
- 238000005498 polishing Methods 0.000 claims description 5
- 230000020169 heat generation Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明はタイヤの耐久力試験方法に関する。[Detailed description of the invention] Industrial applications The present invention relates to a tire durability testing method.
従来技術とその問題点
タイヤに、コード切れ、クラック、セパレーションなど
の傷が発生すると、ショックバーストやパンクによるブ
リーディングなど走行中のアクシデントとなり、このよ
うなアクシデントを未然に妨ぐためにタイヤの耐久力試
験は重要である。Conventional technology and its problems When a tire is damaged, such as a broken cord, crack, or separation, it can lead to an accident while driving, such as shock burst or bleeding due to a puncture.In order to prevent such accidents, tire durability tests are carried out. is important.
従来一般にタイヤの耐久力試験は、第３図に概略的に示
すように、０．５〜５．０ｍ径程度の剛性ドラム（ａ）
（例えば鋼鉄製）を回転させ、該ドラム（ａ）の外周面
にタイヤ（ｂ）を踏面部（ｂｌ）に於いて押し付け、回
転走行させることで実施しているが、次の通りの問題点
があった。Conventionally, tire durability tests have been carried out using a rigid drum (a) with a diameter of approximately 0.5 to 5.0 m, as schematically shown in Figure 3.
This is carried out by rotating a drum (made of steel, for example), pressing a tire (b) on the tread part (bl) against the outer circumferential surface of the drum (a), and causing the drum to rotate, but there are the following problems. was there.
■ 剛性ドラム（ａ）の外周面の曲率のため、外周面と
接触するタイヤ（ｂ）の踏面部（ｂｌ）の接触部（ｂ２
）が円弧状に凹入変形し、実質的にフラットな路面との
接触で略々フラットに撓み変形する市場走行時と撓み方
が異なる。■ Due to the curvature of the outer peripheral surface of the rigid drum (a), the contact portion (b2) of the tread portion (bl) of the tire (b) that contacts the outer peripheral surface
) is deformed into an arcuate shape, which is different from when driving on the market, where it deforms into a substantially flat shape upon contact with a substantially flat road surface.
■ タイヤの踏面部は、回転走行に拘わらず実質的に摩
耗しないので、タイヤの厚さが変らず、そのためタイヤ
温度が市場走行より高くなる。- The tread surface of the tire does not wear out substantially regardless of rotational running, so the thickness of the tire does not change, which causes the tire temperature to be higher than when running on the market.
■ ■及び■の結果、タイヤの故障モードや寿命が市場
と異なったものになり易い。■ As a result of ■ and ■, the failure mode and lifespan of tires tend to differ from those in the market.
本発明はこのような従来の問題点を一掃することを目的
としてなされたものである。The present invention has been made with the aim of eliminating such conventional problems.
問題点を解決するための手段
本発明は、同一サイズの２つのタイヤを、その踏面部を
たがいに所定圧力のもとに接触させた状態で、回転走行
させながら、回転走行が所定距離に達するごとに、踏面
部をタイヤ巾方向の曲率に沿い研磨して、所定量の摩耗
を与えることを特徴とするタイヤの耐久力試験方法に係
る。Means for Solving the Problems The present invention provides a system for rotating two tires of the same size with their treads in contact with each other under a predetermined pressure until the rotation reaches a predetermined distance. This relates to a tire durability testing method characterized by polishing the tread portion along the curvature in the width direction of the tire to apply a predetermined amount of wear.
実施例
以下に本発明法の一実施状況を添附図面にもとづき説明
すると、次の通りである。EXAMPLE A state of implementation of the method of the present invention will be described below based on the accompanying drawings.
第１図は本発明試験方法の一実施状況を概略的に示す全
体図であり、耐久力試験に用いられる同一サイズの２つ
のタイヤ（１）（１”）のうち、一方タイヤ（１）は駆
動装置（２）により積極回転される駆動軸（３）上に取
付は固定されている。FIG. 1 is an overall view schematically showing the implementation status of the test method of the present invention. Among the two tires (1) (1”) of the same size used for the durability test, one tire (1) is The mounting is fixed on a drive shaft (3) which is actively rotated by a drive device (2).
他方タイヤ（１′）は、駆動軸（３）の側方に設置され
た従動軸（４）上に取付は固定され、例えば従動輪（４
）を図に矢符（５）で示す方向に往。On the other hand, the tire (1') is fixedly mounted on a driven shaft (4) installed on the side of the drive shaft (3), for example, on a driven wheel (4).
) in the direction shown by the arrow (5) in the diagram.
復動することにより、一方タイヤ（１）の踏面部（１１
）に対し、他方タイヤ（１′）の踏面部（１１’）を所
定圧力下に接触させ、又は接触により解放できるような
構成になっている。By moving backward, the tread portion (11) of the tire (1) on the one hand
), the tread surface (11') of the other tire (1') can be brought into contact with the other tire (1') under a predetermined pressure, or released by contact.
タイヤ（１）（１’）の接触部の外側方に、積極駆動の
グラインダー（６）が設置され、その外周面の研磨面（
６１）は、タイヤ（１）（１’）（７）踏面部（１１）
（１１’ ）のタイヤ巾方向の曲率に対応する曲率
をもつように凹入されている。A positively driven grinder (6) is installed on the outside of the contact area of the tires (1) (1'), and the grinding surface (
61) is the tire (1) (1') (7) tread part (11)
(11') is recessed so as to have a curvature corresponding to the curvature in the width direction of the tire.
グラインダー（６）は第２図に矢符（７）に示す方向に
往復動され、この往、復動により研磨面（６１）が、タ
イヤ（１）（１’）の踏面部（１１）（１１’）間に跨
って接触し又は接触より解放されるようになっている。The grinder (6) is reciprocated in the direction shown by the arrow (7) in FIG. 11') so as to be in contact with each other or released from contact.
グラインダー（６）はタイヤ（１）及び（１′）ごとに
それぞれ独立して備えるようにしてもよい。The grinder (6) may be provided independently for each tire (1) and (1').
試験を開始するに際しては、第１図に示すように、駆動
軸（３）と従動軸（４）とに同一サイズのタイヤ（１）
（１’）が取付は固定され、次に従動軸（３）の矢符（
５）方向に沿う往動で、タイヤ（１）の踏面部（１１）
に対しタイヤ（１′）の踏面部（１１’）が所定圧力下
に押付けられる。When starting the test, as shown in Figure 1, install tires (1) of the same size on the drive shaft (3) and driven shaft (4).
(1') is fixedly mounted, then the driven shaft (3) is marked with the arrow (
5) In forward motion along the direction, the tread portion (11) of the tire (1)
In contrast, the tread portion (11') of the tire (1') is pressed under a predetermined pressure.
押付は圧は市場走行時に見合う大きさに設定され、通常
（乗用車用〜トラックバス用の場合）は１、 Ｃ１〜
１０． ０ｋｇ／ｃＩ＃程度の範囲からタイヤの種類、
寸法などにより適宜選択決定される。The pressing force is set to a size suitable for market driving, and usually (for passenger cars to trucks and buses) is 1, C1 ~
10. Types of tires from the range of 0kg/cI#,
The selection is made as appropriate depending on the dimensions and the like.
この押付は圧でタイヤ（１）（１’）の踏面部（１１）
（ＩＩ′）の接触部（１２）は、第２図に示されるよう
に、タイヤゴム層の可撓性により、あたかも実走行時の
如く撓み合い、市場走行と略々同じ条件設定が可能にな
る。This pressing is caused by pressure on the tread surface (11) of the tire (1) (1').
As shown in Fig. 2, the contact portion (12) of (II') flexes with each other as if it were in actual driving due to the flexibility of the tire rubber layer, making it possible to set almost the same conditions as in market driving. .
第１図に示す状態で、駆動装置（２）の作動をして駆動
軸−（３）を回転させると、該軸（３）上の一方タイヤ
（１）及びこれに接触する他方タイヤ（１′）は、回転
走行する。回転数は市場走行に見合う数値範囲に設定さ
れる。例えば乗用車用タイヤの場合回転走行中、走行距
離がｌｋｍに達するごとに、グラインダー（６）の作動
をして、タイヤ踏面部（１１）及び（１１’）が研磨さ
れる。In the state shown in FIG. 1, when the drive device (2) is operated to rotate the drive shaft (3), one tire (1) on the shaft (3) and the other tire (1) in contact with this ') rotates. The rotation speed is set within a numerical range suitable for market driving. For example, in the case of a passenger car tire, the grinder (6) is activated to grind the tire tread portions (11) and (11') every time the travel distance reaches 1km during rotation.
研磨量は走行距離に見合う量とされ、経験則より得られ
たデータが適用される。タイヤの種類、寸法などにもよ
るが、乗用車用タイヤでは、１万一の場合で、ゴム厚が
ｌｌｌ１ｍ程度減少される。The amount of polishing is determined to be commensurate with the distance traveled, and data obtained from empirical rules is applied. Although it depends on the type and size of the tire, in the case of tires for passenger cars, the rubber thickness is reduced by about 1 meter in some cases.
踏面部（１１）及び（１１’）の研磨は、タイヤ巾方向
の曲率に沿って均一に行うことが必要であり、この目的
のために、図示の実施例では、踏面部と同じ曲率で凹入
された研磨面（６１）を外周面に有するグラインダー（
６）が用いられている。It is necessary to polish the tread portions (11) and (11') uniformly along the curvature in the width direction of the tire, and for this purpose, in the illustrated embodiment, a concave portion is polished with the same curvature as the tread portion. A grinder (
6) is used.
研磨時に於けるタイヤの回転走行速度は特に制限はなく
、市場走行速度維持及び減速のいずれでもよい。研磨量
の測定は、例えば溝の深さを基準にして行なえばよい。There is no particular restriction on the rotation speed of the tire during polishing, and it may be maintained at the market speed or decelerated. The amount of polishing may be measured based on, for example, the depth of the groove.
回転走行中、走行距離が所定距離に達するごとに、走行
距離に応じた摩耗が与えられるので、タイヤ内の温度は
走行距離ひいては摩耗度に応じ刻々変化し発熱による材
料物性への影響を、市場走行に近づけることができる。During rotation, each time the running distance reaches a predetermined distance, wear is applied according to the running distance, so the temperature inside the tire changes every moment according to the running distance and the degree of wear. You can get close to driving.
効 果 本発明によれば、次の通りの効果が得られる。effect According to the present invention, the following effects can be obtained.
■ 所定圧力のもとに接触された同一サイズの２つのタ
イヤの踏面部は、たがいに撓み合うので、あたかも道路
を走行しているが如くの撓みを踏面部に与えながらタイ
ヤを回転走行させることが可能となり、市場走行を再現
できる。■ Since the treads of two tires of the same size that are brought into contact under a predetermined pressure flex against each other, the tires can be rotated while applying flexure to the treads as if they were running on a road. This makes it possible to reproduce market driving.
■ 市場走行に応じた摩耗を踏面部に与えながらタイヤ
を回転走行させるので、タイヤ発熱を市場走行のそれに
可及的に近づけることができる。- Since the tire is rotated while applying wear to the tread portion corresponding to market driving, the tire heat generation can be made as close as possible to that of market driving.
■ ■及び■の結果、故障モード、材料物性の低下及び
タイヤ寿命は市場を反映したものとなり、試験性能を向
上できる。例えば乗用車用ラジアルタイヤの例では、第
３図に示した従来法では、３万一の走行で、スチールと
ゴム層との接着界面で剥離が認められ、−古本発明法で
は、６万一以上の走行でゴム層同士の接着界面で剥離が
認められ、これは故障モードとして市場走行に近似し、
市場走行を反映した試験結果となる。■ As a result of (■) and (2), failure modes, deterioration of material properties, and tire life reflect the market, and test performance can be improved. For example, in the case of a radial tire for a passenger car, with the conventional method shown in Figure 3, peeling was observed at the adhesive interface between the steel and rubber layer after 30,000 runs, and with the used invention method, peeling was observed after 60,000 runs. Peeling was observed at the adhesive interface between the rubber layers during driving, and this is a failure mode similar to that seen in market driving.
The test results reflect market driving.
第１図は本発明法の一実施状況を概略的に示す全体図、
第２図は第１図の平面図、第３図は従来法の説明図であ
る。
図に於て、（１）（１’）は同一サイズのタイヤ、（２
）は駆動装置、（３）は駆動軸、（４）は従動輪、（６
）はグラインダー、である。
（以 上）
第１図
第２図
第３図FIG. 1 is an overall diagram schematically showing one implementation situation of the method of the present invention;
FIG. 2 is a plan view of FIG. 1, and FIG. 3 is an explanatory diagram of the conventional method. In the figure, (1) (1') are tires of the same size, (2
) is the drive device, (3) is the drive shaft, (4) is the driven wheel, (6
) is a grinder. (That's all) Figure 1 Figure 2 Figure 3
Claims (1)
いに所定圧力のもとに接触させた状態で、回転走行させ
ながら、回転走行が所定距離に達するごとに、踏面部を
タイヤ巾方向の曲率に沿い研磨して、所定量の摩耗を与
えることを特徴とするタイヤの耐久力試験方法。(1) While rotating two tires of the same size with their treads in contact with each other under a predetermined pressure, each time the rotation reaches a predetermined distance, rotate the tread in the tire width direction. A tire durability testing method characterized by applying a predetermined amount of wear by polishing along the curvature of a tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2309996A JPH04181142A (en) | 1990-11-14 | 1990-11-14 | Testing method for durability of tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2309996A JPH04181142A (en) | 1990-11-14 | 1990-11-14 | Testing method for durability of tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04181142A true JPH04181142A (en) | 1992-06-29 |
Family
ID=17999887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2309996A Pending JPH04181142A (en) | 1990-11-14 | 1990-11-14 | Testing method for durability of tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04181142A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6810726B2 (en) * | 2002-01-24 | 2004-11-02 | Honda Giken Kogyo Kabushiki Kaisha | Wheel durability test equipment |
| KR100489266B1 (en) * | 1998-11-11 | 2005-08-12 | 한국타이어 주식회사 | Tire bead durability test device |
| JP2010133796A (en) * | 2008-12-03 | 2010-06-17 | Sumitomo Rubber Ind Ltd | Durability testing method for pneumatic tire |
| US9421748B2 (en) | 2011-12-29 | 2016-08-23 | Compagnie Generale Des Etablissements Michelin | Tire operating surface for tire testing road wheel |
| US9581525B2 (en) | 2012-09-30 | 2017-02-28 | Compagnie Generale Des Etablissements Michelin | Method of applying particulate material along a tire footprint during tire testing on a tire testing surface |
| US9702789B2 (en) | 2012-10-31 | 2017-07-11 | Compagnie Generale Des Etablissements Michelin | Method and apparatus for distributing particulate material along a tire footprint during tire test |
| CN108195700A (en) * | 2017-12-26 | 2018-06-22 | 重庆程顺汽车配件制造有限公司 | Tire wear test structure and its manufacturing method |
| CN116735663A (en) * | 2023-08-15 | 2023-09-12 | 菏泽天盈新能源有限公司 | Performance testing device for new energy automobile tire |
-
1990
- 1990-11-14 JP JP2309996A patent/JPH04181142A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100489266B1 (en) * | 1998-11-11 | 2005-08-12 | 한국타이어 주식회사 | Tire bead durability test device |
| US6810726B2 (en) * | 2002-01-24 | 2004-11-02 | Honda Giken Kogyo Kabushiki Kaisha | Wheel durability test equipment |
| JP2010133796A (en) * | 2008-12-03 | 2010-06-17 | Sumitomo Rubber Ind Ltd | Durability testing method for pneumatic tire |
| US9421748B2 (en) | 2011-12-29 | 2016-08-23 | Compagnie Generale Des Etablissements Michelin | Tire operating surface for tire testing road wheel |
| US9581525B2 (en) | 2012-09-30 | 2017-02-28 | Compagnie Generale Des Etablissements Michelin | Method of applying particulate material along a tire footprint during tire testing on a tire testing surface |
| US9702789B2 (en) | 2012-10-31 | 2017-07-11 | Compagnie Generale Des Etablissements Michelin | Method and apparatus for distributing particulate material along a tire footprint during tire test |
| CN108195700A (en) * | 2017-12-26 | 2018-06-22 | 重庆程顺汽车配件制造有限公司 | Tire wear test structure and its manufacturing method |
| CN108195700B (en) * | 2017-12-26 | 2020-04-24 | 重庆程顺汽车配件制造有限公司 | Tire wear test structure and manufacturing method thereof |
| CN116735663A (en) * | 2023-08-15 | 2023-09-12 | 菏泽天盈新能源有限公司 | Performance testing device for new energy automobile tire |
| CN116735663B (en) * | 2023-08-15 | 2023-11-07 | 菏泽天盈新能源有限公司 | Performance testing device for new energy automobile tire |
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