DE3411584A1 - Measuring instrument for measuring the contact pressure distribution of vehicle tyres of all types under different operating conditions - Google Patents
Measuring instrument for measuring the contact pressure distribution of vehicle tyres of all types under different operating conditionsInfo
- Publication number
- DE3411584A1 DE3411584A1 DE19843411584 DE3411584A DE3411584A1 DE 3411584 A1 DE3411584 A1 DE 3411584A1 DE 19843411584 DE19843411584 DE 19843411584 DE 3411584 A DE3411584 A DE 3411584A DE 3411584 A1 DE3411584 A1 DE 3411584A1
- Authority
- DE
- Germany
- Prior art keywords
- measuring
- measuring device
- film
- operating conditions
- under different
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
- G01L17/005—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies using a sensor contacting the exterior surface, e.g. for measuring deformation
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tires In General (AREA)
Abstract
Description
PatentanmeldungPatent application
Meßgerät zum Messen der Aufstellkraftverteilung von Fahrzeugreifen aller Art. unter verschiedenen Betriebsbedingungen. Bei'der Beurteilung von Fahrzeugreifen ist ein Kriterium ° die Verteilung der Aufstell kraft über die gesamte Kontakt flache mit der Fahrbahn. Diese Kraftverteilung wird im folgenden mit "Kontaktprofil" bezeichnet. Das Kontaktprofil eines Reifens * ändert sich mit verschiedenen äußeren Parametern wie Belastung, -Luftdruck, Sturz, Vorspur, Geradeausfahrt·oder Kurvenfahrt, Beschaffenheit der Straßenoberflache etc. Darüberhinaus ist. es auch interessant dieses Kontaktprofil nicht nur- beim stehenden Reifen zu erfassen, sondern auch beim rotierenden Reifenmit variabler Geschwindigkeit und auch beim Beschleunigen und Abbremsen eines Fahrzeuges. Da die auf dem Markt angebotenen Geräte nur beim stehenden Reifen und nur in einem sehr groben Raster Messungen ermöglichen, wurde η a. c h einer geeigneten.Lösung gesucht, die eine kontinuierliche und lückeη 1öse Messung der Meßkraftverteilung ermöglicht. Als Meßaufnehmer dient z.B. ein Piezo-elektrischer Druckaufnehmer (1.1), der in einer Aufnahmeplatte (1.2) montiert ist. Der Meßkraftaufnehmer bildet- mit der Meßplattenoberfläche eine Ebene und steht in einem Fenster (1.3), so daß im Bereich der Meßwertaufnahme eine Kraftent.koppelung zuMeasuring device for measuring the erection force distribution of Vehicle tires of all kinds under different operating conditions. When assessing vehicle tires, one criterion is ° the distribution of the installation force over the entire contact flat with the roadway. This force distribution will be used in the following "Contact Profile" referred to. The contact profile of a tire * changes with various external parameters such as load, air pressure, camber, toe-in, straight-ahead driving or cornering, Condition of the road surface, etc. In addition, is. It is also interesting not only for this contact profile to capture stationary tires, but also with rotating tires variable speed and also when accelerating and braking a vehicle. As the ones offered on the market Devices only allow measurements with stationary tires and only in a very coarse grid, η a. c h a suitable.solution wanted a continuous and intermittent measurement of the Measuring force distribution enables. A piezoelectric pressure transducer (1.1), for example, is used as the measuring transducer Mounting plate (1.2) is mounted. The measuring force transducer forms with the surface of the measuring plate is a plane and is in a window (1.3), so that a force decoupling in the area of the measured value recording
den umliegenden Flächen erfolgt. Diese Aufnahmeplatte wird im Bereich der Aufstellfläche nach einem vorwählbaren Bewegungsschema z.B. mäanderförmig bewegt und die dabei auftretenden analogen Ausgangssignale auf ein Schreibgerät, einen Computer oder Speicheroszillographen mit Frequenzanalysator ausgegeben und nach den verschiedenen Parametern ausgeweitet. Zur Ausschaltung der Haftreibung zwischen der Meßplatte und dem Reifen wird ,zwischen Meßp'latte und Reifen eine Zu/ischenfolie (1.4) gelegt, die auf Grund ihrer Elastizität die unterschiedlichen Auf stel ldrüc.ke in den "verschiebbaren Meßkraftaufnehmer einleitet. Um die Messung'.auch, bei rotierendem Reifen durchführen zu können ist es er f Order ] ich ,·· daß die Zw ischenf öl ie als endloses Band (1.4.1) ausgebildet ist und über Umlenkrollen (1.6) läuft.the surrounding areas. This mounting plate is in Area of the installation area according to a preselectable movement pattern e.g. moved in a meandering shape and the resulting analog Output signals output to a writing instrument, computer or storage oscilloscope with frequency analyzer and after the various parameters. To eliminate the static friction between the measuring plate and the tire, between Measuring plate and tire an insert sheet (1.4) placed on the Due to their elasticity, the different pressures in initiates the "movable measuring force transducer. In order to carry out the measurement even when the tire is rotating can it is he f order] I, ·· that the dichotomy is infinite Belt (1.4.1) is formed and runs over pulleys (1.6).
■ - 2 -■ - 2 -
EPO-COPY §A EPO-COPY §A
341158A341158A
)abei ω-ird die Aufnahmeplatte (1.2.1) mit dem Druckaufnehmer (1.1.1) nach einem voru/ählbaren Bewegungsschema z.B. mäanderförmig .in '" Schritten (t) über die Breite (B) bewegt. Da nicht nur das" Kont-a_ktprpfil axif einer idealen Oberfläche von. Bedeutung ist, können auf die" Zu/ischenfolie (1.4)üachbildungen verschiedener Straßenoberflachen aufgebracht und damit das Kontaktprofil unter. ") ab with ω-Ω the mounting plate (1.2.1) with the pressure transducer (1.1.1) according to a preselectable movement scheme e.g. meandering .in '" Steps (t) across the width (B). Since not only the "Kont-a_ktprpfil axif an ideal surface of. Meaning is can on the "Zu / ischen liner (1.4) simulations of various road surfaces applied and thus the contact profile under. "
realistischen BedinöiJjDae_n_e_rfaßt \i/erden. ■ ■realistic conditions. ■ ■
■ - ,"■ -■ ' ,.-- -■-"'"""'. " ' - \ Als Antriebe können für die Auflageplatte vorzugsweise■ -, "■ - ■ ' , .-- - ■ -"'"""'."' - \ The preferred drives for the support plate are
Elektromotoren oder Hydraulik-Zylinder eingesetzt werden. ; Electric motors or hydraulic cylinders are used. ;
*>■ EPO ·■-- C OPY*> ■ EPO · ■ - C OPY
—t-—- SisJ- t - SisJ
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843411584 DE3411584A1 (en) | 1984-03-29 | 1984-03-29 | Measuring instrument for measuring the contact pressure distribution of vehicle tyres of all types under different operating conditions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843411584 DE3411584A1 (en) | 1984-03-29 | 1984-03-29 | Measuring instrument for measuring the contact pressure distribution of vehicle tyres of all types under different operating conditions |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3411584A1 true DE3411584A1 (en) | 1985-10-03 |
Family
ID=6231962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19843411584 Withdrawn DE3411584A1 (en) | 1984-03-29 | 1984-03-29 | Measuring instrument for measuring the contact pressure distribution of vehicle tyres of all types under different operating conditions |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3411584A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5088321A (en) * | 1989-11-02 | 1992-02-18 | Sumitomo Rubber Industries, Ltd. | Apparatus and method for observing the ground contact patch of a tire |
US5092166A (en) * | 1990-02-01 | 1992-03-03 | Sumitomo Rubber Industries, Ltd. | Apparatus for determining shape of contact patch and contact pressure of tires |
EP0695935A1 (en) * | 1994-06-09 | 1996-02-07 | PIRELLI COORDINAMENTO PNEUMATICI S.p.A. | Device for detecting the distribution of a specific pressure in the groundcontacting area of a motor-vehicle tyre, and detection method carried out thereby |
-
1984
- 1984-03-29 DE DE19843411584 patent/DE3411584A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5088321A (en) * | 1989-11-02 | 1992-02-18 | Sumitomo Rubber Industries, Ltd. | Apparatus and method for observing the ground contact patch of a tire |
US5092166A (en) * | 1990-02-01 | 1992-03-03 | Sumitomo Rubber Industries, Ltd. | Apparatus for determining shape of contact patch and contact pressure of tires |
EP0695935A1 (en) * | 1994-06-09 | 1996-02-07 | PIRELLI COORDINAMENTO PNEUMATICI S.p.A. | Device for detecting the distribution of a specific pressure in the groundcontacting area of a motor-vehicle tyre, and detection method carried out thereby |
US5641900A (en) * | 1994-06-09 | 1997-06-24 | Pirelli Coordinamento Pneumatici S.P.A. | Device for analysis of tire ground contact pressure |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |