WO2007128623A1 - Pneumatic vehicle tyre for heavy goods vehicle with four-ply belt - Google Patents

Pneumatic vehicle tyre for heavy goods vehicle with four-ply belt Download PDF

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Publication number
WO2007128623A1
WO2007128623A1 PCT/EP2007/052893 EP2007052893W WO2007128623A1 WO 2007128623 A1 WO2007128623 A1 WO 2007128623A1 EP 2007052893 W EP2007052893 W EP 2007052893W WO 2007128623 A1 WO2007128623 A1 WO 2007128623A1
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Prior art keywords
belt
steel cords
circumferential direction
ply
angle
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PCT/EP2007/052893
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German (de)
French (fr)
Inventor
Wilfried Carl
Alexander Dombrowski
Original Assignee
Continental Aktiengesellschaft
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Publication of WO2007128623A1 publication Critical patent/WO2007128623A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
    • B60C9/2006—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords consisting of steel cord plies only

Definitions

  • the invention relates to a radial type vehicle pneumatic tire for heavy-duty vehicles with a four-ply belt, each belt ply containing steel cords as strength members extending parallel to each other in each belt ply, the inclination of the steel cords toward the circumferential direction starting at the first, radially innermost belt ply, the right-hand sequence Right-Left-Right follows and the angle which the steel cords in the first belt ply with the circumferential direction encloses is between 50 ° and 65 ° and the angle which the steel cords enclose in the second and in the third belt ply with the circumferential direction. each between 16 ° and 20 °.
  • the design of the belt construction has a significant influence on the wear pattern of non-driven truck tires, especially when they are used in long-distance transport with a very large proportion of straight-line.
  • Typical is, for example, the use of a so-called diamond belt with typically four layers, the steel cords enclose with the circumferential direction of the tire an angle of 16 ° to 20 ° and the layers are placed so that the steel cords intersect alternately.
  • Another typical belt for truck tires is the so-called triangle belt with four layers, the steel cords in the first, radially innermost belt layer a
  • angles of 50 ° to 65 ° with the circumferential direction It is also common for the orientation of the steel cords in the individual belt plies to be referred to the circumferential direction with R for a right slope and L for a left slope.
  • a typical sequence is RRLL with an angle of, for example, 50 ° in the first (radially innermost) belt ply and an angle of 18 ° in the other
  • this sequence is more advantageous than a sequence RRLR with the same great angulation of the steel cords. From studies it is known that the sequence RRLL has a more favorable for the tread material deformation of the belt package in the circumferential direction when passing through the ground contact surface during the rolling of the tire result.
  • a tire in which the steel cords are arranged in the four belt plies in the sequence RRLL is known, for example, from EP 0 730 987 B1.
  • the angle enclosed by the steel cords in the first belt ply with the tire circumferential direction is between 35 ° and 80 °, the angles between the cords in the second and third belt ply with the circumferential direction are between 15 ° and 30 °, and the angle, the the
  • Steel cord in the fourth belt ply with the circumferential direction is selected in the range of +/- 5 ° of the angle of the steel cords in the third belt ply.
  • the ply strengths of the individual belt layers are in certain relationships. Here it is in the foreground to improve the breaking strength of the belt without increasing the tire weight.
  • the invention has for its object to perform a truck tire of the type mentioned with a four-ply belt such that the still occurring in the known tires disproportionate shoulder abrasion is reduced and the emergence of freewheel grooves is significantly delayed.
  • the angle which the steel cords include in the fourth belt layer with the circumferential direction is between 50 ° and 90 °.
  • Truck tires with a four-layered belt of the sequence RRLR of the steel cords in the belt layers thus produced show a significantly improved abrasion pattern in use as steering axle tires in long-distance traffic, with a very large proportion of straight-line running.
  • the occurrence of abrasion in the shoulder regions is markedly lower and the formation of freewheel grooves occurs much later than in the case of tires which are designed according to the prior art.
  • the cause of the achievable reduction in shoulder abrasion and the resulting delay in the generation of freewheel grooves is believed to be the very large angle that the steel cords in the fourth radially outermost belt ply enclose with the circumferential direction.
  • the achievable abrasion improvement reaches an optimum when the angle that the
  • Include steel cords in the fourth belt position with the circumferential direction is between 70 ° and 90 °.
  • Fig. 1 shows a partial cross section through the one half of a pneumatic vehicle tire in the region of the belt and the tread and Fig. 2 is a plan view of a variant of the belt layers.
  • FIG. 1 shows a cross-section through the tread and the belt region of a pneumatic vehicle tire for a conventional standard construction with a carcass 1 with steel cords as reinforcements, an airtight inner layer 2, a multi-ply belt 3, and a profiled tread 6.
  • the belt 3 has four belt plies 7, 8, 9 and 10, wherein the fourth, radially outermost belt ply 10 has the smallest width of all plies and forms the so-called protective ply.
  • the first belt layer 7 is the so-called blocking position
  • the second belt layer 8 and the third belt layer 9 are the so-called working positions.
  • the widest belt layer is the second belt layer 8, which therefore completely covers the first belt layer 7.
  • the third belt ply 9 is slightly wider than or equal to the width of the first belt ply 7.
  • the fourth belt ply 10 can also be made the same width as the third belt ply 9.
  • All belt layers 7, 8, 9, 10 consist of a rubber compound, the Gürtelgummtechnik, embedded reinforcements made of steel cord, for example Steel cord of construction 3 x 0.2 mm + 6 x 0.35 mm.
  • steel cord of construction 3 x 0.2 mm + 6 x 0.35 mm for example Steel cord of construction 3 x 0.2 mm + 6 x 0.35 mm.
  • the steel cords in each of the layers 7, 8, 9 and 10 are parallel to one another and enclose angles ⁇ , ⁇ , ⁇ and ⁇ with the circumferential direction of the tire indicated by the line A-A.
  • the inclination of the steel cords to the circumferential direction in the individual belt plies 7, 8, 9, 10, starting at the radially innermost belt ply 7, is such that the sequence RRLR (right-right-left-right) is present.
  • the steel cords in the first, second and fourth belt plies 7, 8 and 10 are inclined to the right with respect to the circumferential direction A-A.
  • the angle ⁇ enclosed by the steel cords of the first belt ply 7 in the circumferential direction AA is between 50 ° and 65 °
  • the angle ⁇ enclosed by the steel cords in the second belt ply 8 with the circumferential direction is between 16 ° and 20 °
  • the angle ⁇ which the steel cords enclose in the fourth belt ply 10 with the circumferential direction AA is selected between 50 ° and 90 °, in particular between 70 ° and 90 °.
  • the steel cords in the third belt ply 9 are inclined to the left in the direction opposite to the circumferential direction A-A of the tire, and include an angle ⁇ with the circumferential direction A-A selected between 16 ° and 20 °.
  • the angle ⁇ is preferably selected from its size or its amount so that it corresponds to the angle ⁇ .
  • Truck radial tires with inventively angled steel cords in the belt plies have, especially when used as Lenkachs adopted in long-distance traffic, a significantly improved abrasion pattern in the shoulder areas, and occur freewheel grooves over tires with a conventional angulation of steel cords in the belt layers much later, after a greater mileage, up.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

The invention relates to a pneumatic vehicle tyre of a radial design for heavy goods vehicles with a four-ply belt (3), wherein each belt ply (7, 8, 9, 10) contains steel cords as reinforcing elements, which respectively extend parallel to one another in each belt ply (7, 8, 9, 10), wherein the inclination of the steel cords in relation to the circumferential direction (A-A), beginning with the first, radially innermost belt ply (7), follows the sequence right-right-left-right, and the angle (a) that the steel cords form with the circumferential direction (A-A) in the first belt ply (7) is between 50° and 65° and the angles (b, g) that the steel cords form with the circumferential direction (A-A) in the second and third belt plies (8, 9) are in each case between 16° and 20°. In order to reduce disproportionate shoulder abrasion and significantly delay the occurrence of tramline wear, it is provided that the angle (d) that the steel cords form with the circumferential direction (A-A) in the fourth belt ply (10) is between 50° and 90°.

Description

Beschreibungdescription
FAHRZEUGLUFTREIFEN FÜR SCHWERLASTFAHRZEUG MIT VIERLAGIGEM GÜRTELVEHICLE AIR TIRES FOR HEAVY DUTY VEHICLES WITH FOUR-LATCH BELT
Die Erfindung betrifft einen Fahrzeugluftreifen in Radialbauart für Schwerlastfahrzeuge mit einem vierlagigen Gürtel, wobei jede Gürtellage als Festigkeitsträger Stahlcorde enthält, die in jeder Gürtellage jeweils parallel zueinander verlaufen, wobei die Neigung der Stahlcorde zur Umfangsrichtung beginnend bei der ersten, radial innersten Gürtellage, der Abfolge Rechts-Rechts-Links-Rechts folgt und der Winkel, den die Stahlcorde in der ersten Gürtellage mit der Umfangsrichtung einschließen, zwischen 50° und 65° beträgt und die Winkel, den die Stahlcorde in der zweiten und in der dritten Gürtellage mit der Umfangsrichtung einschließen, jeweils zwischen 16° und 20° betragen.The invention relates to a radial type vehicle pneumatic tire for heavy-duty vehicles with a four-ply belt, each belt ply containing steel cords as strength members extending parallel to each other in each belt ply, the inclination of the steel cords toward the circumferential direction starting at the first, radially innermost belt ply, the right-hand sequence Right-Left-Right follows and the angle which the steel cords in the first belt ply with the circumferential direction encloses is between 50 ° and 65 ° and the angle which the steel cords enclose in the second and in the third belt ply with the circumferential direction. each between 16 ° and 20 °.
Es ist bekannt, dass die Auslegung der Gürtelkonstruktion maßgeblichen Einfluss auf das Abriebbild von nicht angetriebenen LKW-Reifen nimmt, insbesondere wenn diese im Fernverkehr mit einem sehr großen Anteil an Geradeauslauf eingesetzt werden. Üblich ist beispielsweise die Verwendung eines sogenannten Rautengürtels mit typischerweise vier Lagen, deren Stahlcorde mit der Umfangsrichtung des Reifens einen Winkel von 16° bis 20° einschließen und die Lagen derart aufgelegt sind, dass sich die Stahlcorde abwechselnd kreuzen. Ein weiterer typischer Gürtel für LKW-Reifen ist der sogenannte Dreiecksgürtel mit vier Lagen, wobei die Stahlcorde in der ersten, radial innersten Gürtellage einenIt is known that the design of the belt construction has a significant influence on the wear pattern of non-driven truck tires, especially when they are used in long-distance transport with a very large proportion of straight-line. Typical is, for example, the use of a so-called diamond belt with typically four layers, the steel cords enclose with the circumferential direction of the tire an angle of 16 ° to 20 ° and the layers are placed so that the steel cords intersect alternately. Another typical belt for truck tires is the so-called triangle belt with four layers, the steel cords in the first, radially innermost belt layer a
Winkel von 50° bis 65° mit der Umfangsrichtung einschließen. Es ist ferner üblich, dass die Orientierung der Stahlcorde in den einzelnen Gürtellagen zur Umfangsrichtung mit R für eine Neigung nach Rechts und mit L für eine Neigung nach Links bezeichnet wird. Eine typische Abfolge ist RRLL mit einem Winkel von beispielsweise 50° in der ersten (radial innersten) Gürtellage und einem Winkel von jeweils 18° in den anderenInclude angles of 50 ° to 65 ° with the circumferential direction. It is also common for the orientation of the steel cords in the individual belt plies to be referred to the circumferential direction with R for a right slope and L for a left slope. A typical sequence is RRLL with an angle of, for example, 50 ° in the first (radially innermost) belt ply and an angle of 18 ° in the other
Gürtellagen, wobei diese Abfolge vorteilhafter ist, als eine Abfolge RRLR mit gleich großer Winkelung der Stahlcorde. Aus Untersuchungen ist es bekannt, dass die Abfolge RRLL eine für das Laufstreifenmaterial günstigere Deformation des Gürtelpaketes in Umfangsrichtung beim Durchgang durch die Bodenaufstandsfläche während des Abrollens des Reifens zur Folge hat.Belt layers, this sequence is more advantageous than a sequence RRLR with the same great angulation of the steel cords. From studies it is known that the sequence RRLL has a more favorable for the tread material deformation of the belt package in the circumferential direction when passing through the ground contact surface during the rolling of the tire result.
Ein Reifen, bei dem die Stahlcorde in den vier Gürtellagen in der Abfolge RRLL angeordnet sind, ist beispielsweise aus der EP 0 730 987 Bl bekannt. Der Winkel, den die Stahlcorde in der ersten Gürtellage mit der Reifenumfangsrichtung einschließen, beträgt zwischen 35° und 80°, die Winkel, die die Corde in der zweiten und dritten Gürtellage mit der Umfangsrichtung einschließen, zwischen 15° und 30° und der Winkel, den dieA tire in which the steel cords are arranged in the four belt plies in the sequence RRLL is known, for example, from EP 0 730 987 B1. The angle enclosed by the steel cords in the first belt ply with the tire circumferential direction is between 35 ° and 80 °, the angles between the cords in the second and third belt ply with the circumferential direction are between 15 ° and 30 °, and the angle, the the
Stahlcorde in der vierten Gürtellage mit der Umfangsrichtung einschließt, wird im Bereich von +/- 5° des Winkels der Stahlcorde in der dritten Gürtellage gewählt. Darüber hinaus stehen die Lagenfestigkeiten der einzelnen Gürtellagen in bestimmten Beziehungen zueinander. Hier steht es im Vordergrund, die Bruchfestigkeit des Gürtels zu verbessern ohne das Reifengewicht zu erhöhen.Steel cord in the fourth belt ply with the circumferential direction is selected in the range of +/- 5 ° of the angle of the steel cords in the third belt ply. In addition, the ply strengths of the individual belt layers are in certain relationships. Here it is in the foreground to improve the breaking strength of the belt without increasing the tire weight.
Der Erfindung liegt die Aufgabe zugrunde, einen LKW-Reifen der eingangs genannten Art mit einem vierlagigen Gürtel derart auszuführen, dass der bei den bekannten Reifen nach wie vor auftretende überproportionale Schulterabrieb vermindert wird sowie das Entstehen von Freilaufrillen deutlich verzögert ist.The invention has for its object to perform a truck tire of the type mentioned with a four-ply belt such that the still occurring in the known tires disproportionate shoulder abrasion is reduced and the emergence of freewheel grooves is significantly delayed.
Gelöst wird die gestellte Aufgabe erfindungsgemäß dadurch, dass der Winkel, den die Stahlcorde in der vierten Gürtellage mit der Umfangsrichtung einschließen, zwischen 50° und 90° beträgt.The object is achieved according to the invention in that the angle which the steel cords include in the fourth belt layer with the circumferential direction is between 50 ° and 90 °.
LKW-Reifen mit einem derart ausgeführten vierlagigen Gürtel der Abfolge RRLR der Stahlcorde in den Gürtellagen zeigen im Einsatz als Lenkachsreifen im Fernverkehr, mit einem sehr großen Anteil an Geradeauslauf, ein deutlich verbessertes Abriebsbild. Insbesondere ist bei erfindungsgemäßen Reifen die Ausprägung von Abrieberscheinung in den Schulterbereichen deutlich geringer und die Ausbildung von Freilaufrillen tritt wesentlich später auf, als bei Reifen, die gemäß dem Stand der Technik ausgeführt sind. Ursache der erzielbaren Verringerung des Schulterabriebes und eintretenden Verzögerung des Entstehens von Freilaufrillen dürfte der sehr große Winkel sein, den die Stahlcorde in der vierten, radial äußersten Gürtellage, mit der Umfangsrichtung einschließen.Truck tires with a four-layered belt of the sequence RRLR of the steel cords in the belt layers thus produced show a significantly improved abrasion pattern in use as steering axle tires in long-distance traffic, with a very large proportion of straight-line running. In particular, in the case of tires according to the invention, the occurrence of abrasion in the shoulder regions is markedly lower and the formation of freewheel grooves occurs much later than in the case of tires which are designed according to the prior art. The cause of the achievable reduction in shoulder abrasion and the resulting delay in the generation of freewheel grooves is believed to be the very large angle that the steel cords in the fourth radially outermost belt ply enclose with the circumferential direction.
Die erzielbare Abriebsverbesserung erreicht ein Optimum, wenn der Winkel, den dieThe achievable abrasion improvement reaches an optimum when the angle that the
Stahlcorde in der vierten Gürtellage mit der Umfangsrichtung einschließen, zwischen 70° und 90° beträgt.Include steel cords in the fourth belt position with the circumferential direction is between 70 ° and 90 °.
Weitere Merkmale, Vorteile und Einzelheiten der Erfindung werden nun anhand der Zeichnung, die schematisch ein Ausführungsbeispiel darstellt, näher beschrieben. Dabei zeigenFurther features, advantages and details of the invention will now be described with reference to the drawing, which schematically illustrates an embodiment. Show
Fig.1 einen Teilquerschnitt durch die eine Hälfte eine Fahrzeugluftreifens im Bereich des Gürtels und des Laufstreifens und Fig. 2 eine Draufsicht auf eine Ausführungsvariante der Gürtellagen.1 shows a partial cross section through the one half of a pneumatic vehicle tire in the region of the belt and the tread and Fig. 2 is a plan view of a variant of the belt layers.
Fig. 1 zeigt einen Querschnitt durch den Laufstreifen und den Gürtelbereich eines Fahrzeugluftreifens für Lastkraftwagen in einer üblichen Standardkonstruktion mit einer Karkasse 1 mit Stahlcorden als Festigkeitsträgern, einer luftdichten Innenschicht 2, einem mehrlagigen Gürtel 3, und einem profilierten Laufstreifen 6.1 shows a cross-section through the tread and the belt region of a pneumatic vehicle tire for a conventional standard construction with a carcass 1 with steel cords as reinforcements, an airtight inner layer 2, a multi-ply belt 3, and a profiled tread 6.
Der Gürtel 3 weist vier Gürtellagen 7, 8, 9 und 10 auf, wobei die vierte, radial äußerste Gürtellage 10 die geringste Breite von allen Lagen aufweist und die sogenannte Schutzlage bildet. Die erste Gürtellage 7 ist die sogenannte Sperrlage, die zweite Gürtellage 8 und die dritte Gürtellage 9 sind die sogenannten Arbeitslagen. Die breiteste Gürtellage ist die zweite Gürtellage 8, welche demnach die erste Gürtellage 7 komplett überdeckt. Die dritte Gürtellage 9 ist etwas breiter als oder gleich breit wie die erste Gürtellage 7. Die vierte Gürtellage 10 kann ferner gleich breit wie die dritte Gürtellage 9 ausgeführt sein. Sämtliche Gürtellagen 7, 8, 9, 10 bestehen aus in eine Gummimischung, der Gürtelgummierung, eingebetteten Festigkeitsträgern aus Stahlcord, beispielsweise Stahlcord der Konstruktion 3 x 0,2 mm + 6 x 0,35 mm. Selbstverständlich können in den Gürtellagen auch Stahlcorde anderer Konstruktionen eingesetzt werden.The belt 3 has four belt plies 7, 8, 9 and 10, wherein the fourth, radially outermost belt ply 10 has the smallest width of all plies and forms the so-called protective ply. The first belt layer 7 is the so-called blocking position, the second belt layer 8 and the third belt layer 9 are the so-called working positions. The widest belt layer is the second belt layer 8, which therefore completely covers the first belt layer 7. The third belt ply 9 is slightly wider than or equal to the width of the first belt ply 7. The fourth belt ply 10 can also be made the same width as the third belt ply 9. All belt layers 7, 8, 9, 10 consist of a rubber compound, the Gürtelgummierung, embedded reinforcements made of steel cord, for example Steel cord of construction 3 x 0.2 mm + 6 x 0.35 mm. Of course, in the belt layers and steel cords of other constructions can be used.
Wie Fig. 2 zeigt verlaufen die Stahlcorde in jeder der Lagen 7, 8, 9 und 10 jeweils parallel zueinander und schließen mit der durch die Linie A-A angedeuteten Umfangsrichtung des Reifens Winkel α, ß, γ und δ ein. Die Neigung der Stahlcorde zur Umfangsrichtung in den einzelnen Gürtellagen 7, 8, 9, 10, beginnend bei der radial innersten Gürtellage 7, ist derart, dass die Abfolge RRLR (Rechts-Rechts-Links-Rechts) vorliegt. Bei einem erfindungsgemäß ausgelegten vierlagigen Gürtel sind daher die Stahlcorde in der ersten, der zweiten und der vierten Gürtellage 7, 8 und 10 bezüglich der Umfangsrichtung A-A nach rechts geneigt. Der Winkel α, den die Stahlcorde der ersten Gürtellage 7 mit der Umfangsrichtung A-A einschließen, beträgt zwischen 50° und 65°, der Winkel ß, den die Stahlcorde in der zweiten Gürtellage 8 mit der Umfangsrichtung einschließen, beträgt zwischen 16° und 20°, der Winkel δ, den die Stahlcorde in der vierten Gürtellage 10 mit der Umfangsrichtung A-A einschließen, wird zwischen 50° und 90°, insbesondere zwischen 70° und 90°, gewählt. Die Stahlcorde in der dritten Gürtellage 9 sind gegenüber der Umfangsrichtung A-A des Reifens in die andere Richtung, nach links geneigt und schließen einen Winkel γ mit der Umfangsrichtung A-A ein, der zwischen 16° und 20° gewählt wird. Der Winkel ß wird vorzugsweise von seiner Größe bzw. seinem Betrag her so gewählt, dass er dem Winkel γ entspricht.As shown in Figure 2, the steel cords in each of the layers 7, 8, 9 and 10 are parallel to one another and enclose angles α, β, γ and δ with the circumferential direction of the tire indicated by the line A-A. The inclination of the steel cords to the circumferential direction in the individual belt plies 7, 8, 9, 10, starting at the radially innermost belt ply 7, is such that the sequence RRLR (right-right-left-right) is present. In a four-ply belt designed according to the present invention, therefore, the steel cords in the first, second and fourth belt plies 7, 8 and 10 are inclined to the right with respect to the circumferential direction A-A. The angle α enclosed by the steel cords of the first belt ply 7 in the circumferential direction AA is between 50 ° and 65 °, the angle β enclosed by the steel cords in the second belt ply 8 with the circumferential direction is between 16 ° and 20 °, the angle δ which the steel cords enclose in the fourth belt ply 10 with the circumferential direction AA is selected between 50 ° and 90 °, in particular between 70 ° and 90 °. The steel cords in the third belt ply 9 are inclined to the left in the direction opposite to the circumferential direction A-A of the tire, and include an angle γ with the circumferential direction A-A selected between 16 ° and 20 °. The angle β is preferably selected from its size or its amount so that it corresponds to the angle γ.
Für erfindungsgemäß ausgeführte Reifen können die Winkel α, ß, γ und δ in den einzelnen Gürtellagen 7, 8, 9 und 10 beispielsweise folgende Größen aufweisen: α = 50°, ß = 18°, γ = 18°, δ = 70° oder α = 50°, ß = 18°, γ = 18°, δ = 90°For tires designed according to the invention, the angles α, β, γ and δ in the individual belt plies 7, 8, 9 and 10 may have the following sizes, for example: α = 50 °, β = 18 °, γ = 18 °, δ = 70 ° or α = 50 °, β = 18 °, γ = 18 °, δ = 90 °
LKW-Radialreifen mit erfindungsgemäß gewinkelten Stahlcorden in den Gürtellagen weisen, insbesondere wenn sie als Lenkachsreifen im Fernverkehr eingesetzt werden, ein wesentlich verbessertes Abriebsbild in den Schulterbereichen auf, und es treten Freilaufrillen gegenüber Reifen mit einer herkömmlichen Winkelung der Stahlcorde in den Gürtellagen wesentlich später, nach einer größeren Laufleistung, auf. Truck radial tires with inventively angled steel cords in the belt plies have, especially when used as Lenkachsreifen in long-distance traffic, a significantly improved abrasion pattern in the shoulder areas, and occur freewheel grooves over tires with a conventional angulation of steel cords in the belt layers much later, after a greater mileage, up.

Claims

PATENTANSPRÜCHE
1. Fahrzeugluftreifen in Radialbauart für Schwerlastfahrzeuge mit einem vierlagigen1. Pneumatic radial tire for heavy duty vehicles with a four-ply
Gürtel (3), wobei jede Gürtellage (7, 8, 9, 10) als Festigkeitsträger Stahlcorde enthält, die in jeder Gürtellage (7, 8, 9, 10) jeweils parallel zueinander verlaufen, wobei die Neigung der Stahlcorde zur Umfangsrichtung (A-A) beginnend bei der ersten, radial innersten Gürtellage (7), der Abfolge Rechts-Rechts-Links-Rechts folgt und der Winkel (α), den die Stahlcorde in der ersten Gürtellage (7) mit derBelt (3), wherein each belt ply (7, 8, 9, 10) contains steel cords as a strength carrier, which run parallel to each other in each belt ply (7, 8, 9, 10), the inclination of the steel cord to the circumferential direction (AA) starting at the first, radially innermost belt layer (7), the sequence right-right-left-right follows and the angle (α), the steel cords in the first belt layer (7) with the
Umfangsrichtung (A-A) einschließen, zwischen 50° und 65° beträgt und die Winkel (ß, γ), welche die Stahlcorde in der zweiten und in der dritten Gürtellage (8, 9) mit der Umfangsrichtung (A-A) einschließen, jeweils zwischen 16° und 20° betragen, d a d u r c h g e k e n n z e i c h n e t, dass der Winkel (δ), den die Stahlcorde in der vierten Gürtellage (10) mit der Umfangsrichtung (A-A) einschließen, zwischen 50° und 90° beträgt.Include circumferential direction (AA), between 50 ° and 65 ° and the angle (ß, γ), which include the steel cords in the second and in the third belt layer (8, 9) with the circumferential direction (AA), each between 16 ° and 20 °, characterized in that the angle (δ) enclosed by the steel cords in the fourth belt ply (10) with the circumferential direction (AA) is between 50 ° and 90 °.
2. Fahrzeugluftreifen nach Anspruch 1, dadurch gekennzeichnet, dass der Winkel (δ), den die Stahlcorde in der vierten Gürtellage (10) mit der Umfangsrichtung (A-A) einschließen, zwischen 70° und 90° beträgt. A pneumatic vehicle tire according to claim 1, characterized in that the angle (δ) formed by the steel cords in the fourth belt ply (10) with the circumferential direction (A-A) is between 70 ° and 90 °.
PCT/EP2007/052893 2006-05-05 2007-03-27 Pneumatic vehicle tyre for heavy goods vehicle with four-ply belt WO2007128623A1 (en)

Applications Claiming Priority (2)

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DE102006020933.8 2006-05-05
DE200610020933 DE102006020933A1 (en) 2006-05-05 2006-05-05 Vehicle tires

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112078306A (en) * 2020-08-07 2020-12-15 山东玲珑轮胎股份有限公司 Tire and belted layer design structure
EP3473453B1 (en) * 2016-06-20 2021-05-05 Bridgestone Corporation Heavy duty pneumatic tire
JP7560293B2 (en) 2020-08-31 2024-10-02 Ｔｏｙｏ Ｔｉｒｅ株式会社 Heavy duty pneumatic tires

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011054975A1 (en) * 2011-11-01 2013-05-02 Continental Reifen Deutschland Gmbh Vehicle tires
DE102015222447A1 (en) * 2015-11-13 2017-05-18 Continental Reifen Deutschland Gmbh Vehicle tires

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014542A1 (en) * 1979-01-31 1980-08-20 Sumitomo Rubber Industries Limited Tyres for trucks and buses
JP2000177314A (en) * 1998-12-18 2000-06-27 Bridgestone Corp Pneumatic radial tire for heavy load
US20060032570A1 (en) * 2003-02-17 2006-02-16 Michelin Recherche Et Technique, S.A. Crown reinforcement for a radial tire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014542A1 (en) * 1979-01-31 1980-08-20 Sumitomo Rubber Industries Limited Tyres for trucks and buses
JP2000177314A (en) * 1998-12-18 2000-06-27 Bridgestone Corp Pneumatic radial tire for heavy load
US20060032570A1 (en) * 2003-02-17 2006-02-16 Michelin Recherche Et Technique, S.A. Crown reinforcement for a radial tire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3473453B1 (en) * 2016-06-20 2021-05-05 Bridgestone Corporation Heavy duty pneumatic tire
CN112078306A (en) * 2020-08-07 2020-12-15 山东玲珑轮胎股份有限公司 Tire and belted layer design structure
JP7560293B2 (en) 2020-08-31 2024-10-02 Ｔｏｙｏ Ｔｉｒｅ株式会社 Heavy duty pneumatic tires

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