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Tyre for heavy vehicles, comprising a layer of circumferential reinforcing elements consisting of a central part and two axially external parts

A technology for reinforcing elements, central parts, in the direction of heavy vehicles, vehicle components, heavy tires, etc.

Inactive Publication Date: 2012-08-15
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it appears that the same vehicles must sometimes be driven on non-tarmac roads or tracks, for example in order to reach work sites or unloading areas

Method used

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  • Tyre for heavy vehicles, comprising a layer of circumferential reinforcing elements consisting of a central part and two axially external parts
  • Tyre for heavy vehicles, comprising a layer of circumferential reinforcing elements consisting of a central part and two axially external parts
  • Tyre for heavy vehicles, comprising a layer of circumferential reinforcing elements consisting of a central part and two axially external parts

Examples

Experimental program
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Embodiment Construction

[0096] in figure 1 Among them, a tire 1 with a size of 455 / 45R 22.5 has an aspect ratio H / S of 0.45, H is the height of the tire 1 on its mounting rim, and S is the maximum axial width. The tire 1 includes a radial carcass reinforcement 2 anchored in two beads, the beads being figure 1 Not shown in. The carcass reinforcement is formed by a single metal cable layer. The carcass reinforcement 2 is hooped by a crown reinforcement 4, which is composed of the following radially from the inside to the outside:

[0097] -A reinforcing element layer 45 called a triangular layer, which is formed of a non-extensible non-wound 9.28 metal cable that is continuous over the entire width of the ply and oriented at an angle of 50°,

[0098] -A first working layer 41 formed of a non-extensible non-wound 11.35 metal cable that is continuous over the entire width of the ply and oriented at an angle of 18°,

[0099] -A circumferential reinforcing element layer 42 formed by a 21x28 steel metal cable ...

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Abstract

The invention relates to a tyre comprising at least two working layers (41, 43) and at least one layer of circumferential metal reinforcing elements (42). According to the invention, the layer of circumferential metal reinforcing elements consists of at least one central part (422) and two axially external parts (421), the reinforcing elements of the central part of at least one layer of circumferential metal reinforcing elements being reinforcing elements cut so as to form sections (6), the length of the sections being less than 550 mm, the distance (d) between the ends of two consecutive sections being greater than 25 mm, the length of the sections being between 1.1 and 13 times the distance between the ends of two consecutive sections and the reinforcing elements of the two axially external parts (421) being continuous.

Description

Technical field [0001] The present invention relates to tires with radial carcass reinforcements, and in particular to tires intended to be installed on vehicles that carry heavy loads and travel at sustained speeds, such as trucks, tractors, trailers or road buses. Background technique [0002] Generally, in heavy cargo vehicle type tires, the carcass reinforcement is anchored on each side in the bead area and is covered in the radial direction by a crown reinforcement composed of at least two superimposed layers. The layers are formed by parallel cords or cables in each layer that cross from one layer to the next to form an angle between 10° and 45° to the circumferential direction. The working layer forming the working reinforcement may also be covered by at least one layer called a protective layer, the protective layer being formed by reinforcing elements, which are advantageously metallic and extendable, and are called elastic elements. It may also include a metal cable or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C9/18B60C9/22B60C9/20
CPCB60C9/1821B60C9/2006B60C9/22B60C2200/06B60C2009/2041Y10T152/10513Y10T152/10783B60C2009/2214B60C2009/2261B60C2009/2295B60C9/0238
Inventor J-M·维莱尔
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN