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Tire tread for a heavy civil-engineering vehicle

A technology for heavy-duty vehicles and civil engineering, applied in the field of tire treads for heavy-duty civil engineering vehicles, can solve problems such as limiting tire life, limiting durability, and deterioration of tire crown components, and achieving the effect of reducing tire wear

Active Publication Date: 2018-08-03
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These high temperatures generated in the crown can lead to degradation of the crown components and limit their durability and thus the life of the tire

Method used

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  • Tire tread for a heavy civil-engineering vehicle
  • Tire tread for a heavy civil-engineering vehicle
  • Tire tread for a heavy civil-engineering vehicle

Examples

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Embodiment Construction

[0050] Figure 1A is a plan view of the tread 2 of the tire 1 according to the invention. The tread 2, which is intended to come into contact with the ground through a tread surface 21, has an axial width W T and a radial thickness H at least equal to 70mm T (not shown). In the case shown, the tread 2 comprises five circumferential grooves 3 arranged axially on or on both sides of an equatorial plane XZ passing through the middle of the tread and perpendicular to the axis of rotation YY' of the tyre. Each circumferential groove 3 is arranged axially at an axial distance L with respect to the equatorial plane XZ and has an axial width W along the axis YY' and a radial depth H along the axis ZZ' (not shown ), the radial depth H is at least equal to the radial thickness H T 70% of and at most equal to the radial thickness H T . According to the invention, each circumferential groove 3 has an axial width W and a radial depth H such that the ratio W / H is at least equal to 0.06...

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Abstract

The present invention relates to a tire (1) for a heavy civil-engineering vehicle, and more particularly to the tread (2) thereof, and is aimed at reducing the temperatures generated in the crown of the tire and thus improving the endurance of the crown of the tire. The tread (2), having an axial width W T and a radial thickness H T at least equal to 70 mm, includes at least two circumferential grooves (3) positioned axially on either side of an equatorial plane (XZ). According to the invention, each circumferential groove (3) has an axial width W and a radial depth H, such that the W / H ratiois at least equal to 0.06, the axial distance C between two consecutive circumferential grooves (3) is at least equal to 2% and at most equal to 21% of the axial width W T of the tread and each of theaxially outermost circumferential grooves (3) is axially positioned, relative to the equatorial plane XZ, at an axial distance L E at least equal to 35% of the axial width W T of the tread.

Description

technical field [0001] The subject of the invention is a tire for heavy vehicles of the civil engineering type intended to carry heavy loads and to travel on uneven ground, such as that of a mine. The invention relates more particularly to the tread of such tires. Background technique [0002] In this document: [0003] - Radial direction means a direction perpendicular to the axis of rotation of the tyre, corresponding to the thickness direction of the tread. [0004] - Axial direction or transverse direction means a direction parallel to the axis of rotation of the tyre. [0005] - Circumferential direction or longitudinal direction means a direction tangential to the circumference of the tyre, and perpendicular to both the axial direction and the radial direction. [0006] - The equatorial plane is the plane perpendicular to the axis of rotation of the tire and dividing the tread transversely into two halves of equal width. [0007] The tread is the part of the tire c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/04B60C3/04B60C11/03B60C11/12
CPCB60C2011/0353B60C2011/0355B60C2200/065B60C11/12B60C2011/0386B60C11/0306B60C2011/0033B60C2011/0348B60C11/1236
Inventor F·巴尔巴林G·德马齐尔
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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