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Tire sidewalls for heavy civil engineering vehicles

A technology for heavy-duty vehicles and tires, applied in the direction of heavy-duty tires, tire treads/tread patterns, vehicle components, etc.

Active Publication Date: 2021-07-09
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultimately, tire durability optimization leads to a coupled problem in which the physical parameters involved are the viscous shear modulus or viscoelastic loss (which is directly connected to the viscoelastic heat source), thermal conductivity (which controls the thermal conduction in body compounds), and electrical conductivity (which must be at a level sufficient to discharge static charges)

Method used

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  • Tire sidewalls for heavy civil engineering vehicles
  • Tire sidewalls for heavy civil engineering vehicles
  • Tire sidewalls for heavy civil engineering vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0089] The present inventors determine the composition of the elastic body distribution constituting the fetal side layer by seeking the following physical parameters:

[0090] Dynamic viscoelastic loss or viscous shear modulus associated with viscoelastic heat sources;

[0091] The thermal conductivity of heat transfer in the control of the mixture;

[0092] - The conductivity must be in a level sufficient to release the static charge.

[0093] In the examples studied, the composition of the elastomeric blend produced due to this compromise is summarized in Table 1:

[0094] Table 1

[0095]

[0096]

[0097] * Elastomeric blend M obtained by liquid pathway 4

[0098] (2) "Zeosil 1165MP" silica sold by Rhodia

[0099] (3) "Vivatec 500" TDAE oil from Klaus Dahleke

[0100] Table 2 summarizes the physical parameters of the elastomeric blend, these physical parameters are measured on the test sample, and is the selection of chemical composition:

[0101] Table 2

[0102]

[0...

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PUM

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Abstract

The present invention relates to a radial tire (10) for heavy civil engineering vehicles, and more particularly to a sidewall (20) of the radial tire (10) for minimizing the temperature of the tire while ensuring its electrical conductivity . The tread (30) comprises two tread edges (31) and a middle portion (32). According to the invention, when the tire is mounted on the rim and pressed against the ground, the bead layer (71), the elastomeric compound used to coat the carcass layer (50), the second sidewall layer (22) and the tread The edge (31) provides an excellent conduction path for the charge between the rim and the ground.

Description

Technical field [0001] The present invention relates to a meridian tire intended to be assembled to a stationary vehicle, more particularly to the tire side of the tire. Background technique [0002] According to the European tire and rim technology or ETRTO standard, the meridian tires for heavy-duty vehicles for the construction site are intended to be mounted on a rim having a diameter of at least equal to 25 inches. It is usually assembled to heavy vehicles, intended to withstand high loads and travel on harsh geographies (eg, a track that covers stones). [0003] Typically, since the tire has a geometry rotating relative to the axis of rotation, the geometry is described in a sub-flaw plane including the axis of rotation of the tire. A direction perpendicular to the axis of rotation, parallel to the axis of rotation, respectively, is parallel to the axis of rotation and the rotation axis and vertical planes, respectively, in the radial, axial direction and circumferential di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C19/08B60C11/00B60C13/04
CPCB60C1/0016B60C1/0025B60C19/082B60C2200/065B60C11/005B60C2013/045B60C2013/006B60C19/086
Inventor C·勒马尔尚C·鲁塞尔C·贝兰T·鲁瓦耶
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN