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Tyre tread for an agricultural vehicle

A technology for tires and treads, which is applied in the field of tire treads for agricultural vehicles, which can solve the problems of impermissibility and achieve the effects of reducing forward resistance, reducing tread width, and increasing traction capacity

Active Publication Date: 2018-08-31
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The design features of prior art lug treads do not currently allow for a satisfactory balance between performance in field use, such as traction performance and forward resistance, and performance in road use, such as wear life and rolling resistance. compromise

Method used

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  • Tyre tread for an agricultural vehicle
  • Tyre tread for an agricultural vehicle
  • Tyre tread for an agricultural vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] figure 1 Shown is a meridian section in the meridian plane YZ of a tire 1 for an agricultural vehicle comprising a tread 2 intended to come into contact with the ground via a tread surface 3 . The tread 2 comprises raised elements 4 separated from each other at least in part by grooves 5 extending radially outwards from a bottom surface 6 to a radial height H up to the tread surface 3 , said radial height H At least equal to 30 mm and at most equal to the radial thickness H of the tread 2 max . The tread 2 has two axial ends (E 1 ,E 2 ) total width W measured between T . The tread 2 comprises a central portion 20 symmetrical about the equatorial plane XZ and having a central width W, and two lateral portions (21, 22). C , the middle width W C At least equal to the total width W T 5% of and at most equal to the total width W T 25% of the two sides (21, 22) from the axial end of the tread surface 2 (E 1 ,E 2 ) extends axially inward and each side has a side wid...

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PUM

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Abstract

The invention relates to a tyre (1) for an agricultural vehicle, and particularly to the tread thereof (2). The aim of the invention is to improve the compromise between the traction capacity and thetractive resistance in fields, and the wear life and rolling resistance on the road. The tread has a radial thickness Hmax and comprises a central part (20) and two side parts (21, 22). As such, the meridional profile (PS) of the radially outer surface (31, 32) of each side part (21, 22) is radially on the inside of the meridional profile (PC) of the radially outer surface (30) of the central part(20), and the radial distance (d) between the middle point (I1, I2) of the meridional profile (PS) of the radially outer surface (31, 32) of each side part (21, 22) and the meridional profile (PC) ofthe radially outer surface (30) of the central part (20) is at least equal to 0.5 times the radial thickness Hmax of the tread (2).

Description

technical field [0001] The subject of the invention is a tire for an agricultural vehicle such as a tractor or an agricultural vehicle. The subject of the invention is more particularly an agricultural tire intended to be subjected to torque, and more particularly a tire tread intended to come into contact with the ground via the tread surface. Background technique [0002] Agricultural tires are designed to operate on various types of ground, such as more or less compacted field soils, unfinished tracks providing access to open fields, and the tarmac surface of roads. In view of the diversity of use, in the field and on the road, agricultural tires and in particular their treads need to offer a performance compromise that varies according to use. In the process of field use, the target performance is basically effective traction performance, light compaction of the ground and low forward resistance. During road use, the target performance aspects are effective speed perfo...

Claims

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Application Information

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IPC IPC(8): B60C11/03
CPCB60C11/0311B60C2200/08B60C2011/0313Y02T10/86B60C11/03B60C11/0316
Inventor P·韦尔韦I·马加什B·沙拉松M·冈迪约O·罗帕尔
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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