Radial carcass tyre for civil engineering vehicles

摘要

Radial carcass tyre intended for civil engineering vehicles comprising a radial carcass made from cabled ply (2), a pair of bead wires (1) a ply turn-up part (3) a rubber stiffener (5) located on the bead wire (1), and at least two bracing layers (11) made from fabric cabled with rubberised fibres set into the stiffening rubber (5) by way of bracing for the bead part; the said bracing layer (11) satisfying the following relationships:…                     alpha = (0.5 - 0.87) .H…                    ss = (0.52 - 0.78) .h… in which alpha is a height of one end of the bracing layer positioned in the vicinity of the internal surface of the ply turn-up part (3) and towards the inside in the radial direction of the tyre, and measured from the base line of a normal wheel rim, ss is a height of the other end of the bracing layer positioned in the vicinity of the outer surface of the carcass ply (2) and towards the outside in the radial direction of the tyre, and measured from the base line, H is a height of the rim of the normal wheel rim and h is a height at a position corresponding to the maximum width of the carcass measured from the base line. … IMAGE …