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    • 9. 发明授权
    • Heavy duty tire
    • 重型轮胎
    • US07954529B2
    • 2011-06-07
    • US11905271
    • 2007-09-28
    • Hideaki YoshikawaKiyoto Maruoka
    • Hideaki YoshikawaKiyoto Maruoka
    • B60C15/00B60C15/06
    • B60C15/06B60C9/07B60C15/0027Y10T152/10819Y10T152/10837Y10T152/10846
    • A heavy duty tire comprises: a carcass ply of cords extending between bead portions; and a bead reinforcing layer disposed in each of the bead portion. The carcass ply has edges winded around the bead cores so that the winded portion has a base part extending along the bead core from the axially inside to the axially outside thereof, and a radially outer part extending axially inwards on the radially outside of the bead core. The bead reinforcing layer comprises: a curved portion extending along the base part; an axially outer portion extending radially outwardly, separation from the base part; and an axially inner portion extending radially outwardly along a main portion of the carcass ply. The bead reinforcing layer is composed of a ply of cords laid side by side, and the spacing Da of the cords in an axially outer part beneath the bead core, of the curved portion is not less than 1.5 times and not more than 3.0 times the spacing Db of the cords in the axially outer portion.
    • 重型轮胎包括:在胎圈部分之间延伸的帘线帘布层帘线; 以及设置在每个胎圈部中的胎圈加强层。 胎体帘布层具有缠绕在胎圈芯上的边缘,使得缠绕部分具有沿着胎圈芯从轴向内部延伸到其轴向外部的基部,以及在胎圈芯的径向外侧上向内向内延伸的径向外部 。 胎圈加强层包括:沿着基部延伸的弯曲部分; 径向向外延伸的轴向外部,与基部分离; 以及沿着胎体帘布层的主要部分沿径向向外延伸的轴向内部。 胎圈加强层由并排放置的帘布层构成,弯曲部的胎圈芯下方的轴向外侧的帘线的间隔Da不小于弯曲部的1.5倍以上3.0倍以下 帘线在轴向外部的间隔Db。