12.00-20 18PR载重斜交轮胎的优化设计

对12．00－2018PR载重斜交轮胎的结构进行了优化设计。采取的主要措施是：改进轮胎外轮廓、胎面花纹和胎圈结构；胎体采用12层1400dtex/2加密尼龙帘布替代10层1870dtex/2尼龙帘布；缓冲层采用单层宽缓冲层帘布替代两层窄缓冲层帘布；提高反包高度；加大三角胶；增大油皮胶厚度。优化设计后，轮胎的各项性能符合国际标准，超载能力有明显的改善。

Optimized design of 12.00- 20 18PR bias truck tire

The design of 12 00-20 18PR bias truck tire structure was optimized.The major measures were as follows:the outer profile of tire,the tread patterns and the bead structure were modified;twelve plies of 1400dtex/2 densified nylon cord were used instead of ten plies of 1870dtex/2 nylon cord in the carcass;the single wide cushion ply was replaced for the two narrow cushion plies;the bead filler was enlarged;and the thickness of insulating compound was increased.The performance criteria of optimized tire met with the requirements specified in the national standards and the overload capacity was significantly improved.