7.50-16 8PR R-2农业轮胎的设计

Design on 7.50-16 8PR R-2 Agriculture Tire

介绍7.50-168PR R-2农业轮胎的设计。结构设计:外直径822 mm,断面宽197 mm,行驶面宽度185 mm,行驶面弧度高19 mm,胎圈着合直径405 mm,胎圈着合宽度140 mm,断面水平轴位置(H1/H2)0.62,胎面采用高花纹块,花纹深度45 mm,花纹饱和度21.1%,花纹周节数17。施工设计:胎面采用两方四块结构,缓冲层采用2层930dtex/2锦纶6浸胶帘布,胎体采用4层高强度1400dtex/2锦纶6浸胶帘布(2V1+2V2),采用LCX-2B成型机成型、立式硫化罐硫化。成品轮胎试验结果表明,成品轮胎的充气外缘尺寸和物理性能分别满足设计和国家标准要求。

The design on 7.50-168PR R-2 agriculture tire was described.In the structure design,the following parameters were taken:overall diameter 822 mm,cross-sectional width 197 mm,width of running surface 185 mm,arc height of running surface 19 mm,bead diameter at rim seat 405 mm,bead width at rim seat 140 mm,maximum width position of cross–section(H1/H2)0.62,using high height tread pattern block,pattern depth 45 mm,block/total ratio 21.1%,and number of pattern pitches 17.In the construction design,the following processes were taken:using two-formula and four-piece tread,2 layers of 930dtex/2 nylon 6 dipped cord for breaker ply,4 layers of high strength 1400dtex/2 nylon 6(2V1+2V2)dipped cord for carcass,using LCX-2B building machine to build tire,and vertical vulcanizer to cure tire.It was confirmed by the finished tire test that,the inflated peripheral dimension and physical properties met the requirements of the design and national standards.