245/70R19.5 16PR 全钢载重子午线轮胎的设计

介绍245/7019.5 16PR全钢载重子午线轮胎的设计。结构设计：轮胎外直径837.7mm,断面宽256.2 mm,行驶面宽度192mm,弧度高10mm,胎圈着合直径493.3mm,胎圈着合宽度215.9mm,断面水平轴位置(H₁/H₂) 1.03，花纹深度　13 mm，花纹饱和度　77.5%，花纹周节数　77。施工设计：胎面采用热冷喂料双复合挤出，采用4层带束层结构，1#—3#带束层采用3×0.20＋6×0.35HT钢丝帘线，4#带束层采用5×0.30HI钢丝帘线，胎体采用3＋9×0.22＋0.15HT钢丝帘线，钢丝圈采用Φ1.83 mm胎圈钢丝，采用三鼓一次法成型机成型、双模B型热板硫化机硫化。成品轮胎性能试验结果表明，充气轮胎的外缘尺寸、强度性能和耐久性能均符合设计和相应国家标准要求。;The design on 245/70R19.5 16PR all-steel truck and bus radial tire was described.In structure design，the following parameters were taken：overall diameter?837.7 mm，cross-sectional width?256.2 mm，width of running surface　192 mm，arc height of running surface　10 mm，bead diameter at rim seat?493.3 mm，bead width at rim seat?215.9 mm，maximum width position of cross–section（H1/H2）?1.03，pattern depth?13 mm，block/total ratio?77.5%，and number of pattern pitches?77.In construction design，the following processes were taken：using hot and cold feed co-extruded tread，using 4 layer construction for belts，3×0.20＋6×0.35HT steel cord for 1#—3# belt，5×0.30HI steel cord for 4# belt，3＋9×0.22＋0.15HT steel cord for carcass ply，Φ1.83 mm bead wire for bead，using three-drum one stage building machine to build tire and double-mold B-type hot-plate curing press to cure tire．It was confirmed by the finished tire test that，the inflated peripheral dimension，strength and endurance met the requirements of the design and national standards