26.5R25全钢工程机械子午线轮胎的设计

介绍26．5R25全钢工程机械子午线轮胎的设计。结构设计：外直径1738mm，断面宽660mm，行驶面宽度606mm，行驶面弧度高33．68mm，胎圈着合直径629．5mm，胎圈着合宽度566mill，断面水平轴位置（H1／H2）0．83，花纹深度37mm，花纹饱和度63％。施工设计：胎面采用热喂料缠绕成型方式，胎体采用7×7×0．22＋0．15HT钢丝帘线，带束工作层采用3＋9＋15×0．22＋0．15钢丝帘线，带束保护层采用3×7×0．20HE钢丝帘线，正六角形钢丝圈采用φ2．0mm胎圈钢丝，两鼓一次法成型机成型，单模热板硫化机硫化。成品性能试验结果表明，轮胎的充气外缘尺寸、耐久性能和TKPH值均达到设计和相关标准要求。

Design of 26.5R25 Earth-mover Radial Tire

The design of 26.5R25 earth-mover radial tire was described.In structure design,the following parameters were taken:overall diameter 1 738 mm,cross sectional width 660 mm,width of running surface 606 mm,height of running surface 33.68 mm,bead diameter at rim seat 629.5 mm,bead width at rim seat 566 mm,cross-sectional level ratio(H1/H2) 0.83,pattern depth 37 mm,and block/groove ratio 63%.In construction design,the following processes were taken:using hot-feed winded tread,7×7×0.22+0.15HT steel cord for carcass ply,3+9+15×0.22+0.15 steel cord for belt working ply,3×7×0.20HE steel cord for belt guard ply,Ф2.0 mm bead wire for hexagonal bead,and using two-drum one-stage building machine to build tires and single-mold hot press to cure tires.It was confirmed by the test of finished tires that the inflated peripheral dimension,endurance and TKPH value met the requirements in design and related standard.