T155/85R18 T型备胎的设计

Design on T155/85R18 T-type Spare Tire

介绍T155/85R18 T型备胎的设计。结构设计:外直径716 mm,断面宽157 mm,行驶面宽度116 mm,行驶面弧度高9.98 mm,胎冠采用两段弧设计,一段弧长200 mm,二段弧长120 mm,胎圈着合直径461.1 mm,胎圈着合宽度114.3 mm,断面水平轴位置(H_(1)/H_(2))0.85,胎面采用2条纵沟与横沟相结合的混合花纹,花纹饱和度76.49%。施工设计:胎面采用高耐磨炭黑胶料,胎体采用1440dtex/2聚酯帘布,冠部采用2层带束层、无冠带缠绕设计。成品轮胎性能试验结果表明,轮胎的充气外缘尺寸、强度性能、脱圈阻力、高速性能和耐久性能均达到国家标准要求,气密性、气味和实车耐磨性能达到主机厂要求。

The design on T155/85R18 T-type spare tire was described.In the structure design,the following parameters were taken:overall diameter 716 mm,cross-sectional width 157 mm,width of running surface 116 mm,arc height of running surface 9.98 mm,using two arc design for crown,the first art length 200 mm,the second art length 120 mm,bead diameter at rim seat 461.1 mm,bead width at rim seat 114.3 mm,maximum width position of cross-section(H1/H2)0.85,using mixed pattern combining two longitudinal grooves and transverse grooves,and block/total ratio 76.49%.In the construction design,the following processes were taken:highly wear-resistant carbon black compound for tread,1440dtex/2 polyester cord for carcass,2 layers of belts for tire crown without crown band winding design.The test results of the finished tire showed that,the inflated peripheral dimension,strength,bead unseating resistance,high speed performance and durability met the requirements of national standards,and the air tightness,odor and wear resistance met the requirements by automobile manufacturers.