775/65R29☆☆低断面无内胎工程机械子午线轮胎的设计

Design on 775/65R29 ☆☆ Low Profile Tubeless Off-The-Road Radial Tire

介绍775/65R29低断面无内胎工程机械子午线轮胎的设计。结构设计:外直径1 735 mm,断面宽766mm,行驶面宽度658.76 mm,行驶面弧度高36.5 mm,胎圈着合直径727.8 mm,胎圈着合宽度622.3 mm,断面水平轴位置(H_1/H_2)0.82,花纹深度46 mm,花纹饱和度58.5%,花纹周节数26。施工设计:采用胎面胶和基部胶缠绕工艺,1~#和2~#带束层采用7×7×0.22+0.15HT钢丝帘线,3~#和4~#带束层采用3×7×0.22HE高伸长钢丝帘线,胎体采用3+9+15×0.245HT钢丝帘线,采用分段法成型机成型、硫化机硫化。成品性能试验结果表明,成品轮胎的外缘尺寸、耐久性能和TKPH值均达到设计和相关标准要求。

The design on 775/65R29 ☆☆ low profile tubeless off-the-road radial tire was described.In structure design,the following parameters were taken：overall diameter 1 735 mm,cross-sectional width 776 mm,width of running surface 658.76 mm,arc height of running surface 36.5 mm,bead diameter at rim seat 727.8 mm,bead width at rim seat 622.3 mm,maximum width position of cross–section（H_1/H_2） 0.82,pattern depth 46 mm,block/total ratio 58.5%,and number of pattern pitches 26.In construction design,the following processes were taken：winding process for tread compound and base compound,7×7×0.22＋0.15HT steel cord for 1~# and 2~# belt,3×7×0.22HE steel cord for 3~#and 4~# belt,3＋9＋15×0.245HT steel cord for carcass ply,using multi-stage building machine to build tire and curing press to cure tire.It was confirmed by the tests of the finished tire that,the peripheral dimension,endurance and TKPH value met the requirements of the design and corresponding standards