21.00-2540PR无内胎港口工程机械轮胎的优化设计

Optimization of 21. 00-25 40PR Tubeless Off-The-Road Tire for Port

介绍21. 00-25 40PR无内胎港口工程机械轮胎的优化设计。结构设计:外直径1 780 mm,断面宽540mm,行驶面宽度510 mm,行驶面弧度高44 mm,胎圈着合直径629 mm,胎圈着合宽度381 mm,断面水平轴位置(H1/H2) 0. 868 5,胎面采用大八角花纹,花纹深度35 mm,花纹饱和度72%,花纹周节数26。施工设计:胎面胶采用缠绕成型,胎体采用24层1870dtex/2V1和2层2100dtex/2V2锦纶66浸胶帘布,采用半芯轮式成型机成型、单模胶囊定型硫化罐硫化。成品轮胎试验结果表明,轮胎的充气外缘尺寸和物理性能满足国家标准要求,静负荷性能达到预期设计目标。

The design on 21. 00-25 40 PR tubeless off-the-road tire for port was optimized. In the structure design,the following parameters were taken:overall diameter 1 780 mm,cross-sectional width540 mm,width of running surface 510 mm,arc height of running surface 44 mm,bead diameter at rim seat 629 mm,bead width at rim seat 381 mm,maximum width position of cross-section(H1/H2) 0. 868 5,using large octagon tread pattern,pattern depth 35 mm,block/total ratio 72%,and number of pattern pitches 26. In the construction design,the following processes were taken:winding process for tread compound,24 layers 1870 dtex/2 V1 and 2 layers 2100 dtex/2 V2 nylon 66 dipped cord for carcass,using semicore building machine to build tires,and single-mold bladder autoclave to cure tires. The test results of the finished tire showed that,the inflated peripheral dimension and physical properties met the requirements of national standards,and the static load performance reached the design goal.