215/70R17.5 14PR无内胎全钢载重子午线轮胎的设计

Design on 215/70R17. 5 14PR Tubeless Truck and Bus Radial Tire

介绍215/70R17. 5 14PR无内胎全钢载重子午线轮胎的设计。结构设计:外直径750 mm,断面宽215 mm,行驶面宽度160 mm,行驶面弧度高7 mm,胎圈着合直径442 mm,胎圈着合宽度165 mm,断面水平轴位置(H_1/H_2) 0. 826,胎面采用3条纵向花纹设计,花纹深度13 mm,花纹饱和度75. 66%,花纹周节数62。施工设计:胎面采用两方两块结构,1~#和2~#带束层采用3×0. 20+6×0. 35HT钢丝帘线,3~#带束层采用5×0. 30HI钢丝帘线,0°带束层使用3×7×0. 20HE钢丝帘线,胎体采用3×0. 24+9×0. 225+0. 15HT钢丝帘线。采用一次法两鼓胶囊反包成型机成型、液压硫化机硫化。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、耐久性能和速度性能均达到相关设计和国家标准要求。

The design of 215/70 R17. 5 14 PR tubeless truck and bus radial tire was described. In the structure design,the following parameters were taken:overall diameter 750 mm,cross-sectional width215 mm,width of running surface 160 mm,arc height of running surface 7 mm,bead diameter at rim seat 442 mm,bead width at rim seat 165 mm,maximum width position of cross section(H1/H2) 0. 826,3 longitudinal pattern design for tread,pattern depth 13 mm,block/total ratio 75. 66%,and the number of pattern pitches 62. In the construction design,the following processes were taken:two-formula and twopiece structure for tread,3×0. 20+6×0. 35 HT steel cord for 1# and 2# belt,5×0. 30 HI steel cord for 3# belt,3×7×0. 20 HE for 0° belt,3×0. 24 + 9×0. 225 + 0. 15 HT steel cord for carcass,using single stage twodrum bladder turn-up building machine to build tire,and hydraulic curing press to cure tire. It was confirmed by the finished tire tests that the inflated peripheral dimension,strength performance,endurance and speed performance met the requirements of relative design and national standard.