提高轮胎负荷能力的研究

根据９．００－２０１６ＰＲ尼龙载重斜交轮胎使用条件的变化，有针对性地对原设计进行了改进。调整轮廓参数，Ｈ１／Ｈ２的值由０．９０４９改为０．９１２５，使断面水平轴上移，减小下胎侧变形；胎圈直径减小１ｍｍ；胎面花纹采用八脚形；缓冲层由“二窄”结构改为“单宽”结构；胎体采用１８７０ｄｔｅｘ／２加密帘布。同时，严格控制工艺执行率。改进后，轮胎成品性能符合企业标准，轮胎耐久性能和超负荷性能大大提高。

Study on Increasing Tire Load Capacity

The original design of 9 00-20 16PR nylon bias truck tire was modified according to the change of their service conditions.The profile parameters changed,i.e. H 1/ H 2 was increased from 0 904 9 to 0 912 5 to shift the horizontal axis upwards and reduce the deformation in lower sidewall region;the bead diameter was decreased by 1 mm;the eight feet tread patterns were used;the single ply wide breaker was used instead of the two narrow ply breaker;and 1870 dtex/2 tightened cord was used in carcass.At same time ,the processing technique was carried out tightly.The endurance and super load capacity of modified tire were improved significantly.