18.00R25矿用宽体自卸车专用工程机械轮胎的设计

Design of 18.00R25 Off-The-Road Tire Specialized for Mining Wide Body Dumping Trucks

介绍18.00R25矿用宽体自卸车专用工程机械轮胎的设计。结构设计:外直径1644 mm,断面宽499 mm,行驶面宽度424 mm,行驶面弧度高26 mm,胎圈着合直径630 mm,胎圈着合宽度343 mm,断面水平轴位置(H_(1)/H_(2))1.05,胎面花纹采用横向花纹沟拉通设计,花纹深度47 mm,花纹饱和度65%,花纹周节数34。施工设计:胎面采用缠绕方式成型,采用4层带束层结构,1^(#)—3^(#)带束层采用7×7×0.22+0.15HT钢丝帘线,4^(#)带束层采用4×6×0.25NT钢丝帘线,胎体采用7×7×0.25+0.15HT钢丝帘线,采用四鼓一次法成型机成型、蒸锅硫化机硫化。成品性能试验结果表明,轮胎的外缘尺寸和耐久性能符合相应国家标准和设计要求,接地印痕合理,TKPH额定值满足实际工况作业需要。

The design of 18.00R25 off-the-road tire specialized for mining wide body dumping truck was described.In the structural design,the following parameters were taken:overall diameter 1644 mm,cross-sectional width 499 mm,width of running surface 424 mm,arc height of running surface 26 mm,bead diameter at rim seat 630 mm,bead width at rim seat 343 mm,maximum width position of cross–section(H_(1)/H_(2))1.05,adopting a horizontal pattern groove pull through design for tread pattern,pattern depth 47 mm,block/total ratio 65%,and number of pattern pitches 34.In the construction design,the following processes were taken:using winding method to form tread,using 4-layer belts structure,7×7×0.22+0.15HT steel cord for 1^(#)—3^(#) belt,and 4×6×0.25NT steel cord for 4^(#) belt,using 7×7×0.25+0.15HT steel cord for carcass,using a four-drum one-stage building machine to build tires and a steamer vulcanizing press for cure tires.The results of the tire performance test showed that,the inflated peripheral dimension and durability met the requirements of corresponding national standards and design,the grounding print was reasonable,and the TKPH rated value met the needs of actual working conditions.