Design of 11R24.5 Off-Road-Traction All-steel Truck and Bus Radial Tire
The design of 11R24.5 off-road-traction all-steel truck and bus radial tire was described.In the structural design,the following parameters were taken:overall diameter 1 112.8 mm,cross-sectional width 280.7 mm,width of running surface 240 mm,arc height of running surface 5.5 mm,bead diameter at rim seat 621.8 mm,bead width at rim seat 223.6 mm,maximum width position of cross-section(H1/H2)0.928,adopting a large pattern block design and a pattern groove bottom protective rib design fortread,pattern depth 26.5 mm,block/total ratio 65.5％,and number of pattern pitches 48.In the construction design,the following processes were taken:using a three-extrusion process to form tread,adopting a 4-layer belt structure,4+3 × 0.33ST steel cord for 1# belt,3+8×0.33HT steel cord for 2# and 3# belt,5×0.35HI steel cord for 4# belt,using 3+9+15×0.22+0.15 steel cord for carcass,using a three-drum one-stage building machine to build tires and a dual-mold shaping vulcanizing press for cure tires.The results of the finished tire performance test showed that,the inflated peripheral dimension,strength and durability met the corresponding testing standards and design requirements.
off-road-traction tireall-steel truck and bus radial tirestructural designconstruction designfinished tire performance
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