Design of 18.00R25 Off-The-Road Tire Specialized for Mining Wide Body Dumping Trucks
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 1 644 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(H1/H2)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.
off-the-road tirewide body dumping truckstructural designconstruction designfinished tire performance
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