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| 29.5R25全钢工程机械子午线轮胎的研究与开发 |
| Research and development of 29.5R25 all-steel OTR radial tire |
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| DOI： |
| 中文关键词: 全钢工程机械子午线轮胎；无内胎轮胎；结构设计 |
| 英文关键词: all-steel OTR radial tire；tubeless tire；structure design |
| 基金项目: |
| 中图分类号:U463.341+.5/.6 |
| Author Name | Affiliation | | CHEN Gang | Yinchuan Grand Tour Tire Co.，Ltd | | YANG Wenli | Yinchuan Grand Tour Tire Co.，Ltd | | PAN Dai | Yinchuan Grand Tour Tire Co.，Ltd | | LIU Cheng | Yinchuan Grand Tour Tire Co.，Ltd | | YONG Chengfu | Yinchuan Grand Tour Tire Co.，Ltd | | LUO Zhonglin | Yinchuan Grand Tour Tire Co.，Ltd |
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| 中文摘要: |
| 介绍全钢工程机械子午线轮胎的设计特点和29.5R25无内胎全钢工程机械子午线轮胎的设计。结构设计：外直径 1 868 mm，断面宽 732 mm，行驶面宽度 630 mm，胎圈着合直径 628 mm，花纹深度 48 mm。施工设计：胎面采用两方三块结构，胎体采用7×7×0.22+0.15HT钢丝帘线，带束层采用3+9+15×0.22+0.15HT钢丝帘线，胎体、带束层和钢丝圈的安全倍数均大于7，成型采用两鼓一次法成型机，硫化采用单模定型硫化机。成品轮胎试验结果表明，充气轮胎外缘尺寸和水压爆破试验结果符合标准要求。 |
| 英文摘要: |
| The design characteristics of all-steel OTR radial tires and a design of 29.5R25 all-steel tubeless OTR radial tire were described.In structure design，the following parameters were taken：overall diameter 1 868 mm，cross-sectional width 732 mm，bead diameter at rim seat 628 mm，bead width at rim seat 635 mm，pattern depth 48 mm.In construction design，the following processes were taken：two-formula and three-piece extruded tread，7×7×0.22+0.15HT steel cord for carcass ply，3+9+15×0.22+0.15HT steel cord for belt ply，safety factor of over 7 for carcass，belt and bead；using one-step two drum building machine to build tires，and using single mold shaper-vulcanizer to cure tires.It was confirmed that overall dimensions of inflated tire and the safety factor of strength met the requirements of standards by the test of finished tire. |
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