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| 12.4-48 12PR R-7农业轮胎的设计 |
| Design on 12.4-48 12PR R-7 Agriculture Tire |
| Received:April 19, 2018 Revised:April 19, 2018 |
| DOI：10.12135/j.issn.1006-8171.2019.07.0406 |
| 中文关键词: 农业轮胎；结构设计；施工设计 |
| 英文关键词: agriculture tire；structure design；construction design |
| 基金项目: |
| 中图分类号: |
| Author Name | Affiliation | E-mail | | XUE Yuan* | Xuzhou Xulun Rubber Co.，Ltd | xzxy1986@126.com | | CHEN Sen | Xuzhou Xulun Rubber Co.，Ltd | | | ZHAO Xing Hai | Xuzhou Xulun Rubber Co.，Ltd | | | SUN Lei | Xuzhou Xulun Rubber Co.，Ltd | | | FANG Jian | Xuzhou Xulun Rubber Co.，Ltd | |
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| 中文摘要: |
| 介绍12.4-48 12PR R-7农业轮胎的设计。结构设计：外直径 1 775 mm，断面宽 295 mm，行驶面宽度 275 mm，行驶面弧度高 21 mm，胎圈着合直径 1 221 mm，胎圈着合宽度 254 mm，断面水平轴位置（H1/H2） 0.73，胎面采用R-7花纹，花纹深度 36 mm，花纹饱和度 27%，花纹周节数 18。施工设计：胎面采用两方三块结构，缓冲层采用2层930dtex/2锦纶6浸胶帘布，胎体采用6层高强度1400dtex/2锦纶6浸胶帘布，采用半芯轮式成型机成型、硫化罐硫化。成品轮胎试验结果表明，轮胎的外缘尺寸和物理性能满足相应国家标准和企业标准要求。 |
| 英文摘要: |
| The design on 12.4-48 12PR R-7 agriculture tire was described.In the structure design，the following parameters were taken：overall diameter?1 775 mm，cross-sectional width?295 mm，width of running surface 275 mm，arc height of running surface 21 mm，bead diameter at rim seat?1 221 mm，bead width at rim seat?254 mm，maximum width position of cross–section（H1/H2）?0.73，using R-7 tread pattern，pattern depth?36 mm，block/total ratio?27%，and number of pattern pitches?18.In the construction design，the following processes were taken：using two-formula and three-piece structure for tread，2 layers of 930dtex/2 nylon 6 dipped cord for breaker ply，6 layers of high stength 1400dtex/2 nylon 6 dipped cord for carcass ply，using semi-drum building machine to build tires and curing press to cure tires.It was confirmed by the tests of finished tire that the perpheral dimension and physical properties met the requirements of relative national and enterprise standards． |
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