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| 21.00－25 40PR无内胎港口工程机械轮胎的优化设计 |
| Optimization of 21.00－25 40PR Tubeless Off-The-Road Tire for Port |
| Received:July 10, 2019 Revised:July 18, 2019 |
| DOI：10.12135/j.issn.1006-8171.2020.04.0209 |
| 中文关键词: 港口工程机械轮胎；无内胎轮胎；结构设计；施工设计；性能测试 |
| 英文关键词: off-the-road tire for port；tubeless tire；structure design；construction design；performance testing |
| 基金项目: |
| 中图分类号: |
| Author Name | Affiliation | E-mail | | WuHui* | Zhongce Rubber Group Co.,Ltd. | godgodwh@126.com | | DingZhaoYang | Zhongce Rubber Group Co.,Ltd. | | | LiuChengXiang | Zhongce Rubber Group Co.,Ltd. | |
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| 中文摘要: |
| 介绍21.00－25 40PR无内胎港口工程机械轮胎的优化设计。结构设计：外直径 1 780 mm，断面宽 540 mm，行驶面宽度 510 mm，行驶面弧度高 44 mm，胎圈着合直径 629 mm，胎圈着合宽度 381 mm，断面水平轴位置（H1/H2） 0.868 5，胎面采用大八角花纹，花纹深度 35 mm，花纹饱和度 72%，花纹周节数 26。施工设计：胎面胶采用缠绕成型，胎体采用24层1870dtex/2V1和2层2100dtex/2V2锦纶66浸胶帘布，采用半芯轮式成型机成型、单模胶囊定型硫化罐硫化。成品轮胎试验结果表明，轮胎的充气外缘尺寸和物理性能满足国家标准要求，静负荷性能达到预期设计目标。 |
| 英文摘要: |
| The design on 21.00－25 40PR tubeless off-the-road tire for port was optimized.In the structure design，the following parameters were taken：overall diameter 1 780 mm，cross-sectional width 540 mm，width of running surface 510 mm，arc hight of running surface 44 mm，bead diameter at rim seat 629 mm，bead width at rim seat 381 mm，maximum width position of cross-section（H1/H2） 0.868 5，using large octagon tread pattern，pattern depth 35 mm，block/total ratio 72%，and number of pattern pitches 26.In the construction design，the following processes were taken：winding process for tread compound，24 layers 1870dtex/2V1 and 2 layers 2100dtex/2V2 nylon 66 dipped cord for carcass，using semi-core building machine to build tires，and single-mold bladder autoclave to cure tires.The test results of the finished tire showed that，the inflated peripheral dimension and physical properties met the requirements of national standards，and the static load performance reached the expected design goal. |
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