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阐述了多功能叶轮点焊胎的技术指标，分别从圆盘分度系统的改进设计、叶片角度旋转机构的设计及叶轮直径调整机构的设计三个方面，介绍了结构设计的特点。
The technical indexes of the multifunction impeller spot welding tire are described. The characteristics of the structural design are introduced from three aspects: the improved design of the indexing system of the disk, the design of the rotating angle of the blade and the design of the impeller diameter adjusting mechanism.