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1 前言履带式工程机械如推土机、挖掘机、装载机等,在使用过程中,可能发生链轨碎裂、销套碎裂等故障。由于链节的销孔与销轴、套孔与销套均为过盈配合,且过盈量比较大,一般在0.15～0.35mm之间,再加上链轨的结构特点,因此,对故障链轨的修复是比较困难的。在实践中我们逐渐总结掌握了一套简单实用的修复办法。其基本要点是:首先将故障组件调整到引导轮位置,然后用乙炔气体进行切割,并辅以大锤、千斤顶等工具,拆除组件,换上新件。
1 Foreword Crawler construction machinery such as bulldozers, excavators, loaders, etc., during the use of the chain may occur fragmentation, pinch fragmentation and other failures. As the chain link pin and pin, sleeve and pin sets are interference fit, and the relatively large amount of interference, usually between 0.15 ~ 0.35mm, coupled with the structural characteristics of the link, therefore, the failure Chain rail repair is more difficult. In practice, we have gradually mastered a set of simple and practical repair methods. The basic points are: First, the fault component is adjusted to the guide wheel position, and then cut with acetylene gas, supplemented by sledgehammer, jack and other tools, remove the components, put on new pieces.