This paper points out the incompleteness of the fuel line in diesel rock drill, then the structure of the fuel line is improved and the quality of diesel rock drills is improved greatly.

• 针对某型内燃凿岩机开箱合格率低、操作过程中技术指标不稳定等因素,经认真分析、研究,认为油路不畅是主要原因,故对其油路结构进行了改进,经用户试用,效果良好。