对清筛机的扒碴工作原理目前还研究不够，本文提出了剪切、冲击扒碴原理，导出了确定扒碴功率的公式。
In this paper, the theory about shear and clash in harrowing ballast is suggested and the formulae for determining the power of harrowing ballast are deducted.
物料进入破碎机后，被高速旋转的锤头冲击而破碎，破碎后的物料通过下部筛条槽孔排出。
When material enters the crusher, it is impacted by a high speed rotating hammerhead to crush, and the crushed material is discharged through the bottom sieve bars.
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