Abstract
the coal mining machine cutting part of each part of the high system in a certain period of time is the more stable, but the coal mining machine cutting part high system that connects the hydraulic lever and coal winning machine shell below support ear pin shaft and set of often appear wear phenomenon. Pin shaft and set of relative to the coal mining machine cutting part raise system for other parts of the system is the whole raised key parts, counter axis and the ring was finite element fatigue analysis is very necessary.
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