Study and Practice on Eliminating Overconstraint to Reduce Sensitivity to Error in Blast Furnace Taphole Drill

摘要

In this paper, aimed at bad robustness of taphole drill of 1200M~3 blast furnace in a iron & steel works, analyze overconstraint of the mechanism, which is closed-chain six-bar mechanism, then discuss its structure design to eliminate overconstraint, and present non-overconstraint basic links combinations and their configuration pattern, combined with working characteristic and movement precision requirement of taphole drill, select desired configuration pattern, in this way, the machine runs smoothly, its efficiency is high.