Small-sized earth and sand excavation collection dust discharging fan

摘要

(57) Abstract (Modified) Objective The concrete and the earth and sand etc are dug even at the narrow place,The small-sized earth and sand excavation collection dust discharging fan which you obtain is offered. Constitution Pinion gears 6, through Drive gear 7, the cutter- Drive 1 and cutter 2 with electric motor 4. Time of cutterRevolution becomes opposite direction mutually, cutter 1 and cutter 2 counterOperation is offset. The dust exhausting opening is provided in the drilling machine.