Coordination of Pneumatic Percussion Unit and Pneumatic Removal Channel in Horizontal Hole Drilling Machines
B. B. DANILOV, B. N. SMOLYANITSKY
N.A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: pneumatic percussion unit, hole, soil, main removal channel, exhaust line, exhaust back pressure
Abstract
The authors study work process of pneumatic percussion units with valveless air distribution under exhaust back pressure in drilled solid removal in long horizontal hole drilling machines. It is shown that range of efficient values of the machine performance equal to maximum percussion force does not change under increase in the exhaust back pressure.
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