Enhancement of Energy Carrier Performance in Air Hammers in Underground Construction
B. N. SMOLYANITSKY, V. V. CHERVOV
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: air hammer, elastic valve, air flow, blow frequency, blow energy
Abstract
The article concerns with the problem of blow energy increase at the confined air consumption in air hammers used in special underground construction. The solution is the air distribution circuit with an elastic ring valve installed in the back stroke chamber; the valve is closed under mechanical contact with the air hammer housing and opens under action of the elastic force of the material the valve is made of. The use of such valve enables relief of the backward pressure during the direct stroke of the hammer and allows the back stroke length adjustment, which ensures the constant blow energy at the varied air flow.
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