Design of an Energy-Intensive Pneumatic Hammer Based on the Physical Simulation of the Hammer-Soil Interaction
V. V. Chervov, I. V. Tishchenko, A. V. Chervov, Yu. V. Vanag
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: Pneumatic hammer, percussion masses, elastic valve, air pressure, impact frequency, impact energy, air flow rate, soil
Abstract
The experience of high-frequency pneumatic hammer design to run on increased compressed-air pressure is reviewed. Arrangement of a coupled shock-pulse generator composed of two pneumatic hammers is described, and its stable operation conditions are determined. The synchronized operation of the hammers in the coupled generator is implemented through smooth percussion frequency control of one of the hammers. After the accomplished research into interaction between soil and some prototype models with two percussion masses, a fully phase- and frequency synchronized machine has been designed.
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