SIMULATION MODEL OF A HYDRO-IMPACT SYSTEM WITH TWO LIMITERS OF STRIKER MOVEMENT
L. V. Gorodilov, A. I. Pershin
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Hydro-impact device, limiters, reverse mode of operation, impact power
Abstract
A simulation model of a one-way self-oscillating hydro-impact system with two limiters of striker movement has been developed. The system includes a pump (a constant flow source), a striker (piston) and body (with limiters) connected by a mechanical spring, a spool distributor, a gas-liquid accumulator, and connecting hydraulic lines. By comparing the results of calculations on the simulation model with the results of calculations on the “ideal” model (without hydraulic and mechanical losses and instantly switching distributor), the developed model was verified. Calculations of the operation modes of reverse hydraulic shock devices with an impact energy of 80 and 160 J were performed, their parameters were determined, and the real geometry of the devices was evaluated. The developed equipment can be used to overcome jamming of equipment during drilling and use of special equipment in already drilled holes, when driving workings by impact method in the ground.
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