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 a housing (with limiters) connected by a mechanical spring, a spool valve, 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 with instantly switching valve), the developed model was verified. Calculations of the working modes of reverse hydro-impact 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 equipment being developed can be used to overcome jamming of equipment during drilling and using of special equipment in drilled holes, and driving holes by impact method in ground.
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