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Journal of Mining Sciences

2017 year, number 5

Procedure, Algorithm and Program for Selecting Basic Parameters of Hydraulic Hammering Systems

L. V. GORODILOV, D. V. VAGIN, T. B. RASPUTINA
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: гидроударная система, критерии подобия, характеристики предельных циклов, графический интерфейс, hydraulic hammering system, similarity criteria, limit cycle characteristics, graphical interface

Abstract

The article presents the procedure and algorithm for selecting basic characteristics of a positive-displacement hydraulic hammering system. The procedure is based on the dimensional analysis of equations of the system, selected similarity criteria and calculations of output characteristics in the space of the similarity criteria. The program offers a user the options of setting initial parameters and characteristics of hydraulic impact systems in the form of values and constraints and, then, table values for the dimensionless characteristics to be inserted in the similarity formulas for the selection of a hydraulic impact system. For a selected system, geometry of the hammer head is calculated. The Java-based program has a graphical multi-window interface, including menu, toolbox, windows for setting parameters, and limitations, input of source data and calculated data, computation of hammer head sizes and output of plotted dynamic characteristics of limit cycles of the hydraulic system.