Authors: A.B. Zhabin, I. Lavit, Z.E. Kerimov

Title of the article: Results of striker/tool interaction studies in percussive destruction of rocks

Year: 2021, Issue: 3, Pages: 48-53

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622.23.05

DOI: 10.26730/1816-4528-2021-3-48-53

Abstract: The paper considers a power impulse system of a percussion tool. It represents the results of calculation of a shock load acting on rock strata. This calculation is based on the developed mathematical model of interaction between the striker and the tool as a function of time. The paper also represents an example of calculation for a hydraulic impact machine G100 of the company “Rammer” (Finland). The use of the theory of dimensions and similarity allows to get regression dependence for dimensionless load on dimensionless impact velocity and geometrical parameters of the striker and the tool. The study shows that impact velocity is proportional to acting force, which raises with the length and cross-sectional area of the striker and the tool.

Key words: mathematical model striker percussive tool theory of dimensions and similarity dimensionless parameters impact velocity pressure force load regression dependence

Receiving date: 03.02.2021

Publication date: 13.07.2021

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