MINING EQUIPMENT

Original paper

UDC 622.232 © O.S. Reshetnikova, K.B. Kyzyrov, G.S. Zhetesova, V.V. Yurchenko, O.M. Zharkevich, D.A. Ashimbayev, 2025

ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2025, № 2, pp. 93-99

DOI: http://dx.doi.org/10.18796/0041-5790-2025-2-93-99

OPTIMIZATION OF THE HYDRAULIC HAMMER OPERATING CYCLE WITH COMBINED CONTROL UNIT

Authors

O.S. Reshetnikova, K.B. Kyzyrov, G.S. Zhetesova, V.V. Yurchenko, O.M. Zharkevich, D.A. Ashimbayev

Abylkas Saginov Karaganda technical university, Karaganda, 100027, Republic of Kazakhstan, e-mail: zharkevich82@mail.ru

Authors Information

Reshetnikova O.S. – PhD, Acting Assistant Professor of the Department “Technological equipment, engineering and standardization”, Abylkas Saginov Karaganda technical university, Karaganda, 100027, Republic of Kazakhstan, e-mail: olga.reshetnikova.80@mail.ru

Kyzyrov K.B. – PhD (Engineering), Professor of the Department “Technological equipment, engineering and standardization”, Abylkas Saginov Karaganda technical university, Karaganda, 100027, Republic of Kazakhstan, e-mail: kyzyrovkairulla@gmail.com

Zhetesova G.S. – Doctor of Engineering Sciences, Professor of the Department “Technological equipment, engineering and standardization”, Abylkas Saginov Karaganda technical university, Karaganda, 100027, Republic of Kazakhstan, e-mail: zhetesova@mail.ru

Yurchenko V.V. – PhD, Head of the Department "Technological equipment, engineering and standardization", Abylkas Saginov Karaganda technical university, Karaganda, 100027, Republic of Kazakhstan, e-mail: juvv76@mail.ru

Zharkevich O.M. – PhD (Engineering), Professor of the Department “Technological equipment, engineering and standardization”, Abylkas Saginov Karaganda technical university, Karaganda, 100027, Republic of Kazakhstan, e-mail: zharkevich82@mail.ru

Ashimbayev D.A. – Doctoral student of the Department “Technological equipment, engineering and standardization”, Abylkas Saginov Karaganda technical university, Karaganda, 100027, Republic of Kazakhstan, e-mail: ashimbaev.damir@yandex.kz

Abstract

The article synthesizes the design scheme of a hydraulic impact mechanism (HIM) with a combined control body, and also constructs the main characteristics of the working cycle: an indicator diagram of the pressure change in the working stroke controlled chamber [P = f(x)], phase control [R = f(x)] and a phase portrait [v = f(x)]. As a result of the studies of the energy content of the working cycle phases such as idle and working strokes, fluid inlet and outlet from the controlled working stroke chamber (WWSCh), the functional dependencies of the indicated efficiency (hin), the compactness index of the chamber design volume (?W), the piston-striker working stroke (s) of the HIM were established. The HIM initial parameters are the energy Ai and the frequency f of impacts; the working pressure of the base machine hydraulic drive Pp, and the modulus of elasticity of the working fluid Ef. By optimizing the working cycle according to the pressure drop coefficient k = ?Р/Рp at the working fluid inlet and outlet from the WWSCh, the ideal working cycle rational parameters have been established, which are recommended for calculating the design parameters of the HIM: k = 0.4; hин = 0.75; ?W = 4.17.

Keywords

Hydraulic impact mechanism, working cycle, indicator diagram, phase portrait, phase control, pressure stabilizer, massless piston, elastic modulus.

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Acknowledgements

This research is financed by the Committee for Science of the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant AP19680121 “Development of compositions of sand-polymer composite materials and technological support of their processing into mechanical engineering products”).

For citation

Reshetnikova O.S., Kyzyrov K.B., Zhetesova G.S., Yurchenko V.V., Zharkevich O.M., Ashimbayev D.A. Optimization of the hydraulic hammer operating cycle with combined control unit. Ugol’. 2025;(2):93-99. (In Russ.). DOI: 10.18796/0041-5790-2025-2-93-99.

Paper Info

Received November 15, 2024
Reviewed January 17, 2025
Accepted January 27, 2025