Development of a Hydraulic System for the Automatic Expansion of Powered Roof Support


Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.3390/en15030680

Ключевые слова: hydraulic leg, hydraulic system, powered roof support, tests under real conditions, work automation

Аннотация: A mechanical support in a longwall complex requires proper supervision and control of operating parameters because it is responsible for the safety of machines and workers. Its main functions are to protect the excavation against the adverse effects of rock mass and to move it along with the operational progress of the shearer and Показать полностьюthe scraper conveyor. In the era of Industry 4.0 as well as green economy and sustainable development, the development of machines and devices included in the longwall complex is an important area of invention. When it comes to the mechanical support included in the longwall complex, the authors propose changes to the hydraulic control system. The main purpose of the work was to develop a system that can automatically expand the legs of the powered support. Tests were carried out under real conditions while equipping the support section with a prototypical hydraulic system and with a system monitoring the correct operation of the prototype. This article presents the development of a prototypical installation under real conditions for testing on a longwall. The innovative solution proposed by the authors consisted of introducing a prototypical double valve block into the hydraulic system of the housing, which enables the function of automatic section expansion. The authors proposed a solution aimed at shortening the work time of the powered-support-section operator. The research results made it possible to evaluate the usefulness of the proposed solution. This type of solution can be considered technical support in the process of coal mining in an underground mine. Analysis presented in this paper, along with results from research conducted and its conclusions, can be of practical help to enclosure users to improve reliability and achieve optimal performance. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

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Журнал: Energies

Выпуск журнала: Vol. 15, Is. 3

Номера страниц: 680

ISSN журнала: 19961073

Издатель: MDPI


  • Szurgacz D. (Center of Hydraulics DOH Ltd., ul. Konstytucji 147, Bytom, 41-906, Poland, Polska Grupa Górnicza S.A., ul. Powstańców 30, Katowice, 40-039, Poland)
  • Borska B. (KWK Ruda Ruch Halemba, ul. Halembska 160, Ruda Ślaska, 41-717, Poland)
  • Diederichs R. (Center of Hydraulics DOH Ltd., ul. Konstytucji 147, Bytom, 41-906, Poland)
  • Zhironkin S. (Department of Trade and Marketing, Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, 660041, Russian Federation, Department of Open Pit Mining, T.F. Gorbachev Kuzbass State Technical University, 28 Vesennya Str., Kemerovo, 650000, Russian Federation, School of Core Engineering Education, National Research Tomsk Polytechnic University, 30 Lenina Str., Tomsk, 634050, Russian Federation)