The Rotary Multi-Plate Valve as an Integrated Control System of a Longwall Roof Support

Organization: The Australasian Institute of Mining and Metallurgy
Pages: 3
Publication Date: Jan 1, 1985
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An automatic control system of a longwall roof support is dis-cussed. Hydraulic automatic control systems for longwall roof support have not met all requirements for such systems. Utilization of standard hydraulic elements to form a system that would-comply with all demands leads to a very complicated structure with a large number of hydraulic hoses within and between adjacent supports. So, only simplified systems have been made. This paper describes the multifunctional valve that per-mits realization of any desired logic functions, while maintaining a com-pact form, and analyses its application as a fully hydraulic automatic control system of a roof support.
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