Effect of nonuniform loading of cutting tools on operational stability of cutter–loaders and on selection of power of motors

When coal cutter–loaders cut coal seams enclosing very many large solid inclusions and hard dirt beds, which is typical of coal mines in Kuzbass, the coal cutting process results in the increased dynamic loading of cutting tools. Such loading can reach a critical level, and a group of cutter supports can fail in the same cutting line. It is experimentally proved that as cutter supports fail and with increasing advance speed of a cutter–loader, the ranges of power consumed by the cutter–loader motors grow, which negatively affects stable electromagnetic moment and stable power of motors. This article presents relations for calculating stable power and electromagnetic moment of motors for cutter–loaders meant for cutting seams of complex structure. When loading of cutting tools in cutting hard dirt beds and large solid inclusions in coal exceeds the maximum permissible level, stability of cutter–loaders is violated. The formulas are proposed for calculating stability of cutter–loaders based on the maximal possible values of external loads generated in cutting of complex structure seams.

Zakharov V. N., Linnik Yu. N., Linnik V. Yu., Zich A. Effect of nonuniform loading of cutting tools on operational stability of cutter–loaders and on selection of power of motors. MIAB. Mining Inf. Anal. Bull. 2021;(5):24-34. [In Russ]. DOI: 10.25018/0236_1493_2021_5_ 0_24.

V.N. Zakharov, Corresponding Member of Russian Academy of Sciences, Dr. Sci. (Eng.), Professor, Institute of Problems of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, 111020, Moscow, Russia,
Yu.N. Linnik¹, Dr. Sci. (Eng.), Professor,
V.Yu. Linnik¹, Dr. Sci. (Econ.), Assistant Professor, Professor, e-mail: vy_linnik@guu.ru,
A. Zich, Dr. Sci. (Eng.), Professor, Freiburg Academy, Consultant in the Field of Energy Efficiency, MS QF GmbH, Oderwitz, Germany,
¹ State University of Management, 109542, Moscow, Russia.

V.Yu. Linnik, e-mail: vy_linnik@guu.ru.

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