Stress Distribution in Attachments of Disc Cutters in Heading Drivage
L. E. MAMET’EV, A. A. KHORESHOK, A. M. TSEKHIN, A. YU. BORISOV
, ul. Vesennyaya 28, Kemerovo, 650000 Russia
Keywords: забойный массив, проходческий комбайн, исполнительный орган, коронка, призма, узел крепления, дисковый инструмент, моделирование, напряженное состояние, face rocks, heading machine, tool, drill bit, prism, attachment, disk tool, modeling, stress state
Abstract
The authors substantiate new engineering designs for selective heading machines and cutter-loaders fitted with screw-type cutters. It is proposed to use biconical and conical disc tools and their attachment units to polygonal prisms to equip both bits of heading machines and screw cutters of cutter-loaders to cut structurally heterogeneous rock mass. It is recommended to practise reverse-mode operation of universal radial-type drill bits fitted with disk tools mounted on triangular prisms with a view to widen the front of loading to be imposed on sidewalls. The presented data on modeling stress sate of disk tools and variants of their attachments to polygonal prisms show the mechanisms of loading of related parts in the course of rock cutting.
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