Installation for Research of Coal Cutting Process in Regimes with Constant Cutting Speed and with Constant Power Exposure
At underground coal mining in clearing faces mechanized plowing complexes and cleaning combines are generally used. Still one of the main issues arising at coal mining by these mining machines is the problem of increase in productivity of clearing complexes and also a problem of minimization of costs of production (decrease in power consumption). Increase in productivity of combines is reached not only due to increase in installed power per employee of working mechanisms and constructive decisions on executive bodies, but also by optimization of an operating mode of the extraction machine, in the conditions of the variable durability of the destroyed massif. The experimental method of researching coal cutting is used because of cutting process complexity and it’s multiple factor dependence from rock structure, it’s strength properties, cutting pick, cutting mode and uneven force distribution on cutting pick. The study of cutting on a full-sized bench makes it possible to understand how the loads in the cutter-rock system are distributed in real time, which also allows optimizing the operating mode, taking into account the changing strength of the rock. In view of the complexity and multifactor dependence of the cutting process on the structure and strength properties of the array, on the cutting regime and the parameters of the cutter, as well as the uneven distribution of forces on the tool, an experimental method for studying coal cutting is used. The study of cutting on a full-sized bench makes it possible to understand how the loads in the cutter-rock system are distributed in real time, which also allows optimizing the operating mode, taking into account the changing strength of the rock.