Analyze the Wear Mechanism of the Longwall Shearer Haulage System

Abstract

The wear characteristics and related mechanisms of the Longwall Shearer Haulage System were investigated. Wear is one of the main reasons for failures and downtimes. This knowledge can help solve engineering problems. The research was carried out at a laboratory station and a test stand. The publication presents the results of tribological tests carried out in laboratory conditions. The aim research was to select the alloy intended for casting the toothed segments of the haulage system. The track wheel was made by the forging method using steel 20H2N4A. Haulage System was tested on the ground using a longwall shearer. Selected toothed segments were subjected to tests on this stand. The cooperation of the track wheel and toothed segments in the tootbar were analyzed by a 3D scanner. Debris chemical composition was also appointed, as well as mass loss of toothed segments. The developed solution toothed segment an increase in the service life of the track wheel in real conditions. The results of the research also contribute to reducing the operating costs of the mining process.

Experimental study on shearer traction vibration considering attitude disturbances

“…With the objective functions of the coal loading rate, cutting ratio energy consumption and cutting load, Liu et al established an optimization model for the traction speed of the shearer, providing a theoretical reference for achieving collaborative control between the cutting units and the traction units [ 11 ]. Based on friction and wear tests, Jaskowiec et al [ 12 ] analyzed the adhesive wear, three body wear and fatigue wear mechanisms of the hauling wheel and the rail, and emphasized that the wear rate in the rail bending area is 2.5 times higher than that in the straight area. Kotwica et al [ 13 ]reported a new track in the chainless traction system that mitigates hauling wheel tooth profile failure.…”