INFLUENCE OF FRICTION IN THE ARMORED FACE CONVEYOR CHAIN ON DYNAMICS AND ENERGY EFFICIENCY

The range of values ​​of the coefficient resistance to movement chain typical longwall armored face conveyors and inner viscous friction in chain, both immersed moving load during idle run conveyor, is estimated. computer model conveyor built as a multi-mass elastic-viscous stretched closed without sag with number masses n = 200 one induction drive motor located head conveyor. Using constructed model, three-dimensional space-time dynamic characteristics speeds forces CP72 are obtained. Start up rated speed v≈1 m / s working process simulated an unloaded spatial form frictional self-oscillations distributed parameters shown. resonance frequencies amplitudes oscillations efforts circuit length corresponding waves have been determined. It was found that at first second frequencies, not excited, since damping effect electric quite pronounced this frequency band. direct connection vibration energy efficiency indicated.