Simulation analysis of shearer drum cutting coal-rock under oblique cutting conditio

Abstract

In order to study movement rule and force characteristic of shearer drum under oblique cutting condition, virtual prototype model of shearer under oblique cutting condition was established by use of ADAMS, and movement curve of shearer drum was obtained through motion simulation, which was used as drum movement boundary condition. LS-DYNA was used to simulate shearer drum cutting coal-rock under oblique cutting condition, and force characteristic of drum under oblique cutting condition was obtained. The simulation results show that cutting resistance and traction resistance of drum gradually increase and eventually become stable under oblique cutting condition, and the cutting resistance is 2 times as much as the traction resistance. Axial force of drum first increases and then decreases, the maximum axial force occurs when axial displacement of drum reaches the maximum, and the axial force and axial displacement of drum are closely related. Torque of drum is mainly generated by the cutting resistance and the axial force, and change trend of the torque is consistent with that of the force generating the torque.

Keywords

• coal mining
• shearer
• drum
• oblique cutting feed
• cutting coal-rock