Abstract:

Abstract：A new type of luffing mechanism of hydraulic split type drilling rig in coal mine is designed, and the structure and working principle are introduced. In order to study the dynamic performance of the Luffing mechanism, established its mechanics model under two conditions of Adjustable Angle and normal drilling drilling rig. Based on MATLAB simulation analysis software to get two sets of adjustable Angle cylinder stress under different working conditions with shaft Angle and stress change of gyrator trajectory surface. Those achievements provide a kind of theoretical basis for the structural design of the luffing mechanism.

Key words: luffing mechanism, mechanical properties, mechanical model, stress state