掘进机截齿截割过程中,由于破碎岩石的渐进性、突变性和重复性等特点,使得具有间隙非线性特征的截齿动力学特性变得格外复杂。本文通过对截齿进行受力分析,建立其沿切向截割时的非线性动力学模型,并仿真出不同间隙时截齿的位移和加速度曲线,通过和实测曲线对比,验证了模型的合理性,为截齿间隙的确定提供了理论依据。 Due to the characteristics of gradual, sudden change and repeatability of crushed rock, the kinematic characteristics of picks with non-linear gap characteristics become extremely complicated. In this paper, the force analysis of the picks is used to establish the nonlinear dynamic model of the picks along the tangential direction and to simulate the displacement and acceleration curves of picks with different clearances. The comparison with the measured curves shows that the model is reasonable It provides a theoretical basis for the determination of the clearance of picks.