针对采煤机扭矩轴更换成本过高问题,通过修改过载保护的结构,用直齿端齿盘结构传递扭矩,利用端齿传递动力产生轴向力,使过载时轴向力带动轴向位移的特点,使轴脱开端齿盘,断开过载冲击的传递。避免整体更换扭矩轴,以降低煤矿井下的维护成本。 Aiming at the problem of high replacement cost of the torsion shaft of shearer, by modifying the structure of overload protection, transmitting the torque with the straight-toothed chainring structure and using the end teeth to transmit power to generate the axial force so that the axial force will drive the axial displacement Features, the shaft off the chainring, disconnect the overload impact transmission. Avoid replacing the torque shaft as a whole to reduce maintenance costs in coal mines.