本发明是关于部分断面掘进机的过载保护装置,包括切割臂及旋转切割头。该掘进机的切割头按常规以一定的抗压强度设计悬臂的旋转速度和截齿的排列方式。如果切割头操作时的旋转速度与设计切割头的旋转速度不同,该掘进机将产生强烈振动,导致部件的损坏。当采掘硬度低或易碎物料时,切割头可高速旋转而不会超出所允许的振动范围。为了有效地提高本掘进机的工作效率并发挥其最大优越性,除了要考虑切割头的转速、注意截齿截岩外,还要调节其标准转速,以防止机器的损坏。 The present invention relates to an overload protection device of a partial cross-section heading machine, comprising a cutting arm and a rotary cutting head. The cutting head of the roadheader is designed with a certain degree of compressive strength of conventional cantilever rotation speed and pick arrangement. If the cutting head operates at a different rotational speed than the designed cutting head, the boring machine will vibrate strongly, causing damage to the components. When digging out low hardness or fragile materials, the cutting head can rotate at high speed without exceeding the allowed vibration range. In order to effectively improve the working efficiency of the boring machine and to maximize its superiority, in addition to considering the cutting head speed, pay attention to cutting the cuttings, but also to adjust its standard speed to prevent damage to the machine.