抓捕器 2) broken belt protector 断带抓捕器 1. Introduce the structure and the working principle of PDB broken belt conveyor,and the test of PDBbroken belt protectorin mine,and make a summary of the testing result. 概述了煤矿井下滚筒驱动带式输送机输送带的应用情况与发展趋势及发生断裂的危害性...