A fault tree method was used to analyse the grab＇ structure and the function of feeding system and the reliability block diagram was presented. Take the grasping failure as top event,the minimum cut sets and minimal path sets were given out and the fault tree was established in the paper. The key parts and cause of the malfunction were found out after the importance analysis of the grab. Emulational simulation was performed with CAFTA, and then the reliability histogram was given out through calculation, and the grab failure was confirmed to b...
