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电铲在挖掘作业中，铲斗底门承受着很大的静载荷于冲击载荷；铲斗装卸矿岩时，斗底门受到剧烈磨损，所以要求底门不但要具备足够的强度和刚度，还要具有良好的耐磨性。1原斗底门存在的缺陷原斗底门的结构如图1部分所示，它由两块厚度为16mm锰钢板铆接而成。这种结构的斗底门其?
Electric Shovel In digging operation, the bottom gate of the bucket is subjected to a large static load at impact load. When the bucket is loaded and unloaded with ore, the bottom gate is subjected to severe wear and tear. Therefore, the bottom gate is required not only to have sufficient strength and rigidity, To have good wear resistance. 1 the original bucket door at the end of the defect bucket door at the end of the structure shown in Figure 1 part, which consists of two thicknesses of 16mm manganese steel riveted together. This structure of the bottom door?