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矿ＷＫ－４型电动挖掘机在使用中铲杆端部横梁及 我附着缓冲器的起重臂底板经常开裂，而且经焊接之后反复开裂，加大了维修工作的强度和难度，缩短了昂贵的铲杆和起重臂的寿命，影响了挖掘机的生产效率。 １ 原因分析 缓冲器的端面是一层厚钢板，缓冲器的缓冲行程，即端面钢板
Mine WK-4 electric excavator in use at the end of the beam beam and my buffer attached to the boom floor often crack, and repeated cracking after welding, increasing the intensity and difficulty of maintenance work, reducing the expensive The lifespan of shovels and jibs affects the productivity of excavators. 1 Analysis of the reasons for the buffer is a layer of thick steel plate, the buffer buffer stroke, that the end plate