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1.故障现象1台小松220-8型挖掘机配置的MKB1600型破碎锤,其钢钎不触地时破碎锤打击无力,触地后无打击动作。2.工作原理MKB1600型破碎锤由滑阀、活塞、氮气室、相关管路及缸体等组成,如图1所示。破碎锤完成上一次冲击,开始下一次冲击分为4个阶段,如下所述:(1)活塞到达下止点破碎锤完成上一次冲击、处于瞬时停顿状态时,活塞在下止点,滑阀处于上止点,滑阀将V_1腔打开。V_1腔通挖
1. Symptom 1 Taiwan Komatsu 220-8 excavator configured MKB1600-type hammer, the drill when the hammer does not touch the hammer hit the weak, no strike action after touchdown. 2. Working principle MKB1600-type hammer from the spool valve, piston, nitrogen chamber, related piping and cylinder and other components, shown in Figure 1. Breaking hammer to complete the last impact, the next impact is divided into four stages, as follows: (1) the piston reaches the bottom dead center Breaking hammer to complete the last impact, in the instantaneous standstill, the piston at the bottom dead center, the spool in Top dead center, the slide valve opens the V_1 chamber. V_1 cavity digging