1.下平衡轴与机油泵轴的联接现有结构为机油泵转子轴端长方榫直接嵌在下平衡轴轴端的长槽内,由平衡轴驱动旋转。由于工作中承受着各种力的作用,长方榫与长槽之间发生交变而频繁的冲击,长槽很快就磨损成椭圆形,长方榫很快也磨成棱形,造成平衡轴旋转时不能驱动机油泵旋转而停止泵油的故障。因此,常常仅使用半年就要更换一个机油泵总成和一根下平衡轴,很不合算。 1. The lower balance shaft and the oil pump shaft coupling existing structure of the rotor shaft end of the oil pump is directly embedded in the lower end of the balance shaft shaft slot, driven by the balance shaft rotation. Due to the role of a variety of forces in the work, alternating between the rectangular tenon and the long groove frequent impact, the slot soon wear oval, rectangular tenons quickly ground into a prism, resulting in balance When the shaft is rotating, it can not drive the oil pump to rotate and stop the oil pump. Therefore, it is often uneconomical to replace an oil pump assembly and a lower balancer shaft with just six months.