一、我厂在试制柴油机的过程中,曾经因为连杆断裂而产生连杆打破机体的事故。经过分析,连杆体螺栓孔与盖的孔不同心以及连杆体螺栓孔与盖的顶面不垂直对连杆螺栓的断裂有很大关系,因为螺栓孔的不同心度和不垂直度能造成连杆头部受力不均和产生一种不应有的屈服力,使用时间长了,就容易造成连杆螺 First, I plant in the process of trial production of diesel engines, connecting rods have been broken because of the body to break the accident. After analysis, connecting rod bolt hole and cover the hole is not the same heart and the connecting rod bolt hole and the top of the cover is not perpendicular to the link bolt fracture has a great relationship, because the bolt hole of different concentricity and non-perpendicularity Resulting in uneven force connecting rod head and produce an undue yield force, use a long time, it is easy to cause connecting rod spiral