论文部分内容阅读
在进行各种连杆结构比较的基础上，指出今后连杆结构的发展趋向。水平双切口连杆虽然可以彻底解决连杆大端尺寸受严格限制的问题，但要增加重量；最近研究出将缸套和连杆活塞组一起从缸套中拔出的解体方法则可在较大程度上解决这一问题，水平切口连杆特别是斜切口连杆存在着剖分面上锯齿形承压面的面积较大的问题。致使平均压紧力下降，尤其是在距紧固螺栓较远的局部位置易造成松动而引起微振磨损。为此可采用二维有限元法进行连杆大端应力、变形解析和轴承、轴承座及连杆剖分面相对滑动解析。通过计算和试验实例表明，解析结果与实测结果十分一致。作者认为，从安全性考虑，连杆结构的发展方向是由斜切口连杆向水平切口连杆转变。
Based on the comparison of various connecting rod structures, it is pointed out that the development trend of connecting rod structure in the future. Although the horizontal double-cut connecting rod can completely solve the problem that the connecting rod large-end size is severely restricted, but to increase the weight; Recently, the disassembly method that the cylinder sleeve and the connecting rod piston set are pulled out from the cylinder sleeve can be compared To a large extent, to solve this problem, the horizontal incision connecting rod, especially the oblique incline connecting rod, has the problem of larger area of serrated pressure bearing surface on the split surface. Resulting in the average pressure drop, especially in the local position away from the fastening bolts easily lead to loose and cause fretting wear. For this purpose, the two-dimensional finite element method can be used to analyze the large-end stress and deformation of the connecting rod and the relative sliding analysis of the bearing, the bearing seat and the connecting rod. Through the calculation and experimental examples show that the analytical results and the measured results are very consistent. The author believes that from the safety considerations, the direction of the development of the link structure is the transition from the miter link to the horizontal incision link.