Analyzed the problem that exist in suspension roof support, and presented the new type strong steel big-end bolt can solve this problem.
分析了普通金属锚桿存在的问题,并提出新型金属粗尾锚桿可以很好地解决这方面存在的问题。
The lubrication of crank bearings have a large influence on engine operation. In this paper, CFD simulation of connecting-rod big-end bearing lubrication is given.