一、原结构存在的问题 S116混砂机中间传动轴的结构见附图。混砂机立轴1由电动机经速比为1:10的双级齿轮减速箱、固定在中间轴5上的小伞齿轮3、固定在立轴上的大伞齿轮2带动旋转。中间轴由滑动轴承7支承。按制造厂提供的技术资料,这些传动部件分别直接装在混凝土的单独基础上。中间轴与减速箱之间由夹壳式联轴器联结。这种联轴器要求两轴的同轴度较高,且在 I. Problems existing in the original structure The structure of the intermediate drive shaft of the S116 mixer is shown in the attached drawing. The vertical shaft of the sand mixer 1 is driven by a double-stage gear box with a 1:10 speed ratio of the motor, a small bevel gear 3 fixed on the intermediate shaft 5, and a large bevel gear 2 fixed on the vertical shaft. The countershaft is supported by a slide bearing 7 . According to the technical data provided by the manufacturer, these transmission components are directly installed on a separate foundation of the concrete. The intermediate shaft and the reduction gear box are connected by a clamp type coupling. This coupling requires a high degree of coaxiality between the two axes and is