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冷剪曲轴为静不定结构时,各支点受力大小与三个滑动轴承的配合公差的选取以及轴承座的刚度直接相关。不合理的配合关系可能会导致曲轴或机架的破坏。本文通过对冷剪曲轴和机架建模后进行有限元分析,计算出曲轴和机架在中间滑动轴承处的最大许用载荷,按最大许用载荷分别计算出曲轴和机架的变形量,最终得出使曲轴和机架同时具有合理安全系数的滑动轴承配合间隙差值。
Cold shear crankshaft static indeterminate structure, the size of each fulcrum force with the three sliding bearings with the selection of tolerances and bearing stiffness is directly related. Unreasonable mating may result in damage to the crankshaft or frame. In this paper, crankshaft and the frame after the finite element analysis of finite element analysis to calculate the crankshaft and the frame in the middle of the maximum allowable bearing load, according to the maximum allowable load were calculated crankshaft and frame deformation, Finally, the result is a differential bearing clearance that allows the crankshaft and the frame to have a reasonable safety factor at the same time.