Abstract: Taking the crop drum-type flying shear by an ex-ample the paper introduced the optimal design methods for drive dynamic of machinery equipments which are worked in the condition interrupted continuasly subjected to the load. In this paper, the method of search for a min-max optimal problem is introduced, and the multiple-objective optimal algorithm which connected the hierarchical optimization criteria with the method of linear combination with various weights was used. Pareto-optimal solutions obtained by these methods are comparatively ideal.