Abstract
In order to solve the problems of deformation caused by traditional threshing rack applied to the variable-diameter cylinder, two high-strength threshing racks (truss-type threshing rack, reinforced plate-type threshing rack) were designed. Through statics quantitative analysis on the basis of theoretical analysis and finite element analysis and calculation conducted on the rigidity and strength characteristics of traditional threshing racks, truss threshing racks and reinforced plate threshing racks, it shows that the reinforced plate threshing rack with higher strength, simpler structure and lighter weight is more suitable for the operation requirements of variable diameter cylinders.
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