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6—UPU electric platform was analyzed considering of the different points of the structural type. An integrated dynamic model of 6—UPU electric platform was built and written to general form based on kinematics analysis, considering of centroids of electric actuator deviating the axes of themselves and snail-mechanism going around the axes of themselves. Taking the heavy load electric platform with low speed as example, both integrated and simplified dynamics model were emulated and analyzed. The reasonability of the simplified condition of dynamics model was verified. The error tolerance was within 1% to 2.2%. A numerical example showed that this model had universality for the move platform of the similar mechanisms.