Harvesting excavator for root-tuber crops

The invention relates to a harvesting excavator for harvesting root-tuber crops and belongs to the technical field of agricultural machinery equipment. The harvesting excavator consists of a rack, a speed reducer, a mounting frame, a front digging blade and a rear digging blade, wherein the speed reducer is fixedly mounted at the front end of the rack; a crankshaft A and a crankshaft B are symmetrically mounted on the rack at the rear end of the speed reducer through the mounting rack; a speed reducer output power transmitting device is mounted on the rack between the crankshaft A and the crankshaft B and the speed reducer; one end of the speed reducer output power transmitting device is connected with the speed reducer, and the other end of the speed reducer output power transmitting device is connected with the crankshaft A and the crankshaft B. The harvesting excavator is simple in structure and good in practicality; the harvesting efficiency can be effectively improved, and the labor intensity is reduced;