Potato seed anti-blocking pushing device of potato seeder

The invention provides an anti-blocking potato seed pushing device of a potato seeder, which is characterized in that a potato seed box is mounted on a seeding unit of the potato seeder, and an isosceles trapezoid opening is formed in a bottom plate; an eccentric shaft, provided with a bearing, of the driving assembly is supported on a rack of the potato seeder, a shifting shaft, provided with a shifting pin, of the driving assembly is supported on a bottom plate, and the shifting pin is fixedly connected with an outer ring of the bearing; a locking pin of the pushing device is installed on a bottom plate of the potato seed box, a pushing grid plate of the pushing assembly is installed in a trapezoid frame, a long sleeve of a sleeve frame is arranged on a shifting shaft of the driving assembly in a sleeving mode, the two ends of a short sleeve are hinged to the bottom edge of a long trapezoid of the trapezoid frame, a sliding plate is installed at one end of the bottom edge of a short trapezoid of the trapezo