Device and method for pulsating conveying of sand box

The invention relates to a device and a method for pulsating conveying of a sand box, and belongs to the field of casting and conveying equipment. The device for pulsating conveying of the sand box comprises a trolley track, a plurality of conveying trolleys with the same structure, a plurality of connecting rods and a hydraulic cylinder, the plurality of conveying trolleys with the same structureare all arranged on the trolley track, and the trolley track is arranged on the two sides of the conveying trolleys; each conveying trolley comprises a trolley frame, eight small trolley wheels and two groups of turnover pushing plates capable of freely rotating, the eight small trolley wheels are movably arranged on the trolley track, and the two groups of turnover pushing plates are all arranged on the trolley frame; and two conveying trolleys are connected through a connecting rod, and the hydraulic cylinder is connected with one conveying trolley. The invention further provides the convenient-to-operate method fo