Corn straw smashing device

The utility model belongs to the technical field of agricultural machinery, and particularly relates to a corn straw smashing device which comprises a base, a smashing box is fixed to the top of the base, a first motor is fixed to one side of the smashing box, and the interior of the smashing box is rotationally connected with a smashing rod through a bearing; the outer surface of an output shaft of the first motor is rotationally connected with a transmission belt. A second motor is started, so that the second motor drives a first driving gear to rotate, the first driving gear drives a first driven gear and a second driven gear to rotate, and the first driven gear and the second driven gear drive a first crushing rod and a second crushing rod to rotate; according to the corn straw crushing device, the corn straw can be preliminarily crushed, meanwhile, the first motor is started to drive the transmission belt to rotate, the transmission belt drives the crushing rod to rotate, and then the crushing rod deeply