Accumulation preventing device for rice-wheat combine harvester with function of baling

The invention provides an accumulation preventing device for a rice-wheat combine harvester with a function of baling. The accumulation preventing device comprises a driving shaft, a threshing cylinder straw outlet, a material passage, a straw shifting mechanism and a baling device. The material passage comprises a material passage bottom plate and two material passage side plates, a material passage inlet is connected with the threshing cylinder straw outlet, and a material passage outlet is connected with the baling device. The straw shifting mechanism is arranged in the upper portion of the material passage and comprises a crankshaft, a connecting rod, shifting forks and a rocker; one end of the crankshaft is connected with the driving shaft while the other end of the crankshaft is connected with one end of the connecting rod through a rotary pair; the other end of the connecting rod is connected with one end of the rocker through a rotary pair; the other end of the rocker is fixed onto a frame; the shifti