Crankshaft lever type transmission device

The invention belongs to the field of mechanical transmission, and particularly relates to a crankshaft lever type transmission device. The crankshaft lever type transmission device comprises a primecrankshaft, levers and a tail end driven shaft, wherein the prime crankshaft is a three-section crankshaft, the distance between every two sections is one third of the circumference, three connectingrod journals of the three-section crankshaft are hinged to prime ends of the three levers through bearing belt bases and sliding blocks respectively, driven ends of the three levers are hinged to thetail end driven shaft in parallel through one-way bearing belt bases respectively, the prime crankshaft is divided into a front end main shaft and a tail end main shaft, the front end main shaft and the tail end main shaft are hinged to two fixed supporting points through bearing belt bases respectively, and the two ends of the tail end driven shaft are hinged to two fixed supporting points through two bearing belt bases. A