Extended-range hybrid power transmission mechanism of amphibious vehicle

The invention belongs to the technical field of transmission devices, and particularly discloses an amphibious vehicle extended-range hybrid power transmission mechanism which comprises a shell, a driving shaft is arranged in the shell, one end of the driving shaft penetrates out of the shell, and the other end of the driving shaft penetrates out of the shell and is fixedly connected with a pushing blade. A suction cavity is formed in the shell, and an impeller located in the suction cavity is fixedly connected to the surface of the driving shaft; the propelling assembly is arranged on the surface of the shell, and the propelling assembly is used for enhancing the power for driving in water; by arranging the water inlet assembly, water can normally penetrate through filter holes in a connecting frame, impurities are intercepted, the impurities are prevented from entering the suction cavity to affect the impeller, the service life of the device is prolonged, meanwhile, water inlet grooves in the two sides can