Self-harvesting propulsion type lotus root digging machine

The invention discloses a self-collection propelling type lotus root digging machine which comprises a ship body, an oil tank, a collection driving assembly, an advancing driving device, a collection assembly, a digging assembly and a water spraying assembly. The forward driving device is mounted at the bottom of the stern; the collecting bin is installed at the top of the stern, one end of the collecting assembly extends into the collecting bin, the other end of the collecting assembly penetrates through the ship body and extends into the bottom of the ship body, and the collecting driving assembly is in transmission connection with the collecting assembly; the digging assembly penetrates through the ship body and extends into the bottom of the ship body, and the digging assembly is in transmission connection with the end, extending into the bottom of the ship body, of the collecting assembly. The collection driving assembly and the digging assembly are both connected with the oil tank; the water spraying as