Hydraulic square pile drill bit

The utility model belongs to the technical field of square pile drill bits, and particularly relates to a hydraulic type square pile drill bit which comprises a box body and a walking assembly, transmission shaft stations are arranged at the four corners of the bottom of the box body, transmission shafts are installed between the transmission shaft stations and clamps, and walking assembly stations are arranged in the middle of the interior of the box body. A crawler belt driven wheel is installed on the outer wall of the transmission shaft, wheel bodies are connected to the two ends of the transmission shaft, wheel digging pieces are arranged on the outer walls of the wheel bodies, the crawler belt driven wheel and the walking assembly are in transmission through a crawler belt, and belt digging pieces are arranged on the outer wall of the crawler belt. And the system is lower in energy consumption, more environment-friendly, more independent and more dependent on the outside. 本实用新型属于方桩钻头技术领域，具体为一种液压式方桩钻头，包括