Drilling device for geotechnical engineering

The utility model discloses a drilling device for geotechnical engineering, which belongs to the technical field of geotechnical engineering and comprises a base plate, a plurality of arc-shaped openings with equal angles are formed in the outer wall of the circumference of the base plate, supporting legs are rotatably mounted in the arc-shaped openings, and traveling wheels are rotatably mounted at the bottom ends of the supporting legs. And a plurality of arc-shaped metal sheets are arranged on the circumferential outer wall of the walking wheel. A worker transports and moves the drilling device to a sampling position, rotates a plurality of supporting legs with equal angles to move outwards by a certain distance, puts down a mounting frame from a limiting clamping plate to enable a storage frame to be in contact with the ground, and places a part of balancing weights in a control box in the storage frame, so that a main plate sinks, and an auxiliary plate and a side plate expand outwards; the bottom thorns