Simple rotary digging driller

A simple rotary drilling rig mainly comprises a drilling rig chassis capable of moving along transversal and longitudinal directions, a hydraulic power station system, a drilling rig master control system, a drill rod master winch, a drilling rig secondary winch, a drilling rig portal frame, an expanding drill rod, a drill rod boosting cylinder, a drill rod tractor, a drilling bucket, a drilling bucket buffer spring, a drilling rig chassis-supported cylinder, a master winch pulley, a secondary winch pulley, a drill rod drive means, and a drill stand-supported cylinder. The utility model has the advantages of advanced technology, less environmental pollution, rapid perforation, low noise, large torque, light weight, wide-range regulation, flexible use, high construction quality, and low maintenance cost.