Drill rod detection device

The invention discloses a drill rod detection device. The drill rod detection comprises a drill rod and a guiding frame; the drill rod comprises an inserting calibrated rod and a hammering guiding rodwhich are arranged coaxially as well as a hammering disk arranged on the hammering guiding rod in a sleeving manner; the hammering disk and the hammering guiding rod are connected fixedly; the upperside of the hammering guiding rod is further sleeved with a steel hammer; through holes are formed in the hammering disk; rotating shafts rotationally connected with the hole walls of the through holes are arranged in the through holes; jacking rods are fixedly connected to shaft bodies of the rotating shafts; and the rotating shafts rotate to drive the jacking rods to jack the steel hammer and then release the steel hammer to enable the steel hammer to fall freely to hammer the hammering disk, so that the inserting calibrated rod is hammered into a to-be-surveyed soil layer. According to thedrill rod detection, the ja