Drill rod detection tool

The invention discloses a drill rod detection tool which comprises a drill needle and a hammering assembly. The upper end face of the drill needle is a plane The hammering assembly is used for enabling the lower end of the drill needle to extend into the ground through hammering. The hammering assembly comprises a guide shaft, a limiting part, a positioning sleeve and a heavy hammer. The guide shaft is a rigid long shaft extending in the longitudinal direction. The limiting part is arranged at the upper end of the guide shaft and protrudes out of the guide shaft in the radial direction. The positioning sleeve is fixedly connected to the lower end of the guide shaft and can be connected to the upper end of the drill needle in a sleeving mode, and both the contact surface between the positioning sleeve and the drill needle and the top face of the positioning sleeve are planes. The heavy hammer is arranged on the guide shaft in a sleeving mode and can move up and down in the axial direction of the guide shaft. The inner diameter of the heavy hammer is smaller than the inner diameter of the limiting part and the inner diameter of the positioning sleeve. A first boss is arranged at the upper end of the heavy hammer. A second boss is arranged at the lower end of the heavy hammer. A handle part is arranged between the first boss and the second boss. The lower end face of the second boss is a plane. The drill rod detection tool can be operated by a single person conveniently, the drill needle is not prone to inclination, and accordingly construction quality and safety are improved.