Directional monitoring device of long rod dose rate instrument

The utility model relates to the technical field of long-rod dose rate instruments, and provides a directional monitoring device for a long-rod dose rate instrument, which comprises a rod assembly, a support frame arranged on the rod assembly, a dose rate detection head arranged on the support frame, a cover body provided with a cavity, an opening arranged at the bottom of the cavity, and a positioning device arranged on the cover body, the dose rate detection head is arranged in the cavity, and the opening of the cover body is lower than the bottom of the dose rate detection head. The rod assembly comprises a rod body, the transverse frame is arranged at the bottom of the rod body, the sliding rod is arranged on the transverse frame, the supporting frame is arranged on the sliding rod in a sliding mode, the dose rate detection head slides along with the supporting frame, and the sliding driving device is arranged on the transverse frame and drives the supporting frame to slide. According to the technical sch