Steel pipe column mounting and positioning device for cover and excavation section of foundation pit

The utility model discloses a foundation pit cover excavation section steel pipe column installing and positioning device which comprises a directional base station device, a directional auxiliary device and a steel pipe column to be installed and positioned, the directional base station device comprises a guide table, a sliding mechanism and a lifting mechanism, the sliding mechanism is arranged on the guide table, and the lifting mechanism is arranged on the guide table. A steel pipe column is arranged on the sliding mechanism through the lifting mechanism and does circumferential movement on the guide table through the sliding mechanism. The orientation auxiliary device comprises a positioning ring, a positioning cable and a pile casing; the positioning ring comprises a steel pipe column ring, an anchor cable ring and a ground surface ring, the steel pipe column ring is opposite to the anchor cable ring in mounting position, the mounting positions of the anchor cable ring and the ground surface ring and th