The utility model relates to the technical field of
coal mine exploration, in particular to a transient electromagnetic
geophysical prospecting line frame rotating device for a
coal mine, which comprises two placing rods, a cross rod is fixedly connected to the surfaces of the two placing rods, a
protractor is rotatably connected to the side surface of the cross rod, and a rotating shaft is rotatably connected to the side surface of the
protractor. A measuring rod is fixedly connected to the surface of the rotating shaft, a rotating plate is fixedly connected to the side face of the measuring rod, a
wire frame body is fixedly connected to the side, away from the measuring rod, of the rotating plate, and a limiting device is arranged on the side, away from the
wire frame, of the
protractor and comprises a half gear. The half gear is fixedly connected to the end, away from the protractor, of the rotating shaft, and a mounting rod is fixedly connected to the side, close to the half gear, of the protractor. According to the utility model, the problem that the accuracy of a measurement result is influenced because the
wire frame is often required to be supported by a worker after the angle adjustment of the wire frame is completed and is difficult to ensure that the wire frame does not deflect is solved.