Rotating device of deep hole drill carriage for coal mine

The utility model relates to the technical field of coal mine drilling machinery, and discloses a rotating device of a deep hole drill carriage for a coal mine, which comprises a bottom plate, a limiting mechanism and a rotating mechanism, the limiting mechanism is arranged at one end of the bottom plate and comprises a rotating plate rotationally connected with the bottom plate, the middle of the rotating plate is rotationally connected with a threaded rod, the side, away from the bottom plate, of the threaded rod is in threaded connection with a threaded sleeve, the end of the threaded sleeve is rotationally connected with a second top plate, ejection devices are arranged at the four corners of the bottom plate, and the output ends of the ejection devices are connected with the first top plate; the rotating mechanism comprises a supporting plate slidably connected with the bottom plate, a rotating shaft is rotatably connected to the supporting plate, a clamping piece is arranged at the end, away from the li