Transmission shaft protection device

The utility model relates to the technical field of transmission shaft protection, and discloses a transmission shaft protection device which comprises a bottom plate, supporting seats are fixedly connected to the left side and the right side of the top end of the bottom plate, a rotating rod is rotationally connected to the bottom side of the left end of the supporting seat on the left side, and a first handle is fixedly connected to the left end of the rotating rod. The rotating rod is connected with a threaded rod through a gear assembly, the outer wall of the threaded rod is in threaded connection with a supporting frame, a sliding rod is fixedly connected to the inner wall of the bottom end of the supporting seat on the right side, a supporting plate is fixedly connected to the top end of the supporting frame, and a dismounting assembly is arranged on the inner wall of the top end of the supporting plate. According to the protective cover, the second handle is pulled outwards, so that the connecting rod