Pin dismounting device for overhauling steam turbine of thermal power plant

The utility model relates to the technical field of steam turbine overhaul, and discloses a pin dismounting device for steam turbine overhaul of a thermal power plant, which comprises a base device, a pulling device is arranged on one side of the outer surface of the base device, the base device comprises a base ring, a device box is arranged on one side of the outer surface of the base ring, and a pressing rod is arranged on one side of the outer surface of the device box. A device pipe is arranged in the device box, an auxiliary rod is arranged at one end of the device pipe, a clamping plate is arranged at one end of the auxiliary rod, a supporting rod is arranged on one side of the outer surface of the auxiliary rod, and a limiting plate is arranged at one end of the supporting rod. One end of the pressing rod is connected with one end of the supporting rod in an inserted mode and fixedly connected with the movable rod, so that when the pressing rod moves, the movable rod moves, the movable rod is fixedly