Large wind turbine generator blade damage detection device

The utility model relates to the technical field of wind turbine generator blade detection, and discloses a large wind turbine generator blade damage detection device which comprises a blade, the upper side and the lower side of the blade are respectively provided with a movable frame, the top end of the upper movable frame is fixedly connected with a box body, and the interiors of the two movable frames are respectively and fixedly connected with a detection probe. And a controller is fixedly connected to the interior of the box body, electric wires are electrically connected to the side walls of the two detection probes correspondingly, and the electric wires are electrically connected with the controller. The two movable frames are arranged on the outer side of the blade in a sleeving mode at the same time and slide, the detection probe can conduct comprehensive detection processing on the blade, meanwhile, signals can be transmitted to the controller through the electric wire and the signal transmitter, t