Anti-impact permanent supporting frame

The utility model relates to the technical field of mining supporting frames, in particular to an anti-impact permanent supporting frame. The device comprises a supporting frame and a top plate, the top plate comprises a supporting plate and a buffering plate, the supporting frame is fixedly connected with a bearing hydraulic cylinder, the bearing hydraulic cylinder is fixedly connected with the buffering plate, the supporting frame is provided with an impact bearing device, and the impact bearing device comprises a sliding plate connected to the supporting frame and an impact hydraulic cylinder slidably connected to the sliding plate; the sliding rack is installed on the impact hydraulic cylinder, the bearing gear is rotationally connected to the sliding plate, the driving rack is fixedly connected to the supporting plate, and the bearing gear is meshed with the sliding rack and the driving rack. The problems that a hydraulic cylinder needs to be maintained and detected when a supporting frame in a mine hole