Roadway rock burst energy absorption type protection device

The invention relates to a roadway rock burst energy absorption type protection device, and belongs to the technical field of rock burst protection devices. The protection device comprises a U-shapedbracket, and energy absorption devices and a protection device body are arranged in an inner cavity of the bracket; the protection device body comprises two protection walls which are arranged in parallel, a top plate and a supporting hydraulic cylinder, wherein the cross section of the top plate is semi-arc-shaped, a sliding block is fixedly connected to the two ends of the top plate, the slidingblock is slidably connected with the inner walls of the two protection walls, and guide columns are fixedly connected to the lower end faces of the sliding block at equal intervals; and the energy absorption devices comprise compression springs and supporting sleeves, wherein the compression springs are arranged on the guide columns in a sleeving mode, the two ends of the compression springs arefixedly connected with the