Inclined strut structure of stair frame

The utility model relates to the technical field of building construction, in particular to a diagonal bracing structure of a stair frame, which comprises a base, a plurality of hydraulic cylinders are fixedly connected to the top of the base, a mounting plate is fixedly connected to the output ends of the hydraulic cylinders, a mounting frame is fixedly connected to the top of the mounting plate, and the mounting frame is fixedly connected to the bottom of the base. A supporting plate is rotationally matched with the top of the mounting frame, a plurality of mounting grooves are formed in the top of the supporting plate, dampers are mounted at the bottoms of the inner walls of the mounting grooves, compression-resistant springs sleeve the dampers, and a top plate is fixedly connected to the output ends of the dampers. By arranging the driving mechanism, when the stair frame needs to be supported in an auxiliary mode, the rotary knob is rotated to drive the adjusting lead screw to rotate and drive the driving