Fixed rack structure suitable for bending machines of different specifications

The utility model discloses a fixed rack structure suitable for bending machines of different specifications. The bending device comprises a hydraulic machine, a top plate, a bottom plate, supportingcolumns, a fixing mechanism and a bending die, the four corners of the top plate and the four corners of the bottom plate are connected through the supporting columns, the hydraulic machine is installed at the lower end of the top plate, the bending die is arranged under the hydraulic machine, and the fixing mechanism is installed on the bottom plate and connected with the bending die; the fixingmechanism comprises a front side covered edge, a rear side covered edge, a covered edge fixing assembly and a covered edge lifting assembly, one end of the covered edge fixing assembly is connected with the front side covered edge, and the other end of the covered edge fixing assembly is connected with the rear side covered edge. The edge covering fixing assembly and the edge covering lifting assembly are used for limiting