Assembled steel door frame structure

The utility model relates to the technical field of steel door frames, in particular to an assembly type steel door frame structure, which comprises a door frame body, a steel door frame, a steel door frame and a steel door frame, the two ends of the supporting frame are connected with assembling structures which comprise positioning blocks, and rubber pads are arranged at the bottom ends of the positioning blocks. The first bolt is rotated to move towards the outside of the supporting pile, the first bolt drives the limiting plate connected with one end of the first bearing to extrude the supporting spring to be contracted into the groove body formed in the supporting pile, and then the positioning block is inserted into the positioning groove formed in the supporting pile; and the first bolts are reversely rotated to enable the supporting limiting plates to be inserted into the limiting grooves formed in the positioning blocks, so that the limiting effect on the positioning blocks is achieved, the supportin