Fabricated steel structure cross beam

The utility model discloses an assembly type steel structure cross beam, which relates to the technical field of steel structures, and comprises a cross beam main body, the cross beam main body is fixed with the side wall of a stand column through bolts and welding, and the cross beam main body is also provided with an auxiliary component which is convenient for pre-fixing during installation; and the auxiliary components comprise inserting pieces, limiting plates and springs, the limiting plates are fixed to the two ends of the cross beam body through welding, inserting grooves are formed between the limiting plates and the cross beam body, the inserting pieces are inserted into the inserting grooves in a sliding mode, and the springs are further arranged between the inserting pieces and the inner walls of the inserting grooves. According to the utility model, through the arrangement of the plug connector and the limiting plate and the plug hole which are matched for use, the pre-fixation of the cross beam m