The utility model relates to a steadily connected steel structure
fastener, which comprises a steel beam, a connecting piece and a
fastener, through the cooperation of a bolt mounting column and an elastic structure, a person presses a pressing
handle to make the lower end of the elastic structure penetrate into a clamping opening, and then the person loosens the pressing of the pressing
handle to make a ball move upwards, so that the steel beam is firmly connected. The fastening piece is arranged on the connecting piece and is gradually embedded and pressed to the cambered surface of the inner wall of the clamping opening, so that the lower end of the elastic structure and the clamping opening form a clamping effect, the fastening piece is stably positioned on the connecting piece, the fastening acting force generated by the auxiliary connecting piece on the steel beams is better, the steel beams can be stably connected, and disassembly and
assembly are easy.