Abstract: A structural steel member connecting assembly includes a first connecting member and a second connecting member. The first connecting member is pivotally connected to a positioning portion of a first structural steel member and therefore can be swung. The second connecting member is pivotally connected to the first connecting member such that the two connecting members are rotatable with respect to each other. The second connecting member has a fixing portion coupled with a second structural steel member such that the longitudinal directions of the two structural steel members intersect. With the second connecting member rotatable with respect to the first connecting member, the installation angles of the two structural steel members can be easily changed in order to make a stable engineering structure. The structural steel member connecting assembly features convenience of, and flexibility in, use and has extensive applications.

Abstract: A positioning foot block for the mounting of an upright bar is disclosed to include a support device having a bottom wall, two side walls respectively extended from opposing left and right sides of the bottom wall and a positioning space surrounded by the bottom wall and the side walls for receiving the upright bar. Each side wall of the support device has two side lugs respectively extended from opposing front and rear sides thereof toward the positioning space and respectively clamped on respective corner ends of the upright bar. Thus, the structural design of the positioning foot block can clamp the corner ends of the upright bar firmly, prohibiting the upright bar from vibration and enhancing its positioning stability.

Abstract: A joint device includes a main fixing plate, an auxiliary fixing plate, and a fastener. The main fixing plate has a vertical wall disposed between a longitudinal beam and a transverse beam, a first extending wall extending towards a side of the longitudinal beam from the vertical wall and crossing over and abutting against an upper portion of the longitudinal beam, and a second extending wall extending towards a side of the transverse beam from the vertical wall and crossing over and abutting against a lower portion of the transverse beam. The auxiliary fixing plate is disposed in an open groove of the transverse beam in a way that the transverse beam is clamped between the auxiliary fixing plate and the vertical wall of the main fixing plate. The fastener secures the longitudinal beam, the transverse beam, the main fixing plate and the auxiliary fixing plate together.