Concrete mixing plant

The utility model provides a concrete mixing plant. The concrete mixing plant comprises an aggregate intermediate bin, a transition hopper, a flexible connecting piece, a mounting bracket and a pressing and fixing piece, wherein the aggregate intermediate bin comprises a discharging end; the transition hopper comprises a material receiving end; the flexible connecting piece is connected between the discharging end and the receiving end in a sleeved mode. The mounting bracket radially protrudes from the peripheral wall of the discharging end and/or the receiving end; and the pressing and fixing piece extends inwards from the mounting bracket in the radial direction and is used for pressing the flexible connecting piece on the peripheral wall. According to the flexible connecting piece, the mode that the transition hopper, the flexible connecting piece and the aggregate middle bin are punched to install bolts is replaced with the mode that the pressing and fixing piece is used for pressing, the part machining d