Coupled hauling trolley

The utility model relates to the technical field of haulage trolleys, and discloses a connectable haulage trolley which comprises two haulage carriages of the same structure, universal wheels are fixedly installed at the four corners of the bottoms of the haulage carriages, supporting blocks are fixedly connected to the opposite outer side walls of the two haulage carriages, and rotating rods are arranged on the supporting blocks in a penetrating mode. The rotating rod is fixedly connected with the supporting block through a first bearing, a hinge seat is fixedly connected to the top end of the rotating rod, matched linkage rods are rotatably connected to the hinge seat, butt joint plates are fixedly connected to the opposite ends of the two linkage rods, the two butt joint plates are attached to each other, and the two butt joint plates are connected through a butt joint mechanism. According to the utility model, the hauling trolleys can be conveniently and quickly connected, so that the connected trolleys c