Heavy-load AGV steering wheel lifting device

The utility model discloses a heavy-load AGV steering wheel lifting device which mainly comprises a trapezoidal lead screw pair, a connecting rod, a pin shaft, a roller, a lead screw bearing seat, a bearing mounting seat, a nut mounting seat, a roller guide rail, a connecting rod rear support, a bottom plate and an upper supporting plate. The bottom plate is mounted on an AGV frame body; the bottom connecting rod is mounted at the trunnion seat of the bottom plate through a pin shaft; the bearing mounting seat, the roller guide rail and the connecting rod rear support are fixedly connected to form a rectangular frame; the upper rear side connecting rod is connected with a connecting rod rear support through a pin shaft; the two connecting rods on the front side of the upper part are connected through nut mounting seats; the two rollers are fixed on two sides of the nut mounting seat and are matched with the roller guide rails; the lead screw bearing seat is mounted on the bearing mounting seat; the trapezoida