Z-shape center pin and draw-bar locomotive draw gear

The utility model discloses a locomotive draught apparatus added with a Z-shaped draw-rod on a center pin, which is characterized in that a draught pin is provided on the locomotive bottom, a draught pin seat is sleeved on the draught pin, draught draw-rods are respectively arranged at both sides of the draught pin seat, two draught draw-rods and the draught pin seat are arranged as a Z-shape, the draught draw-rod and the draught pin seat are hinged by an elastic joint, the other end of the draught draw-rod is connected with a draught draw-rod seat on the bogie cross beam, an elastic element is also arranged between the draught pin and the draught pin seat. The utility model can realize unconstrained rotation between the locomotive body and the bogie when the locomotive passes the curve, and the inner elastic element can buffer the impact and oscillation from various directions.