Drop impact testing machine for large dangerous cargo transporting package containers

The invention relates to a drop impact testing machine for large dangerous cargo transporting package containers. The upper ends of two support upright posts are connected with a fixed cross beam to form an n-shaped frame, and the lower ends are respectively fixed with one fixing plate. Two screw rods are respectively arranged at the inner sides of the two support upright posts, and are parallel with the two support upright posts and fixed between the fixed cross beam and the fixing plate to freely rotate. The inside surfaces of the two support upright posts are respectively fixed with a guide rail, and two slide blocks are respectively fixed at both ends of a movable cross beam and arranged on the two guide rails. The two screw rods penetrate through the through holes at both ends of the movable cross beam. Two servo motors are respectively fixed on two speed reduction boxes, and the two speed reduction boxes are respectively fixed at the lower ends of the two sides of the movable cross beam, and sleeved on the two screw rods by threads. A release device is fixed at the center of the lower end surface of the movable cross beam. A testing and controlling device is arranged in a groove of the movable cross beam. The testing machine realizes automation of the hanging/dropping complete process of the packaging piece with the weight of 20 kilograms to 2 tons, has the advantages of convenient operation, good lifting stability, low mechanical noise and high accuracy, eliminates the safety hazard caused by manual operation, and can be widely applied to testing various large-weight cargo packages.