Trolley assembly for container crane

PURPOSE: A trolley assembly for a container crane is provided to easily control and stabilize the posture of a spreader by accurately measuring the movement of a crane spreader. CONSTITUTION: A trolley assembly for a container crane comprises a main trolley(210) which moves along a main boom, a hoist(250) which moves along two or more axes on the trolley, a spreader(260) which is lifted by the hoist and grips a container, a light source(270) which is provided in the spreader, a smart camera(280) which processes the images of the spreader and the light source and measures the movement of the spreader, and a position control unit(290) which controls the movement of the hoist based on the information about the movement of the spreader.