The Optimum Design Of Four-link Structure Component Of Portal Crane

Portal crane, which is an important and representative rotation type of rail operating cranes, is widely used in the mechanized loading and unloading in the port. It is an indispensable equipment to achieve mechanization of production.Four-link Structure is the key Structure of Portal Crane, and is used to lift up object and change ranges. In order to keep the object move in the horizontal line, the parameter of the arm system should be design right. Based on the cooperative project between the Institute of Process Equipment and Control Engineering in Zhejiang University and Shanghai Port Co.Ltd, "Portal Crane Analysis System of Four-link Structure", this dissertation explores the efficiency of loading and the optimism of Four-link parameter. The main content of the dissertation is present as follows:a) Find out the optimum variables related to the structure and establish the geometrical relationship between them and the restraint. The optimum equations are derived based on this.b)Put Algorithm into program using computer language, and is widely used in the factory.c) Based on basic principle of optimum theory, Coordinate exchange is applied after comparison of the optimum effect.