Design And Implementation Of Electrical Control System And Upper-car Layout Optimization Of Cranes

In recent years, China has made some achievements in crane design and manufacture of large ports, civil construction, water conservancy and hydropower industry, But the crane technical performance and the development of the industry largely depends on the crane electrical control system and the overall layout of the program design innovation and improve. Take a combination of mechanical and electronic technology, the advanced control technology, power electronics technology, computer technology applied to intelligent control systems and intelligent optimization design of mechanical and electrical products, Crane automation and intelligent, one of the future development direction of the crane industry.PLC-inverter speed gradually in recent years has been the promotion and popularization of the lifting equipment industry, PLC control to replace traditional relay-contactor control; frequency conversion velocity modulation replace the wound rotor series resistance governor; Replace wound motor with variable frequency motor or asynchronous motor; Coupled with advanced fieldbus technology and man-machine interface visualization, Improve control accuracy and stability of the equipment. And energy-saving, easy to repair and maintenance, Become a good way to improve production efficiency. In addition, in the overall design of the lifting equipment, The advanced intelligent algorithm-based optimization design in recent years has been gradually replaced by the original rely on experience, spreadsheets and traditional design method, Improve the overall performance of the equipment and can adapt to the rapid changes in the market demand.This thesis, the large cranes used in ports and other engineering background, intelligent electronic control system and layout design research work. In the intelligent electronic control, D50100K12Crane, for example, Point elaborate design of electrical control systems, Start from the principle of design, to the realization of each function, and the selection of components, Combined with the actual needs of the crane, And taking into account the relevant standards of the crane provides, Also consider the actual work in the economy, practicality and reliability. Thus completing the electrical control system D50100K12type gantry crane. The cranes have been used in the Dalian Shipbuilding Industry Group, running in good condition. This design experience has shown that based inverter with Siemens S7-300programmable logic controller compatible use, its low cost, reliability and performance of higher price. Fieldbus can make closer links between the PLC and inverter, mutually convenient to exchange large amounts of data. Thus achieve the crane intelligent control purposes. In the intelligent layout design, QUY150crawler cranes, for example, the paper established a mathematical model on car component layout optimization, in swarm intelligence optimization strategy, to introduce the idea of adaptive and multiple population evolution of parallel genetic algorithm, an adaptive multiple-population parallel genetic algorithm AMPGA, Classic function optimization studies to verify its feasibility and effectiveness. Classic function optimization studies to verify its feasibility and effectiveness.