Research And Implementation Of Platforms For The Design And Computing Of Wheeled Crane

The crane is widely used and huge demanded in the industries such as power plants,nuclear power, docks, water, tunnels, bridges, petrochemical, metallurgy, construction andetc.The domestic crane market has been accelerating the momentum to the development oflarge-scale under large demand of these large-scale projects on the crane.The development of computer technology has brought convenience to many areas andthe crane design is one of them.The crane design process is the bottom-up, which starts fromthe design of each part, then obtains the entire product after integration of the parts, and endsin the simulation and evaluation of the performance of the whole. The traditional designapproach is the process of experience and repeated iterations, which works out the overallprogram by thinking, express it through the manual way, and gets the method of design ofeach part.It’s not difficult to see that the traditional design approach can hardly meet therequirement of the full design of product, especially the serialization.To meet the market demand for product and its personalized features, it has attractedmore and more attention to make the mechanical product design as software or platform andto be more automated, as one of the important means of technical upgrading in the machineryindustry. The product structure, mechanical properties, dynamic performance and designexperience can be easily set into the design process by making full use of the computertechnology and its commercialized software to make innovation in product design andtransform the thinking design results into the form of expression for the computer.The main work in this paper is to develop the design and computing platforms for thewheeled crane by cooperation with the Xuzhou Heavy Machinery Co., Ltd. The platform hasmany advantages over the traditional design patterns in especially three points. Firstly, theinformation can be integrated after the design of each part on the assembly line. Secondly, thecrane design can be not limited to the location of the factory but the client due to thenetworking of the platform. Finally, the system has a unified database management, includedthe important parameters of the previous models in which to provide an important reference inthe design process. Firstly, the topic basis for this article is offered after the analysis of the importance of thecrane industry, and the reference to the data of the crane industry at home and abroad. On thisbasis, the traditional crane design is discussed. By compared with the pros and cons of thefinite element method and the analytical method, the difficulties of the traditional cranedesign are identified, as well as how to improve these difficulties through computertechnology. And then, the technologies of the design and computing platforms for the wheeledcrane are briefly introduced, especially the database technology. The prevalent databases,including MySQL, DB2and Oracle, are compared and analyzed. Finally, oracle is chose to bethe database of the platform after the comparison of the detailed performance and thehardware requirements between the three.Secondly, the theoretical basis of the calculation algorithm of the platform is elaborated.Due to the confidential requirement of the design and computing platforms for the wheeledcrane, only parts of the algorithm are involved, including the optimal design of thethree-hinge-point of the luffing mechanism, the analysis of the telescopic crane mechanicalmodel and the calculation of lifting performance of the whole machine.Then, the detailed design of the design and computing platform for the wheeled crane,including the design principles and the module division of the system are introducedaccording to the perfect theoretical text. The system splits the business process of the designof the crane into four parts, including general, parts, transmission and control. Each part cancomplete the design independently, but the original design parameters of them are providedby the chief architect, that is, by reading from the database under limited permission. Theresult data of each part are integrated into the chief architect to review the calculation resultsfrom the overall performance, in order to complete the crane design process.Finally, the implementation of design of the platform including two aspects: the clientand server, is mostly introduced. On the client side, the logic of client interface, how to usethe MFC library and how to rewrite the control in the library according to their own needs aremostly introduced. On the server side, according to the data characteristics of the process ofdesign of the crane, the design of the database form and the relationship between the formsare mostly introduced.