Research On Boom Structure And Superlift System Of All Terrain Truck Crane

As an important part of engineering machinery, crane plays a significant role in buildingoperations, industrial manufacture, and electric power construction. In contemporary society, allterrain truck crane plays a vital part in nationnal economy, with its unique advantages.Therefore,various countries keep on launching new products in succession toward to large-tonnage or supertonnage. Despite its late start in product development and designing, China is catching up withand surpassing the foreign countries, such as ZOOMLION, XCMG Group, and Sany.In order to creat a typical product, and provide the standard for the development of allterrain truck crane, an enterprise began to develop the QAY350. The design of new products cannot be separated from the structure analysis, which ensures the validity of the design. Therefore,the structure analysis is especially important for new product.The correctness of the calculation is influenced by many factors. Firstly, algorithm plays adirectional part in the analysis. At present we have to ways for the analysis—analytic methodand finite element method. The latter reflects results intuitively, and is widely used in variousindustries. Secondly, simulating accurately is the protection of analyzing accurately. Thesimulation of superlift is the difficulty as well as key point of simulation of the crane. This articlewill focus on the simulation of wirerope, based on abundant of experiments. Furthermore,computing coefficients, boundary conditions and methods of data handling affect the accuracy ofthe analysis.Based on the research of boom structure of QAY350all terrain truck crane, this papershowed the study of the issues mentioned above. The first two chapters of the paper introducedthe development of the all terrain truck crane, as well as its structure briefly, and relevantconcepts and methods involved in the process of the current calculation are expounded. The thirdchapter showed the reasults of the on the finite element analysis of the crane without the superliftstructure, which found the computing problems about allowable stiffness and stability againsttipping. The fourth chapter and the fifth chapter of this article discussed the simulation of thesuperlift structure emphatically. Studies have shown that several factors influenced initialdeformation of the wirerope—effect of suspension cable, deformation of the superlift, derrickingcylinder of the superlift, and the maximum luffing angle. It was verified by a series of tests thatthese factors influenced initial deformation to a variable extent, which was of great significancefor the correctness of the simulation and the calculation of the structure. By the end of the paper, the sixth chapter drew conclusions and outlook about the analysis,and made a summary on the current research, the existing problems, the research that had notinvolved in the paper, which was the main content of the next research on simulation andcalculation of the wirerope.