Crawler Crane Structural Analysis And The Optimization For The Turntable

Crawler Crane Structural Analysis and the Optimization for the TurntableThe rapid development of modern economic society promotes the series of engineering construction, especially our country in petrochemical, wind and nuclear power construction provides sufficient conditions for development for crawler crane development Crawler crane is the necessary engineering machinery in the modernization Due to the working condition like diversity working environment the special driving with load, climbing and so on, the design of crawler crane was put forward to higher requirement Because the design level of the Crawler crane directly affects crane performance and the safety of work, the design of the product must use mechanics analysis to check According to the results of the analysis we can improve the mechanical design and put forward reasonable request The analysis provides the reliable calculation basis So, analysis become more and more importance in the process of design mechanical. Plenty of calculating data and results are necessary to design the crane efficiently and safety This paper is based on the calculation of crawler crane, and makes a detailed analysis and calculation for Crane Superstructure and Crane Carrier. Through the calculation result we make the design change Through ANSYS optimization function, we eventually get the optimal design of turntable structure In this way, it satisfy the structure stiffness and stress requirement, and reduce materials and weight, realizing efficient, safe crawler crane design.According to the structure of crawler crane, we divided it into Crane Superstructure, mainly boom, and Crane Carrier including crawler beams, turntable, frame four-wheel and track block, In this paper, according to the crawler crane we make different part of the mechanical analysis separately, specific working content and research results are as follows:1) The analytic method and finite element calculation for boom. First, by using analytical method,we test the boom dangerous conditions, according to company design data provided by the researchers In the main arms hanging heavy condition, the boom axial force is the largest We take this condition as the most dangerous condition. In this condition, we Calculation the stress of the boom. According to the calculated results of we preliminary set boom size. And feedback to the technical personnel Second, according to the coMPany offers 3d model of the boom, using the grid partition tools, we set up the finite element model of the boom and assembly for static calculations in ANSYS. The analytical method for calculating results were compared, to determine the accuracy of the calculation results provide the computation basis for designing.2) The finite element calculation for Crane Carrier. We take the turntable for static calculations. We choose the dangerous condition analysis and calculation, we find that the turntable has great optimizing space and make preliminary optimized scheme to the turntable optimization objects. We make the crawler beams and frame assembled calculation organized by ANSYS contact to simulate the actual stress state. Using ANSYS contact element to simulate the actual connection mode, and get the calculation results of a detailed analysis, and to ensure the design evidence to be found, mastered the stress state of Crane Carrier.3) Optimization calculation for the turntable. Based on the analysis static calculations results of turntable, after talk things over with the technical personnel, turntable general appearance profile board thickness is optimized. We take this board thickness as design variables. Based on ANSYS optimization module, we optimize the turntable. Ensure sufficient stiffness and strength premise, we reduce turntable weight and saving product production cost. The optimization idea change the calculation results and the optimal design become the ultimate goal for design.