Simulation Analysis Of The Working Equipment Of Large Electric Shovel

The construction of excavator is very complex and the multiple working equipments often work simultaneously. At the same time its working environment is very bad and the carrying load varies randomly. In order to be able to work safely and smoothly, apart from the necessary theoretical and static strength analysis, dynamic analysis and finite element analysis are available in the process of design of heavy mining excavators.To meet mining excavator requirements of its development, and make full results of its predecessors and the experimental dates, the paper analyzed the mining excavator working equipments which capacity is 35m3 on the basis of P&H-2800. With its operational characteristics, the model is established by software Pro/E, and then turned its model into the software ADAMS. Make the dynamics and kinematics simulation in ADAMS. At the operational process the boom and the bar of the excavator working equipment carried load more than other parts of the excavator, therefore it is easily lead to be fracture, so to analyze their operating force and finite element analysis are very useful.The first chapter is devoted to the development of domestic and foreign excavators, as well as the study of the subject contents and significance. Although the heavy mining excavator manufacturers in recent years have developed significantly, the quality of their products in comparison with the developed countries is still quite backward. To meet our country developing requirements, this paper makes dynamics simulation and finite element analysis of mining excavator equipment which capacity is 35m3.Chapter II introduces the structure of the mechanical shovels, and analyzes the structure of its working equipment. According to the empirical formula to determine of the equipment structure size, and the various components size. Meanwhile the Chapter II also introduces lifting equipment and pushing pressure equipment.Chapter III introduces virtual prototyping technology, and then turns themodel into ADAMS by the device MECHANISM/Pro, and makes the dynamic simulation in ADAMS. The figure of the excavation working equipment is calculated by the simulation of the model, and checks the equipment size. In order to finite element analysis of the working equipment, calculation of the force of the arm and bar are done by ADAMS, and analysis of the stress curves is dealä»–with. Parametric and optimization analysis for the connecting location between boom and bar are simulated by using parametric and optimization function of ADAMS.Chapter IV introduces software FEM in the static analysis and dynamic analysis. Considering of the working equipment of excavator in different conditions during its working, the operating force is analyzed by static analysis module to get the stress changing state and its maximize location of unit. Meanwhile mode analysis of the working equipment and its mode vibration from the first to the fourth stage are researched.Chapter V is the conclusions of the full paper and the future work prospects. The future task in the field are mainly to establish the effective virtual prototyping evaluation mechanism, and combining the simulation dates of physical prototype, analyze reasons resulting the errors, and research a fault-tolerant Virtual Prototyping System to ensure that the test dates are credible, and any potential errors can be quantified.