Dynamic Simulation Of Dragline Rotary Device And Strength Analysis Of Its Key Components

Dragline is open pit mining equipment belongs to the class of single bucketexcavators, heavy equipment suitable for mining operations on large and oversize mine.The slewing mechanism is an important part of the dragline,In the whole process ofdragline rotary, rotary motion time accounts for the dragline working cycle time60%.Performance of rotary device directly affects the overall performance of dragline and openpit mine. Therefore, the dynamic simulation analysis is of great significance to shovelturning device.In this paper, we first introduce the dragline and rotary device structure, workprinciple, of the motion characteristics and the process of rotation by the force condition isanalyzed. Using SolidWorks software established normal condition and fault condition ofthe geometric model and the were imported into the ADAMS software, in the Adamsenvironment of dragline of a series of setting and loading, creating the virtual prototypemodel of dragline rotary device.In the dynamics software of dragline rotary device were gear contact analysis, get theprocess of circulation slewing gear meshing force and gear ring. On two cases under thesimulation curves of the comparative analysis, that in fault condition than under the normalcondition, gear meshing force curve fluctuations larger, the gear meshing larger force, gearring force is relatively increased, also rotary platform will not smooth under normalcircumstances. After the application of the software of finite element analysis to the rotaryshaft and the rotating pinion, the check of the static strength analysis, the stress anddeformation of, meet the strength requirements and structure design of such components.And in the finite element software of vertical shaft rotary modal analysis, obtained in thegear meshing vibration force will not cause resonance of a rotary vertical shaft, and obtaina swing shaft vibration from the vibration shape diagram, close to the lower part of thesmall gear vibration greatly, we should pay attention to what may influence the stability of pinion meshing.Our country has not designed and produce such large equipment, related research ofdragline is rarely,China is rich in mineral resources, demand, so the market for this kind ofhigh efficiency mining equipment has a great demand, China’s future will also design andmanufacture of such equipment. The above conclusions, providing the reference for theshovel in practical use and maintenance, enriching the research data of such products,provides some help for our country design and production of such equipment in the future.