The Finite Element Analysis And Optimization Design Of PGS355Q3 Type Frame

Drive device is an important equipment in the belt conveyor, has been widely used in industrial fields, the frame is inseparable in the drive device.The frame will be affected by vibration force from motor, hydraulic coupler device and other equipments on the job, frame starts to do the forced vibration, especially vibration of the drive device is more obvious when drive device starts to work, sometimes even more than the safety range, it brings great hidden trouble to the driving devices.For increasing the strength and stiffness of the driving devices and reducing the amplitude of frame, it needs to carry out static analysis and dynamic analysis to find insufficient rigidity on the frame, in order to structure optimization, optimization make the amplitude to the safe range.Parametric design language is employed to construct a finite element modal of frame,to ensure the calculation accuracy in frame at the same time,the frame is simplified,also use the constraint equations is use to deal with the connection processing problems of plate to plate.Statics analysis was carried out on the rack, it is concluded that the biggest displacement of the frame in the static does not exceed the scope of the project requirements. The analysis of modal was carried out on the rack.That the vibration of the frame is too big is not caused by the resonance, but the hydraulic coupler device and the frame joint lack of adequate stiffness.The maximum displacement of frame beyond the scope of the practical work requirements,and get the changing curve of the stress of the von Mises and the maximum displacement.According to the frame structure, find out the appropriate some design variables,avoiding the blindness of optimization design. This paper puts the constraint frequency, the maximal displacement and the maximal stress as constraints, weight act as a objective function, the model of optimization is established, and be writed the corresponding the optimization program of the frame, sorting the data of optimization, it has provided a transient dynamic analysis for the frame to verify the correctness of the optimized frame.The maximal displacement of the optimized frame reduced 40% than the original model, the total weight of rack reduced 2%.