Finite Element Analysis And Structure Optimization Of The Beam Of PXZ1417 Cycle Crusher

The crusher is necessary in large mine ore crushing equipment,one of the most widely used crusher.Through a large number of field research,we found that the gyratory crusher main failure forms of beam fracture,and crusher beam is very heavy,disassembly,maintenance,installation is very convenient,maintenance costs are also higher,so the beam structure optimization to reduce fracture frequency is significant.The cycles of Anshan City in Liaoning Province Dagushan Iron Mine Factory PXZ1417 type crusher as the research object,on the basis of previous research further research,in order to improve the reliability of beam structure as the goal,through the use of ANSYS finite element transient dynamic analysis of the beam,the beam that should stress and strain nephogram.Based on response surface method,the sensitivity analysis of beam parameters is carried out to find out the relationship between the parameters and the stress at the fracture of the beam,and finally optimize the structure of the beam.1,In the work site,according to the actual working condition of the cycle crusher,determine the most reasonable beam finite element boundary load conditions.First the solidworks2013 three-dimensional solid modeling software,build the crushing and the three-dimensional finite element model of the beam engine,transient dynamic analysis of tree analysis and the application of the workbench of transient structural(transient analysis)options to PXZ1417 beam,and then come to the conclusion that the strain of beams at different time points,force distribution diagram,analysis of the beam in the complex dynamic load of cracking at the maximum stress for 161.23MPa than required of the beam stress 158.82MPa,so need to improve the beam.2,According to the influence of the beam intensity of the design variables(size parameters)more,if for each variable structure optimization steps cumbersome,complex.This article will use based on response surface method for reliability sensitivity analysis of the main parameters of the beam to determine the beam crack of large parameter variables,through analysis of influence parameters with larger variable cross beam width widel,transverse beam thickness thick1,beam at the heart of the height of cylinder highl and beam height distance respectively.The sensitivity of the four parameters were-0.89,-0.76,0.69,0.61.Aiming at the four design variables,the structure optimization design provides an accurate,simple and time saving way for the optimization design of the beam,which improves the accuracy and efficiency of the optimization calculation.3,To of transverse beam stress influence larger variables as optimization design variables,to break unit should force minimum as the optimization objective,through the workbench in the structure optimization design module to improve the structure of beam of PXZ1417.By optimizing the design and size changes of beam parameters are as follows:beam width increase 39mm and a cross beam thickness increased 34mm,beam at the center of the cylinder to reduce the height of 41mm,frame beam of highly reduced 39mm.Thus,the stress at the fracture of the beam is reduced by 44.36MPa,and the maximum displacement is reduced by 0.1273mm.Beam cracking at the maximum stress significantly reduced,reduced about 27.6%,effectively improve the structural strength of the beam,and check of fatigue life,through the life cloud displays the beam results the lowest number of cycles to enhance the 165530 and increase the life of the beam.