Finite Element Analysis Of Gear For Converter’s Primary And Secondary Reducer Under The Asynchronous State Of The Brakes

Converter is the main body of steelmaking production equipment, the tilting device isdriven rotation so as to complete the steelmaking operation of converter power element. Inthe process of daily maintenance, using EZ-ANALYST software of a converter tiltingdevice of four a deceleration machine vibration signal acquisition, find out a a decelerationmachine delay action, leading to the primary and secondary production of abnormal reducergear meshing, the domestic steel mills converter tilting device for the primary and secondaryreducer gear tooth fatigue fracture phenomenon also happen. For the study of this kind ofasynchronous driving condition the influence of the strength and fatigue life of gear, to betterensure the safety in production, based on stress wave theory and fatigue damage theory asthe strong support of the thesis, using the Solidworks which is3d modeling software foroverall accurate modeling of converter and rev, brake specific Angle is calculated under thetilting moment, with the primary and secondary reducer gear and gear shaft as the researchobject, to calculate the specific strength of gear static contact angles, then combined with theactual working condition of various parameters on the primary and secondary reducer gearquasi static analysis, respectively, including: startup "three drive one brake" explicit dynamicanalysis, in the cases of braking phase "three brake one driven" explicit dynamics analysisand brake moment "one brake three drive" gear in the cases of transient dynamics analysis.At this point, it is concluded that under different working conditions, static, start and brakecorresponding static and dynamic strength of gear tooth, so that I can confirm the worstworkingconditionanditsinfluenceto forecastthefatigue lifeof thetransmission gears.This paper innovative use ANSYS/LS-DYNA to the primary and secondary reduceropening and braking mode of the explicit dynamic analysis, is well received this impactoperating mode of the load spectrum, the fatigue life analysis of ANSYS/FE-SAFE afterprecision also did well. Research results show that the start time "three drive one braking" forthe worst conditions, and then the tooth in the cases of fatigue life analysis, the resultsshowed that the root fillet radius of fatigue strength is insufficient, which root fillet radiususing GearTrax software method for structural optimization and check again. The resultsshowed that when increasing the root fillet radius1.4mm significantly improved the fatigue strength of gear tooth. Domestic scholars just from the driver response time of electricalequipment, not seen by using finite element method (fem) of converter tilting device of syncproblem study, this paper for the converter tilting device design, maintenance, improvementof production technology has higher practical guiding significance.