The Stress Analysis Of Bearing In Main Drive Reducer Of Rolling Mill

Spherical roller bearing is one of the important component used more commonly in metallurgical equipment, It's a important Supporting component to bear load, bearing'working condition of Metallurgical industry is very terrible,Mill often bear enormous impact load Particularly, Therefore, the stress analysis of bearing, calculate the maximum stress value and its position, to prevent overload, ensure the normal work and life of the mill bearing is significant for entire metallurgical production.The main drive reducer of mill's high-speed input shaft bearing of a metallurgical plant overall rupture. After observing the scene,Rollers, inner ring, outer ring and cage all Serious breakdown and failure. Drum roller which break in half along the axis, accompanied with severe burning of the phenomenon of friction heat, cause the entire production line shutdown, loss greatly. In order to analyze the reasons for its breakdown, calculate force of the bearing who bearing the greatest force of reducer first,4regards the Self-aligning roller Bearing as the research object, establish bearing's finite element model. It can simulate the real force state of the bearing by establishing Three-dimensional solid surface-surface contact pair to transfer force and displacement between roller the internal and external ring raceway. Analysis and calculate contact stress of the bearing's components by finite element method, obtain the deformation and stress distribution of bearing's all components, because the overall size of bearing is large, In order to be more close to the true solution, Sub model used in solving the maximum stress location for further refinement.Through analysis of the results, bearing's maximum stress region is located at the roller and contact with the face of outer ring, roller stress concentrated in the radial direction through the axis, it consistent with the scene observed roller rupture. This article calculate the stress under the premise of the overload coefficient of 2.5, however, due to rolling mills and other metallurgical equipment, working environment in which relatively poor, In the frequent impact loads, roller bearing's actual stress may be greater than the value calculate by theoretical overload coefficient. Should take appropriate measures to reduce the impact load, to extend bearing life, avoid failure.