Abstract:For the carrying performance of a large-scale heavy-duty equalizing beam thrust bearing considering the rotor misalignment,the high-pair contact deformation equation and the film thickness equation characterized by pivot film thickness were established respectively.Combined with the adaptive dynamic model of equalizing beam component,the influence of the angle and position of rotor misalignment and the contact deformation of the high-pairs of the equalizing beam assembly on the load sharing performance of the bearing under typical working conditions were studied.The results show that the contact deformation of high-pair materials of equalizing beam components can improve the uniformity of the bearing load to a certain extent,but the uneven load difference will be unacceptable as the inclination angle increases.The performances of equalizing beam bearing under three typical projection positions,i.e.,the axis projection passes through the middle of two pads,the pad centerline and the pad pivot have similar characteristics,and the load sharing capacity of equalizing beam component is not completely shared.There is a critical value φ e for the rotor misalignment angle φ ,when φ>φe,the performance difference of the bearing pads will increase significantly.Therefore,it is necessary to consider the high-pair contact deformation and propose a specification for the maximum constrained inclination angle φ when designing the equalizing beam thrust bearing with large size and large load.