摘要：Three-row roller slewing bearings are the core components of large-scale rotating equipment, which consists mainly of three-row rollers, slewing rings and spacer blocks, as shown in Fig. 1. It is a large-sized structure (a maximum diameter of 40 m) and subjected to a combination of large axial, radial and overturning moment loads. The maximum thrust of the slewing bearings can reach 170,000 kN under heavy load conditions and the maximum torque can reach 125,000 kN·m [1]. The contact area between the rolling element and the raceway is very small, and the contact stress is extremely high. When an accident occurs, the maintenance is very difficult and expensive, which will affect the progress of the project. Therefore, the carrying capacity of the slewing bearing needs to be carefully calculated to improve the reliability of the slewing bearing.
关键词：three-row roller slewing bearing; carrying ca_x0002_pacity; finite element mesh size; nonlinear spring stiffness; analysis accura
