Temperature Rise on Tapered Roller Bearing Kinematic Characteristics and Analysis

Abstract

In a variety of mechanical equipment, bearings play a vital role. When the mechanical equipment is in high-speed operation, the importance of the bearing is more prominent, because it is not only used to support and locate the rotary axis, but also directly affects the bearing capacity of the entire system and the working life of the important mechanical parts. To fulfil the prerequisites of high-speed mechanical equipment for precision and load-bearing capacity, tapered roller bearings came into being. This type of bearing has many advantages: tapered roller bearings roller and inner and outer ring raceways are tapered, can withstand radial and axial loads, so the transmission accuracy is higher; tapered roller bearings structure is more reasonable, can withstand larger radial and axial loads, bearing capacity; tapered roller bearings rolling body and the raceway contact area is large, the coefficient of friction is small, so the friction in high-speed operation heat is small, smooth operation; tapered roller bearings and raceway contact area is large, friction coefficient is small, so in high speed running small, smooth operation. Tapered roller bearings demonstrate outstanding performance and enjoy extensive utilization in high-speed railroad, aerospace, heavy machinery and other fields. In this paper, the tapered roller bearings in a 2.8 MW wind power gearbox are taken as the research object, and the bearing thermodynamic model is constructed in Matlab Simulink. The kinetic equations of the outer ring and inner ring of the bearing are solved.