摘要：This thesis focuses on the problems of high-temperature furnace motor in term of rotary shaft over length as well as deformation tendency under high-temperature condition, and therefore the thesis conducts design optimization upon rotary shaft of a motor that is applied in high-temperature furnace regarding its mechanical property and thermal-stress distribution. First, it establishes a full-scale 3D model of the shaft-fan system, then it analyzes its mechanical properties such as rigidity and stiffness under the high-temperature environment, which bases on reasonable assumed conditions and the boundary conditions, where hence the thesis puts forwards an optimized dimension design solution for the motor rotary shaft. And then the thesis analyzes and calculates the shaft- fan system to improve the motor shaft size from the angle of thermal stress and thermal deformation consideration and the special characteristics of such motor working under high-temperature environment. And the improved motor shaft size is verified as reasonable. The thesis analysis can be the designing references for cooling system applied in the high-temperature furnace motor.
