RELATION BETWEEN SUPPORTING ROLLER

FATIGUE FATE OF ROTARY KILN AND AXIS

LINE AND HOW TO PREDICT ITS FATE

LI Xuejun¹  SHEN Yiping¹  CHU Fulei²

(1. Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment,

Hunan Science and Technology University, Xiangtan 411201;
2. Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084 )

Abstract: When the fatigue fate of supporting roller of rotary kiln is analyzed quantificationally, load ratio is introduced. The roller stress distributing rule, under different load ratio and vertical load is analyzed with finite element method. Based on the rule, the linear relations between roller largest stress and equivalence stress and load ratio are derived. And the relations between fatigue scathe and fatigue fate and axis line deflection are deduced. The practical example is given to predict fatigue fate of roller with axes measuring, which provides useful theory reference to maintain and regulate rotary kiln. The study indicates that the axis reasonable regulated can increase fatigue fate and reduce fatigue crack of roller.

Key words: Rotary kiln Load ratio Axis line deflection Fatigue fate Predict

CLC No: TH1123⁺3

湖南省自然科学基金(05JJ20012)、中国博士后科学基金(2005038006) 和湖南省科技攻关(05CK3034)资助项目. Received 20051111, received in revised form 20060608