摘要
建立了组合辊过盈联接的几何模型,以GM1400×800高压辊磨机组合辊为研究对象,得到组合辊承载扭矩的关键结构参数,在确定过盈量参数范围并选取适当的过盈量基础上,分析了组合辊接触表面鼓形误差对组合辊承载扭矩的影响。分析结果表明：适当的鼓形误差不仅能减小组合辊结合面两端的应力集中,而且使得结合面径向应力分布更均匀,径向平均应力值得到提高。当过盈量等于0.45mm,鼓形误差小于0.07mm时,最大承载扭矩随鼓形误差单调递增,鼓形误差等于0.07时,达到最大值,此后,随着鼓形误差的增大,其承载扭矩逐渐减小。因此,为了减小组合辊结合面两端应力集中,组合辊的鼓形误差的最佳范围应控制在0.03~0.07mm。
Taking the combined roller of GM1400×800high pressure grinding rolls as the object,a combined roller geometric model of an interference connection is proposed.The key structural parameters of the combined roller bearing torque were obtained.With the determined unilateral interference quality range and selected appropriate value,the influence of drum-shape error on combined roller contact surface bearing torque of high pressure grinding rolls was analyzed.The results show that proper drum-shape error can not only reduce stress concentration on both ends of the combined roller,but also make the radial stress distribution on the contact surface more uniform and increase the average radial stress value.When the unilateral interference quantity equals to 0.45 mm,the torque capacity of the combined roller increases monotonously with the drum-shape error if the error is lass than 0.07 mm,and when the error equals to 0.07 mm the capacity reaches the maximum value.Hereafter,the torque capacity gradually decreases as the error increases.Therefore,to reducethe stress concentration on both ends of the combined roller,the drum-shape error should be controlled within the range of 0.03 mm to 0.07 mm.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2015年第2期466-472,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(51375498)
关键词
矿山机械工程
组合辊
扭矩
鼓形误差
过盈量
mine mechanical engineering
combined roller
torque
drum-shaped error
magnitude of interference
