摘要
可倾瓦块的弹性支点能够改善轴承的润滑性能和动力学性能。针对带预紧弹簧的可倾瓦支点结构,分析了弹性支点可倾瓦轴承的工作过程,并基于瓦块支点受力平衡提出了一种弹性支点的图解设计方法。根据特定工况条件下的动力学性能要求,合理设计弹性支点的刚度和预紧力等参数;针对案例轴承设计了弹性支点的结构。结果表明:通过在3 000~10 000 r/min范围内轴承动力学性能的自适应调节,可使可倾瓦轴承的综合刚度保持为256 N/μm,从而提高变工况条件下转子系统的运动精度。
The elastic pivot of the tilting pad can improve the lubrication performance and dynamics performance of the bearing.For the tilting pivot structure with pre-tightened spring,the working process of the elastic pivot tilting pad bearing is analyzed in this paper,and a graphical design method of elastic pivot based on force balance of the tilting pad pivot is proposed.According to the dynamic characteristics requirements of specific working conditions,the parameters of the elastic pivot are designed properly,such as stiffness and pre-tightening force.For the case bearing,the structure of the elastic pivot is designed.The bearing stiffness can be kept at 256 N/μm through the self-adaptive regulation of the dynamic characteristics within the speed range 3 000~10 000 r/min.And then the kinematic accuracy of the rotor system in different working conditions is improved.
作者
陈润霖
曹亚伟
崔亚辉
袁小阳
CHEN Run-lin;CAO Ya-wei;CUI Ya-hui;YUAN Xiao-yang(School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi'an,China,710048;School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an,China,710049)
出处
《热能动力工程》
CAS
CSCD
北大核心
2020年第8期32-37,共6页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金(11802232)
国家重点基础研究发展计划(973计划)子课题(2015CB057303-2)
陕西省博士后科研项目(2018BSHQYXMZZ03)
陕西省教育厅科研计划(18JK0569)。
关键词
可倾瓦轴承
弹性支点
预紧弹簧
图解设计方法
动力学性能
tilting-pad bearing
elastic pivot
pre-tightened spring
graphical design method
dynamics performance
