加速工况下滚动轴承动态载荷特性研究

涂文兵,梁杰,罗丫,周建民,周生通

振动与冲击 ›› 2021, Vol. 40 ›› Issue (9) : 152-159.

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (9) : 152-159.
论文

加速工况下滚动轴承动态载荷特性研究

  • 涂文兵,梁杰,罗丫,周建民,周生通
作者信息 +

Dynamic load characteristics of rolling bearing under acceleration condition

  • TU Wenbing, LIANG Jie, LUO Ya, ZHOU Jianmin, ZHOU Shengtong
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文章历史 +

摘要

滚动轴承运动部件的动态效应将对滚动轴承的载荷分布及其性能产生重要作用,特别是在变速工况下。以深沟球轴承为研究对象,考虑轴承游隙、滚动体离心力与重力、内圈和滚动体的动态效应等,建立了滚动轴承动力学分析模型,对加速工况下滚动轴承的运行过程进行了动力学仿真,分析了径向载荷作用下滚动体动态载荷分布特性及其机理,并揭示了游隙、内圈质量和角加速度对滚动体动态载荷的影响。研究结果表明:加速工况下滚动体的载荷分布曲线不再沿载荷作用线对称且出现不同程度的波动,尤其是在加速过程的后期;滚动体的最大接触载荷在加速过程初期基本保持不变,而在后期波动上升,加速过程中内圈的不稳定运动是导致滚动体接触载荷发生变化的主要原因;加速过程中动态载荷的变化程度随着径向游隙和内圈质量的增加而增大,而角加速度的增加使得加速过程后期的动态载荷变化愈加剧烈。本文结果可为滚动轴承载荷计算与设计提供理论依据。

Abstract

The dynamic effect of moving parts of rolling bearing plays an important role in load distribution and performance of rolling bearing, especially, under variable speed conditions.Here, taking a deep groove ball bearing as the study object, its dynamic model was established considering clearance, centrifugal force and gravity of rolling element, dynamic effect of rolling element and inner race.The operation process of the rolling bearing under acceleration condition was dynamically simulated to analyze dynamic load distribution characteristics of rolling element and their mechanism under the action of radial loads, and effects of clearance, inner race mass and angular acceleration on dynamic load of rolling element were revealed.The study results showed that under acceleration condition, the load distribution curve of rolling element is no longer symmetric along the load action line and has fluctuates with different degrees, especially, in the late stage of acceleration process; the maximum contact load of rolling element basically keeps unchanged in the early stage of acceleration process, but fluctuates and rises in the later stage, and the unstable motion of inner race in acceleration process causes the change of contact load of rolling element; the change degree of dynamic load in acceleration process increases with increase in radial clearance and inner race mass, and increase in angular acceleration makes the change of dynamic load more severe in the later stage of acceleration process; the study results can provide a theoretical basis for load calculation and design of rolling bearing.

关键词

滚动轴承 / 加速工况 / 动态载荷 / 动力学

Key words

rolling bearing / acceleration condition / dynamic load / dynamics

引用本文

导出引用
涂文兵,梁杰,罗丫,周建民,周生通. 加速工况下滚动轴承动态载荷特性研究[J]. 振动与冲击, 2021, 40(9): 152-159
TU Wenbing, LIANG Jie, LUO Ya, ZHOU Jianmin, ZHOU Shengtong. Dynamic load characteristics of rolling bearing under acceleration condition[J]. Journal of Vibration and Shock, 2021, 40(9): 152-159

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