单、双径向轴承安装时三叉式万向联轴器的附加弯矩分析

发布时间：2018-02-24 04:15

本文关键词： 三叉式万向联轴器单、双径向轴承偏转弯矩附加弯矩　出处：《工程设计学报》2017年02期 　论文类型：期刊论文

【摘要】：为找出三叉式万向联轴器在安装和使用过程中出现振动、噪声的原因,分析采用单、双径向轴承安装三叉式万向联轴器输出轴时联轴器附加弯矩随输入轴转角及偏转角的分布规律。首先建立2种安装方式下联轴器的运动简图,应用空间机构坐标变换技术建立输入轴与输出轴的关系方程,推导出系统存在偏转角时输出轴的运动方程,表明输出轴采用单径向轴承安装时三叉式万向联轴器为准等角速传动,采用双径向轴承安装时其具有等角速传动特性。其次分析这2种安装方式下作用在输入轴和输出轴上的附加弯矩分量,根据虚位移原理确定三叉式万向联轴器输出轴在2种安装方式下系统均出现附加弯矩。通过分析发现:采用单径向轴承安装时,存在偏转弯矩,且一个运动周期内附加弯矩的波动频率是输入轴的3倍,呈正弦曲线变化,且附加弯矩的变化趋势为随偏转角的增大呈直线上升;双径向轴承安装时,偏转弯矩为零,附加弯矩随偏转角的增大而逐渐增大,未出现波动。结果表明:2种安装方式下三叉式万向联轴器上均产生附加弯矩,从而使系统产生振动效应。该结果对研究系统产生振动的原因、确定系统非线性动力学行为具有重要的意义。
[Abstract]:In order to find out the universal coupling vibration in the process of installation and use, the cause of noise, analysis by single, double radial bearing installation universal coupling output shaft coupling with the input shaft angle and additional bending moment distribution angle. Firstly, the motion diagram of 2 kinds of installation way under the coupling relation between the input, set up equation of shaft and the output shaft of the coordinate transformation technology of space mechanism are derived, the equations of motion of the output shaft deflection angle, shows that the output shaft with single radial bearing installation universal coupling for quasi constant velocity drive, double radial bearing installation which has the property of constant angular velocity. Secondly the analysis of the 2 kinds of installation under the action of the additional moment component in the input shaft and the output shaft, according to the principle of virtual work to determine the universal coupling output shaft in 2 installed under the Department of There are the additional moment. It is found that the single radial bearing installation, deflection and bending moment exists, fluctuations in the frequency of a moving period of additional moment is 3 times of the input shaft, a sine curve, and the change trend of the additional moment increased with the increase of deflection angle; double radial bearing installation when the deflection moment is zero, the additional bending moment with the deflection angle increase, not fluctuations. The results show that 2 kinds of installation way under universal coupling are additional bending moment, so that the system vibration effect. The results of the study on the cause of vibration system, has important significance to determine the nonlinear the dynamics of the system.

【作者单位】：青岛科技大学机电工程学院;
【基金】：国家自然科学基金资助项目(50975147) 山东省科技发展计划项目(2013GGX10305) 山东省自然科学基金资助项目(ZR2015EM037,ZR2016EEP12)
【分类号】：TH133.4

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