径向不对中对高速滚动联轴器特性影响的研究

滚动联轴器是在国家科技攻关项目研究中发明的一项发明专利产品.为了揭示滚动联轴器在高速传动中的不对中特性规律,基于滚动联轴器啮合数学模型,采用耦合矩阵法,建立了联轴器一转子径向不对中耦合振动方程,结合实际试验模型,对比计算分析了联轴器分别在完全对中与径向不对中量分别为0.8、1.6、2.4、3.2、4.0 mm情况下的动态响应.计算结果显示,滚动联轴器在高速传动中随着径向不对中量的增大,左、右半联轴器周期性振荡随之加剧;且左半联轴器振荡幅度有加大的趋势,这将导致联轴器左端转子系统因剧烈振荡而失稳,而右半联轴器振荡幅度增加较平稳,受左半联轴器影响不大,有利于平稳传动,说明滚动联轴器能较好地隔离不利振动在轴系间的传递,保护从动系统不受破坏.

Influence of radial misalignment on characteristics of high speed rolling coupling

A kind of rolling coupling was invented in national science research project which has been applied for patent.In order to explore the misalignment characteristics of rolling coupling in high speed transmission,the vibration equations of the multiple-rotor system with rolling coupling was established based on the meshing force mathematical model of rolling coupling and the method of whole coupled matrix.Combined with the actual test model,the dynamic responses in the case of normal operation and radial misalignment with 0.8,1.6,2.4,3.2,4.0 mm was calculated.The results show that the oscillation is gradually increased with radial misalignment increasing at high-speed rotation.And the oscillation of the left-half-coupling tends to be increased,which may lead to the left-side-system to lose stability.However,the oscillation of the right-half-coupling increases smoothly,which is affected little by the left-half-coupling and is good for smooth driving.It is implied that rolling coupling can isolate adverse vibration transmission in shaft systems to protect passive system from damage.