【摘要】 本文在简要分析国内外现有扭转疲劳试验台结构方案及性能特点的基础上,着重介绍了新研制成功的微机控制扭转疲劳试验台的结构原理与主要设计特点:该试验台除采用了常见的离心激振器,并对其进行局部改进外,还采用了独具特点的扭杆弹簧预加载荷机构,减轻了试验台的振动,降低了噪音;利用飞轮吸收激振器的反馈能量,减少了电机至激振器间传动部件的载荷波动;采用微机控制与测试技术,实现了试验台的多种自动控制、显示和记录的功能。更多还原

【Abstract】 Based on the analysis of structure and performance characteristics of the existing twisting fatigue testing stand,this paper mainly introduces structure, principle and basic design features of the microcomputer-controlled twisting fatigue testing stand.Besides employing the modified usual centrifugal vibrator, the new testing stand adopts a special twisting springbeam pre-loading mechanism, reducing vibration and noise of the testing stand.The testing stand can also reduce the load variation of the transmission parts between the motor and the vibrator with a flywheel which can absorb feedback energy of the vibrator.The testing stand utilises microcomputer measuring and controlling technology so as to realize automatic data displaying, recording and processing and achieve multi-automatic controlling functions.更多还原