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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。
Based on the brief analysis of the existing structural schemes and performance characteristics of torsional fatigue test rigs both at home and abroad, this paper mainly introduces the structural principle and main design features of the newly developed microcomputer controlled torsional fatigue test rig: In addition to the common Centrifugal exciter, and its local improvements, but also the use of a unique torsion bar spring preload mechanism to reduce the vibration of the test rig and reduce the noise; the use of flywheel vibration exciters to absorb energy to reduce The motor to the exciter transmission components between the load fluctuations; using computer control and testing technology to achieve a variety of test bed automatic control, display and recording functions.