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针对工程实际中隔离微幅低频振动的难题,设计出一种能够增大负刚度机构介入程度的剪叉式准零刚度(QZS)隔振器。介绍剪叉式隔振器的设计原理,对其进行静力学分析,探索隔振器的力和刚度特性;比较剪叉式和连杆-弹簧式隔振器中负刚度机构弹簧的压缩量和刚度曲线;利用ADAMS仿真验证剪叉式隔振器的QZS特性和隔振效果,并对其隔振性能进行评价。结果表明,剪叉式隔振器的隔振性能优于线性隔振器,能够实现微幅低频振动的隔离。
Aiming at the problem of isolating micro-amplitude low-frequency vibration in practical engineering, a scissor quasi-zero stiffness (QZS) isolator is designed to increase the intervention of negative stiffness mechanism. The design principle of scissors vibration isolator is introduced, and its static analysis is carried out to explore the force and stiffness characteristics of the vibration isolator. Comparing the compression of spring with negative stiffness in scissors and link-spring isolators Stiffness curve. The QZS characteristics and the vibration isolation effect of the scissors vibration isolator were verified by ADAMS simulation. The vibration isolation performance of the vibration isolator was evaluated. The results show that the vibration isolation performance of the scissors vibration isolator is better than that of the linear vibration isolator.