锤用粘滞流体阻尼器减振新技术及其应用

New technique of viscous fluid damper vibration reduction and its application in forging hammer

锻锤在打击过程中产生的振动和噪声是危害人体健康和污染环境的公害,其隔振降噪一直是学者们研究的课题。在分析目前锻锤采用的各种减振措施以及粘滞阻尼的耗散原理的基础上,提出并设计了锤用新型粘滞流体阻尼减振器。以1t锤为例,通过MATLAB仿真模拟和模拟实验分析了新型粘滞流体阻尼的减振器减振效果,为进一步说明其显著地减振效果,与现有5t自由锻锤的减振数据进行了对比,数据表明:新型粘滞流体阻尼减振器的锻锤较大程度地降低了锻锤砧座与基础的振幅以及对地基的冲击力,即使与第四类地基土中基础位移0.4mm、加速度0.45g相比,仍然具有减小振幅68%、降低振动加速度20.7%的减振效果。

Vibration and noise produced by forging hammer are harmful to human health and environment. So vibration isolation and noise reduction become the interesting researching objects for scholars. Based on analysis of various vibration reduction measures for forging hammer and the consumption principle of viscous fluid damper, the new type of viscous fluid damper vibration reduction for hammer has been put forward and designed. Meanwhile, taking the It forging hammer as an example, the vibration reduction effect of the new damper has been analyzed by use of MATLAB simulation and test. Furthermore, in order to improve the significant vibration reduction effect, the data has been compared with the 5t open die forging hammer. The data shows the amplitude of hammer anvil and foundation has been sharply reduced, as well as the impact on the ground. Even in the condition of 4th foundation, when foundation displacement is 0.4mm and accelerated velocity is 0.45g, the amplitude and vibration accelerated velocity have been lowered by 68% and 20.7%, respectively.