| 李圣,滕儒民,王欣,王殿龙,李杰.折臂式举高消防车臂架系统振动特性研究[J].,2016,56(5):457-465 |
| 折臂式举高消防车臂架系统振动特性研究 |
| Research on vibration characteristics of folding boom system for aerial work fire-truck |
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| DOI：10.7511/dllgxb201605004 |
| 中文关键词: 折臂式 举高消防车 振动特性 动挠度 |
| 英文关键词: folding boom aerial work fire-trucks (AWFs) vibration characteristics dynamic deflection |
| 基金项目:国家自然科学基金资助项目(51475068). |
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| 中文摘要: |
| 举高消防车臂架系统多采用折叠臂形式，控制其末端平台工作过程中的动响应是提高举高消防车使用性能的重要途径，而臂架系统弯曲振动方程求解是研究此类问题的基础．为此，以百米级折臂式举高消防车臂架系统为研究对象，基于哈密顿原理推导了各节臂架的弯曲振动方程，并求解出了一号臂架和二号臂架前三阶振型函数挠度曲线及对应固有频率．通过实例在Simulink环境下模拟一号臂架和二号臂架在已知二号臂架仰角变化条件下的末端动挠度响应特性曲线，为大高度折臂式举高消防车末端平台振动抑制提供了理论准备． |
| 英文摘要: |
| The folding boom is widely used in aerial work fire-trucks (AWFs). In order to improve AWFs′ working performance, an important way is to control the dynamic response of the tip platform during operation, whose foundation is how to solve the bending vibration equation of the boom system. As an example of folding boom system of 110 m AWF, the bending vibration equations for each boom are established, and then, the first three-order deflections curves of vibration shape function and corresponding natural frequencies of the first and second booms are obtained by the Hamilton principle. According to the elevation angle of the second boom, response curves of the dynamic deflections of the first and second booms tip are simulated in Simulink with this actual case. This study provides theoretical preparation for vibration control of AWFs tip platform. |
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