| 消防多功能抢险车油缸连杆机构的优化 |
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| 引用本文： | 欧阳联格,张梁,刘金武,欧阳莎.消防多功能抢险车油缸连杆机构的优化[J].厦门理工学院学报,2021,29(3):1-7. |
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| 作者姓名： | 欧阳联格 张梁 刘金武 欧阳莎 |
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| 作者单位： | （1厦门理工学院机械与汽车工程学院，福建 厦门 361024；2福建侨龙应急装备股份有限公司，福建 龙岩 364031) |
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| 摘 要： | 针对某消防多功能抢险车油缸连杆变幅机构变形失效问题，采用Creo、Adams与Ansys软件建立油缸连杆机构和履带车力学模型，仿真分析履带车运动过程中连杆各铰点受力情况。结果表明:连杆变形失效的主要原因是其多处位置强度超过材料许用应力。以最大力为边界条件，利用有限元方法对抢险车油缸连杆进行强度分析，并以油缸连杆铰点最大受力值为优化目标，采用灵敏度分析、优化设计的方法对油缸连杆各铰点进行优化。仿真结果表明:优化后连杆各铰点受力峰值降低50%，最大应力值为20814 MPa，比优化前降低513%，小于材料的许用应力，产品未发生变形失效，优化方案有效。
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| 关 键 词： | 消防多功能抢险车 油缸连杆机构 变形分析 动力学仿真 有限元分析 |
Optimization of the Cylinder Rod Mechanism ofa Fire and Emergency Vehicle |
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| OUYANG Liange,ZHANG Liang,LIU Jinwu,OUYANG Sha.Optimization of the Cylinder Rod Mechanism ofa Fire and Emergency Vehicle[J].Journal of Xiamen University of Technology,2021,29(3):1-7. |
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| Authors: | OUYANG Liange ZHANG Liang LIU Jinwu OUYANG Sha |
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| Affiliation: | (1.School of Mechanical & Automotive Engineering,Xiamen University of Technology,Xiamen 361024,China2.Fujian Qiaolong Emergency Equipment,Longyan 364031,China) |
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| Abstract: | To avoid the deformation and failure of the cylinder connecting rod luffing mechanism of a multifunctional firefighting and emergency vehicle,a cylinder connecting rod mechanism and a mechanical model of the crawler vehicle is established using Creo,Adams and Ansys,and the force of each hinge point of the connecting rod during the movement of the crawler vehicle simulated and analyzed.It is found that the main reason for the deformation and failure of the connecting rod is that its strength at many locations exceeds the allowable stress of the material.A finite element analysis is then conducted of the strength of the emergency vehicle cylinder connecting rod using the maximum force as the boundary condition,and arrangement of each hinge point of the cylinder connecting rod mechanism optimized,targeting at the maximum force of the cylinder connecting rod hinge point,and using sensitivity analysis and optimization design.The simulation results show that after optimization,the peak force of each hinge point of the connecting rod is reduced by 50%,and the maximum stress value is 208.14 MPa,which is 51.3% lower than before optimization and less than the allowable stress of the material,while the product remains free of deformation or failure,which proves the effectiveness the optimization scheme. |
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| Keywords: | fire and emergency rehiclehydraulic cylinder connecting rod mechanism deformation analysis dynamic simulation finite element analysis |
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