四履带轮式车辆转向性能提升技术研究

发布时间：2018-04-18 23:05

本文选题：四履带轮式车辆 + 参数化建模　；参考：《计算机仿真》2016年12期

【摘要】：四履带轮式车辆采用模块化履带轮替换轮胎作为行走机构,能显著降低轮式车辆接地比压,提高牵引力和越野能力,但其转向性能变差。针对四履带轮式车辆的原地转向性能提升技术进行研究,在分析三角履带轮结构组成的基础上,提出在框架上增加助力转向油缸并作用于中部负重轮系的设计方案,分析了助力转向过程,并建立约束条件和目标函数的数学模型。然后建立了虚拟样机模型,并基于多体动力学对助力转向油缸铰接点进行参数化建模与优化设计,根据设计结果进行建模,通过样机试验表明增加的助力转向系统对四履带轮式车辆的原地转向性能提升有显著作用。整个设计分析方法通用性强,设计与优化过程实现了"仿真分析在设计中进行"的设计思想,对机械数字样机设计具有指导意义。
[Abstract]:The four-track wheeled vehicle adopts modular track wheel replacement tire as walking mechanism, which can significantly reduce the earthing specific pressure of wheeled vehicle, improve traction and cross-country ability, but its steering performance becomes worse.On the basis of analyzing the structure composition of triangular crawler wheel, the paper puts forward the design scheme of adding the help steering cylinder on the frame and acting on the load bearing gear train in the middle part of the vehicle, based on the research on the in-situ steering performance lifting technology of the four-track wheeled vehicle, and on the basis of analyzing the structure of the triangular caterpillar wheel.The process of power steering is analyzed, and the mathematical model of constraint condition and objective function is established.Then the virtual prototype model is established, and the parameterized modeling and optimization design of the hinge point of the steering cylinder are carried out based on the multi-body dynamics, and the model is built according to the design results.The experimental results show that the increased power steering system can improve the in-situ steering performance of four-track wheeled vehicles.The whole design and analysis method is universal, and the design and optimization process realizes the design idea of "simulation and analysis in design", which is of guiding significance to the design of mechanical digital prototype.
【作者单位】：军械工程学院弹药工程系;军械技术研究所;泸州长起特种起重设备有限公司;
【基金】：军内科研项目(装司2012655) 国家自然科学基金资助项目(61471385)
【分类号】：U469.694

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