• CN:11-2187/TH
  • ISSN:0577-6686

›› 2007, Vol. 43 ›› Issue (10): 181-186.

• 论文 • 上一篇    下一篇

全挂车形式叉车悬架弹性结构的优化设计

王勇;赵永平;丁渭平   

  1. 总后勤部建筑工程研究所;西南交通大学机械工程学院
  • 发布日期:2007-10-15

OPTIMIZATION DESIGN OF ELASTIC STRUCTURE IN SUSPENSION OF TRAILED FORKLIFT

WANG Yong;ZHAO Yongping;DING Weiping   

  1. Architecture Engineering Research Institute, General Logistics Department of PLA School of Mechanical Engineering, Southwest Jiaotong University
  • Published:2007-10-15

摘要: 针对全挂车叉车原始样车的设计特点进行分析,指出原始设计的主要不足之处,提出一个旨在改善其高速行驶稳定性的悬架弹性结构修改方案。进而,将优化设计原理应用于悬架弹性结构的匹配设计领域。基于车辆系统的动、静力学分析,结合对整车高速行驶稳定性影响因素的讨论,建立相应的优化模型并进行求解,从而确定出能够满足整车高速行驶稳定性设计要求的悬架弹性元件的最佳刚度特性。最后,对优化设计的有效性加以检验。一方面,建立悬架系统与整车匹配分析的功能虚拟样机,对全挂车叉车在高速拖行状态下的稳定性进行仿真,结果表明:经过优化设计的全挂车叉车,其高速行驶稳定性获得了明显提高。另一方面,以优化设计结果为指导,完成了新一轮样车试制,并在实际道路条件下对优化前、后的样车进行高速拖行稳定性对比试验,结果同样表明:针对悬架弹性结构的优化设计,的确可改善整车的高速行驶稳定性。

关键词: 高速行驶稳定性, 全挂车叉车, 悬架弹性结构, 优化设计

Abstract: Analyzing the design features of the original physical prototype of a trailed forklift, the primary shortcoming in original design is pointed out, and a blue print of modification about the elastic structure in suspension is put forward to improve its high-speed running stability. Then the theory of optimization design is applied in the field of matching design on the elastic structure in suspension. Based on the dynamic and static mechanical analysis of vehicle system, and combining the discussing on the influence factors about high-speed running stability of entire car, the corresponding optimization model is set up and solved, by which, the optimum rigidity peculiarities of the elastic components in suspension are determined to satisfy the design requirements of high-speed running stability of the vehicle. Finally, the validity of the optimization design is validated. On the one hand, the functional virtual prototype(FVP) about matching analysis between suspension system and entire car is built to simulate the stability of the trailed forklift in state of high-speed dragging running, and the simulation results indicate that the high-speed running stability of the optimized vehicle is improved obviously. On the other hand, guided by result of the optimization design, a new round physical prototype is trial-produced, then the contrast tests between the original and the optimized physical prototypes about high-speed stability in state of dragging running on real road condition are implemented, and the test results also indicate that the high-speed running stability of the entire car is surely ameliorated by means of the optimization design of the elastic structure in suspension.

Key words: Optimization design, Elastic structure in suspension, High-speed running stability, Trailed forklift

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