载重车十吨桥空气悬架开发设计.doc

载重车十吨桥空气悬架开发设计 摘 要 我国目前载重车支承桥配用的悬架基本上是钢板弹簧，只有少数的专用载重车才配置了空气悬架。相对于传统的机械钢板弹簧悬架来说，空气悬架具有乘坐更舒适安全、改善车辆的行驶平顺性等显著优点。对于我国汽车业而言，空气悬架项目不仅仅是一个难得的商机，更重要的是，谁先掌握了汽车空气悬架的开发技术，谁领先开发出配置空气悬架的成熟车型，谁就掌握了今后若干年内商用车市场的先机。 本文针对空气悬架的开发设计，准备首先从传统的汽车部件设计方法出发。综合国内外典型的空气悬架设计方案，查阅汽车设计的相关标准，初步确定与悬架相关联的各零件的大致尺寸并初步确定其形状。然后分析各零件的受力情况，按照强度、刚度、疲劳理论进行校核、计算。 在校核、计算的基础上，确定各零件的相对位置关系，并运用CATIA对空气悬架各零件进行建模和装配。 为了能够直观的表示出零件的应力、应变，需要进行有限元分析。在分析的过程中，按照其实际工作中的约束和载荷状况对其进行加载和加约束。计算机自动计算后通过不同的方式观察其应力应变情况，再对零件图和装配图进行修改，直到得到满意的结果为止。 设计好的悬架要能满足生产的需要，需要对各零件拟定合理的工艺路线。 关键词 空气悬架；CATIA；有限元分析；工艺路线 Truck ten ton bridge Air Suspension Fork development Design Abstract Our country present truck supporting bridge uses for parts the suspension fork basically is the spring, only then the minority special-purpose truck has only then disposed the air suspension fork. Was opposite in the traditional mechanical spring suspension fork, the air suspension fork had while does nightwatch the comfortable security, to improve vehicles smooth running and so on remarkable merit. Speaking of our country automobile industry, the air suspension fork project is not only a rare opportunity, more importantly, who has mastered the automobile air suspension fork development technology first, who is in the lead develops the disposition air suspension fork the mature vehicle type, who has grasped next within a certain number of years commercial vehicle market taking the initiative. This article in view of the air suspension forks development design, the preparation first embarks from the traditional automobile part design method. Synthesizes the domestic and foreign models the air suspension fork design proposal, consults the automobile design the related standard, the preliminary determination and the suspension fork are connected the various components approximate size and determines its shape initially. Then analyzes various components the stress situation, according to the intensity, the rigidity, the fatigue theory carries on the examination, th