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轻型货车循环球式转向器设计 摘要 循环球式转向器是由螺母与丝杠传动副以及齿扇轴与螺母传动副二个部分组成。螺母与丝杠传动副是由里面的钢珠联系起来的，而齿扇轴与螺母传动副则是通过齿之间的啮合联系的，最终完成了力的传递。 本文首先对汽车转向器目前研究的概况和发展趋势做出了阐述说明，研究BJ2020车型汽车转向系统，整理出汽车转向系统的设计要求，然后根据汽车的类型、汽车的前后轴的负荷以及汽车的用途选择了初步的转向器类型，随后进行汽车转向器选型分析并完成总结，完成循环球式转向器各项主要参数的选择，并根据循环球式转向器的角传动比、传动效率以及使用用途并参考以往的成功车的型号对循环球式向器的强度和具体参数进行了计算，再进行循环球式转向器性能分析最后完成设计图纸以及设计说明书。最后用建模的方式画出了转向器的三维设计图，从立体的角度反映了转向器的结构功能。还有零件图，画出了循环球式转向器零件的尺寸。装配图画出了各个零件之间的配合，更全面反映了循环球式转向器的结构。受力分析则清晰的展现了循环球式转向器的各种受力情况。 设计最后完成了BJ2020转向器从结构形式的初步选择到制造工艺最后布置的所有设计，所有设计合乎标准。 关键词：循环球式转向器；工艺布置；受力分析 ABSTRACT Ecirculati
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nalysis 目录 摘要I ABSTRACT II 1绪论1 1.1课题背景1 1.2转向器的介绍1 1.3国外的研究现状5 1.4国内的研究现状5 1.5本课题研究的主要内容6 1.6本章小结7 2转向器的设计与参数选择8 2.1转向器的主要使用性能参数8 2.2主要尺寸参数的选择10 2.3循环球式转向器的强度校核18 2.4转向摇臂轴直径的确定20 2.5本章小结21 3建模及受力分析22 3.1二维工程图22 3.2三维零件图24 3.3受力分析27 3.4本章小结30 4结论31 参考文献32 附录1：外文翻译33 附录2：翻译原文37 致谢41