双曲柄输入内平动齿轮传动的运动学与动力学研究

发布时间：2018-04-17 01:12

  本文选题：内平动齿轮传动 + 运动学　； 参考：《广西大学》2012年硕士论文

【摘要】：本文针对现有外平动三环传动机构存在外形尺寸较大,振动、噪声高的问题,依据平动齿轮传动的基本原理设计了一种新型的双曲柄输入内平动齿轮传动装置,该装置采用两级分流式输入,并通过三片平动外齿板与内齿环啮合将运动输出,具有结构紧凑、成本低、传动比大、运转平稳以及完全的动平衡结构等优点,是一种适用现代机械对传动技术新要求的新型传动装置。 本文介绍了新型内平动齿轮传动装置的基本结构,传动条件及其几何设计,确定出合理的设计参数,并应用Pro/ENGINEER软件建立该传动装置的实体模型,进行运动仿真分析。经检验,该装置符合机构运动学的要求。 建立了新型内平动齿轮传动系统的弹性动力学模型,将其划分成曲柄轴Ⅰ、曲柄轴Ⅱ、外齿板及带内齿环的输出轴四个子系统,通过考虑曲柄轴的弹性变形,曲柄轴行星轴承与输出轴支撑轴承及齿轮副处的弹性变形,推导出各构件之间的弹性变形协调关系,再根据牛顿第二运动定律,建立各个子系统的振动微分方程,然后将弹性变形协调关系代入各振动微分方程得到整体的弹性动力学方程。 针对系统弹性动力学方程中的质量、刚度和阻尼矩阵,本文给出了具体的求解方法,通过MATLAB软件编程,得出该新型内平动齿轮传动系统的固有频率。 采用Newmark法求解出齿轮啮合力、曲柄轴行星轴承载荷、曲柄轴支撑轴承载荷及输出轴支撑轴承载荷,并进行动态仿真分析,结果表明：采用双曲柄输入可以确保运动的确定性；采用三相平动外齿板传动可以降低输入轴、输出轴支撑轴承的载荷；行星轴承承受的载荷较大,幅值变化也大,易产生疲劳点蚀。
[Abstract]:In this paper, a new type of double crank input internal translational gear transmission device is designed according to the basic principle of the translational gear transmission, aiming at the problems of large shape size, high vibration and high noise in the existing external translational three-ring transmission mechanism.The device adopts two-stage shunt type input, and meshes the inner gear ring with three flat-moving outer tooth plates. The device has the advantages of compact structure, low cost, large transmission ratio, smooth operation and complete dynamic balance structure, etc.It is a new type of transmission device suitable for the new requirements of modern mechanical transmission technology.In this paper, the basic structure, transmission conditions and geometric design of a new type of inner translational gear transmission are introduced. The reasonable design parameters are determined, and the entity model of the transmission is established by using Pro/ENGINEER software, and the motion simulation analysis is carried out.After examination, the device meets the requirements of mechanism kinematics.An elastic dynamic model of a new type of inner translational gear transmission system is established, which is divided into four subsystems: crank shaft 鈪，

本文编号：1761396