【作者】 谭勇虎；

【导师】 朱才朝；

【作者基本信息】 重庆大学 ， 机械设计及理论， 2004， 硕士

【摘要】 环式减速器以其结构简单、传动比大、体积小、承载能力大、传动效率高等优点，近年来得到了迅速的发展。但该传动装置在高速、重载和大传动比情况下振动和噪声大、温升高及轴承早期破坏等问题，大大影响了其推广进程，成为亟待解决的关键技术难题。 为了解决环式减速机在高速、重载情况下的振动与噪声大等问题，本文在研究现有环式减速机传动原理的基础上，提出两级同轴式双环减速机。该种减速机由一级普通圆柱齿轮传动和一级双环齿轮传动构成。本文对该减速机的传动原理、运动学和动力学进行了分析，在此基础上设计制造出样机，并进行了相应实验研究，取得了较好的效果。本文的研究主要内容如下： ① 提出一种新的结构形式的环式减速机—同轴式两级双环减速机，建立了该减速机的三维实体模型并进行虚拟装配，对其结构及受力进行分析，并用ADAMS软件对其受力情况进行仿真； ② 用弹性有限元法对双环减速机的内啮合进行接触应力计算，得出最大应力值和实际接触齿对。为减速机的几何参数的选择提供了可靠的依据； ③ 建立了两级同轴式双环减速机的零件及系统耦合的有限元模型，在此基础上分析了环板、偏心轴、箱体及耦合系统的模态，得到环板、偏心轴、箱体的前10阶固有频率和振型与耦合系统的前20阶固有频率和振型； ④ 计算了时变刚度和误差引起的动态内部激励，根据耦合系统的模态，用振型叠加法对系统进行响应分析，预估了该种同轴式两级双环减速机在齿轮内部动态激励下的动态响应，较全面地研究了该种双环减速机的动态特性； ⑤ 在此基础上设计制造出样机，在齿轮传动系统动态实验台上，对其传动效率、动态特性进行了实际测试。测试结果表明：该两级同轴式双环减速机传动效率达到96％振动方面也有所改善。更多还原

【Abstract】 Ring reducer is developed very quickly in recent year due to its features such as its simple and compact structure, high driving ratio, large loading capacity and high driving efficiency. But some problems, including great noises, high temperature and the early-worn of bearings occurring under the condition of high-speed operation, heavy loading and high transmission ratio, influenced seriously its popularization progress and are urgent to be solved.Based on the study of driving principle of current ring reducer, this dissertation suggested a two-stage coaxial double-ring reducer in the purpose of solving the high vibration and noise problems of ring reducer under the condition of high-speed and heavy-load operation, which consists of one-stage cylindrical gearing and one-stage dual-ring gearing. Bases on the analysis of the transmission theory, kinematics, dynamics of the suggested reducer, the author designed and manufactured a prototype of the suggested reducer, made some relevant researches and got a satisfying result. The major research works in the paper are listed as follows::(1) Provided a new-structured ring reducer, i.e. two-stage coaxial dual-ring gear reducer, set up its three-dimension model and assembled the model in the virtual condition, analyzed the structure and forces bearing situation of the new reducer and simulated the forces bearing situation using ADAMS software.(2) Calculated the contact stress of the inner meshing of the dual-ring reducer by means of finite elements method, and learned the maximum stress value and the actual pairs of contact teeth, which became a reliable source for selecting geometry parameter of reducer;(3) Set up the Fern model of parts and coupling system of the reducer, based on which, analyzed the mode of the ring-like plate, the eccentric axis, the gear box and obtained top 10-rank inherent frequency and vibration mode as well as the top 20-rank inherent frequency and vibration mode of coupling system;(4) Calculated the inner excitation of gear resulting from varying stiffness and error of gear, analyzed the response of the system by means of vibration superposition method based on coupling system mode, and predicted the dynamic response of the dual-ring reducer under dynamic inner excitation, and made a broad study of the dynamic characteristics of the reducer;(5) Designed and manufactured a prototype and tested practically its efficiency and the dynamic characteristics on gearing system dynamic experiment desk. The test result indicated that the two-stage coaxial double-ring reducer reached an efficiency of 96% and is improved on the vibration.更多还原