大型矿用自卸车轮边减速器的齿轮修形研究

发布时间：2018-05-17 16:52

本文选题：轮边减速器 + 啮合刚度　；参考：《湘潭大学》2017年硕士论文

【摘要】：随着工程机械的发展,其对齿轮传动的要求正向着高速重载的方向前行,对齿轮传动性能与可靠性等提出了更高的要求。为了在不改变齿轮的几何尺寸和提高齿轮生产成本的前提条件下对齿轮进行适合的齿廓修形和齿向修形是保证重载齿轮的传动性能和使用寿命重要的方法。本文将以154T矿用自卸车轮边减速器为研究对象,通过分析轮边减速器在额定载荷下的齿轮轴与齿轮轮体的变形、齿轮啮合时的传动误差、齿向载荷分布情况,按照齿轮修形原理提出了齿轮齿廓和齿轮齿向修形的方案。主要研究内容如下:1)叙述了齿轮接触分析理论与前人研究得到的齿轮轮齿变形计算公式,在考虑了齿轮轴弹性变形与齿轮轮体变形对轮齿变形的影响下用石川公式求得齿轮的综合变形量,然后再根据对刚度定义求出齿轮啮合刚度,为154T矿用自卸车轮边减速器中的齿轮修形参数计算提供理论基础。2)运用机械传动系统Romax Designer软件建好轮边减速器传动系统模型,介绍了齿轮齿面受载接触分析理论,并利用Romax Designer软件对建好的轮边减速器模型进行仿真分析。分析结果表明该传动系统存在偏载现象与现实使用中出现的情况一样,为了解决这类问题需要对轮边减速器中的齿轮进行修形。3)介绍了齿轮齿廓修形相关原理和齿轮齿廓修形参数的确定方案,在MATLAB软件中开发了齿轮修形相关参数计算的小程序。通过程序计算得到了齿轮修形的初始数据,通过对模型的仿真分析,证明了计算出来的齿轮修形初始量是合理的,对选择不同的修形曲线进行修形的齿轮仿真,通过仿真结果对比分析确定了符合轮边减速器齿轮的修形曲线。通过对接触分析结果对比,说明齿轮齿廓修形可以减小齿轮在啮合时产生的传动误差,通过动力学分析软件ADAMS对修形前后的齿轮进行动力学分析比较,对比结果表明齿廓修形提高了齿轮传动的平稳性。4)介绍了齿向修形原理和齿向修形相关参数的确定方案。通过对轮边减速器仿真分析,得到相关齿轮轴变形为轮边减速器中齿轮齿向修形参数的计算提供了初始条件;通过分析不同修形量下的齿向单位长度载荷分布情况,获得最优的齿轮齿向修形参数。对修形前后轮边减速器中齿轮进行接触分析对比,对比结果说明齿轮齿向修形可以改善齿面的载荷分布。
[Abstract]:With the development of construction machinery, the requirement of gear transmission is moving forward to the direction of high speed and heavy load, which puts forward higher requirements for the performance and reliability of gear transmission. In order to ensure the transmission performance and service life of heavy-duty gear, it is important to modify the profile and direction of the gear without changing the geometric dimension of the gear and increasing the production cost of the gear. Taking the wheel edge reducer of 154T mine dump truck as the research object, this paper analyzes the deformation of gear shaft and gear body of wheel edge reducer under rated load, the transmission error of gear meshing, and the distribution of tooth load. According to the principle of gear modification, the scheme of gear tooth profile and gear tooth profile modification is put forward. The main research contents are as follows: (1) the theory of gear contact analysis and the calculation formula of gear tooth deformation obtained by predecessors are described. Considering the influence of elastic deformation of gear shaft and deformation of gear body on gear tooth deformation, the comprehensive deformation of gear is obtained by Shi Chuan formula, and then the meshing stiffness of gear is obtained according to the definition of stiffness. This paper provides a theoretical basis for the calculation of gear modification parameters in the wheel edge reducer of 154T mine dump truck. Using the mechanical transmission system Romax Designer software, the transmission system model of the wheel side reducer is built, and the theory of gear tooth surface loaded contact analysis is introduced. The model of wheel side reducer is simulated and analyzed by Romax Designer software. The analysis results show that the biasing load phenomenon of the transmission system is the same as that in practical use. In order to solve this kind of problem, we need to modify the gear profile in the gear side reducer. (3) this paper introduces the gear profile modification correlation principle and the determination scheme of gear profile modification parameter, and develops the Mini Programs of gear profile modification related parameter calculation in MATLAB software. The initial data of gear modification are obtained by program calculation. Through the simulation analysis of the model, it is proved that the calculated gear modification initial quantity is reasonable, and the gear modification simulation with different modification curves is carried out. By comparing and analyzing the simulation results, the profile modification curve of the gear with the wheel side reducer is determined. By comparing the results of contact analysis, it is shown that gear profile modification can reduce the transmission error caused by gear meshing. The dynamic analysis and comparison of gears before and after modification are carried out by dynamic analysis software ADAMS. The results show that tooth profile modification improves the smoothness of gear transmission. (4) the principle of tooth profile modification and the determination scheme of tooth profile modification parameters are introduced. Through the simulation analysis of the gear side reducer, the relative gear shaft deformation provides the initial conditions for the calculation of gear tooth modification parameters in the wheel edge reducer, and through the analysis of the distribution of tooth load per unit length under different modification quantities, The optimal gear tooth modification parameters are obtained. The contact analysis of gear in the front and rear wheel side reducer shows that the gear tooth profile modification can improve the load distribution of tooth surface.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD50

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