本文選題：輪邊減速器 + 嚙合剛度��； 參考：《湘潭大學》2017年碩士論文

【摘要】：隨著工程機械的發(fā)展,其對齒輪傳動的要求正向著高速重載的方向前行,對齒輪傳動性能與可靠性等提出了更高的要求。為了在不改變齒輪的幾何尺寸和提高齒輪生產成本的前提條件下對齒輪進行適合的齒廓修形和齒向修形是保證重載齒輪的傳動性能和使用壽命重要的方法。本文將以154T礦用自卸車輪邊減速器為研究對象,通過分析輪邊減速器在額定載荷下的齒輪軸與齒輪輪體的變形、齒輪嚙合時的傳動誤差、齒向載荷分布情況,按照齒輪修形原理提出了齒輪齒廓和齒輪齒向修形的方案。主要研究內容如下:1)敘述了齒輪接觸分析理論與前人研究得到的齒輪輪齒變形計算公式,在考慮了齒輪軸彈性變形與齒輪輪體變形對輪齒變形的影響下用石川公式求得齒輪的綜合變形量,然后再根據對剛度定義求出齒輪嚙合剛度,為154T礦用自卸車輪邊減速器中的齒輪修形參數計算提供理論基礎。2)運用機械傳動系統Romax Designer軟件建好輪邊減速器傳動系統模型,介紹了齒輪齒面受載接觸分析理論,并利用Romax Designer軟件對建好的輪邊減速器模型進行仿真分析。分析結果表明該傳動系統存在偏載現象與現實使用中出現的情況一樣,為了解決這類問題需要對輪邊減速器中的齒輪進行修形。3)介紹了齒輪齒廓修形相關原理和齒輪齒廓修形參數的確定方案,在MATLAB軟件中開發(fā)了齒輪修形相關參數計算的小程序。通過程序計算得到了齒輪修形的初始數據,通過對模型的仿真分析,證明了計算出來的齒輪修形初始量是合理的,對選擇不同的修形曲線進行修形的齒輪仿真,通過仿真結果對比分析確定了符合輪邊減速器齒輪的修形曲線。通過對接觸分析結果對比,說明齒輪齒廓修形可以減小齒輪在嚙合時產生的傳動誤差,通過動力學分析軟件ADAMS對修形前后的齒輪進行動力學分析比較,對比結果表明齒廓修形提高了齒輪傳動的平穩(wěn)性。4)介紹了齒向修形原理和齒向修形相關參數的確定方案。通過對輪邊減速器仿真分析,得到相關齒輪軸變形為輪邊減速器中齒輪齒向修形參數的計算提供了初始條件;通過分析不同修形量下的齒向單位長度載荷分布情況,獲得最優(yōu)的齒輪齒向修形參數。對修形前后輪邊減速器中齒輪進行接觸分析對比,對比結果說明齒輪齒向修形可以改善齒面的載荷分布。
[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.
【學位授予單位】：湘潭大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD50

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