本文選題：輪邊減速器 + 優(yōu)化設計��； 參考：《湖南科技大學》2011年碩士論文

【摘要】：隨著我國煤炭、鐵礦石等礦產(chǎn)資源開采行業(yè)的高速發(fā)展,我國對先進礦山開采運輸設備的需求也越來越大,礦用電動輪自卸車就是其中的代表性產(chǎn)品。輪邊減速器作為礦用電動輪自卸車的核心部件,要求其結(jié)構(gòu)緊湊、重量輕、運行平穩(wěn),因此對輪邊減速器齒輪傳動系統(tǒng)參數(shù)進行優(yōu)化設計并改善其力學特性,對于提高礦用電動輪自卸車的運行性能具有重要意義。 該文以某公司礦用電動輪自卸車輪邊減速器為研究對象,從齒輪傳動參數(shù)優(yōu)化設計建模、優(yōu)化模型求解方法、輪齒動態(tài)載荷分析、齒頂修形參數(shù)優(yōu)化四個方面對輪邊減速器進行了理論分析與數(shù)值仿真。主要研究工作如下: (1)輪邊減速器齒輪傳動參數(shù)優(yōu)化建模。根據(jù)輪邊減速器的設計要求和實際加工條件,建立以模數(shù)、齒數(shù)、變位系數(shù)、工作齒寬為設計變量,以配齒約束、基本設計變量約束、傳動性能約束、齒輪強度約束、齒頂厚度及其它約束為設計約束條件,以齒輪傳動系統(tǒng)總質(zhì)量最小為設計目標的單目標優(yōu)化設計數(shù)學模型。 (2)優(yōu)化模型求解方法及輪邊減速器優(yōu)化設計。針對輪邊減速器優(yōu)化設計模型中離散變量與連續(xù)變量共同存在的特點,提出可行枚舉法與遺傳算法相結(jié)合的求解方法。通過運用MATLAB編程計算得到相應的優(yōu)化參數(shù)值和目標函數(shù)值,獲得輪邊減速器齒輪傳動參數(shù)的優(yōu)化設計方案。 (3)齒輪多體動力學仿真及其輪齒動載系數(shù)分析。基于多體動力學仿真軟件ADAMS,建立輪邊減速器齒輪傳動系統(tǒng)中心輪和大星輪嚙合輪齒動態(tài)載荷仿真模型。通過仿真獲得了輪齒的動態(tài)載荷時間歷程及其動載系數(shù),與理論分析基本吻合,為齒輪齒頂修形提供了理論分析基礎。 (4)齒輪齒頂修形參數(shù)優(yōu)化。運用試驗設計方法,建立齒輪齒頂修形量與動載系數(shù)之間的二階響應面模型。以動載系數(shù)最小為優(yōu)化目標,獲得最優(yōu)齒頂修形量。與未修形時相比,改善了齒輪傳動的輪齒動態(tài)載荷特性。 該文通過建立輪邊減速器齒輪傳動參數(shù)優(yōu)化模型,對輪邊減速器進行了優(yōu)化設計;通過齒輪多體動力學仿真和齒輪齒頂修形量優(yōu)化設計,改善了輪邊減速器輪齒動態(tài)載荷特性。為輪邊減速器齒輪傳動系統(tǒng)參數(shù)優(yōu)化和齒頂修形量優(yōu)化提供了理論依據(jù)和實踐參考。
[Abstract]:With the rapid development of mining industry of coal, iron ore and other mineral resources in China, the demand for advanced mining and transportation equipment in China is increasing, and the electric wheel dump truck is one of the representative products. The wheel side reducer, as the core component of the mine electric wheel dump truck, requires its compact structure, light weight and smooth operation. Therefore, the parameters of the gear transmission system of the wheel side reducer are optimized and its mechanical properties are improved. It is of great significance to improve the performance of mine electric wheel dump truck. This paper takes the wheel side reducer of a mine electric wheel dump truck as the research object, modeling the gear transmission parameter optimization design, solving the optimization model, and analyzing the dynamic load of the gear tooth. Theoretical analysis and numerical simulation of gear side reducer are carried out in four aspects of tooth top modification parameter optimization. The main work of the study is as follows: Model optimization of gear transmission parameters of wheel side reducer. According to the design requirements of the wheel side reducer and the actual processing conditions, the design variables such as modulus, tooth number, modification coefficient and working tooth width are established, and the gear matching constraints, basic design variables constraints, transmission performance constraints, gear strength constraints are established. The tooth top thickness and other constraints are the design constraints, and the mathematical model of single objective optimization design takes the minimum total mass of the gear transmission system as the design objective. 2) the method of solving the optimization model and the optimal design of the wheel side reducer. In view of the co-existence of discrete and continuous variables in the optimal design model of wheel reducer, a feasible enumeration method combined with genetic algorithm is proposed. The optimal design scheme of gear transmission parameters of wheel reducer is obtained by using MATLAB programming to calculate the corresponding optimization parameters and objective function values. Simulation of gear multi-body dynamics and analysis of gear tooth dynamic load coefficient. Based on the multi-body dynamics simulation software Adams, the dynamic load simulation model of the meshing gear teeth of the center wheel and the large star wheel in the gear drive system of the wheel side reducer is established. The dynamic load time history and the dynamic load coefficient of the gear teeth are obtained by simulation, which are in good agreement with the theoretical analysis, and provide the theoretical analysis basis for the gear tooth top modification. Gear top modification parameter optimization. The second order response surface model between gear top modification and dynamic load coefficient is established by means of experimental design method. With the minimum dynamic load coefficient as the optimization objective, the optimal tooth top modification is obtained. Compared with the unmodified shape, the dynamic load characteristics of gear drive are improved. In this paper, the optimal design of the gear reducer is carried out by establishing the gear transmission parameter optimization model of the gear side reducer, and the dynamic load characteristics of the gear tooth is improved by means of the multi-body dynamics simulation of the gear and the optimum design of the gear top profile modification. The theoretical basis and practical reference are provided for the optimization of gear transmission system parameters and tooth top profile modification of wheel reducer.
【學位授予單位】：湖南科技大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH132.41

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