發(fā)布時間：2018-02-21 23:37

  本文關(guān)鍵詞： 多級行星傳動 構(gòu)型分析 傳動效率 輪邊減速器　出處：《湘潭大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：多級行星齒輪傳動作為經(jīng)典的機械傳動形式，應(yīng)用在眾多工業(yè)領(lǐng)域�，F(xiàn)代機械裝備對多級行星傳動機構(gòu)提出了更高的要求，高效率的傳動類型、多樣化的傳動裝置成為追求的目標(biāo)。構(gòu)型分析是機構(gòu)創(chuàng)新設(shè)計的重要手段，本文將圖論-鄰接矩陣法應(yīng)用于多級行星齒輪傳動機構(gòu)的構(gòu)型分析，以NGW型兩級行星齒輪機構(gòu)為研究對象，總共得到了60種機構(gòu)構(gòu)型。根據(jù)手冊對效率與傳動比關(guān)系的定義完善了行星齒輪傳動系統(tǒng)效率計算的方法，重點分析了傳動機構(gòu)、輸入輸出構(gòu)件、傳動比以及傳動比分配對傳動效率的影響，并繪制出了各種情況下的傳動比與效率的關(guān)系曲線圖，，可指導(dǎo)于工程中多級行星傳動系統(tǒng)的設(shè)計。最后，本文以22噸液壓挖掘機輪邊減速器為設(shè)計實例，驗證本課題研究的意義。本文主要工作如下： 結(jié)合了基本的圖論法與鄰接矩陣法，將多級行星齒輪傳動機構(gòu)轉(zhuǎn)化為數(shù)學(xué)表達(dá)形式，并且有效地對運動鏈進(jìn)行了同構(gòu)判斷。以NGW型兩級行星齒輪傳動機構(gòu)為研究對象，分析了其構(gòu)型綜合。列舉了所有構(gòu)型結(jié)果，其中包含了24種串聯(lián)型兩級行星齒輪機構(gòu)和36種封閉差動式兩級行星齒輪機構(gòu)。通過該方法推導(dǎo)可以得到完整的NGW型行星齒輪傳動機構(gòu)的各種構(gòu)型，可為多級行星齒輪傳動創(chuàng)新設(shè)計提供新的方法。 整理和總結(jié)了可以應(yīng)用于所得到的串聯(lián)型行星齒輪傳動機構(gòu)的傳動效率計算的嚙合功率法。完善兩級差動封閉式行星輪系的效率計算方法，具體計算了相同傳動比條件下，所有差動封閉行星機構(gòu)的傳動效率大小，優(yōu)選出傳動效率高且結(jié)構(gòu)緊湊的行星傳動構(gòu)型。分析了輸入、輸出構(gòu)件和傳動比對傳動效率的影響，發(fā)現(xiàn)在合適的傳動比區(qū)間內(nèi)，輸入輸出機構(gòu)對于傳動效率的影響更大。最后重點探討了行星機構(gòu)各級間的傳動比分配對傳動效率的影響，總結(jié)出多級行星齒輪傳動機構(gòu)傳動比分配方法——“高速級應(yīng)略大于低速級”。給出了各類型傳動機構(gòu)傳動比分配與效率的關(guān)系曲線圖，作為設(shè)計該種行星輪系時分配傳動比的參考。 將上述分析應(yīng)用于液壓挖機輪邊減速器設(shè)計，該減速器采用NGW型兩級差動封閉行星傳動機構(gòu)，通過分析現(xiàn)有產(chǎn)品效率，傳動比重新分配以獲得更高的傳動效率。通過機構(gòu)動力學(xué)仿真，計算了輪邊減速器的效率，證明多級行星傳動機構(gòu)構(gòu)型分析和效率計算的設(shè)計方法在工程實際應(yīng)用中是實用的。
[Abstract]:As a classical mechanical transmission, multistage planetary gear transmission is applied in many industrial fields. Configuration analysis is an important means of mechanism innovation design. In this paper, graph theory-adjacency matrix method is applied to the configuration analysis of multistage planetary gear transmission mechanism. Taking the NGW type two-stage planetary gear mechanism as the research object, 60 kinds of mechanism configurations are obtained. According to the definition of the relationship between efficiency and transmission ratio in the manual, the method of calculating the efficiency of planetary gear transmission system is improved, and the transmission mechanism is emphatically analyzed. The effects of input and output components, transmission ratio and transmission ratio distribution on transmission efficiency are also drawn. The curves of the relationship between transmission ratio and efficiency are drawn, which can be used to guide the design of multi-stage planetary transmission system in engineering. This paper takes the wheel side reducer of 22 ton hydraulic excavator as an example to verify the significance of the research. The main work of this paper is as follows:. Combining the basic graph theory method with the adjacency matrix method, the multistage planetary gear transmission mechanism is transformed into the mathematical expression form, and the kinematic chain is effectively judged. Taking the NGW type two-stage planetary gear transmission mechanism as the research object, The configuration synthesis is analyzed. All the configuration results are listed. There are 24 kinds of series type two stage planetary gear mechanism and 36 kinds of closed differential two stage planetary gear mechanism. By this method, we can get the complete configuration of NGW type planetary gear transmission mechanism. It can provide a new method for the innovative design of multistage planetary gear transmission. The meshing power method, which can be used to calculate the transmission efficiency of the series planetary gear transmission mechanism, is arranged and summarized. The efficiency calculation method of the two-stage differential closed planetary gear train is improved, and the calculation of the efficiency of the two stage differential closed planetary gear train is concretely calculated under the condition of the same transmission ratio. The transmission efficiency of all differential closed planetary mechanism is large, and the planetary transmission configuration with high transmission efficiency and compact structure is selected. The effects of input, output components and transmission ratio on transmission efficiency are analyzed, and it is found that the transmission efficiency is in the appropriate transmission ratio range. The input-output mechanism has a greater influence on the transmission efficiency. Finally, the effect of the transmission ratio distribution among the planetary mechanisms on the transmission efficiency is discussed. This paper summarizes the distribution method of transmission ratio of multistage planetary gear transmission mechanism-"the high speed level should be slightly larger than the low speed level". The curve diagram of the relation between transmission ratio distribution and efficiency of each type of transmission mechanism is given, which can be used as a reference in the design of the planetary gear train. The above analysis is applied to the design of hydraulic excavating wheel side reducer. The reducer adopts NGW type two-stage differential closed planetary transmission mechanism. By analyzing the existing product efficiency, The efficiency of gear side reducer is calculated by dynamic simulation of mechanism, which proves that the design method of configuration analysis and efficiency calculation of multistage planetary transmission mechanism is practical in engineering practice.
【學(xué)位授予單位】：湘潭大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TH132.46

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