【摘要】：減少傳動系統(tǒng)的體積及重量對提高能量利用率，改善操控性能都很重要。本文在設(shè)計直齒圓柱齒輪差速器時，提出了一種新的結(jié)構(gòu)方案，與傳統(tǒng)的斜齒輪圓柱齒輪差速器相比，該新型結(jié)構(gòu)的變速器可以壓縮差速器軸向尺寸，減少差速器的空間尺寸，實現(xiàn)小體積和輕量化的設(shè)計目標(biāo)。本文所做主要工作為： 用直齒圓柱齒輪構(gòu)成的WW行星機構(gòu)作為基本機構(gòu)，通過齒輪變位的方法使差速器左右兩邊部分具有不同的傳動類型以實現(xiàn)壓縮軸向尺寸的目標(biāo)；文中提出了設(shè)計新結(jié)構(gòu)直齒圓柱齒輪差速器時應(yīng)滿足的幾個設(shè)計條件，其中軸向裝配條件與轉(zhuǎn)矩均分條件為本文首次提出，從而解決了設(shè)計行星傳動機構(gòu)時選擇各齒輪副的變位系數(shù)必須滿足的設(shè)計條件。 文中進行了所設(shè)計的差速器在直線行駛與轉(zhuǎn)彎行駛時的運動特性分析、轉(zhuǎn)矩特性分析和傳動效率分析，推導(dǎo)出了相應(yīng)的計算公式。為進一步優(yōu)化這種新型變速器的設(shè)計奠定了基礎(chǔ)。 文中根據(jù)特定的設(shè)計參數(shù)，設(shè)計了一款新型結(jié)構(gòu)的差速器，并應(yīng)用PRO/E建立了三維實體模型，應(yīng)用ADAMS進行了差速器的運動特性和轉(zhuǎn)矩特性分析，表明所設(shè)計的差速器工作原理合理，所給出的分析公式正確。 由于新型差速器設(shè)計時需要進行計算量大、方法復(fù)雜的變位系數(shù)選擇計算、強度計算等設(shè)計或校核計算，本文運用VB編制了一個變位直齒輪設(shè)計的CAD程序，，把大量的公式、圖表程序化，為差速器的設(shè)計計算奠定了基礎(chǔ)。 本文所設(shè)計的新型差速器可用于對空間及輕量化有較高要求的車輛如轎車、輕型電動車中；本文所進行的相關(guān)分析可在設(shè)計此類差速器時參考使用。
[Abstract]:Reducing the volume and weight of transmission system is very important to improve energy utilization and control performance. In this paper, a new structure scheme is proposed in the design of spur gear differential. Compared with the traditional helical gear differential, the transmission with this new structure can compress the axial size of the differential and reduce the space size of the differential. Achieve small volume and lightweight design goals. The main work of this paper is as follows: the WW planet mechanism composed of spur gear is used as the basic mechanism, and the left and right sides of the differential have different transmission types by means of gear displacement in order to realize the goal of compression axial size. In this paper, several design conditions for the design of a new structure spur gear differential are put forward, in which the axial assembly condition and the torque sharing condition are put forward for the first time in this paper. Thus, the design conditions that must be satisfied when selecting the displacement coefficient of each gear pair in the design of planet transmission mechanism are solved. In this paper, the motion characteristics, torque characteristics and transmission efficiency of the designed differential in straight line and turn are analyzed, and the corresponding calculation formulas are derived. It lays a foundation for further optimizing the design of this new transmission. In this paper, according to the specific design parameters, a new type of differential structure is designed, and the three-dimensional solid model is established by PRO/E, and the motion and torque characteristics of the differential are analyzed by ADAMS. It is shown that the working principle of the designed differential is reasonable and the analysis formula is correct. Because the design of the new differential requires a large amount of calculation, complex method of displacement coefficient selection calculation, strength calculation and other design or check calculation, this paper uses VB to compile a CAD program for the design of the displacement spur gear, and puts a large number of formulas. The chart is programmed, which lays a foundation for the design and calculation of differential. The new differential designed in this paper can be used in vehicles with high requirements for space and lightweight, such as cars and light electric vehicles, and the correlation analysis in this paper can be used as a reference in the design of this kind of differential.
【學(xué)位授予單位】：遼寧工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TH132.41

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