基于AutoCAD汽車驅(qū)動橋結(jié)構(gòu)設(shè)計【含5張CAD圖紙】
基于AutoCAD汽車驅(qū)動橋結(jié)構(gòu)設(shè)計【含5張CAD圖紙】,含5張CAD圖紙,基于,AutoCAD,汽車,驅(qū)動,結(jié)構(gòu)設(shè)計,CAD,圖紙
本科畢業(yè)設(shè)計外文資料翻譯
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汽車驅(qū)動橋結(jié)構(gòu)設(shè)計
驅(qū)動橋設(shè)計隨著汽車對安全、節(jié)能、環(huán)保的不斷重視，汽車后橋作為整車的一個關(guān)鍵部 件，其產(chǎn)品的質(zhì)量對整車的安全使用及整車性能的影響是非常大的，因而對汽車 后橋進行有效的優(yōu)化設(shè)計計算是非常必要的。 驅(qū)動橋處于動力傳動系的末端， 其基本功能是增大由傳動軸或變速器傳來的轉(zhuǎn)矩, 并將動力合理地分配給左、右驅(qū)動輪，另外還承受作用于路面和車架或車身之間 的垂直力力和橫向力。驅(qū)動橋一般由主減速器、差速器、車輪傳動裝置和驅(qū)動橋 殼等組成。
驅(qū)動橋作為汽車四大總成之一，它的性能的好壞直接影響整車性能，而對于 載重汽車顯得尤為重要。驅(qū)動橋設(shè)計應(yīng)當滿足如下基本要求：
1、符合現(xiàn)代汽車設(shè)計的一般理論。
2、外形尺寸要小，保證有必要的離地間隙。
3、合適的主減速比，以保證汽車的動力性和燃料經(jīng)濟性。
4、在各種轉(zhuǎn)速和載荷下具有高的傳動效率。
5、在保證足夠的強度、剛度條件下，力求質(zhì)量小，結(jié)構(gòu)簡單，加工工藝性 好，制造容易，拆裝，調(diào)整方便。
6、與懸架導(dǎo)向機構(gòu)運動協(xié)調(diào)，對于轉(zhuǎn)向驅(qū)動橋，還應(yīng)與轉(zhuǎn)向機構(gòu)運動協(xié)調(diào)。
研究現(xiàn)狀
為適應(yīng)不斷完善社會主義市場經(jīng)濟體制的要求以及加入世貿(mào)組織后國內(nèi)外汽車產(chǎn)業(yè)發(fā)展的新形勢，推進汽車產(chǎn)業(yè)結(jié)構(gòu)調(diào)整和升級，全面提高汽車產(chǎn)業(yè)國際競爭力，滿足消費者對汽車產(chǎn)品日益增長的需求，促進汽車產(chǎn)業(yè)健康發(fā)展，特制定汽車產(chǎn)業(yè)發(fā)展政策。通過該政策的實施，使我國汽車產(chǎn)業(yè)在2010年前發(fā)展成為國民經(jīng)濟的支柱產(chǎn)業(yè)，為實現(xiàn)全面建設(shè)小康社會的目標做出更大的貢獻。政府職能部門依據(jù)行政法規(guī)和技術(shù)規(guī)范的強制性要求，對汽車、農(nóng)用運輸車(低速載貨車及三輪汽車，下同)、摩托車和零部件生產(chǎn)企業(yè)及其產(chǎn)品實施管理，規(guī)范各類經(jīng)濟主體在汽車產(chǎn)業(yè)領(lǐng)域的市場行為。低速載貨汽車，在汽車發(fā)展趨勢中，有著很好的發(fā)展前途。生產(chǎn)出質(zhì)量好，操作簡便，價格便宜的低速載貨汽車將適合大多數(shù)消費者的要求。在國家積極投入和支持發(fā)展汽車產(chǎn)業(yè)的同時，能研制出適合中國國情，包括道路條件和經(jīng)濟條件的車輛，將大大推動汽車產(chǎn)業(yè)的發(fā)展和社會經(jīng)濟的提高
在新政策《汽車產(chǎn)業(yè)發(fā)展政策》中，在2010年前，我國就要成為世界主要汽車制造國，汽車產(chǎn)品滿足國內(nèi)市場大部分需求并批量進入國際市場；2010年，汽車生產(chǎn)企業(yè)要形成若干馳名的汽車、摩托車和零部件產(chǎn)品品牌；通過市場競爭形成幾家具有國際競爭力的大型汽車企業(yè)集團，力爭到2010年跨入世界500強企業(yè)之列，等等。同時，在這個新的汽車產(chǎn)業(yè)政策描繪的藍圖中，還包含許多涉及產(chǎn)業(yè)素質(zhì)提高和市場環(huán)境改善的綜合目標，著實令人鼓舞。然而，不可否認的是，國內(nèi)汽車產(chǎn)業(yè)的現(xiàn)狀離產(chǎn)業(yè)政策的目標還有相當?shù)木嚯x。自1994年《汽車工業(yè)產(chǎn)業(yè)政策》頒布并執(zhí)行以來，國內(nèi)汽車產(chǎn)業(yè)結(jié)構(gòu)有了顯著變化，企業(yè)規(guī)模效益有了明顯改善，產(chǎn)業(yè)集中度有了一定程度提高。但是，長期以來困擾中國汽車產(chǎn)業(yè)發(fā)展的散、亂和低水平重復(fù)建設(shè)問題，還沒有從根本上得到解決。多數(shù)企業(yè)家預(yù)計，在新的汽車產(chǎn)業(yè)政策的鼓勵下，將會有越來越多的汽車生產(chǎn)企業(yè)按照市場規(guī)律組成企業(yè)聯(lián)盟，實現(xiàn)優(yōu)勢互補和資源共享
主減速器
汽車主減速器作為汽車驅(qū)動橋中重要的傳力部件，是汽車最關(guān)鍵的部件之一。它承 擔(dān)著在汽車傳動系中減小轉(zhuǎn)速、增大扭矩的作用，同時在動力向左右驅(qū)動輪分流的差速 器之前設(shè)置一個主減速器，可以使主減速器前面的傳動部件，如變速箱、分動器、萬向 傳動裝置等傳遞的扭矩減小，同時也減小了變速箱的尺寸和質(zhì)量，而且操控靈敏省力。 汽車主減速器結(jié)構(gòu)多種多樣，主要是根據(jù)其齒輪類型、主動齒輪和從動齒輪的安置方法 以及減速型式的不同而異。按照主減速器齒輪的類型分為：螺旋錐齒輪和雙曲面齒輪； 按照主減速器主動錐齒輪的支承型式及安置方法分為：懸臂式和跨置式；按照主減速器 減速形式分為：單級減速、雙級減速、雙速減速、貫通式主減速器和輪邊減速等。 主減速器設(shè)計的好壞關(guān)系到汽車的動力性、經(jīng)濟性以及噪聲、壽命等諸多方面。如 何協(xié)調(diào)好各方關(guān)系、合理匹配設(shè)計參數(shù)，以達到滿足使用要求的最優(yōu)目標，是主減速器 設(shè)計中最重要的問題。通常主減速器優(yōu)化設(shè)計多是僅從某一角度考慮，單一的改善其某 一方面參數(shù)，而沒有將其參數(shù)優(yōu)化有效結(jié)合起來，因此，本文是通過設(shè)計不同類型的主 減速器，進行分析比較，看看各種類型的主減速器都適應(yīng)何種汽車，或者是說每種類型 的主減速器采用什么樣的構(gòu)件合適，以便能優(yōu)化設(shè)計主減速器，使其能夠適應(yīng)現(xiàn)在汽車 的發(fā)展趨勢，向著小速比、大扭矩、傳動效率高、成本低等客車和貨車主減速器技術(shù)的 發(fā)展趨勢發(fā)展
差速器
差速器是拖拉機必不可少的總成。在拖拉機行駛過程中，由于輪胎氣壓，道路狀況，輪胎磨損的不同和拖拉機轉(zhuǎn)彎，在很多情況下內(nèi)側(cè)輪胎的行駛速度比外側(cè)的慢。差速器不僅可以解決上述問題，而且對于提高拖拉機的轉(zhuǎn)向性和操縱穩(wěn)定性有重要的作用。在總結(jié)相關(guān)資料的基礎(chǔ)上,對差速器的原理和分類情況作了分析,通過分析和比較各種差速器的優(yōu)缺點,最終選擇了圓錐齒輪差速器作為拖拉機的差速器。本文依據(jù)40馬力拖拉機的參數(shù)設(shè)計差速器，根據(jù)現(xiàn)有的條件和實際情況,進行了參數(shù)計算，且選取圓錐齒輪差速器的一對錐齒輪進行了強度校核。
外文原文
Cars drive axle of structure design
As the vehicle driving axle design of safety, energy saving and environmental protection of continuous attention, car driving axle as a key part of the whole vehicle parts, the quality of its products to the safe use of the whole vehicle and vehicle performance's influence is very large, so for automobile driving axle for effective optimized design calculation is very necessary. In power transmission drive axle of the end of its basic function is to enlarge the drive shaft or transmission by coming from torque, and will be a reasonable distribution of power to the right and left the drive wheels, and also take effect on the pavement and frame or body of vertical forces between force and transverse force. From the main reducer drive axle of general, differential transmission device and axles and wheels shell etc.
As the car drive axle of one of the four assembly, it will have a direct impact on the performance of vehicle performance, and for heavy trucks is particularly important. Driving axle design shall meet the following basic requirements:
1, accord with the general theory of modern car design.
2, shape dimension to small, ensure that necessary ground clearance is achieved.
3, the right than the slowdown, in order to ensure that the dynamic performance and fuel economy of the car.
4, in all kinds of speed and load of high transmission efficiency.
5, in enough strength, stiffness conditions, and strive to quality small, simple structure, good processing technology, manufacturing easy, tear open outfit, easy to adjust.
6, and suspension steering mechanism motor coordination, to turn to drive axle, still should and steering mechanism motion coordination.
Research status
To adapt to the constantly improve the socialist market economic system and the requirement of the wto car industry at home and abroad and the development of new situation, promote the adjustment and upgrading of the structure of the auto industry, and to enhance the international competitiveness of the automotive industry, consumer demand for the growing needs of automobile products, and promote the healthy development of the auto industry, specially make auto industry development policy. Through the implementation of the policy, China's automotive industry development in 2010 years ago as pillar industry of the national economy, to achieve the comprehensive construction affluent society's goal to make more contribution. The functions of the government sector basis administrative rules and regulations and technical specifications of the mandatory requirements of car, farm transporter (low speed truck and three rounds of automobile, similarly hereinafter), motorcycle and spare parts manufacturing enterprise and its product implementation management and standardize the all kinds of economic subject in the car industry field market behavior. Low speed parts of automobile, in car development trend, with a very good development prospect. Produce quality good, simple operation, low price cheap parts of the cars will be suitable for most consumers' demand. In active in the country and support the development of the auto industry, but also can develop suitable for China's national conditions, including road conditions and economic condition of the vehicle, will greatly promote the development of the auto industry and the improvement of social economy
The new policy in the automotive industry development policy, \"2010 years ago, our country will become the world's major automobile manufacturing countries, automobile products meet the domestic market demand and most batch enter the international market; In 2010, car production enterprise to form a number of well-known automobile, motorcycle and parts product brand; Through the market competition form several international competitive large automobile enterprise group, strive to 2010 years into the list of the world's top 500 enterprises, and so on. Meanwhile, in this new auto industry policy described the blueprint, also contains many involving industry quality improvement and market environment to improve the comprehensive goal, really encouraging. However, it is undeniable that the, the present situation of the domestic car industry from industrial policy goals there are quite a distance. Since 1994 the automotive industry policy \"promulgated since and carry out, the domestic auto industry structure has significantly changed, enterprise scale benefit has been a marked improvement, industrial concentration has a certain degree increase. However, for a long time with the development of China's automobile industry scattered, random and low repetitive construction problems, have not fundamentally solved. Most entrepreneurs expect a new auto industry policy's encouragement, there will be more and more car production enterprise in accordance with the rules of market enterprise alliance, realize the complementary advantages and resource sharing
The Lord reducer
Abstract The final drive as that part of a power transmission system of the drive bridge is one of the key components of the car. Its function is decreasing speed and increasing torque in the power train.At the same time. Designing a final drive before the differential which drive the power to two drive wheel may make drive train components before final drive ,such as transmission, power divider and universal driven device and so on,decrease the torque they transmit, but also reduced the size and quality of transmission , and control quickly and easily. The structure of final drive is various and is based mainly on the gear type, the settle mothod of bevel pinion gear and drive gear vary according to. According to the type of final drive wheel: spiral bevel gear and hypoid gear; According to the supporting form and settle mothod of bevel pinion gear: cantilever type and supports on both ends of the gear. According to the down form of final drive: single reduction final drive, double reduction final drive, two speed final drive, penetrable final drive and hub reduction gear and so on. The final drive design in relation to the dynamic quality ,economy and noise, life and so on. How to appropriately, the relationship between matches the design parameters to meet the needs of the best aim is the final drive in the design of the most important problem. Usually optimum design of the final drive is only from a perspective, a single improve its some one parameter, and not to put their argument to optimize effectiveness , Therefore, this text is designed by different types of the final drive, an analysis and comparison to see all kinds of gear have to adapt to any kind of car, or is that each type of the final drive what kind of members to adopt appropriate to optimize designs the final drive which can accommodate now the trend towards smaller than the speed of transmission, torque and high efficiency, low cost etc coach and freight the main gear technology the trend of development
differential
Differential is an essential assembly of vehicle. Due to difference in pressure of tires, road conditions, wear of tires and turning etc, inner wheels rotate slower than outer wheels in many situations. And differential can not only deal with the problem above, but also play an important role in enhancing motor vehicle’s steering performance and operating stability .
At the conclusion of the relevant information based on the principle of differential analysis and classification. by analyzing and comparing the advantages and disadvantages of a variety of differential, finally selected bevel gear differential as the tractor differential . In this paper, 40-horsepower tractor in accordance with the design of differential parameters, under the existing conditions and the actual situation, execute a parameter calculation, bevel gear differential and select a pair of bevel gears were strength checking-
In does not need to drive, the 3-way valve (pos high pressure fluid to drive will convey mechanism of hydraulic motor.
Also can use three-way valve to control the single function type hydraulic cylinder (only unilateral force) movement. For example, when the three-way valve, it can prevent high pressure fluid flow into the hydraulic cylinder. At the same time, the valve can put the hydraulic cylinder of liquid guide hydraulic oil tank, therefore, piston cylinder in gravity or return can under the action of spring back to its original position.
There are four four-way valve oil mouths. Pressure oil control fluid connected to the mouth to high pressure place. At the same time there is a mouth from high oil discharge the oil. The expulsion of liquid flows back to the hydraulic oil tank.
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