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畢業(yè)設(shè)計(jì)（論文）開題報(bào)告 （學(xué)生填表） 院系：車動(dòng)學(xué)院 課題名稱 3噸柴油動(dòng)力貨車設(shè)計(jì)（變速器及操縱機(jī)構(gòu)設(shè)計(jì)） 學(xué)生姓名 專業(yè)班級(jí) 課題類型 指導(dǎo)教師 職稱 課題來源 1. 設(shè)計(jì)（或研究）的依據(jù)與意義 變速箱由變速傳動(dòng)機(jī)構(gòu)和變速操縱機(jī)構(gòu)兩部分組成。變速傳動(dòng)機(jī)構(gòu)的主要作用是改變轉(zhuǎn)矩和轉(zhuǎn)速的數(shù)值和方向；操縱機(jī)構(gòu)的主要作用是控制傳動(dòng)機(jī)構(gòu)，實(shí)現(xiàn)變速器傳動(dòng)比的變換，即實(shí)現(xiàn)換檔，以達(dá)到變速變矩。 機(jī)械式變速箱主要應(yīng)用了齒輪傳動(dòng)的降速原理。簡(jiǎn)單的說，變速箱內(nèi)有多組傳動(dòng)比不同的齒輪副，而汽車行駛時(shí)的換檔行為，也就是通過操縱機(jī)構(gòu)使變速箱內(nèi)不同的齒輪副工作。如在低速時(shí)，讓傳動(dòng)比大的齒輪副工作，而在高速時(shí)，讓傳動(dòng)比小的齒輪副工作。 由于汽車行駛條件不同，要求汽車行駛速度和驅(qū)動(dòng)扭矩能在很大范圍內(nèi)變化。例如在高速路上車速應(yīng)能達(dá)到100km/h，而在市區(qū)內(nèi)，車速常在50km/h左右?？哲囋谄街钡墓飞闲旭倳r(shí)，行駛阻力很小，則當(dāng)滿載上坡時(shí)，行駛阻力便很大。而汽車發(fā)動(dòng)機(jī)的特性是轉(zhuǎn)速變化范圍較小，而轉(zhuǎn)矩變化范圍更不能滿足實(shí)際路況需要。 2. 國(guó)內(nèi)外同類設(shè)計(jì)（或同類研究）的概況綜述 1980－2001年，我國(guó)汽車消費(fèi)量年均增長(zhǎng)高達(dá)18﹪，特別是進(jìn)入九十年代以后，國(guó)內(nèi)汽車產(chǎn)量以l－2年遞增10萬輛的速度高速增長(zhǎng)，目前在汽車市場(chǎng)的比重己超過30﹪，成為我國(guó)汽車需求增長(zhǎng)的重要拉動(dòng)力量。大力發(fā)展公共交通，“鼓勵(lì)汽車進(jìn)入家庭”己經(jīng)被黨中央寫入“十五計(jì)劃”。國(guó)家經(jīng)貿(mào)委提出，“十五”期末我國(guó)汽車產(chǎn)量要達(dá)320萬輛左右，力爭(zhēng)到2010年使之成為國(guó)民經(jīng)濟(jì)的支柱產(chǎn)業(yè)。規(guī)劃預(yù)計(jì)到2005年，轎車產(chǎn)量為 110萬輛左右；汽車工業(yè)增加值為 1300億元，占國(guó)內(nèi)生產(chǎn)總值 1﹪左右，汽車產(chǎn)品基本滿足國(guó)內(nèi)市場(chǎng)需求。 隨著我國(guó)加入世界貿(mào)易組織，通用、福特、日產(chǎn)、豐田……一批世界一流汽車生產(chǎn)企業(yè)紛紛進(jìn)入中國(guó)，市場(chǎng)競(jìng)爭(zhēng)日趨激烈.入世后，技術(shù)競(jìng)爭(zhēng)將是我國(guó)汽車工業(yè)面臨的最大挑戰(zhàn)。 隨著國(guó)民經(jīng)濟(jì)的蓬勃發(fā)展，汽車己成為人們?nèi)粘Ｉ钪兄匾慕煌ㄟ\(yùn)輸工具。人民生活水平的不斷提高，則更對(duì)車輛的舒適性能提出高要求, 不僅如此,隨著世界石油的越來越緊張,全球資源的減少，汽車變速性能還直接影響汽車燃油經(jīng)濟(jì)性和運(yùn)輸生產(chǎn)效率、變速過程的全面研究以提高汽車的動(dòng)力性，具有積極的社會(huì)效益和明顯的經(jīng)濟(jì)效益。 現(xiàn)代汽車上廣泛采用活塞式內(nèi)燃機(jī)作為動(dòng)力源,其轉(zhuǎn)矩和轉(zhuǎn)速變化范圍較小,而復(fù)雜的使用條件則要求汽車的牽引力和車速能在相當(dāng)大的范圍內(nèi)變化.所以,在汽車傳動(dòng)系中設(shè)置了變速器. 手動(dòng)變速箱的許多最近的發(fā)展集中在為降低成本和體積的新制造方法上。傳統(tǒng)來說，變速箱制造包含大量的昂貴的機(jī)器，以及為機(jī)械加工和裝配操作所需留出的空間限制的設(shè)計(jì)。最新的技術(shù)包括，比如說在最新的Ford／Getrag 6速變速箱中可以看到的激光焊接沖壓鋼滑動(dòng)齒輪選擇器軸套。為替代前一代變速箱的鑄鐵撥叉，這種精致而堅(jiān)固的設(shè)計(jì)方案可以導(dǎo)致更少的對(duì)內(nèi)部的傷害。齒輪盤片的激光和摩擦焊接同時(shí)保證了所需機(jī)器設(shè)計(jì)空間的降低，這是一種由雷諾公司在5速副軸原型變速箱設(shè)計(jì)中發(fā)明的技術(shù)，命名為EMl，曾在2000年展出并因?yàn)樗暮?jiǎn)單和輕便僅22公斤卻能提供140N?m的轉(zhuǎn)矩而出名。另一個(gè)方面上，設(shè)計(jì)人員也在其齒輪提供高轉(zhuǎn)矩輸出的設(shè)計(jì)上認(rèn)真地研究過，提高了耐久性和低噪聲水平。 3. 課題設(shè)計(jì)（或研究）的內(nèi)容 貨車的基本參數(shù)位：選用柴油發(fā)動(dòng)機(jī)，最高車速位97km/h，最后轉(zhuǎn)彎半徑≤5.5米,乘員人數(shù)2人,檔位數(shù)4+1,載重量為3噸. 參照相應(yīng)的車型的整體布局參數(shù)(網(wǎng)上可以查到,如慶鈴系列輕型貨車等)、東風(fēng)3噸輕型貨車實(shí)物（車輛與交通實(shí)驗(yàn)室整車陳列室內(nèi)）和其他有關(guān)車型（到院資料室查閱）,完成貨車的變速器及操縱機(jī)構(gòu)任務(wù)設(shè)計(jì). 4. 設(shè)計(jì)（或研究）方法 根據(jù)所給技術(shù)條件和要求，按照變速器設(shè)計(jì)的方法，將變速器設(shè)計(jì)為中間軸式4+1擋手動(dòng)變速器，無超速擋，換檔機(jī)構(gòu)用鎖環(huán)式同步器。分動(dòng)器有高低擋，不但支持常規(guī)的后輪驅(qū)動(dòng)，且能進(jìn)行四輪高速驅(qū)動(dòng)和四輪低速驅(qū)動(dòng)。 5. 實(shí)施計(jì)劃 第6周： 調(diào)研，收集、分析資料； 第7周： 全組集體討論，制定、確定總體方案； 第8-11周： 完成總圖設(shè)計(jì)； 第12-14周： 完成零、部件圖紙?jiān)O(shè)計(jì)及機(jī)繪圖，按要求整理、編寫設(shè)計(jì)說明書； 第15周： 整理全部設(shè)計(jì)文件，最后交卷； 第16周： 審核、互審評(píng)閱設(shè)計(jì)； 第17周： 答辯，評(píng)定成績(jī)。 指導(dǎo)教師意見 指導(dǎo)教師簽字： 2008 年 月 日 研究所（教研室）意見 研究所所長(zhǎng)（教研室主任）簽字： 2008年 月 日 3 車輛與動(dòng)力工程學(xué)院畢業(yè)設(shè)計(jì)說明書 三噸柴油動(dòng)力貨車設(shè)計(jì)（變速器及操縱機(jī)構(gòu)設(shè)計(jì)） 摘要 我設(shè)計(jì)的是題目是輕型貨車的變速器及其操縱機(jī)構(gòu)，發(fā)動(dòng)機(jī)選用CY4D43T，主要任務(wù)是協(xié)助總體設(shè)計(jì)人員完成外形和總體布置方案，獨(dú)立完成變速器及其操縱機(jī)構(gòu)的設(shè)計(jì)。 變速器用于改變發(fā)動(dòng)機(jī)的曲軸的轉(zhuǎn)矩及轉(zhuǎn)速，以適應(yīng)在起步、加速、行駛以及克服各種道路障礙等不同行駛條件下對(duì)驅(qū)動(dòng)車輪牽引力及車速的不同要求的需要。 在設(shè)計(jì)開始時(shí)，根據(jù)發(fā)動(dòng)機(jī)給定的轉(zhuǎn)速和設(shè)計(jì)所要求的車速來求出總傳動(dòng)比，然后初步確定主減速器的傳動(dòng)比，以及變速器的各檔傳動(dòng)比，通過轉(zhuǎn)矩來確定中心距，用初選的傳動(dòng)比來確定各齒輪的詳細(xì)參數(shù)，之后確定實(shí)際傳動(dòng)比，并核算各齒輪是否滿足彎曲強(qiáng)度和疲勞強(qiáng)度的要求，在畫圖過程中確定軸的實(shí)際尺寸和軸承的布置位置，然后計(jì)算軸的強(qiáng)度是否滿足要求，之后通過轉(zhuǎn)矩等條件計(jì)算各軸承的壽命。最后是把收集的外文資料進(jìn)行翻譯。 關(guān)鍵詞：變速器，轉(zhuǎn)速，傳動(dòng)比，強(qiáng)度。THREE TONS OF DIESEL-POWERED VEHICLE DESIGN(TRANSMISSION AND MANIPULATION OF DESIGN) Abstract I design is the subject of a light goods vehicle transmission and manipulation of institutions，engine choice CY4D43T，main task is to help shape and design to complete the overall layout scheme，Independent Transmission completed the design and manipulation. Transmission to change the engine torque and speed of the crankshaft，to meet at the starting to accelerate, on the road and obstacles to overcome all kinds of different driving conditions on the drive wheels, traction and speed the needs of the different requirements. At the beginning of the design，according to the top of the engine speed and the speed required by the design in order to obtain the transmission ratio，then tentatively determined the main transmission ratio reducer.And the transmission of the file transmission ratio，through the torque to determine the distance，with the primary transmission gear ratio to determine the details of the parameters.After the actual transmission ratio，and whether the accounting of the gear bending strength and fatigue strength to meet the requirements，paint in the process of determining the actual size and shaft bearings of the layout position.Then calculate the strength of the shaft to meet demand.After the torque through the bearings, and other conditions of life calculated。Finally, the data collected by the foreign-language translation。 KEY WORDS：transmission，speed，transmission ratio，strength 目錄 第一章 前言 …………………………………………………… 1 第二章 變速器的結(jié)構(gòu)設(shè)計(jì)……………………………………… 3 §2.1變速器由傳動(dòng)機(jī)構(gòu)與操縱機(jī)構(gòu)組成 ………………… 3 第三章 變速器的主要參數(shù)選擇 ……………………………… 5 §3.1擋數(shù) ……………………………………………………… 5 §3.2傳動(dòng)比 …………………………………………………… 5 §3.2.1傳動(dòng)比范圍 ………………………………………… 5 §3.3確定變速器中心距 …………………………………… 7 §3.4齒輪參數(shù)的選擇 ……………………………………… 8 §3.4.1 模數(shù) ………………………………………………… 8 §3.4.2壓力角的選擇 ……………………………………… 8 §3.4.3螺旋角……………………………………………… 9 §3.4.4齒輪寬度…………………………………………… 9 §3.4.5變位系數(shù)的選擇原則……………………………… 9 §3.4.6齒頂高系數(shù)………………………………………… 10 §3.5變速器各擋齒數(shù)分配…………………………………… 10 §3.5.1確定一擋齒輪的齒數(shù)……………………………… 10 §3.5.2對(duì)中心距A進(jìn)行修正……………………………… 10 §3.5.3確定常嚙合傳動(dòng)齒輪副的齒數(shù)…………………… 10 §3.5.4確定其他各檔齒輪的齒數(shù)………………………… 10 第四章 變速器齒輪的強(qiáng)度計(jì)算及材料選擇…………………… 12 §4.1齒輪的設(shè)計(jì)計(jì)算 ………………………………………… 12 §4.1.1直齒輪……………………………………………… 12 §4.1.2斜齒輪……………………………………………… 12 §4.2齒輪彎曲強(qiáng)度計(jì)算：…………………………………… 13 §4.2.1一檔倒檔直齒輪…………………………………… 13 §4.2.2常嚙合，二，三擋斜齒輪：………………………… 14 §4.3齒輪接觸應(yīng)力：………………………………………… 14 第五章 結(jié)論………………………………………………………… 16 第六章 參考文獻(xiàn)…………………………………………………… 17 第七章 致謝………………………………………………………… 18 車輛與動(dòng)力工程學(xué)院畢業(yè)設(shè)計(jì)說明書 The NV4500 five-speed transmission in our high-mileage diesel-powered '95 Chevy 2500 pickup was exhibiting some bad behavior. Part of the problem was that the clutch wasn't releasing completely when the clutch pedal was depressed. This made selecting First Gear a grinding challenge. Eventually, the main driver of this rig quit using the clutch during standard gearshifts because it wasn't disengaging anyway. Another problem was that as the transmission began to age, it began to leak. In a pinch, someone ignored the requirement of Castrol Syntorq LT synthetic oil (or equivalent) and fed it petroleum-based oil. Things quickly went from bad to worse as the synchronizer rings objected to the wrong oil. It wasn't long before the trans was becoming very hard to live with. Since we're not manual-transmission rebuild experts, we took the truck to someone who is. Larry's Automotive is located on the outskirts of Rock City, Illinois. The owner, Rick Jacobson, has been wrenching on trucks and cars since he was 12 years old, so he knows his stuff. His knowledge is vast and varied, and his resume includes a couple of years fabricating and wrenching for noted off-road racer Scott Taylor. Jacobson and his team of technicians not only have a working knowledge of vehicles (including heavy trucks) from end to end, they also know the intricate workings of both automatic and manual transmissions. Best of all, Jacobson is a 'wheeler, so he's intimately familiar with how we use our rigs. Jacobson and his crew removed our crusty trans and then they totally disassembled it and gave us the tally of what bad things were lurking inside. The list of parts we needed was lengthy. Normally, they'd just order the parts and complete the rebuild in a few days, but we wanted to utilize specific companies, so we hit the phone. The first place we called was Rockland Standard Gear. RSG, as they're called, has been in business for more than 25 years, and they're one of the largest suppliers of manual transmission and transfer-case parts in the country. Here's some mind-boggling facts: They are the only aftermarket company ever selected to rebuild transmissions for ZF; they are one of five Master distributors for Borg-Warner transfer-case parts; they are one of 10 Elite distributors for Tremec; and they are a major distributor for New Venture Gear. Needless to say, we knew they could handle our NV4500 needs. Since we're not manual-transmission rebuild experts, we took the truck to someone who is. Larry's Automotive is located on the outskirts of Rock City, Illinois. The owner, Rick Jacobson, has been wrenching on trucks and cars since he was 12 years old, so he knows his stuff. His knowledge is vast and varied, and his resume includes a couple of years fabricating and wrenching for noted off-road racer Scott Taylor. Jacobson and his team of technicians not only have a working knowledge of vehicles (including heavy trucks) from end to end, they also know the intricate workings of both automatic and manual transmissions. Best of all, Jacobson is a 'wheeler, so he's intimately familiar with how we use our rigs. Jacobson and his crew removed our crusty trans and then they totally disassembled it and gave us the tally of what bad things were lurking inside. The list of parts we needed was lengthy. Normally, they'd just order the parts and complete the rebuild in a few days, but we wanted to utilize specific companies, so we hit the phone. The first place we called was Rockland Standard Gear. RSG, as they're called, has been in business for more than 25 years, and they're one of the largest suppliers of manual transmission and transfer-case parts in the country. Here's some mind-boggling facts: They are the only aftermarket company ever selected to rebuild transmissions for ZF; they are one of five Master distributors for Borg-Warner transfer-case parts; they are one of 10 Elite distributors for Tremec; and they are a major distributor for New Venture Gear. Needless to say, we knew they could handle our NV4500 needs. Since the clutch in our Chevy was original, our second call was to Center force. The company has been around since the early '80s and was started by Bill Hays, the founder of Hays' Clutches in the 1950s. Bill Hays designed and patented the Center force Weighted Clutch System, which increases pressure-plate clamping force while maintaining easy pedal effort. Further, his new design solved the sticking-over-center problem of diaphragm clutches. Centerforce offers a full range of clutches and flywheels for a number of applications. What follows is a synopsis of the major items addressed by the team at Larry's Automotive. It'll give you a good idea of what you can expect if you plan on having your NV4500 rebuilt. Here's our Larry's Automotive-rebuilt trans ready to reinstall in our Chevy pickup. The folks at RSG note that one of the important things to remember about the NV4500 is that it requires Castrol Syntorq LT synthetic oil (or equivalent--RSG has an equivalent that they sell under their own brand name) due to the synchronizer material and design, as well as the large amount of gear teeth in mesh in this unit. Using standard gear oil will cause the NV4500 to shift poorly and eventually fail. Our input shaft (left) was showing significant wear at the point where the pilot bearing contacted the shaft, so we installed a new shaft from RSG. Jacobson always inspects the entire shaft for any signs of wear. Surprisingly, the gear on the other end (which is actually Fourth Gear) was in pretty good shape On the left you can see our old synchro ring for the Third to Fourth gearshift, pictured next to the new RSG synchro ring. All synchro rings are a common wear item on manual transmissions. When these wear, they basically lose friction and the result is grinding when shifting. All of our synchros were toast, so they were replaced with new units from RSG. The NV4500 uses two kinds of synchros: multi-piece and single-piece. This is our Second Gear (left) pictured next to our new RSG Second Gear. Jacobson found that the drive ring on the First to Second Gear single-piece synchro was worn into the teeth on Second Gear. Also, where the shift collar engages into the teeth of the gear, the teeth were chipped. This was most likely due to forcing the unit into gear before the synchro had caught up to the gear 5 Here you can see Fifth Gear. Our old one is on the left and the new RSG unit is on the right. Ours clearly showed wear from pulling heavy loads. The hard surface was worn off the teeth and the inside splines also showed wear. On the left you can see an example of a tapered roller bearing that we removed from our trans. These are critical components that must be inspected, but they don't always need to be replaced. All of our bearings, with the exception of the caged needle bearings, showed gray areas indicating wear, as well as pitting. New tapered roller bearings were included in RSG's Bearing and Seal kit. RSG sent us a remanufactured shift tower (right). Our shift forks showed a lot of wear, which often results in them not engaging the shift collar far enough into the gear. This can cause the trans to pop out of gear. Jacobson normally inspects the shift tower for a variety of wear items that can make a trans operate poorly. This is the front bearing retainer, which holds the front main bearing in, and it's what the throwout bearing rides on. After a thorough inspection, Jacobson gave ours a clean bill of health. After inspecting the bearing surfaces, splines, and Fifth Gear nut retaining threads, Jacobson also found that our mainshaft was in great shape. As we started reassembling our trans, Jacobson pointed out that all new items such as snap rings are included in the RSG small parts kit and they must be installed. Here you can see the shaft with First and Second Gear and other components installed. Jacobson is installing the pin that locks in a thrust washer. Part of its duties include keeping Second Gear from turning against Third Gear. There are three pins like this in the NV4500. Here you can see the mainshaft with everything mocked up but without the bearings pressed on in their finished position. During reassembly, Jacobson says it's important to ensure that the synchros and slide collars aren't installed backwards. All transmissions, especially the NV3500, will have all kinds of issues if these parts are reassembled incorrectly 12 Surprisingly, our countershaft was in good shape. We just installed a new bearing and overdrive synchro ring. This shaft carries a load in all gears except Fourth Gear (Fourth Gear is the 1.00:1 gear, so it doesn't route power through the countershaft) It's important to correctly install the rear bearing retainer (shown), because it also holds the reverse idler gearshaft in place. If the reverse idler gearshaft is incorrectly installed, you can bend the bearing retainer and even possibly crack the transmission case. These shims go between the rear bearing retainer and the bearing to provide proper endplay for the mainshaft (the countershaft also uses shims to set endplay). After installing new bearings, the endplay may change, so endplay must be measured with a dial indicator. New shims are included in the RSG small parts kit. Here you can see our dual mass flywheel after it was resurfaced. Before it was sent out, Jacobson gave it a thorough inspection that included looking for heat cracks and inspecting the springs to make sure they were intact and in good shape. Overall, our flywheel was in good shape, especially considering the high mileage and abuse it has endured. With almost 100,000 miles on the odometer, it came as no surprise that out factory clutch was shot, so we installed a new Centerforce Dual Friction clutch assembly. This bad boy generates up to a 90 percent increase in holding capacity over the stock clutch. Even with this vastly increased holding capacity, it provides smooth engagement and light pedal pressure. Centerforce also sent a clutch pilot tool and a clutch release (throwout) bearing. The technicians at Larry's Automotive did battle with our pilot bearing in an effort to remove it from the engine block. Part of the problem was that the input shaft had severely worn the pilot bearing, so there was little for the puller to latch onto. This is a common issue with high-mileage manual-transmission vehicles Fluid leakage and a dragging clutch forced us to install a new clutch slave. The leakage problem was solved, but not the dragging. Jacobson and his crew ended up lengthening the stock clutch linkage by about 0.25 inch to effectively raise the clutch pedal from the floor when depressed. This allowed the clutch to totally disengage A busy shop and our tight deadlines meant we had to install the trans "old-school" without the truck on a hoist. First, the clutch and bellhousing were installed, then the trans, and then the transfer case and driveshafts. Our first drive revealed a perfect shifting transmission, and thanks to the creativity of the guys at Larry's Automotive, we no longer have a dragging clutch Fifth Gear And The Dodge NV4500. Having problems with Fifth Gear in your Dodge NV4500? There is a fix. According to the folks at Rockland Standard Gear, the Dodge NV4500 had a design defect in the splines on the mainshaft Fifth Gear. The splines were not long enough and they were manufactured with an incorrect angle. This caused a slight creep of the Fifth Gear on the mainshaft due to throttle changes, which resulted in many of the units having the Fifth Gear loosen its retaining nut. This allowed the gear to move out of position on the mainshaft and cease to function. If you have a Dodge NV4500 with this problem, you have options. One is to purchase the kit that RSG offers. It includes a gear and mainshaft that utilize split-ring washers under a locknut to retain the gear under thrust loads. It also has redesigned full-length splines on the gear and corrected spline angles. NV公司5速傳輸在我們的高里程柴油動(dòng)力'95雪佛蘭2500皮卡中顯露出一些不良性能。部分4500存在當(dāng)離合器踏板被壓抑時(shí)離合器不能完全釋放的問題。這就出現(xiàn)了要選擇第一齒輪磨床的挑戰(zhàn)。最終，這種鉆機(jī)退出的主要驅(qū)動(dòng)力是使用裝在標(biāo)準(zhǔn)齒輪之間的離合器，因?yàn)樗鼰o論如何都不會(huì)脫離。另一個(gè)問題是當(dāng)傳輸時(shí)間變長(zhǎng)就會(huì)開始泄漏。在一個(gè)夾送，有人無視Castrol Syntorq審裁處合成油和美聯(lián)儲(chǔ)它以石油為基礎(chǔ)的石油的規(guī)定。事情很快變得更糟糕，作為同步器戒指反對(duì)錯(cuò)了油。。 因?yàn)槲覀冞€沒有手動(dòng)傳動(dòng)重建專家，我們選擇了適當(dāng)?shù)娜诉x去做。拉里汽車是坐落于郊區(qū)的巖城，伊利諾州。它的所有人是里克雅各布森，在他12歲的時(shí)候就一直沉浸在卡車和汽車?yán)铮运私馑鶕碛械?。他擁有豐富的和廣泛的知識(shí)，他的重新開始包括兩年的改造和離道車手斯科特泰勒。雅各布森和他的團(tuán)隊(duì)的技術(shù)不僅對(duì)車輛（包括重型卡車）有頭至尾的操作知識(shí)，他們也知道關(guān)于自動(dòng)和手動(dòng)變速器的錯(cuò)綜復(fù)雜的運(yùn)作。最重要的是，雅各布森是一個(gè)創(chuàng)始者，所以他很熟悉我們是如何使用我們的裝備。 雅各布森和他的機(jī)組人員刪除我們的，然后他們把它完全拆解，并給我們所有潛伏在其中的不好的方面的總數(shù)。名單中的一部分方面我們需要漫長(zhǎng)的時(shí)間去解決。通常，他們只要求這部分可以在數(shù)天內(nèi)完成重建，但我們想要利用特定的公司，所以我們要找到解決的途徑。 放在首位的是我們所謂的羅克蘭標(biāo)準(zhǔn)齒輪。正如薪酬研究小組所稱的，它已在業(yè)務(wù)中存在了至少25年，他們是最大的手動(dòng)變速器的供應(yīng)商之一，并可以在國(guó)內(nèi)進(jìn)行轉(zhuǎn)移。這里有一些想法驚人的事實(shí)：他們是唯一的售后公司始終都選定重建的變速器ZF ，他們是一對(duì)五的分銷商在博格-華納轉(zhuǎn)移的情況下，;他們是一對(duì)十的精英分銷商Tremec ;他們是一個(gè)主要的分銷商作為新企業(yè)的齒輪。不用說，我們知道他們可以處理我們對(duì)nv4500的需要。 由于離合器在我們的雪佛蘭是原生的，所以我們又稱它為第二個(gè)中心的力量。該公司從八十年代初期一致被關(guān)注，并由在20世紀(jì)50年代發(fā)現(xiàn)離合器的海斯創(chuàng)建。比爾海斯設(shè)計(jì)了加權(quán)離合器系統(tǒng)并獲得專利，該系統(tǒng)使壓力增加板的夾緊力增強(qiáng)，同時(shí)保持踏板的牢固。此外，他的新設(shè)計(jì)解決了膜片離合器超過中心的問題。第一個(gè)中心力量提供全套的離合器和飛輪為一申請(qǐng)數(shù)目。 以下概要的主要項(xiàng)目所涉及的是在拉里汽車的團(tuán)隊(duì)。您可以預(yù)期如果您打算讓您的nv4500重建，它會(huì)給您一個(gè)好的建議。 這里是我們的拉里的汽車重建跨準(zhǔn)備重新安裝在我們的雪佛蘭皮卡。鄉(xiāng)親在薪酬研究小組注意到，其中一個(gè)重要的事情要記住有關(guān)nv4500的是，它需要castrol syntorq審裁處合成油（或同等學(xué)歷-薪酬研究小組有一個(gè)相等于他們下出售自己的品牌名稱） ，由于同步器材料和設(shè)計(jì)，以及大量的齒輪齒數(shù)在網(wǎng)格在這股。使用標(biāo)準(zhǔn)的齒輪油，會(huì)導(dǎo)致nv4500轉(zhuǎn)向不佳，并最終失敗。 我們的輸入軸（左）表現(xiàn)出顯著的磨損點(diǎn)，試驗(yàn)軸承接觸軸，所以我們安裝了一個(gè)新的軸從薪酬研究小組。雅各布森始終考察整個(gè)軸的任何跡象磨損。令人驚訝的是，對(duì)齒輪的另一端（其實(shí)是四檔）是非常好的表現(xiàn) 在左邊你可以看到我們的老同步響第三至第四變速，照片旁邊的新的薪酬研究小組同步環(huán)。所有同步環(huán)是一種常見的磨損的項(xiàng)目手冊(cè)傳送的安全性。當(dāng)這些磨損，他們基本上失去了摩擦和結(jié)果是磨削時(shí)移。我們所有的synchros分別致祝酒辭，所以他們更換新單位從薪酬研究小組。該nv4500使用兩種synchros ：多件;單件。 這是我們的第二個(gè)齒輪（左）合照明年我們新的薪酬研究小組第二齒輪。雅各布森發(fā)現(xiàn)該驅(qū)動(dòng)器響就第一項(xiàng)至第二齒輪單件同步被磨損到牙齒上第二個(gè)齒輪。此外，那里轉(zhuǎn)移到衣領(lǐng)從事牙齒的齒輪，牙齒插話。這是最有可能是由于迫使結(jié)合本單位的齒輪前同步已趕上了以齒輪 在這里您可以看到第五齒輪。我們的老，一個(gè)是在左邊和新的薪酬研究小組的單位是正確的。我們清楚地表明，從磨損拉重物。硬表面磨損小康牙齒和內(nèi)花鍵還表明，磨損。 在左邊你可以看到一個(gè)例子，一個(gè)圓錐滾子軸承，我們從我們的轉(zhuǎn)運(yùn)。這些都是關(guān)鍵部件必須檢查，但他們并不總是需要更換。我們所有的軸承，除籠針軸承，顯示灰色地帶，顯示磨損，以及孔蝕。新的圓錐滾子軸承被列入在薪酬研究小組的軸承和密封包。 薪酬研究小組向我們發(fā)出一再造轉(zhuǎn)移塔（右） 。我們的轉(zhuǎn)移叉表明了很多磨損，這往往結(jié)果在他們不要從事轉(zhuǎn)移的衣領(lǐng)遠(yuǎn)遠(yuǎn)不夠成齒輪。這可能會(huì)導(dǎo)致跨到彈出的齒輪。雅各布森通常考察的轉(zhuǎn)變，塔各種磨損的項(xiàng)目可以使一個(gè)跨經(jīng)營(yíng)不善。 這是前軸承聘，擔(dān)任前線主軸承在，它的是什么throwout軸承游戲機(jī)上。經(jīng)過徹底的檢查，雅各布森了我們一個(gè)清潔的條例草案的健康狀況。 之后，檢查支座表面，樣條，第五齒輪螺母保留線程，雅各布森還發(fā)現(xiàn)，我們的主軸是在偉大的形狀。 正如我們重新開始我們的轉(zhuǎn)運(yùn)，雅各布森指出，所有新項(xiàng)目，如管理單元戒指，都包括在薪酬研究小組小零件和工具包，他們必須安裝。在這里您可以看到軸與第一和第二齒輪和其他組件安裝。雅各布森是安裝引腳，鎖在一個(gè)推力墊圈。的一部分，其職責(zé)包括保持第二齒輪從轉(zhuǎn)折對(duì)第三方的齒輪。有三個(gè)引腳一樣，在這方面nv4500 。 這里，您可以看到主軸與一切嘲笑，但沒有軸承的壓力就在其完成的立場(chǎng)。在組裝，雅各布森說，它的重要性，以確保該synchros及幻燈片衣領(lǐng)未安裝倒退。一切播送行為，特別是nv3500 ，將有各種問題，如果這些零件重新不當(dāng) 奇怪的是，我們的countershaft是在良好的形狀。我們剛剛安裝了一個(gè)新的軸承和超載同步環(huán)。這軸進(jìn)行了負(fù)荷在所有齒輪除四檔（四檔是1.00:1齒輪，因此它不路線的權(quán)力，通過countershaft ） 它的重要性，正確安裝后軸承家臣（如圖所示） ，因?yàn)樗渤窒喾吹耐休乬earshaft在的地方。如果反向托輥gearshaft是正確安裝，您可以彎曲軸承保持，甚至可能打擊傳輸?shù)那闆r。 這些shims轉(zhuǎn)到之間的后方軸承保持和軸承，提供適當(dāng)?shù)膃ndplay為主軸（ countershaft還利用shims設(shè)置endplay ） 。之后，安裝新的軸承， endplay可能會(huì)改變，因此， endplay必須加以衡量與撥號(hào)的指標(biāo)。新shims都包括在薪酬研究小組小零件包。 在這里您可以看到我們的雙質(zhì)量飛輪后，這是重鋪。之前，它被送往指出，雅各布森了一個(gè)徹底的檢查，其中包括尋找熱和裂縫，檢查彈簧，以確保他們完整，在良好的形狀。整體來說，我們的飛輪是在良好的形狀，特別是考慮到高里程和濫用，它已經(jīng)歷。 幾乎十萬英里里程表，它并不令人感到意外指出，離合器廠拍攝，因此，我們安裝了一個(gè)新的第一力量中心雙摩擦離合器大會(huì)。這個(gè)壞小子的產(chǎn)生多達(dá)90 ％的增長(zhǎng)，容納超過股票離合器。即使這大大增加了控股能力，它提供了平穩(wěn)的接觸和輕踏板的壓力。 第一力量中心也發(fā)出了一個(gè)離合器試驗(yàn)工具和離合器釋放軸承。 技術(shù)員在拉里的汽車沒有戰(zhàn)役與我們的飛行員，同時(shí)努力消除它從發(fā)動(dòng)機(jī)缸體。部分問題是，該輸入軸已嚴(yán)重磨損試驗(yàn)的影響，所以很少為牽引，以抓住。這是一個(gè)常見的問題與高里程手動(dòng)傳動(dòng)車輛 腦脊液漏和一拖離合器強(qiáng)迫我們安裝一個(gè)新的離合器的奴隸。泄漏問題得到解決，而不是拖延。雅各布森和他的機(jī)組人員結(jié)束了延長(zhǎng)股票離合器的聯(lián)系，約0.25英寸，有效地提高離合器踏板從地板時(shí)，沮喪。這使離合器完全脫鉤 一個(gè)繁忙的商店和我們的時(shí)間緊迫，意味著我們已安裝的跨國(guó)“老學(xué)?！睕]有車就一啟閉機(jī)。第一，離合器和bellhousing安裝，然后跨，然后轉(zhuǎn)移和driveshafts案件。我們的第一個(gè)驅(qū)動(dòng)器顯示，一個(gè)完美的換擋變速器，和感謝的創(chuàng)造力，球員在拉里汽車，我們不再有拖曳離合器 第五齒輪和道奇nv4500 在您的道奇nv4500存在第五齒輪的問題 ？這里有一個(gè)修補(bǔ)程序。依照民間的羅克蘭標(biāo)準(zhǔn)齒輪，道奇nv4500在主軸第五齒輪鍵槽的設(shè)計(jì)中存在缺陷。鍵槽沒有足夠的長(zhǎng)而且他們制造的角度不正確。由于油門的變化引起了在主軸上的第五齒輪的輕微變化，造成許多的單位有五分之一齒輪放寬其保留螺母。這使齒輪遷出了對(duì)主軸的位置并停止運(yùn)作。如果您的道奇nv4500存在這個(gè)問題，你有解決的方法。一種是購(gòu)買工具包，薪酬研究小組提供。它包括一個(gè)齒輪和主軸，利用分裂環(huán)墊圈下固定螺帽保留齒輪下推力的負(fù)荷。另一種是經(jīng)過重新設(shè)計(jì)的在齒輪上有完整長(zhǎng)度和正確角度的鍵槽。 - 9 -