(畢業(yè)設(shè)計(jì))eq1090載貨汽車(chē)變速器設(shè)計(jì)說(shuō)明書(shū)-資料下載頁(yè)
2025-08-06 05:01本頁(yè)面
【正文】 t of gears, called a pound planetary gearset, that looks like a single planetary gearset but actually behaves like two planetary gearsets bined. It has one ring gear that is always the output of the transmission, but it has two sun gears and two sets of planets.Next you can see the inside of the planet carrier. The shorter gears are engaged only by the smaller sun gear. The longer planets are engaged by the bigger sun gear and by the smaller planets. First Gear In first gear, the smaller sun gear is driven clockwise by the turbine in the torque converter. The planet carrier tries to spin counterclockwise, but is held still by the oneway clutch which only allows rotation in the clockwise direction and the ring gear turns the output. The small gear has 30 teeth and the ring gear has 72, so the gear ratio is: Ratio R/S 72/30 :1So the rotation is negative :1, which means that the output direction would be opposite the input direction. But the output direction is really the same as the input direction this is where the trick with the two sets of planets es in. The first set of planets engages the second set, and the second set turns the ring gear。 this bination reverses the direction. You can see that this would also cause the bigger sun gear to spin。 but because that clutch is released, the bigger sun gear is free to spin in the opposite direction of the turbine counterclockwise . Second Gear This transmission does something really neat in order to get the ratio needed for second gear. It acts like two planetary gearsets connected to each other with a mon planet.The first stage of the planet carrier actually uses the larger sun gear as the ring gear. So the first stage consists of the sun the smaller sun gear , the planet carrier, and the ring the larger sun gear . The input is the small sun gear。 the ring gear large sun gear is held stationary by the band, and the output is the planet carrier. For this stage, with the sun as input, planet carrier as output, and the ring gear fixed, the formula is: 1 + R/S 1 + 36/30 :1The planet carrier turns times for each rotation of the small sun gear. At the second stage, the planet carrier acts as the input for the second planetary gear set, the larger sun gear which is held stationary acts as the sun, and the ring gear acts as the output, so the gear ratio is: 1 / 1 + S/R 1 / 1 + 36/72 :1To get the overall reduction for second gear, we multiply the first stage by the second, x , to get a :1 reduction. This may sound wacky, but it works. Third GearMost automatic transmissions have a 1:1 ratio in third gear. You39。ll remember from the previous section that all we have to do to get a 1:1 output is lock together any two of the three parts of the planetary gear. With the arrangement in this gearset it is even easier all we have to do is engage the clutches that lock each of the sun gears .If both sun gears turn in the same direction, the planet gears lockup because they can only spin in opposite directions. This locks the ring gear to the planets and causes everything to spin as a unit, producing a 1:1 ratio. 譯文：自動(dòng)變速器如何工作如果您曾經(jīng)駕駛一輛自動(dòng)變速器，那么你就知道，自動(dòng)變速器和手動(dòng)變速器有兩個(gè)大的區(qū)別： ?在自動(dòng)變速器的汽車(chē)沒(méi)有離合器踏板。 ?在自動(dòng)變速器的汽車(chē)沒(méi)有換檔。一旦一切都是自動(dòng)的。 無(wú)論是自動(dòng)變速箱（扭矩轉(zhuǎn)換器）和手動(dòng)變速箱（離合器） ，但他們完全不同。結(jié)果表明，自動(dòng)是絕對(duì)驚人！行星＆齒輪比，你會(huì)發(fā)現(xiàn)一個(gè)巨大組合的零件在一個(gè)相當(dāng)小的空間。除其他事項(xiàng)外，你會(huì)看到： ?一個(gè)巧妙的行星 ?一套制動(dòng)帶，以鎖定部分?一套三濕式離合器片，以鎖定其他部分?一個(gè)令人難以置信的奇數(shù)液壓系統(tǒng)控制離合器和制動(dòng)帶?一個(gè)大型齒輪泵體關(guān)注的該行星。大小約一個(gè)香瓜，這其中的一部分，創(chuàng)造了各個(gè)不同的齒輪比。一切。這件驚人的齒輪已出現(xiàn)howstuffworks》中。你可以從電動(dòng)螺絲刀文。自動(dòng)傳輸包含兩個(gè)完整的行星折疊起來(lái)一個(gè)部分?？纯待X輪比如何，介紹了行星。 ?任何行星有三個(gè)主要組成部分： ?太陽(yáng)輪?行星齒輪和行星齒輪?齒圈上述三個(gè)組成部分，可以輸入，輸出或平穩(wěn)。選擇哪一條決定著傳動(dòng)比。我們先來(lái)看看一個(gè)單一的行星。 其中的行星有一個(gè)72齒環(huán)形齒輪和30太陽(yáng)齒輪。我們可以得到許多不同的比。此外，鎖定三個(gè)組成部分的任何兩個(gè)，一套，1:1。第一傳動(dòng)比輸出速度比輸入速度慢。二是一個(gè)過(guò)載輸出，比輸入速度快。最后是出的方向正好相反。這個(gè)行星齒輪組可以得到，這就是有關(guān)我們的自動(dòng)變速器。這種自動(dòng)變速器采用了一套齒輪，即所謂的復(fù)合型行星，看上去像一個(gè)單行星但實(shí)際上就像兩個(gè)行星結(jié)合起來(lái)。它有一個(gè)始終輸出環(huán)形齒輪有兩個(gè)太陽(yáng)齒輪和兩套行星。 你可以看到里面的。較短的齒輪僅較小的太陽(yáng)輪。第一齒輪在第一擋，較小的太陽(yáng)輪由變矩器順時(shí)針驅(qū)動(dòng)。試圖，由一個(gè)單向離合器（只允許將輪換在順時(shí)針?lè)较颍┖妄X圈輸出。小齒輪有30個(gè)齒齒圈有72個(gè)，因此，傳動(dòng)比是：Ratio R/S 72/30 :1 ，這意味著輸出方向方向。但輸出的方向這是哪里你可以看到，這也將造成較大的太陽(yáng)輪旋轉(zhuǎn)，但因?yàn)殡x合器，大太陽(yáng)齒輪自由的渦輪相反。第齒輪這種傳輸二檔。它的作用就像兩個(gè)行星 實(shí)際上行星輪首先以較大的太陽(yáng)輪作為齒圈。因此，第一階段太陽(yáng)（規(guī)模較小的太陽(yáng)齒輪） ，和（較大的太陽(yáng)齒輪） 。 是小太陽(yáng)齒輪。齒圈（大太陽(yáng)齒輪），輸出。這一階段，計(jì)算公式為：1 + R/S 1 + 36/30 :1在第二階段，大太陽(yáng)齒輪齒圈作為輸出，所以傳動(dòng)比是：1 / 1 + S/R 1 / 1 + 36/72 :1為得到第二檔的總傳動(dòng)減少量，我們?cè)俪艘缘谝浑A， x :1。這聽(tīng)起來(lái)可能比較有趣的，但它。第三大部分自動(dòng)變速器1:1。從前面一節(jié)你會(huì)記得，取得1:1的3個(gè)部。 如果，齒輪鎖死因?yàn)樗麄冎荒芊较?。這鎖住齒圈行星， 1:1的。本科生畢業(yè)設(shè)計(jì)（論文）I41
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