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　　With the development of engineering vehicles, the transmission technology is also constantly improving. Now, the gearbox of common automatic mixer is generally 8-12, and the speed ratio is generally between 14-1. With the continuous development of modern transmission technology, materials are developing in the direction of high strength, high wear resistance and lightweight, and the gears are constantly changing, which plays an important role in reducing the fuel consumption of the mixer and reducing the loss of transmission kinetic energy. The gearbox is an important part of the automatic loading concrete mixer, but the gearbox needs maintenance. If we neglect the maintenance at ordinary times, it may cause the mixer truck to shift improperly, weaken the power, and make it difficult to rotate the tank. Because there are a lot of gears and synchronizers in the gearbox, they can work normally under the condition of good lubrication. If the gearbox oil is not changed for a long time, it is likely to cause the gearbox lubrication difficulty, heat dissipation difficulty and gear wear of cement mixer truck. So how should we maintain the gearbox of the automatic loading concrete mixer?

　　一、自動(dòng)攪拌車(chē)變速箱的保養方法

　　1、 Maintenance method of automatic mixer gearbox

　　1、正確把握變速箱的油的使用周期，定期更換。一般多數廠(chǎng)家會(huì )建議變速箱換油周期通常為兩年或4~6萬(wàn)。車(chē)主朋友們在使用車(chē)輛時(shí)要保持變速箱油清潔，因為變速箱油運用時(shí)間長(cháng)了以后會(huì )發(fā)生油垢，有可能會(huì )構成油泥，會(huì )加大各摩擦片和各部件的磨損，還會(huì )使各閥體中閥體的移動(dòng)不暢，油壓操控受影響，從而使全自動(dòng)攪拌車(chē)變速箱出現異常。

　　1. Correctly grasp the service life of transmission oil and replace it regularly. Generally, most manufacturers will recommend that the oil change interval of gearbox is usually two years or 40000 ~ 60000 km. Car owners should keep the transmission oil clean when using the vehicle, because the transmission oil will become oil dirt after using for a long time, which may form oil sludge, increase the wear of friction plates and components, and block the movement of valve body in each valve body, and affect the oil pressure control, so that the gearbox of automatic mixer truck appears abnormal.
            

　　2、經(jīng)常查看變速箱油液位是不是正常。查看變速箱油液需要將油預熱到50℃左右，再將擋位桿在各擋位逗留2秒鐘后置于泊車(chē)擋，此刻油尺正常油面應坐落高限度與低限度線(xiàn)之間，如未達到，應及時(shí)增加一樣質(zhì)量的油品。

　　2. Always check whether the transmission oil level is normal. To check the transmission oil, it is necessary to preheat the oil to about 50 ℃, and then put the gear lever in the parking gear after staying in each gear for 2 seconds. At this moment, the normal oil level of the oil dipstick should be located between the high limit line and the low limit line. If not, the same quality oil should be added in time.

　　3、正確更換變速箱油。動(dòng)態(tài)換油是目前比較提倡的換油方法，選用專(zhuān)用的變速箱清潔設備，在變速箱工作的過(guò)程中，將舊油充沛循環(huán)，排放潔凈后再參加新的變速箱油，從而使換油率高達90以上，確保換油。

　　3. Change the transmission oil correctly. Dynamic oil change is a relatively advocated oil change method at present. The special gearbox cleaning equipment is selected to fully recycle the old oil during the working process of the gearbox. After the oil is discharged and cleaned, the new transmission oil is added, so that the oil change rate can be as high as 90 and the oil change efficiency can be ensured.

　　4、還有就是不要隨便拆卸變速箱，變速箱在裝配的時(shí)候，是廠(chǎng)家經(jīng)過(guò)準確調配的，包括每一個(gè)螺絲的位置和松緊度都是有技術(shù)參數的，如果我們手工拆卸以后，很難裝回原來(lái)的位置，這勢必會(huì )加重變速箱額磨損。需要維修變速箱一定要到底盤(pán)廠(chǎng)家的維修服務(wù)站中，由的維修人員進(jìn)行操作。

　　4. What's more, don't dismantle the gearbox casually. When the gearbox is assembled, it is accurately allocated by the manufacturer, including the position and tightness of each screw. If we disassemble it manually, it is difficult to install it back to the original position, which is bound to aggravate the wear of the gearbox. If you need to repair the gearbox, you must go to the maintenance service station of the chassis manufacturer, and be operated by professional maintenance personnel.

　　司機朋友們可根據以上的四點(diǎn)對自動(dòng)上料混凝土攪拌車(chē)的變速箱進(jìn)行日常保養，延長(cháng)其使用壽命。

　　Driver friends can according to the above four points on the automatic feeding concrete mixer gearbox routine maintenance, to extend its service life.

　　二、自動(dòng)攪拌車(chē)在日常的使用中一定要注意的兩點(diǎn)

　　2、 Two points must be paid attention to in daily use of automatic mixer

　　1、下坡不要放空擋滑行，這種開(kāi)車(chē)習慣要不得，不僅會(huì )損壞變速箱，還有非常大的隱患。

　　1. Don't slide in neutral when you go downhill. This driving habit is very bad. It will not only damage the gearbox, but also cause great security risks.

　　2、在高檔區高速行駛的時(shí)候，不要把變速箱變入低速檔，這回導致變速箱內部齒輪的磨損甚損壞。因為一旦變速箱中磨損的粉末或殘渣多了，會(huì )隨著(zhù)變速箱油擴散，快速磨損整個(gè)變速箱的所有齒輪。

　　2. When driving at high speed in the high-grade area, do not change the gearbox into low-speed gear, which will cause wear and even damage to the internal gears of the gearbox. Because once the wear powder or residue in the gearbox is too much, it will quickly wear all the gears of the whole transmission as the transmission oil diffuses.