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攪拌車(chē)運行時(shí)，后軸有噪音，特別是轉速急劇變化時(shí)，能聽(tīng)得清清楚楚。當有異常聲音時(shí)，應注意其特點(diǎn)進(jìn)行診斷。

When the mixer truck is running, there is noise on the rear axle, especially when the rotating speed changes sharply, you can hear it clearly. When there is abnormal sound, pay attention to its characteristics for diagnosis.

①自動(dòng)上料攪拌車(chē)運行時(shí)，后軸連續有異響或節律性沖擊噪聲，且隨著(zhù)車(chē)速的增加，噪聲增大。

① When the automatic loading mixer is running, there is continuous abnormal noise or rhythmic impact noise on the rear axle, and the noise increases with the increase of vehicle speed.

②攪拌車(chē)運行時(shí)，后軸有節律性異響，隨車(chē)速的增加而增加，特別是燃油門(mén)或節氣門(mén)關(guān)閉時(shí)，嚴重時(shí)后軸擺動(dòng)。

② When the mixer truck is running, the rear axle makes a rhythmic abnormal noise, which increases with the increase of vehicle speed, especially when the fuel valve or throttle valve is closed, and the rear axle swings seriously.

③攪拌車(chē)高速（接近60km/h）運行，油門(mén)縮回時(shí)，后軸有異響，后軸有晃動(dòng)。

③ When the mixer truck runs at high speed (nearly 60km/h) and the accelerator retracts, the rear axle makes abnormal noise and shakes.

后軸的異響故障不僅是噪聲侵襲人、齒輪等零件磨損加劇，而且嚴重影響車(chē)輛的正常行駛。因此，行車(chē)中應注意檢查和傾聽(tīng)，及時(shí)排除故障。

The abnormal sound fault of the rear axle is not only the noise attacks people, the wear of gear and other parts is aggravated, but also seriously affects the normal driving of the vehicle. Therefore, pay attention to inspection and listening during driving to eliminate the fault in time.

行駛中如有持續的異響，應停車(chē)檢查。如果用手觸摸后橋殼，如果發(fā)熱量不大，齒隙過(guò)??；如果發(fā)熱嚴重，一般是缺油，應檢查油位。根據情況調整齒隙或加潤滑油。行駛中如有撞擊聲，齒隙一般過(guò)大。

If there is continuous abnormal noise during driving, stop the vehicle for inspection. If the rear axle housing is touched by hand, if the heat is not large, the backlash is too small; If the heating is serious, it is generally lack of oil, and the oil level should be checked. Adjust the backlash or add lubricating oil according to the situation. If there is an impact sound during driving, the backlash is generally too large.

自動(dòng)上料攪拌車(chē)車(chē)速越高，聲音越大，滑行時(shí)聲音減小或消失，一般是由于軸承磨損或齒隙異常引起的。急變速或上坡時(shí)有異響，說(shuō)明齒隙過(guò)大。更換軸承或根據情況調整齒隙。

The higher the speed of the automatic loading mixer truck is, the louder the sound is. The sound decreases or disappears when sliding. It is generally caused by bearing wear or abnormal backlash. There is abnormal noise during rapid speed change or uphill, which indicates that the backlash is too large. Replace the bearing or adjust the backlash as appropriate.

此外攪拌車(chē)有時(shí)候會(huì )在轉彎時(shí)會(huì )有異響，即使低速直線(xiàn)行駛時(shí)也會(huì )有異響，但隨著(zhù)車(chē)速的提高，異響會(huì )消失，主要原因是變速器行星齒輪嚙合間隙過(guò)大，或半軸齒輪和鍵槽磨損。如果在行駛過(guò)程中后軸突然發(fā)出噪音，大部分是輪齒損壞，應立即停車(chē)檢查，否則會(huì )嚴重損壞齒輪。

In addition, the mixer sometimes makes abnormal noise when turning, even when driving at low speed in a straight line. However, with the increase of vehicle speed, the abnormal noise will disappear. The main reason is that the meshing clearance of the transmission planetary gear is too large, or the half shaft gear and keyway are worn. If the rear axle makes a sudden noise during driving, most of which is tooth damage, stop the vehicle immediately for inspection, otherwise the gear will be seriously damaged.

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