自動混凝土攪拌機(jī)是一種工作強(qiáng)度大、可靠性要求高的工程機(jī)械。為保證其的工作狀態(tài)，日常維護(hù)尤為重要。但是長期使用后，發(fā)動機(jī)可能會損壞，那么在什么情況下應(yīng)該對發(fā)動機(jī)進(jìn)行大修呢？下面將為您詳細(xì)介紹。

Automatic concrete mixer is a kind of engineering machinery with high working intensity and high reliability requirements. In order to ensure its efficient working state, daily maintenance is particularly important. But after long-term use, the engine may be damaged, so under what circumstances should the engine be overhauled? The following will give you a detailed introduction.

1、筒體內(nèi)徑磨損過大，圓度偏差0.04-0.06mm，圓柱度偏差0.08-0.12mm（一般測量筒體下半部與上半部之差）。對于多缸發(fā)動機(jī)，圓度和圓柱度偏差以磨損嚴(yán)重的氣缸為準(zhǔn)。

1. The inner diameter of the cylinder is excessively worn, with roundness deviation of 0.04-0.06mm and cylindricity deviation of 0.08-0.12mm (generally measure the difference between the lower half and the upper half of the cylinder). For multi cylinder engine, roundness and cylindricity deviation shall be subject to the cylinder with serious wear.

2、油量明顯增加，油壓下降，排氣管冒黑藍(lán)煙。

2. The oil volume increases significantly, the oil pressure decreases, and the exhaust pipe emits black and blue smoke.

3、混凝土運(yùn)輸攪拌機(jī)的功率顯著降低。其大馬力僅為額定功率的60%左右（不包括高海拔造成的功率下降），氣缸壓力低于標(biāo)準(zhǔn)壓力的65%。

3. The power of concrete transportation mixer is significantly reduced. Its high horsepower is only about 60% of the rated power (excluding the power reduction caused by high altitude), and the cylinder pressure is 65% lower than the standard pressure.

4、曲軸磨損過大，曲軸各軸頸磨損后的圓度和圓柱度偏差超過使用極限，或不圓度和錐度限制在0.10mm以內(nèi)。

4. The crankshaft is excessively worn, and the roundness and cylindricity deviation of each crankshaft journal after wear exceeds the service limit, or the out of roundness and taper are limited within 0.10mm.

5、發(fā)動機(jī)啟動或停止時，水溫在50^-60℃的條件下不能順利啟動。

5. When the engine starts or stops, the water temperature cannot start smoothly under the condition of 50 ^-60 ℃.

6、自動混凝土攪拌機(jī)的發(fā)動機(jī)有異響或運(yùn)轉(zhuǎn)異常。發(fā)動機(jī)在熱態(tài)運(yùn)轉(zhuǎn)時，氣缸內(nèi)有響聲（活塞敲擊聲），主軸承或連桿軸承有嚴(yán)重的振動或敲擊聲。

6. The engine of the automatic concrete mixer has abnormal noise or abnormal operation. When the engine is running in hot state, there is a noise (piston knocking) in the cylinder, and the main bearing or connecting rod bearing has serious vibration or knocking.

以上是混凝土運(yùn)輸攪拌車發(fā)動機(jī)檢修的條件，此外，在有可能結(jié)冰的環(huán)境中使用時，必須將供水系統(tǒng)排空并儲存，以防止管道結(jié)冰和開裂；經(jīng)常檢查系統(tǒng)的密封性，對關(guān)鍵部位的管道進(jìn)行密封。更多內(nèi)容就來我們網(wǎng)站http://ffyhk.cn獲取信息吧。

The above conditions are for the maintenance of the engine of the concrete transportation mixer. In addition, when it is used in an environment that may be frozen, the water supply system must be emptied and stored to prevent the pipeline from freezing and cracking; Regularly check the tightness of the system and seal the pipes at key parts. Come to our website for more information http://ffyhk.cn Get information.