混凝土攪拌車作為大型施工設(shè)備，經(jīng)常性的高強(qiáng)度工作，所以有時(shí)候會(huì)出現(xiàn)各種問(wèn)題，需要進(jìn)行維修。那么混凝土攪拌車發(fā)動(dòng)機(jī)什么時(shí)候大修呢？
Concrete mixer as a large construction equipment, regular high-intensity work, so sometimes there will be a variety of problems, need to be repaired. So when will the concrete mixer engine be overhauled?
氣缸內(nèi)徑磨損過(guò)大，圓度偏差差為0.04-0.06mm，圓柱度偏差差為0.08-0.12mm（一般按氣缸下半部分和上半部分差的比值測(cè)量）。對(duì)于多缸發(fā)動(dòng)機(jī)，圓度和圓柱度偏差差基于磨損較大的氣缸油量顯著增加，油壓降低，排氣管排放黑煙和藍(lán)煙。
Cylinder inner diameter wear is too large, the roundness deviation is 0.04-0.06mm, cylindricity deviation is 0.08-0.12mm （generally measured by the ratio of the difference between the lower part and the upper part of the cylinder）。 For multi-cylinder engines, the difference in roundness and cylindricity is based on the significant increase in cylinder oil volume, decrease in oil pressure, and exhaust pipe emission of black and blue smoke
混凝土攪拌車的功率顯著降低，其峰值高馬力僅為額定功率的60%左右（不包括高空引起的功率下降），氣缸壓力小于標(biāo)準(zhǔn)壓力的65%曲軸過(guò)度磨損，曲軸磨損后各軸頸的圓度和圓柱度差超過(guò)使用極限，或失圓度和錐度限制在0.10mm。水溫為50^-60℃時(shí)，發(fā)動(dòng)機(jī)啟動(dòng)或停止時(shí)無(wú)法平穩(wěn)啟動(dòng)。
The power of concrete mixer truck is significantly reduced, its peak high horsepower is only about 60% of the rated power （excluding the power drop caused by high altitude）， the cylinder pressure is less than 65% of the standard pressure, and the crankshaft is excessively worn. After the crankshaft is worn, the roundness and cylindricity difference of each journal exceeds the service limit, or the roundness and taper are limited to 0.10mm. When the water temperature is 50^-60℃， the engine cannot start smoothly when starting or stopping
混凝土攪拌車廠家認(rèn)為發(fā)動(dòng)機(jī)發(fā)出異常噪音或運(yùn)轉(zhuǎn)異常的時(shí)候要進(jìn)行大修。發(fā)動(dòng)機(jī)熱態(tài)運(yùn)轉(zhuǎn)時(shí)，氣缸（活塞敲缸）有噪音，主軸承或連桿軸承有嚴(yán)重振動(dòng)或敲擊聲。另外在有結(jié)冰可能的環(huán)境中使用，供水系統(tǒng)必須排空存水，防止管路凍裂；經(jīng)常檢查系統(tǒng)的密封性，關(guān)鍵部位涂抹管路用密封膠。
Concrete mixer truck manufacturers think that the engine is abnormal noise or abnormal operation of the time to carry out overhaul. When the engine is running in hot state, the cylinder （piston knocking cylinder） has noise, and the main bearing or connecting rod bearing has serious vibration or knocking sound. In addition, the water supply system must be emptied and stored in the environment where ice may be used to prevent pipeline frostbite; Check the tightness of the system regularly and apply sealant for pipeline in key parts.
因此要保證混凝土攪拌車的工作狀態(tài)，日常保養(yǎng)尤為重要，使用前后的檢查工作必不可少，更多內(nèi)容就來(lái)我們網(wǎng)站www.qirongguanjia.cn咨詢吧！
Therefore, in order to ensure the efficient working state of concrete mixer, daily maintenance is particularly important, and the inspection work before and after use is essential. More content will come to our website www.qirongguanjia.cn for consultation!
