全自動上料攪拌車發動機早期損壞的原因有哪些？ - 行業資訊_自動混凝土攪拌機知識-山東山汽工程機械（集團）有限公司

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聯系人：劉老師

電話：400-879-1999

公司：山東山汽工程機械（集團）有限公司

地址：山東省萊州市206國道與308省道交叉口東南50米

全自動上料攪拌車發動機早期損壞的原因有哪些？

所屬分類：行業資訊發布時間：2022-03-23 來源：http://www.shhuanlv.com/ 瀏覽量：18

1、全自動上料攪拌車的維修數據應用不當在自上料攪拌車維修中不能科學的選擇維修數據是造成機件早期損壞的重要原因，比如氣門與氣門座接觸面的寬度，規定進氣門為1-2.2mm，排氣門為1.5-2.5mm，但在實際維修當中，很多人認為寬一點比窄一點要好，習慣選用上限或接近上限值，因為剛修好的車氣門工作面寬度就已經接近使用限度了，再比如氣門腳間隙，一般車輛規定為0.2-0.25mm，但在維護調整中也會認為間隙大一點比小一點好，因此，超上限使用，實際上間隙過大，不但降低發動機功率，還會出現敲擊聲而早期損壞。

1. Improper application of the maintenance data of the fully automatic charging mixer is an important reason for the early damage of the machine parts. For example, the width of the contact surface between the valve and the valve seat is 1-2.2mm, and the exhaust valve is 1.5-2.5mm. However, in the actual maintenance, many people think that a wider one is better than a narrower one, and are used to selecting the upper limit or close to the upper limit, Because the width of the valve working surface of the newly repaired vehicle is close to the use limit. For example, the valve foot clearance is generally 0.2-0.25mm, but it will also be considered that a larger clearance is better than a smaller clearance in maintenance and adjustment. Therefore, if it is used beyond the upper limit, in fact, the clearance is too large, which will not only reduce the engine power, but also cause knocking sound and early damage.

2、全自動上料攪拌車氣門的光磨在自上料攪拌車的維修中，如果氣門出現燒蝕、麻點及凹陷時，均應進行光磨，一般是在光磨機上進行，作業時需要注意四個問題：一是保證氣門頭與桿部同心，否則應先校直。二是光磨輛在能磨出完整的錐面的前提下是越小越好。三是盡量提高表面光潔度。四是氣門桿端部凹陷應予以磨平。

2. The smooth grinding of the valve of the full-automatic feeding mixer truck in the maintenance of the self feeding mixer truck, if the valve appears ablation, pitting and depression, it should be polished, which is generally carried out on the smooth mill. Four problems need to be paid attention to during operation: first, ensure that the valve head is concentric with the rod, otherwise it should be straightened first. Second, on the premise that the smooth grinding vehicle can grind a complete cone, the smaller the better. Third, try to improve the surface finish. Fourth, the depression at the end of the valve stem should be ground flat.

3、全自動上料攪拌車氣門導管的鉸銷氣門桿與氣門導管配合間隙是決定氣門導管使用壽命的關鍵。因此當更換氣門導管時，鉸銷時應嚴格掌握好配合間隙，使用各攪拌車車型規定間隙的下限，延長使用壽命。

3. The fit clearance between the hinge pin valve stem and the valve guide of the valve guide of the automatic feeding mixer is the key to determine the service life of the valve guide. Therefore, when replacing the valve guide, the matching clearance should be strictly controlled during hinge pin, and the lower limit of the clearance specified by each mixer model should be used to prolong the service life.

4、全自動上料攪拌車氣門的研磨自上料攪拌車氣門的研磨分為兩種情況：一是氣門與氣門座只有輕微麻點，不需要光磨和鉸銷時的研磨。二是氣門與氣門座均經過光磨和鉸銷后的研磨，前者先用足金鋼砂研磨，將麻點研磨掉后，再用細金剛砂研磨，后涂上機油研磨，直至密封符合要求，寬度符合規定為止，后者只有密封性達不到要求時才進行研磨，但操作時一定要注意，不要過分用力，嚴禁將氣門上下敲打，否則將出現凹形砂痕，影響維修質量。

4. The grinding of the valve of the fully automatic feeding mixer can be divided into two situations: one is that there are only slight pits between the valve and the valve seat, and there is no need for light grinding and grinding during hinge pin. Second, the valve and valve seat are ground after smooth grinding and hinge pin. The former is ground with full gold steel sand, the pitting is ground off, then ground with fine emery, and then coated with oil for grinding until the sealing meets the requirements and the width meets the regulations. The latter is ground only when the sealing fails to meet the requirements, but it must be noted during operation that excessive force is not allowed to knock the valve up and down, otherwise concave sand marks will appear, Affect the maintenance quality.

以上就是為大家介紹的有關自動混凝土攪拌機的詳細介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯系我們.我們將以專業的態度,為您提供服務http://www.shhuanlv.com

The above is a detailed introduction to the automatic concrete mixer. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.shhuanlv.com

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