In the long-term work of the self loading mixer, the phenomenon of concrete congealing on the automatic feeding mixer and blades often occurs. If it is not cleaned in time, it will not only easily cause the segregation of the loaded concrete, but also cause the vehicle overload due to insufficient tank volume, resulting in the failure of hydraulic pump and hydraulic motor. However, due to the particularity of concrete materials, glued cans can only be cleaned manually with air pick, which takes time and labor, and seriously affects the normal attendance of vehicles.

經(jīng)過實(shí)踐和分析，我們認(rèn)為自動(dòng)上料攪拌車粘罐原因可以分為兩大類：即設(shè)計(jì)不合理和使用不當(dāng)，主要有以下幾種形式：

Through practice and analysis, we think that the reasons for sticking can be divided into two categories: unreasonable design and improper use

（1）卸料殘余率和葉片設(shè)計(jì)的不合理。從攪拌筒的內(nèi)部結(jié)構(gòu)看，自動(dòng)上料攪拌車的拌筒是依靠回轉(zhuǎn)的筒體帶動(dòng)其中的兩條螺旋葉片所產(chǎn)生的螺旋運(yùn)動(dòng)，使混凝土獲得既有“切向”又有“軸向”的復(fù)合運(yùn)動(dòng)，從而使攪拌筒具有攪拌和卸料的功能，因此形成這一螺旋運(yùn)動(dòng)的有關(guān)因素，諸如螺旋葉片的曲線參數(shù)，攪拌筒的幾何形狀和尺寸等對(duì)攪拌車的卸料殘余率都有重要影響。而過大的卸料殘余率意味著攪拌車在卸料結(jié)束后在自動(dòng)上料攪拌車?yán)飼?huì)有更多的余料，因而更有可能因日積月累在攪拌罐中粘料。目前大多數(shù)廠家采用的是等角對(duì)數(shù)螺旋線葉片，在卸料殘余率上還有很大的改進(jìn)空間。

(1) The discharge residual rate and blade design are unreasonable. From the internal structure of the mixing drum, the mixing drum of the automatic feeding mixing truck relies on the rotating cylinder to drive the spiral motion generated by two spiral blades, which makes the concrete obtain the compound movement of both "tangential" and "axial", so that the mixing drum has the function of mixing and discharging. Therefore, the factors related to the formation of this spiral movement, such as the curve parameters of spiral blades The number, geometry and size of mixing drum have important influence on the discharge residual rate of mixer truck. However, the excessive discharge residual rate means that there will be more residual materials in the automatic feeding mixer truck after unloading, so it is more likely to stick materials in the mixing tank over time. At present, most manufacturers use equiangular logarithmic spiral blades, and there is still a lot of room for improvement in the discharge residual rate.

（2）自上料攪拌車工作環(huán)境溫度過高。夏季在南方地區(qū)白天中午前后，環(huán)境溫度經(jīng)常超過30℃，在這種情況下運(yùn)輸混凝土，將會(huì)由于混凝土坍落度損失快以及罐體周圍溫度相對(duì)中心更高，因而混凝土更容易粘罐。

(2) The working environment temperature of the mixer is too high. In summer, the ambient temperature often exceeds 30 ℃ around noon in the south of China. In this case, the concrete is more likely to stick to the tank due to the rapid loss of concrete slump and the higher temperature around the tank.

（3）運(yùn)輸距離過長。隨著城市化的進(jìn)程及城市規(guī)劃的要求，越來越多的攪拌站被要求遷到郊區(qū)和郊縣，與市區(qū)的距離越來越遠(yuǎn)，而由于混凝土這一產(chǎn)品的特殊性，任何預(yù)拌混凝土在未添加緩凝劑的情況下，都在1h左右進(jìn)入初凝狀態(tài)，如果這時(shí)才進(jìn)行混凝土澆注施工，不但影響混凝土的工程質(zhì)量，而且因混凝土失去流動(dòng)性，易在攪拌筒及葉片上凝結(jié)，導(dǎo)致粘罐，嚴(yán)重時(shí)甚整車混凝土粘在罐內(nèi)及造成液壓設(shè)備的損壞，所以自動(dòng)上料攪拌車運(yùn)送預(yù)拌混凝土有其時(shí)間控制的輸送半徑，一般應(yīng)控制在1h以內(nèi)。

(3) The transportation distance is too long. With the process of urbanization and the requirements of urban planning, more and more mixing plants are required to move to the suburbs and suburban counties, and the distance from the urban area is getting more and more far. Due to the particularity of concrete, any ready mixed concrete will enter the initial setting state within 1h without adding retarder. If the concrete pouring construction is carried out at this time, it will not only affect the concrete quality Engineering quality, and because of the loss of fluidity of concrete, it is easy to coagulate on the mixing drum and blades, resulting in sticking to the tank, and even the whole vehicle concrete sticking in the tank and causing damage to the hydraulic equipment, so the automatic loading mixer truck has its time controlled conveying half diameter for transporting ready mixed concrete, which should be controlled within 1 h generally.

（4）使用維護(hù)不當(dāng)。自動(dòng)上料攪拌車駕駛員在攪拌車卸料完畢后未及時(shí)清理清洗攪拌罐內(nèi)及葉片上殘留的混凝土，在攪拌車回站過程中不轉(zhuǎn)動(dòng)攪拌罐，殘留的混凝土干燥后凝固在拌筒及葉片上，以后就會(huì)越聚越多，形成粘罐現(xiàn)象。

(4) Improper use and maintenance. The driver of the automatic loading mixer does not clean and clean the residual concrete in the mixing tank and on the blades in time after the unloading of the mixer truck, and does not rotate the mixing tank during the return process of the mixer truck. The residual concrete will solidify on the mixing drum and blade after drying, which will accumulate more and more and form the phenomenon of sticking to the tank.

以上就是自上料攪拌車 為大家介紹額相關(guān)知識(shí)，更多的詳細(xì)內(nèi)容，可關(guān)注公司網(wǎng)站：http://kitchinit.com

The above is the introduction of relevant knowledge from the charging mixer. For more details, please pay attention to the company's website: http://kitchinit.com