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攪拌車(chē)底部在車(chē)送過(guò)程中被劃傷或打結(jié)
混凝土自上料攪拌車(chē)的應(yīng)用地提高了日常施工的施工效率，但有時(shí)在車(chē)送過(guò)程中可能會(huì)出現(xiàn)其他現(xiàn)象，例如，由于各種原因可能導(dǎo)致打底或打結(jié)。 如何這些問(wèn)題？ 現(xiàn)在讓我們具體介紹它們。
The application of concrete self loading mixer improves the construction efficiency of daily construction, but sometimes other phenomena may occur in the process of vehicle delivery, such as bottoming or knotting due to various reasons. How to solve these problems? Now let's introduce them in detail.
在攪拌車(chē)的運(yùn)行過(guò)程中，由于施工條件或天氣原因，可能會(huì)導(dǎo)致混凝土自上料攪拌車(chē)底部在車(chē)送過(guò)程中被劃傷或打結(jié)。這種現(xiàn)象有很多原因。 簡(jiǎn)單來(lái)說(shuō)，主要有以下幾個(gè)原因：
During the operation of the mixer truck, due to construction conditions or weather reasons, the bottom of the concrete mixer truck may be scratched or knotted during the delivery process. There are many reasons for this phenomenon. In short, there are several reasons:
1。商業(yè)污染的混凝土容易刮傷或打結(jié)（粘鍋），所以要注意生產(chǎn)過(guò)程中的出血量。
1。 Commercial contaminated concrete is easy to scratch or knot (stick to the pot), so pay attention to the amount of bleeding in the production process.
2。含有大量水泥的商品混凝土易于打底。 因此，商品混凝土水泥的生產(chǎn)也是一個(gè)須注意的問(wèn)題。
2。 Commercial concrete containing a lot of cement is easy to be primed. Therefore, the production of commercial concrete cement is also a problem that should be paid attention to.
3。大量商品混凝土外加劑的商品混凝土易于打底，因此在制作商品混凝土?xí)r遵循的規(guī)則非常重要。
3。 Commercial concrete with a large number of commercial concrete admixtures is easy to be primed, so the rules to be followed in the production of commercial concrete are very important.
商品混凝土外加劑具有較高的減水率和較高的出血率。 保水性差，增稠和夾帶不良的商品混凝土易于打底或打結(jié)。 應(yīng)該注意這些。由于上述原因，為了避免混凝土自上料攪拌車(chē)車(chē)送商品混凝土具有底部或結(jié)的現(xiàn)象，可以采用以下方案：
Commercial concrete admixtures have higher water reduction rate and higher bleeding rate. Commercial concrete with poor water retention, thickening and entrainment is easy to be bottomed or knotted. You should pay attention to these. Due to the above reasons, the following solutions can be adopted to avoid the bottom or knot of commercial concrete delivered from the loading mixer truck:
1。減少每個(gè)單位的用水量。
1。 Reduce water consumption per unit.
2。增加砂率。
2。 Increase sand ratio.
3。加入適量的混合物，如粉煤灰，以減少水泥的用量。
3。 Add an appropriate amount of mixture, such as fly ash, to reduce the amount of cement.
4。減少商品混凝土外加劑的用量。
4。 Reduce the dosage of commercial concrete admixtures.
5。增加商品混凝土外加劑的通風(fēng)，增稠和保水功能。
5。 Increase the ventilation, thickening and water retention functions of commercial concrete admixtures.
此外混凝土自上料攪拌車(chē)廠家要提醒大家，在攪拌車(chē)車(chē)的液壓系統(tǒng)中，A和B端口分別連接到兩個(gè)泵送缸的入口和出口腔室，并且主泵交替地將來(lái)自A和B端口的高壓油輸送到兩個(gè)泵送泵。 泵車(chē)泵缸有高壓油進(jìn)入桿腔，當(dāng)活塞桿縮回時(shí)，右泵缸沒(méi)有桿腔壓力油。 高壓油管在沒(méi)有桿腔的情況下進(jìn)入左泵缸，并驅(qū)動(dòng)左泵缸活塞桿延伸。
In addition, the concrete self loading mixer truck manufacturer should remind everyone that in the hydraulic system of the mixer truck, ports a and B are respectively connected to the inlet and outlet chambers of the two pumping cylinders, and the main pump alternately transmits the high-pressure oil from ports a and B to the two pumping pumps. There is high-pressure oil in the pump cylinder of the pump truck entering the rod cavity. When the piston rod is retracted, there is no pressure oil in the rod cavity in the right pump cylinder. The high-pressure oil pipe enters the left pump cylinder without rod cavity and drives the piston rod of the left pump cylinder to extend.
當(dāng)接近開(kāi)關(guān)檢測(cè)到右泵缸活塞桿就位時(shí)，控制系統(tǒng)發(fā)出換向信號(hào)。 在主泵接收到反向信號(hào)之后，左泵送缸連接有桿室壓力油以縮回左泵缸活塞桿。 左泵缸沒(méi)有桿腔壓力油，通過(guò)高壓油管進(jìn)入右泵缸無(wú)桿室，驅(qū)動(dòng)右泵缸活塞桿伸出。 兩個(gè)泵送缸交替運(yùn)行以完成攪拌車(chē)送工作。
When the proximity switch detects that the piston rod of the right pump cylinder is in place, the control system sends a reversing signal. After the main pump receives the reverse signal, the left pump cylinder is connected with rod chamber pressure oil to retract the piston rod of the left pump cylinder. There is no pressure oil in the rod chamber of the left pump cylinder, which enters the rod free chamber of the right pump cylinder through the high-pressure oil pipe to drive the piston rod of the right pump cylinder to extend. The two pumping cylinders operate alternately to complete the delivery of the mixer truck.
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