搅拌车底部在车送过程中被划伤或打结
混凝土自上料搅拌车的应用地提高了日常施工的施工效率，但有时在车送过程中可能会出现其他现象，例如，由于各种原因可能导致打底或打结。 如何这些问题？ 现在让我们具体介绍它们。
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.
在搅拌车的运行过程中，由于施工条件或天气原因，可能会导致混凝土自上料搅拌车底部在车送过程中被划伤或打结。这种现象有很多原因。 简单来说，主要有以下几个原因：
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。商业污染的混凝土容易刮伤或打结（粘锅），所以要注意生产过程中的出血量。
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产也是一个须注意的问题。
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剂的商品混凝土易于打底，因此在制作商品混凝土时遵循的规则非常重要。
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.
商品混凝土外加剂具有较高的减水率和较高的出血率。 保水性差，增稠和夹带不良的商品混凝土易于打底或打结。 应该注意这些。由于上述原因，为了避免混凝土自上料搅拌车车送商品混凝土具有底部或结的现象，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。减少每个单位的用水量。
1。 Reduce water consumption per unit.
2。增加砂率。
2。 Increase sand ratio.
3。加入适量的混合物，如粉煤灰，以减少水泥的用量。
3。 Add an appropriate amount of mixture, such as fly ash, to reduce the amount of cement.
4。减少商品混凝土外加剂的用量。
4。 Reduce the dosage of commercial concrete admixtures.
5。增加商品混凝土外加剂的通风，增稠和保水功能。
5。 Increase the ventilation, thickening and water retention functions of commercial concrete admixtures.
此外混凝土自上料搅拌车厂家要提醒大家，在搅拌车车的液压系统中，A和B端口分别连接到两个泵送缸的入口和出口腔室，并且主泵交替地将来自A和B端口的高压油输送到两个泵送泵。 泵车泵缸有高压油进入杆腔，当活塞杆缩回时，右泵缸没有杆腔压力油。 高压油管在没有杆腔的情况下进入左泵缸，并驱动左泵缸活塞杆延伸。
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.
当接近开关检测到右泵缸活塞杆就位时，控制系统发出换向信号。 在主泵接收到反向信号之后，左泵送缸连接有杆室压力油以缩回左泵缸活塞杆。 左泵缸没有杆腔压力油，通过高压油管进入右泵缸无杆室，驱动右泵缸活塞杆伸出。 两个泵送缸交替运行以完成搅拌车送工作。
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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