Ordinary mixing tank is a special truck used to transport construction concrete; Due to the shape of the self feeding mixer, it is also often called Tianluo truck. This kind of truck is equipped with cylindrical mixing drum to carry the mixed concrete.
The water content of concrete transported by concrete mixing tank can be divided into wet material type, dry material type and semi dry material type. Wet material type is mostly used in China. It can transport concrete produced by mixing plant (station) or aggregate (sand, stone), cement and water mixed according to proportion. During transportation, wet material is continuously mixed slowly to prevent initial setting and segregation of concrete during transportation. However, the time from production to pouring should not exceed 1.5h to avoid concrete setting. Therefore, in the case of longer distance transportation, the dry and semi dry material mixing truck should be used for transportation.
The dry material mixer truck can directly load the dry aggregate and cement into the mixing drum of the truck according to the proportion. During the transportation, the dry material in the drum will be mixed. When the self loading mixer truck will arrive at the construction site or add water to the construction site to complete the concrete mixing.
The aggregate and cement in the concrete transported by the semi dry material mixing truck are also prepared according to the proportion, and contain a lot of water, but the content of water can not meet the pouring requirements. The self loading mixing truck will reach the construction site or add water in the construction site. The self loading mixing truck is composed of car bottom plate, mixing drum, feeding and discharging device, water supply system and hydraulic transmission system.
The main function of the mixing drum is to store and mix concrete. It is installed in the rear half of the car frame and is mainly composed of the drum, connecting flange, raceway and mixing blade. The external structure of the mixing drum is mostly cone at both ends and cylinder in the middle, and its shape is similar to olive. The concrete storage tank is made of high-quality wear-resistant steel sheet. In order to automatically load and unload concrete, the inner wall of the tank is welded with spiral blades of special shape.