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.

混凝土攪拌罐所裝運的混凝土含水量來分，有濕料式、干料式和半干料式三種攪拌運輸。國內大多采用濕料式的，它可裝運由攪拌廠（站）生產的混凝土或按配比混合的骨料（砂、石子）、水泥和水，在運輸過程中，不斷對濕料慢慢攪拌，防止混凝土在運輸過程中初凝和離析。但是，混凝土從生產到澆注的時間一般不能超過1.5h，以免混凝土凝結。所以，在更遠距離運輸的情況下，需采用干料和半干料攪拌運輸車來運送。

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.

干料式攪拌運輸車可按配比將干狀骨料和水泥直接裝入該車的攪拌筒內，在運輸過程中筒內的干料進行攪拌，當自上料攪拌車將要到達施工場地或在施工場地再加水完成混凝土的攪拌。

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.

半干料式攪拌運輸車所裝運的混凝土中的骨料和水泥也是按配比配制的，并含有的水，但水的含量達不到澆注要求，需在自上料攪拌車將要達到施工場地或在施工場地加水自上料攪拌車有汽車底盤、攪拌筒、進出料裝置、供水系統和液壓傳動系統等組成。

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.

攪拌筒的主要作用是儲存和攪拌混凝土，安裝在汽車車架的后半部，主要由筒體、連接法蘭、滾道及攪拌葉片組成。攪拌筒的外部結構大多是兩端錐體、中間為圓柱體，其外形酷似橄欖。混凝土儲罐由優質耐磨薄鋼板制成，為了能夠自動裝、卸混凝土，其內壁焊有特殊形狀的螺旋葉片。

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.