Sinotruk SITRAK： (1) the purpose of the concrete mixer truck. Modern road construction and major building projects since then used in order to guarantee the quality of the concrete, improve work efficiency, reduce environmental pollution, standing specialized concrete mixing plant (station), the use of special equipment for the production of concrete plant concrete mixing plant; unloading the car shipped to the construction site, direct casting. However, if the the concrete transport distance and transport time is a little longer, the cement will precipitate with water separator, undermine the uniformity of concrete; same time, the deposition is difficult to remove the cement at the bottom of the compartment, increased cargo damage, reduce dump truck the actual shipment of quality. Concrete mixer overcome this shortcoming General Dump Truck transport concrete, to ensure the quality of the concrete pouring. Concrete mixer during transport or on the construction site, keep the shipment of concrete slowly stirring the Special Purpose Vehicle. So, also known as concrete mixer truck.
(2) the classification of the concrete mixer. The water content of the shipment of concrete concrete mixer, the wet material type, the dry material type and semi-dry material three mixer truck. Most of the wet material type concrete mixer domestic production of concrete mixing plant (station) or mixed according to the ratio of aggregate (sand, gravel), cement and water available for shipment during transport, and constantly wet material slowly stirring, to prevent the initial and segregation of concrete during transport. However, the concrete from production to the pouring time is generally not exceed 1.5h, in order to avoid concrete setting. So, in the case of more long-range transport, requires the use of both dry and semi-dry material mixer truck to transport. The dry material type mixer truck can be loaded directly into the car's stirring barrel ratio of the stem-like aggregate and cement, dry material in the barrel during transport stirring when the vehicle is going to reach the construction site or add water at the construction site complete Concrete stirring. Semi-dry material the type mixer truck shipment concrete aggregate and cement is formulated according to the ratio, and contains a certain amount of water, but the water content to reach the casting requirements need to be in the vehicle to reach the construction site or in the construction site add water and stir.
Concrete mixer stirring drive form their sources of power points, a dedicated internal combustion engine - mechanical transmission, automotive engine - hydraulic transmission. Former structure is relatively simple, the mixing tube speed easy to control, lower costs, but the quality and volume layout inconvenience; latter's high degree of standardization, convenient layout, quality of light, can be fitted with a larger mixing tube, but its higher cost. Concrete mixer with hydraulic technology development and the improvement of the quality of hydraulic components, stirring drive more and more car engine - hydraulic transmission drive type.