The mixer truck is a special truck for transporting concrete for construction. It is generally used on the construction site. Because of the particularity of concrete, the mixing drum will always carry out mixing during the transportation of the mixer truck to avoid concrete solidification failure. After transportation, the interior must be washed with water in time, so as to ensure the cleanness in the drum and the occupation of space by residual cement.

混凝土搅拌车是由汽车底盘与定制搅拌装置系统来组成的，其主要有注水系统、装载进料出料系统、取力器、卸料槽等系统组成，搅拌车工作原理是通过取力器将车底盘的动力取出，依次传输到液压变量系统，再把机械能变化为液压能再传输给定量马达，然后在由马达再传动到减速机，由减速机终驱动搅拌装置，从对混凝土进行搅拌。

The concrete mixer truck is composed of an automobile chassis and a customized mixing device system, which is mainly composed of water injection system, loading, feeding and discharging system, power take-off, unloading tank and other systems. The working principle of the mixer truck is to take out the power of the chassis through the power take-off, successively transmit it to the hydraulic variable system, change the mechanical energy into hydraulic energy, and then transmit it to the quantitative motor, Then, the motor drives it to the reducer, and the reducer finally drives the mixing device to mix the concrete.

混凝土搅拌车还分为湿料式，干料式，半干料式，这是按含水量来分的。

Concrete mixer truck is also divided into wet material type, dry material type and semi dry material type, which is divided according to water content.

搅拌车必须培训后在进行操作，这样才能的工作。

The mixer truck must be operated after training, so as to work efficiently.

关于搅拌车的维护，特别是驱动装置，它主要是由取力器、液压马达、操纵阀、万向轴、液压泵、液压油箱及冷却装置组成，驱动装置部分有故障会导致车内的混凝土报废，甚因此造成车辆报废，我们必须重视驱动装置的维护，如万向转动（保证润滑油常有），液压油的清洁（如有泥沙进入，必须立即更换），液压油冷却装置的正常（保证散热器运转正常）。

As for the maintenance of mixer truck, especially the driving device, it is mainly composed of power take-off, hydraulic motor, control valve, cardan shaft, hydraulic pump, hydraulic oil tank and cooling device. The failure of the driving device will lead to the scrapping of concrete in the truck, and even the scrapping of the vehicle. We must pay attention to the maintenance of the driving device, such as Cardan rotation (to ensure the constant availability of lubricating oil), Cleaning of hydraulic oil (if sediment enters, it must be replaced immediately) and normal operation of hydraulic oil cooling device (ensure normal operation of radiator).