Trucks used to transport concrete for construction; Because of its shape, it is often called a snail cart or olive cart. These trucks are equipped with cylindrical mixing drums to carry mixed concrete. During transportation, the mixing drum will always be kept rotating so that the concrete carried will not solidify. After the concrete is transported, the inside of the mixing drum is usually washed with water to prevent the residual concrete from hardening and occupying space, so that the volume of the mixing drum becomes smaller and smaller.

混凝土搅拌运输车由汽车底盘和混凝土搅拌运输装置组成。我国生产的混凝土搅拌运输车的底盘多采用整车生产厂家提供的二类通用底盘。其机构主要包括取力器、搅拌筒前后支架、减速机、液压系统、搅拌筒、机构、清洗系统等。工作原理是，通过取力装置将汽车底盘的动力取出，并驱动液压系统的变量泵，把机械能转化为液压能传给定量马达，马达再驱动减速机，由减速机驱动搅拌装置，对混凝土进行搅拌。

The concrete mixing truck is composed of a car chassis and a concrete mixing transport device. The chassis of concrete mixer trucks produced in China mostly adopts the Class II general chassis provided by the vehicle manufacturer. Its mechanism mainly includes power take-off, front and rear support of mixing drum, reducer, hydraulic system, mixing drum, mechanism, cleaning system, etc. The working principle is to take out the power of the car chassis through the power take-off device and drive the variable pump of the hydraulic system to convert the mechanical energy into hydraulic energy and transmit it to the quantitative motor. The motor drives the reducer, which drives the mixing device to mix the concrete.

采用主车发动机取力方式。取力装置的作用是通过取力开关将发动机动力取出，经液压系统驱动搅拌筒，搅拌筒在进料和运输过程中正向旋转，以利于进料和对混凝土进行搅拌，在出料时反向旋转，在工作终结后切断与发动机的动力联接。

The main vehicle engine power take-off mode is adopted. The function of the power take-off device is to take out the engine power through the power take-off switch, and drive the mixing drum through the hydraulic system. The mixing drum rotates in a positive direction during the feeding and transportation process to facilitate the feeding and mixing of concrete. It rotates in a reverse direction when discharging, and cuts off the power connection with the engine after the end of the work.

搅拌装置主要由搅拌筒及其辅助支撑部件组成。搅拌筒是混凝土的装载容器，转动时混凝土沿叶片的螺旋方向运动，在不断的提升和翻动过程中受到混合和搅拌。在进料及运输过程中，搅拌筒正转，混凝土沿叶片向里运动，出料时，搅拌筒反转，混凝土沿着叶片向外卸出。

The mixing device is mainly composed of mixing drum and its auxiliary supporting parts. The mixing drum is the loading container for concrete. When rotating, the concrete moves along the spiral direction of the blade, and is mixed and stirred during the continuous lifting and turning process. In the process of feeding and transportation, the mixing drum rotates forward and the concrete moves inward along the blade. When discharging, the mixing drum reverses and the concrete is discharged outward along the blade.

叶片是搅拌装置中的主要部件，损坏或严重磨损会导致混凝土搅拌不均匀。另外，叶片的角度如果设计不合理，还会使混凝土出现离析，自动上料搅拌车4立方搅拌车

The blade is the main part of the mixing device. Damage or serious wear will lead to uneven concrete mixing. In addition, if the blade angle is not designed properly, it will also cause segregation of the concrete, and the automatic loading mixer is 4 cubic meters