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.

混凝土攪拌運輸車由汽車底盤和混凝土攪拌運輸裝置組成。我國生產的混凝土攪拌運輸車的底盤多采用整車生產廠家提供的二類通用底盤。其機構主要包括取力器、攪拌筒前后支架、減速機、液壓系統、攪拌筒、機構、清洗系統等。工作原理是，通過取力裝置將汽車底盤的動力取出，并驅動液壓系統的變量泵，把機械能轉化為液壓能傳給定量馬達，馬達再驅動減速機，由減速機驅動攪拌裝置，對混凝土進行攪拌。

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.

采用主車發動機取力方式。取力裝置的作用是通過取力開關將發動機動力取出，經液壓系統驅動攪拌筒，攪拌筒在進料和運輸過程中正向旋轉，以利于進料和對混凝土進行攪拌，在出料時反向旋轉，在工作終結后切斷與發動機的動力聯接。

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.

攪拌裝置主要由攪拌筒及其輔助支撐部件組成。攪拌筒是混凝土的裝載容器，轉動時混凝土沿葉片的螺旋方向運動，在不斷的提升和翻動過程中受到混合和攪拌。在進料及運輸過程中，攪拌筒正轉，混凝土沿葉片向里運動，出料時，攪拌筒反轉，混凝土沿著葉片向外卸出。

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.

葉片是攪拌裝置中的主要部件，損壞或嚴重磨損會導致混凝土攪拌不均勻。另外，葉片的角度如果設計不合理，還會使混凝土出現離析，自動上料攪拌車4立方攪拌車

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