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

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 mixer truck is composed of an automobile chassis and a concrete mixing and transportation device. The chassis of concrete mixer trucks produced in China mostly adopts class II general chassis provided by vehicle manufacturers. The mechanism mainly includes power takeoff, front and rear supports of mixing drum, reducer, hydraulic system, mixing drum, mechanism, cleaning system, etc. The working principle is that the power of the automobile chassis is taken out through the power take-off device, and the variable pump of the hydraulic system is driven to convert the mechanical energy into hydraulic energy and transmit it to the quantitative motor. The motor then drives the reducer, and the reducer 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 power take-off mode of main vehicle engine is adopted. The function of the power take-off device is to take out the power of the engine through the power take-off switch and drive the mixing drum through the hydraulic system. The mixing drum rotates forward during feeding and transportation, so as to facilitate feeding and mixing of concrete, rotate reversely during discharging, and cut off the power connection with the engine after the end of 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 of concrete. When rotating, the concrete moves along the spiral direction of the blade and is mixed and stirred in the process of continuous lifting and turning. During 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

Blade is the main component of mixing device. Damage or serious wear will lead to uneven mixing of concrete. In addition, if the design of blade angle is unreasonable, the concrete will be separated, and the automatic feeding mixer will be 4 cubic mixer

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