1. Power take-off system

国内混凝土搅拌运输车采用底盘发动机取力方式。取力装置的作用是通过全功率驱动器将发动机动力取出，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 domestic concrete mixer truck adopts chassis engine power taking mode. The function of the power take-off device is to take out the power of the engine through the full power driver, and drive the mixing drum through the hydraulic system. The mixing drum rotates in the positive direction during the feeding and transportation process, so as to facilitate the feeding and mixing of the concrete. It rotates in the reverse direction during the discharging, and cuts off the power connection with the engine after the end of the work.

2.液压系统

2. Hydraulic system

液压系统的主要功能是将取力器动力，转化为液压能(排量和压力)，再经马达输出为机械能(转速和扭矩)，为搅拌筒转动提供动力。

The main function of the hydraulic system is to convert the power of the power take-off into hydraulic energy (displacement and pressure), and then output it to mechanical energy (speed and torque) through the motor, so as to provide power for the rotation of the mixing drum.

3.减速机

3. Reducer

将液压马达输出的转速减速后，传给搅拌筒。

The output speed of the hydraulic motor is decelerated and then transmitted to the mixing drum.

4.操纵机构

4. Control mechanism

4.1控制搅拌筒旋转方向，使之在进料和运输过程中正向旋转，出料时反向旋转。

4.1 control the rotation direction of the mixing drum to make it rotate in the forward direction during the feeding and transportation, and rotate in the reverse direction during the discharging.

4.2控制搅拌筒的转速。

4.2 control the rotating speed of mixing drum.

5.搅拌系统

5. Mixing system

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。叶片是搅拌装置中的核心部件，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。

The mixing device is mainly composed of mixing drum and its auxiliary supporting parts. The mixing drum is the container of concrete. When it rotates, the concrete moves along the spiral direction of the blade, and is mixed and stirred in the process of continuous lifting and turning. In the process of feeding and transportation, the mixing drum rotates positively, the concrete moves inward along the blade, and when discharging, the mixing drum reverses, and the concrete is discharged outward along the blade. The blade is the core part of the mixing device, which will lead to uneven mixing of concrete if it is damaged or severely worn. In addition, if the blade angle is not designed properly, the concrete will be separated.

6.清洗系统

6. Cleaning system

清洗系统的主要作用是清洗搅拌筒，有时也用于运输途中进行干料拌筒。清洗系统还对液压系统起冷却作用。

The main function of the cleaning system is to clean the mixing drum, sometimes it is also used for dry material mixing drum during transportation. The cleaning system also cools the hydraulic system.

7.散热系统

7. Cooling system

散热系统采用高温循环油对液压泵，液压马达在工作过程产生的热量通过散热片和风扇散发出去，避免高温造成液压系统损坏和工作失常。

The heat dissipation system adopts high temperature circulating oil to the hydraulic pump, and the heat generated by the hydraulic motor in the working process is emitted through the radiator and fan, so as to avoid the damage and abnormal operation of the hydraulic system caused by high temperature.

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