1. Mixing drum: the mixing drum used in this vehicle is a widely used structural form. The mixing drum is pear shaped. During transportation, the washing water and mixed water added as required are injected into the barrel from the inlet of the mixing bucket head.

2.传动系统：搅拌筒的驱动方式是以发动机为动力源，从发动机后端的取力器获取动力，通过传动轴传递给变量柱塞液压泵，通过定量柱塞油马达，再通过减速器驱动搅拌筒转动。

2. Transmission system: the driving mode of the mixing drum is to take the engine as the power source, get the power from the power take-off at the rear end of the engine, transmit the power to the variable displacement piston hydraulic pump through the transmission shaft, drive the mixing drum to rotate through the quantitative plunger oil motor and the reducer.

3.搅拌筒的进料和出料系统:是辅助搅拌筒工作的重要装置。

3. Feeding and discharging system of mixing drum: it is an important device to assist the mixing drum.

4.供水系统：水泥自动搅拌车的供水系统主要用于清洗搅拌设备。该机型有两种供水系统，一种是离心式水泵供水系统；一个是压力水箱供水系统，用户可以选择安装。

4. Water supply system: the water supply system of concrete mixer is mainly used for cleaning mixing equipment. This model has two kinds of water supply system, one is centrifugal pump water supply system, the other is pressure water tank water supply system, users can choose to install.

5.控制系统：它是整个搅拌车的控制部分。控制面板上有一个“工”字槽，是控制杆的活动空间。后半部的槽上设有用于固定操纵杆位置的限位孔。控制系统通过汽车尾部的左右控制杆控制搅拌筒的正转、反转和转速，从而完成进料、出料和搅拌动作。

5. Control system: it is the control part of the whole mixer. There is a "I" slot on the control panel, which is the active space of the control lever. A limit hole for fixing the position of the control lever is arranged on the groove of the rear half part. The control system controls the forward rotation, reverse rotation and rotation speed of the mixing drum through the left and right control rods at the rear of the car, so as to complete the feeding, discharging and mixing actions.

水泥自动搅拌车将在运输过程中一直保持搅拌筒旋转，以确保其运送的混凝土不会凝固。混凝土运输后，通常用水冲洗搅拌筒的内部，以防止硬其化的混凝土占据空间，并使搅拌筒的体积越来越小。

The concrete mixer truck will keep the mixing drum rotating during transportation to ensure that the concrete transported will not set. After concrete transportation, the interior of mixing drum is usually washed with water to prevent hardened concrete from occupying space and make the volume of mixing drum smaller and smaller.