The concrete mixer truck is composed of special vehicle chassis, mixing tank, feeding and discharging device, water supply system and hydraulic system. The mixing tank is used to stir and mix concrete. The mixing tank is mainly composed of tank body, connecting flange, raceway and mixing blade. The shape of the mixing tank is mostly pear shaped, also known as snail truck. The material of the mixing tank is generally high-strength steel plate. In order to automatically load and unload concrete, spiral blades of shape are welded on the inner wall of the mixing tank. When the mixing tank rotates in the forward direction, the concrete in the tank will not set quickly due to continuous stirring. When it rotates in the reverse direction, the concrete will be automatically discharged from the shoe opening.

混凝土搅拌车使用的都是专用底盘，它有足够的承载力和强劲的输出功率，现在的搅拌车都是轻量化设计，装载量都是比较多的。

The concrete mixer truck uses a special chassis, which has sufficient bearing capacity and strong output power. Now the mixer truck is lightweight design, and the loading capacity is relatively large.

搅拌车的结构设计要合理，操作方便，搅拌罐的进出料口耐要好，沙和石子是混凝土的主要组成部分，这些材料使得进出料口的磨损会比较严重，一般采用低合金钢制造的混凝土搅拌罐的使用寿命为5万-8万立方米，而罐内的叶片使用寿命大概在3万-4万立方米。混凝土搅拌车在行车中及等待卸料过程中，为避免混凝土水分离析或凝固，通过取力器装置将底盘的动力取出，并驱动液压系统的变量泵吧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 structural design of the mixer truck shall be reasonable and easy to operate. The inlet and outlet of the mixing tank shall be resistant. Sand and stones are the main components of concrete. These materials will cause serious wear at the inlet and outlet. Generally, the service life of the concrete mixing tank made of low alloy steel is 50000-80000 m3, while the service life of the blades in the tank is about 30000-40000 m3. In order to avoid concrete moisture segregation or solidification during driving and waiting for unloading, the power of the 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.

在这个过程中搅拌罐均需要匀速转动，卸料时反向转动，罐内混凝土被叶片转动，均匀连续卸出。进出料系统是由进料斗、出料斗、主卸料槽、之家、锁紧架等组成，是搅拌车的重要组成部分，直接影响进出料的速度和质量，进出料斗通过之架和副车架的后台支撑架相连，出料斗和主卸料槽内加油衬板，衬板采用刚强度细晶粒合金钢，在选购搅拌车的时候要注重的了解它的底盘配置及上装材质。

In this process, the mixing tank needs to rotate at a uniform speed. During unloading, it rotates in the opposite direction. The concrete in the tank is rotated by the blades and unloaded evenly and continuously. The feed and discharge system is composed of feed hopper, discharge hopper, main discharge tank, home, locking frame, etc. it is an important part of the mixer, which directly affects the speed and quality of feed and discharge. The feed and discharge hopper is connected with the backstage support frame of the subframe through the frame. The feed liner in the discharge hopper and the main discharge tank is made of rigid strength fine grain alloy steel, When choosing a mixer truck, we should pay attention to understand its chassis configuration and top material.

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