Classified according to the speed change mode, the automatic head electric transmission of concrete mixer can be divided into two types: hierarchical automatic transmission and stepless automatic transmission. According to different driving modes of concrete mixer truck, automatic transmission can be divided into rear drive automatic transmission and front drive automatic transmission.

（1）按变速方式分类 混凝土搅拌车自动变速器按变速方式的不同，可分为有级自动变速器和无级自动变速器两种。

(1) According to the classification of speed change mode, the automatic transmission of concrete mixer can be divided into two types: hierarchical automatic transmission and stepless automatic transmission.

（2）按汽车驱动方式分类 自动变速器按照混凝土搅拌车驱动方式的不同，可分为后驱动自动变速器和前驱动自动变速器两种。

(2) According to the classification of vehicle driving mode, automatic transmission can be divided into rear drive automatic transmission and front drive automatic transmission according to the different driving modes of concrete mixer.

（3）按齿轮传动机构类型分类 自动变速器按齿轮传动机构不同，可分为普通齿轮式和行星齿轮式两种。

(3) According to the type of gear transmission mechanism, automatic transmission can be divided into ordinary gear type and planetary gear type according to different gear transmission mechanisms.

（4）按控制方式分类 自动变速器按控制方式不同，可分为混凝土搅拌车全液压控制自动变速器和电子控制自动变速器两种。

(4) According to different control modes, automatic transmission can be divided into full hydraulic control automatic transmission and electronic control automatic transmission of concrete mixer.