The structure of the mixing drum shall be simple, compact and light, so as to minimize the self weight of the truck, which is conducive to improving the effective loading capacity of the mixing truck and relatively reducing the power consumption of the truck. At the same time, the layout of the structure should adapt to the narrow and long shape and height limit of the chassis. The height and center of gravity of the mixing drum and the mixing truck should be reduced as much as possible to ensure the driving stability and trafficability of the mixing truck. In addition, it should have sufficient effective loading capacity to meet the specified mixing, loading and unloading performance, and adapt to the characteristics of the carrying chassis and mixing work in the structure. The shape of the mixing drum is relatively complex, and the section diameter along the axis direction changes.

中部直径最大，两边逐渐收缩。大容量的搅拌筒则在两段截锥体间加一段圆柱体，以扩大装载容积，同时避免搅拌筒中部尺寸过大。

The diameter of the middle part is the largest, and the two sides gradually shrink. For the mixing drum with large capacity, a cylinder is added between the two truncated cones to expand the loading volume and avoid excessive size in the middle of the mixing drum.

一般情况下，搅拌筒的前锥、中锥、后锥长度的参数选取如下：

Generally, the parameters of the length of the front cone, middle cone and rear cone of the mixing drum are selected as follows:

通常情况下最大直径取在2100~2300mm之间，如果最大直径取在2400mm,搅拌运输车在转弯时就会有发飘现象，就有可能造成事故。

Generally, the maximum diameter is 2100 ~ 2300mm. If the maximum diameter is 2400mm, the mixer truck will float when turning, which may cause accidents.

上山对大罐车来讲太困难，但对自上料搅拌车来讲挺简单。拿2.0方自上料搅拌车来讲，科学的设计，铰接的车身，四驱的应用，爬坡30°稳固有力。如果施工点在低洼处，要么它与管道搭配，往下运送混凝土，要么便“亲自前往”，定点卸料。

Going up the mountain is too difficult for a large tank truck, but it is very simple for a self loading mixer truck. Take the 2.0m3 self loading mixer as an example. With scientific design, articulated body and 4WD application, it is stable and powerful when climbing 30 °. If the construction site is in a low-lying place, either it is matched with the pipeline to transport the concrete down, or it will "go in person" and unload at a fixed point.

高原对自动上料搅拌车来讲也是妥妥没问题，能为用户定制符合当地环境的“高原机”，在平原上自动上料搅拌车如何“出色发挥”，在高原上就能如何“出色发挥”。

The plateau is also a good place for the automatic feeding mixer. It can customize the "plateau machine" in line with the local environment for users. How to "play well" on the plain and how to "play well" on the plateau.