Concrete mixer truck is a special truck used to transport concrete for construction; Because of its shape, it is often called snail car. Such trucks are equipped with cylindrical mixing drums to carry the mixed concrete. The concrete mixer truck has five systems:

攪拌筒：該車型所采用的攪拌筒形式是一種應用較為普遍的結構形式，攪拌筒采用梨形結構，其清洗用水和運輸過程中視需要補充加入的拌合水，均由攪拌筒頭部進料口處注入筒內。

Mixing drum: the mixing drum used in this model is a widely used structural form. The mixing drum adopts pear structure. Its cleaning water and mixing water added as needed during transportation are injected into the drum at the feed inlet at the head of the mixing drum.

傳動系統：該攪拌筒的驅動方式為以發動機為動力源，由發動機后端的取力器取力，通過傳動軸傳遞到變量柱塞液壓泵，經定量柱塞油馬達，再通過減速機帶動攪拌筒轉動。

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

攪拌筒的進出料系統（裝料和卸料機構）：是攪拌筒工作的重要裝置。

Feeding and discharging system of mixing drum (loading and unloading mechanism): it is an important device for mixing drum.

操縱系統：是整個攪拌車的**部件，操縱面板上開有“工字形”槽，是操縱桿的活動空間；并且后半部的槽上開有限位孔，用來固定操縱桿的位置。該操縱系統通過汽車尾部的左右兩個操縱桿來**攪拌筒的正反轉和轉速，從而來完成進出料以及攪拌動作。

Control system: it is the * * part of the whole mixer. There is an "I-shaped" slot on the control panel, which is the movable space of the control lever; And a limited position hole is opened on the groove of the rear half to fix the position of the control lever. The control system controls the forward, reverse and rotational speed of the mixing drum through the left and right control levers at the rear of the vehicle, so as to complete the feeding, discharging and mixing actions.

供水系統：混凝土攪拌車的供水系統主要用來清洗攪拌裝置。該車型的供水系統共有兩種型式，一種是離心水泵供水系統；一種是壓力水箱供水系統，可供用戶選裝。

Water supply system: the water supply system of concrete mixer truck is mainly used to clean the mixing device. There are two types of water supply system for this model: one is centrifugal water pump water supply system; One is the water supply system of pressure water tank, which can be optional for users.

混凝土攪拌車在運輸過程中會始終保持攪拌筒轉動，以保證所運載的混凝土不會凝固。運送完混凝土后, 通常都會用水沖洗攪拌筒內部, 防止硬化的混凝土占用空間, 使攪拌筒的容積越來越少。

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