The basic principle of the small concrete mixer is that the vehicle chassis provides the driving force to control the variable plunger pump of the hydraulic transmission system software, convert the mechanical energy of the mechanical equipment into four column hydraulic function and transmit it to the qualitative analysis motor, and then promote the rotation of the mixing drum according to the reducer, so as to forcibly mix the concrete, Make it difficult to solidify in a unique time. Due to the above working characteristics, two different working methods are generally selected according to the length of concrete transportation interval, engineering construction site specifications and requirements for different concrete quality and configuration.

1.预拌混凝土的拌和运送。将在混凝土搅拌站拌和好的混泥土马上放进混凝土搅拌车中运送，在小型混凝土混凝土搅拌车运送半途，拌和筒大约以1～3r/min传动比转动，使筒内混泥土不断拌和，避免混凝土裂缝情况，以保证混泥土质量。这类方法运送混泥土的间隔不宜过长，一般控制在混泥土初凝以前，根据混泥土配置和交通路况、平均气温等规范可定好间距或时间。

1. Mixing and transportation of ready mixed concrete. The concrete mixed in the concrete mixing plant is immediately put into the concrete mixer truck for transportation. Halfway through the transportation of the small concrete mixer truck, the mixing drum rotates at a transmission ratio of about 1 ~ 3R / min to continuously mix the concrete in the drum to avoid concrete cracks and ensure the quality of concrete. The interval for transporting concrete by this method should not be too long. It is generally controlled before the initial setting of concrete. The interval or time can be determined according to the concrete configuration, traffic conditions, average temperature and other specifications.

2.混泥土搅拌料的拌和运送。一般有2种情况：颗粒物料和水料拌和运送。颗粒物料注水拌和运送：在调味品站将石料、混泥土等颗粒物料按混泥土配置加上拌和筒内，再将拌和饮用水加上车内储储水箱，在半途适当的间隔或时间将水喷入筒内，对混泥土进行拌和，也可去施工施工工地后拌和。水料拌和运送：在调味品站将石料砂石料、混泥土和水等搅拌料按配置此外放进拌和筒内，拌和筒在运送半途以8～12r/min的传动比转动，对搅拌料进行拌和，开展拌和工作中。

2. Mixing and transportation of concrete mixing materials. Generally, there are two situations: mixing and transportation of granular materials and water materials. Water injection, mixing and transportation of granular materials: add granular materials such as stone and concrete into the mixing drum according to the concrete configuration in the condiment station, add the mixing drinking water into the internal storage tank, and spray water into the drum at appropriate intervals or time on the way to mix the concrete, or go to the construction site for mixing. Mixing and transportation of water materials: put the mixing materials such as stone, sand, concrete and water into the mixing drum according to the configuration in the condiment station. The mixing drum rotates with a transmission ratio of 8 ~ 12R / min during the transportation to mix the mixing materials and carry out the mixing work.

小型混凝土混凝土搅拌车基本替代了混凝土搅拌站的作用，为应用人既节省了机械设备投资项目，又提高了生产率。但是，在混泥土粘结力，均匀等质量上存在着难点，不象混凝土搅拌站生产加工的混泥土那样好。因而，为保证混泥土的质量，考虑到当今基建项目建筑施工的要求。

Small concrete mixer basically replaces the function of concrete mixing station, which not only saves mechanical equipment investment projects for users, but also improves productivity. However, there are difficulties in the quality of concrete adhesion and uniformity, which is not as good as the concrete produced and processed in the concrete mixing plant. Therefore, in order to ensure the quality of concrete, the construction requirements of today's infrastructure projects are considered.

当然，要想更各个方面地充分运用小型混凝土混凝土搅拌车的功效和优势，进熟悉混凝土搅拌车的基本原理仍是不够的，更重要的是掌握适当操作流程，并提高对混凝土搅拌车的维修保养和检查维修，仅有那般才能够保证混凝土搅拌车从始终运行在状况。

Of course, in order to make full use of the efficacy and advantages of small concrete mixer in all aspects, it is still not enough to be familiar with the basic principles of concrete mixer. What is more important is to master the appropriate operation process and improve the maintenance, inspection and repair of concrete mixer. Only in this way can we ensure the operation of concrete mixer from beginning to end.