1、 The investor shall fully understand the product quality level, service capacity and price information of the same industry of domestic and foreign construction manufacturers, market research, on-site inspection of the manufacturer's processing, and ensure the quality of self-feeding concrete mixer. The manufacturer of the required complete set of equipment can be selected by holding a reply meeting, bidding meeting and other ways, and the products with high quality and low price can be selected. Determine the scale and grade of commercial concrete mixer according to the ownership of funds.

二、搅拌车场地的选择

2、 Selection of mixing truck site

选择搅拌场地时，应确保场地离石料场和砂厂较近，以保证有足够的水分，并远离住宅区。如果我们能充分利用山坡地形，将物料场设置在山坡、较高的地面上，可以降低配料机的配料高度，使装载机进料、爬坡角度小或不需要爬坡，既节省能源又减少磨损。设备基地的安装应注意避开地上、地下光缆、电源或通信电缆。

When selecting the mixing site, it should be ensured that the site is close to the quarry and sand plant to ensure that there is enough water and away from the residential area. If we can make full use of the hillside terrain and set the material yard on the hillside and high ground, we can reduce the batching height of the batching machine, so that the loader has a small feeding and climbing angle or does not need to climb, which saves energy and reduces wear. The installation of the equipment base shall avoid ground and underground optical cables, power supply or communication cables.

三，骨料供应方式的选择建议采用装载机供料

3、 The selection of aggregate supply mode is recommended to use loader

搅拌车的选用如用于高速公路工程施工(工期短、移动进行搬迁问题频繁)，则要通过选用快装式、模块式结构的搅拌车。

If the mixer truck is used for highway construction (short construction period, frequent moving and relocation problems), it is necessary to select the quick-mounted and modular mixer truck.

第四，传送带机选如场地宽阔，应优先发展选用小倾角18°，平皮带机输送生活方式(为降低企业设备公司采购管理成本，也可以通过选用有效提升料斗方式)。如果没有场地面积不断受到一定限制，可以充分考虑大倾角(一般为40°～50°)挡边皮带机(采用一些附加皮带结构，可以同时达到90°)。但在砂石潮湿的环境下，大倾角挡边皮带机有粘砂的缺点，皮带返程时，皮带下面落砂现象分析比较具有严重，商品提高混凝土配比要考虑砂的利用相关系数。

Fourth, if the site is wide, priority should be given to the development of flat belt conveyor with a small inclination of 18 ° (in order to reduce the procurement management cost of enterprise equipment companies, it can also be achieved by selecting effective lifting hopper). If the area of the site is not constantly limited, the large inclination angle (generally 40 °~50 °) edge belt conveyor can be fully considered (some additional belt structures can be used to reach 90 ° at the same time). However, in the wet environment of sand and gravel, the belt conveyor with large inclination has the disadvantage of sand sticking. When the belt returns, the analysis of sand falling under the belt is relatively serious, and the relevant coefficient of sand utilization should be considered to improve the commercial concrete ratio.

一个完整的，自上料混凝土搅拌机集料规模是1规模的累计计量和2-4规模的个人计量。为了保证每个骨料有足够的贮存容量，可将每个骨料设计成2个称重配料。

The aggregate scale of a complete self-feeding concrete mixer is the cumulative measurement of scale 1 and the individual measurement of scale 2-4. In order to ensure that each aggregate has sufficient storage capacity, each aggregate can be designed into 2 weighing ingredients.

如果企业施工技术要求相对较低时，选用2种骨料累计价值计量的

If the construction technology requirements of the enterprise are relatively low, the aggregate of 2 kinds of aggregate shall be selected for measurement

自上料混凝土搅拌机;如果一个工程有特殊的要求，则必须通过选用3种或4种骨料秤累计计量的配料机，甚是每种骨料可以单独使用计量的配料机。

Self-feeding concrete mixer; If a project has special requirements, three or four aggregate weighing batchers must be selected for cumulative measurement, or even each aggregate can be measured separately.