The principle of small concrete mixer is to drive the variable piston pump of the hydraulic transmission system by the chassis showing the driving force, transfer the mechanical kinetic energy into the hydraulic function to the quantitative analysis motor, and then push the mixing drum to rotate according to the reducer, so as to carry out the forced mixing of concrete, so that it is not easy to set in a special time. Because of the characteristics of the work, generally based on the length of the concrete transportation distance, the construction site standards and the provisions on the different conditions of concrete quality and preparation, two different working methods are generally adopted.
1.預拌混凝土的攪拌運輸。將在攪拌站攪拌好的混凝土立即裝進(jìn)攪拌車(chē)中運輸，在小型混凝土攪拌車(chē)運輸中途，攪拌筒大概以1～3r/min轉速比旋轉，使筒內混凝土持續攪拌，防止混凝土離析狀況，以確?；炷疗焚|(zhì)。這類(lèi)方法運輸混凝土的間距不適合太長(cháng)，一般操縱在混凝土初凝之前，依據混凝土配制和實(shí)時(shí)路況、氣溫等標準可定下距離或時(shí)間。
1. Mixing and transportation of ready mixed concrete. The concrete mixed in the mixing plant will be immediately transported into the mixer truck. During the transportation of small concrete mixer truck, the mixing drum will rotate at a speed ratio of 1-3r / min to continuously mix the concrete in the drum to prevent concrete segregation and ensure the quality of concrete. This kind of method is not suitable for long distance transportation of concrete. Generally, before the initial setting of concrete, the distance or time can be determined according to the concrete preparation, real-time road conditions, air temperature and other standards.
2.混凝土拌和料的攪拌運輸。一般有2種狀況：顆粒料和水料攪拌運輸。顆粒料灌水攪拌運輸：在調料站將料石、混凝土等顆粒料按混凝土配制添加攪拌筒內，再將攪拌自來(lái)水添加車(chē)里儲水箱，在中途適度的間距或時(shí)間將水噴到筒內，對混凝土開(kāi)展攪拌，也可去施工工地后攪拌。水料攪拌運輸：在調料站將料石石料、混凝土和水等拌和料按配制另外裝進(jìn)攪拌筒內，攪拌筒在運輸中途以8～12r/min的轉速比旋轉，對拌和料開(kāi)展攪拌，進(jìn)行攪拌工作。
2. Mixing and transportation of concrete mixture. Generally, there are two kinds of conditions: granular material and water material mixing transportation. Granular material irrigation, mixing and transportation: in the mixing station, granular materials such as stone and concrete are added into the mixing drum according to the concrete preparation, and then the mixing tap water is added into the water storage tank in the truck, and the water is sprayed into the drum at an appropriate interval or time in the midway to carry out mixing for the concrete, or the mixing can be carried out after going to the construction site. Water material mixing and transportation: in the seasoning station, the mixing materials such as stone, concrete and water are separately put into the mixing drum according to the preparation, and the mixing drum rotates at the speed ratio of 8-12r / min in the middle of transportation to carry out mixing and mixing.
所述2種方法對比，前面一種更能增加對混凝土的運輸時(shí)間或間距。第二種方法從某種意義上而言，小型混凝土攪拌車(chē)基礎取代了攪拌站的功效，為使用人既節約了機器設備項目投資，又提升了生產(chǎn)效率?？墒?，在混凝土粘結性，勻稱(chēng)等品質(zhì)上存有著(zhù)難題，不象攪拌站生產(chǎn)制造的混凝土那般好。因此，為確?；炷恋钠焚|(zhì)，考慮當代基本建設工程施工的規定，種工作方式變成了現階段小型混凝土攪拌車(chē)的優(yōu)選工作方式。
Compared with the above two methods, the former one can increase the transportation time or spacing of concrete. In a sense, the foundation of small concrete mixer replaces the effect of mixing station, which not only saves the investment of machinery and equipment project, but also improves the production efficiency. However, there are some problems in the quality of concrete, such as cohesiveness and symmetry, which are not as good as the concrete produced by mixing station. Therefore, in order to ensure the quality of concrete, considering the provisions of contemporary infrastructure construction, the first working mode has become the preferred working mode of small concrete mixer at this stage.
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