2015年11月22日星期日

Development of mobile concrete mixer

Concrete mixer firstly appeared in the form of self-falling concrete mixer. With the constantly increasing requirements of concrete, the compulsory concrete mixer came into being. Compulsory concrete mixer can be classified into vertical shaft type and horizontal shaft type. The two kinds of concrete mixers almost occupy the domestic market.
The self-falling concrete mixer can date back to 20th century and the drum concrete mixer driven by steam engines has started to emerge. In the following 50 years, the reverse discharging and tilting discharging of double cone concrete mixer and the drum concrete mixer were born in succession.
self loading concrete mixer
in the early 1950s, compulsory concrete mixer has developed and promoted rapidly. It is composed of turbo-prop concrete mixer and planetary concrete mixer. After 1970s, with the application of light-weight aggregate, the circular groove horizontal shaft compulsory concrete mixer which is also horizontal shaft concrete mixer appeared. It can be divided into two types: single shaft and twin-shaft, which has features of self-falling mixing and compulsory mixing.Compulsory concrete mixer is developed successfully in the early 1980s. But it develops quickly and has far surpassed many other models in the product specification and product quantity. The mixer is the core of compulsory concrete mixer and it is closely connected with mixing quality, production efficiency and using and maintenance costs. It is composed of double circular groove drum which is placed horizontally, two mixing shafts which rotate in the opposite direction and mixing blades.

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