用传统的搅拌机在施工现场生产混凝土存在以下缺点：①计量不准确，混凝土质量不稳定。②人工上料，劳动强度大，生产效率低。③水泥粉尘大，污染环境。近年来出现的搅拌站以集中生产混凝土的方式克服了以上缺点，但是因为一次投资额高，营运资本大，中小城市以下地区尚无... The use of traditional mixers to produce concrete at the construction site has the following disadvantages: 1 Inaccurate metering and unstable concrete quality. 2 artificial feeding, labor intensity, low production efficiency. 3 large cement dust, pollute the environment. In recent years, mixing stations have overcome the above shortcomings by focusing on the production of concrete. However, because of the high investment amount and large working capital at one time, the following areas in small and medium-sized cities are not yet...