| 摘要 |
PURPOSE: A double screw drum for leveling concrete is provided to improve the surface smoothness and life of concrete. CONSTITUTION: The double screw drum for leveling concrete comprises a reduction motor(v/s motor)(1) generating power, a power change chain(3) and power change gears(6,6a) transferring power, two screws(13,13a) spreading concrete by receiving power from the power change chain(3) and the power change gears(6,6a), and two masonry rollers(14,14a) compacting concrete for finishing masonry work, wherein two masonry rollers(14,14a) rotate simultaneously or separately according to a revolving direction or conditions of a building site to improve surface smoothness on concrete masonry work.
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