Automatic precise material distribution device suitable for double-block type sleeper production

The utility model discloses an automatic precise material distribution device suitable for double-block type sleeper production. The concrete mixing device comprises a feeding part for conveying concrete from a stirring part into a precise distribution part, the precise material distribution part comprises a material distribution machine hopper with a quantitative material loading function; a plurality of weighing container assemblies are arranged on the lower side of the distributing machine hopper; a plurality of first discharging openings capable of being closed are formed in the bottom ofthe distributing machine hopper, each first discharging opening is correspondingly formed over the weighing container assembly, a second discharging opening capable of being closed is formed in the lower side of the weighing container assembly, and a discharging opening driving assembly used for opening/closing the second discharging opening is arranged on the second discharging opening. Materialsare controlled twice in t