Concrete mixing device for road construction

The utility model provides a concrete mixing device for road construction, includes the agitator, the downside of agitator is equipped with gearbox casing, department of gearbox casing central authorities is equipped with a driving gear, the driving gear is fixed to be set up in the initiative pivot, the initiative pivot is connected with the motor that is located the gearbox casing below, driven gear has all been meshed to the driving gear both sides, driven gear is fixed the setting on the driven spindle all, and initiative pivot and driven spindle all extend to in the agitator, the initiative pivot is equipped with the cavity inner chamber on being located the part of agitator, evenly sets up delivery ports a plurality of and that the agitator is linked together on the lateral wall of cavity inner chamber, it is equipped with a plurality of stirring boards to fix in the initiative pivot. The beneficial effects of the utility model are that can realize automatic interpolation of water and add with the ratio