River channel gravel cleaning device and construction method thereof

The invention relates to the technical field of river channel cleaning, in particular to a river channel gravel cleaning device and a construction method thereof.The river channel gravel cleaning device comprises a conveying screening barrel used for conveying gravel, a conveying shaft is arranged on the axis in the conveying screening barrel, and the two ends of the conveying shaft are fixed to the front end and the rear end of the conveying screening barrel through bearings; a conveying shaft is arranged in the conveying screening barrel, the rear end of the conveying shaft penetrates through the conveying screening barrel, a spiral blade is installed on the conveying shaft and makes sliding contact with the inner side wall of the conveying screening barrel, a supporting platform is arranged above the conveying screening barrel, and the front end of the supporting platform is connected with the conveying screening barrel through a first connecting plate. The function that the multiple arc-shaped buckets int