Excavating mechanism with bucket convenient to replace

The excavating mechanism comprises an excavator body, a small arm, a large arm, an excavator bucket body, a fixed connecting block, a connecting rod and a connecting ring, the large arm is arranged on the upper side of the excavator body, the small arm is arranged on the side, away from the excavator body, of the large arm, the excavator bucket body is arranged at one end of the small arm, and the connecting rod is connected with the excavator bucket body. Two connecting rings are arranged at the joint of the excavator bucket body and the small arm, the two connecting rings are symmetrically arranged relative to the excavator bucket body, control shafts are arranged in the two connecting rings, a fixing plate is arranged on one side of each control shaft, a supporting plate is arranged at the joint of the fixing plate and the excavator bucket body, and a sliding groove is formed in the supporting plate; the size of the sliding groove is matched with the size of the fixing plate. The excavator bucket is simple