Marine steering gear box

The utility model relates to a steering gear box. The utility model relates to a steering gear. The device comprises an upper shell, a lower shell and a mandrel, an inner gear ring is arranged in thecircumferential direction of the inner side wall of the lower shell; a first shaft hole is formed in the center of the inner gear ring at the bottom of the lower shell; a fluted disc is arranged between the upper shell and the lower shell; outer gear rings are uniformly arranged on the outer peripheral surface of the fluted disc body; a second shaft hole is formed in the center of the fluted disc;three gear shafts which are uniformly arranged around the second shaft hole are fixedly arranged on one side, close to the lower shell, of the fluted disc; the outer side of the shaft neck of the gear shaft is sleeved with a planetary gear meshed with the inner gear ring, a guide groove is formed between the outer gear ring and the inner side wall of the lower shell, the mandrel sequentially penetrates ...