Polishing device for special-shaped accessories of yacht

The invention relates to the technical field of grinding equipment, in particular to a yacht special-shaped accessory grinding device which comprises a supporting seat and a grinding assembly, a positioning disc is arranged on the supporting seat and used for placing an oval workpiece, and the grinding assembly comprises three right-angle frames. The three right-angle frames are evenly distributed on the supporting base in the circumferential direction of the positioning disc, each right-angle frame is provided with two vertically-connected connecting plates, the connecting position of the two connecting plates is hinged to the supporting base, and the oval workpiece is tangent to the connecting plates in the polishing process. A sliding frame is arranged on each connecting plate in a sliding mode, and the ends, close to each other, of the adjacent sliding frames are connected in a hinged mode; a grinding belt is arranged on the sliding frame, and the grinding belt and the oval workpiece rotate relatively to