Oil supply structure of transverse connection gear transmission device for ship

The invention relates to an oil supply structure, in particular to an oil supply structure of a marine transverse gear transmission device. The problems that in an existing oil supply structure, when a certain side breaks down, oil supply of a lubricating oil system of the other side to a transverse connection gearbox can be affected, and the running reliability of a ship cannot be guaranteed are solved. A left main gear box (7) and a right main gear box (8) are arranged on the left side and the right side, and the left main gear box (7) and the right main gear box (8) are connected with a transverse connection gear box (1). One end of the left side lubricating oil system is connected with one end of the right side lubricating oil system, the other end of the left side lubricating oil system and the other end of the right side lubricating oil system are connected with the left side and the right side of the transverse connection gear box (1) respectively, and return oil of the transverse connection gear box (