Steam turbine with swing supporting structure

A steam turbine with a swing supporting structure comprises a cylinder, a bearing box arranged on the cylinder and a base positioned below the cylinder. A swing support is arranged between the bearing box and the base and positioned on the two sides of the front bearing box of the steam turbine and supports the steam turbine on the base. The swing support comprises a rod body as well as an upper support part and a lower support part which are respectively positioned at the two ends of the rod body. The upper support part and the lower support part are connected with the cylinder and the base respectively, the upper support part is protruded into a pressure plate and is mounted on the bearing box through the pressure plate, and the lower support part is protruded into the base. The steam turbine provided by the utility model changes the sliding structure into the lateral swing supporting structure, thereby resulting in very small relative displacement between the cylinder and a base support and small friction.