Turbine casting clamping device

The utility model provides a turbine casting clamping device which comprises a base, support plates are installed at the two ends of the base respectively, a storage table is arranged above the support plates, a grabbing device is arranged above the storage table, an infrared distance measuring sensor is arranged at the bottom end of the grabbing device, and the infrared distance measuring sensorand the grabbing device are connected with a PLC. Limiting devices are arranged on the left side and the right side of the storage table and comprise high-strength springs and jacking blocks, the high-strength springs are transversely arranged, one ends of the high-strength springs are fixed to the side wall of the support plate, the other ends of the high-strength springs are connected with the jacking blocks, and hard rubber layers are arranged on the front end faces of the jacking blocks. The three-jaw chuck has the advantages that the three-jaw clamping mode reduces shaking and vibration of a turbine workpiece in