Two-stage compressor rotor and assembling device

The utility model provides a two-stage compressor rotor and an assembling device, and relates to the technical field of gas pumps, the two-stage compressor rotor comprises a main shaft, a first impeller, a second impeller and a limiting assembly, one side of the main shaft is provided with a screw hole, one end of the main shaft is provided with a first locking nut, one side of the first locking nut is provided with an opening, and a screw is arranged in the opening; the first locking nut is fixedly connected with the main shaft through a screw hole, an open hole and a screw, the outer side of the middle section of the main shaft is sleeved with the first impeller and the second impeller, and the limiting assemblies are arranged on the two sides of the first impeller and the second impeller and used for limiting the first impeller and the second impeller, so that axial movement of the first impeller and the second impeller is avoided. According to the two-stage compressor rotor and the assembling device, the