Pump shaft and impeller assembling tool

A tool for assembling a pump shaft and an impeller comprises a heating device for heating the impeller and a crimping device for pressing the pump shaft (26) into the impeller (5), and is characterized in that the heating device is an oil bath, an impeller transmission device is arranged between the oil bath and the crimping device and comprises a supporter, the supporter is composed of a circular plate (17) and fins (8), and the circular plate (17) and the fins (8) are arranged on the supporter. Fins (8) are symmetrically arranged on the edge of the circular plate, the vertical portions of the fins are connected with the edge of the circular plate (17), the horizontal portions of the fins (8) are connected with a ring body (7) capable of supporting the impeller, and the supporter is controlled by a lifting unit to ascend and descend and controlled by a rotating unit to rotate. The utility model has the beneficial effects that the heat conductivity of the oil liquid is high, the heating time of the impeller c