Axial circle run-out detection device for crane bearing inner ring

The invention discloses a crane bearing inner ring axial circle run-out detection device, which comprises a seat plate, a turntable, a fixing mechanism, a pressurizing mechanism, a transmission mechanism, a detection mechanism and a lifting mechanism, and has the beneficial effects that a bearing inner ring body is fixed on the upper surface of the turntable through the fixing mechanism; the motor drives the turntable and the bearing inner ring body to rotate synchronously when working, in the process, the left side of the transmission mechanism is in contact with the bearing inner ring body, the right side of the transmission mechanism is in contact with the detection plate, and the outer diameter run-out of the bearing inner ring body is transmitted to the detection plate through the transmission mechanism; the movement of the detection plate is measured through the infrared distance meter, the jumping condition of the outer ring of the bearing inner ring body can be indirectly measured, the transmission me