Positioning and conveying device and mounting and using method of positioning and conveying device

The embodiment of the invention discloses a positioning conveying device and a mounting and using method of the positioning conveying device.The positioning conveying device comprises a device fixing structure, a circumferential groove changing structure and an axial in-out structure, the device fixing structure comprises an annular frame, a supporting piece and a binding ring, and the circumferential groove changing structure comprises a circumferential dock bin; the circumferential dock bin is arranged on the annular frame in a circumferential sliding mode, the axial in-out structure comprises an axial dock bin, the axial dock bin is arranged on the circumferential dock bin in an axial sliding mode, and the device fixing structure is fixed to the outer side of a retaining ring or a rotor of a generator through a supporting piece. The axial in-out structure is used for enabling the generator air gap detection equipment to enter or exit from the generator, the generator air gap detection equipment does not ne