Complete machine run-out measuring device for vehicle generator

The utility model relates to the technical field of generator complete machine measurement, and provides a vehicle generator complete machine run-out measuring device, which comprises a bottom plate, and a bidirectional run-out measuring unit, a generator fixing tool and a belt tensioning driving unit which are arranged on the bottom plate, one end of the bottom plate is provided with the bidirectional run-out measuring unit, and the other end of the bottom plate is provided with two parallel dovetail grooves; the bidirectional run-out measuring unit comprises a first ball screw sliding table, a moving platform, a run-out measuring head and an air cylinder. The generator fixing tool is arranged beside the bidirectional run-out measuring unit and is used for fixing a generator; the belt tensioning driving unit comprises a second ball screw sliding table, a driving motor and a tensioning belt; the second ball screw sliding table is arranged in the dovetail groove in a sliding manner; a driving motor is arranged