Train wheel transport position detecting device

The invention discloses a train wheel transport position detecting device which is characterized by comprising a coarse adjustment unit and a position detection unit, wherein the coarse adjustment unit comprises a pedestal and a sliding seat that is arranged on the pedestal and slides relative to the pedestal, the pedestal is mounted on a steel structure platform on tail ends of train wheel transport roller-ways, and a side face of the pedestal is provided with a calibrated scale on which positions of slide seats corresponding to train wheels of different specifications are marked; the position detection unit comprises a limiting rod, a limiting seat, an optoelectronic switch and a support rack A used for installation of the optoelectronic switch; the limiting seat and the support rack A are mounted on the sliding seat; the limiting rod is mounted on the limiting seat in a reciprocating manner, a head part of the limiting rod extends toward the tail ends of the train wheel transport roller-ways, and a tail en