Trolley quick-changing device for crane

The utility model provides a trolley quick-changing device for a crane, and particularly relates to the field of hot chamber cranes. The trolley quick-changing device comprises a trolley track, a trolley frame body, an anti-rollover device and a suspender, the trolley track is arranged on a large frame body, a wheel assembly is installed at the bottom of the trolley frame body, and the trolley frame body moves on the trolley track through the wheel assembly; the anti-rollover device comprises an anti-rollover main shaft and an anti-rollover hook head, the anti-rollover hook head can hook the trolley track and prevent the trolley frame body from rollover in the moving process, the anti-rollover main shaft can drive the anti-rollover hook head to rotate, and when the trolley frame body needs to be lifted out, the anti-rollover hook head can be driven by the anti-rollover main shaft to rotate so that the anti-rollover hook head can be separated from the trolley track; the lifting rod is arranged on the trolley f