Turnout replacement device and system

The invention discloses a turnout replacement device and system, the device comprises a gantry crane, and the gantry crane further comprises a cross beam; the sliding frames are movably arranged at the left end and the right end of the cross beam respectively and can transversely move along the cross beam so as to adjust the transverse span of the gantry crane; the hoisting mechanism is arranged on the cross beam, located between the two sliding frames and capable of transversely moving along the cross beam so as to adjust the hoisting position of the turnout; the supporting legs are arranged below the two sliding frames respectively and can stretch out and draw back in the vertical direction so as to adjust the distance between the cross beam and the roadbed. In the working state, the multiple gantry cranes are arranged at intervals in the railway line direction and arranged on the roadbed on the two sides of the steel rails in a striding mode. The technical problems that existing turnout replacing equipment