Gantry type hydraulic extravagation loading and unloading equipment for railway train

The utility model discloses gantry type hydraulic extravagation loading and unloading equipment for a railway train. The equipment comprises a gantry track, a gantry, a driving motor, a driving wheel train, a hydraulic extravagation mechanism and a winding mechanism, wherein the gantry track is arranged on the two sides of a railway track; the driving motor, the driving wheel train and the hydraulic extravagation mechanism are arranged on the gantry; the driving wheel train comprises chain wheels, a traveling rolling bar, traveling wheels and traveling chains; the traveling rolling bar is arranged at the top of the gantry; the chain wheels are arranged on the traveling rolling bar; the traveling wheels are arranged at the bottom of the gantry, and are in sliding fit with the gantry tracks; toothed chain wheels are arranged on the traveling wheels; the traveling chains are meshed with the chain wheels and the toothed chain wheels of the traveling wheels; the chain wheels are driven by the driving motor to rota