Mechanism for reciprocal movement of stacks of sleepers, and railway vehicle comprising such a mechanism

A mechanism for moving stacks of sleepers intended to equip a railway track, the displacement mechanism being intended to equip a group of at least two successive work wagons of a railway vehicle, each work wagon comprising a frame supported by at least one wheelset, the displacement mechanism comprising guide means configured to guide, along a longitudinal direction of each of the work wagons, a plurality of adjacent carriages in pairs, the displacement mechanism comprising drive means for moving the carriages together reciprocally between a first and a second travel position so that each carriage carries a stack of sleepers following a forward path from the first to the second travel position, such that for a given pair of adjacent carriages among the plurality of carriages comprising a front carriage and a rear carriage, the second travel position of the rear carriage corresponds to the first travel position of the front carriage and is configured to travel a return path from the second to the first travel position while being unloaded.