Abstract:
A rail network serving a given territory has a multiplicity of transfer stations for the transshipment of freight containers between local truck routes and scheduled freight trains, as well as between trains traveling to different destinations, each train comprising a number of flatcars with transverse roller conveyors which are aligned with similar conveyors on adjoining platforms when the train halts at a station. The platforms are separated by one or more railroad tracks and by several longitudinal conveyors in the form of articulated chains whose links are also provided with transverse roller conveyors alignable with those of the platforms and the flatcars. Transversely shiftable platform sections, each of a length equaling that of the flatcars, can be advanced into contact with a standing train to complete a driving circuit for the flatcar-mounted conveyors whereby containers resting on the rollers of a platform section can be moved onto the flatcar or vice versa. The platform sections can also be shifted completely across the well of a track, in the absence of a train, to enable the movement of a container to the opposite side. The conveyors and platform shifters are all controlled by a local computer, communicating with computers of nearby stations, on the basis of available-space information from preceding computers and of destination data fed in by local shippers or by the computers of originating stations.
Abstract:
A railroad station with at least two main tracks for freight trains with container-carrying flatcars has several pairs of ancillary tracks each flanking a respective main track, the ancillary tracks being used by respective sets of self-propelled transfer vehicles each having a length substantially corresponding to that of a flatcar. Each transfer vehicle is divided into four identical sections having respective pairs of transport arms which are laterally extendable in either direction to support containers of full or fractional lengths to be moved from or onto a flatcar, another transfer vehicle or a road vehicle aligned therewith. The spacing of the transport arms of each pair differs between vehicles on neighboring ancillary tracks to enable their extension into an interleaved position for a transfer of a container therebetween. Vehicles on an ancillary track adjoining a roadway have adjustable mountings enabling an orientation of the container axis parallel to the axis of a juxtaposed truck which is not entirely parallel to the tracks; precise alignment of a transfer vehicle with a flatcar, another transfer vehicle or a track is controlled by a vehicle-borne microprocessor responsive to signals from associated position sensors. A computer with information regarding the destination of containers to be transferred to different trains determines the order in which containers loaded on vehicles of one set are shifted to vehicles of an adjacent set preparatorily to their reloading onto respecive flatcars.