motorized positioner
Railcar Positioner (Rack and pinion) Metso Corporation



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Metso’s rack and pinion railcar (wagon) positioner is designed for high throughput operations; geared to move entire unit trains in excess of (200) two-hundred railcars.

Track grade, curve and indexing speed are the most prominent factors influencing positioner system design.
Metso’s rack and pinion positioner handles:
Maximum train weights up to 31,000 tonnes (34,000 tons US)
Pulling forces up to 177 kilogram-force (390,000 lbf. US)
Hauling speed up to 0.75 m/s (2.5 ft/s US)

When combined with our railcar dumper, the complete system provides fast dependable train turnaround requiring only one operator.
Faster cycle times due to more accurate car spotting. No rope stretch.
Additional drives can be added to the carriage in the future should trains with heavier railcars result in additional pulling force requirements.
Less foundation requirements by eliminating the off-board rope drive foundation.
The train positioner may work in conjunction with train holding devices, such as a holding arm, wheel clamps or wheel chocks.

How it works?
Cartridge drives with pinions are fix-mounted on a traveling positioner frame. Machined racks mounted to a secure longitudinal foundation between the positioner rails drive the unit along the rails. A heavy duty positioner arm on the positioner frame interacts with the railcar couplers (drawbars) to accurately index the train into the proper position for railcar unloading.
Used at high throughput / high-cycle railcar unloading or loading facilities: Ports and terminals, steel works, electric power, minerals processing plants, fertilizer producers
Can also be used with stand-alone load out and gravity receiving systems.