Search results
Results from the WOW.Com Content Network
A coupling adaptor or compromise coupler might couple to an AAR coupling on a wagon, and present, for example, a meatchopper coupler or rapid transit coupler to the next wagon. Such an adaptor might weigh 100 kg (220 lb). An adapter piece allows a Janney coupler mate with an SA3 coupler. [64]
An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.
In many heavy-haul applications, such as for coal and iron ore, either US AAR-type couplers or Soviet SA-3 couplers are used. Conversion is made harder to justify because the existing buffer and chain coupling is almost universal. Meanwhile, drawgear of new rolling stock is being built at a height suitable for conversion.
The first truck weight limits were enacted by four states in 1913, ranging from 18,000 pounds (8,200 kg) in Maine to 28,000 pounds (13,000 kg) in Massachusetts.These laws were passed to protect earth and gravel-surfaced roads from damage caused by the steel and solid rubber wheels of early heavy trucks.
AAR couplers on 1,000 mm (3 ft 3 + 3 ⁄ 8 in) metre gauge [7] and some passenger (FIAT 7131 DMUs) and freight rolling stock on standard and broad gauge. Small knuckle coupler with slot in knuckle for link and pin couplers on 750 mm (2 ft 5 + 1 ⁄ 2 in) Scharfenberg-type semi-automatic couplers on modern EMUs, DMUs and some passenger rolling ...
A truck scale (US), weighbridge (non-US) or railroad scale is a large set of scales, usually mounted permanently on a concrete foundation, that is used to weigh entire rail or road vehicles and their contents. By weighing the vehicle both empty and when loaded, the load carried by the vehicle can be calculated.
G gauge track has a spacing of 45 mm between the railheads (tracks) (c.f. 44.45 mm for 1 gauge, but that does not determine the scale to which the models are built because, to maintain a constant track width when real-life counterparts have a variety of railroad gauges, the scale has to vary.
Narrow gauge flat wagons, 750 mm (2 ft 5 + 1 ⁄ 2 in).Note the single buffer with a hook on the right side and a chain on the other. On some narrow-gauge lines in Europe, and on the Paris Metro, a simplified version of the loose-coupler is used, consisting of a single central buffer with a chain underneath.