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Rotary Railcar Dumper at 45-Degree Rotation. A rotary car dumper or wagon tippler (UK) is a mechanism used for unloading certain railroad cars such as hopper cars, gondolas or mine cars (tipplers, UK). It holds the rail car to a section of track and then rotates the track and car together to dump out the contents.
As wheel loads increase, track maintenance expenses increase and the ability of a given rail weight, ballast depth, and tie configuration to handle prolonged rail traffic decreases. Moreover, the ability of a given bridge to handle prolonged rail traffic also decreases as wheel loads increase. [10] The axle load is twice the wheel load.
A sortation conveyor system is used for merging, identifying, inducting, and separating products to be conveyed to specific destinations, and typically consists of flat-belt, roller, and chute conveyor segments together with various moveable arms and/or pop-up wheels and chains that deflect, push, or pull products to different destinations.
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.
Railway costing is the calculation of the variable and fixed costs of rail movements. Variable costs are those that increase or decrease with changes in the traffic volumes or service levels and include fuel, maintenance and train crew costs, for example. Fixed costs are normally associated with items such as head office, interest charges and ...
Double-stack rail transport is a form of intermodal freight transport in which railroad cars carry two layers of intermodal containers. Invented in the United States in 1984, it is now being used for nearly seventy percent of United States intermodal shipments.
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Each unit of a double-stack car contains a single well; they often are constructed with three to five cars connected by articulated connectors. The intermediate connectors are supported by the centerplate of single trucks, often a 125-short-ton (112-long-ton; 113 t)-capacity truck but sometimes a 150-short-ton (134-long-ton; 136 t)-capacity one.