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Ballast cleaning removes this worn ballast, screens it and replaces the "dirty" worn ballast with fresh ballast. [ 3 ] [ 4 ] The advantage of ballast cleaning is that it can be done by an on-track machine without removing the rail and sleepers , and it is therefore cheaper than a total excavation.
The plow has a vertical wedge to push the snow horizontally away from the track. The vertical wedge may be less acute than the horizontal wedge, but often included a cast or sheet metal cutting edge on wooden plows. Pushing snow horizontally off the track may create an unbalanced horizontal force where asymmetrical snow accumulation is encountered.
Principle of rope-shovel operation [1]. A power shovel, also known as a motor shovel, stripping shovel, front shovel, mining shovel or rope shovel, [2] is a bucket-equipped machine usually powered by steam, diesel fuel, gasoline or electricity and used for digging and loading earth or fragmented rock and for mineral extraction. [3]
A refrigerator car (or "reefer") is a refrigerated boxcar (U.S.), a piece of railroad rolling stock designed to carry perishable freight at specific temperatures. Refrigerator cars differ from simple insulated boxcars and ventilated boxcars (commonly used for transporting fruit ), neither of which are fitted with cooling apparatus.
Jackson 6700 switch tamping machine A Plasser & Theurer 09-16 CSM Tamper / Liner A MATISA tamper at Keighley in February 2017 Customer VolkerRail. A tamping machine or ballast tamper, informally simply a tamper, is a self-propelled, rail-mounted machine used to pack (or tamp) the track ballast under railway tracks to make the tracks and roadbed more durable and level.
A track renewal train in Pennsylvania Video of a track renewal train north of Cologne, Germany. A track renewal train (also known as a track renewal system or new track construction machine) is a work train that consists of many units of machinery and materials required for track renewal (rail and sleeper replacement) projects.
A track geometry car (also known as a track recording car) is an automated track inspection vehicle on a rail transport system used to test several parameters of the track geometry without obstructing normal railroad operations. Some of the parameters generally measured include position, curvature, alignment of the track, smoothness, and the ...
Unlike the earlier single cylinder tractor made by Hornsby, this was a twin cylinder, with the cylinders at an angle to each other in a vertical plane and sharing a common crankshaft. The engine ran at 350 rpm and had a governor which operated by cutting the fuel supply in a hit and miss method, though the driver could override the governor for ...