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- Ballast_cleaner abstract "A ballast cleaner (also known as an undercutter) is a machine that specialises in cleaning the railway track ballast (gravel, blue stone or other aggregate) of impurities.Over time, ballast becomes worn, and loses its angularity, becoming rounded. This hinders the tessellation of pieces of ballast with one another, and thus reduces its effectiveness. Fine pieces of granite, like sand, are also created by attrition, known simply as "fines". Combined with water in the ballast, these fines stick together, making the ballast like a lump of concrete. This hinders both track drainage and the flexibility of the ballast to constrain the track as it moves under traffic.Ballast cleaning removes this worn ballast, screens it and replaces the "dirty" worn ballast with fresh ballast. 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.A cutter bar runs beneath sleeper level excavating all of the ballast under the sleepers to a specified, variable depth. A conveyor then moves the ballast into the cleaner, where it gets forced through a mesh by a shaking chamber. Pieces of ballast which are smaller than the mesh size fall through and are rejected, those that are bigger than the mesh are returned to the track along with fresh ballast. Some ballast cleaners have both ballast and spoil wagons attached to it, to which the materials are fed by a series of conveyor belts. Others simply undercut the ballast, and allow for a work train to come through to dump fresh ballast. This process can be done in short possessions, meaning that track life can be considerably extended with the minimum of disruption.In 2008, Network Rail (UK) purchased a new 800m long high output ballast cleaner from Plasser and Theurer at a cost of £41.7 million, capable of cleaning 600 yd (0.55 km) in an eight-hour shift.".
- Ballast_cleaner thumbnail Ballast_Cleaner171.jpg?width=300.
- Ballast_cleaner wikiPageExternalLink ballast-cleaners.html.
- Ballast_cleaner wikiPageID "11826030".
- Ballast_cleaner wikiPageLength "3050".
- Ballast_cleaner wikiPageOutDegree "8".
- Ballast_cleaner wikiPageRevisionID "674254254".
- Ballast_cleaner wikiPageWikiLink Category:Maintenance_of_way_equipment.
- Ballast_cleaner wikiPageWikiLink Construction_aggregate.
- Ballast_cleaner wikiPageWikiLink Network_Rail.
- Ballast_cleaner wikiPageWikiLink Plasser_&_Theurer.
- Ballast_cleaner wikiPageWikiLink Plasser_and_Theurer.
- Ballast_cleaner wikiPageWikiLink Railroad_tie.
- Ballast_cleaner wikiPageWikiLink Tessellation.
- Ballast_cleaner wikiPageWikiLink Track_ballast.
- Ballast_cleaner wikiPageWikiLink File:Ballast_Cleaner171.jpg.
- Ballast_cleaner wikiPageWikiLinkText "Ballast cleaner".
- Ballast_cleaner wikiPageWikiLinkText "ballast cleaner".
- Ballast_cleaner hasPhotoCollection Ballast_cleaner.
- Ballast_cleaner wikiPageUsesTemplate Template:Convert.
- Ballast_cleaner wikiPageUsesTemplate Template:Rail-transport-stub.
- Ballast_cleaner wikiPageUsesTemplate Template:Refimprove.
- Ballast_cleaner wikiPageUsesTemplate Template:Reflist.
- Ballast_cleaner subject Category:Maintenance_of_way_equipment.
- Ballast_cleaner hypernym Machine.
- Ballast_cleaner type Article.
- Ballast_cleaner type Software.
- Ballast_cleaner type Article.
- Ballast_cleaner type Vehicle.
- Ballast_cleaner comment "A ballast cleaner (also known as an undercutter) is a machine that specialises in cleaning the railway track ballast (gravel, blue stone or other aggregate) of impurities.Over time, ballast becomes worn, and loses its angularity, becoming rounded. This hinders the tessellation of pieces of ballast with one another, and thus reduces its effectiveness. Fine pieces of granite, like sand, are also created by attrition, known simply as "fines".".
- Ballast_cleaner label "Ballast cleaner".
- Ballast_cleaner sameAs Bettungsreinigungsmaschine.
- Ballast_cleaner sameAs Kettinghor.
- Ballast_cleaner sameAs m.02rtsr5.
- Ballast_cleaner sameAs Щебнеочистительная_машина.
- Ballast_cleaner sameAs Q304359.
- Ballast_cleaner sameAs Q304359.
- Ballast_cleaner wasDerivedFrom Ballast_cleaner?oldid=674254254.
- Ballast_cleaner depiction Ballast_Cleaner171.jpg.
- Ballast_cleaner isPrimaryTopicOf Ballast_cleaner.