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Digital Automatic Coupling
Digital automatic coupling (DAC) has been developed in the 2020s to replace the English Buffers and chain couplings, initially in Europe. It resembles the Scharfenberg coupler with extra contacts to join electrical circuits (power, detection and control) and air hoses. Advantages * Longer trains up to 750m. * Brakes remotely controlled like ECPB. * Monitoring of train and wagon performance. * Safety. No need for shunter to climb between buffers. Other systems Couplings based on AAR and SA3 already have automated mechanical couplings, so do some of the advantageous features of DAC are lessened. These have a maximum draw gear load well in excess of that possible with the DAC, say 1800m instead of 750m. Makers * Dellner * Knorr Bresme Videos * Demonstration of DAC 1 * Demonstration of DAC 2 See also * Railway coupling * Railway coupling by country The railcar couplers or couplings listed, described, and depicted below are used worldwide on legacy and modern railwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buffers And Chain
Buffers and chain couplers (also known as "buffers and screw", "screw", "screwlink", and "English" couplers) are the de facto UIC standard railway stock coupling used in the EU and UK, and on some surviving former colonial railways, such as in South America and India, on older rolling stock. Buffers and chain couplers are an assembly of several devices: buffers, hooks and links, or turnbuckle screws. On the modern version of the couplers, rail vehicles are mated by manually connecting the end link of one chain which incorporates a turnbuckle screw into the towing hook of the other wagon, drawing together and slightly compressing the buffer pairs, one left and one right on each headstock. That limits slack, and lessens shunting shocks in moving trains. By contrast, vehicles fitted with the semi-automatic Janney Type E coupler can experience significant jarring during mating and shunting. Very early rolling stock had "dummy buffers", which were simple rigid extensions of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scharfenberg Coupler
The Scharfenberg coupler (german: Scharfenbergkupplung, abbreviated ''Schaku'') is a commonly used type of fully automatic railway coupling. Designed in 1903 by Karl Scharfenberg in Königsberg, Germany (today Kaliningrad, Russia), the coupler has gradually spread from transit trains to regular passenger service trains, although outside Europe its use is generally restricted to mass transit systems. The ''Schaku'' is superior in many ways to the AAR (Janney/knuckle) coupler because it also automates electrical and pneumatic connections and disconnections. However, there is no standard for the placement of these electro-pneumatic connections. Some rail operators have placed them on the sides while others have placed them either below or above the mechanical portion of the coupler. . Working principles The face of the Scharfenberg coupler has a protruding cone and a matching cup. Inside the cone there is a rigid metal hoop connected to a revolving, spring-loaded metal disk with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ECPB
Electronically controlled pneumatic brakes are a type of modern railway braking system which offer improved performance compared to traditional railway air brakes. Overview Traditional train braking systems use pneumatic valves to control and generate brake applications on the cars along the length of the train. In general, this conventional system consists of a brake pipe that runs the length of the train which supplies air to reservoirs mounted on each of the cars. When the brake pipe and car components are charged with air, the brakes release. When the engineer needs to make a brake application, control valves in the locomotive reduce the brake pipe pressure. As the brake pipe pressure reduces, the service portion on each car diverts air from their reservoirs to their brake cylinders. To release the brakes, the engineer charges the brake pipe. This method of controlling the brakes on freight and passenger cars has remained virtually unchanged since its invention by George W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shunter
A switcher, shunter, yard pilot, switch engine, yard goat, or shifter is a small railroad locomotive used for manoeuvring railroad cars inside a rail yard in a process known as ''switching'' (US) or ''shunting'' (UK). Switchers are not intended for moving trains over long distances but rather for assembling trains in order for another locomotive to take over. They do this in classification yards (Great Britain: ''marshalling yards''). Switchers may also make short transfer runs and even be the only motive power on branch lines and switching and terminal railroads. The term can also be used to describe the workers operating these engines or engaged in directing shunting operations. Switching locomotives may be purpose-built engines, but may also be downgraded main-line engines, or simply main-line engines assigned to switching. Switchers can also be used on short excursion train rides. The typical switcher is optimised for its job, being relatively low-powered but with a high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AAR Coupler
AAR or Aar may refer to: Geography *Aar, a river in Switzerland, tributary of the Rhine *Aar (Lahn), a tributary of Lahn river in Germany, descending from the Taunus mountains *Aar (Dill), a tributary of Dill river in Germany, also in the basin of the Lahn *Aar (Ill), a branch of the Ill river that separates from it in Strasbourg, France and rejoins it further north *Aar (Twiste), a tributary of Twiste river in Germany, in the basin of the Weser *Aar (village), a village in Rajasthan, India * South American–Antarctic Ridge, also known as the American–Antarctic Ridge, a mid-ocean ridge in the South Atlantic *Antarctica, IAAF code AAR Military * After-action review, a structured review process used by the U.S. military * After action report, a retrospective analysis * Air-to-air refueling, the process of transferring aviation fuel from one military aircraft to another during flight * Assistant Automatic Rifleman, a soldier who carries ammunition, see Rifleman#Modern_tacti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SA3 Coupler
SA3 couplers (also known as СА3 or СА-3 couplers per the typical foundry stamp on top of these couplers, meaning "Советская Автосцепка, 3" in Russian or "Soviet Auto-latch 3" in English) or Willison coupler and Russian coupler are railway couplings used primarily in Russia and states influenced or not influenced by the former Soviet Union, such as Finland, Iran, Poland and Mongolia. Russian railways originally used buffers and chain couplers during Imperial era, however these had several disadvantages: their draft load was limited, they were susceptible to buffer lock, and they were not semiautomatic like the North American Janney couplers. Conversion to Janney couplers (as Japan and Australia had) was considered, as was development of a new design. The Willison coupler was patented in 1916 by John Willison from Derby, England. The Knorr-Bremse company bought it and it started to be used in Germany for some heavy trains and some suburban trains in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dellner
Dellner Couplers AB is a Swedish original equipment manufacturer of train connection systems as couplers, gangway systems and dampers. The headquarter of the company is located in Vika in the Falun Municipality. Dellner is owned by the investment organisation EQT Partners and has 22 subsidiaries worldwide with more than 1,200 employees. History Dellner was founded in 1941 by the Swedish engineer Jan Dellner. The first customer was Swedish State Railways, for whom the Engineering Bureau Dellner produced automatic couplers. In the following years, the company, based in the small town of Vika in central Sweden, expanded its business and supplied automatic couplers to numerous customers in Europe, such as the Warsaw Metro, Paris Metro, SNCF, Rome Metro and Italian State Railways. From 1982 onwards, train couplers were also supplied to countries outside Europe. At that time Dellner had a total of 80 employees in Sweden, the US and Canada. From 1984 Dellner was the first manufac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knorr Bresme , an intramolecular o ...
Knorr may refer to: * Knorr (surname) *Knorr (brand), a brand of foods and beverages, particularly known for dehydrated broth * Knorr-Bremse, manufacturer of braking systems for rail and commercial vehicles * R/V ''Knorr'', the ship used to find the wreck of the ''Titanic'' * Knorr Arena, in Heilbronn, Germany *Knorr, older spelling of Knarr, a type of Viking cargo ship *Koenigs–Knorr reaction, the substitution reaction of a glycosyl halide with an alcohol to give a glycoside * Knorr pyrrole synthesis, a widely used chemical reaction that synthesizes substituted pyrroles *Paal–Knorr synthesis, a reaction that generates either furans, pyrroles, or thiophenes from 1,4-diketones *Knorr quinoline synthesis The Knorr quinoline synthesis is an Intramolecular reaction, intramolecular organic reaction converting a anilide, β-ketoanilide to a 2-hydroxyquinoline using sulfuric acid. This reaction was first described by Ludwig Knorr (1859–1921) in 1886 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is a global online video sharing and social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by Google, and is the second most visited website, after Google Search. YouTube has more than 2.5 billion monthly users who collectively watch more than one billion hours of videos each day. , videos were being uploaded at a rate of more than 500 hours of content per minute. In October 2006, YouTube was bought by Google for $1.65 billion. Google's ownership of YouTube expanded the site's business model, expanding from generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by YouTube. It also offers YouTube Premium, a paid subscription option for watching content without ads. YouTube also approved creators to participate in Google's AdSense program, which seeks to generate more revenue for both parties. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Coupling
A coupling (or a coupler) is a mechanism typically placed at each end of a railway vehicle that connects them together to form a train. A variety of coupler types have been developed over the course of railway history. Key issues in their design include strength, reliability, ease of making connections and operator safety. The equipment that connects the couplings to the vehicles is the draft gear or draw gear and these must absorb the stresses of coupling and train acceleration. Nomenclature Compatible and similar couplings or couplers are frequently referred to using widely differing make, brand, or regional names, or nicknames, which can make describing standard or typical designs confusing. Dimensions and ratings noted in these articles are usually of nominal or typical components and systems, though standards and practices also vary widely with railway, region, and era. Buffers and chain The basic type of coupling on railways following the British tradition is the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Coupling By Country
The railcar couplers or couplings listed, described, and depicted below are used worldwide on legacy and modern railways. Compatible and similar designs are frequently referred to using widely differing make, brand, regional or nick names, which can make describing standard or typical designs confusing. Dimensions and ratings noted in these articles are usually of nominal or typical components and systems, though standards and practices also vary widely with railway, region, and era. Transition between incompatible coupler types may be accomplished using dual couplings, a coupling adapter or a barrier wagon. Coupler types * ABC coupler (Automatic Buffing Contact) * Albert coupler * bell and hook coupler * BSI coupler (Bergische Stahl Industrie) * buffers and chain coupler, also known as British, buffers and screw, English, EU, link and hook, UIC, or UK coupler * center buffer and chains coupler * Digital Automatic Coupler (DAC) * GF coupler * Henricot coupler * H2C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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