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SBB Re 620
The Re 620, Re 6/6 in the old Swiss locomotive and railcar classification, numbering scheme, are six-axle, electric locomotives of Swiss Federal Railways (SBB CFF FFS), which were acquired as a replacement for the SBB Ae 6/6, Ae 6/6 for heavy services on the Gotthard Railway. They were produced between 1972 and 1980 and are the most modern of the so-called "Gotthard locomotives". Construction and Technology To reach the necessary traction (mechanics), tractive effort, a construction comprising six driven axles was necessary. In order to still get good running characteristics in curves, they were built into three two-axle bogies instead of two three-axle bogies as on the SBB Ae 6/6, Ae 6/6. The middle bogie can move sideways, and the three bogies are connected by elastic cross couplings. Two of the four prototypes (11601, 11602) were built with a articulated locomotive, split locomotive body, whereby the joint may only move on an horizontal transverse axis to allow for changes in g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SBB Re 420
The Re 420, originally and still widely called Re 4/4II, are a series of versatile standard gauge electric locomotives of Swiss Federal Railways (SBB CFF FFS), but are also used by BLS AG (BLS Re 420.5) and private companies (previously also by the Swiss ''Südostbahn'', SOB). They were produced over a period of 21 years, from 1964 to 1985, and are currently used mainly for rail freight transport, freight operations but still also for some push-pull train, push-pull passenger train services. It is the largest series of locomotives of Swiss Federal Railways, and they are the most common type of locomotive in Switzerland. The Re 420 LION are refurbished Re 420 engines used for peak-hour commuter rail services of Zurich S-Bahn. The Re 421 is an upgraded version built for cross-border operations. The Re 430 (Re 436 of private companies), originally known as the Re 4/4III, are a derivative of the Re 420, modified for higher traction (mechanics), traction but lower speed. Operations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prototype
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and Software prototyping, software programming. A prototype is generally used to evaluate a new design to enhance precision by system analysts and users. Prototyping serves to provide specifications for a real, working system rather than a theoretical one. Physical prototyping has a long history, and paper prototyping and virtual prototyping now extensively complement it. In some design workflow models, creating a prototype (a process sometimes called materialization) is the step between the Formal specification, formalization and the evaluation of an idea. A prototype can also mean a typical example of something such as in the use of the derivation prototypical. This is a useful term in identifying objects, behaviours and concepts which are considered the accepted norm and is analogous with terms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SBB Re 460
The Re 460, popularly known as the ''Lok 2000'', are a class of modern four-axle electric locomotives of Swiss Federal Railways (SBB CFF FFS), similar to the Re 465 of BLS. Although designed as multipurpose locomotives, the Re 460 are now used only for hauling long-distance passenger trains in Switzerland (one service to ). Variants of the Re 460 are used in China, Finland, India and Norway. The Lok 2000-family locomotives are the last mainline locomotives to be quasi fully developed and produced by Swiss companies. Locomotive construction in Switzerland has since been largely discontinued for economic reasons. Only Stadler Rail still manufactures shunting and rack railway locomotives in the country. Assignment The series was introduced as part of the Rail 2000 project, a massive project to modernise and improve the capacity of Switzerland's railways. Upon their entry into service in the early 1990s, they replaced the , Ae 4/7, and series units, and displaced many of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union Of Railways
The International Union of Railways (, UIC) is an international rail transport industry body based in Paris. History The railways of Europe had originated during the nineteenth century as many separate concerns across numerous nations; this led to disparate and conflicting standards emerging and thus onto incompatibility. One prominent example was the British Gauge War, during which different rail transport, railway companies were laying different track gauges across Great Britain, causing inefficiency wherever a break of gauge occurred, prior to an Regulating the Gauge of Railways Act 1846, Act of Parliament the issue in 1846 by establishing one standard gauge of . The early effort towards standardisation somewhat influenced railways aboard as well, however various other track gauges persisted and developed across the world; even through to the twenty first century, incompatible track gauges, let alone other issues, persisted to hinder interoperability efforts. Several key eve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Coupling
A coupling or coupler is a mechanism, typically located at each end of a rolling stock, rail vehicle, that connects them together to form a train. The equipment that connects the couplers to the vehicles is the draft gear or draw gear, which must absorb the stresses of the coupling and the acceleration of the train. Throughout the history of rail vehicles, a variety of coupler designs and types have been developed worldwide. Key design considerations include strength, reliability, easy and efficient handling, and operator safety. Automatic couplers engage automatically when the cars are pushed together. Modern versions not only provide a mechanical connection, but can also couple brake lines and data lines. Different countries use different types of couplers. While North American railroads and China use Janney couplers, railroads in the former Soviet Union use SA3 couplers and the European countries use Scharfenberg coupler, Scharfenberg and Buffers and chain coupler, screw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bank Engine
A bank engine (United Kingdom/Australia) (colloquially a banker), banking engine, helper engine or pusher engine (North America) is a railway locomotive that temporarily assists a train that requires additional power or traction to climb a gradient (or ''bank''). Helpers/bankers are most commonly found in mountain divisions (called "helper districts" in the United States), where the ruling grade may demand the use of substantially greater motive power than that required for other grades within the division. Historic practice Helpers/bankers were most widely used during the age of steam, especially in the American West, where significant grades are common and trains are long. The development of diesel-electric or electric locomotives has eliminated the everyday need for bankers/helpers in all but a few locations. With the advent of dynamic brakes on electric or diesel-electric locomotives, helpers/bankers can also be used to provide more braking force on long downhill gradi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade (slope)
The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line is either the elevation angle of that surface to the horizontal plane, horizontal or its tangent. It is a special case of the slope, where zero indicates horizontal plane, horizontality. A larger number indicates higher or steeper degree of "tilt". Often slope is calculated as a ratio of "rise" to "run", or as a fraction ("rise over run") in which ''run'' is the horizontal distance (not the distance along the slope) and ''rise'' is the vertical distance. Slopes of existing physical features such as canyons and hillsides, bank (geography), stream and river banks, and stream bed, beds are often described as grades, but typically the word "grade" is used for human-made surfaces such as roads, landscape grading, roof pitches, rail tracks, railroads, aqueduct (watercourse), aqueducts, and pedestrian or bicycle routes. The grade may refer to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Freight Transport
Rail freight transport is the use of railways and trains to transport cargo as opposed to human passengers. A freight train, cargo train, or goods train is a group of freight cars (US) or goods wagons (International Union of Railways) hauled by one or more locomotives on a railway, transporting cargo all or some of the way between the shipper and the intended destination as part of the logistics chain. Trains may haul bulk material handling, bulk material, intermodal containers, general freight or specialized freight in purpose-designed cars. Rail freight practices and economics vary by country and region. When considered in terms of ton-miles or tonne-kilometers hauled, Energy efficiency in transport#Trains, energy efficiency can be greater with rail transportation than with other means. Maximum economies are typically realized with bulk commodities (e.g., coal), especially when hauled over long distances. Moving goods by rail often involves transshipment costs, particularly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SBB RBe 540
Starting in 1959, the SBB motor coach of the type RBe 4/4 (designation at last RBe 540) was for a replacement of the old SBB electric locomotives Ae 3/6 I, Ae 3/6 II, Ae 3/6 III and SBB Ae 3/5 with three driving axles. As a consequence, they had much power at their disposal, even more than the Re 4/4 I locomotives, a regenerative brake, cabs on both ends with doors to passenger carriages as well as Multiple-unit train control SBB Vst IIId for multiple-unit or driving trailer. They originally motor coach had 64 seats, 32 smoking and 32 non-smoking, and were painted in ordinary ''SBB green''. The first six prototypes, each costing one million Swiss francs, were delivered 1959 and 1960, and first shown to the press at 24 May 1959. The prototypes had some issues which were fixed until the series production. The series units were four tonnes heavier, and 76 units were ordered, which were put into service between 1963 and 1966. Most of the technical equipment is installed below ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SBB Re 4/4 IV
SBB may refer to: Arts and entertainment * SBB (band), a Polish progressive rock band, or their self-titled albums: ** ''SBB'' (1974 album) ** ''SBB'' (1978 album, Amiga) * Seán Bán Breathnach, also known as SBB, Irish TV personality * ''Saas Bahu aur Betiyaan'', a television programme on the Indian channel Aaj Tak * Soldier Boy Ben, a superhero in the third season of the television series ''The Boys'' Companies * Swiss Federal Railways () * Serbia Broadband (, ), a cable television and broadband internet service provider in Serbia Technology * Solid bleached board, a paperboard grade * Storage Building Block, an individual tape or disk drive component used in a computer data storage array or library * SwiftBroadband, a satellite-based communication network for aircraft * Screened Bottom Board, also known as Open Mesh Floor, a device used to protect beehives from ''Varroa destructor'' mites Others * Saxon Climbers' Federation (), now part of the German Alpine Club * B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transformer
In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple Electrical network, circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force, electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil. Transformers are used to change Alternating current, AC voltage levels, such transformers being termed step-up or step-down type to increase or decrease voltage level, respectively. Transformers can also be used to provide galvanic isolation between circuits as well as to couple stages of signa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
