|
Tschanz Drive
The Tschanz drive or Oerlikon single-axle drive is a fully sprung single-axle drive for electric locomotives named after its inventor Otto Tschanz or after Maschinenfabrik Oerlikon. The drive was not widely used because its competitor, the Buchli drive, was cheaper and lighter. Construction The Tschanz drive is a fully sprung drive, which means that the motors are housed in the sprung part of the locomotive and are thus less exposed to shocks from the rails. Also, the shocks from the wheelsets to the rail are reduced because there is less unsprung weight on them. The traction motor is firmly mounted in the locomotive frame and drives through a single-stage gearbox to a gear that is located to one side of the wheel. The power transmission from this gear to the axle is done with a cardan shaft which has universal joints at both ends and passes through a hollow axle. Use Rolling stock on which the Tschanz drive was used include: * SBB-CFF-FFS Be 2/5 * SBB-CFF-FFS Ae 4/8 * BTB BCe 2/ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Locomotive
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor. Locomotives with on-board fuelled prime movers, such as diesel engines or gas turbines, are classed as diesel-electric or gas turbine-electric and not as electric locomotives, because the electric generator/motor combination serves only as a power transmission system. Electric locomotives benefit from the high efficiency of electric motors, often above 90% (not including the inefficiency of generating the electricity). Additional efficiency can be gained from regenerative braking, which allows kinetic energy to be recovered during braking to put power back on the line. Newer electric locomotives use AC motor-inverter drive systems that provide for regenerative braking. Electric locomotives are quiet compared to diesel locomotives since there is no engine and exhaust noise and less mechanical noise. The lack of re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maschinenfabrik Oerlikon
Maschinenfabrik Oerlikon was a Swiss engineering company based in the Zürich district of Oerlikon known for the early development of electric locomotives. It was founded in 1876 by the industrialist Peter Emil Huber-Werdmüller, and occupied a large site immediately to the west of Oerlikon railway station. In 1906 the armaments business was demerged to form ', which evolved into the technology company OC Oerlikon and the armaments company Rheinmetall Air Defence (formerly ''Oerlikon Contraves''). In 1967 Maschinenfabrik Oerlikon was taken over by Brown, Boveri & Cie, which in 1988 merged with ASEA to form ABB Group. The site of the company's works has been redeveloped, including the innovative public MFO-Park The MFO-Park is a public park in the Oerlikon quarter of the Swiss city of Zürich. The area to the north of Zürich Oerlikon railway station was once home to the extensive works of ''Maschinenfabrik Oerlikon'' (MFO), as site that has now been .... In the seco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buchli Drive
The Buchli drive is a transmission system used in electric locomotives. It was named after its inventor, Swiss engineer Jakob Buchli. The drive is a fully spring-loaded drive, in which each floating axle has an individual motor, that is placed in the spring mounted locomotive frame. The weight of the driving motors is completely disconnected from the driving wheels, which are exposed to movement of the rails. First used in electric locomotives from the 1920s, the Buchli drive made possible the construction of faster and more powerful locomotives that required larger and heavier traction motors. The system minimises the impact on rail tracks due to the reduction in the overall unsprung weight. Although the drive was very successful though the 1930s, it is little used in modern locomotives, having been replaced with smaller, simpler drives that exhibit less imbalance and allow higher speeds. Construction In a Buchli drive a driven gear wheel is securely fixed to the locomotive f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SBB-CFF-FFS Be 2/5
Swiss Federal Railways (german: link=no, Schweizerische Bundesbahnen, ''SBB''; french: link=no, Chemins de fer fédéraux suisses, ''CFF''; it, Ferrovie federali svizzere, ''FFS'') is the national railway company of Switzerland. It is usually referred to by the initials of its German, French, and Italian names, either as SBB CFF FFS, or used separately. The Romansh version of its name, ''Viafiers federalas svizras'', is not officially used. The official English abbreviation is "SBB", instead of the English acronym such as "SFR", which stands for ''Swiss Federal Railways'' itself. The company, founded in 1902, is headquartered in Bern. It used to be a government institution, but since 1999 it has been a special stock corporation whose shares are held by the Swiss Confederation and the Swiss cantons. It is currently the largest rail and transport company of Switzerland, and operates on most standard gauge lines of the Swiss network. It also heavily collaborates with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SBB-CFF-FFS Ae 4/8
The Ae 4/8 was a prototype locomotive of the Schweizerischen Bundesbahnen (Swiss Federal Railways) (SBB) for the testing of electrical operation. The locomotive was equipped with two different drives, therefore acquiring the nickname ''Bastard''. Because of its three-part locomotive body it also acquired the nickname '' Tatzelwurm''. History During the First World War the SBB decided to establish electric operation on their main lines as fast as possible, in order to become independent of coal supplies which had to be obtained from their warring neighbouring countries. Since electric traction technology was still new, suitable locomotive configurations had to be found. Therefore, the SBB ordered several prototype locomotives. In addition to the Be 3/5 12201, Be 4/6 12301, Be 4/6 12302 and Ce 6/8I 14201 with coupling rods, the SBB procured the Be 2/5 prototype locomotive with fully spring-loaded drives. When tested in the operational environment, this locomotive turned out ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quill Drive
A quill is a writing tool made from a moulted flight feather (preferably a primary wing-feather) of a large bird. Quills were used for writing with ink before the invention of the dip pen, the metal-Nib (pen), nibbed pen, the fountain pen, and, eventually, the ballpoint pen. As with the earlier reed pen (and later dip pen), a quill has no internal ink reservoir and therefore needs to periodically be dipped into an inkwell during writing. The hand-cut goose quill is rarely used as a Western calligraphy, calligraphy tool anymore because many papers are now derived from Pulp (paper), wood pulp and would quickly wear a quill down. However, it is still the tool of choice for a few scribes who have noted that quills provide an unmatched sharp stroke as well as greater flexibility than a steel pen. Description The shaft of a flight feather is long and hollow, making it an obvious candidate for being crafted into a pen. The process of making a quill from a feather involves Curing (che ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Locomotives
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor. Locomotives with on-board fuelled prime movers, such as diesel engines or gas turbines, are classed as diesel-electric or gas turbine-electric and not as electric locomotives, because the electric generator/motor combination serves only as a power transmission system. Electric locomotives benefit from the high efficiency of electric motors, often above 90% (not including the inefficiency of generating the electricity). Additional efficiency can be gained from regenerative braking, which allows kinetic energy to be recovered during braking to put power back on the line. Newer electric locomotives use AC motor-inverter drive systems that provide for regenerative braking. Electric locomotives are quiet compared to diesel locomotives since there is no engine and exhaust noise and less mechanical noise. The lack of rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Locomotives Of Switzerland
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of positiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
