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Compensating Beam
An equalising beam, equalising lever or equalising bar (British: compensating beam) links the suspension of two or more adjacent axles of a vehicle, especially a railway locomotive. On steam locomotives On steam locomotives, the beam is connected at each end to a spring on an axle or to the end of another equalising beam (usually via a vertical spring hanger) to distribute the locomotive's weight between two or more axles. An equalising system links not only the driving-wheel axles but also the trailing and/or leading truck axle(s). Its purpose is to prevent inequalities in the track or roadbed putting an excessive load on an axle. There is one system on each side of the locomotive; on some steam locomotives, there may also be a transverse equalising system connecting them. On diesel locomotives On a contemporary diesel locomotive, equalising is confined to each bogie (US: truck); there is no linkage between bogies, which are inherently flexible compared with steam locomotiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suspension (vehicle)
Suspension is the system of tires, tire air, spring (device), springs, shock absorbers and Linkage (mechanical), linkages that connects a vehicle to its wheels and allows relative motion between the two. Suspension systems must support both road holding/Automobile handling, handling and ride quality, which are at odds with each other. The tuning of suspensions involves finding the right compromise. The suspension is crucial for maintaining consistent contact between the road wheel and the road surface, as all forces exerted on the vehicle by the road or ground are transmitted through the tires' contact patches. The suspension also protects the vehicle itself and any cargo or luggage from damage and wear. The design of front and rear suspension of a car may be different. History An early form of suspension on ox-drawn carts had the platform swing on iron chains attached to the wheeled frame of the carriage. This system remained the basis for most suspension systems unti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolling-element Bearing
In mechanical engineering, a rolling-element bearing, also known as a rolling bearing,ISO 15 is a bearing (mechanical), bearing which carries a load by placing rolling elements (such as balls, cylinders, or cones) between two concentric, Groove (engineering), grooved rings called Race (bearing), races. The relative motion of the races causes the rolling elements to rolling, roll with very little rolling resistance and with little sliding (motion), sliding. One of the earliest and best-known rolling-element bearings is a set of logs laid on the ground with a large stone block on top. As the stone is pulled, the logs roll along the ground with little sliding friction. As each log comes out the back, it is moved to the front where the block then rolls onto it. It is possible to imitate such a bearing by placing several pens or pencils on a table and placing an item on top of them. See "bearing (mechanical), bearings" for more on the historical development of bearings. A rolling el ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
České Dráhy
České dráhy (English: ''Czech Railways''), often shortened to ČD, is the major Rail transport, railway operator in the Czech Republic providing regional and long-distance services. The company was established in January 1993, shortly after the dissolution of Czechoslovakia, as a successor of the Czechoslovak State Railways. It is a member of the International Union of Railways, International Railway Union (UIC Country Code for the Czech Republic is 54), the Community of European Railway and Infrastructure Companies, and the Organization for Cooperation of Railways. With twenty-four thousand employeesAnnual Report of České dráhy, a.s. for the Year 2014, auditor Deloitte Audit s.r.o. ČD Group is the fifth largest Czech company by the number of employees. History In 1827–1836, the Budweis–Linz–Gmunden Horse-Drawn Railway, České Budějovice–Linz railway was built, which was the second Horsecar, horse-drawn railway in continental Europe was established. The first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commonwealth Design Truck (bogie) On South Australian Railways Bluebird Railcar, National Railway Museum Port Adelaide
A commonwealth is a traditional English term for a political community founded for the common good. The noun "commonwealth", meaning "public welfare, general good or advantage", dates from the 15th century. Originally a phrase (the common-wealth or the common wealth – echoed in the modern synonym "public wealth"), it comes from the old meaning of "wealth", which is "well-being", and was deemed analogous to the Latin ''res publica''. The term literally meant "common well-being". In the 17th century, the definition of "commonwealth" expanded from its original sense of "public welfare" or "commonweal" to mean "a state in which the supreme power is vested in the people; a republic or democracy, democratic state". The term evolved to become a title to a number of political entities. Three countries – Australia, the Bahamas, and Dominica – have the official title "Commonwealth", as do four U.S. states and two Territories of the United States, U.S. territories. Since the early 20th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
