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Cannon Bearing
A cannon bearing or cannon box bearing is an arrangement of bearings on a shaft, usually an axle, where two bearings are mounted in an enclosed tube. The function of the cannon box is to preserve the alignment of the two bearings, even if the overall tube is allowed to move. The two bearings will retain their same relative position. The bearing tube can be attached to the vehicle frame through either a pivot or springs. The name 'cannon box' derives from the appearance of the hollow tube. Also from the boring machines used to machine the accurately aligned bearing seats, the same machines developed for the boring of cannon and also used for machining the cylinders of steam engines. Cannon box bearings are still found today, although much of the need for them was removed by the development of self-aligning ball bearings. These allow the inner race of a bearing to move independently of its outer, so that each bearing can align to both shaft and housing simultaneously, even if the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bearing (mechanical)
A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may ''prevent'' a motion by controlling the vectors of normal forces that bear on the moving parts. Most bearings facilitate the desired motion by minimizing friction. Bearings are classified broadly according to the type of operation, the motions allowed, or to the directions of the loads (forces) applied to the parts. Rotary bearings hold rotating components such as shafts or axles within mechanical systems, and transfer axial and radial loads from the source of the load to the structure supporting it. The simplest form of bearing, the ''plain bearing'', consists of a shaft rotating in a hole. Lubrication is used to reduce friction. In the ''ball bearing'' and ''roller bearing'', to reduce sliding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coupling Rod
A coupling rod or side rod connects the driving wheels of a locomotive. Steam locomotives in particular usually have them, but some diesel and electric locomotives, especially older ones and shunters, also have them. The coupling rods transfer the power of drive to all wheels. Development Locomotion No. 1 was the first locomotive to employ coupling rods rather than chains. In the 1930s reliable roller bearing coupling rods were developed. Allowance for vertical motion In general, all railroad vehicles have spring suspension; without springs, irregularities in the track could lift wheels off the rail and cause impact damage to both rails and vehicles. Driving wheels are typically mounted so that they have around 1 inch (2.5 cm) of vertical motion. When there are only 2 coupled axles, this range of motion places only slight stress on the crank pins. With more axles, however, provision must be made to allow each axle to move vertically independently of the others without be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LNER Peppercorn Class A1 60163 Tornado
LNER Peppercorn Class A1 No. 60163 ''Tornado'' is a 4-6-2 steam locomotive completed in 2008 to an original design by Arthur Peppercorn. It is the first new build British mainline steam locomotive since 1960, and the only Peppercorn Class A1 in existence after the original batch were scrapped. In 2017, ''Tornado'' became the first steam locomotive to officially reach 100 mph on British tracks in over 50 years. After the project was founded by the A1 Steam Locomotive Trust in 1990, construction of ''Tornado'' began in 1994 and mostly took place at Darlington Works, with other components manufactured elsewhere. The project was financed through fundraising initiatives, public donations, sponsorship deals, and hiring out ''Tornado'' itself for special services. The locomotive was granted its mainline certificate in January 2009, having been designed in compliance with modern safety and certification standards''. Tornado'' has worked on heritage and mainline trains across ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BR Standard Class 8
The BR Standard Class 8 was a class of a single 4-6-2 ''Pacific'' steam locomotive designed by Robert Riddles for use by British Railways. Only the prototype was constructed, named ''Duke of Gloucester''. Constructed at Crewe Works in 1954, the ''Duke'', as it is popularly known, was a replacement for the destroyed LMS Princess Royal Class locomotive number 46202 ''Princess Anne'', which was involved in the Harrow and Wealdstone rail crash of 1952. The ''Duke'' was based on the BR Standard Class 7 ''Britannia'' design. It incorporated three sets of modified Caprotti valve gear, relatively new to British locomotive engineering and more efficient than Walschaerts or Stephenson valve gear. The ''Duke'' was regarded as a failure by locomotive crews due to its poor steaming characteristics and its heavy fuel consumption. Trials undertaken by British Railways also returned negative feedback, reporting problems with the poor draughting of the locomotive which resulted in difficulty a ... [...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] |
Jakob Buchli
Jakob Buchli (4 March 1876 – 1 April 1945) was a Swiss design engineer in the field of locomotive construction. Life Jakob Buchli was born in Chur, Switzerland, on 4 March 1876. After his training to be an engineer he worked from 1902 to 1910 for the Swiss Locomotive and Machine Works (''Schweizerische Lokomotiv- und Maschinenfabrik'' or ''SLM'') in Winterthur; from 1907 as its head of the design office. After that he switched to Brown, Boveri & Cie. in Baden, Switzerland, where he was the chief engineer for electric traction until 1924. From 1924 to 1930 he was technical director of the locomotive construction department of the SLM. Amongst his most important designs were the Buchli drive (1918) named after him and used on the SBB Class Ae 4/7 amongst others, the Java bogie, the Winterthur Universal Drive and the duplex bogie for express coaches. He died in Winterthur on 1 April 1945. See also * List of railway pioneers A railway pioneer is someone who has made a sig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Bogie
The Java bogie (german: Java-Drehgestell, Java-Gestell often in Swiss literature), was a bogie for electric locomotives manufactured by the Swiss Locomotive and Machine Works (SLM). It contained a driving wheel and a trailing wheel. It got its name because it was first installed in the 3000 series express train locomotives delivered to the ''Electrische Staats Spoorwegen'' (ESS) on Java in 1925. Technology The planned increase in the maximum speeds on the electrified main lines in Switzerland beyond 100 km/h prompted the SLM designer Jakob Buchli to improve the cornering of the electric locomotives. The Krauss-Helmholtz bogie with its relatively light superstructure was not enough on the winding Swiss routes. As a result of his investigations, the bogie, later called the Java bogie, was created. Its vertical axis of rotation was close to its driven axis, so that the conditions for ''radial adjustment'' in curves were optimal for it: the ''approach angle of'' the wheels a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rigid-framed Electric Locomotive
Rigid-framed electric locomotives were some of the first generations of electric locomotive design. When these began the traction motors of these early locomotives, particularly with AC motors, were too large and heavy to be mounted directly to the axles and so were carried on the frame. One of the initial simplest wheel arrangements for a mainline electric locomotive, from around 1900, was the 1′C1′ arrangement, in UIC classification. Some of these locomotives had their driving wheels coupled with coupling rods, as for steam locomotives. Others had individual motors for each axle, as would later become universal. By the middle of the century, the bogie arrangement for locomotives became more popular and rigid-framed locomotives are now rare, except for small shunters. 1′C1′ 1′C1′ is the UIC classification for a railway locomotive with a wheel arrangement of three coupled driving wheels, with a leading and trailing articulated pony truck. The driving wheels are coup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adams Axle
The Adams axle is a form of radial axle for rail locomotives that enable them to negotiate curves more easily. It was invented by William Bridges Adams and patented in 1865. The invention uses axle boxes that slide on an arc in shaped horn blocks, so allowing the axle to slide out to either side. This is similar to the movement of a Bissell truck, but with the notional centre point of the curve being where the pivot of the truck would be. This design, using slide bearings, is more expensive than one employing a shaft, but takes up less space. Trials In 1865 the Society of Engineers, London, made direct comparison between the radial axle, invented by William Bridges Adams, and a bogie design with an india-rubber Rubber, also called India rubber, latex, Amazonian rubber, ''caucho'', or ''caoutchouc'', as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds. Thailand, Malaysia, and ... central bearing in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LNWR Precedent Class
The London and North Western Railway Precedent Class was a class of seventy steam locomotives originally designed for express passenger work. History They were designed by F. W. Webb and built by the LNWR's Crewe Works between 1874 and 1882. The numbering was haphazard – while the first twenty carried "new" numbers in a solid block, the remaining fifty carried numbers formerly carried by withdrawn locomotives. All seventy carried names from new, and many of these had been used on withdrawn locomotives. Sixty-two of the locomotives were "renewed" (replaced with new locomotives carrying the same number and name) as Improved Precedent class locomotives between 1893 and 1901. The remaining eight were rebuilt as Improved Precedents in the 1890s; they retained their thick frames – the renewals had frames. Two of the unrenewed locomotives were scrapped in 1907, two in the 1910s, with four passing to the London Midland and Scottish Railway in 1923. They were allocated numbers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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