Radial steering truck
Encyclopedia
A Radial steering truck is a type of bogie
used on locomotive
s. On railroad equipment, "trucks" are the wheel assemblies that the train rides the rails on. Trucks are found on almost all train equipment with the exception of some steam locomotive
s (e.g. a 0-6-0
). On diesel locomotive
s, unlike freight or passenger cars, the trucks are powered, with an electric motor
mounted on the truck connected to the driving wheel
s.
On locomotives, these trucks may have three or possibly four axles, making the truck quite long. Such a long truck makes it difficult for the wheels to go around curves. To solve this problem, Electro-Motive Diesel (EMD) designed the Radial Steering Truck. This design allows the wheels to pivot around the center of the curve somewhat, allowing less wear on the wheel flange
s and rails.
Bogie
A bogie is a wheeled wagon or trolley. In mechanics terms, a bogie is a chassis or framework carrying wheels, attached to a vehicle. It can be fixed in place, as on a cargo truck, mounted on a swivel, as on a railway carriage/car or locomotive, or sprung as in the suspension of a caterpillar...
used on locomotive
Locomotive
A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco – "from a place", ablative of locus, "place" + Medieval Latin motivus, "causing motion", and is a shortened form of the term locomotive engine, first used in the early 19th...
s. On railroad equipment, "trucks" are the wheel assemblies that the train rides the rails on. Trucks are found on almost all train equipment with the exception of some steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...
s (e.g. a 0-6-0
0-6-0
Under the Whyte notation for the classification of steam locomotives, 0-6-0 represents the wheel arrangement of no leading wheels, six powered and coupled driving wheels on three axles, and no trailing wheels...
). On diesel locomotive
Diesel locomotive
A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...
s, unlike freight or passenger cars, the trucks are powered, with an electric motor
Traction motor
Traction motor refers to an electric motor providing the primary rotational torque of a machine, usually for conversion into linear motion ....
mounted on the truck connected to the driving wheel
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...
s.
On locomotives, these trucks may have three or possibly four axles, making the truck quite long. Such a long truck makes it difficult for the wheels to go around curves. To solve this problem, Electro-Motive Diesel (EMD) designed the Radial Steering Truck. This design allows the wheels to pivot around the center of the curve somewhat, allowing less wear on the wheel flange
Flange
A flange is an external or internal ridge, or rim , for strength, as the flange of an iron beam such as an I-beam or a T-beam; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera; or for a flange of a rail car or tram wheel...
s and rails.
External links
- http://emdiesels.com/lms/emdweb/products/radial_truck.jsp