Amalgamated Association of Street, Electric Railway & Motor Coach Employees of America . Respondent Lockridge . Docket no. 76 . Decided by Burger Court . Citation 403 US 274 (1971) Argued. Dec 15, 1970. Decided. Jun 14, 1971. Sort: by seniority; by ideology << decision 1 of 1 >>
Rail vehicles need customized traction motors and drives - from Siemens! Siemens offers customized solutions and individual components for an optimal traction performance, low
The global railway traction motor market size is expected to reach a market valuation of US$ 54,554 million by 2033. The market is expected to grow at a steady CAGR of 4.5%. The following are the major factors stimulating the industry growth: Surging Research and Development and allocation of budget to develop the railway sector.
A conventional railway vehicle adopts the rigid-axle wheelset (RW) due to its inherently characteristics of automatic restoration capability without additional actuators or control. RW allows the railway vehicle to run to the center of the rail. However, there is no restoring force in independently rotating wheelsets (IRWs), if only traction torque control is applied
Abstract: This paper presents a review of the current traction motor topologies available in the railway market in two parts. In the first part, essential aspects of the electromagnetic
In this paper, we will review these recent technologies to improve the efficiency of traction motors and give examples of high-efficiency traction motors in use in Japan. 2010
Freight locomotives must be strong enough to start with full load at demanding inclines. Their speed is relatively low, up to 160 km/h, which allows for cost-effective axle-hung mounting of the traction motors. To enable a high tractive effort, the motors have a high torque‑space ratio. Mounting the motor directly to the gearbox and wheel
Additional Pictures. We have additional pictures of Railway Motors and many, many more on file here at the Pioneer Museum! Martin County Historical Society. 304 East Blue Earth Avenue. Fairmont, MN 56031. 507
In 2006, Toshiba commercialized a Permanent Magnet Synchronous Motor (PMSM) that shows a high energy conversion factor as an alternative to Induction Motors (IM) widely used in railway propulsion systems. Presently, we propose a wide range of innovative locomotives and rolling stock systems that can reduce electric power consumption.
Some railway companies, such as the Great Western, termed such vehicles "railmotors" (or "rail motors"). Self-propelled passenger vehicles also capable of hauling a train are, in technical rail usage, more usually called " rail motor coaches " or "motor cars" (not to be confused with the motor cars, otherwise known as automobiles, that operate
The VMT 850GR track motor car is a modern and reliable vehicle designed for performing a complex repair of railway infrastructure located at different heights, within stations, in tunnels, on overpasses or overhead structures. The VMT 850GR track motor car can carry eight workers and can reach speeds of up to 80 km per hour.
Paterson - NSW - Australia. Site last updated - 10 June 2024. This site is best viewed at 1024 x 768 or better. Find us on Facebook. The Rail Motor Society is mainline heritage rail operator preserving and operating rail motor services for the citizens of
3.3. Permanent magnet synchronous motors The invention of high-performance magnet materials has enabled the application of PMSMs to various fields including railway traction. number of high-performance PMSMs have been developed for railway traction. One major merit of the PMSM is its high efficiency.
holds a complete and flexible traction motor portfolio that allows us to build the perfect solution for train operators – regardless of train type, power range or geographical
Design, Modeling, and Analysis of a Railway Traction Motor With Independently Rotating Wheelsets Abstract: A conventional railway vehicle adopts the rigid-axle wheelset (RW)
Traction motors are the key components of complex propulsion systems that drive freight locomotives and passenger transit vehicles. The operational performance of traction motors directly affects the efficiency and dependability of services provided by Rail Transportation and Mass Transit industries. Therefore, reliable, long-lasting traction
In medium-speed railway applications (such as freight or goods locomotives), the Traction motors are connected to Wheel-axle through a gearbox (single-stage or multi-stage reduction), and the whole assembly of the traction motor is mounted on a Suspension Tube also known as MSU (motor suspension unit). Most of the MSUs are
Rail transport (also known as train transport) is a means of transport using wheeled vehicles running in tracks, (150 hp) motors run by three-phase 750 V 40 Hz fed from double overhead lines. Three-phase motors run at a constant speed and provide regenerative braking, and are well suited to steeply graded routes,
A steam railcar, steam motor car (US), or Railmotor (UK) is a railcar that is self powered by a steam engine. The first steam railcar was an experimental unit designed and built in 1847 by James Samuel and William Bridges Adams in Britain. In 1848 they made the Fairfield steam carriage that they sold to the Bristol & Exeter Railway, who used it
Variant 1: GSM 143. Electric Point Machine GSM-143 is a non-trailable Point Machine. It is designed to operate rail points of high speed turnouts with Thick Web Switch (TWS) Blades with external clamp point lock. It is operated electrically and also incorporates an internal point lock and detection mechanism.
In 1909 Frank E. Wade founded Fairmont Railway Motors of Fairmont, Minnesota (renamed the Fairmont Gas Engine and Railway Motor Car Company in 1915), was a manufacturer of rail vehicles formed from the Fairmont Machine Company. In 1928 the company acquired Mudge and Company and in 1955, the railcar interests of the Fairbanks-Morse company (which had purchas
This combined a No 1 boiler with a No 2 chassis to create a representative model of the Southern Railway S14 0-4-0 tank engine. Following on from the success of the 5" gauge locomotives, Don subsequently produced two 7¼/7½" gauge designs. Namely Tug, a simple but robust tank engine, as well as the close to scale Rhymney Rail Motor
Frank Julian Sprague (July 25, 1857 – October 25, 1934) was an American inventor who contributed to the development of the electric motor, electric railways, and electric elevators.His contributions were especially important in promoting urban development by increasing the size cities could reasonably attain (through better transportation) and by
GWR steam rail motors. Restored Steam Railmotor number 93 at Norton Fitzwarren on the West Somerset Railway. The steam rail motors (SRM) were self-propelled carriages operated by the Great Western Railway in England and Wales from 1903 to 1935. They incorporated a steam locomotive within the body of the carriage.
We developed our range of UK outline ringfield motor upgrade kits and adaptors as part of our own railway modelling journey. Having bought one or two second-hand Lima and Hornby locomotives over the years, we often found the performance of their aged ringfield motor (also known as a pancake motor) to be less than satisfactory.
Examples of traction components. Traction transformer LOT 1100. 1.5 MW for 16 2/3 Hz high-speed double-deck trains. Traction transformer LOT 6500/6700. 4.5 MW for 50 Hz AC locomotives. Traction transformer. 4.8 MW for 16 2/3 Hz and 5.2 MW for 50 Hz high-speed trains. Traction motor. 1.2 MW for cargo locomotives.
All-electric traction has several advantages, including lower carbon dioxide (CO 2) emissions and a wide range of control with quick start and stop ( Duffy, 2003,
For traction motors, power density and efficiency are the key properties for railway applications. The most widely used traction motors are induction motors, but there are still a large number of DC motors and synchronous motors in legacy systems, and now, permanent magnet synchronous motors have emerged for several new applications [9,10].
The first L&YR railmotors were two by Kerr Stuart, copies of a design that had already been supplied to the Taff Vale Railway. They were ordered by Hughes in 1904. [1] The locomotive units had transverse boilers of a type similar to the Yorkshire steam wagon, where a single central firebox fed extremely short fire-tubes to a smokebox at each side.
Railway bogies are hardly noticed by the average passenger but they are an essential part of the the train, its drive system and its guidance mechanism. A standard railway vehicle will have two bogies, generally located near the vehicles ends. The motor drives the axle through a pinion/gearwheel set, with the gearwheel pressed onto the axle
The CPH (or 42 foot) railmotors were introduced by the New South Wales Government Railways in 1923 to provide feeder service on country branch lines. Often referred to as "Tin Hares", having evolved at the same time as the mechanical lures used in greyhound racing in Australia, the first vehicle was placed in service on 17 December 1923 and based at
It is more compact than a direct motor, so more power is obtainable for a specified motor size and weight; the 6,000-kg (14,000-pound) alternating-current motor in each truck of a