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Tokyo Metro 7000 Series
The is an electric multiple unit (EMU) train type operated by the Tokyo subway operator Tokyo Metro in Tokyo, Japan, between 1974 and 2022. The design is based on the earlier Tokyo Metro 6000 series trains used on the Tokyo Metro Chiyoda Line. Operations 7000 series trainsets operated on the following lines. Formations , the fleet consists of six ten-car sets and 15 eight-car sets, formed as shown below with car 1 at the northern end. 10-car sets only 7102F * Cars 2, 4, and 8 are each fitted with two lozenge-type pantographs. * Car 9 is designated as a moderately air-conditioned car. 8-car sets * Cars 3 and 7 are each fitted with two lozenge-type pantographs. * Car 7 is designated as a moderately air-conditioned car. Interior Passenger accommodation consists of longitudinal bench seating throughout. Cars 2 and 9 in the ten-car sets and cars 2 and 7 in the eight-car sets each have a wheelchair space. Priority seating is provided at the end of each car. File:Tokyo Metr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kawasaki Heavy Industries Rolling Stock Company
is the rolling stock manufacturing subsidiary of Kawasaki Heavy Industries. Since beginning operations in 1906, the company has produced more than 90,000 railroad cars. Products As indicated by the company name, the company mainly produces railroad vehicles. Recently Kawasaki has received orders from customers in foreign countries, including Ireland and the United States. All products manufactured for the US rail market are sold through Kawasaki Rail Car Inc., another division of Kawasaki Heavy Industries. An assembly plant in Lincoln, Nebraska produces fully completed cars and "knocked down" cars. Because of substantial sales to the New York City Subway and various commuter lines, an additional assembly plant was established in Yonkers, New York in 1986 for final assembly of cars built in Lincoln. In November 2020, Kawasaki Heavy Industries announced that it would spin off some of its businesses, including the rolling stock division from October 2021. Japan Railway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minatomirai Line
The Minatomirai 21 Line (みなとみらい21線 ''Minato-mirai-21-sen''), commonly known as the Minatomirai Line (みなとみらい線 ''Minatomirai-sen''), is a subway line in Yokohama, Japan that runs from Yokohama Station to Motomachi-Chūkagai Station through the Minatomirai 21 business district. The line opened in 2004 and is operated by the Yokohama Minatomirai Railway Company. Maps and station numbering use navy blue and the route symbol MM to identify the line. The entire line is underground and goes under the Minato Mirai and Kannai districts, as well as numerous islands made of soft reclaimed land and channels, requiring stations to be constructed deep underground. The original above-ground section of the Tōkyū Tōyoko Line between Yokohama and Sakuragichō stations was abandoned and replaced with a new underground connector line to allow through services onto the newly completed Minatomirai Line. Operations All trains run from Yokohama Station to Motomachi-Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tokyo Metro 6000 Series
The was an electric multiple unit (EMU) train type operated by the Tokyo subway operator Tokyo Metro on the Tokyo Metro Chiyoda Line in Tokyo, Japan from 1971 to 2018. A number of trainsets have been exported to Indonesia for use by Kereta Commuter Indonesia following their withdrawal in Japan. The trains have 20 m aluminium 4-door cars, and are used on the Chiyoda Line, as well as Odakyu Odawara Line, and Joban Line (all-stations "local" services). The sole three-car set was used on the Chiyoda Line Kita-Ayase branch line. Fleet * 6000: 1st prototype (1968) * 6101: 2nd prototype (1969) * 6102–6121: full production 1st–3rd full-production batch type * 6122–6135: full production 4th–7th full-production batch type , the remaining fleet still operating in Japan consisted of 2 ten-car sets (sets 02 and 30). The 6000 series was scheduled for its final commercial operation on 13 October 2018. They were finally retired from service on 11 November 2018, after their final seas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Multiple Unit
An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a number of the carriages. An EMU is usually formed of two or more semi-permanently coupled carriages, but electrically powered single-unit railcars are also generally classed as EMUs. The great majority of EMUs are passenger trains, but versions also exist for carrying mail. EMUs are popular on commuter and suburban rail networks around the world due to their fast acceleration and pollution-free operation. Being quieter than diesel multiple units (DMUs) and locomotive-hauled trains, EMUs can operate later at night and more frequently without disturbing nearby residents. In addition, tunnel design for EMU trains is simpler as no provision is needed for exhausting fumes, although retrofitting existing limited-clearance tunnels to accommodate the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railway Coupling
A coupling (or a coupler) is a mechanism typically placed at each end of a railway vehicle that connects them together to form a train. A variety of coupler types have been developed over the course of railway history. Key issues in their design include strength, reliability, ease of making connections and operator safety. The equipment that connects the couplings to the vehicles is the draft gear or draw gear and these must absorb the stresses of coupling and train acceleration. Nomenclature Compatible and similar couplings or couplers are frequently referred to using widely differing make, brand, or regional names, or nicknames, which can make describing standard or typical designs confusing. Dimensions and ratings noted in these articles are usually of nominal or typical components and systems, though standards and practices also vary widely with railway, region, and era. Buffers and chain The basic type of coupling on railways following the British tradition is the bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Train Stop
Automatic train stop or ATS is a system on a train that automatically stops a train if certain situations occur (unresponsive train operator, earthquake, disconnected rail, train running over a stop signal, etc.) to prevent accidents. In some scenarios it functions as a type of dead man's switch. Automatic train stop differs from the concept of Automatic Train Control in that ATS usually does not feature an onboard speed control mechanism. Overview Mechanical systems The invention of the fail-safe railway air brake provided an external means for stopping a train via a physical object opening a valve on the brake line to the atmosphere. Eventually known as ''train stops'' or ''trip stops'', the first mechanical ATS system was installed in France in 1878 with some railroads in Russia following suit using a similar system in 1880. In 1901 Union Switch and Signal Company developed the first North American automatic train stop system for the Boston Elevated Railway. This system was so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CS-ATC
Automatic train control (ATC) is a general class of train protection systems for railways that involves a speed control mechanism in response to external inputs. For example, a system could effect an emergency brake application if the driver does not react to a signal at danger. ATC systems tend to integrate various cab signalling technologies and they use more granular deceleration patterns in lieu of the rigid stops encountered with the older automatic train stop (ATS) technology. ATC can also be used with automatic train operation (ATO) and is usually considered to be the safety-critical part of a railway system. Over time, there have been many different safety systems labelled as "automatic train control". The first experimental apparatus was installed on the Henley branch line in January 1906 by the Great Western Railway, although it would now be referred to as an automatic warning system (AWS) because the driver retained full command of braking. The term is especially com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regenerative Braking
Regenerative braking is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed. In this mechanism, the electric traction motor uses the vehicle's momentum to recover energy that would otherwise be lost to the brake discs as heat. This method contrasts with conventional braking systems. In those systems, the excess kinetic energy is converted to unwanted and wasted heat due to friction in the brakes, or with rheostatic brakes, where the energy is recovered by using electric motors as generators but is immediately dissipated as heat in resistors. In addition to improving the overall efficiency of the vehicle, regeneration can significantly extend the life of the braking system as the mechanical parts will not wear out quickly. General principle The most common form of regenerative brake involves an electric motor functioning as an electric generator. In elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronically Controlled Pneumatic Brakes
Electronically controlled pneumatic brakes are a type of modern railway braking system which offer improved performance compared to traditional railway air brakes. Overview Traditional train braking systems use pneumatic valves to control and generate brake applications on the cars along the length of the train. In general, this conventional system consists of a brake pipe that runs the length of the train which supplies air to reservoirs mounted on each of the cars. When the brake pipe and car components are charged with air, the brakes release. When the engineer needs to make a brake application, control valves in the locomotive reduce the brake pipe pressure. As the brake pipe pressure reduces, the service portion on each car diverts air from their reservoirs to their brake cylinders. To release the brakes, the engineer charges the brake pipe. This method of controlling the brakes on freight and passenger cars has remained virtually unchanged since its invention by George Wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable-frequency Drive
A variable-frequency drive (VFD) is a type of motor drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and, depending on topology, to control associated voltage or current variation., quote is per definition on p. 4 of NEMA Standards Publication ICS 7.2-2021. VFDs may also be known as 'AFDs' (adjustable-frequency drives), 'ASDs' (adjustable-speed drives), 'VSDs' (variable-speed drives), 'AC drives', 'micro drives', 'inverter drives' or, simply, 'drives'. VFDs are used in applications ranging from small appliances to large compressors. An increasing number of end users are showing greater interest in electric drive systems due to more stringent emission standards and demand for increased reliability and better availability. Systems using VFDs can be more efficient than those using throttling control of fluid flow, such as in systems with pumps and damper control for fans. However, the global market penetration fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chopper (electronics)
In electronics, a chopper circuit is any of numerous types of electronic switching devices and circuits used in power control and signal applications. A chopper is a device that converts fixed DC input to a variable DC output voltage directly. Essentially, a chopper is an electronic switch that is used to interrupt one signal under the control of another. In power electronics applications, since the switching element is either fully on or fully off, its losses are low and the circuit can provide high efficiency. However, the current supplied to the load is discontinuous and may require smoothing or a high switching frequency to avoid undesirable effects. In signal processing circuits, use of a chopper stabilizes a system against drift of electronic components; the original signal can be recovered after amplification or other processing by a synchronous demodulator that essentially un-does the "chopping" process. Comparison (step down chopper and step up chopper) Comparison bet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
