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avatar Skygroz
Level 17 : Journeyman Dragon
In 1993, the Mytishchi machine-building plant switched to the production of metro cars of types 81-717.5 and 81-714.5, which underwent another modernization. To distinguish modernized wagons from wagons of earlier production, new designations of wagon modifications were introduced. Head metro cars manufactured since 1993 received factory designations 81-717.5М, intermediate cars - 81-714.5М. In 2002, Metrovagonmash OJSC delivered “number” meter carriages of special configuration in Baku, which received the designations 81-717.5Б and 81-714.5Б respectively.

Metro cars of models 81-717.5М and 81-714.5М are motorized, all axes of cars are leading. The cars are designed to work on the system of many units and can be operated as part of a train with up to eight cars. Head cars 81-717.5М at shuttle operation of rolling stock are installed at the ends of the train. The car bodies are made of low-carbon steel and have an all-welded bearing structure. The outer skin of the body to ensure increased rigidity is made of corrugated steel sheets, the body has increased heat and sound insulation. The cars of types 81-717.5М.714.5М are equipped with two ventilation systems - natural supply and exhaust and forced mechanical.

The cars are equipped with a direct current traction motor with a smooth field control system (engine excitation), designed for operation in traction mode and in the mode of electrodynamic resistor braking from a speed of 90 km / h to 8 km / h. Four traction electric motors DK-117DM with self-ventilation are installed in each car, two for a trolley, with a power of 114 kW each.

Trolleys of wagons 81-717.5М and 81-714.5М are biaxial, with supporting-frame suspension of traction motors and axial suspension of gearboxes. Trolley frame N-shaped all-welded, with a two-stage spring suspension. In the primary suspension used sets of coil springs. The secondary suspension of the cradle type is also using spiral coil springs. Hydraulic dampers for damping vertical and horizontal oscillations are built into the secondary suspension system.

Externally, the compositions of electric cars types 81-717.5М / 714.5М differ from their predecessors by the presence of four headlights under the windshield of the head car, but since 2001, older cars of types 81-717 and 81-717.5 with the modernization began to receive a similar look. Since 2003, anti-vandal plastic seats with soft inserts have been installed in the passenger compartments of cars of types 81-717.5М / 714.5М.
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FIX light : 11/13/2018 11:53:02 amNov 13th

Comments : 5

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1 - 5 of 5

  • busterdogtnt
  • Level 8
  • Apprentice Engineer
  • November 14, 2018, 10:14 am
  • Wooouh
  • Level 34
  • Artisan Vampire
  • November 14, 2018, 8:36 am
Очень хорошо, мне нравится ))
Поздрави из Болгарии!
  • MrHack_
  • Level 29
  • Expert Architect
  • November 14, 2018, 5:56 am
Ооо привет))
  • Dushess
  • Level 32
  • Artisan Dragon
  • November 13, 2018, 7:03 am
Настало время строить метро из 2033 года.
  • Skygroz
  • Level 17
  • Journeyman Dragon
  • November 13, 2018, 8:20 am
Киевские вагоны типа ЕМ у меня есть, но с ними я потом разберусь

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