VR series Vr12
| Vr12 / Dr14 | |
|---|---|
 Dr14 1868 in Pasila
|
|
| Numbering: | 1851-1874 |
| Number: | 24 |
| Manufacturer: | Rauma-Repola , Lokomo |
| Year of construction (s): | 1968-1971 |
| Axis formula : | B'B ' |
| Gauge : | 1524 mm |
| Length over buffers: | 14th 000 mm |
| Height: | 4700 mm |
| Width: | 3200 mm |
| Trunnion Distance: | 9650 mm |
| Service mass: | 78 t / with additional weights 86 t |
| Wheel set mass : | 19.5 t with additional weights 21.5 t |
| Top speed: | 75/35 km / h |
| Installed capacity: | 875 kW |
| Driving wheel diameter: | 1050 mm |
| Motor type: | Tampella MAN R8V 22/30 ATL |
| Power transmission: | hydraulic |
| Coupling type: | Center buffer coupling type SA3, additional side buffers and automatic shunting couplings |
| Particularities: | partial train control system: EBICAB -900 system JKV |
The Vr12 series are heavy four-axle diesel-hydraulic locomotives that were procured by the Finnish State Railways ( VR ) between 1968 and 1971 . 24 locomotives with the B'B 'wheel arrangement were built.
The locomotives are primarily used in the heavy shunting service and also for the transport of freight trains. They are VR's only heavy shunting locomotives. They replaced numerous steam locomotives of the O1 series , which became the Vr3 series when the numbering plan was changed in 1942 .
history
Two pre-production locomotives were delivered in 1969. The series locomotives were delivered from 1970 to 1971.
VR series Dr14
As part of the 1976 re-labeling plan, the locomotives were run as the Dr14 class from this point on. The locomotives are used in heavy shunting service in Helsinki , Kilpilahti , Tampere , Kotka , Imatra , Vainikkala and Kokkola , among others .
From the freight station in Kouvola , they travel by short-haul freight trains. They were also used in freight transport from Pasila to Hakkila , Sköldvik and Kauniainen .
technology
The locomotives have a diesel engine (MAN R8V 22/30 ATL) with a drive power of 875 kW, turbocharger and intermediate air cooling and a hydraulic transmission of the type L206 from Voith . Power is transmitted to the wheel sets via the power take-off shafts.
The locomotive frame rests on two two-axle bogies . The central cab has cabs for both directions.
The mass of the locomotive can be increased by using additional weights attached to the gangways. All locomotives are equipped with radio control units. Several locomotives are generally only approved for a maximum speed of 35 km / h because they are not equipped with the Automatic Train Control System ATP-VR / RHK (an EBICAB -900 system, in Finland JKV , in Finnish called junakulunvalvonta ).
Between 2002 and 2005, all locomotives were upgraded to the current standard as part of a modernization by Maschinenbau Hyvinkää , whereby the engines and hydraulic power transmission were retained. In addition to the complete repainting, the windows of the driver's cab were lowered on the front and back to give the driver a better view of the buffer beam. The locomotives were also equipped with a silencer.
The locomotives received radio control devices from the end of 2008. In connection with this conversion, the railings and stairs of the shunting bridges were adapted.
Future prospects
As a result of the modernization measures, a life cycle of the locomotives is planned up to the period 2019 to 2025.
literature
- Eonsuu, Honkanen, Pölhö: Suomen veturit osa 2. Moottorikalusto , 1995, Elokuvan Maailma ay, ISBN 952-5060-02-0 .
- Eljas Pölhö, Mia Pykälä-Aho: Suomen juna- ja raitiovaunukuvasto, Finnish Motive Power , 1996, ISBN 91-7266-133-X .
Web links
- Dr14 "Zebra" Medium General Purpose Freight Locomotive. 4rail.net, accessed on September 16, 2017 (English).
- VR: n Moottorivaunut. Suomen Rautatiehistoriallinen Seura ry (SRHS), accessed September 16, 2017 (Finnish).
- John McKey: Finnish and Estonian Railways - Rolling Stock Recognition Guide 2014–2015. Retrieved September 16, 2017 (English, limited preview in Google Book Search).