O&K MV 6a / MV 6b

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O&K MV 6a / MV 6b
Museum locomotive of the Wupperschiene Association, Radevormwald-Dahlhausen
Museum locomotive of the Wupperschiene Association,
Radevormwald-Dahlhausen
Numbering: DHE No. 8
Westfalenhütte No. 51–56
and others
Number: MV 6a: 21
MV 6b: 77
Manufacturer: OK
Year of construction (s): 1953-1968
Type : B ie
Gauge : 1435 mm ( standard gauge )
Length over buffers: 6,500 mm
Length: 5,200 mm
Height: 3,120 mm
Width: 2,800 mm
Total wheelbase: 2,500 mm
Service mass: 24,000 kg
Friction mass: 24,000 kg
Wheel set mass : 12,000 kg
Top speed: 25 km / h
Installed capacity: originally 106.7 kW (145 PS)
after conversion 125 kW (170 PS)
Motor type: Originally O&K MV 6b
after rebuilding DB OM 402
Motor type: Six-cylinder four-stroke diesel
Locomotive brake: Indirect brake type Knorr

The O&K MV 6a / MV 6b series are two-axle diesel locomotives with hydraulic power transmission , almost 100 of which were produced by the manufacturer Orenstein & Koppel for light shunting between 1953 and 1968. Some locomotives are still available as of 2020.

history

After Orenstein & Koppel had created a first post-war type range in 1950, a revised range of the second post-war generation followed soon after. The designation of the locomotives contained the type of power generation, the power transmission, about 1/20 of the engine power and an identification letter. In the described series MV 6a / 6b mean M = Motor locomotive V = type of power transmission chain transmit 6 the power class of the diesel engine, about 120 horsepower, and a and b the engine variants.

The locomotives were designed for shunting tasks in which small locomotives with an output of around 55 hp were no longer sufficient. Of the locomotives with both engine variants, 98 copies were produced, which were mainly delivered to private companies. The formed

Several locomotives were delivered to Italy and the Netherlands .

Constructive features

The two-axle shunting locomotives have a front end for the machinery and an end driver's cab. After several conversions, there is no longer any external distinction to be seen between the MV 6a and the MV 6b . There are differences between straight and sloping front ends, rounded and sharp front end corners and headlights placed on the buffer beam or integrated into the front end. The locomotives of the Westfalenhütte were often coupled driver's cab to driver's cab during operation and therefore had a transition door with bellows in the front wall of the driver's cab.

The locomotives were factory-fitted with a six-cylinder four-stroke diesel engine from Orenstein & Koppel and a fluid transmission from Voith . The reversing gear screwed onto the fluid transmission was followed by the power drive of the locomotives via a chain wheel and roller chain on the two drive axles. Some locomotives were equipped with an indirect brake , the air reservoir was located behind the shunting step, which extends from the buffer beam to behind the front drive axle.

commitment

Delmenhorst-Harpstedter Railway

The only locomotive in the series that was also in use on a private railway was delivered to the Mariaglück mining company near Celle in 1956 . It stayed there until 1970, after which it was used by Kali und Salz AG in the same location. In 1976 she moved to the Guano Works in Nordenham , in 1988 to the Delmenhorst-Harpstedter Eisenbahnfreunde , where she received the number 1 . A year later, the machine moved to the Delmenhorst-Harpstedter Eisenbahn , which it designated with the number 8 . The locomotive shunted here for the company Moderne Bauelemente between Heiligenrode and Groß Mackenstedt .

In 1990 it suffered engine damage when a used six-cylinder four-stroke diesel engine from Daimler-Benz OM 402 with an output of 170 hp was installed as a replacement . After a few years it was sold to the reserve locomotive and in 2004 to Schweerbau GmbH in Stadthagen . The locomotive was still there in 2009.

Other preserved locomotives

The following companies, clubs or museums own type series locomotives:

Some vehicles are still in daily use in 2020, some were erected as memorials.

literature

  • Heusinkveld, Meyer, Wagner: The Delmenhorst-Harpstedter Railway . Kenning Verlag, Nordhorn 2001, ISBN 3-927587-93-1 , p. 272-274 .

Web links

Commons : Orenstein & Koppel MV 6  - Collection of images, videos and audio files

Individual evidence

  1. ↑ Data sheet about the first post-war program from O&K on www.rangierdiesel.de
  2. ↑ Data sheet about the second post-war program from O&K on www.rangierdiesel.de
  3. ↑ Data sheet about the locomotives O&K MV 6a / MV 6b at www.rangierdiesel.de
  4. ↑ Photo of a pair of locomotives O&K MV 6b from the Westfalenhütte on www.rangierdiesel.de
  5. ↑ Rear view of an O&K MV 6b from the Westfalenhütte on www.rangierdiesel.de
  6. ^ Photo of the Schweerbau locomotive at www.rangierdiesel.de
  7. ↑ a b Heusinkveld, Meyer, Wagner: The Delmenhorst-Harpstedter Railway . Kenning Verlag, Nordhorn 2001, ISBN 3-927587-93-1 , p. 272-274 .
  8. ↑ Data sheet for the locomotive at www.rangierdiesel.de
  9. ↑ Data sheet for the locomotive in the Westphalian Industrial Museum at www.rangierdiesel.de
  10. ↑ Data sheet for the locomotive at the Franconian Museum Railway at www.rangierdiesel.de
  11. ↑ Data sheet of the locomotive from the Berliner Eisenbahnfreunde at www.rangierdiesel.de
  12. ↑ Data sheet of the locomotive at the Oldtimermuseum Rügen on www.rangierdiesel.de
  13. ↑ Data sheet for the locomotive from the Wupperschiene development association at www.rangierdiesel.de
  14. ↑ Data sheet for the locomotive at the Rheinisches Industriebahn-Museum at www.rangierdiesel.de
  15. ↑ Data sheet for the locomotive from the Werra-Fulda-Bahn development association at www.rangierdiesel.de
  16. ↑ Data sheet of the locomotive from the Eisenbahnfreunde Mittelholstein on www.rangierdiesel.de
  17. ↑ Data sheet for the locomotive at the Selb-Rehau Model and Railway Club at www.rangierdiesel.de