Wehrmacht locomotive D 311

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Wehrmacht D 311
DB class V 188
DB class 288
V 188 001a in AW Nürnberg
V 188 001a in AW Nürnberg
Numbering: D 311 01a / b – D 311 04a / b
DB: V 188 001–002
from 1968 288 001–002
Number: 4
(2 taken over by DB)
Manufacturer: Krupp / SSW
Year of construction (s): 1941
Retirement: 1969/1972
Axis formula : Thursday + Thursday
Length over buffers: 22,510 mm
Service mass: 147.0 t
Wheel set mass : 18.0 t
Top speed: 75 km / h
Installed capacity: 2 × 691 kW = 1,382 kW
2 × 808 kW = 1,616 kW (after conversion)
Driving wheel diameter: 1,250 mm
Motor type: 2 × 6 cylinders
Power transmission: electric
Number of traction motors: 8th
Drive: Paw camp

The Wehrmacht locomotive D 311 was a diesel locomotive of the German Wehrmacht for use with the heavy guns of the Gustav and Dora types . In 1939, the consortium F. Krupp / Siemens-Schuckert (SSW) procured a total of eight vehicle halves from this series for the Wehrmacht.

Although they were the property of the Wehrmacht, this was not directly noted on the locomotives, rather the marking on them was Deutsche Reichsbahn , one line below Essen , followed by Fried. Krupp AG In the fourth line there was the locomotive number plate, underneath it the indication Heimatbahnhof Essen .

After the Second World War, the remaining units were operated by the Deutsche Bundesbahn as the V 188 series , and from 1968 as the 288 series .

construction

The Wehrmacht locomotives D 311 were designed as diesel - electric double locomotives with half-units a and b.

The power transmission from the engine took place via an interposed generator with cable connections to the electric traction motors on each of the four wheel sets per half-unit. The axis sequence designation was accordingly "Do + Do". The machines originally had 940  hp (equivalent to 691  kilowatts ) engine output per half of the vehicle and were approved for speeds of up to 75  kilometers per hour . The controls of both locomotives were electrically coupled and were operated from the driver's cab in front . The total mass of the two halves of the vehicle together was 147 tons.

The two units were connected with a close coupling. The two central axles were laterally displaceable.

The locomotives were with a specific peaks - and tail lamp equipped -Signalanlage that allowed in any country of use the usual there light signals to switch (e.g., two or three front lights.). During the shifting of the 80 cm guns rolling on the two parallel tracks of the firing curve, it was possible to switch to only one red marker light on each of the rear locomotives, which means that a rail vehicle was displayed on only one track with two red marker lights.

use

The "D 311" were intended to bring the railway guns assigned to them into the positions specially created for them and to position them on the so-called firing curve for aiming the gun and to supply them with electrical energy. The actual use for this was very limited, as only the so-called Dora gun, one of two 80 cm guns , was used for a single combat mission .

After the end of the Second World War , the D 311 03 and 04 were taken over as the V 188 series and from 1968 as the 288 series and the D 311 02 as spare parts donors in the inventory of the Deutsche Bundesbahn . In the vehicles now being prepared by Krauss-Maffei for freight traffic , the two 940 hp engines were replaced by 1,100 hp engines (corresponding to 808 kilowatts each), which had been developed by Maybach for the V 200.0 series .

The lighting systems designed for military use were dismantled to the standard light signals on both machines. The paintwork was adapted to the wine-red color scheme of the new locomotives, and multiple adjustments were made during the remaining operating time, for example to the compressed air brake and the heating device. The two copies of the series 288 were until their retirement in 1971 from the railway depots Gemünden and Bamberg used. In 1973 both locomotives were scrapped at the Layritz company in Penzberg.

literature

  • Stefan Lauscher: The diesel locomotives of the Wehrmacht: the history of the V 20, V 36 and V 188 series . EK Verlag, Freiburg 1999, ISBN 3-88255-236-0 .

Web links