SŽD series Д б
| SŽD series Д б | |
|---|---|
| Numbering: | Db 20-71-100 |
| Number: | 30th |
| Manufacturer: | Baldwin |
| Year of construction (s): | 1944, 1945 |
| Retirement: | 1960s |
| Axis formula : | Co'Co ' |
| Gauge : | 1520 mm |
| Length over buffers: | 17,679 mm |
| Height: | 4,533.7 mm |
| Width: | 2,997 mm |
| Trunnion Distance: | 9,830 mm |
| Bogie axle base: | 3,962 mm |
| Total wheelbase: | 14,021 mm |
| Smallest bef. Radius: | 125 m |
| Empty mass: | 117.3 t |
| Service mass: | 122.6 t |
| Friction mass: | 122.6 t |
| Wheel set mass : | 20.5 t |
| Top speed: | 100 km / h |
| Installed capacity: | 1,000 hp |
| Driving wheel diameter: | 1,067 mm |
| Motor type: | 8-VO |
| Tank capacity: | 2.57 t |
| Drive: | diesel-electric |
| Coupling type: | Screw coupling |
The locomotives of the SŽD series Д б were diesel locomotives with the Co'Co 'wheel arrangement. They were built by the Baldwin Locomotive Works in the United States from 1944 to 1945 and shipped to the Soviet Union .
history
This series is a series that was supplied to the railways of the Soviet Union during the Second World War .
Compared to the series Д а it had many differences. All 30 diesel locomotives delivered to the Soviet Union were given the numbers 71-100 (USATC: 2460-2489) and were used in the Gudermes and Sukhumi depots .
The main shortcoming of these locomotives was the unreliable diesel engine, which became noticeable with cracks in the cylinder heads . That is why five diesel locomotives were decommissioned between 1953 and 1960. The remaining machines were removed from the inventory lists in the 1960s.
The diesel locomotive Д б -20-76 was last used in a railway institute in Moscow in the winter of 1981/1982 .
Only a few individual parts have been preserved: a driver's cab, converted into a container and a frame with a bogie as a carrier for a tank truck, have been preserved to this day.
construction
In contrast to the SŽD series Д а , this series only had a driver's cab at one end of the locomotive. For the train driver, this improved visibility of the route, but required an additional turning option at the respective end stations.
The main frame was made of cast pieces, which made it easier to accommodate equipment such as a diesel engine or pulling and pushing device. The bogies were made entirely of steel and equipped with monobloc wheelsets of 1067 mm (25 inches) in diameter.
