Württemberg buon
| Württemberg Tn DR class 94.1 |
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| Numbering: | 1001-1030 DR 94 101-130 |
| Number: | 30th |
| Manufacturer: | Esslingen |
| Year of construction (s): | 1921-1922 |
| Retirement: | 1959-1961 |
| Type : | E h2t |
| Genre : | Gt 55.13 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 11,030 mm |
| Service mass: | 64.5 t |
| Friction mass: | 64.5 t |
| Wheel set mass : | 12.9 t |
| Top speed: | 50 km / h |
| Indexed performance : | 566 kW |
| Driving wheel diameter: | 1,150 mm |
| Control type : | Heusinger with a Kuhn loop |
| Cylinder diameter: | 500 mm |
| Piston stroke: | 560 mm |
| Boiler overpressure: | 13 bar |
| Number of heating pipes: | 29 |
| Number of smoke tubes: | 118 |
| Heating pipe length: | 3,500 mm |
| Grate area: | 1.93 m² |
| Radiant heating surface: | 10.38 m² |
| Tubular heating surface: | 95.75 m² |
| Superheater area : | 57.20 m² |
| Evaporation heating surface: | 106.13 m² |
| Water supply: | 8 m³ |
| Fuel supply: | 3 tons of coal |
| Brake: | Westinghouse air brake |
The tank locomotives of the Tn series of the Royal Württemberg State Railways were freight locomotives without running axles with five coupled axles . In 1925 the Deutsche Reichsbahn classified them as class 94.1 in their numbering plan .
history
By the end of the Länderbahn era, the Württemberg State Railroad, unlike the other German State Railways, did not have a five-coupled tank locomotive. Only after the end of the First World War was such a machine commissioned in 1919 specifically for use on branch lines and branch lines with a light superstructure that only allowed an axle load of a maximum of 13 tons.
This requirement regarding the axle load determined the design from the start. The result was the lightest and smallest five-fold coupled tank locomotive in Germany.
The machine works Esslingen delivered all thirty copies of the series between 1921 and 1922 to the Württemberg State Railway. After higher axle loads were possible on branch lines in Württemberg through improved superstructures, the locomotives were used in shunting and pushing services . Two copies were in use after the Second World War as 523.1500 and 523.1501 at the ČSD in Czechoslovakia , but were returned to Germany in 1948.
In the end, all of the machines came to the Deutsche Bundesbahn , which they decommissioned between 1959 and 1961. None of the locomotives have survived. The Schiltach – Schramberg railway was the main line of the 94.1 until it was replaced by V60 and V100 diesel locomotives between 1959 and 1961. The last example, the 94 113, ran on the Ludwigsburg – Markgröningen railway until 1961 and was then scrapped in Tübingen.
Constructive features
The machines were built on a sheet metal frame made of 20 mm thick sheet metal. The boilers, which were also riveted, had two long boiler sections with a diameter of 1,420 and 1,450 mm; The steam dome with flanged-on safety valves of the Pop type was arranged on the second boiler section. The fire boxes were made of copper; A small tube superheater, type Schmidt, was used as the superheater, with which steam temperatures of over 400 ° C could be achieved. The first, third and fifth coupling axles of the locomotives were arranged to be laterally displaceable by ± 22 mm , while the second and fourth axles were fixed in the sheet metal frame. Even curve radii of 100 m were negotiated without constraints. The slightly inclined two-cylinder superheated steam engine on the outside drove the fourth coupled gear set via unusually long drive and piston rods (length of the piston rod almost 2 m). Due to the small wheel diameter of only 1,150 mm, the top speed was limited to 50 km / h.
The Tn were able to move a 1,050 t train on the plain at a top speed of 50 km / h. On gradients of 10 per mille, the locomotive pulled 420 t at 30 km / h.
literature
- Manfred Weisbrod, Hans Müller, Wolfgang Petznick: German Locomotive Archive: Steam Locomotives 3 (series 61–98) . 4th edition, transpress, Berlin 1994, ISBN 3-344-70841-4 , p. 210f., P. 349
Individual evidence
- ↑ Text passage from “Paysagesblog”, “Memories of the“ märklinModerne ””, including a picture of the 94 129 on the said route. Accessed on December 29, 2019.