Brohltalbahn I
| Brohltalbahn I | |
|---|---|
 Locomotive I of the Brohltalbahn
|
|
| Numbering: | Brohltalbahn I |
| Number: | 1 |
| Manufacturer: | Krauss |
| Year of construction (s): | 1930 |
| Retirement: | 1965 |
| Type : | E h2t |
| Gauge : | 1000 mm ( meter gauge ) |
| Length over buffers: | 10,960 mm |
| Total wheelbase: | 5,000 mm |
| Smallest bef. Radius: | 60 m |
| Service mass with tender: | 55,000 kg |
| Friction mass: | 55,000 kg |
| Wheel set mass : | 5,500 kg |
| Top speed: | 35 km / h |
| Wheel diameter: | 1,000 mm |
| HD cylinder diameter: | 500 mm |
| Piston stroke: | 550 mm |
| Boiler overpressure: | 14 bar |
| Heating pipe length: | 4,000 mm |
| Grate area: | 2.35 m² |
| Superheater area : | 45.8 m² |
| Evaporation heating surface: | 156.4 m² |
| Water supply: | 5.5 m³ |
| Fuel supply: | 2,000 kg |
| Brake: |
Suction air brake, back pressure brake, hand brake |
The Brohltalbahn I locomotive was a five - axle meter - gauge tank locomotive that was built by the Krauss machine shop in Munich for the Brohltalbahn . With their commissioning, the freight traffic could be switched to pure friction operation.
history
In order to end the uneconomical rack and pinion drive on the 50 ‰ section from Oberzissen to Engeln , the Brohlthal Railway Company acquired a five-axle locomotive for pure friction operation from Krauss in Munich. The locomotive had to be able to run on relatively tight curve radii up to a radius of 60 m. Since the pure friction operation appeared unsafe on the existing incline, the locomotive was given a gear brake. The rack on the route was initially retained.
The locomotive met all expectations and performed well. After another Mallet locomotive was added in 1934, the Brohl Valley Railway was able to run the entire route in friction mode and dispense with the rest of the rack -and- pinion locomotives . Therefore, the rack could be expanded in the same year. The locomotive was very curvy and proved to be economical. This led to further purchases of friction locomotives until the 1950s.
To relieve the stoker, the locomotive was converted to main oil firing in 1959 . The locomotive was in service until the first diesel locomotives were purchased and was taken out of service in September 1966.
Constructive features
The locomotive was equipped with a superheated steam boiler. The steam was superheated to temperatures of up to 300 ° C with a superheater.
The running gear was very complex for the existing curve radius of 60 m. The two front axes were combined in a Beugniot frame . The third axle did not have a flange , the fourth axle could be moved laterally with a deflection of +/- 30 mm, and only the last axle was firmly mounted in the frame.
In addition to the suction air brake, counter pressure brake and handbrake, the locomotive also had a gear brake that could intervene in the rack that was initially still present.
literature
- Gerd Wolff: 90 years of the Brohl Valley Railway . EK-Verlag, Freiburg 1991, ISBN 3-88255-530-0 .