Mecklenburg IV
| Mecklenburg IV | |
|---|---|
 |
|
| Numbering: | 31-41 |
| Number: | 11 |
| Manufacturer: | Hartmann , Chemnitz |
| Year of construction (s): | 1871-1879 |
| Retirement: | 1905-1912 |
| Type : | 1B n2 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 13,747 mm |
| Height: | 4125 mm |
| Total wheelbase: | 4330 mm |
| Empty mass: | 28.65 t |
| Service mass: | 32.80 t |
| Friction mass: | 21.70 t |
| Wheel set mass : | 10.85 t |
| Top speed: | 80 km / h |
| Coupling wheel diameter: | 1720 mm; 1870 mm |
| Impeller diameter: | 1065 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 407 mm |
| Piston stroke: | 560 mm |
| Boiler overpressure: | 8.77 bar; 9.00 bar |
| Number of heating pipes: | 190 |
| Heating pipe length: | 3415 mm |
| Grate area: | 1.50 m² |
| Radiant heating surface: | 6.95 m² |
| Tubular heating surface: | 80.46 m² |
| Evaporation heating surface: | 87.41 m² |
In the class IV the associated Grand Duchy of Mecklenburg Friedrich-Franz Railway passenger locomotives the wheel arrangement 1B of the Friedrich-Franz Railway one.
history
After the class III locomotives proved their worth, the Friedrich-Franz-Eisenbahn ordered ten copies of an improved version of these machines between 1871 and 1873. Compared to their predecessors, they received a 150 mm smaller drive wheel diameter. Another single locomotive followed in 1879, the WAREN , which again received 1870 mm coupling wheels. The locomotives were given names from Mecklenburg towns, with the exception of one, which was named SIX HUNDRED because of the factory number. The locomotives were used on the main route from Güstrow to Neubrandenburg . The machines were retired from 1905 to 1912.
Constructive features
The construction of the locomotives of the individual delivery series differed in some details.
The locomotives had an internal sheet metal frame. The long boiler consisted of three shots. The locomotives of the first series from 1871 had the steam dome on the middle boiler section. From the delivery series of 1872, he moved the steam dome to the rear boiler section. As with the previous genre, the steam dome was the same height as the cylindrical chimney. It was also decorated with brass rings . The smoke chamber was expanded and the standing boiler was equipped with a Ramsbottom safety valve. An inclined and widened grate made it possible to expand the grate surface to 1.5 m².
The horizontally arranged two-cylinder wet steam engine was on the outside. the valve boxes and the Allan controls were inside. The drive rod acted on the first coupled axle.
The suspension was provided by leaf springs , which were arranged deep under the axle bearings. A long compensation lever between the axles connected the two spring assemblies. The barrel axle was cushioned by a leaf spring package on the frame.
The locomotives had a pneumatic brake type grinder. The sandpit was in front of the first coupling axis and sanded it.
The locomotives were usually coupled with a type 3 T 7.5 tender.
literature
- Hans-Joachim Kirsche, Hermann Lohr, Georg Thielmann: Lokomotiv-Archiv Mecklenburg / Oldenburg . transpress, Berlin 1989, ISBN 3-344-00326-7 .