Krupp mining
| Krupp type mining | |
|---|---|
 The penultimate mine (factory no. 4248) in the Henrichshütte industrial museum
|
|
| Numbering: | various |
| Number: | 30th |
| Manufacturer: | Krupp locomotive and wagon construction factory |
| Year of construction (s): | 1948-1962 |
| Type : | D h2t |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 11,100–11,250 mm (depending on the series) |
| Height: | 4,200 mm |
| Width: | 3,130 mm |
| Fixed wheelbase: | 3,000 mm |
| Total wheelbase: | 4,500 mm |
| Smallest bef. Radius: | 100 m |
| Empty mass: | 59–63 t (depending on the series and technical equipment) |
| Service mass: | 79-80 t |
| Friction mass: | 79-80 t |
| Wheel set mass : | 20 t |
| Top speed: | 50 km / h |
| Indexed performance : | 735 kW |
| Starting tractive effort: | 223 kN |
| Driving wheel diameter: | 1,200 mm |
| Control type : | Heusinger, outside |
| Number of cylinders: | 2 |
| Cylinder diameter: | 630 mm |
| Piston stroke: | 600 mm |
| Boiler overpressure: | 15 kgf / cm² |
| Grate area: | 2.46 m² |
| Superheater area : | 42 m² |
| Evaporation heating surface: | 129 m² |
| Water supply: | 8.0-10.0 m³ |
| Fuel supply: | 3.0 tons of coal |
| Brake: | Compressed air |
The type mining is a standard gauge, four-axle steam - tank locomotive ( wheel arrangement D) from the post-type program of the company Krupp in Essen .
History of origin
During the Second World War , Krupp received the order to develop a heavy Dh2t locomotive design for the Reichswerke Hermann Göring in Salzgitter . After completion of the construction work, the construction of the 13 machines ordered was relocated to the Werkspoor company in the Netherlands occupied by German troops due to the war ; However, no locomotive could be completed by the end of the war. Shortly before the occupation troops withdrew, the processed assemblies were transferred to Essen, where they became part of the first mining series after completion and final assembly from 1948 onwards.
design type
The mining was designed for the heavy handover and shunting service of industrial and works railways . In line with this purpose, it was designed to be particularly robust and powerful. Thanks to its comparatively high boiler pressure, the large cylinders and the favorable gear ratio, the 80 t heavy and 1000 PSi strong locomotive with full supplies was not only the most powerful type of the Krupp industrial locomotive program, but also the heaviest and most powerful four-axle German tank locomotive ever. In the lower speed range, its pulling power even exceeded that of the class 50 six-axle tender locomotive . The maximum permissible speed was 50 km / h. In order to achieve favorable cornering properties, only the first and third wheel set were firmly in the frame; the second and fourth wheel sets could each be laterally shifted by 15 mm.
The types were manufactured in several batches, some of which can be distinguished externally: The first two series had square cab front windows in the style of war locomotives , angular cab roofs and two visible boiler superstructures (steam dome with two sandboxes under a shared panel, separate dining dome); Locomotives built later had oval front windows, rounded cab roofs and continuous cladding of the dining dome, steam dome and just one sandpit. Since the water supply of 8 m³ at the locomotives used on the HOAG ( Walsum - Oberhausen ) port railway had proven to be a bit scarce, some of the machines built later were equipped with enlarged rear storage tanks. The rear overhang grew by 150 mm, the water supply increased to 10 m³. Some machines were equipped with a mixer preheater at the factory .
Delivery and operator
The 30 copies of the mining industry were delivered between 1948 and 1962 to various operators, mainly from the coal and steel industry. Gelsenkirchener Bergwerks-AG alone owned six locomotives of this type. More information on the first owners of all 30 machines can be found in the detailed delivery list.
The production was carried out in at least five lots, some of which differ technically (see above). As with other Krupp plant types, a number of copies were made for stock without a customer order and some stood in the plant for years before they were sold. However, the date of delivery and not the actual year of construction is almost always stated on the nameplates. It is therefore difficult to assign the three most recently delivered machines listed as “individual pieces” in the delivery list mentioned, especially since, according to Ebel, Krupp no longer built any new factory steam locomotives after 1957, but only sold copies in stock. The machines with the serial numbers 3757, 4248 and 4401 thus possibly represent a sixth series with the year of construction 1957, whereby the serial number and year of manufacture on the nameplate were "adjusted" on delivery.
Preserved copies
Three machines from different series have been preserved in a museum. None of the locomotives are operational.
| Serial no. | Delivery year | Location |
|---|---|---|
| 2902 | 1948 | Deutsches Werkbahn Museum eV, Aschersleben |
| 3077 | 1952 | Henrichshütte LWL Industrial Museum , Hattingen |
| 4248 | 1961 | Henrichshütte LWL Industrial Museum, Hattingen |
See also
literature
- Joachim Leitsch, Harald Sydow: Mining steam locomotives in North Rhine-Westphalia , ArGe Drehscheibe eV, Cologne 2011.
- Manfred Lohmann: The locomotives of the Gutehoffnungshütte and the Hüttenwerk Oberhausen AG , in: Lok-Magazin 51, Franck'sche Verlagshandlung, Stuttgart 1971.
- Karl Rainer Repetzki: Krupp in the service of the steam locomotive , Steiger Verlag, Moers 1981.
Individual evidence
- ↑ Delivery list on dampflokomotivarchiv.de. Retrieved August 22, 2018 .
- ↑ Jürgen-Ulrich Ebel: The series 10 . EK-Verlag, Freiburg 1998. p. 62.
