F60
F60 is the series name of five conveyor bridges in the Lausitz open- cast lignite mine . They were built by the former VEB TAKRAF Lauchhammer and are the largest moving technical machines in the world. As an overburden conveyor bridge, they transport the overburden that is stored above the coal seam . The original maximum thickness is 60 meters, hence the designation F60. With a length of 502 meters, it is also known as the lying Eiffel Tower . In total, it is up to 80 meters high and 240 meters wide. When operational, the overburden conveyor bridge (without excavator) weighs 13,500 tons.
In the Lusatian lignite district , four F60s are still in operation today: in the open- cast lignite mines Welzow-Süd , Nochten , Jänschwalde and Reichwalde . The fifth and last conveyor bridge built is accessible to visitors and is located in the visitor mine overburden conveyor bridge F60 near Lichterfeld-Schacksdorf . After the assembly groups have been removed, it still weighs 11,000 tons.
technology
The F60 has two chassis complexes that run on three tracks on the excavator side and two tracks on the dump side in standard gauge . In addition to the two tracks on the excavator side, there are two tracks for the transformer and cable car as well as for the connected bucket chain excavator . The bridge runs on 760 chassis wheels, 380 of which are driven. The maximum speed of the F60 is 13 m / min, the working speed 9 m / min.
The conveyor bridge is supplied by two upstream excavators of the type Es 3150 or Es 3750 as "auxiliary workers". There is an excavator on each of the two cross conveyors. Both together have a delivery rate of around 17,000 m³ / h (Es 3150) or 23,000 m³ / h (Es 3750). Nine different overburden conveyor belts run on the bridge at a speed of up to 9 m / s.
The electrical connected load of the F60 including the two excavators is 27,000 kW. 1.2 kWh of electrical energy are used to move one cubic meter of overburden from the excavator side to a fall at a height of 75 m.
Two of the four F60s currently in operation also operate another excavator, which is linked to the main bridge by a feeder bridge (F60 in Nochten) or an excavator cross conveyor (F60 in Jänschwalde). This combination increases the maximum delivery head and increases the maximum delivery rate to up to 25,600 m³ / h (3 excavators type Es 3150) or 34,600 m³ / h (3 excavators type Es 3750). The F60 in the Welzow-Süd opencast mine was equipped with a feeder bridge in 1977 to increase performance, as is used on the F60 in the Nochten opencast mine. This feeder was dismantled again in October 2011 due to the changed overburden conditions in the south subfield and is intended for scrapping.
Built overburden conveyor bridges of type F60
- No. 32, Welzow-Süd opencast mine : built from 1969 to 1972, in operation since 1972 (from 1977 to 2011 with feeder bridge)
- No. 33, Nochten opencast mine : built from 1972 to 1974, in operation since 1974 (with a feeder bridge from the beginning)
- No. 34, Jänschwalde opencast mine : built from 1976 to 1978, in operation since 1978 (with feeder bridge since 1985)
- No. 35, Reichwalde opencast mine : built from 1986 to 1988, from 1988 to 1999 and in operation again since 2010
- No. 36, Klettwitz-Nord opencast mine : built from 1988 to 1991, in operation from 1991 to 1992, visitor mine since 2002
Footnotes
- ↑ a b The bridge in detail. In: f60.de. Retrieved May 24, 2016 .
