SBB De 6/6
| SBB De 6/6 | |
|---|---|
 Seetal crocodile in Hochdorf in September 2016
|
|
| Numbering: | 15301-15303 |
| Number: | 3 (1 received) |
| Manufacturer: | SLM BBC |
| Year of construction (s): | 1926 |
| Retirement: | 1983 |
| Axis formula : | C'C ' |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 14,000 mm (14,060) |
| Trunnion Distance: | 4150 mm |
| Bogie axle base: | 4,050 mm |
| Total wheelbase: | 10,800 mm |
| Service mass: | 73 t |
| Top speed: | 50 km / h |
| Hourly output : | 850 kW |
| Power system : | 15,000 V 16 2/3 Hz (up to 1930 also 5500 V 25 Hz) |
| Number of traction motors: | 2 |
The De 6/6 of the Swiss Federal Railways ( SBB ) is an electric freight locomotive that was purchased for the Seetallinie . The three locomotives, known as the Seetal Crocodile, were initially built for two power systems (5500 V 25 Hz and 15,000 V 16 2/3 Hz). The locomotives were delivered in 1926 and scrapped by the SBB in 1983.
history
The Seetalbahn , which was initially powered by steam, was electrified as early as 1909, but with the exotic alternating voltage of 5500 volts and 25 Hz. When the line was nationalized on January 1, 1922 and came to the SBB, there was a need for three freight locomotives. The SBB immediately decided to order three locomotives from the industry. These largely corresponded to the Ee 3/3 ( low shoe ) that had just been ordered .
Technical
The vehicle consists of two front structures in which the drive is housed; these are connected to each other by a bridge. The stems largely correspond to an Ee 3/3 (16311–16326). Most of the chassis parts and the drive motors can be exchanged with the Ee 3/3. However, the transformer has been moved to the bridge. The structure is a real crocodile . A first-generation upright oil transformer was installed and had a separate oil cooler. There were flat web tap changer installed. A traction motor was housed in each front structure, which drove the three axles, which were located in a common inner frame, via a diagonal rod (Winterthur diagonal rod drive) and coupling rod . The middle axis was mounted in the frame so that it could be moved 6 mm on both sides.
The initial length with rod buffers was 14,000 mm, with the addition of modern buffers it was extended by 60 mm to the total length to 14,060 mm.
All three locomotives could initially be switched between the two power systems 5500 volts and 25 Hz and 15,000 V 16 2/3 Hz. This facility was expanded four years after the Seetalbahn was converted to the SBB system.
Until 1954, the De 6/6 had a green paint, then an oxide red paint, as was used on the shunting locomotives and on the converted SBB De 4/4 .
Operational use
The locomotives were always in use on the Seetalbahn, although they were also occasionally used on the adjoining routes. With a top speed of 50 km / h, however, it was not really useful on the main routes. The locomotives were always assigned to the Lucerne depot. The main maintenance was carried out by HW Bellinzona until 1972, then HW Biel.
The only long lasting guest performance took place between 1926 and 1931. Because between 1926 and 1929 the 15303 was used as a shunting locomotive in Bellinzona S. Paolo. And between 1929 and 1931 the 15302 was stationed in Chiasso.
Whereabouts
The De 6/6 15302 was scrapped in January 1983 and the 15303 in March 1983, the 15301 was sold to the OeBB in April 1983 .
At the OeBB, the locomotive suffered a short circuit in the heating circuit in 1990, causing irreparable damage to the transformer. Since the other two locomotives had already been scrapped, this damage, which is usually irreversible, was no reason to think about a repair solution. Thanks to the Biel Engineering School, a renovation plan could be drawn up. A diploma thesis by an HTL student showed that it was possible to restore the locomotive to working order with the help of recycling material from an SBB-BDe-4/4-railcar. To do this, the transformer and the main switch of a discarded railcar had to be taken over and the traction motors connected in series. As a feasibility study was available, an association was subsequently founded with the goal of maintaining and restarting the locomotive. On December 31, 1995, work began on dismantling the locomotive. Finally, the main switch of the SBB Re 4/4 I 10033 and the transformer of the BLS Ce 4/4 316, which, in contrast to the one of the BDe 4/4, is similar to the original, were installed. After years of work, the Seetal crocodile was able to be made operational again and was accepted by the Federal Office of Transport on April 10, 2008.
The machine has been in the Bahnpark Brugg AG for several years. By 2014, the latest train protection systems were installed and approved by the BAV. The Seetal Crocodile now has an operating license again and can be used on the Swiss rail network (with the exception of the ETCS-L2-secured routes). The first trip after approval took place on May 9, 2015 from Brugg to Koblenz and Stein Säckingen.
In August 2016 the machine returned to its old home and is now stationed in the Hochdorf Remise.
See also
literature
- Report on the revision of the Seetal crocodile and the use of the De 6/6 between 1936 and 1990 in: Eisenbahn Amateur 6/2008, pages 331–342
Web links
Individual evidence
- ↑ http://www.historische-seethalbahn.ch/2016/08/29/seetalkrokodil-zu-hause/ Seetalkrokodil at home at historic-seethalbahn.ch