DB class 711.2
| DB class 711.2 Robel IFO 57.44 |
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| Numbering: | 711 201-212 |
| Number: | 12 |
| Manufacturer: | Robel track construction machines |
| Year of construction (s): | since 2009 |
| Axis formula : | B'B ' |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 24,500 mm |
| Service mass: | 76 t |
| Top speed: | 140 km / h |
| Installed capacity: | 2 × 480 kW |
| Motor type: | Deutz TCD 2015 V08 |
| Tank capacity: | 2 × 750 l |
| Drive: | diesel-hydraulic, hydrostatic |
| Coupling type: | Screw coupling |
The Deutsche Bahn AG designates a series of maintenance vehicles for overhead contact line systems as the 711.2 series that has been manufactured by Robel Bahnbaumaschinen since 2009 under the name IFO 57.44.
technology
The IFO 57.44 was developed by Robel on behalf of Deutsche Bahn. These are vehicles for repairs and maintenance on overhead contact line systems .
The car body is designed appropriately and clad with sheet steel. On the fronts, under the cladding of the vehicle heads, which are based on modern electric locomotives , there are stable welded structures to absorb the forces released in an accident.
It is driven by two TCD 2015 V08 diesel engines from Deutz , each with 480 kW, each of which acts on both axles of a bogie by means of a hydraulic transmission . If the route conditions permit or if there are disruptions, only one drive system can be used. A hydrostatic drive is installed on a bogie for the work journey, which is driven by one of the two main diesel engines. This allows driving at speeds below 10 km / h. The maximum speed is 140 km / h, which is necessary above all for the quick removal of faults. When traveling at 100 km / h, the vehicle can carry a trailer load of 150 t and is equipped with a screw coupling for this purpose .
The driver's cabs are each designed for two people and can be entered from the outside through doors on both sides. Another five people can be seated in a social room behind the driver's cab at the front end of the vehicle. In addition to a kitchenette, there is also a dining and meeting table. Behind the driver's cab opposite is a wet cell with a toilet and sink. The waste water produced is treated in a bioreactor similar to a sewage treatment plant before it is discharged into the track .
The work and workshop space located between the social room and the wet room is largely symmetrical and approx. 10.5 m long with a width of 2.5 m and a height of 2 m. This can also be entered from the outside through diagonally offset, 1510 mm wide sliding doors. In the area of these doors there is a lifting device for loading and unloading heavy objects up to 250 kg.
The roof area can be reached via a roof hatch in the middle of the vehicle and can be walked on over the full length of around 20 m. A current collector is located on the vehicle roof above the front driver's cab , behind which a set of hydraulic pushers for the contact wire and suspension cable is installed. There are two different access platforms on the hatch . The one in the direction of the front end of the vehicle is intended for work on the contact wire up to 9 m above the top edge of the rail . It can be swiveled horizontally in all directions and has a load capacity of 500 kg. Another working platform is located in the direction of the rear end of the vehicle, this can be swiveled up to 21 m above or 9 m below the upper edge of the rail and has a load capacity of 280 kg. The lifting arm of this platform is attached to another arm that can be swiveled next to the vehicle, both arms are freely rotatable. It is primarily intended for work on masts, but can also be used to load larger loads through the loading doors of the vehicle. Another auxiliary motor is available as a fallback level for the emergency lowering of the hydraulic system in the event of a possible failure of the drive motors.
The entire area around the vehicle can be viewed from the driver's cab via cameras; one of these cameras is aimed at the pantograph. The images can be recorded for later evaluation.
commitment
A first vehicle was presented in April 2009 at the "International Exhibition of Track Technology" in Münster. Deutsche Bahn originally ordered eight vehicles of this type, which were delivered by summer 2011. They are used throughout the German route network and replace the more than 30-year-old tower railcars of the DB class 704 . From February 2014 4 more vehicles were delivered following a follow-up order.
literature
- Peter Hechenberger, Andreas Pfingstli: New maintenance vehicle for overhead contact line systems. In: EI - The Railway Engineer. 06/2009, ISSN 0013-2810 , pp. 47-49, robel.info (PDF; 0.9 MB).
Web links
Individual evidence
- ↑ Thomas Linberg: Series 711.2. Retrieved May 17, 2010 .
- ↑ a b press release: ROBEL hands over maintenance vehicle with ETCS to DB Netz AG. (No longer available online.) ROBEL Bahnbaumaschinen, March 14, 2014, archived from the original on March 22, 2014 ; accessed on March 22, 2014 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
