Henschel DHG 1100 BB
| Henschel DHG 1100 BB | |
|---|---|
 Henschel DHG 1100 BB at the Rhodope Railway
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| Numbering: | FEVE 1401–1405 BDŽ: 75 001–010 |
| Number: | 15th |
| Manufacturer: | Henschel |
| Year of construction (s): | 1964-1966 |
| Axis formula : | B'B ' |
| Gauge : | 1000 mm (FEVE) 760 mm (BDŽ) |
| Length over buffers: | 13,040 mm |
| Height: | 3,520 mm |
| Width: | 2,470 mm |
| Trunnion Distance: | 6,500 mm |
| Bogie axle base: | 1,900 mm |
| Total wheelbase: | 8,400 mm |
| Smallest bef. Radius: | 40 m |
| Empty mass: | 44.5 t |
| Service mass: | 48 t |
| Wheel set mass : | 12 t |
| Top speed: | 70 km / h - 90 km / h |
| Installed capacity: | 809 kW (1100 hp) |
| Starting tractive effort: | 147 kN |
| Wheel diameter: | 900 mm |
| Motor type: | Maybach Mb 820 port |
| Motor type: | Twelve-cylinder four-stroke diesel engine |
| Rated speed: | 1,500 min -1 |
| Power transmission: | hydrodynamic |
| Tank capacity: | 1,800 l |
The Henschel DHG 1100 is the name of a series of four-axle diesel-hydraulic locomotives that were developed by Henschel in the 1960s for railways from 750 mm to 1067 mm gauge. Locomotives of this type series had an output of 1,100 to 1,500 hp. The maximum speed of the locomotives was 70 km / h to 90 km / h, depending on the gauge .
history
The prototype of these locomotives was tested on the Osterode – Kreiensen circuit .
1964–1966 five 1000 mm narrow gauge locomotives were built. They were delivered to the Ferrocarril Minero de Sierra Menera in Spain and, after they were discontinued, sold to the state narrow-gauge railway company FEVE . One of these locomotives is at the Compagnie ferroviare du Sud-France (CFSF), formerly Chemins de fer de Provence (CP) on the route Nice-Digne-les-Bains in France, other than D5 in Brohltalbahn where five Tons of ballast weights removed and the front section visually matched to the DB class V 160 .
In the early 1960s, the Bulgarian state railways BDŽ dealt intensively with a dieselization program that provided the Rhodope Railway with suitable locomotives. After the ÖBB series 2095 proved to be too weak during test drives and negotiations with Simmering-Graz-Pauker about a more powerful locomotive were unsuccessful, the DHG 1100BB was chosen for the Rhodope Railway with 1,100 hp.
A total of ten locomotives were bought as class 75 from the BDŽ and delivered in 1965/66. The locomotives were designed for use on the mountain railway for a temperature range of −38 ° C to +42 ° C. In their more than 50 years of service they were exclusively in use on the Rhodope Railway and took over the entire traffic of all trains from the steam locomotives and railcars. They proved themselves exceptionally well on the 124 km long narrow-gauge railway, where there were gradients of up to 30 ‰ and a minimum curve radius of 60 m and the highest station Avramowo is at 1,267 m above sea level . Up to this point, 1,029 meters of altitude have to be overcome. The freight trains could be carried by one locomotive instead of two steam locomotives.
In the passenger train service with trains, significantly more travelers could be transported than with railcars. In 1976/77 the series 76 locomotives , manufactured under license and manufactured by FAUR , followed, but were not used on the Rhodope Railway. It was not until 1988 that the BDŽ class 77 , also built by FAUR, was delivered to the Rhodope Railway to reinforce the ever-increasing traffic in order to compensate for the high number of damaged locomotives of the class 75. The new locomotives turned out to be very prone to failure, so that the operations service kept falling back on the more robust 75 . In 2000, nine of the ten machines were still in operation. Only then did the stoppages and decommissioning begin, so that in 2010 there were three operational locomotives, three in the Septemwri depot, two in the same depot as spare parts donors and only two scrapped locomotives. The locomotives are considered to be more reliable than the 20 years younger Romanian locomotives, so that in 2012 three locomotives of the series still handle the now much thinned out total traffic of the line. A few class 77 locomotives are only used for reinforcement at the weekend.
technical description
The locomotives were derived from the DB class V 160 . At the beginning of the 1960s, a narrow-gauge diesel locomotive with the designation DH 1500 BB was created for the Sudan , from which the above-mentioned model series emerged. The locomotive is a box locomotive with two end cabs. The locomotive body is placed on the underframe, consisting of welded profiles. The engine room is located between the driver's cabs, each of which has an operator's cab on the right-hand side with the drive switch almost in the middle. This is divided into the soundproofed engine compartment behind the driver's cab I and the cooler compartment behind the driver's cab II . The locomotive body is supported by coil springs on the bogies. The locomotives are equipped with a manually operated central buffer coupling , the so-called Bosna coupling . There are flaps in the vehicle roof through which the large aggregates of the machinery can be lifted out.
The locomotives are powered by a twelve-cylinder four-stroke diesel engine from Maybach-Motorenbau with the designation MB 820 Bb , it develops 1,100 hp at 1,500 rpm. This engine is also equipped with turbocharging and intercooling. The engine is water-cooled and is recooled by a cooling system placed under the roof. The cooling air for this is sucked into the side walls and blown out through the roof. The torque is by a short propeller shaft to the fluid transmission L306r of Voith passed. This transmission comprises three hydraulic converters and is also provided with a hydraulic brake . From there, both bogies are driven via cardan shafts.
The 75 series locomotives also had a boiler for heating the car. The locomotives also carried a water tank with a capacity of 1,300 l. The original color scheme of the locomotives was dark red with silver trim. Later a lighter red was used for major touch-ups.
literature
- Paul Engelbert: Narrow gauge through Bulgaria , Stenvalls Verlag, Malmö 2002, ISBN 91-7266-155-0
- Markus Strässle: Always a favorite . In: railway magazine . No. 10 , 2015, ISSN 0342-1902 , p. 46-47 .
Web links
- Website about narrow-gauge locomotives with mention of the BDŽ class 75
- Travel report from Bulgaria in the locomotive report from 2012 with mention of the Rhodope Railway
- Report in the Bimmelbahn-Forum with many photographs from the 75 series
- Narrow-gauge Henschel diesel locomotives at le-rail.ch
Individual evidence
- ^ Paul Engelbert: Narrow gauge through Bulgaria , Stenvalls Verlag, Malmö 2002, ISBN 91-7266-155-0 , page 79
- ↑ Paul Engelbert: Schmalspurig durch Bulgarien , Stenvalls Verlag, Malmö 2002, ISBN 91-7266-155-0 , page 100
- ↑ Paul Engelbert: Schmalspurig durch Bulgarien , Stenvalls Verlag, Malmö 2002, ISBN 91-7266-155-0 , page 97
- ^ Report from Bulgaria with mention of the Rhodope Railway on Lok-Report.de
- ↑ Photo of the driver's cab at the BDZ 75
