RhB Be 4/4

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Be 4/4
Be 4/4 515 of the Rhaetian Railway near Rhäzüns
Be 4/4 515 of the Rhaetian Railway near Rhäzüns
Numbering: 511-516
Number: 6 (4 + 2)
Manufacturer: FFA, SAAS
Year of construction (s): 1971, 1979
Axis formula : Bo'Bo '
Gauge : 1000 mm ( meter gauge )
Length over buffers: 18.7 m
(three-part shuttle train 55.8 m)
Service mass: 44.6 t
Friction mass: 44.6 t
Wheel set mass : 11.2 t
Top speed: 90 km / h
Hourly output : (1156 PS)
h output on motor shaft 4 × 196 kW = 784 kW
Acceleration: 0.8 m / s²
Braking delay: 0.8 m / s²
Power system : 11 kV 16.7 Hz
Power transmission: Pantograph
Number of traction motors: 4th
Brake: electrical resistance brake
Locomotive brake: mechanical handbrake
Train brake: Electropneumatic air brake type Oerlikon
Coupling type: + GF + - suburban railway coupling (GFV)
Seats: 40
(three-part train 12 1st class, 136 2nd class, 22 folding seats)
Classes : 2 class
Particularities: Multiple controls

The six EMUs of series Be 4/4 with numbers 511-516 are used in the Rhaetian Railway (RhB) in regional transport used.

history

In the 1960s, the RhB was confronted with steadily increasing numbers of passengers and increasing demands on rolling stock. The demands of the passengers on the rolling stock had changed. This prompted the RhB to conduct in-depth studies of what kind of new rolling stock should be purchased. These showed, among other things, that there was a need for a modern vehicle concept in suburban traffic around Chur. At the end of October 1968, the RhB decided to order four modern three-part shuttle trains. In addition to suburban traffic around Chur, these should also be able to be used for sports trains.

In 1971 the companies FFA (car bodies), SIG (bogies) and SAAS (electrical equipment) delivered the first four railcars (numbers 511-14) to the RhB, at that time the first standard railcars in Switzerland with stepless electronic power control (phase control by means of thyristors ). At the same time, the RhB put the matching intermediate cars B 2411-14 and ABDt 1711-14 control cars into service, so that four three-part shuttle trains could be formed. In contrast to the rest of the RhB rolling stock, the Be 4/4 shuttle trains have automatic couplings and air brakes ; mixed use with other vehicles is therefore not possible. In 1979 the RhB procured two more practically identical trains with the end numbers 15 and 16. After four additional intermediate cars (B 2417-20) were added in 1988, four-part trains could also run. From 1994 the vehicles went through an extensive refit program , with the electrical equipment being completely renewed with the exception of the traction motors.

Technical

The railcars are made of welded steel. These had to be viewed statically as a new construction, which is why load tests with corresponding measurements were carried out on the body shell. In contrast, the accompanying cars have fully welded light metal car bodies. The entire train composition was designed from the start to be operated by one man. Therefore, all doors are equipped with a pneumatic door lock that can be operated from the driver's cab (side-selective door release). The doors have push-button preselection buttons next to the doors. They also have an automatic door closing mechanism that automatically closes the doors when the vehicle starts and keeps them closed while driving. When it came to the interior design, care was taken to ensure that enough handrails were available, as standing passengers had to be expected in the planned use. All axes are disc braked. The bogies are provided with side links and have no pivot pins. The railcar has two two-axle bogies with single-axle drive, the axle formula is accordingly Bo'Bo '. The drive motors are arranged in opposite directions with appropriately adapted gears. This - although more complex - arrangement has advantages in the smooth running of the bogie. The built-in multiple control is designed for the operation of up to three units. In order to ensure quick coupling and uncoupling, automatic + GF + couplings were installed in the version for suburban railways (GFV), in which, in addition to the mechanical connection, the electrical and pneumatic lines are also coupled.

The vehicles have an acceleration of 0.8 m / s². The maximum permitted speed is 90 km / h. The electric brake can also brake the train down to a speed of 20 km / h with a delay of 0.8 m / s². Below this, the electro-pneumatic brake switches on automatically to compensate for the drop in braking power of the electric brake. The electric brake is also designed for the continuous load that occurs when used as an inertia brake on a fully loaded train on a 45 ‰ gradient (e.g. Davos - Küblis). The hourly output is 780 kW at 45 km / h.

Operational

Be 4/4 512 and Hippsche Wendescheibe in Glaris, 1986

The railcar itself offers 40 2nd class seats. The ordered train with a B-intermediate car and the control car offers a total of 12 1st class seats, 136 2nd class seats and an additional 22 folding seats .

The main area of application for suburban commuting was and is regional transport in the Chur area . Assignments on the Davos - Filisur route and in the Upper Engadin remained short episodes.

In the late evening of September 11, 2011, the control car and the following car of a train derailed on the Carrerabach bridge (between Reichenau and Ilanz ) as a result of a cone of rubble. Three occupants were slightly injured in the accident and the vehicle suffered major property damage.

Despite the fact that the Be 4/4 will be replaced by the new ABe 4/16 , the damaged ABDt 1716 control car was rebuilt in the main workshop in Landquart. For this purpose, parts of the intermediate car B 2415, which was also part of the train involved in the accident, were used. This served as a spare parts donor and was canceled in May 2012.

literature

  • W. Wegmann: The local shuttle trains of the Rhaetian Railway (RhB) In: Eisenbahn Amateur 2/1975 pages 53–57
  • Franz Skvor: 25 years of thyristor shuttle trains on the Rhaetian Railway . In: Swiss Railway Review 5/1996.
  • Daniel Brunner and Leo Fäh: Refit campaign for the thyristor shuttle trains of the Rhaetian Railway . In: Swiss Railway Review 5/1996.
  • Wolfgang Finke, Hans Schweers: The vehicles of the Rhaetian Railway: Locomotives, railcars, tractors . In: Wolfgang Finke (Ed.): The vehicles of the Rhaetian Railway, 1889–1996 . tape 3 . Schweers + Wall, Aachen 1998, ISBN 3-89494-105-7 (223 pages, [ limited preview in the Google book search]).

Web links

Commons : RhB Be 4/4 511–516 with B and ABDt  - collection of images, videos and audio files

Individual evidence

  1. As a result of storms: Derailment on the RhB Reichenau-Tamins - Ilanz line. Bahnonline.ch, September 12, 2011, accessed on October 16, 2018 .