Class U special wagon
In the genre of underground UIC are grouped all those freight cars of the special designs according to the type designation system for freight wagons that do not belong to the genera of F, H, L, S or Z.
These are ( in descending order by number in the DB):
- Tank wagons for the carriage of powdery goods,
- Transition car between different coupling systems,
- Tiefladewagen including Schnabel car,
- Hopper car with cargo doors and
- The test vehicle systems Road Railer and Kombirail for combined transport.
Between 1964 and 1979, the tank wagons for the carriage of liquid and gaseous products ( tank wagons ) were assigned to the genus U before the genus Z formed in 1980.
Tank wagons for the carriage of powdery goods ( Powder products wagons )
Powder products wagon of the wagon is a special container, which is designed for conveying of dusty materials. These cars are unloaded pneumatically, to which compressed air is used most often. For goods that can with the oxygen, which is located in the conveying air, react, nitrogen is usually used. These cars are used for goods that are so fine -grained that they are not or only poorly flowable and thus a gravity discharge is not possible, such as cement. As rail freight cars, they carry the generic letter U with the addition of c. You normally do not feed air generator and are therefore dependent on an external air feeder.
Tiefladewagen
These wagons have been designed for the metropolitan area and heavy transport of goods, which would not meet the clear space on normal freight wagons. This group includes a wide variety of designs, which range from two-axle low-loader wagons up to 36 - axle heavy vehicles.
New genus, all Tiefladewagen is Ui and can optionally be supplemented by the letters a, aa, k, kk or s. The load limit is not encoded at Tiefladewagen as a code letter. The former German car type was St or SH
At DB 1998 a total of 180 Tiefladewagen 43 different types were set. They are used, inter alia, Transport of combine harvesters, generators or narrow-gauge vehicles.
Schnabel car
The largest low-loader wagons are designed as Schnabel car, which consist of two completely separate parts. Each part is supported by multi-axle bogies bogie or groups. Then each supported beak-like brackets which in turn bear a deep sunken loading platform or are directly connected to the usually very large cargo. The load in this case is self -supporting temporary part of the vehicle. The vehicles are equipped with hydraulic equipment with which the load can be lifted or moved horizontally to vorbeizumanövrieren of obstacles. There are about 30 copies per Schnabel cars in Europe, North America and Asia.
Typical transport goods are big power plant boiler, turbine parts or machines transformers for power plants. Because of the great weight and oversize charges of these shipments can not be done with normal freight trains in general. They run as a special train and require careful preparation. As soon as the car and its cargo because of the size and weight has transport restrictions, is spoken by an " extraordinary mission ", which is labeled in accordance with RIV with a " pattern U". Without loading the two support arms are connected directly to each other; the vehicle can then ride at normal speed for freight trains.
List of selected Tiefladewagen
The rail -wagons fitted with special equipment of the type Uaai are marketed exclusively by the heavy-duty Heavy Cargo Service Department of Nuclear Cargo Service GmbH Europe.
Hopper car with cargo doors
A series of funnel-shaped Selbstentladewagen be classified as a special car. Their external appearance is similar to the open hopper cars, but they have a closed roof with hatches and therefore does not meet the criteria for a movable-roof wagons.
The DB has included some Kaliwagen adopted by the DR with four cargo doors under the genus Uaoos -y. Part of this car has now been fitted with swivel roofs.
In the SNCF, a large number of grain cars in use, which are grouped as a special car.
Side-tipping wagons
Rarely, Side-tipping wagons are classified as special car, if they do not meet the criteria for an open freight cars, the special design.