EP3795444B1 - Work train - Google Patents

Description

technical field

The invention relates to a work train for firefighting and/or for rescuing people and/or for processing a track, comprising two rail vehicles that can be moved on the track and are connected to one another, one rail vehicle being a railcar and the other rail vehicle being a liquid tank car.

State of the art

From the WO 2018/137871 A1 a work train is known, which is formed from two railcars and a liquid tank car arranged between them. This work train is intended in particular for fighting fires and rescuing people in a tunnel. Each railcar includes a crew cabin or a first-aid room to accommodate and care for injured people.

The CN 103 395 425 A discloses a rescue train with a liquid tank car. In this case, a liquid tank extending from a car floor to a car roof is arranged. Separated from this by a vertical wall is a staff room. It is not possible to go through the liquid tanker.

Presentation of the invention

The invention is based on the object of improving a work train of the type mentioned at the outset in such a way that the picking up and distribution of people is simplified.

According to the invention, this object is achieved by the features of claim 1. Dependent claims specify advantageous refinements of the invention.

In this case, a connection area of the railcar and the liquid tank car includes a passage for people who Liquid tank wagon comprises a liquid tank in a lower area and a walk-in passenger compartment is arranged above the liquid tank. This allows people to move between the railcar and the liquid tanker. For example, water for spray formation or an extinguishing agent is stored in the liquid tank. In particular, rescue or operating personnel have the option of getting from the railcar to the aggregates and extinguishing equipment in the liquid tanker without having to step onto the track. The passenger compartment in the liquid tank is also available for people rescued in the event of a train accident.

The liquid tank is advantageously designed with an approximately rectangular cross section. This means that a large storage volume is available with a flat design. The flat design increases the overall height of the passenger compartment while at the same time maintaining a specified clearance gauge of a track that is being used.

In a development of the invention, the liquid tank is coupled to a heating device in order to control the temperature of the liquid stored in the liquid tank. In this way, the work train can be used universally. For example, untreated extinguishing water can be stored over a longer period of time even at low outside temperatures.

According to the invention, the liquid tanker comprises a vehicle frame which is supported on two rail carriages and carries the liquid tank, with a pumping device being arranged between the rail carriages below the liquid tank. In this way, the space between the rail carriages is optimally used in order to provide extinguishing agents with a predetermined operating pressure by means of the liquid tanker.

In this case, it is advantageous if the railcar and possibly another rail vehicle connected to the liquid tanker have extinguishing devices which are connected to the pumping device via lines. The wagons connected to the liquid tanker therefore do not require their own pumps to pump an extinguishing agent stored in the liquid tank.
The arrangement of a separate foam tank below the liquid tank or in the liquid tank is advantageous. This means that extinguishing water stored in the liquid tank can be mixed with the foam agent carried in the foam tank via a dosing device if required. Stand this way several types of extinguishing agents are available in order to be able to fight different sources of fire.

Advantageously, the passage between the liquid tank car and the railcar and possibly between the liquid tank car and another rail vehicle is secured with a flexible cover to the outside. This increases personal safety. For example, sprayed extinguishing agents or smoke gases are prevented from entering the passageways. In addition, it is possible to walk on it without any problems while driving at high speeds.

A development of the liquid tanker provides that a stairway is arranged between the passageway and the passenger compartment in order to overcome a height difference between a floor level of the passageway and a higher floor level of the passenger compartment. Due to the higher floor level of the passenger compartment, there is more installation space for the liquid tank, which increases the storage capacity for extinguishing agents. In this case, it is advantageous if the liquid tank has a stepped or slanted upper side below the stairway. The shape of the liquid tank is thus adapted to the crate, with a correspondingly optimized storage capacity.

In a further improvement, the passenger compartment has an aisle area in the longitudinal direction, with lounge areas being arranged on both sides of the aisle area. The central aisle area is advantageously designed with a higher headroom than the lounge area. This is made possible by the higher permissible room height in the central area of a clearance gauge to be maintained for a track that is used. In this way, the passenger compartment takes up less height overall, so that more overall height is available for the liquid tank arranged underneath.

For a more flexible use of the work train, it is advantageous if the liquid tanker is connected to another rail vehicle with an additional passage for people in the connection area. For example, another carriage with a recreation room and/or a storage room is arranged. The additional rail vehicle can also be designed as a second railcar, so that overall there is greater traction for the work train.

Favorably, the railcar and the other rail vehicle are accessible via the passenger compartment of the liquid tanker and the passages for people. This means that even with three rail vehicles connected to one another, people can safely move between the wagons without having to step onto the track. This is particularly advantageous on routes with oncoming traffic, in narrow passages and in tunnels.

Brief description of the drawings

Fig. 1

Arbeitszug in Seitenansicht

Fig. 2

Flüssigkeitstankwagen in Schrägansicht ohne Dach

Fig. 3

Flüssigkeitstankwagen von schräg oben ohne Dach

Fig. 4

Querschnitt durch Flüssigkeitstankwagen

Fig. 5

Seitenansicht des Flüssigkeitstankwagens

Fig. 6

Draufsicht des Flüssigkeitstankwagens

The invention is explained below in an exemplary manner with reference to the accompanying figures. They show in a schematic representation:

1

Working train in side view

2

Liquid tanker in an oblique view without a roof

3

Liquid tanker from above without a roof

4

Cross section through liquid tanker

figure 5

Side view of the liquid tank truck

6

Top view of liquid tank truck

Description of the embodiments

a in 1 The work train 1 shown comprises a liquid tank car 2 in the middle, which is connected at one end to a railcar 3 and at the other end to another rail vehicle 4 . The three interconnected rail vehicles 2, 3, 4 each have a vehicle frame 5 which can be moved on rail chassis 6 on a track 7.

The railcar 3 includes a driver's cab 8 and a usable space accessible from the track 7 via a door 9 for operating personnel, aggregates and material. The other rail vehicle 4 is the second, for example Trained railcar and also includes a driver's cab 8 and a usable space accessible from the outside. As an alternative to this, the further rail vehicle 4 can be in the form of a material wagon or passenger wagon.

In a simple form, the liquid tanker 2 is only connected to a railcar 3 . At the end of the liquid tank car 2 facing away from the railcar 3, a driver's cab 8 is then also useful. In this way, the working train 1, which consists of two cars 2, 3, can be moved in both directions as specified. This additional driver's cab 8 of the liquid tanker 2 advantageously has a front door 9 .

In the case of an expression as a fire and rescue vehicle, 8 extinguishing devices 10 are arranged on the driver's cabs. Further extinguishing devices 10 can also be attached to the liquid tanker 2 . An extinguishing agent carried along in the liquid tanker 2 is supplied to the extinguishing devices 10 for fighting a fire. The volume of a liquid tank 11 arranged in the liquid tanker 2 comprises several cubic meters in order to be able to extinguish a fire in a tunnel, for example, without the external supply of additional extinguishing agent.

In one version as a work train for track construction work, the other rail vehicle 4 is designed as a track construction machine. During track construction work such as track tamping or ballast cleaning, heavy dust formation occurs, which can be reduced with a spray mist. In this case, the liquid tanker 2 is used to provide liquid for generating a spray. Here, too, the volume of the liquid tank 11 is a few cubic meters in order to have enough liquid in stock for a work shift.

The individual rail vehicles 2, 3, 4 are connected with either permanent or detachable connections 12. When using permanent connections 12, the rail vehicles 2, 3, 4 can only be separated for maintenance purposes or to put together a new work train 1. Otherwise, the work train 1 forms a unit from each other connected rail vehicles 2, 3, 4. In the case of detachable connections 12, the rail vehicles 2, 3, 4 are connected to couplings which can be released by railway personnel on track 7. The liquid tanker 2 can thus be integrated into another work train 1 at any time.

According to the invention, a passage 14 for people is provided in a connecting area 13 of the liquid tanker 2 and the railcar 3 . This passage 14 is suitably secured to the outside with a flexible sheath 29 . The connection area 13 of the liquid trolley 2 and the further rail vehicle 4 is designed in a corresponding manner.

An advantageous structure of the liquid tanker 2 is with reference to the Figures 2 to 6 explained, where in the figures 2 and 3 the roof has been omitted for clarity. The vehicle frame 5 comprises longitudinal members 15, 16 and cross members 17 and is supported on two rail chassis 6, which are preferably designed as two-axle or three-axle bogies. With a three-axle design, a larger liquid tank volume can be achieved with the same wheel loads.

The vehicle frame 5 carries the liquid tank 11 and distributes the weight forces to the rail chassis 6. The liquid tank 11 occupies the entire width of the car 2 and has an approximately rectangular cross section over almost its entire length. A stepped or sloping upper side 18 of the liquid tank 11 is only provided in a central area on the front side in order to create space for a respective stair 19 .

In addition, it is favorable if the outer longitudinal members 15 of the vehicle frame 5 have a higher cross section than the inner longitudinal members 16. The liquid tank 11 rests on the inner longitudinal members 16 and the cross members 17. The liquid tank 11 is laterally supported by stepped longitudinal edges 20 on the outer longitudinal members 15.

The height of the liquid tank 11 is based on a permissible total height of the car 2 minus an intended room height of a passenger compartment 21 arranged above it. This passenger compartment 21 extends essentially over the entire length of the carriage 2 and is divided into a central aisle area 22 and lateral accommodation areas 23 .

The aisle area 22 can be reached from the passages 14 at the front via a staircase 19 . Thus, the passenger compartment 21 forms both a transit option and a lodging option for the entire work train 1 . It is advantageous here if the floor level of the aisle area 22 is lower than the floor level of the occupied areas 23 . Correspondingly, the liquid tank 11 has an indentation 24 below the aisle area 22 . With this, the room height of the aisle area 22 and the volume of the liquid tank 11 are optimized without changing the overall height of the car 2 .

The lounge areas 23 arranged on both sides of the aisle area 22 are usefully equipped with benches 24 . This means that there are lower requirements for the room height here. Due to the design as a seating area, there is also optimal use of the existing car space under a sloping car roof.

A passage opening 26 for people is arranged on each end face of the liquid trolley 2 . The respective passage opening 26 can be closed by means of a door 9 when the liquid trolley 2 is uncoupled. In addition, the respective through-opening 26 is delimited at the bottom by a tread plate 27 . A flexible passage frame 28 serves as a boundary at the side and at the top. In the work train 1, the passage frames 28 of the respective interconnected carriages 2, 3, 4 together with the tread plates 27 form the flexible casing 29 of the respective passage 14.

A pumping device 30 is arranged below the liquid tank 11 between the rail carriages 6 . The pumping device 30 comprises at least one pump, which is mounted on the vehicle frame 5 with a bracket. The pumping device 30 is connected to an energy supply arranged in the railcar 3 via supply lines. As an alternative to this, the liquid tanker 2 itself includes an energy supply, for example a motor-generator unit with its own fuel tank. In In this case, the pumping device 30 can also be operated without the liquid tanker 2 being incorporated into the work train 1 . For example, in the parked state, the liquid tank 11 can be filled by means of the pump device 30 .

The energy supply can also be used to supply a heating device 31 coupled to the liquid tank 11 . For example, a heating coil is arranged in the liquid tank 11 and is connected to an on-board network via a converter. The contents of the liquid tank 11 are thus kept frost-free even at outside temperatures below freezing. Additional thermal insulation of the liquid tank 11 is useful here, for example with a double-walled design and insulating material arranged between them.

The pump device 30 is connected to the liquid tank 11 and to the units arranged on the work train 1 via pump lines. These are either extinguishing devices 10 or other aggregates that use the stored liquid tank contents for operations on track 7. In addition, remotely controllable valves are arranged in the line connections. For example, the liquid tank 11 can be connected to a filler neck by actuating a valve via the pump device 30 .

A foam tank 32 for the formation of a foam extinguishing agent is advantageously arranged below the liquid tank 11 . As an alternative to this, the foam tank 32 can also be accommodated as a separate tank within the liquid tank 11 . When used, extinguishing water carried along in the liquid tank 11 is mixed with foaming agent from the foam tank 32 by means of a dosing device 33 . The resulting foam extinguishing agent is pumped to the extinguishing devices 10 via lines. In this case, the pumping device 30 is set up to flush the lines with water after the use of foam extinguishing agent in order to avoid deposits in the lines.

Claims (9)

1. Work train (1) for firefighting and/or for rescuing persons and/or for maintaining a track (7), comprising two rail vehicles which can be moved on the track (7) and are connected to one another, with one rail vehicle being a motor coach (3) and the other rail vehicle being a liquid tank wagon (2), characterised in that a connecting area (13) of both rail vehicles (2, 3) comprises a passage (14) for persons, that the liquid tank wagon (2) comprises a liquid tank (11) in a lower area, and that an accessible room for persons (21) is arranged above the liquid tank (11), that the liquid tank wagon (2) comprises a vehicle frame (5) which is supported on two rail-based running gears (6) and carries the liquid tank (11), and that a pump device (30) is arranged between the rail-based running gears (6) below the liquid tank (11).
2. A work train (1) according to claim 1, characterised in that the liquid tank (11) is coupled to a heating device (31) to control the temperature of the liquid stored in the liquid tank.
3. A work train (1) according to claim 1 or 2, characterised in that the motor coach (3) and, if applicable, a further rail vehicle (4) connected to the liquid tank wagon (2) have extinguishing devices (10), which are connected to the pump device (30) via pipes.
4. A work train (1) according to one of the claims 1 to 3, characterised in that a separate foam tank (31) is arranged below the liquid tank (11) or in the liquid tank (11).
5. A work train (1) according to one of the claims 1 to 4, characterised in that the passage (14) is secured from the outside with a flexible cover (29).
6. A work train (1) according to one of the claims 1 to 5, characterised in that a staircase (19) is arranged between the passage (14) and the room for persons (21) for overcoming a difference in height between a floor level of the passage (14) and a higher floor level of the room for persons (21).
7. A work train (1) according to one of the claims 1 to 6, characterised in that the room for persons (21) has a corridor area (22) in the longitudinal direction and that common areas (23) are arranged on both sides of the corridor area (22).
8. A work train (1) according to one of the claims 1 to 7, characterised in that the liquid tank wagon (2) is connected to a further rail vehicle (4), with a further passage (14) for persons in the connecting area (13).
9. A work train (1) according to claim 8, characterised in that the motor coach (3) and the further rail vehicle (4) are accessible to persons via the room for persons (21) of the liquid tank wagon (2) and the passages (14).

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