Tank vehicle for a fire-fighting and rescue train

Abstract

A tank vehicle (10) for a fire and rescue train comprises a plurality of liquid tanks (1) and an underbody (2) containing at least two rail bogies (13, 14). The underbody (2) is designed to support the liquid tanks (1), with the liquid tanks (1) forming a first outer wall (3) and a second outer wall (4) of the tank vehicle (10). The liquid tanks (1) in a first row (11) and a second row (12) are arranged one behind the other, such that a walkable passageway (5) for passengers is formed between the liquid tanks (1) of the first row (11) and the liquid tanks (1) of the second row (12).

Description

background

[0001] The present invention relates to a tank vehicle for a fire and rescue train. Such tank vehicles are used, for example, as tunnel rescue vehicles for rail transport. In particular, the tank vehicle can be configured as a fire engine. State of the art

[0002] Document EP 3 795 444 A1 discloses a work train used for firefighting, consisting of two railcars and a liquid tank car positioned between them. A connecting section between the railcar and the liquid tank car includes a passageway for personnel. The liquid tank car contains a liquid tank in its lower section. A walk-in passenger compartment is located above the liquid tank, allowing personnel to move between the railcar(s) and the liquid tank car. Object of the invention

[0003] The object of the invention is to develop a tank vehicle for a fire and rescue train, capable of transporting a large quantity of liquid. Filling the liquid tank should be simple. A further object of the invention is to ensure that persons can pass through the tank vehicle to reach the locomotive(s) or other tank vehicles without having to leave the train. Another object of the invention is to ensure that the liquid transported in the tank vehicle is transported safely and that the inertial forces acting on the liquid tank during acceleration or braking maneuvers do not cause damage to the liquid tank, the vehicle floor, or the running gear. Description of the invention

[0004] The problem of the invention is solved by a tank vehicle according to claim 1. Advantageous embodiments of the tank vehicle are the subject of claims 2 to 15.

[0005] When the term "for example" is used in the following description, it refers to exemplary embodiments and / or configurations, which is not necessarily to be understood as a preferred application of the teaching of the invention. Similarly, the terms "preferably" and "preferred" are to be understood as referring to one example from a set of exemplary embodiments and / or configurations, which is not necessarily to be understood as a preferred application of the teaching of the invention. Accordingly, the terms "for example," "preferably," or "preferred" may refer to a plurality of exemplary embodiments and / or configurations.

[0006] The following detailed description contains various embodiments of the tank vehicle according to the invention. The description of a particular tank vehicle is to be considered exemplary only. In the description and the claims, the terms "contain," "comprise," and "have" are interpreted as "contained, but not limited to."

[0007] In the following, the term stiffness of the tank vehicle means the resistance of the tank vehicle, in particular the liquid tanks, to deformation caused by a load acting on the liquid tanks, especially by inertial forces that arise on the liquid tanks during sudden changes in speed.

[0008] A tank vehicle according to the invention comprises a plurality of liquid tanks and an underbody containing at least two rail bogies, the underbody being designed to support the liquid tanks. The liquid tanks form a first outer wall and a second outer wall of the tank vehicle. The liquid tanks are arranged one behind the other in a first row and a second row, such that a walkable aisle for passengers is formed between the liquid tanks of the first row and the liquid tanks of the second row. The liquid tanks can all have the same shape and / or contain the same liquid volume, but they can also have different shapes and / or contain different liquid volumes.

[0009] According to one embodiment, the first outer wall is formed by the liquid tanks of the first row, and the second outer wall is formed by the liquid tanks of the second row. According to this embodiment, an additional covering of the liquid tanks can be omitted. In particular, the outer wall can be designed as a double wall. The outer wall can contain insulation to prevent the liquid in the tank from cooling below freezing and thus prevent ice formation.

[0010] According to one embodiment, the liquid tanks of the first row form a first inner wall, and the liquid tanks of the second row form a second inner wall. The first and second inner walls form, in particular, the lateral boundaries of the walkable passageway. According to one embodiment, the first and second inner walls are essentially planar. In particular, the inner wall can be designed as a double wall. The double wall comprises a plurality of wall elements. A space filled with a gaseous medium can be formed between the wall elements of the double wall. The double wall can comprise a first wall element, a second wall element, and an air gap arranged between the first and second wall elements.

[0011] According to one embodiment, at least one of the first or second rows contains at least two liquid tanks. In particular, each of the first and second rows can contain at least two liquid tanks. For example, each of the first and second rows contains four liquid tanks.

[0012] According to one embodiment, the passageway extends from the underbody to the roof of the vehicle. The roof can be at least partially formed by a cover for the liquid tanks. The roof can rest on support elements that extend from the first inner wall to the second inner wall. These support elements can provide additional stiffening to the vehicle structure formed by the liquid tanks.

[0013] According to one embodiment, each of the liquid tanks contains struts or connecting struts for stiffening at least one of the corresponding inner and outer walls. The struts or connecting struts are connected to at least one of the inner or outer walls, for example, by means of welded connections. According to one embodiment, the struts or connecting struts can form a truss structure in each of the liquid tanks. In particular, the struts or connecting struts can be arranged in the vertical and horizontal directions or include an angle of inclination with respect to the horizontal direction. The term "or" here refers to a logical OR conjunction; in other words, only struts, only connecting struts, or both struts and connecting struts can be provided.

[0014] According to one embodiment, adjacent liquid tanks arranged in the same row each contain a common partition wall. The partition wall is, in particular, designed as a double wall. The double wall comprises a plurality of wall elements. A space filled with a gaseous medium can be formed between the wall elements of the double wall. The double wall, in particular, comprises a first wall element and a second wall element. A gaseous medium, in particular air, is located between the first wall element and the second wall element. In other words, an air gap is located between the first and second wall elements.

[0015] The adjacent liquid tanks in the same row are thus connected to each other via the partition wall. Therefore, each liquid tank in a row is stiffened by the adjacent liquid tank(s) in the same row. If the partition walls are double-walled, with a gaseous medium between the first and second wall elements, this double-walled partition wall can be particularly effective in preventing a liquid column, which forms during sudden changes in velocity within a liquid tank, from being transferred from one liquid tank to the adjacent liquid tank.The gaseous medium located in the space between the two wall elements of the double wall allows the impact force originating from a water column to be absorbed particularly effectively by the intermediate wall; in other words, the intermediate wall designed as a double wall provides increased damping of the impact caused by the liquid column.

[0016] Each of the liquid tanks can contain a heating device. This device heats the liquid to prevent its temperature from dropping below freezing. Even during extended periods of inactivity outdoors in cold weather, this prevents ice formation, thus avoiding damage to the liquid tanks and ensuring the tank vehicle remains operational at all times. For example, the heating device can include at least one heating element located in a sump area of ​​the liquid tank.

[0017] In particular, at least one of the liquid tanks may contain a filling nozzle. All liquid tanks can be filled via a single filling nozzle. Alternatively, one filling nozzle per row may be provided. Alternatively, each liquid tank may have its own filling nozzle. Thus, each liquid tank can be filled individually. It is also possible to fill all liquid tanks of the tank vehicle simultaneously if the liquid tanks are connected to each other via at least one equalization line. At least one of the liquid tanks contains a drain nozzle located in the sump area of ​​the liquid tank. If the sump area has a sloping bottom, the drain nozzle is preferably located at the lowest point of the sump area. A pipeline running in the aisle leads to the drain nozzle(s).

[0018] Seating, such as a bench, may be provided in the aisle. The piping may be located, for example, beneath the seating. Alternatively, the piping may run beneath a floor in the aisle, between the floor and the underfloor, or be located beneath the underfloor. The piping may also be connected to a pump unit, which may be located, for example, beneath the underfloor between the bogies. The piping may extend to the first end of the car and to the second end of the car. In particular, the fluid can be transported to either the first or second end of the car as needed.

[0019] According to one embodiment, at least one of the liquid tanks contains a level sensor for measuring the liquid level in the tank. According to another embodiment, at least one of the liquid tanks in the first row and one in the second row contain a level sensor. The level sensor can be used, in particular, to prevent liquid from overflowing when a liquid tank is being filled.

[0020] According to one embodiment, a gas-filled displacement body, for example in the form of a cylinder, is arranged inside the liquid tank. The liquid volume in the tank can be adjusted by means of this gas-filled displacement body. In particular, the liquid volume can be reduced if the weight of the liquid when full exceeds the permissible payload. The volume of the displacement body can be adjusted depending on the desired reduction in liquid volume. Advantageously, the displacement body is permanently attached to the cover of the liquid tank. When the liquid tank is filled, the displacement body ensures that the weight of the added liquid never exceeds the permissible total weight.The displacement body compensates for design-related variations in the empty weight of the liquid tank, such as different wall thicknesses and / or weight changes due to different internal components. The required volume of the displacement body can be adjusted depending on the actual empty weight of each individual liquid tank.

[0021] According to one embodiment, adjacent liquid tanks are connected via a pressure equalization line, allowing air and liquid remaining in the tanks to circulate between them. One or more pressure equalization lines prevent potentially undesirable overpressure from building up in any of the tanks. In particular, a pressure equalization line can be located near the tank's cover. In other words, a pressure equalization line can connect two liquid tanks in their upper section. Both liquid and air can circulate in such a pressure equalization line, especially if the tank is not completely full or if some of the liquid has already been removed. One or more pressure equalization lines can be located in the sump or lower section of the tank.

[0022] The liquid can be drawn from either the first or the second end of the car. The liquid can also be supplied to the liquid tanks from either the first or the second end. Therefore, appropriate connecting lines or elements for the liquid can be provided at both ends of the car.

[0023] According to one embodiment, the liquid tanks are assembled and / or connected to the underbody using rivets. Of course, it would also be possible to use bolted, welded, or adhesive connections instead of rivets. However, the latter two currently generally require regular inspections. If the connections are difficult to access, these inspections can be costly and time-consuming, potentially increasing the tanker's maintenance costs.

[0024] To save material and weight, the high rigidity of the liquid tanks eliminates the need for underbody reinforcement, as provided for, for example, in EP 3 794 444 A1. In particular, an additional support element at both ends of the wagon is also unnecessary, since the liquid tanks of the first and second rows are connected by support elements that also support the wagon roof. Therefore, these support elements can be used to form a liquid tank module which, when assembled, possesses the necessary dimensional stability, meaning that the liquid tank module itself already has sufficient rigidity, thus surprisingly eliminating the need for underbody reinforcement. This allows the material requirement for the underbody to be reduced by up to 15%.

[0025] Such a rescue train can also include a railcar, a motorized control car, and at least one of the previously described tank vehicles. The tank vehicle can carry at least 40,000 liters of liquid. This liquid can be, in particular, a fire-fighting fluid, such as water. The water can contain further additives, such as foam or wetting agents. The rescue train can have a capacity to accommodate 300 people, either seated or standing. The rescue train can reach a maximum speed of 160 km / h. The propulsion system can be battery-powered, diesel-electric, or electric. Brief description of the drawings

[0026] The tank vehicle according to the invention is described below using several exemplary embodiments. These show Fig. 1 a view of a tank vehicle according to a first embodiment, Fig. 2 a side view of the in Fig. 1 depicted tank vehicle, Fig. 3 a supervision of the in Fig. 1 depicted tanker truck Fig. 4 a view of the tanker truck from the front, Fig. 5 a cross-section through the tanker truck according to the in Fig. 2 depicted sectioning plane AA, Fig. 6 a longitudinal section through the liquid tanks, Fig. 7 a second embodiment for a tank vehicle, Fig. 8 a cut through the in Fig. 7 depicted tank vehicle along the section plane BB in a top view, Fig. 9 a cross-section through a variant that in Fig. 7 The tank vehicle shown, according to a third embodiment, along the section plane BB in a top view. Detailed description of the drawings

[0027] Fig. 1Figure 1 shows a view of a tank vehicle 10 for rail transport according to a first embodiment. The tank vehicle 10 can be part of a rescue train. The tank vehicle 10 comprises a plurality of liquid tanks 1 mounted on a chassis 2. The chassis 2 can be designed as a wagon frame that is movable on rails by means of rail bogies 13, 14. The liquid tanks 1 extend longitudinally along the tank vehicle. The liquid tanks form the first and second outer walls 3, 4 of the tank vehicle 10. The first outer wall 3 is arranged opposite the second outer wall 4. The first outer wall 3 and the second outer wall 4 extend longitudinally along the tank vehicle 10. In particular, the first outer wall 3 is formed by a first part of the liquid tanks 1, and the second outer wall 4 is formed by a second part of the liquid tanks 1.The liquid tanks 1 extend along the first and second outer walls 3, 4 and fill part of the volume of the tank vehicle 10. Fig. 1 Only one such liquid tank 1 is designated as an example.

[0028] In other words, the tank vehicle 10 comprises a plurality of liquid tanks 1 and an underbody 2 containing at least two rail bogies 13, 14. The underbody 2 is designed to support the liquid tanks 1, with the liquid tanks 1 forming a first outer wall 3 and a second outer wall 4 of the tank vehicle 10. The liquid tanks 1 are arranged one behind the other in a first row 11 and a second row 12, such that a walkable passageway 5 for passengers is formed between the liquid tanks 1 of the first row 11 and the liquid tanks 1 of the second row 12.

[0029] The liquid tanks 1 form a plurality of cavities designed for filling with liquid. The liquid can, in particular, comprise a fire-fighting fluid, such as extinguishing water, which may contain further additives, such as foaming or wetting agents. Each cavity has a first or second inner wall 6, 7 opposite the first or second outer wall 3, 4. Between the first and second inner walls 6, 7 is a free space, which is designed as the previously described passage 5, which is Fig. 4 or Fig. 5 As shown, aisle 5 extends from the first end of car 8 to the second end of car 9 of the tank vehicle 10. Aisle 5 can be used by passengers as a waiting area or passageway. Passengers can thus cross through the tank vehicle 10 via this aisle 5.

[0030] According to the in Fig. 1In the illustrated embodiment, the first outer wall 3 is formed by the liquid tanks 1 of the first row 11, and the second outer wall 4 is formed by the liquid tanks 1 of the second row 12. A first inner wall 6 is formed by the liquid tanks 1 of the first row 11, and a second inner wall 7 is formed by the liquid tanks 1 of the second row 12.

[0031] In particular, at least one of the first or second rows 11, 12 contains at least two liquid tanks 1. According to the in Fig. 1In the illustrated embodiment, the first row 11 contains four liquid tanks. The second row 12 also contains four liquid tanks 1. According to the present embodiment, the liquid tanks of the first row 11 are of the same design as the liquid tanks of the second row 12 and are essentially designed for the same capacity. The capacity can be adjusted according to the design of the internal components and any resulting weight differences by means of a displacement body 23, as described below. This ensures that the weight load on the underbody 2 is balanced and effectively prevents the occurrence of uneven loading of the underbody 2.

[0032] Fig. 2 shows a side view of the in Fig. 1The tank vehicle shown in the illustration depicts the second outer wall 4 of the tank vehicle 10. According to the present embodiment, the second outer wall 4 comprises 14 sections. A coupling area 28 adjoins the end 8 of the vehicle and is surrounded by an elastic casing whose shape can adapt to the deflection during cornering. A first section 26 adjoins the coupling area 28 and is designed to accommodate control elements. The second, third, and fourth sections 42, 43, 44 adjoining the first section 26 form a first liquid tank of the second series 12. The fifth, sixth, and seventh sections 45, 46, 47 form a second liquid tank of the second series 12. The eighth, ninth, and tenth sections 48, 49, 50 form a third liquid tank of the second series 12.Sections 51, 52, and 53, eleventh, twelfth, and thirteenth, form a fourth liquid tank of the second series 12. Section 53 connects to a fourteenth section 27, which is designed to accommodate control elements. A coupling area 29, surrounded by an elastic casing whose shape can adapt to the deflection during cornering, connects to the car end 9.

[0033] Fig. 3 shows a supervision of the in Fig. 1 The depicted tank vehicle 10 shows both the first row 11 and the second row 12 of liquid tanks.

[0034] The second, third, and fourth sections 30, 31, and 32, which adjoin the first section 26, form a first liquid tank of the first series 11. The fifth, sixth, and seventh sections 33, 34, and 35 form a second liquid tank of the first series 11. The eighth, ninth, and tenth sections 36, 37, and 38 form a third liquid tank of the first series 11. The eleventh, twelfth, and thirteenth sections 39, 40, and 41 form a fourth liquid tank of the second series 12.

[0035] Fig. 4Figure 1 shows a view of the tank vehicle from one of the wagon ends, here wagon end 8. The aisle 5 extends from the underbody 2 to a wagon roof 15. According to this embodiment, the wagon roof 15 is at least partially formed by covers 22 of the liquid tanks 1. In this illustration, the enclosure of the coupling area 28 surrounds the aisle 5. The coupling area 28 also contains the pipe connections 55 for the liquid, which is conveyed from the liquid tanks 1 to the adjoining wagons. Connection elements 62 for the power supply are also located in the coupling area. Pipe connections 61 for a cooler may also be provided.

[0036] Fig. 5 shows a cross-section through the tanker truck according to the in Fig. 2The section view AA shows the fourth liquid tank of the first row 11 and the fourth liquid tank of the second row 12 in section. The displacement body 23, which is designed as a displacement element, is also visible in the section view. The displacement body is essentially cylindrical. It can be designed as a hollow body in which a gas, for example air, is enclosed. The displacement body is closed with a lid 57, which rests on the cover 22 of the corresponding liquid tank 1.

[0037] Inside the liquid tank 1, a plurality of struts 16 are arranged, which serve to stiffen the liquid tank. The struts run vertically along the first and second inner walls 6, 7 inside the liquid tank 1 and along the first and second outer walls 3, 4 inside the liquid tank 1. In addition, a connecting strut 56 running horizontally across the interior of the liquid tank 1 is shown.

[0038] The sump area 24 of each of the two liquid tanks 1 is also visible in the present illustration. The heating device 18 is arranged in the sump area 24. Two intersecting heating elements 19 are visible on the heating device 18.

[0039] In Fig. 5Two pipes 58 are also visible, leading to the first end of the car 8 and the second end of the car 9, respectively. According to this embodiment, the pipes 58 run under a seat, for example a bench 59, so that they are easily accessible but pose no tripping hazard. Furthermore, no additional installation space is required for the pipes 58 in this embodiment.

[0040] The liquid tank 1 is attached to the underbody 2 below the sump area 14. The rail chassis 14 is located on the underside of the underbody 2.

[0041] Fig. 6Figure 1 shows a longitudinal section through the liquid tanks 1 of the first row 11. This sectional view shows that each of the liquid tanks 1 contains struts 16 for stiffening at least one of the corresponding inner walls 6, 7 and outer walls 3, 4. According to this embodiment, the struts 16 form a truss structure in each of the liquid tanks 1. In particular, the struts 16 are arranged in both vertical and horizontal directions.

[0042] According to the present embodiment, adjacent liquid tanks 1, arranged in the same row 11, 12, contain a common partition wall 17. The partition wall 17 can be designed as a double wall. The double wall comprises a first wall element and a second wall element, wherein a gaseous medium, in particular air, is located between the first wall element and the second wall element.

[0043] According to the present embodiment, each of the liquid tanks 1 contains a heating device 18. The heating device 18 can comprise at least one heating element 19, which is arranged in a sump area 24 of the liquid tank 1. The liquid can be heated by means of the heating device 18 to prevent the liquid temperature from dropping below freezing. Even during extended periods of inactivity of the tank vehicle 10 outdoors in the cold season, ice formation can thus be prevented, thereby avoiding damage to the liquid tanks 1 and ensuring that the tank vehicle 10 remains ready for use at all times, even in the cold season.

[0044] According to the present embodiment, each of the liquid tanks 1 contains a ventilation opening 21, so that each of the liquid tanks 1 can be individually vented or vented.

[0045] According to the present embodiment, at least one of the liquid tanks 1 of the first row 11 and the second row 12 contains a level sensor. The liquid level in all liquid tanks 1 of the first row 11 and the second row 12 can be displayed by means of the level sensor. The liquid tanks 1 are all interconnected via equalizing lines 25. Therefore, in principle, only a single level sensor is required. However, for safety reasons, preferably one level sensor is provided for each of the first and second rows 11, 12. Should one level sensor fail, the redundant reading from the second level sensor can still be used if necessary.

[0046] A gas-filled displacement body 23 can be provided inside the liquid tank 1. The gas-filled displacement body 23 can, for example, have the shape of a cylinder. The liquid volume in the liquid tank 1 can be adjusted by means of the gas-filled displacement body 23. In particular, the liquid volume can be reduced if the weight of the liquid when filled exceeds the permissible payload for the tank vehicle 10. The volume of the displacement body 23 can be adjusted depending on the desired reduction in liquid volume. The displacement body 23 can also be omitted if the corresponding liquid tank can be completely filled with liquid. According to the present embodiment, the displacement body 23 is rigidly connected to the cover 22 of the liquid tank 1.When the liquid tank 1 is filled, the displacement body 23 ensures that the weight of the added liquid never exceeds the permissible total weight. The displacement body 23 compensates for design-related variations in the empty weight of the liquid tank 1, such as different wall thicknesses and / or weight changes due to different internal components. The required volume of the displacement body 23 can be adjusted accordingly, depending on the actual empty weight of each individual liquid tank 1.

[0047] According to the present embodiment, adjacent liquid tanks 1 are connected to each other via a compensating line 25, allowing air and water remaining in the liquid tanks to circulate between them. As shown, one compensating line 25 can be provided in the upper region of the liquid tanks 1; another compensating line can also be arranged in the sump region of the liquid tanks 1, which is not shown in the drawing. Both the liquid tanks of the first and second rows 11, 12 can be connected to each other via compensating lines 25, and the first row 11 can also be connected to the second row 12 via compensating lines 25. Thus, all liquid tanks 1 are in communicative communication with each other.

[0048] Fig. 7Figure 1 shows a view of a tank vehicle 20 for rail transport according to a second embodiment. The same reference numerals are used for identical or equivalent components as in the preceding first embodiment. The tank vehicle 20 can be part of a rescue train. The tank vehicle 20 comprises a plurality of liquid tanks 1 mounted on a substructure 2. The substructure 2 can be designed as a wagon frame that is movable on rails by means of rail bogies 13, 14. The liquid tanks 1 extend longitudinally along the tank vehicle. The liquid tanks form the first and second outer walls 3, 4 of the tank vehicle. The first outer wall 3 is arranged opposite the second outer wall 4. The first outer wall 3 and the second outer wall 4 extend longitudinally along the tank vehicle.In particular, the first outer wall 3 is formed by a first part of the liquid tanks, and the second outer wall 4 is formed by a second part of the liquid tanks. The liquid tanks 1 extend along the first and second outer walls 3, 4 and fill a portion of the volume of the tank vehicle 20.

[0049] In other words, the tank vehicle 20 comprises a plurality of liquid tanks 1 and an underbody 2 containing at least two rail bogies 13, 14. The underbody 2 is designed to support the liquid tanks 1, with the liquid tanks 1 forming a first outer wall 3 and a second outer wall 4 of the tank vehicle 10. The liquid tanks 1 are arranged one behind the other in a first row 11 and a second row 12, such that a walkable passageway 5 for passengers is formed between the liquid tanks 1 of the first row 11 and the liquid tanks 1 of the second row 12, which in Fig. 8 is visible.

[0050] Fig. 8 shows a cross-section through the in Fig. 7 The depicted tank vehicle is shown along the section plane BB in a top view. The liquid tanks 1 are thus shown in section, allowing a view into the interior of the liquid tanks 1.

[0051] The liquid tanks 1 form a plurality of cavities designed for filling with liquid, in particular extinguishing fluid, such as extinguishing water, which may contain further additives such as foam or wetting agents. Each cavity has a first or second inner wall 6, 7 opposite the first or second outer wall 3, 4. Between the first and second inner walls 6, 7 is a space designed as aisle 5. Aisle 5 extends from one end 8 of the tank vehicle 20 to the other end 9. Aisle 5 can be used by passengers as a waiting area or passageway. Passengers can thus cross the tank vehicle 20 via this aisle 5.

[0052] According to the in Fig. 7 and Fig. 8In the illustrated embodiment, the first outer wall 3 is formed by the liquid tanks 1 of the first row 11, and the second outer wall 4 is formed by the liquid tanks 1 of the second row 12. A first inner wall 6 is formed by the liquid tanks 1 of the first row 11, and a second inner wall 7 is formed by the liquid tanks 1 of the second row 12.

[0053] In particular, each first or second row 11, 12 contains two liquid tanks 1. According to the present embodiment, the liquid tanks of the first row 11 are of the same design as the liquid tanks of the second row 12 and are essentially designed for the same capacity. This ensures that the weight load on the underbody 2 is balanced and effectively prevents the occurrence of uneven loading of the underbody 2.

[0054] A gas-filled displacement body 23 can be provided inside the liquid tank 1. The gas-filled displacement body 23 can, for example, have the shape of a cylinder. The liquid volume in the liquid tank 1 can be adjusted by means of the gas-filled displacement body 23. In particular, the liquid volume can be reduced if the weight of the liquid when filled exceeds the permissible payload for the tank vehicle 20. The volume of the displacement body 23 can be adjusted depending on the desired reduction in liquid volume. The displacement body 23 can also be omitted if the corresponding liquid tank 1 can be completely filled with liquid. According to the present embodiment, the displacement body 23 is rigidly connected to the cover 22 of the liquid tank 1.When the liquid tank 1 is filled, the displacement body 23 ensures that the weight of the added liquid never exceeds the permissible total weight. The displacement body 23 compensates for design-related variations in the empty weight of the liquid tank 1, such as different wall thicknesses and / or weight changes due to different internal components. The required volume of the displacement body 23 can be adjusted accordingly, depending on the actual empty weight of each individual liquid tank 1.

[0055] Inside the liquid tanks 1, a plurality of connecting struts 56 are arranged, which serve to stiffen the liquid tanks. According to this embodiment, the connecting struts 56 run in a horizontal direction between the first outer wall 3 and the first inner wall 6 for the liquid tanks 1 of the first row 11. According to this embodiment, the connecting struts 56 run in a horizontal direction between the first outer wall 4 and the first inner wall 7 for the liquid tanks 1 of the second row 12.

[0056] According to the present embodiment, adjacent liquid tanks 1, which are arranged in the same row 11, 12, each contain a common partition wall 17. The partition wall 17 contains a first wall element, which belongs to the liquid tank 1 shown on the left, and a second wall element, which belongs to the liquid tank shown on the right, wherein a gaseous medium, in particular air, is located between the first and second wall elements.

[0057] According to the present embodiment, each of the liquid tanks 1 can also contain a heating device 18, analogous to those described in Fig. 5 or Fig. 6The heating device 18 can be implemented as shown. Analogous to the previous embodiment, the heating device 18 can comprise at least one heating element 19, which is arranged in a sump area 24 of the liquid tank 1. The heating element is omitted in the present illustration. Alternatively or additionally, a heating device 18 can be arranged on one of the outer walls 3, 4 or one of the inner walls 6, 7 or on the underside of the liquid tank 1.

[0058] According to the present embodiment, at least one of the liquid tanks 1 of the first row and the second row contains a level sensor. The liquid level in all liquid tanks 1 of the first row 11 and the second row 12 can be displayed by means of the level sensor. The liquid tanks 1 are all interconnected via equalization lines 25. Therefore, in principle, only a single level sensor is required. However, for safety reasons, preferably one level sensor is provided for each of the first and second rows 11 and 12. Should one level sensor fail, the redundant reading from the second level sensor can still be used if necessary.

[0059] Fig. 9 shows a view of a third embodiment for a tank vehicle 60. Fig. 9 also shows a cross-section through a fire engine analogous to the illustration according to Fig. 7along the section plane BB in a top view. The liquid tanks 1 are thus shown in section, allowing a view into the interior of the liquid tanks 1. The liquid tanks 1 form a plurality of cavities designed for filling with liquid, for example, extinguishing water. Each cavity has a first or second inner wall 6, 7 opposite the first or second outer wall 3, 4. Between the first and second inner walls 6, 7 is a space designed as aisle 5. Aisle 5 extends from one end 8 of the tank vehicle 60 to the other end 9. Aisle 5 can be used by passengers as a waiting area or passageway. Passengers can thus cross the tank vehicle 60 via this aisle 5.

[0060] According to the in Fig. 9In the illustrated embodiment, the first row 11 contains only a single liquid tank 1. The second row 12 contains two liquid tanks 1 with different filling volumes. The liquid tank 1 of the first row 11 forms the first outer wall 3, and the liquid tanks 1 of the second row 12 form the second outer wall 4. The liquid tank 1 of the first row 11 forms a first inner wall 6, and the liquid tanks 1 of the second row 12 form a second inner wall 7.

[0061] This sectional view shows that each of the liquid tanks contains 1 strut 16 for stiffening at least one of the corresponding inner walls 6, 7 and outer walls 3, 4. Fig. 9This shows various options for the arrangement of the struts 16. In the liquid tank located in the first row 11, struts 16 run along the outer wall 3 and the inner wall 6. Connecting struts 56, which traverse the liquid tank, are also shown. It is also possible to provide struts 16 running along the underside of the liquid tank 1, as well as struts running along the inside of the cover 22, which are located in Fig. 9 is not visible because it lies in front of the section plane. A truss structure can be formed in each of the liquid tanks 1 by means of the struts 16. In particular, the struts 16 are arranged in a vertical and / or horizontal direction, but it would also be possible to arrange the struts 16 at any angle. According to the in Fig. 9 In the illustrated embodiment, the struts 16 are arranged alternately on the first outer wall 3 and the first inner wall 6.

[0062] The liquid tank 1 arranged in the first row 11 contains two displacement bodies 23. Several displacement bodies 23 can be provided in a single liquid tank to achieve weight balancing in multiple liquid tank sections. In particular, it can be advantageous to provide several displacement bodies in a liquid tank 1 that has a large overall length. According to the present embodiment, the liquid tank 1 in the first row 11 extends over more than half the length of the vehicle.

[0063] In Fig. 9In the second row 12, a first liquid tank 1 is shown, which does not contain a displacement body 23. This first liquid tank 1 of the second row 12 has a smaller filling volume than the second liquid tank 1 of the second row 12. The first liquid tank 1 of the second row contains struts 16 that run along both the second inner wall 7 and the second outer wall 4. In addition, the first liquid tank 1 contains a plurality of connecting struts 56 that traverse the first liquid tank 1. They can run in a horizontal direction, but can also form an angle of inclination with respect to the horizontal direction.

[0064] The second liquid tank 1 of the second row 12 contains a larger filling volume than the first liquid tank 1 of the second row 12.

[0065] The second liquid tank 1 of the second row contains struts 16 that run inside the second liquid tank between the second inner wall 7 and the second outer wall 4. The second liquid tank 1 also contains a plurality of connecting struts 56 that traverse the second liquid tank 1, that is, extend from the second outer wall 4 to the second inner wall 7. These struts can run horizontally or be inclined at an angle to the horizontal. The second liquid tank 1 of the second row 12 also contains a displacement body 23. According to the present embodiment, the displacement body 23 is connected to the connecting struts 56 located on the left and right sides. According to the present embodiment, the displacement body 23 provides additional stiffening of the second liquid tank.

[0066] According to the present embodiment, the two adjacent first and second liquid tanks 1, which are arranged in the same row 12, contain a common partition 17. The partition 17 comprises a first wall element and a second wall element. A cavity containing a gaseous medium, in particular air, is arranged between the first wall element and the second wall element.

[0067] According to the present embodiment, at least one of the liquid tanks 1 of the first row 11 and the second row 12 contains a level sensor. The liquid level in all liquid tanks 1 of the first row 11 and the second row 12 can be displayed by means of the level sensor. The liquid tanks 1 are all interconnected via equalizing lines 25. Therefore, in principle, only a single level sensor is required. However, for safety reasons, preferably one level sensor is provided for each of the first and second rows 11, 12. Should one level sensor fail, the redundant reading from the second level sensor can still be used if necessary.

[0068] The liquid can be drawn from either the first end of the car (8) or the second end of the car (9). The liquid can also be supplied to the liquid tanks from either the first end of the car (8) or the second end of the car (9). The flow direction of the liquid is therefore... Fig. 8 and Fig. 9 shown in different directions. Both at the first end of the car 8 and at the second end of the car 9, corresponding connecting lines or connection elements 62 for the liquid can be provided.

[0069] It is obvious to a person skilled in the art that many further variations are possible in addition to the described embodiments without deviating from the inventive concept. The subject matter of the invention is therefore not limited by the preceding description and is defined by the scope of protection established by the claims. For the interpretation of the claims or the description, the broadest possible reading of the claims is decisive. In particular, the terms "contain" or "include" should be interpreted as referring to elements, components, or steps in a non-exclusive sense, thereby indicating that the elements, components, or steps may be present or used, or that they may be combined with other elements, components, or steps that are not explicitly mentioned.If the claims relate to an element or component from a group which may consist of A, B, C to N elements or components, this wording shall be interpreted as requiring only a single element of this group, and not a combination of A and N, B and N or any other combination of two or more elements or components of this group.

Claims

1. Tank vehicle (10, 20, 60) for a firefighting and rescue train comprising a plurality of liquid tanks (1) and an underbody (2) containing at least two rail undercarriages (13, 14), wherein the underbody (2) is configured to support the liquid tanks (1), wherein a first outer wall (3) and a second outer wall (4) of the tank vehicle (10) are formed by the liquid tanks (1), characterized in that the liquid tanks (1) are arranged one behind the other in a first row (11) and a second row (12), so that a passageway (5) for passengers is formed between the liquid tanks (1) of the first row (11) and the liquid tanks (1) of the second row (12).

2. Tank vehicle (10, 20, 60) according to claim 1, wherein the first outer wall (3) is formed by the liquid tanks (1) of the first row (11) and the second outer wall (4) is formed by the liquid tanks (1) of the second row (12).

3. Tank vehicle (10, 20, 60) according to one of the preceding claims, wherein a first inner wall (6) is formed by the liquid tanks (1) of the first row (11) and a second inner wall (7) is formed by the liquid tanks (1) of the second row (12).

4. Tank vehicle (10, 20, 60) according to claim 3, wherein at least one of the first and second inner walls or the first and second outer walls is configured as a double wall, wherein the double wall contains a plurality of wall elements, wherein a space filled with a gaseous medium is formed between the wall elements of the double wall.

5. Tank vehicle (10, 20, 60) according to one of the preceding claims, wherein at least one of the first or second rows (11, 12) contains at least two liquid tanks (1).

6. Tank vehicle (10, 20, 60) according to one of the preceding claims, wherein the passageway (5) extends from the underbody (2) to a vehicle roof (15).

7. Tank vehicle (10, 20, 60) according to one of the preceding claims, wherein each of the liquid tanks (1) contains struts (16) or connecting struts (56) for stiffening at least one of the corresponding first or second inner walls (6, 7) and the first and second outer walls (3, 4).

8. Tank vehicle (10, 20, 60) according to claim 7, wherein the struts (16) or connecting struts (56) form a truss structure in each of the liquid tanks (1).

9. Tank vehicle (10, 20, 60) according to one of claims 7 or 8, wherein the struts (16) or connecting struts (56) are arranged in a vertical direction and in a horizontal direction or form an angle of inclination with respect to the horizontal direction.

10. Tank vehicle (10, 20, 60) according to one of the preceding claims, wherein adjacent liquid tanks (1) arranged in the same row (11, 12) include a common partition wall (17).

11. Tank vehicle (10, 20, 60) according to claim 10, wherein the partition wall is configured as a double wall, wherein the double wall contains a plurality of wall elements, wherein a space filled with a gaseous medium is formed between the wall elements of the double wall.

12. Tank vehicle (10, 20, 60) according to one of the preceding claims, wherein at least one of the liquid tanks (1) contains a heating device (18).

13. Tank vehicle (10, 20, 60) according to claim 12, wherein the heating device (18) comprises at least one heating rod (19) which is arranged in a sump area (24) of the liquid tank (1).

14. Tank vehicle (10, 20, 60) according to one of the preceding claims, wherein at least one of the liquid tanks (1) contains a level measuring device.

15. Tank vehicle (10, 20, 60) according to one of the preceding claims, wherein a gas-filled displacement body (23) protruding into the interior of at least one of the liquid tanks (1) is provided.

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