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 firefighting and rescue train. Such tank vehicles are used, for example, as tunnel rescue vehicles for rail transport. In particular, the tank vehicle can be designed as a tank firefighting vehicle. State of the art

[0002] Document EP 3 795 444 A1 discloses a firefighting work train consisting of two railcars and a liquid tanker arranged between them. A connecting area between the railcar and the liquid tanker includes a passage for people. The liquid tanker includes a liquid tank in a lower area. A walk-in passenger compartment is arranged above the liquid tank, allowing people to move between the railcar(s) and the liquid tanker. Object of the invention

[0003] The object of the invention is to develop a tank vehicle for a fire-fighting and rescue train by means of which a larger quantity of liquid can be transported. The filling of the liquid tank with liquid should be possible in a simple manner. It is a further object of the invention to ensure that people can walk through the tank vehicle to get to the traction vehicle(s) or to other tank vehicles without having to leave the train composition. It is a further object of the invention to ensure that the liquid transported in the tank vehicle can be transported safely and that the inertial forces acting on the liquid tank during acceleration or braking maneuvers cannot cause damage to the liquid tank or the wagon floor or rail chassis. Description of the invention

[0004] The object of the invention is achieved 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, this term refers to exemplary embodiments and / or embodiments, which is not necessarily to be understood as a more preferred application of the teachings of the invention. Similarly, the terms "preferably" and "preferably" are to be understood as referring to one example from a set of exemplary embodiments and / or embodiments, which is not necessarily to be understood as a preferred application of the teachings of the invention. Accordingly, the terms "for example," "preferably," or "preferably" can refer to a plurality of exemplary embodiments and / or embodiments.

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

[0007] In the following, the term ‘rigidity of the tank vehicle’ means the resistance of the tank vehicle, in particular of the liquid tanks, to deformation caused by a load acting on the liquid tanks, in particular by inertial forces acting 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. A first outer wall and a second outer wall of the tank vehicle are formed by the liquid tanks. The liquid tanks are arranged one behind the other in a first row and a second row, so 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 enclosure for the liquid tanks can be dispensed with. In particular, the outer wall can be designed as a double wall. The outer wall can contain insulation to prevent a liquid in the liquid tank from cooling below freezing and preventing ice from forming.

[0010] According to one exemplary embodiment, a first inner wall is formed by the liquid tanks of the first row and a second inner wall is formed by the liquid tanks of the second row. The first and second inner walls, in particular, form the lateral boundaries of the walkable aisle. According to one exemplary embodiment, the first and second inner walls are essentially designed as flat inner walls. In particular, the inner wall can be designed as a double wall. The double wall contains a plurality of wall elements. An intermediate 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 aisle extends from the underbody to a car roof. The car roof can be formed at least partially by a cover for the liquid tanks. The car roof can rest on support elements that extend from the first inner wall to the second inner wall. The support elements can provide additional stiffening of the car body 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 walls and outer walls. The struts or connecting struts are in particular connected to at least one of the inner walls or outer walls, for example by means of welded joints. According to one embodiment, a truss structure can be formed in each of the liquid tanks by means of the struts or connecting struts. In particular, the struts or connecting struts can be arranged in the vertical direction and in the horizontal direction or can include an angle of inclination with respect to the horizontal direction. "Or" here refers to a logical "or" connection; 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 designed, in particular, as a double wall. The double wall contains a plurality of wall elements. An intermediate space filled with a gaseous medium can be formed between the wall elements of the double wall. The double wall contains, in particular, 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, there is an air gap 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 of the liquid tanks in a row is reinforced by the adjacent liquid tank(s) in the same row. If the partition walls contain a double wall, with a gaseous medium located between the first and second wall elements, this partition wall, designed as a double wall, can be particularly effective in preventing a liquid column, which arises in a liquid tank due to sudden changes in velocity, from being transferred from one liquid tank to the adjacent liquid tank.Due to the gaseous medium located in the space between the two wall elements of the double wall, an impact force resulting from a water column can 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. The heating device can be used to heat the liquid to prevent the liquid temperature from falling below freezing. This prevents ice formation even during extended periods of the tanker being parked outdoors during the cold season, thus preventing damage to the liquid tanks and ensuring the tanker remains operational at all times, even during the cold season. For example, the heating device can comprise at least one heating element located in a sump area of ​​the liquid tank.

[0017] In particular, at least one of the liquid tanks can contain a filler neck. All liquid tanks can be filled via a single filler neck. Alternatively, one filler neck can be provided per row. Alternatively, each of the liquid tanks can have its own filler neck. Thus, each of the liquid tanks 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 one another via at least one equalizing line. At least one of the liquid tanks contains a drain neck which is arranged in the sump area of ​​the liquid tank. If the sump area has a floor with an incline, the drain neck is preferably arranged at the lowest point of the sump area. A pipe which runs in the corridor leads to the or each of the drain necks.

[0018] Seating, such as a bench, can be provided in the aisle. The pipes are arranged, for example, beneath the seating. Alternatively, the pipes can also run beneath a floor in the aisle between the floor and the subfloor, or can be arranged beneath the subfloor. The pipes can also be connected to a pumping unit, which is arranged, for example, beneath the subfloor between the rail bogies. The pipes can extend to the first end of the carriage and to the second end of the carriage. In particular, the liquid can be transported to either of the first or second ends of the carriage as required.

[0019] According to one embodiment, at least one of the liquid tanks contains a level gauge for measuring the liquid level in the liquid tank. According to one embodiment, at least one of the liquid tanks in the first row and the second row contains a level gauge. The level gauge 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 in the interior of the liquid tank. The gas-filled displacement body can be used to adjust the liquid volume in the liquid tank. In particular, the liquid volume can be reduced if the weight of the liquid in the filled state exceeds the permissible weight of the payload. The volume of the displacement body can be adjusted depending on the desired reduction in the liquid volume. The displacement body is advantageously firmly connected to the cover of the liquid tank. When the liquid tank is filled, the displacement body can be used to ensure that the weight of the added liquid can never exceed the permissible total weight.The displacement body can be used to compensate 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 to one another via an equalizing line so that any air and liquid remaining in the liquid tanks can circulate between the individual liquid tanks. One or more equalizing lines can prevent a potentially undesirable overpressure from developing in one of the liquid tanks. In particular, one equalizing line can be located near the cover. In other words, one equalizing line can connect two liquid tanks in the upper area. Both liquid and air can circulate in such an equalizing line, particularly if the liquid tank is not completely filled or some of the liquid has already been removed from the liquid tank. One or more additional equalizing lines can be located in the sump area or in the lower area of ​​the liquid tank.

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

[0023] According to one example, the liquid tanks are assembled and / or connected to the underbody using riveted joints. Of course, it would be possible to use screwed, welded, or adhesive joints instead of riveted joints. However, the latter two methods currently generally require regular inspections. If the connections are difficult to access, inspection can only be carried out with considerable effort, which can increase the maintenance costs of the tanker vehicle.

[0024] In order to save material and weight, the high rigidity of the liquid tanks means that reinforcement of the underbody is not necessary, as provided for, for example, in EP 3 794 444 A1. In particular, an additional support element at the two ends of the vehicle can be dispensed with, since the liquid tanks of the first and second rows are connected to one another via support elements that also support the vehicle roof. Therefore, these support elements can be used to form a liquid tank module which, when assembled, has the necessary dimensional stability. This means that the liquid tank module already has sufficient rigidity, so that, surprisingly, reinforcement of the underbody can be dispensed with. The material required for the underbody can thus be reduced by up to 15%.

[0025] Such a rescue train may 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. The liquid can be an extinguishing liquid, such as extinguishing water. Extinguishing water can contain other additives, such as foam or wetting agents. The rescue train can accommodate 300 people in seats or standing positions. The rescue train can reach a maximum speed of 160 km / h. The drive 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. Fig. 1 a view of a tank vehicle according to a first embodiment, Fig. 2 a side view of the Fig. 1 tanker shown, Fig. 3 supervision of the Fig. 1 tanker shown, Fig. 4 a view of the tanker from the front, Fig. 5 a section through the tanker according to the Fig. 2 shown section plane AA, Fig. 6 a longitudinal section through the liquid tanks, Fig. 7 a second embodiment of a tank vehicle, Fig. 8 a section through the Fig. 7 shown tanker along the section plane BB in a view from above, Fig. 9 a section through a variant that in Fig. 7 illustrated tank vehicle according to a third embodiment along the section plane BB in a view from above. Detailed description of the drawings

[0027] Fig. 1shows a view of a tank vehicle 10 for rail transport according to a first exemplary 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 an underbody 2. The underbody 2 can be designed as a wagon frame that can be moved on rails by means of rail bogies 13, 14. The liquid tanks 1 extend in the longitudinal direction of the tank vehicle. The first and second outer walls 3, 4 of the tank vehicle 10 are formed by the liquid tanks. 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 in the longitudinal direction of 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. In . Fig. 1 only one such liquid tank 1 is shown 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, wherein the liquid tanks 1 form 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 aisle 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 to be filled with liquid. The liquid can in particular comprise an extinguishing liquid, such as extinguishing water, which can contain further additives, such as foam or wetting agents. The cavities each have a first and second inner wall 6, 7 opposite the first and second outer walls 3, 4. Between the first and second inner walls 6, 7 there is a free space, which is designed as the previously described passage 5, which in Fig. 4 or Fig. 5 The aisle 5 extends from a first end 8 of the tanker to a second end 9 of the tanker 10. The aisle 5 can be used by passengers as a resting place or transit area. Passengers can thus traverse the tanker 10 through this aisle 5.

[0030] According to the 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 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 structural design of the installed components and any resulting weight differences using a displacement body 23, which is described below. This ensures that the weight load on the underbody 2 is balanced and the occurrence of one-sided loading on the underbody 2 is effectively prevented.

[0032] Fig. 2 shows a side view of the Fig. 1illustrated tank vehicle, in which the second outer wall 4 of the tank vehicle 10 is visible. According to the present exemplary embodiment, the second outer wall 4 contains 14 sections. Adjoining the vehicle end 8 is a coupling region 28 which is surrounded by an elastic casing whose shape can adapt according to the deflection during cornering. Adjoining the coupling region 28 is a first section 26 which 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 row 12. The fifth, sixth and seventh sections 45, 46, 47 form a second liquid tank of the second row 12. The eighth, ninth and tenth sections 48, 49, 50 form a third liquid tank of the second row 12.The eleventh, twelfth, and thirteenth sections 51, 52, 53 form a fourth fluid tank of the second row 12. Adjoining the thirteenth section 53 is a fourteenth section 27, which in turn is designed to accommodate control elements. Adjoining the carriage end 9 is a coupling area 29, which is surrounded by an elastic casing whose shape can adapt to the deflection during cornering.

[0033] Fig. 3 shows a top view of the Fig. 1 illustrated tank vehicle 10, which shows both the first row 11 and the second row 12 of liquid tanks.

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

[0035] Fig. 4shows a view of the tanker 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 exemplary embodiment, the wagon roof 15 is at least partially formed by covers 22 of the liquid tanks 1. In the present illustration, the casing of the coupling area 28 surrounds the aisle 5. The coupling area 28 also contains the pipe connections 55 for the liquid, which is led from the liquid tanks 1 to the adjoining wagons. Furthermore, connection elements 62 for the power supply are located in the coupling area. Pipe connections 61 for a cooler can also be provided.

[0036] Fig. 5 shows a section through the tanker according to the Fig. 2Illustrated sectional plane AA, in which the fourth liquid tank of the first row 11 and the fourth liquid tank of the second row 12 are shown in section. Also visible in the sectional view is the displacement body 23, which is designed as a displacement body. The displacement body has a substantially cylindrical shape. The displacement body 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] A plurality of struts 16 are arranged in the interior of the liquid tank 1, which serve to stiffen the liquid tank. The struts extend vertically along the first and second inner walls 6, 7 in the interior of the liquid tank 1 and along the first and second outer walls 3, 4 in the interior of the liquid tank 1. A connecting strut 56 traversing the interior of the liquid tank 1 and extending horizontally is also shown.

[0038] In this illustration, the sump area 24 of each of the two liquid tanks 1 is also visible. The heating device 18 is located in the sump area 24. Two intersecting heating rods 19 of the heating device 18 are visible.

[0039] In Fig. 5Two pipes 58 are also visible, which lead to the first end 8 and the second end 9 of the carriage, respectively. According to this exemplary embodiment, the pipes 58 run beneath a seating arrangement, for example, a bench 59, so that they are easily accessible but do not pose a tripping hazard. Furthermore, according to the present exemplary embodiment, no additional installation space is required for the pipes 58.

[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. 6shows 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 framework structure in each of the liquid tanks 1. In particular, the struts 16 are arranged in the 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 contains a first wall element and a second wall element, with a gaseous medium, in particular air, 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 rod 19, which is arranged in a sump region 24 of the liquid tank 1. The heating device 18 can be used to heat the liquid to prevent the liquid temperature from falling below freezing. Even during extended periods of standstill of the tank vehicle 10 outdoors during the cold season, ice formation can thus be prevented, so that, on the one hand, damage to the liquid tanks 1 can be avoided and, on the other hand, the tank vehicle 10 remains ready for use at all times, even during 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 ventilated 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 gauge. The level gauge can be used to display the liquid level in all liquid tanks 1 of the first row 11 and the second row 12. The liquid tanks 1 are all connected to one another via compensating lines 25. In principle, therefore, only a single level gauge is required. For safety reasons, however, one level gauge is preferably provided for each of the first and second rows 11, 12. Should a level gauge fail, the essentially redundant measured value of the second level gauge can still be used if necessary.

[0046] A gas-filled displacement body 23 can be provided in the interior of 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 in the filled state exceeds the permissible weight of the payload for the tank vehicle 10. The volume of the displacement body 23 can be adjusted depending on the desired reduction in the 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 firmly connected to the cover 22 of the liquid tank 1.When filling the liquid tank 1, the displacement body 23 can be used to ensure that the weight of the added liquid can never exceed the permissible total weight. The displacement body 23 can be used to compensate 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 one another via a compensating line 25, so that air and water remaining in the liquid tanks can circulate between the individual liquid tanks 1. One compensating line 25 can be provided in the upper region of the liquid tanks 1, as shown; 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 one another via compensating lines 25, and the first row 11 can be connected to the second row 12 via compensating lines 25. Thus, all liquid tanks 1 are in communication with one another.

[0048] Fig. 7shows a view of a tank vehicle 20 for rail transport according to a second exemplary embodiment. For identical or equivalent components, the same reference numerals as for the previous first exemplary embodiment are used below. The tank vehicle 20 can be part of a rescue train. The tank vehicle 20 comprises a plurality of liquid tanks 1 mounted on an underbody 2. The underbody 2 can be designed as a wagon frame that can be moved on rails by means of rail bogies 13, 14. The liquid tanks 1 extend in the longitudinal direction of the tank vehicle. The first and second outer walls 3, 4 of the tank vehicle are formed by the liquid tanks. 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 in the longitudinal direction of 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 part 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, wherein a first outer wall 3 and a second outer wall 4 of the tank vehicle 10 are formed by the liquid tanks 1. The liquid tanks 1 are arranged one behind the other in a first row 11 and a second row 12, so that a walkable aisle 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 section through the Fig. 7 The tank vehicle shown is shown along 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 to be filled with liquid, in particular extinguishing liquid, such as extinguishing water, which may contain further additives such as foam or wetting agents. The cavities each have a first and second inner wall 6, 7 opposite the first and second outer walls 3, 4, respectively. Between the first and second inner walls 6, 7 there is a free space designed as an aisle 5. The aisle 5 extends from a first end 8 of the vehicle to a second end 9 of the tank vehicle 20. The aisle 5 can be used by passengers as a rest area or passageway. Passengers can thus traverse the tank vehicle 20 through this aisle 5.

[0052] According to the 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 designed for essentially the same capacity. This ensures that the weight load on the underbody 2 is balanced and the occurrence of one-sided loading on the underbody 2 is effectively prevented.

[0054] A gas-filled displacement body 23 can be provided in the interior of 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 in the filled state exceeds the permissible weight of the payload for the tank vehicle 20. The volume of the displacement body 23 can be adjusted depending on the desired reduction in the 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 firmly connected to the cover 22 of the liquid tank 1.When filling the liquid tank 1, the displacement body 23 can be used to ensure that the weight of the added liquid can never exceed the permissible total weight. The displacement body 23 can be used to compensate 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] A plurality of connecting struts 56 are arranged in the interior of the liquid tanks 1, which serve to stiffen the liquid tanks. According to this exemplary embodiment, the connecting struts 56 extend horizontally 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 exemplary embodiment, the connecting struts 56 extend horizontally 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] Also according to the present embodiment, each of the liquid tanks 1 can contain a heating device 18, which can be arranged analogously to the Fig. 5 or Fig. 6illustrated heating devices. The heating device 18 can, analogously to the previous exemplary embodiment, comprise at least one heating rod 19, which is arranged in a sump region 24 of the liquid tank 1. The heating rod 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 the underside of the liquid tank 1. According to the present exemplary embodiment, at least one of the liquid tanks 1 of the first row and the second row contains a level measuring device. By means of the level measuring device, the liquid level in all liquid tanks 1 of the first row 11 and the second row 12 can be displayed. The liquid tanks 1 are all connected to one another via compensating lines 25. In principle, therefore, only a single level measuring device is required.For safety reasons, however, it is preferable to provide one level gauge for each of the first and second rows 11, 12. Should one level gauge fail, the otherwise redundant measured value from the second level gauge can be used if necessary.

[0058] Fig. 9 shows a view of a third embodiment of a tank vehicle 60. Fig. 9 also shows a section through a tank fire engine analogous to the illustration according to Fig. 7along the sectional plane BB in a view from above. 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 which are designed to be filled with liquid, for example extinguishing water. The cavities each have a first and second inner wall 6, 7 opposite the first and second outer wall 3, 4. Between the first and second inner walls 6, 7 there is a free space which is designed as an aisle 5. The aisle 5 extends from a first end 8 of the vehicle to a second end 9 of the tank vehicle 60. The aisle 5 can be used by passengers as a resting place or passageway. Passengers can thus cross the tank vehicle 60 through this aisle 5.

[0059] According to the 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, each with a different filling volume. The first outer wall 3 is formed by the liquid tank 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 tank 1 of the first row 11, and a second inner wall 7 is formed by the liquid tanks 1 of the second row 12.

[0060] In this sectional view it can be seen 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. Fig. 9shows various variants for the arrangement of the struts 16. In the liquid tank located in the first row 11, there are struts 16 running along the outer wall 3 and the inner wall 6. In addition, connecting struts 56 are shown, which traverse the liquid tank. 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 in Fig. 9 is not visible because it lies in front of the cutting 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 Fig. 9 In the embodiment shown, the struts 16 are arranged alternately on the first outer wall 3 and the first inner wall 6.

[0061] The liquid tank 1 arranged in the first row 11 contains two displacement bodies 23. Multiple displacement bodies 23 can be provided in a single liquid tank to achieve weight compensation in multiple liquid tank sections. In particular, it can be advantageous to provide multiple 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 carriage.

[0062] 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 contains 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 include an angle of inclination with respect to the horizontal direction.

[0063] 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.

[0064] The second liquid tank 1 of the second row contains struts 16 that run in the interior of the second liquid tank between the second inner wall 7 and the second outer wall 4. Furthermore, the second liquid tank 1 contains a plurality of connecting struts 56 that traverse the second liquid tank 1, i.e., extend from the second outer wall 4 to the second inner wall 7. They can run horizontally, but can also include an angle of inclination with respect to the horizontal direction. 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 can provide additional stiffening of the second liquid tank.

[0065] 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 wall 17. The partition wall 17 contains 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.

[0066] 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 gauge. The level gauge can be used to display the liquid level in all liquid tanks 1 of the first row 11 and the second row 12. The liquid tanks 1 are all connected to one another via compensating lines 25. In principle, therefore, only a single level gauge is required. For safety reasons, however, one level gauge is preferably provided for each of the first and second rows 11, 12. Should a level gauge fail, the essentially redundant measured value of the second level gauge can still be used if necessary.

[0067] The liquid can be removed from both the first carriage end 8 and the second carriage end 9. The liquid can also be supplied to the liquid tanks from the first carriage end 8 or the second carriage end 9. The flow direction of the liquid is therefore in Fig. 8 and Fig. 9 shown in different directions. Appropriate connecting lines or connecting elements 62 for the fluid can be provided at both the first carriage end 8 and the second carriage end 9.

[0068] It will be obvious to a person skilled in the art that many further variations are possible in addition to the described embodiments without departing from the inventive concept. The subject matter of the invention is therefore not limited by the foregoing description and is determined by the scope of protection defined by the claims. The broadest possible reading of the claims is decisive for the interpretation of the claims or the description. In particular, the terms "contain" or "comprise" should be interpreted to refer 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 not explicitly mentioned.Where the claims refer to an element or component from a group which may consist of A, B, C to N elements or components, that language should be interpreted to require only a single element of that group, and not a combination of A and N, B and N, or any other combination of two or more elements or components of that group.

Claims

1. Tank vehicle (10, 20, 60) for a fire-fighting and rescue train comprising a plurality of liquid tanks (1) and an underbody (2) containing at least two rail bogies (13, 14), wherein the underbody (2) is designed 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 walkable aisle (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 designed as a double wall, wherein the double wall contains a plurality of wall elements, wherein an intermediate 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 aisle (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) includes 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 a framework structure is formed in each of the liquid tanks (1) by the struts (16) or connecting struts (56).

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 the vertical direction and in the horizontal direction or include 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) contain a common partition wall (17).

11. Tank vehicle (10, 20, 60) according to claim 10, wherein the intermediate wall is designed as a double wall, wherein the double wall contains a plurality of wall elements, wherein an intermediate 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 region (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) projecting into the interior of at least one of the liquid tanks (1) is provided.

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