Emergency vehicle designed as a truck

0001The invention relates to an emergency vehicle designed as a truck, in particular a fire engine.

0002The <patcit id="pcit0001" dnum="DE102010032072A1"><text>DE 10 2010 032 072 A1</text></patcit> describes a floor support structure of a motor vehicle designed as a passenger car. The floor support structure comprises a center tunnel located in the middle of the vehicle and extending in the longitudinal direction of the vehicle, which consists of a closed hollow profile and serves as a container for the protected accommodation of traction batteries. A tunnel side member, a floor panel and a sill on the outside are arranged on both sides of the central tunnel. In the plane of the floor support structure and in the longitudinal direction of the central tunnel, flanges are formed on the hollow profile on the side of the longitudinal beam. The center tunnel can be connected to the tunnel longitudinal girders by means of the flanges by inserting it from the underside of the motor vehicle into the area between the tunnel side members. The load-bearing floor structure is formed by the tunnel side members, the floor panels and the outside rockers. The center tunnel, which is designed as a hollow profile, is only used for the protected accommodation of traction batteries and can be connected on both sides in the direction of its longitudinal extension to the load-bearing longitudinal members and is thus held on them. To change the traction batteries, the center tunnel together with the traction batteries housed in it can be removed and removed.

0003It also describes that <patcit id="pcit0002" dnum="FR2960506A1"><text>FR 2 960 506 A1</text></patcit> a vehicle designed as a passenger car. The vehicle comprises a load-bearing frame made up of a carrier which is arranged centrally between the pairs of wheels and to which a front module, a floor module and a rear module are attached. The roof structure together with the windows all around is placed on this load-bearing frame on the floor.

0004From the <patcit id="pcit0003" dnum="DE102010020313A1"><text>DE 10 2010 020 313 A1</text></patcit> a support structure of a vehicle body for a passenger car has become known. The support structure comprises at least one center tunnel and a rear wall unit which is connected to at least the center tunnel while forming at least one first load path. The rear wall unit has a support unit which is connected to the central tunnel of the supporting structure to form a second load path. The rear wall unit is additionally connected to at least one seat cross member and / or a B-pillar and / or a roof structure unit of the supporting structure. The additional support unit between the rear wall unit and the center tunnel creates the second load path to increase the rigidity of the supporting structure, via which an improved introduction of occurring loads into the supporting structure and a more even distribution of these loads in the supporting structure can take place. Any loads that occur can therefore be introduced into both load paths of the supporting structure. Particularly when the central tunnel is subjected to torsion stress, the stresses that arise are transferred from the central tunnel via the support unit to the rear wall unit. This results in a reduction in torsional loads in the center tunnel. Via the support unit, loads occurring can be reduced in a structurally simple and cost-effective manner in a defined manner and / or passed on to the rear wall unit in order to improve the rigidity of the vehicle body. The additional support unit increases the rigidity of the body structure between the passenger compartment and the rear end, so that the vehicle occupants are better protected in the event of a rear-end collision.

0005It also describes that <patcit id="pcit0004" dnum="EP3012175A1"><text>EP 3 012 175 A1</text></patcit> only the training of a vehicle as a passenger car in a monocoque construction. An upper body is attached to a lower body molded from a thermoplastic material. The upper body is made of a transparent, thermoplastic plastic. The lower body is plate-shaped and comprises a laterally circumferential flange section protruding from the plate as well as a stiffening rib arranged in the middle. The lower plate-shaped body carries the upper body arranged thereon and fastened to it, which upper body can be formed from several upper body parts.

0006From the <patcit id="pcit0005" dnum="US3279816A"><text>U.S. 3,279,816 A</text></patcit> a load-bearing floor chassis of a motor vehicle has become known. The floor chassis comprises a plate-shaped structure with brackets arranged at the front and flange plates arranged at the rear. In the direction of the longitudinal extension of the plate-shaped structure, a central tension-carrying element is arranged in the form of a tunnel in the middle of the vehicle. The tunnel-shaped element is firmly connected to the brackets arranged at the front and the flange plates arranged at the rear.

0007It also describes that <patcit id="pcit0006" dnum="US2488978A"><text>U.S. 2,488,978 A</text></patcit> a frame for a passenger car designed as a convertible. A centrally arranged carrier with a U-shaped cross section is attached to a base plate. Side walls, a rear wall unit and a front unit are attached to it circumferentially around the base plate.

0008The <patcit id="pcit0007" dnum="EP1488986A1"><text>EP 1 488 986 A1</text></patcit> describes a motor vehicle designed as a passenger car with a connection arrangement in the roof area. The connection arrangement is provided between a reinforcement frame for a special roof and the motor vehicle body, which can be used in both 2-door and 4-door passenger cars.

0009From the <patcit id="pcit0008" dnum="DE102012106451A1"><text>DE 10 2012 106 451 A1</text></patcit> a roof structure for a driver's cab of a commercial vehicle has become known. The same parts are used for different roof modules in that roll profiles for roof longitudinal and roof cross members are designed with different lengths and, if necessary, with different flanges. The roof structure can thus essentially be reduced to three different types of profile, namely a longitudinal member profile, a cross member profile and a column profile.

0010The <patcit id="pcit0009" dnum="WO0194141A1"><text>WO 01/94141 A1</text></patcit> describes a modular roof of a motor vehicle designed as a passenger car. The roof structure of the bodyshell comprises a front and a rear cross member and a right and a left side member, the module roof having at least two roof module elements which are fastened directly to the roof structure. The roof module elements preferably extend over the entire width of the roof structure and are in particular releasably attached to the opposite side rails.

0011In vehicle construction for trucks, the term box van was understood to mean that structure in which the body of the box-shaped structure formed a structural unit with the driver's cab or driver's cab. The entire box-shaped structure was built on an intermediate frame, the intermediate frame of the box-shaped structure being mounted on and supported by a vehicle support frame. Lately the box-shaped design has been replaced by a so-called box body in trucks. The driver's cab or driver's cab was then mounted tiltable on the vehicle support frame. As a result, it was not possible to create a continuous, fixed connection with the box, since the driver's cab and the fixed box could not be tilted. The vehicle frame comprises a central central frame or longitudinal frame on which the respective pairs of wheels, the drive components, the fuel tank and other components are held. On the middle frame or longitudinal frame of the vehicle frame, either the entire box-shaped structure or the driver's cab or driver's cab and its own box body were supported as a self-supporting structure with an additional support frame interposed. A disadvantage of these vehicle bodies is that a separate load-bearing box-shaped body or the driver's cab and the self-supporting box body were provided on the vehicle frame.

0012Furthermore, a type of frame construction is also known in vehicles in which the vehicle frame is formed by a so-called central tubular frame. The central tubular frame is designed as a load-bearing, central structural element that accommodates the other vehicle elements, which are usually not subject to structural loads. The central tube frame thus forms the load-bearing structure under a non-load-bearing body.

0013The object of the present invention was to overcome the disadvantages of the prior art and to provide an emergency vehicle in which the vehicle body forms an associated structural unit and this has a compact overall structure. Furthermore, a weight-saving structural unit should also be designed.

0014This object is achieved by an emergency vehicle according to the claims.

0015The emergency vehicle according to the invention is designed as a truck and is used in particular as a fire engine for fire fighting or for the recovery and / or rescue of people and objects. The emergency vehicle has a front side and a rear side spaced from it in the longitudinal direction of the vehicle and comprises:<ul id="ul0001" list-style="dash" compact="compact"><li>a vehicle body with a floor assembly, a roof assembly and with a left longitudinal wall and a right longitudinal wall, wherein the longitudinal walls are arranged between the floor assembly and the roof assembly,</li><li>a central longitudinal member, which longitudinal member is arranged extending in the vehicle longitudinal direction, wherein</li><li>the floor assembly comprises a floor structure and the floor structure is firmly connected directly to the central longitudinal beam, and wherein</li><li>the central longitudinal member forms an integral part of the floor assembly of the vehicle body,</li><li>at least one pair of front wheels and at least one pair of rear wheels, the at least two pairs of wheels being held on the central longitudinal member;</li><li>a drive unit, which drive unit is in drive connection with at least one of the wheel pairs, and that</li><li>the floor assembly has a lower chord, in particular a tension chord, which forms the vehicle body,</li><li>the roof assembly has an upper belt, in particular a compression belt, which forms the vehicle body,</li><li>the vehicle body comprises several transverse walls,</li><li>at least some of the transverse walls are firmly connected directly to the central longitudinal member of the floor assembly,</li><li>at least some of the transverse walls are firmly connected to at least one of the longitudinal walls of the vehicle body,</li><li>the vehicle body comprises a driver's cab, which driver's cab forms an integral structural unit of the vehicle body,</li><li>the central longitudinal member is directly connected to the vehicle body, and that</li><li>the vehicle body, together with the longitudinal member integrated in it, forms a structural, consistently cohesive structure from the front to the rear.</li></ul>

0016The advantage achieved in this way is that by integrating the central longitudinal member with the vehicle body, namely the vehicle body, a compact self-supporting overall structure can be created and additional intermediate frames in the formation of the vehicle body can be dispensed with. Since the central longitudinal member is arranged on the floor side, it represents the self-supporting overall structure through its integration into the floor assembly together with this in cooperation with the other body parts. Furthermore, weight can be saved and on the one hand through the integration of the central longitudinal member and the elimination of otherwise required intermediate frames on the other hand, an additional receiving space can be created within the vehicle body. In this way, despite the intermediate frame that is no longer required, a stable overall support structure can be formed.

0017The floor assembly forms a lower chord, in particular a tension chord, of the vehicle body. By integrating the central longitudinal member in the floor assembly, a load-bearing, sufficiently massive base can be created for the vehicle designed as a truck.

0018Furthermore, the floor assembly comprises a floor structure, the floor structure being firmly connected directly to the central longitudinal member. By providing the floor structure, a self-contained structural unit can thus be created in the floor area of ​​the vehicle body, which additionally forms sufficient rigidity and strength right up to the longitudinal or side walls.

0019The vehicle body also includes several transverse walls. By providing several transverse walls within the vehicle body, additional stiffening of the entire vehicle body can be achieved. Furthermore, it can also be used to achieve sufficient spacing of the roof assembly from the floor assembly, depending on the selected structural height of the transverse walls. Furthermore, the transverse walls can also serve to subdivide the receiving space located within the vehicle body into individual compartments.

0020Furthermore, at least some of the transverse walls are firmly connected directly to the central longitudinal member of the floor assembly. A sufficiently stable and solid vehicle body can thus be created.

0021Furthermore, some of the transverse walls are firmly connected to at least one of the longitudinal walls of the vehicle body. By providing at least one of the longitudinal walls and their connection to the transverse wall or walls, an even more stable overall structure of the vehicle body can be achieved.

0022The roof assembly forms an upper belt, in particular a compression belt, of the vehicle body. By including the entire roof assembly in the design or structure of the vehicle body, it can also serve as a load-bearing structural unit. In this way, together with the base assembly and the separation of the two assemblies by the transverse walls and longitudinal walls from one another, a self-supporting overall structure can be created depending on the requirements.

0023The vehicle body also includes a driver's cab, the driver's cab forming an integral structural unit of the vehicle body. The driver's cab is delimited by a subsection of the floor assembly, a subsection of the roof assembly, subsections of the longitudinal walls and, depending on the size and capacity, by at least two transverse walls. In this way, a continuous, associated structural unit of the emergency vehicle can be created. As a result of the integration of the entire driver's cab into the vehicle body of the vehicle, an even better self-supporting structure that belongs together can be created.

0024Furthermore, it can be advantageous if the longitudinal member is designed as a hollow profile body with a polygonal cross section. By designing the longitudinal member as a hollow profile body, a high inherent rigidity of the same can be achieved. In addition, a receiving space, for example for drive components, fuel, extinguishing agent, extinguishing water or the like, can thus also be created within the longitudinal member. A rectangular cross-section is preferably chosen, which is integrated in the floor assembly in a constructive manner and can also have the most varied of fastening options.

0025A further embodiment provides that a receiving channel is arranged or formed in the floor structure, which receiving channel extends in the longitudinal direction of the vehicle and that the central longitudinal member is received in at least some regions in the receiving channel. By providing or forming a receiving channel in the floor structure, an even better, space-saving reception of the central longitudinal member within the floor assembly can be achieved.

0026Another embodiment is characterized in that the receiving channel is arranged recessed in the floor structure starting from a bottom underside of the floor structure in the direction of the roof assembly and / or that the receiving channel is arranged recessed in the floor structure on the side facing away from the roof assembly. By forming the receiving channel on the floor structure, additional stiffening of the same can be achieved in cooperation with the central longitudinal member.

0027Furthermore, it can be advantageous if one of the transverse walls forms the front side of the vehicle body and has a holding frame and at least one viewing pane held in the holding frame. By integrating the transverse walls as load-bearing components of the vehicle body, the front of the vehicle can also be designed as a load-bearing component. With sufficient, stable fastening of the window to the holding frame, the foremost transverse wall can also exercise a supporting function in the formation of the vehicle body.

0028Another alternative embodiment is characterized in that at least some of the transverse walls are arranged in a transverse plane oriented in the vertical direction with respect to the longitudinal direction of the vehicle. This allows twisting of the vehicle body during driving to be minimized, which is transmitted from the floor assembly to the entire vehicle body.

0029Another preferred embodiment is characterized in that the roof assembly has at least one roof rack and at least one roof element connected to the at least one roof rack. A stable and load-bearing structure of the roof assembly can thus be created.

0030Furthermore, it can be advantageous if the roof assembly comprises a left roof rack, a right roof rack and at least one further roof rack, which is arranged at least one further roof rack in the vertical direction with respect to the longitudinal direction of the vehicle between the left roof rack and the right roof rack and the at least one further roof rack is also connected to the roof element. By providing several roof racks, not only can the roof area of ​​the vehicle be stiffened, but also at least one receiving space for items of equipment to be taken along or carried along.

0031Another embodiment is characterized in that two additional roof racks are provided, and the two additional roof racks are arranged at a distance from one another in the vertical direction with respect to the longitudinal direction of the vehicle. The inherent rigidity of the entire roof assembly can thus be further improved.

0032Another possible embodiment has the features that at least some of the roof girders are firmly connected to at least one of the transverse walls. The entire load-bearing capacity of the vehicle body can thus be improved and increased.

0033Another embodiment provides that the vehicle body further comprises an outer paneling arranged at least in sections. By providing an additional outer cladding, an external closure of the vehicle body can be created as required.

0034Finally, another preferred embodiment is characterized in that the vehicle body together with the longitudinal member forms a self-supporting structure. In this way, a construction concept can be created that offers the possibility of reacting more quickly to individual customer requests and being able to respond better to them.

0035For a better understanding of the invention, it is explained in more detail with reference to the following figures.

0036They each show in a greatly simplified, schematic representation:<dl id="dl0001"><dt>Fig. 1</dt><dd>a truck designed as an emergency vehicle, in side view;</dd><dt>Fig. 2</dt><dd>a simplified structure of an emergency vehicle, in side view;</dd><dt>Fig. 3</dt><dd>another simplified structural design of an emergency vehicle, in side view;</dd><dt>Fig. 4</dt><dd>another possible structure of an emergency vehicle, in side view and simplified representation;</dd><dt>Fig. 5</dt><dd>another simplified structural design of an emergency vehicle, in side view;</dd><dt>Fig. 6</dt><dd>a cross section through a possible structural design of an emergency vehicle, in a simplified representation;</dd><dt>Fig. 7</dt><dd>a cross section of another possible structural design of an emergency vehicle, in a simplified representation;</dd><dt>Fig. 8</dt><dd>a cross section of a further possible structural design of an emergency vehicle, in a simplified representation;</dd><dt>Fig. 9</dt><dd>the possible structure of the emergency vehicle <figref idref="f0003">Fig. 5</figref>, in cross section and simplified representation.</dd></dl>

0037By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference symbols or the same component designations, whereby the disclosures contained in the entire description can be transferred accordingly to the same parts with the same reference symbols or the same component names. The position details chosen in the description, such as top, bottom, side, etc. based on the figure immediately described and shown and these position details are to be transferred accordingly to the new position in the event of a change in position.

0038The term “in particular” is understood in the following to mean that it can be a possible more specific design or more detailed specification of an object or a method step, but does not necessarily have to represent a mandatory, preferred embodiment of the same or a mandatory procedure.

0039In the <figref idref="f0001">Fig. 1</figref> an emergency vehicle 1 is shown in a simplified side view. The emergency vehicle 1 can be used for a wide variety of purposes, in particular as a fire engine, municipal vehicle or also as a transport vehicle. Furthermore, the emergency vehicle 1 in the present exemplary embodiment is designed as a so-called truck and comprises a vehicle body 2, at least one pair of front wheels 3 and at least one pair of rear wheels 4. It would also be possible to use twin wheels instead of single wheels.

0040In the embodiment shown here, one possible form of an emergency vehicle is shown as a fire engine. The most varied of storage compartments and / or storage boxes can be provided in the vehicle body 2 in order to be able to carry along in an orderly manner the items of equipment, tools and much more necessary for use. For this purpose, the storage compartments and / or storage boxes can be closed by means of doors, shutters or other locking elements for transport and made accessible if necessary.

0041A drive unit or other units or component components are not shown for the sake of clarity.

0042The emergency vehicle 1 has a front side 5 and a rear side 6 spaced therefrom in the longitudinal direction of the vehicle, whereby an overall length or vehicle length is defined. It is also shown here that the emergency vehicle 1 is set up or supported on a preferably horizontally aligned contact surface 7.

0043The basic structure of the emergency vehicle 1 is formed by the vehicle body 2 and a central longitudinal member 8. Any structure is understood here which is designed, among other things, to carry the individual pairs of wheels, the drive elements and many other components. This overall structure can also be referred to as the vehicle body.

0044The central longitudinal member 8 forms, together with the vehicle body 2, a self-supporting structure. The vehicle body 2 in turn comprises a floor assembly 9, a roof assembly 10 and a left longitudinal wall 11 and / or a right longitudinal wall 12. The viewing direction is selected in the direction of the normal, usual direction of travel. In this exemplary embodiment, both a left longitudinal wall 11 and a right longitudinal wall 12 are shown and described, it being possible to provide only one of the two longitudinal walls 11, 12. Each of the two longitudinal walls 11, 12 is arranged between the floor assembly 9 and the roof assembly 10. The central longitudinal member 8, viewed in the direction of travel, is preferably arranged centrally with respect to the emergency vehicle 1, in particular from its pairs of wheels 3, 4, and extending in the longitudinal direction of the vehicle. The at least two pairs of wheels 3, 4 are preferably held on the central longitudinal member 8, their attachment and drive not being shown in detail for reasons of clarity. A drive unit (not shown and designated) is in drive connection with at least one of the wheel pairs 3, 4.

0045The central longitudinal support 8 can also be referred to as a core tube and is designed as a hollow profile body which preferably has a polygonal cross section. Depending on the load on the side member 8, aluminum, a wide variety of AL alloys and / or steel with a wide variety of additives and alloys formed therefrom can be selected as the material. However, it would also be possible to use composite materials, laminates, composite materials or the like. Thus, the longitudinal beam 8 can be assembled from profiles and / or folded sheets to form a single component that belongs together. All of the materials described above, or also possible combinations of materials, can be used not only in the formation of the longitudinal member 8, but also in the formation of the vehicle body 2, in particular the component components described below. This can e.g. the floor assembly 9, the roof assembly 10, the side walls or the longitudinal walls 11, 12, a floor structure 13, an outer cladding 17 and transverse walls 14. When choosing composite materials, depending on the manufacturing process, they can be combined to form a common structural unit comprising at least one longitudinal wall 11, 12, the transverse walls 14, the roof assembly 10 and, if applicable, the floor assembly 9.

0046Furthermore, the central longitudinal member 8 is firmly connected directly to the vehicle body 2, in particular screwed, riveted and / or partially materially connected. The central longitudinal member 8 also forms an integral part of the floor assembly 9 of the vehicle body 2. This means that the vehicle body 2 is not built up on a load-bearing intermediate frame, as is usual, and the load-bearing intermediate frame is supported on the central longitudinal member 8, but rather the intermediate frame is completely dispensed with. The central longitudinal member 8, together with the floor assembly 9, thus forms a lower chord, in particular a tension chord, of the vehicle body 2.

0047In the following <figref idref="f0002 f0003 f0004">Figures 2 to 9</figref> possible, different arrangements of individual component components of the self-supporting structure for forming the emergency vehicle 1 and different configurations of the same are shown. The basic structure of the self-supporting structure is in the<figref idref="f0002 f0003 f0004">Figures 3 to 9</figref> only shown in a strongly stylized way.

0048So is in the <figref idref="f0002">Fig. 2</figref> the self-supporting structure for forming the emergency vehicle 1 with the vehicle body 2 and the longitudinal member 8 is shown. In addition to the longitudinal member 8, the floor assembly 9 of the vehicle body 2 can also comprise a floor structure 13 which, starting from the longitudinal member 8, extends in each case to the two longitudinal walls 11, 12. In the lower corner area or longitudinal edge area, the floor structure 13 can be firmly connected to the longitudinal walls 11, 12. To form the stable, self-supporting structure, the floor structure 13 is firmly connected directly to the central longitudinal beam 8.

0049The vehicle body 2 comprises at least one transverse wall 14, but mostly several transverse walls 14, which are designed as load-bearing transverse ribs. Each of the transverse walls 14 is aligned in the transverse direction, in particular in the vertical direction, with respect to the longitudinal extent or the vehicle longitudinal direction of the vehicle body 2. Depending on the design and arrangement, the transverse walls 14 are also connected to at least one of the longitudinal walls 11, 12 to form a load-bearing structural unit. If both longitudinal walls 11, 12 are provided, the transverse walls 14 are preferably also firmly connected to both longitudinal walls 11, 12.

0050It is also shown here that the transverse wall 14 which forms the front side 5 of the vehicle body 2 also has a holding frame 15 and at least one viewing panel 16 held in the holding frame 15.

0051In order to also achieve sufficient inherent rigidity in the area of ​​the floor assembly 9, at least some of the transverse walls 14 are directly connected to the central longitudinal member 8 of the floor assembly 9. Furthermore, the transverse walls 14 can also be connected to the floor structure 13 in at least some areas.

0052The roof assembly 10 forms an upper belt, in particular a compression belt, of the vehicle body 2.

0053In addition, the vehicle body 2 can further comprise an outer cladding 17 arranged at least in sections. The outer cladding 17 can be provided or arranged in addition to at least one of the two longitudinal walls 11, 12 or, at least in sections, can itself form at least one of the two longitudinal walls 11, 12 and thus contribute to increasing the inherent rigidity. However, the two longitudinal walls 11, 12 preferably serve as load-bearing components or are designed as these. The outer cladding 17 can also be arranged to cover the entire vehicle body 2 on the outside. The outer cladding 17 also includes shutters, doors, sliding doors or other locking parts.

0054In the case of the currently common trucks, a separate driver's cab is provided, which can be tilted or folded on the vehicle frame or the chassis. In the vehicle body 2 shown in this exemplary embodiment, it is also provided that it also includes a driver's cab 18 as an integral structural unit. The driver's cab 18 is thus also a fixed and fixed component of the self-supporting structure of the emergency vehicle 1. The vehicle body 2, together with the longitudinal member 8 integrated therein, thus forms a structural, consistently cohesive structure from the front side 5 to the rear side 6.

0055The central longitudinal member 8 extends from the area below the driver's cab 18 to at least protruding beyond the rear wheel pair 4 continuously in the vehicle longitudinal direction.

0056The overall height and the vehicle width of the emergency vehicle 1 can be selected according to the respective legal regulations.

0057The arrangement of the individual transverse walls 14 can be freely selected as required and the required space as well as the individual application. Thus, not only the front side 5 of the driver's cab 18 can be formed by its own transverse wall 14, but also that transverse wall 14 which is used to form the rear side 6.

0058The one in the <figref idref="f0002">Fig. 2</figref> The embodiment shown, the rear region of the vehicle body 2 is designed to accommodate a loading arrangement, not shown in detail, with a loading platform that is preferably height-adjustable in the vertical direction. The supporting transverse wall 14 is thus arranged at a distance from the rear side 6 in the direction of the front end or the front side 5. A pair of front wheels 3 and only one pair of rear wheels 4 are held on the side member 8. The longitudinal extension of the longitudinal member 8 ends directly behind the rear wheel pair 4 in order to create a rear-side free space within the vehicle body 2.

0059In the <figref idref="f0002">Fig. 3</figref> Another possible embodiment of the emergency vehicle 1 with its vehicle body 2 and the integral longitudinal member 8 is shown. The basic self-supporting structure is also implemented again. Therefore, in order to avoid unnecessary repetition, refer to the detailed description in the preceding<figref idref="f0001">Fig. 1</figref> and <figref idref="f0002">2</figref> pointed out or referred to. The same reference numerals or component designations are again used for the same parts as in the preceding ones<figref idref="f0001">Fig. 1</figref> and <figref idref="f0002">2</figref> be used. If necessary, this design can form an independent embodiment.

0060The self-supporting structure for forming the emergency vehicle 1 here also includes the vehicle body 2 and the side member 8. The vehicle body 2 also includes the floor assembly 9 described above, the roof assembly 10, the two longitudinal walls 11, 12 and preferably several transverse walls 14. All of these components or component groups are firmly and / or rigidly connected to one another to form the self-supporting structure.

0061It can also be seen here that the emergency vehicle 1 compared to the one in FIG <figref idref="f0002">Fig. 2</figref> Emergency vehicle 1 shown has a longer or longer vehicle length for this purpose. Two rear wheel pairs 4 can be provided for this purpose.

0062The rear end of the vehicle body 2 is provided on the bottom side with a bevel sloping from the roof assembly 10 towards the floor assembly 9. This can be referred to as a sloping stern. The side member 8 extends directly to the beveled rear or the rear side 6. The driver's cab 18 is also an integral, one-piece component of the vehicle body 2.

0063That in the <figref idref="f0002">Fig. 4</figref> Emergency vehicle 1 shown has the same basic design with the self-supporting structure as that in FIG <figref idref="f0001 f0002">Figs. 1 to 3</figref> Emergency vehicles described 1.

0064The only difference to these designs is the longer vehicle length. Furthermore, two pairs of front wheels 3 and two pairs of rear wheels 4 are attached to the side member 8.

0065In the area of ​​the floor assembly 9 on the floor side, an end cross member 19 is provided which forms the load-bearing rear end of the vehicle body 2. The end cross member 19 can be firmly connected to the longitudinal member 8 and / or the floor structure 13 as well as to the two longitudinal walls 11, 12 to form the self-supporting structural unit or structure.

0066The <figref idref="f0003">Fig. 5</figref> shows a further possible and possibly independent embodiment of the emergency vehicle 1, again with the same reference numerals or component designations as in the preceding for the same parts <figref idref="f0001 f0002">Figs. 1 to 4</figref> be used. To avoid unnecessary repetition, please refer to the detailed description in the preceding section<figref idref="f0001 f0002">Figs. 1 to 4</figref> pointed out or referred to.

0067This emergency vehicle 1 can be used, for example, to set up a turntable ladder, a lifting platform or some other climbing aid. For this purpose, it is provided here that the vehicle body 2 in the area of ​​the front side 5 includes at least the driver's cab 18 and possibly also a crew room and / or a room for equipment.

0068In this section, the vehicle body 2 has an overall height that is adapted in accordance with the intended additional structure.

0069In contrast to those in the <figref idref="f0001 f0002">Figs. 1 to 4</figref> In the emergency vehicle 1 shown here, the driver's cab 18 is also set even lower than in the exemplary embodiments described above. In order to make this possible, the longitudinal member 8 ends at the rear wall of the driver’s cabin 18 that faces the rear side 6 and is preferably formed by a transverse wall 14.

0070The base assembly 9 and the roof assembly 10 are also provided here. The roof assembly 10, however, viewed in a side view, has a longitudinal course that is stepped from the front side 5 towards the rear side 6. A stepped design is understood to mean that the roof assembly 10 is arranged to run in its longitudinal extension in at least two mutually different planes. In this way, a mutually different distance between the floor assembly 9, which is mostly arranged running in one plane, and individual longitudinal sections of the roof assembly 10 can be realized. It would also be possible to provide more than two levels in the roof assembly 10.

0071A first longitudinal section of the roof assembly 10 in the area of ​​the driver's cab 18 and a possibly adjoining body area is arranged to run approximately parallel with respect to the floor assembly 9, in particular the longitudinal member 8. This longitudinal area or longitudinal section of the roof assembly 10 extends approximately from one third to half the total vehicle length and forms a first roof area 20. Subsequent to the first roof area 20 is a intermediate area 21 that slopes down in the direction of the floor assembly 9 is arranged or provided. For the remaining length of the vehicle, the transverse walls 14 are designed with a lower overall height than in the area of ​​the driver's cab 18 or the first roof area 20 of the roof assembly 10. the roof assembly 10 is arranged directly above the floor assembly 9 in the longitudinal section of a second roof region 22. The self-supporting structure or the self-supporting structure construction is also retained in this longitudinal section of the second roof region 22.

0072In the <figref idref="f0003">Fig. 6</figref> a possible cross-section through the self-supporting structure of the emergency vehicle 1 is shown, again with the same reference numerals or component designations for the same parts as in the preceding <figref idref="f0001 f0002 f0003">Figs. 1 to 5</figref> be used. In order to avoid unnecessary repetition, a detailed description is given in the preceding<figref idref="f0001 f0002 f0003">Figs. 1 to 5</figref> pointed out or referred to.

0073Furthermore, the wheel pairs 3, 4 are not shown and only the basic, self-supporting structure or the self-supporting structure is shown better and more clearly.

0074The floor assembly 9 shown here comprises the floor structure 13 and the central longitudinal member 8 directly connected to it. A receiving channel 23 is arranged or formed in the floor structure 13, the receiving channel 23 extending in the longitudinal direction of the vehicle. It is also provided here that the central longitudinal member 8 is accommodated in the receiving channel 23 at least in some areas. It can also be seen that the receiving channel 23, starting from a floor underside 24 of the floor structure 13 in the direction of the roof assembly 10, is arranged recessed in the floor structure 13.

0075In the present exemplary embodiment, the transverse wall 14 shown here extends up to the outer paneling 17 arranged on the outside of the vehicle body 2.

0076The previously described left longitudinal wall 11 and the right longitudinal wall 12 have a C-shaped or U-shaped cross-section when viewed in cross section. The two longitudinal walls 11, 12 are arranged offset from the outer lateral boundary of the vehicle body 2, in the present exemplary embodiment from the outer panels 17, in the direction of a central longitudinal plane 25 running in the center of the longitudinal member 8. Furthermore, the two longitudinal walls 11, 12 are arranged in the vicinity of the roof assembly 10 below this. Here, too, a fixed connection between the two longitudinal walls 11, 12 and the transverse wall or walls 14 is provided.

0077The roof assembly 10 can be formed, for example, by a so-called sandwich carrier or a sandwich panel, which forms the entire roof area of ​​the vehicle body 2. The fixed connection between the transverse walls 14, the floor assembly 9, the roof assembly 10 and the two longitudinal walls 11, 12 can take place in an analogous manner, as has already been described above. What is essential is the information provided at the respective contact points or Joints fixed and / or rigid connection between the respective components in order to be able to form the self-supporting structure. Depending on the choice of material, the mutual connection between the components of the vehicle body 2 and / or the side member 8 to be connected to one another can also take place by means of a lamination process.

0078The one in the <figref idref="f0003">Fig. 7</figref> The illustrated embodiment of the cross section of the vehicle body 2 as well as the side member 8 can also be seen the floor assembly 9, the roof assembly 10 and the two longitudinal walls 11, 12. The previously described receiving channel 23 for receiving the central longitudinal member 8 in the floor structure 13 is again provided.

0079The two longitudinal walls 11, 12 are arranged in the area of ​​the outer boundary of the vehicle body 2 and preferably extend continuously between the floor assembly 9 and the roof assembly 10. A corresponding fixed connection with these two assemblies 9, 10 can also be provided. Likewise, a firm, stable connection between the two longitudinal walls 11, 12 and the transverse wall or walls 14 can also take place.

0080Due to the stable design of the two longitudinal walls 11, 12, in this embodiment shown here, the roof assembly 10 can be designed with a lower load-bearing function than previously in FIG <figref idref="f0003">Fig. 6</figref> has been shown.

0081In all of the exemplary embodiments described so far, the longitudinal beam 8 is received in the floor structure 13 of the floor assembly 9, recessed in the direction of the roof assembly 10. In dashed lines it is also indicated that the longitudinal member 8 can also be arranged or received in a receiving channel 23 provided in the floor structure 13, which receiving channel 23 is formed deepened in the floor structure 13 on the side facing away from the roof assembly 10. The receiving channel 23 thus protrudes in the direction of the contact surface 7 over the bottom underside 24 of the floor structure 13.

0082With the two in the <figref idref="f0003">Figures 6 and 7</figref> The illustrated cross-sections of the vehicle body 2 each have the roof assembly 10 an approximately or predominantly planar design.

0083In the <figref idref="f0004">Fig. 8</figref> a further and possibly independent embodiment of the vehicle body 2 and of the longitudinal member 8 is shown, again with the same reference numerals or component names as in the preceding for the same parts <figref idref="f0001 f0002 f0003">Figs. 1 to 7</figref> be used. To avoid unnecessary repetition, please refer to the detailed description in the preceding section<figref idref="f0001 f0002 f0003">Figs. 1 to 7</figref> pointed out or referred to.

0084Here, too, the vehicle body 2 comprises the floor assembly 9, the roof assembly 10, the two longitudinal walls 11, 12 and the transverse walls 14. The transverse wall 14 shown here can have recesses or breakthroughs in order to enlarge the receiving space located within the vehicle body 2 or else also save weight.

0085In contrast to the roof assembly 10, which was previously designed to be flat on the outside, it is also shown here that the roof assembly 10, for example, to accommodate items of equipment and equipment to be carried in the area of ​​the roof, such as ladders, rods, pipes or transport boxes, one in a transverse direction to the vehicle longitudinal direction may have stepped or stepped structure.

0086For example, the roof assembly 10 can have a left roof rack 26 and a right roof rack 27. In addition, the roof assembly 10 can also include at least one roof element 28 connecting the left and right roof carriers 26, 27. If a plurality of receiving areas arranged recessed in the roof assembly 10 are to be created, it is possible for the roof assembly 10 to include at least one further roof rack 29. However, two further roof carriers 29 are preferably provided, it being possible for the two further roof carriers 29 to be arranged at a distance from one another in the vertical direction with respect to the vehicle longitudinal direction. Furthermore, the at least one further roof rack 29 is arranged in the vertical direction with respect to the longitudinal direction of the vehicle between the left roof rack 26 and the right roof rack 27. It would still be possible for the at least one further roof rack 29 to be also connected to the roof element 28, in particular to be connected in a fixed or fixed manner.

0087To form a stable, solid design of the overall supporting structure, it is also advantageous if the roof assembly 10, in particular its roof girders 26, 27, 29, is firmly connected to at least one of the transverse walls 14. The roof assembly 10 can thus be incorporated into the formation of the self-supporting vehicle body 2 as a compression belt.

0088The <figref idref="f0004">Fig. 9</figref> shows a possible cross section of the vehicle body 2 as well as of the side member 8 for that emergency vehicle 1, as this one in FIG <figref idref="f0003">Fig. 5</figref> has been shown and described previously. The central longitudinal member 8 is received in the receiving channel 23 of the floor structure 13 to form the floor assembly 9 that belongs together. Furthermore, transverse walls 14 are provided or arranged between the floor assembly 9 and the roof assembly 10. Due to the low vertical construction height of the transverse walls 14 in the second offset roof area 22, the two longitudinal walls 11, 12 also have only a low construction height. To reinforce the longitudinal member 8, the two longitudinal walls 11, 12 are arranged directly above without any substantial lateral offset with respect to the longitudinal member 8. The roof assembly 10 can in turn be implemented, for example, by a sandwich structure in order to be able to form a sufficiently strong compression belt of the vehicle body.

0089Furthermore, it is shown here on the side of the vehicle body 2 that an additional support device 30, as this is well known, is to be provided to relieve the wheel pairs 3, 4. The floor space of the emergency vehicle 1 can thus be enlarged and, moreover, the stability can be improved.

0090In general, it should also be pointed out that the possibility created here for the variable arrangement of the transverse walls 14 and at least one of the two longitudinal walls 11, 12 in connection with the roof assembly 10 creates a high degree of freedom for dividing the receiving space delimited by the vehicle body 2 into a wide variety of subspaces 31 . In the<figref idref="f0003">Fig. 6</figref> several of the subspaces 31 are entered. In the individual sub-spaces 31 separated from one another, a predefined space can thus be provided for the accommodation of items of equipment, assemblies, boxes, containers or just a storage space. Depending on the arrangement, at least one subspace 31 can also form a tank for an extinguishing agent and / or an additional extinguishing agent. It would also be possible for the emergency vehicle 1 to include at least one independent tank, in particular an extinguishing agent tank, within the receiving space delimited by the vehicle body 2, the independent tank then being firmly connected to the central longitudinal member 8 and / or the floor assembly 9.

0091The exemplary embodiments show possible design variants, whereby it should be noted at this point that the invention is not limited to the specifically illustrated design variants of the same, but rather various combinations of the individual design variants with one another are possible and this possibility of variation is possible due to the teaching of technical action through the present invention in the Ability of the skilled person working in this technical field.

0092The scope of protection is determined by the claims. However, the description and the drawings are to be used to interpret the claims. Individual features or combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions. The task on which the independent inventive solutions are based can be found in the description.

0093All information on value ranges in the present description should be understood to include any and all sub-areas, e.g. the information 1 to 10 should be understood to include all sub-areas, starting from the lower limit 1 and the upper limit 10 , ie all sub-ranges begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, for example 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

0094For the sake of clarity, it should finally be pointed out that for a better understanding of the structure of the emergency vehicle 1, in particular its self-supporting structure, components or elements have been shown partially not to scale and / or enlarged and / or reduced.<tables id="tabl0001" num="0001"><table frame="none"><title><b>List of reference symbols</b></title><tgroup cols="4" colsep="0" rowsep="0"><colspec colnum="1" colname="col1" colwidth="15mm" /><colspec colnum="2" colname="col2" colwidth="33mm" /><colspec colnum="3" colname="col3" colwidth="15mm" /><colspec colnum="4" colname="col4" colwidth="17mm" /><tbody><row><entry>1</entry><entry>Emergency vehicle</entry><entry>31</entry><entry>Subspace</entry></row><row><entry>2</entry><entry>Vehicle body</entry><entry /><entry /></row><row><entry>3</entry><entry>Front wheel pair</entry><entry /><entry /></row><row><entry>4</entry><entry>Rear wheel pair</entry><entry /><entry /></row><row><entry>5</entry><entry>Front</entry><entry /><entry /></row><row><entry>6</entry><entry>Rear side</entry><entry /><entry /></row><row><entry>7</entry><entry>Footprint</entry><entry /><entry /></row><row><entry>8</entry><entry>Side member</entry><entry /><entry /></row><row><entry>9</entry><entry>Floor assembly</entry><entry /><entry /></row><row><entry>10</entry><entry>Roof assembly</entry><entry /><entry /></row><row><entry>11</entry><entry>left long wall</entry><entry /><entry /></row><row><entry>12</entry><entry>right long wall</entry><entry /><entry /></row><row><entry>13</entry><entry>Soil structure</entry><entry /><entry /></row><row><entry>14</entry><entry>Transverse wall</entry><entry /><entry /></row><row><entry>15</entry><entry>Holding frame</entry><entry /><entry /></row><row><entry>16</entry><entry>Window</entry><entry /><entry /></row><row><entry>17</entry><entry>Exterior cladding</entry><entry /><entry /></row><row><entry>18</entry><entry>Driver's cab</entry><entry /><entry /></row><row><entry>19</entry><entry>End cross member</entry><entry /><entry /></row><row><entry>20</entry><entry>first roof area</entry><entry /><entry /></row><row><entry>21</entry><entry>Intermediate area</entry><entry /><entry /></row><row><entry>22</entry><entry>second roof area</entry><entry /><entry /></row><row><entry>23</entry><entry>Recording channel</entry><entry /><entry /></row><row><entry>24</entry><entry>Bottom bottom</entry><entry /><entry /></row><row><entry>25</entry><entry>Central longitudinal plane</entry><entry /><entry /></row><row><entry>26</entry><entry>left roof rack</entry><entry /><entry /></row><row><entry>27</entry><entry>right roof rack</entry><entry /><entry /></row><row><entry>28</entry><entry>Roof element</entry><entry /><entry /></row><row><entry>29</entry><entry>roof rack</entry><entry /><entry /></row><row><entry>30</entry><entry>Support device</entry><entry /><entry /></row></tbody></tgroup></table></tables>