Vehicle body, in particular a refrigerated vehicle, modular system for producing such a vehicle body

Abstract

A vehicle body with a floor (10) having at least two cross members (11) arranged between a lower cover layer (12) and an upper cover layer (13), wherein an intermediate space (14) formed between the cross members (11) is filled with a thermally insulating foam material, at least one of the cross members (11) being formed by an I-beam having an upper chord (15), a lower chord (16), and a web (17) connecting the upper chord (15) and the lower chord (16), wherein two receiving spaces (18), each formed in the form of a channel between the upper chord (15) and the lower chord (16), are filled with the foam material, characterized in that the cross member (11) is formed from a fiber-reinforced plastic material, and the web (17) has at least one through-opening (21) for receiving a cable duct (23), which is arranged closer to the lower chord (16) than to the upper chord (15),wherein the through-opening (21) is formed adjacent to the lower chord (16), so that the cable duct (23) which is guided through the through-opening (21) can be supported on the lower chord (16).

Description

[0001] The invention relates to a vehicle body according to the preamble of patent claim 1. Furthermore, the invention relates to a modular system for producing such a vehicle body, as well as the use of the modular system in a manufacturing method.

[0002] A vehicle body of the type mentioned above is known, for example, from EP 2 025 582 B1. US Pat. No. 5 054 843 A also shows a floor construction particularly suitable for insulated vehicle bodies. The insulated floor consists of a deck supporting plastic supports mounted on a lower shell. The lower shell rests on metal cross members, and the areas between the deck, plastic supports, and lower shell are filled with foam, which provides insulation and mechanically and adhesively bonds the components together.

[0003] The known vehicle body is a refrigerated vehicle body whose floor has a lower covering layer and an upper covering layer. Cross members, preferably made of wood, are provided between the upper and lower covering layers. The space or chamber between the cross members is filled with a thermally insulating foam material. This is intended to ensure that the set temperature in the interior of the vehicle body is maintained as effectively as possible. The floor should therefore have good thermal insulation properties.

[0004] EP 3 090 926 B1 discloses a floor for a similar vehicle body. It is additionally provided that the wooden cross members have recesses in some areas into which the foam material can penetrate. The cross members are thus locally weakened, whereby a compromise is sought between good stability and improved insulation. Good stability is essential, for example, for forklift trucks to be able to drive over the floor. EP 3 090 926 B1 has recognized that weakening the cross members leads to a reduction in heat conduction through the floor because a larger proportion of insulating foam material is present in the floor. As a result, the insulating effect of the floor is said to be improved compared to the previous state of the art, but has not yet been satisfactorily optimized.

[0005] There is therefore an effort to further improve the insulating effect of a floor of a vehicle body, in particular of a refrigerated vehicle, while at the same time ensuring sufficient stability.

[0006] In this respect, the object of the invention is to further develop existing technologies and, in particular, to provide a vehicle body that offers improved floor stability with additionally improved thermal insulation. A further object of the invention is to provide a modular system for producing such a vehicle body and the use of a modular system for producing such a vehicle body. Various electrical or pneumatic lines, as well as fuel lines if necessary, must be accommodated in vehicle bodies, particularly refrigerated vehicles. The floor is suitable for this purpose, with appropriate cable ducts being provided.

[0007] According to the invention, this object is achieved with regard to the vehicle body by the subject matter of patent claim 1, with regard to the modular system by the subject matter of patent claim 14 and with regard to the use of the modular system by the subject matter of patent claim 15.

[0008] Specifically, the invention is based on the idea of providing a vehicle body, in particular that of a refrigerated vehicle, comprising a floor having at least two cross members. The cross members are arranged between a lower cover layer and an upper cover layer. A space formed between the cross members is filled with a thermally insulating foam material. At least one of the cross members is formed by an I-beam having an upper chord, a lower chord, and a web connecting the upper and lower chords. Two channel-like receiving spaces filled with the foam material are formed between the upper and lower chords. According to the invention, the cross member is formed from a fiber-reinforced plastic material.The web has at least one through-hole for accommodating a cable duct, which is located closer to the lower chord than to the upper chord, and the through-hole is formed adjacent to the lower chord. The cable duct is guided through the through-hole in such a way that the cable duct can rest on the lower chord.

[0009] In the invention, at least one of the cross members is designed as an I-beam. Essentially, the cross member has an I-profile or double-T profile. This I-profile extends over the entire length of the cross member. Essentially, the cross member has a constant cross-sectional profile. However, this does not preclude the possibility of providing partial openings. Designing the cross member as an I-beam has the particular advantage that the space between the cross members, i.e. the space filled with the thermally insulating foam material or the chamber formed between the cross members, is enlarged. Conversely, the volume of the cross member is reduced. In particular, the heat transfer mass that connects the two cover layers to one another is significantly reduced. The material of the cross member, namely the fiber-reinforced plastic material, also contributes to this.Fiber-reinforced plastics exhibit low thermal conductivity. Another advantage is their insensitivity to moisture compared to wood, for example.

[0010] Furthermore, fiber-reinforced plastic materials are characterized by particularly high strength combined with low weight. This provides an additional advantage. The vehicle body according to the invention is particularly lightweight due to the use of cross members made of a fiber-reinforced plastic material, which correspondingly increases the payload to be transported. The inventive design of the cross members thus contributes to lightweight construction, provides sufficient stability for the floor of the vehicle body, and increases the thermal insulation effect of the vehicle body.

[0011] Specifically, the I-beam can have an upper chord, a lower chord, and a web connecting the upper and lower chords. Channel-like receiving spaces between the upper and lower chords, particularly separated by the web, can be filled with the foam material. The receiving spaces each form part of an intermediate space or chamber filled with the foam material.

[0012] The upper and lower chords can each be the same width. Together with the web, the upper and lower chords essentially form two mirrored U-profiles, the receiving spaces of which are completely filled with the foam material. Overall, a larger area of the floor is covered with foam material compared to the state of the art, increasing the floor's thermal insulation effect. The pressure exerted by the load on the upper floor layer is transferred via the upper chord, the web, and the lower chord to the lower floor layer, thus being evenly distributed across the entire floor area. The I-beams thus provide sufficient stability for the vehicle body.

[0013] In a preferred embodiment of the invention, the upper chord and / or the lower chord each have an adhesive groove on a side opposite the web, which preferably extends over the entire length of the cross member. The adhesive groove preferably has a width that is greater than the width of the web. Instead of a single adhesive groove, it is also possible to provide several individual grooves along the upper chord or the lower chord. The grooves preferably extend in the longitudinal direction of the cross member. The adhesive groove(s) make it possible to accommodate adhesive that ensures the connection between the cross member and one of the cover layers. The fiber-reinforced plastic material of the cross member offers the opportunity to connect the cross member and the cover layers by adhesive bonding. This requires little time during assembly and thus reduces manufacturing costs.

[0014] The cross member, in particular the cross member formed by the I-beam made of fiber-reinforced plastic material, can have a recess at one longitudinal end, which is filled with the foam material. Specifically, the recess can be formed in the web of the cross member. The recess forms a connection between two adjacent spaces, each formed between two cross members. Thus, as the foam material penetrates, the foam material can transfer from one space between two cross members into an adjacent space between two cross members. This facilitates the manufacturing process for the floor of the vehicle body.

[0015] To ensure high strength and stability of the cross member, it can preferably be provided that the cross member, in particular the web, has only a single foam-filled recess. The recess can also be open toward the longitudinal end of the cross member or web. Such a recess is particularly easy to implement and ensures that the foam material can easily transfer from one space between two cross members to the adjacent space between two cross members.

[0016] The cross member, in particular the web, can also have at least one through-hole for accommodating a cable duct. Various electrical or pneumatic lines, as well as fuel lines if necessary, must be accommodated in vehicle bodies, particularly refrigerated vehicles. The floor is suitable for this purpose, with appropriate cable ducts provided. These can be routed through the cross members.

[0017] Preferably, the through-hole is located closer to the bottom chord than to the top chord. Specifically, the through-hole can be located directly adjacent to the bottom chord. This ensures that sufficient foam material is placed above the through-hole to prevent thermal bridging. When the cable duct is positioned close to the bottom chord, the temperature difference between the cable duct and the outside environment is comparatively small, preventing condensation from forming in the cable duct. Additionally, the position of the through-hole in the lower area of the web ensures that the cross member is highly stable above the through-hole, which has a positive effect on the overall stability of the floor.

[0018] In preferred embodiments, the cross member is connected at each of its longitudinal ends to a longitudinal member, in particular, the longitudinal member and the upper chord of the cross member are positively connected. The floor therefore preferably comprises longitudinal members, in particular two longitudinal members, arranged at the longitudinal ends of the cross members. The longitudinal members preferably extend at right angles to the cross members.

[0019] According to one possible embodiment, a retaining web is arranged on the longitudinal member. The retaining web extends from the longitudinal member toward the cross member. When installed, the retaining web of the longitudinal member overlaps the upper chord of the cross member. This creates a positive connection in the vertical direction.

[0020] The longitudinal members are preferably made of a fiber-reinforced plastic material.

[0021] In general, the fiber-reinforced plastic material, especially the cross member and / or the longitudinal member, can be glass fiber reinforced. Alternatively, the fiber-reinforced plastic material can also be carbon fiber reinforced. For cost reasons, glass fiber reinforcement is preferred.

[0022] The longitudinal member, in particular both longitudinal members, preferably has a side web against which the cross member rests. In particular, the cross member can be glued to the side web. The side web preferably extends over the entire height of the cross member.

[0023] In one variant of the vehicle body, the cross member rests directly on the side web. In another variant of the vehicle body, the longitudinal member has a side web that includes a spacer flange, wherein the cross member, in particular the upper chord, rests against the spacer flange, leaving a gap between the side web and the cross member. In this variant, the longitudinal member is designed such that the cross member does not rest directly on the side web, but rather on a spacer flange, which is preferably formed integrally with the side web.

[0024] The two aforementioned variants have different objectives. In general, two different vehicle bodies can be distinguished from one another. On the one hand, vehicle bodies with insulating foam material are used as general-purpose refrigerated vehicle bodies, for example, for the transport of flowers or food that must be transported at moderate cooling temperatures. On the other hand, such vehicle bodies are designed as deep-freeze vehicle bodies, in which sub-zero temperatures must be maintained permanently. To meet these different requirements, the loading space boundaries, especially the side walls, of such vehicle bodies are designed with different thicknesses. A deep-freeze vehicle body requires a thicker side wall with correspondingly more foam material than a general-purpose refrigerated vehicle body.Since the external dimensions of vehicle bodies are legally limited, the varying thickness of the side walls affects the internal dimensions. Therefore, different vehicle variants typically require cross members of different lengths to compensate for the different wall thicknesses between a deep-freeze vehicle body and a general-purpose refrigerated vehicle body. However, this leads to high component variance, which results in high manufacturing costs.

[0025] The different longitudinal members provided in preferred embodiments of the invention now make it possible to use identical cross members for both vehicle body variants. For refrigerated vehicle bodies, only longitudinal members are required, against whose side web the cross member rests directly. The interior width is thus reduced, so that more space is available for correspondingly thicker side walls of a refrigerated vehicle body. For a vehicle body designed as a general-purpose refrigerated vehicle body, however, longitudinal members are used that enclose the spacer flange. When the spacer flange rests against the top chord, the spacer flange essentially widens the inside of the vehicle body, so that a larger usable area is available, while the external dimensions of the vehicle body are retained due to the thinner side walls.The gap remaining between the side web of such a longitudinal member and the cross member can then be filled with a strip of rigid foam or a strip of wood.

[0026] Specifically, a rigid foam strip or a wooden strip can be arranged in the gap. The rigid foam strip or the wooden strip can be glued to the longitudinal member, in particular the side member and / or the cross member. Another possibility is for the gap to be filled with foam.

[0027] In this respect, a further aspect of the invention consists in specifying a modular system for producing two different vehicle body variants, wherein the modular system comprises a plurality of identical lower cover layers, a plurality of upper cover layers, a plurality of identical cross members, a plurality of identical first longitudinal members and a plurality of identical second longitudinal members. The first longitudinal members are assigned to a first vehicle body variant and the second longitudinal members to a second vehicle body variant. The lower cover layers and the cross members are each assigned to both vehicle body variants. In this way, the proportion of identical parts in production is increased because the same lower cover layers and cross members can be used for all vehicle body variants. Only the longitudinal members and upper cover layers differ depending on the vehicle body variant.

[0028] In this respect, it is preferred if the first vehicle body variant is a refrigerated vehicle body with a longitudinal member whose side web directly abuts the cross member. The second vehicle body variant can be a general-purpose refrigerated vehicle body with a longitudinal member comprising a spacer flange that abuts the cross member in such a way that a gap remains between the side web and the cross member.

[0029] The upper cover layer can have two layers. A first layer can be referred to as the stability layer, and a second layer can be referred to as the protective layer. The stability layer comprises, for example, a wooden panel, and the protective layer an aluminum plate or an aluminum covering. The protective layer is arranged on an outer side of the stability layer. In other words, the protective layer covers the stability layer. It is conceivable that the protective layer of the upper cover layer is wider than the stability layer.

[0030] The upper deck layer differs depending on the vehicle body variant. In the refrigerated vehicle body, the stability layer is wider than the protective layer because the side wall thickness is greater. In the general-purpose refrigerated vehicle body, the wall thickness is smaller. To compensate for the different wall thicknesses while maintaining the same stability, different longitudinal members are used than in the refrigerated vehicle variant. The longitudinal members of the general-purpose refrigerated vehicle body are preferably wider. This compensates for the thinner wall thickness. To ensure the most seamless transition possible, the protective layer, i.e. the aluminum covering, can be wider than the stability layer and extend beyond it towards the side wall.

[0031] A further aspect of the invention relates to a method for producing a vehicle body as described above, in which the following steps are carried out: a. Providing at least two cross members made of a fiber-reinforced plastic material, b. Arranging the cross beams between an upper facing layer and a lower facing layer and bonding the cross beams to the facing layers to form a floor structure and c. Filling the gap between the cross members with insulating foam material.

[0032] The floor structure can be arranged in a press to fill the space formed between the crossbeams with insulating foam material. This prevents the cover layers from lifting off the crossbeams due to the expansion of the foam material. In a variant of a floor structure in which individual crossbeams have recesses that are foam-filled, it is advantageous if the floor structure is tilted before the foam material is filled. In particular, the floor structure can be tilted so that the longitudinal beams are arranged at an angle to a horizontal line. The foam material is preferably filled from an upper side edge of the floor structure, with the recess being provided at a lower longitudinal end of the crossbeam.The foam material can thus flow downwards along the cover layer and the cross members, pass through the recess into another space between two cross members and then fill this space from bottom to top.

[0033] According to a subordinate aspect of the invention, a previously described modular system is preferably used to carry out the method. The materials required to manufacture the vehicle body are thus taken from the modular system, with a first longitudinal member being taken from the modular system for the manufacture of a refrigerated vehicle body, whereas a second longitudinal member is taken from the modular system for the manufacture of a general-purpose refrigerated vehicle body.

[0034] In one embodiment, it is advantageous if the at least one longitudinal member is bonded to the lower cover layer. This achieves better stability.

[0035] The invention is explained in more detail below using exemplary embodiments with reference to the attached schematic drawings.

[0036] In it show Fig. 1 a perspective view of a floor structure of a vehicle body according to the invention according to a preferred embodiment; Fig. 2 an enlargement of the soil structure according to Fig. 1; Fig. 3 a cross-section through part of a floor structure of a vehicle body according to the invention according to a further preferred embodiment; Fig. 4 a perspective view of a cross member of the floor structure according to Fig. 3; Fig. 5 a perspective view of a floor structure of a vehicle body according to the invention according to a further preferred embodiment with a longitudinal member for a refrigerated vehicle body; Fig. 6 a perspective view of a vehicle body according to the invention according to a further preferred embodiment with a longitudinal member for a general-purpose refrigerated vehicle body; Fig. 7 is a cross-sectional view of a refrigerated vehicle body according to a preferred embodiment; Fig. 8 is a cross-sectional view of a general-purpose refrigerated vehicle body according to a preferred embodiment of the invention; Fig. 9 a perspective view of a floor structure of a vehicle body according to the invention according to a further preferred embodiment and Fig. 10 a perspective view of a floor structure of a vehicle body according to the invention according to another preferred embodiment

[0037] Fig. Figure 1 shows a floor 10, in particular a floor structure, of a vehicle body according to the invention. The floor structure refers to the structural components of the floor 10, i.e., essentially the floor 10 without the insulating foam material. Specifically, Fig. 1 shows the front part of a floor structure of a floor 10 for a semi-trailer, wherein the kingpin holder 30 can also be seen.

[0038] The floor 10 comprises a lower cover layer 12, on which several crossbeams 11 are arranged. The crossbeams 11 are spaced at different distances from one another, with a denser arrangement of crossbeams 11 being provided in the area of the kingpin receptacle 30. Particularly high forces are transmitted in this area of the semi-trailer, which places additional demands on the stability of the floor 10. The required increased stability is achieved by arranging several crossbeams 11, specifically three crossbeams 11 on each side of the kingpin receptacle 30, directly adjacent to one another on the lower cover layer 12.

[0039] The floor 10 further comprises an upper covering layer 13, which is Fig. 1 and Fig. 2 is not shown for reasons of clarity. The upper cover layer 13 usually rests on the cross members 11.

[0040] In Fig. 1 also shows that the cross members 11 are designed as I-beams or double-T-beams. The cross members 11 extend essentially across almost the entire width of the lower cover layer 12. Each cross member has two through-openings 21. The through-openings 21 are arranged at the longitudinal ends 22 of the cross member 11. A cable duct 23 extends through each of the through-openings 21, which is preferably continuous across the entire longitudinal direction of the floor 10.

[0041] Particularly preferably, the cable duct 23 extends to the support legs of the vehicle body, in particular a semi-trailer body. The support legs are arranged in the vehicle body half that does not adjoin the rear of the vehicle body. The support legs serve to park the vehicle body when it is not coupled to a towing vehicle. In other words, the cable duct 23 preferably extends between a front floor and the support legs of the vehicle body. The length of the cable duct 23 is preferably between two and four meters, in particular 3.6 meters.

[0042] At the front end of the floor 10, an end cross member 31 is provided, which, unlike the cross members 11, does not have an I-shaped profile, but rather a rectangular profile. The end cross member 31 also includes two through-openings 21, into each of which the cable duct 23 opens.

[0043] The cross members 11 further each have a recess 20 at a longitudinal end 22. The recess 20 is formed as a circular opening. Other shapes are possible. The purpose of the recess 20 is to create a passage for foam material. Foam material can thus be poured into the spaces 14 between the cross members 11 and flow through the recesses 20 into the adjacent space 14. This ensures rapid and even filling of the floor structure with foam material.

[0044] In Fig. 2, the I-profile of the cross members 11 becomes even more clearly visible. In particular, each cross member 11 has an upper chord 15 and a lower chord 16. The upper chord 15 and the lower chord 16 are connected to each other by a web 17. The cross member 11 is preferably formed in one piece.

[0045] Both the upper chord 15 and the lower chord 16 each have an adhesive groove 19. The adhesive groove 19 is open towards the cover layer 12, 13 and can accommodate an adhesive that firmly bonds the cross member 11 to the respective cover layer 12, 13. As shown in Fig. 2, the adhesive groove 19 extends over the entire length of the cross member 11. In addition, the cross member 11 can be screwed to the lower and / or upper cover layer 12, 13. In particular, a threaded bore can be provided in the web 17, which extends through the lower chord 16 and / or the upper chord 15 into the web and receives a screw which is connected to the cross member 11 through the lower cover layer 12 or the upper cover layer 13.

[0046] Alternatively, it is conceivable that the threaded hole is located in the web 17 or in the upper or lower chords 15, 16. For this purpose, it is advantageous if the cross member 11 has a local thickening at the corresponding location.

[0047] The cross-sectional view according to Fig. Figure 3 clearly shows how the adhesive groove 19 provides a slot between the upper chord 15 or lower chord 16 and the upper cover layer 13 or lower cover layer 12. The slot can be filled with adhesive and thus establish the adhesive connection between the cross member 11 and the respective cover layer 12, 13. In Fig. 3 also clearly shows that two opposing receiving spaces 18 are formed between the upper chord 15 and the lower chord 16 along the web 17. These receiving spaces 18 are completely filled with the foam material. The only remaining thermal bridge is the web 17, which, however, is relatively thin and made of a fiber-reinforced plastic material with low thermal conductivity. Overall, these measures improve the insulating effect of the floor 10.

[0048] The upper cover layer 13 and the lower cover layer 12 can each comprise a wooden panel 32, each of which is covered with an aluminum sheet on its outer side, i.e., opposite the cross member 11. Alternatively, other configurations are possible. For example, the upper cover layer 13 can comprise an aluminum covering, and the lower cover layer 12 can comprise a plastic covering, in particular made of fiberglass. It is also possible for the lower cover layer 13 to comprise a steel or aluminum covering. Other materials and material combinations are conceivable.

[0049] Fig. 4 shows in perspective view the cross members 11 from Fig. 3. In this variant, the cross member 11 has a recess 20 at one longitudinal end 22, which is open toward the longitudinal end 22. Such a recess 20 can be easily implemented and does not significantly limit the stability of the cross member 11.

[0050] Furthermore, in Fig. 4 shows the through-opening 21, which extends through the web. The through-opening 21 is arranged closer to the lower chord 16 than to the upper chord 15. Specifically, the through-opening 21 borders the lower chord 16. This has several advantages. On the one hand, the cross member 11 remains very stable in this area, particularly above the through-opening 21. It is particularly advantageous if the through-opening 21 runs centrally along the neutral fiber. On the other hand, the cable duct 23, which is routed through the through-opening 21, is well insulated towards the cargo area, since sufficient foam material can form above the cable duct 23. The temperature differences between the interior of the cable duct 23 and an environment outside the vehicle body are therefore relatively small, thus preventing condensation from forming in the cable duct 23, which could damage the cables routed therein.Furthermore, the arrangement of the through-opening 21 adjacent to the lower chord 16 is advantageous since a cable duct 23, which is guided through the through-opening 21, can be supported on the lower chord 16.

[0051] Fig. 5 shows a lateral section of a floor structure of a floor 10, wherein the floor 10 has a lower cover layer 12 on which the cross members 11 rest. The cross members 11 are in particular glued to the lower cover layer 12. A longitudinal member 24 is provided at a longitudinal end 22 of the cross member 11. The longitudinal member 24 essentially has a Z-profile, the legs of which are formed at right angles to a side web 25. Specifically, the longitudinal member 24 has a side web 25 that extends vertically and against which the cross members 11 rest. Furthermore, a support flange 26 is provided, which extends along the lower chord 16 to its lateral edge. The support flange 26 serves to glue the longitudinal member 24 to the lower cover layer 12.On a side of the support flange 26 facing the lower cover layer 12, the longitudinal member 24 has an adhesive groove 19 which can receive adhesive for adhesively bonding the longitudinal member 24 to the lower cover layer 12.

[0052] In the embodiment according to Fig. 5, the cross member 11 rests with its longitudinal end 22 directly against the side web 25. This leaves sufficient space in the edge area, particularly in the area of the support flange 26, for a comparatively thick side wall 34, which is particularly necessary for refrigerated vehicle bodies. In particular, a retaining web 37 of the longitudinal member 24 overlaps the upper flange 15 of the cross member 11 to form a positive connection in the vertical direction and / or to form a material connection, particularly by adhesive bonding, between the longitudinal member 24 and the cross member 11.

[0053] In Fig. 6 shows an alternative variant of a floor 10 in which the longitudinal member 24 is designed differently. The variant according to Fig. 6 is suitable for vehicle bodies designed as general-purpose refrigerated vehicle bodies. Such vehicle bodies have a side wall 34 that is substantially narrower than the side walls 34 of a refrigerated vehicle body.

[0054] The longitudinal member 24 according to Fig. 6 comprises a side web 25, which carries a support flange 26 in the area of the lower cover layer 12. The support flange 26 is essentially analogous to the support flange 26 of the longitudinal member 24 according to Fig. 5. In particular, the support flange 26 has an adhesive groove 19 which can receive adhesive for connecting the longitudinal member 24 to the lower cover layer 12.

[0055] In the area of the upper cover layer 13, the longitudinal member 24 has Fig. 6 has a spacer flange 27. In the illustrated embodiment, a total of three spacer flanges 27 are provided, which ensure that one or more gaps 28 are present between the side web 25 and the cross member 11. These gaps 28 can be filled, for example, with rigid foam strips 29 or with wooden strips. Alternatively, the gaps 28 can be foamed. The uppermost spacer flange 27 is essentially designed as an L-shaped hollow profile, which forms a contact surface for the longitudinal end 22 of the cross member 11. A middle spacer flange 27 is essentially designed as a T-profile, with a stem of the T-profile being connected at right angles to the side web 25. A bar of the T-profile extends parallel to the side web 25 and forms a stop for the longitudinal end 22 of the cross member 11.A lower spacer flange is formed by an L-profile, the long leg of which forms an extension of the support flange 26 and is connected at right angles to the side web 25. A short leg of the L-profile runs parallel to the side web 25 and preferably aligned with the beam of the T-profile of the middle spacer flange 27. The cross member 11 is in the embodiment according to . Fig. 6 is thus held at a distance from the side web 25 by three spacer flanges 27. In particular, the retaining web 37, which is arranged on the upper spacer flange 27, overlaps the upper flange 15 of the cross member 11. The overlap preferably forms a positive connection between the longitudinal member 24 and the cross member 11 in the vertical direction. Alternatively or additionally, the longitudinal member 24, in particular the retaining web 37, and the cross member 11 can be glued together.

[0056] In the Fig. 7 and Fig. 8 shows further variants for the longitudinal members 24. Fig. 7 shows a longitudinal member 24 suitable for refrigerated vehicle bodies. The longitudinal member 24 comprises a side web 25 and a support flange 26. However, the support flange 26 of the longitudinal member 24 serves to accommodate the cross member 11. The cross member 11 rests directly against the side web 25 with its longitudinal end 22.

[0057] In the embodiment according to Fig. 8, the side wall 34 is thinner than in the embodiment according to Fig. 7. The embodiment according to Fig. 8 is therefore suitable for general-purpose refrigerated vehicle bodies where a higher interior temperature is tolerated than in deep-freeze vehicle bodies.

[0058] The longitudinal member 24 in Fig. 8 comprises a support flange 26 on which the cross member 11 rests. A side web 25 extends substantially at right angles from the support flange 26 and terminates in a spacer flange 27. The spacer flange 27 comprises a substantially rectangular hollow profile, which is preferably formed integrally with the side web 25. The spacer flange 27 serves to bridge a gap between the side wall 34 and the cross member 11 and can be used for various vehicle body variants, in particular deep-freeze vehicle bodies and general-purpose refrigerated vehicle bodies. Thus, the same cross members are used for several different vehicle body variants, thereby increasing the proportion of common parts in production and thus reducing manufacturing costs.

[0059] Fig. 9 shows an embodiment in which the longitudinal member 24 comprises a longitudinal web 35. In the installed state, the longitudinal web 35 is arranged at the end of the longitudinal member 24 facing the lower cover layer 12. In other words, the longitudinal web 35 is arranged in the region of the lower flange 16 of the cross member 11 in the installed state. The longitudinal web 35 extends in the longitudinal direction of the longitudinal member 24. The longitudinal web 35 has a plurality of recesses 36. In the assembled state, the cross member 11 is arranged in the recess 36. In concrete terms, this creates a positive connection between the longitudinal web 35 and the lower flange 16 of the cross member 11.

[0060] Fig. 10 shows a further embodiment of a positive connection between the longitudinal member 24 and the cross member 11. In Fig.10, the longitudinal web 35 is arranged centrally on the longitudinal member 24. The longitudinal web 35 extends in the longitudinal direction of the longitudinal member 24 and has recesses 36 for the cross member 11, in particular for the web 17 of the cross member 11.

[0061] The longitudinal web 35 and the recesses 36 enable a positive connection in the horizontal direction between the longitudinal beam 24 and the cross beam 11. This simplifies the assembly of the floor structure. List of reference symbols 10 Floor 11 cross members 12 lower cover layer 13 upper cover layer 14 space 15 Upper chord 16 Lower chord 17 jetty 18 Recording room 19 Adhesive groove 20 recess 21 Passage opening 22 Longitudinal end 23 cable duct 24 longitudinal members 25 side bridge 26 Support flange 27 Spacer flange 28 gap 29 hard foam strips 30 kingpin holder 31 end cross member 32 wooden board 33 aluminum sheet 34 side wall 35 Longitudinal web 36 recess 37 Stop bridge

Claims

[1] Vehicle body with a floor (10) having at least two cross members (11) arranged between a lower cover layer (12) and an upper cover layer (13), wherein an intermediate space (14) formed between the cross members (11) is filled with a thermally insulating foam material, at least one of the cross members (11) is formed by an I-beam having an upper chord (15), a lower chord (16) and a web (17) connecting the upper chord (15) and the lower chord (16), wherein two receiving spaces (18) each formed in the form of a channel between the upper chord (15) and the lower chord (16) are filled with the foam material, characterized byin that the cross member (11) is formed from a fiber-reinforced plastic material and the web (17) has at least one through-opening (21) for receiving a cable duct (23), which is arranged closer to the lower chord (16) than to the upper chord (15), wherein the through-opening (21) is formed adjacent to the lower chord (16) so that the cable duct (23) which is guided through the through-opening (21) can be supported on the lower chord (16). [2] Vehicle body according to claim 1, characterized by that it is suitable for a refrigerated vehicle. [3] Vehicle body according to claim 1 or 2, characterized by that the receiving spaces (18) are separated from each other by the web (17). [4] Vehicle body according to claim 3, characterized by that the upper chord (15) and / or the lower chord (16) each have an adhesive groove (19) on a side opposite the web (17), which preferably extends over the entire length of the cross member (11). [5] Vehicle body according to one of the preceding claims, characterized by that the cross member (11), in particular the web (17), has a recess (20) at one longitudinal end (22) which is filled with the foam material. [6] Vehicle body according to claim 5, characterized by that the cross member (11), in particular the web (17), has only a single foam-filled recess (20). [7] Vehicle body according to claim 5 or 6, characterized by that the recess (20) is open towards the longitudinal end (22). [8] Vehicle body according to one of the preceding claims, characterized by that the cross member (11) is connected with its longitudinal ends (22) to a longitudinal member (24), in particular the longitudinal member (24) and the upper chord (15) of the cross member (11) are positively connected. [9] Vehicle body according to claim 8, characterized by that the longitudinal member (24) is formed from a fiber-reinforced plastic material. [10] Vehicle body according to one of the preceding claims, characterized by that the fiber-reinforced plastic material is glass fiber reinforced. [11] Vehicle body according to one of claims 8 to 10, characterized by that the longitudinal member (24) has a side web (25) against which the cross member (11) rests. [12] Vehicle body according to one of claims 8 to 10, characterized by that the longitudinal member (24) has a side web (25) which comprises a spacer flange (27), wherein the cross member (11), in particular the upper chord (15), rests against the spacer flange (27) so that a gap (28) remains between the side web (25) and the cross member (11). [13] Vehicle body according to claim 12, characterized by that a hard foam strip (29) or a wooden strip is arranged in the gap (28) or that the gap (28) is foamed. [14] Modular system for producing two different vehicle body variants, each designed according to one of the preceding claims, comprising a plurality of identical lower cover layers (12), a plurality of upper cover layers (13), a plurality of identical cross members (11) made of a fiber-reinforced plastic material, a plurality of identical first longitudinal members (24) and a plurality of identical second longitudinal members (24), wherein the first longitudinal members (24) are assigned to a first vehicle body variant, the second longitudinal members (24) to a second vehicle body variant and the lower cover layers (12) and the cross members (11) are each assigned to both vehicle body variants, wherein the first vehicle body variant is a deep-freeze vehicle body with a longitudinal member (24) according to claim 11 and the second vehicle body variant is a general-purpose refrigerated vehicle body with a longitudinal member (24) according to claim 12. [15] Use of a modular system according to claim 14 in a method for producing a vehicle body according to claim 11 or 12, in which the following steps are carried out: a. Providing at least two cross members (11) made of a fiber-reinforced plastic material, b. Arranging the cross members (11) between an upper cover layer (13) and a lower cover layer (12) and gluing the cross members (11) to the cover layers (12, 13) to form a floor structure, and filling a space (14) formed between the cross members (11) with insulating foam material.

Images