DE102011106557B4 - Cross member device for a vehicle, in particular for a commercial vehicle - Google Patents

Abstract

Cross member device (10) for a vehicle, in particular for a commercial vehicle, transport vehicle and the like, comprising a first connecting portion (20), a second connecting portion (30) and a connecting element (40) which is formed between the two connecting portions (20, 30) in that the first connecting section (20) can be positively connected to a first connecting device (50) and the second connecting section (30) can be positively connected to a second connecting device (60), characterized in that the first connecting section (20) and / or the connecting element (40) and / or the second connecting portion (30) contains fiber reinforced plastic.

Description

1. Technical area

The present invention relates to a transverse support device for a vehicle, in particular a commercial vehicle, according to the preamble of claim 1 and a vehicle frame of a commercial vehicle according to the preamble of claim 13. Embodiments of the present invention relate to an arrangement for stabilizing vehicles under the action of different force components, which can occur both when loading and unloading the vehicle with a payload and during the movement of the vehicle.

2. State of the art

From the prior art, a variety of self-propelled or foreign moving vehicles, especially commercial vehicles, transport vehicles, tankers and vehicle bodies are known, which have a different configuration depending on the purpose of transport and use.

Commercial vehicles usually have a vehicle frame. On this vehicle frame usually axle mounts, so-called supports, attached. In practice, the axle mountings must be supported by C-beams in order to be able to absorb the force components occurring as a result of the movement of the vehicle or payload. The arrangement and design of the C-beam depends in particular on the load of the commercial vehicle and on the embodiments of the supports of the different axle manufacturer.

The presently available in practice C-beam, which is to be understood as a combined column cross bracing unit, consists of metal and is formed from one piece.

For example, is from the DE 10 2009 019 786 A1 a carrier arrangement for a vehicle frame of a commercial vehicle, with a running between two frame rails of the vehicle frame cross member which is connected in the assembled state by means of cross member attachment areas on the frame rails, and associated with the cross beam end portions support brackets, wherein at least one support bracket fixed in the mounted state on the cross member is and / or at least partially encompasses the respective associated cross member area with a console-side Umgriffsbereich.

Furthermore, from the DE 10 2006 041 664 A1 a carrier assembly for attachment to two longitudinal frame members of a vehicle frame in the region above an axle assembly of a truck with two the respective frame side members associated carrier parts known, which are interconnected via a transverse in the vehicle transverse direction of the cross member. The carrier parts are formed from cast or forged parts.

When transporting payloads, the vehicle usually has at least one cross-brace, which is connected via supports with a payload container for receiving a payload. Both when loading and unloading the vehicle with a payload and during the movement of the vehicle different force components occur. For example, a payload container, which may have any shape, mounted on a frame on supports. When loading and unloading a vehicle with a payload or during the movement of the vehicle, force vectors act on the supports in different directions and with different force components. The struts transmit the corresponding force components to the cross brace, which deforms along its longitudinal axis and in its cross-section, absorbing energy that acts without cross-bracing on axle body of the vehicle and contribute to the destabilization of the vehicle and lead to fatigue loss and cracks in the components can.

The disadvantage here is that the known cross brace only fits in each case to a specific axle geometry and therefore must be designed differently for each axle geometry. Because of the materials used uniformly for all components of the known cross bracing unit, it is solid and accordingly heavy.

The present invention is therefore based on the object to provide a uniform cross-member device that allows a variable connection of the cross brace to recordings of different axle manufacturers to ensure safe transmission of acting on the images force components from the supports to the cross brace. Furthermore, a cross-member device is to be provided which is designed in its material composition and shape design in such a way that the lowest possible inherent weight can be achieved with the highest possible absorption potential.

3. Summary of the invention

The present invention solves the problem by a cross-member device according to the features of independent claim 1 and by a vehicle frame according to the features of claim 13. Preferred embodiments can be found in the dependent claims.

The present invention relates to a transverse support device for a vehicle, in particular for a utility vehicle, transport vehicle and the like, comprising a first connecting portion, a second connecting portion and a connecting element which is formed between the two connecting portions. The first connecting portion is connected to a first connecting device and the second connecting portion is positively connected to a second connecting device in each case with the connecting element. The first and second connecting portions each have a first positive locking profile. The first connection device and the second connection device each have a second form-fitting profile. During assembly of the first connection device with the first connection section, the first form-fitting profile of the connection section and the second form-fitting profile of the first connection device join together. Advantageously, the first and second connection device each have a connection section, a connection plate and a counterplate. The Anbiridungsabschnitt the connection device can be connected to a fastener, in particular an axle, support or strut. Preferably, the connecting portion and the terminal plate of each connecting device is formed in one piece. The connection plate and the counterplate of the connection device form the second form-fitting profile. The positive connection is provided by the connecting portion, the terminal plate and the counter plate of the connecting device. The transverse support device is in particular an axle support transverse support.

The separate configuration of the connecting sections and the connecting devices of the claimed cross bracing device offers the advantage according to the invention that a uniform connection fastening elements for coupling to axle springs, or to axle brackets different axle manufacturer can be provided by the connection devices, which costs can be saved. Furthermore, a fast and reliable final assembly can be provided. Due to the positive connection of the connecting devices with the connecting portions, force components introduced into a chassis can be picked up by the transverse carrier device substantially without frictional losses, without material damage occurring, whereby a safe and stable ride is made possible. The positive connection can be fixed in particular by riveting and / or screwing or the like.

The crossbeam device preferably comprises elements made of fiber-reinforced plastic, in particular of carbon-fiber-reinforced plastic. Fiber-reinforced plastic is understood to mean a material that consists of reinforcing fibers and a plastic matrix. The matrix surrounds the fibers which are bonded to the matrix by adhesive or cohesive forces. By carbon fiber reinforced plastic is meant a fiber-plastic composite material in which carbon fibers, in particular in several layers, are embedded as reinforcement in a plastic matrix. Through the use of fiber materials, the fiber-plastic composites have a direction-dependent elasticity behavior. Fiber-plastic composites have in particular high specific stiffnesses and strengths. The design of the connecting element and / or the connecting sections made of fiber-reinforced plastic, in particular carbon fiber reinforced plastic, a weight reduction of the vehicle can be achieved, which transported higher payloads and fuel costs can be saved.

In a preferred embodiment, the connecting element has a core, which is at least partially coated with fiber-reinforced plastic, in particular carbon fiber reinforced plastic, in particular wound. The core can advantageously consist of a profile body which is full or hollow in cross-section and in particular has a square, rectangular, oval, circular shape, or a cross, L, T, multiple L or multiple T profile or consist of a foam body. The profile body comprises a lightweight carrier material and may for example consist of plastic, metal or another material which has sufficient strength for applying the fiber-reinforced plastic. It is preferred that the core consists of foamed material. In particular, the core may comprise a foamed metal or a foamed plastic. Advantageously, the core is wrapped with fiber-reinforced plastic. Preferably, the first connecting portion and the second connecting portion include glass fiber reinforced plastic. By such embodiments, a reduction of the total weight can be made possible and high specific stiffness and strength can be achieved.

Preferably, a positive locking profile, which forms the positive connection, a trapezoidal shape, a wedge shape or a waveform. The positive connection profile can advantageously in a preferred direction, z. B. in the vertical direction, d. H. in the direction from the payload container to the roadway, or even horizontally, d. H. extend in the direction of the longitudinal axis of the connecting element. In a further advantageous embodiment of the invention, the positive locking profile runs with a crosswise orientation and thereby forms a rib structure.

It is preferred that the side walls of the first and second connecting portion and the corresponding connecting surfaces of the connecting plates have mating positive locking profiles with horizontal and / or vertical preferred direction, in particular ribs or the like.

Advantageously, the first connection section and the second connection section have a positive connection profile, in particular a taper. Furthermore, it is advantageous that the first connection device has a first connection section, a first connection plate and a first counterplate, and the second connection device has a second connection section, a second connection plate and a second counterplate. As an alternative to the counter plate, individual plates or washers can be used. It is advantageous that the connection portion is formed with the connection plate in one piece. Each connection section of the connection device can be connected to a fastening element, in particular a strut or axle support from different manufacturers. In particular, the connection portion can be welded, riveted or screwed to the fastening element. The connection plates and the counter plates of the connection devices and the connection sections have, for example, through openings through which fastening means such as screws and / or rivets can be inserted, whereby a positive connection can be fixed. Advantageously, the connection plates and / or counter plates of the connection device at least in some areas on bends. By this embodiment, in particular an optimized power transmission is possible.

It is advantageous that the first connection device with a first fastening element of different shape and nature and the second connection device with a second fastening element of different shape and nature are connectable. The first and second fastening element is in particular a strut or support. Preferably, the first fastening element is connectable to a first longitudinal member and the second fastening element is connectable to a second longitudinal member of a vehicle frame. In particular, the fastening element can be connected to the side member via screw connections or the like. For this purpose, the fastening elements preferably have passage openings through which screws can be guided. Alternatively, fasteners and side members can be connected elsewhere, for. B. by welding or riveting. The fasteners also serve the coupling of the cross member device and axle body.

In a preferred embodiment, the first and the second connection device and / or the first and the second fastening element comprise aluminum, in particular an aluminum alloy. By this configuration, a weight reduction of the vehicle can be achieved, whereby higher payloads transported and fuel costs can be saved in the movement of the vehicle. The combination of the connecting devices and / or fastening devices made of a lightweight material, such as aluminum or aluminum alloy, and the design of the cross-member device made of a fiber-reinforced plastic, in particular carbon fiber reinforced plastic weight optimization can be provided according to the invention. Furthermore, a secure transmission of the forces acting on the supports force components can be ensured by the supports on the cross-bracing without causing material degradation of the components.

In a further preferred embodiment, the first fastening element and the second fastening element contain fiber-reinforced plastic, in particular carbon fiber-reinforced plastic. Furthermore, it is preferred that the first connection device and the second connection device contain fiber-reinforced plastic, in particular carbon fiber-reinforced plastic. By such a configuration, a weight reduction of the vehicle can be achieved, whereby higher payloads transported and fuel costs can be saved. Furthermore, fiber-reinforced plastics have in particular high specific stiffnesses and strengths. Furthermore, mechanical and thermal properties of fiber reinforced plastics can be adjusted via a variety of parameters.

In an advantageous embodiment, at least one bracket is formed between the first and second side members, wherein a first end portion of the at least one console is connectable to the first side member and the first attachment member and a second end portion of the bracket is connectable to the second side member and the second attachment member , The connection of the at least one console is preferably carried out by means of a frictional connection, which is formed in particular by a plurality of screw connections as connection points. Alternatively and / or additionally, however, can also be the connection of the console via a positive connection, in particular by riveting and / or welding or the like.

In a preferred embodiment, a top plate is attached to each fastener attachable, which is connectable to the longitudinal member, in particular screwed.

When driving and loading occurring static and dynamic force components between payload, side member and axle body can thus be transferred due to the inventive arrangement of form fit friction and regardless of the material of the components connected via farm conclusions, or introduced into the cross member and taken from this. The arrangement according to the invention of the form-fit connections makes it possible to connect different materials to one another via connection devices according to the invention and thus also to couple highly elastic and lightweight materials of the cross-support device with conventional components from different manufacturers.

4. Brief description of the accompanying figures

Hereinafter, aspects of the present invention will be explained in detail with reference to the accompanying drawings.

These figures show:

1 : A perspective view of a preferred embodiment of a connecting element having a first and second connecting portion according to the present invention;

2 FIG. 2 is a schematic diagram of a preferred embodiment of a cross member according to the present invention; FIG.

3 a side view of another preferred embodiment of the cross-member device according to the present invention;

4 : a partial perspective view of 3 .

5a : another partial perspective view of 3 ;

5b FIG. 3 is a sectional view of the partial perspective view of FIG 5a along the line AA;

6 a perspective view of a preferred embodiment of a connection device and a fastener of the present invention;

7 Fig. 3 is a side view of a preferred embodiment of a vehicle frame for a utility vehicle of the present invention; and

5. Detailed description of preferred embodiments

In the following, currently preferred embodiments of the present invention will be explained in more detail with reference to the accompanying figures.

1 shows a perspective view of a preferred embodiment of a connecting element 40 with a first connecting section 20 and a second connecting portion 30 according to the present invention. The connecting element 40 has a core 45 formed from a profile body having in cross section in particular a hollow or full square, rectangular, oval, circular shape or a cross, L, T, multiple L or multiple T-profile, or formed from a foam body is. In particular, the core can 45 a foamed metal or a foamed plastic. The core 45 is coated with a fiber-reinforced plastic, in particular carbon fiber reinforced plastic, wrapped and / or wrapped. The connecting element 40 has a curvature. However, the connecting element can also have different configurations. In the first connection section 20 and second connecting portion 30 is advantageously under the fiber structure a stable core, in particular a glass fiber core and / or metal core incorporated to secure attachment of a connection device, which in 1 is not shown to ensure and material degradation of the connecting sections 20 . 30 to avoid. The configuration and shape of the connecting sections 20 . 30 is variable. In particular, the connecting sections 20 . 30 have a positive connection profile, which allows a positive connection. The form-fitting profile may in particular be a trapezoidal shape, a wedge shape or a wave shape. In the first connection section 20 are holes 21 and in the second connection section 30 are holes 31 provided to connect with terminal plates in 1 are not shown to allow.

2 shows a schematic diagram of a preferred embodiment of a cross member device 10 according to the present invention. The crossbar device 10 includes a first connection portion 20 , a second connecting portion 30 and a connecting element 40 which is between the two connecting sections 20 . 30 is trained. The connecting element 40 , the first connecting section 20 and the second connection portion 30 form a so-called cross-bracing. The first connection section 20 and the second connection portion 30 have a positive connection profile. The first connection section 20 is with a first connection device 50 and the second Connecting portion is connected to a second connecting device 60 positively connected. The first connection device 50 can be attached to a first fastener 70 and the second connection device 60 can with a second fastener 80 get connected. On the first fastener 70 and on the second fastener 80 are in particular axle components 75 and 85 mountable. Further, on the first fastener 70 and second fastening element 80 Struts or longitudinal shots 76 and 86 be attached. On the struts or longitudinal views 76 and 86 in particular, a payload container 150 be attached.

3 shows a front view of another preferred embodiment of the cross member device 10 according to the present invention. Identical components are provided with the same reference numerals. The crossbar device 10 is in 3 shown in the installed state. The first connection section 20 is with a first connection device 50 and the second connection portion 30 is with a second connection device 60 positively connected. The connecting sections 20 . 30 have a positive connection profile. The first connection device 50 has a connection plate 51 , a counter-plate 52 , in the 3 not shown, and a connection section 56 on. The connection plate 51 and the counter-plate 52 have a configuration that is substantially the shape of the positive connection profile of the first connecting portion 20 equivalent. The connection section 56 the first connection device 50 is with a first fastener 70 connected, in particular welded. The first fastening element 70 and the first connection device 50 include aluminum, preferably an aluminum alloy. At the first fastening element 70 is a headstock 110 attached. A first side member 90 is with the top plate 110 of the first fastener 70 connected, for example by means of a screw connection and / or riveted connection. The first fastening element 70 but can also directly to the first side member 90 be connected by welding. The second connection device 60 has a connection plate 61 , a counter-plate 62 , in the 3 not shown, and a connection section 66 on. The shape of the connection plate 61 the second connection device 60 corresponds substantially to the shape of the positive connection profile of the second connecting portion 30 , The connection section 66 the second connection device 60 is with a second fastener 80 connected, in particular welded. The second fastening element 80 and the second connection device 60 include aluminum, preferably an aluminum alloy. On the second fastening element 80 is a headstock 120 attached. A second side member 100 is with the top plate 120 of the second fastening element 80 connected, for example by means of a screw connection and / or riveted connection. The second fastening element 80 but also directly to the second side member 100 be connected by welding. Between the first side member 90 and the second side member 100 is a console 130 attached. The console 130 serves as a link between a payload container, in particular a tank, and the chassis construction. The console 130 includes aluminum, in particular an aluminum alloy.

4 shows a partial perspective view of 3 , Identical components are provided with the same reference numerals. The connection plate 51 and the counter-plate 52 the first connection device 50 and the first connection section 20 the crossbar device 10 have openings or holes 53 , The connection plate 51 and the counter-plate 52 have at least partially plate edges, in particular folds on. With the help of fasteners such as screws and / or rivets in 4 not shown, a positive connection between the connection plate 51 , the counter plate 52 and the first connection portion 20 the crossbar device 10 getting produced. The connection section 56 the first connection device 50 can have different shapes and configurations and in particular to different shapes and configurations of the first fastener 70 , to be adapted by, for example, different axle manufacturers. The above description of the in 4 shown components is on the second connecting portion 30 , the second connection device 60 and the second fastening element 80 accordingly transferable.

5a shows a further partial perspective view of 3 and 5b shows a sectional view of the partial view of 5a along the line AA. Identical components are provided with the same reference numerals. From the sectional view of 5b is the positive connection between the connection section 20 . 30 , the connection plate 51 . 61 and the counter-plate 52 . 62 the connection device 50 . 60 refer to. The positive connection is not on the in 5 limited shape shown. The form-fitting profile, which forms the positive connection, may in particular have a wedge shape, a trapezoidal shape or a wave shape.

6 shows a perspective view of an embodiment of a connection device 50 . 60 and a fastener 70 . 80 of the present invention. Identical components are provided with the same reference numerals. The connection plate 51 and the counter-plate 52 the first connection device 50 show holes 53 on. The connection section 56 the first connection device 50 is essentially a U-profile, which conforms to the shape of the first fastener 70 can be adjusted. The connection section 56 and the first fastening element 70 are connected to each other, in particular welded together.

7 shows a schematic side view of an embodiment of a vehicle frame for a commercial vehicle of the present invention. Identical components are provided with the same reference numerals. The first side member 90 is with the top plate 110 of the first fastener 70 screwed. Several consoles 130 are with the first side member 90 connected. The consoles 130 serve for load absorption. For example, the consoles are used 130 for holding a tank container, which can transport liquids and / or gases.

In addition to the illustrated embodiments, it will be apparent to those skilled in the art that the invention is not limited to the illustrated positive connections, but other positive connections between the connecting portions and the connection devices are conceivable. Furthermore, the cross-member device may have different shapes and configurations. In particular, the transverse support device may have a curved or a substantially straight configuration. Furthermore, it will be apparent to those skilled in the art to combine various preferred embodiments.

Claims (13)

Crossmember device ( 10 ) for a vehicle, in particular for a commercial vehicle, transport vehicle and the like, comprising a first connecting section ( 20 ), a second connecting section ( 30 ) and a connecting element ( 40 ), which between the two connecting sections ( 20 . 30 ), the first connection section ( 20 ) with a first connection device ( 50 ) and the second connection section ( 30 ) with a second connection device ( 60 ) are positively connected, characterized in that the first connecting portion ( 20 ) and / or the connecting element ( 40 ) and / or the second connection section ( 30 ) contains fiber reinforced plastic. Crossmember device ( 10 ) according to claim 1, characterized in that the first connecting section ( 20 ) and the second connection section ( 30 ) have a positive connection profile. Crossmember device ( 10 ) according to one of the preceding claims, characterized in that the connecting element ( 40 ) a core ( 43 ), which is at least partially coated with fiber-reinforced plastic. Crossmember device ( 10 ) according to one of the preceding claims, characterized in that the first connecting section ( 20 ) and the second connection section ( 30 ) contains glass fiber reinforced plastic. Crossmember device ( 10 ) according to one of the preceding claims, characterized in that the first connection device ( 50 ) and the second connection device ( 60 ) each have a connection plate ( 51 . 61 ), a counter-plate ( 52 . 62 ) and a connection section ( 56 . 66 ) having. Crossmember device ( 10 ) according to one of the preceding claims, characterized in that the first connecting section ( 20 ) and / or the second connection section ( 30 ) and / or the connection plate ( 51 . 61 ) and / or the counter plate ( 52 . 62 ) is at least partially provided with ribs / are. Crossmember device ( 10 ) according to one of the preceding claims, characterized in that the connection section ( 56 ) of the first connection device ( 50 ) with a first fastening element ( 70 ) and the connection section ( 66 ) of the second connection device ( 60 ) with a second fastening element ( 80 ) is connectable. Crossmember device ( 10 ) according to one of the preceding claims, characterized in that the first fastening element ( 70 ) with a first side member ( 90 ) and the second fastening element ( 80 ) with a second side member ( 100 ) is connectable. Crossmember device ( 10 ) according to one of the preceding claims, characterized in that between the first ( 90 ) and second side members ( 100 ) a console ( 130 ), wherein a first end region ( 131 ) of the console ( 130 ) with the first side member ( 90 ) and the first fastening element ( 70 ) is connectable and a second end region ( 132 ) of the console ( 130 ) with the second side member ( 100 ) and the second fastening element ( 80 ) is connectable. Crossmember device ( 10 ) according to one of claims 1 to 9, characterized in that the first ( 70 ) and / or the second fastening element ( 80 ) contains fiber reinforced plastic. Crossmember device ( 10 ) according to one of claims 1 to 9, characterized in that the first ( 50 ) and / or the second connection device ( 60 ) contains fiber reinforced plastic. Crossmember device ( 10 ) according to one of claims 1, 3, 10 or 11, characterized in that the fiber-reinforced plastic is a carbon fiber reinforced plastic. Vehicle frame of a commercial vehicle, comprising a first ( 90 ) and second side members ( 100 ), between which at least one console ( 130 ), wherein a first end region ( 131 ) of the at least one console ( 130 ) with the first side member ( 90 ) and a first fastening element ( 70 ) is connectable and a second end region ( 132 ) of the console ( 130 ) with the second side member ( 100 ) and a second fastening element ( 80 ), characterized in that between the first ( 70 ) and second fastening element ( 80 ) a cross member ( 10 ) is designed according to one of claims 1 to 12.

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