CH686945A5

CH686945A5 - Superstructure mounting on lorry chassis

Info

Publication number: CH686945A5
Application number: CH9993A
Authority: CH
Inventors: Marcel Baldinger
Original assignee: Marcel Baldinger
Priority date: 1993-01-14
Filing date: 1993-01-14
Publication date: 1996-08-15

Abstract

The beam (30) of the superstructure is secured to that (1) of the chassis, the latter beam being cut off at a point clear of the cab rear wall (3). A first profiled steel reinforcing member (10) is inserted in the chassis beam until its forward end is below the cab floor, and is welded in place via holes (13). A second such reinforcing member (20) is welded onto the outside of the beam behind the rear wall, and the superstructure beam is joined to the second member. The first member can incorporate a rectangular-section tube (11), onto which a shorter channel-section (12) is welded, this extending in front of the cab rear wall.

Description

       

  
 



  Bei Nutzfahrzeugen werden häufig die Aufbauten hinter der Fahrerkabine individuell nach Kundenwunsch von Carrosseriewerkstätten hergestellt. Die Aufbauten sind damit besser an die individuellen Bedürfnisse des Kunden angepasst. 



  In der Gewichtsklasse unter 3,5 t werden von Fahrzeugproduzenten Fahrzeuge angeboten, welche ein Chassis mit vier Rädern und eine darauf aufgebaute Fahrerkabine umfassen. Um die Nutzlast und/oder die Fahrzeuglänge zu vergrössern, ist es bekannt, bei solchen Fahrzeugen die beiden Chassis-Tragbalken bei der Rückwand der Fahrerkabine durchzutrennen und andere FahrzeugaufbauTräger anzubauen. 



  Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Verbinden solcher Träger mit den Chassis-Tragbalken anzugeben, die hoch belastbar und unaufwendig in der Herstellung ist. Diese Aufgabe wird durch die kennzeichnenden Merkmale der Ansprüche gelöst. 



  Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnungen erläutert. Darin zeigt: 
 
   Fig. 1 eine Seitenansicht, teilweise im Schnitt, 
   Fig. 2 eine schematische Draufsicht, 
   Fig. 3 einen Querschnitt längs der Linie III-III in Fig. 1 und 
   Fig. 4 eine Seitenansicht eines Verstärkungsprofiles. 
 



  In Fig. 1 und 2 ist schematisch der Vorderteil eines Nutzfahrzeuges dargestellt. Es besteht aus einer auf zwei Chassis-Tragbalken 1 aufgebauten Fahrerkabine 2 mit einer Rückwand 3. Die Tragbalken 1 sind etwa 80 cm hinter der Rückwand 3, hinter einem sie verbindenden Querträger 4 abgeschnitten. Wie aus Fig. 3 hervorgeht, bestehen die Tragbalken 1 hinter der Rückwand 3 und im Bereich unmittelbar davor aus zwei übereinandergeschweissten Hutprofilen 5, 6. Im Kabineninnenraum trägt die Oberseite des unteren Hutprofils 6 den Kabinenboden 7. 



  In den Innenraum der Tragbalken 1 ist je ein inneres Verstärkungsprofil 10 eingesetzt, bestehend aus einem längeren, vorn schräg abgeschnittenen und eingekeilten Rechteckrohr 11 und einem in der Mitte im Bereich der Rückwand 3 darauf aufgeschweissten U-Profil 12. Das Verstärkungsprofil 10 ist auf seiner ganzen Länge mit Lochschweissungen 13 mit dem Tragbalken 1 verschweisst. Weil das Verstärkungsprofil 10 im Innenraum des Tragbalkens 1 angeordnet ist, erfordert sein Einbau keine Demontage und Anpassung anderer um den Tragbalken 1 herum angeordneter Bauteile. Daher ist das Verstärkungsprofil 10 einfach zu montieren. Das Verstärkungsprofil 10 hat an der Stelle der grössten Biegebeanspruchung, nämlich in der Gegend der Rückwand 3, das grösste Flächenträgheitsmoment. 



  Hinter der Rückwand 3 ist auf die Aussenseite der Tragbalken 1 ein zweites, als U-Profil ausgebildetes Verstärkungsprofil 20 von aussen aufgeschweisst. Das Profil 20 hat einen vertikalen Steg 21 und zwei horizontale, den Tragbalken 1 umgreifende und mit diesem verschweisste Schenkel 22. Am Steg 21 sind auf der dem Tragbalken 1 zugewandten Seite mehrere Gewindeplatten 23 angeschweisst. Auf den Gewindeplatten 23 sind Träger 30 für einen Fahrzeugaufbau mittels Schrauben 31 angeschraubt. Die Trä ger 30 sind Aluminiumprofile mit einem vertikalen Steg 32, einem horizontalen, symmetrisch zum Steg 32 angeordneten oberen Gurt 33 und einem unteren Gurt 34, der nur einseitig vom Steg 32 absteht. 



   An den Trägern 30 werden die Hinterachsen sowie der Aufbau je nach Kundenwunsch montiert. Je nach gewünschter Fahrzeuglänge und Traglast können die Träger 30 verschieden hoch und lang sein. 



  Die beschriebene Verbindungsvorrichtung ist hoch belastbar und einfach in der Montage. 



  
 



  In commercial vehicles, the bodies behind the driver's cabin are often manufactured individually by car body shops according to customer requirements. The bodies are therefore better adapted to the individual needs of the customer.



  In the weight class under 3.5 t, vehicle manufacturers offer vehicles that include a chassis with four wheels and a driver's cabin built on them. In order to increase the payload and / or the length of the vehicle, it is known to cut the two chassis support beams on the rear wall of the driver's cab in such vehicles and to add other vehicle body supports.



  The present invention has for its object to provide a device for connecting such carriers to the chassis support beam, which is highly resilient and inexpensive to manufacture. This object is achieved by the characterizing features of the claims.



  An exemplary embodiment of the invention is explained below with reference to the drawings. It shows:
 
   1 is a side view, partly in section,
   2 is a schematic plan view,
   Fig. 3 shows a cross section along the line III-III in Fig. 1 and
   Fig. 4 is a side view of a reinforcement profile.
 



  1 and 2, the front part of a commercial vehicle is shown schematically. It consists of a driver's cab 2 with a rear wall 3 built on two chassis support beams 1. The support beams 1 are cut off about 80 cm behind the rear wall 3, behind a cross member 4 connecting them. As can be seen from FIG. 3, the support beams 1 behind the rear wall 3 and in the area directly in front of them consist of two welded hat profiles 5, 6. In the cabin interior, the top of the lower hat profile 6 supports the cabin floor 7.



  In the interior of the supporting beams 1, an inner reinforcement profile 10 is inserted, consisting of a longer rectangular tube 11 cut and wedged in at the front and a U-profile 12 welded onto it in the middle in the area of the rear wall 3. The reinforcement profile 10 is all over Length welded with hole welds 13 to the supporting beam 1. Because the reinforcement profile 10 is arranged in the interior of the support beam 1, its installation does not require disassembly and adaptation of other components arranged around the support beam 1. Therefore, the reinforcement profile 10 is easy to assemble. The reinforcement profile 10 has the greatest area moment of inertia at the location of the greatest bending stress, namely in the area of the rear wall 3.



  Behind the rear wall 3, a second reinforcement profile 20 designed as a U-profile is welded from the outside onto the outside of the supporting beams 1. The profile 20 has a vertical web 21 and two horizontal legs 22, which embrace the supporting beam 1 and are welded to it. A plurality of threaded plates 23 are welded to the web 21 on the side facing the supporting beam 1. Carriers 30 for a vehicle body are screwed onto the threaded plates 23 by means of screws 31. The Trä ger 30 are aluminum profiles with a vertical web 32, a horizontal, symmetrical to the web 32 arranged upper belt 33 and a lower belt 34 which protrudes only on one side from the web 32.



   The rear axles and the body are mounted on the brackets 30 as required by the customer. Depending on the desired vehicle length and load capacity, the carriers 30 can be of different heights and lengths.



  The connecting device described is highly resilient and easy to assemble.

Claims

1. Device for connecting a vehicle body support (30) to a chassis support beam (1) of a commercial vehicle, characterized in that the support beam (1) is cut off at a distance behind the rear wall (3) of the driver's cab (2), that in a first reinforcement profile (10) made of steel is inserted into the support beam (1) in such a way that its front end lies under the cabin floor (7) such that the first reinforcement profile (10) is welded to the support beam (1) by means of welded holes (13), that behind the cabin rear wall (3) on the outside of the support beam (1) a second reinforcement profile (20) is welded, and that the vehicle body support (30) is connected to this second reinforcement profile (20).

2. Device according to claim 1, characterized in that the first reinforcing profile (10) comprises a square tube (11).

3rd

Apparatus according to claim 2, characterized in that a U-profile (12) is welded onto the square tube (11), which is shorter than the square tube (11) and which projects up to the rear wall of the cabin (3).

4. Device according to one of claims 1-3, characterized in that the second reinforcing profile (20) is a U-profile, which is welded to the top and bottom of the support beam (1).

5. The device according to claim 4, characterized in that on the second reinforcement profile (20) threaded plates (23) are welded, and that the vehicle body support (30) is screwed to these threaded plates (23). 1. Device for connecting a vehicle body support (30) to a chassis support beam (1) of a commercial vehicle, characterized in that the support beam (1) is cut off at a distance behind the rear wall (3) of the driver's cab (2), that in a first reinforcement profile (10) made of steel is inserted into the support beam (1) in such a way that its front end lies under the cabin floor (7) such that the first reinforcement profile (10) is welded to the support beam (1) by means of welded holes (13), that behind the cabin rear wall (3) on the outside of the support beam (1) a second reinforcement profile (20) is welded, and that the vehicle body support (30) is connected to this second reinforcement profile (20). 2. Device according to claim 1, characterized in that the first reinforcing profile (10) comprises a square tube (11). 3rd

Apparatus according to claim 2, characterized in that a U-profile (12) is welded onto the square tube (11), which is shorter than the square tube (11) and which projects up to the rear wall of the cabin (3). 4. Device according to one of claims 1-3, characterized in that the second reinforcing profile (20) is a U-profile, which is welded to the top and bottom of the support beam (1). 5. The device according to claim 4, characterized in that on the second reinforcement profile (20) threaded plates (23) are welded, and that the vehicle body support (30) is screwed to these threaded plates (23).