DE20002265U1 - Floor structure for vehicles, in particular rail vehicles - Google Patents

Description

Floor construction for vehicles, especially rail vehicles

The invention relates to a floor structure for vehicles, in particular rail vehicles, in which the floor panel is supported on the car body underframe by means of a profile body.

It is generally known to elastically support the floor in the car bodies of rail vehicles using rubber, soft adhesives or other materials. For example, a vibration and sound-damping connecting element for the floors of rail vehicles for passenger transport (DE 44 41 290 C 1) is known, in particular for a two-shell, wood-free floor in a segmental design, in which elastic intermediate members that accommodate adhesives in sections are arranged transversely to the car body underframe between the floor plate and the car body underframe. This solution is characterized in that the elastic connecting element is formed from a profile body lying transversely to the car body, limited in its longitudinal extent by the side wall profiles of the car body, with an elastic adhesive layer applied to the top of the latter, with plate-shaped webs being embedded in the profile body as supports for floor components such as seat frames, handrails, partition walls, climate protection walls, and that, viewed in the longitudinal direction of the car body underframe, elastic spacer strips are arranged to the left and right of the elastic adhesive layer, which both create the distance required for bonding between the profile body and the car body underframe and form a leveled plane for the subsequent floor construction.

This solution has the disadvantage that the necessary surface bonding of the hollow profiles to the body shell can only be used for body shells made from large extruded profiles or integral aluminum. However, the patented solution is problematic for body shells made from steel with longitudinal and transverse body shell supports, which can also have different heights.

The invention specified in the protection claim is based on the problem of creating a floor structure for rail vehicles that provides effective vibration

• · · · φ ■ · &phgr; φ φ · · · φ

enables dampening and tolerance-compensating floor fastening and ensures simple production and assembly.

According to the invention, the object is achieved in that hollow profiles positioned lengthways to the car body are secured in a form-fitting and force-fitting manner on the crossbeams of the undercarriage, whereby a first compensation of height tolerances can be achieved by inserting hard rubber and steel shims between the crossbeams and the hollow profiles, and the floor panels are attached to the hollow profiles using elastic adhesive beads, between or next to which elastic shims are arranged at certain intervals to create a leveled plane for the floor structure and a defined adhesive gap. The advantages of the solution according to the invention are in particular that

- Car body unevenness can be compensated over a large area, depending on the bonding joint tolerances and the clamping length of the rivets, which enables the creation of a levelled surface for the subsequent floor construction, even with larger shell tolerances,

- an improvement in the vibration behaviour of a vehicle with a lightweight steel body shell is observed compared to the conventional floating support of the underbody floor on rubber damping profiles, whereby the long profiles riveted to the body shell cross members counteract the vibration of the body shell,

- a reduction in assembly, manufacturing and construction costs is ensured by eliminating screw connections,

- riveting does not cause any distortion of the support profiles as occurs with the heat input during welding, so that the effort for straightening and additional tolerance compensation is eliminated,

- standardized profiles can be used more cost-effectively and

- bonding enables the use of sandwich panels which, as experience has shown, are difficult to attach by screwing and which meet the requirements for lightweight construction and heat and sound insulation.

The invention will be explained in more detail below using an exemplary embodiment. The drawings show in

Fig. 1: a basic structure of the floor fastening in the front view Fig. 2: a side view according to Fig. 1

Fig. 3 a floor selection with a possible arrangement in plan view

As can be seen from Fig. 1 to 3, the rail vehicle has a steel car body in which the cross members 1 of the underframe are designed as Z-profiles. Rectangular hollow steel profiles 2 are attached to the cross members 1 along the car body using blind rivets 3. The use of hard rubber inserts 4a or steel inserts 4b provides an initial height tolerance compensation. The possible range for tolerance compensation is determined by the clamping length of the blind rivets used (in the example from approx. 9 mm to 16 mm). The hollow profiles 2 have circular openings on the top at the distance from the Z-profiles for inserting the blind rivets 3 including the necessary riveting tools. The floor panel 7, preferably with a floor covering, is held in place by elastic adhesive beads 5 applied to the hollow profiles 2. In order to obtain a level surface for the floor structure and a defined adhesive gap, rubber inserts 6 of appropriate thickness are provided at intervals of approximately 500 mm. These are arranged between the adhesive beads 5 and whose Shore hardness corresponds to the adhesive used. The adhesive joint tolerance range, in the example 4 mm to 15 mm for the bond, is determined by the adhesive used and the requirements for damping. The total area in which height tolerance compensation is possible results from the tolerance range of the adhesive and that of the blind rivets at approximately 18 mm.

List of reference symbols

1 cross member

2 hollow profile

3 blind rivet

4a Hard rubber insert

4b Steel insert

5 Adhesive bead

6 Rubber insert

7 Floor slab with floor covering

Claims (1)

Floor structure for rail vehicles, in which the floor panel is supported on the car body underframe by means of profile bodies, characterized in that hollow profiles ( 2 ) positioned lengthways to the car body are fastened in a form-fitting and force-fitting manner to the cross members ( 1 ) of the underframe, wherein a first compensation of height tolerances can be achieved by introducing shims ( 4 a, 4 b) between the cross members ( 1 ) and the hollow profiles ( 2 ), and the application of the floor panels ( 7 ) to the hollow profiles ( 2 ) takes place via elastic adhesive beads ( 5 ), between or next to which further shims ( 6 ) are arranged at certain intervals to create a levelled plane for the floor structure and a defined adhesive gap.