Wheel set intermediate frame for a rail vehicle

Abstract

A wheel set intermediate frame for a rail vehicle includes a plurality of mounting interfaces for chassis components at predetermined positions. Part of the wheel set intermediate frame for a rail vehicle is also at least one defined mounting interface for fixing to a subframe of a car body of a rail vehicle. A rail vehicle and a method for producing a wheel set intermediate frame for a rail vehicle are also provided.

Claims

1. A rail vehicle wheel set intermediate frame for mounting a wheel set without a bogie frame on a sub-frame of a car body of a rail vehicle, the wheel set intermediate frame comprising: longitudinal frame members each having a mounting interface for engaging against a respective longitudinal member of the sub-frame and fixedly mounting the intermediate frame to the sub-frame; a plurality of mounting interfaces disposed at predetermined positions for chassis components; said plurality of mounting interfaces including a mounting interface for a wheel set guide, the wheel set guide configured to transmit longitudinal forces between the wheel set and the wheel set intermediate frame and to guide the wheel set on a track; and said plurality of mounting interfaces including a mounting interface for a braking device, the braking device positioned exactly relative to wheels of the wheel set to develop a braking effect.

2. The rail vehicle wheel set intermediate frame according to claim 1, wherein said plurality of mounting interfaces includes a mounting interface for a drive suspension, the drive suspension including supporting elements for components for traction of the rail vehicle.

3. The rail vehicle wheel set intermediate frame according to claim 1, wherein said plurality of mounting interfaces includes a mounting interface for a damping unit, the damping unit having a hydraulic or mechanical damping element in contact with an axle suspension.

4. The rail vehicle wheel set intermediate frame according to claim 1, wherein the rail vehicle wheel set intermediate frame is smaller than the car body.

5. A rail vehicle, comprising a rail vehicle wheel set intermediate frame according to claim 1.

6. The rail vehicle wheel set intermediate frame according to claim 1, further comprising cross frame members connected between said longitudinal frame members.

7. The rail vehicle wheel set intermediate frame according to claim 1, wherein said plurality of mounting interfaces includes a suspension mounting interface for a drive suspension, the drive suspension is connected between said suspension mounting interface and an axle bearing and said drive suspension including supporting elements for components for traction of the rail vehicle.

8. The rail vehicle wheel set intermediate frame according to claim 1, wherein said plurality of mounting interfaces includes a suspension mounting interface for a drive suspension, said suspension mounting interface being on an underside of said longitudinal frame member opposite said mounting interface.

9. A rail vehicle wheel set intermediate frame for mounting a wheel set without a bogie frame on a sub-frame of a car body of a rail vehicle, the wheel set intermediate frame comprising: longitudinal frame members having mounting interfaces for fixedly mounting the intermediate frame to the sub-frame; a plurality of component mounting interfaces disposed at predetermined positions for chassis components; said plurality of component mounting interfaces including a wheel set guide component mounting interface for a wheel set guide, the wheel set guide configured to transmit longitudinal forces between the wheel set and the wheel set intermediate frame and to guide the wheel set on a track; and said plurality of component mounting interfaces including a braking component mounting interface for a braking device, the braking device positioned exactly relative to wheels of the wheel set to develop a braking effect, said braking component mounting interface being arranged on an underside of said longitudinal frame members.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

(1) FIG. 1 shows a schematic side view of a rail vehicle having one or more wheel set intermediate frames according to an exemplary embodiment of the invention,

(2) FIG. 2 shows a plan view of the rail vehicle shown in FIG. having one or more wheel set intermediate frames according to an exemplary embodiment of the invention,

(3) FIG. 3 shows a flow chart which illustrates a method for producing a rail vehicle wheel set intermediate frame according to an exemplary embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

(4) FIG. 1 shows a schematic side view of a lower region of a railway vehicle 10 having a rail vehicle wheel set intermediate frame 2, also designated as a wheel set intermediate frame or intermediate frame for short, according to an exemplary embodiment of the invention. The railway vehicle 10 has a car body with a sub-frame 3, which is used as a load-bearing structure both for a chassis and for structures. The sub-frame has so-called longitudinal members 3a, to which the wheel set intermediate frames 2 are fixed at interfaces 2c. Such a wheel set intermediate frame 2 has a multiplicity of further interfaces 4a, 4b, 4c, 4d, 4e, on which different chassis components 5, 6, 7, 8, 9 are mounted. The multiplicity of further interfaces 4a, 4b, 4c, 4d, 4e, include a mounting interface 4a, 4b, 4c for a wheel set guide that includes spring/suspension elements 5, a shock absorber 6 and a longitudinal follower 8. The wheel set guide is used to transmit the longitudinal forces between the wheel set and the wheel set intermediate frame 2 and to guide the wheel set in the track. Spring elements 5 are fixed by a first end 5a to suspension interfaces 4a of the wheel set intermediate frame 2. A second end 5b of the suspension elements 5 is connected to an axle bearing 7a. The suspension element 5 is supplemented by a shock absorber 6 which, for example, is arranged between the two suspension elements 5 of a wheel 1, viewed from the side. The shock absorber 6 damps an oscillatory behavior of the suspension elements 5 in order thus to maintain an uninterrupted contact of the wheels 1 with a rail. The shock absorbers 6 are each mounted by one end on a shock absorber interface 4b of the wheel set intermediate frame 2 and are connected by a second end to an axle bearing 7a. The wheel set, comprising axles 7 and wheels 1, is stabilized in the longitudinal direction by a so-called longitudinal follower 8. The longitudinal follower 8 has, for example, a rod 8a, of which one end 8b is connected to the axle bearing 7a of a wheel 1, and its second end 8c is connected to a longitudinal follower support 4c. The longitudinal follower support 4c is in turn fixed to the wheel set intermediate frame 2. Furthermore, a disk or block brake 9 is connected to the wheel set intermediate frame 2 via a brake interface 4d. Also indicated in FIG. 1 is a drive interface 4e, which is likewise mounted on the intermediate frame 2.

(5) FIG. 2 illustrates a plan view of the railway vehicle 10 shown in FIG. 1 having one or more wheel set intermediate frames 2 according to an exemplary embodiment of the invention. The wheel set intermediate frame 2 has longitudinal members 2a and cross-members 2b, which are connected via interfaces 2c to the longitudinal members 3a of the sub-frame 3 for fixing the wheel set intermediate frame 2 to the sub-frame 3. Arranged on the longitudinal members 2a of the wheel set intermediate frame 2 are interfaces 4a for the spring element 5 of the axle supports 7a (see FIG. 1). Furthermore, interfaces 4b for shock absorbers 6 are arranged between the (see FIG. 1) aforementioned interfaces 4a for the spring elements 5. Interfaces 4c for the longitudinal followers 8 are arranged in the transition region between the longitudinal members 2a and the cross-member 2b of the wheel set intermediate frame 2. Interfaces 4d for the disk or block brakes 9 are positioned on the cross-members 2a of the wheel set intermediate frame 2.

(6) FIG. 3 shows a flowchart 300 which illustrates a possible method for producing a rail vehicle wheel set intermediate frame according to an exemplary embodiment of the invention. In step 3.I, first of all the longitudinal members 2a and cross-members 2b are joined together to form a frame. In step 3.II, a plurality of mounting interfaces 4a, 4b, 4c, 4d, 4e for chassis components is arranged at predefined positions of the rail vehicle wheel set intermediate frame 2. For example, mounting interfaces 4a for axle suspension elements 5 are arranged on the longitudinal members of the rail vehicle wheel set intermediate frame 2. Likewise, mounting interfaces 4b for dampers 6 are formed between the mounting interfaces 4a for axle suspension elements 5 on the longitudinal members 2a of the rail vehicle wheel set intermediate frame 2. In addition, interfaces 4c for fixing the longitudinal followers 8 are arranged at the corner points of the rail vehicle wheel set intermediate frame 2. Furthermore, interfaces 4d for the fixing of braking elements 9 are also formed on the cross-members 2b of the rail vehicle wheel set intermediate frame 2. Finally, interfaces 4e for the fixing of drive elements to the rail vehicle wheel set frame 2 can also be formed. In step 3.III, defined mounting interfaces 2c for fixing the wheel set intermediate frame 2 to a sub-frame 3 of a rail vehicle 10 are formed on the rail vehicle wheel set intermediate frame 2. In step 3.IV, finally, the previously arranged interfaces are machined if necessary to produce the required dimensions relative to one another.

(7) In conclusion, it is pointed out once more that the above-described methods and devices are merely preferred exemplary embodiments of the invention and that the invention can be varied by those skilled in the art without leaving the scope of the invention, to the extent to which it is predefined by the claims. For completeness, it is also pointed out that the use of the indefinite article a or one does not exclude the relevant features also being present several times.

LIST OF DESIGNATIONS

(8) 1 Wheel 2 Wheel set intermediate frame 2a Longitudinal member of the wheel set intermediate frame 2b Cross-member of the wheel set intermediate frame 3 Sub-frame of the car body 3a Longitudinal support of the sub-frame 4a Suspension interface 4b Damper interface 4c Longitudinal follower support 4d Brake interface 4e Drive interface 5 Suspension 5a First end 5b Second end 6 Shock absorber 7 Axle 7a Axle bearing 8 Longitudinal follower 8a Rod 9 Block brake 10 Railway vehicle