Device for reducing vibrations of a rail vehicle

Abstract

A device for reducing vibrations of a vehicle, in particular a rail vehicle, wherein the device includes at least a vehicle frame, a brake carrier, a mechanically operative brake unit and a suspension bracket that interconnects the vehicle frame and brake carrier, where the suspension bracket includes at least one element elastically connecting the vehicle frame to the brake carrier that allows movement of the brake carrier in the transverse direction of the vehicle frame in order to dampen vibrations.

Claims

1. A device for reducing vibrations of a vehicle, comprising: at least a vehicle frame; a brake carrier of a mechanically operative brake unit; and a suspension bracket interconnecting the at least one vehicle frame and the brake carrier and including at least one laminated suspension spring forming an elastic element connecting the at least one vehicle frame to the brake carrier, and which permits movement of the brake carrier in a transverse direction of the vehicle frame; wherein the elastic element has a greater elasticity in the transverse direction of the vehicle frame than in the longitudinal direction of the vehicle frame.

2. The device as claimed in claim 1, wherein the laminated suspension spring is attached to an elastically lined bearing bush, which is mounted on a bearing bolt fixedly connected to the vehicle frame in a direction of travel.

3. The device as claimed in claim 1, wherein the suspension bracket comprises a transverse pendulum and the elastic element is configured as a spring/damper element.

4. The device as claimed in claim 1, wherein the suspension bracket comprises a linear guide and the elastic element is configured as a spring/damper element.

5. The device as claimed in claim 1, wherein the brake carrier supports at least one brake caliper for a disk brake.

6. The device as claimed in claim 1, wherein the brake carrier supports at least one brake shoe for a shoe brake.

7. The device as claimed in claim 1, wherein the brake carrier supports at least one hydrodynamic retarder.

8. The device as claimed in claim 1, wherein the suspension bracket engages directly with the brake carrier and the vehicle frame.

9. The device as claimed in claim 1, wherein the suspension bracket includes a damper element.

10. The device as claimed in claim 1, further comprising: at least wheels and wheel axles for formation of a center bogie.

11. The device for reducing vibrations of a vehicle is claimed in claim 1, wherein the vehicle is a rail vehicle.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) To further explain the invention reference is made in the following part of the description to the figures, from which further advantageous embodiments, details and developments of the invention can be taken, in which:

(2) FIG. 1 shows an axonometric view of a section of an device with brake carrier and brake caliper units in accordance with the invention; and

(3) FIG. 2 shows the device of FIG. 1 without a vehicle frame.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

(4) FIG. 1 shows a disk brake 1, which is arranged on the vehicle frame between the longitudinal supports 2 thereof. A disk brake 1 consists of one or in this case several brake disks 4 connected to the wheel axle 3, and of the brake carrier 5, to which the (in this case three) brake calipers 6, which are also called a caliper unit, are attached. A respective brake caliper 6 encompasses a respective brake disk 4, and on each side of the brake disk 4 contains brake pads and the brake pistons, which press the brake pads axially against the brake disk 4.

(5) FIG. 1 illustrates only half the chassis, where the entire chassis comprises two wheel axles 3 parallel to one another, each with two wheels 7. The second half (not illustrated) of the chassis is designed to be symmetrical to the half illustrated. The brake carrier 5 thus likewise continues symmetrically and hence has six brake calipers 6 in total. The device in accordance with the invention can, however, also be formed precisely as illustrated here, in that the brake carrier 5 ends in the center of the chassis and only has brake calipers 6 for the brake disks 4 of one wheel axle 3.

(6) In this exemplary embodiment, the suspension bracket of the brake carrier 5 has two laminated suspension springs 8 fixed to the vehicle frame (on the longitudinal supports 2), one on each side of the brake carrier. The laminated suspension springs 8 are generally manufactured from steel. This is more readily apparent in FIG. 2, because the longitudinal supports 2 and the wheels 7 are not illustrated there. Provided on each longitudinal side of the brake carrier 5 per wheel axle is a laminated suspension spring 8, the surface of which is oriented in parallel to the direction of travel 9. In this case, the laminated suspension spring 8 has, in its longitudinal direction, a larger component in the direction of the vertical axis of the chassis (normal to the direction of travel 9 and to the wheel axles 3) than in the transverse direction of the chassis (parallel to the wheel axle 3). In the case in point, the laminated suspension spring is oriented in parallel to the vertical axis, in other words perpendicular in the operating state of the chassis.

(7) The laminated suspension spring 8 is attached at one end to the brake carrier 5 via a plate 10. By the other end, it is attached to a bearing bush 11 that is lined inside with an elastic material and via this elastic material is connected to the vehicle frame, such as by a bolt, which is mounted in a bracket 12, where the bracket 12 is fixedly connected to the vehicle frame (in this case the respective longitudinal support 2). The bearing bushes 11 are, in this case, oriented in the direction of travel 9. The elastic lining of the bearing bush 11 causes the transverse rigidity of the laminated suspension spring 8 to be reduced. The two laminated suspension springs 8 drawn in FIG. 2 are arranged symmetrically to one another with respect to the direction of travel 9.

(8) The brake carrier 5 with the brake calipers 6 can now oscillate about the bearing bolts 13 transversely to the direction of travel 9, and as an oscillating mass can absorb undesirable vibrations.

(9) If the brake carrier 5 continues symmetrically in the longitudinal direction of the vehicle frame, its suspension bracket then has a total of four laminated suspension springs 8.

(10) For all contemplated embodiments, it should be understood that the rigidity and the damping of the elastic elements in the transverse direction of the vehicle frame can be aligned to the mass of the corresponding brake carriers together with brake components fixed thereto and the chassis. The necessary elasticity or rigidity of the inventive elastic elements is hence calculated beforehand and the elastic elements are manufactured with defined elasticity, in particular transverse elasticity, or rigidity. The aim is to improve the running properties of the chassis with respect to vibrations.

(11) Thus, while there have been shown, described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.