RAIL VEHICLE BRAKE DISK

Abstract

A one-piece rail vehicle brake disk is made of steel or cast iron, comprises at least one effective surface with which a friction element comes in contact during a braking maneuver, and is designed in such a way that the effective surface has a plurality of blind holes.

Claims

1. A one-piece rail vehicle brake disk composed of steel or cast iron, having at least one effective surface, on which a friction element rests during a braking operation, wherein that the effective surface is provided with a plurality of blind openings.

2. The brake disk of claim 1, wherein the blind openings correspond in depth approximately to the maximum permissible depth of wear of the brake disk.

3. The brake disk as claimed in of claim 1, wherein the blind openings are in an ordered or unordered pattern.

4. The brake disk of claim 1, wherein the blind openings are designed as blind holes or grooves.

5. The brake disk of claim 1, wherein the blind holes have a round or oval outline.

6. The brake disk of claim 1, wherein the blind holes are of cylindrical or funnel-shaped design.

7. The brake disk of claim 1, wherein the blind holes are arranged concentrically and/or radially.

8. The brake disk of claim 1, wherein the grooves are arranged radially or tangentially.

9. The brake disk of claim 1, wherein the blind openings are introduced by machining or during casting.

Description

BRIEF DESCRIPTION OF FIGURES

[0019] Disclosed embodiments is explained in greater detail below with reference to the drawings, in which:

[0020] FIG. 1 shows an illustrative embodiment of a brake disk according to a plan view

[0021] FIG. 2 shows the brake disk according to FIG. 1 in a partially broken-away side view

[0022] FIG. 3 shows another variant embodiment of the brake disk, likewise in a plan view

[0023] FIG. 4 shows the brake disk according to FIG. 3 in a side view, partially broken away.

DETAILED DESCRIPTION

[0024] The figures show a one-piece rail vehicle brake disk 1 composed of steel or cast iron, having an effective surface 2, on which a friction element rests during a braking operation.

[0025] According to the disclosed embodiments, the effective surface 2 is provided with a plurality of blind openings, which consist of blind holes 3 in the example shown in FIGS. 1 and 2.

[0026] In FIG. 1, a substantially chaotic arrangement of the blind holes 3 is shown as one possibility for positioning, more specifically in the upper left-hand quarter of the circular surface.

[0027] In the lower right-hand quarter of the circular surface, there is ordered positioning of the blind holes 3 to be seen, in which said holes are aligned both radially and also in multiple concentric arrangements.

[0028] Here, the depth T of the blind holes 3 corresponds to the maximum permitted degree of wear of the effective surface 2.

[0029] This is also the case in the example of the disclosed embodiments shown in FIGS. 3 and 4, in which the blind openings are designed as grooves 4 which, as can be seen from the upper half of FIG. 3, can be aligned in a chaotic manner, or, in accordance with the lower right-hand quarter of the circular surface, radially aligned or, in accordance with the lower left-hand quarter of the circular surface, tangentially aligned, in which case the grooves 4 are parallel and spaced apart.

[0030] In other respects, there is a free choice both of the peripheral contour of the grooves 4 and of the cross-sectional contour thereof, and it should be adapted appropriately to the most favorable functional and manufacturing conditions.

[0031] That is to say that, instead of a rectangular shape, the grooves 4 can also be in the form of an elongate hole with rounded ends.

[0032] The cross-sectional contour of the grooves 4 can also assume any desired suitable shape, i.e. can be U-shaped, for example, with a rounded bottom or triangular.

[0033] There is likewise a free choice as regards the outline of the blind holes 3 shown in FIG. 3, i.e. they can have some other contour, and can likewise taper inward in a funnel shape.

[0034] In principle, there is a free choice as regards the number, shape and arrangement of the blind openings and, as has been mentioned, the choice depends on the functional requirements and cost minimization.