Braking device

Abstract

The present invention relates to a braking device (1), particularly a braking device for a railway wheel or brake disc arranged on a railway test bench, comprising at least one braking unit (2) for being arranged on one side of a railway wheel and for decelerating the railway wheel or brake disc, a brake cylinder (3) for establishing braking pressure and / or braking force for the at least one braking unit (2), and at least one brake lever (4) for transmitting braking pressure from the brake cylinder (3) to the braking unit (2), characterized in that a rocker arm (6) supported in a manner rotatable about a rotation axis is arranged between the at least one braking unit (2) and the at least one brake lever (4) for uniformly transmitting the braking pressure and / or braking force to the respective braking unit (2).

Description

Technical Field

[0001] The invention relates to a brake device, in particular a brake device for a railway wheel or a brake disc arranged on a railway test bench, comprising at least one brake unit, a brake cylinder and at least one brake lever. Background Art

[0002] For the development of railway brake linings, acceptance criteria are drawn up according to the UIC standards of the International Union of Railways (UIC). When testing brake linings on test rigs, reproducible relationships that correspond to reality are specified. This means that the forces applied to the brake linings must correspond to the realistic relationships. Since the brake units in the test rigs have different requirements compared to the real brake units, this cannot always be achieved without additional aids. All manufacturers of brake test rigs for railway brakes must provide brake equipment that is suitable for UIC tests. However, many brake units from different manufacturers are not approved for use on railway test rigs due to the requirements and boundary conditions of the UIC standards and / or other test standards. Summary of the invention

[0003] It is therefore an object of the present invention to provide a brake device, in particular a brake device for a railway wheel or a brake disc arranged on a railway test bench, which corresponds to the guidelines of the UIC standard for railway test benches.

[0004] According to the invention, a braking device, in particular a braking device for a railway wheel arranged on a railway test bench, is proposed, which has at least one brake unit for being arranged on one side of the railway wheel and for decelerating the railway wheel. In addition, the braking device comprises a brake cylinder for building up a brake pressure for the at least one brake unit and at least one brake rod for transmitting the brake pressure from the brake cylinder to the brake unit. A rocker arm is arranged between the at least one brake unit and the at least one brake rod, which is supported in a rotatable manner about a rotation axis in order to uniformly transmit the brake pressure and / or the brake force to the respective brake unit.

[0005] This has the advantage that, since the rocker arm is supported rotatably about the axis of rotation, a force balance occurs between the upper part and the lower part when a force is applied to the brake unit. The rocker arm transmits the brake pressure and / or the brake force uniformly to the corresponding brake unit or brake disc, so that the force applied by the rocker arm to the railway test bench corresponds to the actual value when the train is running on the track.

[0006] In an advantageous embodiment, the rocker arm comprises: a rocker arm body having a through hole and a rocker arm bracket having a rocker arm pivot. Here, the rocker arm pivot passes through the through hole and rotatably supports the rocker arm body. Advantageously, since the rocker arm body is rotatably supported on the rocker arm pivot, the rocker arm is supported rotatably around the rotation axis, so that the brake pressure can be uniformly transmitted to the corresponding brake unit.

[0007] The brake device is preferably designed in such a way that the rocker arm is fixed to at least one brake lever by means of a rocker arm bracket. The rocker arm bracket is particularly suitable for fixing the rocker arm, since the uniform transmission of the brake pressure to the corresponding brake unit is not affected by this.

[0008] In one embodiment of the present invention, it is provided that the rocker arm body is constructed in an arcuate or C-shaped manner and has a fastening recess at each free end of the rocker arm body, to which at least one brake unit is fixed. In this way, the rocker arm body is fastened to the brake unit.

[0009] Furthermore, in an advantageous embodiment, the fastening element of at least one brake unit passes through the corresponding fastening recess and rotatably supports the rocker arm body, thereby obtaining an additional degree of rotational freedom of the rocker arm and optimizing the uniform transmission of the brake pressure to the corresponding brake unit.

[0010] In a further advantageous variant, the invention provides that the rocker arm is fastened to at least one brake lever by means of a rocker arm bracket in such a way that the rocker arm body is supported on the rocker arm pivot in a manner rotatable about at least one horizontal axis and the rocker arm body is supported on the brake unit in a manner rotatable about at least one vertical axis. The combination of a horizontal axis of rotation and a vertical axis of rotation improves the uniform transmission of the brake pressure and / or the brake force to the respective brake unit of the balance due to the corresponding improvement in the degrees of freedom. Furthermore, such an arrangement and / or alignment of the rocker arm is particularly advantageous for a uniform application of the brake pressure and / or the brake force to the brake unit.

[0011] In one embodiment, the brake device according to the present invention is designed such that the through hole is arranged in the center between the two fastening recesses of the rocker arm body. As a result, the force is uniformly applied to the brake unit.

[0012] In a preferred embodiment of the brake device, two brake levers and two brake units are provided, which in particular form a brake caliper that can be arranged on opposite sides of a railway wheel, and a rocker arm is arranged on the respective brake unit and the respective brake lever, respectively, in order to evenly transmit the brake pressure to the respective brake unit. The brake caliper is used in real railway operation and is therefore particularly useful for simulating real railway operation on a railway test bench.

[0013] It is further advantageous if the brake unit comprises a brake lining for decelerating the railway wheel and a brake lining support, the rocker arm being rotatably fastened to the brake lining support. This has the advantage that the brake lining support is designed for alignment of the brake unit and for uniform application of force to the brake unit. The corresponding brake pressure is transmitted uniformly to the brake lining, and accordingly the brake lining acts uniformly on the railway wheel during deceleration.

[0014] In an alternative embodiment of the brake device according to the invention, it is further provided that a brake rod is provided for the brake unit, to which the corresponding brake unit is fixed and can rotate about at least one axis. Thus, the brake unit is fixed and pre-positioned on the brake device via the brake rod, so that the brake unit is rotated about at least one axis when the brake pressure and / or the brake force uniformly transmitted via the rocker arm is abnormal.

[0015] In another advantageous embodiment variant, a suspension is provided for the brake lever, to which the respective brake lever is fastened rotatably about an axis and has its respective pivot point. In this way, the brake lever is fastened to the brake device and the respective lever is adjusted to apply a brake pressure and / or a brake force to the brake unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Further advantageous developments of the invention are characterized in the dependent claims and / or are shown in more detail below in conjunction with the description of preferred exemplary embodiments of the invention with reference to the accompanying drawings:

[0017] Figure 1 A schematic diagram showing a braking device for a railway wheel arranged on a railway test bench,

[0018] Figure 2 A perspective view showing a braking device for a railway wheel arranged on a railway test bench, and

[0019] Figure 3 A cross-sectional view of a braking device for a railway wheel arranged on a railway test bench is shown. DETAILED DESCRIPTION

[0020] Figure 1A schematic diagram of a brake device 1 for a railway wheel arranged on a railway test bench is shown. The brake device 1 comprises two brake units 2 for being arranged on respective opposite sides of a railway wheel and for decelerating the railway wheel. The brake device 1 also comprises a brake cylinder 3 for building up a brake pressure for the respective brake unit 2 and a respective brake rod 4 for transmitting the brake pressure from the brake cylinder 3 to the brake unit 2. The two brake rods 4 and the two brake units form a brake caliper 7, which is arranged on a suspension 9 for the brake rods 4, to which the respective brake rods 4 are fixed, rotatable about an axis and having their respective pivot points. The brake unit 2 comprises a brake lining 21 for decelerating the railway wheel and a brake lining support 22. Between the respective brake unit 2 and at least one brake rod 4, a rocker arm 6 is arranged, which is rotatably supported about a rotation axis, for uniformly transmitting the brake pressure to the respective brake unit 2. The rocker arm 6 is rotatably fixed to the brake lining support 22.

[0021] Figure 2 Shows Figure 1 The brake device 1 for a railway wheel arranged on a railway test bench is shown in a perspective view. Figure 3 The corresponding cross-sectional view is shown. The brake device has a suspension 9, and the corresponding brake rod 4 is fixed on the suspension 9, can rotate around the axis, and has its corresponding rotation point. A rocker arm 6 that can be supported rotatably around the rotation axis is arranged between the corresponding brake unit 2 and the corresponding brake rod 4, which is used to uniformly transmit the brake pressure to the corresponding brake unit 2. The corresponding brake unit 2 includes: a brake lining 21 for decelerating the railway wheel; and a brake lining bracket 22, on which the rocker arm 6 is rotatably fixed. In addition, a brake pull rod 8 is provided for the corresponding brake unit 2, and the corresponding brake unit 2 is fastened to the brake pull rod 8 and can rotate around at least one axis. The rocker arm 6 includes a rocker arm body 61 with a through hole 62 and a rocker arm bracket 63 with a rocker arm pivot 64, which passes through the through hole 62 and supports the rocker arm body 61 in a rotatable manner. The corresponding rocker arm 6 is fixed to the corresponding brake rod 4 by means of the rocker arm bracket 63.

[0022] also, Figure 2 and Figure 3The rocker arm body 61 shown is constructed in an arcuate or C-shaped shape and has fastening recesses 65 at the respective free ends, respectively, to which the respective brake unit 2 is fixed. The fastening element 21 of the respective brake unit 2 passes through the respective fastening recesses 65 and supports the rocker arm body 61 in a rotatable manner. The rocker arm 6 is fixed to at least one brake lever 4 using a rocker arm bracket 63, so that the rocker arm body 61 is supported on the rocker arm pivot 64 and can rotate around the horizontal axis, and the rocker arm body 61 is supported on the brake unit 2 and can rotate around the vertical axis. In addition, the through hole 62 is arranged in the center between the two fastening recesses 65 of the rocker arm body 61.

[0023] Reference numerals list

[0024] 1 Braking device

[0025] 2 Braking unit

[0026] 21 brake pads

[0027] 22 Brake pad bracket

[0028] 3 brake cylinders

[0029] 4 brake levers

[0030] 6 Rocker arm

[0031] 61 rocker arm body

[0032] 62 through holes

[0033] 63 rocker arm bracket

[0034] 64 rocker arm pivot

[0035] 65 Fastening recess

[0036] 7 Brake caliper

[0037] 8 Brake lever

[0038] 9 Suspension

Claims

1. A brake device (1) for a railway wheel or brake disc, comprising: at least one brake unit (2) for being arranged on one side of a railway wheel and for decelerating the railway wheel or a brake disc, a brake cylinder (3) for building up a brake pressure and / or a brake force for the at least one brake unit (2), and at least one brake rod (4) for transmitting the brake pressure and / or the brake force from the brake cylinder (3) to the brake unit (2), in, A rocker arm (6) supported in a manner rotatable around a rotation axis is arranged between the at least one brake unit (2) and the at least one brake rod (4), and is used to uniformly transmit the brake pressure to the corresponding brake unit (2), characterized in that the rocker arm (6) is fixed to the at least one brake rod (4) by means of a rocker arm bracket (63), so that the rocker arm body (61) can rotate freely around at least one horizontal axis, and the rocker arm body (61) is supported on the brake unit (2) in a manner rotatable around at least one vertical axis; wherein the rocker arm (6) comprises: the rocker arm body (61) having a through hole (62); and the rocker arm bracket (63), It has a rocker arm pivot (64), which passes through the through hole (62) and supports the rocker arm body (61) in a rotatable manner; wherein the rocker arm (6) is fixed to the at least one brake rod (4) by means of the rocker arm bracket (63), so that the rocker arm body (61) is supported on the rocker arm pivot (64) in a rotatable manner around at least one horizontal axis, and the rocker arm body (61) is supported on the brake unit (2) in a rotatable manner around at least one vertical axis, wherein a brake rod (8) for the brake unit (2) is provided, and the corresponding brake unit (2) is fastened to the brake rod (8) in a rotatable manner around at least one axis.

2. The braking device (1) according to claim 1, characterized in that The rocker arm body (61) is constructed in an arcuate or C-shape and has fastening recesses (65) at the corresponding free ends of the rocker arm body (61), and the at least one brake unit (2) is fixed on the fastening recesses (65).

3. The brake device (1) according to claim 2, characterized in that The fastening element of the at least one brake unit (2) passes through a corresponding fastening recess (65) and supports the rocker arm body (61) in a rotatable manner.

4. The braking device (1) according to claim 2, characterized in that The through hole (62) is arranged at the center between the two fastening recesses (65) of the rocker arm body (61).

5. The brake device (1) according to any one of the preceding claims 1, 3 and 4, characterized in that: Two brake rods (4) and two brake units (2) are provided.

6. The braking device (1) according to claim 5, characterized in that The two brake rods (4) and the two brake units (2) form a brake caliper (7), which can be arranged on opposite sides of the railway wheel. A rocker arm (6) is arranged between the corresponding brake unit (2) and the corresponding brake rod (4) to uniformly transmit the brake pressure and / or brake force to the corresponding brake unit (2).

7. The brake device (1) according to any one of the preceding claims 1, 3, 4, 6, characterized in that: The brake unit (2) comprises: a brake lining (21) for decelerating the railway wheel; and a brake lining bracket (22), to which the rocker arm (6) is rotatably fixed.

8. The brake device (1) according to any one of the preceding claims 1, 3, 4, 6, characterized in that: A suspension (9) is arranged for the brake lever (4), on which the corresponding brake lever (4) is fixed in a rotatable manner about an axis and has its corresponding rotation point.

9. A railway test bench, characterized in that: The railway test bench has a braking device (1) according to any one of claims 1 to 8.

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