Device for fastening a brake calliper

Abstract

The application relates to a device for fastening a brake calliper (20) to a frame (40) of a vehicle, the brake calliper (20) being part of a brake for braking a rotatable brake disc of the vehicle, and the brake calliper (20) being fastened to the vehicle frame via a brake calliper interface, and an intermediate element being attached between the brake calliper interface and the brake calliper (40), which intermediate element permits both an articulation for compensating movements about the vehicle x-axis and the vehicle z-axis with a simultaneous supporting function for avoiding a rotation about the vehicle y-axis and a translational movement in the Y-direction.

Description

[0001] Device for attaching a brake caliper

[0002] The present invention relates to a device for fastening a brake caliper and in particular to a device for fastening a hydraulic brake caliper to the bogie frame of a rail vehicle.

[0003] background

[0004] If a hydraulic brake caliper is to be used in the bogie of a rail vehicle instead of a pneumatic brake caliper, the interface between the brake caliper and the bogie must be adapted by the bogie manufacturer. Since the operating principles of pneumatic brake calipers and hydraulic brake calipers are very different, adaptation is a complex process. Both the floating bearing and the support rod for the hydraulic brake caliper must be connected to the bogie, which a bogie equipped for a pneumatic brake caliper does not have an interface for.

[0005] In addition, rail vehicles such as trams often offer little space in the vehicle undercarriage to safely accommodate a braking system, for example.

[0006] The object of the present invention is to provide a device for attaching a hydraulic brake caliper to a bogie frame, with which a pneumatic brake caliper can be replaced by a hydraulic brake caliper in the chassis of a rail vehicle without any modifications to the bogie frame. A further object is to provide a device for attaching a brake caliper to a bogie frame with which a hydraulic brake caliper requires significantly less installation space than a comparable hydraulic brake caliper with a support rod or a comparable pneumatic brake caliper.

[0007] The problem is solved by a device for fastening a brake caliper with the features of claim 1. The brake caliper is part of a brake for braking a rotatable brake disc of the vehicle and is fastened to the vehicle frame via a brake caliper interface. An intermediate element, such as a connecting plate, is attached between the brake caliper interface and the brake caliper, which enables both articulation for compensating movements about the vehicle's x-axis and z-axis while simultaneously providing a support function to prevent rotation about the vehicle's y-axis and translation in the y-direction. The design of the brake caliper interface can enable the optional attachment of either a brake caliper or a brake caliper.

[0008] Furthermore, according to a first alternative, the object is achieved by a device for fastening a brake caliper with the features of claim 2. The device according to the invention for fastening a brake caliper to a frame of a vehicle according to the first alternative comprises a first bolt, a first holder for holding the brake caliper on the first bolt, and a second holder with a receptacle for holding one end of a second bolt connected to the brake caliper on the device, wherein the combination of the first holder and the second holder is designed to hold the first bolt and the second bolt, which are arranged in a mutually perpendicular orientation on the brake caliper, wherein the brake caliper is held rotationally fixed in a plane (x-z) perpendicular to the axis of rotation (Ri) of the brake disc, and rotations about both further axes of rotation (R2, R3), which are perpendicular to the axis of rotation (Ri) of the brake disc, are permitted.The brake calliper can be part of a brake for braking a rotatable brake disc of a vehicle, in particular a rail vehicle.

[0009] The object is achieved according to a second alternative by a device for fastening a brake caliper with the features of claim 3. The device according to the invention for fastening a brake caliper to a frame of a vehicle according to the second alternative comprises a bolt, a first holder for holding the brake caliper on the bolt and a second holder with a receptacle for holding one end of a sliding block rotatably connected to the brake caliper, wherein the combination of the first holder and the second holder is designed to hold the bolt and the sliding block, which are arranged in a mutually perpendicular orientation on the brake caliper, wherein the brake caliper is held in a rotationally fixed manner in a plane (xz) perpendicular to the axis of rotation (Ri) of the brake disc and rotations about both axes of rotation (R2, R3), which are perpendicular to the axis of rotation (Ri) of the brake disc, are permitted.

[0010] With the device according to the invention for attaching a brake caliper of a hydraulic brake, a pneumatic brake caliper can be replaced without further modifications to the connection to the chassis of a rail vehicle, since, according to the invention, the interface to the pneumatic brake caliper is also used for the connection to the device according to the invention. Furthermore, no support rod is used in the device according to the invention, so that the installation space required by the device according to the invention for attaching a hydraulic brake caliper can be reduced. The problem of connecting a conventional hydraulic brake caliper with a support rod to a chassis with a pneumatic brake caliper is explained with reference to Fig. 1.

[0011] According to one embodiment, the device for fastening a brake caliper has a combination of the features of the above-specified device according to the invention for fastening a brake caliper with the features of claim 1 with the features of the device according to the invention according to the first alternative.

[0012] According to a further embodiment, the device for fastening a brake caliper has a combination of the features of the above-mentioned device according to the invention for fastening a brake caliper with the features of claim 1 with the features of the device according to the invention according to the second alternative.

[0013] According to another embodiment, the first holder at least partially encloses the first bolt, and the first holder is displaceable in an axial direction (y) along the first bolt. This allows a floating bearing of the first holder to be realized.

[0014] According to a further embodiment, the second holder at least partially encloses the second bolt through the receptacle and the second holder is displaceable in a radial direction (y) and in an axial direction (x) along the second bolt.

[0015] According to another embodiment, the receptacle has the shape of an elongated hole whose height corresponds to the diameter of the second bolt and whose width exceeds the diameter of the second bolt by at least twice or several times the diameter of the second bolt. Instead of a receptacle, an edge of a side plate could be used as a stop for the end of the bolt.

[0016] According to yet another embodiment, either the second holder or the second bolt or both are designed to ensure a force transmission without elasticity at a torque about the axis of rotation (Ri).

[0017] According to another embodiment, the device is adapted for connection to a frame of a chassis of the vehicle.

[0018] According to yet another embodiment, the first bracket is configured to transmit all radial forces to the first bolt, and the second bracket is configured to transmit radial forces to the second bolt only in one direction.

[0019] According to yet another embodiment, the first bolt and the second bolt extend in mutually perpendicular directions, at least one of which is parallel to the axis of rotation (Ri) of the brake disc.

[0020] According to the invention, a device for fastening a brake calliper to a frame of a vehicle is further provided, wherein the brake is designed to brake a brake disc of the vehicle that is rotatable about a rotational axis (Ri), having the following features: means for transmitting a torque that is transmitted to the brake calliper during braking of the brake disc, to the frame; and

[0021] Means for pivoting the brake caliper relative to the frame in directions perpendicular to the torque, the means for pivoting comprising a first bracket for holding the brake caliper on a first bolt and a second bracket having a receptacle for holding one end of a second bolt connected to the brake caliper, the combination of the first bracket and the second bracket being adapted to hold the first bolt and the second bolt arranged in a mutually perpendicular orientation on the brake caliper.

[0022] According to one embodiment, the means for pivoting on the first holder have a minimum gap, wherein a pivoting range in at least one pivoting direction depends on a size of the minimum gap.

[0023] According to one embodiment, the means for pivoting on the first holder comprise an elastic element, in particular a rubber bushing, which allows a pivoting range in at least one pivoting direction.

[0024] Furthermore, according to the invention, a brake caliper suspension is provided with a brake caliper and a device having the features described above.

[0025] A rail vehicle is also provided with a frame, a brake disc and a brake calliper suspension with the features described above.

[0026] According to a further embodiment, the frame is a bogie frame or a device connected to the bogie frame, such as a gearbox or motor. In the context of the present invention, radial forces are to be understood as referring to all forces acting on the bolt in a radial direction (i.e. perpendicular to the axial direction). Embodiments ensure, in particular, that radial forces in the x-direction are transmitted as directly as possible, wherein the x-direction can, for example, be defined such that it refers to the direction of force exerted on the brake caliper by the torque to be compensated (e.g. the direction of travel of the vehicle if the brake caliper is arranged behind the vehicle wheel in the direction of travel, for example).

[0027] The frame can be chosen arbitrarily, as long as it is suitable for absorbing the torque to be compensated during braking. The frame should be designed to be wide and can include any component that couples to the wheels or axle of the vehicle via a spring stage. For example, it could be the bogie frame of the exemplary rail vehicle. The frame can also be any component connected to the bogie frame, such as an engine housing or a gearbox housing, or similar components of the vehicle.

[0028] Therefore, embodiments relate to brake caliper mounting devices that do not include a support rod, where the support rod in the present context can be defined as a rod that prevents movement in the plane perpendicular to the wheel's axis of rotation (to thereby transmit torque). Therefore, in further embodiments, both the first bracket and the second bracket are support rod-free brackets.

[0029] The embodiments of the present invention will be better understood from the following detailed description and the accompanying drawings of the different embodiments.

[0030] Short description of the characters

[0031] Fig. 1 illustrates the attachment of a conventional hydraulic brake caliper using a conventional support rod to a bogie frame with an interface that can be used, for example, for a pneumatic brake caliper. Fig. 2A schematically shows a device for attaching a brake caliper according to an embodiment of the present invention, viewed from the side.

[0032] Fig. 2ß shows schematically a device for fastening a brake caliper according to an embodiment of the present invention from the rear.

[0033] Fig. 3 shows in perspective a device for fastening a brake caliper according to an embodiment of the present invention;

[0034] Detailed description

[0035] Fig. i shows a view of a part of a bogie frame 40 of a chassis of an exemplary rail vehicle (e.g. a tram) together with a conventional hydraulic brake calliper 20 with support rod 53, on the basis of which the problem of attaching a conventional brake calliper 20 to the bogie frame 40 designed for a pneumatic brake calliper is illustrated below.

[0036] The illustrated bogie frame 40 is movably mounted relative to a brake disc 60, which is rigidly connected to a wheel 64. In particular, the bogie frame 40 is spring-mounted relative to the brake disc 60 on the wheelset by a primary spring (not shown), and it is therefore necessary for the brake caliper 20 to be able to perform angular movements relative to the brake disc 60.

[0037] In the following, reference is made to a coordinate system in which the axis of rotation of the wheel lies in the y-direction, the x-direction points in the direction of travel of the rail vehicle and the z-direction extends in the height direction of the rail vehicle, as shown in Fig. 1.

[0038] The attachment for the illustrated brake caliper 20 comprises a first bracket 21 and a second bracket 22. The first bracket 21 holds the brake caliper 20 relative to a bolt 11, which can be rigidly connected to a bogie frame 40 (not shown). The second bracket 22 comprises a support rod 53 extending between two ball joint bearings 54, one of which is rigidly connected to the bogie frame 40 (not shown) and the other of which is rigidly connected to the brake caliper 20. The ball joint bearings 54 can also be formed as part of the support rod 53. The first bracket 210 is designed such that all radial forces acting radially from the brake caliper 20 onto the bolt 11 are transmitted directly to the bolt 11. On the other hand, the first bracket 21 allows axial movement along the longitudinal direction of the bolt 11. Furthermore, rotational movements of the first bracket 21 relative to the bolt 11 are possible.

[0039] The second bracket 22 connects the brake caliper 20 to the bogie 40 via two ball joint bearings 54 and the intermediate support rod 53 in such a way that movement along the vehicle's longitudinal axis (x-direction) is prevented, but movement along the axial direction of a vehicle axle (y-direction) is possible. In particular, the support rod suspension allows rotation of the brake caliper 20 relative to the bogie frame 40, and the brake caliper 20 can follow a rotational movement of the wheel 60 (e.g., the brake disc) relative to the bogie frame 40.

[0040] The angular mobility of the brake caliper 20 relative to the brake disc 60 can be achieved in the illustrated suspension by mounting the brake caliper 20 at an interface (first bracket 21) so that it can be axially displaced in the y-direction and rotated in all directions. Forces acting radially toward the bolt 11 can thus be transmitted in all directions (fixed mounting). A ball joint 54 is provided at the second interface (second bracket 22), which transmits the remaining reaction force from the brake caliper 20 to the bogie frame 40 in the direction of a support rod 53 mounted on both sides with ball joints (loose mounting).

[0041] As can be seen in Fig. 1, the support rod 53 is adjustable in length and has a ball joint bearing 54 on each of the opposite sides, which is firmly connected to the bogie frame 40 on one side and to the brake caliper 20 on the other. The brake caliper 20, in turn, couples to the brake disc 60 of the vehicle, which is connected to the axle or a vehicle wheel 64 of the rail vehicle via a fastening device 61.

[0042] The conventional bracket 50 shown in Fig. 1 on the bogie frame 40, which is designed for connection to a pneumatic brake caliper (not shown), has the disadvantage that it cannot be used without adaptation with a hydraulic brake caliper of the type shown in Fig.

[0043] 1 can be used with a support rod in the bogie of the rail vehicle and must therefore first be adapted by the bogie builder. Since the interface 50 for the pneumatic brake caliper cannot be used, adapting the brake caliper 20 is very complex. Both the floating bearing of the first bracket 21 and the support rod 53 of the brake caliper must be connected to the bogie.

[0044] The conventional mounting of the brake caliper 20 on the bogie frame 40 shown here also has the disadvantage that it requires more space due to the support rod 53. Further shortening of the support rod 53 is often not an option, as a minimum length is required to provide sufficient freedom of movement. This additional space is not always available. For example, especially on trams, it is desirable to place the passenger compartment as low as possible and provide ample space for entry and exit, which severely limits the installation space.

[0045] Figures 2A and 2B schematically show a device for attaching a brake caliper 20 to a frame 40 of a vehicle according to an embodiment of the invention, in a view from the side (Fig. 2A) and from the rear (Fig. 2B), respectively. The brake caliper 20 is part of a brake, such as a rail vehicle, and is designed to brake a rotatable brake disc 60 and thus the vehicle. The device comprises a first bracket 210 in which a first bolt 110 is immovably fixed to a first side plate 55 extending vertically downward from an intermediate element, such as a connecting plate 50 of the device. The connecting plate 50 is connected to the frame 40 directly or by means of an interface 57 connected to the connecting plate 50. The first bolt 110 is straight. The brake caliper 20 is held on the first bolt 110 by the first bracket 210, which includes the first bolt 110.The first bracket 210 may have a floating bearing.

[0046] Furthermore, the brake caliper 20 is held on a second bolt 120 by a second holder 220. The second bolt 120 is also straight and is fixed at one end to the brake caliper 20. It extends perpendicular to the first bolt 110 in the direction of a second side plate 70, which also extends downwards from the connection plate 50, but is oriented perpendicular to the first side plate 55. In the second side plate 70, an elongated hole 80 is formed, in which the second end of the second bolt 120 is received. The elongated hole 80 extends parallel to the first bolt 110. In the embodiment shown, the elongated hole 80 extends in the horizontal plane. The height of the elongated hole 80 corresponds to the diameter of the second bolt 120, so that the second bolt 120 extends in the elongated hole 80 in the horizontal direction, iealong the elongated hole 80 and about both axes of rotation R2, R3, which are perpendicular to the axis of rotation Ri of the brake disc 60, while vertical movement, i.e. in a plane xz perpendicular to the axis of rotation Ri of the brake disc 60, is blocked. The second holder 220, which in the embodiment shown is formed by the second bolt 120 fixed to the brake caliper 20 and the side plate 55 of the connecting plate 50 provided with the elongated hole 80, is thus designed such that it is not fixed in all radial directions by the bolt, but leaves a certain amount of play in at least two directions, such as in the horizontal x-direction and in the y-direction. It is understandable that instead of the elongated hole, another device could be used to limit the movement of the second bolt in the z-direction, such as an edge of a plate or a groove.In addition, instead of the second bolt, a sliding block could also be used, which, instead of one or more contact points, can have one or more contact surfaces with an elongated hole or another contact surface of the connecting plate 50 or side plate 70.

[0047] The combination of the first bracket 210 and the second bracket 220 is configured to hold the brake caliper 20 rotationally fixed in a plane xz perpendicular to the rotation axis Ri of the brake disc 60 and to allow rotations about both rotation axes R2, R3, which are perpendicular to the rotation axis Ri of the brake disc 60. The first bracket 210 is immovable relative to the second bracket 220.

[0048] According to embodiments, the first bolt 110 represents a floating bolt. The first bracket 210 can be defined such that it at least partially surrounds the first bolt 110 and is displaceable in an axial direction (y-direction) along the first bolt 110. The second bolt 120 is fixed at its first end to the brake caliper 20 such that the first bolt 110 and the second bolt 120 extend in mutually perpendicular directions. However, the first bolt 110 and the second bolt 120 could also be designed without play if the axes of the bolts 110 and 120 intersect. If the axes of the bolts 110 and 120 do not intersect, a sufficiently large amount of play must be provided in the bearing point of the first bracket 210 and / or the second bracket 220.

[0049] The frame 40 can be the bogie frame of a rail vehicle, which, depending on the bogie design, in many cases offers the only connection option for the brake caliper 20. According to the illustrated embodiment, this connection is made via a brake caliper interface 57 fastened to the bogie frame 40, which has a connecting plate 50 to which the device for holding the brake caliper 20 can be fastened. The fastening of the brake caliper 20 to the primary-sprung bogie frame 40 serves to reduce the unsprung masses in the vehicle and to reduce the load caused by shock and vibration on the brake caliper 20. If the brake caliper 20 is not arranged behind the wheel as shown in Fig. 2A, 2B, but for example above or in front of the wheel, the coordinate system can be selected differently.Thus, the embodiments relate in particular to such a coordinate system in which the y-axis defines the rotational axis Ri of the wheel and the x-axis is the radial direction of the wheel, which points towards the brake calliper 20 and the z-axis defines the direction perpendicular thereto.

[0050] Figure 3 shows the device according to the invention for fastening the brake caliper 20 to the frame 40 of a vehicle and the hydraulic brake caliper 20 fastened thereto according to an embodiment with further details.

[0051] A first bracket 210 holds the brake caliper 20 relative to a first bolt 110, which is fixedly connected to a connecting plate 50 of the device for fixing the brake caliper 20. The connecting plate 50, which is horizontally oriented in the embodiment shown, is fixedly connected to a bogie frame 40 by means of a brake caliper interface 57. The brake caliper interface 57 is attached to the connecting plate 55, for example, by means of bolts or screws.

[0052] Extending downward from the connecting plate 50 is a side plate 55 arranged laterally thereon, which has an opening 61 in which the first bolt 110 is fixed to the side plate 55. The first bracket 210, which is arranged on the first bolt 110 and at least partially encloses it, is thus arranged below the connecting plate 50. The design of the first bracket 210 is similar or identical to the suspension of the brake caliper 20 shown in Fig. 1. The first bracket 210 is also designed as a floating bearing.

[0053] A second bracket 220 has a second bolt 120, which is fixedly connected to the brake caliper 20 at one end, while the second end is received in an elongated hole 80 formed in a further side plate 70 extending downward from the connecting plate 50. The elongated hole 80 extends substantially in the y-direction and allows movement of the second bolt 120 and thus of the brake caliper 20 in the horizontal y-direction, while preventing movement of the second bolt 120 and the brake caliper 20 in the z-direction.

[0054] In the hydraulic brake system 23 attached to the brake caliper 20, a brake device 27 (e.g., a brake pad) is actuated via a lever 24 during operation, which couples to the brake disc 60 and thereby initiates the braking process. The use of a floating caliper without a lever, in which the piston acts directly on the brake pad, is also conceivable.

[0055] During braking, wheel 64 is decelerated. This results in a torque acting on the brake caliper 20 and the brake system mounted thereon in the xz plane (i.e., about an axis parallel to the y-axis). This torque must be absorbed by the brake caliper 20 in order to brake the vehicle. Therefore, according to the illustrated embodiment, the first bracket 210 and the second bracket 220 are designed, shaped, or configured such that a relative rotational movement between the frame 40 and the brake caliper 20 in the xz plane is suppressed (i.e., the brake caliper 20 is rotationally fixed in this rotational plane).

[0056] This is achieved by securing the first bracket 210 to the first bolt 110 in such a way that radial forces from any direction are transmitted to the bolt 110. This results in a torque acting on the brake caliper 20 during braking. This torque acts around the first bolt 110.

[0057] To suppress the rotational movement in the xz-plane, the second bracket 220 is also designed such that a moment acting around the first bolt 110 is transferred directly to the second bolt 120. At the same time, however, it is ensured that the brake caliper 20 can move or rotate relative to the frame 40 when the vehicle is suspended, so that the brake disc 60 always remains aligned parallel to the braking device, thus ensuring effective braking.

[0058] For this purpose, according to the embodiment shown, the first bolt 110 is designed as a floating bolt, while the second bolt 120 is received in the elongated hole 80. As a result, both the first bracket 210 and the second bracket 220 are axially displaceable along the first bolt.

[0059] In addition, the brake caliper 20 is fixed to the frame 40 by the first bracket 210 and the second bracket 220 by means of the first bolt 110 and the second bolt 120 in such a way that both rotation about the z-direction and rotation about the x-direction are possible at least within a predetermined range. Specifically, in the exemplary embodiment shown, these functions can be ensured by the first bracket 210 having a specific cross-sectional geometry or sufficient elasticity in the mounting and being coupled to the first bolt 210, for example, via a rounded profile inside the first bracket 210 or a rubber bushing, and the second bracket 220 being coupled to the second bolt 120 via the elongated hole 80.

[0060] The rounded profile is formed on the radial sides of the first bolt 110 (ie in the x-direction and the z-direction) and enables the brake caliper 20 to be rotatable about the z-axis together with the first bracket 210 and the second bolt 120 arranged in the elongated hole 80.

[0061] To enable rotation within a specific range around the x-axis, the second bolt 120 of the second bracket 220 has a clearance in the elongated hole 80 that allows rotation of the second bolt 120 around the x-axis. This allows the brake caliper 20 or the second bolt 120 to rotate slightly in the elongated hole 80 of the second bracket 220 during rotation around the x-axis and, if necessary, to shift axially in the y-direction. If the axes of the first bolt 110 and the second bolt 210 intersect, a play-free mounting of the bolts is also conceivable.

[0062] It is understood that the described arrangement does not necessarily require all of the details shown to implement the invention. For example, the above illustration relates to the special case in which the first and second bolts 110, 120 are arranged vertically one above the other (along the z-direction) and perpendicular to one another (along the y-direction and z-direction, respectively). If the bolts 110, 120 were arranged differently, the entire arrangement would have to be moved or rotated accordingly. It is only important that the first and second brackets 210, 220 provide means for the required functions, i.e., means for transmitting a braking torque and means for pivoting the brake caliper 20 relative to the frame 40, perpendicular to the braking torque.

[0063] In the hydraulic brake caliper according to the embodiment shown in Fig. 3, the functional principle of the floating bearing can thus be used unchanged. However, the second bracket 220 is provided as a replacement for the support rod. This bracket determines the position of the brake caliper and can transmit the necessary forces and allow all necessary movements of the brake caliper. Furthermore, the device can be attached to the existing interface in the chassis.

[0064] The hydraulic brake caliper according to the embodiment shown in Fig. 2 requires significantly less installation space than a comparable pneumatic brake caliper. The mobility of the brake caliper is ensured via fixed or movable components, so that a single bearing point is sufficient instead of the double-mounted support rod. The principle of fixed mounting in a first interface by the first bracket 210 and loose mounting in a second interface by the second bracket 220 is retained. The loose mounting can only transmit forces near the z-direction.

[0065] The exemplary embodiments thus relate, among other things, to a fixed-loose bearing arrangement. The first interface remains axially displaceable in the Y direction and angularly movable around all axes. Both the first interface and the second interface can be implemented using a fixed bolt.

[0066] The features of the invention disclosed in the description, the claims and the figures may be essential for the realization of the invention both individually and in any combination.

[0067] List of reference symbols

[0068] 11 bolts

[0069] 20 brake caliper

[0070] 21 first bracket

[0071] 22 second bracket

[0072] 23 hydraulic brake system

[0073] 24 levers

[0074] 27 Braking device

[0075] 40 frames

[0076] 50 connection plate

[0077] 53 Support rod

[0078] 54 ball joint

[0079] 55 side plate

[0080] 57 Brake caliper interface

[0081] 60 brake disc

[0082] 61 Opening

[0083] 70 side plate

[0084] 80 slot

[0085] 61 Fastening device

[0086] 64 vehicle wheel

[0087] 110 first bolt

[0088] 120 second bolt

[0089] 210 first bracket

[0090] 220 second bracket

[0091] Ri, R2, R3 perpendicular rotation axes

Claims

Claims:

1. Device for fastening a brake caliper (20) to a frame (40) of a vehicle, wherein the brake caliper (20) is part of a brake for braking a rotatable brake disc (60) of the vehicle and wherein the brake caliper is fastened to the vehicle frame via a brake caliper interface, and wherein an intermediate element is attached between the brake caliper interface and the brake caliper, which intermediate element enables both articulation for compensating movements about the vehicle x-axis and the vehicle z-axis while simultaneously providing a support function to prevent rotation about the vehicle y-axis and translation in the y-direction.

2. A device for fastening a brake caliper (20) to a frame (40) of a vehicle, wherein the brake caliper (20) is part of a brake for braking a rotatable brake disc (60) of the vehicle, comprising: a first bolt (110); a first bracket (210) for holding the brake caliper (20) on the first bolt (110); a second bracket (220) with a receptacle for holding one end of a second bolt (120) connected to the brake caliper (20); wherein the combination of the first bracket (210) and the second bracket (220) is designed to hold the first bolt and the second bolt, which are arranged in a mutually perpendicular orientation on the brake caliper, wherein the brake caliper (20) is held rotationally fixed in a plane (xz) perpendicular to the axis of rotation (Ri) of the brake disc (60) and rotations about both axes of rotation (R2, R3) which are perpendicular to the axis of rotation (Ri) of the brake disc (60) are permitted.

3. Device for fastening a brake caliper (20) to a frame (40) of a vehicle, wherein the brake caliper (20) is part of a brake for braking a rotatable brake disc (60) of the vehicle, comprising: a bolt (110); a first bracket (210) for holding the brake caliper (20) on the bolt (110); a second bracket (220) with a receptacle for holding one end of a sliding block rotatably connected to the brake caliper (20), wherein the combination of the first bracket (210) and the second bracket (220) is designed to hold the bolt and the sliding block, which are arranged in a mutually perpendicular orientation on the brake caliper, wherein the brake caliper (20) is held in a rotationally fixed manner in a plane (xz) perpendicular to the axis of rotation (Ri) of the brake disc (60), and rotations about both axes of rotation (R2, R3) that are perpendicular to the axis of rotation (Ri) of the brake disc (60) are permitted.

4. Device according to claim 1 with the features of claim 2.

5. Device according to claim 1 with the features of claim 3.

6. Device according to claim 4, wherein the first holder (210) at least partially encloses the first bolt (110) and is displaceable in an axial direction (y) along the first bolt (110).

7. Device according to claim 4 or claim 6, wherein the second holder (220) at least partially encloses the second bolt (120) with the receptacle and is displaceable in a radial direction (y) and in an axial direction (x) along the second bolt (120).

8. Device according to one of the preceding claims 4, 6 or 7, wherein the receptacle has the shape of an elongated hole (80) whose height corresponds to the diameter of the second bolt (120) and whose width exceeds the diameter of the second bolt (120) by at least twice or several times the diameter of the second bolt (120).

9. Device according to one of the preceding claims 4, or 6 to 8, wherein the second holder (220) and / or the second bolt (120) are designed to ensure a force transmission without elasticity in the case of a torque about the axis of rotation (Ri).

10. Device according to one of the preceding claims 4, or 6 to 9, wherein the device is adapted for connection to a frame (40) of a chassis of the vehicle.

11. Device according to one of the preceding claims 4, or 6 to 10, wherein the first holder (210) is designed to transmit all radial forces to the first bolt (110), and the second holder (220) is designed to transmit radial forces in only one direction to the second bolt (120).

12. Device according to one of the preceding claims 4, or 6 to 11, wherein the first bolt (110) and the second bolt (120) extend in mutually perpendicular directions, at least one of which is parallel to the axis of rotation (Ri) of the brake disc (60).

13. Device for fastening a brake calliper (20) to a frame (40) of a vehicle, wherein the brake is designed to brake a brake disc (60) of the vehicle that is rotatable about an axis of rotation (Ri), having the following features: Means for transmitting a torque which is transmitted to the brake calliper (20) during braking of the brake disc (60) to the frame (40); and Means for pivoting the brake caliper (20) relative to the frame (40) in directions perpendicular to the torque, wherein the means for pivoting have a minimum gap and a pivoting range in at least one pivoting direction depends on a size of the minimum gap.

14. A brake caliper suspension comprising: a brake caliper (20); and a device according to any one of claims 1 to 13.

15. A rail vehicle comprising: a frame (40); a brake disc (60); and a brake caliper suspension according to claim 14.

16. A rail vehicle according to claim 15, wherein the frame (40) is a bogie frame or a device connected to the bogie frame.

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