SENSOR ARRANGEMENT AND CHASSIS

Description

[0001] The invention relates to a sensor arrangement comprising at least one sensor.

[0002] The bogies of rail vehicles often have devices that allow for the diagnosis or monitoring of the bogies themselves and / or the track. This enables faults and damage to the bogies (e.g., a defective damper, etc.) or the track (e.g., a track alignment error, a track break, etc.) to be detected and rectified in a timely manner.

[0003] Particularly for rail diagnostics and / or rail monitoring, it is important that the sensors intended for this purpose are positioned as close as possible to the rails. This entails a significant risk that obstacles or irregularities near the track (for example, a tree branch lying on the track or a track alignment defect) will collide with the sensors (for example, the branch or the track itself in the area of ​​the track alignment defect) and damage them.

[0004] The aforementioned risk can also affect devices used to mount vehicle-side equipment for train control systems, such as antennas for a linear train control system (LZB).

[0005] For example, WO 2006 / 032307 A1 discloses a diagnostic device for checking track systems (e.g., points). An acceleration sensor mounted on a wheelset bearing cover of a railway vehicle's bogie detects accelerations. These detected accelerations are compared with acceleration limits in an evaluation unit, and if limit values ​​are exceeded, inspection steps are initiated on the track system.

[0006] Furthermore, WO 2019 / 219756 A1 discloses a method and a device for diagnosing and monitoring track systems, wherein sensors are provided on the chassis of a rail vehicle.

[0007] Furthermore, EP 3 461 714 A1 discloses a running gear of a rail vehicle in which a tensioning device is clamped to a wheelset. A support device is mounted on the tensioning device and is connected to another running gear component (e.g., a running gear frame). The support device is located on the outside of the running gear and may accommodate a release lever for a train protection system or a stepladder.

[0008] RU 94535 U1 describes a chassis with a sensor arrangement in which a sensor is connected to a return device, whereby deflections of a support connected to the sensor take place transversely to the rail.

[0009] However, the sensors and devices shown are not located in the immediate vicinity of a track, and therefore no protective measures against obstacles in the area of ​​the track or against track irregularities etc. are apparent.

[0010] The invention is therefore based on the objective of providing a sensor arrangement that is further developed compared to the prior art, which on the one hand can be arranged in the near field of rails and on the other hand has a high level of safety with regard to possible collisions with objects and damage.

[0011] According to the invention, this problem is solved with a sensor arrangement according to claim 1.

[0012] This protects the sensor from damage, such as that caused by an obstacle near the track impacting it. Thanks to the reset mechanism, which allows the sensor to deflect and return to its original position, any mounting hardware used to connect the sensor assembly to, for example, a rail vehicle's chassis, is also protected from excessive loads and stresses.

[0013] Breakaway points between the sensor and adjacent components are unnecessary. As long as the load limit of the return mechanism or the sensor is not reached, the sensor remains reliably connected to the return mechanism in the event of collisions with objects and, for example, will not fall onto the track. Likewise, support for the sensor on the track (e.g., using support rollers) is unnecessary.

[0014] Further advantageous embodiments of the sensor arrangement according to the invention are set out in the dependent claims.

[0015] For example, it is advantageous if the return mechanism is spring-loaded.

[0016] However, it can also be helpful if the reset device is designed to oscillate.

[0017] These measures, which can be implemented as alternatives or in combination, achieve a mechanical decoupling of the sensor. For example, a spring-loaded and oscillating return mechanism can incorporate a lever arrangement connected to the sensor, which is supported by at least one torsion spring.

[0018] A spring-loaded return mechanism allows the sensor to quickly return to and maintain its nominal state after a deflection. This spring-loaded return mechanism further stabilizes the sensor assembly and prevents spontaneous deflections of the sensor that occur without the sensor colliding with an object.

[0019] A preferred solution is achieved when the return mechanism is designed as a wire rope spring, the coils of which are connected on a first side and a second side opposite the first side to at least one profile that is aligned parallel to a longitudinal axis of the return mechanism. This profile is connected on the first side to the at least one sensor and on the second side can be connected, in particular, to the chassis of a rail vehicle. This measure results in a particularly compact sensor arrangement, the sensor of which can be guided in a resilient manner, for example, parallel to a chassis longitudinal axis, without the need for force redirection devices. A lever arrangement, etc., for mounting the sensor is unnecessary.

[0020] An appropriate resistance of the sensor to movements can be achieved, for example, by selecting a wire rope spring with suitable spring stiffness.

[0021] However, it can also be advantageous if the reset device comprises at least a first rocker arm and a second rocker arm, which are articulated to the at least one sensor and which, in particular, can be articulated to a chassis for a rail vehicle.

[0022] This results in a particularly robust, highly resilient sensor arrangement.

[0023] A combination of spring-like and pendulum-like properties of the return device is achieved when the first rocker arm and the second rocker arm are coupled to each other via a first spring and a second spring, which are arranged crossing each other.

[0024] The first and second springs can, for example, be designed as coiled tension springs. Due to the first and second springs and their crossed arrangement, the sensor is held stably in its nominal state as long as no object strikes it.

[0025] The sensor can be positioned, for example, by adjusting the length of the first rocker arm, the second rocker arm, the first spring and / or the second spring.

[0026] An alternative way to combine spring-like and pendulum-like properties of the return device, which does not require intersecting springs, is obtained if the return device comprises a third rocker arm and a fourth rocker arm, which are articulated to the at least one sensor, wherein the third rocker arm is articulated to the first rocker arm to form a first pair of levers and the fourth rocker arm is articulated to the second rocker arm to form a second pair of levers, and wherein the first pair of levers and the second pair of levers are coupled to each other by means of a connecting spring.

[0027] The installation height can be adjusted, for example, by changing the length of the connecting spring. For instance, lengthening the connecting spring extends the first and second pairs of levers. If the sensor assembly is located in the underfloor area of ​​a vehicle, this extension allows the sensor to be lowered further.

[0028] Eliminating the need for components that require inspection and maintenance, such as coil springs, levers, joints, etc., while still achieving satisfactory suspension properties, is made possible if the return mechanism is designed as an elastomer element or an elastomer-metal element.

[0029] If the sensor collides with a rail (e.g. due to a track alignment error) or with an obstacle (e.g. with a foreign object on the rail), the elastomer element (e.g. a rubber element) or elastomer-metal element (e.g. a layer spring) is deformed and returns to its original shape after such a collision.

[0030] Due to the damping properties of elastomer elements or elastomer-metal elements, this measure results in noise and vibration damping of the sensor arrangement.

[0031] An advantageous solution is achieved if an emergency stop device is connected on the one hand to at least one sensor and on the other hand can be connected, in particular, to a chassis for a rail vehicle.

[0032] This measure provides additional protection for the sensor beyond the reset mechanism. If the reset mechanism fails (for example, due to excessive stress from an obstacle colliding with the sensor), the sensor is held by the emergency catch and cannot, for example, fall onto a track.

[0033] To simplify the assembly and disassembly processes of the sensor arrangement, it can be helpful if the sensor arrangement has at least one first support which is connected to the reset device on the one hand and which can be connected to a chassis for a rail vehicle on the other.

[0034] The first support can, for example, be designed as a mounting bracket, which can also be used to compensate for distances.

[0035] An advantageous application of the reset device is opened up if at least one sensor is designed as a measuring instrument for monitoring and / or diagnosing a track or as a vehicle sensor of a train control system.

[0036] The invention further relates to a chassis for a rail vehicle with at least one sensor arrangement according to the invention, wherein at least one sensor of the sensor arrangement is movable at least parallel to a longitudinal axis of the chassis.

[0037] This measure enables deflection and reset processes of the sensor, for example, when the chassis approaches an object, an obstacle or a track alignment error in the direction of travel.

[0038] A special flexibility in connection with deflection and reset processes of the sensor is achieved if at least one sensor is movable in a plane formed by the longitudinal axis of the chassis and a vertical axis of the chassis.

[0039] This measure allows the sensor to be mechanically decoupled in a direction perpendicular to the direction of travel (e.g. vertically) (for example, to compensate for suspension processes of the chassis).

[0040] It is advantageous, for example, if at least one sensor array is flexibly connected to at least one chassis structural component parallel to a chassis vertical axis. This measure achieves mechanical decoupling relative to the chassis structural component. The chassis structural component could be, for example, a wheelset bearing housing, a chassis frame, etc.

[0041] Components used for mechanical decoupling (e.g. springs) can, for example, have different stiffnesses parallel to the vertical axis of the chassis and parallel to the longitudinal axis of the chassis.

[0042] A definition of the installation height of the sensor arrangement relative to the chassis structure component is made possible if at least one spacer is arranged between the at least one sensor arrangement and at least one chassis structure component.

[0043] If the spacer shim is replaced, for example, with a thicker or thinner version, a subsequent adjustment or change of the installation height (e.g., during chassis maintenance) is possible. The invention is explained in more detail below using exemplary embodiments.

[0044] They show, for example: Fig. 1: A side view of an exemplary embodiment of a chassis according to the invention with an exemplary first embodiment of a sensor arrangement according to the invention, wherein a return device designed as a wire rope spring is connected to a sensor, Fig. 2: A side view of a section from the exemplary first embodiment of a sensor arrangement according to the invention, Fig. 3: A side view of a section from an exemplary second embodiment of a sensor arrangement according to the invention with a rocker arm arrangement and a first support in a resilient connection with an exemplary embodiment of a chassis according to the invention, Fig.Fig. 4: A side view of a section of an exemplary third embodiment of a sensor arrangement according to the invention with a rocker arm arrangement, a first support and a second support designed as a mounting bracket in a resilient connection with an exemplary embodiment of a chassis according to the invention, Fig. 5: A side view of a section of an exemplary fourth embodiment of a sensor arrangement according to the invention with a first support and a rocker arm arrangement, wherein a first rocker arm and a second rocker arm are connected to each other by means of a first spring and a second spring which are arranged crossing each other, Fig.Fig. 6: A side view of a section of an exemplary fifth embodiment of a sensor arrangement according to the invention, comprising a first support, a second support designed as a mounting bracket, and a rocker arm arrangement, wherein a first rocker arm and a second rocker arm are connected to each other by means of a first spring and a second spring which are arranged crossing each other. Fig. 7: A side view of a section of an exemplary sixth embodiment of a sensor arrangement according to the invention, comprising a first support and a rocker arm arrangement, wherein a first pair of levers and a second pair of levers are connected to each other by means of a connecting spring. Fig. 8: A side view of a section of an exemplary seventh embodiment of a sensor arrangement according to the invention, comprising a first support, a return device designed as an elastomer element, and a rope-like emergency stop device..

[0045] Fig. 1 shows a side view of an exemplary embodiment of a chassis of a rail vehicle according to the invention, with which an exemplary first embodiment of a sensor arrangement according to the invention is coupled.

[0046] A first wheelset 1 is connected via a first primary spring 3, a first wheelset bearing enclosed by a first wheelset bearing housing 5, a first wheelset guide device 7 and a first wheelset guide bushing 9, as well as via a further primary spring, a further wheelset bearing enclosed by a further wheelset bearing housing, a further wheelset guide device and a further wheelset guide bushing, which are in Fig. 1 are not visible, coupled to a chassis frame 11.

[0047] The first wheelset guide device 7 is designed as a swing arm and is connected to the first wheelset bearing housing 5 and to the first wheelset guide bushing 9, which is mounted in the chassis frame 11.

[0048] The second wheelset 2 is connected via a second primary spring 4, a second wheelset bearing enclosed by a second wheelset bearing housing 6, a second wheelset guide device 8 and a second wheelset guide bushing 10, as well as via a further primary spring, a further wheelset bearing enclosed by a further wheelset bearing housing, a further wheelset guide device and a further wheelset guide bushing, which are in Fig. 1 The second wheelset guide device 8 is designed as a swing arm and is connected to the second wheelset bearing housing 6 and to the second wheelset guide bushing 10, which is mounted in the chassis frame 11.

[0049] The additional primary springs, the additional wheelset guide devices, the additional wheelset bearings, the additional wheelset bearing housings and the additional wheelset guide bushings are designed and connected in the same way as the first primary spring 3 and the second primary spring 4, the first wheelset guide device 7 and the second wheelset guide device 8, the first wheelset bearing and the second wheelset bearing, the first wheelset bearing housing 5 and the second wheelset bearing housing 6, as well as the first wheelset guide bushing 9 and the second wheelset guide bushing 10.

[0050] The sensor arrangement comprises a first support 12, which, allowing relative movements between the first wheelset 1 and the second wheelset 2, is connected via a first pendulum 14 to the first wheelset bearing housing 5 and via a first elastic bearing 15 to the second wheelset bearing housing 6. The first support 12 is further connected via a second pendulum and a second elastic bearing, which are Fig. 1 are not visible, but are connected to the other wheelset bearing housings.

[0051] The first wheelset bearing housing 5, the second wheelset bearing housing 6 and the other wheelset bearing housings are chassis structural components.

[0052] The chassis frame 11 is also a chassis structural component. According to the invention, it is also conceivable that the first support 12 is, for example, directly coupled to the chassis frame 11.

[0053] The sensor arrangement further includes a sensor 16, which is designed as a measuring instrument for monitoring and / or diagnosing a track 17 on which the chassis is arranged or can travel via the first wheelset 1 and the second wheelset 2.

[0054] However, according to the invention, it is also conceivable that the sensor 16 is designed as a vehicle sensor of a train control system, e.g. as a vehicle-side antenna of a system for linear train control (LZB).

[0055] The sensor 16 is connected to the first support 12 via a distance compensation insert 18, which is screwed to the first support 12, and a return device 19 designed as a metallic wire rope spring, which is screwed to the sensor 16 and to the distance compensation insert 18.

[0056] The distance compensation shim 18 and the reset device 19 are parts of the sensor assembly. The sensor 16 is connected to the chassis via the reset device 19, the distance compensation shim 18 and the first support 12.

[0057] The return device 19 is spring-loaded, with the sensor 16 returning to its original position after a deflection from a position in Fig. 1 the nominal state shown is transformed into a deflected state, as exemplified in Fig. 2 as shown, is returned to the nominal state.

[0058] Due to the spring properties of the return device 19, the sensor 16 is movable parallel to a chassis longitudinal axis 20.

[0059] According to the invention, it is also conceivable that the sensor 16, as for example in Fig. 3 shown, is connected to the chassis in such a way that it is also movable parallel to a chassis vertical axis 21.

[0060] In its nominal state, sensor 16 is positioned a short distance from track 17 and is not supported on track 17 (e.g., via support rollers or a sliding contact between sensor 16 and track 17, etc.). The distance between sensor 16 and track 17 in its nominal state is less than the primary suspension travel of the chassis.

[0061] However, sensor 16 can come into contact with track 17 (for example, due to a track alignment error).

[0062] In Fig. 2 is a side view of a section of that exemplary first embodiment of a sensor arrangement according to the invention, which is shown in Fig. 1 is revealed, depicted.

[0063] Therefore, in Fig. 2 partially the same reference symbols as in Fig. 1 used.

[0064] Unlike Fig. 1 is in Fig. 2 a sensor 16 of the sensor arrangement in a parallel to a in Fig. 1 The chassis longitudinal axis 20 shown is deflected, which occurred due to contact between sensor 16 and track 17 caused by a track alignment error.

[0065] Deflections and return movements of the sensor 16 are enabled by a spring-loaded return device 19, via which the sensor 16 is connected to a chassis structural component of a vehicle. Fig. 1 The depicted chassis is coupled to a rail vehicle.

[0066] The return device 19 is designed as a wire rope spring. The windings 22 of the return device 19 are arranged on a first side 23 and on a second side 24 opposite the first side 23 with a C- shaped profile 25, which is aligned parallel to a spring longitudinal axis 26 of the return device 19, is jammed.

[0067] The spring longitudinal axis 26 is arranged parallel to the chassis longitudinal axis 20.

[0068] The profile 25 is connected to the sensor 16 via the first side 23, and via the second side 24 to a distance compensation insert 18 of the sensor assembly, which in turn is coupled to a first support 12 of the sensor assembly. Thus, the profile 25 is connected to the chassis via the second side 24.

[0069] According to the invention, it is also possible that the profile 25 is not continuous, but that, for example, a first flat profile is arranged in the area of ​​the first side 23 and a second flat profile is arranged in the area of ​​the second side 24.

[0070] Fig. 3 Figure 1 shows a side view of a section of an exemplary second embodiment of a sensor arrangement according to the invention, comprising a rocker arm arrangement and a first support 12 in a resilient connection with an exemplary embodiment of a chassis according to the invention, as is the case, for example, in Fig. 1 is shown.

[0071] The sensor arrangement includes a sensor 16, which is designed as a measuring instrument for evaluating the condition of a track 17. The sensor 16 is connected to the first support 12 via a pivoting and spring-loaded return device 19, allowing it to be deflected and returned. The return device 19 is located on the underside of the first support 12. A distance compensation insert 18 of the sensor arrangement is connected to an upper side of the first support 12. A first compression spring 27 and a second compression spring 28 are coupled to the distance compensation insert 18, the longitudinal axes of which are parallel to a running gear vertical axis 21, as exemplified in Fig. 1 As shown, they are aligned.

[0072] The first compression spring 27 and the second compression spring 28 are connected to a first wheelset bearing housing 5, i.e. to a chassis structural component.

[0073] Thus, the sensor assembly is connected to a chassis.

[0074] The reset device 19 has a first rocker arm 29 and a second rocker arm 30, which are articulated to the sensor 16 and articulated to the first carrier 12.

[0075] The first rocker arm 29 is connected to the first support 12 via a first pivot joint 33 and a first torsion spring 37 connected to the first pivot joint 33, the second rocker arm 30 via a second pivot joint 34 and a second torsion spring 38 connected to the second pivot joint 34.

[0076] The sensor 16 is thus connected to the first support 12 in a pivoting and spring-like manner and can be moved in a plane defined by a longitudinal chassis axis 20, as exemplified in Fig. 1 is revealed, and the chassis vertical axis 21 is formed, can be moved.

[0077] Fig. 3 Figure 16 shows sensor 16 in a state deflected to the left and upwards from its nominal state. Due to a track alignment error, sensor 16 makes contact with track 17. When the track alignment error is eliminated, sensor 16 returns to its nominal state. In this nominal state, the first rocker arm 29 and the second rocker arm 30 are aligned parallel to the chassis vertical axis 21.

[0078] In Fig. 4 is a side view of a section of an exemplary third embodiment of a sensor arrangement according to the invention with a rocker arm arrangement, a first support 12 and a second support 13 designed as a mounting bracket in a resilient connection with an exemplary embodiment of a chassis according to the invention, as is the case, for example, in Fig. 1 shown, depicted.

[0079] A sensor 16 is equipped with a reset device 19, which corresponds to the variant described in connection with Fig. 3 As described, connected. Therefore, in Fig. 4 partially the same reference symbols as in Fig. 3 used. The pendulum-like and spring-loaded return device 19 is articulatedly coupled to the second support 13.

[0080] The second support 13 is positioned between the sensor 16 and the first support 12. A spacer shim 18 is screwed to one upper surface of the second support 13. A first compression spring 27 and a second compression spring 28, whose longitudinal axes are parallel to a chassis vertical axis 21, as exemplified in Fig. 1 shown, are aligned, connected.

[0081] The first support 12 is connected to a chassis structural component of the chassis.

[0082] Fig. 5 Disclosing a side view of a section of an exemplary fourth embodiment of a sensor arrangement according to the invention, comprising a sensor 16, a reset device 19, a distance compensation insert 18 and a first carrier 12.

[0083] This fourth embodiment is similar to the exemplary second embodiment of a sensor arrangement according to the invention, as described in Fig. 3 as shown. Therefore, in Fig. 5 partially the same reference symbols as in Fig. 3 used.

[0084] The reset device 19 comprises a first rocker arm 29 and a second rocker arm 30.

[0085] Unlike Fig. 3 The reset device 19 shows in accordance with Fig. 5 does not include a first torsion spring 37 and a second torsion spring 38, but comprises a first spring 39 and a second spring 40, which are designed as metallic spiral tension springs, are arranged crossing each other and couple the first rocker arm 29 with the second rocker arm 30.

[0086] The first spring 39 is connected to a first pivot joint 33 on a top side of the first rocker arm 29 and to a second pivot joint 34 on a bottom side of the second rocker arm 30.

[0087] The second spring 40 is connected to a third pivot joint 35 on an upper side of the second rocker arm 30 and to a fourth pivot joint 36 on an underside of the first rocker arm 29.

[0088] The sensor 16 is arranged in a nominal state, i.e., not deflected. A gap is formed between the sensor 16 and a track 17. Due to gravity and the restoring forces of the first spring 39 and the second spring 40, which are tensioned via the first rocker arm 29 and the second rocker arm 30 when the sensor 16 is deflected, the sensor 16 is returned to its nominal state after deflection.

[0089] In Fig. 6 Figure 1 shows a side view of a section of an exemplary fifth embodiment of a sensor arrangement according to the invention, comprising a sensor 16, a reset device 19, a first support 12, a second support 13 designed as a mounting console and a distance compensation insert 18.

[0090] The first support 12 and the second support 13 are structurally and in terms of connection technology as in connection with Fig. 4 as described and executed. Therefore, in Fig. 6 partially the same reference symbols as in Fig. 4 used.

[0091] The reset device 19 is as described in connection with Fig. 5 described trained. Therefore, in Fig. 6 partially the same reference symbols as in Fig. 5 used.

[0092] Fig. 7 shows a side view of a section of an exemplary sixth embodiment of a sensor arrangement according to the invention with a sensor 16, a reset device 19 and a first carrier 12.

[0093] The first support 12 is connected to a chassis for a rail vehicle, as exemplified in Fig. 1 shown.

[0094] The sensor 16 is arranged at a short distance from a track 17 and is coupled to the first support 12 by means of the return device 19 in a pendulum and spring-like manner.

[0095] The reset device 19 comprises a first rocker arm 29, a second rocker arm 30, a third rocker arm 31 and a fourth rocker arm 32, a connecting spring 41, a first compression spring 27 and a second compression spring 28.

[0096] The first rocker arm 29 is articulated to the third rocker arm 31 via a first pivot joint 33 to form a first pair of levers 42, the second rocker arm 30 is articulated to the fourth rocker arm 32 via a second pivot joint 34 to form a second pair of levers 43.

[0097] The first pair of levers 42 and the second pair of levers 43 are articulated to the sensor 16 and articulated to the first support 12.

[0098] The first pair of levers 42 and the second pair of levers 43 are coupled to each other by means of the connecting spring 41, which is connected at one end to the first pivot joint 33 and at the other end to the second pivot joint 34. The connecting spring 41 is designed as a metallic tension spring and is parallel to a longitudinal axis 20 of the chassis, as exemplified in Fig. 1 is shown aligned.

[0099] The first compression spring 27 and the second compression spring 28 are connected on one side to the sensor 16 and on the other side to the first support 12 and are parallel to a chassis vertical axis 21, as exemplified in Fig. 1 is shown aligned.

[0100] If the sensor 16 makes contact with the track 17 or encounters an obstacle, it deflects from its position due to the return mechanism 19. Fig. 7 revealed nominal state (for example parallel to the chassis longitudinal axis 20 or in a plane formed by the chassis longitudinal axis 20 and the chassis vertical axis 21) and returns to its nominal state after deflection due to spring forces of the connecting spring 41, the first compression spring 27 and the second compression spring 28.

[0101] Fig. 8 Disclosing a side view of a section of an exemplary seventh embodiment of a sensor arrangement according to the invention, comprising a sensor 16, a spring-loaded return device 19, a rope-like emergency stop device 44, a distance compensation insert 18 and a first support 12.

[0102] The first support 12 is connected to a chassis, as exemplified in Fig. 1 is shown.

[0103] The spacer 18 is connected to an underside of the first support 12, and the return device 19 is connected to an underside of the spacer 18. The return device 19 is designed as an elastomer element which has spring and damping properties. According to the invention, however, it is also conceivable that the return device is designed, for example, as an elastomer-metal element, e.g., as a layer spring.

[0104] The sensor 16 is connected to an underside of the reset device 19, which is located in its Fig. 8 The nominal state shown is arranged at a distance from track 17.

[0105] The emergency stop device 44, which has a first cable 45 and a second cable 46, is connected to the distance compensation device 18 and the sensor 16. If the reset device 19 fails, the sensor 16 hangs from the first cable 45 and the second cable 46, thus preventing it from falling onto the track 17.

[0106] The emergency stop device 44 is also applicable in various versions of sensor applications, such as those found in Fig. 1 bis Fig. 7 are shown. According to the invention, it is also possible that the emergency release device 44 is not rope-like, but for example designed with emergency release levers. List of designations

[0107] 1 First wheelset 2 Second wheelset 3 First primary spring 4 Second primary spring 5 First wheelset bearing housing 6 Second wheelset bearing housing 7 First wheelset guide device 8 Second wheelset guide device 9 First wheelset guide bushing 10 Second wheelset guide bushing 11 Chassis frame 12 First support 13 Second support 14 First pendulum 15 First elastic bearing 16 Sensor 17 Track 18 Spacer shim 19 Return device 20 Chassis longitudinal axis 21 Chassis vertical axis 22 Coils 23 First side 24 Second side 25 Profile 26 Spring longitudinal axis 27 First compression spring 28 Second compression spring 29 First rocker arm 30 Second rocker arm 31 Third rocker arm 32 Fourth rocker arm 33 First pivot joint 34 Second pivot joint 35 Third pivot joint 36 Fourth pivot joint 37 First torsion spring 38 Second torsion spring 39 First spring 40 Second spring 41 Connecting spring 42 First pair of levers 43 Second pair of levers 44 Emergency release device 45 First cable 46 Second cable

Claims

1. Sensor arrangement comprising at least one sensor (16), wherein the sensor arrangement has a reset apparatus (19) which is connected on the one hand to the at least one sensor (16), and which on the other hand can be connected to a bogie for a rail vehicle with small spacing of the at least one sensor (16) from a track (17) and in a manner unsupported by the track (17), and which is set such that, after deflection from a nominal state to a deflected state when the at least one sensor (16) collides with a rail or with a foreign object on the rail, wherein the at least one sensor (16) can be moved at least in parallel with a bogie longitudinal axis (20), the at least one sensor (16) is again returned to the nominal state.

2. Sensor arrangement according to claim 1, characterised in that the reset apparatus (19) is embodied in a resilient manner.

3. Sensor arrangement according to claim 1 or 2, characterised in that the reset apparatus (19) is embodied in a pendular manner.

4. Sensor arrangement according to claim 2, characterised in that the reset apparatus (19) is designed as a wire rope isolator, the windings (22) of which are connected to at least one profile (25) on a first side (23) and on a second side (24) arranged opposite the first side (23), which profile is configured parallel to a spring longitudinal axis (26) of the reset apparatus (19) and is connected on the first side (23) to the at least one sensor (16) and is connected on the second side (24) to a bogie of a rail vehicle in particular.

5. Sensor arrangement according to claim 3, characterised in that the reset apparatus (19) comprises at least one first swing arm (29) and a second swing arm (30), which are connected in an articulated manner to the at least one sensor (16) and which can be connected in an articulated manner to a bogie for a rail vehicle in particular.

6. Sensor arrangement according to claim 5, characterised in that the first swing arm (29) and the second swing arm (30) are coupled to one another by way of a first spring (39) and a second spring (40) which are arranged in an intersecting manner.

7. Sensor arrangement according to claim 5, characterised in that the reset apparatus (19) comprises a third swing arm (31) and a fourth swing arm (32) which are connected in an articulated manner to the at least one sensor (16), wherein the third swing arm (31) is connected in an articulated manner to the first swing arm (29) to form a first pair of arms (42) and the fourth swing arm (32) is connected in an articulated manner to the second swing arm (30) to form a second pair of arms (43), and wherein the first pair of arms(42) and the second pair of arms(43) are coupled to one another by means of a connecting spring (41).

8. Sensor arrangement according to claim 2, characterised in that the reset apparatus (19) is designed as an elastomer element or an elastomer-metal element.

9. Sensor arrangement according to one of claims 1 to 8, characterised in that the emergency catch apparatus (44) is connected on the one hand to the at least one sensor (16) and on the other hand can be connected to a bogie for a rail vehicle in particular.

10. Sensor arrangement according to one of claims 1 to 9, characterised in that the sensor arrangement has at least one first support (12), which is connected on the one hand to the reset apparatus (19) and which can be connected on the other hand to a bogie for a rail vehicle in particular.

11. Sensor arrangement according to one of claims 1 to 10, characterised in that the at least one sensor (16) is designed as a measuring instrument for monitoring and / or diagnosing a track (17) or as a vehicle sensor of a train control system.

12. Bogie for a rail vehicle with at least one sensor arrangement according to one of claims 1 to 11, characterised in that at least one sensor (16) of the sensor arrangement can be moved at least in parallel with a bogie longitudinal axis (20).

13. Bogie according to claim 12, characterised in that the at least one sensor (16) is moveable in a plane which is formed by the bogie longitudinal axis (20) and a bogie vertical axis (21).

14. Bogie according to claim 12 or 13, characterised in that the at least one sensor arrangement is resiliently connected to at least one bogie structural component, parallel to a bogie vertical axis (21).

15. Bogie according to one of claims 12 to 14, characterised in that at least one spacer insert (18) is arranged between the at least one sensor arrangement and at least one bogie structural component.