Brake assembly

Abstract

A brake assembly (1) for a rail vehicle (3) comprises at least one brake element (15) for pressing against a rotor (17) of a rail vehicle wheel (7) in the event of a braking action, an actuator (13) for driving the brake element (15), a link (5) for transmitting a brake force from the actuator (15) to the brake element, at least one sensor device (8) for measuring at least one parameter of the brake assembly (1), and a trigger unit (9) which is configured to enter an activated state of the trigger unit when a braking action occurs, wherein the trigger unit (9) activates the sensor device (8) in the activated state.

Description

Technical Field

[0001] The present invention relates to a brake assembly for rail vehicles, particularly for unpowered rail vehicles such as storage cars or cargo cars. Background Technology

[0002] Traditional rail vehicle braking systems include: multiple brake pads; a mechanical linkage assembly connected to the brake pads to press the brake pads against the rail vehicle's wheels when the linkage is moved to the braking position; and a pneumatically operated brake cylinder that, when actuated, moves the mechanical linkage to its braking position. The rail vehicle braking system also includes a manually operated handbrake within the rail vehicle, which moves its mechanical linkage to the braking position. The handbrake is applied when the train is "parked" to prevent movement of the train or rail vehicle, especially when it has not been engaged with the locomotive for a period of time. Then, when the locomotive is re-engaged, the handbrake is manually released, and the braking system is recharged, allowing the braking system in the rail vehicle to be controlled again by its pneumatic brake cylinder.

[0003] WO 2019 / 2020 32 A1 describes a rail vehicle braking system having a monitoring system including a sensing module for measuring the dislocations of different parts of the brake regulator assembly relative to each other. This monitoring module includes a battery or an energy harvesting power module. However, this known monitoring system has high power consumption. Therefore, monitoring systems using batteries are not reliable enough between normal maintenance intervals that may last for months or even years. The use of energy harvesting power modules has been shown to be disadvantageous because of the risk of errors in the power supply unit and because it is economically impractical to retrofit a large number of unpowered freight cars with energy harvesting components. Summary of the Invention

[0004] The object of the present invention is to provide a brake assembly that overcomes the shortcomings of the prior art, particularly for unpowered storage compartments or cargo compartments, and in particular to provide a brake assembly having sensors for reliable monitoring over extended periods in a particularly energy-efficient manner, having a limited local power supply (such as a battery), or having a cost-effective energy harvesting component.

[0005] Therefore, a brake assembly is provided for rail vehicles, particularly unpowered rail vehicles, preferably storage cars or cargo cars. The cargo car may be an unpowered cargo car, and the monitoring system is preferably entirely mounted on the unpowered cargo car. The brake assembly includes at least one braking element for pressing against the rotor of the rail vehicle wheel during braking. The braking element can be implemented as a brake pad, brake disc, or brake block. The invention may relate to a brake assembly comprising a braking element that is a brake block, brake disc, or brake pad. In a preferred embodiment, the braking element is a brake pad or brake disc adapted to press against the tire tread or against a brake disc. In one embodiment, the brake pad or brake disc belongs to a disc braking system, whereby the brake pad or brake disc presses against the brake disc or laterally against the wheel. In an alternative embodiment, the braking element is a brake pad, which preferably belongs to a disc braking system, whereby the brake pad presses against the brake disc. In different embodiments of the invention, the braking element may relate to any kind of friction-based braking. The rotor corresponding to the braking element can be a tire tread, such as the tread of a rail vehicle wheel, or a brake disc firmly attached to a rail vehicle wheel. The brake assembly also includes an actuator (preferably a pneumatic or hydraulic actuator) for driving the braking element, and a linkage for transmitting braking force from the actuator to the braking element. The brake assembly is actuated by the actuator. In particular, the actuator includes a brake cylinder and a piston. This actuation is based on compressed air for a pneumatic actuator. Alternatively, the assembly includes a hydraulic actuator that uses a hydraulic actuation fluid, such as oil, to provide pressure to the hydraulic actuator.

[0006] The brake assembly also includes at least one sensor device for measuring at least one parameter of the brake assembly. The parameter of the brake assembly may include, but is not limited to, parameters related to brake wear. Alternatively or additionally, the parameter of the brake assembly may be related to the flow rate and / or pressure of the hydraulic or pneumatic actuation fluid of the actuator. The brake assembly may include one or more other sensor devices for measuring one or more other parameters of the brake assembly, wherein these other sensor devices may include accelerometers, temperature sensors, humidity sensors, etc.

[0007] According to the invention, the brake assembly further includes a trigger unit configured to enter an active state upon braking action. In the active state, the trigger unit activates a sensor device. Preferably, the trigger unit is configured to sense changes in the stroke force and / or stroke movement of the actuator, the linkage attached to the actuator, and / or one or more braking elements attached to the linkage. The trigger unit may be structurally designed to enter its active state after a minimum movement threshold of one or more moving parts of the linkage occurs. Alternatively or additionally, the trigger unit may be designed to enter its active state when a minimum threshold force, minimum threshold deformation, and / or minimum threshold stress is reached acting on a predetermined point in the actuator, the linkage, and / or at least one braking element. Particularly preferred is that the trigger unit senses braking action at its inception, enabling it to activate or deactivate the sensor device, allowing the sensor device to perform one or more measurements of one or more parameters during braking action. The sensor device may preferably be triggered by the trigger unit to take one or more measurements of one or more parameters of the brake assembly when maximum braking force and / or maximum dislocation of the braking element occurs during braking action. In particular, the trigger unit can have a negative (off) state, wherein the trigger unit idles or turns off the sensor device.

[0008] In one embodiment, the trigger unit is connected to the link. Specifically, the trigger unit may be attached to the link. Preferably, the trigger unit is securely attached to a movable or stationary part of the link. By providing the trigger unit directly to the link, the trigger unit can directly detect any movement, deformation, force, and / or stress acting on the link.

[0009] In another embodiment that can be combined with one of the foregoing embodiments, the linkage includes at least one brake adjuster device for adjusting the linkage according to the wear level of at least one braking element, wherein, in particular, a trigger is connected to the linkage, particularly attached to, or disposed on the linkage or brake adjuster device, between the brake adjuster device and the actuator. The trigger unit can readily detect a triggering event initiated by the actuator that causes the trigger unit to be activated. In this document, the term "brake adjuster device" refers to a device for automatically adjusting the clearance between the braking element and the wheel. A brake slack adjuster is an example of such a brake adjuster device. The brake adjuster device forms a bridge between the braking element (preferably the brake pad) and the actuator, and provides overall mechanical control of the brake. The brake adjuster device contributes to the proper operation of the brake by absorbing the wear level of the braking element, such that equal forces from mechanical control produce a corresponding braking effect on the wheel-related impact surface, regardless of the wear level of the braking element. The feature here is that the brake adjuster includes a first portion at one end and a second portion at the other end, the first portion and the second portion further moving apart as the brake element experiences more wear. In a preferred embodiment, the first portion and the second portion engage in a sliding fit (e.g., a telescopic sliding fit).

[0010] In a particular embodiment of the brake assembly, the trigger unit is configured to enter its activated state upon detecting linkage displacement. Linkage displacement can be detected, for example, by the trigger unit via a mechanical switch that causes a change in its switching state once a predetermined displacement threshold is overcome by, in particular, a movable linkage component.

[0011] The linkage may include a brake actuation device that connects the actuator to the regulator assembly and / or the regulator assembly to the braking element. The brake actuation device includes a brake beam, a lever of the brake actuation device, and / or a brake operating lever. Preferably, the brake assembly further includes a brake actuation device. Preferably, the brake actuation device is configured to connect the actuator to the brake regulator assembly.

[0012] In a further development, the trigger unit is configured to enter its activated state upon detecting displacement of a first movable part of the link relative to a stationary part of the link (e.g., the mounting section connecting the link to the rail vehicle). Additionally or alternatively, the trigger unit is limited to activating its activated state upon detecting displacement of the first movable part of the link relative to a second movable part of the link. Additionally or alternatively, the trigger unit may be configured to enter its activated state upon detecting displacement of the first movable part of the link relative to a stationary part of the rail vehicle (e.g., the rail vehicle chassis).

[0013] In a further development, the trigger unit is configured to detect displacement between the brake modulator device and stationary components of the linkage system. Specifically, the trigger unit is attached to the brake modulator device. Both the sensor device and the trigger unit can be attached to the brake modulator device. This allows the trigger unit to be positioned very close to its activated sensor device, which is preferably a sensor device for measuring parameters associated with the brake modulator device, such as a set distance depending on the current wear condition of one or more braking elements.

[0014] In one embodiment of the brake assembly that can be combined with one of the foregoing embodiments, the trigger unit includes a switch, particularly a microswitch, which includes a relay preferably mechanically actuated for turning the electronic circuitry on and / or off. The switch (e.g., a mechanical microswitch) can provide the brake assembly with a very robust component for implementing the trigger unit, allowing the trigger unit to reliably activate the sensor device, particularly during extended intervals between rail vehicle maintenance.

[0015] According to further development, the trigger unit includes a trigger rod that can move between a first position and a second position according to displacement, wherein the trigger rod is in its first position and braking action is performed, and / or wherein a protrusion connected to the trigger rod engages an electromechanical shut-off member of a relay in the first or second position, wherein in particular, the trigger unit also includes a mechanism for biasing the trigger rod toward the first or second position.

[0016] In one embodiment that can be combined with one or more of the foregoing embodiments, the sensor device includes a transmitter for transmitting, in particular, parameters of the brake assembly to a sensor hub of the rail vehicle, wherein the transmitter is preferably activated only in an active state. A preferred embodiment of the sensor hub is described in the applicant's application EP 3 608 184 A1, the entire contents of which are incorporated herein by reference.

[0017] In one embodiment, the sensor device includes a link position sensor, specifically for determining the position of a first part of the link relative to a second part of the link.

[0018] In further development, the position sensor measures the distance between two reference points of the brake regulator device.

[0019] In another further development of a brake assembly that can be combined with one or more of the foregoing embodiments, the brake adjuster device includes a hollow tube that receives a bracket for attaching the brake adjuster device to a linkage and a movable adjusting member (e.g., a threaded spindle), wherein a position sensor determines the distance between the spindle and the bracket.

[0020] Additionally or alternatively, in further developments of brake assemblies that include a position sensor as a sensor device, the position sensor is preferably activated only in an active state.

[0021] In another further development of the brake assembly that can be combined with one of the above embodiments, the sensor device includes a computing device and a data storage device, wherein the computing device is activated only in an active state, and wherein the computing device is configured to calculate parameters indicating brake wear, particularly based on measurements from a position sensor, and to cause the transmitter to send these parameters indicating brake wear. When monitoring the wear of the braking element, it is important to also consider the wear of the wheel. The dislocation change between the first and second parts depends not only on the wear of the braking element but also on the wear of the wheel. Certain events can produce significant changes in wheel diameter that could not previously be considered by passive measurement but only by actual inspection. Such events are, for example, high-intensity brake operation. In particular, in braking events where the wheel continues to slide along the track in a locked position (so-called "wheel flattening"), thereby rubbing a portion of its cover at a fixed position, this ensures that the wheel is immediately re-grinded to a round shape, which, of course, significantly affects the wheel diameter. Another event is routine maintenance, typically every 600,000 km or every 12 years (whichever comes first), which includes wheel re-grinding. When replacing worn brake elements with new ones, the aforementioned wheel wear must also be taken into account. The brake adjuster must compensate for the changed distance between the wear-resistant contact surfaces of the brake elements and the wear-resistant surfaces of the wheel. Attached Figure Description

[0022] In the following description, particular embodiments of the invention are described in more detail with reference to the accompanying drawings.

[0023] Figure 1 A schematic diagram of a cargo car having a brake assembly according to the invention is shown;

[0024] Figure 2 A schematic diagram of a brake assembly according to the present invention is shown;

[0025] Figure 3 A cross-section of a brake assembly according to the invention, including a brake regulator, is shown; and

[0026] Figure 4 Show attached to Figure 3 Detailed view of the sensor unit and trigger unit of the brake regulator in the brake assembly. Detailed Implementation

[0027] For ease of understanding, in the following description showing the illustrations of embodiments of the present invention, the same or similar parts are indicated by the same or similar reference numerals.

[0028] In the following description of exemplary embodiments of the invention as illustrated in the accompanying drawings, the brake assembly according to the invention is generally referred to by reference numeral 1. The brake assembly 1, as its main constituent elements, includes an actuator 13 for driving a brake element 15, a linkage 5 for transmitting braking force from the actuator 13 to the brake element 15, at least one sensor device 8, and a trigger unit 9.

[0029] Figure 1 A rail vehicle 3, implemented as a non-powered storage car, is shown, equipped with a brake assembly 1 according to the invention. The storage car 3 is equipped with two sets of four rail vehicle wheels 7. Each rail vehicle wheel 7 can interact with a corresponding braking element, which in this case is implemented as a corresponding brake block 15 arranged facing the tread 17 of the rail vehicle wheel 7. When the rail vehicle 3 moves behind the power locomotive, the brake disengages, so that the braking element 15 does not engage the rail vehicle wheel 7, thereby not impairing the movement of the vehicle. When braking occurs, each brake block 15 pushes against the corresponding tread 17 of the corresponding rail vehicle wheel 7 to apply friction on the surface of the tread 17 to decelerate the rail vehicle 3.

[0030] A pneumatic cylinder actuator 13 is provided on the rail vehicle 3. This pneumatic cylinder actuator can be controlled to provide mechanical force to the braking element 15 via the connecting rod 5. When pressure is input to the pneumatic cylinder actuator 13, it can push against the brake operating lever 56 to input the braking force from the actuator 13 into the connecting rod 5. Figure 2 As shown, link 5 may include a brake actuation device 57, which includes rods 54, 55, 59, a control lever 56, and a beam 58. Brake actuation device 57 is attached to vehicle 3 via mounting section 37. Mounting section 37 and other components that interact with brake actuation device 57 and are stationary relative to rail vehicle 3 can be described as stationary components of link 5. Movable components of link 5 typically include brake actuation device 57 and its components.

[0031] As in Figure 2 In and more in Figure 3 and Figure 4As shown in the illustration, in the illustrated embodiment, the linkage 5 of the brake assembly 1 according to the invention includes a brake adjuster device 51, which is implemented as a so-called brake clearance adjuster. The brake adjuster device 51 forms one of the movable parts of the brake linkage 5 for transmitting braking force from the actuator 13 to the brake element 15. The brake adjuster device 51 can be configured to adjust the linkage 5 according to the wear level of at least one brake element 15. Due to wear, the free distance between the brake pad 15 and the corresponding tread 17 of the rail wheel 7 increases, and the brake adjuster device 51 or brake clearance adjuster can be configured to allow this increased free distance, such that regardless of the current wear condition of the brake element 15, the braking force provided by the actuator 13 always produces the same braking effect on the rail vehicle wheel 7.

[0032] The rail vehicle 3 may be further equipped with one or more sensor devices 8, which are capable of and configured to measure at least one parameter of the brake assembly 1. In this embodiment, a specific sensor device 8, including a position sensor 81, will be described in more detail below. Figure 4 As shown in detail, the sensor device 8 may include multiple components, such as a computing device 85, a data storage device 87, and a transmitter 83. The computing device 85 may cooperate with the data storage device 87 to store measurement data collected from sensors (such as position sensor 81) and / or store analytical functions. The computing device 85 may be configured to perform analytical functions on the measurement data collected by the sensors to determine analytical data, particularly analytical data regarding brake wear.

[0033] The computing device 85 may be further configured to transmit and / or receive data via transmitter 83. For example, the computing device 85 may be configured to transmit data related to measurement data and / or analysis data via transmitter 83. Transmitter 83 may include an antenna, such as a WiFi antenna or a Bluetooth antenna. The sensor hub 38 of the rail vehicle 3 may receive data transmitted from the computing device 85 via transmitter 83. The sensor hub 38 of the rail vehicle 3 may be disposed on the rail vehicle 3 and configured to communicate with one or more sensor devices 8 via wired or wireless communication. The sensor hub 38 may further include a communication mechanism for communicating with one or more remote systems, such as cloud-based controllers and / or diagnostic systems (not shown in detail).

[0034] The brake assembly 1 includes a trigger unit 9, which has a passive state (off) and an active state (on). The trigger unit 9 is configured to enter its active state when braking occurs. In the active state, the trigger unit 9 activates the sensor unit 8. The trigger unit 9 is activated at the start of the stroke of the actuator 13 to wake up the sensor unit 8, allowing it to begin measuring during braking (particularly when full braking occurs). In the active state, the trigger unit 9 activates the sensor unit 8. In the passive state, the trigger unit 9 is configured not to activate the sensor unit 8. The trigger unit 9 can be configured to leave the sensor unit 8 idle in the passive state or to enter an inactive state in an active manner. In this embodiment, the trigger unit 9 is configured to leave the sensor unit 8 idle in the passive state, such that in the passive state, the trigger unit 9 does not affect whether the sensor unit 8 remains active, whether the sensor unit 8 changes from active to inactive, or whether the sensor unit 8 remains inactive. For example, sensor unit 8 can be configured to wake up independently of activation by stroke detector 9 (e.g., at regular intervals, such as every 30 minutes). In a preferred embodiment, sensor unit 8, position sensor 81, computing device 85, and / or transmitter 83 can be configured to wake up in response to at least one triggering event other than activation by stroke detector 9 (e.g., a timed triggering event).

[0035] The computing device 83 may be configured to perform at least one of the following actions when activated by the trigger unit 9: (i) performing one or more measurements using a sensor, (ii) performing one or more analysis functions based on the measurements, and / or (iii) transmitting measurement data and / or analysis data via the transmitter 83.

[0036] In this embodiment, sensor device 8 may be configured to deactivate itself after a predetermined time and / or after one or more predetermined actions have been performed, such as entering a sleep mode or a shutdown mode. Computing device 83 may be configured to deactivate sensor device 8 again after performing at least one of the above actions (i), (ii), and / or (iii). Alternatively or additionally, computing device 83 may be configured to run a timer for a predetermined amount of time, such as 20 seconds, before deactivating sensor device 8 again.

[0037] like Figure 2 and 3As shown, linkage 5 includes a longitudinally movable brake adjuster device 51 attached to two brake actuators, rods 54 and 55, which are translatably movable relative to each other to set the adjuster device 51. In any given configuration of the adjuster device 51, its first rod 54 and second rod 55 are securely connected to each other. The first rod 54 of the brake actuator is coupled to a brake actuator lever 56 attached to the actuator 13. The first rod 54 of the brake actuator is slidably engaged by a support member 37 stationary relative to the carriage 3. The second rod 55 of the actuator is attached to a brake actuator 57, which includes a beam 58, a rod 59, and a lever 56 for transmitting braking force from the brake adjuster device 51 to the brake element 15.

[0038] exist Figure 2 and Figure 3 In the illustrated embodiment, sensor device 8 and trigger unit 9 are attached to brake regulator device 51. Trigger unit 9 is configured to detect any relative movement of the first lever 54 of the brake transmission device relative to the stationary support member 37. When the first lever 54 of the brake transmission device moves relative to the stationary support member 37, trigger unit 9 enters its activated state. In the activated state, trigger unit 9 activates sensor unit 8.

[0039] exist Figure 4 The sensor unit 8 shown in detail includes a position sensor 81. The position sensor 81 is configured to detect the current setting of the brake adjuster device 51. In the illustrated embodiment, the position sensor 81 is coupled to a first rod 54 of the transmission mechanism. The position sensor 81 is implemented as an optical sensor, attached to a bracket 65 of the first rod 54 arranged within a hollow tube 52. The optical position sensor 81 cooperates with a reflector attached to a main shaft 61, which serves as a movable adjustment member of the adjuster device 51. The position sensor 81 measures the distance d between the light emitter and the reflector of the sensor 81. In another alternative, not shown in detail, a tension wire can be used, employing the same principle externally.

[0040] For example, at the end of a braking cycle and / or when the braking force reaches its maximum value, sensor unit 8 can use distance sensor 81 to measure and determine the distance d from the end of the threaded spindle 61 of the clearance adjuster 51. Calculation unit 83 can transmit the distance d to sensor hub 38 via transmitter 83, allowing the wear of brake pad 15 to be calculated based on the distance d. The distance d and / or the corresponding brake wear can be transmitted from sensor hub 38 to a server via satellite or radio transmission, where it can be stored for further evaluation.

[0041] The trigger unit 9 is securely attached to the first lever 54 of the regulator device 51. The trigger unit 9 includes a trigger rod 95 movable in a translational direction m, which is preferably parallel to the axial direction of the regulator device 51. The trigger rod 95 engages the component 37 of the connecting rod 5 that is stationary relative to the rail vehicle 3. The trigger rod 95 can move between a first position and a second position depending on the displacement of the connecting rod during braking. In the first position, no braking action occurs, and when braking action occurs, it is in the second position. Figure 4 The lever 95 is shown in the second position. A biasing mechanism 97 pushes the lever 95 to the first position. The trigger lever 95 is coupled to a protrusion 96 of a mechanical switch 91 for engaging a relay 93. The relay 93 is configured to activate a wake-up switch for the sensor unit 8. Specifically, the relay 93 can be configured such that the trigger unit 9 is in a negative state, in which the switch 91 is pressed and enters an active state once the switch 91 is released.

[0042] At the start of braking, as the lever 56 is pushed by the actuator piston 13, the first lever 54 of the transmission is pulled by the lever 56 and thus rotates about the kingpin held by the stationary support 37. During the translational movement of the lever 54, the trigger rod 95 of the trigger unit 9, which is fixed to the lever 54, moves away from the stationary support ring 37 connected to the chassis of the vehicle 3. Therefore, the trigger rod 91 and the protrusion 96 attached to the trigger rod move relative to the lever 54, such that the protrusion 96 presses the switch 94, which is stationary relative to the lever 54 of the braking transmission. This causes the switch 94 to activate the relay 93, thereby activating the sensor unit 8.

[0043] List of reference numerals

[0044] 1. Brake assembly

[0045] 3. Rail vehicles

[0046] 5-link

[0047] 7. Rail vehicle wheels

[0048] 8. Sensor Device

[0049] 9. Trigger Unit

[0050] 13 Actuators

[0051] 15 Braking components

[0052] 17 Tread

[0053] 37. Stationary components

[0054] 38 Sensor Center

[0055] 51 Brake Adjuster Device

[0056] 54, 55, 59 Brake transmission device levers

[0057] 56. Control lever of the brake transmission device

[0058] 57 Braking transmission device

[0059] 61 Adjustment component

[0060] 65 bracket

[0061] 58. Beam of the braking transmission device

[0062] 81 Position Sensor

[0063] 83 transmitter

[0064] 85 Computing Device

[0065] 87 Data storage devices

[0066] 91 Switch

[0067] 93 Relay

[0068] 95 trigger lever

[0069] 96. Protrusion

[0070] 97 Springs

[0071] d distance

Claims

1. A brake assembly (1) for a rail vehicle (3), the brake assembly comprising: At least one braking element (15) for pressing against the rotor (17) of the rail vehicle wheel (7) under braking action. Actuator (13) for driving the braking element (15); Linkage (5) for transmitting braking force from the actuator (15) to the braking element. At least one sensor device (8) for measuring at least one parameter of the brake assembly (1). The brake assembly (1) further includes a trigger unit (9) configured to enter an active state when a braking action occurs, wherein the trigger unit (9) activates the sensor device (8) in the active state, wherein the sensor device (8) includes a wireless transmitter (83) for transmitting at least one parameter of the brake assembly (1) to the sensor hub (38) of the rail vehicle, wherein the wireless transmitter (83) is activated only in the active state and / or by at least one trigger event.

2. The brake assembly (1) according to claim 1, characterized in that, The trigger unit (9) is connected to the link (5).

3. The brake assembly (1) according to claim 1 or 2, characterized in that, The link (5) includes at least one brake adjuster device (51) for adjusting the link (5) according to the wear level of the at least one brake element (15).

4. The brake assembly (1) according to claim 3, characterized in that, The trigger unit (9) is connected to the link (5) between the brake regulator device (51) and the actuator (13).

5. The brake assembly (1) according to claim 1 or 2, characterized in that, The trigger unit (9) is configured to enter the activated state when a link displacement is detected.

6. The brake assembly (1) according to claim 5, characterized in that, The trigger unit (9) is configured to enter an activated state when it detects displacement of the first movable part of the link (5) relative to the stationary part of the link, relative to the second movable part of the link (5) and / or relative to the stationary part of the rail vehicle (3).

7. The brake assembly (1) according to claim 6, characterized in that, The stationary component of the link is the mounting section (37) that connects the link (5) to the rail vehicle (3).

8. The brake assembly (1) according to claim 6, characterized in that, The stationary component of the rail vehicle (3) is the rail vehicle chassis.

9. The brake assembly (1) according to claim 3, characterized in that, The trigger unit (9) is configured to detect the displacement between the brake regulator device (51) and the stationary component of the linkage system (57).

10. The brake assembly (1) according to claim 3, characterized in that, The trigger unit (9) is attached to the brake regulator device (51).

11. The brake assembly (1) according to claim 1 or 2, characterized in that, The trigger unit (9) includes a switch, which includes a relay (93) for turning on and / or off electronic circuitry.

12. The brake assembly (1) according to claim 11, characterized in that, The switch is a miniature switch.

13. The brake assembly (1) according to claim 11, characterized in that, The relay (93) is mechanically actuated.

14. The brake assembly (1) according to claim 11, characterized in that, The trigger unit (9) includes a trigger rod (95) movable between a first position and a second position, wherein the trigger rod (95) is in its first position without braking, and / or wherein, in the first position or the second position, a protrusion (96) connected to the trigger rod (95) engages the electromechanical shut-off member of the relay.

15. The brake assembly (1) according to claim 14, characterized in that, The trigger unit (9) further includes a mechanism (97) for biasing the trigger rod (95) toward the first position or the second position.

16. The brake assembly (1) according to claim 1 or 2, characterized in that, The sensor device (8) includes a link position sensor (81).

17. The brake assembly (1) according to claim 16, characterized in that, The link position sensor is used to determine the position of the first part of the link (5) relative to the second part of the link (5).

18. The brake assembly (1) according to claim 16, characterized in that, The link (5) includes at least one brake adjuster device (51) for adjusting the link (5) according to the wear level of the at least one brake element (15); the link position sensor (81) measures the distance between two reference points of the brake adjuster device (51).

19. The brake assembly (1) according to claim 16, characterized in that, The link position sensor (81) is activated only in the active state and / or by at least one trigger event.

20. The brake assembly (1) according to claim 16, characterized in that, The sensor device (8) includes a computing device (85) and a data storage device (87).

21. The brake assembly (1) according to claim 20, characterized in that, The computing device (85) is activated only in the active state and / or by at least one triggering event.

22. The brake assembly (1) according to claim 20, characterized in that, The computing device (85) is configured to calculate parameters indicating brake wear based on measurements from the link position sensor (81) and to cause the transmitter to send the parameters indicating brake wear.

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