US20220258777A1 - Vehicle braking system comprising brake rigging, and vehicle equipped with such a system - Google Patents
Vehicle braking system comprising brake rigging, and vehicle equipped with such a system Download PDFInfo
- Publication number
- US20220258777A1 US20220258777A1 US17/628,548 US202017628548A US2022258777A1 US 20220258777 A1 US20220258777 A1 US 20220258777A1 US 202017628548 A US202017628548 A US 202017628548A US 2022258777 A1 US2022258777 A1 US 2022258777A1
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- United States
- Prior art keywords
- lining
- braking system
- mounting
- vehicle
- vehicle braking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005540 biological transmission Effects 0.000 claims description 45
- 230000000903 blocking effect Effects 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
- B61H13/34—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
- B61H13/34—Details
- B61H13/36—Beams; Suspension thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/2245—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members in which the common actuating member acts on two levers carrying the braking members, e.g. tong-type brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
- F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
- F16D65/183—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with force-transmitting members arranged side by side acting on a spot type force-applying member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D69/0408—Attachment of linings specially adapted for plane linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2127/00—Auxiliary mechanisms
- F16D2127/06—Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
Definitions
- the inventive subject matter concerns the field of vehicle brakes. More particularly, the inventive subject matter concerns a braking system for a rail vehicle having brakes with at least one lining, provided with a braking linkage and with a service brake and/or parking brake configured to act on the braking members of the vehicle, for example such as brake disks, via the braking linkage.
- Rail vehicles having brakes with at least one lining are generally equipped with braking systems having service brake and/or parking brake cylinders.
- the braking systems include a piston movable under the effect of a fluid under pressure. Movement of the piston actuates a braking linkage and drives a braking action, such as the clamping of a brake disk by the lining of that linkage.
- the braking system is mounted on the rail vehicle to be in contact with the brake disks or the wheels.
- the braking system may be mechanically connected to a bogie, to an axle fastened to the bogie, or to another device like the drive motor or the gearbox also mounted on the bogie.
- the braking action gives rise to braking forces which may be transmitted, via the braking linkage, to the mounting to which the braking system is mechanically connected. These forces may generate deformations, or at least movements, of the braking linkage relative to the brake disk of the vehicle, thereby giving rise to irregular wear of the lining.
- the inventive subject matter concerns a braking system for a vehicle having brakes with at least one lining.
- the braking system includes an improved braking linkage, while being simple, convenient, and economical.
- the inventive subject matter thus relates to a rail vehicle braking system comprising a braking linkage and a service brake and/or parking brake configured to act on at least one braking member of the rail vehicle via the braking linkage.
- the linkage is provided with at least one device having at least one lining mounting and at least one lining mechanically connected to the at least one lining mounting, and with at least one lever extending from the service brake and/or parking brake to the device.
- the at least one lever is mechanically connected to the at least one lining mounting, on an attachment region thereof which is located away from the at least one lining and which is at most 35 millimeters (mm) from a transverse central axis of the device.
- the loads applied by the lever of the braking linkage on the device for that linkage to place the linkage in contact with the braking member of the vehicle, for example in particular a brake disk, are substantially centered on the lining mounting.
- the lining mounting can self-tilt to adapt to the type of braking system and/or to the conditions of use of the rail vehicle.
- the arrangement of the braking linkage of which the form, the arrangement, and/or the materials of the lining mounting and/or of the linings; the fact of whether the braking linkage is a parking brake or else a service brake; the type of vehicle (tram, subway train, high-speed train, etc.); the load of the vehicle, the journey made by the vehicle; and/or the type of braking member (diameter, thickness, material of the disk) may be parameters that enable the lining mounting to optimally locate.
- the attachment region may be located between approximately 0 and 35 mm from the transverse central axis of the device.
- the attachment region may extend in a longitudinal general orientation of the device and over a length comprised between approximately 15 mm and approximately 70 mm.
- the attachment region may extend uninterruptedly on opposite sides of the transverse central axis of the device.
- the at least one attachment region may extend interruptedly on opposite sides of the transverse central axis of the device.
- the system may comprise at least one force transmission link member mechanically connected at a first end to a mounting of the vehicle and at a second end, which is an opposite end to the first end, to the at least one lining mounting, in immediate proximity to the attachment region of the at least one lever.
- the at least one force transmission link member may be substantially L-shaped, or S-shaped.
- the at least one force transmission link member may extend substantially in a same plane as that in which extends the at least one lever.
- the at least one force transmission link member may be mechanically connected by pivotal connections respectively to the vehicle mounting and to the at least one lining mounting.
- the at least one force transmission link member may have an added functional clearance at its second end where it is connected to the at least one lining mounting.
- the at least one force transmission link member may be connected via a rotary joint to the at least one lining mounting.
- the at least one force transmission link member may be connected to the at least one lining mounting via a pivotal shaft pivoting in an aperture of considerably greater diameter than that of the pivotal shaft, or in an oblong aperture.
- the device may comprise at least two bearing regions for bearing on the at least one braking member and at least one set back region located between the two the bearing regions.
- Such bearing and set back regions are configured to distribute the transmission of the forces over the braking member. These regions are quite different from any regions for fastening the linings onto the lining mounting, these latter not being configured to distribute the transmission of the forces over the braking member.
- the at least one lining mounting and/or the at least one lining may have a longitudinal general orientation and a transverse general orientation, with the bearing and set back regions succeeding each other in the longitudinal general orientation.
- the system may comprise at least two linings mechanically connected to the lining mounting, at least one the bearing region being located facing opposite the respective lining.
- the at least two bearing regions and the at least one set back region may be provided on the at least one lining mounting.
- the at least two bearing regions and the at least one set back region may be provided on the at least one lining.
- the device may comprise plural bearing regions between which are formed the set back regions.
- the at least one lining mounting and/or the at least one lining may have a longitudinal general orientation and a transverse general orientation, with the bearing and set back regions succeeding each other in the longitudinal general orientation. At least one the bearing and/or set back region may extend fully or only partly along the transverse general orientation.
- the bearing and set back regions are provided substantially symmetrically relative to a transverse central axis of the device. This axis may for example constitute a median axis of the braking member of the rail vehicle.
- the inventive subject matter also relates to a rail vehicle comprising at least one braking member, for example in particular a brake disk, and at least one rail vehicle braking system as described above, which is configured to act on the at least one braking member.
- a rail vehicle comprising at least one braking member, for example in particular a brake disk, and at least one rail vehicle braking system as described above, which is configured to act on the at least one braking member.
- FIG. 1 is a diagrammatic and partial illustration of a rail vehicle braking system provided in particular with a service brake, a parking brake and with a control and actuation unit.
- FIG. 2 is a partial and diagrammatic representation of the system illustrated in FIG. 1 , mechanically connected to an axle for a bogie of a rail vehicle comprising such a rail vehicle braking system.
- FIG. 3 is a diagrammatic representation of a lining mounting according to a first embodiment of the rail vehicle braking system of FIG. 1 , which lining mounting is mounted facing opposite a first face of a brake disk also illustrated in FIG. 1 .
- FIG. 4 is a cross section view on IV-IV of FIG. 3 ;
- FIG. 5 is a diagrammatic representation of a contact face of the lining mounting illustrated in FIG. 3 .
- FIG. 6 diagrammatically illustrates linings facing opposite the first face of the brake disk, which linings are provided to be carried by the lining mounting.
- FIG. 7 is a similar view to that of FIG. 4 , showing a first variant embodiment of the lining mounting.
- FIG. 8 is a similar view to that of FIG. 5 , showing the first variant embodiment of the lining mounting.
- FIG. 9 is a similar view to that of FIG. 6 , the linings being mounted on the first variant embodiment of the lining mounting.
- FIG. 10 is a similar view to that of FIG. 3 , showing a lining mounting according to a second embodiment of the rail vehicle braking system of FIG. 1 .
- FIG. 11 is a cross section view on XI-XI of FIG. 10 ;
- FIG. 12 is a diagrammatic representation of a contact face of the lining mounting illustrated in FIG. 10 .
- FIG. 13 is a similar view to that of FIG. 6 .
- FIG. 14 is a similar view to that of FIG. 11 , showing a first variant embodiment of the lining mounting according to the second embodiment of the system.
- FIG. 15 is a similar view to that of FIG. 12 , showing the first variant embodiment of the lining mounting according to the second embodiment of the system.
- FIG. 16 is a similar view to that of FIG. 10 , showing a force transmission link member mechanically connected to the lining mounting.
- FIG. 17 is a similar view to that of FIG. 14 , with addition of the force transmission link member.
- FIG. 18 is a similar view to that of FIG. 11 , with addition of the force transmission link member.
- FIG. 19 is a similar view to that of FIG. 4 , showing a lining mounting according to a third embodiment of the rail vehicle braking system, with the force transmission link member.
- FIG. 20 shows a mechanical interconnection between a lining mounting and a force transmission link member, in a first position of the latter.
- FIG. 21 is a similar view to that of FIG. 20 , the force transmission link member being in a second position.
- FIG. 22 illustrates a variant embodiment of the force transmission link member.
- FIG. 1 diagrammatically represents a vehicle braking system 1 for a vehicle having a brake with linings.
- vehicle braking system 1 is a vehicle braking system structurally of the type described in European patent application EP 2 826 684.
- the vehicle braking system 1 comprises a body 2 forming a cylinder of both a service brake 6 and a parking brake 7 , a control and actuation unit 3 configured to manage the operation of the service brake 6 and of the parking brake 7 , a conveyance network of pneumatic pipes that is connected to the body 2 and to the control and actuation unit 3 , and a braking linkage 4 mechanically linked to the body 2 .
- the body 2 has the form of a generally closed envelope.
- the service brake 6 comprises a service brake piston 8 movable relative to the body 2 in a first axial direction, and a thrust rod 9 also movable relative to the body 2 in a second axial direction perpendicular to the first axial direction. Together with the body 2 , the braking piston 8 delimits a service brake pressure chamber 13 .
- the braking piston 8 has two sides respectively a first side 17 configured to act on the braking linkage 4 via the thrust rod 9 and a second side 18 which is an opposite side to the first side 17 and which is turned towards the service brake pressure chamber 13 .
- the service brake 6 further comprises a notched rod 21 fastened to the second side 18 of the braking piston 8 . This notched rod 21 extends longitudinally in the first axial direction.
- the braking piston 8 is configured to move in the body 2 while maintaining the service brake pressure chamber 13 relatively fluid-tight thanks to a membrane 14 , for example formed by a seal, disposed between that braking piston 8 and inside edges of the body 2 .
- the service brake 6 may further comprise a wedge part 10 fastened to the first side 17 of the braking piston 8 .
- This wedge part 10 may have a triangular section and be configured to cooperate with a set of rolling bearing stops 11 , of which one of the rolling bearing stops may be linked to the body 2 while the other of the rolling bearing stops may be linked to the thrust rod 9 .
- This thrust rod 9 may be provided with a wear adjuster configured to compensate for the wear of the linings of the brake 5 in order to avoid reduction of the braking force by excessive play (further to wear of the linings).
- the service brake 6 may comprise a spring 12 disposed around the thrust rod 9 , between the rolling bearing stop which is linked to the latter and an inside edge of the body 2 . This spring 12 is configured to return the stop which is linked to the thrust rod 9 against the wedge part 10 .
- the service brake 6 may comprise a first aperture 15 formed in the body 2 and configured to enable the movement of the thrust rod 9 through that first aperture 15 .
- the service brake 6 may comprise a second aperture 16 formed in the body 2 and opening into the service brake pressure chamber 13 .
- the service brake pressure chamber 13 is connected here by a first supply pipe 72 of the conveyance network of pneumatic pipes, more generally called brake pipe, which pipe is connected at the location of that second aperture 16 , to a source of supply of pneumatic pressure agents (not shown).
- the body 2 comprises a cavity 27 situated against the service brake pressure chamber 13 and in which is disposed the parking brake 7 .
- the parking brake 7 comprises a blocking device formed by a blocking finger 20 movable relative to the body 2 and extending in the second axial direction.
- the parking brake 7 comprises a holding piston 23 movable relative to the body 2 and with the latter delimiting a parking brake pressure chamber 25 .
- This holding piston 23 has two sides, respectively a first side 31 on which is attached the blocking finger 20 and which is turned towards the parking brake pressure chamber 25 , and a second side 32 which is an opposite side to the first side.
- the parking brake 7 comprises a spring member 24 disposed between the body 2 and the second side 32 of the holding piston 23 . This spring member 24 is configured to act on that holding piston 23 and therefore on the blocking finger 20 .
- the holding piston 23 and the spring member 24 may form a movable actuating device of the parking brake 7 .
- the holding piston 23 is configured to move in the body 2 while maintaining the parking brake pressure chamber 25 relatively fluid-tight thanks to a membrane disposed between that holding piston 23 and the inside edges of the body 2 .
- the parking brake 7 comprises a third aperture (not shown) formed in the body 2 and opening both into the parking brake pressure chamber 25 and into the service brake pressure chamber 13 , which third aperture is configured to enable the movement of the blocking finger 20 through that third aperture.
- the relative sealing between the parking brake pressure chamber 25 and the service brake pressure chamber 13 is ensured by the presence of a seal 33 disposed at the interface between that third aperture and the blocking finger 20 .
- the parking brake 7 comprises a fourth aperture 28 formed in the body 2 and opening into the parking brake pressure chamber 25 .
- the parking brake pressure chamber 25 may be connected here by a second supply pipe 71 of the conveyance network of pneumatic pipes, also called parking brake pipe, which is connected at the location of that fourth aperture 28 , to the source of supply of pneumatic pressure agents 73 (visible in FIG. 2 ) via the unit 3 .
- the parking brake 7 comprises an unlocking part 29 to deactivate the parking brake 7 .
- the unlocking part 29 may, for example, be attached on the second side 32 of the holding piston 23 and open to the outside of the body 2 through a fifth aperture (not shown) provided in that body 2 and opening into the cavity 27 .
- the unlocking part 29 is accessible to be manipulated from outside the body 2 if required.
- the unlocking part 29 may be connected to an indicator device provided to indicate a state of the parking brake 7 and/or a state of the service brake 6 .
- the unlocking part 29 may be coupled to a switch mechanically connected to that part 29 and having a first position and a second position selected according to the position of the unlocking part 29 .
- the service brake 6 is disposed in the body 2 and is configured to act on one or more braking members 35 of the rail vehicle via the braking linkage 4 .
- the braking member 35 of the vehicle may comprise a brake disk (here viewed from above) mounted for example on a rail vehicle axle 36 , or directly on the wheel to brake.
- the braking linkage 4 is provided with a device 5 having linings which is provided to apply forces on the brake disk 35 when the linkage 4 is actuated.
- This device 5 here comprises two lining mountings 37 to each of which linings 38 are mechanically connected.
- two linings 38 may be mounted on each lining mounting 37 .
- Each lining 38 is provided to be applied to contact the disk 35 to reduce its rotational speed and therefore that of the wheel to brake.
- the braking linkage 4 here comprises levers 40 , for example that are substantially deformable.
- each lever 40 is provided with an upper portion and with a lower portion which are joined and which extend from the service and parking brake to the device 5 .
- Each portion of the levers 40 may be jointed to a central connector 41 via two pivots 42 .
- the upper portion of each lever 40 may be linked by a first end to a respective joint 44 , 45 .
- the braking linkage 4 may receive the body 2 between the upper portions of the deformable levers 40 , at the location of the joints 44 and 45 .
- the body 2 may be rotatably mounted on the joint 44 which is attached to an end of the thrust rod 9 whereas it may have a fixed mounting to the joint 45 , which is directly attached to that body 2 .
- the lower portion of each lever 40 may be linked, at a second end which is an opposite end to its first end, to one of the lining mountings 37 at the location of an attachment region 39 provided on the latter and which faces away from the linings 37 .
- the braking linkage 4 may comprise a first fastening member 43 joined to the central connector 41 for the mounting of that braking linkage 4 on the rail vehicle for the lining mountings 37 to be situated on respective opposite sides of the brake disk 35 (or of the wheel of the rail vehicle).
- the coming towards each other of the joints 44 and 45 may enable the lining mountings 37 to be moved apart from each other and that conversely, the separation of those joints 44 and 45 may enable the lining mountings 37 to be to clamped onto the brake disk 35 (or onto the rail vehicle wheel).
- the control and actuation unit 3 is connected to the service brake pressure chamber 13 via the first supply pipe 72 to which it is connected.
- This unit 3 is connected to the parking brake pressure chamber 25 via the second supply pipe 71 to which it is connected.
- This unit 3 is supplied with pneumatic agents by a main pipe 70 which passes generally along the rail vehicle.
- the unit 3 comprises system members (not shown in FIG. 1 ) which are configured to receive and process representational information relative for example to operational settings of the rail vehicle, by a first electrical and/or pneumatic and/or manual type channel, denoted 50 in FIG. 1 .
- system members are furthermore configured to receive and process representational information relating to parameters of use of the rail vehicle, by a second channel of electrical and/or pneumatic and/or manual type, which is denoted 60 in FIG. 1 .
- system members may, for example, be formed by pneumatic relays, solenoids, pressure switches, sensors, pressure reducing valves, electrical relays, electronic cards, central processing units or microprocessors, random access memory components comprising registers adapted to record variables of the parameters created and modified during the execution of programs, communication interfaces configured to send and receive data, and/or internal storage members (such as hard disks) able in particular to store the executable code of programs enabling the management of the service and parking brakes 6 and 7 .
- the control and actuation unit 3 may be associated with one or more braking linkages of the rail vehicle.
- FIG. 2 very diagrammatically shows the rail vehicle 48 provided with an axle forming a mounting 49 to which the system 1 is mechanically connected via (for example) a second fastening member 47 which links the body 2 to the mounting 49 .
- the system 1 may comprise at least one force transmission link member 50 also mechanically connected at a first end to the mounting 49 of the vehicle 48 and at a second end, which is an opposite end to the first end, to the to the lining mounting 37 , in immediate proximity to the attachment region 39 of the lever 40 .
- the lining mounting 37 here faces opposite a face of the disk 35 mounted on its axle shaft 36 of the vehicle 48 .
- FIGS. 3 to 6 illustrate a first version of a first embodiment.
- the device 5 faces opposite the brake disk 35 .
- the device 5 comprising a lining mounting 37 and lining 38 , has a longitudinal general orientation and a transverse general orientation.
- a longitudinal central axis 52 and a transverse central axis 51 are illustrated.
- the axes 51 , 52 correspond to the median axes of the brake disk 35 and, in the position illustrated in FIG. 3 , respectively the transverse central axis 51 furthermore corresponds to a transverse central axis of the device 3 .
- the lever 40 is mechanically connected to the lining mounting 37 via the attachment regions 39 .
- the attachment regions 39 are located at most at approximately 35 mm from the transverse central axis 51 of the device 5 . This means that the distances E shown in FIG. 3 are each at most equal to 35 mm.
- the attachment regions 39 are located on opposite sides of the transverse central axis 51 and thus, at most, extend over approximately 70 mm in the direction of the longitudinal general orientation. More generally, the attachment region or regions 39 may be located between approximately 0 and approximately 35 mm from the transverse central axis 51 and may extend in a longitudinal general orientation and over a length comprised between approximately 15 mm and approximately 70 mm.
- the attachment regions 39 extend interruptedly on opposite sides of the transverse central axis 51 .
- the attachment regions 39 are distinct.
- the attachment region may extend uninterruptedly on opposite sides of the transverse central axis 51 .
- a longitudinal force application axis 53 is illustrated in fine chain line, while a longitudinal holding axis 54 is illustrated in thick chain line.
- the longitudinal force application axis 53 is the one passing through the attachment regions 39 of the lining mounting 37 , which regions enable the mechanical connection of the levers 40
- the longitudinal holding axis 54 is slightly offset relative to the longitudinal force application axis 53 and corresponds to the region for fastening the linings 53 onto the lining mounting 38 .
- the device 5 comprises at least two bearing regions 60 on the brake disk 35 and at least one set back region 61 located between the two bearing regions 60 . More generally, the device may comprise a plurality of bearing regions between which are formed set back regions. The bearing and set back regions 60 , 61 succeed each other in the direction of the longitudinal general orientation of the device 5 .
- the two bearing regions 60 and the set back region 61 are provided here on a face of the lining mounting 37 , which is an opposite face to that on which are formed the attachment regions 39 .
- Each of the two bearing regions 60 is provided here to be located facing opposite a respective lining 38 . This is shown in FIGS. 6 and 7 in which can be seen the bearing regions 60 provided on the lining mounting 37 and in which can also be seen favored contact regions 65 provided on the linings 38 , which respectively correspond to the bearing regions 60 .
- the bearing regions may be formed by protrusions on the lining mountings and/or that the set back region may be formed by recesses in the lining mountings. The bearing regions and the set back regions are thus located in planes that are offset.
- the bearing regions 60 and the set back region 61 extend fully along the transverse general orientation of the device 5 . Furthermore, the bearing regions 60 and the set back region 61 are formed here substantially symmetrically relative to the transverse central axis 51 .
- the device 5 of the braking linkage 4 which comes into contact with the brake disk 35 is thus provided with a bearing surface referred to as discontinuous, with only the bearing regions 60 enabling forces to be transmitted to the brake disk 35 . This enables the transmission of the forces to the brake disk 35 to be distributed.
- FIGS. 7 to 9 illustrate a second version.
- the difference compared with the preceding version is that the bearing regions 60 are closer to each other and to the transverse central axis 51 , and the set back region 61 is more limited. This results in the favored contact regions 65 provided on the linings 38 and which respectively correspond to the bearing regions 60 are also closer to each other and to the transverse central axis 51 .
- the attachment regions 39 are identical to those described above.
- FIGS. 10 to 13 illustrate a first version of a second embodiment.
- the device 5 differs from those described above in that the lever 40 is mechanically connected to the lining mounting 37 via a single attachment region 39 .
- the attachment region 39 is at the location of the transverse central axis 51 of the device 5 and extends slightly on opposite sides of that axis 51 .
- the attachment region extends only approximately 10 mm to approximately 20 mm on opposite sides of the transverse central axis 51 .
- the distance E shown in FIG. 10 is at most equal to approximately 40 mm, in the direction of the longitudinal general orientation.
- such a single attachment region may extend in a longitudinal general orientation and over a length comprised between approximately 15 mm and approximately 70 mm.
- the single attachment region 39 here extends uninterruptedly on opposite sides of the transverse central axis 51 .
- the loads applied by the lever 40 of the braking linkage 4 on the device 5 of that linkage 4 to place it in contact with the brake disk 35 are thus substantially centered on the lining mounting 37 . Since the attachment region 39 of the lever 40 on the lining mounting 37 is at the location of the central transverse axis 51 , this enables the lining mountings 37 to have a degree of freedom when it transmits forces to the brake disk 35 .
- the device 5 comprises at least two bearing regions 60 on the brake disk 35 and at least one set back region 61 located between the two bearing regions 60 .
- the bearing and set back regions 60 , 61 succeed in the direction of the longitudinal general orientation of the device 5 and are identical to that of the device illustrated in FIGS. 3 to 6 .
- the two bearing regions 60 and the set back region 61 are provided here on a face of the lining mounting 37 , which is an opposite face to that on which are formed the attachment regions 39 , and each of the two bearing regions 60 is provided here so as to be located facing opposite a respective lining 38 .
- the bearing regions 60 and the set back region 61 extend fully along the transverse general orientation of the device 5 , and are provided here substantially symmetrically relative to the transverse central axis 51 .
- the device 5 and the braking linkage 4 which comes into contact with the brake disk 35 is thus provided with a bearing surface referred to as discontinuous, with only the bearing regions 60 enabling forces to be transmitted to the brake disk 35 . This enables the transmission of the forces to the brake disk 35 to be distributed.
- FIGS. 14 and 15 illustrate a second version of the second embodiment.
- the difference with the preceding version is that the device 5 has no set back region and thus only has a single bearing region 60 which extends over the whole face of the lining mounting 37 .
- FIG. 16 is a similar view to that of FIG. 10 , with addition of the force transmission link member 50 visible very diagrammatically in FIG. 2 .
- the force transmission link member 50 is mechanically connected at its first end to the mounting 49 of the vehicle and at a second end, which is an opposite end to its first end, to the lining mounting 37 , and in immediate proximity to the single attachment region 39 of the lever 40 on that same lining mounting 37 .
- the force transmission link member 50 may be mechanically connected by pivotal connections 70 , 75 respectively to the mounting 49 of the vehicle and to the lining mounting 37 . Since the attachment regions 39 of the lever 40 on the lining mounting 37 are close to and/or are centered on the transverse central axis 51 of the device 5 , the pivotal connection 75 which connects the force transmission link member 50 to the lining mounting 37 is also at a location close to that same transverse central axis 51 , thereby limiting the distance D shown in FIGS. 17 to 19 . This in particular makes it possible to have an especially compact system 1 .
- FIG. 17 shows the force transmission link member 50 mechanically connected to a lining mounting 37 of a device 5 similar to that described with reference to FIG. 14 , without any set back region on the lining mounting 37 , and with a single attachment region 39 of the lever 40 on the lining mounting 37 .
- FIG. 18 shows the same force transmission link member 50 mechanically connected to a lining mounting 37 of a device 5 similar to that described with reference to FIG. 11 , with bearing regions 60 and a set back region 61 provided on the lining mounting 37 , and with a single attachment region 39 of the lever 40 on the lining mounting 37 .
- FIG. 19 shows the same force transmission link member 50 mechanically connected to a lining mounting 37 of a device 5 quite close to those described with reference to FIGS. 4 and 7 , but with no set back region on the lining mounting 37 (in the manner of those described with reference to FIGS. 14 and 17 ), while it comprises distinct attachment regions 39 for the lever 40 on the lining mounting 37 .
- the force transmission link member 50 may have an added functional clearance at least at the location of its second end where it is connected to the lining mounting 37 by its pivotal connection 75 .
- the force transmission link member 50 may be connected via a rotary joint to the lining mounting 70 or instead via a pivotal shaft pivoting in an aperture of considerably greater diameter than that of the pivotal shaft, or in an oblong aperture.
- the lining 38 is mechanically connected to the lining mounting 37 through a fastening region (not shown) of substantially dovetail shape.
- a fastening region is quite different from the bearing and set back regions described above since it does not enable the transmission of the forces on the braking member to be distributed.
- FIG. 22 illustrates an example embodiment of the force transmission link member 50 .
- the force transmission link member 50 is substantially L-shaped, or S-shaped, with the pivotal connections 70 , 75 being respectively to the mounting 49 of the vehicle and to the lining mounting 37 .
- the force transmission link member 50 extends substantially in a same plane as that in which the lever 40 extends.
- the force transmission link member may have a bearing region formed with steps.
- the bearing region may comprise different bearing portions offset to a greater or lesser extent relative to the adjacent set back region.
- the bearing portion may form what is designated an augmented-bearing region.
- the lining-mounting may comprise one or more set back regions extending for approximately 100 mm to approximately 300 mm from the transverse central axis of the device.
- the set back region or regions may be formed by cavities having a depth comprised for example between approximately 0.1 mm and approximately 0.5 mm.
- the lining-mounting can comprise a single set back region extending for approximately 180 mm (or for 90 mm on opposite sides of the transverse axis), and having a cavity of approximately 0.2 mm; the rest of the lining-mounting overall forming one or more bearing regions.
- the lining-mounting can comprise a first set back region extending for approximately 120 mm (or for 60 mm on opposite sides of the transverse axis), and having a cavity of approximately 0.3 mm, next the second set back regions either do or do not immediately succeed the first set back region, each extending for approximately 60 mm and having a cavity of approximately 0.15 mm; the rest of the lining-mounting overall forming one or more bearing regions.
- the lining-mounting can comprise a first set back region extending for approximately 120 mm (or for 60 mm on opposite sides of the transverse axis), and having a cavity of approximately 0.35 mm, next the second set back regions either do or do not immediately succeed the first set back region, each extending for approximately 60 mm and having a cavity of approximately 0.2 mm; the rest of the lining-mounting overall forming one or more bearing regions.
- Such arrangements of the set back regions make it possible to distribute the transmission of the forces over the braking member.
- the bearing regions and/or the set back region may be provided in the linings rather than in the lining mountings. Some bearing and/or set back regions may extend fully along the transverse general orientation, while other of these regions may extend only partly. The bearing and set back regions are not provided substantially symmetrically relative to the transverse central axis. A single lining, rather than two linings, is mounted on each of the lining mountings, or, on the contrary, more than two linings are mounted on each of the lining mountings.
- the force transmission link member may be mechanically connected to the vehicle mounting, directly or by an intermediate connecting part.
- the vehicle braking system may be different from that described above in that it may concern only a service brake, or concern only a parking brake, and in that the mechanism may have springs as has for example been described in document EP 2 154 040.
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- Engineering & Computer Science (AREA)
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- Braking Arrangements (AREA)
Abstract
A braking system for a vehicle includes brake rigging and a service and/or parking brake designed to act on at least one braking member of the rail vehicle via the brake rigging. At least one device has at least one lining support and at least one lining that is mechanically attached to the at least one lining support. The brake rigging is provided with at least one lever extending from the service and/or parking brake to the device. The at least one lever is mechanically attached to the at least one lining support in an attachment zone of the lining support which lies opposite the at least one lining and which is located no more than 35 mm from a transverse central axis of the device.
Description
- This application is a national stage entry of International Patent Application No. PCT/EP2020/070889 (filed 23 Jul. 2020), which claims priority to French Patent Application No. 1908510 (filed 26 Jul. 2019), French Patent Application No. 1908512 (filed 26 Jul. 2019), and French Patent Application No. 1911666 (filed 18 Oct. 2019), the entire disclosures of which are incorporated herein by reference.
- The inventive subject matter concerns the field of vehicle brakes. More particularly, the inventive subject matter concerns a braking system for a rail vehicle having brakes with at least one lining, provided with a braking linkage and with a service brake and/or parking brake configured to act on the braking members of the vehicle, for example such as brake disks, via the braking linkage.
- Rail vehicles having brakes with at least one lining are generally equipped with braking systems having service brake and/or parking brake cylinders. The braking systems include a piston movable under the effect of a fluid under pressure. Movement of the piston actuates a braking linkage and drives a braking action, such as the clamping of a brake disk by the lining of that linkage.
- The braking system is mounted on the rail vehicle to be in contact with the brake disks or the wheels. In particular, the braking system may be mechanically connected to a bogie, to an axle fastened to the bogie, or to another device like the drive motor or the gearbox also mounted on the bogie.
- The braking action gives rise to braking forces which may be transmitted, via the braking linkage, to the mounting to which the braking system is mechanically connected. These forces may generate deformations, or at least movements, of the braking linkage relative to the brake disk of the vehicle, thereby giving rise to irregular wear of the lining.
- The inventive subject matter concerns a braking system for a vehicle having brakes with at least one lining. The braking system includes an improved braking linkage, while being simple, convenient, and economical.
- According to a first aspect, the inventive subject matter thus relates to a rail vehicle braking system comprising a braking linkage and a service brake and/or parking brake configured to act on at least one braking member of the rail vehicle via the braking linkage. The linkage is provided with at least one device having at least one lining mounting and at least one lining mechanically connected to the at least one lining mounting, and with at least one lever extending from the service brake and/or parking brake to the device. The at least one lever is mechanically connected to the at least one lining mounting, on an attachment region thereof which is located away from the at least one lining and which is at most 35 millimeters (mm) from a transverse central axis of the device.
- In other words, the loads applied by the lever of the braking linkage on the device for that linkage to place the linkage in contact with the braking member of the vehicle, for example in particular a brake disk, are substantially centered on the lining mounting.
- Since the attachment region of the lever on the lining mounting is close to the transverse central axis of the device, this enables the lining mounting to have a degree of freedom when the lining mounting transmits forces to the brake disk of the vehicle.
- In particular, the lining mounting can self-tilt to adapt to the type of braking system and/or to the conditions of use of the rail vehicle. For example, the arrangement of the braking linkage of which the form, the arrangement, and/or the materials of the lining mounting and/or of the linings; the fact of whether the braking linkage is a parking brake or else a service brake; the type of vehicle (tram, subway train, high-speed train, etc.); the load of the vehicle, the journey made by the vehicle; and/or the type of braking member (diameter, thickness, material of the disk) may be parameters that enable the lining mounting to optimally locate.
- Features according to the inventive subject matter that are preferred, simple, convenient and economical are presented below.
- The attachment region may be located between approximately 0 and 35 mm from the transverse central axis of the device. The attachment region may extend in a longitudinal general orientation of the device and over a length comprised between approximately 15 mm and approximately 70 mm. The attachment region may extend uninterruptedly on opposite sides of the transverse central axis of the device. The at least one attachment region may extend interruptedly on opposite sides of the transverse central axis of the device.
- The system may comprise at least one force transmission link member mechanically connected at a first end to a mounting of the vehicle and at a second end, which is an opposite end to the first end, to the at least one lining mounting, in immediate proximity to the attachment region of the at least one lever. The at least one force transmission link member may be substantially L-shaped, or S-shaped. The at least one force transmission link member may extend substantially in a same plane as that in which extends the at least one lever. The at least one force transmission link member may be mechanically connected by pivotal connections respectively to the vehicle mounting and to the at least one lining mounting. The at least one force transmission link member may have an added functional clearance at its second end where it is connected to the at least one lining mounting. The at least one force transmission link member may be connected via a rotary joint to the at least one lining mounting. The at least one force transmission link member may be connected to the at least one lining mounting via a pivotal shaft pivoting in an aperture of considerably greater diameter than that of the pivotal shaft, or in an oblong aperture.
- The device may comprise at least two bearing regions for bearing on the at least one braking member and at least one set back region located between the two the bearing regions. Such bearing and set back regions are configured to distribute the transmission of the forces over the braking member. These regions are quite different from any regions for fastening the linings onto the lining mounting, these latter not being configured to distribute the transmission of the forces over the braking member. The at least one lining mounting and/or the at least one lining may have a longitudinal general orientation and a transverse general orientation, with the bearing and set back regions succeeding each other in the longitudinal general orientation.
- The system may comprise at least two linings mechanically connected to the lining mounting, at least one the bearing region being located facing opposite the respective lining. The at least two bearing regions and the at least one set back region may be provided on the at least one lining mounting. The at least two bearing regions and the at least one set back region may be provided on the at least one lining. The device may comprise plural bearing regions between which are formed the set back regions.
- The at least one lining mounting and/or the at least one lining may have a longitudinal general orientation and a transverse general orientation, with the bearing and set back regions succeeding each other in the longitudinal general orientation. At least one the bearing and/or set back region may extend fully or only partly along the transverse general orientation. The bearing and set back regions are provided substantially symmetrically relative to a transverse central axis of the device. This axis may for example constitute a median axis of the braking member of the rail vehicle.
- According to a second aspect, the inventive subject matter also relates to a rail vehicle comprising at least one braking member, for example in particular a brake disk, and at least one rail vehicle braking system as described above, which is configured to act on the at least one braking member.
- The disclosure of the inventive subject matter will now be continued with the description of embodiments, given below by way of illustrative and non-limiting examples, with reference to the accompanying drawings.
-
FIG. 1 is a diagrammatic and partial illustration of a rail vehicle braking system provided in particular with a service brake, a parking brake and with a control and actuation unit. -
FIG. 2 is a partial and diagrammatic representation of the system illustrated inFIG. 1 , mechanically connected to an axle for a bogie of a rail vehicle comprising such a rail vehicle braking system. -
FIG. 3 is a diagrammatic representation of a lining mounting according to a first embodiment of the rail vehicle braking system ofFIG. 1 , which lining mounting is mounted facing opposite a first face of a brake disk also illustrated inFIG. 1 . -
FIG. 4 is a cross section view on IV-IV ofFIG. 3 ; -
FIG. 5 is a diagrammatic representation of a contact face of the lining mounting illustrated inFIG. 3 . -
FIG. 6 diagrammatically illustrates linings facing opposite the first face of the brake disk, which linings are provided to be carried by the lining mounting. -
FIG. 7 is a similar view to that ofFIG. 4 , showing a first variant embodiment of the lining mounting. -
FIG. 8 is a similar view to that ofFIG. 5 , showing the first variant embodiment of the lining mounting. -
FIG. 9 is a similar view to that ofFIG. 6 , the linings being mounted on the first variant embodiment of the lining mounting. -
FIG. 10 is a similar view to that ofFIG. 3 , showing a lining mounting according to a second embodiment of the rail vehicle braking system ofFIG. 1 . -
FIG. 11 is a cross section view on XI-XI ofFIG. 10 ; -
FIG. 12 is a diagrammatic representation of a contact face of the lining mounting illustrated inFIG. 10 . -
FIG. 13 is a similar view to that ofFIG. 6 . -
FIG. 14 is a similar view to that ofFIG. 11 , showing a first variant embodiment of the lining mounting according to the second embodiment of the system. -
FIG. 15 is a similar view to that ofFIG. 12 , showing the first variant embodiment of the lining mounting according to the second embodiment of the system. -
FIG. 16 is a similar view to that ofFIG. 10 , showing a force transmission link member mechanically connected to the lining mounting. -
FIG. 17 is a similar view to that ofFIG. 14 , with addition of the force transmission link member. -
FIG. 18 is a similar view to that ofFIG. 11 , with addition of the force transmission link member. -
FIG. 19 is a similar view to that ofFIG. 4 , showing a lining mounting according to a third embodiment of the rail vehicle braking system, with the force transmission link member. -
FIG. 20 shows a mechanical interconnection between a lining mounting and a force transmission link member, in a first position of the latter. -
FIG. 21 is a similar view to that ofFIG. 20 , the force transmission link member being in a second position. -
FIG. 22 illustrates a variant embodiment of the force transmission link member. -
FIG. 1 diagrammatically represents avehicle braking system 1 for a vehicle having a brake with linings. This is a vehicle braking system structurally of the type described in Europeanpatent application EP 2 826 684. Thevehicle braking system 1 comprises abody 2 forming a cylinder of both aservice brake 6 and aparking brake 7, a control andactuation unit 3 configured to manage the operation of theservice brake 6 and of theparking brake 7, a conveyance network of pneumatic pipes that is connected to thebody 2 and to the control andactuation unit 3, and abraking linkage 4 mechanically linked to thebody 2. - The
body 2 has the form of a generally closed envelope. Theservice brake 6 comprises aservice brake piston 8 movable relative to thebody 2 in a first axial direction, and athrust rod 9 also movable relative to thebody 2 in a second axial direction perpendicular to the first axial direction. Together with thebody 2, thebraking piston 8 delimits a servicebrake pressure chamber 13. - The
braking piston 8 has two sides respectively afirst side 17 configured to act on thebraking linkage 4 via thethrust rod 9 and asecond side 18 which is an opposite side to thefirst side 17 and which is turned towards the servicebrake pressure chamber 13. Theservice brake 6 further comprises a notchedrod 21 fastened to thesecond side 18 of thebraking piston 8. This notchedrod 21 extends longitudinally in the first axial direction. Thebraking piston 8 is configured to move in thebody 2 while maintaining the servicebrake pressure chamber 13 relatively fluid-tight thanks to amembrane 14, for example formed by a seal, disposed between thatbraking piston 8 and inside edges of thebody 2. - The
service brake 6 may further comprise awedge part 10 fastened to thefirst side 17 of thebraking piston 8. Thiswedge part 10 may have a triangular section and be configured to cooperate with a set of rolling bearing stops 11, of which one of the rolling bearing stops may be linked to thebody 2 while the other of the rolling bearing stops may be linked to thethrust rod 9. Thisthrust rod 9 may be provided with a wear adjuster configured to compensate for the wear of the linings of thebrake 5 in order to avoid reduction of the braking force by excessive play (further to wear of the linings). - The
service brake 6 may comprise aspring 12 disposed around thethrust rod 9, between the rolling bearing stop which is linked to the latter and an inside edge of thebody 2. Thisspring 12 is configured to return the stop which is linked to thethrust rod 9 against thewedge part 10. Theservice brake 6 may comprise afirst aperture 15 formed in thebody 2 and configured to enable the movement of thethrust rod 9 through thatfirst aperture 15. Theservice brake 6 may comprise asecond aperture 16 formed in thebody 2 and opening into the servicebrake pressure chamber 13. The servicebrake pressure chamber 13 is connected here by afirst supply pipe 72 of the conveyance network of pneumatic pipes, more generally called brake pipe, which pipe is connected at the location of thatsecond aperture 16, to a source of supply of pneumatic pressure agents (not shown). Thebody 2 comprises acavity 27 situated against the servicebrake pressure chamber 13 and in which is disposed theparking brake 7. - The
parking brake 7 comprises a blocking device formed by a blockingfinger 20 movable relative to thebody 2 and extending in the second axial direction. Theparking brake 7 comprises a holding piston 23 movable relative to thebody 2 and with the latter delimiting a parkingbrake pressure chamber 25. This holding piston 23 has two sides, respectively afirst side 31 on which is attached the blockingfinger 20 and which is turned towards the parkingbrake pressure chamber 25, and asecond side 32 which is an opposite side to the first side. Theparking brake 7 comprises aspring member 24 disposed between thebody 2 and thesecond side 32 of the holding piston 23. Thisspring member 24 is configured to act on that holding piston 23 and therefore on the blockingfinger 20. - The holding piston 23 and the
spring member 24 may form a movable actuating device of theparking brake 7. The holding piston 23 is configured to move in thebody 2 while maintaining the parkingbrake pressure chamber 25 relatively fluid-tight thanks to a membrane disposed between that holding piston 23 and the inside edges of thebody 2. - The
parking brake 7 comprises a third aperture (not shown) formed in thebody 2 and opening both into the parkingbrake pressure chamber 25 and into the servicebrake pressure chamber 13, which third aperture is configured to enable the movement of the blockingfinger 20 through that third aperture. The relative sealing between the parkingbrake pressure chamber 25 and the servicebrake pressure chamber 13 is ensured by the presence of aseal 33 disposed at the interface between that third aperture and the blockingfinger 20. Theparking brake 7 comprises afourth aperture 28 formed in thebody 2 and opening into the parkingbrake pressure chamber 25. The parkingbrake pressure chamber 25 may be connected here by asecond supply pipe 71 of the conveyance network of pneumatic pipes, also called parking brake pipe, which is connected at the location of thatfourth aperture 28, to the source of supply of pneumatic pressure agents 73 (visible inFIG. 2 ) via theunit 3. - The
parking brake 7 comprises an unlockingpart 29 to deactivate theparking brake 7. The unlockingpart 29 may, for example, be attached on thesecond side 32 of the holding piston 23 and open to the outside of thebody 2 through a fifth aperture (not shown) provided in thatbody 2 and opening into thecavity 27. The unlockingpart 29 is accessible to be manipulated from outside thebody 2 if required. The unlockingpart 29 may be connected to an indicator device provided to indicate a state of theparking brake 7 and/or a state of theservice brake 6. In particular, the unlockingpart 29 may be coupled to a switch mechanically connected to thatpart 29 and having a first position and a second position selected according to the position of the unlockingpart 29. - The
service brake 6 is disposed in thebody 2 and is configured to act on one ormore braking members 35 of the rail vehicle via thebraking linkage 4. The brakingmember 35 of the vehicle may comprise a brake disk (here viewed from above) mounted for example on arail vehicle axle 36, or directly on the wheel to brake. Thebraking linkage 4 is provided with adevice 5 having linings which is provided to apply forces on thebrake disk 35 when thelinkage 4 is actuated. Thisdevice 5 here comprises twolining mountings 37 to each of which linings 38 are mechanically connected. In particular, twolinings 38 may be mounted on each lining mounting 37. Each lining 38 is provided to be applied to contact thedisk 35 to reduce its rotational speed and therefore that of the wheel to brake. - The
braking linkage 4 here compriseslevers 40, for example that are substantially deformable. In the described example, eachlever 40 is provided with an upper portion and with a lower portion which are joined and which extend from the service and parking brake to thedevice 5. Each portion of thelevers 40 may be jointed to acentral connector 41 via two pivots 42. The upper portion of eachlever 40 may be linked by a first end to a respective joint 44, 45. Thebraking linkage 4 may receive thebody 2 between the upper portions of thedeformable levers 40, at the location of thejoints - The
body 2 may be rotatably mounted on the joint 44 which is attached to an end of thethrust rod 9 whereas it may have a fixed mounting to the joint 45, which is directly attached to thatbody 2. The lower portion of eachlever 40 may be linked, at a second end which is an opposite end to its first end, to one of thelining mountings 37 at the location of anattachment region 39 provided on the latter and which faces away from thelinings 37. Thebraking linkage 4 may comprise afirst fastening member 43 joined to thecentral connector 41 for the mounting of thatbraking linkage 4 on the rail vehicle for thelining mountings 37 to be situated on respective opposite sides of the brake disk 35 (or of the wheel of the rail vehicle). - The coming towards each other of the
joints lining mountings 37 to be moved apart from each other and that conversely, the separation of thosejoints lining mountings 37 to be to clamped onto the brake disk 35 (or onto the rail vehicle wheel). The control andactuation unit 3 is connected to the servicebrake pressure chamber 13 via thefirst supply pipe 72 to which it is connected. - This
unit 3 is connected to the parkingbrake pressure chamber 25 via thesecond supply pipe 71 to which it is connected. Thisunit 3 is supplied with pneumatic agents by amain pipe 70 which passes generally along the rail vehicle. Theunit 3 comprises system members (not shown inFIG. 1 ) which are configured to receive and process representational information relative for example to operational settings of the rail vehicle, by a first electrical and/or pneumatic and/or manual type channel, denoted 50 inFIG. 1 . - These system members are furthermore configured to receive and process representational information relating to parameters of use of the rail vehicle, by a second channel of electrical and/or pneumatic and/or manual type, which is denoted 60 in
FIG. 1 . These system members may, for example, be formed by pneumatic relays, solenoids, pressure switches, sensors, pressure reducing valves, electrical relays, electronic cards, central processing units or microprocessors, random access memory components comprising registers adapted to record variables of the parameters created and modified during the execution of programs, communication interfaces configured to send and receive data, and/or internal storage members (such as hard disks) able in particular to store the executable code of programs enabling the management of the service andparking brakes actuation unit 3 may be associated with one or more braking linkages of the rail vehicle. -
FIG. 2 very diagrammatically shows therail vehicle 48 provided with an axle forming a mounting 49 to which thesystem 1 is mechanically connected via (for example) asecond fastening member 47 which links thebody 2 to the mounting 49. Thesystem 1 may comprise at least one forcetransmission link member 50 also mechanically connected at a first end to the mounting 49 of thevehicle 48 and at a second end, which is an opposite end to the first end, to the to the lining mounting 37, in immediate proximity to theattachment region 39 of thelever 40. The lining mounting 37 here faces opposite a face of thedisk 35 mounted on itsaxle shaft 36 of thevehicle 48. - A description will now be given in more detail, with reference to
FIGS. 3 to 16 , of thedevice 5 and of the arrangement of thelevers 40 in relation to thedevice 5, in accordance with several embodiments.FIGS. 3 to 6 illustrate a first version of a first embodiment. Thedevice 5 faces opposite thebrake disk 35. Thedevice 5, comprising a lining mounting 37 and lining 38, has a longitudinal general orientation and a transverse general orientation. A longitudinalcentral axis 52 and a transversecentral axis 51 are illustrated. Theaxes brake disk 35 and, in the position illustrated inFIG. 3 , respectively the transversecentral axis 51 furthermore corresponds to a transverse central axis of thedevice 3. - The
lever 40 is mechanically connected to the lining mounting 37 via theattachment regions 39. Theattachment regions 39 are located at most at approximately 35 mm from the transversecentral axis 51 of thedevice 5. This means that the distances E shown inFIG. 3 are each at most equal to 35 mm. Here, theattachment regions 39 are located on opposite sides of the transversecentral axis 51 and thus, at most, extend over approximately 70 mm in the direction of the longitudinal general orientation. More generally, the attachment region orregions 39 may be located between approximately 0 and approximately 35 mm from the transversecentral axis 51 and may extend in a longitudinal general orientation and over a length comprised between approximately 15 mm and approximately 70 mm. - In the described example, the
attachment regions 39 extend interruptedly on opposite sides of the transversecentral axis 51. In other words, theattachment regions 39 are distinct. As a variant, the attachment region may extend uninterruptedly on opposite sides of the transversecentral axis 51. A longitudinalforce application axis 53 is illustrated in fine chain line, while alongitudinal holding axis 54 is illustrated in thick chain line. The longitudinalforce application axis 53 is the one passing through theattachment regions 39 of the lining mounting 37, which regions enable the mechanical connection of thelevers 40, while thelongitudinal holding axis 54 is slightly offset relative to the longitudinalforce application axis 53 and corresponds to the region for fastening thelinings 53 onto the lining mounting 38. - The loads applied by the
lever 40 of thebraking linkage 4 on thedevice 5 of thatlinkage 4 to place it in contact with thebrake disk 35 are thus substantially centered on the lining mounting 37. Since theattachment regions 39 of thelever 40 on the lining mounting 37 are close to the centraltransverse axis 51, this enables thelining mountings 37 to have a degree of freedom when thelining mountings 37 transmit forces to thebrake disk 35. - In the described example, the
device 5 comprises at least two bearingregions 60 on thebrake disk 35 and at least one set backregion 61 located between the two bearingregions 60. More generally, the device may comprise a plurality of bearing regions between which are formed set back regions. The bearing and set backregions device 5. The twobearing regions 60 and the set backregion 61 are provided here on a face of the lining mounting 37, which is an opposite face to that on which are formed theattachment regions 39. - Each of the two bearing
regions 60 is provided here to be located facing opposite arespective lining 38. This is shown inFIGS. 6 and 7 in which can be seen the bearingregions 60 provided on the lining mounting 37 and in which can also be seen favoredcontact regions 65 provided on thelinings 38, which respectively correspond to thebearing regions 60. It will be noted that the bearing regions may be formed by protrusions on the lining mountings and/or that the set back region may be formed by recesses in the lining mountings. The bearing regions and the set back regions are thus located in planes that are offset. - In the described example, the bearing
regions 60 and the set backregion 61 extend fully along the transverse general orientation of thedevice 5. Furthermore, the bearingregions 60 and the set backregion 61 are formed here substantially symmetrically relative to the transversecentral axis 51. - The
device 5 of thebraking linkage 4 which comes into contact with thebrake disk 35 is thus provided with a bearing surface referred to as discontinuous, with only the bearingregions 60 enabling forces to be transmitted to thebrake disk 35. This enables the transmission of the forces to thebrake disk 35 to be distributed. -
FIGS. 7 to 9 illustrate a second version. The difference compared with the preceding version is that the bearingregions 60 are closer to each other and to the transversecentral axis 51, and the set backregion 61 is more limited. This results in the favoredcontact regions 65 provided on thelinings 38 and which respectively correspond to thebearing regions 60 are also closer to each other and to the transversecentral axis 51. Theattachment regions 39 are identical to those described above. -
FIGS. 10 to 13 illustrate a first version of a second embodiment. Thedevice 5 differs from those described above in that thelever 40 is mechanically connected to the lining mounting 37 via asingle attachment region 39. Theattachment region 39 is at the location of the transversecentral axis 51 of thedevice 5 and extends slightly on opposite sides of thataxis 51. For example, the attachment region extends only approximately 10 mm to approximately 20 mm on opposite sides of the transversecentral axis 51. This means that the distance E shown inFIG. 10 is at most equal to approximately 40 mm, in the direction of the longitudinal general orientation. More generally, such a single attachment region may extend in a longitudinal general orientation and over a length comprised between approximately 15 mm and approximately 70 mm. Thesingle attachment region 39 here extends uninterruptedly on opposite sides of the transversecentral axis 51. - The loads applied by the
lever 40 of thebraking linkage 4 on thedevice 5 of thatlinkage 4 to place it in contact with thebrake disk 35 are thus substantially centered on the lining mounting 37. Since theattachment region 39 of thelever 40 on the lining mounting 37 is at the location of the centraltransverse axis 51, this enables thelining mountings 37 to have a degree of freedom when it transmits forces to thebrake disk 35. In the described example, thedevice 5 comprises at least two bearingregions 60 on thebrake disk 35 and at least one set backregion 61 located between the two bearingregions 60. - The bearing and set back
regions device 5 and are identical to that of the device illustrated inFIGS. 3 to 6 . The twobearing regions 60 and the set backregion 61 are provided here on a face of the lining mounting 37, which is an opposite face to that on which are formed theattachment regions 39, and each of the two bearingregions 60 is provided here so as to be located facing opposite arespective lining 38. -
Favored contact regions 65 are thus provided on thelinings 38, which respectively correspond to thebearing regions 60. The bearingregions 60 and the set backregion 61 extend fully along the transverse general orientation of thedevice 5, and are provided here substantially symmetrically relative to the transversecentral axis 51. Thedevice 5 and thebraking linkage 4 which comes into contact with thebrake disk 35 is thus provided with a bearing surface referred to as discontinuous, with only the bearingregions 60 enabling forces to be transmitted to thebrake disk 35. This enables the transmission of the forces to thebrake disk 35 to be distributed. -
FIGS. 14 and 15 illustrate a second version of the second embodiment. The difference with the preceding version is that thedevice 5 has no set back region and thus only has asingle bearing region 60 which extends over the whole face of the lining mounting 37. -
FIG. 16 is a similar view to that ofFIG. 10 , with addition of the forcetransmission link member 50 visible very diagrammatically inFIG. 2 . The forcetransmission link member 50 is mechanically connected at its first end to the mounting 49 of the vehicle and at a second end, which is an opposite end to its first end, to the lining mounting 37, and in immediate proximity to thesingle attachment region 39 of thelever 40 on that same lining mounting 37. - The force
transmission link member 50 may be mechanically connected bypivotal connections attachment regions 39 of thelever 40 on the lining mounting 37 are close to and/or are centered on the transversecentral axis 51 of thedevice 5, thepivotal connection 75 which connects the forcetransmission link member 50 to the lining mounting 37 is also at a location close to that same transversecentral axis 51, thereby limiting the distance D shown inFIGS. 17 to 19 . This in particular makes it possible to have an especiallycompact system 1. -
FIG. 17 shows the forcetransmission link member 50 mechanically connected to a lining mounting 37 of adevice 5 similar to that described with reference toFIG. 14 , without any set back region on the lining mounting 37, and with asingle attachment region 39 of thelever 40 on the lining mounting 37. -
FIG. 18 shows the same forcetransmission link member 50 mechanically connected to a lining mounting 37 of adevice 5 similar to that described with reference toFIG. 11 , with bearingregions 60 and a set backregion 61 provided on the lining mounting 37, and with asingle attachment region 39 of thelever 40 on the lining mounting 37. -
FIG. 19 shows the same forcetransmission link member 50 mechanically connected to a lining mounting 37 of adevice 5 quite close to those described with reference toFIGS. 4 and 7 , but with no set back region on the lining mounting 37 (in the manner of those described with reference toFIGS. 14 and 17 ), while it comprisesdistinct attachment regions 39 for thelever 40 on the lining mounting 37. - As illustrated in
FIGS. 20 and 21 , the forcetransmission link member 50 may have an added functional clearance at least at the location of its second end where it is connected to the lining mounting 37 by itspivotal connection 75. In particular, the forcetransmission link member 50 may be connected via a rotary joint to the lining mounting 70 or instead via a pivotal shaft pivoting in an aperture of considerably greater diameter than that of the pivotal shaft, or in an oblong aperture. This is represented diagrammatically with anaxis 80 of the forcetransmission link member 50 which, at the location of thepivotal connection 75, may be angularly offset, by an angle denoted M, thereby enabling thedevice 5, including the lining mounting 37 and thelinings 38, to self-tilt to maintain an optimum application of the braking force while enabling the forces to be sent to the vehicle mounting. This in addition to makes it possible to limit the wear of thelinings 38 obliquely, despite the deformations which for example thebrake disk 35 may undergo. - In
FIG. 20 , the lining 38 is mechanically connected to the lining mounting 37 through a fastening region (not shown) of substantially dovetail shape. Such a fastening region is quite different from the bearing and set back regions described above since it does not enable the transmission of the forces on the braking member to be distributed. -
FIG. 22 illustrates an example embodiment of the forcetransmission link member 50. The forcetransmission link member 50 is substantially L-shaped, or S-shaped, with thepivotal connections transmission link member 50 extends substantially in a same plane as that in which thelever 40 extends. Such an arrangement is particularly compact and enables a maximum travel of the lining mounting 37 relative to the mounting 49, thanks the L-shaped or S-shaped forcetransmission link member 50 which does not cause hindrance by the movement of the lining mounting 37. In a variant not illustrated, the force transmission link member may have a bearing region formed with steps. In other words, the bearing region may comprise different bearing portions offset to a greater or lesser extent relative to the adjacent set back region. In particular, the bearing portion may form what is designated an augmented-bearing region. - In other variants not illustrated, the lining-mounting may comprise one or more set back regions extending for approximately 100 mm to approximately 300 mm from the transverse central axis of the device. The set back region or regions may be formed by cavities having a depth comprised for example between approximately 0.1 mm and approximately 0.5 mm.
- According to a first example embodiment, the lining-mounting can comprise a single set back region extending for approximately 180 mm (or for 90 mm on opposite sides of the transverse axis), and having a cavity of approximately 0.2 mm; the rest of the lining-mounting overall forming one or more bearing regions.
- According to a second example embodiment, the lining-mounting can comprise a first set back region extending for approximately 120 mm (or for 60 mm on opposite sides of the transverse axis), and having a cavity of approximately 0.3 mm, next the second set back regions either do or do not immediately succeed the first set back region, each extending for approximately 60 mm and having a cavity of approximately 0.15 mm; the rest of the lining-mounting overall forming one or more bearing regions.
- According to a third example embodiment, the lining-mounting can comprise a first set back region extending for approximately 120 mm (or for 60 mm on opposite sides of the transverse axis), and having a cavity of approximately 0.35 mm, next the second set back regions either do or do not immediately succeed the first set back region, each extending for approximately 60 mm and having a cavity of approximately 0.2 mm; the rest of the lining-mounting overall forming one or more bearing regions. Such arrangements of the set back regions make it possible to distribute the transmission of the forces over the braking member.
- Other variants not illustrated are described below.
- The bearing regions and/or the set back region may be provided in the linings rather than in the lining mountings. Some bearing and/or set back regions may extend fully along the transverse general orientation, while other of these regions may extend only partly. The bearing and set back regions are not provided substantially symmetrically relative to the transverse central axis. A single lining, rather than two linings, is mounted on each of the lining mountings, or, on the contrary, more than two linings are mounted on each of the lining mountings.
- The force transmission link member may be mechanically connected to the vehicle mounting, directly or by an intermediate connecting part. The vehicle braking system may be different from that described above in that it may concern only a service brake, or concern only a parking brake, and in that the mechanism may have springs as has for example been described in
document EP 2 154 040. - More generally, the invention is not limited to the examples described and illustrated.
Claims (15)
1. A vehicle braking system comprising:
a braking linkage;
one or more of a service brake or a parking brake configured to act on at least one braking member of a vehicle via the braking linkage, the braking linkage including at least one device having at least one lining mounting and at least one lining mechanically connected to the at least one lining mounting, at least one lever extending from the one or more of the service brake or the parking brake to the at least one device, wherein the at least one lever is mechanically connected to the at least one lining mounting on an attachment region of the at least one lining mounting that is located away from the at least one lining and which is no more than 35 millimeters from a transverse central axis of the at least one device.
2. The vehicle braking system according to claim 1 , wherein the attachment region is located between approximately 0 and 35 mm from the transverse central axis of the at least one device.
3. The vehicle braking system according to claim 1 , wherein the attachment region extends in a longitudinal general orientation of the at least one device and over a length between approximately 15 mm and approximately 70 mm.
4. The vehicle braking system according to claim 1 , wherein the attachment region uninterruptedly extends on opposite sides of the transverse central axis of the at least one device.
5. The vehicle braking system according to claim 1 , wherein the attachment region uninterruptedly extends on opposite sides of the transverse central axis of the at least one device.
6. The vehicle braking system according to claim 1 , further comprising at least one force transmission link member mechanically connected at a first end to a mounting of the vehicle and at an opposite second end to the lining mounting in immediate proximity to the attachment region of the at least one lever.
7. The vehicle braking system according to claim 6 , wherein the at least one force transmission link member is substantially L-shaped or S-shaped.
8. The vehicle braking system according to claim 7 , wherein the at least one force transmission link member extends substantially in a same plane as that in which the at least one lever extends.
9. The vehicle braking system according to claim 8 wherein the at least one force transmission link member is mechanically connected to the vehicle mounting and to the at least one lining mounting by pivotal connections respectively.
10. The vehicle braking system according to claim 8 , wherein the at least one force transmission link member has an added functional clearance at the second end where the at least one force transmission link member is connected to the at least one lining mounting.
11. The vehicle braking system according to claim 10 , wherein the at least one force transmission link member is connected to the at least one lining mounting via a rotary joint.
12. The vehicle braking system according to claim 10 , wherein the at least one force transmission link member is connected to the at least one lining mounting via a pivotal shaft configured to pivot in one or more of a first aperture of greater diameter than the pivotal shaft or an oblong aperture.
13. The vehicle braking system according to claim 1 , wherein the at least one device comprises plural bearing regions for bearing on the at least one braking member and at least one set back region located between the bearing regions.
14. The vehicle braking system according to claim 13 , wherein one or more of the at least one lining mounting or the at least one lining have a longitudinal general orientation and a transverse general orientation, with the bearing regions and the at least one set back region succeeding each other in the longitudinal general orientation.
15. A vehicle comprising at least one braking member and at least one vehicle braking system according to claim 1 , the at least one vehicle braking system configured to act on the at least one braking member.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1908510A FR3099118B1 (en) | 2019-07-26 | 2019-07-26 | Rail braking system comprising a braking linkage and rail vehicle provided with such a system |
FR1908510 | 2019-07-26 | ||
FR1908512 | 2019-07-26 | ||
FR1908512A FR3099119B1 (en) | 2019-07-26 | 2019-07-26 | Rail braking system comprising a braking linkage and rail vehicle provided with such a system |
FR1911666A FR3102129B1 (en) | 2019-10-18 | 2019-10-18 | Rail braking system comprising a braking linkage and rail vehicle provided with such a system |
FR1911666 | 2019-10-18 | ||
PCT/EP2020/070889 WO2021018745A1 (en) | 2019-07-26 | 2020-07-23 | Railway braking system comprising brake rigging, and rail vehicle equipped with such a system |
Publications (1)
Publication Number | Publication Date |
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US20220258777A1 true US20220258777A1 (en) | 2022-08-18 |
Family
ID=71738161
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/628,548 Pending US20220258777A1 (en) | 2019-07-26 | 2020-07-23 | Vehicle braking system comprising brake rigging, and vehicle equipped with such a system |
US17/628,609 Pending US20220268328A1 (en) | 2019-07-26 | 2020-07-23 | Vehicle braking system comprising brake rigging, and vehicle equipped with such a system |
US17/628,182 Pending US20220258776A1 (en) | 2019-07-26 | 2020-07-23 | Braking System Comprising Brake Rigging, And Vehicle Equipped With Such A Braking System |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
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US17/628,609 Pending US20220268328A1 (en) | 2019-07-26 | 2020-07-23 | Vehicle braking system comprising brake rigging, and vehicle equipped with such a system |
US17/628,182 Pending US20220258776A1 (en) | 2019-07-26 | 2020-07-23 | Braking System Comprising Brake Rigging, And Vehicle Equipped With Such A Braking System |
Country Status (6)
Country | Link |
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US (3) | US20220258777A1 (en) |
EP (3) | EP4003810A1 (en) |
CN (3) | CN114174690B (en) |
AU (3) | AU2020322310A1 (en) |
CA (3) | CA3144856A1 (en) |
WO (3) | WO2021018743A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220268328A1 (en) * | 2019-07-26 | 2022-08-25 | Faiveley Transport Amiens | Vehicle braking system comprising brake rigging, and vehicle equipped with such a system |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR816306A (en) * | 1937-01-13 | 1937-08-05 | Administration Des Chemins De | Device for braking vehicles |
DE2233180C3 (en) * | 1972-07-06 | 1979-08-09 | Mak Maschinenbau Gmbh, 2300 Kiel | Disc brake for laterally shifting wheel sets of rail vehicles |
DE2547530A1 (en) * | 1975-10-23 | 1977-04-28 | Knorr Bremse Gmbh | Disc brake for railway rolling stock - has vibration of brake lining prevented by spring clip retainers |
FR2706844A1 (en) * | 1993-06-23 | 1994-12-30 | Gec Alsthom Transport Sa | Braking device for a bogie |
FR2924478B1 (en) * | 2007-11-29 | 2009-12-04 | Afe Metal | BRAKING DEVICE FOR RAILWAY ROLLING EQUIPMENT. |
FR2934981B1 (en) | 2008-08-13 | 2010-09-24 | Faiveley Transp Amiens | PARKING BRAKE OR EMERGENCY ACTUATOR FOR BALL UNLOCKING BRAKE |
AT507509A3 (en) * | 2008-10-22 | 2012-02-15 | Siemens Ag Oesterreich | DISC BRAKE FOR A RAIL VEHICLE WITH AN ELECTRICALLY INSULATED BRAKE PAD HOLDER |
JP5406632B2 (en) * | 2009-08-25 | 2014-02-05 | カヤバ工業株式会社 | Caliper brake device |
FR2981903B1 (en) * | 2011-10-28 | 2013-11-29 | Sncf | BRAKING DEVICE FOR RAILWAY VEHICLE |
DE102012207194A1 (en) * | 2012-04-30 | 2013-10-31 | Siemens Aktiengesellschaft | Brake unit for a vehicle and vehicle with such a brake unit |
DE102013008227A1 (en) * | 2013-05-13 | 2014-11-13 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Method and device for determining a braking torque on a brake system for a rail vehicle |
FR3008668B1 (en) | 2013-07-17 | 2015-09-04 | Faiveley Transp Amiens | RAIL BRAKING SYSTEM AND METHOD OF BRAKING A RAILWAY VEHICLE COMPRISING SUCH A SYSTEM |
EP3396194A4 (en) * | 2015-12-25 | 2019-01-16 | Nippon Steel & Sumitomo Metal Corporation | Brake lining for railway rolling stock, and disc brake provided therewith |
DE102017101028A1 (en) * | 2017-01-19 | 2018-07-19 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Brake caliper unit |
US20220258777A1 (en) * | 2019-07-26 | 2022-08-18 | Faiveley Transport Amiens | Vehicle braking system comprising brake rigging, and vehicle equipped with such a system |
-
2020
- 2020-07-23 US US17/628,548 patent/US20220258777A1/en active Pending
- 2020-07-23 CA CA3144856A patent/CA3144856A1/en active Pending
- 2020-07-23 WO PCT/EP2020/070887 patent/WO2021018743A1/en unknown
- 2020-07-23 WO PCT/EP2020/070889 patent/WO2021018745A1/en unknown
- 2020-07-23 CA CA3144692A patent/CA3144692A1/en active Pending
- 2020-07-23 WO PCT/EP2020/070888 patent/WO2021018744A1/en unknown
- 2020-07-23 EP EP20757224.9A patent/EP4003810A1/en active Pending
- 2020-07-23 EP EP20743698.1A patent/EP4004396A1/en active Pending
- 2020-07-23 CN CN202080053896.3A patent/CN114174690B/en active Active
- 2020-07-23 US US17/628,609 patent/US20220268328A1/en active Pending
- 2020-07-23 CA CA3144689A patent/CA3144689A1/en active Pending
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220268328A1 (en) * | 2019-07-26 | 2022-08-25 | Faiveley Transport Amiens | Vehicle braking system comprising brake rigging, and vehicle equipped with such a system |
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EP4003809B1 (en) | 2024-04-10 |
AU2020322310A1 (en) | 2022-03-10 |
CN114174691A (en) | 2022-03-11 |
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AU2020321465A1 (en) | 2022-03-10 |
CN114174690A (en) | 2022-03-11 |
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US20220258776A1 (en) | 2022-08-18 |
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US20220268328A1 (en) | 2022-08-25 |
CN114207308A (en) | 2022-03-18 |
AU2020321464A1 (en) | 2022-03-03 |
EP4003809A1 (en) | 2022-06-01 |
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