Classifications

• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
  • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
  • B60T13/66—Electrical control in fluid-pressure brake systems
  • B60T13/665—Electrical control in fluid-pressure brake systems the systems being specially adapted for transferring two or more command signals, e.g. railway systems
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
  • B60T17/18—Safety devices; Monitoring
  • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
  • B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
• • 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
  • B61H13/38—Suspension of transmitting mechanisms
• • 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
• • 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
  • F16D65/005—Components of axially engaging brakes not otherwise provided for
  • F16D65/0056—Brake supports
• • 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
• • 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
  • F16D2055/0004—Parts or details of disc brakes
  • F16D2055/0008—Brake supports
• • 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
  • F16D2125/00—Components of actuators
  • F16D2125/18—Mechanical mechanisms
  • F16D2125/58—Mechanical mechanisms transmitting linear movement
  • F16D2125/68—Lever-link mechanisms, e.g. toggles with change of force ratio

Definitions

• TITLE Railway braking system for railway vehicle and railway vehicle fitted with such a system
• the invention relates to the field of braking of railway vehicles. It relates more particularly to a braking system for a railway vehicle with brakes with at least one lining, configured to act on a braking member of said railway vehicle via said at least one lining. It also concerns railway vehicles comprising such systems.
• Railway vehicles known as brakes with at least one lining are generally equipped with braking systems with service and/or parking brake cylinders, comprising for example a piston movable under the effect of a pressurized fluid, the movement of this piston actuating a braking linkage and causing a braking action such as the tightening of a brake disc by the lining of this linkage.
• Such a braking system is mounted on the railway vehicle, to be in contact with the brake discs or with the wheels.
• This braking system can be mechanically secured on a support formed directly or indirectly by a bogie, or by an axle fixed to the bogie, or by another device such as a drive motor or gearbox also mounted on the bogie.
• the braking action generates forces which can be transmitted, via the levers and the connection device, to the support to which the braking system is attached.
• the forces can be transmitted, through the linkage from the lining holders to movable levers, to the service and/or parking brake cylinders of the braking system and/or to a connector mechanically secured to the support to which the braking system is attached.
• Application WO 2019/175164 A1 describes a railway braking system of the force transmission link type. This system is provided with a connector having two vertical rods around which are pivotally mounted the mobile levers which make it possible to actuate the lining holders and therefore the linings carried by the lining holders to tighten a brake disc of a railway vehicle.
• the connector is formed in two distinct parts and connected together by the two vertical rods.
• An upper part of the connector has a fastening head configured to mechanically secure the connector to the support formed directly or indirectly by the bogie, the axle or the like. It is specified that no additional parts are necessary.
• the invention relates to a link-less type railway braking system, having improved performance, while being simple, convenient and economical.
• a railway braking system for a railway vehicle with brakes with at least one lining, configured to act on at least one braking member of the railway vehicle via the at least one lining.
• a trim and comprising a connection device having a lower part, an upper part distinct from the lower part, two main pillars connecting the lower part to the upper part and an attachment portion forming a single anchoring zone by which the railway braking system is configured to be mechanically secured to the railway vehicle, the system further comprising a braking linkage having levers mounted movable in rotation around the two main pillars, and a service and/or parking brake configured to act on the braking member by actuating the levers of the braking linkage; characterized in that the connection device further comprises at least one additional pillar also connecting the lower part to the upper part and which is arranged closer to the attachment portion than the two main pillars.
• the system according to the invention is a system without a link and its only anchoring point on a support of the railway vehicle is at the level of the connection device.
• the so-called friction forces which are generated during braking are transmitted by the two main pillars and by the additional pillar to the connection device and in particular to its upper part then to the vehicle support via of the attachment portion of the connection device.
• the main pillars are not simply axes around which the levers are mobile in rotation but also and above all organs for transmitting forces.
• the main pillars are supported by at least one additional pillar which, due to its arrangement close to the attachment portion, ensures sufficient rigidity to the connection device and optimal transmission of forces particularly towards the portion attachment.
• the main pillars are located generally in the same first vertical plane and the at least one additional pillar is located in a second vertical plane offset from the first vertical plane and closer to the attachment portion.
• connection device extends generally longitudinally between a first end and a second end opposite the first end, the main pillars are mechanically secured respectively on a first side and on a second side opposite the first side, at the level of the second end of the game upper, and the attachment portion extends longitudinally over a central zone of the connection device located between the first side and the second side, from the first end towards the second end.
• a safety member for example of the radial pin type, can be mounted on at least one end of at least one pillar to secure the assembly.
• connection device The upper part of the connection device is provided with a first arm extending from a main upper zone for fixing one of the two main pillars, a second arm extending from another main upper zone for fixing the the other of the main pillars, with the first arm and the second arm which each join the attachment portion.
• the first arm can extend from the second end on the first side towards the central zone
• the second arm can extend from the second end on the second side towards the central zone where the attachment portion is located and an additional upper zone for fixing the additional pillar at the level of the second end.
• connection device is massive, with the first arm and the second arm which meet at the level of the attachment portion, in the immediate vicinity of the additional upper fixing zone of the additional pillar, without gaps between these different elements.
• the lower part of the connection device generally has a C shape and is provided with a main lower fixing zone provided at each free end of the C and an additional lower fixing zone provided in the center of the C.
• the main pillars and the at least one additional pillar are mechanically secured by screwing and/or by interlocking, optionally by shrinking, and/or by welding and/or by gluing to the upper part and/or the lower part of the securing device. connection.
• the railway braking system comprises at least one substantially elastic repositioning member and having a first end secured to the upper part and a second end secured to a lining holder on which at least one said lining is mounted.
• the attachment portion of the connection device has at least one cylindrical wall and the railway braking system comprises an anchoring member formed of at least one base mounted facing the cylindrical wall, a mounting rod inserted into the less partially in the base and in the cylindrical wall, and at least one cylindrical ring mounted between the mounting rod and the base and/or between the mounting rod and the cylindrical wall, with the at least one base which is pivotally mounted relative to the attachment portion.
• the anchoring member is provided with at least one cylindrical ring made for example of metal and mounted between the mounting rod and the base, and with at least one cylindrical ring made for example of plastic or metal and mounted between the mounting rod and the cylindrical wall.
• the at least one base is positioned opposite at least one additional upper zone for fixing the additional pillar which is provided in the upper part of the connection device.
• the anchoring member is provided with at least one return member which is mounted in cooperation with both the at least one base and the upper part of the connection device and which has a stable position in which it stresses the at least one base for returning the connection device to a predetermined position, for example substantially horizontal.
• the at least one return member is formed of an elastic rod having a first free end mounted in an orifice provided in the at least one base, and a second free end opposite the first free end and housed in a projection formed on the upper part of the connection device.
• the invention also relates to a railway vehicle with brakes with at least one lining, comprising at least one railway braking system as described above, configured to act on at least one braking member of said railway vehicle via of said at least one garnish.
• Figure 1 partially illustrates, in side view, a railway vehicle provided with a railway braking system acting on a brake disc of the railway vehicle via linings.
• Figure 2 is similar to Figure 1, showing the vehicle in top view.
• Figure 3 is similar to Figure 1, showing the vehicle seen from below.
• Figure 4 is an isolated perspective view of the railway braking system visible in Figures 1 to 3.
• Figure 5 is similar to Figure 4, showing the railway braking system from a different viewing angle.
• Figure 6 shows only partially and in exploded perspective the railway braking system.
• Figure 7 is an isolated and partially disassembled perspective view of a railway braking system connection device.
• Figure 8 is a sectional view of the connection device of the railway braking system.
• Figures 1 to 3 partially illustrate a railway vehicle 1 provided with a railway braking system 2 configured here to act on a brake disc 3 of the railway vehicle 1 via linings 4.
• the railway braking system 2 is mechanically secured to a support 5, which can be formed directly or indirectly by a bogie, or by an axle support fixed to the bogie, or by another device of the drive motor type or gearbox also mounted on the bogie.
• the railway braking system 2 Due to the movements inherent to the railway vehicle 1 both in the rolling phase and in the braking or unbraking phase, the railway braking system 2 is mounted with the possibility of pivoting relative to the support 5.
• the railway braking system 2 is here mechanically secured to the railway vehicle 1 only by means of the support 5, through an anchoring member 6 and a connection device 7 of the railway braking system 2 (described below later in more detail).
• the braking action generates braking forces which are therefore transmitted to the railway vehicle 1 only through the support 5 and via the connection device 7 and the anchoring member 6.
• the railway braking system 2 comprises a braking linkage 10 and a service and/or parking brake 11 configured to act on the brake disc 3 via the braking linkage 10.
• the service and/or parking brake 11 conventionally comprises a cylinder, here of the pneumatic type.
• the brake linkage 10 is provided with movable levers 12 mechanically secured at one end to the cylinder of the service and/or parking brake 11, and with lining holders 13 which are mechanically secured to a respective opposite end of the levers 12 and which carry toppings 4.
• the mobile levers 12 are configured to be actuated by the service and/or parking brake 11.
• connection device 7 comprises a lower part 14 and an upper part 15 distinct from the lower part 14.
• connection device 7 further comprises two main pillars 16 which connect the lower part 14 to the upper part 15 and around which the levers 12 are movably mounted.
• connection device 7 further comprises an additional pillar 17 also connecting the lower part 14 to the upper part 15.
• the main pillars 16 are located generally in the same first vertical plane and the additional pillar 17 is located in a second vertical plane offset from the first vertical plane.
• connection device 7 further comprises an attachment portion 18 forming a single anchoring zone by which the railway braking system 2 is configured to be mechanically secured to the support 5 of the railway vehicle 1.
• the additional pillar 17 is arranged closer to the attachment portion 18 than the two main pillars 16.
• the railway braking system 2 further comprises repositioning members 19 which are substantially elastic and each having a first end secured to the upper part 15 of the connection device 7 and a second end secured to one of the respective fittings holders 13.
• These repositioning members 19 make it possible to return the lining holders 13 to a generally vertical position and at the very least in a plane substantially parallel to that of the brake disc 3.
• the anchoring member 6 is provided with return members formed here by elastic rods 20, here made of metal and for example pre-stressed, which are mounted in cooperation with the upper part 15 of the connection device 7 and which present a stable position in which they urge the anchoring member 6 and/or the connection device 7 to return the latter to a predetermined position, for example substantially horizontal.
• connection device 7 extends generally longitudinally between a first end 21 and a second end 22 opposite the first end 21.
• the main pillars 16 are mechanically secured respectively on a first side 23 and on a second side 24 opposite the first side 23, at the level of main upper fixing zones 26 provided at the second end 22 of the upper part 15.
• the additional pillar 17 is mechanically secured at an additional upper fixing zone 27 provided in a central zone 25 located between the first side 23 and the second side 24 and here at the second end 22 of the upper part 15.
• the attachment portion 18 extends longitudinally over the central zone 25 from the first end 21 towards the second end 22.
• the upper part 15 of the connection device 7 is provided with a first arm 28 extending from a first of the main upper fixing zones 26 of one of the two main pillars 16, and with a second arm 29 extending from a second of the main upper fixing zones 26 of the other of the main pillars 16.
• the first arm 28 and the second arm 29 each join the attachment portion 18 at the central zone 25.
• first arm 28 extends from the second end 22 on the first side 23 towards the central zone 25 and the second arm 29 extends from the second end 22 on the second side 24 towards the central zone 25.
• first arm 28 and the second arm 29 each extend towards the attachment portion 18 and the additional upper fixing zone 27 of the additional pillar 17.
• connection device 7 is solid, without obviously any material between the first arm 28, the second arm 29, the attachment portion 18 and the additional upper fixing zone 27 of the additional pillar 17.
• Orifices 30 are provided in the upper part 15 of the connection device 7, at the level of the main upper fixing zones 26 at the second end 22, for mounting the substantially elastic repositioning members 19 by their respective first end.
• the attachment portion 18 of the connection device 7 has a longitudinal cylindrical wall 31 provided on the central zone 25 at the junction of the first and second arms 28 and 29.
• projections 32 are also formed on the upper part 15 of the connection device 7 on either side of the longitudinal cylindrical wall 31 of the attachment portion 18.
• the projections 32 are here defined by substantially vertical walls arranged one opposite the other and thus providing a space for receiving at least one end of a rod 20 (see below). It is in this receiving space that the rod is, for example, pre-stressed.
• the lower part 15 of the connection device 7 here generally has a C shape.
• the lower part 15 is provided with a main lower fixing zone 33 provided at each free end of the C for the mechanical securing of the main pillars 16, and with an additional lower fixing zone 34 provided in the center of the C for the mechanical securing of the additional pillar 17.
• the main pillars 16 and the additional pillar 17 are mechanically secured by screwing respectively to the main lower fixing zones 33 and to the additional lower fixing zone 34 on the lower part 14 of the connection device 7, and by interlocking by shrink fit on the main upper zones 26 and on the additional upper zone 27 on the upper part 15 of the connection device 7.
• main pillars 16 and the additional pillar 17 are here provided with a thinned lower portion 35, 36 which is threaded and which is passed respectively through the main lower fixing zones 33 and the additional lower fixing zone 34 .
• a washer 37 and a nut 38 are mechanically secured to each of the thinned lower portions 35, 36.
• the additional pillar 17 also has, on the one hand, a thinned intermediate portion 39 which passes through the additional lower fixing zone 34, which has a thickness greater than that of the main lower fixing zones 33 and , on the other hand, a thinned upper portion 40 which passes through the additional upper fixing zone 27, which has a thickness greater than that of the main upper fixing zones 26.
• the main pillars 16 do not have such a thinned intermediate portion and such a thinned upper portion.
• the anchoring member 6 is here formed of two bases 41 mounted at each end of the cylindrical wall 31 of the attachment portion 18, and of a mounting rod 42 introduced at least partially into each base 41 and into the cylindrical wall 31.
• the bases 41 and the mounting rod 42 are pivotally mounted relative to the cylindrical wall 31 and therefore relative to the attachment portion 18.
• one of the two bases 41 is located adjacent to the upper part 15 at the level of its first end 21, while the other of the two bases 41 is positioned above the upper part 15 and facing the additional upper fixing zone 27 of the additional pillar 17.
• the anchoring member 6 further comprises one or more cylindrical rings 43 mounted between the mounting rod 42 and the cylindrical wall 31.
• the anchoring member 6 may also include one or more cylindrical rings (not shown) mounted between the mounting rod 42 and the bases 41.
• the ring(s) mounted between the mounting rod 42 and the cylindrical wall 31 may for example be made of metal or plastic, while the ring(s) mounted between the mounting rod 42 and the bases 41 are for example made of metal.
• the rods 20 are each mounted by a first free, or fitted, end in an orifice provided in one of the respective bases 41, and housed by a second free, or fitted, end opposite the first free end in a respective receiving space formed between the projections 32 on the upper part 15 of the connection device 7.
• the rods 20 have a stable position in which they bias the bases 41 and/or the upper part 15 to place the connection device 7 substantially horizontal.
• the forces generated during braking are transmitted by the two main pillars 16 and by the additional pillar 17 to the connection device 7 and in particular to its upper part 15 then to the support 5 of the vehicle railway 1 via the attachment portion 18 of the connection device 7.
• the main pillars 16 are not simply axes around which the levers 12 are mobile in rotation but also and above all force transmission members.
• the main pillars 16 are supported by the additional pillar 17 which, due to its arrangement near the attachment portion 18, ensures sufficient rigidity to the connection device 7 and optimal transmission of friction forces towards the attachment portion 18.
• the additional pillar 17 is here arranged so as to be in a free space opposite the wheel 3.
• the braking action generates braking forces which are therefore transmitted, via the connection device 7, to the anchoring member 6 and to the support 5 to which the braking system 2 is attached.
• the main pillars may be provided with a thinned intermediate portion and/or a thinned upper portion.
• the additional pillar may be devoid of a thinned intermediate portion and/or a thinned upper portion.
• the lower part and/or the upper part can have a constant thickness or areas that are more or less thick than others.
• the main and/or additional pillars can be screwed onto the lower and upper parts, or fitted together, by shrink fit or not, or welded, and/or glued and/or riveted, and/or possibly secured in position using radial pins.
• the main and/or additional pillars can be mounted non-removable from one of the lower and upper parts.
• the connection device may be provided with several additional pillars, offset or aligned with the main pillars.
• the anchoring member can be formed differently, without a base but with a device including an integrated damping member.
• the rings of the anchoring member can be all metal or all plastic or other materials, for example composite, or the anchoring member has a single ring or does not have a ring.
• the projections defined by substantially vertical walls can be replaced by horizontal grooves, the bottom of which is configured to allow the prestressing of the rods and easy assembly of them.
• the service and/or parking brake can be electromechanical, or hydraulic, or electric, or even manual rather than pneumatic.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Transportation (AREA)
• Braking Arrangements (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=82196735

Family Applications (1)

Country Status (7)

Family Cites Families (3)

• 2022
  • 2022-05-13 FR FR2204568A patent/FR3135435A1/fr active Pending
• 2023
  • 2023-05-12 CA CA3252995A patent/CA3252995A1/fr active Pending
  • 2023-05-12 CN CN202380040218.7A patent/CN119213235A/zh active Pending
  • 2023-05-12 WO PCT/FR2023/050688 patent/WO2023218152A1/fr not_active Ceased
  • 2023-05-12 EP EP23730159.3A patent/EP4522883A1/de active Pending
  • 2023-05-12 US US18/864,934 patent/US20250314275A1/en active Pending
  • 2023-05-12 AU AU2023268713A patent/AU2023268713A1/en active Pending

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