EP3789261A1 - Taststange für ein drehgestell eines schienenfahrzeugs - Google Patents

Taststange für ein drehgestell eines schienenfahrzeugs Download PDF

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Publication number
EP3789261A1
EP3789261A1 EP20194240.6A EP20194240A EP3789261A1 EP 3789261 A1 EP3789261 A1 EP 3789261A1 EP 20194240 A EP20194240 A EP 20194240A EP 3789261 A1 EP3789261 A1 EP 3789261A1
Authority
EP
European Patent Office
Prior art keywords
bogie
sensing bar
bar
sensors
railway vehicle
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.)
Granted
Application number
EP20194240.6A
Other languages
English (en)
French (fr)
Other versions
EP3789261B1 (de
Inventor
Asghar FAROOQUI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Holdings SA
Original Assignee
Alstom Transport Technologies SAS
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Filing date
Publication date
Application filed by Alstom Transport Technologies SAS filed Critical Alstom Transport Technologies SAS
Publication of EP3789261A1 publication Critical patent/EP3789261A1/de
Application granted granted Critical
Publication of EP3789261B1 publication Critical patent/EP3789261B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F3/00—Types of bogies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F9/00—Rail vehicles characterised by means for preventing derailing, e.g. by use of guide wheels
    • B61F9/005—Rail vehicles characterised by means for preventing derailing, e.g. by use of guide wheels by use of non-mechanical means, e.g. acoustic or electromagnetic devices

Definitions

  • the present invention concerns a sensing bar for a bogie of a railway vehicle.
  • sensing bar for a bogie of a railway vehicle having the characteristics defined in independent claim 1, and by a railway vehicle as defined in claim 10.
  • the sensing bar for a bogie is a bar arranged to be fixed to a bogie of a railway car of a railway vehicle running on a railway track.
  • the bar is provided with many sensors, arranged to collect a plurality of data related to the operating conditions of the bogie.
  • the collected data allows performing conditioned based maintenance of the bogie, because these data can be immediately used to plan an intervention on the railway bogie.
  • the sensing bar according to the present invention carries all the sensors on a single member, it is easy to be installed on existing bogies, and it is easy to maintain.
  • the sensing bar is provided with a single connector, capable of acquiring data coming from a plurality of channels, preferably eighteen channels, associated with the respective sensors. These data are then sent, through the connector, to the control unit.
  • the sensing bar allows performing ten monitoring functions. Different parameters are monitored, continuously or conditionally (because all the sensors placed on the sensing bar are suitable for condition based monitoring and maintenance strategy).
  • the measured data, signals representative of said parameters or values of said parameters, are sent to the control unit connected to the sensing bar, this control unit being arranged to elaborate said data to monitor the bogie operating conditions.
  • the parameters are the followings:
  • Figure 1 shows a perspective view of a bogie 1 of a railway vehicle, to which a sensing bar 2 according to the present invention is fixed.
  • Figure 2 shows an enlarged view of the sensing bar 2.
  • the sensing bar 2 is preferably mounted on a leading bogie. As an alternative, the sensing bar 2 is mounted on any other bogie, intermediate or end bogies.
  • control unit 100 arranged to collect the data coming from the sensors and to elaborate them to get the information of interest.
  • the control unit is advantageously part of a data acquisition system of the railway vehicle.
  • the cables for connection of the sensors to the control unit are usually 4-5 mm thick in diameter and they carry both power and data. Cables are not shown in the pictures and preferably half of the cables run on the right side of the sensing bar 2, and half run on the left side of the sensing bar 2.
  • the sensing bar 2 comprises six single-axes accelerometers 4 mounted on a bended solid bar 6 which has a U-shape, to sense accelerations of the bogie 1 along three perpendicular directions X, Y and Z of a Cartesian reference system.
  • the accelerometers 4 output vibration signals.
  • Two first cameras 8 are mounted at the end of the bar 6, in the vertical parts of the U-shape of the bar 6, and they are arranged to acquire respective images of primary suspensions associated with wheels 10 of the bogie 1. Each camera 8 acquires images of right and left primary suspensions of the bogie 1, respectively.
  • the sensing bar 2 further includes at least one microphone 12, preferably two.
  • the sensing bar 2 further includes two first pyrometers 14 mounted towards the end of the bar 6 and arranged to measure the respective temperature of axle boxes of bearings associated with the wheels 10.
  • the sensing bar 2 further comprises one GPS sensor 18 for positioning measurements.
  • the sensing bar 2 further includes two second pyrometers 20, one arranged to measure the temperature of bearings of a gearbox of the railway vehicle, and the other arranged to measure the temperature of a motor of the railway vehicle.
  • the sensing bar 2 further includes two second cameras 22 arranged to acquire respective images of second-axle wheels of the bogie 1 (not shown in the picture), and to study the dynamics, creep and failure evolution of the primary suspensions.
  • the sensing bar 2 there are preferably two accelerometers 4 for each direction of sensing, i.e. the X, Y and Z direction, for redundancy reasons and to ensure consistency of the measurements.
  • two accelerometers 4 for each direction is provided.
  • the bar 6 is advantageously 3.5 meter long and all the sensors above disclosed are connected, as above indicated, to a control unit and represent, altogether, an eighteen channel data acquisition system.
  • Figure 3 shows an enlargement of the zone A of figure 2 wherein it is shown the end of the bar 6 fixed to a plate 28 arranged to be fixed, through the frame 24, to a supporting structure of the bogie 1, as shown in figure 1 .
  • the second and fifth accelerometer 4 starting from the right side of the bar 6 act as obstacle sensors, while the third and fourth accelerometer 4 act as derailment sensors, as here below detailed.
  • the third and fourth accelerometer 4 act as derailment sensors, as here below detailed.
  • only one sensor acts as obstacle sensor or derailment sensor.
  • the sensing bar 2 allows performing many different functions, described here below in detail.
  • a first function is the detection of an obstacle on the railway track.
  • an impact force having a value above a predetermined threshold, preferably of 1KN, on the bar 6 generates a first obstacle signal coming from the second and/or the fifth accelerometer 4.
  • This signal is used by the control unit 100 to trigger an alarm signal, to an emergency brake circuit of the railway vehicle.
  • a second function is the detection of a derailment of the railway car, which corresponds to the wheels 10 throwing off rails of the railway track.
  • the bar 6 is pushed upwards by the rail itself, and this impact generates a signal coming from the third and/or the fourth accelerometer 4, which is used by the control unit to trigger an alarm signal to the emergency brake circuit.
  • the sensing bar 2 allows taking videos or pictures of the space around the sensing bar 2.
  • the first cameras 8 acquire respective images of the primary suspensions of the wheels 10, the second cameras 22 are mounted facing the second-axle wheels, and this enables to take pictures whenever there is abnormal vibration on the front axle, assuming that a similar trend follows also on the following wheel set.
  • the vibration is measured by the accelerometers 4, which output a corresponding vibration signal.
  • the videos acquired are post processed in a manner known per se by the control unit 100. Anomalies detected by the control unit 100 in the videos are used to trigger corresponding alarm signals.
  • images with anomalies are specific frames having differences compared with reference images in idle situation. Images are important to study the evolution of the components and anomalies.
  • sensing bar 2 Another function possible thanks to the sensing bar 2 is capturing noises through the microphones 12 and co-relating them, in a manner per se known in the control unit 100, with the images of the cameras 8 and 22 and the vibration signals of the accelerometers 4, to trigger a wheel flange lubricator disclosed here below and to reduce these anomalies in the following wheels.
  • the two first pyrometer 14 which are preferably laser-based temperature sensors, measure the temperature of the axle boxes of bearings associated with the wheels 10, as above indicated. This allows monitoring the axle bearings for a condition based maintenance plan.
  • the second pyrometers 20 measure the temperature of bearings of the gearbox and of the engine, as above cited. Usually, the rotating components are subjected to wear and tear.
  • the pyrometers 14, 20 can measure the temperature at different locations.
  • the first and the sixth accelerometer 4 produce a smooth sinusoidal wave-like reference signal when the wheel 10 is well contained on the rail, without rubbing on the flange, which is an extended lip shaped edge of the wheel which is a guide running along the inside of the rail. This helps to retain the train on rails during navigation of curves.
  • a vibration output signal is obtained. This vibration output signal helps analysing wear zones of the railway track and quantifies their values.
  • the sensing bar 2 Another function possible thanks to the sensing bar 2 relates to behaviour, vertical displacement and failure evolution, of the primary suspensions.
  • the first cameras 8 focus on the primary suspensions, recording the displacements during running of the railway vehicle and taking/records pictures at defined intervals, or when there is a deviation observed with respect to a predetermined parameter.
  • These displacement data in correlation with accelerations of the railway vehicle measured by the accelerometers 4, allow characterizing the primary suspensions. The difference between two consecutive pictures provides information about the evolution of the suspension, thus allowing prediction of life of the bogie 1.
  • the GPS sensor 18 allows a precise location of the bogie 1 to plan any intervention.
  • the temperature sensor 16 allows detecting high temperatures, which affect the primary suspension, the gear box, the motor and axle bearing temperatures, etc. This is the referent to understand the relative behaviour of all these elements.
  • the vibration and noise data (and, advantageously, also the images) coming from the sensors above disclosed are used by the control unit 100 to trigger a wheel flange lubricator of the railway vehicle.
  • the wheel flange lubricator is a unit, which pumps a lubricant (mineral oil) onto the rails of the railway track, to ease the contact abnormalities between the wheels 10 and the rail by reducing wear and friction.
  • a lubricant mineral oil
  • the sensing bar 2 of the present invention a combined correlation between vibration signals (coming from the accelerometers) and anomalies (detected by the cameras 8, 22 and by the microphone 12) is obtained, and this is used to trigger the wheel flange lubricator to dispense the required amount of lubricant.
  • Figure 4 shows a railway vehicle 100 having a plurality of railway cars, wherein at least one bogie of a railway car is provided with a sensing bar 2 as above disclosed.
  • the main advantage of the sensing bar 2 of the present invention is the integration of all the sensors useful for monitoring the bogie operating conditions in a single component, easy to mount and well connected to the data acquisition system of the railway vehicle 100.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP20194240.6A 2019-09-03 2020-09-03 Taststange für ein drehgestell eines schienenfahrzeugs Active EP3789261B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201941035414 2019-09-03

Publications (2)

Publication Number Publication Date
EP3789261A1 true EP3789261A1 (de) 2021-03-10
EP3789261B1 EP3789261B1 (de) 2024-07-17

Family

ID=72355826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20194240.6A Active EP3789261B1 (de) 2019-09-03 2020-09-03 Taststange für ein drehgestell eines schienenfahrzeugs

Country Status (1)

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EP (1) EP3789261B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040244637A1 (en) * 2003-01-27 2004-12-09 Ensco, Inc. Mount apparatus for mounting a measurement device on a rail car
JP2006327525A (ja) * 2005-05-30 2006-12-07 East Japan Railway Co 車輪フランジ塗油装置およびその制御方法
KR20100082162A (ko) * 2009-01-08 2010-07-16 현대로템 주식회사 장애물 및 탈선 감지 장치
EP2784540A1 (de) * 2013-03-27 2014-10-01 System7-Railsupport GmbH Verfahren und Vorrichtung zur Ermittlung des Verschleißzustandes eines Gleises
US20180339720A1 (en) * 2015-10-20 2018-11-29 Sameer Singh Integrated rail and track condition monitoring system with imaging and internal sensors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040244637A1 (en) * 2003-01-27 2004-12-09 Ensco, Inc. Mount apparatus for mounting a measurement device on a rail car
JP2006327525A (ja) * 2005-05-30 2006-12-07 East Japan Railway Co 車輪フランジ塗油装置およびその制御方法
KR20100082162A (ko) * 2009-01-08 2010-07-16 현대로템 주식회사 장애물 및 탈선 감지 장치
EP2784540A1 (de) * 2013-03-27 2014-10-01 System7-Railsupport GmbH Verfahren und Vorrichtung zur Ermittlung des Verschleißzustandes eines Gleises
US20180339720A1 (en) * 2015-10-20 2018-11-29 Sameer Singh Integrated rail and track condition monitoring system with imaging and internal sensors

Also Published As

Publication number Publication date
EP3789261B1 (de) 2024-07-17

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