WO2022188971A1 - Contact de mise à la terre et son procédé de fonctionnement - Google Patents

Contact de mise à la terre et son procédé de fonctionnement Download PDF

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Publication number
WO2022188971A1
WO2022188971A1 PCT/EP2021/056097 EP2021056097W WO2022188971A1 WO 2022188971 A1 WO2022188971 A1 WO 2022188971A1 EP 2021056097 W EP2021056097 W EP 2021056097W WO 2022188971 A1 WO2022188971 A1 WO 2022188971A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
measuring
sensor
evaluation unit
grounding
Prior art date
Application number
PCT/EP2021/056097
Other languages
German (de)
English (en)
Inventor
Daniel Pfeffer
Original Assignee
Schunk Transit Systems Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schunk Transit Systems Gmbh filed Critical Schunk Transit Systems Gmbh
Priority to EP21712737.2A priority Critical patent/EP4304913A1/fr
Priority to KR1020237032193A priority patent/KR20230152068A/ko
Priority to CN202180095370.6A priority patent/CN116981610A/zh
Priority to US18/280,867 priority patent/US20240157984A1/en
Priority to PCT/EP2021/056097 priority patent/WO2022188971A1/fr
Priority to PCT/EP2021/069348 priority patent/WO2022189009A1/fr
Priority to EP21740555.4A priority patent/EP4304915A1/fr
Priority to TW111107549A priority patent/TW202235840A/zh
Publication of WO2022188971A1 publication Critical patent/WO2022188971A1/fr

Links

Classifications

    • 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
    • B61F15/00—Axle-boxes
    • B61F15/20—Details
    • B61F15/28—Axle-boxes modified to ensure electrical conductivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L15/00—Indicators provided on the vehicle or train for signalling purposes
    • B61L15/0072—On-board train data handling

Definitions

  • the invention relates to a ground contact and a method for operating a rail vehicle, the rail vehicle having a ground contact on a wheel set with an axle and wheels, the ground contact being formed with a housing unit, a contact device and a sensor device, wherein the contact device has a contact piece arranged on a contact surface of an axis, with an electrical sliding contact being formed between the contact surface and the contact piece.
  • Grounding contacts and methods of this type are sufficiently known from the prior art and are regularly used on axles of rail vehicles, in particular electrically powered rail vehicles. Grounding contacts are used to transmit electrical currents through an axle of a wheelset into a rail.
  • the known grounding contacts can be arranged on an axial side of an axle on this and can be connected in a rotationally fixed manner to an axle mount of the rail vehicle or can be connected to the axle mount so that it can rotate relative to the axial side.
  • the grounding contact comprises a housing with a housing cover or a housing cover arranged in a flange-like manner on the axial side. ckung, wherein contact pieces made of graphite are contacted with the axle or corresponding slip rings or grinding wheels for the transmission of a current within the housing.
  • a sensor device or a flange-like sensor housing is also known to attach a sensor device or a flange-like sensor housing to the housing cover.
  • the housing cover has an opening through which, for example, a rotary encoder of the sensor device can detect signals generated by rotation of the axle. These signals are transmitted via a cable to a vehicle controller, which uses them to generate an axle speed, impulses for an engine controller or a brake system. Accordingly, the sensor forwards a signal to a vehicle controller, which further processes the signal for control purposes.
  • a grounding contact is known, for example, from EP 2 423 068 A1.
  • the invention is therefore based on the object of proposing a method for operating a rail vehicle and a grounding contact and a monitoring system with a grounding contact which enables improved operation.
  • This object is achieved by a method having the features of claim 1, a grounding contact having the features of claim 15 and a monitoring system having the features of claim 16 solves ge.
  • the rail vehicle is designed with at least one grounding contact on a wheel set with an axle and wheels, the grounding contact being designed with a housing unit, a contact device and a sensor device, the contact device being on a contact surface of an axle arranged contact piece, wherein an electrical sliding contact is formed between the contact surface and the contact piece, wherein the grounding contact comprises a measuring unit with a measuring device, wherein at least one sensor of a sensor device of the measuring device is arranged on the contact device and/or adjacent to the contact device, wherein by means a measured value of the contact device is recorded by the sensor device, the measured value being processed by a processing device of the measuring device and an operating state of the wheelset and/or a rail descriptive characteristic value is determined.
  • the grounding contact is arranged on the wheel set, which can be a running wheel set, a driving wheel set or a loose wheel set with one or more axles.
  • the axle or the axles of the wheel set each have two wheels, which rest on a running rail of the rail vehicle or a rail and can roll on it.
  • the ground contact is arranged on the axle and has the contact device with at least one contact piece inside the housing unit.
  • the contact device is used to hold and electrically connect the contact piece.
  • the axle or a component arranged on the axle forms the contact surface of the axle, which can be rotated relative to the contact piece.
  • the axis can be contacted radially or axially with the contact piece.
  • the con- clock device comprise a plurality of contact pieces.
  • the contact piece can in particular be made of graphite.
  • the grounding contact comprises a measuring unit with a measuring device, which in turn has a sensor device with at least one sensor.
  • the sensor is arranged on the contact device and/or adjacent to the contact device or as close as possible to the contact device or the contact piece.
  • a measured value of the contact device or the contact piece is recorded by means of the sensor device or the sensor.
  • This measured value is a physical measured variable that has a direct operative relationship with the contact device and can be changed during operation of the grounding contact.
  • the measured value or the measured variable measured with the sensor is now processed by means of the processing device and a characteristic value is determined which is suitable for describing an operating state of the grounding contact and/or the running rail.
  • the characteristic value can be a parameterized value, a characteristic, a key figure or a data set.
  • the characteristic value can also be contained within a data record.
  • the processing device is therefore in the form of at least one digital electronic circuit that can process analog and/or digital signals from the sensor.
  • the processing device can, for example, also be a programmable logic controller (PLC), an integrated circuit (IC) or a computer.
  • the processing device determines the parameter that is suitable for describing the operating state of the ground contact, it is possible to determine the operating state of the ground contact, the wheel set and/or the rail or to monitor the ground contact. Since the operating state of the ground contact is quite is also essentially dependent on the condition or operating condition of the wheel set and/or the rail, the characteristic value can also describe the operating condition of the wheel set and the rail.
  • the operating state can be a state of wear, so that it is then possible to make a statement about the state of wear based on the characteristic value. All in all, maintenance of the grounding contact, the wheelset and the running rail can be carried out in a more targeted manner without having to keep to regular maintenance intervals. Overall, this makes it possible to operate a grounding contact, a wheel set or a rail more cost-effectively, and thus to operate a rail vehicle more economically overall.
  • a rotational speed of the axis, acceleration, frequency, temperature, humidity, force, current, voltage, distance, mass and/or spatial position can be continuously or discontinuously recorded and processed as a measured value.
  • a driving speed or a driving distance of the rail vehicle can be measured with the rotational speed of the axle.
  • a rotary encoder on the axle or another suitable sensor can be used for this purpose, for example.
  • a temperature can be measured with a temperature sensor on the grounding contact or directly on the housing unit or the contact device, so that, for example, possible overheating of a bearing of the axle can be determined.
  • a force can be determined by means of a strain gauge, a force sensor, a pressure sensor or the like. For example, a pressing force of the contact piece can then be measured.
  • a current strength or a voltage can be measured with an ammeter or a voltmeter as a sensor. For example, a current discharged via the grounding contact can then be determined. A location of the ground contact can easily be determined by a satellite navigation system such as GPS. The measured value or the measured values can be determined or processed continuously or continuously. It is also possible to discount the measured values to be recorded and processed continuously, for example at fixed times or on specific occasions.
  • At least one acceleration sensor is used as a sensor, which can then be arranged on the contact device, preferably on the contact piece.
  • the acceleration sensor or vibration sensor can be used to measure a natural frequency and/or resonance frequency of the contact piece or of the entire grounding contact.
  • a movement of the contact piece on the axle can be detected by means of the acceleration sensor, in which case conclusions can be drawn from the movement about a shape of the rail or a flat spot on a wheel rim of the wheel. In this way, for example, evenness along the runway can easily be determined. Special measuring runs or on-site inspections of the running rail to determine such defects are then no longer necessary.
  • a change in the contact piece as a result of wear or abrasion on the axle causes a change in the natural frequency and/or resonance frequency of the contact piece. This can result in a difference between a new and a worn contact piece.
  • the processing device can derive a change in the contact piece from a change in the natural frequency and/or resonance frequency of the contact piece. For example, natural frequencies and/or resonant frequencies of new and worn contact pieces could be stored in the processing device, with the processing device being able to carry out a comparison and determine a state of wear or consumption of the contact piece without further calculations. This wear can then be output in the form of a characteristic value.
  • the processing device can record and store the measured values from sensors and/or the characteristic values at regular time intervals, when there is a change, or continuously. Accordingly, it can be provided that the measured values and/or the characteristic values are only recorded and stored when the values change, in order to keep the volume of data small. Alternatively, it is possible to provide continuous, ie continuous, recording and storage. By storing the measured values and/or characteristic values, it is possible to process them even after they have been recorded. For example, measured values can then be recorded while the rail vehicle is traveling, with the determination of the characteristic value(s) only being able to be carried out during maintenance of the rail vehicle in a depot. For example, a condition of a rail along a route of travel of the rail vehicle can be determined in this way after a journey.
  • the measuring device can transmit the measured values and/or characteristic values to an evaluation unit, in which case the measured values and/or characteristic values can be stored in a database of the evaluation unit and/or can be further processed by means of an evaluation device of the evaluation unit.
  • the evaluation unit can consequently include the database and the evaluation device.
  • the evaluation unit can therefore be used to collect and further process the measured values and/or characteristic values and can be in the form of a computer.
  • the evaluation device can be used to display or output a result of an evaluation by an operator.
  • the evaluation unit can have a range of functions that goes beyond the range of functions of the processing device. In principle, however, it is also possible to integrate the processing device in the evaluation unit and vice versa.
  • such an evaluation unit can also be present independently of the ground contact as an assembly of the rail vehicle.
  • the measured values and/or characteristic values of the measuring device can be transmitted to the evaluation unit via a data connection, with the evaluation unit being arranged at a spatial distance from the measuring unit or being integrated in the measuring unit.
  • the control device or the evaluation unit is integrated in the measuring unit, the data connection can simply be in the form of a line connection.
  • the measuring device such as the processing device and the control device as well as the evaluation unit, at another location on the rail vehicle, for example on a driver's stand.
  • data can be exchanged, for example on the basis of a transmission protocol.
  • the data connection can be established continuously, at regular intervals or based on events. Overall, it is thus possible to collect and evaluate data collected by the measuring device. Various options for evaluation then open up an analysis of specific states and events, with which operation of the grounding contact, the wheelset and the rail or the rail vehicle can be optimized.
  • the data connection can be established via an external data network.
  • the data connection can be via a mobile network,
  • the evaluation unit is arranged at a spatial distance from the measuring unit, it can also be arranged stationary outside of the rail vehicle, far away from the rail vehicle, for example in a building. In particular, this makes it possible to monitor a function of the grounding contact and the wheel set on the rail vehicle without this task having to be performed by a person on the rail vehicle itself.
  • a data connection to the evaluation unit and/or the measuring unit can be established by means of a user unit, it being possible for the measured values and/or characteristic values to be transmitted to the user unit and output.
  • the user unit can be a computer that is independent of the evaluation unit and/or the measuring unit.
  • This computer can be a stationary computer, a mobile radio device or the like, with which a further data connection for data exchange with the evaluation unit and/or the measuring unit can be established.
  • the data can be exchanged, for example, via an external data network such as the Internet.
  • the evaluation unit can be formed, for example, by a server with software that transmits the information contained in the database of the evaluation unit to the user unit. This transmission can consist of providing a website with selected information, for example a current state of wear of the contact piece.
  • the processing device or the evaluation unit can evaluate a time profile of the measured values and/or characteristic values and determine a state of wear of the contact piece, the wheel set and/or the rail, taking into account a time-dependent component relevant to the wear and/or a measured variable-dependent component. In this way, not only can a statement be made about a current state of wear, but it can also be determined approximately at what point in time, for example, a contact piece or a wheel is likely to be worn out. This makes it possible to precisely define and time-optimize a maintenance interval for the grounding contact or other components of the wheelset.
  • the chronological progression can also be used to determine the point in time at which certain events occurred. If events occur repeatedly, this can result in a system tik to be derived. For example, when driving on a certain route section, a poorer condition of a rail or increased wear can be determined.
  • Vibration of the contact piece can be detected by means of the sensor device, with the processing device being able to determine a natural frequency and/or a resonant frequency of the contact piece and/or the axle, with the processing device or the evaluation unit determining a state of wear on the contact piece, the wheel set and/or the rail can determine.
  • a shape in particular a height of the contact piece, can be changed, with the change in shape being able to change the natural frequency and/or the resonant frequency of the contact piece.
  • a degree of wear of the contact piece and/or the axle can be determined by means of the processing device from the natural frequency and/or the resonance frequency.
  • the natural frequency and/or the resonant frequency changes with increasing abrasion of the carbon of the contact piece or a component of the axle, this change can be used to draw conclusions about the degree of wear of the contact piece and/or the axle. Not only can it be determined whether the contact piece is new or completely worn out, but also to what extent the contact piece has been used up.
  • the processing device or the evaluation unit can carry out a pattern analysis of the measured values and/or characteristic values stored over a period of time and derive a key figure from the pattern analysis. It can also be provided to carry out the pattern analysis using artificial intelligence.
  • the processing device or the evaluation unit can relate the measured values of different sensors and/or characteristic values to one another and derive functional dependencies of the measured values and/or characteristic values. In this way, functional dependencies between the sensors can be examined. For example, vibrations or oscillations related to set to a temperature and possibly determined that a bearing of the axle is damaged.
  • a number of other operating states and events as a result of functional dependencies can also be recognized and interpreted, for example the loading status of the rail vehicle or the respective wagons, inclines and curves of the rail, wear on the contact piece as a result of mechanical friction on the axle or on theirs Components, sections of a travel rail with particularly uneven running characteristics of the axle and thus with particularly high or particularly low wear, a wear rate depending on driving behavior, such as acceleration or standstill of the rail vehicle, damage to components of the wheelset, the axle, the wheels Bearings and on the contact device, a current dissipation via the grounding contact and the resulting faults in components, a state of wear components of the wheel set, such as bearings, joints, structural elements, a loss of components, for example in F as a result of impact with an obstacle, as well as a position, speed, acceleration and direction of travel of the rail vehicle. It is possible to react accordingly to these states and events mentioned above as examples by means of maintenance measures, an adaptation of the driving behavior of the rail vehicle or other suitable
  • a position sensor of the sensor device can be used to determine a location of the grounding contact, with the location being able to be assigned to the characteristic values, with the evaluation unit being able to determine a wear condition of the rail.
  • the position sensor can, for example, determine a position of the ground contact and thus of the vehicle via satellite navigation.
  • the relevant location can be assigned to an event or measured value.
  • the state of wear of the rail by means of the evaluation unit, for example by evaluating vibrations of the contact device or of the contact piece along the rail transmitted by the wheels.
  • the contact device can have a different vibration behavior when the rail is heavily worn. Steps, evenness and curves on the rail can also be determined and assigned to a position on the route. This can be used to influence the speed of the rail vehicle in the travel sections of the route that are localized in this way.
  • the evaluation unit can process characteristic values of measuring units with several earth contacts. In this way, the evaluation unit can process characteristic values of a number of grounding contacts arranged on a single rail vehicle or wheel set. A comparison of the characteristic values of the grounding contacts can further increase the accuracy of a measurement or a monitoring. In addition, characteristic values of grounding contacts that are arranged on different rail vehicles can be processed with the evaluation unit. This can also significantly improve the accuracy of measurements and monitoring of the rail vehicles or the respective rails. Among other things, an up-to-date and constantly changing state of a route network and the traffic on it can be ing rail vehicles can be won. A resulting optimization of an operating state can significantly reduce operating costs. Also, a regular and frequent inspection of the infrastructure and the rail vehicles is no longer necessary and vehicle safety during operation is significantly increased. There is also no need to carry out special measurement runs.
  • the grounding contact according to the invention for an axle of a wheel set of a rail vehicle is designed with a housing unit, a contact device and a sensor device, the contact device having a contact piece arranged on a contact surface of the axle, an electrical sliding contact being able to be formed between the contact surface and the contact piece is, wherein the grounding contact comprises a measuring unit with a measuring device, wherein at least one sensor of a sensor device of the measuring device is arranged on the contact device and/or adjacent to the contact device, wherein a measured value of the contact device can be recorded by means of the sensor device, wherein by means of a processing device the Measuring device, the measured value can be processed and a characteristic value describing an operating state of the wheelset and/or a ticket can be determined.
  • the housing unit can be formed from a housing body and a housing cover. Further advantageous embodiments of a grounding contact result from the feature descriptions of the dependent claims relating back to method claim 1.
  • the monitoring system comprises at least one rail vehicle with at least one earthing contact according to the invention.
  • the monitoring system can include a plurality of measuring units and an evaluation unit for processing measured values and/or characteristic values of the measuring units of a number of grounding contacts. As already described above, this makes it possible to monitor a number of grounding contacts of a rail vehicle or a number of rail vehicles with grounding contacts with a single evaluation unit.
  • the monitoring system can consequently include a plurality of rail vehicles, each with at least one ground contact. It can also be provided that the rail vehicles each have a plurality of grounding contacts.
  • FIG. 1 shows a first embodiment of a grounding contact on a rail vehicle in a side view
  • FIG. 2 shows a second embodiment of a grounding contact on a rail vehicle in a sectional view
  • FIG. 3 shows a schematic representation of an embodiment of a measuring unit
  • FIG. 4 shows a schematic representation of a monitoring system.
  • FIG. 1 shows a grounding contact 10 on an axle 11 of a rail vehicle 12, which is only partially shown here.
  • the axle 11 has two wheels 13, each of which can roll on a rail 14.
  • a bearing device device 16 for the rotatable mounting of the axis 1 1 arranged.
  • the axis 11 is ver with a damping device 17 with a frame 18 of a wheel set 19 of the rail vehicle 12 connected.
  • the grounding contact 10 is flanged to the bearing device 16 .
  • FIG. 2 shows a sectional view of a grounding contact 20 on an axle of a rail vehicle that is not shown in detail here.
  • An axial end cap 21 of the axle is shown here with a dot-dash line.
  • a bearing block of the axle with which the grounding contact 20 is screwed, also not shown here to simplify the illustration.
  • the grounding contact 20 includes a Gepurein unit 22, which is formed solely from a housing body 23 and a hous cover 24 housin.
  • a contact device 26 of the grounding contact 20 is formed here from a contact disk 27 and from contact pieces 28 consisting essentially of graphite.
  • the contact pieces 28 are accommodated in a contact piece holder 29 and are each pressed against the contact disk 27 with a spring device 30 to form an electrical sliding contact.
  • the contact pieces 28 are further electrically connected to the contact piece holder 29 by means of stranded wires 31, with a connecting piece 32 being connected to the contact piece holder 29 with a cable 33 which electrically connects the ground contact 20 to a motor in general, as is known.
  • a sensor device 61 which has an acceleration sensor not shown here sensor.
  • the acceleration sensor or another suitable sensor, can be arranged on the housing unit 22 or the contact device 26 or the grounding contact 20 .
  • Signals obtained for the acceleration sensor are processed further by a processing device 62 of a measuring device 63 within the housing cover 24 and via a transmission device 64 in a here shown external network sent.
  • the sensor device 61 includes a temperature sensor 65 which is arranged on the housing body 23 here.
  • Fig. 3 is a schematic representation of an embodiment of a measuring unit 34.
  • the measuring unit 34 is formed from a measuring device 35 and also includes an evaluation unit 36.
  • the measuring device 35 in turn includes a sensor device 37 with a plurality of sensors 38 and a processing device 39.
  • a supply device 40 is provided, by means of which the measuring device 35 is supplied with electrical energy.
  • the supply device 40 can be an energy storage device, a generator or an external energy supply, for example via a rail vehicle or a derived current.
  • the evaluation unit 36 has a database 41 and an evaluation device 42 and receives data or measured values and/or characteristic values from the processing device 39.
  • the processing device 39 receives measured values from the sensor 38 of the sensor device 37 and processes them.
  • the measured values relate to operating parameters or physical measured variables of a contact device of a ground contact, not shown here, in the manner of the ground contacts shown by way of example in FIGS.
  • the processing device 39 processes the measured values in such a way that a characteristic value describing an operating state of the pantograph in question and/or a busbar is determined.
  • the characteristic values determined in each case are transmitted continuously or successively from the processing device 39 to the evaluation unit 36 and stored there in the database 41 or further processed or prepared with the evaluation device 42 .
  • the 4 shows a monitoring system 47 with a measuring unit 48.
  • the monitoring system 47 can have a plurality of measuring units 48.
  • the measuring unit 48 has a measuring device 49 which has a transmission device device 50 includes.
  • the transmission device 50 receives data or measured values and/or characteristic values from the processing device 39 .
  • An evaluation unit 54 with a database 55 and an evaluation device 56 is connected to the external data network via a further data connection 53
  • a user unit 58 is provided, which is connected to the external data network 51 by a further data connection 59 .
  • the user unit 59 can thus exchange data with the evaluation unit 54, i.e. data from the measuring units 48 processed by the evaluation unit 54 can be output or displayed via the user unit 58 and made available for further use.
  • the user unit 58 can also be connected directly to the evaluation unit 54 via a direct data connection 60 . Overall, it is thus possible to obtain measured values via sensors 38 attached to grounding contacts, not shown here, and to transmit these directly via the external data network 51, for example the Internet, to the evaluation unit 54 for storage and evaluation. Functional relationships of the data can thus be used, evaluated and interpreted. The results of these evaluations can be made available to an end user via the user unit 58 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

L'invention concerne un procédé pour le fonctionnement d'un véhicule ferroviaire comportant un contact de mise à la terre (20), un contact de mise à la terre et un système de surveillance, le véhicule ferroviaire ayant le contact de mise à la terre sur un essieu monté avec un essieu et des roues, le contact de mise à la terre comportant une unité de logement (22), un dispositif de contact (26) et un dispositif de détection (61), le dispositif de contact présentant une pièce de contact (28) disposé sur une surface de contact d'un essieu, un contact glissant électrique étant formé entre la surface de contact et la pièce de contact, le contact de mise à la terre comprenant une unité de mesure dotée d'un dispositif de mesure (63), au moins un capteur (65) d'un dispositif de détection (61) du dispositif de mesure étant disposé sur le dispositif de contact et/ou adjacent au dispositif de contact, une valeur mesurée du dispositif de contact étant détectée au moyen du dispositif de détection, la valeur de mesurée étant traitée au moyen du dispositif de traitement (62) du dispositif de mesure, et une valeur caractéristique décrivant un état de fonctionnement de l'essieu monté et/ou d'un rail est déterminée.
PCT/EP2021/056097 2021-03-10 2021-03-10 Contact de mise à la terre et son procédé de fonctionnement WO2022188971A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP21712737.2A EP4304913A1 (fr) 2021-03-10 2021-03-10 Contact de mise à la terre et son procédé de fonctionnement
KR1020237032193A KR20230152068A (ko) 2021-03-10 2021-03-10 그라운드 접촉부 및 동작시키기 위한 방법
CN202180095370.6A CN116981610A (zh) 2021-03-10 2021-03-10 地面接触器和操作方法
US18/280,867 US20240157984A1 (en) 2021-03-10 2021-03-10 Grounding contact and method for operating
PCT/EP2021/056097 WO2022188971A1 (fr) 2021-03-10 2021-03-10 Contact de mise à la terre et son procédé de fonctionnement
PCT/EP2021/069348 WO2022189009A1 (fr) 2021-03-10 2021-07-12 Procédé de surveillance de véhicules ferroviaires
EP21740555.4A EP4304915A1 (fr) 2021-03-10 2021-07-12 Procédé de surveillance de véhicules ferroviaires
TW111107549A TW202235840A (zh) 2021-03-10 2022-03-02 接地觸頭及操作方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2021/056097 WO2022188971A1 (fr) 2021-03-10 2021-03-10 Contact de mise à la terre et son procédé de fonctionnement

Publications (1)

Publication Number Publication Date
WO2022188971A1 true WO2022188971A1 (fr) 2022-09-15

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PCT/EP2021/056097 WO2022188971A1 (fr) 2021-03-10 2021-03-10 Contact de mise à la terre et son procédé de fonctionnement

Country Status (6)

Country Link
US (1) US20240157984A1 (fr)
EP (1) EP4304913A1 (fr)
KR (1) KR20230152068A (fr)
CN (1) CN116981610A (fr)
TW (1) TW202235840A (fr)
WO (1) WO2022188971A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0958984A1 (fr) * 1998-05-18 1999-11-24 Alstom France SA Bougie de véhicule ferroviaire
DE19920384C1 (de) * 1999-05-04 2000-08-03 Stemmann Technik Gmbh Erdungskontakt
EP1551094A1 (fr) * 2002-10-07 2005-07-06 Mitsubishi Denki Kabushiki Kaisha Machine electrique rotative pour vehicule
EP2423068A1 (fr) 2010-08-26 2012-02-29 Schunk Bahn- und Industrietechnik GmbH Contact de mise à la terre

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0958984A1 (fr) * 1998-05-18 1999-11-24 Alstom France SA Bougie de véhicule ferroviaire
DE19920384C1 (de) * 1999-05-04 2000-08-03 Stemmann Technik Gmbh Erdungskontakt
EP1551094A1 (fr) * 2002-10-07 2005-07-06 Mitsubishi Denki Kabushiki Kaisha Machine electrique rotative pour vehicule
EP2423068A1 (fr) 2010-08-26 2012-02-29 Schunk Bahn- und Industrietechnik GmbH Contact de mise à la terre

Also Published As

Publication number Publication date
US20240157984A1 (en) 2024-05-16
CN116981610A (zh) 2023-10-31
KR20230152068A (ko) 2023-11-02
TW202235840A (zh) 2022-09-16
EP4304913A1 (fr) 2024-01-17

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