WO2015028046A1 - Railway axlebox and railway wagon - Google Patents
Railway axlebox and railway wagon Download PDFInfo
- Publication number
- WO2015028046A1 WO2015028046A1 PCT/EP2013/067645 EP2013067645W WO2015028046A1 WO 2015028046 A1 WO2015028046 A1 WO 2015028046A1 EP 2013067645 W EP2013067645 W EP 2013067645W WO 2015028046 A1 WO2015028046 A1 WO 2015028046A1
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- WO
- WIPO (PCT)
- Prior art keywords
- deformation sensor
- railway
- wagon
- housing
- deformation
- 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.)
- Ceased
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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
Definitions
- the invention relates to a railway axlebox and to a railway wagon comprising such a railway axlebox.
- Railway axleboxes are the linking design element between the rotating wheelset and the quasi-static frame of the bogie or running gear of a railway vehicle.
- Axleboxes and axlebox-bearings/units are vital components in the reliability of a railway rolling stock and have a considerable influence on the operating safety, reliability and economics of railways. Axleboxes are therefore usually checked on a regular basis.
- the wagon weight of railway vehicles is usually measured by railway weighbridges provided in particular spots on train stations, where weight sensors are provided on or below the rails. This has drawbacks in that the wagon weight cannot be measured instantaneously, especially in the course of its loading, and the positioning of the individual wagons on dedicated weighbridges is sometimes very time-consuming.
- axlebox according to claim 1 and by a railway wagon including such an axlebox.
- the invention starts from a railway axlebox including a housing.
- the housing comprises a bore for receiving a rolling bearing and at least one suspension arm for supporting at least a part of the sprung mass of a railway wagon.
- the housing further comprises at least one deformation sensor for measuring the deformation of the housing.
- the deformation sensor is arranged between the bore and the suspension arm, in particular in a kink, the proportionality and linearity between the deformations and the wagon weight is particularly pronounced while the deformation sensor may be protected from detrimental outside influences.
- the housing is provided with a recess or a through-hole, wherein the deformation sensor is arranged so as to at least partially cover the recess.
- the deformations are particularly strong in the region of the recess and relative displacements of two edges of the recess can be detected.
- the deformation sensor is arranged on a rib of the housing, preferably on a region on the rib which is subject to strong deformations.
- a suitable mounting place for the deformation sensor can be determined using finite element simulations.
- the deformation sensor In order to protect the deformation sensor from influence from the outside, it is pro- posed to provide the deformation sensor in a hollow portion of the housing.
- the axlebox is provided with means for transmitting output signals from the deformation sensor to an electronic control means.
- the means may include wire-bound or wireless communication interfaces and the electronic control means may be provided in the axlebox, in a wagon comprising the axlebox or in a train engine of a train comprising the railway axlebox according to the invention.
- the electronic control means should comprise a memory for storing a calibration curve establishing a relation between the output signal of the deformation sensor and the wagon load and/or a sprung mass of the wagon in order to determine a wagon load based on output signals of the deformation sensor.
- the railway axlebox and/or the railway wagon with means enabling a wireless readout of the output signal of the deformation sensor and/or quantities derived from the output signal such as the wagon load determined based on the calibration curve.
- the means can be formed e.g. as an RFID-chip with a resonance frequency determined based on the output signal.
- the control unit receiving the signals from the deformation sensor may evaluate the signals in the course of loading the wagon and may generate a warning signal if a threshold value is reached.
- control unit and/or the processor may be configured to continuously monitor the output signals of the deformation sensor while the wagon is driving in order to detect anomalies such as breakage of the parts etc.
- the bearing is provided with a sensor unit for determining wheel-speeds, bearing temperatures or the like.
- the electronic control means, the memory for storing the calibration and the means enabling a wireless readout may be incorporated in the bearing sensor unit, such that the number of additional components required may be reduced to a minimum.
- controlling unit is configured to evaluate the number of loading/unloading cycles of the axlebox and to generate maintenance information or information regarding a replacement of some axlebox components based on the number of loading/unloading cycles and/or operation times of the axlebox.
- the control unit may further combine this information with information received from vibration sensors, temperature sensors or the like in order to generate indicator parameters for the replacement of the axlebox and/or of the bearing provided in the axlebox.
- control electronics for the deformation sensor with a bogie condition monitoring system using and evaluating the signals of various sensors mounted on a bogie of a railway wagon.
- the invention is applicable to any kind of axlebox including un-sprung axleboxes, plummer block housings, freight car axleboxes, one-piece housings designed to be mounted axially onto the wheelset with the mounted bearing unit, two-piece housings with split designs, enabling a radial mounting of the axlebox or three-piece housings with an additional sleeve to protect the bearing arrangement or unit with or without a lateral arm.
- the at least one deformation sensor measures at a given frequency the axlebox deformation at the deformation sensor location.
- the deformation sensor generates output signals relative to the measured ax- lebox deformation; the said signals being transmitted to an electronic control means.
- the electronic control means determines a wagon load based on output signals of the deformation sensor.
- the process may further comprise a preliminary step wherein each deformation sensor linked to an electronic control means is calibrated in order to generate a calibration curve relating the deformation sensor output signals to the wagon load, the said calibration curve being store into the memory of the electronic control means.
- each axlebox being unique is provided with a self- calibrated deformation sensor for a precise measurement of the wagon load.
- the output signals of the deformation sensor consist in output voltage values.
- the process may be provided with a third and last step consisting in the electronic control means compares the output signals received from the deformation sensor with the calibration curve stored in the electronic control means memory. For a given output signal, a wagon load is then calculated.
- Fig. 1 illustrates a railway axlebox according to the invention including a deformation sensor in a first embodiment of the invention.
- Fig. 2 illustrates a railway axlebox according to the invention including a deformation sensor according to a second embodiment of the invention.
- Fig. 3 illustrates a railway axlebox according to the invention including a sensor unit for a bearing.
- Fig. 1 illustrates, for illustrative purposes, a locomotive or passenger vehicle axlebox with a housing 10 in a one-piece design with two lateral supporting arms 12a, 12b for supporting two helical springs (not illustrated) respectively.
- the housing 10 comprises a central bore 14 for receiving a bearing unit (not shown) such as a self-centering double-row roller bearing, a tapered roller bearing or a cylindrical roller bearing.
- a bearing unit such as a self-centering double-row roller bearing, a tapered roller bearing or a cylindrical roller bearing.
- the housing 10 of the axlebox is a part made of cast iron, steel or light alloy for example, with re-worked surfaces of the bore 14 and comprises various reinforcement- ribs 16a, 16b, 18.
- the overall structure of the housing comprises a central body, and the two supporting arms 12a, 12b extend laterally from a bottom part or the body in a horizontal direction and are formed by the two ends of a generally plate-shaped supporting portion of the housing 10 arranged below the bore 14.
- the upper surface of the supporting arms 12a, 12b join the central portion of the housing 10 so as to form a rounded kink, and the ribs 16a, 16b are provided laterally on both sides of this kink to reinforce the structure.
- a considerable fraction of the load applied to the supporting arms 12a, 12b is therefore transferred to the bore 14 and the bearing via the supporting arms 16a, 16b, in particular via the lowermost portion of these ribs 16a, 16b, which is therefore one of the parts of the housing which is subjected to the strongest deformations.
- a deformation sensor 20 is provided on a top surface of the rib 16a.
- the deformation sensor 20 is formed as a strain gage in the form of an elongated strip, wherein both end portions of the strip are fixed to the upper surface of the rib 16a with a certain preload in the longitudinal direction.
- the deformation sensor 20 is protected through a plastic housing and provided with a signal re-out wire illustrated with dashed lines respectively.
- a similar load sensor 20 may be provides for the second rib 16b and/or for the ribs of the second supporting arm 12b.
- Fig. 2 shows a housing 10 of a railway axlebox according to a second embodiment of the invention.
- the following description focuses on differences to the first embodiment described above, and a repetition of similar features is omitted for the sake of conciseness.
- a through-hole or a recess 22 with an elongated shape oriented vertically is provided in a protected hollow portion 21 surrounded by the rib 18 forming the bottom of the housing 10 and the main body portion of the housing 10 below the bore 14.
- a deformation sensor 20 is provided so as to cover the recess 22 and is arranged horizontally in a center of the recess 22.
- a narrowing or a widening of the slit-like recess 22 leads to a shrinkage or extension of the pre-loaded deformation sensor 22 which can be detected as a voltage signal.
- the deformation sensor 20 covering the recess 22 and provided in a protected hollow portion 21 below the bore 14 of the housing 10 may be provided in addition to the deformation sensors 20 described in the first embodiment of the invention or as a replacement therefore.
- the deformation sensors 20 generate a voltage signal depending on the deformation of the housing 10 and thus on the load applied to the supporting arms 12a, 12b.
- the deformation and thus the change in resistance or voltage of the deformation sensor 20 is, according to Hook's law, a roughly linear function of the load such that the load e.g. the sprung mass of the wagon can be detected based on these signals.
- Fig. 3 illustrates schematically the weight-monitoring system for train wagons using the deformation sensors 20 provided on the axlebox according to the invention.
- the system comprises an electronic control unit 24 including a memory 26 for storing calibration data for mapping the sensor signals to the wagon weight.
- Each deformation sensor 20 is associated to a particular calibration curve recorded in the memory unit 26.
- the control unit 24 may be formed integrally with a control unit of a bogie monitoring system or with an axle sensor unit for measuring the rotation speed and the rotation speed, vibrations or a temperature of the axle supporting the bearing of the axlebox.
- the communication between the deformation sensor 20 and the control unit 24 may be effected in a wireless way by using wireless transmitting/receiving units instead of a cable connection between the sensor 20 and the control unit 24.
- control unit 24 is located centrally in a train wagon or in a railway engine so as to control the weight of all the axles in a wagon or all the wagons in a train.
- the control unit 24 may continuously evaluate the wagon weight determined based on the signals of the deformation sensors 20 and generate warning signals, if e.g. a number of loading/unloading cycles or a parameter determined based on the weight and the distance traveled exceeds a suitable threshold of value.
- the warning signal may be issued to a train driver or to a remote monitoring system monitoring the operation of multiple trains for maintenance purposes.
- piezoelectric sensors may be used as the deformation sensors 20 for measuring a stress or deformation of certain parts of the housing 10.
- the deformation sensor 20 linked to the electronic control means 24 is calibrated in order to generate a calibration curve relating the deformation sensor output signals to the wagon load, the said calibration curve being store into the memory 26 of the electronic control means 24.
- the deformation sensor 20 measures at a given frequency the deformation of the housing 10 at the deformation sensor location.
- the deformation sensor 20 generates an output voltage relative to the measured housing deformation; the said voltage being transmitted to the electronic control means 24.
- the electronic control means 24 compares the output voltage received from the deformation sensor 20 with the calibration curve stored in the electronic control means memory 26. For a given output signal, a wagon load is then calculated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention relates to a railway axlebox including a housing (10), the housing (10) comprising a bore (14) for receiving a rolling bearing and at least one suspension arm (12, 12b) for supporting at least a part of a sprung mass of a railway wagon. It is proposed that the housing (10) further comprises at least one deformation sensor (20) for measuring a deformation of the hosing (10).
Description
Railway axlebox and railway wagon
Field of the invention The invention relates to a railway axlebox and to a railway wagon comprising such a railway axlebox.
Railway axleboxes are the linking design element between the rotating wheelset and the quasi-static frame of the bogie or running gear of a railway vehicle.
All forces acting between these components are transmitted by springs, dampers and guiding elements, supported e.g. by suspension arms of the housing.
Railway axleboxes undergo very harsh conditions, including very low or very high temperature, impacts of gravel, influences of corrosion due to chemicals in de-icing salts, lubricants or cleaning agents.
Axleboxes and axlebox-bearings/units are vital components in the reliability of a railway rolling stock and have a considerable influence on the operating safety, reliability and economics of railways. Axleboxes are therefore usually checked on a regular basis.
On the other hand, the wagon weight of railway vehicles is usually measured by railway weighbridges provided in particular spots on train stations, where weight sensors are provided on or below the rails. This has drawbacks in that the wagon weight cannot be measured instantaneously, especially in the course of its loading, and the positioning of the individual wagons on dedicated weighbridges is sometimes very time-consuming.
Summary of the invention The invention solves the problem of providing a railway axlebox with further functionalities.
This object is achieved by an axlebox according to claim 1 and by a railway wagon including such an axlebox.
Further advantageous embodiments of the invention are defined in the dependent claims.
The invention starts from a railway axlebox including a housing. The housing comprises a bore for receiving a rolling bearing and at least one suspension arm for supporting at least a part of the sprung mass of a railway wagon.
It is proposed that the housing further comprises at least one deformation sensor for measuring the deformation of the housing.
If the deformation sensor is arranged between the bore and the suspension arm, in particular in a kink, the proportionality and linearity between the deformations and the wagon weight is particularly pronounced while the deformation sensor may be protected from detrimental outside influences.
Further, it is proposed that the housing is provided with a recess or a through-hole, wherein the deformation sensor is arranged so as to at least partially cover the recess. The deformations are particularly strong in the region of the recess and relative displacements of two edges of the recess can be detected.
Further, it is proposed that the deformation sensor is arranged on a rib of the housing, preferably on a region on the rib which is subject to strong deformations. A suitable mounting place for the deformation sensor can be determined using finite element simulations.
In order to protect the deformation sensor from influence from the outside, it is pro- posed to provide the deformation sensor in a hollow portion of the housing.
Further, it is proposed that the axlebox is provided with means for transmitting output signals from the deformation sensor to an electronic control means. The means may include wire-bound or wireless communication interfaces and the electronic control means may be provided in the axlebox, in a wagon comprising the axlebox or in a train engine of a train comprising the railway axlebox according to the invention. In any case, the electronic control means should comprise a memory for storing a calibration curve establishing a relation between the output signal of the deformation sensor and the wagon load and/or a sprung mass of the wagon in order to determine a wagon load based on output signals of the deformation sensor.
Further, it is proposed to provide the railway axlebox and/or the railway wagon with means enabling a wireless readout of the output signal of the deformation sensor and/or quantities derived from the output signal such as the wagon load determined based on the calibration curve. The means can be formed e.g. as an RFID-chip with a resonance frequency determined based on the output signal.
The control unit receiving the signals from the deformation sensor may evaluate the signals in the course of loading the wagon and may generate a warning signal if a threshold value is reached.
Further, the control unit and/or the processor may be configured to continuously monitor the output signals of the deformation sensor while the wagon is driving in order to detect anomalies such as breakage of the parts etc. Further, it is proposed that the bearing is provided with a sensor unit for determining wheel-speeds, bearing temperatures or the like. In this case, the electronic control means, the memory for storing the calibration and the means enabling a wireless readout may be incorporated in the bearing sensor unit, such that the number of additional components required may be reduced to a minimum.
It is further proposed that the controlling unit is configured to evaluate the number of loading/unloading cycles of the axlebox and to generate maintenance information or information regarding a replacement of some axlebox components based on the number of loading/unloading cycles and/or operation times of the axlebox. The control unit may further combine this information with information received from vibration sensors, temperature sensors or the like in order to generate indicator parameters for the replacement of the axlebox and/or of the bearing provided in the axlebox.
Further, it is possible to partially integrate the control electronics for the deformation sensor with a bogie condition monitoring system using and evaluating the signals of various sensors mounted on a bogie of a railway wagon.
The invention is applicable to any kind of axlebox including un-sprung axleboxes, plummer block housings, freight car axleboxes, one-piece housings designed to be mounted axially onto the wheelset with the mounted bearing unit, two-piece housings with split designs, enabling a radial mounting of the axlebox or three-piece housings
with an additional sleeve to protect the bearing arrangement or unit with or without a lateral arm.
According to another aspect of the invention, it is proposed a process for measuring the wagon weight by output signals of the deformation sensor according to any of the preceding embodiments and comprising the following steps:
1- The at least one deformation sensor measures at a given frequency the axlebox deformation at the deformation sensor location.
2- The deformation sensor generates output signals relative to the measured ax- lebox deformation; the said signals being transmitted to an electronic control means.
3- The electronic control means determines a wagon load based on output signals of the deformation sensor. Advantageously, the process may further comprise a preliminary step wherein each deformation sensor linked to an electronic control means is calibrated in order to generate a calibration curve relating the deformation sensor output signals to the wagon load, the said calibration curve being store into the memory of the electronic control means.
Thanks to this embodiment, each axlebox being unique is provided with a self- calibrated deformation sensor for a precise measurement of the wagon load.
Advantageously, the output signals of the deformation sensor consist in output voltage values.
Advantageously, the process may be provided with a third and last step consisting in the electronic control means compares the output signals received from the deformation sensor with the calibration curve stored in the electronic control means memory. For a given output signal, a wagon load is then calculated.
The above description of the invention as well as the appended claims, figures and the following description of preferred embodiments show multiple characterizing features of the invention in specific combinations. The skilled person will easily be able to consider further combinations or sub-combinations of these features in order to adapt the invention as defined in the claims to his or her specific needs.
Brief description of the drawings:
Fig. 1 illustrates a railway axlebox according to the invention including a deformation sensor in a first embodiment of the invention.
Fig. 2 illustrates a railway axlebox according to the invention including a deformation sensor according to a second embodiment of the invention.
Fig. 3 illustrates a railway axlebox according to the invention including a sensor unit for a bearing.
Detailed description of the embodiments
Fig. 1 illustrates, for illustrative purposes, a locomotive or passenger vehicle axlebox with a housing 10 in a one-piece design with two lateral supporting arms 12a, 12b for supporting two helical springs (not illustrated) respectively.
The housing 10 comprises a central bore 14 for receiving a bearing unit (not shown) such as a self-centering double-row roller bearing, a tapered roller bearing or a cylindrical roller bearing.
The housing 10 of the axlebox is a part made of cast iron, steel or light alloy for example, with re-worked surfaces of the bore 14 and comprises various reinforcement- ribs 16a, 16b, 18. The overall structure of the housing comprises a central body, and the two supporting arms 12a, 12b extend laterally from a bottom part or the body in a horizontal direction and are formed by the two ends of a generally plate-shaped supporting portion of the housing 10 arranged below the bore 14.
The upper surface of the supporting arms 12a, 12b join the central portion of the housing 10 so as to form a rounded kink, and the ribs 16a, 16b are provided laterally on both sides of this kink to reinforce the structure.
A considerable fraction of the load applied to the supporting arms 12a, 12b is therefore transferred to the bore 14 and the bearing via the supporting arms 16a, 16b, in particular via the lowermost portion of these ribs 16a, 16b, which is therefore one of the parts of the housing which is subjected to the strongest deformations.
A deformation sensor 20 is provided on a top surface of the rib 16a.
The deformation sensor 20 is formed as a strain gage in the form of an elongated strip, wherein both end portions of the strip are fixed to the upper surface of the rib 16a with a certain preload in the longitudinal direction.
The deformation sensor 20 is protected through a plastic housing and provided with a signal re-out wire illustrated with dashed lines respectively. Optionally, a similar load sensor 20 may be provides for the second rib 16b and/or for the ribs of the second supporting arm 12b.
Fig. 2 shows a housing 10 of a railway axlebox according to a second embodiment of the invention. The following description focuses on differences to the first embodiment described above, and a repetition of similar features is omitted for the sake of conciseness. In the embodiment of Fig. 2, a through-hole or a recess 22 with an elongated shape oriented vertically is provided in a protected hollow portion 21 surrounded by the rib 18 forming the bottom of the housing 10 and the main body portion of the housing 10 below the bore 14.
Heavy loads applied on the supporting arms 12a, 12b lead to a bending of the plate- liked base portion of the housing 10 and to an extension of the width of the recess 22.
A deformation sensor 20 is provided so as to cover the recess 22 and is arranged horizontally in a center of the recess 22. A narrowing or a widening of the slit-like recess 22 leads to a shrinkage or extension of the pre-loaded deformation sensor 22 which can be detected as a voltage signal.
The deformation sensor 20 covering the recess 22 and provided in a protected hollow portion 21 below the bore 14 of the housing 10 may be provided in addition to the deformation sensors 20 described in the first embodiment of the invention or as a replacement therefore. In any case, the deformation sensors 20 generate a voltage signal depending on the deformation of the housing 10 and thus on the load applied to the supporting arms 12a, 12b. The deformation and thus the change in resistance or voltage of the deformation sensor 20 is, according to Hook's law, a roughly linear function of the load such that the load e.g. the sprung mass of the wagon can be detected based on these signals.
Fig. 3 illustrates schematically the weight-monitoring system for train wagons using the deformation sensors 20 provided on the axlebox according to the invention. The system comprises an electronic control unit 24 including a memory 26 for storing calibration data for mapping the sensor signals to the wagon weight. Each deformation sensor 20 is associated to a particular calibration curve recorded in the memory unit 26.
The control unit 24 may be formed integrally with a control unit of a bogie monitoring system or with an axle sensor unit for measuring the rotation speed and the rotation speed, vibrations or a temperature of the axle supporting the bearing of the axlebox. The communication between the deformation sensor 20 and the control unit 24 may be effected in a wireless way by using wireless transmitting/receiving units instead of a cable connection between the sensor 20 and the control unit 24.
The latter is particularly advantageous if the control unit 24 is located centrally in a train wagon or in a railway engine so as to control the weight of all the axles in a wagon or all the wagons in a train. The control unit 24 may continuously evaluate the wagon weight determined based on the signals of the deformation sensors 20 and generate warning signals, if e.g. a number of loading/unloading cycles or a parameter determined based on the weight and the distance traveled exceeds a suitable threshold of value. The warning signal may be issued to a train driver or to a remote monitoring system monitoring the operation of multiple trains for maintenance purposes.
It goes without saying that in other embodiments of the invention piezoelectric sensors may be used as the deformation sensors 20 for measuring a stress or deformation of certain parts of the housing 10.
The invention also concerns a process for measuring the wagon weight by output signals of the deformation sensor according to any of the preceding embodiments and comprising the following steps:
0- The deformation sensor 20 linked to the electronic control means 24 is calibrated in order to generate a calibration curve relating the deformation sensor output signals to the wagon load, the said calibration curve being store into the memory 26 of the electronic control means 24.
The deformation sensor 20 measures at a given frequency the deformation of the housing 10 at the deformation sensor location.
The deformation sensor 20 generates an output voltage relative to the measured housing deformation; the said voltage being transmitted to the electronic control means 24.
The electronic control means 24 compares the output voltage received from the deformation sensor 20 with the calibration curve stored in the electronic control means memory 26. For a given output signal, a wagon load is then calculated.
Claims
1 . Railway axlebox including a housing (10), the housing (10) comprising a bore (14) for receiving a rolling bearing and at least one suspension arm (12, 12b) for supporting at least a part of a sprung mass of a railway wagon,
characterized in that
the housing (10) further comprises at least one deformation sensor (20) for measuring a deformation of the housing (10).
2. Railway axlebox according to claiml , wherein a deformation sensor (20) is arranged between the bore (14) and the suspension arm (12, 12b).
3. Railway axlebox according to one of the preceding claims, wherein the housing (10) is provided with a recess (22) or through-hole and wherein a deforma- tion sensor (20) is arranged so as to at least partially cover the recess (22).
4. Railway axlebox according to one of the preceding claims, wherein a deformation sensor (20) is arranged on a rib (16a) of the housing (10).
5. Railway axlebox according to one of the preceding claims, wherein the housing is provided with a hollow portion (21 ) and wherein a deformation sensor is arranged in the hollow portion (21 ).
6. Railway axlebox according to one of the preceding claims, further com- prising means for transmitting output signals from a deformation sensor (20) to an electronic control means (24).
7. Railway axlebox according to one of the preceding claims, further comprising electronic control means (24) configured to determine a wagon load based on output signals of a deformation sensor (20).
8. Railway axlebox according to claim 7, wherein the electronic control means comprises a memory (26) for storing a calibration curve establishing a relation between an output signal of the deformation sensor (20) and the wagon load.
9. Railway axlebox according to one of the preceding claims, further comprising means (24) enabling a wireless readout of the output signal of the deforma-
tion sensor (20) and/or quantities derived the output signal.
10. Railway wagon including an axlebox according to one of the preceding claims.
1 1. Railway wagon according to claim 10, further comprising electronic control means (24) configured to determine a wagon load based on output signals of the deformation sensor.
12. Railway wagon according to claim 10 or 1 1 , further comprising means for transmitting the output signal of the deformation sensor (20) and/or quantities derived the output signal to a processor provided in a railroad engine of a train comprising the railway wagon.
13. Process for measuring the wagon comprising the following steps:
1- The at least one deformation sensor (20) measures at a given frequency the deformation of the housing (10) at the deformation sensor location.
2- The deformation sensor (20) generates output signals relative to the measured deformation of the housing (10); the said signals being transmitted to an elec- tronic control means (24).
3- The electronic control means (24) determines a wagon load based on output signals of the deformation sensor (20).
14. Process according to claim 13 comprising a preliminary step wherein each deformation sensor (20) linked to an electronic control means (24) is calibrated in order to generate a calibration curve relating the deformation sensor output signals to the wagon load, the said calibration curve being store into a memory (26) of the electronic control means.
15. Process according to claim 13 or 14 wherein the third and last step consists in the electronic control means (24) comparing the output signals received from the deformation sensor (20) with the calibration curve stored in the electronic control means memory (26) and then for a given output signal, a wagon load is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2013/067645 WO2015028046A1 (en) | 2013-08-26 | 2013-08-26 | Railway axlebox and railway wagon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2013/067645 WO2015028046A1 (en) | 2013-08-26 | 2013-08-26 | Railway axlebox and railway wagon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015028046A1 true WO2015028046A1 (en) | 2015-03-05 |
Family
ID=49111152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/067645 Ceased WO2015028046A1 (en) | 2013-08-26 | 2013-08-26 | Railway axlebox and railway wagon |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2015028046A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT519579A4 (en) * | 2017-03-30 | 2018-08-15 | Pj Messtechnik Gmbh | Device for measuring wheel contact forces of a rail vehicle |
| EP4585489A1 (en) * | 2024-01-11 | 2025-07-16 | Aktiebolaget SKF | Railway axle box body |
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| EP0443953A1 (en) * | 1990-02-21 | 1991-08-28 | Sambre Et Meuse | Bogie with load measuring device for railway vehicles |
| WO2000051869A1 (en) * | 1999-03-04 | 2000-09-08 | Skf Industrie S.P.A. | A railway axle hub unit |
| JP2002079941A (en) * | 2000-09-05 | 2002-03-19 | Hitachi Ltd | Railcar |
| JP2004219160A (en) * | 2003-01-10 | 2004-08-05 | Nsk Ltd | Railway vehicle axle bearing load measurement device and load measurement method |
| US20040251058A1 (en) * | 2003-03-26 | 2004-12-16 | Ensco, Inc. | Axle vertical load measurement device and method |
| KR20120042257A (en) * | 2010-10-25 | 2012-05-03 | 한국철도기술연구원 | Wheel load measuring method of the railway vehicles |
-
2013
- 2013-08-26 WO PCT/EP2013/067645 patent/WO2015028046A1/en not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0443953A1 (en) * | 1990-02-21 | 1991-08-28 | Sambre Et Meuse | Bogie with load measuring device for railway vehicles |
| WO2000051869A1 (en) * | 1999-03-04 | 2000-09-08 | Skf Industrie S.P.A. | A railway axle hub unit |
| JP2002079941A (en) * | 2000-09-05 | 2002-03-19 | Hitachi Ltd | Railcar |
| JP2004219160A (en) * | 2003-01-10 | 2004-08-05 | Nsk Ltd | Railway vehicle axle bearing load measurement device and load measurement method |
| US20040251058A1 (en) * | 2003-03-26 | 2004-12-16 | Ensco, Inc. | Axle vertical load measurement device and method |
| KR20120042257A (en) * | 2010-10-25 | 2012-05-03 | 한국철도기술연구원 | Wheel load measuring method of the railway vehicles |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT519579A4 (en) * | 2017-03-30 | 2018-08-15 | Pj Messtechnik Gmbh | Device for measuring wheel contact forces of a rail vehicle |
| AT519579B1 (en) * | 2017-03-30 | 2018-08-15 | Pj Messtechnik Gmbh | Device for measuring wheel contact forces of a rail vehicle |
| EP4585489A1 (en) * | 2024-01-11 | 2025-07-16 | Aktiebolaget SKF | Railway axle box body |
| FR3158296A1 (en) * | 2024-01-11 | 2025-07-18 | Skf | Railway axle box body |
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