EP4323587A1 - Verfahren und maschine zum stopfen eines gleises - Google Patents
Verfahren und maschine zum stopfen eines gleisesInfo
- Publication number
- EP4323587A1 EP4323587A1 EP22712378.3A EP22712378A EP4323587A1 EP 4323587 A1 EP4323587 A1 EP 4323587A1 EP 22712378 A EP22712378 A EP 22712378A EP 4323587 A1 EP4323587 A1 EP 4323587A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tamping
- current value
- speed
- delivery
- time
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
- E01B27/13—Packing sleepers, with or without concurrent work on the track
- E01B27/16—Sleeper-tamping machines
- E01B27/17—Sleeper-tamping machines combined with means for lifting, levelling or slewing the track
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
- E01B27/13—Packing sleepers, with or without concurrent work on the track
- E01B27/16—Sleeper-tamping machines
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/12—Tamping devices
Definitions
- the invention relates to a method for tamping sleepers of a track grid mounted in a ballast bed using a tamping unit which comprises two opposite tamping tools which, when tamping the respective sleeper, are lowered into the ballast bed and subjected to vibrations and are moved towards one another with a side movement while the track panel is held in a raised position.
- the invention relates to a tamping machine for carrying out the method.
- railway lines with ballasted superstructure require regular correction of the track geometry, with track tamping machines or turnout tamping machines or universal tamping machines being used as a rule.
- Such machines which can be moved cyclically or continuously on the track, usually comprise a measuring system, a lifting/straightening unit and a tamping unit. The track is raised to a specified position by means of the lifting/aligning unit. To fix this new layer, track ballast is tamped and compacted from both sides under a respective sleeper of the track by means of tamping tools located on the tamping unit.
- AT 350097 B discloses a tamping unit with hydraulic auxiliary drives which are connected on the one hand to a rotating eccentric shaft to generate vibrations and on the other hand to pivotable tamping tools.
- AT 339358 B discloses a tamping unit with hydraulic drives which serve in a combined function as auxiliary drives and as vibration generators.
- AT 515801 A4 describes a method for compressing a
- each oscillation cycle caused by a vibration drive is analyzed for at least one tamping tool. Specifically, during an oscillation cycle, a course of a force acting on the tamping tool is recorded over a path covered by the tamping tool. By continuously evaluating these force-displacement curves, the condition of a ballast bed can be recognized in real time and whether sufficient compaction has been achieved.
- the object of the invention is to improve a method of the type mentioned at the outset in such a way that cavities under the sleepers can be optimally filled with ballast in a simple manner. It is also an object of the invention to specify a corresponding tamping machine.
- An evaluation device is used to monitor the delivery speed of at least one tamping tool, with a current value of the delivery speed being compared to a limit value when a specified delivery time or a predefined delivery path is reached, with a message signal indicating whether the current value is above the limit value.
- this effect is used to detect the current filling status. If the current value of the order speed is still above the limit value after a specified provision phase, corresponding information is output by means of the notification signal. For example, an optical or acoustic alarm signal is issued.
- the current filling status can also be indicated by maintaining an alarm signal or by changing the alarm signal when the status changes.
- the notification signal indicates whether, on the basis of the comparison of values, the cavity located under the threshold has already been sufficiently filled or whether the filling is still insufficient. In the latter case, optimal backfilling is achieved with the following measures.
- the notification signal is fed to a display device in order to indicate to an operator that a cavity has not been sufficiently filled below the threshold to be plugged. In this way, the operator is informed that the current delivery process is to be continued and that further tamping processes may be necessary in order to achieve optimal backfilling.
- the notification signal is fed to a control device of the tamping unit, in particular by means of the control device automatically specifying a longer supply duration and/or a changed supply force. This means that no operator intervention is required to optimize the ballast backfill.
- control device automatically initiates a further stuffing process for the threshold that is currently to be stuffed. This measure is particularly advantageous if an available ordering process for the Tamping tool is not sufficient to achieve a desired filling condition.
- An advantageous development of the invention is characterized in that the frequency of the vibrations of the tamping tool is increased when the current value falls below the limit value.
- the current value is continuously compared with the limit value in order to record when an optimal backfilling state has been reached. Only when this optimum filling state is reached do the vibrations transmitted from the tamping tool to the ballast lead to an increased temporary dynamic fluidization of the ballast due to the increased vibration frequency.
- This so-called gravel flow causes the gravel grains to slide with one another with little friction.
- the ballast behaves like a fluid and vibrates independently to a higher storage density. During the backfilling phase, this effect only comes into play to a limited extent due to the lower vibration frequency.
- the upright friction between the ballast grains facilitates the backfilling process because the tamping tools are used to move larger, interlocking ballast packages. Flow around the tamping tools is avoided.
- a value of the delivery speed averaged over a range of the delivery time or the delivery distance can be evaluated as the current value. This compensates for inaccuracies in speed recording or irregularities during the delivery process.
- Another variant provides that the current value is determined as the result of a weighted time or distance integral. Less computing power is required when the current value is a weighted sum of several Measured values of the positioning speed is determined. Irregularities in the supply process are also compensated for with these measures, with certain phases of the supply process being emphasized by a corresponding weighting.
- a weighting is specified depending on a calculated or measured process variable of the tamping process.
- a penetration work or a penetration force during a lowering process of the tamping tool is advantageously determined as such a process variable.
- an adjusted weighting for the formation of the current value of the delivery speed is then derived.
- a further improvement in the evaluation is achieved if a time profile of the delivery speed or the delivery route is fed to a machine learning model as input data.
- a machine learning model For example, a neural network, a support vector machine, a decision tree, a regression analysis or a Bayesian network is set up in the evaluation device.
- Other process variables such as a lifting value of the track grid or a desired additional worker can also serve as input data for the model.
- the output of the model provides a current value that can be used to assess the state of backfilling.
- a sensor system is arranged for detecting a positioning speed, the sensor system being coupled to an evaluation device.
- An algorithm is set up in the evaluation device, which compares a current value of the positioning speed with a limit value.
- the evaluation device is set up to output a message signal that indicates whether the current value is within the specified range comparison time is above the limit value.
- the evaluation device is coupled to a display device for displaying a message.
- the display alerts an operator to an insufficient filling status, whereupon necessary follow-up measures are initiated.
- the evaluation device is coupled to a control device of the tamping unit. As soon as the control device receives the information that the filling is insufficient by means of the alarm signal, measures for further filling of the cavities are automatically initiated. For example, the availability time is extended or another stuffing process is carried out for the current threshold to be stuffed.
- the tamping machine 1 shown in FIG. 1 can be moved by means of rail chassis 2 on rails 3 of a track 4. Sleepers 6 mounted in a ballast bed 5 form a track grid 7 with the rails 3 fastened to them. To carry out the present method, the tamping machine 1 a lifting unit 8 and a tamping unit 9. In addition, a measuring system 10 is arranged for correcting the track position. The units 8, 9 can be adjusted relative to a machine frame 12 via actuators 11.
- the lifting unit 8 is advantageously also provided for laterally straightening the track panel 7 .
- FIG. 1 The tamping unit 9 and a processed section of the track 4 are shown in FIG.
- a tool carrier 14 is guided vertically in a unit frame 13 .
- a driven eccentric shaft is arranged on the tool carrier 14 as a vibration drive 15 .
- Two auxiliary drives 16 are articulated on the eccentric shaft. The rotation of the eccentric shaft causes the auxiliary drives 16 to oscillate, with the respective eccentricity determining the oscillation amplitude.
- tamping tools 17 On the tool carrier 14 opposite tamping tools 17 are mounted with respect to a sleeper 6 to be tamped.
- the respective tamping tool 17 includes a tamping lever 18 whose upper lever arm is connected to the associated auxiliary drive 16 .
- a tamping pick 19 is arranged on the lower lever arm and dips into the ballast bed 5 during the tamping process.
- FIG. 2 shows the tamping unit 9 during a lowering movement 20 of the tamping tools 17, the tamping picks 19 exerting a penetrating force 21 on the ballast bed 5.
- the vibration drive 15 is active, so that the respective tamping pick 19 is subjected to vibrations 22 via the associated tamping lever 18 and the blocked auxiliary drive 16 .
- the machined section of the track panel 7 is lifted into a predetermined desired position by means of the lifting unit 8 with a lifting force 23 .
- cavities 24 form under the sleepers 6 that are still to be tamped, which cavities are to be decayed with gravel during a tamping operation.
- Roller tongs 25 of the lifting unit 8 hold the processed track panel 7 in position until the end of each tamping process.
- At least one tamping tool 17 has a sensor 26 for detecting a positioning speed v.
- This sensor 26 is coupled to an evaluation device 27 to a current value 28 of To compare supply speed v with a stored limit value (threshold value) 29 .
- This comparison of values takes place continuously or at least at a specific point in time after the start of a positioning movement 30.
- the result of that value comparison is subsequently relevant, which is carried out when a predetermined positioning time ti or a predetermined positioning distance s is reached.
- a corresponding default value of the supply time t and/or the supply path s is stored in the evaluation device 27 . When this default value is reached, the additional movement is usually not yet complete.
- the entire envisaged supply time or the entire envisaged supply route is greater than the default value relevant for the comparison of values.
- a corresponding notification signal 31 is output by the evaluation device 27. This indicates that the cavity 24 of the currently blocked sleeper 6 has not yet been sufficiently filled.
- An operator receives the corresponding information via a display device 32 which receives the notification signal 31 . In this way, the operator is able to initiate measures to optimize the filling of the cavity 24.
- the evaluation device 27 is coupled to a control device 33 of the tamping unit 9 for the automated implementation of corresponding measures.
- the message signal 31 initially causes the positioning movement to be continued by means of the control device 33 by means of an adapted control of the positioning drives 16 . It is continuously checked whether the current value 28 of the positioning speed v still reaches the limit value 29 . The maximum possible supply path limits this measure. In addition, a reserve is necessary so that the ballast pushed under the sleeper 6 during the backfilling can be finally compacted. If necessary, the same sleeper 6 is tamped again as a further measure in order to ensure that the cavity 24 is optimally filled. This is checked Process again by comparing the current value 28 of the positioning speed v with the limit value 29.
- the positioning movement 30 begins through a corresponding activation of the positioning drives 16.
- the positioning process initially causes the cavity 24 located under the sleeper 6 to be filled, as shown in FIG.
- the tamping picks 19 exert a constant adjustment force 34 on the ballast grains, because the adjustment drives 16 designed as hydraulic cylinders are subjected to a constant pressure.
- the tamping tools 17 are subjected to vibrations 22, with the vibration frequency advantageously being lower than the frequency when immersed in the ballast bed 5. In this way, the ballast grains remain mobile. The lower frequency prevents excessive fluidization of the ballast grains, so that the ballast grains do not migrate laterally.
- the start of the positioning movement 30 is recorded in the evaluation device 27 in order to compare the current value 28 of the positioning speed v with the stored limit value 29 when the specified positioning time ti is reached.
- the limit value 29 is determined in advance by theoretical analyses, by a simulation or by an experiment and is stored in the evaluation device 27 .
- a first step 35 the track panel 7 is raised, as shown in FIG.
- the delivery speed v and, if applicable, the delivery force 34 are measured in a second step 36.
- the time to is determined from a measurement of the lifting force 23, from which the ballast due to the complete filling of the cavity 24 Threshold 6 pushes up. At this point in time to, the lifting force 23 decreases and the positioning speed v decreases.
- the threshold 29 for the detection, whether the backfilling process is complete corresponds in this example to the speed v measured when the backfill is reached.
- the limit value 29 and/or the point in time ti for carrying out the comparison with the current value 28 of the positioning speed v is determined as a function of other calculated or measured process variables.
- the penetration force 21 or the penetration work during the lowering of the tamping picks 19 into the ballast bed 5 is used as such a process variable.
- the lifting of the track panel 7 by means of the lifting unit 8 and the desired additional force 34 can also serve as process variables for influencing the limit value 29 or the comparison time ti.
- an average speed as the current value 28 of the delivery speed v.
- the positioning speed v is recorded from the beginning of a positioning process and a mean value is continuously formed.
- the average speed can be determined by a weighted time or distance integral or by a weighted sum of several speed measurement values. The weighting can take place as a function of time or distance and can be defined as a function of the process variables mentioned above. If the current value 28 determined in this way is above the limit value 29, insufficient backfilling is identified.
- a final compression process 38 of the backfilled gravel is shown in FIG. This process only occurs when the upstream backfilling process 39 has been completed. Since the resistance of the ballast during filling is lower than in the already filled state, with a constant additional force 34 the additional movement 30 takes place during the filling at a higher speed v than during the final compaction of the filled ballast.
- the corresponding speed profile is shown in Fig. 5.
- the limit value 29 is determined in advance.
- a comparison of the current value 28 of the positioning speed v with the limit value 29 is carried out at a predefined positioning time ti. This first example shows that the current value 28 is still above the limit value 29. This is linked to the information that the backfilling process 39 has not yet been completed.
- the comparison takes place at a later point in time ti' because a longer availability time is specified. Here the current value 28' has already fallen below the limit value 29. The comparison supplies the information that the backfilling process 39 has been completed.
- the speed v is measured or estimated, for example, by measuring the adjustment path on the adjustment cylinder 16, by measuring a pivoting angle of the tamping lever 18, or by measuring a volume flow of an adjustment cylinder 16 or multiple adjustment cylinders 16.
- the course the measured or estimated delivery speed v is used as an input variable for a machine learning model.
- a neural network, a support vector machine, a decision tree, an algorithm for regression analysis or a Bayesian network is set up in the evaluation device 27 .
- Fig. 7 shows a simple evaluation using the evaluation device 27.
- limit value 29 is determined and stored in advance. During each positioning process 40, the positioning speed v is recorded. In a comparison process 41, the current value 28 of the positioning speed v is compared with the stored value Limit 29 compared. From this, an automated decision is made as to whether the current backfilling process 39 has been completed or not. In the event of insufficient backfilling, a corresponding notification signal 31 is output.
- the stuffing process is interrupted after a predetermined number of stuffing processes or if there is an obvious change in the conditions, in order to redetermine the limit value 29 .
- This can be useful, for example, when a new gravel layer changes to an old gravel layer or when the type of sleepers 6 changes. Otherwise, usual changes in the track conditions are compensated for by the described weightings depending on the determined process variables.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50266/2021A AT524861B1 (de) | 2021-04-12 | 2021-04-12 | Verfahren und Maschine zum Stopfen eines Gleises |
| PCT/EP2022/056127 WO2022218614A1 (de) | 2021-04-12 | 2022-03-10 | Verfahren und maschine zum stopfen eines gleises |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4323587A1 true EP4323587A1 (de) | 2024-02-21 |
| EP4323587C0 EP4323587C0 (de) | 2025-05-07 |
| EP4323587B1 EP4323587B1 (de) | 2025-05-07 |
Family
ID=80933682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22712378.3A Active EP4323587B1 (de) | 2021-04-12 | 2022-03-10 | Verfahren und maschine zum stopfen eines gleises |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12612740B2 (de) |
| EP (1) | EP4323587B1 (de) |
| JP (1) | JP2024515171A (de) |
| CN (1) | CN117178092A (de) |
| AT (1) | AT524861B1 (de) |
| WO (1) | WO2022218614A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT17648U1 (de) * | 2021-03-15 | 2022-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren zum Reinigen eines Schotterbettes eines Gleises |
| AT527176A1 (de) * | 2023-04-27 | 2024-11-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Bestimmen der Beschaffenheit eines Gleisbetts mittels eines Stopfaggregats |
| AT527392A1 (de) | 2023-06-27 | 2025-01-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Gleisbaumaschine zum Unterstopfen von Schwellen eines Gleises |
| AT528205B1 (de) | 2024-09-24 | 2025-11-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und System zum Unterstopfen von Gleisschwellen |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT319993B (de) * | 1971-07-14 | 1975-01-27 | Plasser Bahnbaumasch Franz | Fahrbare Gleisnivellier-Stopfmaschine |
| AT339358B (de) | 1974-05-09 | 1977-10-10 | Plasser Bahnbaumasch Franz | Antriebs- und steuereinrichtung fur vibrier- und verstellbare werkzeuge einer gleisbearbeitungsmaschine, insbesondere fahrbare gleisstopfmaschine |
| CH585314A5 (de) * | 1975-01-17 | 1977-02-28 | Matisa Materiel Ind Sa | |
| AT350097B (de) | 1977-02-04 | 1979-05-10 | Plasser Bahnbaumasch Franz | Maschine zum unterstopfen der querschwellen eines gleises |
| CH648621A5 (en) * | 1980-08-28 | 1985-03-29 | Canron Inc Crissier | Intermittently working track-construction machine |
| CH652430A5 (de) * | 1981-01-23 | 1985-11-15 | Canron Inc Crissier | Gleisstopfmaschine. |
| GB0717403D0 (en) * | 2007-09-07 | 2007-10-24 | Jarvis Plc | Track adjustment |
| US8433462B2 (en) * | 2010-06-30 | 2013-04-30 | Harsco Corporation | Drone vehicle |
| AT513973B1 (de) | 2013-02-22 | 2014-09-15 | System7 Railsupport Gmbh | Stopfaggregat für eine Gleisstopfmaschine |
| AT515801B1 (de) * | 2014-09-16 | 2015-12-15 | System 7 Railsupport Gmbh | Verfahren zum Verdichten des Schotterbettes eines Gleises |
| AT517999B1 (de) * | 2015-11-20 | 2018-05-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Stopfaggregat und Verfahren zum Stopfen eines Gleises |
| AT518195B1 (de) * | 2016-01-26 | 2017-11-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren zur Verdichtung der Schotterbettung eines Gleises sowie Stopfaggregat |
| AT520056B1 (de) | 2017-05-29 | 2020-12-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Gleisschotterbetts |
| AT519738B1 (de) * | 2017-07-04 | 2018-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Gleisschotterbetts |
| AT520117B1 (de) * | 2017-07-11 | 2019-11-15 | Hp3 Real Gmbh | Verfahren zum Verdichten eines Schotterbettes eines Gleises |
| AT520791B1 (de) * | 2017-12-21 | 2020-08-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren zum Betreiben eines Stopfaggregats einer Gleisbaumaschine sowie Stopfvorrichtung zur Gleisbettverdichtung und Gleisbaumaschine |
| AT521798B1 (de) * | 2018-10-24 | 2021-04-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Verfahren und Vorrichtung zum Verdichten eines Schotterbettes |
-
2021
- 2021-04-12 AT ATA50266/2021A patent/AT524861B1/de active
-
2022
- 2022-03-10 CN CN202280027969.0A patent/CN117178092A/zh active Pending
- 2022-03-10 JP JP2023562596A patent/JP2024515171A/ja active Pending
- 2022-03-10 WO PCT/EP2022/056127 patent/WO2022218614A1/de not_active Ceased
- 2022-03-10 US US18/280,002 patent/US12612740B2/en active Active
- 2022-03-10 EP EP22712378.3A patent/EP4323587B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20240141596A1 (en) | 2024-05-02 |
| EP4323587C0 (de) | 2025-05-07 |
| AT524861B1 (de) | 2022-10-15 |
| EP4323587B1 (de) | 2025-05-07 |
| US12612740B2 (en) | 2026-04-28 |
| JP2024515171A (ja) | 2024-04-05 |
| AT524861A4 (de) | 2022-10-15 |
| CN117178092A (zh) | 2023-12-05 |
| WO2022218614A1 (de) | 2022-10-20 |
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