EP3870759B1 - Verfahren und vorrichtung zum verdichten eines schotterbettes - Google Patents

Verfahren und vorrichtung zum verdichten eines schotterbettes Download PDF

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Publication number
EP3870759B1
EP3870759B1 EP19779803.6A EP19779803A EP3870759B1 EP 3870759 B1 EP3870759 B1 EP 3870759B1 EP 19779803 A EP19779803 A EP 19779803A EP 3870759 B1 EP3870759 B1 EP 3870759B1
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EP
European Patent Office
Prior art keywords
ballast bed
electric drive
working unit
parameter
evaluation device
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.)
Active
Application number
EP19779803.6A
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German (de)
English (en)
French (fr)
Other versions
EP3870759A1 (de
Inventor
Thomas Philipp
Harald Daxberger
Florian Auer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plasser und Theurer Export Von Bahnbaumaschinen GmbH
Original Assignee
Plasser und Theurer Export Von Bahnbaumaschinen 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.)
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Publication of EP3870759A1 publication Critical patent/EP3870759A1/de
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Publication of EP3870759B1 publication Critical patent/EP3870759B1/de
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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
    • 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
    • E01B27/20—Compacting the material of the track-carrying ballastway, e.g. by vibrating the track, by surface vibrators

Definitions

  • the invention relates to a method for compacting a ballast bed on which sleepers and rails of a track fastened are mounted, by means of a working unit which is arranged on a track construction machine that can be moved on the track, with a signal being recorded during a compacting process and a Parameter for evaluating a condition of the ballast bed is derived.
  • the invention relates to a device for carrying out the method.
  • Tracks with sleepers mounted on a ballast bed and rails fastened to them require regular maintenance.
  • the track is lifted and straightened using a track construction machine in order to create an optimal track position.
  • a compaction of the ballast bed leads to a fixation of this new track layer.
  • the ballast bed also needs to be compacted.
  • the track construction machine comprises a working unit or a plurality of working units.
  • compaction by means of a tamping unit takes place immediately after a lifting process.
  • tamping tools tamping picks
  • This tamping process creates a homogeneous sleeper layer with low settlement behavior.
  • a corresponding track construction machine is referred to as a dynamic track stabilizer.
  • the one made of rails and sleepers The track grid formed is shaken into the ballast bed with horizontal vibrations and a vertical load. In this way, settlements of the track that initially occur after a tamping operation are anticipated in order to increase the transverse displacement resistance of the track.
  • An infrastructure operator responsible for track maintenance needs information about what loads and how many load cycles the compacted ballast bed can absorb before the track geometry needs to be corrected again. Methods are therefore used to determine the properties of the ballast bed and its quality during compaction or after completion of a compaction process.
  • EP 2 770 108 A1 discloses a method for compacting a ballast bed on which sleepers and rails of a track fastened are mounted, by means of a working unit which is arranged on a track construction machine that can be moved on the track, with a signal being detected during a compacting process, according to the preamble of claim 1 .
  • EP 2 770 108 A1 also discloses an apparatus for carrying out this method, according to the preamble of claim 10.
  • the object of the invention is to simplify a method of the type mentioned at the outset.
  • a simplified device for carrying out the method is to be specified.
  • a parameter for evaluating a condition of the ballast bed is derived, and that the working unit comprises an electric drive, by means of which the compaction process is carried out at least partially, that at least one operating variable of the electric drive is fed to the evaluation device, and that a ballast bed parameter is derived from the operating variable by means of the evaluating device.
  • the electric drive itself as a Sensor used to draw conclusions about the compaction process or the condition of the ballast bed. This eliminates the need for sensors arranged separately on the working unit.
  • a continuous assessment of the quality and properties of the ballast bed is possible on a processed section of track without additional measurement and testing effort. This assessment can be made during the compaction process, so that corrective action can be taken immediately if necessary.
  • a mechanical vibration is generated by means of the electric drive, which is transmitted to the ballast bed via mechanical components of the working unit.
  • Vibrations introduced into the ballast bed allow immediate conclusions to be drawn about the condition of the ballast bed. For example, in the case of a hardened ballast bed, increased vibration energy must be applied, with correspondingly changed operating parameters of the electric drive. At least one operating variable can therefore be used to derive a ballast bed parameter for the condition of the ballast bed.
  • a further improvement provides that several compaction processes are carried out in a cyclical sequence and that a course of the ballast bed parameter is derived from a course of the operating variable. In this way, local changes in the ballast bed are detected in a cyclic mode of operation. Further work cycles can thus be adapted to changed circumstances if necessary.
  • the evaluation device is also supplied with a measured variable recorded by a sensor and if the ballast bed parameter is derived from the operating variable and the measured variable.
  • sensors that have already been installed for other purposes can be used.
  • a digital model stored in the evaluation device is used to derive one or more components of the working unit from the company size calculates a model size.
  • the digital model is a static or dynamic model. The degree of detail selected during modeling depends on the given requirements. A simple model is often sufficient to be able to calculate a meaningful model variable.
  • a mechanical model variable is advantageously derived from an electrical operating variable, in particular from a current flowing in the electric drive, by means of an electric motor model stored in the evaluation device. In this way, an instantaneous mechanical state of the working unit can be used to evaluate the compaction process.
  • ballast bed parameter is supplied to a control device and that the working unit is controlled by the control device as a function of the ballast bed parameter. This enables an automated workflow that adapts the compaction process to changed ballast bed properties without the intervention of an operator.
  • the ballast bed parameter is stored in a recording device together with position data of the working unit. In this way, the quality and properties of the ballast bed are documented without additional measurement and testing effort. With this evidence of the compaction results, corresponding driving clearances can be issued immediately for a processed section of road.
  • the device according to the invention for carrying out one of the methods described comprises a machine frame which can be moved via rail undercarriages on a track with sleepers mounted on a ballast bed and rails fastened thereon.
  • a working unit for compacting the ballast bed is mounted on the machine frame, with an evaluation device for determining a parameter for evaluating the condition of the ballast bed being provided.
  • the working unit includes an electric drive, by means of which a compaction process can be carried out at least partially, the electric drive being coupled to the evaluation device and the evaluation device being set up to derive a ballast bed parameter from an operating variable of the electric drive.
  • a digital model of the electric drive is stored in the evaluation device. This means that various model sizes can be calculated from one company size or from several company sizes.
  • the electrical drive drives a vibration generator to generate a mechanical vibration. Vibrations are thus introduced into the ballast bed, with the quality or properties of the ballast bed being inferred from a reaction of the ballast bed on the working unit.
  • the working unit is designed as a tamping unit and that the vibration generator driven by means of the electric drive is coupled via auxiliary drives with tamping tools that can be lowered into the ballast bed and advanced towards one another.
  • the properties of the ballast bed have a direct effect on the electric drive via the tamping tools that have penetrated the ballast bed. This allows solid conclusions to be drawn about the conditions in the ballast bed from the operating parameters of the electric drive.
  • the working unit is designed as a stabilization unit, with the vibration generator driven by the electric drive being coupled to rollers that can roll on the rails in order to transmit vibrations to the ballast bed.
  • the rails and sleepers serve as transmission elements, with the vibrating ballast bed reacting to the vibration generator and its drive. In this way information about the condition of the ballast bed can be derived from the operating parameters of the electric drive.
  • the device includes a recording device which is coupled to the evaluation device in order to log a course of the ballast bed parameter. In this way, a continuous verification of the properties of the processed ballast bed is possible in a simple manner.
  • Working unit 1 shown is designed as a tamping unit and includes a unit frame 2, which is mounted via guides on a machine frame 3 of a track construction machine not described in detail.
  • the working unit 1 is used for processing a track 4 with a ballast bed 5 on which sleepers 6 with rails 7 fastened thereon are mounted.
  • the ballast bed 5 under the sleepers 6 is compacted with the working unit 1 designed as a tamping unit. This happens during the construction and maintenance of track 4.
  • a tool carrier 8 is guided in a height-adjustable manner in the unit frame 2 , with a lowering or lifting movement taking place by means of an associated height adjustment drive 9 .
  • a vibration generator 10 is arranged on the tool carrier 8, to which at least two auxiliary drives 11 are connected.
  • Each auxiliary drive 11 is connected to a pivoting lever 12 of an associated tamping tool 13 .
  • Both pivoting levers 12 are mounted on the tool carrier 8 such that they can move relative to each other about their own horizontal pivot axis 14 .
  • the vibration generator 10 comprises, for example, an eccentric shaft that can be rotated about an axis of rotation, with the auxiliary drives 11 being articulated on eccentric sections of this shaft.
  • the articulation points of the auxiliary drives 11 running around the axis of rotation lead to vibration transmission to the pivoting lever 12.
  • the advantageously adjustable eccentricity determines the vibration amplitude and the speed determines the vibration frequency.
  • a tamping pick is arranged at the free end of each tamping tool 13 .
  • the tamping tools 13 are subjected to vibrations and lowered into the ballast bed 5 .
  • the tamping tines with their end tine plates are placed in relation to one another by means of the auxiliary drives 11 and thereby compact the ballast layer of the sleeper 6.
  • the working unit 1 comprises an electric drive 15, which drives the eccentric shaft in the present example.
  • a torque motor that is flanged to an eccentric housing is particularly well suited, with the eccentric shaft being connected to the rotor of the torque motor.
  • the torque motor is controlled by a control device 16.
  • the control device 16 also controls control valves of the hydraulic drives of the working unit 1. In the present example, these are the height adjustment drive 9 and the auxiliary drives 11.
  • An evaluation device 17 is coupled to the control device 16 .
  • This is, for example, an industrial computer that is set up to receive and evaluate signals.
  • At least one operating variable 18 of the electric drive 15 is supplied to the evaluation device 17 .
  • This operating variable 18 is provided either by the control device 16 or directly by the electric drive 15 .
  • the electric drive 15 causes the compression process at least partially, because the compression of the Ballast bed 5 is significantly influenced by the vibrations of the 13 tamping tools.
  • the compaction depends on the present condition of the ballast bed 5, that is to say on its quality or its physical properties. In the process, counteracting forces of the ballast bed 5 act on the tamping tools 13, as a result of which there is a reaction of the ballast bed 5 on the electric drive 15.
  • FIG. 1 Another exemplary working unit 1 is in 2 a stabilization unit is shown. It is arranged on a machine frame 3 of a track construction machine not described in detail. During operation, the track grid formed from rails 7 and sleepers 6 is made to oscillate by means of the stabilization unit. The vibrations are transmitted to the surrounding ballast bed 5, which compacts it. In this way, after a tamping operation, a settlement of the track grid is anticipated in order to be able to release track 4 immediately for normal operation.
  • This working unit 1 also includes an electric drive 15 of a vibration generator 10.
  • a shaft with imbalances arranged on it is driven.
  • the vibrations are transmitted to the track grid by means of rail rollers 20 pressed against the rails 7 and propagate into the ballast bed 5 .
  • counteracting forces acted back on the track grid which in turn has a repercussion of the quality and properties of the ballast bed 5 on the electric drive 15 .
  • the vibration amplitude depends on the compaction of the ballast bed that is already present or on the resistance to transverse displacement of the ballast bed 5 .
  • a corresponding control device 16 is provided for controlling the electric drive 15, this being connected to the evaluation device 17 for calculating at least one Gravel bed parameter 19 is coupled. At least one operating variable 18 of the electric drive 15 is supplied to the evaluation device 17 for a calculation process 21 .
  • At least one digital static or dynamic model 22 of a component of the working unit 1 is stored in a processor or a memory device.
  • a digital model 22 of an electric motor for the electric drive 15 is stored.
  • a model variable 23 is calculated from an operating variable 18 by means of the digital model 22 .
  • Operating variables 18 are, for example, an electric current, an electric voltage, a pulse duty factor, a magnetic voltage, a magnetic flux, a magnetic field strength, a magnetic flux or a magnetic flux density.
  • Model variables derived from this are, for example, a moment, a force, a speed or angular speed or an acceleration or angular acceleration.
  • a pressure or a volume flow can also be calculated as a model variable.
  • a moment of the electric drive 15 can be calculated from a rotation angle of the rotor and the measured currents using the digital motor model 22 .
  • those forces that act directly on the ballast bed 5 can be determined from a speed or angular velocity and a driving force or a driving torque of the electric drive 15 using a mechanical model of the working unit 1 . Taking into account the known dynamic forces, this results in the forces acting back from the ballast bed 5 on the working unit 1, which serve to derive the ballast bed parameter 19.
  • the model variables 23 can be calculated in components provided specifically for this purpose, in the control device 16 or the evaluation device 17 or in components provided for other tasks Components (e.g. calculation of the engine torque in the power electronics of the engine) take place.
  • a ballast bed parameter 19 is derived with the calculation process 21 merely from an operating variable 18 of the electric drive 15 .
  • the calculation process 21 is carried out by means of a processor.
  • calculation software is set up in the processor, which calculates a parameter 19 from the input variables 18, 23 on the basis of parameters of the working unit 1 and the track 4 and specific calculation specifications.
  • the measured variables 24 are provided, for example, by a sensor system or electronics 25 installed on the working unit 1. It makes sense to use sensors and electrical components that are already provided for other purposes.
  • an operating variable 18 can also be present as a measured variable 24 if the electric drive 15 includes a corresponding sensor system. For example, operating variables 18 or model variables 23 of the electric drive 15 and measured variables 24 are used in order to determine mechanical model variables 23 of the working unit 1 therefrom.
  • the result of the calculation process 21 is at least one ballast bed parameter 19 which is used to assess the quality or properties of the ballast bed 5 .
  • a parameter 19 is determined from the curve of a model variable 23 or several model variables 23 (speed curve, force curve, pressure curve%) of the working unit 1 .
  • energy absorption, extreme values of the forces and stiffnesses derived from a force-position curve can be formed as ballast bed parameters 19 .
  • the evaluation device 17 is coupled to a recording device 26 for documentation of the track processing.
  • a current position of the working unit 1 reported.
  • a course of the ascertained ballast bed parameter 19 is thus stored as a function of the location.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
EP19779803.6A 2018-10-24 2019-09-25 Verfahren und vorrichtung zum verdichten eines schotterbettes Active EP3870759B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA329/2018A AT521798B1 (de) 2018-10-24 2018-10-24 Verfahren und Vorrichtung zum Verdichten eines Schotterbettes
PCT/EP2019/075779 WO2020083596A1 (de) 2018-10-24 2019-09-25 Verfahren und vorrichtung zum verdichten eines schotterbettes

Publications (2)

Publication Number Publication Date
EP3870759A1 EP3870759A1 (de) 2021-09-01
EP3870759B1 true EP3870759B1 (de) 2022-11-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19779803.6A Active EP3870759B1 (de) 2018-10-24 2019-09-25 Verfahren und vorrichtung zum verdichten eines schotterbettes

Country Status (14)

Country Link
US (1) US20210395953A1 (pl)
EP (1) EP3870759B1 (pl)
JP (1) JP7405847B2 (pl)
KR (1) KR20210081330A (pl)
CN (1) CN112955606B (pl)
AT (1) AT521798B1 (pl)
AU (1) AU2019363554B2 (pl)
BR (1) BR112021007669A2 (pl)
CA (1) CA3112052A1 (pl)
EA (1) EA202100084A1 (pl)
ES (1) ES2934470T3 (pl)
HU (1) HUE060490T2 (pl)
PL (1) PL3870759T3 (pl)
WO (1) WO2020083596A1 (pl)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT519934B1 (de) * 2017-05-03 2019-11-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Stopfaggregat zum Unterstopfen von Schwellen eines Gleises
AT524861B1 (de) * 2021-04-12 2022-10-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren und Maschine zum Stopfen eines Gleises
KR102367598B1 (ko) * 2021-10-20 2022-03-31 한국철도공사 굴삭기 장착형 철도궤도 자갈 다짐기
KR102631569B1 (ko) * 2021-11-19 2024-01-31 한국철도공사 멀티플 타이 탬핑 머신의 상태 진단 시스템
AT18149U1 (de) * 2022-09-06 2024-03-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren und Vorrichtung zum Bestimmen der Beschaffenheit, insbesondere des Verdichtungsgrads, eines Gleisbetts

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AT518195B1 (de) * 2016-01-26 2017-11-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren zur Verdichtung der Schotterbettung eines Gleises sowie Stopfaggregat
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AT518693B1 (de) * 2016-05-24 2020-02-15 Plasser & Theurer Exp Von Bahnbaumaschinen G M B H Prüfvorrichtung und Verfahren zum Prüfen eines Stopfaggregates
AT520056B1 (de) * 2017-05-29 2020-12-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren und Vorrichtung zum Verdichten eines Gleisschotterbetts
AT520698B1 (de) * 2017-12-07 2020-09-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren und System zur Belastungsüberwachung eines Stopfaggregates

Also Published As

Publication number Publication date
AU2019363554A1 (en) 2021-04-08
BR112021007669A2 (pt) 2021-07-27
PL3870759T3 (pl) 2023-03-13
AU2019363554B2 (en) 2024-08-29
EA202100084A1 (ru) 2021-08-09
JP2022505738A (ja) 2022-01-14
EP3870759A1 (de) 2021-09-01
AT521798B1 (de) 2021-04-15
CA3112052A1 (en) 2020-04-30
HUE060490T2 (hu) 2023-03-28
CN112955606B (zh) 2023-02-28
KR20210081330A (ko) 2021-07-01
WO2020083596A1 (de) 2020-04-30
AT521798A1 (de) 2020-05-15
CN112955606A (zh) 2021-06-11
US20210395953A1 (en) 2021-12-23
JP7405847B2 (ja) 2023-12-26
ES2934470T3 (es) 2023-02-22

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