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EP1191147A1 - Ballast cleaning machine and method - Google Patents

Ballast cleaning machine and method Download PDF

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Publication number
EP1191147A1
EP1191147A1 EP01890241A EP01890241A EP1191147A1 EP 1191147 A1 EP1191147 A1 EP 1191147A1 EP 01890241 A EP01890241 A EP 01890241A EP 01890241 A EP01890241 A EP 01890241A EP 1191147 A1 EP1191147 A1 EP 1191147A1
Authority
EP
European Patent Office
Prior art keywords
drive
operating pressure
cleaning
ballast
vibration drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01890241A
Other languages
German (de)
French (fr)
Other versions
EP1191147B1 (en
Inventor
Josef Theurer
Bernhard Dr. Lichtberger
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.)
Franz Plasser Bahnbaumaschinen Industrie GmbH
Original Assignee
Franz Plasser Bahnbaumaschinen Industrie 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 Franz Plasser Bahnbaumaschinen Industrie GmbH filed Critical Franz Plasser Bahnbaumaschinen Industrie GmbH
Priority to AT01890241T priority Critical patent/ATE292712T1/en
Publication of EP1191147A1 publication Critical patent/EP1191147A1/en
Application granted granted Critical
Publication of EP1191147B1 publication Critical patent/EP1191147B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
    • E01B27/10—Renewing or cleaning the ballast in situ, with or without concurrent work on the track without taking-up track
    • E01B27/105—Renewing or cleaning the ballast in situ, with or without concurrent work on the track without taking-up track the track having been lifted
    • 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
    • E01B2203/04—Cleaning or reconditioning ballast or ground beneath
    • E01B2203/045—Cleaning or reconditioning ballast or ground beneath the ballast having been taken up

Definitions

  • the invention relates to a method for cleaning ballast under a track Moving a cleaning machine forward at a right-of-way speed, continuous absorption of the ballast and cleaning in one with one hydraulic vibratory drive equipped screening plant, the vibratory drive has an operating pressure during work, and a cleaning machine for cleaning ballast on a track.
  • ballast cleaning machines known for example from AT 375 982 convey with the help of a clearing chain while the machine continues to work gravel located below a track into a screening plant. This is through vibrates a vibration drive and thus separates overburden from Gravel. Both through different overburden shares as well as through different The consistency of the overburden can lead to sudden changes in the sieving capacity come. As a result, the screen quality and strain on the screen are disadvantageous Wise fluctuations.
  • the object of the present invention is to create a method for cleaning ballast of a track that has a largely constant filling the screening plant. Another object of the invention also lies in Creation of a cleaning machine, with little design effort an improved sieving performance can be achieved.
  • This task is accomplished with a procedure for cleaning ballast of a track solved in that the speed of the machine as a function of Changes in the operating pressure of the vibration drive is controlled such that to achieve a constant sieving rate, the right of way when sinking of the operating pressure controlling the vibration drive increases or increases of the operating pressure is reduced.
  • the problem relating to a cleaning machine is achieved in that a Control device with an operating pressure of the vibration drive Pressure sensor and an actuator to influence one on the travel drive effective operating pressure is provided.
  • Such a control loop enables a minimum of design effort an improved application, on the one hand maximizing the sieving performance and, on the other hand, an overload of the screening plant can be reliably excluded. There is thus no need for an operator who has previously been at risk of safety visual check of the filling status of the screening plant.
  • a very simple retrofit is also particularly advantageous Installation in older machines possible.
  • the various drives in particular the travel drive 13 and the Vibratory drive 10 are connected to a hydraulic system 16 via hydraulic lines 15 connected.
  • the vibration and Travel drive 10, 13 is assigned a control device 17 forming a control loop.
  • This essentially consists of the operating pressure of the vibration drive 10 detecting pressure transmitter 18, for example by a servo drive 19 formed actuator 21 for changing an operating pressure of the travel drive 13 and a controller 20 together.
  • the controller 20 has an adjustment option 22. This can advantageously be independent a maximum sieving capacity of the overburden fraction or its consistency be achieved. In addition, it can overload the screening plant 9 exclude reliably.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

A cleaning machine (1) has a sieve unit (9) with hydraulic vibration drive (10), for continuous lifting and cleaning of the ballast (5). The advance speed of the machine is regulated dependent upon variations in the operating pressure of the vibration drive. To achieve constant sieve performance, the speed is raised when the drive operating pressure drops, resp. reduced, when the pressure rises. A regulator unit has a pressure transducer to detect the operational pressure, and a servo member to regulate that pressure.

Description

Die Erfindung betrifft ein Verfahren zur Reinigung von Schotter eines Gleises unter Vorwärtsbewegung einer Reinigungsmaschine mit einer Vorfahrtgeschwindigkeit, einer kontinuierlichen Aufnahme des Schotters und Reinigung in einer mit einem hydraulischen Vibrationsantrieb ausgestatteten Siebanlage, wobei der Vibrationsantrieb im Arbeitseinsatz einen Betriebsdruck aufweist, sowie eine Reinigungsmaschine zur Reinigung von Schotter eines Gleises.The invention relates to a method for cleaning ballast under a track Moving a cleaning machine forward at a right-of-way speed, continuous absorption of the ballast and cleaning in one with one hydraulic vibratory drive equipped screening plant, the vibratory drive has an operating pressure during work, and a cleaning machine for cleaning ballast on a track.

Derartige, beispielsweise durch AT 375 982 bekannte Schotterreinigungsmaschinen fördern mit Hilfe einer Räumkette bei kontinuierlicher Arbeitsvorfahrt der Maschine unterhalb eines Gleises befindlichen Schotter in eine Siebanlage. Diese wird durch einen Vibrationsantrieb in Schwingungen versetzt und trennt somit Abraum vom Schotter. Sowohl durch unterschiedliche Abraumanteile als auch durch unterschiedliche Konsistenz des Abraumes kann es zu sprunghaften Änderungen der Siebleistung kommen. Als Folge davon ist die Siebqualität und Siebauslastung in nachteiliger Weise Schwankungen unterworfen.Such ballast cleaning machines known for example from AT 375 982 convey with the help of a clearing chain while the machine continues to work gravel located below a track into a screening plant. This is through vibrates a vibration drive and thus separates overburden from Gravel. Both through different overburden shares as well as through different The consistency of the overburden can lead to sudden changes in the sieving capacity come. As a result, the screen quality and strain on the screen are disadvantageous Wise fluctuations.

Die Aufgabe der vorliegenden Erfindung liegt nun in der Schaffung eines Verfahrens zur Reinigung von Schotter eines Gleises, das eine weitgehend konstante Befüllung der Siebanlage ermöglicht. Eine weitere Aufgabe der Erfindung liegt auch in der Schaffung einer Reinigungsmaschine, mit der unter geringem konstruktiven Aufwand eine verbesserte Siebleistung erzielbar ist.The object of the present invention is to create a method for cleaning ballast of a track that has a largely constant filling the screening plant. Another object of the invention also lies in Creation of a cleaning machine, with little design effort an improved sieving performance can be achieved.

Diese Aufgabe wird mit einem Verfahren zur Reinigung von Schotter eines Gleises dadurch gelöst, daß die Vorfahrtgeschwindigkeit der Maschine in Abhängigkeit von Änderungen des Betriebsdruckes des Vibrationsantriebes derart gesteuert wird, daß zur Erzielung einer konstanten Siebleistung die Vorfahrtgeschwindigkeit bei Sinken des den Vibrationsantrieb steuernden Betriebsdruckes erhöht bzw. bei Ansteigen des Betriebsdruckes reduziert wird.This task is accomplished with a procedure for cleaning ballast of a track solved in that the speed of the machine as a function of Changes in the operating pressure of the vibration drive is controlled such that to achieve a constant sieving rate, the right of way when sinking of the operating pressure controlling the vibration drive increases or increases of the operating pressure is reduced.

Durch diese Beeinflussung des Fahrantriebes in Abhängigkeit von der sich auf den Betriebsdruck des Vibrationsantriebes auswirkenden Füllmenge der Siebanlage ist auf sehr einfache und wirkungsvolle Weise die Einstellung einer gewünschten konstanten Befüllung der Siebanlage möglich. Daraus resultiert in besonders vorteilhafter Weise eine verbesserte Reinigungsqualität. Außerdem wird eine Überlastung der Siebanlage, wie dies z.B. bei besonders verschmutztem und verklebtem Schotter der Fall sein könnte, zuverlässig ausgeschlossen.By influencing the drive as a function of the Operating pressure of the vibration drive is the filling quantity of the screening plant setting a desired constant in a very simple and effective manner The screening plant can be filled. This results in particularly advantageously an improved cleaning quality. In addition, one Overloading of the screening plant, e.g. for particularly dirty and bonded gravel could be the case, reliably excluded.

Die eine Reinigungsmaschine betreffende Aufgabe wird dadurch gelöst, daß eine Regeleinrichtung mit einem einen Betriebsdruck des Vibrationsantriebes erfassenden Druckgeber und einem Stellglied zur Beeinflussung eines auf den Fahrantrieb wirksamen Betriebsdruckes vorgesehen ist.The problem relating to a cleaning machine is achieved in that a Control device with an operating pressure of the vibration drive Pressure sensor and an actuator to influence one on the travel drive effective operating pressure is provided.

Ein derartiger Regelkreis ermöglicht bei einem Minimum an konstruktivem Aufwand eine verbesserte Einsatzmöglichkeit, indem einerseits die Siebleistung maximierbar ist und andererseits eine Überlastung der Siebanlage zuverlässig ausschließbar ist. Es erübrigt sich damit auch eine bisher unter Sicherheitsgefährdung von der Bedienungsperson visuell vorgenommene Kontrolle des Befüllungszustandes der Siebanlage. Außerdem ist in besonders vorteilhafter Weise auch ein sehr einfacher nachträglicher Einbau in ältere Maschinen möglich.Such a control loop enables a minimum of design effort an improved application, on the one hand maximizing the sieving performance and, on the other hand, an overload of the screening plant can be reliably excluded. There is thus no need for an operator who has previously been at risk of safety visual check of the filling status of the screening plant. In addition, a very simple retrofit is also particularly advantageous Installation in older machines possible.

Weitere Vorteile der Erfindung ergeben sich aus der Zeichnungsbeschreibung.Further advantages of the invention result from the description of the drawing.

Im folgenden wird die Erfindung an Hand eines in der Zeichnung dargestellten Ausführungsbeispieles näher beschrieben.In the following the invention with reference to an embodiment shown in the drawing described in more detail.

Es zeigen:

  • Fig.1 eine Seitenansicht einer Reinigungsmaschine, und
  • Fig.2 eine schematische Darstellung eines Regelkreises.
    • Show it:
  • 1 shows a side view of a cleaning machine, and
  • 2 shows a schematic representation of a control loop.

    • Eine in Fig.1 dargestellte Schotterreinigungsmaschine 1 weist einen über Schienenfahrwerke 2 auf einem Gleis 3 verfahrbaren Maschinenrahmen 4 auf. Die Maschine 1 ist zur Aufnahme von zu reinigendem Schotter 5 mit einer Räumvorrichtung 6 ausgestattet. Diese weist eine durch einen Hydraulikantrieb 7 in Rotation versetzbare, endlose Räumkette 8 auf, mit der unter dem Gleis 3 befindlicher Schotter 5 in eine Siebanlage 9 abwerfbar ist. Diese ist durch einen hydraulischen Vibrationsantrieb 10 in Schwingungen versetzbar. Der aus der Siebanlage 9 kommende gereinigte Schotter 5 ist über ein in Maschinenlängsrichtung verlaufendes Förderband 11 auf das Gleis 3 abwerfbar. Der vom Schotter getrennte Abraum wird über ein weiteres, in Maschinenlängsrichtung verlaufendes Förderband 12 zum vorderen Maschinenende transportiert. Die Maschine 1 wird durch einen Fahrantrieb 13 im Arbeitseinsatz kontinuierlich in der durch einen Pfeil 14 dargestellten Arbeitsrichtung bewegt.A ballast cleaning machine 1 shown in FIG. 1 has one Rail bogies 2 on a track 3 movable machine frame 4. The Machine 1 is for receiving ballast 5 to be cleaned with a Broaching device 6 equipped. This has a hydraulic drive 7 in Rotatable, endless clearing chain 8 with which under the track 3 located gravel 5 can be dropped into a screening plant 9. This is by a hydraulic Vibratory drive 10 vibratable. The one from the screening plant 9 coming cleaned ballast 5 is over a running in the machine longitudinal direction Conveyor belt 11 can be dropped onto track 3. The overburden separated from the ballast is via a further, in the machine longitudinal direction conveyor belt 12 to transported at the front of the machine. The machine 1 is driven by a drive 13 continuously during work in the working direction shown by an arrow 14 emotional.

    Die verschiedenen Antriebe, insbesondere der Fahrantrieb 13 und der Vibrationsantrieb 10, sind über Hydraulikleitungen 15 an ein Hydrauliksystem 16 angeschlossen.The various drives, in particular the travel drive 13 and the Vibratory drive 10 are connected to a hydraulic system 16 via hydraulic lines 15 connected.

    Wie aus der schematischen Darstellung in Fig.2 hervorgeht, ist dem Vibrations- und Fahrantrieb 10,13 eine einen Regelkreis bildende Regeleinrichtung 17 zugeordnet. Diese setzt sich im wesentlichen aus einem den Betriebsdruck des Vibrationsantriebes 10 erfassenden Druckgeber 18, einem beispielsweise durch einen Servoantrieb 19 gebildeten Stellglied 21 zur Änderung eines Betriebsdruckes des Fahrantriebes 13 und einem Regler 20 zusammen.As can be seen from the schematic illustration in FIG. 2, the vibration and Travel drive 10, 13 is assigned a control device 17 forming a control loop. This essentially consists of the operating pressure of the vibration drive 10 detecting pressure transmitter 18, for example by a servo drive 19 formed actuator 21 for changing an operating pressure of the travel drive 13 and a controller 20 together.

    Insbesondere durch Verklebung von Abraum mit dem Schotter 5 kommt es zu einer oft sprunghaften Änderung der Siebleistung in der Siebanlage 9. Dies führt zu einer verstärkten Befüllung der Siebanlage 9 und damit verbunden zu einer Erhöhung des Betriebsdruckes für den Vibrationsantrieb 10. Diese Betriebsdruckerhöhung wird durch den Druckgeber 18 dem Regler 20 zugeführt, der durch eine entsprechende Stellgröße das Stellglied 21 bzw. den Servoantrieb 19 derartig beeinflußt, daß der Betriebsdruck für den Fahrantrieb 13 entsprechend reduziert wird. Als Folge davon wird die Vorfahrtgeschwindigkeit der Maschine 1 verringert, so daß durch die Räumkette 8 weniger Schotter 5 aufgenommen und damit auch weniger Schotter 5 der Siebanlage 9 zugeführt wird. Dies führt wiederum zu einer Reduktion der in der Siebanlage 9 befindlichen Schottermasse, bis eine entsprechende Verringerung des Betriebsdruckes des Vibrationsantriebes 10 durch den Druckgeber 18 registriert wird. In weiterer Folge wird durch den Regler 20 wiederum der Betriebsdruck für den Fahrantrieb 13 und damit die Vorfahrtgeschwindigkeit der Maschine 1 erhöht, bis die durch den Regler 20 eingestellte Siebleistung erreicht ist.In particular by glueing overburden to the ballast 5 there is a often abrupt change in the screening performance in the screening plant 9. This leads to a increased filling of the screening plant 9 and associated with an increase in Operating pressure for the vibration drive 10. This increase in operating pressure through the pressure transmitter 18 to the controller 20, which is supplied by a corresponding Manipulated variable affects the actuator 21 or the servo drive 19 such that the Operating pressure for the drive 13 is reduced accordingly. As a consequence of this the forward speed of the machine 1 is reduced, so that by the Clearing chain 8 less ballast 5 added and thus less ballast 5 the screening plant 9 is supplied. This in turn leads to a reduction in the Screening plant 9 gravel mass until a corresponding reduction in Operating pressure of the vibration drive 10 is registered by the pressure transmitter 18. Subsequently, the operating pressure for the Travel drive 13 and thus the right of way of the machine 1 increased until the sieving capacity set by the controller 20 is reached.

    Für die Einstellung einer bestimmten konstanten Siebleistung der Siebanlage 9 weist der Regler 20 eine Einstellmöglichkeit 22 auf. Damit kann in vorteilhafter Weise unabhängig vom Abraumanteil bzw. dessen Konsistenz eine maximale Siebleistung erzielt werden. Außerdem läßt sich damit eine Überlastung der Siebanlage 9 zuverlässig ausschließen.For the setting of a certain constant sieving capacity of the sieving system 9 points the controller 20 has an adjustment option 22. This can advantageously be independent a maximum sieving capacity of the overburden fraction or its consistency be achieved. In addition, it can overload the screening plant 9 exclude reliably.

    Claims (2)

    Verfahren zur Reinigung von Schotter eines Gleises unter Vorwärtsbewegung einer Reinigungsmaschine (1) mit einer Vorfahrtgeschwindigkeit, einer kontinuierlichen Aufnahme des Schotters (5) und Reinigung in einer mit einem hydraulischen Vibrationsantrieb (10) ausgestatteten Siebanlage (9), wobei der Vibrationsantrieb (10) im Arbeitseinsatz einen Betriebsdruck aufweist, dadurch gekennzeichnet, dass die Vorfahrtgeschwindigkeit der Maschine (1) in Abhängigkeit von Änderungen des Betriebsdruckes des Vibrationsantriebes (10) derart gesteuert wird, dass zur Erzielung einer konstanten Siebleistung die Vorfahrtgeschwindigkeit bei Sinken des den Vibrationsantrieb (10) steuernden Betriebsdruckes erhöht bzw. bei Ansteigen des Betriebsdruckes reduziert wird.Method for cleaning ballast of a track with forward movement of a cleaning machine (1) with a forward speed, a continuous pick-up of the ballast (5) and cleaning in a screening plant (9) equipped with a hydraulic vibration drive (10), the vibration drive (10) in Work insert has an operating pressure, characterized in that the forward speed of the machine (1) is controlled as a function of changes in the operating pressure of the vibration drive (10) in such a way that to achieve a constant sieving power, the forward speed increases when the operating pressure controlling the vibration drive (10) drops or is reduced when the operating pressure increases. Reinigungsmaschine (1) zur Reinigung von Schotter (5) eines Gleises (3), mit durch einen Fahrantrieb (13) beaufschlagbaren Schienenfahrwerken (2) und einer durch einen Vibrationsantrieb (10) in Schwingungen versetzbaren Siebanlage (9), sowie mit einem Hydrauliksystem (16) zur Beaufschlagung von Fahr- und Vibrationsantrieb (13,10), gekennzeichnet durch eine Regeleinrichtung (17) mit einem einen Betriebsdruck des Vibrationsantriebes (10) erfassenden Druckgeber (18) und einem Stellglied (21) zur Beeinflussung eines auf den Fahrantrieb (13) wirksamen Betriebsdruckes.Cleaning machine (1) for cleaning ballast (5) of a track (3), with rail carriages (2) which can be acted upon by a travel drive (13) and a screening plant (9) which can be set in vibration by a vibration drive (10), and with a hydraulic system ( 16) for acting on the travel and vibration drive (13, 10), characterized by a control device (17) with a pressure sensor (18) detecting an operating pressure of the vibration drive (10) and an actuator (21) for influencing a drive drive (13 ) effective operating pressure.
    EP01890241A 2000-09-25 2001-08-22 Ballast cleaning machine and method Expired - Lifetime EP1191147B1 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    AT01890241T ATE292712T1 (en) 2000-09-25 2001-08-22 METHOD AND MACHINE FOR CLEANING GRAVEL OF A TRACK

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    AT7052000U 2000-09-25
    AT0070500U AT4016U3 (en) 2000-09-25 2000-09-25 METHOD AND MACHINE FOR CLEANING GRADES OF A TRACK

    Publications (2)

    Publication Number Publication Date
    EP1191147A1 true EP1191147A1 (en) 2002-03-27
    EP1191147B1 EP1191147B1 (en) 2005-04-06

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01890241A Expired - Lifetime EP1191147B1 (en) 2000-09-25 2001-08-22 Ballast cleaning machine and method

    Country Status (4)

    Country Link
    EP (1) EP1191147B1 (en)
    AT (2) AT4016U3 (en)
    DE (1) DE50105816D1 (en)
    RU (1) RU2224836C2 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    NO20090302L (en) * 2006-08-25 2009-05-05 J Mueller Ag Maschineller Gelei Method and apparatus for renewal of a support layer

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    RU2255167C1 (en) * 2004-03-09 2005-06-27 Государственное образовательное учреждение высшего профессионального образования "Петербургский государственный университет путей сообщения Министерства путей сообщения Российской Федерации" Processing method for ballast contaminated with oil
    CN106743399A (en) * 2016-12-14 2017-05-31 武汉海德新能源投资有限公司 A kind of material automatic blanking device

    Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB1453457A (en) * 1973-01-19 1976-10-20 Matisa Materiel Ind Sa Railway track maintenance machines
    US4245703A (en) * 1977-12-29 1981-01-20 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile ballast cleaning machine
    AT375982B (en) 1982-12-29 1984-09-25 Plasser Bahnbaumasch Franz TRACKABLE CONVEYOR FOR SCHUETTGUT

    Family Cites Families (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    AT317965B (en) * 1969-12-18 1974-09-25 Plasser Bahnbaumasch Franz Machine for picking up, cleaning and reintroducing ballast ballast from railroad tracks
    AT374521B (en) * 1982-08-17 1984-05-10 Plasser Bahnbaumasch Franz SELF-DRIVING BALL BED CLEANING MACHINE WITH A VIBRATION SCREENER
    WO1992000147A1 (en) * 1990-06-29 1992-01-09 Shin Sumino Mobile plant

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB1453457A (en) * 1973-01-19 1976-10-20 Matisa Materiel Ind Sa Railway track maintenance machines
    US4245703A (en) * 1977-12-29 1981-01-20 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile ballast cleaning machine
    AT375982B (en) 1982-12-29 1984-09-25 Plasser Bahnbaumasch Franz TRACKABLE CONVEYOR FOR SCHUETTGUT

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    NO20090302L (en) * 2006-08-25 2009-05-05 J Mueller Ag Maschineller Gelei Method and apparatus for renewal of a support layer
    US7861439B2 (en) 2006-08-25 2011-01-04 J. Muller Ag, Maschineller Geleiseunterhalt Method and device for renewing a ballast bed
    NO341498B1 (en) * 2006-08-25 2017-11-27 Sersa Maschineller Gleisbau Ag Method and apparatus for renewal of a support layer

    Also Published As

    Publication number Publication date
    DE50105816D1 (en) 2005-05-12
    EP1191147B1 (en) 2005-04-06
    RU2224836C2 (en) 2004-02-27
    AT4016U2 (en) 2000-12-27
    AT4016U3 (en) 2001-11-26
    ATE292712T1 (en) 2005-04-15

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