US3595170A - Mobile track tamper - Google Patents

Mobile track tamper Download PDF

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Publication number
US3595170A
US3595170A US784639A US3595170DA US3595170A US 3595170 A US3595170 A US 3595170A US 784639 A US784639 A US 784639A US 3595170D A US3595170D A US 3595170DA US 3595170 A US3595170 A US 3595170A
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United States
Prior art keywords
track
tamper
tamping
tools
tamping tool
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Expired - Lifetime
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US784639A
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English (en)
Inventor
Franz Plasser
Josef Theurer
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Franz Plasser Bahnbaumaschinen Industrie GmbH
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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
    • 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
    • E01B2203/00—Devices for working the railway-superstructure
    • E01B2203/10—Track-lifting or-lining devices or methods
    • 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
    • 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
    • E01B2203/16—Guiding or measuring means, e.g. for alignment, canting, stepwise propagation

Definitions

  • a mobile track tamper with a plurality of twin tamping tool assemblies has means for controlling the movement of the assemblies in the track direction in response to the location of a tie to be positioned between the opposed tamping tools of each assembly.
  • the present invention relates to mobile track tampers wherein a plurality of twin" tamping tool assemblies are mounted on an elongated frame for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast.
  • Twin tamping tool assemblies have recently become known and are described and claimed in out U.S. Pat. Nos. 3,372,651 and 3,357,366.
  • Each such assembly includes'two pairs of opposed tamping'tools.
  • the pairs of tools are so spaced'from each other in the direction of elongation of the track that the tools of each pair which are adjacent to each other are at a smaller distance from each other than the distance between adjacent ones of the ties.
  • the opposed tools of each pair are arranged for immersion in the ballast adjacent one of the ties and for-reciprocation in this direction, with the one tie positioned between the opposed tools of each pair.
  • the means for controlling the movement of the tamping tool assemblies may include a tactile element in contact with the track, preferably a selected tie, or a visible control arranged to view the location of the one tie, such as a television screen.
  • FIG. 1 is a schematic side view of one embodiment of a mobile tamper according to the invention
  • FIG. 3 schematically illustrates the controlled movement of one of the tamping tool assemblies
  • FIG. 4 is a side view similar to that of FIG. 1 of another embodiment of the tamper
  • FIG. is a top view of FIG. 4.
  • FIG. 6 is a schematic illustration similar to FIG. 3 of the operation of the second embodiment.
  • the illustrated tampers may be used for grading and/or lining a track and for fixing the graded track in the corrected position by tamping.
  • the mobile tamper comprises an elongated frame I which is mounted for mobility on the track on two swivel running gears 2, 3.
  • the tamper moves on a track including rails 4 supported on a plurality of spaced ties 5 resting on a ballast underneath the ties.
  • the rear running gear 2 of the tamper moves on a previously corrected track section; the track section being corrected is fixed in position by tamping, and a track section to be corrected extends forwardly, as indicated by the heavy line indicating the irregular grade of this track section.
  • the frame 1 has the form of a bridge extending over the track section being tamped, and a carrier 6 for the tamping tool assemblies 9 and 10 is supported on the frame.
  • the operators stand I is also mounted on the frame, as are the motor means 1" for operating all moving parts of the tamper in a conventional manner.
  • twin tamping tool assemblies are mounted-on the carrier for vertical movement so that the v tamping tools 12 may be immersed in the ballast so that the opposed tools of eachassembly will'simultaneously tamp two adjacent ties.
  • the tamping tool assemblies are mounted on a support beam 11 of frame'l for movement in the direction of elongation of the track.
  • the carrier 6 may be pivoted about a fulcrum extending perpendicularly to the track plane and parallel thereto.
  • This fulcrum is constituted by pivot pin 7. connecting the carrier 6 to frame 1 above running gear 2.
  • the carrier is connected to a hydraulic motor 8 arranged to move the carrier transversely of the track about pin 7.
  • the position of the tamping tools in respect of the ties to be tamped is adjustable in the direction of track elongation as well as transversely thereto.
  • the tamping tool position may be adjusted to the tie position, two successive operating stages of the two tamping tool assemblies being shown in FIG. 3.
  • the long arrow in FIG. 3 indicates the working direction of the tamper.
  • the relative spacing of tamping tool assemblies 9 and 10 places the opposed tools of each assembly alongside the ties 5 to be tamped.
  • the tamper includes a tactile element 13 associated with tamping tool assembly 9 and in contact with the track to prove the position of a tie 5 or another track component. As shown by a broken line, the tactile element 13 is connected to the operators stand 1' so that the tamping tool assembly may be moved in the direction of elongation of the track in response to the probing of the tactile element.
  • Systems for controlling the movement of tamper parts in response to the probing of tactile elements in contact with the track are well known, as exemplified, for instance, in our US. Pat. Nos. 2,976,816 and 3,l27,848.
  • the movement of the other tamping tool assembly may then be controlled in response to the movement of the one assembly.
  • a tactile element or other control element may be associated with each tamping tool assembly for control of its movement in the direction of track elongation.
  • the tamper illustrated in the drawing comprises a means 14 for lifting the track, which is mounted forwardly of the foremost tamping tool assembly in the working direction of the tamper.
  • the illustrated track lifting means comprises pairs of flanged rollers which glidingly grip the track rails and which may be lifted by a hydraulic motor, such as fully described and claimed in out U.S. Pat. No. 3,38l,6l5. Any other suitable track lifting means may be used, however, including such means associated with each tamping tool assembly. lt is, of course, possible to effect lifting of the track by vertically movable track grippers and then to grade finely by additionally moving the track up to the desired grade by tamping.
  • a track shoe 15 is mounted on frame 1.
  • This track shoe is arranged for contact with, and to exert a downward pressure on, the track.
  • the illustrated track shoe is arranged adjacent each tamping tool assembly, i.e. therebetween, and consists of pairs of flanged rollers engaging the track rails and being pressed down on the rails by a hydraulic motor mounted on the support beam 11.
  • the distance of the track shoe from the frame is adjustable and the distance of any upward movement of the track is determined by the adjusted distance of the track show from the support beam.
  • Track position correcting means on the tamper may also include lateral track shifting means so that the tamper may operate not only for grading but also for lining the track. This may be accomplished very simply by making the track lifting means also laterally movable. Thus, the track rail gripping rollers will move the track laterally when they are so moved.
  • the track shoe 15 may also be laterally movable to constitute additional lateral track shifting means, coarse lining being effected by means 14, for instance, while fine lining is effected by track shoe 15. These track shifting positions are indicated in FIG. 2 by pairs of double arrows.
  • the gripping rollers of track shoe 15 may be used as means movable in relation to, but engaging, the track to hold the track in a fixed position between the running gears 2 and 3.
  • the rollers will hold the track in position against vertical and/or lateral movement.
  • lateral track shifting means may be individually operated, a lateral movement of the carrier 6, on which the track engaging means are mounted, will laterally move these means in respect of frame 1 to effect lining, as proposed in the embodiment of FIGS. 1 and 2.
  • the reference system includes a reference wire 16 extending from a front bogie 17 on the ungraded track section to a rear station 18 supported on the corrected track section in the range of the rear running gear 2 of the tamper.
  • the height of the wire and anchor at station 18 may be adjusted.
  • An intermediate bogie 19 is coupled respectively to the tamper and to the front bogie 17 by rods 20, 21, being positioned closer to the tamping station than the front bogie.
  • the intermediate bogie serves to control the position of reference line 16 if and when the front bogie 17 happens to be located at a false" high point, i.e. if it rests on a track point which is lower than the track point on which the intermediate bogie rests. In this case, the intermediate bogie will support the reference line and will become the front station of the reference system.
  • the spacing between the intermediate and front bogies 17 and 19 is preferably the same as that between the tamping tool assemblies 9 and I0.
  • the reference system also includes a track position indicating element 22 and 23 associated with each tamping tool assembly for cooperation with the reference wire 16.
  • Each indicating element has a spotboard whose edge is arranged to contact the reference wire, the spotboard being supported on the track rail and being raised therewith.
  • the carrier 6 has been mounted on frame 1 by means of transverse beams 6', hydraulic motors 8' and 8" enabling the carrier to be shifted laterally in respect of the track.
  • the means for controlling the movement of the tamping tool assemblies 9, 10 includes a visible control.
  • the illustrated control consists of a television camera 24 associated with each tamping tool assembly to view the ties to be positioned between the opposed tools of the adjacent pairs of tools, and television screens 24', 24' at the operator's stand 1 to enable the operator to view the tie positions and to move the tamping tool assemblies accordingly to center the assemblies properly in relation to the ties, as illustrated in FIG. 6, which shows the particularly usefulness of the invention with obliquely positioned ties.
  • the reference system illustrated in conjunction with this embodiment is that more fully described and claimed in our U.S. Pat. No. 3,334,593.
  • two overlapping reference lines 25 and 29 are constituted by sight lines or bundles of radiation, such as light rays.
  • the light beam 25 is projected from sender 26 to receiver 27 at the rear station of the system.
  • the end point 26 of beam 25 is adjusted in relation to the reference beam 29 which is a sight line extending from a sighting instrument 31, such as a telescope, to the spotboard 30 of the track position indicating element 23 and passing through a transparent marker on spotboard 28 attached to sender 26. Since the reference line 29 is very long, advance of the tamper over four track ties will produce no substantial changes in the vertical position of sender 26 so that accurate grading will be assured.
  • the tamper of this embodiment may be operated selectively in either direction along the direction of track elongation without being turned around, having a track position correcting means 14 mounted on the other side of the center point of the tamper. As shown, in fact, each essential operating component of the tamper is duplicated on each side of the center point.
  • any suitable reference system for lining purposes may be installed. Since such systems are well known and a showing thereof would have made the drawing too crowded, it has been omitted.
  • a mobile track tamper for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast, said tamper comprising 1. a plurality of tamping tool assemblies mounted in spaced relation in the direction of elongation of the track,
  • At least one of the tamping tool assemblies being movable in said direction in relation to the tamper whereon it is mounted for tamping a selected one of said ties by the movable tamping tool assembly;
  • the mobile track'tamper of claim l wherein the track position correcting means includes a means for lifting the a track, said track lifting means being mounted on the tamper forwardly of the foremost tamping tool assembly.
  • the lateral track shifting means comprises a carrier, track engaging means mounted on the carrier, and means for mounting the carrier on the framefor lateral movement in respect of the frame.
  • each assemblyjn cludes twopairs of opposed tamping tools, said pairs of tools being so spaced from each other in said direction that Y the tools of each pair which are adjacent to each other are at a smaller distance from each other than the distance between adjacent" ones of said ties, the opposed tools of each pair being arranged for immersion in the ballast adjacent one of said ties and forreciprocation in said direction, with the one tie positioned between the opposed tools of each pair.
  • each of the tamping tool assemblies is independently movable in said direction, and the means for controllingthe movement of the movable tamping tool assembly in response to the location of the selected tie controls the movement of a first one of the assemblies, the movement of successive ones of said assemblies being controlled-in response to the movement of the first assembly.
  • each of the tamping tool assemblies is independently movable in said direction, and the means for controlling the tamping tool assembly movement includes a tactile element associated with each assembly and in contact with the track.
  • a mobile track tamper for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast, said tamper comprising 2. an elongated frame;
  • each tamping tool assembly being 'movable independently in said direction for tamping a selected one of said ties;
  • a track shoe mounted on said frame and arranged for contact with, and to exert a downward pressure on, the track, the track shoe being arranged adjacent each tamping tool assembly for limiting any upward movement of the track to a predetermined distance;
  • a mobile track tamper for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast, said tamper comprising I. an elongated frame;
  • each assembly including a. two pairs of opposed tamping tools, said pairs of tools being so spaced from each other in said direction that the tools of each pair which are adjacent to each other are at a smaller distance from each other than the distance between adjacent ones of said ties, the opposed tools of each pair being arranged for immersion in the ballast adjacent one of said ties and for reciprocation in said direction, with the. one tie positioned between the opposed'tools of each pair;
  • the track positioncorrectingmeans including a means for laterally shifting the track 5-.
  • two running gears mounting the frame for mobility on the c.
  • the tamping tool assemblies and thelateraltrack shifting means being mounted on the frame between the running'gears; and
  • Y 6 a reference system for indicating the correct track position
  • a movable track tamper for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast, said tamper comprising 1. an elongated frame;
  • the reference system comprises a reference line, the reference line cooperating with the track position indicating element which indicates the highest position of the track in respect to the uncorrected track position for controlling the correction of the track.
  • a mobile track tamper for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast, said tamper comprising l an elongated frame;
  • each assembly including a. two pairs of opposed tamping tools,said pairs of tools being so spaced from each other-in said direction that the tools of each pair which are adjacent to each other are at a smaller distance from each other than the distance between adjacent ones of said ties, the opposed tools of each pair being arranged for immersion in the ballast adjacent one of said ties and for reciprocation in said direction, with the one tie positioned between the opposed tools ofeach pair;
  • the track position correcting means including a track shoe for laterally shifting the track, the track shoe being mounted on said frame and arranged for contact with, and to exert a downward pressure on, the track, the track shoe being laterally movable and arranged adjacent a tamping tool assembly for limiting any upward movement of the track to a predetermined distance; and
  • a mobile track tamper for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast, said tamper comprising 1. an elongated frame;
  • each assembly including a. two pairs of opposed tamping tools, said pairs of tools being so spaced from each other in said direction that the tools of each pair which are adjacent to each other are at a smaller distance from each other than the distance between adjacent ones of said ties, the opposed tools of each pair being arranged for immersion in the ballast adjacent one of said ties and for reciprocation in said direction, with the one tie positioned between the opposed tools of each pair;
  • said track engaging means being mounted between the running gears at a point it is desired to hold the track fixed against any correcting movement
  • a mobile track tamper for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast, said tamper comprising i. an elongated frame;
  • each assembly including a. two pairs of opposed tamping tools, said pairs of tools being so spaced from each other in said direction that the tools of each pair which are adjacent to each other are at a smaller distance from each other than the distance between adjacent ones of said ties, the opposed tools of each pair being arranged for immersion in the ballast adjacent one of said ties and for reciprocation in said direction, with the one tie positioned between the opposed tools of each pair;
  • the reference system including track position indicating elements associated with each of the track position correcting means whereby the track position may be corrected by the tamper operating in either direction along the direction ofelongation ofthe track.
  • a mobile track tamper for tamping ballast underneath a track including rails supported on a plurality of spaced ties resting on the ballast, said tamper comprising l. a plurality of tamping tool assemblies mounted in spaced relation in the direction of elongation of the track for movement in said direction in relation to the tamper whereon they are mounted,
  • each tamping tool assembly being movable independently in said direction for tamping a selected one of said ties;
  • said track position correcting means including b. a plurality of means for lifting the track, each track lifting means being mounted on the tamper forwardly of an associated one of said tamping tool assemblies;

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
US784639A 1968-01-02 1968-12-18 Mobile track tamper Expired - Lifetime US3595170A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT168A AT321347B (de) 1968-01-02 1968-01-02 Fahrbare Gleisstopfmaschine

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US3595170A true US3595170A (en) 1971-07-27

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US (1) US3595170A (de)
JP (1) JPS499841B1 (de)
AT (1) AT321347B (de)
CH (1) CH508099A (de)
DE (2) DE1816670B2 (de)
FR (1) FR1600366A (de)
GB (1) GB1263270A (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717100A (en) * 1970-05-16 1973-02-20 H Sieke Movable tamping machines for railroads
US3895583A (en) * 1973-05-25 1975-07-22 Plasser Bahnbaumasch Franz Method and apparatus for tamping and leveling track
US4094250A (en) * 1975-06-20 1978-06-13 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track tamping machine
US4094251A (en) * 1974-01-04 1978-06-13 Frank Plasser Bahnbaummaschinen-Industriegesellschaft M.B.H. Mobile track tamping machine
US4323013A (en) * 1978-11-30 1982-04-06 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track working machine
US4334479A (en) * 1973-04-26 1982-06-15 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Method and apparatus for obtaining a controlled degree of ballast compaction in the tamping and leveling of a truck
US4393784A (en) * 1977-05-06 1983-07-19 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Apparatus for replacing rail fastening elements and, optionally, rails
US4596193A (en) * 1982-09-09 1986-06-24 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track leveling, lining and tamping machine
US4627358A (en) * 1982-09-09 1986-12-09 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Continuous action track leveling, lining and tamping machine
US4627360A (en) * 1983-10-05 1986-12-09 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H Mobile track leveling, lining and tamping machine
US4628822A (en) * 1983-09-28 1986-12-16 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Continuously advancing track leveling, lining and tamping machine
US4630541A (en) * 1983-08-19 1986-12-23 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track leveling, lining and tamping machine
US4643101A (en) * 1982-11-23 1987-02-17 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track leveling, lining and tamping machine
US5617793A (en) * 1995-03-07 1997-04-08 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Method of tamping a plurality of ties simultaneously
US5619929A (en) * 1995-03-07 1997-04-15 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Track tamping machine, machine arrangement and method
US20040003750A1 (en) * 2002-07-04 2004-01-08 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H., Machine for tamping ties of a track
CN107419625A (zh) * 2017-06-24 2017-12-01 淄博洁翔机电科技开发有限公司 全自动数控液压道岔捣固车
US20180119363A1 (en) * 2015-05-07 2018-05-03 Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.B.H. Method for underfilling a switch point

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1502217A (fr) * 1965-11-20 1967-11-18 Stromberg & Co As Svein Boîtes en matière plastique pour la pêche
DE2034733C2 (de) * 1970-07-13 1983-07-21 Canron Inc., Toronto, Ontario Gleisstopfmaschine
AT339360B (de) * 1975-08-25 1977-10-10 Plasser Bahnbaumasch Franz Fahrbare gleisstopfmaschine zum unterstopfen der querschwellen eines gleises
CH628378A5 (en) * 1978-11-28 1982-02-26 Sig Schweiz Industrieges Movable machine for working on railway tracks
AT350098B (de) * 1977-03-17 1979-05-10 Plasser Bahnbaumasch Franz Gleisbaumaschine, insbesondere gleisverdicht- maschine fuer schmalspurgleise
AT351069B (de) * 1977-09-02 1979-07-10 Plasser Bahnbaumasch Franz Fahrbare einrichtung zum kontinuierlichen aus- wechseln bzw. erneuern eines aus schienen und schwellen bestehenden gleises
AT391903B (de) * 1989-01-26 1990-12-27 Plasser Bahnbaumasch Franz Fahrbare gleisbearbeitungsmaschine mit einer einrichtung zur steuerung der arbeits-position ihrer arbeits-aggregate bzw. -werkzeuge
DE4039058C2 (de) * 1990-12-07 1994-11-24 Peguform Werke Gmbh Transportbehälter, insbesondere Flaschenkasten aus Kunststoff
DE29520255U1 (de) * 1995-12-21 1996-03-28 Kunststoffwerke Adolf Hopf GmbH & Co, 86720 Nördlingen Behälter aus Kunststoff
AT411277B (de) 2001-08-09 2003-11-25 Plasser Bahnbaumasch Franz Maschine und verfahren zum erkennen der schwellenlage eines gleises
AT522455B1 (de) * 2019-05-23 2020-11-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Gleisbaumaschine und Verfahren zum Stopfen eines Gleises
AT17282U1 (de) * 2020-05-19 2021-11-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh System und Verfahren zum Bearbeiten eines Gleises mit einer Gleisbaumaschine

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US3177813A (en) * 1960-09-09 1965-04-13 Stewart John Kenneth Railroad maintenance device
US3274951A (en) * 1964-06-10 1966-09-27 Mannix Internat Inc Railroad track gripping apparatus
US3343497A (en) * 1965-07-28 1967-09-26 Canada Iron Foundries Ltd Railway track tamping apparatus
US3380395A (en) * 1964-11-30 1968-04-30 Plasser Bahnbaumasch Franz Apparatus for tamping ballast
US3401642A (en) * 1966-11-04 1968-09-17 Earl H. Fisher Automatic jacking, levelling and lining railroad track tampers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177813A (en) * 1960-09-09 1965-04-13 Stewart John Kenneth Railroad maintenance device
US3274951A (en) * 1964-06-10 1966-09-27 Mannix Internat Inc Railroad track gripping apparatus
US3380395A (en) * 1964-11-30 1968-04-30 Plasser Bahnbaumasch Franz Apparatus for tamping ballast
US3343497A (en) * 1965-07-28 1967-09-26 Canada Iron Foundries Ltd Railway track tamping apparatus
US3401642A (en) * 1966-11-04 1968-09-17 Earl H. Fisher Automatic jacking, levelling and lining railroad track tampers

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717100A (en) * 1970-05-16 1973-02-20 H Sieke Movable tamping machines for railroads
US4334479A (en) * 1973-04-26 1982-06-15 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Method and apparatus for obtaining a controlled degree of ballast compaction in the tamping and leveling of a truck
US3895583A (en) * 1973-05-25 1975-07-22 Plasser Bahnbaumasch Franz Method and apparatus for tamping and leveling track
US4094251A (en) * 1974-01-04 1978-06-13 Frank Plasser Bahnbaummaschinen-Industriegesellschaft M.B.H. Mobile track tamping machine
US4094250A (en) * 1975-06-20 1978-06-13 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track tamping machine
US4393784A (en) * 1977-05-06 1983-07-19 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Apparatus for replacing rail fastening elements and, optionally, rails
US4323013A (en) * 1978-11-30 1982-04-06 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track working machine
US4596193A (en) * 1982-09-09 1986-06-24 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track leveling, lining and tamping machine
US4627358A (en) * 1982-09-09 1986-12-09 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Continuous action track leveling, lining and tamping machine
US4646645A (en) * 1982-09-09 1987-03-03 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track leveling, lining and tamping machine
US4643101A (en) * 1982-11-23 1987-02-17 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track leveling, lining and tamping machine
US4630541A (en) * 1983-08-19 1986-12-23 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Mobile track leveling, lining and tamping machine
US4628822A (en) * 1983-09-28 1986-12-16 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Continuously advancing track leveling, lining and tamping machine
US4627360A (en) * 1983-10-05 1986-12-09 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H Mobile track leveling, lining and tamping machine
US5617793A (en) * 1995-03-07 1997-04-08 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Method of tamping a plurality of ties simultaneously
US5619929A (en) * 1995-03-07 1997-04-15 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Track tamping machine, machine arrangement and method
AU702621B2 (en) * 1995-03-07 1999-02-25 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. A tamping machine, a machine arrangement and a method for tamping a track
US20040003750A1 (en) * 2002-07-04 2004-01-08 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H., Machine for tamping ties of a track
US6705232B2 (en) * 2002-07-04 2004-03-16 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Machine for tamping ties of a track
US20180119363A1 (en) * 2015-05-07 2018-05-03 Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.B.H. Method for underfilling a switch point
US10619312B2 (en) * 2015-05-07 2020-04-14 Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.B.H. Method for underfilling a switch point
CN107419625A (zh) * 2017-06-24 2017-12-01 淄博洁翔机电科技开发有限公司 全自动数控液压道岔捣固车
CN107419625B (zh) * 2017-06-24 2023-05-23 淄博洁翔机电科技开发有限公司 全自动数控液压道岔捣固车

Also Published As

Publication number Publication date
DE1817894C3 (de) 1978-11-09
JPS499841B1 (de) 1974-03-07
DE1816670B2 (de) 1976-02-12
GB1263270A (en) 1972-02-09
DE1817894A1 (de) 1973-05-24
FR1600366A (de) 1970-07-20
CH508099A (de) 1971-05-31
DE1816670A1 (de) 1969-07-31
DE1817894B2 (de) 1978-03-23
AT321347B (de) 1975-03-25

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