US3719150A - Mobile track tamper - Google Patents

Mobile track tamper Download PDF

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Publication number
US3719150A
US3719150A US00096678A US3719150DA US3719150A US 3719150 A US3719150 A US 3719150A US 00096678 A US00096678 A US 00096678A US 3719150D A US3719150D A US 3719150DA US 3719150 A US3719150 A US 3719150A
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United States
Prior art keywords
tamper
tamping
track
tools
groups
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Expired - Lifetime
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US00096678A
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English (en)
Inventor
J Theurer
E Benda
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
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Application filed by Franz Plasser Bahnbaumaschinen Industrie GmbH filed Critical Franz Plasser Bahnbaumaschinen Industrie GmbH
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Publication of US3719150A publication Critical patent/US3719150A/en
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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

Definitions

  • a mobile track tamper comprises a tamper unit associated with each rail.
  • Each tamper unit includes two groups of vibratory and vertically adjustable surface tamping tools, the distance between the two groups of tools of each unit being variable.
  • the tamping tools of each group are arranged to tamp the ballast in adjacent cribs simultaneously.
  • the present invention relates to improvements in mobile track tampers. More particularly, this invention relates to the type of track tamper comprising a frame mounted for mobility on a track having two rails afiixed to ties at their respective points of intersection, the ties resting on ballast and adjacent ties defining cribs therebetween.
  • a tamper unit is mounted on the frame and associated with each rail, and each tamper unit includes two groups of vibratory and vertically adjustable surface tamping tools, the tamping tools of each group being arranged to tamp the ballast in a respective one of adjacent cribs at both sides of the associated rail simultaneously whereby each tamper unit is adapted to tamp the ballast around the points of intersection between the rails and ties.
  • the vibratory tamping shoes, plates or rollers of the surface tamping tools used in machines of this general type are almost as wide as the cribs so as to tamp the largest possible area of ballast and thus to increase the efliciency and uniformity of the tamping operation.
  • This frequently causes difficulties in properly aligning the tamping tool with the crib to stay clear of an adjacent tie, particularly in cases where the tie is not perpendicular to the rails.
  • This difiiculty is considerably increased where two groups of such tamping tools form a single tamper unit for simultaneously tamping two adjacent cribs at both sides of an associated rail.
  • one of the tamping tool groups is stationarily mounted on the tamper frame while the other group of tamping tools is mounted on the frame for adjustable movement in the direction of track elongation.
  • the adjustabl movably mounted group of tamping tools is preferably the forward group of the tools in the working direction of the mobile track tamper. It is particularly useful for the other group of tamping tools of each tamper to be adjustably movable 3,719,150 Patented Mar. 6, 1973 in the direction of track elongation independently of each other.
  • the structure With one stationary tamping tool group, the structure retains a relative simplicity while still being adapted for operation under varying track conditions, the independent variation of the positions of the movable tamping tool groups of each tamper unit making it possible to align the tamping tools properly with adjacent cribs of various spacing and/or with obliquely extending ties for simultaneous tamping of such adjacent cribs.
  • the tamping tools which may be mounted on a support body, may be provided with adjustable, for instance hydraulic, drives for the adjustment of the tools, for instance in respect to the support body.
  • adjustable, for instance hydraulic, drives for the adjustment of the tools, for instance in respect to the support body.
  • controllable drives which may be combined with stop means for holding the tools in position, may be remote controlled to provide for ready and easy position adjustments where tie intervals are irregular and/or at double ties while the tamping operation continues along a track section.
  • FIG. 1 is a side view of a mobile track tamper incorporating the features of the present invention
  • FIG. 2 is a partial schematic top view of the machine, illustrating particularly the tamper units thereof;
  • FIG. 3 is an enlarged cross sectional view along line III-III of FIG. 1;
  • FIG. 4 is a side view of a tamping tool, taken in the direction of arrow IV of FIG. 3.
  • the mobile track tamper is shown to comprise a frame I mounted for mobility, in a working direction indicated by arrow 6, on a track having two rails 5, 5' afiixed to ties 4 at their points of intersection.
  • the tamper frame runs on running gears 2 and 3.
  • the ties rest on ballast 7 and adjacent ties define cribs 8 and 8' therebetween.
  • Tamper units 11 and 11' are mounted on the frame and respectively associated with rails 5 and 5', each unit including four tamping tools 9 and 9', respectively, groups of two tamping tools in each tamper unit being arranged to tamp the ballast in a respective one of cribs 8 and '8' at both sides of the associated rail simultaneously.
  • each tamper unlt is adapted to tamp the ballast around the points of intersection of the ties and rails.
  • a hydraulic motor 10 is mounted on frame 1 and operatively connected to the tamping tools 9, 9 of both tamper units for vertically adjusting the tamping tools for engagement with the ballast.
  • each tamping tool comprises a support body 24 and the tamping tool proper, which in the illustrated embodiment is a vibratory surface tamping shoe 12 which is movably mounted on the support body in a manner to be described more fully hereinafter.
  • the two tamping tools of each group are vibrated by association with a cam shaft 14 rotated by motor 13.
  • the machine also carries vibratory surface tampers 15 laterally adjacent the tie ends and extending over the combined width of the two adjacent cribs 8, 8' so that the ballast along the edges of the track may be tamped, too, to improve the efliciency of the operation and increase the quality of the tamping.
  • the operating stand 16 on the machine frame has a control panel 17 enabling an operator to control the entire operation in a manner to be described hereinafter.
  • the support bodies of the tamping shoes of each group of two tamping tools are fixedly mounted on a yoke 21 extending transversely of the track in a plane vertical thereto, the cam shaft 14 extending through a bore in the yoke and vibrating the same (and the tamping tools) upon rotation of the cam shaft by motor 13.
  • a common cam shaft supports both groups of tamping tools of each tamper unit for simultaneous vibration, the shaft 14 being pivotal about a horizontal axis intermediate the two yokes 21, 21 so that the two groups of tamping tools of each tamper unit may swing about this axis, the cam shaft 14 mounting the tamping tools of the two groups like the beam of a scale.
  • Such a mounting has the advantage that, upon lowering of the tamper units 11 and 11, the individual tamping shoes of the tools independently and immediately con tact the ballast in conformity to the ballast surface configuration and without subjecting any of the individual tools to undue contact pressure. Furthermore, this pendulum arrangement of the tamping tools makes the yokes 21 guides for the tamping direction.
  • tamping shoes may be replaced by vibratory tamping plates or rollers, as commonly used in surface tampers for ballast treatment.
  • the four tamping tools of the two groups of tools of tamper units 11 and 11', which tamp the ballast in crib 8', are mounted on frame 1 for adjustable movement in the direction of track elongation, as indicated by arrow 22 in FIG. 1, so that the distance between these groups of tamping tools and the tamping tools in alignment with rearward crib 8 may be varied.
  • this adjustment is accomplished by mounting the tamping shoe 12 of each tool on support body 24, the support body including a guide 25 extending in the direction of track elongation and slidably supporting the shoe 12.
  • a hydraulic motor 23 is connected to the tamping shoe 12 for moving the same along the guide 25, both chambers of the hydraulic cylinder being preferably connected to a hydraulic pressure fluid source for supply of hydraulic fluid to either chamber for moving the tamping shoe in a selected direction 27 or 28.
  • Stop means such as a series of bores 26 in the guide cooperating with set screws 29, are provided to fix the tamping shoe in a se lected position.
  • Pressure fluid may be supplied to the drive 23 of each individual tool independently so that a great variety of individual adjustments of the various tools is possible for adaptation to various tie spacings. While the tie spacing shown in the drawing is uniform, in actual track maintenance work this spacing is usually found to be highly irregular, particularly after the-track has been subject to heavy traflic which often causes displacement of ties. Furthermore, the width of the ties themselves often differs, and even the normal crib width may vary from track section to track section so that the basic position of the tamping shoe 12 may be accordingly adjusted by means of set screws 29 being engaged in different bores 26 of the guide 25
  • control panel 17 which includes means for controlling the hydraulic fluid supply to the motor.
  • a track sensor 18, an odometer 19 and an indicator 20 are used on the following manner:
  • the illustrated track sensor includes a signal emitter 31 arranged on the machine frame for contacting a designed track element, i.e. the track spikes orfastening bolts 30.
  • the signal emitter 31 is a conventional device which produces a limited magnetic field which is disturbed upon contact with the iron track element to emit a pulse which is transmitted to indicating and signaling device 20, the control circuits connecting the signal emitter 31 and the control panel 17, as well as the control panel and the indicator 20 being shown in broken lines in FIG. 1.
  • the track sensor is fixedly mounted on frame 1v to retain a fixed distance from tamper units 11 and 11'.
  • vAn odometer 19 is also fixedly mounted on the machine frame and includes a track rail engaging wheel 32 which measures the distance traveled by the machine in measurable units, such as centimeters, a measured unit of 100 centimeters being indicated in FIG. 1.
  • the measured units produce pulses which the odometer transmits to indicator 20.
  • the measured unit (for instance 100 centimeters is adjustable to a desired value corresponding to the distance traveled between the first contact of signal emitter 31 with spike or bolt 30 and the point when the tamper units 11, 11' are properly centered in adjacent cribs 8, 8'.
  • the signals emitted by odometer 19 are visually shown in numbers (of centimeters) on scale '33 of the indicator 20.
  • the distance traveled by the signal emitter 31, i.e. 100 cm., is signaled to the indicator 20 by the odometer, i.e. when the scale 33 shows the number 100, the tamper units are properly centered in the adjacent cribs. Since the intermittent advance of the tamper during the tamping operation always corresponds to the width of two cribs (which are simultaneously tamped during each tamping stage), the control circuits are so arranged that only each alternate contact of the signal emitter 31 with spike or bolt 30 is transmitted to indicator 20.
  • the operator of such an automated machine may additionally adjust the position of individual tamping tools 9 in crib 8' by operating the hydraulic drive 23 from control panel 17, the control circuit from the panel to the hydraulic fluid supply source for the drive being shown in broken lines in FIG. 1.
  • this fine adjustment may be automated by providing additional track sensors and odometers for engagement with each rail so that their signals may automatically control the fluid supply for fine adjustment of individual tools.
  • a mobile track tamper comprising a frame mounted for mobility on a track having two rails affixed to ties at their respective points of intersection, the ties resting on ballast and adjacent ones of the ties defining cribs there between, and a tamper unit mounted on the frame and associated with each of said rails, each of the tamper units including two groups of vibratory surface tamping tools vertically adjustable into engagement with the'sur face of the ballast for tamping the same, one of the tamping tool groups being stationarily mounted on the frame while the other group of tamping tools is mounted for adjustable movement in the direction of track elongation, the tamping tools of each of said groups being arranged to tamp the surface of the ballast in a respective one of adjacent cribs at both sides of the associated rail simultaneously whereby each of said tamper units is adapted to tamp the ballast in the adjacent cribs around said points of intersection, and meansfor varying the distance between the two groups of tamping tools of
  • each tamper unit comprises two yokes extending transversely of the track in a plane vertical thereto, the tamping tools of other group being mounted on a respective one of said yokes for guided movement in respect of the .one group, and a common drive for vibrating the'yokes and the tamping tools mounted thereon.
  • the mobile track tamper of claim 2 wherein the common drive comprises a cam shaft extending through bores in the yokes, and a drive for rotating the cam shaft for vibrating the yokes.
  • the mobile track tamper of claim 8 further comprising a guide rail for the movable group of tamping tools and adjustable stop means for holding the other group of tamping tools in an adjusted position.
  • the mobile track tamper of claim 10 further comprising a support body for the tamping tools, the adjustable drive adjustably moving the tamping tools in respect of the support body.
  • a mobile track tamper comprising a frame mounted for mobility on a track having two rails afiixed to ties at their respective points of intersection, the ties resting on ballast and adjacent ones of the ties defining cribs therebetween, and a tamper unit mounted on the frame and associated with each of said rails, each of the tamper units including two groups of vibratory surface tamping tools vertically adjustable into engagement with the surface of the ballast for tamping the same, one of the tamping tool groups being stationarily mounted on the frame while the other group of tamping tools is mounted for adjustable movement in the direction of track elongation, the tamping tools of each of said groups being arranged to tamp the surface of the ballast in a respective one of adjacent cribs at both sides of the associated rail simultaneously whereby each of said tamper units is adapted to tamp the ballast in the adjacent cribs around said points of intersection, and a controllable drive for adjustably moving the other group of t

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
US00096678A 1969-12-19 1970-12-10 Mobile track tamper Expired - Lifetime US3719150A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1190869A AT311406B (de) 1969-12-19 1969-12-19 Fahrbare Maschine zum Verdichten der Schotterbettung eines Gleises

Publications (1)

Publication Number Publication Date
US3719150A true US3719150A (en) 1973-03-06

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US00096678A Expired - Lifetime US3719150A (en) 1969-12-19 1970-12-10 Mobile track tamper

Country Status (12)

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US (1) US3719150A (ro)
JP (1) JPS5517162B1 (ro)
AT (1) AT311406B (ro)
CA (1) CA951966A (ro)
CH (1) CH532690A (ro)
DE (1) DE2056304C3 (ro)
FR (1) FR2072852A5 (ro)
GB (1) GB1347012A (ro)
HU (1) HU170612B (ro)
RO (1) RO64617A (ro)
SE (1) SE368433B (ro)
ZA (1) ZA708361B (ro)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807311A (en) * 1971-07-14 1974-04-30 Plasser Bahnbaumasch Franz Mobile track tamping and leveling machine
US3913490A (en) * 1973-12-17 1975-10-21 Plasser Bahnbaumasch Franz Crib tamping machine
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT346890B (de) * 1975-06-24 1978-11-27 Plasser Bahnbaumasch Franz Gleisverdicht- bzw. stopfmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807311A (en) * 1971-07-14 1974-04-30 Plasser Bahnbaumasch Franz Mobile track tamping and leveling machine
US3913490A (en) * 1973-12-17 1975-10-21 Plasser Bahnbaumasch Franz Crib tamping machine
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

Also Published As

Publication number Publication date
ZA708361B (en) 1971-09-29
HU170612B (ro) 1977-07-28
RO64617A (fr) 1979-01-15
CH532690A (de) 1973-01-15
DE2056304C3 (de) 1978-11-16
AT311406B (de) 1973-11-12
FR2072852A5 (ro) 1971-09-24
JPS5517162B1 (ro) 1980-05-09
CA951966A (en) 1974-07-30
GB1347012A (en) 1974-02-13
SE368433B (ro) 1974-07-01
DE2056304B2 (de) 1978-03-30
DE2056304A1 (de) 1971-07-15

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