US3479965A - Ballast tamping tool for mobile tamper - Google Patents

Ballast tamping tool for mobile tamper Download PDF

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Publication number
US3479965A
US3479965A US744602*A US3479965DA US3479965A US 3479965 A US3479965 A US 3479965A US 3479965D A US3479965D A US 3479965DA US 3479965 A US3479965 A US 3479965A
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US
United States
Prior art keywords
tamping
ballast
plate
tools
tool
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Expired - Lifetime
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US744602*A
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English (en)
Inventor
Franz Plasser
Josef Theurer
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Franz Plasser Bahnbaumaschinen Industrie GmbH
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Individual
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Publication date
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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

Definitions

  • the present invention relates to improvements in tamping tools used for tamping the ballast of a railroad bed, which comprise a shaft and a ballast tamping plate fixed to the lower end of the shaft.
  • Such tamping tools are used in the well known mobile tempers, such as disclosed in our US. Patent No. 2,876,- 709, for example, wherein the shaft serves to impart to the tamping tools a reciprocating motion and the tamping plates exert a pressure on an area of the ballast to be tamped when pairs of cooperating tamping tools are moved together.
  • ballast rocks tend to escape laterally as tamping pressure is exerted thereon in a plane parallel to the track, thus reducing the tamping effect.
  • a tamping tool which comprises a shaft having a lower end, and a ballast tamping plate fixed to the lower shaft end.
  • the tamping plate is relatively thin and its cross section in a plane perpendicular to the shaft is substantially uniform throughout at least most of its length and sinuous, thus defining concavities conforming to the average surface curving of the ballast rocks.
  • Such a plate readily penetrates through the ballast between the ballast rocks, with a minimum displacement of rocks during vertical movement of the tamping tool, thus reducing the required penetrating power of the tamping tool as well as the disturbance of the tamped ballast during withdrawal of the tool to a minimum.
  • the tamping tool shafts are mounted on a mobile track tamper for vertical movement through the ballast and for movement in a plane parallel to the track.
  • ballast penetration is further enhanced by tapering the shaft and the tamping plate toward the lower edge of the plate.
  • This tapering may be in respect of the thickness of the shaft and plate, and/or in respect of the width of the plate whereby the lower edge of the plate is shorter than the upper edge, thus imparting the shape of a pick to the tamping tool.
  • Such a tapered lower tamping plate edge will be like a toothed cuttingedge penetrating the ballast and greatly facilitating movement therethrough.
  • FIG. 1 is a front view of a tamping tool according to the invention
  • FIG. 2 is a side view of the tamping tool
  • FIG. 3 is a section along line IIIIII of FIG. 1;
  • FIG. 4 is a top view schematically showing the arrangement of groups of such tamping tools alongside two track ties;
  • FIGS. 5 and 6 are top views illustrating the penetration of tamping tools between the rocks ofthe ballast
  • FIG. 7 is a fragmentary side view of a mobile track tamper carrying tamping tools with plates shapedaccording to the invention.
  • FIG. 8 is a view similar to that of a modified tamping tool.
  • FIGS. 1 to 3 there is shown a tamping tool shaft 2 having a relatively thin ballast tamping plate 1 fixed to its lower end.
  • the cross section of the tamping plate in a plane perpendicular to the shaft is substantially uniform and sinuous so that the plate has a concavity to which the tamping tool shaft 2 is fixed.
  • the plate has a pair of convex curves adjacent the shaft on the plate surface to which the shaft is fixed, and two lateral edges projecting in a direction opposite to the shaft.
  • the projecting plate edges make it possible to encompass a larger area of the ballast and thus to compact the bed with greater efliciency because the projecting edges will prevent a lateral displacement of the ballast away from the tamping plates while the same are moved together during the tamping operation.
  • the plate may be wider and have more than two convex sections facing the shaft.
  • FIG. 2 shows the shaft and the tamping plate tapering in thickness toward the lower edge of the plate.
  • the lower edge will be a toothed cutting edge.
  • FIG. 8 shows a tamping plate 1a which tapers from a wider upper edge to a narrower lower edge in the direction of the length of the plate, thus imparting the shape of a pick or spade to the tamping tool plate.
  • FIGS. and 6 tamping the approximate shape shown in FIG. 3 being particularly useful for ballast with relatively large rocks 6 While the plate 1 is better adapted for ballast with relatively small rocks 6'.
  • FIG. 4 illustrates an arrangement of two groups of two pairs 3, 3' and 4, 4' of tamping tools which are immersed in the ballast, with the adjacent ties 5 and 5' positioned intermediate the pairs of a respective one of the groups. Tamping is accomplished in the conventional manner by moving the tools of each pair together toward the intermediate tie, with the adjacent tamping tools 3' 4 of the pairs of tools immersed in the same ballast space between ties 5, 5'.
  • Tamping is accomplished in the conventional manner by moving the tools of each pair together toward the intermediate tie, with the adjacent tamping tools 3' 4 of the pairs of tools immersed in the same ballast space between ties 5, 5'.
  • FIG. 7 illustrates a mobile track tamper of the type disclosed and claimed in our Patent No. 3,372,651. It includes a tamping tool carrier 26 slidably supported on posts 27, 27 mounted in carriage frame 28 so that the tamping tools may be vertically moved in respect of ballast 25.
  • Cam shaft 14 is supported on carrier 26, the shaft axis being parallel to ties 5, 5' supporting the rails 13 of the track upon which the carriage of the tamper travels.
  • shaft 14 imparts a vibratory motion to tamping tool mounting arms 15, 15 so that the tamping tools are vibrated during tamping.
  • the two pairs of tamping tools 11, 11 and 12, 12 are respectively pivotally connected at their upper ends 6 to the outer ends of mounting arms 15, 15. Intermediate their ends, each tamping tool is linked to a pivot 17, which enables the tamping tools to be reciprocated in a plane parallel to the track.
  • tamper is moved on rails 13 to the next adjacent pair the tamping tools have been immersed into the ballast of ties, and the operation is repeated.
  • the tamping tools are connected at pivots 17 to piston rods 18 which are reciprocable in the direction of the track.
  • Each rod carries piston 19 at its inner end, both pistons of each pair of tools gliding in common cylinder 20, 20 and thus dividing each cylinder into two outer chambers and a central chamber.
  • pistons 19 move towards each other and thus close the tamping plates to effect the tamping of the ballast rocks.
  • pressure fluid for instance compressed air
  • the pistons and the tamping tools are moved apart.
  • tamping tool plates of sinuous cross section may be so staggered in the direction of extension of the ties, i.e. transversely of the track, that a convex section of one tamping tool plate faces a concave section of an adjacent plate.
  • two adjacent tools may have the back sides of their tamping plates very close together when the tamping tools are moved apart to the maximum extent. This makes maximum use of the limited space between the ties.
  • the ballast area compacted by the tools may be increased considerably.
  • a mobile track tamper comprising a vibratory ballast tamping tool mounted for vertical movement into and out of the ballast and for movement in a plane parallel to the track in the ballast, the tamping tool having a shaft with a lower end and a relatively thin ballast tamping plate fixed to the lower shaft end and extending vertically to the ballast, a cross section of the plate in a plane perpendicular to the shaft being substantially uniform throughout at least most of its length, the improvement of the cross section being sinuous and the plate defining concavities along the length thereof which conform to the average surface curving of the ballast rocks.
  • the tamping tool plate tapers along its length from an upper to a lower edge, the lower edge of the plate being narrower than the upper edge.
  • the ballast tamping tool plate having sinuous curves alternating on opposite sides of a median plane extending laterally of the shaft and two lateral edges projecting on the same side of the. plane and opposite to the side of the plane to which the shaft is fixed.
  • a pair of said tamping tools said tools having pivot support remote from the lower ends, means is provided for reciprocating said shafts about the pivot supports towards and away from each other in a direction perpendicular to the plane of the plates, and said two lateral edges of the tamping tool plates of said pair of tools facing each other.
  • two pairs of said tamping tools said tools having pivot supports remote from the lower ends, means is provided for reciprocating the shafts of the tools of each pair about the pivot supports towards and away from each other in a direction perpendicular to the plane of the plates, and adjacent ones of the tools of each pair being mounted for immersion in an interspace between two adjacent ties of the track, the adjacent pairs of tamping tools being staggered in the direction of extension of the ties transversely of the track, the sinuous tamping tool plates consisting of alternating concave and convex surface portions, and a concave surface portion of the tamping tool plate of one of the adjacent tools facing a convex surface portion of the adjacent tool.
  • a tool for compacting the rocks of ballast comprising an elongated tool shaft, a ballast tamping plate lying against the lower end portion of said shaft and atfixed thereto with portions of said plate extending laterally from opposite sides thereof, the cross section of said plate in a plane perpendicular to said shaft having spaced convex portions and intermediate concave portions, the concave portions conforming to the average surface curving of the ballast rocks, and said lower end portion of said shaft lying within an intermediate concave portion.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
US744602*A 1965-09-02 1968-06-19 Ballast tamping tool for mobile tamper Expired - Lifetime US3479965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT806865A AT287768B (de) 1965-09-02 1965-09-02 Stopfwerkzeug zum Verdichten der Schotterbettung von Gleisen und fahrbare Gleisstopfmaschine mit solchen Stopfwerkzeugen

Publications (1)

Publication Number Publication Date
US3479965A true US3479965A (en) 1969-11-25

Family

ID=3602222

Family Applications (1)

Application Number Title Priority Date Filing Date
US744602*A Expired - Lifetime US3479965A (en) 1965-09-02 1968-06-19 Ballast tamping tool for mobile tamper

Country Status (6)

Country Link
US (1) US3479965A (OSRAM)
AT (1) AT287768B (OSRAM)
CH (1) CH475419A (OSRAM)
DE (2) DE6603787U (OSRAM)
GB (1) GB1130890A (OSRAM)
SE (1) SE322251B (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2308559C2 (ru) * 2005-12-12 2007-10-20 Анатолий Николаевич Шилкин Подбивочно-уплотнительный инструмент шпалоподбивочной машины
CN103306184A (zh) * 2013-07-05 2013-09-18 戴纳派克（中国）压实摊铺设备有限公司 螺旋叶片及摊铺机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT369806B (de) * 1979-12-12 1983-02-10 Plasser Bahnbaumasch Franz Gleisbaumaschine mit vibrierbaren stopfwerkzeugen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1911966A (en) * 1930-07-24 1933-05-30 Malleable Iron Fittings Co Tool for use in making concrete
GB478243A (en) * 1935-07-08 1938-01-10 Heinrich Steinhage G M B H Improvements in and relating to methods of consolidating permanent way beds and apparatus therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE682107C (de) * 1935-07-09 1941-05-09 Heinrich Steinhage G M B H Verfahren zur Verdichtung von Gleisbettungen
BE524944A (OSRAM) * 1952-12-10
DE948514C (de) * 1954-02-14 1956-09-06 Wilhelm Waesche Ausbildung der Stopfplatten bei Gleisstopfmaschinen
DE1017639B (de) * 1955-09-19 1957-10-17 Deutsche Bundesbahn Gleisstopfmaschine mit als heb- und senkbare, schwenkbare Kniehebel ausgebildeten Stopfwerkzeugen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1911966A (en) * 1930-07-24 1933-05-30 Malleable Iron Fittings Co Tool for use in making concrete
GB478243A (en) * 1935-07-08 1938-01-10 Heinrich Steinhage G M B H Improvements in and relating to methods of consolidating permanent way beds and apparatus therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2308559C2 (ru) * 2005-12-12 2007-10-20 Анатолий Николаевич Шилкин Подбивочно-уплотнительный инструмент шпалоподбивочной машины
CN103306184A (zh) * 2013-07-05 2013-09-18 戴纳派克（中国）压实摊铺设备有限公司 螺旋叶片及摊铺机
CN103306184B (zh) * 2013-07-05 2016-06-29 戴纳派克（中国）压实摊铺设备有限公司 螺旋叶片及摊铺机

Also Published As

Publication number Publication date
SE322251B (OSRAM) 1970-04-06
GB1130890A (en) 1968-10-16
DE1283255B (de) 1968-11-21
CH475419A (de) 1969-07-15
AT287768B (de) 1971-02-10
DE6603787U (de) 1969-11-13

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