US3714901A - Tie tamper - Google Patents

Tie tamper Download PDF

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Publication number
US3714901A
US3714901A US00079773A US3714901DA US3714901A US 3714901 A US3714901 A US 3714901A US 00079773 A US00079773 A US 00079773A US 3714901D A US3714901D A US 3714901DA US 3714901 A US3714901 A US 3714901A
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US
United States
Prior art keywords
tamping
heads
machine
tie
tamping heads
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.)
Expired - Lifetime
Application number
US00079773A
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English (en)
Inventor
J Stewart
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.)
Canron Inc
Original Assignee
Canron Inc
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 Canron Inc filed Critical Canron Inc
Application granted granted Critical
Publication of US3714901A publication Critical patent/US3714901A/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
    • E01B27/12—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
    • E01B2203/12—Tamping devices

Definitions

  • the present invention relates to multiple headed railroad track tamping machines.
  • PIG. 1 is a diagrammatic representation of a multiple headed machine
  • FIG. 2 is a cycle diagram showing one form of the invention method.
  • FIG. 1 shows a multiple headed raliroad track tamping machine having a front set (one head for each rail) of tamping heads 11 and a rear set of tamping heads 12.
  • a track lifting and aligning jack device schematically shown at J. v
  • the tamping heads can conveniently be of the variety in which the front set 11 is fixed and the rear set 12 is mounted for movement backwards and forwards on the chassis lCC 17 of the machine, the rfront and rear heads being provided with their own tie seeking indexers 19 and 20 respectively.
  • Such devices so far referred to are well known in the art.
  • Conventional machines operate such that the tie indexer on the front tamping head will encounter a tie and send a signal to stop the forward motion of the machine 10 by applying brakes. Sequentially the tamping head 11 will be dropped into the ballast about the tie to be tamped and hydraulic pressure will be applied to squeeze cylinders 13 on the tamping head which causes the tips (which are vibrated by electrical motors) of the tamping bars 14 to come towards each other beneath the tie being tamped to consolidate the ballast.
  • a pressure sensitive switch 15 which has been preset to a required pressure, operates to release the pressure from the squeeze cylinders 13 and to outfeed the tamping heads Whilst at the same time applying pressure to an upfeed cylinder 16 to lift the tamping heads out of the ballast.
  • a switch is stripped by the tamping heads and forward travel of the vehicle is once more initiated.
  • a track lifting and aligning operation by means of the jack device J. Clamps engage the track and the track is lifted and corrected in horizontal alignment under the supervision of a light beam reference.
  • the lifting and aligning operation is normally sequenced to occur around about the time that the tamping heads are squeezed in.
  • the invention envisages that in one embodiment thereof two tamping heads 11, 12 can be utilized on a machine which has a power supply previously used for a standard front headed Y machine with a production rate insiniicantly lower than twice the production rate of that machine.
  • the front tie indexer 19 engages a tie and causing the application of the vehicle brakes to stop the machine with the iront set of tamping heads 11 arranged over the tie to be tamped by them.
  • the tie indexer 19 also initiates the front tamping cycle and the jacking and aligning cycle.
  • the rear set of tamping heads 12 will seek their respective tie in a manner known in the art and described, for example, in our U.S. Pat. 3,504,635, issued Apr. 7, 1970.
  • the front workhead is relased to drop under its own weight and at the same time the clamps for the track lifting and aligning jack J engage the track.
  • the squeezing phase of the operation of the front heads is, as is common, sequenced to occur virtually simultaneously with the jacking and aligning operation for the track.
  • the squeezing phase of the front tamping heads containues until the pressure sensed by the pressure switch 15 reaches its preselected value, whereupon the pressure switch operates to arrest the squeezing action of the front upfeeding from the ballast.
  • the lifting and aligning jack J and its clamps are retracted.
  • pressure switch 15 additionally controls the valving sqeuence so that the rear head commences its squeeze phase which continues until the rear pressure switch 25 operates, whereupon the rear set of tamping heads 12 is outfed and upfed from the lballast. As the rear head is raised it trips a switch (not shown) which initiates the forward travel of the machine to its next operating station. Since the peak demand during the tamping cycle occurs at the squeeze phase, this sequencing of the squeeze phases insures that the peak power demands are staggered.
  • the irnprovement comprising the step of automatically the operation of the sets of tamping heads so that their peak power demands are staggered.
  • a method as claimed in claim 1 in which the operation of the sets of tamping heads comprises: lowering the heads into the ballast; squeezing the ballast about a tie to be tamped to consolidate the ballast; and withdrawing the heads from the ballast; the sequencing being such that the squeeze phase of the front set of tamping heads is completed before the squeeze phase of the rear set of tamping heads commences.
  • Apparatus as claimed in claim 4 in which the means 'ifor sequencing the operation of the sets of tamping heads includes a pressure sensitive switch operable when the front set of tamping heads has completed the squeeze phase of this operation to initiate the squeeze phase of the rear set of tamping heads.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
US00079773A 1970-10-12 1970-10-12 Tie tamper Expired - Lifetime US3714901A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7977370A 1970-10-12 1970-10-12

Publications (1)

Publication Number Publication Date
US3714901A true US3714901A (en) 1973-02-06

Family

ID=22152725

Family Applications (1)

Application Number Title Priority Date Filing Date
US00079773A Expired - Lifetime US3714901A (en) 1970-10-12 1970-10-12 Tie tamper

Country Status (6)

Country Link
US (1) US3714901A (enrdf_load_stackoverflow)
JP (1) JPS5245966B1 (enrdf_load_stackoverflow)
AT (1) AT316620B (enrdf_load_stackoverflow)
CA (1) CA951967A (enrdf_load_stackoverflow)
DE (1) DE2150850C3 (enrdf_load_stackoverflow)
GB (1) GB1344147A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218978A (en) * 1977-02-18 1980-08-26 Matisa Materiel Industriel S.A. Apparatus for tamping or packing the bed of railway tracks

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54119174U (enrdf_load_stackoverflow) * 1978-02-06 1979-08-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218978A (en) * 1977-02-18 1980-08-26 Matisa Materiel Industriel S.A. Apparatus for tamping or packing the bed of railway tracks

Also Published As

Publication number Publication date
DE2150850C3 (de) 1978-10-19
DE2150850A1 (de) 1972-04-13
DE2150850B2 (enrdf_load_stackoverflow) 1978-03-09
JPS5245966B1 (enrdf_load_stackoverflow) 1977-11-19
GB1344147A (en) 1974-01-16
AT316620B (de) 1974-07-25
CA951967A (en) 1974-07-30

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