US3875865A - Apparatus for correcting the position of a track - Google Patents

Apparatus for correcting the position of a track Download PDF

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Publication number
US3875865A
US3875865A US332133A US33213373A US3875865A US 3875865 A US3875865 A US 3875865A US 332133 A US332133 A US 332133A US 33213373 A US33213373 A US 33213373A US 3875865 A US3875865 A US 3875865A
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Prior art keywords
track
correction
point
uncorrected
section
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Expired - Lifetime
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US332133A
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English (en)
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Franz Plasser
Theurer Josef
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Franz Plasser Bahnbaumaschinen Industrie GmbH
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B35/00—Applications of measuring apparatus or devices for track-building purposes
    • 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

  • the apparatus includes track position and track position correction indicators at the one track point and the track point in the uncorrected track section, respectively, a control establishing a set ratio between signals emitted from the indicators. which ratio determines the desired track position, and means for selectively changing the set ratio while the reference remains constant.
  • the present invention relates to improvements in a system of correcting the position of a track point in an uncorrected track section in relation to a reference ex tending past this track point along the track from a corrected track section into the uncorrected track section, wherein a basic or characteristic parameter indicating the position of one track point is produced and the correction of the position of the track point in the uncorrected track section is determined by a set ratio of this parameter,
  • Track correction systems of this general type are known.
  • U.S. Pat. No. 3,314,154, dated April l8, 1967 describes a so-called two-chord system wherein a first, longer chordal reference line is extended between two end points of a track section, the position of a first track point is measured and indicated in relation to this reference line to provide a basic parameter and an analogous parameter is derived therefrom for the same point in relation to a second, shorter reference line extended between one of the end points and a second point of the track section to be corrected, the analogous parameter being a function of the set ratio between the lengths of the reference lines.
  • the second track point is then moved until it has reached the analogous parameter in relation to the second reference line.
  • This object is accomplished by selectively changing the correction ratio and moving the track at the track point in the uncorrected track section until the changed correction ratio has been reached.
  • the correction ratio is increased.
  • the apparatus comprises a reference line having one end in the uncorrected track section and another end in a previously corrected track section. a track position indicator associated with a track point in the corrected track section and cooperating with the reference line to produce a signal corresponding to the position of the track in the corrected track section, and a track position correction indicator associated with the track point in the uncorrected track section and cooperating with the reference line to produce a signal corresponding to the desired correction of the position of the latter track point.
  • Track correction means is positioned at the track point in the uncorrected track section, which is responsive to the signal produced by the track position correction indicator and which moves the track point to the desired position in response to the latter signal, and a control establishes a set ratio between the signals of the track position indicator and the track position correction indicator, which ratio determines the desired position.
  • the operator of such an apparatus has the possibility of carrying out the above-described method therewith by providing on the apparatus a means for selectively changing the set ratio while the reference line remains in a constant position.
  • This means is associated with the control.
  • FIG. 1 schematically illustrates lining of a track curve with a single chordal reference
  • FIG. 2 similarly shows lining of a straight or tangent track section
  • FIG. 3 schematically illustrates leveling of a track section
  • FIG. 4 is a schematic side view of the measuring spindle of a track measuring carriage working with two chordal references.
  • FIG. 1 shows an arcuate or circularly curved track section or track curve 1 defined by track points 2, 3, 4 and 5.
  • Points 2 and 3 are in the previously corrected track section, point 2 constituting one of the end points of track curve 1.
  • Point 4 constitutes the track correction point, i.e., the point of the track whose position is being corrected in accordance with the present invention by schematically indicated track correction tool 6.
  • Point 5 constitutes the other end point of the track curve in an uncorrected section thereof.
  • chordal references for instance a reference beam of radiated energy emitted at one of the end points and received at the other end point.
  • track measuring carriages or bogies are mounted on the track rails at each of the track position defining points 2, 3, 4 and 5, and these carriages are pressed against the grade rail to fix these points accurately in the established reference system.
  • a track position indicator 8 is mounted at corrected track point 3 at a fixed distance from the grade rail.
  • dicator 8 comprises a forked member 9 receiving and engaging chordal reference 7 in a manner permitting free movement of the reference in the forked member, and a potentiometer connected to the forked member so as to indicate the position of the reference at this point and to emit a signal corresponding to the measured track position.
  • a track correction indicator is mounted at track position correction point 4, also at a fixed distance from the grade rail and similarly comprising a forked member 9 receiving and engaging chordal reference 7 in a like manner, the potentiometer connected to forked member 9 indicating the position of the reference at point 4 and emitting a signal corresponding to the required correction of the track position at this point.
  • corrected track point 3 and correction track point 4 are symmetrically positioned in respect to the center point of the circularly curved track section 1 so that the heights of the are or ordinates at indicators 8 and 10 should be the same after correction, i.e., the ratio of the parameters indicating the corrected track position and the track position to be corrected is 1:].
  • a track correction control 11 is connected to the potentiometers of indicators 8 and 10 to receive the signals therefrom, the electrical control circuit including a control line 12 connecting the control 11 to a drive for track correction tool 6 to move the tool, which grips the track rails, until the ordinates y at points 3 and 4 are the same, i.e., have a ratio of 1:1.
  • FIG. 2 shows lining of a straight track section
  • the procedure is, in principle, identical with that for a track curve since a straight track section is merely a tangent track, i.e., a circularly curved track section of infinite radius.
  • identical numerals in FIG. 2 refer to identical parts, thus avoiding redundancy in the description.
  • the track position indicator at track point 3 shows an error of the position of the reference 7 in respect of the grade rail, which is due to the deviation of the reference end point 5 from the straight track.
  • a correction ratio of l 1 at point 4 if the track correction tool 6 moves the track at point 4 the same distance x, a residual positional errorfwill remain at point 4 after correction.
  • This residual error may be reduced to distance f if the correction ratio is increased in accordance with this invention so that track point 4 is moved by distance ax instead of distance .r.
  • the correction control circuit comprises a voltage source delivering electric current to the potentiometers at forked members 8 and 10, and resistors 14 operable by rotary head 13 in the current delivery line so as to reduce the voltage delivered to the potemtiometer at forked member 10 associated with the track point to be corrected. If the voltage delivered to the potentiometer at forked member 8 associated with the corrected track point remains constant, the correction ratio or the ratio of the voltage of the signals emitted by the potentiometers will be so changed that the voltages will balance again only when the track point 4 is moved a longer distance.
  • FIG. 3 shows the system of this invention applied to track leveling or grading. It will be understood that this does not differ, in principle, from track lining since, in track leveling, the plane of correction is merely turned by i.e., the track is moved in a vertical instead of a horizontal plane.
  • the reference 7' which is illustrated as a tensioned wire, extends from corrected end point 2' to forward end point 5' in the uncorrected or ungraded track section.
  • the track leveling is effected in a generally well known manner by a mobile track leveling and tamping machine which runs on the track rails, the machine being represented in the schematic showing only by axle 16 supporting the machine in the corrected track section, track tamping unit 17 and track lifting tool 18.
  • a track position correction indicator 8' is mounted on the machine in the range of the track tamping unit 17, which is mounted at the track correction point, i.e., where the raised or graded track is fixed in its corrected position.
  • indicator 8' will signal the corrected position of the track at unit 17.
  • the track correction indicator 10' cooperates with track position indicator 8', the potentiometers of the two indicators sending their signals to control unit 11 which controls the movement of track lifting tool 18.
  • the correction ratio is again changeable by variable resistor 14' in the electrical control circuit.
  • FIG. 4 shows an apparatus useful for track alignment with the use of two chordal references, as more fully described and claimed, for instance, in U.S. Pats. Nos. 3,314,154, 3,314,373, both dated Apr. 18, 1967, whose disclosures are incorporated herein by reference.
  • the measuring carriage or bogie which runs on the track rails, is pressed into a fixed relationship against grade rail 19, spring, magnetic or pressure fluid jack means having been proposed for this purpose, for instance.
  • the long chord of the reference system passes between a pair 20 of electrical contacts while the short reference chord passes between pair 21 of electrical contacts.
  • Each pair of electrical contacts is mounted on a nut respectively engaging a threaded spindle section 23 and 24 of different pitch.
  • the two spindle sections are interconnected by a gearing 25 and t are thus rotatable in unison by motor 22 which drives spindle section 23.
  • the ratio of the pitches of threaded spindle sections 23 and 24 corresponds to the ratio of the ordinates of the long and short chords, which is the same as the ratio of the chord lengths, the pitch of section 24 being smaller than that of section 23.
  • each pair of contacts travels through a path which is a function of the ordinate of the longer chord, i.e., its distance from the track point being corrected.
  • the ordinate of the shorter chord is automatically indicated and fixed, the end point of this chord being used for lining the track point.
  • the ratio between the ordinates is 1 3. If the transmission ratio of gearing 25 is l l, the two pairs of contacts will move at distances of a ratio 1 3.
  • the operator will move the pair of contacts until the longer chord of the reference system is out of contact with the two contacts, i.e., until it is centered therebetween and touches neither contact. This establishes the determining ordinate.
  • the pair of contacts 21 are automatically moved at a ratio of 3 l of the distance of movement of contacts 20, due to the different pitch of spindle section 24. This automatically establishes the desired ordinate of the track point to be corrected, and this point is, therefore, laterally moved until the short chord is centered between the contacts of pair 21, i.e., no longer touches either one of these contacts. This completes the lining at this point.
  • this .procedure involves a residual correction error, due to the incorrect positioning of the long chord at the cor rection point.
  • This error is reduced or substantially avoided in accordance with this invention by changing the transmission ratio between the two spindle sections of different pitch, which may be done by a transmission 25 having a ratio other than 1 1, preferably an infinitely variable speed transmission. This will automati cally change the ratio of the ordinates of the long and short chords otherwise determined by the different pitches of the two spindle sections.
  • the track correction means being responsive to the signal produced by the track position correction indicator and moving the track point to the desired position in response to said latter signal, and
  • the control comprises an electrical control circuit including a voltage source delivering a voltage to the potentiometers, the means comprising variable resistance means between the voltage source and at least one of the potentiometers to change the voltage delivered thereto.
  • the track correction means being responsive to the signal produced by the track position correction indicator and moving the track point to the desired position in response to said latter signal, and

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
US332133A 1972-03-14 1973-02-13 Apparatus for correcting the position of a track Expired - Lifetime US3875865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT215472A AT323787B (de) 1972-03-14 1972-03-14 Anordnung zur korrektur von lagefehleen in gleisen

Publications (1)

Publication Number Publication Date
US3875865A true US3875865A (en) 1975-04-08

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US332133A Expired - Lifetime US3875865A (en) 1972-03-14 1973-02-13 Apparatus for correcting the position of a track

Country Status (7)

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US (1) US3875865A (fr)
AT (1) AT323787B (fr)
CA (1) CA988368A (fr)
CH (1) CH560806A5 (fr)
DE (1) DE2300163C3 (fr)
FR (1) FR2175992B1 (fr)
GB (1) GB1423574A (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166291A (en) * 1977-12-21 1979-08-28 Canron, Inc. Chord liner using angle measurement
US4658730A (en) * 1983-12-28 1987-04-21 Canron Corp. Railroad correction apparatus
US6220170B1 (en) * 1998-01-19 2001-04-24 Franz Plasser Bahnbaumaschinen-Industriegessellschaft M.B.H. Method of correcting the position of a railroad track
US6260485B1 (en) * 1999-02-10 2001-07-17 Franz Plasser Bahnbaumaschinen Method for correcting the position of a track
US8914171B2 (en) 2012-11-21 2014-12-16 General Electric Company Route examining system and method
US9255913B2 (en) 2013-07-31 2016-02-09 General Electric Company System and method for acoustically identifying damaged sections of a route
US9671358B2 (en) 2012-08-10 2017-06-06 General Electric Company Route examining system and method
US9689681B2 (en) 2014-08-12 2017-06-27 General Electric Company System and method for vehicle operation
US9702715B2 (en) 2012-10-17 2017-07-11 General Electric Company Distributed energy management system and method for a vehicle system
US9733625B2 (en) 2006-03-20 2017-08-15 General Electric Company Trip optimization system and method for a train
US9828010B2 (en) 2006-03-20 2017-11-28 General Electric Company System, method and computer software code for determining a mission plan for a powered system using signal aspect information
US9950722B2 (en) 2003-01-06 2018-04-24 General Electric Company System and method for vehicle control
US9956974B2 (en) 2004-07-23 2018-05-01 General Electric Company Vehicle consist configuration control
US10308265B2 (en) 2006-03-20 2019-06-04 Ge Global Sourcing Llc Vehicle control system and method
US20210222373A1 (en) * 2018-08-20 2021-07-22 Hp3 Real Gmbh Method for automatic correction of the position of a track

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH657881A5 (de) * 1980-11-04 1986-09-30 Canron Inc Crissier Verfahren und vorrichtung zur vermessung der lage eines eisenbahngleises.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604359A (en) * 1969-04-04 1971-09-14 Railway Maintenance Corp Apparatus for correcting railroad track
US3659345A (en) * 1969-12-19 1972-05-02 Plasser Bahnbaumasch Franz Mobile track surfacing apparatus
US3662687A (en) * 1969-06-12 1972-05-16 Robel & Co Track levelling and tamping machines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1217423B (de) * 1964-04-03 1966-05-26 Plasser Bahnbaumasch Franz Verfahren zum Ausrichten eines Gleises sowie Einrichtung zur Durchfuehrung des Verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604359A (en) * 1969-04-04 1971-09-14 Railway Maintenance Corp Apparatus for correcting railroad track
US3662687A (en) * 1969-06-12 1972-05-16 Robel & Co Track levelling and tamping machines
US3659345A (en) * 1969-12-19 1972-05-02 Plasser Bahnbaumasch Franz Mobile track surfacing apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166291A (en) * 1977-12-21 1979-08-28 Canron, Inc. Chord liner using angle measurement
US4658730A (en) * 1983-12-28 1987-04-21 Canron Corp. Railroad correction apparatus
US6220170B1 (en) * 1998-01-19 2001-04-24 Franz Plasser Bahnbaumaschinen-Industriegessellschaft M.B.H. Method of correcting the position of a railroad track
US6260485B1 (en) * 1999-02-10 2001-07-17 Franz Plasser Bahnbaumaschinen Method for correcting the position of a track
US9950722B2 (en) 2003-01-06 2018-04-24 General Electric Company System and method for vehicle control
US9956974B2 (en) 2004-07-23 2018-05-01 General Electric Company Vehicle consist configuration control
US9828010B2 (en) 2006-03-20 2017-11-28 General Electric Company System, method and computer software code for determining a mission plan for a powered system using signal aspect information
US10308265B2 (en) 2006-03-20 2019-06-04 Ge Global Sourcing Llc Vehicle control system and method
US9733625B2 (en) 2006-03-20 2017-08-15 General Electric Company Trip optimization system and method for a train
US9671358B2 (en) 2012-08-10 2017-06-06 General Electric Company Route examining system and method
US9702715B2 (en) 2012-10-17 2017-07-11 General Electric Company Distributed energy management system and method for a vehicle system
US8914171B2 (en) 2012-11-21 2014-12-16 General Electric Company Route examining system and method
US9255913B2 (en) 2013-07-31 2016-02-09 General Electric Company System and method for acoustically identifying damaged sections of a route
US9689681B2 (en) 2014-08-12 2017-06-27 General Electric Company System and method for vehicle operation
US20210222373A1 (en) * 2018-08-20 2021-07-22 Hp3 Real Gmbh Method for automatic correction of the position of a track
US11982056B2 (en) * 2018-08-20 2024-05-14 Hp3 Real Gmbh Method for automatic correction of the position of a track

Also Published As

Publication number Publication date
DE2300163A1 (de) 1973-09-20
FR2175992A1 (fr) 1973-10-26
FR2175992B1 (fr) 1977-04-22
DE2300163B2 (de) 1981-04-23
CH560806A5 (fr) 1975-04-15
GB1423574A (en) 1976-02-04
DE2300163C3 (de) 1982-01-14
AT323787B (de) 1975-07-25
CA988368A (en) 1976-05-04

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