US3494298A - Apparatus for aligning curves - Google Patents

Apparatus for aligning curves Download PDF

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Publication number
US3494298A
US3494298A US715396A US3494298DA US3494298A US 3494298 A US3494298 A US 3494298A US 715396 A US715396 A US 715396A US 3494298D A US3494298D A US 3494298DA US 3494298 A US3494298 A US 3494298A
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US
United States
Prior art keywords
track
receiver
shadow board
transmitter
shadow
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
US715396A
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English (en)
Inventor
Floyd A Glasser
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TAMPER Inc
Original Assignee
TAMPER 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 TAMPER Inc filed Critical TAMPER Inc
Application granted granted Critical
Publication of US3494298A publication Critical patent/US3494298A/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
    • 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

  • ABSTRACT OF THE DISCLOSURE A method and apparatus for aligning curves between tangent and circular track in which a reference line is formed generally longitudinally of the track and to one side thereof by means of; a light beam transmitter mounted for movement along the track; a light beam receiver spaced therefrom and oriented to receive the transmitted beam, transmitter and receiver being arranged at fixed spacings from and at the same side of the track and referenced thereto, and; a shadow board mounted on the track between transmitter and receiver and referenced to the track, the shadow board being transversely extended outwardly of the track or retracted to optically align transmitter, receiver and shadow board to produce the reference line and, after forming the reference line, superposing a further positive or negative motion on the shadow board to move the shadow board out of alignment by a predetermined track correction factor and thereafter operating a jacking means to throw the track in a sense determined by the beam receiver to re-align the shadow board, transmitter and receiver and thereby correct the error.
  • the present invention provides a method of correcting the horizontal misalignment of railway transition curves comprising forming a reference line to the curve by optically aligning a transversely movable shadow board positioned at a track correcting station between a light beam transmitter and a light beam receiver spaced therefrom; superposing a predetermined positive or negative correction factor on the shadow board to move it out of alignment; and correcting the track by horizontally shifting it in a sense determined by the beam receiver to re-align shadow board, transmitter and receiver.
  • the present invention also provides apparatus for correcting the horizontal misalignment of railway transition curves comprising light beam transmitter means, horizontally referenced to the track and mounted for movement along the track and adapted to project a light beam generally longitudinally of the track; a light beam receiver spaced from the transmitter, horizontally referenced to the track and mounted for movement along the track and oriented to receive the light beam; a shadow board, horizontally referenced to the track and mounted for movement along the track between the transmitter and the receiver; means for moving the shadow board transversely of the track which means is controlled from the receiver to move the shadow board in one direction or another transversely of the track in a sense determined by reception at the receiver; and means to further move the shadow board transversely of the track to apply a track correction factor to the shadow board.
  • FIGURE 1 is a diagrammatic representation of the mode of operation of the device.
  • FIGURE 2 is a schematic representation of one means of applying a correction factor to the shadow board.
  • the solid line T indicates the desired configuration of a transition curve, or spiral.
  • the dotted configuration E is an exaggerated indication of misalignment of the track in the horizontal plane, at a point A, the error being in a positive sense, that is to say, in a sense which increases the radius of curvature, the extent of the error being indicated by B.
  • transition curve has been previously measured to stakes and that the error of the track positively or negatively (that is to say, in a sense which reduces the radius of curvature) at each staked point, such as A, has been marked either on the stake or a desired correction has been indicated at a particular tie.
  • An averaging of the errors to the staked absolute may also have been conducted and appropriately marked on the ties.
  • a light beam transmitter such as the infra-red transmitter 10, directs a beam of light generally longitudinally of the track where it is picked up by a receiver 12.
  • Transmitters and receivers of this type are well known in the art and preferably the transmitter is mounted for movement independently of the receiver 12 on a self-propelled satellite car.
  • the receiver 12 may conveniently be located for movement along the track behind, or at the rear of, a track aligning vehicle of standard configuration carrying a track throwing jack to move the track horizontally to the left or to the right.
  • the transmitter 10 and the receiver 12 can conveniently be mounted so as each to be at a fixed spaced distance transversely of one side of the track, and referenced thereto.
  • the shadow board may be arranged in guides 17 and driven so as to be extended transversely outwardly, or retracted back towards, the track by means of an electric motor 19 driving through a clutch 20, a bevel gear 21 and lead screw 22.
  • the frame, and consequently the shadow board, is referenced to the track in the usual fashion as indicated by the referencing wheel 25.
  • the third point is established by extending the shadow board into the path of the beam until its ti is aligned with the transmitter and the receiver. In practice, this is preferably performed as a hunting operation. That is to say, when the shadow board 15 is not in the path of the receiver 12, it, in conventional fashion, sends a command signal to the motor 19 to drive the lead screw 22 to extend the shadow board 15 outwardly until it reaches a point where it obscures the receiver 12 from the transmitter 10.
  • the receiver 12 sends a command signal to the motor 19 to retract the shadow board 15 towards the track. Almost instantly the receiver 12 will again see the transmitted light and will, once more, send a command signal to move the shadow board forward to a point where it will, once again, obscure the receiver from the transmitter.
  • the shadow board is automatically, in conventional form, locked in its position and the reference line is established.
  • the shadow board which is now at point A, needed to be extended by the error distance B more than the distance which would be necessary to provide the versine to the curve T had the curve T been in its ideal position.
  • Indicated on the tie at point A, or on the stake at point A, will be the magnitude and direction of the error B, in this instance, say, an error of +5.
  • the operator by operating the rotary switch 30, which is of standard configuration, causes the application of a series of calibrated pulses to the motor 19 to retract the shadow board.
  • the rotary switch 30 is conveniently calibrated so that the operator :an apply a indication on the switch 30 and the ihadow board will be retracted by an amount which agrees with the error marked on the tie or stake.
  • a standard servo follow-up loop including a cam 31 and a countng switch 32, ensures that the shadow board is moved the required distance.
  • the shadow board is now retracted by a distance B, which is the same as B, and the stage is set for a track :orrecting operation.
  • B the same as B
  • the receiver 12 sees the transmitted beam from the transmitter and calls, in standard fashion, upon the track throwing jack to move the track from the dotted position E to the full line position I, As the track is moved, the locked shadow board is moved with it until the shadow board obscures the transrnitted beam from the receiver 12 at which point the :acking terminates and the track has been corrected.
  • the receiver 12 observes the transmitted beam and jacking is terminated.
  • a mechanical lead screw may be provided which is suitably calibrated and hand operated.
  • Apparatus for correcting the horizontal misalignment of railway curves comprising light beam transmitter means, horizontally referenced to the track and mounted for movement along the track and adapted to project a light beam generally longitudinally of the track; a light beam receiver spaced from the transmitter, horizontally referenced to the track and mounted for movement along the track and oriented to receive the light beam; a track condition sensor including a frame, horizontally referenced to the track and mounted for movement along the track between the transmitter and the receiver; a shadow board mounted on said frame; motor means for moving the shadow board on the frame transversely of the track which motor means is controlled from the receiver to move the shadow board inwardly or outwardly transversely of the track in a sense determined by reception at the receiver, whereby to establish a reference line; and means for super-posing a command signal on the motor means to further move the shadow board transversely of the track to apply a track correction factor to the shadow board.
  • Apparatus as claimed in claim 1 in which the means for moving the shadow board transversely of the track comprises an electric motor connected to extend the shadow board transversely outwardly of the track in response to beam reception by the receiver and to retract the shadow board when the receiver is obscured from the transmitter.
  • Apparatus as claimed in claim 3 in which the means for further moving the shadow board to apply the track correction factor, comprises a rotary switch operable to cause the motor to extend the shadow board and a second rotary switch operable to cause the motor to retract the shadow board, the switches operating through a servo follow-up system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Length Measuring Devices By Optical Means (AREA)
US715396A 1968-03-22 1968-03-22 Apparatus for aligning curves Expired - Lifetime US3494298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71539668A 1968-03-22 1968-03-22

Publications (1)

Publication Number Publication Date
US3494298A true US3494298A (en) 1970-02-10

Family

ID=24873856

Family Applications (1)

Application Number Title Priority Date Filing Date
US715396A Expired - Lifetime US3494298A (en) 1968-03-22 1968-03-22 Apparatus for aligning curves

Country Status (5)

Country Link
US (1) US3494298A (cs)
AT (1) AT308799B (cs)
CH (1) CH503840A (cs)
CS (1) CS222202B2 (cs)
ES (1) ES365020A1 (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658730A (en) * 1983-12-28 1987-04-21 Canron Corp. Railroad correction apparatus
CN112595299A (zh) * 2020-12-10 2021-04-02 瑞昌市正元核地信息产业有限公司 一种易于安装的监测用测钉

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111908A (en) * 1959-03-25 1963-11-26 Plasser Franz Method for lifting track rails
US3134339A (en) * 1960-02-16 1964-05-26 Plasser Franz Track aligning apparatus
US3312179A (en) * 1963-10-08 1967-04-04 Canada Iron Foundries Ltd Track levelling device
US3380394A (en) * 1965-08-27 1968-04-30 Matisa Materiel Ind Sa Equipment for determining the geometric condition of a track and controlling the slew or lift thereof
US3391648A (en) * 1965-03-16 1968-07-09 Tamper Inc Method and apparatus for track working

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111908A (en) * 1959-03-25 1963-11-26 Plasser Franz Method for lifting track rails
US3134339A (en) * 1960-02-16 1964-05-26 Plasser Franz Track aligning apparatus
US3312179A (en) * 1963-10-08 1967-04-04 Canada Iron Foundries Ltd Track levelling device
US3391648A (en) * 1965-03-16 1968-07-09 Tamper Inc Method and apparatus for track working
US3380394A (en) * 1965-08-27 1968-04-30 Matisa Materiel Ind Sa Equipment for determining the geometric condition of a track and controlling the slew or lift thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658730A (en) * 1983-12-28 1987-04-21 Canron Corp. Railroad correction apparatus
CN112595299A (zh) * 2020-12-10 2021-04-02 瑞昌市正元核地信息产业有限公司 一种易于安装的监测用测钉
CN112595299B (zh) * 2020-12-10 2022-09-02 杭州谱尼检测科技有限公司 一种易于安装的监测用测钉

Also Published As

Publication number Publication date
CS222202B2 (en) 1983-05-27
AT308799B (de) 1973-07-25
CH503840A (de) 1971-02-28
ES365020A1 (es) 1971-01-16

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