US3298105A - High frequency surveying device - Google Patents

High frequency surveying device Download PDF

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Publication number
US3298105A
US3298105A US294783A US29478363A US3298105A US 3298105 A US3298105 A US 3298105A US 294783 A US294783 A US 294783A US 29478363 A US29478363 A US 29478363A US 3298105 A US3298105 A US 3298105A
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receivers
track
transmitter
rail
high frequency
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Expired - Lifetime
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US294783A
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English (en)
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John K Stewart
Beckmann Helmuth R E Von
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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 present invention removes the necessity of provid ing such a tremendously fast response gravity sensor by providing a railway track surveying apparatus comprising a high frequency beam transmitter mounted for movement along a track and for transmitting a high frequency cone-like beam substantially longitudinally of the track, a pair of beam receivers, one for each rail of the track mounted for movement along the track in spaced relationship to the transmitter within the transmitted cone; shadow means for each receiver mounted for movement along the track and located intermediate the transmitter and receivers and substantially nearer to the receivers than to the transmitters; means for adjusting the vertical height of the receivers; gravity sensing means adapted to control the means for adjusting the vertical height of a selected one of the receivers whereby to maintain one of the receivers in cross level relative to the grade rail.
  • FIGURE 1 is a schematic plan view showing the device on a railway track
  • FIGURE 2 is an elevation showing the receivers mounted on a rail engaging frame
  • FIGURE 3 and 3A are schematic diagrams showing the exaggerated position of the frame in a left hand curve
  • FIGURE 4 is a detail of the pendulum and switches.
  • FIGURE 5 is a schematic of an alternative form of gravity sensor.
  • a self propelled buggy 10 is provided with a pair of high frequency beam transmitters 11 such as a pair of infra-red beam transmitters, one of which will only be in use at one time, and that, the transmitter above the grade rail.
  • the transmitters 111 transmit a cone of infrared or other high frequency radiation longitudinally along the track towards the carriage 1.4.
  • the carriage 14 is preferably a jacking and tamping car and has a pair of receivers 15a, 15!) mounted on the frame 16 which is in turn mounted with the rear axle 17 of the car 14.
  • the frame 16 is mounted for movement along the track in spaced relation to the transmitter and within the transmitted cone.
  • the frame could be supported for movement along the track independently of the jacking and tamping car carriage 14.
  • a pair of shadow boards 20, one for each receiver, are mounted on rail engaging wheels 21 on a frame 22 which is connected to the front of the car 14.
  • the shadow boards are mounted for movement along the track and located intermediate of the transmitter and receiver and preferably nearer the receivers than the transmitter.
  • Means are provided for adjusting the vertical height of the receivers so as to maintain the receiver associated with the non grade rail in cross level condition relative to the receiver associated with the grade rail. While various arrangements can be employed, in the disclosed construction receivers 15a, 1512 are connected to the frame 16 through a pair of screw jacks 24a, 24b, operated by the motors 26 and 26b mounted on the frame 16 to raise and lower the receivers. Pivotally connected at its ends to the brackets 30 on which the receivers 15a, 15b, are mounted is a cross bar 31. At the center of the cross bar there is provided a casing 3-4 braced by struts 35, 36, in which there is provided a gravity sensing means for controlling the means for adjusting the vertical height of the receivers. While various arrangements can be employed in the construction shown in FIGURE 2, a pendulum 37 is pivotally mounted at 38. Mounted Within the casing 34 are micro switches 39 and 40 the positions of which are adjusted relative to the casing 34, for calibration, by screws 41, 42.
  • cross level to the grade rail is intended to define an actual geographical condition, wherein the receivers are either maintained in a common horizontal plane or are maintained in horizontal planes the spacing of which does not vary substantially.
  • the condition diagrammatic-ally shown in FIGURE 3A is one which could be assumed by a modification of the arrangement shown in FIGURE 2 in which the receivers (and their associated shadow boards) are located in horizontal planes spaced apart by a distance N. The spacing N is substantially maintained regardless of whether the receivers are on tangent or curved track.
  • any other gravity sensor device could be used and an example of another preferred form is seen in F1- URE 5. It consists essentially of two main partsa gravity sensing electrolytic potentiometer and bridge 51, and a phase sensitive amplifier 52.
  • the gravity sensing potentiometer may be mounted in a casing similar to the casing 34 and mounted on the cross bar in a fashion similar to that shown in FIGURE 2.
  • the gravity sensitive potentiometer 51 is used in a bridge circuit and provides a phase sensitive A.C. signal when misaligned from the horizontal.
  • the phase sensitive amplifier 52 provides a positive or negative DC. output depending upon the phase of the signal from the potentiom ter 51 (depending upon the direction of tilt of the potentiometer 51) and this DC. output is applied to a bridge 53.
  • the output from the bridge 55 controls the motors 26 and 26b which may be simple reversible D.C. shunt wound motors.
  • the embodiment of FEGURE 5 has the added advantage that ,it is more rugged and less sensitive to vibration than is the pendulum device of FIGURE 4. This is particularly true when the majority of the components of the embodiment of FTGURE 5 may be encased in epoxy resin. Furthermore the compactness of this assembly enables the encased components Sli, 52, 53 and a field supply 55 to be enclosed in a casing such as casing 34.
  • the receivers a andldb operate through a suitable circuit such as for example disclosed in Canadian Patent No. 646,048 issued July 31, 1962, inventor lo-hn Kenneth Stewart to control the jacking operation for the individual rail over which they are positioned.
  • a suitable circuit such as for example disclosed in Canadian Patent No. 646,048 issued July 31, 1962, inventor lo-hn Kenneth Stewart to control the jacking operation for the individual rail over which they are positioned.
  • Shadow board adjustment for selection of lift and/0r super-elevation is according to standard procedures such as described in aforementioned Canadian Patent No. 650,557.
  • railway track surveying apparatus including at least one high frequency beam transmitter mounted for move ment along a track and for transmitting a high frequency cone-like beam substantially longitudinally of the track, a pair of beam receivers, one for each rail of the track mounted for movement along the track in spaced relationship to the transmitter within the transmitted cone; shadow means for each receiver mounted for movement along the track and located intermediate the transmitter and receivers and substantially nearer to the receivers than to the transmitter; means for adjusting the vertical height dof the receivers; gravity sensing means for controlling the means for adjusting the vertical height of one of the receivers whereby to maintain the receivers in cross level relative to the grade rail.
  • each receiver is located directly above its associated rail and the transmitter is located directly above the grade rail.
  • Apparatus as claimed in claim 1 in w ich the gravity sensing means comprises a pendulum.
  • each receiver is connected to the frame through a motor driven screw jack.
  • the gravity sensing means is a pendulum housed in a casing attached to the cross bar, switch means being provided within the casing adapted to be operated by contact with the penduil um to actuate a selected motor driven screwjack.
  • the gravity sensing means is a gravity sensing potentiometer and is housed in a casing attached to the cross bar.
  • railway track surveying apparatus including one high frequency beam transmitter mounted for movement along a track and for transmitting a high frequency conelike beam substantially longitudinally of the track, a pair of beam receivers, one for each rail of the track mounted for movement along the tr'ack'in spaced relationship to the transmitter within the transmitted cone; shadow means for each receiver mounted for movement along the track and located intermediate the transmitter and receivers and substantially nearer to the receivers than to the transmitter; means for adjusting the vertical height of the receivers; gravity sensing means for control-ling the means for adjusting the vertical height of the receivers whereby to maintain the receivers in cross level relative to the grade rail.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
US294783A 1963-02-08 1963-04-08 High frequency surveying device Expired - Lifetime US3298105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA868423 1963-02-08

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AT (1) AT273202B (de)
DE (1) DE1459606B1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401642A (en) * 1966-11-04 1968-09-17 Earl H. Fisher Automatic jacking, levelling and lining railroad track tampers
US3459136A (en) * 1966-05-12 1969-08-05 Conquip Ltd Automatic control for track surfacing machines
US3521066A (en) * 1969-02-13 1970-07-21 Fairmont Railway Motors Inc Railroad track alignment indicating system employing modulated infrared techniques
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
US3807311A (en) * 1971-07-14 1974-04-30 Plasser Bahnbaumasch Franz Mobile track tamping and leveling machine
US4274334A (en) * 1978-10-13 1981-06-23 Canron Corporation Machine for changing rails
US4341160A (en) * 1979-03-23 1982-07-27 Sig Societe Industrielle Suisse Mobile machine for the treatment of railway tracks
US4655142A (en) * 1983-11-16 1987-04-07 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Apparatus for correcting the level and cross level of a track
US4658730A (en) * 1983-12-28 1987-04-21 Canron Corp. Railroad correction apparatus
US20060032063A1 (en) * 2004-08-16 2006-02-16 Fabrication Technology Associates, Inc., Also Known As Fab Tech Method and system for controlling railroad surfacing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000099A (en) * 1958-12-31 1961-09-19 Brice E Hayes System of aligning railroad track
CA650557A (en) * 1962-10-16 Canada Iron Foundries Limited Means for determining track level and super elevation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078151B (de) * 1958-01-31 1960-03-24 Ing Josef Theurer Einrichtung zum in Gleislaengsrichtung fortschreitenden Anheben eines Gleisabschnittes
FR1219262A (fr) * 1958-12-05 1960-05-17 Machine pour la réfection des voies ferrées

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA650557A (en) * 1962-10-16 Canada Iron Foundries Limited Means for determining track level and super elevation
US3000099A (en) * 1958-12-31 1961-09-19 Brice E Hayes System of aligning railroad track

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459136A (en) * 1966-05-12 1969-08-05 Conquip Ltd Automatic control for track surfacing machines
US3401642A (en) * 1966-11-04 1968-09-17 Earl H. Fisher Automatic jacking, levelling and lining railroad track tampers
US3521066A (en) * 1969-02-13 1970-07-21 Fairmont Railway Motors Inc Railroad track alignment indicating system employing modulated infrared techniques
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
US3807311A (en) * 1971-07-14 1974-04-30 Plasser Bahnbaumasch Franz Mobile track tamping and leveling machine
US4274334A (en) * 1978-10-13 1981-06-23 Canron Corporation Machine for changing rails
US4341160A (en) * 1979-03-23 1982-07-27 Sig Societe Industrielle Suisse Mobile machine for the treatment of railway tracks
US4655142A (en) * 1983-11-16 1987-04-07 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. Apparatus for correcting the level and cross level of a track
US4658730A (en) * 1983-12-28 1987-04-21 Canron Corp. Railroad correction apparatus
US20060032063A1 (en) * 2004-08-16 2006-02-16 Fabrication Technology Associates, Inc., Also Known As Fab Tech Method and system for controlling railroad surfacing

Also Published As

Publication number Publication date
AT273202B (de) 1969-08-11
DE1459606B1 (de) 1970-10-22

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