GB2437752A - Prism support for use on rail track - Google Patents

Prism support for use on rail track Download PDF

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Publication number
GB2437752A
GB2437752A GB0622029A GB0622029A GB2437752A GB 2437752 A GB2437752 A GB 2437752A GB 0622029 A GB0622029 A GB 0622029A GB 0622029 A GB0622029 A GB 0622029A GB 2437752 A GB2437752 A GB 2437752A
Authority
GB
United Kingdom
Prior art keywords
prism
running edge
over
verticality
rail
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.)
Withdrawn
Application number
GB0622029A
Other versions
GB0622029D0 (en
Inventor
Brian Sherwin Sweatmore
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB0622029D0 publication Critical patent/GB0622029D0/en
Publication of GB2437752A publication Critical patent/GB2437752A/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002—Active optical surveying means
    • G01C15/004—Reference lines, planes or sectors
    • G01C15/006—Detectors therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002—Active optical surveying means
    • G01C15/008—Active optical surveying means combined with inclination sensor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/08—Measuring installations for surveying permanent way
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B26/00—Tracks or track components not covered by any one of the preceding groups
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/02—Means for marking measuring points
    • G01C15/06—Surveyors' staffs; Movable markers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

A device for accurately placing a railway surveying prism to return remote measurements from any direction and set over the running edge at all times regardless of twist or cant in the tracks. The device ensures the verticality of the prism by spirit leveling 3 when pivoted about the running edge of the rail. This ensures planimetric accuracy of the point observed. The verticality of the prism mount is controlled by means of a screw 4A operating over the other side of the railhead. It has an underside profile that allows for pivotal movement around the running edge to ensure plumbing of the prism. It may carry a 360-degree cylindrical target, the optical centre of which is set at a fixed offset above the running edge. The device may also carry any other prism, robotic or directional and plumbed exactly over the running edge as before described. It has a supporting rod 4, which may be attached to either side or on top and held by an operator to enable the safest means of placement on the rails. The device may carry LED illumination to facilitate night observation.

Description

<p>Page 1</p>
<p>PLANIMETRIC RAIL SLIPPER FOR RAILWAY SURVEYING</p>
<p>DESCRIPTION</p>
<p>1. This invention relates to a prism mount, which maintains planimetric positioning on rail tracks regardless of cant and supported safely from the trackside.</p>
<p>2. Rail shoes are well known devices used by railway engineering surveyors to carry reflective targets to return measurements with Laser type instruments.</p>
<p>They consist of an armature, which straddles the railhead and supporting a uni-directional prism over the running edge.</p>
<p>3. In order to align the prism to the running edge, as well as directing the uniprism to point to the surveying instrument the target holding assistant stands on or near the rail holding the device by means of a vertical rod.</p>
<p>4. Technical difficulties frequently arise from the displacement from vertical of the target above the running edge. This is due to the prism having to follow the sloping surface of the railhead even when on a skew or cant.</p>
<p>5. In such conditions the tilting armature is set at 90 degrees from the stem of the prism. Similarly, the prism must be pointed to the instrument to avoid angle of incidence errors.</p>
<p>6. The present invention seeks to eliminate the technical and safety disadvantages of this method in three ways:-o By enabling the prism to be vertically set over the running edge at all times due to a spirit bubble set on an adjustable armature.</p>
<p>o By using a 360-degree prism itensures measurements return from any remote position without having to eye in" the line of sight.</p>
<p>o By attaching the supporting rod from the cess or 6ft side of the Rail Slipper so that the assistant is never in the path of a train.</p>
<p>Page 1 Page 2 7. The principle feature of the rail slipper armature is in the underside profile.</p>
<p>8. The profile allows a single point of contact between the running edge and the Armature.</p>
<p>9. This is regulated by a vertical screw, which fixes over the opposite side of the railhead. By screwing up or down according to a torpedo level set on the top edge it is possible to ensure verticality of the prism even on a side sloping railhead.</p>
<p>10. A specific embodiment of the invention will now be described by way of example drawings attached.</p>
<p>11. Figure 1 shows a side view of the device set on a section of rail track 1. The device comprises an armature or yolk 5, which carries the prism device 2 and a spirit level 3. The whole device is supportable from the side or top by means of a standard Surveying rod 4.</p>
<p>12. The armature is designed to make contact at the running edge of the rail in order to make it a pivotal point for the underside profile of the armature. The underside profile of the armature is shaped to allow an arc swing of 8 degrees minimum about the pivotal point of the running edge.</p>
<p>13. The prism stem 3 is set in vertical alignment with the pivotal point of the armature and running edge.</p>
<p>14. A horizontal spirit level is mounted on the top of the armature to ensure that when level, the prism is at 90 degrees to the horizontal and therefore plumb over the running edge.</p>
<p>15. A threaded bolt is set on the other side of the armature (4A)and passes through to engage on the top of the opposite side of the railhead. Screwing the thread up or down according to the spirit level ensures a steady vertical position of the prism over the running edge.</p>
<p>16. By supporting the device with the surveying rod 4 at the side, the surveying assistant is able to stand up to 2 metres away from the track.</p>
<p>17. The prism mount 2 is also designed to return measurements from any angle about its circumference using laser instruments of the Total Station kind in surveying.</p>
<p>18. The optical centre of the prism mount is set at a fixed vertical offset above the running edge at the pivotal point.</p>
<p>Page 2 Page 3 19. Figure 2 shows a plan view of the rail 6 shown dotted and the prism stem 7 over the pivotal point of the running edge. The armature 8 sits astride the railhead and the level adjusting screw 9 goes through the armature to engage on the rail underneath.</p>
<p>20. Figure 3 shows a cross fall or canted rail 12 and the device 10 pivoting over the running edge at 12A. The spirit level 3 ensures verticality of the prism relative to the top surface of the armature.</p>
<p>21. Figure 4 illustrates the normal case of rail shoel4 inclined to the railhead 16 on a slope. The error occurs due to tilt angle from the vertical at 13 about the running edge 15.</p>
<p>Page 3</p>

Claims (1)

  1. <p>Page 4</p>
    <p>CLAIMS</p>
    <p>1. A device for supporting a railway surveying prism which is measurable from any direction and set over the running edge at all times regardless of twist or cant in the tracks.</p>
    <p>2. A device according to claim 1, which maintains the verticality of the prism by a spirit level, set on the armature.</p>
    <p>3. A device that pivots about the running edge of the rail to maintain a point of reference for the prism or target.</p>
    <p>4. A device according to claim I whereby the verticality of the prism mount is controlled by means of a screw operating over the other side of the rail head.</p>
    <p>5. A device according to claim 1 whereby the prism device is supported from the side of the track by means of a rod attachment at the side rather than the top.</p>
    <p>6. A device according to claim 1 whereby the underside profile of the device allows for pivotal movement around the running edge at all times to ensure plumbing of the prism.</p>
    <p>7. A device according to claim 1 which carries a 360-degree cylindrical target, the optical centre of which is set at a fixed offset above the running edge.</p>
    <p>8. A device according to claim I that may carry any prism exactly over the running edge and adjusted by means of screw attachment.</p>
    <p>9. A device, according to claim 1 that is supported by a rod attached to either side or on top to enable the safest means of placement on the rails.</p>
    <p>10. A device according to claim 1 that is adaptable to any prism device or holding rod.</p>
    <p>11. .A device according to claim 1 whereby the device may cany LED illumination to facilitate night observation.</p>
    <p>Page 4</p>
GB0622029A 2006-02-06 2006-11-06 Prism support for use on rail track Withdrawn GB2437752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0602311.3A GB0602311D0 (en) 2006-02-06 2006-02-06 Geodetic point fixing device

Publications (2)

Publication Number Publication Date
GB0622029D0 GB0622029D0 (en) 2006-12-13
GB2437752A true GB2437752A (en) 2007-11-07

Family

ID=36101092

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0602311.3A Ceased GB0602311D0 (en) 2006-02-06 2006-02-06 Geodetic point fixing device
GB0622029A Withdrawn GB2437752A (en) 2006-02-06 2006-11-06 Prism support for use on rail track

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0602311.3A Ceased GB0602311D0 (en) 2006-02-06 2006-02-06 Geodetic point fixing device

Country Status (1)

Country Link
GB (2) GB0602311D0 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011058212A1 (en) * 2009-11-10 2011-05-19 Konecranes Plc Runway measurement system and method
CN109682362A (en) * 2018-12-14 2019-04-26 中铁七局集团第五工程有限公司 Point device and its application method for subway slurry shield interval measure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1492628A (en) * 1974-12-09 1977-11-23 Plasser Bahnbaumasch Franz Apparatus for surveying railway track
JPH09145373A (en) * 1995-11-20 1997-06-06 Seiwa Consultant Kk Surveying indicator
GB2394773A (en) * 2002-10-11 2004-05-05 Brian Sherwin Sweatmore Reflector for use with an optical monitoring system
JP2005062034A (en) * 2003-08-15 2005-03-10 Keisoku Net Service Kk Railroad track measuring gauge, railroad track measuring system, and railroad track measuring method
GB2419669A (en) * 2003-07-30 2006-05-03 Michael Angelo Calienda Distance measuring target

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1492628A (en) * 1974-12-09 1977-11-23 Plasser Bahnbaumasch Franz Apparatus for surveying railway track
JPH09145373A (en) * 1995-11-20 1997-06-06 Seiwa Consultant Kk Surveying indicator
GB2394773A (en) * 2002-10-11 2004-05-05 Brian Sherwin Sweatmore Reflector for use with an optical monitoring system
GB2419669A (en) * 2003-07-30 2006-05-03 Michael Angelo Calienda Distance measuring target
JP2005062034A (en) * 2003-08-15 2005-03-10 Keisoku Net Service Kk Railroad track measuring gauge, railroad track measuring system, and railroad track measuring method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011058212A1 (en) * 2009-11-10 2011-05-19 Konecranes Plc Runway measurement system and method
CN102597697A (en) * 2009-11-10 2012-07-18 科恩起重机有限公司 Runway measurement system and method
CN102597697B (en) * 2009-11-10 2014-09-24 科恩起重机有限公司 Runway measurement system and method
US9784579B2 (en) 2009-11-10 2017-10-10 Konecranes Global Corporation Runway measurement system and method
CN109682362A (en) * 2018-12-14 2019-04-26 中铁七局集团第五工程有限公司 Point device and its application method for subway slurry shield interval measure

Also Published As

Publication number Publication date
GB0622029D0 (en) 2006-12-13
GB0602311D0 (en) 2006-03-15

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)