EP 0207197 B1 19890329 - METHOD FOR THE RENEWING OR LAYING OF A RAILWAY TRACK
Title (en)
METHOD FOR THE RENEWING OR LAYING OF A RAILWAY TRACK
Publication
Application
Priority
EP 85201055 A 19850702
Abstract (en)
[origin: ES8801010A1] A levelling and shifting machine and a transmitter system (1) are used, the latter being installed on a carriage parked on the track and transmitting a spreading beam in the horizontal plane for levelling and a spreading beam in the vertical plane (Fr) for shifting, these beams defining an absolute measuring base. The receivers for levelling and shifting, which are installed on a measuring carriage of the machine, are designed for self-centering relative to the line of incidence of one of the said beams or the other during each measurement. In a curve of the track (3), the vertical beam (Fr) defines a cord of this curve, and the set position of the receiver defines the current value of the pitch of the curve (fm0, fm1 etc). A computer calculates the desired value of the pitch (f0, f1 etc.) and the variation (y0, Y1 etc.) between the two values, the latter variation determining the shifting correction. The measuring interval (G') covered by the machine without a change in the position of the transmitter (1) is selected greater than the length (G) of the cord, and the initial measuring point (A0) is selected on the secant passing through the cord beyond the point of intersection of the beam (Fr) and the track (3), so that the sum of the maximum pitches towards one side and the other is compatible with the travel of the receiver on its measuring carriage.
IPC 1-7
IPC 8 full level
E01B 33/00 (2006.01); E01B 35/06 (2006.01)
CPC (source: EP US)
E01B 35/06 (2013.01 - EP US); E01B 2203/16 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0207197 A1 19870107; EP 0207197 B1 19890329; AT E41796 T1 19890415; AU 580429 B2 19890112; AU 5945886 A 19870108; DD 248159 A5 19870729; DE 3569137 D1 19890503; ES 556741 A0 19871201; ES 8801010 A1 19871201; JP S6286201 A 19870420; US 4724653 A 19880216
DOCDB simple family (application)
EP 85201055 A 19850702; AT 85201055 T 19850702; AU 5945886 A 19860701; DD 29200886 A 19860701; DE 3569137 T 19850702; ES 556741 A 19860625; JP 15425686 A 19860702; US 87684486 A 19860620