| 摘要 |
<p>The track is divided into a certain number of sections and for each of these sections the following operations are carried out for each line of rails: … … a. a preferred reference profile is selected from several reference profiles, … b. a certain number of types of wear characteristic of the rail to be reprofiled are determined from among the indexed types of wear, … c. the type of machine which must be used for the reprofiling is selected from among the various types of machine available, as is its working speed, … d. standard configurations of tools are defined with regard to both position and power, … e. according to the type of reprofiling machine to be used, the standard configurations of tools which can be achieved on that machine are selected, … f. the lengths and/or the amplitudes of the longitudinal undulations on the envisaged section of track are measured, … g. the transverse profile of the rail head on the envisaged section of track is measured, … h. the measured profile of the rail is compared with the preferred reference profile and the excess metal to be removed is determined, … i. the measured transverse profile of the rail is compared with the various types of wear possible and the category of reprofiling to be used which is representative of this considered section is determined by this comparison, … j. the particular standard configuration of tools to be used from among those selected for the machine to be used is determined according to the representative reprofiling category, … k. the total number of passes to be carried out is determined according to the particular configuration of tools to be used, from the reprofiling category to be used, from the excess metal to be removed and from the amplitude of the longitudinal undulations. … </p> |
