Being loaded on the raceway job machine null carriage rail

摘要

PURPOSE: To improve structural inaccuracy of a reference system by providing a cant measuring device to measuring filler bogies on both front and rear ends of the reference system and, at the same time, providing a pressure signal generator for detecting the lining correction force of lining correction drives. ;CONSTITUTION: Measured value of a difference in an unevennesse of a track in a measuring filler bogie 25 area is supplied to a launching hydraulic drive 12 from a measured value generator 27. Then, a track launching/lining correction unit 11 lifts the track to a specific target level. Then, a measured value generator wire cable 35 of measured value generators 32, 33 and 34 causes a longitudinal runout error of a fixed point 36 in a moving area or the like of a track curve. A laterial inclination of measuring filler bogies 24 and 26 is detected by cant measuring instruments 37 and 38, and a lining correction mechanism is corrected. Lining correction of a lining correction hydraulic drive 13 is detected by a pressure signal generator 39 and is corrected, and lining value automatically compensates deflection of a machine frame related to the lining correction force. By the constitution, the machine frame can be used as the reference base.;COPYRIGHT: (C)1995,JPO