Grinding machine for reprofiling railheads

Details Grinding machine for reprofiling railheads Grinding machine for reprofiling railheads

E - Fixed Constructions

01

B

51/38

E01B 31/17 (2006.01)

Patent

CA 1313050

ABSTRACT The machine which comprises several grinding heads per stretch of rail and which may be moved in respect of height by means of lifting devices is equipped with an installation for automatically lifting grinding wheels (M1 to M8) in the critical zones of switches, namely frog and blade zones. This installation comprises, on either side of each stretch of rail (R1, R2), a pair of sensors (C1, C2, C3, C4) at the front and a pair of sensors (C'1, C'2, C'3, C'4) at the rear, detecting the starts of critical zones, therefore the widening of the running tread in the zone of a switch and/or their auxiliary parts adjacent to the rails; a computation unit connected, on the one hand, to the sensors and, on the other hand, to each lifting device and equipped with a memory containing all the data defining the lifting distances of each grinding head in the critical zones; a unit for measuring the path traveled connected to the computation unit; the computation unit is provided in order to command the lifting and the lowering of each grinding head independ- ently, over memorized distances, as a function of signals received by the sensors.

582178

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