METHOD TO DETERMINE MECHANICAL STRESSES IN RAIL AND DEVICE FOR ITS REALISATION Russian patent published in 2013 - IPC E01B19/00 E01B29/44 E01B31/06 E01B35/06 

FIELD: construction.

SUBSTANCE: method to determine mechanical stresses in a rail consists in the fact that a conical hole is drilled in rail journals, and its diameters are measured along perpendicular axes, afterwards the measured diameters are subtracted. Rail temperature is also measured, afterwards all measured data is sent to a diagnostics station. The device for determination of mechanical stresses consists of an accessory of a conical shape for measurement of diameters, where a disc is inserted, the plane of which is parallel to the plane of the rail journal. At each side of the disc there is one strain gage sensor arranged on the perpendicular axes of the disc. Inside the accessory there is a temperature sensor. Outlets of sensors, via a sealing unit, are serially connected with amplifiers, analogue-digital converters, a microprocessor and a wireless modem.

EFFECT: higher reliability of rails operation by monitoring of mechanical stresses.

2 cl, 6 dwg