DEVICE FOR AUTOMATIC MONITORING OF STRAIGHTNESS OF WELDED JOINTS AT RAILS AND METHOD OF ITS APPLICATION Russian patent published in 2014 - IPC B61K9/08 E01B35/10 G01B7/34 

FIELD: measurement equipment.

SUBSTANCE: device is used to monitor the deviation from straightness at the surface of the side active face of a rail head in horizontal plane and at the rail head running surface in vertical plane by contactless method. The device for automatic monitoring of rails' welded joint straightness comprises a casing, a mechanical portion, end face panels, contactless location sensors, sensors for contactless measurement of distance to the rail surface and an electronic unit. The mechanical portion consists of locating prisms closed by the end face panels on the outer side, the panels are fitted by cutouts corresponding to the surfaces mating the surfaces to be monitored with built-in magnets being installed between them. Each prism is equipped by backing-up tips contacting with the monitored surfaces. The contactless location sensors interfaced with the electronic unit are set near the tips. In the central casing part between the auxiliary prisms there installed are the sensors for contactless measurement of distance to the rail surface which are interfaced with the electronic unit providing for the display of the nonstraightness at analogue indicators and at a graphic display unit and for the storage of nonstraightness results in a memory block. The invention is also related to the method of using the device.

EFFECT: possibility of getting visualised and reliable information, reduction of time required for monitoring of rails' welded joint straightness.

2 cl, 10 dwg