WHEEL PAIR AXLE BOX BEARINGS TEST BENCH Russian patent published in 2024 - IPC G01M13/04 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to test equipment intended for testing bearing assemblies of rail vehicles. Wheel pair axle box bearings test bench contains an axle, on the ends of which the tested bearings are installed, placed in the axle boxes resting on the bench foundation, on which an electromagnet is installed directly under the axle, axle is made removable, on the axle a laminated pack is pressed, assembled from rings of sheet electrical isotropic steel, coated with a dielectric, surfaces of poles of electromagnet core, facing axis, are made concave, mating cylindrical surface of laminated stack, wherein gap between cylindrical surface of laminated stack and surfaces of electromagnet core poles ensures constant magnetic induction over the entire area of said gap. Laminated stack made up of rings of sheet electrical isotropic steel can be pressed onto intermediate sleeve with possibility of its installation on bench axis.

EFFECT: providing constant magnetic induction over the entire area of the gap between the surfaces of the electromagnet core facing the axis and the axis of the bench, as well as increase in the permissible rotation frequency of the axis of the bench during testing of bearings due to reduction of eddy currents occurring in the axis.

2 cl, 2 dwg