TEST BENCH FOR FATIGUE STRENGTH OF ABOVE-SPRING BEAMS OF FREIGHT-CAR TRUCKS

摘要

FIELD: transport. ^ SUBSTANCE: test bench for fatigue strength of above-spring beams of freight-car trucks includes at least one support rigidly fixed on the base, and loading device. In addition, bench includes circular rollers for installation on them of above-spring beams, shaped gaskets, one or two pneumatic pulsators. Circular rollers are fixed on the support. Shaped gaskets are intended to be arranged between tested above-spring beam and circular rollers. Loading device is made in the form of car frame equipped with fixtures for installation at least of one measuring load and centre plates to arrange on centre pads of tested above-spring beams. Pneumatic pulsator is installed on the base so that it can act on centre bearer of the car frame and is connected to the main compressed air line. Test bench can contain two pairs of supports. Centre plates of the car frame of loading device can be replaceable or can have the possibility of changing their sizes. Car frame of loading device can have body to arrange the measuring load in it. ^ EFFECT: simplifying the bench design and improving the test processability and accuracy of obtained results. ^ 6 cl, 2 dwg