BENCH FOR MEASUREMENT OF MASS, COORDINATES OF CENTRE OF MASS AND MOMENT OF INERTIA OF ITEM

摘要

FIELD: measurement equipment.;SUBSTANCE: invention relates to the field of measurement equipment, in particular, to measurement of mass, coordinates of the centre of masses and moments of inertia of items, and may be used in different industries. A bench comprises a stand, dynamometers, a dynamometric platform, sensors of angle and devices for setting oscillations, a three-component dynamometric element, which measures moments along three orthogonal axes, under serial oscillations of the item around it. The devices to set oscillations comprise movable frames connected to each other and to the bend, hinged joints and a system of springs, at the same time axes of hinged joints are connected to axes of angle sensors. Besides, the bench is equipped with fixators, which provide for oscillations of the item only around that axis, relative to which currently they measure the moment of inertia. The three-component dynamometric element comprises four plates aligned along coordinate axes of the bench, the upper base, on which the item is installed by means of a crosspiece, and the lower base fixed on the dynamometric platform. The latter is fixed so that the point of origin of the three-component dynamometric element is along the vertical axis X higher than the point of origin of the dynamometric platform, which rests against the dynamometers fixed in tops of the rectangular internal frame, sides of which are parallel to horizontal axes Y and Z, the bench and the three-component dynamometric element.;EFFECT: higher accuracy of measurements of moments of inertia.;10 dwg