Plate for attaching buttons friction material for disc brakes of rail vehicles with wheels and bearings from said plate comprising

摘要

A support plate (1) for supporting a plurality of buttons friction material (T) for disc brakes of railway wheeled vehicles, comprising: - at least one first through hole (F1) to allow cupping of each button (T) with said support plate (1); defining each first through hole (F1) an area and defining the area group of each first through hole (F1) a center of gravity (BA) on said support plate (1), - a plurality of second through holes (F2) for insertion of a respective locking element (MB), so that said support plate (1) engages a base plate (2); said second through holes (F2) being arranged near the perimeter of said support plate (1), characterized in that it further comprises: - at least one group of first eyelets or slots (5) arranged around said at least first through hole (F1), each group of first eyelets (5) by first at least two eyelets (5), wherein said first grommets (5) alternate with first portions (7) of the support plate, of such that, in the braking phase of rail vehicle wheels, in the presence or absence of a temperature difference between said support plate (1) and said base plate (2), said first portions (7) are deformed in the elastic range due to the effect of normal forces applied on said button (T), in such a way that the distributions of the contact pressure on (T) buttons are substantially uniform with respect to each other.