Patent ID: 8915335

Claim:
A device for the electrical braking of a drive shaft ( 5 ) which is guided in a fixed frame ( 6 ), wherein at least one end of the shaft is fixed to a brake disk ( 3 ), the device comprising: a braking element ( 2 ) which is formed i) by electric jaws ( 7 ) and at least one sliding block ( 8 ) mounted in proximity of the brake disk ( 3 ) in such a way that the brake disk ( 3 ) passes at least partially through the electric jaws ( 7 ) and the sliding block ( 8 ), and ii) by a fastening means ( 4 ) that fasten the electric jaws ( 7 ) and the sliding block ( 8 ) to the fixed frame ( 6 ) while providing the electric jaws and the sliding block with degrees of freedom obtained by the combination of different connections of flat plane contact (FC), point contact (PC) and annular linear contact (AC), in order to compensate for the misalignments and defects in a shape of the brake disk ( 3 ) when the brake disk ( 3 ) is driven in rotation, wherein the braking element ( 2 ) includes a plate ( 10 ) on which the electric jaws ( 7 ) and the sliding block ( 8 ) are arranged, the plate ( 10 ) being guided and retained with respect to the fixed frame ( 6 ) by the different point contact (PC) and annular linear contact (AC) connections of the fastening means ( 4 ), and wherein the point contact (PC) connection of the fastening means ( 4 ) is formed by a first pin ( 13 ) fixed to the fixed frame ( 6 ) and extending perpendicularly thereto in a horizontal direction parallel to an axis of the brake disk ( 3 ), so as to interact with an oblong fork-like opening ( 15 ) formed in an upper part of the plate ( 10 ).