System for fixing stator winding bars of a dynamo-electric rotating machine

A fixing system for fixing stator winding bars of a dynamo-electric rotating machine having a rotor and a stator, and said stator having a magnetic circuit with an inner surface that is generally cylindrical about the axis of rotation of the rotor, said system serving to fix said bars in the gap between the rotor and the stator magnetic circuit, said bars extending in a "longitudinal" direction parallel to the axis of rotation of the rotor, and being fixed by being pressed against said inner surface of the stator magnetic circuit;

• said fixing system comprising:
• non-metal fixing teeth which are generally prismatic with longitudinal generator lines, said teeth each having a foot fixed to the stator magnetic circuit and a body which protrudes radially inwards from the inner surface of said magnetic circuit, said teeth being spaced out angularly all around said inner surface;
• tangential wedges wedging the winding bars between the bodies of the angularly adjacent teeth;
• and
• radial wedges to prevent radial movement of said winding bars relative to the bodies of said teeth by pressing said bars against the inner surface of the stator magnetic circuit;
• the improvement wherein the angularly adjacent fixing teeth are alternately long and short with only the long teeth having heads that protrude radially inwards beyond said winding bars;
• said tangential wedges of the bars being radially driven outwards and each being inserted between winding bars and the side of one tooth to clamp each of said bars between a tangential wedge and the side of the other tooth;
• said radial wedges being parallel to said bars having plates fixed to the heads of only the long teeth, which plates extend tangentially between said long tooth heads and pressing radially outwards against the surfaces of said winding bars disposed between said long teeth.