Rotating electrical machine
View Patent ↗A rotating electric machine includes a rotor, having a rotor laminate stack extending in the direction of a machine axis and having a rotor winding, the rotor winding forming a winding head at each of the ends of the rotor laminate stack, said winding head being fastened to a winding head rim, which is arranged concentrically within the winding head and adjoins the rotor laminate stack in the axial direction, in order to intercept centrifugal forces by means of bolts passing radially through the winding head, and a fastening designed to safely absorb axial expansions of the winding head. Simple and secure fastening is achieved by virtue of the bolts being fastened to the winding head rim in each case on a T-shaped hammer profile, which extends in the axial direction and is mounted in axially movable fashion in an associated axial T-shaped slot in the winding head rim.
1. A rotating electric machine comprising a rotor, which comprises a rotor laminate stack extending in a machine axis direction and having a rotor winding, the rotor winding forming a winding head at each end of the rotor laminate stack, said winding head being fastened to a winding head rim, which is arranged concentrically within the winding head and adjoins the rotor laminate stack in an axial direction, in order to intercept centrifugal forces by bolts radially passing through the winding head, and a fastening of the winding head to the winding head rim being designed to safely absorb axial expansions of the winding head, the bolts are fastened to the winding head rim on a T-shaped hammer profile, which extends in the axial direction and is mounted in an axially movable fashion in an associated axial T-shaped slot in the winding head rim,
wherein a plurality of bolts with the same radial alignment are arranged one behind the other in the axial direction, and all of the bolts with the same radial alignment are fastened on a common T-shaped hammer profile or screwed into a common T-shaped hammer profile.
2. The rotating electric machine as claimed in claim 1 , wherein the bolts are in the form of screw bolts and are screwed into the T-shaped hammer profile.
3. The rotating electric machine as claimed in claim 1 , wherein all of the bolts with the same radial alignment externally act on the winding head via a common holding element.
4. The rotating electric machine as claimed in claim 1 , wherein the rotating electric machine is a hydrogenerator.