Arrangement for locking slot wedges retaining electric windings

Details Arrangement for locking slot wedges retaining electric windings Arrangement for locking slot wedges retaining electric windings

1977-05-12

1979-04-10

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 58, H02K 348

Patent

active

041491017

ABSTRACT:
An arrangement for locking slot wedges retaining the winding of an electric machine against displacement thereof within the longitudinal slots of the magnetic core. The locking arrangement is disposed in the end portions of the slot and comprises locking wedges in contact with the extreme slot wedges and the locking wedges have teeth on the surfaces parallel to the bottom of the longitudinal slot. Stop collars are disposed at the intersection of the longitudinal slots and extreme radial ventilating ducts and embrace the locking wedges within a tooth portion thereof. Each tooth is defined by an inclined surface facing the central portion of the longitudinal slot from the ends thereof and a surface perpendicular to the axis of the core. The stop collars are shaped congruent to the locking wedge within a tooth portion thereof and are spaced from the lateral sides thereof. One end face of the stop collar is in contact with the surface of the tooth formed by a plane perpendicular to the core axis, while the other end face of the stop collar bears against the surface of the radial ventilating duct. Such a construction permits movement of the locking wedge only toward the central portion of the core, thus locking the slot wedges securely in place and preventing them from coming out of the longitudinal core slot.

REFERENCES:
patent: 984182 (1911-02-01), Barr
patent: 2316635 (1943-04-01), Staak
patent: 2723358 (1955-11-01), Holmgren
patent: 3009073 (1961-11-01), Drabik
patent: 3139550 (1964-06-01), Geer
patent: 3740601 (1973-06-01), Amasino
patent: 4015156 (1977-03-01), Johrde

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