GB190819720A - Improvements in or relating to Arrangements for Securing the End-connections of Rotors of Dynamo-electric Machines - Google Patents

Abstract

19,720. SiemensBros. Dynamo Works, [Siemens - Schuckertwerke Ges.]. Sept. 19. Armatures; field magnets.-The end-connexions of slotted rotors are secured by extending the keys or wedges for holding the winding in the slots over the end connexions and fixing the projecting parts of the keys to the end rings. As applied to a distributed field-magnet winding, Figs. 1, 2, and 3, the slot-keys k are passed over the end-connexions of the coils l and are secured at their extremities to a flanged collar r carried by the end ring w, for example, by forming dovetail recesses in the collar r. Ocher keys k<1> similar to the keys k are secured to the end ring w, and, between the two sets of keys, are inserted dovetailed filling-pieces z which serve to fill up the spaces between the conductors and are made of varying length, as shown. Between the-circumferential or transverse parts of the end connexions, other filling-pieces z' may be inserted, Fig. 3, and may be provided with projections z<2> at their inner and outer ends to engage underneath and above the coils l. The keys k<1> may extend into the rotor slots, and, together with the keys k, may be made up of several parts or lengths. Instead of using keys k<1>, the pieces z may be secured directly to the end ring w.